To see the other types of publications on this topic, follow the link: Composite first name.
Journal articles on the topic 'Composite first name'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Composite first name.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Karpenkо, Olha. "The possible and the impossible in the diachronous oykonymy on the example of the Kyiv region." Ukrainska mova, no. 2 (2020): 89–99. http://dx.doi.org/10.15407/ukrmova2020.02.089.
Full textAbstract:
The example of the Kyiv region’s oykonyms illustrates the difficulties faced by the linguist in the study of the names of settlements. The problems that arise in the analysis of chronicle oykonyms are illustrated by the example of Pereyaslav. In formal terms, the oykonym Pereyaslavl’ is appropriate to be considered as a possessive of *-j(ь) on the first name Pereyaslav. The first component is motivated by the verb ‘to adopt’, the second is ‘a glory’, which is productive of composite names. Chronicle form ‘Russkiy Pereyaslavl’ gave rise to a version of the name transfer of Pereyaslavl’ from Bulgaria. The designation of Russkiy ‹ Rus performed a distinctive function with respect to other oykonyms, including the Bulgarian Preslav the Great. The coherence of the names of the new city with the Bulgarian Preslav does not prove the common origin of the oykonyms. For most archaic oykonyms, one can only speak of anthroponyms, without specifying a particular person. The settlement of Mutizhir, known from the chronicles, initially disappeared and was subsequently rebuilt and renamed: Motyzhir, Motyzhyn, Borisov and again Motyzhyn. The name Mutizhyr does not pass over the XII century, and the settlement of Motyzhyn is mentioned only at the end of the XV century. The chronicle anthroponym-composite Mutizhir could not be a motivator in the new conditions of the oykonyms formation. The name Motyzhyn has changed so much in comparison with the chronicle of primary sources that it became perceived as an independent possessive formation. Oykonimikon of XVII century allows one to define an etimon-anthroponym, often without specifying its carrier. For example, the oykonym Karapyszi is a specific Slavic plural form from the nickname Karapysz which is a derivative formation with dialectic implementation of the root morpheme, the initial base *tort-. Only certain names attract the written information about its owner and founder. It is correctly to include Dytyatky in the Kyiv region to such oykonyms. Keywords: oykonym, oykonym in chronicles, word-forming model, anthroponim, appellative, etymology.
2
Srujana Hemmanur, Pradeep S, and Sowmya K. "Comparative evaluation on the number of increments of composites used for restoring disto-occlusal cavities of maxillary and mandibular molars - A retrospective analysis." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 734–39. http://dx.doi.org/10.26452/ijrps.v11ispl4.4056.
Full textAbstract:
Over time and with the advancement of dental materials, a shift in the paradigm of how lost tooth structure can be restored has occurred. It is not very surprising to notice that many of the traditional amalgam restorations have been replaced with dental composites in the name of aesthetics. The factors that usually contribute to the failure of the composite restorations are secondary caries, pulpal irritation, post-operative sensitivity and marginal discoloration, all indicating microleakage being the cause. Microleakage, in turn, is caused by polymerization shrinkage, which is inherent to the material because of its composition. Amongst a few strategies to minimise polymerization drinking shrinkage is the use of the incremental technique. The aim of the present study was to evaluate and compare the number of increments of composites used for restoring disto-occlusal cavities of maxillary and mandibular molars in the South Indian population. It is a retrospective analysis. Data from 86,000 patient records were sieved and a total of 101 case sheets that presented with disto-occlusal composite restorations in maxillary and mandibular molars were included. The number of increments used to restore the cavity was assessed and tabulated in Microsoft Excel along with details like age, gender and tooth number. Frequency analyses and Chi-Square test was performed. Two increments of composite resin were reported to be used maximum in the restoration of the DO cavities in molars. The association of the number of increments to tooth number is found to be significant (p <0.05). Within the limitations of the study, the number of increments of composite used to restore a DO cavity was more in a mandibular first molar. Thus to conclude that all the teeth were restored in a conservative approach.
3
Fadai, Alireza, Matthias Rinnhofer, and Wolfgang Winter. "Development of Timber-Wood Lightweight Concrete-Glass Composite for Multi-Story Façades." Applied Mechanics and Materials 887 (January 2019): 30–39. http://dx.doi.org/10.4028/www.scientific.net/amm.887.30.
Full textAbstract:
Within several research projects and with the aim to optimize structural performance, energy efficiency and ecological characteristics of structural building components the Department of Structural Design and Timber Engineering (ITI) at the Vienna University of Technology (TU Wien) developed several wood-based composite systems, which combine timber products with other conventional building materials and components. As a representative example for these developments, this paper illustrates the results of the joint research project “Wood-based concrete: building construction with composite elements of wood-concrete compounds and timber (WooCon)”. The objective of the research project “WooCon” is to develop a multi-layer wall system composed of wood lightweight concrete (WLC), connected timber sections, textile reinforcement as well as glass layers on the exterior to gain and use advantages of each used material - lightweight, structural, thermal storage and insulation, ecological and economic benefits - to name the most important ones. In order to assess the structural physical properties of wood-based composite wall elements, in a first step measurements of the thermal properties with respect to thermal-insulating properties and thermal storage capacity are carried out. In following step, the results obtained are used further to simulate the thermodynamic and hygrothermal building behavior. The aim of the simulations is to investigate the effect of the wood-based composite wall elements to the annual heating demand as well as to the operative room temperature of a typical south-orientated living space.
4
Fabre, Thierry, Dominique Chauveaux, Maryse Moinard, et al. "Pilot Study of Safety and Performance of a Mixture of Calcium Phosphate Granules Combined with Cellulosic-Derived Gel after Tunnel Filling Created during Surgical Treatment of Femoral Head Aseptic Osteonecrosis." Key Engineering Materials 361-363 (November 2007): 1295–98. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.1295.
Full textAbstract:
The biomaterial studied here is a composite associating a mineral phase of an intimate nanoscale melting of hydroxyapatite and beta tri calcium phosphate and an aqueous phase containing a synthetic polymer derived from cellulose HPMC (hydroxyl propyl methyl cellulose), marketed under name MBCP Gel (FDA approval, Biomatlante manufacturer). The present exploratory study aim was to study the safety of MBCP-gel, and to determine in the osseous healthy area the performance of MBCP gel. We expected to prove bone ingrowth into the osseous cavities created during drilling biopsy of the aseptic osteonecrosis of femoral head. The current results obtained in the first two patients with 1 year follow up demonstrate the resorption and bone ingrowth with trabecular bone architecture in the hole created into the femoral neck.
5
Alhathlool, Khalid. "Hybridity: A Privilege of a Few or the Necessity for All in Amin Maalouf's In the Name of Identity." Somatechnics 6, no. 1 (2016): 24–39. http://dx.doi.org/10.3366/soma.2016.0172.
Full textAbstract:
This paper critically engages with Amin Maalouf's understanding of identity in his book In the Name of Identity (1997). Maalouf's intervention in the contentious discussion of identity consists of four principle points. Firstly, identity is composite. Secondly, identity is constructed through dialogic process. Thirdly, the understanding of identity today is predominately ‘tribal.’ Finally there is a need for the prevalence of the universal in the ‘era of globalization’. Maalouf's analysis rightly transcends the limitation of essentialist and singular conceptions of identity—in particular- cultural identity—in today's ‘postcolonial’’ world; however, his proposed alternative, and the assumptions upon which it rests, are equally problematic, especially for ‘postcolonial’ societies and immigrants/migrants in ‘Western’ countries. Maalouf's perspective on hybridity is riddled with contradictions: above all, the contradiction between understanding hybridity as a foundational position and as a deconstructive force of fixed identities and naturalised categories. This confusion arises when, on the one hand, cultures are understood as bounded and territorialised and, on the other, individuals are thought to belong simultaneously to these different, bounded cultures in full composite terms. In the first place there is an argument for sustaining purity, while the subsequent stage of identity formation advocates hybridity. Maalouf rejects purity as well as hybridity by appearing to sustain the two simultaneously. He cannot maintain this contradiction except through individualising the conception of identity. This paper argues that while Maalouf is able to problematise notions of ‘essentialist’ identities—what he dubs as ‘murderous identities’—and presents a moderately plausible case for ‘hybridity’, he fails to depart from a hegemonic and reified notion of a ‘universal’ or ‘cosmopolitan’ definition of identity which in effect operates as a code for Eurocentric ideas of identity and being. Thus, Maalouf's ‘speaking for’ postcolonial and migrant people/cultures and ‘speaking back’ against neo-conservative world-view is never quite able to escape the latter's ideological moorings.
6
Belyaev, Andrey G., and Elena I. Shubnitsina. "On the Origin of Russian-Language Hydronyms of the Shchugor River Basin." Вопросы Ономастики 17, no. 1 (2020): 95–112. http://dx.doi.org/10.15826/vopr_onom.2020.17.1.005.
Full textAbstract:
The article discusses the history of the hydronyms Shchugor, Patok, Glubnik, Torgovaya, Volokovka, Pyatidyrka, and Semidyrka, i.e. the names of the Shchugor River and its several tributaries of the first and second orders. Presently, these names mostly have a “Russian” phonetic appearance, however, their historical variants suggest that some of them may be a result of semantic adaptation of pre-Russian names. The authors suggest that the hydronyms Pyatidyrka and Semidyrka originated from Nenets names with a composite determinant -dyrma, expressing recurrence and place of action. In other examples, there is a parallel coexistence of several similar versions of one hydronym belonging to different languages, cf.: Russian Torgovaya, Komi-Zyryan Törgövöy-yu, Nenets Menyaylava. This can be regarded as a testimony to the past and current contacts of the Russian population with indigenous peoples — speakers of Finno-Ugric and Samoyedic languages. In some cases, the older pre-Russian form of a hydronym might be missing, i.e. replaced by a Russian-language variant without any trace of the substrate name. For example, the Komi-Zyryan hydronym Pyzhenyuts (from Komi-Zyryan pyzh ‘boat,’ literally “River on which boats can sail”) was replaced in the Old Russian period by the name Padun and, later, by the name Patok, both of the latter hydronyms being originally Russian. The article also analyzes native Russian names for which the most probable motivation can be established based on geographic data. Incidentally, the traditional interpretation of the name of the river Glubnik as “deep river” or “river with deep places” is called into question, since such an interpretation does not correspond to physical and geographical features of the river, the authors interpret the name as “River flowing from the depths of the taiga.” All linguistic observations and etymological interpretations of hydronyms presented in the article are based on the analysis of a large array of cartographic sources of the 16th–20th centuries; finally examples are given of the distortion of the spelling of the hydronyms of the Shchugorsk area of the Urals on the maps of various times.
7
Beaux, Nathalie. "King, lion and falcon at Deir el-Bahari: from Rw.ty to Horus. A study of the ramp newel posts in the Temple of Hatshepsut." Polish Archaeology in the Mediterranean XXIV, no. 2 (2016): 61–74. http://dx.doi.org/10.5604/01.3001.0010.0174.
Full textAbstract:
The newel posts of the first ramp had lion representations, those of the second one were decorated with composite falcon statues. It is the purpose of this article to study the surviving architectural elements of the ramp newel posts in detail and to explore the function of these elements in Hatshepsut’s temple cosmology. Rw.ty, the four seated lions of the first ramp, are guarding the passage from land to the intermediate level of the temple, “begetting” Horus the king, allowing him to rise in life like the sun in its daily resurrection trip, and this forever and ever. In turn, the falcon god of the second ramp hovers in protection, as witness and helper in the passage to the third and highest level of the temple, where the king will achieve full resurrection through the Amun sanctuary and fly up to the sky as a falcon in its name of MAa.t-kA-Ra. The cartouche raised by the anx sign on the first ramp finds an echo in the Sn sign held by the falcon on the second ramp: they both tie and establish the king into his solar renewal destiny, helped by the Dual-lions and Horus of Behedet, lion and falcon from earth to heaven.
8
Mortimer, Kate, Kirk Fitzhugh, Ana Claudia dos Brasil, and Paulo Lana. "Who’s who in Magelona: phylogenetic hypotheses under Magelonidae Cunningham & Ramage, 1888 (Annelida: Polychaeta)." PeerJ 9 (September 21, 2021): e11993. http://dx.doi.org/10.7717/peerj.11993.
Full textAbstract:
Known as shovel head worms, members of Magelonidae comprise a group of polychaetes readily recognised by the uniquely shaped, dorso-ventrally flattened prostomium and paired ventro-laterally inserted papillated palps. The present study is the first published account of inferences of phylogenetic hypotheses within Magelonidae. Members of 72 species of Magelona and two species of Octomagelona were included, with outgroups including members of one species of Chaetopteridae and four of Spionidae. The phylogenetic inferences were performed to causally account for 176 characters distributed among 79 subjects, and produced 2,417,600 cladograms, each with 404 steps. A formal definition of Magelonidae is provided, represented by a composite phylogenetic hypothesis explaining seven synapomorphies: shovel-shaped prostomium, prostomial ridges, absence of nuchal organs, ventral insertion of palps and their papillation, presence of a burrowing organ, and unique body regionation. Octomagelona is synonymised with Magelona due to the latter being paraphyletic relative to the former. The consequence is that Magelonidae is monotypic, such that Magelona cannot be formally defined as associated with any phylogenetic hypotheses. As such, the latter name is an empirically empty placeholder, but because of the binomial name requirement mandated by the International Code of Zoological Nomenclature, the definition is identical to that of Magelonidae. Several key features for future descriptions are suggested: prostomial dimensions, presence/absence of prostomial horns, morphology of anterior lamellae, presence/absence of specialised chaetae, and lateral abdominal pouches. Additionally, great care must be taken to fully describe and illustrate all thoracic chaetigers in descriptions.
9
Yu, Jinxia, Guanghui He, Xixi Yan, Yongli Tang, and Rongxia Qin. "Outsourced ciphertext-policy attribute-based encryption with partial policy hidden." International Journal of Distributed Sensor Networks 16, no. 5 (2020): 155014772092636. http://dx.doi.org/10.1177/1550147720926368.
Full textAbstract:
Attribute-based encryption is an efficient and flexible fine-grained access control scheme. However, how to realize the attribute privacy concerns in the access policy and optimize the heavy computing overhead have been not adequately addressed. First, in view of the open-access policies formulated by data owners in the cloud environment and the linear growth of bilinear pairing operations with the number of attributes in the decryption process, a verifiable outsourced attribute-based encryption with partial policy hidden scheme is proposed, in which the attribute name of access policy can be sent while attribute value involving sensitive information can be hidden, so nobody can infer information from the access policy. Second, the bilinear pairing operation and modular power operation are outsourced to the cloud server, then users only need to perform constant exponential operation to decrypt. In addition, the proposed scheme is based on the composite order bilinear group and satisfies full secure under the standard model. Finally, compared with other schemes in term of function and performance, it shows that this scheme is more efficient and suitable for resource-constrained mobile devices in outsourcing environment.
10
TETA, PABLO, ULYSES F. J. PARDIÑAS, and GUILLERMO D’ELÍA. "On the composite nature of the holotype of Loxodontomys pikumche Spotorno et al., 1998 (Rodentia, Cricetidae, Sigmodontinae)." Zootaxa 3135, no. 1 (2011): 55. http://dx.doi.org/10.11646/zootaxa.3135.1.3.
Full textAbstract:
Central Chilean populations of the mouse Loxodontomys Osgood were traditionally (e.g., Pine et al., 1979) included as part of the single species recognized in the genus, L. micropus (Waterhouse). Later, Spotorno et al. (1998) considered that they belong to an up to then undescribed species for which they coined the name L. pikumche. This taxon, with type locality in “... Cajón del Río Maipo, sector Cruz de Piedra (34º 10’ S 69º 58’ W, 2.450 msnm), a 55 km S de la Central Hidroeléctrica de Las Melosas... en la Cordillera de la Región Metropolitana” is characterized by a 2n = 32 (NF = 34) and some subtle morphological differences with L. micropus (that, in turn, has a 2n = 34, NF = 36; Spotorno et al., 1998; Teta et al., 2009). More recently, Novillo et al. (2009) reported the first record of L. pikumche in the Argentinean province of Mendoza and added some putative morphological differences with L. micropus to those previously listed by Spotorno et al. (1998). As discussed by Cañon et al. (2010), the morphological characters documented as differences by Novillo et al. (2009) have some degree of variation within populations of L. micropus s.s. (e.g., zygomatic plate morphology, lateral profile of nasals, development of posterior palate process; see Hershkovitz, 1962; Steppan, 1995) or were based on misinterpretation of some features (e.g., both specimens studied by Novillo et al. [2009] has posteriorly divergent toothrows, and not only that of micropus). Indeed, the distinction of L. pikumche was recently put in interdict by Cañon et al. (2010) on the base of molecular and morphological evidence. These authors remarked that several putative diagnostic characters (e.g., molar root numbers, incisor orientation, shape of upper incisor dentine fissure) vary within and among populations of L. micropus s.s. Further, Cañon et al. (2010) suggested that L. pikumche may be a junior synomyn of L. m. alsus (Thomas, 1919).
11
Rife, Joseph L. "The burial of Herodes Atticus: élite identity, urban society, and public memory in Roman Greece." Journal of Hellenic Studies 128 (November 2008): 92–127. http://dx.doi.org/10.1017/s0075426900000070.
Full textAbstract:
AbstractThis paper discusses the burial of Herodes Atticus as a well-attested case of élite identification through mortuary practices. It gives a close reading of Philostratus' account of Herodes' end inc. 179 (VS2.1.15) alongside the evidence of architecture, inscriptions, sculpture, and topography at Marathon, Cephisia and Athens. The intended burial of Herodes and the actual burials of his family on the Attic estates expressed wealth and territorial control, while his preference for Marathon fused personal history with civic history. The Athenian intervention in Herodes' private funeral, which led to his magnificent interment at the Panathenaic Stadium, served as a public reception for a leading citizen and benefactor. Herodes' tomb should be identified with a long foundation on the stadium's east hill that might have formed an eccentric altar-tomb, while an elegantklinêsarcophagus found nearby might have been his coffin. His epitaph was a traditional distich that stressed through language and poetic allusion his deep ties to Marathon and Rhamnous, his euergetism and his celebrity. Also found here was an altar dedicated to Herodes ‘the Marathonian hero’ with archaizing features (IGII26791). The first and last lines of the text were erased in a deliberate effort to remove his name and probably the name of a relative. A cemetery of ordinary graves developed around Herods' burial site, but by the 250s these had been disturbed, along with the altar and the sarcophagus. This new synthesis of textual and material sources for the burial of Herodes contributes to a richer understanding of status and antiquarianism in Greek urban society under the Empire. It also examines how the public memory of élites was composite and mutable, shifting through separate phases of activity — funeral, hero-cult, defacement, biography — to generate different images of the dead.
12
Mahdianpari, Masoud, Bahram Salehi, Fariba Mohammadimanesh, Saeid Homayouni, and Eric Gill. "The First Wetland Inventory Map of Newfoundland at a Spatial Resolution of 10 m Using Sentinel-1 and Sentinel-2 Data on the Google Earth Engine Cloud Computing Platform." Remote Sensing 11, no. 1 (2018): 43. http://dx.doi.org/10.3390/rs11010043.
Full textAbstract:
Wetlands are one of the most important ecosystems that provide a desirable habitat for a great variety of flora and fauna. Wetland mapping and modeling using Earth Observation (EO) data are essential for natural resource management at both regional and national levels. However, accurate wetland mapping is challenging, especially on a large scale, given their heterogeneous and fragmented landscape, as well as the spectral similarity of differing wetland classes. Currently, precise, consistent, and comprehensive wetland inventories on a national- or provincial-scale are lacking globally, with most studies focused on the generation of local-scale maps from limited remote sensing data. Leveraging the Google Earth Engine (GEE) computational power and the availability of high spatial resolution remote sensing data collected by Copernicus Sentinels, this study introduces the first detailed, provincial-scale wetland inventory map of one of the richest Canadian provinces in terms of wetland extent. In particular, multi-year summer Synthetic Aperture Radar (SAR) Sentinel-1 and optical Sentinel-2 data composites were used to identify the spatial distribution of five wetland and three non-wetland classes on the Island of Newfoundland, covering an approximate area of 106,000 km2. The classification results were evaluated using both pixel-based and object-based random forest (RF) classifications implemented on the GEE platform. The results revealed the superiority of the object-based approach relative to the pixel-based classification for wetland mapping. Although the classification using multi-year optical data was more accurate compared to that of SAR, the inclusion of both types of data significantly improved the classification accuracies of wetland classes. In particular, an overall accuracy of 88.37% and a Kappa coefficient of 0.85 were achieved with the multi-year summer SAR/optical composite using an object-based RF classification, wherein all wetland and non-wetland classes were correctly identified with accuracies beyond 70% and 90%, respectively. The results suggest a paradigm-shift from standard static products and approaches toward generating more dynamic, on-demand, large-scale wetland coverage maps through advanced cloud computing resources that simplify access to and processing of the “Geo Big Data.” In addition, the resulting ever-demanding inventory map of Newfoundland is of great interest to and can be used by many stakeholders, including federal and provincial governments, municipalities, NGOs, and environmental consultants to name a few.
13
Iheanacho, Philip C. "Formation-Resistivity Theory: How Archie Equations, Shaly-Reservoir Models, Conductive Rock-Matrix Model, and Dual-Triple-Porosity Models Are Related." SPE Reservoir Evaluation & Engineering 17, no. 02 (2014): 141–51. http://dx.doi.org/10.2118/167507-pa.
Full textAbstract:
Summary The estimation of hydrocarbon pore volume (HCPV) from resistivity logs can be quite troublesome in some complex heterogeneous reservoirs. Most water-saturation/formation-resistivity models that work well for some reservoirs give unreliable results for others. No single model works for all types of reservoir scenarios. This paper presents the theory of formation resistivity in porous media. The paper develops the theory from the parallel-resistivity model and then extends it for the series-resistivity model. When applied for clean sand, the theory derives Archie equations from the first principle. The derivations show that both porosity exponent and saturation exponent are of the same origin and should have the same name. A better name for both parameters should be the tortuosity exponent of a component with respect to its fraction in a control volume. It is also advantageous to treat as a single parameter rather than two separate parameters. In addition, this theory derives new shaly-sand models for estimating HCPV. These new shaly-sand models can be used for different types of shale distribution by adjusting the value of a single parameter in the models. The formation-resistivity theory is also used to derive formation-resistivity models for conductive rock-matrix reservoirs and dual-triple-porosity reservoirs. A new equation for calculating the composite-porosity exponent is also developed. Field data are used to validate this work. The theory, when applied for each scenario, derives formation-resistivity models for estimating the reliable HCPV of different reservoir scenarios and types. Moreover, the strength of this theory is its ability to generate models that closely resemble models that have proved to work well for the reservoir cases for which they were developed. Although this work does not test the theory for the cases of tight-sand, shale-gas, and other unconventional reservoirs because of the unavailability of such data, the author is of the opinion that the theory can easily be extended for such reservoirs if the necessary data are available.
14
Moisiienko, Anatolii. "Title as a constructive element in the sonnet text." Language: classic - modern - postmodern, no. 7 (November 24, 2021): 22–34. http://dx.doi.org/10.18523/lcmp2522-9281.2021.7.22-34.
Full textAbstract:
Background. The title of the literary text arises in front of a researcher in two capacities. First – as one of the elements of metatext level, immediately aimed at the close interrelation with the main text, and second – as a separate text structure with its own grammar and semantic structure. The analysis of the title in the interrelation with the main text, taking into consideration genre specifics of the latest, is of immediate interest. Purpose. The target of this study is to describe the title text in the Ukrainian sonnet poem, in particular in the correlation with the integral text structure, which is caused by the absence of any specific research of this problem.Methods. Research approach of the title text as a separate unit and as a constructive element of the wider text structure relies on the basics of classification description, contextual and hermeneutic analysis in the system of literary text.Results. The title of the sonnet poem, generally not falling out of the paradigm of the paratextual formations, on the functional level is characterized by certain particularities compared to other lyric and epic genres – where it can serve, for instance, as a genre self-name of the poem. On the structure level the sonnet marker can start or finish the composite word, serve as an attribute noun in the attributive word combination, play a role of the key word with the dependent substantive etc. The title (together with subtitle or without it) is able to attribute thematic and semantic lines in the poem, some structure and genre changes.Conclusion. The title of the sonnet text, being a paratext element, accomplishes an important prospect and retrospect function for comprehension of the integral structure of the literary text; can serve as genre self-name of the poem, involving at the same time different thematic layers of narration; can also point at some structure and genre modifications of the classic sonnet, and some shifts to other traditional genres.
15
Kaplan, Kenneth, and Henry E. Pape. "DESIGN OF BREAKWATERS." Coastal Engineering Proceedings 1, no. 1 (2010): 24. http://dx.doi.org/10.9753/icce.v1.24.
Full textAbstract:
As the name implies, a breakwater is a barrier constructed to break up and disperse heavy seas, to shield the interior waters of a harbor from winds and waves, and to provide shelter and protection for ships, shipping facilities, and other harbor improvements. Breakwaters are structures used to improve a naturally protected (sheltered) harbor or to create a sheltered harbor at locations required for shipping, refuge, recreation, etc. Breakwaters may be roughly divided into two main groups, the vertical-wall type and the rubble-mound type. A possible third group, the composite type, consists of the wall-type placed upon a rubble-mound foundation. Since the experience of the San Francisco District, Corps of Engineers, has been limited to the construction of rubble-mound breakwaters and jetties in as much as practically all breakwaters on the Pacific Coast are of rubble-mound construction, the second half of this paper has been limited to the consideration of this type of structure. The first half of the paper discusses general subjects (choice of location and type of breakwater, etc.) relevant to both types. Until recently, the design and construction of breakwaters was largely an empirical "art" based mainly on the designer's observations of the performance of previously constructed breakwaters. Great latitude was given personal discretion and judgment, since those factors which might influence or standardize design were little understood.
16
Skelton, Faye C., Charlie D. Frowd, and Kathryn E. Speers. "The benefit of context for facial-composite construction." Journal of Forensic Practice 17, no. 4 (2015): 281–90. http://dx.doi.org/10.1108/jfp-08-2014-0022.
Full textAbstract:
Purpose – The purpose of this paper is to investigate whether the presence of a whole-face context during facial composite production facilitates construction of facial composite images. Design/methodology/approach – In Experiment 1, constructors viewed a celebrity face and then developed a facial composite using PRO-fit software in one of two conditions: either the full-face was visible while facial features were selected, or only the feature currently being selected. The composites were named by different participants. The authors then replicated the study using a more forensically valid procedure: in Experiment 2 non-football fans viewed an image of a premiership footballer and 24 hours later constructed a composite of the face with a trained software operator. The resulting composites were named by football fans. Findings – In both studies, the presence of the facial context promoted more identifiable facial composites. Research limitations/implications – Current composite software was deployed in a conventional and unconventional way to demonstrate the importance of facial context. Practical implications – Results confirm that composite software should have the whole-face context visible to witnesses throughout construction. Although some software systems do this, there remain others that present features in isolation and these findings show that these systems are unlikely to be optimal. Originality/value – This is the first study to demonstrate the importance of a full-face context for the construction of facial composite images. Results are valuable to police forces and developers of composite software.
17
Yu, G. T., J. D. Franckowiak, S. M. Neate, B. Zhang, and R. D. Horsley. "A native QTL for Fusarium head blight resistance in North American barley (Hordeum vulgareL.) independent of height, maturity, and spike type loci." Genome 53, no. 2 (2010): 111–18. http://dx.doi.org/10.1139/g09-091.
Full textAbstract:
Fusarium head blight (FHB), caused by Fusarium graminearum Schwabe (teleomorph Gibberella zeae (Schwein.) Petch), is one of the major diseases of barley (Hordeum vulgare L.) in eastern China, the Upper Midwest of the USA, and the eastern Prairie Provinces of Canada. To identify quantitative trait loci (QTL) controlling FHB resistance, a recombinant inbred line population (F6:7) was developed from the cross Zhenongda 7/PI 643302. The population was phenotyped for resistance to FHB in two experiments in China and four experiments in North Dakota. Accumulation of the mycotoxin deoxynivalenol was determined in one experiment in China and two in North Dakota. Simplified composite interval mapping was performed on the whole genome level using the software MQTL. The QTL FHB-2 from PI 643302 for FHB resistance was found on the distal portion of chromosome 2HL in all six FHB screening environments. This QTL accounted for 14% of phenotypic variation over six environments and was not associated with heading date or plant height. The FHB resistance QTL FHB-2 detected near the end of chromosome 2HL is in a different location from those found previously and is therefore probably unique. Because the QTL was not contributed by the Chinese cultivar Zhenongda 7, it is likely a native QTL present in North American barley. The QTL FHB-2 represents the first reported QTL for native FHB resistance in North American germ plasm and has been given the provisional name Qrgz-2H-14. This QTL should be considered for pyramiding with other FHB QTL previously mapped.
18
Saboktakin, A., and T. Vu-Khanh. "Performance assessment of textile composite using NDE and mechanical testing techniques." International Journal of Structural Integrity 5, no. 1 (2014): 17–29. http://dx.doi.org/10.1108/ijsi-04-2013-0007.
Full textAbstract:
Purpose – Quality assessment of textile composites needs to have sufficient knowledge about the various types of non-destructive testing techniques to detect defects as well as the effect of these defects on mechanical performance. The paper aims to discuss these issues. Design/methodology/approach – The major approach of this paper was to evaluate the potential of two inspection techniques named ultrasounds, vibrations for detecting textile reinforcement defects in composites and evaluate the composite performance in the presence of a damage. Findings – Potential solutions have been identified to solve the issue of signal attenuation observed during C-scan ultrasonic testing, and the criticality of initial defects on static test was determined. Originality/value – The research work presented here has been a first attempt to apply the combination of different techniques in particular polar scan for the textile composite inspection. This will become more crucial as requirements for high performance and complex shape textile composite parts.
19
Rusinova, Irina I. "‘LIGHTNING’ AND ‘THUNDER’ STONES IN TRADITIONAL CULTURE OF PERM KRAI: SEMANTICS AND APPLICATION IN MAGICAL PRACTICES." Вестник Пермского университета. Российская и зарубежная филология 12, no. 4 (2020): 24–32. http://dx.doi.org/10.17072/2073-6681-2020-4-24-32.
Full textAbstract:
The article deals with the vocabulary and texts devoted to the so-called ‘thunder’ and ‘lightning’ stones that Perm Krai residents use in magical practices. Study of the ‘stone’ semantics of the nominative combination thunderbolt, which is most often used to refer to such a stone, has led us to the conclusion that the meaning of the lexical unit developed as a result of metonymic transfer of the name from an atmospheric phenomenon (lightning) to an object that was struck by lightning (stone). The mythologization of thunderstorms, thunder and lightning provided understanding of the stone thunderbolt as something possessing supernatural properties. The context analysis of the records of dialect speech that were made in rural areas of Perm Krai allowed us to identify several groups of meanings for the composite categories considered in the article (thunder stone, lightning stone, thunderbolt, lightning bolt). This identification is based on the presence / absence of semantic cohesion of these units with meteorological phenomena: a stone that is sand fused from a lightning strike – fulgurite; a stone that was struck by lightning; a dark red or brown stone; a smooth rounded stone; a conical stone representing the fossilized remains of extinct cephalopods – belemnite; a piece of exotic wood; a piece of metal elongated in shape. According to the records of the Russian dialectic speech of Perm Krai, these stones can be used for different purposes. First of all, they are used in folk medicine (for the treatment of people and livestock), they can be used by shepherds for apotropaic purposes (to protect livestock from predatory animals). According to the data from other territories, a thunderbolt can be used for producing purposes.
20
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part V: Joints and Weldments." Journal of Ship Production and Design 32, no. 01 (2016): 1–20. http://dx.doi.org/10.5957/jspd.2016.32.1.1.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elastoplastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
21
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part III: Impact, Grounding, and Reliability of Ships under Extreme Loading." Journal of Ship Production and Design 31, no. 03 (2015): 137–69. http://dx.doi.org/10.5957/jspd.2015.31.3.137.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elasto-plastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
22
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part VI: Crack Arresters 1." Journal of Ship Production and Design 32, no. 02 (2016): 71–98. http://dx.doi.org/10.5957/jspd.2016.32.2.71.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elasto-plastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
23
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part I: Basic Ingredients of Fracture Mechanics." Journal of Ship Production and Design 31, no. 01 (2015): 1–42. http://dx.doi.org/10.5957/jspd.2015.31.1.1.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elasto-plastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
24
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part II: Fatigue Life and Reliability Assessment of Naval Ship Structures." Journal of Ship Production and Design 31, no. 02 (2015): 100–128. http://dx.doi.org/10.5957/jspd.2015.31.2.100.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elasto-plastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
25
Ibrahim, R. A. "Overview of Structural Life Assessment and Reliability, Part IV: Corrosion and Hydrogen Embrittlement of Naval Ship Structures." Journal of Ship Production and Design 31, no. 04 (2015): 241–63. http://dx.doi.org/10.5957/jspd.2015.31.4.241.
Full textAbstract:
Structural life assessment periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, probability of failure, and reliability. With reference to naval ship structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. The purpose of this series of review articles is to provide different issues pertaining to structural life assessment of ships and ocean structures. Part I deals with the basic ingredients of the theory of fracture mechanics, which is classified into linear elastic fracture mechanics and elasto-plastic fracture mechanics. The amount of energy available for fracture is usually governed by the stress field around the crack, which is measured by the stress intensity factor. The value of the stress intensity factor, which depends on the loading mode, is evaluated by different methods developed by many researchers. The applications of the theory of fracture mechanics to metallic and composite structures are presented with an emphasis to those used in marine structures. When the inertia of relatively large pieces of a structure is large enough that the correct balancing of the energy of fracture requires the inclusion of kinetic energy, then the dynamic nature of fracture dominates the analysis. For a crack that is already propagating, the inertial effects are important when the crack tip speed is small compared with the stress wave velocities. This fact has been realized in the theory of fracture mechanics under the name of dynamic fracture and peridynamic. In essence, peridynamic replaces the partial differential equations of classic continuum theories with integro-differential equations as a tool to avoid singularities arising from the fact that partial derivatives do not exist on crack surfaces and other singularities. A brief overview of fracture dynamics and peridynamics together with damage mechanisms in composite structures is presented. The limitations of fracture mechanics criteria are also discussed. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure, which are addressed in Part II. Life assessment of ship structures depends on the failure modes and the probabilistic description of failure. In view of structural parameter uncertainties, probabilistic analysis requires the use of reliability methods for assessing fatigue life by considering the crack propagation process and the first passage problem, which measures the probability of the exit time from a safe operating regime. The main results reported in the literature pertaining to ship structural damage assessments resulting from to slamming loads, liquid sloshing impact loads of liquefied natural gas in ship tankers, and ship grounding accidents, and collision with solid bodies are discussed in Part III. Under such extreme loadings, structural reliability will be the major issue in the design stage of ocean structures. The treatment of extreme loading on ship structures significantly differs from those approaches developed by dynamicists. Environmental effects on ship structures play a major factor in the life assessment of ocean systems. In particular, these effects include corrosion and hydrogen embrittlement. Part IV is devoted to a ship's life assessment resulting from corrosion and hydrogen embrittlement. Because structural components made from aluminum and its alloys are vital to the ship and aerospace industries, the influence of environment on aluminum structures and the means of corrosion control and monitoring in both aluminum and nonaluminum metals are presented. Hybrid ships consist of a stainless steel advanced double-hull center section, to which a composite material bow and/or stern is attached. Such structures require strong joints between the composite and the steel parts. Some of the difficulties with joining composites and metal are related to the large difference in mechanical properties such as stiffness, coefficient of thermal expansion, etc., between the adherents and the large anisotropy of composites. Such differences generally lead to large stress concentrations and weak joints. Fatigue crack growth, stress concentrations resulting from details, joints, and fasteners are addressed in Part V. Fatigue improvement in welded joints is considered one the major tasks of this part. Brittle fracture of hull structures causes serious structural damage and this motivated the ship structure community to develop some means to prevent brittle cracks from occurring. The basic principle behind the use of a crack arrester is to reduce the crack-driving force below the resisting force that must be overcome to extend a crack. The crack arrestor can be as simple as a thickened region of metal or may be constructed of a laminated or woven material that can withstand deformation without failure. Part VI provides different approaches of passive crack control in the form of crack arresters to stop crack propagation before it spreads over a structure component. Crack arresters used in ship structures and pipelines are described for both metal and composite materials. This six-part review article is by no means exhaustive and is based on over 1800 references. It does not address the structural health monitoring, which constitutes a major task in the structural diagnostic process.
26
Boatright-Horowitz, Su L. "A Classroom Demonstration of Nuttin's (1985) Ownership Effect: The Letters of My Own First Name." Teaching of Psychology 22, no. 2 (1995): 131–33. http://dx.doi.org/10.1207/s15328023top2202_12.
Full textAbstract:
Undergraduate social psychology students can benefit from a classroom experience that demonstrates their preferences for objects or events related to themselves, particularly when the factors giving rise to those preferences are inaccessible to conscious awareness. Procedures were designed to demonstrate Nuttin's (1985) name letter effect in a classroom setting. Students organized themselves into research pairs with one “experimenter” and one “subject” composing each pair. Experimenters tested subjects' preferences for alphabetic letters, comparing total ratings for first name letter with those for letters not in subjects' first names. Most subjects responded preferentially to the letters of their own first names.
27
CALVO, JOEL, ARTURO GRANDA, and HAMILTON BELTRÁN. "Contributions to the Andean Senecioneae (Compositae)—V. Novelties for Peru, new synonyms, and taxonomic notes." Phytotaxa 424, no. 5 (2019): 282–92. http://dx.doi.org/10.11646/phytotaxa.424.5.2.
Full textAbstract:
On-going studies of the tribe Senecioneae (Compositae) led us to record for the first time five species for Peru, i.e., Dendrophorbium scytophyllum, Pentacalia luteynorum, P. millei, P. riotintis, and Senecio puchei. In addition, the name P. lanceolifolia is synonymized with P. andrei, as well as P. hitchcockii and P. huamaliensis with P. theifolia, and P. tillettii with P. riotintis. Each species is discussed and compared against similar taxa. The name S. puchei is neotypified.
28
Valeri, Cristina, Angelo Aloisio, Stefano Mummolo, and Vincenzo Quinzi. "Performance of Rigid and Soft Transfer Templates Using Viscous and Fluid Resin-Based Composites in the Attachment Bonding Process of Clear Aligners." International Journal of Dentistry 2022 (February 12, 2022): 1–11. http://dx.doi.org/10.1155/2022/1637594.
Full textAbstract:
Objectives. The study aims at assessing the accuracy of the process of attachment bonding in aligner treatments. The analysis leads to the error estimation in the faithful reproduction of master model attachments using two types of transfer templates and two light-curing resin-based composites usually used in orthodontics. Methods. The authors have used two transfer templates made of two different materials. The first, named Leone-biocompatible thermoforming material hard/soft, has a lower Young’s modulus and is labelled as soft, while the other, named Leone-biocompatible thermoforming material, is marked as rigid. The resin-based composites possess different mechanical and rheological properties. Specifically, Transbond™ XT Light Cure Paste Adhesive, 3M has a higher viscosity than the TetricEvoflow, Ivoclar Vivadent, a flowable nanohybrid composite. The authors attempt to estimate the performance ranking between the four possible couples obtained by combining the two light-curing resin-based composites and transfer templates. Each combination was repeated in six models and compared with twelve master models, resulting in 36 total samples. A 3-D laser scanner is used to generate a digital model of each model. The comparison between digital models is the base for a comparative assessment in terms of relative and absolute error. The relative error is estimated using scalar performance indicators ranging from 0 to 1, where 1 indicates the optimum matching. The absolute error estimated from the mean square error between the coordinates of each digital model yields the reproduction accuracy in micrometer. Furthermore, the authors attempted to assess the error distribution by evaluating the point-by-point difference between the digital models. Results. This analysis aims at localizing the sources of error in the considered models. The use of Transbond™ XT Light Cure Paste Adhesive, 3M with a rigid transfer template is always associated with significant accuracy and minor dispersion. However, in a few instances, using the soft template or the flowable resin-based composite can lead to bad performances. Significance. The data processing bestowed the following performance ranking from the first with lower reproduction error to the last characterized by the worst performance: (1) attachments bonding with rigid template and Transbond™ XT Light Cure Paste Adhesive, 3M, (2) attachments bonding with soft template and Transbond™ XT Light Cure Paste Adhesive, 3M, (3) attachments bonding with rigid template and TetricEvoflow, Ivoclar Vivadent, and (4) attachments bonding with soft template and TetricEvoflow, Ivoclar Vivadent.
29
Provenzano, Robert, Lynda Szczech, Robert Leong, et al. "Efficacy and Cardiovascular Safety of Roxadustat for Treatment of Anemia in Patients with Non–Dialysis-Dependent CKD." Clinical Journal of the American Society of Nephrology 16, no. 8 (2021): 1190–200. http://dx.doi.org/10.2215/cjn.16191020.
Full textAbstract:
Background and objectivesWe evaluated the efficacy and cardiovascular safety of roxadustat versus placebo by analyzing data pooled from three phase 3 studies of roxadustat in patients with non–dialysis-dependent CKD and CKD-related anemia.Design, setting, participants, & measurementsIn the three phase 3, double-blind studies of roxadustat versus placebo evaluating the treatment of CKD-related anemia in patients not requiring dialysis, the primary efficacy end point was mean change from baseline in hemoglobin averaged over weeks 28–52, regardless of rescue therapy. The primary cardiovascular safety end point was a composite measure of major adverse cardiovascular events (MACE; all-cause mortality, myocardial infarction, stroke). MACE plus (MACE+; MACE plus unstable angina and heart failure requiring hospitalization) and all-cause mortality were key secondary safety end points. These safety end points were adjudicated.ResultsA total of 4277 patients with non–dialysis-dependent CKD were randomized (roxadustat, n=2391; placebo, n=1886). Baseline characteristics were comparable between groups; the mean (SD) hemoglobin was 9.1 (0.7) g/dl and mean eGFR was 20 (12) ml/min per 1.73 m2. Patients treated with roxadustat versus those treated with placebo showed a mean change from baseline in hemoglobin averaged over weeks 28–52, regardless of rescue therapy, of 1.9 versus 0.2 g/dl, a treatment difference of 1.7 (95% confidence interval [95% CI], 1.7 to 1.8). Roxadustat reduced the need for red blood cell transfusion in the first 52 weeks versus placebo (6.1 versus 20.4 per 100 patient-exposure years, respectively; hazard ratio [HR], 0.26; 95% CI, 0.21 to 0.32). There were no increased risks of MACE (HR, 1.10; 95% CI, 0.96 to 1.27), MACE+ (HR, 1.07; 95% CI, 0.94 to 1.21), all-cause mortality (HR, 1.08; 95% CI, 0.93 to 1.26), or individual MACE+ components in patients treated with roxadustat versus those treated with placebo.ConclusionsRoxadustat was more effective than placebo at increasing hemoglobin in patients with non–dialysis-dependent CKD and anemia, while decreasing transfusion rate and being noninferior to placebo with respect to risk of MACE.Clinical Trial registry name and registration number:A Study of FG-4592 for the Treatment of Anemia in Chronic Kidney Disease Patients Not Receiving Dialysis, NCT01750190; Roxadustat in the Treatment of Anemia in Chronic Kidney Disease Patients Not Requiring Dialysis (ALPS), NCT01887600; Safety and Efficacy Study of Roxadustat to Treat Anemia in Patients With Chronic Kidney Disease (CKD), Not on Dialysis, NCT02174627
30
Chen, Chongshuang, Jiayin Tang, Jianbo Xiao, and Lei Huang. "Uncertainty Distribution of Some Composite Uncertain Variables." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 25, no. 04 (2017): 545–55. http://dx.doi.org/10.1142/s0218488517500234.
Full textAbstract:
In this paper, we named the composition by a real-valued measurable function and an uncertain variable as a composite uncertain variable. We focused on the uncertainty distribution for two kinds of composite uncertain variables. The conclusions show: (1) it exists a lower bound when the composed function is continuous and strictly monotonically decreasing at first and then strictly monotonically increasing (e.g. convex downward functions); (2) it exists an upper bound when the composed function is continuous and strictly monotonically increasing at first and then strictly monotonically decreasing (e.g. convex upward functions).
31
Calvo, Joel, and Andrés Moreira-Muñoz. "Taxonomic revision of the Andean genus Xenophyllum (Compositae, Senecioneae)." PhytoKeys 158 (September 3, 2020): 1–106. http://dx.doi.org/10.3897/phytokeys.158.50848.
Full textAbstract:
The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving in the paramo and puna ecoregions. It comprises suffruticose plants forming dense mats, hummocks, or clumps of erect stems. They are characterized by displaying involucral bracts fused at the base, supplementary bracts absent, and mostly radiate capitula with white ray corollas, seldom yellow or pink (disciform in one species). Traditionally, Xenophyllum species were treated as members of the genus Werneria, a morphologically close genus that includes rosettiform or scapiform perennial herbs. As currently circumscribed, Xenophyllum mostly differs from Werneria in having elongate stems. Herein, the first modern and comprehensive revision of the genus recognizing twenty-two species and two subspecies is presented. Werneria decumbens is synonymized with X. weddellii, as well as X. fontii with X. humile and X. oscartovarii with X. dactylophyllum. Likewise, four varietal names and two sectional names are proposed as new synonyms. Seven names are lectotypified, the name X. sotarense is epitypified, W. decumbens neotypified, and the supraspecific name W. sect. Integrifoliae Rockh. is typified. The combination X. crassum subsp. orientalecomb. nov. is made. Descriptions and distribution maps are provided for all accepted species, in addition to an identification key. Ten species are illustrated, three of them for the first time.
32
CALVO, JOEL, and NÁDIA ROQUE. "Following the Gardner steps: re-collection of Campuloclinium alternifolium (Compositae) after 177 years." Phytotaxa 309, no. 2 (2017): 189. http://dx.doi.org/10.11646/phytotaxa.309.2.12.
Full textAbstract:
Campuloclinium alternifolium was re-collected in southeastern Tocantins State, Brazil, after the Gardner collection in 1840. This new material reveals opposite, slightly decussate cauline leaves in contrast with the original description. Ecological insights are provided in order to locate new populations of this poorly known species, and detailed pictures are presented for the first time. The species name is lectotypified.
33
Subedi, Ishwar, Christina Harnisch, Gerhard Kater, and Tulashi Adhikari. "Millet (Eleusine coracana) Flour Fortification in Composite Bread." Journal of Food Science and Technology Nepal 7 (June 16, 2014): 86–89. http://dx.doi.org/10.3126/jfstn.v7i0.10614.
Full textAbstract:
Composite bread prepared by wheat our (550 types, moisture 10.85%) and millet (Eleusine coracana) flour (moisture 10.8%) were determined to evaluate bread qualities by 2 methods. The first method included application of raw millet flour, where as the second methods included cooked (gelatinized) millet flour before baking. The breads were named as (0MB) only from wheat flour followed by (10CCMB), (20CCMB) and (30CCMB) using 10, 20 and 30 % coarse (669µm) cooked millet flour respectively where as (10FCMB) and (10FUMB) were named as fine (431µm) sized millet flour. The former was gelatinized where as the later wasn’t. These composite breads were made from a blend of 90, 80 and 70 parts of wheat flour with 10, 20 and 30 parts of millet flour respectively. The bread with 10, 20 and 30% composite flour were similar in crumb porosity, texture, smell and taste where as 30% millet flour had higher dough and bread yield. DOI: http://dx.doi.org/10.3126/jfstn.v7i0.10614 J. Food Sci. Technol. Nepal, Vol. 7 (86-89), 2012
34
CALVO, JOEL, MÉLICA MUÑOZ-SCHICK, and ANDRÉS MOREIRA-MUÑOZ. "Towards a better understanding of Xenophyllum esquilachense (Senecioneae, Compositae), a poorly known Andean species." Phytotaxa 382, no. 3 (2018): 288. http://dx.doi.org/10.11646/phytotaxa.382.3.5.
Full textAbstract:
Xenophyllum esquilachense is a poorly known Andean species that was hitherto considered endemic to southern Peru. It is recorded for the first time from Bolivia and northern Chile, and the name Senecio pfisteri is synonymized with it. New insights on its global occurrence, ecology, and taxonomy are provided, as well as pictures of living plants and an updated dichotomous key to the Xenophyllum species from southern Andes.
35
Zhong, Xiao Ping, and Peng Jin. "Structural Optimization of Composite Wing Based on Different Blending Models Using Genetic Algorithm." Applied Mechanics and Materials 401-403 (September 2013): 886–90. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.886.
Full textAbstract:
In previous studies guide-based blending including inner and outer blending has been found to be an efficient way to deal with large composite optimization problem considering structural integrity. A new blending model named generalized blending based on genetic algorithm for composite optimization is presented. First, On the basis of region division, a length-control indicator is introduced to decide the covered regions of each ply for the generalized blending model. Also, the master-slave parallel genetic algorithm (GA) is adopted to decrease optimization time. Finally, the three blending models are used for a large composite wing optimization. The result shows that the three optimal designs are manufacturable and the generalized blending model has more design freedom in blending designs.
36
Palma, Luís Manuel. "Tracking the ancestral Portuguese name of the osprey across the Atlantic: hints from language, literature, history and geography." Arquivos de Zoologia 48, no. 4 (2017): 115. http://dx.doi.org/10.11606/issn.2176-7793.v48i1p115-130.
Full textAbstract:
Guincho, the traditional Portuguese name of the osprey (Pandion haliaetus) is unique and ancestral. It is found in several sorts of fictional literature from the 16th up to the early 20th centuries in the form of a metaphor born from an old popular proverb. The first time the name appears as the vernacular designation of the osprey is in a 17th falconry treatise, and then in old dictionaries and early ornithological monographs and catalogues throughout the 18th to early 20th centuries. In Portugal, however, the name barely survives, partly due to the species demise in the country during the 20th century, but mainly because it was gradually replaced by an erudite term in ornithological literature since the middle 19th century. However, given the conspicuousness of the species and its nests, the name and its composites are retained in a number of places along the coast. And, following the Portuguese diaspora of the 16th-18th centuries, the term spread to the archipelagos of Madeira, Cape Verde and the Canaries where it impregnated the local vocabulary and again gave the name to many coastal places. Then, it moved from the Canaries to the Spanish speaking areas of the Caribbean riding the mass migration of Canary Islanders to the new colonies. In consequence, the traditional Portuguese name of the osprey is still fully used in several island countries across the Atlantic. The remarkable presence of the ancestral Portuguese name of the osprey in language, literature and geography allows its rehabilitation as the proper popular name of the species and sanctions its legitimacy as a tool for reconstructing the ancient historical ranges of the osprey. Ultimately, revaluing the name is also a matter of cultural preservation, which compliments and enriches the current efforts for the species recovery in Portugal.
37
Moskovsky, S. V., A. S. Noskov, and V. S. Rudnov. "New Composite Dispersion Reinforcement Materials with Modulated Characteristics." Solid State Phenomena 265 (September 2017): 227–30. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.227.
Full textAbstract:
The Institute of Civil Engineering of the "Ural Federal University Named after the first President of Russia B.N. Yeltsin" (UrFU) has carried out the research to improve the deformation-strength characteristics of the most common building material, i.e. concrete. One method to improvement the properties is the disperse reinforcement of the entire volume of concrete with fine fibers. The research and mathematical modeling of the dependence of the characteristics of the composite material on the properties of the dispersed phase (the properties of the fiber material of the fiber) and the dispersion medium (the structure of the concrete) will allow in-situ prediction of the strength of the structures being manufactured and to determine the ratio and quality of the raw feed components of the mixture.
38
Su, Qianqian, Rui Zhang, and Rui Xue. "Secure Outsourcing Algorithms for Composite Modular Exponentiation Based on Single Untrusted Cloud." Computer Journal 63, no. 8 (2020): 1271. http://dx.doi.org/10.1093/comjnl/bxz165.
Full textAbstract:
Abstract Modular exponentiation, as a fundamental operation used in many public-key cryptosystems, has always be considered to be very time-consuming. It is difficult for some devices with limited computation capability, such as mobile devices and low-cost radio frequency identification (RFID) tags, to perform large-scale modular exponentiations. In cryptosystems, one typical case of modular exponentiation is that the modulus is a composite number. For instance, in RSA algorithm, the modulus is the product of two distinct prime numbers. In this paper, we investigate how to securely and efficiently outsource composite modular exponentiations and put forward two secure outsourcing algorithms for composite modular exponentiations based on single untrusted cloud. The first algorithm, named MCExp, is designed for outsourcing single composite modular exponentiation, i.e. $u^a$ mod $N$. The second algorithm, named SMCExp, is designed for outsourcing simultaneous composite modular exponentiation, i.e. $\prod ^{n}_{i=1}u^{a_i}_{i}$ mod $N$. Different from algorithms based on two untrusted servers, the proposed algorithms are very practical because they avoid the strong assumption that there must exist two servers without collusion. The proposed algorithms not only protect the privacy of the exponent and the base simultaneously, but also enable users to verify the correctness of the result returned by the cloud with high probability. Compared with using the square-and-multiply algorithm, the user can achieve higher efficiency by using the proposed algorithms. Besides, we prove the security of our algorithms and conduct several experiments to demonstrate the efficiency of the proposed algorithms. Finally, we show that the proposed algorithms can be used to construct the secure outsourcing algorithms for Shamir’s identity-based signature and identity-based multi-signature.
39
Ansari, R., R. Hassani, R. Gholami, and H. Rouhi. "Buckling and Postbuckling of Plates Made of FG-GPL-Reinforced Porous Nanocomposite with Various Shapes and Boundary Conditions." International Journal of Structural Stability and Dynamics 21, no. 05 (2021): 2150063. http://dx.doi.org/10.1142/s0219455421500632.
Full textAbstract:
Within the framework of a variational mixed formation and higher-order shear deformation theory (HSDT), a numerical approach is developed in this research to investigate the buckling and post buckling behaviors of variously-shaped plates made of functionally graded graphene platelet-reinforced composites (FG-GPLRCs) taking the effect of porosity into account. By the proposed approach, which can be named as VDQ-FEM, thick and moderately thick plate-type structures with different shapes (e.g. rectangular, skew, or quadrilateral) with arbitrary-shaped cutout (e.g. circular or rectangular) can be studied. Various types for porosity distribution scheme and GPL dispersion pattern including uniform and different functionally graded patterns are considered along the thickness of plate. In the computation of material properties, the closed-cell Gaussian Random field scheme and Halpin–Tsai micromechanical model are utilized. One of the key novelties of proposed approach is developing an efficient way according to the mixed formulation to accommodate the continuity of first-order derivatives on the common boundaries of elements for the used HSDT model. Several numerical examples are given to analyze the influences of porosity coefficient/distribution pattern, GPL weight fraction/dispersion pattern, cutout and boundary conditions on the buckling and postbuckling characteristics of FG-GPLR porous composite plates.
40
Poirel, Laurent, Amélie Carrër, Johann D. Pitout, and Patrice Nordmann. "Integron Mobilization Unit as a Source of Mobility of Antibiotic Resistance Genes." Antimicrobial Agents and Chemotherapy 53, no. 6 (2009): 2492–98. http://dx.doi.org/10.1128/aac.00033-09.
Full textAbstract:
ABSTRACT Antibiotic resistance genes are spread mostly through plasmids, integrons (as a form of gene cassettes), and transposons in gram-negative bacteria. We describe here a novel genetic structure, named the integron mobilization unit (IMU), that has characteristics similar to those of miniature inverted transposable elements (MITEs). Two IMUs (288 bp each) were identified from a carbapenem-resistant Enterobacter cloacae isolate that formed a composite structure encompassing a defective class 1 integron containing the carbapenem resistance gene bla GES-5. This ß-lactamase gene was located on a 7-kb IncQ-type plasmid named pCHE-A, which was sequenced completely. The plasmid pCHE-A was not self conjugative but was mobilizable, and it was successfully transferred from E. cloacae to Pseudomonas aeruginosa. The in silico analysis of the extremities of the IMU elements identified similarities with those of insertion sequence ISSod9 from Shewanella oneidensis MR-1. The mobilization of the IMU composite structure was accomplished by using the transposase activity of ISSod9 that was provided in trans. This is the first identification of MITE-type structures as a source of gene mobilization, implicating here a clinically relevant antibiotic resistance gene.
41
CALVO, JOEL, INÉS ÁLVAREZ, and CARLOS AEDO. "Systematics of Senecio section Crociseris (Compositae, Senecioneae)." Phytotaxa 211, no. 1 (2015): 1. http://dx.doi.org/10.11646/phytotaxa.211.1.1.
Full textAbstract:
The complexity of the evolutionary history of Senecio is reflected in its conflicted taxonomy. Within this genus, Senecio section Crociseris (Compositae, Senecioneae), a group of perennial herbs distributed in Europe, western and Central Asia, and northwestern Africa, was not fully revised. A worldwide revision of this section recognizing 28 species and eight subspecies is presented here. The main morphological characters revealed as useful for distinguishing between species are the number and shape of supplementary and involucral bracts, synflorescence architecture, indumentum, and the shape and size of leaves and achenes. In this new taxonomic treatment S. provincialis and S. lagascanus have been segregated from S. doronicum, within which three subspecies are recognized (S. doronicum subsp. orientalis is validly published herein). On the other hand, S. ruthenensis from France and S. lusitanicus from Portugal have been synonymized to S. lagascanus, as well as S. ovatifolius, S. pisidicus, and S. tmoleus from Anatolia to S. kolenatianus, S. olympicus, and S. castagneanus respectively, S. bertramii from Lebanon to S. cilicius, and S. delbesianus from Syria to S. racemosus subsp. racemosus. Sixty eight names are lectotypified, the names S. barrelieri, S. pyrenaicus, and S. scopolii are neotypified, and one epitype is designated for the name S. perralderianus. Descriptions and distribution maps are provided for all the species included, as well as an identification key. Nine species are illustrated for the first time.
42
Bieliaieva, Olena M., Valentyna Н. Synytsia, Olena V. Myronyk, et al. "COGNITIVE AND STRUCTURAL CHARACTERISTICS OF LATIN TERMS FOR INFECTIOUS AND INVASIVE DISEASES WITH A ZOOMORPHIC COMPONENT." Wiadomości Lekarskie 75, no. 2 (2022): 520–24. http://dx.doi.org/10.36740/wlek202202135.
Full textAbstract:
The aim was to analyze the morphological, structural and lexico-semantic presentation of the Latin terms denoting the infectious and parasitic diseases, part of which is a zoonymic component. Materials and methods: The presentation sample was made by the method of continuous sampling based on textbooks, manuals, including the three-volume edition “Infectious and parasitic diseases”, and a number of modern dictionaries. Structural, semantic and descriptive methods were used to address the aim of the research. Results: Monolexemic composites with a zoomorphic component are formed in a suffixal way. In multi-word phrases, syntactic constructions of mixed type, are usually used and they are characterized by the combination of words of Greek and Latin origin, but these formations are few. The eponymous and toponymic formations to denote specific nosological forms in helminthology are not typical. The data on the first contribution of a researcher to the description of the disease in the name of the term is not displayed, preference is still given to the name of the pathogen, rather than the name of the researcher. The prefix-suffix-based method of formation of terms denoting infectious and parasitic diseases with a zoonymic component is observed sporadically. Conclusions: The comparison of the above-analyzed terms with the corresponding terminological units of the English medical terminology indicates the predominant use of Latin terminological units. In contrast to many clinical terms with a zoomorphic component, where certain associative moments are taken into account.
43
Zopp, Camilo, Daisy Nestler, Jürgen Tröltzsch, et al. "CATPUAL - An Innovative and High-Performance Hybrid Laminate with Carbon Fibre-Reinforced Thermoplastic Polyurethane." Key Engineering Materials 742 (July 2017): 294–301. http://dx.doi.org/10.4028/www.scientific.net/kem.742.294.
Full textAbstract:
In consideration of environmental aspects and limited availability of resources, the focus of automotive and aerospace industry lies on significant weight optimisations especially for moving loads. In this context, innovative lightweight materials as well as material combinations need to be developed. A considerable potential for lightweight structures can be found in fibre- or textile-reinforced semi-finished products. Due to their specific characteristics and extraordinary structural diversity, thermoset and thermoplastic matrix systems can be used. In particular, carbon fibres as reinforcing components combined with a thermoplastic matrix polymer are able to create new high-performance applications. Besides the significant lightweight characteristics of the fibre-plastic-composites, in some instances contrary requirements must be satisfied in many areas, such as strength and ductility. In this field, the combination of fibre-reinforced polymers with aluminium or titanium sheets creates unique composite materials, so called hybrid laminates, which fulfil the unusual expectations.The focus of the current study lies on the development of a new thermoplastic hybrid laminate named CATPUAL (CArbon fibre-reinforced Thermoplastic PolyUrethane/ALuminium laminate). The structure of the laminate is an alternating sequence of thin aluminium sheets (EN AW 6082-T4) and fibre-reinforced thermoplastic polyurethane (TPU). The individual layers are consolidated to each other by using a hot pressing process. First results showed that the impregnation capability of thermoplastic polyurethane surpasses any other commercially available hybrid laminates. Furthermore, the mechanical properties regarding bending strength and interlaminar shear strength are exceeding the state of the art drastically.
44
Álvarez, Nicolás, Juan Luis Heredia, and María Natalia León. "Economic sensor for Misiones province from 2005 to 2018." Visión de Futuro, no. 23, No 2 (Julio - Diciembre) (July 1, 2019): 195–213. http://dx.doi.org/10.36995/j.visiondefuturo.2019.23.02.004.en.
Full textAbstract:
This paper presents the construction of a composite indicator of economic activity for the province of Misiones for the period 2005 – 2018, in order to measure fluctuations of economic and growth cycles. The methodologies proposed by The Conference Board (2001) and Jorrat (2003), that are referents at international and national levels respectively, are used. This methodology gives less weight to time series which variations have more volatility. After selecting eleven component series from public sources of information and representatives from different sectors of the provincial economic activity, seasonally adjusted using X-13 ARIMA and aggregating them, it is obtained a composite indicator representative for the economic activity, named Misiones Economic Sensor (MisES). This indicator is a first approximation of provincial economic activity’s fluctuations, and given that cross correlation with EMAE (Mensual Estimator of Economic Activity) is 0.93 when t=0, it is presumed that it is represents fluctuations observed in the provincial economy.
45
Al-Mohammadi, Suha H., and Enas J. Khadeem. "Identification Of Silymarin In Echinopus tenuisectus Family Compositae." Journal of Biotechnology Research Center 1, no. 1 (2007): 27–43. http://dx.doi.org/10.24126/jobrc.2007.1.1.12.
Full textAbstract:
This study emphasized on the detection and identification of silymarin (Silybinin) Flavonoid in a newly studied, wild Iraqi plant, named Echinopus tenuisectus of Compositae family. The medicinal importance of silymarin on the one hand, and the absence of any phytochemical investigation on tenuisectus specie of Echinopus genus on the other hand, acquired this study its importance. Silymarin was identified in the plant extract of both, the aerial part’s and the seed’s extracts, by two chromatographic methods, first Thin Layer Chromatography (TLC) using TLC ready made Gf254 plates, UV detector at 254 nm, and three different solvent systems in which the Rf value of the standard silymarin matched with the Rf value of the plant extract silymarin. HPLC was the other chromatographic method that proved the presence of silymarin in the plant extract by identical retention times. The result indicated that the silymarin content in the seed extract was higher than that in the plant extract of the aerial parts.
46
KHADEEM, ENAS JAWAD. "IDENTIFICATION OF QUERCETIN IN Echinops tenuisectus Family Compositae." Al Mustansiriyah Journal of Pharmaceutical Sciences 4, no. 1 (2007): 64–79. http://dx.doi.org/10.32947/ajps.v4i1.381.
Full textAbstract:
This study is emphasized on the detection and identification of Quercetin Flavonoid in a newly studied, wild Iraqi plant, named Echinops tenuisectus of Compositae family. The medicinal importance of Quercetin on one hand, and the absence of any phytochemical investigation on tenuisectus specie of Echinops genus on the other hand, acquired this s importance. יstudy it Quercetin was identified in the plant extract of both, the aerial part’s and the seed’sextracts, by two chromatographic methods, first Thin Layer Chromatography (TLC) using TLC ready made Gf254 plates, UV detector at 254 nm, and tow different solvent systems in which the Rf value of the standard quercetin matched with the Rf value of the plant extract quercetin. HPLC was the other chromatographic method that proved the presence of quercetin in the plant extract by identical retention times. The result indicated that the quercetin content in the seed extract was higher than that in the plant extract of the aerial parts.
47
Calvo, Joel. "Synopsis of the Genus Pentacalia (Compositae, Senecioneae) in Bolivia." Annals of the Missouri Botanical Garden 106 (October 7, 2021): 340–71. http://dx.doi.org/10.3417/2021649.
Full textAbstract:
The Neotropical genus Pentacalia Cass. (Compositae, Senecioneae) is distributed from southern Mexico to northwestern Argentina, plus two disjunct species that thrive in Brazil. Most species diversity occurs in the montane forests of Colombia, Ecuador, and Peru. It comprises scandent woody plants characterized by displaying alternate leaves (opposite in three species), involucres with supplementary bracts, usually yellow ray florets (when present), sagittate to caudate anther bases, and truncate to obtuse style branches with a crown of sweeping trichomes (sometimes with a tuft of longer trichomes, but not strictly penicillate). The Bolivian species were revised for the first time by Cabrera (1985), who treated the group under Senecio L. sect. Streptothamni Greenm. Because of the subsequent addition of new species and the need of taxonomic arrangements, an updated synopsis of the genus recognizing 18 species is presented. The names P. brittoniana (Hieron.) Cuatrec. and P. miguelii (Cuatrec.) Cuatrec. are synonymized with P. psidiifolia (Rusby) Cuatrec., as well as P. inquisiviensis H. Rob. & Cuatrec. with P. cardenasii (Cuatrec.) Cuatrec. and P. sailapatensis (Cuatrec.) Cuatrec. with P. urubambensis (Cabrera) Cuatrec. Seven names are lectotypified and an epitype is designated for the name P. zongoensis (Cabrera) J. Calvo. The new species P. viburnifolia J. Calvo & A. Fuentes is described. Revised nomenclature, succinct descriptions, taxonomic discussions, lists of specimens examined, and distribution maps are provided for all accepted species, in addition to an identification key. Pictures of living plants are also presented for eight species.
48
Liu, Wuji, Jun Qiang, Xixi Li, Ping Guan, and Yunlong Du. "UAV Image Small Object Detection Based on Composite Backbone Network." Mobile Information Systems 2022 (April 13, 2022): 1–11. http://dx.doi.org/10.1155/2022/7319529.
Full textAbstract:
Small objects in traffic scenes are difficult to detect. To improve the accuracy of small object detection using images taken by unmanned aerial vehicles (UAV), this study proposes a feature-enhancement detection algorithm based on a single shot multibox detector (SSD), named composite backbone single shot multibox detector (CBSSD), which uses a composite connection backbone to enhance feature representation. First, to enhance the detection effect of small objects, the lead backbone network, VGG16, is kept constant, and ResNet50 is added as an assistant backbone network, and the residual structure in ResNet50 is used to obtain lower feature information. The obtained lower feature information is then fused to the lead network through feature fusion, allowing the lead network to retain rich lower feature information. Finally, the lower feature information in the prediction layer increases. The experimental results show that CBSSD has a significantly higher recognition rate and a lower false detection rate than conventional algorithms, and it still maintains a good detection effect under low illumination. This is of great significance to small object detection using images taken by UAVs in traffic scenes. Furthermore, a method to improve the SSD algorithm is proposed.
49
Akhtar, S., M. A. Alam, and H. Ahmad. "Fabrication of Nanosized Reactive Nickel Oxide Composite Particles for Degradation of Textile Dye." Journal of Scientific Research 9, no. 4 (2017): 413–20. http://dx.doi.org/10.3329/jsr.v9i4.32726.
Full textAbstract:
In this research we focused on to develop new nanocomposite materials that have capacity to de-colorize and degrade industrial effluent. At first NiO nanoparticle were synthesized by simple liquid phase process using Ni(NO3)2.6H2O and NH4OH followed by calcinations of the produced Ni(OH)2 as precursor at 400°C. NiO nanoparticles were modified to produce NiO/SiO2 nanocomposite particles. Finally tri-layered inorganic/organic nanocomposite particles were prepared by seeded polymerization of epoxide functional monomer, glycidyl methacrylate (GMA) in presence of NiO/SiO2 nanocomposite seed particles. The composite particles were named as NiO/SiO2/PGMA and the obtained particles were utilized as a photocatalyst for the UV-light assisted degradation of congo red (CR), a model azo dye. Degradation efficiency decreased with the increase of initial CR concentration and a maximum efficiency of 100% was achieved when the CR concentration was 40 mg/L.
50
Louviot, Manon. "UNCOVERING THE DOUAI FRAGMENT: COMPOSING POLYPHONY AND ENCODING A COMPOSER IN THE LATE FOURTEENTH CENTURY." Early Music History 40 (October 2021): 85–166. http://dx.doi.org/10.1017/s0261127920000121.
Full textAbstract:
Douai, Bibliothèque Marceline Desbordes-Valmore, MS 1105/3 fragment 74.4/1 is a musical fragment from the second half of the fourteenth century, composed of two bifolios copied in black mensural notation. It not only contains a concordance for Multipliciter amando, a motet that, until now, has only survived in the famous Chantilly manuscript, but also four unica (another complete motet, two incomplete ones and a three-voice Gloria). After presenting a codicological overview of the fragment, I analyse distinctive features of each of the three complete pieces, based on the first modern transcription of the source. Special attention is given to the motet Ferre solet, which, by way of literary encoding mechanisms, reveals its composer’s name (Frater Johannes Vavassoris) and its precise date of composition (1373), making these four folios a crucial witness for understanding fourteenth-century musical culture.