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Auswahl der wissenschaftlichen Literatur zum Thema „Solitaire bridge“
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Zeitschriftenartikel zum Thema "Solitaire bridge"
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Hendricks, Paul, Joseph Johnson, Susan Lenard und Coburn Currier. „Use of a Bridge for Day Roosting by the Hoary Bat, Lasiurus cinereus“. Canadian Field-Naturalist 119, Nr. 1 (01.01.2005): 132. http://dx.doi.org/10.22621/cfn.v119i1.92.
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The Hoary Bat (Lasiurus cinereus) is a migratory species with the widest distribution of all New World bats. It is a solitary species that roosts during the day and night primarily among tree foliage. During a survey of 130 highway structures (bridges and culverts) in south central Montana for evidence of use by bats, we discovered a female Hoary Bat with young in mid July 2003 using a wooden bridge as a day roost. This is the first report of Hoary Bats using a bridge as roosting habitat.
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Mazinani, Iman, Mohammad Mohsen Sarafraz, Zubaidah Ismail, Ahmad Mustafa Hashim, Mohammad Reza Safaei und Somchai Wongwises. „Fluid-structure interaction computational analysis and experiments of tsunami bore forces on coastal bridges“. International Journal of Numerical Methods for Heat & Fluid Flow 31, Nr. 5 (22.03.2021): 1373–95. http://dx.doi.org/10.1108/hff-02-2019-0127.
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Purpose Two disastrous Tsunamis, one on the west coast of Sumatra Island, Indonesia, in 2004 and another in North East Japan in 2011, had seriously destroyed a large number of bridges. Thus, experimental tests in a wave flume and a fluid structure interaction (FSI) analysis were constructed to gain insight into tsunami bore force on coastal bridges. Design/methodology/approach Various wave heights and shallow water were used in the experiments and computational process. A 1:40 scaled concrete bridge model was placed in mild beach profile similar to a 24 × 1.5 × 2 m wave flume for the experimental investigation. An Arbitrary Lagrange Euler formulation for the propagation of tsunami solitary and bore waves by an FSI package of LS-DYNA on high-performance computing system was used to evaluate the experimental results. Findings The excellent agreement between experiments and computational simulation is shown in results. The results showed that the fully coupled FSI models could capture the tsunami wave force accurately for all ranges of wave heights and shallow depths. The effects of the overturning moment, horizontal, uplift and impact forces on a pier and deck of the bridge were evaluated in this research. Originality/value Photos and videos captured during the Indian Ocean tsunami in 2004 and the 2011 Japan tsunami showed solitary tsunami waves breaking offshore, along with an extremely turbulent tsunami-induced bore propagating toward shore with significantly higher velocity. Consequently, the outcomes of this current experimental and numerical study are highly relevant to the evaluation of tsunami bore forces on the coastal, over sea or river bridges. These experiments assessed tsunami wave forces on deck pier showing the complete response of the coastal bridge over water.
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Istrati, Denis, Ian G. Buckle, Pedro Lomonaco, Solomon Yim und Ahmad Itani. „TSUNAMI INDUCED FORCES IN BRIDGES: LARGE-SCALE EXPERIMENTS AND THE ROLE OF AIR-ENTRAPMENT“. Coastal Engineering Proceedings, Nr. 35 (23.06.2017): 30. http://dx.doi.org/10.9753/icce.v35.structures.30.
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In this study large scale hydraulic experiments of tsunami waves impacting a straight composite I-girder bridge were conducted in the LWF at Oregon State University. Both solitary waves and turbulent bores were tested and the experimental results revealed the existence of 4 different phases in the vertical force histories, among which is (i) a phase with a large applied moment and bridge rotation at the time of the first impact of the tsunami bore on the bridge, and (ii) a phase with a governing uplift mode of the bridge during the passage of the wave through the bridge. The first phase introduced the largest tensile forces in the offshore bearings and must be considered in order to prevent the progressive damage of bearings. In addition, the air-entrapment occurring in bridges with diaphragms was seen to (a) alter significantly the pattern of the applied pressures on the girders and below the deck in the internal chambers, (b) consistently increase the total uplift forces for all examined wave heights, and (3) cause a complex nonlinear wave-air interaction phenomenon with significant 3D effects.
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Moideen, Rameeza, Manasa Ranjan Behera, Arun Kamath und Hans Bihs. „NUMERICAL MODELLING OF SOLITARY AND FOCUSED WAVE FORCES ON COASTAL-BRIDGE DECK“. Coastal Engineering Proceedings, Nr. 36 (30.12.2018): 12. http://dx.doi.org/10.9753/icce.v36.structures.12.
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In the recent past, coastal bridges have been subjected to critical damage due to extreme wave attacks during natural calamities like storm surge and tsunami. Various numerical and experimental studies have suggested different empirical equations for wave impact on deck. However, they do not account the velocities of the wave type properly, which requires a detailed investigation to study the impact of extreme waves on decks. Solitary wave assumption is more suitable for shallow water waves, while the focused wave has been used widely to represent extreme waves. The present study aims to investigate the focused wave impact on coastal bridge deck using REEF3D (Bihs et al., 2016).
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Moideen, Rameeza, Manasa Ranjan Behera, Arun Kamath und Hans Bihs. „Effect of Girder Spacing and Depth on the Solitary Wave Impact on Coastal Bridge Deck for Different Airgaps“. Journal of Marine Science and Engineering 7, Nr. 5 (11.05.2019): 140. http://dx.doi.org/10.3390/jmse7050140.
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Coastal bridge damage has become a severe issue of concern in the recent past with the destruction of a considerable number of bridges under the impact of waves during tsunami and storm surges. These events have become more frequent, with waves reaching the bridge deck and causing upliftment and destruction. Past studies have demonstrated the establishment of various theoretical equations which works well for the submerged deck and regular wave types but show much scatter and uncertainty in case of a deck that is above still water level (SWL). The present study aims to generate a solitary wave to represent an extreme wave condition like a tsunami in the numerical wave tank modeled using the open source computational fluid dynamics (CFD) model REEF3D and to study the vertical impact force on the coastal bridge deck. A parametric study is carried out for increasing wave heights, girders spacing and depth for varying airgaps to analyze the effect of these parameters on the peak vertical impact force. It is observed that increasing the girder spacing and girder depth is effective in reducing the peak vertical impact force for the cases considered.
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Pan, Ruihua, und Melvin T. Tyree. „How does water flow from vessel to vessel? Further investigation of the tracheid bridge concept“. Tree Physiology 39, Nr. 6 (16.03.2019): 1019–31. http://dx.doi.org/10.1093/treephys/tpz015.
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Abstract Hydraulic safety and efficiency have become the central concept of the interpretation of the structure and function of vessels and their interconnections. Plants form an appropriate xylem network structure to maintain a balance of hydraulic safety vs efficiency. The term ‘tracheid bridge’ is used to describe a possible pathway of water transport between neighboring vessels via tracheids, and this pathway could also provide increased safety against embolisms. However, the only physiological study of such a structure thus far has been in Hippophae rhamnoides Linn. To test the function of tracheid bridges, this research examined four species that have relatively long and solitary vessels, which are two of the criteria for efficient tracheid bridges. Tracheids contributed less than 2.2% of the total conductance of the vessels in these species, but in theory, tracheids could serve as very efficient transport connector pathways that may or may not make direct vessel-to-vessel contact via pit fields between adjacent vessels. In some species, tracheid bridges may represent the dominant pathway for water flow between vessels, whereas in other species, tracheid bridges may be sub-dominant or virtually nil. Broader searches of woody taxa are needed to reveal the functional importance of tracheid bridges in vascular plants.
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Araki, Susumu, Kazuo Ishino und Ichiro Deguchi. „STABILITY OF GIRDER BRIDGE AGAINST TSUNAMI FLUID FORCE“. Coastal Engineering Proceedings 1, Nr. 32 (27.01.2011): 56. http://dx.doi.org/10.9753/icce.v32.structures.56.
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The horizontal and vertical components of the fluid force and pressure acting on a girder bridge due to tsunami like a solitary wave are measured in a hydraulic experiment and their characteristics are discussed. The peak of the impact fluid force is estimated on the basis of the change in the added mass of the structure. The wave pressure acting on the seaward side of the girder of the bridge is also estimated. The critical force for the stability of the girder bridge is estimated as the strength of bolts used in the shoes against shear stress.
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Mira-Albanés, Jhon Jader, José Gregorio Rodríguez-Nieto und Olga Patricia Salazar-Díaz. „Some Baumslag–Solitar groups are two-bridge virtual knot groups“. Journal of Knot Theory and Its Ramifications 26, Nr. 04 (April 2017): 1750019. http://dx.doi.org/10.1142/s0218216517500195.
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In this paper, we give sufficient conditions on group presentations, with two generators and one relator, in order to be the group of a virtual knot diagram. Although those conditions are not enough, we use them to determine, completely, whether or not a Baumslag–Solitar group is the group of a two-bridge virtual knot. Moreover, we present a combinatorial proof of the fact that these groups are not two-bridge classical knot groups.
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Istrati, Denis, und Ian Buckle. „Role of Trapped Air on the Tsunami-Induced Transient Loads and Response of Coastal Bridges“. Geosciences 9, Nr. 4 (25.04.2019): 191. http://dx.doi.org/10.3390/geosciences9040191.
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In response to the extensive damage of coastal bridges sustained in recent tsunamis, this paper describes an investigation into tsunami-induced effects on two common bridge types, an open-girder deck with cross-frames and one with solid diaphragms. To this end, large-scale (1:5) physical models with realistic structural members and elastomeric bearings were constructed and tested under a range of unbroken solitary waves and more realistic tsunami-like transient bores. The flexible bearings allowed the superstructure to rotate and translate vertically, thus simulating the wave–structure interaction during the tsunami inundation. Detailed analysis of the experimental data revealed that for both bridge types the resistance mechanism and transient structural response is characterized by a short-duration phase that introduces the maximum overturning moment, upward movement, and rotation of the deck, and a longer-duration phase that introduces significant uplift forces but small moment and rotation due to the fact that the wave is approaching the point of rotation. In the former phase the uplift is resisted mainly by the elastomeric bearings and columns offshore of the center of gravity of the superstructure (C.G.), maximizing their uplift demand. In the latter phase the total uplift is distributed more equally to all the bearings, which tends to maximize the uplift demand in the structural members close to the C.G. The air-entrapment in the chambers of the bridge with diaphragms modifies the wave–structure interaction, introducing (a) a different pattern and magnitude of wave pressures on the superstructure due to the cushioning effect; (b) a 39% average and 148% maximum increase in the total uplift forces; and (c) a 32% average increase of the overturning moment, which has not been discussed in previous studies. Deciphering the exact effect of the trapped air on the total uplift forces is challenging because, although the air consistently increases the quasi-static component of the force, it has an inconsistent and complex effect on the slamming component, which can either increase or decrease. Interestingly, the air also has a complex effect on the uplift demand in the offshore bearings and columns, which can decrease or increase even more than the total deck uplift, and an inconsistent effect on the uplift force of different structural components introduced by the same wave. These are major findings because they demonstrate that the current approach of investigating the effect of trapped air only on the total uplift is insufficient. Last but not least, the study reveals the existence of significant differences in the effects introduced by solitary waves and transient bores, especially when air is trapped beneath the deck; it also provides practical guidance to engineers, who are advised to design the elastomeric bearings offshore of the C.G. for at least 60% and 50% of the total induced uplift force, respectively, for a bridge with cross-frames and one with diaphragms, instead of distributing the total uplift equally to all bearings.
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Martin, Allison N., Luke R. Wilkins, Deepanjana Das, Lily E. Johnston, Todd W. Bauer, Reid B. Adams und Victor M. Zaydfudim. „Efficacy of Radiofrequency Ablation versus Transarterial Chemoembolization for Patients with Solitary Hepatocellular Carcinoma ≤3 cm“. American Surgeon 85, Nr. 2 (Februar 2019): 150–55. http://dx.doi.org/10.1177/000313481908500220.
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Optimal treatment for small hepatocellular carcinoma (HCC) ≤ 3 cm remains controversial. Ablation and chemoembolization are considered for nonoperative candidates. This study compares survival among patients with solitary HCC ≤ 3 cm treated with radiofrequency ablation (RFA) and transarterial chemoembolization (TACE). Patients diagnosed with HCC ≤ 3 cm between 2005 and 2014 were included. Kaplan-Meier survival functions with log-rank tests were used to estimate recurrence-free survival and overall survival (OS) survival. Among 161 patients with solitary HCC ≤ 3 cm, 145 patients with mean age of 65.2 years (69.2) and 95 per cent prevalence of cirrhosis had operative treatment or TACE, and/or RFA. From this cohort, 27 (19%) patients had TACE, 27 (19%) patients had RFA, and 15 (10%) patients had TACE/RFA. The patients treated with definitive TACE, RFA, or TACE/RFA had a similar 1-year recurrence-free survival (23% vs 27% vs 36%, respectively, P = 0.445) and similar 5-year OS (21% vs 24% vs 33%, respectively, P = 0.287). Thirty-five (24%) patients were bridged to transplantation with TACE and/or RFA. The 5-year OS was significantly improved in patients bridged to transplantation (P < 0.001). Survival does not differ between patients with solitary HCC ≤ 3 cm treated with TACE or RFA. Patients who were bridged to transplantation had significantly greater OS compared with patients who were not transplanted.
Bücher zum Thema "Solitaire bridge"
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The Stepbystep Guide To Playing 250 Worlds Best Card Games Including Bridge Poker Family Games And Solitaires. Lorenz Books, 2010.
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Harrison, Douglas. Southern Gospel in the Key of Queer. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036972.003.0006.
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This chapter brings together the different facets of southern gospel's surreptitious modernity as developed in the book, consolidating them in the experience of nonheterosexuals in gospel music. For at least a generation, the fact of queer contributions to the music at all levels has operated as an open secret in southern gospel. Fundamentalism's absolute prohibition on homosexuality makes acceptance of their contributions impossible, of course. Nevertheless, the psychodynamic structure of the music invites nonconformists to identify with southern gospel's emphasis on the sojourning soul's solitary struggle to find spiritual peace in this dry and barren land. This chapter examines the gaygospel paradox as a microcosm of fundamentalism's conflict with the postmodern world. Moreover, using a personal voice informed by the author's own complicated queer identification with the music and its culture, this chapter attempts a redemption of the southern gospel sissy.
Buchteile zum Thema "Solitaire bridge"
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Scott, Sir Walter. „Chapter XXXI“. In The Bride of Lammermoor. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199552504.003.0033.
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* * * * * * * In which a witch did dwell, in loathly weeds, And wilful want, all careless of her needs; So choosing solitary to abide, Far from all neighbours, that her devilish deeds And hellish arts from people she might hide,...
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Haw, Richard. „Unfinished Business (1863–69)“. In Engineering America, 476–528. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190663902.003.0019.
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returned to Cincinnati in 1863 to find his two solitary bridge towers ready to receive the complex system of suspension cables, supporting beams, cable stays, and trusses he had designed. The work of completing the bridge took a further year and half, during which his wife Johanna passed away, a fact that led John to dabble for almost a year in séances. Fortunately, John’s triumph over the Ohio came just as New York was clamoring for someone to bridge the East River. It didn’t take long for the board of trustees to offer John a contract. Over the next two years, John worked feverishly at his drawing board. Unfortunately, the task would prove harder than even the most ardent sceptic had imagined, and John himself would not live to see it done. On June 28, 1869, John’s right foot was crushed by a ferry as he surveyed the Brooklyn waterfront, and he contracted lockjaw. He died in agony several weeks later.
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Barnett, Jeffrey E., und Jeffrey Zimmerman. „Private Practice Is a Solitary Pursuit“. In If You Build It They Will Come, herausgegeben von Jeffrey E. Barnett und Jeffrey Zimmerman, 143–47. Oxford University Press, 2019. http://dx.doi.org/10.1093/med-psych/9780190900762.003.0025.
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Private practice in mental health care is a rather solitary pursuit. Although mental health private practice may be a greatly rewarding experience, it brings with it a number of challenges that must be addressed to ensure clinical competence and effectiveness. This chapter addresses how consultation and collaboration with colleagues can be of benefit from a business perspective, from a clinical standpoint, and for the clinician’s own well-being. Numerous examples are provided to illustrate the potential risks associated with professional isolation and the many likely benefits associated with active and appropriate consultation with colleagues. The use of colleagues for office sharing to reduce expenses, for clinical consultation to provide better client care, and for emotional support are explained. The risk of developing burnout as a private mental health practitioner is explained and how the use of colleagues can help prevent it is illustrated.
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Christoff, Alicia Mireles. „Coda“. In Novel Relations, 192–98. Princeton University Press, 2019. http://dx.doi.org/10.23943/princeton/9780691193106.003.0006.
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This chapter discusses how much Victorian fiction and British psychoanalysis together teaches about relationality. It explains loneliness, wishfulness, restlessness, and aliveness as profoundly solitary emotions. Relational readings reveal that people are never more intensely related to other than when these emotions are felt. Although novel reading is a solitary activity, the chapter shows how intensely, if paradoxically, people are related to others while they read: to narrators, authors, characters, and other readers, and also to themselves, in the new forms of self-relation evolved by Victorian novels and consolidated by British object relations psychoanalysis. The chapter also talks about the contemporary psychoanalyst Christopher Bollas who has invented a new term to designate the opposite of trauma: “genera.” The psychic genera, in Bollas's theory, sponsors a very different kind of unconscious work. Rather than an open wound, it is a site of psychic incubation, an inner place to gather resources so that one may turn outward, to “novel experiences” that bring the self into renewing contact with ideational and affective states, often within an enriching interpersonal environment.
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El Shamsy, Ahmed. „Introduction“. In Rediscovering the Islamic Classics, 1–7. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691174563.003.0001.
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This introductory chapter provides a brief overview of the transformation of the Arabo-Islamic intellectual tradition that accompanied the adoption of printing in the Middle East. It brings to light the stories of the hitherto mostly invisible individuals who effected this transformation. Their motivations, goals, and approaches were diverse. All had to contend with the formidable challenges posed by centuries of cultural neglect of the classical literature: locating and obtaining manuscripts in the absence of catalogs, piecing together complete works out of scattered fragments, deciphering texts in spite of errors and damage, and understanding their meaning without recourse to adequate reference material. Their painstaking, frequently solitary, and often innovative efforts opened up the narrow postclassical manuscript tradition into a broad literature of printed, primarily classical works—the literature that today can be considered the essential canon of Islamic texts.
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D. B., Vishwas, Gowtham M., Gururaj H. L. und Sam Goundar. „Industrial Internet of Things 4.0“. In Advances in Computer and Electrical Engineering, 172–91. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3375-8.ch012.
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In the era of mechanical digitalization, organizations are progressively putting resources into apparatuses and arrangements that permit their procedures, machines, workers, and even the products themselves to be incorporated into a solitary coordinated system for information assortment, information examination, the assessment of organization advancement, and execution improvement. This chapter presents a reference guide and review for propelling an Industry 4.0 venture from plan to execution, according to base on the economic and scientific policy of European parliament, applying increasingly effective creation forms, and accomplishing better profitability and economies of scale may likewise bring about expanded financial manageability. This chapter present the contextual analysis of a few Industry 4.0 applications. Authors give suggestions coordinating the progression of Industry 4.0. This section briefly portrays the advancement of IIoT 4.0. The change of ubiquitous computing through the internet of things has numerous difficulties related with it.
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Fagan, Brian. „To Desert and Steppe“. In From Stonehenge to Samarkand. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195160918.003.0014.
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The vast reaches of central Asia are redolent with history, with stirring tales of Marco Polo’s epic journeys and all the romance of the Silk Road, an arduous caravan route that connected Asia and the West for hundreds of years. The archaeology of both central Asia and the Silk Road has yet to reveal all their secrets, for the area presents formidable obstacles for even the most experienced researchers and travelers. A century ago, the obstacles were even more severe—no rail lines, no roads beyond caravan tracks and horse trails, and endemic political instability, to say nothing of harsh deserts and high mountain passes. Despite these obstacles, Afghanistan, Tibet, and other countries along the Silk Road were the arena for what became known in the nineteenth century as the “great game,” the hide-and-seek struggle between Russia and Britain for control of a strategically vital area north of British India. Here, archaeological travel was in the hands of explorers and truly dedicated scientists, and certainly was not the domain of tourists. The logistics and enormous distances ensured that anyone traveling in central Asia vanished from civilization for months, and more often for years. During the nineteenth century, the occasional British army officer and political agent, and also French and German travelers, ventured widely through the region, although their concerns were predominantly military and strategic rather than scientific. The great game culminated in Colonel Francis Younghusband’s military and diplomatic expedition for Britain into Tibet in 1904, prompted by rumors that Russia had its eye on the country. After Younghusband’s return to India and because of his account of the fascinating, mountainous regions to the north, the rugged terrain that formed India’s northern frontier became a place where solitary young officers went exploring, hunting, or climbing mountains for sport. During this period, only a handful of travelers penetrated central Asia with scientific objectives, among them the Swedish explorer Sven Hedin, who traveled via Russia and the Pamirs to China in 1893–1897. He nearly died crossing the western Taklimakan Desert in the Tarim Basin to reach the Khotan River. This huge basin was a melting pot of different religions and cultures, a bridge for silk caravans between East and West.
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Dasgupta, Subrata. „Intermezzo“. In It Began with Babbage. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199309412.003.0010.
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By the end of World War II, independent of one another (and sometimes in mutual ignorance), a small assortment of highly creative minds—mathematicians, engineers, physicists, astronomers, and even an actuary, some working in solitary mode, some in twos or threes, others in small teams, some backed by corporations, others by governments, many driven by the imperative of war—had developed a shadowy shape of what the elusive Holy Grail of automatic computing might look like. They may not have been able to define a priori the nature of this entity, but they were beginning to grasp how they might recognize it when they saw it. Which brings us to the nature of a computational paradigm. Ever since the historian and philosopher of science Thomas Kuhn (1922–1996) published The Structure of Scientific Revolutions (1962), we have all become ultraconscious of the concept and significance of the paradigm, not just in the scientific context (with which Kuhn was concerned), but in all intellectual and cultural discourse. A paradigm is a complex network of theories, models, procedures and practices, exemplars, and philosophical assumptions and values that establishes a framework within which scientists in a given field identify and solve problems. A paradigm, in effect, defines a community of scientists; it determines their shared working culture as scientists in a branch of science and a shared mentality. A hallmark of a mature science, according to Kuhn, is the emergence of a dominant paradigm to which a majority of scientists in that field of science adhere and broadly, although not necessarily in detail, agree on. In particular, they agree on the fundamental philosophical assumptions and values that oversee the science in question; its methods of experimental and analytical inquiry; and its major theories, laws, and principles. A scientist “grows up” inside a paradigm, beginning from his earliest formal training in a science in high school, through undergraduate and graduate schools, through doctoral work into postdoctoral days. Scientists nurtured within and by a paradigm more or less speak the same language, understand the same terms, and read the same texts (which codify the paradigm).
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Berk, Laura E. „A New View of Child Development“. In Awakening Children's Minds. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195124859.003.0005.
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In my three decades of teaching university courses in child development, I have come to know thousands of students, many of whom were parents or who became parents soon after completing my class. I also served on boards of directors and advisory committees for child-care centers, preschools, elementary schools, and parent organizations. And my research continually drew me into classrooms, where for countless hours I observed and recorded preschool and school-age children’s activities, social interactions, and solitary behaviors, in hopes of answering central questions about how they learn. As a byproduct of those experiences, parents repeatedly approached me with concerns about how to foster their child’s development in the early years. Their fervent questions, at times riddled with doubt and anxiety, revealed that creating optimum learning environments for young children at home—and ensuring their access to development-enhancing experiences in child care, preschool, and school—have become mounting parental challenges. Consider the following problematic situations that parents recently raised with me: • Bob and Sharon, parents of a 4-year-old: Our daughter, Lydia, could recite her ABCs and count from 1 to 20 by age 2 1/2. When we looked for a preschool, many programs appeared to do little more than let children play, so we chose one with lots of emphasis on academics. To me, Lydia’s preschool seems like great preparation for kindergarten and first grade, but each morning, Lydia hates to go. Why is Lydia, who’s always been an upbeat, curious child, so unhappy? • Angela, mother of a 4-year-old and 6-year-old: My husband and I have demanding careers and need to bring work home in the evenings. I’ve read that it’s the quality of time we spend with our children that’s important, not the quantity. We try hard to give Victor and Jeannine our undivided attention, but they’re often whiny, demanding, and quarrelsome. Many times we end up sending them to their rooms or letting them watch TV, just to get some peace after a long day. What’s the best way to create quality parent–child time? • Talia, mother of a 7-year-old: My son Anselmo, a first grader, constantly asks us to help him with his homework.
Konferenzberichte zum Thema "Solitaire bridge"
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Seiffert, Betsy, R. Cengiz Ertekin und Ian N. Robertson. „Experimental Investigation on the Role of Entrapped Air on Solitary Wave Forces on a Coastal Bridge Deck“. In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24571.
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Recent devastations caused by tsunami and hurricanes and the inevitability of future hurricanes making landfall have focused attention on the need to assess the vulnerability of coastal structures, and bridges in particular. Findings from a series of experiments conducted on an 1:35 scale bridge model with girders under a solitary-wave flow are presented here. Side panels are added to the bridge model to trap air pockets between the girders. A range of elevations is considered, including cases where the bottom of the deck is just above the water surface and girders are submerged, to where girders are fully elevated above the water surface. Wave parameters tested include four water depths and five wave amplitudes. A qualitative comparison is made between results for forces on the trapped-air model and results from the same set of wave parameters on a model where the side panels are removed and air is allowed to escape. Results show effects of water particle velocity, buoyancy, air compression and sloshing all have effects on both horizontal forces in the direction of wave propagation and vertical uplift forces. In particular, in the case where air is trapped between girders and cannot escape, uplift forces are considerably larger when bridge elevation is such that the girders are fully elevated above the still water level or are slightly submerged.
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Robertson, I. N., H. R. Riggs und A. Mohamed. „Experimental Results of Tsunami Bore Forces on Structures“. In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57525.
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A series of experiments has been carried out at the Tsunami Wave Basin (TWB) at Oregon State University (OSU) to determine the effect of tsunami bores on coastal and near-shore structures, especially buildings and bridges. The TWB is equipped with a piston-type wavemaker capable of generating clean solitary waves. The facility was used to model tsunami bores breaking over coastal reefs and their impact on structural components, including columns, walls, and horizontal members, such as building floors and bridge decks. Detailed wave height and velocity measurements were recorded as well. This paper focuses on the fluid forces of a bore impacting a wall/floor system. The experimental setup will be described and force results will be presented. The experimental results provide needed data to validate CFD models that can then be used to determine forces for a wider variety of situations.
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Bin, Wu, Yang Shuo, Liu Xiucheng, Wang Heying, Xiao Ting und He Cunfu. „Theoretical Model for Piezoelectric Energy Harvesting Device Based on Composite Granular Chain of Spheres“. In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10824.
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Abstract In this study, a simple and high-performance piezoelectric energy harvesting devices (PEHD) based on composite granular chain of spheres (CGCS) is investigated. The CGCS is constructed by inserting a light granular chain into the middle of a heavy granular chain. When an impact imposed to the CGCS, the energy of the impact will be carried by solitary wave propagating in the chain. The existence of the heavy-light interface and light-heavy interface makes the middle section of chain a container to trap the energy of the solitary wave. Therefore, the solitary wave will reflect back and forth in the container and experience slow energy attenuation. Piezoelectric wafer is embedded into one of the spheres of the container to act as a PEHD. Theoretical model of the proposed PEHD is given to explain the energy conversion process from external impact to the output voltage of the piezoelectric wafer. The bridge between the solitary wave-induced stress and the electric field is highlighted. Experiments are performed in CGCS to observe the solitary wave-induced voltage of the piezoelectric wafer and the measured waveform agree the theoretically prediction results. Finally, the effects of the differences in material properties of between the light and heavy spheres and the segment number of composite chain on the collected energy are investigated for improving the efficiency of capture energy. It is suggested that increasing the numbers of composite segments and enlarging the differences between the light and heavy sphere is helpful to improve the performance of CGCS-based PEHD.
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Seiffert, Betsy, und R. C. Ertekin. „Numerical modeling of solitary and cnoidal waves propagating over a submerged bridge deck“. In OCEANS 2012 - YEOSU. IEEE, 2012. http://dx.doi.org/10.1109/oceans-yeosu.2012.6263567.
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Örmeci, Ahmet Rifat, Tugba GURSOY KOCA, Selim DERECI und Mustafa AKCAM. „P227 Solitary juvenile polyp manifesting as spontaneous resection with rectal bleeding in a child“. In 8th Europaediatrics Congress jointly held with, The 13th National Congress of Romanian Pediatrics Society, 7–10 June 2017, Palace of Parliament, Romania, Paediatrics building bridges across Europe. BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health, 2017. http://dx.doi.org/10.1136/archdischild-2017-313273.315.
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Ji, Meng, Ke Chen, Yunxiang You und Ruirui Zhang. „Experimental Study of Wave Loading by Internal Solitary Waves on a Submerged Slender Body“. In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18474.
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Abstract Although ocean structures are complex, they all can be disassembled into a number of simple-shaped parts. One common shape is the slender body mentioned in this paper, and we focus on studying the mechanism of this shape. Experiments were carried out to study features of wave loads exerted by internal solitary waves (ISWs) on a submerged slender body. ISWs were generated by a piston-type wave maker in a large-type density stratified two-layer fluid wave flume. Using a three-component force transducer, the force variation of three degree of freedom (DOF) on the model was recorded. A satisfactory prediction method is established for ISWs on a submerged slender body based on internal solitary wave theory, Morison equation and pressure integral. Calculations based on this new prediction method are in good agreement with the experimental results. The experimental results and calculations show that, different incident angles, wave amplitude and layer thickness ratio have great effects on the wave loads, especially transverse incident waves bring much more severely influence. Besides the forces increase linearly with the wave amplitude becoming larger, and the maximums of the horizontal forces increase with the layer thickness ratio increasing.
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Hayatdavoodi, Masoud, und R. Cengiz Ertekin. „A Comparative Study of Nonlinear Shallow-Water Wave Loads on a Submerged Horizontal Box“. In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24572.
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This paper is concerned with calculations of the two-dimensional nonlinear vertical and horizontal forces and overturning moment due to the unsteady flow of an inviscid, incompressible fluid over a fully-submerged horizontal, fixed box. The problem is approached on the basis of the Level I Green-Naghdi (GN) theory of shallow-water waves. The main objective of this paper is to present a comparison of the solitary and cnoidal wave loads calculated by use of the GN equations, with those computed by Euler’s equations and the recent laboratory measurements, and also with a linear solution of the problem for small-amplitude waves. The results show a remarkable similarity between the GN and Euler’s models and the laboratory measurements. In particular, the calculations predict that the thickness of the box has no effect on the vertical forces and only a slight influence on the two-dimensional horizontal positive force. The calculations also predict that viscosity of the fluid has a small effect on these loads. The results have applications to various physical problems such as wave forces on submerged coastal bridges and submerged breakwaters.
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Shiva, G., und N. R. Raajan. „A smart way to bring the fiction of embedding 3D manifold elements using solitary marker into reality“. In 2013 IEEE Conference on Information & Communication Technologies (ICT). IEEE, 2013. http://dx.doi.org/10.1109/cict.2013.6558264.
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Caballero, Andrés. „V. Eusa’s Intervention in the 2nd Expansion of Pamplona: The artistic transformation of a technical model.“ In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.5996.
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V. Eusa’s Intervention in the 2nd Expansion of Pamplona: The artistic transformation of a technical model. Andrés Caballero Lobera Departamento de Arquitectura. Escuela Técnica Superior de Arquitectura de San Sebastián. Universidad del País Vasco (UPV/EHU) Pza. Oñati, 2, 20018 Donostia. E-mail: ander.caballero@ehu.eus Keywords (3-5): Eusa; Pamplona; Ensanche; Sitte; Propileos. Conference topics: City transformations.It is inevitable to be disappointed when we consciously compare today’s city with yesterday’s. Territorial occupancy was an arduous task which confronted man and nature. It was a collective act, the cultural manifestation of a society that aspired to artistically represent itself in the cities it built, both in buildings and public spaces. The city of the past, so conceived, successfully raised through time, and even today we can appreciate, in the human affection it brings about, the plastic value of its buildings and the ambient quality of its public spaces. Currently the contemporary city is just incapable of meeting a profound spiritual demand if it does not pursues a practical goal. In the Ensanche, one of its most renowned examples, the idea of the city imposes a restriction to the artistic or monumental value of the historic city in favour of a technical efficiency that facilitates the economic and administrative management of the new city. The unidentified reticular mesh so characteristic of the urban morphology of the Ensanche evinces the distortion of the hippodamian model which in past ages and also throughout time probed its validity to provide magnificent examples of cities thought and built also from artistic principles. In the late example of the 2nd Ensanche of Pamplona, we attend to the solitary labour of an architect such as Victor Eusa Razquin, who knew how to transform with his buildings the “technical” uniformity of the Ensanche by transforming, qualifying and enriching it with the incrustation of architectural episodes of elevated artistic value. References COLLINS, George R. y Christiane C. Camillo Sitte y el nacimiento del urbanismo moderno. Barcelona: Editorial Gustavo Gili, 1980. LYNCH, Kevin. La imagen de la ciudad. Barcelona: Gustavo Gili, 1998. ORDEIG CORSINI, José María. Diseño y normativa en la ordenación urbana de Pamplona (1770-1960). Pamplona: Dpto. de Educación y Cultura. Dirección General de Cultura - Institución Príncipe de Viana, 1992. SICA, Paolo. Historia del urbanismo, siglo XIX. Madrid: I.E.A.L. 1981. SITTE, Camilo. “Introduction” en, L’art de batir les villes. L’urbanisme selon ses fondements artistiques. Paris: Livre et communication, 1990.