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Journal articles on the topic 'Orb'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 January 2023

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1

Tuan, Ngo Anh, Nguyen Luong Hai, and Pham Huy Tung. "Modeling of organizing function management in Vietnam’s public construction works." Journal of Project Management 7, no. 4 (2022): 191–200. http://dx.doi.org/10.5267/j.jpm.2022.5.003.

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Organizing function is the significant component of management guaranteeing the success of construction works. Many studies have been emphasizing on the topic of critical success factors (CSFs) within construction works, yet the results have rarely emphasized examining organizing behaviors within public construction work management; these less researched topics were the aims of this study. To fulfil this research aim, a regression analysis design was employed. Data were collected using questionnaires conducted from 139 professionals involved in public construction works management in Vietnam. The structural equation modelling (SEM) technique with partial least-squares estimation (PLS) was utilized to analyze the data. The results revealed 6 behavioral dimensions (i.e., structure organizing (OR1), authorization organizing (OR2), coordination organizing (OR4), human resource organizing (OR3), job organizing (OR5), responsibility organizing (OR6) to assess organizing function in terms of public construction work management. The study also reveals that structure organizing (OR1), authorization organizing (OR2), coordination organizing (OR4) have significant effects on management effectiveness (ME). In addition, coordination organizing (OR4) acts as the mediator of Human resource organizing (OR3), job organizing (OR5); while responsibility organizing (OR6) indicates an indirect influence through the mediator of OR5. The success of this approach is expected to reinforce the contribution of organizing function and suggest a useful tool for supporting the professionals in enhancing public construction work management.
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Barzut, Vesna, and Suncica Zdravkovic. "Discrimination of faces of the same and other race and gender modulated by familiarity." Psihologija 46, no. 1 (2013): 45–59. http://dx.doi.org/10.2298/psi1301045b.

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This study aimed to replicate, for the first time on Serbian population, the own-race bias (ORB), a classical effect from the face perception domain. The ORB was additionally contrasted with familiarity and the own-gender bias (OGB). Recognition accuracy for own race faces was higher in comparison both to African (Z=3.29, p<0.01) and Asian faces (Z= 2.59, p<0.01). The introduction of famous faces led to a significant drop in the ORB. However, in all of the conditions a ?seen before? effect was measured, suggesting better recognition for own race faces, independent of familiarity. The OGB was obtained for own-race faces (?2(28, 7) = 119, 34 p <0, 05), while there were no differences in recognition accuracy between the own and the other-race faces of the other gender. These results imply that the ORB could be explained, at least partially, by the OGB. However, these results were obtained on an exclusively female sample.
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Yao, Xinqiang, Bin Liang, Hai Zhang, Ziliang Zhang, and Zheng He. "Typical brick masonry walls reinforced with high-strength mortar and steel bars in the horizontal joints." Advances in Structural Engineering 24, no. 12 (May 15, 2021): 2767–79. http://dx.doi.org/10.1177/13694332211012238.

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Based on investigation of rural buildings in china, there are more than 20% of the masonry structures constructed in 1970s. Thus, the old blue bricks (OBB) and old red bricks (ORB), which demolished from the typical brick masonry structures was built in 1970s, was chosen in the test. During demolishing the OBB and ORB, the original mortar was destroyed. Thus, the 1:7.8 cement mortar was chosen instead of original mortars and the 1:5 cement mortar was chosen as the reinforcement mortar. In order to know the performant of the reinforcement methods, there are three-level test plan was put forward in the study. Firstly, the mechanical properties of OBB and ORB and mortars was tested; Secondly, the experiment tested the shear strength of the reinforced and unreinforced masonry specimens along mortar joints; Thirdly, there are four walls (OBB reinforced wall and unreinforced wall, ORB reinforced wall and unreinforced wall) have been made for the pseudo-static tests. This research conducted physical performance tests on masonry bricks, masonry components, and masonry walls of typical masonry structures. Through experiments, the shear capacity of the masonry structure reinforced by high-strength mortar and steel bars can be obtained.
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Cui, Linyan, Chaowei Ma, and Fei Wen. "Direct-ORB-SLAM: Direct Monocular ORB-SLAM." Journal of Physics: Conference Series 1345 (November 2019): 032016. http://dx.doi.org/10.1088/1742-6596/1345/3/032016.

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5

Cowen, Ron. "Oversize Orb." Science News 170, no. 12 (September 16, 2006): 181. http://dx.doi.org/10.2307/4017243.

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6

Gordon, Audrey, and Stephen Wong. "The use of a structured guide to assess proxies of offending behaviours and change in custodial settings." Journal of Forensic Practice 17, no. 2 (May 11, 2015): 83–100. http://dx.doi.org/10.1108/jfp-10-2013-0048.

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Purpose – Within controlled environments such as prisons or forensic facilities, strong sanctions and other factors can inhibit the expression of offence-linked behaviours otherwise observable in community settings. For example, institutional restrictions may distort the offender’s habitual expression of aggressive behaviours such that the individual’s aggressive characteristics are less intense or observable. Thus, the influences of controlled settings can make it difficult for staff to capture idiosyncratic evidence of change or lack thereof over time or with treatment. The purpose of this paper is to describe an assessment and measurement framework that can be used to assist treatment and correctional staff collectively focus attention on relevant characteristics and behaviours idiosyncratically linked to offending. Design/methodology/approach – The authors use the terms “offence analogue behaviours (OAB)” to describe proxies of offence behaviours observable in controlled settings and “offence replacement behaviours (ORB)” as the contrasting positive, pro-social skills and strategies that the individual implements to change and manage problem areas linked to aggression and criminality. This paper discusses the application and practical utility of the framework and an associated assessment and measurement tool; the Offence Analogue and Offence Replacement Behaviour Guide (Gordon and Wong, 2009-2013). Findings – The OAB and ORB Guide has shown to be useful by directing the attention of treatment personnel to the here-and-now offence related behaviours displayed by offenders in custodial settings. In the absence of such focused attention, relevant proxy behaviours can often be masked in these highly controlled environments. The Guide is therefore a useful adjunct to identify such behaviours for treatment and for assessing treatment-related changes. Research limitations/implications – The OAB/ORB Guide was developed based on a conceptual framework derived from the empirical literature on correctional treatment, risk assessment, psychological theories and clinical practice. While there has been some positive pilot use of the Guide’s utility and preliminary research, at this point, empirical evidence is still lacking. Practical implications – The OAB/ORB Guide provides quantified and structured guidelines to assess offence proxy and offence replacement behaviours observable day-to-day within controlled environments, such as during custody or supervised release to the community. Originality/value – This guide was developed to assist staff with the identification, documentation and measurement of idiosyncratic negative and positive offence-related proxy behaviours observable across custodial or supervised contexts. Accordingly, the authors suggest that OAB/ORB guide information can be used to evaluate changes in risk over treatment and/or time. Further, the authors describe how this framework may enhance the efficacy of multi-disciplinary treatment and management teams. Two cases are used to illustrate the application of the Guide.
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7

Kelly, Devin, Julie Rizzo, Heather Yun, and Dana Blyth. "Microbiology and Clinical Characteristics of Industrial Oil Burns." Open Forum Infectious Diseases 4, suppl_1 (2017): S109. http://dx.doi.org/10.1093/ofid/ofx163.111.

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Abstract Background Injured oil workers are exposed to a broad microbiome in hydraulic fracturing fluids (HFF) and oil wells at the time of injury. This includes Pseudomonas, Stenotrophomonas, Acinetobacter, and rare human pathogens which may be harder to culture. This study evaluates oil-related burn (ORB) microbiology. Methods Patients admitted to the USAISR burn center enrolled in the Epidemiology of Workplace Burns and Injuries in Texas registry from April 2011 to November 2016 were included as cases and controls. Patients hospitalized ≤2 days were excluded. ORB was defined as exposure to HFF (FORB), or non-HFF (NFORB). Controls were patients admitted with industrial burns (non-ORB). Patient demographics and clinical cultures (days 1–15) were obtained through the registry and electronic medical record. Results 149 industrial burns were included, of which 35 (23%) were ORB and 114 (77%) were non-ORB. Of the ORB, 11 (31%) were FORB and 24 (69%) were NFORB. ORB had a median age, TBSA, and Baux score of 31, 25, and 58 compared with non-ORB with 36, 4, and 44, respectively (P &lt; 0.01). Twenty-five patients had positive cultures: 12 (48%) non-ORB and 13 (52%) ORB. Sixty Isolates identified from the ORB population included Flavobacterium, Pseudomonas, and Serratia. FORB accounted for three (25%) of the culture positive ORB. S. marcescens was isolated in 1 FORB (33%) compared with 0 NFORB and non-ORB (P &lt; 0.05). Otherwise, there was no statistical difference in isolates. Median time to first positive culture differed among non-ORB (4 days), FORB (13 days), and NFORB (3.5 days, P = 0.03). Forty-six (31%) patients had cultures obtained during admission: three (7%) FORB, 12 (26%) NFORB, and 31 (67%) non-ORB. Of cultured patients, ORB had a median TBSA and Baux score of 44 and 90 compared with non-ORB with 11 and 47, respectively (P &lt; 0.01). Comparing all cultured patients, ORB had more positive, negative, and total cultures compared with non-ORB with 2 vs. 0, 7 vs. 3, and 10 vs. 3, respectively (P &lt; 0.01). Conclusion Within this cohort, ORB was associated with more severe injuries compared with non-ORB. They had more positive, negative, and total cultures, and recovery of S. marcescens was associated with FORB. Larger studies with non-culture based technology could help further define the microbiology of this uniquely exposed population. Disclosures All authors: No reported disclosures.
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8

Naraine, Mahindra. "WARC-ORB-85." Telecommunications Policy 9, no. 2 (June 1985): 97–108. http://dx.doi.org/10.1016/0308-5961(85)90034-5.

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9

Tan, L., J. S. Chang, A. Costa, and P. Schedl. "An autoregulatory feedback loop directs the localized expression of the Drosophila CPEB protein Orb in the developing oocyte." Development 128, no. 7 (April 1, 2001): 1159–69. http://dx.doi.org/10.1242/dev.128.7.1159.

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The RRM-type RNA binding protein Orb plays a central role in the establishment of polarity in the Drosophila egg and embryo. In addition to its role in the formation and initial differentiation of the egg chamber, orb is required later in oogenesis for the determination of the dorsoventral (DV) and anteroposterior (AP) axes. In DV axis formation, Orb protein is required to localize and translate gurken mRNA at the dorsoanterior part of the oocyte. In AP axis formation, Orb is required for the translation of oskar mRNA. In each case, Orb protein is already localized at the appropriate sites within the oocyte before the arrival of the mRNAs encoding axis determinants. We present evidence that an autoregulatory mechanism is responsible for directing the on site accumulation of Orb protein in the Drosophila oocyte. This orb autoregulatory activity ensures the accumulation of high levels of Orb protein at sites in the oocyte that contain localized orb message.
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Barr, Justinn, Rudolf Gilmutdinov, Linus Wang, Yulii Shidlovskii, and Paul Schedl. "The Drosophila CPEB Protein Orb Specifies Oocyte Fate by a 3′UTR-Dependent Autoregulatory Loop." Genetics 213, no. 4 (October 8, 2019): 1431–46. http://dx.doi.org/10.1534/genetics.119.302687.

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orb encodes one of the two fly CPEB proteins. These widely conserved proteins bind to the 3′UTRs of target messenger RNAs (mRNAs) and activate or repress their translation. We show here that a positive autoregulatory loop driven by the orb gene propels the specification of oocyte identity in Drosophila egg chambers. Oocyte fate specification is mediated by a 3′UTR-dependent mechanism that concentrates orb mRNAs and proteins in one of the two pro-oocytes in the 16-cell germline cyst. When the orb 3′UTR is deleted, orb mRNA and protein fail to localize and all 16 cells become nurse cells. In wild type, the oocyte is specified when orb and other gene products concentrate in a single cell in region 2b of the germarium. A partially functional orb 3′UTR replacement delays oocyte specification until the egg chambers reach stage 2 of oogenesis. Before this point, orb mRNA and protein are unlocalized, as are other markers of oocyte identity, and the oocyte is not specified. After stage 2, ∼50% of the chambers successfully localize orb in a single cell, and this cell assumes oocyte identity. In the remaining chambers, the orb autoregulatory loop is not activated and no oocyte is formed. Finally, maintenance of oocyte identity requires continuous orb activity.
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Stepien, Barbara Krystyna, Cornelia Oppitz, Daniel Gerlach, Ugur Dag, Maria Novatchkova, Sebastian Krüttner, Alexander Stark, and Krystyna Keleman. "RNA-binding profiles of Drosophila CPEB proteins Orb and Orb2." Proceedings of the National Academy of Sciences 113, no. 45 (October 24, 2016): E7030—E7038. http://dx.doi.org/10.1073/pnas.1603715113.

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Localized protein translation is critical in many biological contexts, particularly in highly polarized cells, such as neurons, to regulate gene expression in a spatiotemporal manner. The cytoplasmic polyadenylation element-binding (CPEB) family of RNA-binding proteins has emerged as a key regulator of mRNA transport and local translation required for early embryonic development, synaptic plasticity, and long-term memory (LTM). Drosophila Orb and Orb2 are single members of the CPEB1 and CPEB2 subfamilies of the CPEB proteins, respectively. At present, the identity of the mRNA targets they regulate is not fully known, and the binding specificity of the CPEB2 subfamily is a matter of debate. Using transcriptome-wide UV cross-linking and immunoprecipitation, we define the mRNA-binding sites and targets of Drosophila CPEBs. Both Orb and Orb2 bind linear cytoplasmic polyadenylation element-like sequences in the 3′ UTRs of largely overlapping target mRNAs, with Orb2 potentially having a broader specificity. Both proteins use their RNA-recognition motifs but not the Zinc-finger region for RNA binding. A subset of Orb2 targets is translationally regulated in cultured S2 cells and fly head extracts. Moreover, pan-neuronal RNAi knockdown of these targets suggests that a number of these targets are involved in LTM. Our results provide a comprehensive list of mRNA targets of the two CPEB proteins in Drosophila, thus providing insights into local protein synthesis involved in various biological processes, including LTM.
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Crawford, Robert S., Faraz F. Hashmi, John E. Jones, Hassan Albadawi, Michael McCormack, Kyle Eberlin, Fateh Entabi, et al. "A novel model of acute murine hindlimb ischemia." American Journal of Physiology-Heart and Circulatory Physiology 292, no. 2 (February 2007): H830—H837. http://dx.doi.org/10.1152/ajpheart.00581.2006.

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The McGivney hemorrhoidal ligator (MHL), a band designed to cause tissue necrosis, is the preferred experimental tool to create hindlimb ischemia-reperfusion (I/R) injury in rodents. This report defines and compares the ex vivo band tension exerted by MHL and orthodontic rubber bands (ORBs) along with select in vivo characteristics of I/R. As to method, ex vivo band tension was measured over relevant diameters using a tensiometer. In vivo assessment of murine limb perfusion during ischemia with ORB and MHL was compared using laser Doppler imaging and measurement of wet weight-to-dry weight ratio. Neuromuscular scoring and histological extent of muscle fiber injury after I/R with MHL and ORB were also compared. A dose-response curve, between the duration of ORB-induced I/R with both mitochondrial activity (methyl-thiazol-tetrazolium) or tail perfusion [laser Doppler imaging (LDI)], was generated. As a results, ex vivo measurements showed that ORB exerted significantly less force than the MHL. Despite less tension in ORB, in vivo testing of the ORB confirmed complete ischemia by both LDI and wet weight-to-dry weight ratio. After I/R, caused by ORB, there was significantly less neuromuscular dysfunction. Histological assessment confirmed similar degrees of muscle fiber injury after I/R with either the MHL or ORB. Increasing durations of ischemia created by the ORB followed by reperfusion significantly decreased mitochondrial activity and tail perfusion after 24 h of ischemia. In conclusions, ORB produced similar levels of tissue ischemia in murine models of limb I/R with fewer levels of nonspecific injury. ORB may be the preferred model for selected studies of limb I/R.
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Sujiwo, Adi, Tomohito Ando, Eijiro Takeuchi, Yoshiki Ninomiya, and Masato Edahiro. "Monocular Vision-Based Localization Using ORB-SLAM with LIDAR-Aided Mapping in Real-World Robot Challenge." Journal of Robotics and Mechatronics 28, no. 4 (August 19, 2016): 479–90. http://dx.doi.org/10.20965/jrm.2016.p0479.

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[abstFig src='/00280004/06.jpg' width='300' text='Monocular Visual Localization in Tsukuba Challenge 2015. Left: result of localization inside the map created by ORB-SLAM. Right: position tracking at starting point.' ] For the 2015 Tsukuba Challenge, we realized an implementation of vision-based localization based on ORB-SLAM. Our method combined mapping based on ORB-SLAM and Velodyne LIDAR SLAM, and utilized these maps in a localization process using only a monocular camera. We also apply sensor fusion method of odometer and ORB-SLAM from all maps. The combined method delivered better accuracy than the original ORB-SLAM, which suffered from scale ambiguities and map distance distortion. This paper reports on our experience when using ORB-SLAM for visual localization, and describes the difficulties encountered.
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Ma, Chaoqun, Xiaoguang Hu, Jin Xiao, Huanchao Du, and Guofeng Zhang. "Improved ORB Algorithm Using Three-Patch Method and Local Gray Difference." Sensors 20, no. 4 (February 12, 2020): 975. http://dx.doi.org/10.3390/s20040975.

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This paper presents an improved Oriented Features from Accelerated Segment Test (FAST) and Rotated BRIEF (ORB) algorithm named ORB using three-patch and local gray difference (ORB-TPLGD). ORB takes a breakthrough in real-time aspect. However, subtle changes of the image may greatly affect its final binary description. In this paper, the feature description generation is focused. On one hand, instead of pixel patch pairs comparison method used in present ORB algorithm, a three-pixel patch group comparison method is adopted to generate the binary string. In each group, the gray value of the main patch is compared with that of the other two companion patches to determine the corresponding bit of the binary description. On the other hand, the present ORB algorithm simply uses the gray size comparison between pixel patch pairs, while ignoring the information of the gray difference value. In this paper, another binary string based on the gray difference information mentioned above is generated. Finally, the feature fusion method is adopted to combine the binary strings generated in the above two steps to generate a new feature description. Experiment results indicate that our improved ORB algorithm can achieve greater performance than ORB and some other related algorithms.
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HIAI, FUMIO, TAKUHO MIYAMOTO, and YOSHIMICHI UEDA. "ORBITAL APPROACH TO MICROSTATE FREE ENTROPY." International Journal of Mathematics 20, no. 02 (February 2009): 227–73. http://dx.doi.org/10.1142/s0129167x09005261.

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Motivated by Voiculescu's liberation theory, we introduce the orbital free entropy χ orb for non-commutative self-adjoint random variables (also for "hyperfinite random multi-variables"). Besides its basic properties, the relation of χorb with the usual free entropy χ is shown. Moreover, the dimension counterpart δ0, orb of χ orb is discussed, and we obtain the relation between δ0, orb and the original free entropy dimension δ0 together with applications to δ0 itself.
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Bogning, Sakaros, Frédéric Frappart, Gil Mahé, Adrien Paris, Raphael Onguene, Fabien Blarel, Fernando Niño, Jacques Etame, and Jean-Jacques Braun. "Investigating links between rainfall variations in the Ogooué River basin and ENSO in the Pacific Ocean over the period 1940–1999." Proceedings of the International Association of Hydrological Sciences 384 (November 16, 2021): 181–86. http://dx.doi.org/10.5194/piahs-384-181-2021.

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Abstract. This paper investigates links between rainfall variability in the Ogooué River Basin (ORB) and El Niño Southern Oscillation (ENSO) in the Pacific Ocean. Recent hydroclimatology studies of the ORB and surrounding areas resulting in contrasting conclusions about links between rainfall variability and ENSO. Thus, to make the issue clearer, this study investigates the links between ENSO and rainfall in the ORB over the period 1940–1999. The principal component analysis of monthly rainfall in the ORB was done. The temporal mode of the first component corresponds to the interannual variations of rainfall on the ORB. Also, the pattern of the spatial mode of the first component shows that the ORB is a homogeneous hydroclimatic zone. However, no leading mode is significantly correlated to the ENSO index. A cross-wavelet analysis of the time series of basin-scale rainfall and the ENSO index was therefore carried out. The result is a set of periodogram structures corresponding to some ENSO episodes recorded over the study period. And wavelet coherence analysis of both time series confirms that there are significant links between ENSO and rainfall in the ORB.
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Antonova, E. E., N. V. Sotnikov, V. G. Vorobjev, O. I. Yagodkina, I. P. Kirpichev, I. L. Ovchinnikov, M. S. Pulinets, and M. V. Stepanova. "PROBLEMS OF THE OUTER RADIATION BELT FORMATION AND TOPOLOGICAL FEATURES OF HIGH LATITUDE MAGNETOSPHERE." PHYSICS OF AURORAL PHENOMENA 44 (2021): 7–11. http://dx.doi.org/10.51981/2588-0039.2021.44.001.

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We analyzed the problems of formation of the outer radiation belt (ORB) taking into consideration the latest changes in our understanding of the high-latitude magnetospheric topology. This includes strong evidence that the auroral oval maps to the outer part of the ring current, meanwhile the ORB polar boundary maps inside the auroral oval. Our analysis also includes the variation of the plasma pressure distribution and the time of the acceleration of relativistic electrons during geomagnetic storm. It is shown that the maximum of ORB is formed after the geomagnetic storm in the region of plasma pressure maximum. The position of this maximum agrees with the prediction of the ORB formation theory based on the analysis of ring current development during storm. We emphasize the role of adiabatic processes in the ORB dynamics and the importance of the substorm injections during storm recovery phase for the formation of enhanced fluxes of ORB electrons after the storm.
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Eberhard, William G. "Modular patterns in behavioural evolution: webs derived from orbs." Behaviour 155, no. 6 (2018): 531–66. http://dx.doi.org/10.1163/1568539x-00003502.

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Abstract Imperfect knowledge of ancestral behaviour often hampers tracing behavioural evolution. This limitation is reduced in orb weaving spiders, because spider orb web construction behaviour and the cues used by modern orb-weavers are well-studied and highly conserved. Several species in orb-weaving families build non-orb webs that are clearly derived from orbs, allowing transitions from ancestral to modern behaviours to be described with high confidence. Three major patterns of general evolutionary significance were found in 69 phylogenetically independent transitions in 15 groups in 8 families: ancestral traits were often maintained as units; the most frequent of the eight different types of ancestral trait change was transfer of an ancestral behaviour to a new context; and ‘new’ traits that had no clear homology with ancestral traits were also common. Changes occurred in all major stages of orb construction. This may be the most extensive summary of evolutionary transitions in behaviour yet compiled.
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Hong, Ou Yang, and Xin Hua Deng. "Direction-Independent Band Gaps Extension Based on Thue-Morse Photonic Heterostructures Containing Negative-Index Materials." Materials Science Forum 675-677 (February 2011): 1077–80. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.1077.

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The band structure and photonic spectrum of one dimensional Thue-Morse quasicrystal composed by negative-index materials and positive-index materials are studied. We show that a new type of the omnidirectional reflection band (ORB) exists in Thue-Morse photonic heterostructures. Compared to a single Thue-Morse quasicrystal, the frequency range of the ORB in a Thue-Morse photonic heterostructure can be notably enlarged, and the width and location of the ORB do not change with Thue-Morse order. The lower edge of the ORB depends only on transverse electric (TE) polarization, while the higher edge of the ORB depends only on transversemagnetic (TM) polarization. These results imply potential applications in improving planar microcavities, optical fibers, and Fabry–Perot resonators, etc.
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Zheng, Linfu, Wen Wang, Dazhou Li, Junguo Chen, Longping Chen, Rong Wang, Chuanshen Jiang, et al. "Orthodontic Rubber Band-Assisted Endoscopic Submucosal Dissection: An Efficient Method for Treating Superficial Colorectal Tumors." Gastroenterology Research and Practice 2022 (January 30, 2022): 1–7. http://dx.doi.org/10.1155/2022/2835258.

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Background. Colorectal endoscopic submucosal dissection (ESD) is a complex operation. Effective traction is crucial. We have successfully used an orthodontic rubber band (ORB) combined with the clip traction method to assist ESD (ORB-ESD). The aim of this retrospective study is to describe the method and to compare the efficacy and safety of ORB-ESD versus conventional ESD in the treatment of superficial colorectal tumors. Methods. We retrospectively analyzed the data of patients with superficial colorectal tumor (with diameter ≥ 20 mm ) who received either ORB-ESD ( n = 34 ) or conventional ESD ( n = 90 ) between January 2019 and September 2020. Propensity score matching (PSM) was used to match the clinical data of 31 pairs of patients in each group. Results. Operation time was significantly shorter for ORB-ESD than for conventional ESD (34.5 minutes vs. 56 minutes, P ≤ 0.001 ). In the propensity-matched cohorts, the operation time remained significantly shorter in the ORB-ESD patients (35 minutes vs. 50 minutes, P = 0.001 ). Postoperative adverse events, en bloc resection rate, and R0 resection rate were comparable between the two groups ( P > 0.05 ), both before and after propensity score matching. In the ORB subgroup analysis, the trainee and expert ESD operation times were similar (37 (26–53) vs. 33.5 (26–37) minutes, respectively; P = 0.274 ). Conclusion. ORB-ESD appears to be an effective technique for ESD of colorectal cancer. Our findings need to be confirmed in large prospective multicenter studies.
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Lantz, V., L. Ambrosio, and P. Schedl. "The Drosophila orb gene is predicted to encode sex-specific germline RNA-binding proteins and has localized transcripts in ovaries and early embryos." Development 115, no. 1 (May 1, 1992): 75–88. http://dx.doi.org/10.1242/dev.115.1.75.

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We report the identification of a new gene, orb, which appears to be expressed only in the germline and encodes ovarian- and testis-specific transcripts. The predicted proteins contain two regions with similarity to the RRM family of RNA-binding proteins but differ at their amino termini. In testes, orb RNA accumulates in the primary spermatocytes and at the caudal ends of the spermatid bundles. In ovaries, orb transcripts display an unusual spatial pattern of accumulation in the oocyte. Preferential accumulation in the oocyte of orb RNA is first detected in region 2 of the germarium and is dependent on Bicaudal-D and egalitarian. While in stage 7 egg chambers orb RNA is localized posteriorly in the oocyte, during stages 8–10 it is localized at the anterior of the oocyte, asymmetrically along the dorsal-ventral axis. In embryos the transcripts accumulate at the posterior end and are included in the pole cells. This pattern of localization and the similarity to RNA-binding proteins suggest that the orb gene product may mediate the localization of maternal RNAs during oogenesis and early embryogenesis.
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Dimitrov, Dimitar, Lara Lopardo, Gonzalo Giribet, Miquel A. Arnedo, Fernando Álvarez-Padilla, and Gustavo Hormiga. "Tangled in a sparse spider web: single origin of orb weavers and their spinning work unravelled by denser taxonomic sampling." Proceedings of the Royal Society B: Biological Sciences 279, no. 1732 (November 2, 2011): 1341–50. http://dx.doi.org/10.1098/rspb.2011.2011.

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In order to study the tempo and the mode of spider orb web evolution and diversification, we conducted a phylogenetic analysis using six genetic markers along with a comprehensive taxon sample. The present analyses are the first to recover the monophyly of orb-weaving spiders based solely on DNA sequence data and an extensive taxon sample. We present the first dated orb weaver phylogeny. Our results suggest that orb weavers appeared by the Middle Triassic and underwent a rapid diversification during the end of the Triassic and Early Jurassic. By the second half of the Jurassic, most of the extant orb-weaving families and web designs were already present. The processes that may have given origin to this diversification of lineages and web architectures are discussed. A combination of biotic factors, such as key innovations in web design and silk composition, as well as abiotic environmental changes, may have played important roles in the diversification of orb weavers. Our analyses also show that increased taxon sampling density in both ingroups and outgroups greatly improves phylogenetic accuracy even when extensive data are missing. This effect is particularly important when addition of character data improves gene overlap.
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Dzhafer, Nigyar, Tzekomir Vodenicharov, and Janis Papathanasiou. "Does the Bulgarian Health Care System Need a Health Ombudsman?" Folia Medica 62, no. 2 (June 30, 2020): 391–97. http://dx.doi.org/10.3897/folmed.62.e47655.

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Background: The Office of the Ombudsman of the Republic of Bulgaria (ORB) is an independent constitutional body elected by Bul&shy;garian Parliament in 2005. It serves to protect the rights of all citizens, including the rights of patients, children, people with disabilities, minorities, foreigners, etc. Bulgarian healthcare users complain when they feel that the healthcare system (HCS) has failed their needs or they have been recipients of an inappropriate treatment. Aim: The aim of the present study was to analyze the structure and dynamics of all complaints from Bulgarian healthcare users referred to the ORB over a 13-year period (2005 &ndash; 2018). Materials and methods: Retrospective documental research was used in the present study. The data included the complaints ob&shy;tained from the official annual reports of the ORB that are available online. Bibliographic and documental searches were also used as sources. The complaints were analyzed by their annual distribution and classified by problem areas in the HCS. Results: Between 2005 and 2018, there were a total of 3288 complaints filed to ORB against HCS. In 2015, 368 complaints were re&shy;ceived by ORB from Bulgarian healthcare users and from various patient organizations concerning problems in the HCS. The filed complaints to ORB increased by 82% in 2016 (n=421). In 2017, the overall number of ORB-referred complaints amounted to 494, and in 2018 their number was as high as 607, which represents an increase by 23% compared to the number of complaints in 2017. Conclusion: The great number of complaints referred to ORB about the HCS over the last four years strongly suggests that the institu&shy;tion of the Ombudsman in Bulgaria enjoys high confidence among Bulgarian healthcare users.
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Shah, Kieran, Gregory Egan, Lawrence (Nichoe) Huan, Jamie Kirkham, Emma Reid, and Aaron M. Tejani. "Outcome reporting bias in Cochrane systematic reviews: a cross-sectional analysis." BMJ Open 10, no. 3 (March 2020): e032497. http://dx.doi.org/10.1136/bmjopen-2019-032497.

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BackgroundDiscrepancies in outcome reporting (DOR) between protocol and published studies include inclusions of new outcomes, omission of prespecified outcomes, upgrade and downgrade of secondary and primary outcomes, and changes in definitions of prespecified outcomes. DOR can result in outcome reporting bias (ORB) when changes in outcomes occur after knowledge of results. This has potential to overestimate treatment effects and underestimate harms. This can also occur at the level of systematic reviews when changes in outcomes occur after knowledge of results of included studies. The prevalence of DOR and ORB in systematic reviews is unknown in systematic reviews published post-2007.ObjectiveTo estimate the prevalence of DOR and risk of ORB in all Cochrane reviews between the years 2007 and 2014.MethodsA stratified random sampling approach was applied to collect a representative sample of Cochrane systematic reviews from each Cochrane review group. DOR was assessed by matching outcomes in each systematic review with their respective protocol. When DOR occurred, reviews were further assessed if there was a risk of ORB (unclear, low or high risk). We classified DOR as a high risk for ORB if the discrepancy occurred after knowledge of results in the systematic review.Results150 of 350 (43%) review and protocol pairings contained DOR. When reviews were further scrutinised, 23% (35 of 150) of reviews with DOR contained a high risk of ORB, with changes being made after knowledge of results from individual trials.ConclusionsIn our study, we identified just under a half of Cochrane reviews with at least one DOR. Of these, a fifth were at high risk of ORB. The presence of DOR and ORB in Cochrane reviews is of great concern; however, a solution is relatively simple. Authors are encouraged to be transparent where outcomes change and to describe the legitimacy of changing outcomes in order to prevent suspicion of bias.
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Dmitriev, Alexei V. "On the radiation belt location during the 23rd and 24th solar cycles." Annales Geophysicae 37, no. 4 (August 13, 2019): 719–32. http://dx.doi.org/10.5194/angeo-37-719-2019.

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Abstract. Within the last two solar cycles (from 2001 to 2018), the location of the outer radiation belt (ORB) was determined using NOAA/Polar-orbiting Operational Environmental Satellite (POES) observations of energetic electrons with energies above 30 keV. It was found that the ORB was shifted a little (∼1∘) in the European and North American sectors, while in the Siberian sector the ORB was displaced equatorward by more than 3∘. The displacements corresponded qualitatively to the change in the geomagnetic field predicted by the IGRF-12 model. However, in the Siberian sector, the model has a tendency to underestimate the equatorward shift of the ORB. The shift became prominent after 2012, which might have been related to a geomagnetic “jerk” that occurred in 2012–2013. The displacement of the ORB to lower latitudes in the Siberian sector can contribute to an increase in the occurrence rate of midlatitude auroras observed in the Eastern Hemisphere.
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Zschokke, Samuel, and Kensuke Nakata. "Vertical asymmetries in orb webs." Biological Journal of the Linnean Society 114, no. 3 (January 14, 2015): 659–72. http://dx.doi.org/10.1111/bij.12456.

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Noest, André J., and Martin Kemp. "No refraction in Leonardo's orb." Nature 480, no. 7378 (December 2011): 457. http://dx.doi.org/10.1038/480457a.

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Liang, Marco (Zhanhang), Shuang Zhao, and Michael T. Goodrich. "Inverse-Rendering-Based Analysis of the Fine Illumination Effects in Salvator Mundi." Leonardo 53, no. 4 (July 2020): 380–86. http://dx.doi.org/10.1162/leon_a_01923.

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The painting Salvator Mundi is attributed to Leonardo da Vinci and depicts Jesus holding a transparent orb. The authors study the optical accuracy of the fine illumination effects in this painting using inverse rendering. Their experimental results provide plausible explanations for the strange glow inside the orb, the anomalies on the orb and the mysterious three white spots, supporting the optical accuracy of the orb's rendering down to its fine-grain details.
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Yuan, Jing, Shuhao Zhu, Kaitao Tang, and Qinxuan Sun. "ORB-TEDM: An RGB-D SLAM Approach Fusing ORB Triangulation Estimates and Depth Measurements." IEEE Transactions on Instrumentation and Measurement 71 (2022): 1–15. http://dx.doi.org/10.1109/tim.2022.3154800.

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Zarezadeh, Ali Akbar, and Christophe Bobda. "Hardware Middleware for Person Tracking on Embedded Distributed Smart Cameras." International Journal of Reconfigurable Computing 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/615824.

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Tracking individuals is a prominent application in such domains like surveillance or smart environments. This paper provides a development of a multiple camera setup with jointed view that observes moving persons in a site. It focuses on a geometry-based approach to establish correspondence among different views. The expensive computational parts of the tracker are hardware accelerated via a novel system-on-chip (SoC) design. In conjunction with this vision application, a hardware object request broker (ORB) middleware is presented as the underlying communication system. The hardware ORB provides a hardware/software architecture to achieve real-time intercommunication among multiple smart cameras. Via a probing mechanism, a performance analysis is performed to measure network latencies, that is, time traversing the TCP/IP stack, in both software and hardware ORB approaches on the same smart camera platform. The empirical results show that using the proposed hardware ORB as client and server in separate smart camera nodes will considerably reduce the network latency up to 100 times compared to the software ORB.
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CABRER, LEONARDO MANUEL, and DANIELE MUNDICI. "Classifying orbits of the affine group over the integers." Ergodic Theory and Dynamical Systems 37, no. 2 (July 22, 2015): 440–53. http://dx.doi.org/10.1017/etds.2015.45.

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For each $n=1,2,\ldots ,$ let $\text{GL}(n,\mathbb{Z})\ltimes \mathbb{Z}^{n}$ be the affine group over the integers. For every point $x=(x_{1},\ldots ,x_{n})\in \mathbb{R}^{n}$ let $\text{orb}(x)=\{\unicode[STIX]{x1D6FE}(x)\in \mathbb{R}^{n}\mid \unicode[STIX]{x1D6FE}\in \text{GL}(n,\mathbb{Z})\ltimes \mathbb{Z}^{n}\}.$ Let $G_{x}$ be the subgroup of the additive group $\mathbb{R}$ generated by $x_{1},\ldots ,x_{n},1$. If $\text{rank}(G_{x})\neq n$ then $\text{orb}(x)=\{y\in \mathbb{R}^{n}\mid G_{y}=G_{x}\}$. Thus, $G_{x}$ is a complete classifier of $\text{orb}(x)$. By contrast, if $\text{rank}(G_{x})=n$, knowledge of $G_{x}$ alone is not sufficient in general to uniquely recover $\text{orb}(x)$; as a matter of fact, $G_{x}$ determines precisely $\max (1,\unicode[STIX]{x1D719}(d)/2)$ different orbits, where $d$ is the denominator of the smallest positive non-zero rational in $G_{x}$ and $\unicode[STIX]{x1D719}$ is the Euler function. To get a complete classification, rational polyhedral geometry provides an integer $1\leq c_{x}\leq \max (1,d/2)$ such that $\text{orb}(y)=\text{orb}(x)$ if and only if $(G_{x},c_{x})=(G_{y},c_{y})$. Applications are given to lattice-ordered abelian groups with strong unit and to AF $C^{\ast }$-algebras.
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Kozyra, Katarzyna A., Marek Józefowicz, Janina R. Heldt, and Józef Heldt. "Electronic Excitation Energy Ttransfer of Prodan-ORB and Laurdan-ORB Systems in Model Phospholipid Membranes." Zeitschrift für Naturforschung A 63, no. 12 (December 1, 2008): 819–29. http://dx.doi.org/10.1515/zna-2008-1210.

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Electronic energy transfer between prodan (6-propionyl-2-dimethylaminonaphthalene) and laurdan (6-dodecanoyl-2-dimethylaminonaphthalene) acting as donors and ORB (octadecyl rhodamine B) acting as acceptor in a model system of membranes has been studied by a steady-state fluorescence quenching analysis. Factors determining the energy transfer rate were considered with special attention to the contribution from the spectral heterogeneity of the donor molecules. By analyzing experimental data within the framework of two theoretical models (developed by Stern, Volmer, and Lehrer) of the energy transfer in two-dimensional systems, the limits of the range of possible prodan and laurdan positions with respect to a lipid bilayer have been estimated.
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CODDINGTON, JONATHAN A. "ORB WEBS IN “NON-ORB WEAVING” OGRE-FACED SPIDERS (ARANEAE: DINOPIDAE): A QUESTION OF GENEALOGY." Cladistics 2, no. 1 (December 1986): 53–67. http://dx.doi.org/10.1111/j.1096-0031.1986.tb00442.x.

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Mansfield, Jennifer H., James E. Wilhelm, and Tulle Hazelrigg. "Ypsilon Schachtel, aDrosophilaY-box protein, acts antagonistically to Orb in theoskarmRNA localization and translation pathway." Development 129, no. 1 (January 1, 2002): 197–209. http://dx.doi.org/10.1242/dev.129.1.197.

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Subcellular localization of mRNAs within the Drosophila oocyte is an essential step in body patterning. Yps, a Drosophila Y-box protein, is a component of an ovarian ribonucleoprotein complex that also contains Exu, a protein that plays an essential role in mRNA localization. Y-box proteins are known translational regulators, suggesting that this complex might regulate translation as well as mRNA localization. Here we examine the role of the yps gene in these events. We show that yps interacts genetically with orb, a positive regulator of oskar mRNA localization and translation. The nature of the genetic interaction indicates that yps acts antagonistically to orb. We demonstrate that Orb protein is physically associated with both the Yps and Exu proteins, and that this interaction is mediated by RNA. We propose a model wherein Yps and Orb bind competitively to oskar mRNA with opposite effects on translation and RNA localization.
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35

Krsticevic, Miso, Dragica Saric, Frano Saric, Ema Slapnicar, Krste Boric, Svjetlana Dosenovic, Antonia Jelicic Kadic, Milka Jeric Kegalj, and Livia Puljak. "Selective reporting bias due to discrepancies between registered and published outcomes in osteoarthritis trials." Journal of Comparative Effectiveness Research 8, no. 15 (November 2019): 1265–73. http://dx.doi.org/10.2217/cer-2019-0068.

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Aim: Outcome reporting bias (ORB) occurs when outcomes planned in a study protocol are subsequently not reported or are partially reported. Our aim was to analyze ORB in randomized controlled trials (RCTs) about conservative interventions for osteoarthritis (OA) by comparing registered protocols and published manuscripts, as well as association between study funding type and intervention type, and ORB in those RCTs. Materials & methods: We analyzed RCTs that were published in a peer-review journal and analyzed any type of conservative intervention for treatment of OA in humans that reported in the manuscript registration in a public clinical trial registry and provided unique registration identifier. We extracted data indicating ORB by comparing outcomes in protocol and published article, and characteristics of trials. Results: In 190 (57%) of 334 included RCTs, it was indicated in the manuscript that a trial was registered. In 48% of trials we found discrepancies in number, type or time point of primary efficacy outcome between protocol and manuscript. Significantly less discrepancies in primary efficacy outcomes between protocols and published articles were found in trials funded by a commercial sponsor (p = 0.0062) and trials of pharmacological interventions (p = 0.0016). Conclusion: Trials about conservative therapies for OA have high prevalence of discrepancies between protocol and publication, and frequent ORB. This may mislead readers of published results because it has been shown that ORB can lead to both overestimation and underestimation of effects of interventions, depending on the intervention and outcome. Efforts to prevent nonregistration of protocols and selective reporting are needed.
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36

Boyu, Kuang, Chen Yuheng, and Rana Zeeshan A. "OG-SLAM: A real-time and high-accurate monocular visual SLAM framework." Trends in Computer Science and Information Technology 7, no. 2 (July 26, 2022): 047–54. http://dx.doi.org/10.17352/tcsit.000050.

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The challenge of improving the accuracy of monocular Simultaneous Localization and Mapping (SLAM) is considered, which widely appears in computer vision, autonomous robotics, and remote sensing. A new framework (ORB-GMS-SLAM (or OG-SLAM)) is proposed, which introduces the region-based motion smoothness into a typical Visual SLAM (V-SLAM) system. The region-based motion smoothness is implemented by integrating the Oriented Fast and Rotated Brief (ORB) features and the Grid-based Motion Statistics (GMS) algorithm into the feature matching process. The OG-SLAM significantly reduces the absolute trajectory error (ATE) on the key-frame trajectory estimation without compromising the real-time performance. This study compares the proposed OG-SLAM to an advanced V-SLAM system (ORB-SLAM2). The results indicate the highest accuracy improvement of almost 75% on a typical RGB-D SLAM benchmark. Compared with other ORB-SLAM2 settings (1800 key points), the OG-SLAM improves the accuracy by around 20% without losing performance in real-time. The OG-SLAM framework has a significant advantage over the ORB-SLAM2 system in that it is more robust for rotation, loop-free, and long ground-truth length scenarios. Furthermore, as far as the authors are aware, this framework is the first attempt to integrate the GMS algorithm into the V-SLAM.
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Wang, Shuhang, Jianfeng Li, Pengshuai Yang, Tianxiao Gao, Alex R. Bowers, and Gang Luo. "Towards Wide Range Tracking of Head Scanning Movement in Driving." International Journal of Pattern Recognition and Artificial Intelligence 34, no. 13 (April 20, 2020): 2050033. http://dx.doi.org/10.1142/s0218001420500330.

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Gaining environmental awareness through lateral head scanning (yaw rotations) is important for driving safety, especially when approaching intersections. Therefore, head scanning movements could be an important behavioral metric for driving safety research and driving risk mitigation systems. Tracking head scanning movements with a single in-car camera is preferred hardware-wise, but it is very challenging to track the head over almost a [Formula: see text] range. In this paper, we investigate two state-of-the-art methods, a multi-loss deep residual learning method with 50 layers (multi-loss ResNet-50) and an ORB feature-based simultaneous localization and mapping method (ORB-SLAM). While deep learning methods have been extensively studied for head pose detection, this is the first study in which SLAM has been employed to innovatively track head scanning over a very wide range. Our laboratory experimental results showed that ORB-SLAM was more accurate than multi-loss ResNet-50, which often failed when many facial features were not in the view. On the contrary, ORB-SLAM was able to continue tracking as it does not rely on particular facial features. Testing with real driving videos demonstrated the feasibility of using ORB-SLAM for tracking large lateral head scans in naturalistic video data.
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38

Kishimoto, Yutaka, and Takashi Ohno. "51V NMR Study of a C15 Laves Phase Compound HfV2." Zeitschrift für Naturforschung A 57, no. 6-7 (July 1, 2002): 513–17. http://dx.doi.org/10.1515/zna-2002-6-741.

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We analyzed the K-x plot in order to investigate the change in the electronic state in the C15 Laves phase compound HfV2 at the lattice transformation temperature TL (~120 K). We could obtain K3d orb X3d orb, and X5d orb + (2/3) XPauli + Xdia, which are consistent with those reported in our previous paper, and discussed the changes in density of states of the V3d and 4s electrons at TL. For the superconducting state we discussed the d wave Anderson-Brinkman-Morel (ABM) type energy gap in which the gap is anisotropic and vanishes at points on the Fermi surface
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Effendy, Machmud, Rosyadi Nur Syahputra, and Khusnul Hidayat. "PERANCANGAN MAXIMUM POWER POINT TRACKING PADA PEMBANGKIT LISTRIK TENAGA BAYU MENGGUNAKAN FOUR SWITCH BUCK BOOST CONVERTER DENGAN METODE P&O-ORB." Transmisi 21, no. 4 (October 29, 2019): 96–102. http://dx.doi.org/10.14710/transmisi.21.4.96-102.

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MPPT (maximum power point tracking) merupakan cara untuk memaksimalkan daya keluaran pada pembangkit listrik tenaga bayu (PLTB). Sistem MPPT pada PLTB terdiri dari DC-DC converter dan metode kontrol. Pada penelitian ini, sistem MPPT menggunakan Four Switch Buck Boost (FSBB) converter, dimana converter ini memiliki polaritas tegangan yang sama antara input dan output, ripple tegangan rendah, dan efisiensi daya lebih besar dibandingkan dengan Buck Boost Converter. Metode kontrol yang digunakan adalah Perturb and Observe (P&O)- ORB (Optimum Relations-Based) yang memiliki tingkat osilasi lebih rendah dan efisiensi lebih tinggi dibandingkan dengan metode P&O.Sistem MPPT disimulasikan menggunakan software PSIM untuk mengetahui performa P&O-ORB dan FSBB converter. Evaluasi kinerja P&O-ORB dan FSBB diuji dalam kondisi kecepatan angin 5 m/s. Hasil simulasi menunjukkan FSBB memiliki tingkat kesalahan yang lebih kecil daripada Buck Boost yaitu 0,02%. Dan sistem MPPT dengan metode P&O-ORB memiliki tingkat efisiensi yang tinggi mencapai 98,01 %.
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40

Hesselberg, Thomas, Daniel Simonsen, and Carlos Juan. "Do cave orb spiders show unique behavioural adaptations to subterranean life? A review of the evidence." Behaviour 156, no. 10 (2019): 969–96. http://dx.doi.org/10.1163/1568539x-00003564.

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Abstract Interest for subterranean biology has risen sharply in recent years due to the simplicity of the cave environment. However, most studies have focussed on morphology with few studies looking at behaviour. The cave orb spiders show some unique behavioural adaptations compared to other orb spiders, including rudimentary orb webs, off-web foraging and a complex life cycle with a surface phase. Here, we compare these behavioural adaptations in the European Meta menardi and Meta bourneti to similar behaviours in surface-dwelling orb spiders. We find that current data suggest (1) an extreme reduction in the number of frame threads, (2) evidence of capturing non-flying prey, but not necessarily evidence for off-web foraging and (3) dispersal through a surface-dwelling life stage, but with data lacking on the role of ballooning and their return to caves. We conclude that Meta spiders have potential as model organisms for studies on behavioural adaptations and flexibility.
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Lantz, V., and P. Schedl. "Multiple cis-acting targeting sequences are required for orb mRNA localization during Drosophila oogenesis." Molecular and Cellular Biology 14, no. 4 (April 1994): 2235–42. http://dx.doi.org/10.1128/mcb.14.4.2235-2242.1994.

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The targeting of positional information to specific regions of the oocyte or early embryo is one of the key processes in establishing anterior-posterior and dorsal-ventral polarity. In many developmental systems, this is accomplished by localization of mRNAs. The germ line-specific Drosophila orb gene plays a critical role in defining both axes of the developing oocyte, and its mRNA is localized in a complex pattern during oogenesis. We have identified a 280-bp sequence from the orb 3' untranslated region capable of reproducing this complex localization pattern. Furthermore, we have found that multiple cis-acting elements appear to be required for proper targeting of orb mRNA.
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Lantz, V., and P. Schedl. "Multiple cis-acting targeting sequences are required for orb mRNA localization during Drosophila oogenesis." Molecular and Cellular Biology 14, no. 4 (April 1994): 2235–42. http://dx.doi.org/10.1128/mcb.14.4.2235.

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The targeting of positional information to specific regions of the oocyte or early embryo is one of the key processes in establishing anterior-posterior and dorsal-ventral polarity. In many developmental systems, this is accomplished by localization of mRNAs. The germ line-specific Drosophila orb gene plays a critical role in defining both axes of the developing oocyte, and its mRNA is localized in a complex pattern during oogenesis. We have identified a 280-bp sequence from the orb 3' untranslated region capable of reproducing this complex localization pattern. Furthermore, we have found that multiple cis-acting elements appear to be required for proper targeting of orb mRNA.
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43

Lin, Yi-Qing, Hao-Yan Chen, Wei-Min Gu, and Tuan Yi. "Effects of Gravitational-wave Radiation of Eccentric Neutron Star–White Dwarf Binaries on the Periodic Activity of Fast Radio Burst Sources." Astrophysical Journal 929, no. 2 (April 1, 2022): 114. http://dx.doi.org/10.3847/1538-4357/ac5c49.

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Abstract We revisit the eccentric neutron star (NS)–white dwarf (WD) binary model for the periodic activity of fast radio burst (FRB) sources, by including the effects of gravitational-wave (GW) radiation. In this model, the WD fills its Roche lobe at the periastron and mass transfer occurs from the WD to the NS. The accreted materials can be fragmented and arrive at the NS episodically, resulting in multiple bursts through curvature radiation. Consequently, the WD may be kicked away owing to the conservation of angular momentum. To initiate the next mass transfer, the WD has to refill its Roche lobe through GW radiation. In this scenario, whether the periodic activity can show up relies on three timescales, i.e., the orbital period P orb, the timescale T GW for the Roche lobe to be refilled, and the time span T frag for all the episodic events corresponding to each mass-transfer process. Only when the two conditions T GW ≲ P orb and T frag < P orb are both satisfied, the periodic activity will manifest itself and the period should be equal to P orb. In this spirit, the periodic activity is more likely to show up for relatively long periods (P orb ≳ several days). Thus, it is reasonable that FRBs 180916 and 121102, the only two sources having been claimed to manifest periodic activity, both correspond to relatively long periods.
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Xie, Yinggang, Quan Wang, Yuanxiong Chang, and Xueyuan Zhang. "Fast Target Recognition Based on Improved ORB Feature." Applied Sciences 12, no. 2 (January 13, 2022): 786. http://dx.doi.org/10.3390/app12020786.

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A novel fast target recognition algorithm is proposed under the dynamic scene moving target recognition. Aiming at the poor matching effect of the traditional Oriented Fast and Rotated Brief (ORB) algorithm on underexposed or overexposed images caused by illumination, the idea of combining adaptive histogram equalization with the ORB algorithm is proposed to get better feature point quality and matching efficiency. First, the template image and each frame of the video stream are processed by grayscale. Second, the template image and the image to be input in the video stream are processed by adaptive histogram equalization. Third, the feature point descriptors of the ORB feature are quantized by the Hamming distance. Finally, the K-nearest-neighbor (KNN) matching algorithm is used to match and screen feature points. According to the matching good feature point logarithm, a reasonable threshold is established and the target is classified. The comparison and verification are carried out by experiments. Experimental results show that the algorithm not only maintains the superiority of ORB itself but also significantly improves the performance of ORB under the conditions of underexposure or overexposure. The matching effect of the image is robust to illumination, and the target to be detected can be accurately identified in real time. The target can be accurately classified in the small sample scene, which can meet the actual production requirements.
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Matlák, Zsuzsanna, and Tamás Barbarics. "Magnetic levitation of a metal orb." International Journal of Applied Electromagnetics and Mechanics 13, no. 1-4 (December 17, 2002): 299–306. http://dx.doi.org/10.3233/jae-2002-336.

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Fu, Qiang, Hongshan Yu, Xiaolong Wang, Zhengeng Yang, Yong He, Hong Zhang, and Ajmal Mian. "Fast ORB-SLAM Without Keypoint Descriptors." IEEE Transactions on Image Processing 31 (2022): 1433–46. http://dx.doi.org/10.1109/tip.2021.3136710.

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Zhang, Shu, and Lei Meng. "Research of Alloy Orb on Wavelet." Advanced Materials Research 503-504 (April 2012): 525–28. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.525.

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via completely after heat-treatment, [111] orientation of single crystal alloy structure is still cubic  phase at way coherency are ordered in matrix g panel and the direction rules arrangement; In high temperature and tensile stress creep period, with stress axes ordered  has formed certain Angle raft shape organization, creep later in nearly fracture zone, raft shape  ordered caring and distortion in happen, with strain increases, coarsening and distorted aggravating, until the present wavy shape; During the creep [111] orientation of single crystal alloys deformation characteristics is a wrong in  matrix channel to sports and shear raft shape  phase, due to form larger, more variable dislocation cut ordered after raft shape , occurred in dislocation bunch of sets and its formation and crystal structure; Among them, the matrix channel to inherit the maximum shear dislocation slip is made of alloy with larger strain rate main reason.
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Geng, Chuanping, Junjie Yang, Jinchen Lin, Ting Yu, and Kexin Shi. "An Improved ORB Feature Extraction Algorithm." Journal of Physics: Conference Series 1616 (August 2020): 012026. http://dx.doi.org/10.1088/1742-6596/1616/1/012026.

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49

Anotaux, M., J. Marchal, N. Châline, L. Desquilbet, R. Leborgne, C. Gilbert, and A. Pasquet. "Ageing alters spider orb-web construction." Animal Behaviour 84, no. 5 (November 2012): 1113–21. http://dx.doi.org/10.1016/j.anbehav.2012.08.017.

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Gupta, Agrima, and Rashleen Kour. "Fake Currency Detection Using ORB Algorithm." International Journal for Research in Applied Science and Engineering Technology 10, no. 11 (November 30, 2022): 1813–17. http://dx.doi.org/10.22214/ijraset.2022.47726.

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Abstract: This paper presents the technique to detect fake currency using the technique of image processing. Fake currency is produced and circulated in the market by antisocial people or group of people in the society. Fake currency affects the economic status of the country and also brings disturbance in the economic development. Various methods of image processing techniques that can be used to process and detect fake currency are- image segmentation, image acquisition, edge detection, grey scale conversion, feature extraction and feature matching. The system presented in the paper deals with feature extraction and feature matching method of image processing in python language. Result will be displayed in terms of accuracy value depicting whether the currency note is original or fake.
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