ahmedabdelwahed/Medical_papers_title_and_abstract_NLP_dataset huggingface dataset:
Shape geodesics for robust sign language recognition

In this study, a novel method of pattern recognition for static gesture recognition is proposed. To deal with this application, the authors should tackle the problem of low variability among shape classes in the gestures databases. The authors' method is based on robust registration and shape geodesics in shape space with a preliminary step of pose estimation accelerating the processing time. The different gestures are considered individual points in a non-linear shape space. Similarity between any two considered shapes can be measured by a distance metric on the shape space. For shape comparison, three distances with and without robust norm are proposed and evaluated for the target application. To cope with low shape variability among classes, the best scheme is to use robust norm in shape matching but not in shape comparison. Experiments are conducted on reference databases used in the literature to evaluate static gesture recognition. These experiments show the outperformance of the proposed scheme compared to state-of-the art methods.
The State of the Art of Microwave CAD: EM-Based Optimization and Modeling

We briefly review the current state of the art of microwave CAD technologies. We look into the history of design optimization and CAD-oriented modeling of microwave circuits as well as electromagnetics-based optimization techniques. We emphasize certain direct approaches that utilize efficient sensitivity evaluations as well as surrogate-based optimization approaches that greatly enhance electromagnetics-based optimization performance. On the one hand, we review recent ad joint methodologies, on the other we focus on space mapping implementations, including the original, aggressive, implicit, output, tuning, and related developments. We illustrate our presentation with suitable examples and applications. (C) 2010 Wiley Periodicals. Inc Int J RF and Microwave CAE 20475-491, 2010
Hunting scenes in Spanish Levantine rock art: An unequivocal chrono-cultural marker of Epipalaeolithic and Mesolithic Iberian societies?

In the framework of the long-standing debate regarding the chronology of Spanish Levantine rock art, the hypotheses proposing its cultural affiliation to the Epipalaeolithic and Mesolithic societies are largely based on the socio-economic activities depicted in the Levantine scenes, in particular hunting. This position is closely related to the belief that there is a radical opposition between hunter-gatherers and agropastoralist - wild vs. domestic - where hunting is not envisaged to have neither a complementary economic purpose nor a significant social and symbolic role during the settlement and expansion of the "Neolithic package". In order to assess the validity of Levantine hunting scenes as a chrono-cultural marker of Epipalaeolithic-Mesolithic societies, this paper explores the role of hunting in Neolithic societies of the Iberian Mediterranean Basin (6th-3rd millennium cal BC). To do this, economic data, from archae-ozoological and isotopic studies permitting the evaluation of wild and domestic animals consumption patterns, along with other social, identity-related and symbolic elements, such as the funerary record, personal ornaments and Levantine iconography itself, will be taking into account. (C) 2018 Elsevier Ltd and INQUA. All rights reserved.
Fiber-Wireless (FiWi) Access Networks: Challenges and Opportunities

Hybrid fiber-wireless (FiWi) access networks aim at combining the huge amount of available bandwidth of optical networks and the ubiquity and mobility of wireless access networks with the objective to reduce their cost and complexity. This article highlights key enabling optical as well as wireless technologies and explains their role in emerging FiWi networks. After briefly reviewing previous art, important challenges and imperatives for the design of future FiWi network architectures, protocols, and algorithms are identified and discussed in detail.
Dyadic response facilitation of object play in Balinese long-tailed macaques

Social influence is at the core of the emergence and maintenance of behavioral traditions in various animal taxa. Response facilitation is a mechanism of social influence whereby observing a demonstrator performing a behavior temporarily increases the probability that the observer will perform the same behavior. We focused on stone handling (SH) behavior, a form of object-directed play routinely displayed by free-ranging long-tailed macaques (Macaca fascicularis) in Ubud, Bali, Indonesia. We tested whether the expression of SH was subject to dyadic response facilitation. We compared video-recorded focal samples of an individual immediately after they had witnessed a SH bout performed by a conspecific, and matched-control focal samples of the same witness in the absence of any surrounding SH bouts. We found converging evidence that SH was facilitated within pairs of individuals. First, SH occurred significantly more often and lasted significantly longer in the post-witnessing condition than in the matched-control condition. Second, a monkey initiated SH more rapidly in the former than in the latter, and this significant facilitation effect mainly occurred during the first two minutes after witnessing SH. By demonstrating that the expression of SH was socially mediated, we provided further support for the cultural nature of this behavior.
An endoplasmic reticulum-targeting fluorescent probe for the visualization of the viscosity fluctuations during ferroptosis in live cells

Ferroptosis is an unique iron-dependent cell death form and currently has been shown to closely relate with ER. Revealing the viscosity fluctuations of ER during ferroptosis is of great significance not only to monitor the occurrence and development of iron poisoning, but also to deeply understand the biological effects of ER in ferroptosis. Herein, we present an ER-targeting fluorescent probe (PV1) to detect viscosity changes of ER during ferroptosis. PV1 utilized a rotatable C-C bond to connect the two rigid π-systems, and responded viscosity by the regulation of the coplanarity of these two planes. PV1 displayed desirable sensitivity and selectivity to viscosity. The biological imaging results suggested that PV1 mainly distributed at ER in live cells, and the viscosity of ER exhibited an evident increase in the process of erastin-induced ferroptosis. After the simultaneous incubation of cells with erastin and Fer-1 or VE, the viscosity of ER showed no marked change, and it suggested that the erastin-induced ferroptosis could be inhibited by Fer-1 and VE. We expect that the developed probe could provide a feasible and rapid method for the in-depth study of the ferroptosis-based disease treatment and drug design.
Developmental and mechanical roles of Reichert's membrane in mouse embryos

Embryonic development and growth in placental mammals proceeds in utero with the support of exchanges of gases, nutrients and waste products between maternal tissues and offspring. Murine embryos are surrounded by several extraembryonic membranes, parietal and visceral yolk sacs, and amnion in the uterus. Notably, the parietal yolk sac is the most outer membrane, consists of three layers, trophoblasts and parietal endoderm (PaE) cells, and is separated by a thick basal lamina termed Reichert's membrane (RM). RM is composed of extracellular matrix (ECM) initially formed as the basement membrane of the trophectoderm of pre-implanted embryos and followed by the heavy deposition of ECM mainly produced in PaE cells of post-implanted embryos. In addition to the physiological roles of RM, such as gas and nutrient exchange, it also plays a crucial role in cushioning and dispersing intrauterine pressures exerted on embryos for normal egg-cylinder morphogenesis. Mechanistically, such intrauterine pressures generated by uterine smooth muscle contractions appear to be involved in the elongation of the egg-cylinder shape, along with primary axis formation, as an important biomechanical element in utero. This review focuses on our current views of the roles of RM in properly buffering intrauterine mechanical forces for mouse egg-cylinder morphogenesis. This article is part of the theme issue 'Extraembryonic tissues: exploring concepts, definitions and functions across the animal kingdom'.
The influence of self-relevant materials on working memory in dysphoric undergraduates

Difficulties in updating working memory (WM) may underlie problems with regulating emotions that contribute to depression. To examine the ability of updating affective materials in WM, 33 dysphoric and 34 non-dysphoric participants were asked to evaluate the self-descriptiveness of emotional adjectives and provide answers to self-relevant questions. Within 3-7 days, they completed a two-back task with a series of self-irrelevant or self-relevant emotional words (they had generated previously) and four conditions (match-set, break-set, perseveration-set, and no-set). After the WM task, an unexpected recall task was administered; controls recalled more positive self-relevant words and intrusions while dysphoric participants recalled more negative self-relevant words and intrusions. In break-set trials of the two-back task, dysphoric individuals showed slower response to self-relevant words regardless of valence. In the match-set and perseveration-set trials, dysphoric participants showed delayed response to self-related negative words. Moreover, longer reaction times for self-relevant negative words were correlated with higher rumination and worse depression. The results suggest that dysphoric undergraduates are interfered more by and have a better memory of self-relevant negative stimuli in WM, which is closely correlated with rumination. This study is among the first to confirm the potential mechanism that could underwrite the involvement of self-schema in effectively regulating negative affect.
Heteropentanuclear Oxalato-Bridged nd-4f (n=4, 5) Metal Complexes with NO Ligand: Synthesis, Crystal Structures, Aqueous Stability and Antiproliferative Activity

A series of heteropentanuclear oxalate-bridged Ru(NO)-Ln (4d-4f) metal complexes of the general formula (nBu4N)5[Ln{RuCl3(μ-ox)(NO)}4], where Ln=Y (2), Gd (3), Tb (4), Dy (5) and ox=oxalate anion, were obtained by treatment of (nBu4N)2[RuCl3(ox)(NO)] (1) with the respective lanthanide salt in 4:1 molar ratio. The compounds were characterized by elemental analysis, IR spectroscopy, electrospray ionization (ESI) mass spectrometry, while 1, 2, and 5 were in addition analyzed by X-ray crystallography, 1 by Ru K-edge XAS and 1 and 2 by (13)C NMR spectroscopy. X-ray diffraction showed that in 2 and 5 four complex anions [RuCl3(ox)(NO)](2-) are coordinated to Y(III) and Dy(III), respectively, with formation of [Ln{RuCl3(μ-ox)(NO)}4](5-) (Ln=Y, Dy). While Y(III) is eight-coordinate in 2, Dy(III) is nine-coordinate in 5, with an additional coordination of an EtOH molecule. The negative charge is counterbalanced by five nBu4N(+) ions present in the crystal structure. The stability of complexes 2 and 5 in aqueous medium was monitored by UV/Vis spectroscopy. The antiproliferative activity of ruthenium-lanthanide complexes 2-5 were assayed in two human cancer cell lines (HeLa and A549) and in a noncancerous cell line (MRC-5) and compared with those obtained for the previously reported Os(NO)-Ln (5d-4f) analogues (nBu4N)5[Ln{OsCl3(ox)(NO)}4] (Ln=Y (6), Gd (7), Tb (8), Dy (9)). Complexes 2-5 were found to be slightly more active than 1 in inhibiting the proliferation of HeLa and A549 cells, and significantly more cytotoxic than 5d-4f metal complexes 6-9 in terms of IC50 values. The highest antiproliferative activity with IC50 values of 20.0 and 22.4 μM was found for 4 in HeLa and A549 cell lines, respectively. These cytotoxicity results are in accord with the presented ICP-MS data, indicating five- to eightfold greater accumulation of ruthenium versus osmium in human A549 cancer cells.
Detection and genetic analysis of Escherichia coli from Tonle Sap Lake and its tributaries in Cambodia: Spatial distribution, seasonal variation, pathogenicity, and antimicrobial resistance

As an indicator of fecal contamination, Escherichia coli was monitored in Tonle Sap Lake, Cambodia, and its tributaries during low- and high-water seasons, focusing on the impacts on floating villagers inhabiting boathouses. E. coli concentrations in the floating villages (3.6 × 103 and 5.7 × 103 CFU/100 mL during the low- and high-water seasons, respectively) were significantly higher than those in other lake sites (4.0 × 101 and 7.0 × 100 CFU/100 mL during the low- and high-water seasons, respectively) and rivers (3.3 × 102 and 8.9 × 102 CFU/100 mL during the low- and high-water seasons, respectively), most likely because fecal materials from the boathouses were discharged without treatment. At most of the lake sampling sites remote from the boathouses, the E. coli concentration was lower during the high-water season than that during the low-water season, due to dilution by lake water. E. coli colonies detected during monitoring were isolated for pathotyping, antimicrobial susceptibility testing, beta-lactamase gene detection, and multilocus sequencing typing (MLST). Of the 659 E. coli isolates, 101 (15.3%) were diarrheagenic E. coli (DEC). The prevalence of DEC (52.2%) in the floating villages during the low-water season was higher than that during the high-water season (4.2%) and that in other sites during both seasons (10.6-21.3%). The DEC isolates from the floating villages during the low-water season showed high antimicrobial resistance, including ampicillin (83.4%) and ciprofloxacin (83.4%), and frequently possessed a beta-lactamase gene (blaTEM) (83.4%). MLST analysis indicated that the predominant sequence type (ST) of DEC isolates from the floating villages possibly originated from humans, whereas more diverse STs were detected in isolates from other sites. We revealed the wide presence of diarrheagenic and antimicrobial-resistant E. coli in Tonle Sap Lake and identified a considerable infection risk in floating villages, especially during the low-water season.
Real-time acoustic monitoring with telemetry to mitigate potential effects of seismic survey sounds on marine mammals: a case study offshore Sakhalin Island

Exxon Neftegas Ltd. (ENL) carried out three 4D seismic surveys during the summer of 2015. Seismic operations in two of these fields (Odoptu and Chayvo) ensonified the nearshore feeding area of Korean-Okhotsk (western) gray whales (Eschrichtius robustus), potentially disturbing feeding activities. Following model-based optimization of the source design to minimize its lateral acoustic footprint, pre-season modeling was used to compute the acoustic exposure along each survey line. Real-time acoustic data facilitated implementation of mitigation measures aimed to minimize disturbance of whales. Acoustic data originated from underwater recorders deployed on the seafloor. Two complementary approaches were used to transmit recorded sound data to a computer housed at the Central Post (CP), where decisions regarding mitigation shut downs were made. In the first approach, a limited bandwidth (2-2000 Hz) sampling of the data was transmitted via cable to a surface buoy, which relayed these data to a shore station up to 15 km away via digital VHF telemetry. At the shore station, acoustic impulses from the seismic surveys were processed to compute impulse characteristics in the form of estimates of sound exposure level and peak sound pressure level, as well as one-minute-average 1/3-octave power spectral density coefficients, which were then transmitted to the CP via the internet. In the second, the pulse characteristics were computed through algorithms running on an onboard processor in each recorder's surface buoy and sent directly to the CP computer via an Iridium satellite uplink. Both methods of data transfer proved viable, but Iridium transmission achieved the goal without the need for any shore based relay stations and is therefore more operationally efficient than VHF transmission. At the CP, analysts used the real-time acoustic data to calibrate and adjust the output of pre-season acoustical model runs. The acoustic footprint for the active seismic source, advancing synchronously with the motion of the seismic vessel and changing as the sound propagation environment changed, was computed from the calibrated and adjusted model output and integrated through the software Pythagoras with locations of gray whales provided by shore-based observers. This enabled analysts to require air gun array shutdowns before whales were exposed to mean square sound pressure levels greater than the behavioral response threshold of 163 dB re 1 μPa2. The method described here provides a realistic means of mitigating the possible effects of air guns at a behavioral response level, whereas most seismic surveys rely on pre-established mitigation radii to manage the risk of injury to a whale.
Development of zinc ferrite nanoparticles with enhanced photocatalytic performance for remediation of environmentally toxic pharmaceutical waste diclofenac sodium from wastewater

Diclofenac sodium is an anti-inflammatory drug commonly used to cure pain in various treatments. The remarkable potential of this pain-killer leads to its excessive use and, therefore, a persistent water contaminant. Its presence in aqueous bodies is hazardous for both humans and the environment because it causes the growth of harmful drug-resistant bacteria in water. Herein, we present a comparative study of the ZnO and ZnFe2O4 as photocatalysts for the degradation of diclofenac sodium, along with their structural and morphological studies. A simple co-precipitation method was used for the synthesis of ZnO and ZnFe2O4 and characterized by various analytical techniques. For instance, the UV-Vis study revealed the absorption maxima of ZnO at 320 nm, which was shifted to a longer wavelength region at 365 nm for zinc ferrite. The optical band gaps obtained from the Tauc plot indicated that the incorporation of iron has led to a decreased band gap of zinc ferrite (2.89 eV) than pure ZnO (3.14 eV). The metal-oxygen linkages shown by FTIR indicated the formation of desired ZnO and ZnFe2O4, which was further confirmed by XRD. It elucidated the typical hexagonal structure for ZnO and spinel cubic structure for ZnFe2O4 with an average crystallite of 31 nm and 44 nm for ZnO and ZnFe2O4, respectively. The micrographs obtained by SEM showed rough spherical particles of ZnO, whereas for ZnFe2O4 flower-like clustered particles were observed. The photocatalytic investigation against diclofenac sodium revealed the higher degradation efficiency of ZnFe2O4 (61.4%) in only 120 min, whereas ZnO degraded only 48.9% of the drug. Moreover, zinc ferrite has shown good recyclability and was stable up to five runs of photodegradation with a small loss (3.9%) of photocatalytic activity. The comparison of two catalysts has suggested the promising role of zinc ferrite in wastewater remediation to eliminate hazardous pharmaceuticals.
Scalable Static Detection of Use-After-Free Vulnerabilities in Binary Code

The number of use-after-free vulnerabilities has been increasing rapidly in recent years, which is a serious threat to computer systems. However, few effective mitigations exist for large-scale binary code. In this study, the authors propose a scalable static approach for detecting use-after-free vulnerabilities in binary code. First, the use-after-free feature model is proposed to provide guidance for detection. Then, the binary code of the target program is converted to an intermediate representation, and CFGs (control flow graphs) are constructed. Finally, lightweight pointer tracking is performed to identify the use-after-free vulnerable point. Compared with state-of-the-art approaches, this approach uses function summaries rather than naive in-lining technique for the inter-procedural analysis in the vulnerability detection. Therefore, our approach has the ability to avoid redundant repeat analysis caused by the in-lining technique in the existing approaches and reduce the unnecessary performance overhead. The authors have implemented a prototype called UAFDetector and evaluated it using standard benchmarks and real-world programs. The experimental results show that this approach is effective in detecting use-after-free vulnerabilities in binary code and is more efficient and scalable than state-of-the-art static solutions.
Real-Time Hierarchical Supervoxel Segmentation via a Minimum Spanning Tree

Supervoxel segmentation algorithm has been applied as a preprocessing step for many vision tasks. However, existing supervoxel segmentation algorithms cannot generate hierarchical supervoxel segmentation well preserving the spatiotemporal boundaries in real time, which prevents the downstream applications from accurate and efficient processing. In this paper, we propose a real-time hierarchical supervoxel segmentation algorithm based on the minimum spanning tree (MST), which achieves state-of-the-art accuracy meanwhile at least 11x faster than existing methods. In particular, we present a dynamic graph updating operation into the iterative construction process of the MST, which can geometrically decrease the numbers of vertices and edges. In this way, the proposed method is able to generate arbitrary scales of supervoxels on the fly. We prove the efficiency of our algorithm that can produce hierarchical supervoxels in the time complexity of O(n), where n denotes the number of voxels in the input video. Quantitative and qualitative evaluations on public benchmarks demonstrate that our proposed algorithm significantly outperforms the state-ofthe-art algorithms in terms of supervoxel segmentation accuracy and computational efficiency. Furthermore, we demonstrate the effectiveness of the proposed method on a downstream application of video object segmentation.
Art Design of Urban Public Space Based on Marine Culture

China's marine cultural industry is the key for the economic growth of coastal cities. The development of urban culture is synchronized with marine culture, and urban culture of coastal cities is more or less mixed, with some marine cultural elements. This study attempts to explore the overall design of public space art in coastal cities from the perspective of marine culture look deeply into the relationship between the artistic design of urban public space and marine culture and urban image building. The research results show that both the urban culture and marine culture have the characteristics of agglomeration, diversity, regionality, and radiation; the design of public art is an important factor in the design of urban image, and the design concepts of public space sculptures in coastal cities are closely related to marine culture; the public art system is a system with a sequence and hierarchical relationship; the design of art forms not only depends on their own artistic value but also echoes the surrounding cultural ideas. This study provides a theoretical basis for the rapid integration of marine and urban cultures.