nils-herrmann/clean_scirepeval huggingface dataset:
Application of Radio Environment Map Reconstruction Techniques to Platoon based Cellular V2X Communications
Venue: Sensors
Year: 2020

Vehicle platoons involve groups of vehicles travelling together at a constant inter vehicle distance, with different common benefits such as increasing road efficiency and fuel saving. Vehicle platooning requires highly reliable wireless communications to keep the group structure and carry out coordinated maneuvers in a safe manner. Focusing on infrastructure assisted cellular vehicle to anything (V2X) communications, the amount of control information to be exchanged between each platoon vehicle and the base station is a critical factor affecting the communication latency. This paper exploits the particular structure and characteristics of platooning to decrease the control information exchange necessary for the channel acquisition stage. More precisely, a scheme based on radio environment map (REM) reconstruction is proposed, where geo localized received power values are available at only a subset of platoon vehicles, while large scale channel parameters estimates for the rest of platoon members are provided through the application of spatial Ordinary Kriging (OK) interpolation. Distinctive features of the vehicle platooning use case are explored, such as the optimal patterns of vehicles within the platoon with available REM values for improving the quality of the reconstruction, the need for an accurate semivariogram modeling in OK, or the communication cost when establishing a centralized or a distributed architecture for achieving REM reconstruction. The evaluation results show that OK is able to reconstruct the REM in the platoon with acceptable mean squared estimation error, while reducing the control information for REM acquisition in up to 64% in the best case scenario.
Dynamic ensemble based feature selection model for credit card fraud detection
Venue: 2020 IEEE 17th India Council International Conference (INDICON)
Year: 2020

Credit card fraud has increased significantly with the increased use of credit cards. So an efficient but robust system is needed to detect credit card fraud. Many machine learning algorithms have been proposed for this purpose. Among them, recently proposed dynamic ensemble classification using soft probability (DECSP) outstood other individuals as well as ensemble classifiers. However, the authors do not focus on feature selection/extraction, which can improve the model to a great extent. Hence, we propose a framework for credit card fraud detection based on DECSP. The framework presented incorporates DECSP with various feature selection/extraction techniques such as Particle Swarm Optimization (PSO) Genetic Algorithm (GA) Principal Component Analysis (PCA) and Recursive Feature Elimination (RFE) We experimented and compared the results generated based on accuracy, precision, f1 score, and AUC. DECSP with GA outperforms other techniques on all four performance metrics. Further, we validated the results based on statistical tests.
Traits Transferability of Adversarial Examples against Instance Segmentation Object Detection
Venue: ArXiv
Year: 2018

Despite the recent advancements in deploying neural networks for image classification, it has been found that adversarial examples are able to fool these models leading them to misclassify the images. Since these models are now being widely deployed, we provide an insight on the threat of these adversarial examples by evaluating their characteristics and transferability to more complex models that utilize Image Classification as a subtask. We demonstrate the ineffectiveness of adversarial examples when applied to Instance Segmentation Object Detection models. We show that this ineffectiveness arises from the inability of adversarial examples to withstand transformations such as scaling or a change in lighting conditions. Moreover, we show that there exists a small threshold below which the adversarial property is retained while applying these input transformations. Additionally, these attacks demonstrate weak cross network transferability across neural network architectures, e.g. VGG16 and ResNet50, however, the attack may fool both the networks if passed sequentially through networks during its formation. The lack of scalability and transferability challenges the question of how adversarial images would be effective in the real world.
Mass Communication Research in Sustainability Science: Moving Toward an Engaged Approach to Address Society's Sustainability Dilemma
Year: 2016

Mass communication scholarship provides invaluable insight into how discursive trends in media reflect, produce, and obscure society's most pressing sustainability issues, yet too often this research falls short of creating action, interventions, or change. In this article, we argue that mass communication should be considered a cornerstone discipline for sustainability science research, particularly within transdisiciplinary sustainability science teams. We contend that mass communication researchers can advance sustainability efforts by moving toward a more engaged approach. In an effort to support scholars' transition to such engagement, we consider how traditional mass communication theories can add value to action oriented transdisciplinary sustainability science efforts and provide examples of engaged, transdisciplinary mass communication scholarship.
Inactivation of Human Nevus Tissue Using High Hydrostatic Pressure for Autologous Skin Reconstruction: A Novel Treatment for Giant Congenital Melanocytic Nevi.
Venue: Tissue engineering. Part C, Methods
Year: 2015

Giant congenital melanocytic nevi are intractable lesions associated with a risk of melanoma. High hydrostatic pressure (HHP) technology is a safe physical method for producing decellularized tissues without chemicals. We have reported that HHP can inactivate cells present in various tissues without damaging the native extracellular matrix (ECM) The objectives of this study were to inactivate human nevus tissue using HHP and to explore the possibility of reconstructing skin using inactivated nevus in combination with cultured epidermis (CE) Human nevus specimens 8 mm in diameter were pressurized by HHP at 100, 200, 500, and 1000 MPa for 10 min. The viability of specimens just after HHP, outgrowth of cells, and viability after cultivation were evaluated to confirm the inactivation by HHP. Histological evaluation using hematoxylin eosin staining and immunohistochemical staining for type IV collagen was performed to detect damage to the ECM of the nevus. The pressurized nevus was implanted into the subcutis of nude mice for 6 months to evaluate the retention of human cells. Then, human CE was applied on the pressurized nevus and implanted into the subcutis of nude mice. The viability of pressurized nevus was not detected just after HHP and after cultivation, and outgrowth of fibroblasts was not observed in the 200, 500, and 1000 MPa groups. Human cells were not observed after 6 months of implantation in these groups. No apparent damage to the ECM was detected in all groups; however, CE took on nevus in the 200 and 500 MPa groups, but not in the 1000 MPa group. These results indicate that human nevus tissue was inactivated by HHP at more than 200 MPa; however, HHP at 1000 MPa might cause damage that prevents the take of CE. In conclusion, all cells in nevus specimens were inactivated after HHP at more than 200 MPa and this inactivated nevus could be used as autologous dermis for covering full thickness skin defects after nevus removal. HHP between 200 and 500 MPa will be optimal to reconstruct skin in combination with cultured epidermal autograft without damage to the ECM.
House/ball culture and adolescent African American transgender persons and men who have sex with men: a synthesis of the literature
Venue: AIDS care
Year: 2011

Transgender persons and young men of color who have sex with men (YMSM of color) have been severely affected by HIV in the USA. Houses and balls in the USA have historically been a primary meeting ground for YMSM of color and transgender people, offering an opportunity for HIV prevention activities. Houses provide a familial structure for YMSM of color and transgender people, while balls provide them with events at which they can congregate for social support and entertainment. A comprehensive literature search was conducted using Scopus and PubMed, Internet websites, and HIV prevention and care resources for YMSM of color associated with a multisite evaluation. Houses and balls have been responsive to the HIV/AIDS epidemic and have developing networks that are critical in providing a social and familiar context for often disenfranchised youth. The organizations have embraced the need for HIV prevention, and their methodology may be transferable to other prevention contexts. Future studies are needed to identify culturally appropriate and effective methods of integration of house/ball methods into HIV prevention services aimed at transgender persons and YMSM of color.
Perspetiva dos estudantes e docentes acerca do debriefing na pratica simulada
Venue: Revista de Investigacao Inovacao em Saude
Year: 2019

Enquadramento: a simulacao e uma estrategia pedagogica que envolve uma representacao hipotetica da realidade clinica. O debriefing na pratica simulada consiste num metodo de aprendizagem que tem como objetivo a reflexao sobre o sucedido, incluindo aspetos positivos e negativos, com a formulacao de alternativas aos aspetos que correram menos bem. Objetivo: compreender a perspetiva dos estudantes e dos docentes do curso de licenciatura em enfermagem acerca da utilizacao do debriefing na pratica simulada. Metodologia: estudo qualitativo descritivo orientado pela teoria das representacoes sociais. Foi utilizado como instrumento de recolha de dados um questionario (googledocs) com um Teste de Associacao Livre de Palavras (TALP) e analise de dados com recurso ao Iramuteq. Resultados: o estudo integrou 52 estudantes e 9 docentes do curso de licenciatura em enfermagem. A partir da classificacao hierarquica descendente obtivemos cinco classes: competencia (30% pensamento critico reflexivo (23% aprendizagem (18% evolucao (18% e atitude (11% Conclusao: o debriefing na pratica simulada representa para os estudantes e docentes do curso da licenciatura em enfermagem um momento de desenvolvimento de competencias e pensamento critico reflexivo.
MASON A Multi Agent Simulation Environment
Year: 2008

We introduce MASON, a fast, easily extensible, discrete event multi agent simulation toolkit in Java. MASON was designed to serve as the basis for a wide range of multiagent simulation tasks ranging from swarm robotics to machine learning to social complexity environments. MASON carefully delineates between model and visualization, allowing models to be dynamically detached from or attached to visualizers, and to change platforms mid run. We describe the MASON system, its motivation, and its basic architectural design. We then compare MASON to related multi agent libraries in the public domain, and discuss six applications of the system we have built over the past year to suggest its breadth of utility.
A Spinoza Reader: The Ethics and Other Works
Year: 2020

This anthology of the work of Baruch de Spinoza (1632 1677) presents the text of Spinoza's masterwork, the "Ethics" in what is now the standard translation by Edwin Curley. Also included are selections from other works by Spinoza, chosen by Curley to make the "Ethics" easier to understand, and a substantial introduction that gives an overview of Spinoza's life and the main themes of his philosophy. Perfect for course use, the "Spinoza Reader" is a practical tool with which to approach one of the world's greatest but most difficult thinkers, a passionate seeker of the truth who has been viewed by some as an atheist and by others as a religious mystic. The anthology begins with the opening section of the "Treatise on the Emendation of the Intellect" which has always moved readers by its description of the young Spinoza's spiritual quest, his dissatisfaction with the things people ordinarily strive for wealth, honour, and sensual pleasure and his hope that the pursuit of knowledge would lead him to discover the true good. The emphasis throughout these selections is on metaphysical, epistemological, and religious issues the existence and nature of God, his relation to the world
Hot deformation behavior and flow stress modeling of Ti 6Al 4V alloy produced via electron beam melting additive manufacturing technology in single b phase field
Year: 2020

The hot working behaviour of additively manufactured Ti 6Al 4V pre forms by Electron Beam Melting (EBM) has been studied at temperatures of 1000 1200 degC and strain rates of 0.001 1 s 1. As a reference, a wrought Ti 6Al 4V alloy was also analyzed as same as the EBM one. In order to investigate the hot working behaviour of these samples, all the data evaluations were carried out step by step, and the stepwise procedure was discussed. No localized strain as a consequence of shear band formation was found in the samples after the hot compression. The flow stress curves of all the samples showed peak stress at low strains, followed by a regime of flow softening with a near steady state flow at large strains. Interestingly, it is found that the initial microstructure and porosity content as well as the chemistry of material (e.g. oxygen content) as being possible contributors to the lower level of flow stress that could be beneficial from the industrial point of view. The flow softening mechanism(s) were discussed in detail using the microstructure of the specimens before and after the hot deformation. Dynamic Recrystalization (DRX) could also explain the gentle oscillation in the appearance of the flow softening curves of the EBM samples. Moreover, the hot working analysis indicated that the activation energy for hot deformation of as built EBM Ti 6Al 4V alloy was calculated as ~193.25 kJ/mol, which was much lower than the wrought alloy (229.34 kJ/mol) These findings can shed lights on a new integration of metal Additive Manufacturing (AM) and thermomechanical processing. It is very interesting to highlight that through this new integration, it would be possible to reduce the forging steps and save more energy and materials with respect to the conventional routes.
Layer dependent multiplicative effects of spatial attention on contrast responses in human early visual cortex
Year: 2020

Attention mechanisms at different cortical layers of human visual cortex remain poorly understood. Using submillimeter resolution fMRI at 7T, we investigated the effects of top down spatial attention on the contrast responses across different cortical depths in human early visual cortex. Gradient echo (GE) T2* weighted BOLD signal showed an additive effect of attention on contrast responses across cortical depths. Compared to the middle cortical depth, attention modulation was stronger in the superficial and deep depths of V1, and also stronger in the superficial depth of V2 and V3. Using ultra high resolution (0.3mm in plane) balanced steady state free precession (bSSFP) fMRI, a multiplicative scaling effect of attention was found in the superficial and deep layers, but not in the middle layer of V1. Attention modulation of low contrast response was strongest in the middle cortical depths, indicating baseline enhancement or contrast gain of attention modulation on feedforward input. Finally, the additive effect of attention on T2* BOLD can be explained by strong nonlinearity of BOLD signals from large blood vessels, suggesting multiplicative effect of attention on neural activity. These findings support that top down spatial attention mainly operates through feedback connections from higher order cortical areas, and a distinct mechanism of attention may also be associated with feedforward input through subcortical pathway. Highlights Response or activity gain of spatial attention in superficial and deep layers Contrast gain or baseline shift of attention in V1 middle layer Nonlinearity of large blood vessel causes additive effect of attention on T2* BOLD
Research on information integration dynamic management analysis software
Year: 2010

Dynamic analysis need refer to the amount of related material as a reference to make integrated analysis.Aiming at the characteristics of heavy workload,larger consumption of time and energy and many errors in oilfield dynamic management,this paper researched information integration dynamic management analysis software.This software can display infomration set needed by dynamic analysis through well oriented bitmap operation,it can not only increase work efficiency,but also improve the quality of scheme design because of centralized,comprehensive,accurate and prompt information.
Power Losses Analysis in a Three Phase Distribution Transformer Using Artificial Neural Networks
Year: 2020

This research article presents the analysis of power losses in a three phase distribution transformer, 100 kVA 22 kV 400/230 V by using artificial neural networks that can analyze the power losses in distribution transformers faster and use fewer variables than the original method. The measurement data were collected for 100,000 sets at the transformer manufacturer factory by setting the current flow from 1% to 100% at temperatures: 30 *C, 35 *C, 40 *C, 45 *C, 50 *C, 55 *C, 60 *C, 65 *C, 70 *C, and 75 *C to calculate the power losses in a distribution transformer. The collected data were divided into 80,000 sets to use for training in order to find the parameters of the artificial neural networks, and 20,000 sets were used for the artificial neural network input in order to calculate power losses in a distribution transformer. From comparing the power losses in the distribution transformer of artificial neural networks compared with the calculated values from the measurement, the percentage error was at a satisfactory level and can be applied to design a test of power losses in the distribution transformer in the future.
Autonomous Navigation by Mobile Robots in Human Environments: A Survey
Venue: 2018 IEEE International Conference on Robotics and Biomimetics (ROBIO)
Year: 2018

With the service robots are well used in more and more indoor environments, autonomous navigation in such a human environment has been explored in recent decades. Different from the traditional navigation schemes, the new scenarios pose challenges about how to deal with the dynamic obstacles, especially the humans. To overcome the challenges, researchers need to consider: 1) the uncertainty of humans motion, 2) the interaction between human and robot, 3) the group information of the people. Also, the energy cost in the navigation process is of vital importance. In this case, the navigation requirements go far from the shortest path. In this paper, we reviewed the related works in the past decade, which can be roughly divided into four categories: reactive based, predictive based, model based and learning based. For each category, we analyzed some state of the arts, and listed the pros, cons and open problems. In the last of the paper, we summarized some evaluation metrics and corresponding methods.
Verification of "Too Much Finance" Hypothesis in Central and Eastern European Countries Empirical Research
Venue: Acta Universitatis Lodziensis. Folia Oeconomica
Year: 2019

This paper analyses the relationship between the domestic credit to GDP ratio and economic growth in a group of 11 countries in Central and Eastern Europe. The parameters of the econometric model used, were estimated using a pooled regression method and the Blundell Bond systemic estimator. The results of our empirical investigation show that the entire group can be divided into 3 homogeneous sub groups with different values of the optimal level of domestic credit to GDP ratio. Estimation of the parameters with the use of a panel model show that Latvia, Lithuania, Estonia and Slovakia would probably have reached a higher level of economic growth if the analysed coefficient had been at a level of 0.48. In the case of the sub group encompassing Poland, Czech Republic and Hungary, the optimal value of the analysed coefficient turned out to be 0.6. In the case of the Bulgaria, Croatia and Romania sub group, the development of the financial system, which is represented in this article by the ratio of domestic credit to GDP, does not seem to have any impact on the rate of growth of real GDP.
"Seriously, I came here to study English"
Venue: Study Abroad Research in Second Language Acquisition and International Education
Year: 2019

While English plays a prominent role in universities across the globe, study abroad research has rarely considered English learning in non Anglophone countries. This article presents a narrative case study of the experience of a Japanese exchange student in Thailand whose primary purpose for study abroad was to improve his English. Grounded in the notion of Individual Networks of Practice (Zappa Hollman Duff, 2015) the qualitative analysis will focus on the participant's evolving social networks and reported communication practices as mediated through available subject positions and varying degrees of investment. Particularly, findings reveal the dissonance between his investment in native speaker English and the reality of using English as a lingua franca, which decidedly influenced the student's (non )participation in certain social groups and practices. Casting fresh light on globalization and language learning, the study offers a unique contribution to the study abroad literature and suggests avenues for further research and education.
Mapping Memories through Geographic Information System: The Case ofSt Mark's Transdisciplinary Service Learning Project in District Six, Cape Town
Year: 2019

Through exploring the interconnections between transdisciplinarity and community service learning, the paper presents ways in which geographic information system and allied methods and tools can be used to preserve and share the socio spatial history of communities. The initiative that the paper is based on is known as St Mark's Church baptismal community service learning project, which came into existence when the said church imagined resurrecting the spirit and soul of District Six by visualising its baptismal records. It was anticipated that the visualisation would show where congregants resided when they were baptised, before their community was unceremoniously demolished by the apartheid regime. Participants in the initiative included St Mark's Anglican Church, students (from Cape Peninsula University of Technology and Michigan University) and District Six Museum. During the initiative, a transdisciplinary space organically developed wherein students with different disciplinary backgrounds collaborated towards achieving the aim of the project. So as to draw lessons for future initiatives, the paper particularly focuses on the process followed, instead of emphasising the nitty gritty details of the product (i.e. a Web map) Towards establishing a holistic socio spatial history of District Six, it is hoped that the project will be scaled up to include stories and memories of individuals and groups beyond the St Mark's Church congregation.
Multiple Access for Mobile UAV Enabled Networks: Joint Trajectory Design and Resource Allocation
Venue: IEEE Transactions on Communications
Year: 2019

In this paper, we investigate joint trajectory design and resource allocation algorithms to maximize the minimum average rate among ground users for unmanned aerial vehicle (UAV) communication systems, where both the orthogonal multiple access (OMA) and non orthogonal multiple access (NOMA) modes are considered. We first formulate the problems for UAV communications with the OMA and NOMA modes, respectively, which contain binary variables and highly coupled nonconvex objective functions and constraints. In order to handle the challenging problems, we transform the original problems into more tractable forms and then develop novel algorithms based on penalty dual decomposition technique to solve them. Simulation results show that the proposed algorithms outperform the benchmarks.