nils-herrmann/clean_scirepeval huggingface dataset:
Testing the Efficacy of OurSpace, a Brief, Group Dynamics Based Physical Activity Intervention: A Randomized Controlled Trial
Venue: Journal of medical Internet research

Emerging technologies (ie, mobile phones, Internet) may be effective tools for promoting physical activity (PA) However, few interventions have provided effective means to enhance social support through these platforms. Face to face programs that use group dynamics based principles of behavior change have been shown to be highly effective in enhancing social support through promoting group cohesion and PA, but to date, no studies have examined their effects in Web based programs.  The aim was to explore proof of concept and test the efficacy of a brief, online group dynamics based intervention on PA in a controlled experiment. We expected that the impact of the intervention on PA would be moderated by perceptions of cohesion and the partner's degree of presence in the online media.  Participants (n=135) were randomized into same sex dyads and randomly assigned to one of four experimental conditions: standard social support (standard) group dynamics based high presence, group dynamics based low presence, or individual control. Participants performed two sets of planking exercises (pre post) Between sets, participants in partnered conditions interacted with a virtual partner using either a standard social support app or a group dynamics based app (group dynamics based low presence and group dynamics based high presence) the latter of which they participated in a series of online team building exercises. Individual participants were given an equivalent rest period between sets. To increase presence during the second set, participants in the group dynamics based high presence group saw a live video stream of their partner exercising. Perceptions of cohesion were measured using a modified PA Group Environment Questionnaire. Physical activity was calculated as the time persisted during set 2 after controlling for persistence in set 1.  Perceptions of cohesion were higher in the group dynamics based low presence (overall mean 5.81, SD 1.04) condition compared to the standard (overall mean 5.04, SD 0.81) conditions (P=.006) but did not differ between group dynamics based low presence and group dynamics based high presence (overall mean 5.42, SD 1.07) conditions (P=.25) Physical activity was higher in the high presence condition (mean 64.48, SD 20.19, P=.01) than all other conditions (mean 53.3, SD 17.35)  A brief, online group dynamics based intervention may be an effective method of improving group cohesion in virtual PA groups. However, it may be insufficient on its own to improve PA.
First Gaia Local Group Dynamics: Magellanic Clouds Proper Motion and Rotation

We use the Gaia data release 1 (DR1) to study the proper motion (PM) fields of the Large and Small Magellanic Clouds (LMC, SMC) This uses the Tycho Gaia Astrometric Solution (TGAS) PMs for 29 Hipparcos stars in the LMC and 8 in the SMC. The LMC PM in the West and North directions is inferred to be \mu_W,\mu_N) 1.872 \pm 0.045, 0.224 \pm 0.054) mas/yr, and the SMC PM \mu_W,\mu_N) 0.874 \pm 0.066, 1.229 \pm 0.047) mas/yr. These results have similar accuracy and agree to within the uncertainties with existing Hubble Space Telescope (HST) PM measurements. Since TGAS uses different methods with different systematics, this provides an external validation of both data sets and their underlying approaches. Residual DR1 systematics may affect the TGAS results, but the HST agreement implies this must be below the random errors. Also in agreement with prior HST studies, the TGAS LMC PM field clearly shows the clockwise rotation of the disk, even though it takes the LMC disk in excess of $10^8$ years to complete one revolution. The implied rotation curve amplitude for young LMC stars is consistent with that inferred from line of sight (LOS) velocity measurements. Comparison of the PM and LOS rotation curves implies a kinematic LMC distance modulus $m M 18.54 \pm 0.39$ consistent but not yet competitive with photometric methods. These first results from Gaia on the topic of Local Group dynamics provide an indication of how its future data releases will revolutionize this field.
The Benefits of Active Video Games for Educational and Physical Activity Approaches: A Systematic Review

This article sets out to conduct a systematic review of the current literature on active video games as potential educational tools for physical education or physical activity. To begin with, research on active video games for educational and physical purposes has been examined with the purpose of verifying improvement of attitudes, intellectual skills, knowledge, motor skills and physical properties associated with physical activity and physical education. A second aim will be to determine the effectiveness of active video games compared with traditional approaches to physical activity. From this perspective, a systematic literature search from relevant international databases was conducted from January to July 2015 in order to find papers published in journals or conference proceedings from January 2010 onwards. Then, 2648 references were identified in database searches and 100 of these papers met the inclusion criteria. Two main conclusions are to be drawn from this research. Firstly, controlled studies demonstrate that active video games increase capacities in relation to physical activity and education. Secondly, Research also shows that physical activity interventions designed and measured using behavioural theories are more likely to be successful in comparison with traditional exercise activities.
A Minimally Supervised Approach for Synonym Extraction with Word Embeddings
Venue: Prague Bull. Math. Linguistics

In this paper we present a novel approach to minimally supervised synonym extraction. The approach is based on the word embeddings and aims at presenting a method for synonym extraction that is extensible to various languages. We report experiments with word vectors trained by using both the continuous bag of words model (CBoW) and the skip gram model (SG) investigating the effects of different settings with respect to the contextual window size, the number of dimensions and the type of word vectors. We analyze the word categories that are (cosine) similar in the vector space, showing that cosine similarity on its own is a bad indicator to determine if two words are synonymous. In this context, we propose a new measure, relative cosine similarity, for calculating similarity relative to other cosine similar words in the corpus. We show that calculating similarity relative to other words boosts the precision of the extraction. We also experiment with combining similarity scores from differently trained vectors and explore the advantages of using a part of speech tagger as a way of introducing some light supervision, thus aiding extraction. We perform both intrinsic and extrinsic evaluation on our final system: intrinsic evaluation is carried out manually by two human evaluators and we use the output of our system in a machine translation task for extrinsic evaluation, showing that the extracted synonyms improve the evaluation metric.
The Role of Foreign Policy and International Relations in Economic Development Based on the Philosophy of Liberalism

The national economic growth is one of the most important development indicators that are affected by a variety of factors including the international relations. International relations consist of a series of actions and interactions of the government and non government an institutions and political processes of the nations. However, international politics refers to the governmental behaviors or their reactions. On the other hand, and foreign policy includes a set of governmental decisions concerning the foreign relations. Liberalism is a comprehensive view that covers the domestic and foreign policies and is the theoretical framework of this study to discuss the economic development. This library study aimed to investigate the role of the international relations in economic development and analyzed a wide range of the theories or discussions. Review of literature showed the role of the international relations in the economic development of the societies. Furthermore, according to the theory of liberalism, all the countries in the world are interdependent and if this kind of interdependence is efficiently managed using a comprehensive framework it may lead to the economic development.
Qatar's progress towards preventing terror finance through the abuse of charitable status and the financial sector

This paper aims to track Qatar's progress in preventing abuse of charitable status or of its financial regulations to prevent terror finance.  Qatar's progress towards meeting the demands of the Central Themes will thus be summarised and explored. This paper tracks its history in response to evolving Financial Action Task Force (FATF) standards, and considers how Qatar can take measures to enhance their reputation.  Qatar's efforts were found to be sustained but these still fall short of emerging standards. This paper advocates for higher standards.  This original paper and novel approach is useful to policymakers and researchers of AML/CTF law. It is particularly timely in advance of the 2017 mutual evaluation of Qatar. It advances the findings of on another article written by the author.
Is majority consistency possible?
Venue: Soc. Choice Welf.

The most well known approaches to decision rules are inspired by "majority based" and "ranking based" utilitarianism. The long lasting discussion on the appropriate collective decision mechanism is based on the merits of the rules consistent with these two approaches. Focusing on conformity with qualified majority, we propose single approval multiple rejection (SAMR) as a plausible flexible scoring rule narrowing the gap between the two approaches. Given k alternatives, such a mechanism permits approval of a single alternative and rejection of at most (k 2)(k 2) alternatives allowing any relative significance of the approved vs. the rejected alternatives. SAMR is the unique type of rule that spans the whole spectrum of the qualified majority based utilitarian rules, independent of k. Our first characterization result exposes the relationship between its consistency with any predetermined \alpha $a majority based rule, \alpha >1/2$$a>1/2, and the best/worst (approval/rejection) relative weight p. Our second result establishes that the plurality rule is the unique scoring rule consistent with any \alpha $a majority, \alpha 1/2$$a<1/2. These results imply the impossibility of universal scoring rule consistency with any ideal or real \alpha $a majority.
Design and hardware implementation of reconfigurable nano satellite communication system using FPGA based SDR for FM/FSK demodulation and BPSK modulation
Venue: 2016 International Conference on Communication Systems and Networks (ComNet)

Communication system is one of the major areas in which digital signal processing finds direct application. Recent advances in signal processing have helped in enormously reducing the complexity of communication system design and also in improving the performance of the system. Software Defined Radio (SDR) enables in orbit re configurability of frequency, modulation scheme, data rate, bandwidth and channel coding in the case of satellite communication systems where component change is not possible after launch. This paper describes the design and hardware implementation of SDR type communication system based on FPGA for a nano satellite. The major functions carried out onboard are FM/FSK demodulation for tele command uplink and BPSK modulation with raised cosine filtering for telemetry downlink. The full system is designed and implemented based on Microsemi Smartfusion2 FPGA. For hardware evaluation of the system, Virtex 6 FPGA with high speed analog daughter card is employed. Test results are also provided at the end of the paper along with implementation of re configurability.
FPGA implementation of high speed reconfigurable filter bank for multi standard wireless communication receivers
Venue: 2016 20th International Symposium on VLSI Design and Test (VDAT)

In next generation wireless communication system, wireless transceivers should be able to handle wideband input signals compromising of multiple communication standards. Such multi standard wireless communication receivers (MWCRs) need filter bank to extract the desired signal of interest from wideband input spectrum and bring it to the baseband for further signal processing tasks such as spectrum sensing, modulation classification, demodulation etc. In MWCRs, rather any wireless receivers, modulated filter banks, such as Discrete Fourier Transform Filter Banks (DFTFB) are preferred due to their advantages such as lower area, delay and power requirements. To support multi standard operation, reconfigurable DFTFB (RDFTFB) was proposed by integrating DFTFB with the coefficient decimation method. In this paper, an efficient high speed implementation of RDFTFB on Virtex 7 field programmable gate arrays (FPGA) has been proposed. The proposed approach minimizes the critical path delay between clocked registers thereby leading to significant improvement in the maximum operating frequency of the RDFTFB. Numerically, the proposed implementation leads to 89.7% improvement in the maximum frequency at which RDFTFB can be clocked. Furthermore, proposed implementation leads to 18.5% reduction in the dynamic power consumption.
Methyltestosterone alters sex determination in the American alligator (Alligator mississippiensis)
Venue: General and comparative endocrinology

Effects of xenobiotics can be organizational, permanently affecting anatomy during embryonic development, and/or activational, influencing transitory actions during adulthood. The organizational influence of endocrine disrupting contaminants (EDC's) produces a wide variety of reproductive abnormalities among vertebrates that exhibit temperature dependent sex determination (TSD) Typically, such influences result in subsequent activational malfunction, some of which are beneficial in aquaculture. For example, 17 amethyltestosterone (MT) a synthetic androgen, is utilized in tilapia farming to bias sex ratio towards males because they are more profitable. A heavily male biased hatchling sex ratio is reported from a crocodile population near one such tilapia operation in Guanacaste, Costa Rica. In this study we test the effects of MT on sexual differentiation in American alligators, which we used as a surrogate for all crocodilians. Experimentally, alligators were exposed to MT in ovo at standard ecotoxicological concentrations. Sexual differentiation was determined by examination of primary and secondary sex organs post hatching. We find that MT is capable of producing male embryos at temperatures known to produce females and demonstrate a dose dependent gradient of masculinization. Embryonic exposure to MT results in hermaphroditic primary sex organs, delayed renal development and masculinization of the clitero penis (CTP)
Design of a transverse flux machine as joint drive for an articulated six axis robot arm
Venue: 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

This paper presents requirements on a articulated robot arm in service robotics and the derivation of requirements on a single joint of this arm. A modular concept with joint modules, each one realizing one axis of the robot arm connected by intermediate elements is proposed. Furthermore, the integration of a permanent magnet excited transverse flux machine as joint drive in this application is discussed. Transverse flux machines typically offer a high torque density at low speed. As torque demand increases from wrist to shoulder joint and speed demand decreases at the same time, this paper concentrates on the design of a shoulder joint module, where the integration of a transverse flux machine seems to be most promising. A design of a transverse flux machine as drive of an exemplary shoulder joint is proposed and results from a three dimensional finite element simulation are presented.
Printable skin adhesive stretch sensor for measuring multi axis human joint angles
Venue: 2016 IEEE International Conference on Robotics and Automation (ICRA)

This paper presents a printable skin adhesive stretch sensor to estimate rotation angles of multi axis joint for biomedical engineering applications, such as gait analysis, gesture recognition, and motion monitoring. Silicone rubber mixed with multiwall carbon nanotube composites were fabricated to make a highly stretchable (up to 120% strain sensors. Embedding liquid state composites to the fabric leaded to enhance the adhesive force between the composites and fabric. The skin adhesive sensor system could be used to estimate rotation angles of the multi axis joints while providing comfortable physical interfaces. To reduce misalignment to the axis of rotation, a calibration method was formulated based on geometrical relationship between the sensor axes and the joint angle. In order to validate the estimation performance of the sensor in multi axis joint, shoulder flexion/extension and abduction/adduction angles were estimated. The results showed the system could estimate the rotation angles of the shoulder enough to identify motion intentions of the user. In the future, the proposed system can be applied to the motion monitoring system by direct attachment to skin without discomfort to the user in daily life.
Performance study of magnesium sulfur battery using a graphene based sulfur composite cathode electrode and a non nucleophilic Mg electrolyte.
Venue: Nanoscale

Here we report for the first time the development of a Mg rechargeable battery using a graphene sulfur nanocomposite as the cathode, a Mg carbon composite as the anode and a non nucleophilic Mg based complex in tetraglyme solvent as the electrolyte. The graphene sulfur nanocomposites are prepared through a new pathway by the combination of thermal and chemical precipitation methods. The Mg/S cell delivers a higher reversible capacity (448 mA h g( 1) a longer cyclability (236 mA h g( 1) at the end of the 50(th) cycle) and a better rate capability than previously described cells. The dissolution of Mg polysulfides to the anode side was studied by X ray photoelectron spectroscopy. The use of a graphene sulfur composite cathode electrode, with the properties of a high surface area, a porous morphology, a very good electronic conductivity and the presence of oxygen functional groups, along with a non nucleophilic Mg electrolyte gives an improved battery performance.
Towards Web Accessibility Guidelines of Interaction and Interface Design for People with Autism Spectrum Disorder
Venue: ACHI 2016

In this paper, we describe a proposal set of Web accessibility guidelines of interaction and interface design for people with Autism Spectrum Disorder (ASD) to help Web professionals to design accessible Web interfaces for these users. The guidelines were extracted from an exploratory bibliographic survey of 17 works published between 2005 and 2015 including international recommendations, commercial or academic software and peer reviewed papers. We identified 107 guidelines that were grouped in 10 categories using the affinity diagram technique. Then, we systematized the guidelines in each group according to similarities and duplicated statements, generating a set of 28 guidelines. As a result, we evidenced best practices to design accessible Web interfaces for people with ASD based on well succeeded solutions presented in works of different contexts. With those results, we aim to contribute to the state of the art of cognitive Web accessibility. Therefore, we intend to make the set of guidelines available in a repository on GitHub.  Accessibility; Autism; Guidelines;
Assessing the variable ecosystem services relationships in polders over time: a case study in the eastern Chaohu Lake Basin, China
Venue: Environmental Earth Sciences

Land use changes can isolate habitat patches, thereby aggravating the fragmentation of these units and altering natural ecological processes. Thus, it is necessary to analyze the responses of ecosystem services to changes in land use over time. Polders, a typical floodplain landscape in the Chaohu Lake Basin, were selected as the study area to evaluate how ecosystem services respond to changes in both land use and patch size over time. Multiple approaches, including remote sensing, geographical information system and correspondence analysis, were used. The results showed that the total ecosystem services were increased from 9.97 x 108 to 1.02 x 109 Yuan for all polders. Based on a correspondence analysis, recreation and culture, water supply and waste treatment are the ecosystem services that depend on water bodies, whereas six other types of ecosystem services (biodiversity protection, climate regulation, food production, raw material, soil formation and protection and gas regulation) depend on soil. Therefore, there are trade offs between the ecosystem services provided by farmlands and those provided by water bodies, between supporting and provisioning services and cultural services in the polders, and between provisioning services and most regulating services. Furthermore, trade offs and synergies were detected among regulating services. In this study, the relationships between patch sizes and ecosystem services were significantly changed during the 1985 2007 period, particularly from 2000 to 2007. The area variation of special land use can drive changes in these relationships. Notably, correspondence analysis can be used as a method to analyze synergies and trade offs among multiple ecosystem services.
Use of Wearable Inertial Sensor in the Assessment of Timed Up and Go Test: Influence of Device Placement on Temporal Variable Estimation
Venue: MobiHealth

The "Timed Up and Go" (TUG) test is widely used in various disorders to evaluate subject's mobility, usually evaluating only time execution. TUG test specificity could be improved by using instrumented assessment based on inertial sensors. Position of the sensor is critical. This study aimed to assess the reliability and validity of an inertial sensor placed in three different positions to correctly segment the different phases in the TUG test. Finding demonstrated good reliability of the proposed methodology compared to the gold standard motion analysis approach based on surface markers and an optoelectronic system. Placing the sensor just beneath the lumbar sacral joint reported the lower values of deviation with respect to the gold standard. Optimized position can extend the proposed methodology from the clinical context towards ubiquitous solutions in an ecological approach.
Teaching Global Software Engineering by Simulating a Global Project in the Classroom
Venue: SIGCSE

Globalization has long since found its way into software engineering. Many companies transfer part of their development activities to distributed countries in order to ensure their global competitiveness, gain access to local markets and react to the prevailing lack of specialized workforce. The global distribution of project teams introduces new challenges: Geographic separation, different time zones, remote communications, and culture and language barriers make the collaboration between team members more difficult. Instructors in universities are faced with the problem of how to make students with little or no experience aware of the challenges of Global Software Engineering and equip them with skills to deal with them. International practical courses are effective but require high organizational effort. In this paper, we describe an exercise for teaching Global Software Engineering in a single classroom and report on our experiences. The exercise simulates a global software project within three sites. Through the exercise, students experienced some of the aforementioned challenges and tried to deal with them in a simulated environment.