Miracle-dz/UniFAR-FTUs huggingface dataset:
A Theorem on the Surface Traction Field in Potential Representations of Stokes Flow

A characterization theorem for moments of the Stokes traction field on the bounding surface of a three-dimensional flow domain is stated and proved. Whereas the single-layer Stokes potentials lead to a weakly singular representation of the traction field on the boundary, the double-layer potentials lead to a hyper-singular representation, which is less convenient for analysis and numerics. However, in various applications, pointwise values of the traction field up to the boundary are not of direct interest, but rather moments of the traction with respect to given weighting functions. It is shown that such moments can be characterized in terms of weakly singular integrals for both the single- and double-layer potentials, and moreover, the characterization does not involve derivatives of the potential densities or the moment weighting functions. The result for the double-layer potentials can be viewed as a generalization and enhancement of the classic Lyapunov--Tauber theorem and may make these potentials e.
Giving applications access to Gb/s networking

Operating systems (OSs) used in high-speed networks must reduce copying to deliver maximal throughput to applications and must deliver this throughput while preserving the capability of the host to perform applications processing. One way to reduce copying by enabling data transfers directly to and from buffers located in application-process address spaces is presented. The method has been demonstrated experimentally and is shown to deliver high throughputs. OS support must also include scheduling, which allows bandwidth-allocated traffic streams to be delivered. The implementation described provides resource scheduling for network users, and considerably reduces interrupt overhead. <<ETX>>
AIS Electronic

After more than ten years of widespread use of e-commerce, there are still only a few models to specify the connection between consumer acceptance and the characteristics of an online shop. In particular, the available literature does not provide any constructs to evaluate the most basic functionality of an online shop: its search features. In this paper we describe a shopping experiment to validate a model that includes consumer characteristics as well as consumers' evaluations of a shop’s search features. Results demonstrate that (i) contrary to consumer research findings, only consumer involvement influences the consumers’ evaluation of the online shop, not the prior product knowledge; (ii) the relevance of search results and the evaluation of filtering mechanisms have a major impact on the perceived usefulness of the shop; and (iii) the ease of use of the shop does not affect perceived usefulness, as this relationship is fully mediated by the perceived costs of the information search process.
The Advanced Computing Systems Association the Case for Compressed Caching in Virtual Memory Systems the Case for Compressed Caching in Virtual Memory Systems

Compressed caching uses part of the available RAM to hold pages in compressed form, effectively adding a new level to the virtual memory hierarchy. This level attempts to bridge the huge performance gap between normal (un-compressed) RAM and disk. Unfortunately, previous studies did not show a consistent benefit from the use of compressed virtual memory. In this study, we show that technology trends favor compressed virtual memory—it is attractive now, offering reduction of paging costs of several tens of percent, and it will be increasingly attractive as CPU speeds increase faster than disk speeds. Two of the elements of our approach are innovative. First, we introduce novel compression algorithms suited to compressing in-memory data representations. These algorithms are competitive with more mature Ziv-Lempel compressors, and complement them. Second, we adaptively determine how much memory (if at all) should be compressed by keeping track of recent program behavior. This solves the problem of different programs, or phases within the same program, performing best for different amounts of compressed memory.
Subacute combined degeneration: clinical, electrophysiological, and magnetic resonance imaging findings

OBJECTIVE Vitamin B12 deficiency is a systemic disease that often affects the nervous system. One of the most prevalent manifestations is subacute combined degeneration (SCD) of the spinal cord. To access the clinical, electrophysiological, and structural abnormalities associated with SCD, a study was conducted in nine patients. METHODS Clinical, electrophysiological (electroneurography, somatosensory and motor evoked potentials), and MRI evaluations were performed in patients before and after treatment. RESULTS The most prominent clinical and electrophysiological findings in all patients were dysfunctions of the posterior column. Corresponding hyperintense lesions in the posterior column of the spinal cord were found in two patients by T2 weighted MRI. Damage to the central motor pathway was identified in four patients. Demyelinating neuropathy was present in one patient and axonal neuropathy in four. All patients showed improvement of their symptoms after treatment with cobalamin. Abnormalities of the spinal cord on MRI disappeared early in recovery. Motor evoked potentials and median somatosensory evoked potentials typically normalised after treatment, whereas tibial somatosensory evoked potentials remained abnormal in most patients. CONCLUSIONS Clinical, electrophysiological, and MRI findings associated with SCD in vitamin B12 deficiency are diverse. Thus vitamin B12 deficiency should be considered in the differential diagnosis of all spinal cord, peripheral nerve, and neuropsychiatric disorders.
A 1.2-V CMOS $RC$ Oscillator for Capacitive and Resistive Sensor Applications

An accurate self-adjusting CMOS RC oscillator for capacitive and resistive sensor applications has been designed and manufactured. The oscillator operates with supply voltages from 1.2 to 3 V and achieves an internal accuracy of plusmn0.7% with a temperature range from -20degC to 60degC. The RC oscillator was fabricated in a 0.35-mum standard n-well CMOS process with threshold voltages of 0.5 and -0.65 V. Its design and operation are described, and results of measurements performed on the fabricated chips are presented.
Temporaltracks: visual analytics for exploration of 4D fMRI time-series coactivation

Functional magnetic resonance imaging (fMRI) is a 4D medical imaging modality that depicts a proxy of neuronal activity in a series of temporal scans. Statistical processing of the modality shows promise in uncovering insights about the functioning of the brain, such as the default mode network, and characteristics of mental disorders. Current statistical processing generally summarises the temporal signals between brain regions into a single data point to represent the 'coactivation' of the regions. That is, how similar are their temporal patterns over the scans. However, the potential of such processing is limited by issues of possible data misrepresentation due to uncertainties, e.g. noise in the data. Moreover, it has been shown that brain signals are characterised by brief traces of coactivation, which are lost in the single value representations. To alleviate the issues, alternate statistical processes have been used, however creating effective techniques has proven difficult due to problems, e.g. issues with noise, which often require user input to uncover. Visual analytics, therefore, through its ability to interactively exploit human expertise, presents itself as an interesting approach of benefit to the domain. In this work, we present the conceptual design behind TemporalTracks, our visual analytics system for exploration of 4D fMRI time-series coactivation data, utilising a visual metaphor to effectively present coactivation data for easier understanding. We describe our design with a case study visually analysing Human Connectome Project data, demonstrating that TemporalTracks can uncover temporal events that would otherwise be hidden in standard analysis.
A Multi-Week Assessment of a Mobile Exergame Intervention in an Elementary School.

BACKGROUND Exergaming is potentially useful to promote physical activity in children; however, long-term effectiveness is unclear. MobileKids Monster Manor (MKMM) is a mobile exergame developed with the help of young advisors. The game wirelessly transmits physical activity data from an accelerometer to a mobile device. Players' steps are redeemed for in-game rewards, for example, new characters. OBJECTIVE First, to evaluate whether increased physical activity previously observed in a 1-week intervention is sustained over a 2-week intervention and 1-week follow-up, and second, to compare impact in schools within different socioeconomic environments. METHODS Thirty-seven elementary school students participated in a 4-week randomized controlled study (1-week baseline; 2-week intervention [with only the Game group receiving MKMM]; and 1-week follow-up). All participants wore a Tractivity® accelerometer throughout. Linear mixed models were applied to assess sustainability; a second 42-children-based dataset and age-/sex-adjusted linear regression models were used to compare effect across socioeconomic environments. RESULTS In the first week of intervention, the Game group compared to the Control group showed a greater increase in physical activity (of 1,758 steps/day [95% confidence interval, CI = 133-3,385] and 31 active minutes/day [95% CI = 4-59]), relative to baseline (13,986 steps/day; 231 active minutes/day). However, this was not sustained in the second intervention week or follow-up. The school within a lower socioeconomic status environment showed lower baseline activity and the 1-week intervention resulted in a greater increase relative to baseline (3,633 steps/day more [95% CI = 1,281-5,985]). CONCLUSION MKMM could be a useful short-term physical activity promotion tool; however, effectiveness may decrease as novelty diminishes.
The DHX33 RNA Helicase Promotes mRNA Translation Initiation

ABSTRACT DEAD/DEAH box RNA helicases play essential roles in numerous RNA metabolic processes, such as mRNA translation, pre-mRNA splicing, ribosome biogenesis, and double-stranded RNA sensing. Herein we show that a recently characterized DEAD/DEAH box RNA helicase, DHX33, promotes mRNA translation initiation. We isolated intact DHX33 protein/RNA complexes in cells and identified several ribosomal proteins, translation factors, and mRNAs. Reduction of DHX33 protein levels markedly reduced polyribosome formation and caused the global inhibition of mRNA translation that was rescued with wild-type DHX33 but not helicase-defective DHX33. Moreover, we observed an accumulation of mRNA complexes with the 80S ribosome in the absence of functional DHX33, consistent with a stalling in initiation, and DHX33 more preferentially promoted structured mRNA translation. We conclude that DHX33 functions to promote elongation-competent 80S ribosome assembly at the late stage of mRNA translation initiation. Our results reveal a newly recognized function of DHX33 in mRNA translation initiation, further solidifying its central role in promoting cell growth and proliferation.
The evolution of the Science Citation Index.

The Science Citation Index was proposed over 50 years ago to facilitate the dissemination and retrieval of scien- tific literature. Its unique search engine, based on citation searching, was not widely adopted until it was made available online in 1972. Its by product, Journal Citation Reports, be- came available in 1975 and included its rankings by impact factor. Impact factors were not widely implemented until about a decade ago, when they began to be used as surrogates for expected citation frequencies for recently published papers—a highly controversial application of scientometrics in evaluating scientists and institutions. Here, the inventor of both the SCI and its companion, Social Sciences Citation Index, review the history of these instruments and discusses their more recent use in graphically visualizing microhistories of scholarly topics. In an example thereof, the patented HistCite software for algo- rithmic historiographic analysis is used to follow the genealogy of the Watson-Crick discovery of the double-helix structure of DNA and its relationship to the work of Heidelberger, Avery, and others.
Semantic Similarity Computation for Abstract and Concrete Nouns Using Network-based Distributional Semantic Models

Motivated by cognitive lexical models, network-based distributional semantic models (DSMs) were proposed in [Iosif and Potamianos (2013)] and were shown to achieve state-of-the-art performance on semantic similarity tasks. Based on evidence for cognitive organization of concepts based on degree of concreteness, we investigate the performance and organization of network DSMs for abstract vs. concrete nouns. Results show a “concreteness effect” for semantic similarity estimation. Network DSMs that implement the maximum sense similarity assumption perform best for concrete nouns, while attributional network DSMs perform best for abstract nouns. The performance of metrics is evaluated against human similarity ratings on an English and a Greek corpus.
MobiCacher: Mobility-aware content caching in small-cell networks

Small-cell networks have been proposed to meet the demand of ever growing mobile data traffic. One of the prominent challenges faced by small-cell networks is the lack of sufficient backhaul capacity to connect small-cell base stations (small-BSs) to the core network. We exploit the effective application layer semantics of both spatial and temporal locality to reduce the backhaul traffic. Specifically, we envision that small-BSs are equipped with storage facility to cache contents requested by users. As the cache hit ratio increases, most of the users' requests can be satisfied locally without incurring traffic over the backhaul. To make informed caching decisions, the mobility patterns of users must be carefully considered as users might frequently migrate from one small cell to another. We study the issue of mobility-aware content caching, which is formulated into an optimization problem with the objective to maximize the caching utility. As the problem is NP-complete, we develop a polynomial-time heuristic solution termed MobiCacher with bounded approximation ratio. We conduct trace-based simulations to evaluate the performance of MobiCacher, which show that MobiCacher yields better caching utility than existing solutions.
Distinguishing Parkinson’s disease and essential tremor with transcranial sonography

Objectives – Until today there is no reliable test that can clearly distinguish Parkinson’s disease (PD) from the essential tremor (ET). Our aim was to determine the usefulness of the transcranial sonography (TCS) in the differential diagnosis of the PD and ET as well as the interobserver reliability for this method.
A Resource Allocation Trade-Off between Virulence and Proliferation Drives Metabolic Versatility in the Plant Pathogen Ralstonia solanacearum

Bacterial pathogenicity relies on a proficient metabolism and there is increasing evidence that metabolic adaptation to exploit host resources is a key property of infectious organisms. In many cases, colonization by the pathogen also implies an intensive multiplication and the necessity to produce a large array of virulence factors, which may represent a significant cost for the pathogen. We describe here the existence of a resource allocation trade-off mechanism in the plant pathogen R. solanacearum. We generated a genome-scale reconstruction of the metabolic network of R. solanacearum, together with a macromolecule network module accounting for the production and secretion of hundreds of virulence determinants. By using a combination of constraint-based modeling and metabolic flux analyses, we quantified the metabolic cost for production of exopolysaccharides, which are critical for disease symptom production, and other virulence factors. We demonstrated that this trade-off between virulence factor production and bacterial proliferation is controlled by the quorum-sensing-dependent regulatory protein PhcA. A phcA mutant is avirulent but has a better growth rate than the wild-type strain. Moreover, a phcA mutant has an expanded metabolic versatility, being able to metabolize 17 substrates more than the wild-type. Model predictions indicate that metabolic pathways are optimally oriented towards proliferation in a phcA mutant and we show that this enhanced metabolic versatility in phcA mutants is to a large extent a consequence of not paying the cost for virulence. This analysis allowed identifying candidate metabolic substrates having a substantial impact on bacterial growth during infection. Interestingly, the substrates supporting well both production of virulence factors and growth are those found in higher amount within the plant host. These findings also provide an explanatory basis to the well-known emergence of avirulent variants in R. solanacearum populations in planta or in stressful environments.
Prosodic Signalling of Sentence Mode in Two Varieties of Irish (Gaelic)

This paper examines how sentence mode is encoded in the typically falling (Inis Mór) and rising (Donegal) varieties of Irish (Gaelic). Analyses cover the phonological description of tunes as well as the global and local f0 metrics in statements and two question types. Results suggest that sentence mode is already marked by tune in Donegal Irish. Inis Mór, however, uses the same array of tunes in both statements and questions, only with varying frequency. Additionally, in both dialects effect of sentence mode is found in specific f0 metrics even when the same tune type is employed.
Disease controllability moderates the effect of coping efficacy on positive affect

Objective: This study aims to test experimentally whether coping strategies (approach- vs. avoidance-oriented coping) have differential effects under conditions of high or low stressor controllability. Design: Undergraduates (62 women, 30 men) participated in a 2 × 2 experimental study where they were introduced to a fictitious disease (tisomerase enzyme deficiency) said to be either controllable or uncontrollable and an approach- or avoidance-oriented coping behaviour induction. Main Outcome Measures: Changes in positive and negative affect. Results: A significant disease control x coping interaction on positive affect (f2 = .07, p = .011) revealed that approach-coping condition participants had higher positive affect than avoidance-coping condition participants when disease control was high (d = .94, p = .003), but not when it was low (d = .11, p = .93). The experimental conditions did not significantly influence negative affect. Conclusion: Results demonstrate that disease control moderates the salubrious effects of approach-oriented coping on positive affect. For controllable, but not uncontrollable, health stressors, promoting problem-focused approach-oriented coping strategies may be recommended.
Military Capacity and Civil Adjustment: Assessments of the ‘Re‐Usable’ Peacekeeping Soldier for Development of a Selection System

This study investigated whether ‘re‐usable’ soldiers, that is, those who performed well during operations (military capacity), and were able to readjust postdeployment (civil adjustment), could be identified at predeployment. Participants were 364 UN peacekeeping soldiers. Three hypotheses were posed: the selection system for conscripts cannot identify soldiers with low military capacity (H: 1); the selection system for conscripts cannot identify soldiers with poor civil adjustment after deployment (H: 2); and the two aspects of ‘re‐usability’ (military capacity and civil adjustment) would be intertwined (H: 3). Results showed that the selection system for conscripts was unable to identify soldiers' military capacity and civil adjustment. Results also showed that these two aspects were unrelated, and did not interact. Indications on possible consequences and improvements are discussed.
Modeling, Guided Instruction, and Application of UDL in a Rural Special Education Teacher Preparation Program

Implementation of universal design for learning (UDL) in undergraduate special education programs offers a valuable foundation for training preservice teachers to educate K-12 students in rural schools. In this article, we provide an overview of UDL and the integration of multiple means of representation, engagement, and expression in assessment, classroom management, and instructional planning courses. We share examples of faculty modeling, guided instruction, and preservice teacher application of UDL components with case studies and K-12 students in practicum experiences. We discuss challenges, implications, and next steps for integrating UDL in rural university and K-12 classrooms to meet the needs of diverse learners.
Automatic Production System of Soccer Sports Video by Digital Camera Work Based on Situation Recognition

We are studying about automatic production of soccer sports videos for easy understanding by using digital camera work on camera fixed videos. The digital camera work is a movie technique which uses virtual panning and zooming by clipping frames from hi-resolution images and controlling the frame size and position. We have studied so far digital panning. In this paper, we propose a method of digital zooming by automatically recognizing the game situation or events such as penalty kick and free kick based on player and ball tracking. These recognition results are used as key indices to retrieve the event scenes from soccer videos. We compared the proposed technique with a conventional technique by AHP method that can reflect an individual subjectivity
Optimal halfspace range reporting in three dimensions

We give the first optimal solution to a standard problem in computational geometry: three-dimensional halfspace range reporting. We show that n points in 3-d can be stored in a linear-space data structure so that all k points inside a query halfspace can be reported in O(log n + k) time. The data structure can be built in O(n log n) expected time. The previous methods with optimal query time required superlinear (O(n log log n)) space. We also mention consequences, for example, to higher dimensions and to external-memory data structures. As an aside, we partially answer another open question concerning the crossing number in Matousek's shallow partition theorem in the 3-d case (a tool used in many known halfspace range reporting methods).
Los repositorios de acceso abierto en la Argentina situación actual

Se llevo a cabo una caracterizacion basica y descriptiva de los repositorios argentinos de acceso abierto. Se identificaron quince repositorios: siete institucionales pertenecientes a cinco universidades nacionales; cuatro tematicos; tres de tesis y disertaciones y una biblioteca digital exclusivamente de revistas. De la investigacion, se desprende que en nuestro pais no hay politicas publicas ni mandatos relacionados con el acceso abierto; si proyectos aislados surgidos y mantenidos en general por la iniciativa y el trabajo de los bibliotecarios, sobre todo en el ambito universitario.
Investigating the Impact of Feedback on Gaming Performance on Motivation to Interact with Public Displays

This paper investigates the influence of feedback about users' performance on their motivation as they interact with games on displays in public space. Our research is motivated by the fact that games are popular among both researchers and practitioners, due to their ability to attract many users. However, it is widely unclear, which factors impact on how much people play and whether they leave personal information on the display. We investigate different forms of feedback (highscore, real-time score and real-time rank during gameplay) and report on how they influence the behavior of users. Our results are based on data from the deployment of an interactive game in a public space.