Miracle-dz/UniFAR-FTUs huggingface dataset:
Batch Sampling : Low Overhead Scheduling for Sub-Second Parallel Jobs

Large-scale data analytics frameworks are shifting towards shorter task durations and larger degrees of parallelism to provide low latency. However, scheduling highly parallel jobs that complete in hundreds of milliseconds poses a major scaling challenge for cluster schedulers, which will need to place millions of tasks per second on appropriate nodes while offering millisecondlevel latency and high availability. This paper presents a decentralized load balancing approach called batch sampling, based on a generalization of the power of two random choices, that performs within a few percent of an optimal centralized scheduler. We evaluate our approach through both analytical results and an implementation called Sparrow. Sparrow schedules tasks with less than 8ms of overhead and features a design that is inherently fault-tolerant and scalable.
Design and experiment of rudder load simulator for high dynamic aircraft

The design of flight control system for high dynamic aircraft (HDA) requires a more efficient positional accuracy and quicker response of rudder system. Design and experimental studies on electric rudder load simulator is an essential method to study the performance of HDA rudder system. The performance of a real rudder system can be tested by simulating aerodynamic loads under various high dynamic flight conditions. An electric rudder load simulator (ERLS) with compound torque and rudder angular velocity feedforward controller is designed. High dynamic load test under small torque is performed. The tests show that amplitude of load torque is less than 8N·m. The amplitude distinction between load torque and command torque is 1.8%, and the phase distinction is 5.3°. The results analyzed by Fourier analysis show that the dynamic bandwidth of ERLS can achieve at 10 Hz.
The Next Paradigm Shift: From Vehicular Networks to Vehicular Clouds

The past decade has witnessed a growing interest in vehicular networking and its vast array of potential applications. Increased wireless accessibility of the Internet from vehicles has triggered the emergence of vehicular safety applications, locationspecific applications, and multimedia applications. Recently, Professor Olariu and his coworkers have promoted the vision of Vehicular Clouds (VCs), a non-trivial extension, along several dimensions, of conventional Cloud Computing. In a VC, the under-utilized vehicular resources including computing power, storage and Internet connectivity can be shared between drivers or rented out over the Internet to various customers, very much as conventional cloud resources are. The goal of this chapter is to introduce and review the challenges and opportunities offered by what promises to be the Next Paradigm Shift:From Vehicular Networks to Vehicular Clouds. Specifically, the chapter introduces VCs and discusses some of their distinguishing characteristics and a number of fundamental research challenges. To illustrate the huge array of possible applications of the powerful VC concept, a number of possible application scenarios are presented and discussed. As the adoption and success of the vehicular cloud concept is inextricably related to security and privacy issues, a number of security and privacy issues specific to vehicular clouds are discussed as well. Additionally, data aggregation and empirical results are presented. Mobile Ad Hoc Networking: Cutting Edge Directions, Second Edition. Edited by Stefano Basagni, Marco Conti, Silvia Giordano, and Ivan Stojmenovic. © 2013 by The Institute of Electrical and Electronics Engineers, Inc. Published 2013 by John Wiley & Sons, Inc.
A tweet grouping methodology utilizing inter and intra cosine similarity

Twitter enables users to write and publish messages with a maximum of 140 characters. This is sometimes termed micro-blogging because individuals often use Twitter to communicate their thoughts, commentary or feelings about any given subject. Twitter's significant popularity and mass usage has resulted in any subject queried from the Twitter API that may return a vast number of tweets. These tweets can be related to several different categories. This paper proposes a hierarchical clustering system that groups tweets into meaningful clusters based on cosine similarity score.
An improved OLSR routing protocol for reducing packet loss ratio in ad-hoc networks

Ad-hoc networks consist of collections of wireless mobile nodes. Due to mobility, there exists frequent link breakage, packet loss, and need for route discovery. OLSR is proactive routing protocol that is developed for mobile ad-hoc networks. OLSR reduces the network traffic by flooding control packets efficiently and reducing unnecessary and redundant control packets. OLSR reduces the overhead of control packets using a subset of one-hop neighbors called multipoint relays for flooding control packets. Although OLSR is dedicated for mobile ad-hoc networks, but mobility of nodes does not considered in MPR selection procedure. In this paper is assumed that some nodes are stationary and packet delivery rate of the OLSR routing protocol is improved by preventing mobile nodes from being selected as multipoint relay as much as is possible. Simulation results which are implemented on Visualsense simulator, demonstrate that our proposed method reduces the packet loss ratio and number of control packets and consequently increases lifetime of networks.
Foreign-language Reviews: Help or Hindrance?

The number and quality of user reviews greatly affects consumer purchasing decisions. While reviews in all languages are increasing, it is still often the case (especially for non-English speakers) that there are only a few reviews in a person's first language. Using an online experiment, we examine the value that potential purchasers receive from interfaces showing additional reviews in a second language. The results paint a complicated picture with both positive and negative reactions to the inclusion of foreign-language reviews. Roughly 26-28% of subjects clicked to see translations of the foreign-language content when given the opportunity, and those who did so were more likely to select the product with foreign-language reviews than those who did not.
Socio-cultural influences on vehicle defects in the Omani heavy vehicle industry

With recent economic growth in Oman there is increased use of heavy vehicles, presenting an increase in heavy vehicle crashes, associated fatalities and injuries. Vehicle defects cause a significant number of heavy vehicle crashes in Oman and increase the likelihood of fatalities. The aim of this study is to explore factors contributing to driving with vehicle defects in the Omani heavy vehicle industry. A series of qualitative participants observations were conducted in Oman with 49 drivers. These observations also involved discussion and interviews with drivers. The observations occurred at two road-side locations where heavy vehicle drivers gather for eating, resting, vehicle check-up, etc. Data collection was conducted over a three week period. The data was analysed using thematic analysis. A broad number of factors were identified as contributing to the driving of vehicles with defects. Participants indicated that tyres and vehicle mechanical faults were a common issue in the heavy vehicle industry. Participants regularly reported that their companies use cheap, poor quality standards parts and conducted minimal maintenance. Drivers also indicated that they felt powerless to resist company pressure to drive vehicles with known faults. In addition, drivers reported that traffic police were generally in effective and lacked skill to appropriately conduct roadside inspection on trucks. Further, participants stated that it was possible for companies to avoid being fined during annual or roadside vehicle inspections if members of the company knew the traffic police officer conducting the inspection. Moreover, fines issued by police are generally directed to the individual driver rather than being applied to the company, thus providing no incentive for companies to address vehicle faults. The implications of the findings are discussed.
The Impact of Specific Viruses on Clinical Outcome in Children Presenting with Acute Heart Failure

The presence and type of viral genomes have been suggested as the main etiology for inflammatory dilated cardiomyopathy. Information on the clinical implication of this finding in a large population of children is lacking. We evaluated the prevalence, type, and clinical impact of specific viral genomes in endomyocardial biopsies (EMB) collected between 2001 and 2013 among 63 children admitted to our hospital for acute heart failure (median age 2.8 years). Viral genome was searched by polymerase chain reaction (PCR). Patients underwent a complete two-dimensional echocardiographic examination at hospital admission and at discharge and were followed-up for 10 years. Twenty-seven adverse events (7 deaths and 20 cardiac transplantations) occurred during the follow-up. Viral genome was amplified in 19/63 biopsies (35%); PVB19 was the most commonly isolated virus. Presence of specific viral genome was associated with a significant recovery in ejection fraction, compared to patients without viral evidence (p < 0.05). In Cox-regression analysis, higher survival rate was related to virus-positive biopsies (p < 0.05). When comparing long-term prognosis among different viral groups, a trend towards better prognosis was observed in the presence of isolated Parvovirus B19 (PVB19) (p = 0.07). In our series, presence of a virus-positive EMB (mainly PVB19) was associated with improvement over time in cardiac function and better long-term prognosis.
Mathematical Modeling of Permanent Magnet Brushless DC Motor for Electric Scooter

Permanent magnet brushless dc (PMBLDC) motors are successfully developed to find the wide application in low power automotives due to high efficiency, silent operation, compact size, lower maintenance and high reliability. Due to the advancement in power electronics, PM Brushless dc motors have become potential drive for automotive applications. This paper mainly deals on simulation using Mat lab / Simulink for mathematical model of the PMBLDC motor for electric scooter application. The steady state and transient models of PMBLDC motor is analyzed for efficient performance of control. The transfer function of the motor is derived to arrive at the stability of the motor. The communication system and network topology of the motor drive is discussed and presented.
Quantifying the Summertime Response of the Austral Jet Stream and Hadley Cell to Stratospheric Ozone and Greenhouse Gases

AbstractThe impact of anthropogenic forcing on the summertime austral circulation is assessed across three climate model datasets: the Chemistry–Climate Model Validation activity 2 and phases 3 and 5 of the Coupled Model Intercomparison Project. Changes in stratospheric ozone and greenhouse gases impact the Southern Hemisphere in this season, and a simple framework based on temperature trends in the lower polar stratosphere and upper tropical troposphere is developed to separate their effects. It suggests that shifts in the jet stream and Hadley cell are driven by changes in the upper-troposphere–lower-stratosphere temperature gradient. The mean response is comparable in the three datasets; ozone has chiefly caused the poleward shift observed in recent decades, while ozone and greenhouse gases largely offset each other in the future.The multimodel mean perspective, however, masks considerable spread in individual models’ circulation projections. Spread resulting from differences in temperature trends is s.
Portability of STDL on Top of the TUXEDO Transaction Monitor

The Structured Transaction Definition Language (STDL) is a language based programming interface to transactional protocols and runtime systems, designed to resolve the industry problem of incompatible Transaction Processing (TP) monitor programming interfaces. STDL defines a three-group model, in which application procedures are grouped according to the type of work they perform: presentation, transactional flow control and error handling, and data access. A separate interface definition is created for each group of procedures and one procedure calls another procedure via this interface. STDL does not define protocol for the procedure calls except for remote task calls, which use the X/Open TxRPC protocol or DCE. Some existing TP monitors do not use TxRPC to invoke remote service but other protocols, such the Application Transaction Manager Interface (ATMI), the Common Programming Interface for Communication (CPI-C), or even CORBA/OTS in an object environment. This paper describes an STDL compiler on top of the TUXEDO monitor, translating STDL applications into XATMI client/server applications, supported by TUXEDO. Then it illustrates the possibility provided by STDL to achieve interoperability through TP platforms.
Efficient Dissemination Techniques for MANET Routing Control Messages

The challenges of optimal flooding of network control messages in Mobile Ad-Hoc Network (MANET) have been well studied in the literature [2]-[10] and [12]-[19]. A particular case of this problem is encountered in MANET routing protocols, which need to distribute routing control information to all member nodes as efficiently as possible. While both proactive and reactive MANET routing protocols exist, in some environments a proactive approach will be used to reduce communications latency as much as possible. Even in a hybrid protocol, the proactive portion requires some amount of information exchange among all nodes. Many previous papers have discussed optimal flooding in a variety of environments under a variety of assumptions, but none have assessed the performance of a recently developed cluster based routing protocol called Adaptive Hybrid Domain Routing (AHDR). In this paper, the optimal flooding architecture developed for the clustered based AHDR protocol is discussed in detailed. The paper also compares AHDR's flooding architecture against two prominent MANET routing protocols, OLSR [3] and OSPFMDR [11]. The paper also shows simulation results for each of the flooding architectures using an unbiased and non-intrusive monitoring technique. The performance results show that AHDR's flooding architecture imposes lower overhead control traffic as compared to OLSR and OSPF-MANET-MDR while still providing better network reachability.
Research and latest development of Ping-Pong robot player

Following a brief introduction of the state of arts as well as new progress on ping-pong robot player, this paper compares and analyzes the ping-pong robot players developed by several countries in vision system, control system and executive mechanisms in detail. Aiming at some existing problems during the development of ping-pong robot player, this paper provides some solutions to them and outlines a prospect of the future development of ping-pong robot in my view.
An Ontology-based Method for Sparsity Problem in Tag Recommendation

Tags or personal metadata for annotating web resources have been widely adopted in Web 2.0 sites. However, as tags are freely chosen by users, the vocabularies are diverse, ambiguous and sometimes only meaningful to individuals. Tag recommenders may assist users during tagging process. Its objective is to suggest relevant tags to use as well as to help consolidating vocabulary in the systems. In this paper we discuss our approach for providing personalized tag recommendation by making use of existing domain ontology generated from folksonomy. Specifically we evaluated the approach in sparse situation. The evaluation shows that the proposed ontology-based method has improved the accuracy of tag recommendation in this situation.
Dispositional Trust And Distrust Distinctions in Predicting High- and Low-Risk Internet Expert Advice Site Perceptions

This study examines whether some types of dispositional trust/distrust concepts are better than other types at inducing consumers to trust a Web advice provider. We propose and test a model in which dispositional trust and distrust concepts are given separate roles. This unique approach is based on the growing, but untested theoretical consensus that trust and distrust are separate concepts that co-exist yet differ in terms of their emotional makeup. While trust concepts tend to be calm and collected, distrust concepts embody significant levels of fear and insecurity. Based on this difference, we propose that dispositional distrust concepts will be better predictors of high-risk Internet legal advice site perceptions, while the corresponding trust concepts will be better predictors of low-risk Internet legal advice site perceptions. As proposed, the study finds that dispositional trust better predicts low-risk perceptions, while dispositional distrust better predicts high-risk perceptions. For e-commerce advice site research, the findings of this article suggest that perhaps scholars should Not only study dispositional trust but also dispositional distrust.
The heparin binding 25 kDa fragment of thrombospondin‐1 promotes angiogenesis and modulates gelatinase and TIMP‐2 production in endothelial cells

The hypothesis that thrombospondin‐1 (TSP‐1) can exert opposite effects on angiogenesis depending on the functional status of its domains/fragments was investigated. In the rabbit cornea, TSP‐1 inhibited angiogenesis induced by fibroblast growth factor‐2 (FGF‐2). However, when tested per se, TSP‐1 was able to elicit an angiogenic response comparable to that induced by FGF‐2. Induction of angiogenesis was dose‐dependent (20 ng ‐ 2 μg/pellet), was prevented by anti‐TSP antibodies or by heat‐inactivation of TSP‐1, and was not due to inflammatory mediators, to FGF‐2 or to TGF‐β. Equimolar concentrations of the 25 kDa heparin binding fragment of TSP‐1 were even more efficient than the whole molecule, and promoted the angiogenic activity of FGF‐2. On the contrary, the 140 kDa fragment of TSP‐1 did not induce angiogenesis and turned off the angiogenic response to FGF‐2. The 25 kDa fragment and TSP‐1, but not the 140 kDa fragment, increased endothelial cell invasiveness and stimulated the production and activation of matrix metalloproteinase‐2 (MMP‐2). Moreover, the 25 kDa fragment reduced the synthesis of the MMP‐2 inhibitor TIMP‐2, while the 140 kDa fragment caused a twofold increase in TIMP‐2 production and inhibited MMPs stimulation by TSP‐1 and FGF‐2. We conclude that TSP‐1 is a source of smaller mediators of angiogenesis, which affect in an opposite way endothelial cell functions and proteolytic activity, thus resulting in an opposite final effect on angiogenesis.
Further validation of actigraphy for sleep studies.

STUDY OBJECTIVES Actigraphy is generally compared to polysomnography (PSG), which has been considered the gold standard for sleep studies. The objective of the present study was to evaluate the concordance between PSG and two previously proposed algorithms (Cole et al, 1992; Sadeh et al, 1994) to analyze actigraphic recordings. The minute-by-minute agreement rate was evaluated through calculation of sensitivity, specificity, and accuracy. Regarding the sleep parameters, the concordance was performed through the Bland and Altman technique. DESIGN A night of adaptation to the sleep laboratory followed by simultaneous polysomnographic and actigraphic recordings throughout the night. PARTICIPANTS 21 healthy volunteers. SETTING A sleep laboratory INTERVENTIONS None. RESULTS Ninety-one percent of all PSG epochs were correctly identified by both algorithms, and this accuracy is reasonably satisfactory. The actigraphy was a sensitive method, with values of 99% and 97% for Cole's and Sadeh's algorithms, respectively. However, actigraphy had a low specificity: 34% and 44% for Cole's and Sadeh's algorithms, respectively. The Bland and Altman technique showed that actigraphy systematically overestimated Sleep Latency, Total Sleep Time and Sleep Efficiency while it underestimated Intermittent Awakenings. CONCLUSIONS The results of this study show the utility of actigraphy as a useful method for assessment of sleep, despite its limitations regarding identification of waking epochs during sleep. The Bland and Altman concordance technique was revealed to be a powerful tool to evaluate how well actigraphy agreed with polysomnography. This technique, combined with calculations of sensitivity and specificity, appears to be the most adequate procedure for the assessment of concordance.
A GALOIS CORRESPONDENCE FOR II 1 FACTORS AND QUANTUM GROUPOIDS

We establish a Galois correspondence for finite quantum groupoid actions on II1 factors and show that every finite index and finite depth subfactor is an intermediate subalgebra of a quantum groupoid crossed product. Moreover, any such a subfactor is completely and canonically determined by a quantum groupoid and its coideal ∗-subalgebra. This allows to express the bimodule category of a subfactor in terms of the representation category of a corresponding quantum groupoid and the principal graph as the Bratteli diagram of an inclusion of certain C � -algebras related to it.
A Parallel Minimum Attribute Co-reduction Accelerator based on Quantum-inspired SFLA and MapReduce Framework

The fast increase and update of big data brings a new challenge to quickly acquire the useful information with classical attribute reduction methods. In this paper, a parallel minimum attribute co-reduction accelerator (QSMFAC) based on quantum-inspired SFLA and MapReduce framework is presented. First, a novel framework of N-populations distributed co-evolutionary cloud model is designed to divide the entire population into N subpopulations and share the rewards of different subpopulations’ solutions under MapReduce mechanism. Second, the divided attribute subsets in subpopulations are coevolved by quantum-inspired SFLA in which evolutionary frogs are represented by quantum chromosome gene state, and the crossover co-evolutionary strategy between neighborhood subpopulations can adapt the consecutive sharing of better performance. Third, the MapReduce based approximation parallelism mechanism is adopted to conduct rules reduction to speed up the computation of attribute equivalence classes, so that it will be extended to high performance in both quality of solution and competitive computation complexity. Experimental results indicate the proposed accelerator has better on efficiency and accuracy of minimum attribute reduction than some representative algorithms. Moreover it is applied into MRI segmentation with intensity inhomogeneity, and the effective and robust segmentation results further indicate it has stronger superior for complex big data application.
Analysis of Networked Control Systems with Communication Constraints

The problem of networked control systems (NCSs) with node device acting over a limited communication channel is investigated. We are particularly interested in the case where the plant measurement and controller output are both split into different packets and only one packet of each can be transmitted at a time. Stability of multiple-packet transmission NCSs with delays is closely related to asynchronous dynamical systems. Sufficient conditions on stability of the NCSs are presented. Finally, a numerical example is given to show the efficiency and feasibility of our proposed approach