Miracle-dz/UniFAR-FTUs huggingface dataset:
Arrangement Graph-Based Overlay with Replica Mechanism for File Sharing

Over the past decade, the development of Internet technology has led to more awareness on the powerfulness of Peer-to-Peer (P2P) overlay network. How to efficiently establish or maintain overlay networks in large-scale environments always are important issues. Besides, the ways of improving routing efficiency also attract much attention. This study proposes a replica mechanism based on the Arrangement Graph-based Overlay (AGO), and enhances the joining procedures of the AGO. Enhanced AGO reduces system overhead by reducing large number of polling messages of the joining process. In addition, replica mechanism is also integrated into the enhanced AGO to buttress the efficiency of the searching algorithm. Experimental results of the enhanced AGO have demonstrated that efficient routing as well as less bandwidth consumption during communication can be realized.
Reconstruction+Synthesis: A Hybrid Method for Multi-Frame Super-Resolution

In this paper a new method for multi-frame Super-Resolution is proposed. Having a low resolution(LR) video and a few high resolution(HR) images from a speciflc scene is frequently occurred. In addition it is usual that between images and video frames there is some difierences, because of difierent of exposure time, moving objects, camera movement and so on. In the proposed method a Super-Resolution reconstruction method, applies on low-resolution frames for producing a reconstructed HR image. After that a synthesized image with mapping the high resolution training image to the reconstruction result, is produced using a proper transformation model. Fusion of the synthesized image with the reconstruction result makes the flnal desired HR image of the given LR frames. Experimental results show that our approach is competitive both for quality and quantity with some famous super-resolution methods.
Steady Models of Optically Thin, Magnetically Supported Black Hole Accretion Disks

We obtained steady solutions of optically thin, single-temperature, magnetized black hole accretion disks, assuming thermal bremsstrahlung cooling. Based on the results of 3D MHD simulations of accretion disks, we assumed that the magnetic fields inside the disk are turbulent and dominated by an azimuthal component. We decomposed the magnetic fields into an azimuthally averaged mean field and fluctuating fields. We also assumed that the azimuthally averaged Maxwel ls tress i sp roportional to the total pressure. The radial advection rate of the azimuthal magnetic flux, P Φ ,i s prescribed as being proportional to $ � � ,w here$ is the radial coordinate
Detecting Real Money Traders in MMORPG by Using Trading Network

We have developed a method for detecting real money traders (RMTers) to support the operators of massively multiplayer online role-playing games (MMORPGs). RMTers, who earn currency in the real world by selling properties in the virtual world, tend to form alliances and frequently exchange a huge volume of virtual currency within such a community. The proposed method exploits (1) the trading network, to identify the communities of characters, and (2) the volume of trades, to estimate the likelihood of communities and characters becoming engaged in real money trading. The results of an experiment using actual log data from a commercial MMORPG showed that using the trading network is more effective in detecting RMTers than conventional machine learning methods that assess individual character without referring to the trading network.
Enhanced bio-inspired feature extraction for embedded application

In this paper, we propose an algorithm called Hessian ORB — Overlapped FREAK (HOOFR) to attack the feature matching problem in image processing. Our algorithm is based on the combination of the ORB detector and the FREAK bio-inspired descriptor. We address some modifications related to the detection and the description processes in order to enhance HOOFR reliability, speed and memory fingerprint. The experiments on a widely used dataset demonstrate the considerable performance of HOOFR compared to SIFT, SURF or ORB in terms of the execution time and the matching quality for various matching contexts. Moreover, the performance is also tested by integrating HOOFR in object-tracking application on ODROID-XU4 platform, presenting a high potential of its implementation on embedded systems.
A new “culture war”?

1. https://www.arts. gov/sites/default/files/nea-quick-facts.pdf. 2. http://www.americansforthearts. org/sites/default/files/images/2016/research/public_op_poll/ POP_FullReport_July11. pdf. 3. https://www.arts. gov/sites/default/files/2012-sppa-feb2015.pdf. 4. https://www.arts. gov/sites/default/files/how-the-us-funds-the-arts.pdf. 5. https://www.whitehouse.gov/sites/whitehouse.gov/files/omb/budget/fy2018/msar.pdf. 6. http://www.artsindexusa. org/2016-national-arts-index. 7. http://www.cacgrants. org/about-us.
Staff Perceptions of Risk for Prison Rape Perpetration and Victimization

Since the inception of the Prison Rape Elimination Act in 2003, increased attention has been directed toward identifying and eliminating acts of institutional sexual violence. However, few empirical studies have systematically explored risk factors that staff perceive as important when ascertaining risk for prison sexual perpetration and victimization. This study examined ratings from 10 staff for 315 female and 1,842 male inmates screened for admission to correctional facilities in a Midwestern state. Overall, findings indicate that a low proportion of inmates were rated medium–high risk for either perpetration or victimization. In addition, results suggest that staff perceived risk factors for sexual violence somewhat differently for female and male inmates. Furthermore, data revealed that staff considered presentation characteristics more relevant than empirically derived risk factors when determining vulnerability to prison rape. Implications for institutional policy and prison sexual assault screening are discussed.
Multi-resolution Modeling of Complex and Detailed Cultural Heritage

The article reports the interdisciplinary project of the virtualization of the Great Inscription of Gortyna (Crete) for 3D documentation, structural studies and physical replica purposes. The digitization of the longest epigraphic text of the Greek civilization (6 m long and 1.75 m high, with ca 2-3 mm depth engraved letters) and its surrounding heritage area (ca 30 x 30 m), required a long planning and the construction of a dedicated acquisition system to speed up the surveying time, limited to few hours per day. Primarily range sensors were employed in a multi-resolution way, digitizing detailed parts in highresolution and less smoothed areas with lower geometric resolution. Some selected areas were also modeled with our multi-photo geometrically constrained image matching approach to demonstrate that the same accuracy and details can be achieved using either scanners or photogrammetry. The derived 3D model of the heritage is now the basis for further archaeological studies on the incision techniques and a deeper structural analysis on the monument. The challenges of the work stay in the acquisition, processing and integration of the multi-resolution data as well as their visualization.
Fitness dynamics within a poplar hybrid zone: II. Impact of exotic sex on native poplars in an urban jungle

Trees bearing novel or exotic gene components are poised to contribute to the bioeconomy for a variety of purposes such as bioenergy production, phytoremediation, and carbon sequestration within the forestry sector, but sustainable release of trees with novel traits in large-scale plantations requires the quantification of risks posed to native tree populations. Over the last century, exotic hybrid poplars produced through artificial crosses were planted throughout eastern Canada as ornamentals or windbreaks and these exotics provide a proxy by which to examine the fitness of exotic poplar traits within the natural environment to assess risk of exotic gene escape, establishment, and spread into native gene pools. We assessed postzygotic fitness traits of native and exotic poplars within a naturally regenerated stand in eastern Canada (Quebec City, QC). Pure natives (P. balsamifera and P. deltoides spp. deltoides), native hybrids (P. deltoides × P. balsamifera), and exotic hybrids (trees bearing Populus nigra and P. maximowiczii genetic components) were screened for reproductive biomass, yield, seed germination, and fungal disease susceptibility. Exotic hybrids expressed fitness traits intermediate to pure species and were not significantly different from native hybrids. They formed fully viable seed and backcrossed predominantly with P. balsamifera. These data show that exotic hybrids were not unfit and were capable of establishing and competing within the native stand. Future research will seek to examine the impact of exotic gene regions on associated biotic communities to fully quantify the risk exotic poplars pose to native poplar forests.
‘Getting our spirits out’, letting youth spirits and life worlds into the classroom through youth radio arts for transnational students

ABSTRACT This paper analyses the cultural practices that were introduced in a radio improv class on the first day of Youth Radio Arts for immigrant students, and how these practices served as resources to mediate students’ understanding of, and realisation of ‘voice’ over time. The theory-method combines insights from interactional ethnography and postmodern approaches to multilingual language ecologies. The analysis focuses on speech body play, parody, and embodied expression as salient dimensions of interactions with the radio improv mentor that found echoes in student reflections at the end of the year regarding the purpose of the programme and the meanings of voice and communication. The analysis of interactions from the first day together with ethnographic records from across the year, revealed the importance of taking into account the subjective and affective dimension of language, embodied perceptions, and cultural memory in multilingual settings constituted by transnational students.
Written corrective feedback from sociocultural theoretical perspectives: A research agenda

Using key constructs from sociocultural theory and activity theory, this paper outlines three broad areas of future research on written corrective feedback (WCF) that may be of interest to second language (L2) researchers and practitioners. The first area uses the constructs of the Zone of Proximal Development (ZPD) and scaffolding to assess the nature and appropriateness of the feedback provided. The second area uses the construct of tools and considers learners’ responses to the means used to provide WCF, including automated feedback. The third, and perhaps most important area, views WCF as an activity, and examines context-related and individual factors that impact on the provision and response to WCF. The paper provides concrete examples of small-scale longitudinal studies in each of these areas, including recommendations as to the kind of data and measures to employ.
Exploiting Annotations to Test Break-off Branches

Programs often contain branches to break off from their main execution. These branches contribute to the total cost of testing, because they also need to be tested. The paper presents a new approach to improve the testing of such branches by annotating them. Our tool automatically generates test-sequences. Then, invariants in the form of pre-and post-condition over the executions passing each annotated branch are dynamically inferred, and reported to the programmer for inspection. Contradiction with the programmer's assumption on what the behavior should be indicates a bug. As invariants, a certain class of simple expressions are proposed, which are discriminative enough for testing break-off behavior, while keeping their amount feasible for inspection.
Beneficial effects of Ginkgo biloba extract on insulin signaling cascade, dyslipidemia, and body adiposity of diet-induced obese rats

Ginkgo biloba extract (GbE) has been indicated as an efficient medicine for the treatment of diabetes mellitus type 2. It remains unclear if its effects are due to an improvement of the insulin signaling cascade, especially in obese subjects. The aim of the present study was to evaluate the effect of GbE on insulin tolerance, food intake, body adiposity, lipid profile, fasting insulin, and muscle levels of insulin receptor substrate 1 (IRS-1), protein tyrosine phosphatase 1B (PTP-1B), and protein kinase B (Akt), as well as Akt phosphorylation, in diet-induced obese rats. Rats were fed with a high-fat diet (HFD) or a normal fat diet (NFD) for 8 weeks. After that, the HFD group was divided into two groups: rats gavaged with a saline vehicle (HFD+V), and rats gavaged with 500 mg/kg of GbE diluted in the saline vehicle (HFD+Gb). NFD rats were gavaged with the saline vehicle only. At the end of the treatment, the rats were anesthetized, insulin was injected into the portal vein, and after 90s, the gastrocnemius muscle was removed. The quantification of IRS-1, Akt, and Akt phosphorylation was performed using Western blotting. Serum levels of fasting insulin and glucose, triacylglycerols and total cholesterol, and LDL and HDL fractions were measured. An insulin tolerance test was also performed. Ingestion of a hyperlipidic diet promoted loss of insulin sensitivity and also resulted in a significant increase in body adiposity, plasma triacylglycerol, and glucose levels. In addition, GbE treatment significantly reduced food intake and body adiposity while it protected against hyperglycemia and dyslipidemia in diet-induced obesity rats. It also enhanced insulin sensitivity in comparison to HFD+V rats, while it restored insulin-induced Akt phosphorylation, increased IRS-1, and reduced PTP-1B levels in gastrocnemius muscle. The present findings suggest that G. biloba might be efficient in preventing and treating obesity-induced insulin signaling impairment.
RACCOOM: A Rate-Based Congestion Control Scheme for Multicasts

As continuous media multicast applications become widely deployed on the Internet, it becomes increasingly important to ensure these applications respond to network congestion in a TCP-friendly manner so as to coexist with TCP ows (which constitutes the majority of the Internet traac). In this paper, we present a RAte-based Congestion COntrOl scheme for Multicasts, called RAC-COOM. In the absence of packet loss, a RACCOOM session keeps track of the congestion status of the on-tree path with the largest round trip time (RTT), and adjusts its sending rate using a TCP Vegas-like method. Upon packet loss (anywhere in the multicast tree), RACCOOM then responds by reducing its sending rate by half in a TCP Reno-like manner. The acknowledgment aggregation method used in RACCOOM is judiciously designed to prevent ACK explosion and yet provide the sender with a simple but comprehensive view of congestion conditions in the multicast tree. Through analysis using control theory and simulation study in ns-2, we show that RACCOOM is TCP-friendly, can achieve (weighted) fair bandwidth sharing among competing ows, and can handle background traac change and member join/leave. These features, coupled with the fact that all the RACCOOM operations, except acknowledgment aggregation (which requires minor router support), are performed at the end hosts, suggest that RACCOOM is a simple yet practical solution for rate-based multicast congestion control. Any opinions, ndings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reeect the views of the funding agency.
On-Line Selectivity Estimation for XML Path Expressions using Markov Histograms

The extensible mark-up language (XML) is gaining widespread use as a format for data exchange and storage on the World Wide Web. Queries over XML data require accurate selectivity estimation of path expressions in order to optimize query execution plans. Selectivity estimation of XML path expression is usually done based on summary statistics about the structure of the underlying XML repository. All previous methods require an o-line scan of the XML repository to collect the statistics. In this paper, we propose XPathLearner 4 , a method for estimating selectivity of the most commonly used types of path expressions without looking at the XML data. XPathLearner gathers and refines the required statistics using query feedback in an on-line manner and is especially suited to queries in Internet scale applications since the underlying XML repository is either inaccessible or too large to be scanned in its entirety. Besides the on-line property, our method also has two other novel features: (a) XPathLearner is workload aware in collecting the statistics and thus can be more accurate than the more costly o-line method under tight memory constraints, and (b) XPathLearner automatically adjusts the statistics using query feedback when the underlying XML data change. We show empirically the estimation accuracy of our method using the XMark synthetic data set and several real data sets.
Regional Estimation of Total Recharge to Ground Water in Nebraska

Naturally occurring long‐term mean annual recharge to ground water in Nebraska was estimated by a novel water‐balance approach. This approach uses geographic information systems (GIS) layers of land cover, elevation of land and ground water surfaces, base recharge, and the recharge potential in combination with monthly climatic data. Long‐term mean recharge > 140 mm per year was estimated in eastern Nebraska, having the highest annual precipitation rates within the state, along the Elkhorn, Platte, Missouri, and Big Nemaha River valleys where ground water is very close to the surface. Similarly high recharge values were obtained for the Sand Hills sections of the North and Middle Loup, as well as Cedar River and Beaver Creek valleys due to high infiltration rates of the sandy soil in the area. The westernmost and southwesternmost parts of the state were estimated to typically receive < 30 mm of recharge a year.
Testing Product States, Quantum Merlin-Arthur Games and Tensor Optimization

We give a test that can distinguish efficiently between product states of n quantum systems and states that are far from product. If applied to a state |ψ⟩ whose maximum overlap with a product state is 1 − ε, the test passes with probability 1 − Θ(ε), regardless of n or the local dimensions of the individual systems. The test uses two copies of |ψ⟩. We prove correctness of this test as a special case of a more general result regarding stability of maximum output purity of the depolarizing channel. A key application of the test is to quantum Merlin-Arthur games with multiple Merlins, where we obtain several structural results that had been previously conjectured, including the fact that efficient soundness amplification is possible and that two Merlins can simulate many Merlins: QMA(k) = QMA(2) for k ≥ 2. Building on a previous result of Aaronson et al., this implies that there is an efficient quantum algorithm to verify 3-SAT with constant soundness, given two unentangled proofs of Õ(√n) qubits. We also show how QMA(2) with log-sized proofs is equivalent to a large number of problems, some related to quantum information (such as testing separability of mixed states) as well as problems without any apparent connection to quantum mechanics (such as computing injective tensor norms of 3-index tensors). As a consequence, we obtain many hardness-of-approximation results, as well as potential algorithmic applications of methods for approximating QMA(2) acceptance probabilities. Finally, our test can also be used to construct an efficient test for determining whether a unitary operator is a tensor product, which is a generalization of classical linearity testing.
Trimming CFG Parse Trees for Sentence Compression Using Machine Learning Approaches

Sentence compression is a task of creating a short grammatical sentence by removing extraneous words or phrases from an original sentence while preserving its meaning. Existing methods learn statistics on trimming context-free grammar (CFG) rules. However, these methods sometimes eliminate the original meaning by incorrectly removing important parts of sentences, because trimming probabilities only depend on parents' and daughters' non-terminals in applied CFG rules. We apply a maximum entropy model to the above method. Our method can easily include various features, for example, other parts of a parse tree or words the sentences contain. We evaluated the method using manually compressed sentences and human judgments. We found that our method produced more grammatical and informative compressed sentences than other methods.
Reconstruction of portal vein and superior mesenteric vein after extensive resection for pancreatic cancer

Purpose Tumor invasion to the portal vein (PV) or superior mesenteric vein (SMV) can be encountered during the surgery for pancreatic cancer. Venous reconstruction is required, but the optimal surgical methods and conduits remain in controversies. Methods From January 2007 to July 2012, 16 venous reconstructions were performed during surgery for pancreatic cancer in 14 patients. We analyzed the methods, conduits, graft patency, and patient survival. Results The involved veins were 14 SMVs and 2 PVs. The operative methods included resection and end-to-end anastomosis in 7 patients, wedge resection with venoplasty in 2 patients, bovine patch repair in 3 patients, and interposition graft with bovine patch in 1 patient. In one patient with a failed interposition graft with great saphenous vein (GSV), the SMV was reconstructed with a prosthetic interposition graft, which was revised with a spiral graft of GSV. Vascular morbidity occurred in 4 cases; occlusion of an interposition graft with GSV or polytetrafluoroethylene, segmental thrombosis and stenosis of the SMV after end-to-end anastomosis. Patency was maintained in patients with bovine patch angioplasty and spiral vein grafts. With mean follow-up of 9.8 months, the 6- and 12-month death-censored graft survival rates were both 81.3%. Conclusion Many of the involved vein segments were repaired primarily. When tension-free anastomosis is impossible, the spiral grafts with GSV or bovine patch grafts are good options to overcome the size mismatch between autologous vein graft and portomesenteric veins. Further follow-up of these patients is needed to demonstrate long-term patency.
A realization of a below-1-V operational and 30-MS/s sample-and-hold IC with a 56-dB signal-to-noise ratio by applying the current-based circuit approach

This paper demonstrates the low-voltage and low-power operation of a MOS sample-and-hold circuit while preserving speed and accuracy, aiming at the realization of a pipelined low-voltage and low-power analog-to-digital converter on a system large-scale integrated circuit. It was fabricated by utilizing 0.35-/spl mu/m CMOS technology. The main feature of this circuit is that all the input, signals, and output are in the current form. The circuit consists of simple current mirrors. In order to eliminate the signal-dependent current transfer ratio error, voltages at the drain terminals of mirror transistors are fixed as constant. A source degeneration resistor, which is a transistor in the triode operational region, is connected to a mirror transistor in order to alleviate the influence of the threshold and transconductance parameter variations. Control signals are boosted in voltage and applied to the gate of switch NMOS transistors in the signal path in order to reduce the on-resistance of analog switches. A differential configuration is adopted throughout the entire circuit and effectively cancels switch feedthrough errors. As a result, a 30-MS/s operation with a signal-to-noise ratio (SNR) of 56 dB from a 1-V supply has been achieved, when the input current is /spl plusmn/200 /spl mu/A. The chip even operated down to 0.85 V with a 20-MHz clock. The SNR was measured as 50 dB with an input current of /spl plusmn/100 /spl mu/A.