Miracle-dz/UniFAR-FTUs huggingface dataset:
Answer Aggregation for Keyword Search over Relational Databases

with the amount of text data stored in relational databases growing rapidly, the need of the user to search such information is dramatically going up. Many existing approaches focus on finding a tuple matching a keyword query and return the result as a joining network of tuples of one or more tables. In this paper, we formulate an answer aggregation of keyword search over relational databases problem which merges related joining tuples from multiple tables to a single tuple to reduce redundancy in the results and improve the search quality. We developed an approach which exploits the tuple identity information for merging tuples rather than scanning throughout the results to find the common values. We further proposed a pruning algorithm which greatly reduces the number of redundant results after merging. We have conducted experiments extensively on two well-known databases (DBLP and IMDB). The experimental results show that the number of tuples in the results was dramatically reduced which noticeably improved the search quality while the merging time and the pruning time were relatively low when compared to the searching time.
Strontium promotes calcium oscillations in mouse meiotic oocytes and early embryos through InsP3 receptors, and requires activation of phospholipase and the synergistic action of InsP3.

BACKGROUND Sr2+ is the most efficient agent for mouse oocyte activation and functions by inducing Ca2+ oscillations. However, its specific mechanism of action remains unknown. Here we investigated the specificity and possible mechanism of Sr2+-induced Ca2+ oscillations in mouse oocytes and early embryos. METHODS Ca2+ oscillations in oocytes and embryos were measured by ratiometric fluorescence imaging using fura-2AM. The role of phospholipase C (PLC) and inositol trisphosphate (InsP3) receptors in Sr2+-induced Ca2+ oscillations was examined by selective inhibitors. RESULTS Sr2+ can induce Ca2+ oscillations in both immature and mature oocytes, and in early embryos. A cell cycle stage-dependent phenomenon to Sr2+ stimulation was observed in 1-cell embryos. By using a low molecular weight heparin to antagonize the function of InsP3 receptors, we were able to show that InsP3 receptors are essential for Sr2+-induced Ca2+ oscillations. Treating metaphase II (MII) oocytes with the PLC inhibitor, U73122, abolished Sr2+-induced increases in Ca2+. This inhibitory effect of U73122 could be rescued by microinjection of InsP3, indicating that Sr2+-induced Ca2+ oscillations require the synergistic action of InsP3. CONCLUSIONS Sr2+-induced calcium oscillations in mouse oocytes and early embryos are mediated through InsP3 receptors, and require PLC activation and the synergistic action of InsP3.
Trends in the Development of Machinery and Associated Technology ” TMT 2006 , Barcelona-Lloret de Mar , Spain , 11-15 September , 2006 APPLICATION OF UML FOR OBJECT ORIENTED MODELLING OF CUSTOMIZED PRODUCT FAMILIES

The engineering design activity becomes extremely complex and is related to huge data volumes, intensive computer calculations and simulations. Hence adoption of new techniques and methods for model representation of the product, common for the systems and software engineers, which will provide a direct translation of the product model into a program code within early design stages, is an important issue. In this paper, the use of the object-oriented approach and Unified Modelling Language (UML) within product development process is examined. Some benefits related to the improving and reducing the design efforts and enhancing the product success in case of technical systems are outlined. An object oriented approach for development of product families of linear handling systems is presented.
The Impact of Hierarchies on the Architecture-Level Software Understandability - A Controlled Experiment

Architectural component models represent high level designs and are frequently used as a central view of architectural descriptions of software systems. They play a crucial role in the whole development process and in achieving the desired software qualities. This paper presents an empirical study that examines the impact of hierarchies on the architecture-level software understand ability. In particular we have studied three different architectural representations of a large-size software system, one with a hierarchical representation where architectural components at all abstraction levels in the hierarchy are shown, and two that do not contain hierarchical abstractions but concentrate only on the lowest level or on the highest level components in the hierarchy. We conducted a controlled experiment in which participants of three groups received one of the three architecture documentations plus the source code of the system and had to answer understand ability related questions. Our results show that using the hierarchical architecture leads to: 1) higher quantity of correctly retrieved elements, 2) lower quantity of incorrectly retrieved elements, and 3) higher overall quality of retrieved elements. The obtained results provide empirical evidence that hierarchies play an important role in the context of architectural component models from the viewpoint of the architecture-level software understandability.
Jobsite logistic simulation in mechanized tunneling

Projects in mechanized tunneling frequently do not reach their targeted production performance. Reasons are often related to an undersized or disturbed supply-chain management of the surface jobsite. Due to the sensitive interaction of production and logistic processes, planning and analyzing the supply-chain is a challenging task. Transparent evaluation of chosen logistic strategies or project setups can be achieved by application of process simulation. This paper presents the continued work of a simulation approach to analyze the complex system of mechanized tunneling. Special focus of this publication lies on the internal logistic as a part of the jobsite supply-chain. The generic implementation allows a flexible configuration of jobsite elements to compare possible setups. A case study demonstrates the approach and highlights the sensitive interaction of production and logistic processes under the influence of disturbances. Additionally, improvements to the original setup of the case study's construction equipment can be derived.
A nucleolar skeleton of protein filaments demonstrated in amplified nucleoli of Xenopus laevis

The amplified, extrachromosomal nucleoli of Xenopus oocytes contain a meshwork of approximately 4-nm-thick filaments, which are densely coiled into higher-order fibrils of diameter 30-40 nm and are resistant to treatment with high- and low-salt concentrations, nucleases (DNase I, pancreatic RNase, micrococcal nuclease), sulfhydryl agents, and various nonionic detergents. This filamentous "skeleton" has been prepared from manually isolated nuclear contents and nucleoli as well as from nucleoli isolated by fluorescence-activated particle sorting. The nucleolar skeletons are observed in light and electron microscopy and are characterized by ravels of filaments that are especially densely packed in the nucleolar cortex. DNA as well as RNA are not constituents of this structure, and precursors to ribosomal RNAs are completely removed from the extraction-resistant filaments by treatment with high-salt buffer or RNase. Fractions of isolated nucleolar skeletons show specific enrichment of an acidic major protein of 145,000 mol wt and an apparent pI value of approximately 6.15, accompanied in some preparations by various amounts of minor proteins. The demonstration of this skeletal structure in "free" extrachromosomal nucleoli excludes the problem of contaminations by nonnucleolar material such as perinucleolar heterochromatin normally encountered in studies of nucleoli from somatic cells. It is suggested that this insoluble protein filament complex forms a skeleton specific to the nucleolus proper that is different from other extraction-resistant components of the nucleus such as matrix and lamina and is involved in the spatial organization of the nucleolar chromatin and its transcriptional products.
You Can Type, but You Can't Hide: A Stealthy GPU-based Keylogger

Keyloggers are a prominent class of malware that harvests sensitive data by recording any typed in information. Keylogger implementations strive to hide their presence using rootkit-like techniques to evade detection by antivirus and other system protections. In this paper, we present a new approach for implementing a stealthy keylogger: we explore the possibility of leveraging the graphics card as an alternative environment for hosting the operation of a keylogger. The key idea behind our approach is to monitor the system’s keyboard buer directly from the GPU via DMA, without any hooks or modifications in the kernel’s code and data structures besides the page table. The evaluation of our prototype implementation shows that a GPU-based keylogger can eectively record all user keystrokes, store them in the memory space of the GPU, and even analyze the recorded data in-place, with negligible runtime overhead.
Testicular Sertoli cell function in male systemic lupus erythematosus.

OBJECTIVE To assess the testicular Sertoli cell function in male SLE patients. METHODS Thirty-four consecutive patients were prospectively selected to evaluate serum inhibin B. Clinical features, treatment, semen analysis, urological evaluation, testicular ultrasound, hormones and anti-sperm antibodies were determined. RESULTS Patients were subdivided into two groups: low serum inhibin B (Group 1, n = 8) and normal levels (Group 2, n = 26). The median sperm concentration (P = 0.024), total sperm count (P = 0.023) and total motile sperm count (P = 0.025) were lower in Group 1. Inhibin B levels were positively correlated with sperm concentration (r = 0.343), total motile sperm count (r = 0.357), and negatively correlated with follicule-stimulating hormone (FSH) (r = 0.699) and luteinizing hormone (r = 0.397). The median serum inhibin B was lower in SLE patients treated with intravenous cyclophosphamide (IVCYC) compared with those without this therapy (P = 0.031). Further evaluation of the 26 SLE patients with normal inhibin B and FSH levels revealed that medians of inhibin B/FSH ratio were lower in SLE patients with oligozoospermia compared with normozoospermia (P = 0.004). This ratio was also lower in SLE patients treated with IVCYC than those without this therapy (P = 0.04). In contrast, inhibin B serum level alone did not discriminate the later group of patients (P = 0.12). CONCLUSIONS This is the first study to identify a high frequency of testicular Sertoli cell dysfunction in male SLE associated with semen abnormalities. Further prospective studies are necessary to determine if inhibin levels and inhibin B/FSH ratio will be an earlier and useful marker of IVCYC toxicity in these patients.
Characteristics of Cohabitating Families Cohabitation in New York State Figure 2. Percent of Total Families with opposite Sex Unmarried Partners, in New York State Counties Characteristics of Cohabiting Parents

The increase in cohabitation in recent years has led researchers to examine the needs and characteristics of parents and children in such families. A cohabiting family is defined as two unrelated adults of the opposite sex who share a housing unit, either with or without children. The number of households of this type is on the rise, and in 2002 there were 4.2 million cohabiting households in the U.S., compared with 2.9 million in 1996 (U.S. Census Bureau, 2003). This represents an increase of almost 45% in a six-year period.
Multi-Level Encryption Framework

Multi-level encryption approaches are becoming more popular as they combine the strength of multiple basic/traditional approaches into a complex one. Many multi-level encryption approaches have been introduced for different systems, like Internet of Things, sensor networks, big data, and the web. The main obstacles in building such approaches are to have a secure as well as a computationally efficient multi-level encryption approach. In this paper, we propose a computationally efficient multi-level encryption framework that combines the strength of symmetric, the encryption algorithm AES (Advance Encryption Standard), Feistel network, Genetic Algorithm’s Crossover and Mutation techniques, and HMAC. The framework was evaluated and compared to a set of benchmark symmetric encryption algorithms, such as RC5, DES, and 3-DES. The evaluation was carried out on an identical platform and the algorithms were compared using the throughput and running time performance metrics and Avalanche effect security metric. The results show that the proposed framework can achieve the highest throughput and the lowest running time compared to the considered benchmarked symmetric encryption algorithms and passes the avalanche effect criterion.
Outage probability analysis of spectrum sharing systems in small cell networks

In the spectrum sharing systems, the exact closed-form expression of the outage probability is derived using the moment generating function of aggregate interference. It is assumed that the secondary users have different transmission characteristics, such as, transmission power, path loss exponent, etc. It is observed that the analytical results are well matched with the simulated results.
Abolishing the effect of reinforcement delay on human causal learning

Associative learning theory postulates two main determinants for human causal learning: contingency and contiguity. In line with such an account, participants in Shanks, Pearson, and Dickinson (1989) failed to discover causal relations involving delays of more than two seconds. More recent research has shown that the impact of contiguity and delay is mediated by prior knowledge about the timeframe of the causal relation in question. Buehner and May (2002, 2003) demonstrated that the detrimental effect of delay can be significantly reduced if reasoners are aware of potential delays. Here we demonstrate for the first time that the negative influence of delay can be abolished completely by a subtle change in the experimental instructions. Temporal contiguity is thus not essential for human causal learning.
Monte-Carlo simulation balancing

In this paper we introduce the first algorithms for efficiently learning a simulation policy for Monte-Carlo search. Our main idea is to optimise the balance of a simulation policy, so that an accurate spread of simulation outcomes is maintained, rather than optimising the direct strength of the simulation policy. We develop two algorithms for balancing a simulation policy by gradient descent. The first algorithm optimises the balance of complete simulations, using a policy gradient algorithm; whereas the second algorithm optimises the balance over every two steps of simulation. We compare our algorithms to reinforcement learning and supervised learning algorithms for maximising the strength of the simulation policy. We test each algorithm in the domain of 5 x 5 and 6 x 6 Computer Go, using a softmax policy that is parameterised by weights for a hundred simple patterns. When used in a simple Monte-Carlo search, the policies learnt by simulation balancing achieved significantly better performance, with half the mean squared error of a uniform random policy, and similar overall performance to a sophisticated Go engine.
Building Energy-Efficient Web Servers Using Low Power Devices : Opportunities and Challenges

Power consumption has become one major challenge in designing highperformance servers. Recently, some researchers postulate that better energy efficiency can be achieved by using low power devices originally designed for mobile embedded systems. In this report, we validate this hypothesis by measuring the power and the performance of web servers on system level. We consider the power and the energy consumption of processors, memory, and hard disk drives. Our data indicate that, compared with a Pentium4-based web server, a XScale-based computer can achieve more than 1.7 times higher energy efficiency (web pages per Joule) while its throughput (web pages per second) is less than 20%. Our comparison includes both static and dynamic web pages with different sizes. We also indicate some challenges to design an energy-efficient high-performance web server by using this approach.
The Impact of Purpose On Rating Quality and User Acceptance

Using a quasi-experimental design, the effects of purpose (evaluative vs. developmental) on both peer-rating quality and user acceptance were examined. Subjects were 65 undergraduates divided into 11 project groups. Six groups conducted peer ratings for evaluative (i.e., grading) purposes, whereas the remaining 5 did so for the purpose of providing developmental feedback. Peer ratings conducted for evaluative purposes tended to contain greater halo and to be more lenient, less differentiating, less reliable, and less valid than those performed for developmental purposes. User acceptance as measured by recommendation for future use was more favorable under the developmental than the evaluative conditions. These results suggest that the quality of peer ratings and user acceptance are highly susceptible to the influence of rating contexts and that peer ratings are more useful for developmental than for evaluative purposes. Implications of these results for future peer-appraisal practices and research are discussed.
SWIFT detection of SPIO‐labeled stem cells grafted in the myocardium

We report initial results from studies using sweep imaging with Fourier transformation (SWIFT) to detect superparamagnetic iron oxide (SPIO) particle–labeled stem cells in the rat heart. In experiments performed on phantoms containing titanium balls or SPIO–labeled cells, frequency‐shifted signals surrounding the paramagnetic objects produced a pileup artifact visualized by SWIFT. Total signal intensity was retained to a much greater extent by SWIFT as compared to gradient echo imaging. SWIFT imaging of excised and in vivo hearts showed (a) reduced blooming artifact as compared with gradient echo imaging, which helped reduce ambiguity in the detection of SPIO–labeled cells; (b) enhancement of off‐resonance signals relative to the background in the imaginary component of images; and (c) detailed myocardial anatomy in magnitude images, which provided anatomic reference. These features suggest SWIFT can facilitate the detection of SPIO–laden cells in the cardiovascular system. Magn Reson Med 63:1154–1161, 2010. © 2010 Wiley‐Liss, Inc.
The impact of organizational factors on management information system success: An investigation in the Iran's agricultural extension providers

Information system success has been widely discussed in the past two decades. As systems and technologies are being improved and developed, discussions on their effectiveness and evaluation on their success have been continuously debated by researchers, scholars and practitioners throughout the years. Besides the major concern of IS effectiveness, factors influencing IS effectiveness are also important. One of these factors is the organizational factor. Using perceptual measures, this study aims to investigate the influence of organizational factors on MIS success. Survey questionnaires were gathered from 132 Extension Managers from Iran's Agricultural Extension Providers. Seven items were identified to influence MIS success. They are IS department structure, top management support, management style, managerial IT knowledge, goal alignment, resources allocation and IS infrastructure. The study also identified five MIS success dimensions; systems quality, information quality, perceived Ease of use, organizational impact and individual impact. The study found that the MIS success variables are significantly and highly correlated. The study also found all the organizational factors are significantly correlated to the five IS success factors investigated; the system quality, information quality, perceived ease of use, organizational impact and individual impact. Multiple regression analyses also found goal alignment as the highest predictor of IS success, followed by IS department structure, IS infrastructure and management style.
Rubiks: Practical 360-Degree Streaming for Smartphones

The popularity of 360° videos has grown rapidly due to the immersive user experience. 360° videos are displayed as a panorama and the view automatically adapts with the head movement. Existing systems stream 360° videos in a similar way as regular videos, where all data of the panoramic view is transmitted. This is wasteful since a user only views a small portion of the 360° view. To save bandwidth, recent works propose the tile-based streaming, which divides the panoramic view to multiple smaller sized tiles and streams only the tiles within a user's field of view (FoV) predicted based on the recent head position. Interestingly, the tile-based streaming has only been simulated or implemented on desktops. We find that it cannot run in real-time even on the latest smartphone (e.g., Samsung S7, Samsung S8 and Huawei Mate 9) due to hardware and software limitations. Moreover, it results in significant video quality degradation due to head movement prediction error, which is hard to avoid. Motivated by these observations, we develop a novel tile-based layered approach to stream 360° content on smartphones to avoid bandwidth wastage while maintaining high video quality. Through real system experiments, we show our approach can achieve up to 69% improvement in user QoE and 49% in bandwidth savings over existing approaches. To the best of our knowledge, this is the first 360° streaming framework that takes into account the practical limitations of Android based smartphones.
Self-Rectifying and Forming-Free Resistive-Switching Device for Embedded Memory Application

The self-rectifying resistive-switching (RS) device is one of the most promising solutions to overcome the sneaking current issue in a 3D vertical crossbar array. In this letter, we report a CMOS-compatible, forming-free, self-rectifying resistive random access memory device with high uniformity and low operation voltage (<3V) for embedded memory application. Thanks to the low read voltage, this device shows robust read disturbance (>109) characteristics. After introducing a 3-nm HfO2 thin film between Pd and WOx layer, Schottky contact of Pd/HfO2 was formed, which resulted in rectifying property. The HfO2 layer also served as an oxygen reservoir for RS in WOx layer. This novel memory device with excellent performance is a promising candidate for future high density embedded memory application.
An extended web browser for id/locator separation network

With the pretty prompt growth in Internet content, the main usage pattern of internet is shifting from traditional host-to-host model to content dissemination model. To support content distribution, content delivery networks (CDNs) gives an ad-hoc solution and some of future internet projects suggest a clean-slate design. Web applications have become one of the fundamental internet services. How to effectively support the popular browser-based web application is one of keys to success for future internet projects. This paper proposes the IDNet-based web applications. IDNet consists of id/locator separation scheme and domain-insulated autonomous network architecture (DIANA) which redesign the future internet in the clean slate basis. We design and develop an IDNet Browser based on the open source Qt. IDNet browser enables ID fetching and rendering by both `idp:/' schemes URID (Universal Resource Identifier) and `http:/' schemes URI in HTML The experiment shows that it can well be applicable to the IDNet test topology.