Miracle-dz/UniFAR-FTUs huggingface dataset:
An Efficient Client Server Assignment for Internet Distributed Systems

—Internet is a network of several distributed systems that consists of clients and servers communicating with each other directly or indirectly. In order to improve the performance of such a system, client-server assignment plays an important role. Achieving optimal client-server assignment in internet distributed systems is a great challenge. It is dependent on various factors and can be achieved by various means. Our approach is mainly dependent on two important factors, 1) Total communication load and 2) Load balancing of the servers. In our approach we propose an algorithm that is based on Semidefinite programming, to obtain an approximately optimal solution for the client-server assignment problem. Our simulation results indicate that the proposed algorithm outperforms other client server assignment algorithms in terms of optimal value and running time.
The size of mortality differences associated with educational level in nine industrialized countries.

OBJECTIVES This study addresses the question of whether inequalities in premature mortality related to educational level differ among countries. METHODS Data on mortality by educational level were obtained from longitudinal studies from nine industrialized countries. The data referred to men between 35 and 64 years of age. The follow-up periods occurred between 1970 and 1982. The size of mortality differences associated with educational level was measured by means of two inequality indices, both based on Poisson regression analysis. RESULTS Inequalities in mortality are relatively small in the Netherlands, Sweden, Denmark, and Norway and about two times as large in the United States, France, and Italy. Finland and England and Wales occupy intermediate positions. The large inequalities in mortality in the United States and France can be attributed in part to large inequalities in education in these countries. CONCLUSIONS The international pattern found in this study was also observed in a comparison that used occupation as the socioeconomic indicator. Differences between countries in levels of inequality in mortality may be partially explained by the countries' different levels of egalitarian social and economic policies.
PDEs-Based Method for Image Enhancement

Removing noise from data is often the first step in data analysis. De-noising technique should not be only reduce the noise, but do so without blurring or changing the location of the edges. Many approaches have been proposed to accomplish this; in this paper, we have compared three recently developed techniques for image enhancement and denoising. These methods are based on the use of partial differential equations, including second order, fourth order, and the complex partial differential. We consider various well-known measuring metrics used in image processing applied to standard images in this comparison. In this study, it is shown that the capability of the PDE-based approaches depends highly on the neighboring structure. Our investigations show that in an image where the energy of noise is low, the complex diffusion method offers a better result in image denoising compared to other methods. However, when the energy of the noise increases, performance of the complex diffusion method declines. In general, for the case when the energy of noise in an image is unpredictable, using the heat equation for image denoising is recommended.
Runtime Characterization of Triple Stores

As the Semantic Web becomes mainstream, the performance of triple stores becomes increasingly important. Up until now, there have been various benchmarks and experiments that have attempted to evaluate the response time and query throughput of individual stores to show the weaknesses and strengths of triple store implementation. However, these evaluations have primarily focused on the application level and have not sufficiently investigated system-level aspects to discover performance inhibitors and bottlenecks. In this paper, we are proposing metrics based on a systematic study of the impact of triple store implementation on the underlying platform. We choose some popular triple stores as use cases, and perform our experiments on a standard (128GB RAM, 12 cores) and an enterprise platform (768GB RAM, 40cores). Through detailed time cost and system consumption measures of queries derived from the Berlin SPARQL Benchmark (BSBM), we describe the dynamics and behaviors of query execution across these systems. The collected data provides insight into different triple store implementation as well as an understanding of performance differences between the two platforms. The results obtained help in the identification of performance bottlenecks in existing triple stores implementations which may be useful in future design efforts for Linked Data processing.
A maximal inequality for supermartingales

A tight upper bound is given on the distribution of the maximum of a supermartingale. Specifically, it is shown that if $Y$ is a semimartingale with initial value zero and quadratic variation process $[Y,Y]$ such that $Y + [Y,Y]$ is a supermartingale, then the probability the maximum of $Y$ is greater than or equal to a positive constant $a$ is less than or equal to$1/(1+a). $ The proof makes use of the semimartingale calculus and is inspired by dynamic programming.
Software Aging and Rejuvenation: Where We Are and Where We Are Going

After 16 years, a significant body of knowledge has been established in the area of Software Aging and Rejuvenation (SAR). In this paper, we survey papers about SAR that appeared in IEEE conferences and journals, identify where SAR research has been mostly focused, and highlight some aspects deserving more attention, with the aim to provoke a constructive discussion among SAR researches about where SAR has arrived and where it should be headed in the next future.
Inhibition of the 3-Hydroxy-3-methylglutaryl-coenzyme A Reductase Pathway Induces p53-independent Transcriptional Regulation of p21 WAF1/CIP1 in Human Prostate Carcinoma Cells*

Progression through the cell cycle is controlled by the induction of cyclins and the activation of cognate cyclin-dependent kinases. The 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor lovastatin induces growth arrest and cell death in certain cancer cell types. We have pursued the mechanism of growth arrest in PC-3-M cells, a p53-null human prostate carcinoma cell line. Lovastatin treatment increased protein and mRNA levels of the cyclin-dependent kinase inhibitor p21 WAF1/CIP1 , increased binding of p21 with Cdk2, markedly inhibited cyclin E- and Cdk2-associated phosphorylation of histone H1 or GST-retinoblastoma protein, enhanced binding of the retinoblastoma protein to the transcription factor E2F-1 in vivo, and induced the activation of a p21 promoter reporter construct. By using p21 promoter deletion constructs, the lovastatin-responsive element was mapped to a region between −93 and −64 relative to the transcription start site. Promoter mutation analysis indicated that the lovastatin-responsive site coincided with the previously identified transforming growth factor-β-responsive element. These data indicate that in human prostate carcinoma cells an inhibitor of the HMG-CoA reductase pathway can circumvent the loss of wild-type p53 function and induce critical downstream regulatory events leading to transcriptional activation of p21.
Mathematical modeling of a memristor device

The realization of the missing fourth element by Hewlett-Packard in 2008, the memristor, adds new promising technology that enables the continuing improvement of performance, power and cost of integrated circuits and keeping Moore's law alive. Memristor-based technology provides much better scalability, higher utilization when used as memory, and overall lower power consumption. This paper presents a detailed study of existing memristor modeling using Matlab simulations. We studied three different models to predict the behavior of the memristor device. We developed the Matlab algorithms for all models and analyzed them for their compatibility with the experimentally established characteristics of HP memristor, as well as their viability for use in memory circuits. We discussed all the difficulties with these models and adopt a modified model that gives more realistic description of a memristor device.
The Role of Internalizing and Externalizing Symptoms and Social Isolation in Teenage Girls Towards the Use of Internet and Cyberspace

1. Department of Counseling, Faculty of Literature Humanities and Social Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran. 2. Department of Addiction, School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran. 3. Department of Mental Health, School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran.
Estrategias preventivas en relación a las conductas adictivas en adolescentes

Artículo presenta una revisión bibliográfica acerca de las estrategias preventivas en relación a las conductas adictivas en adolescentes, a partir de una metodología de enfoque cualitativo y método documental. Se realizó una revisión sistemática de documentos en español e inglés, relacionados con el objeto de estudio, en las bases de Scopus, Ebsco, Science Direct, Scielo, NDLTD, entre otros, mediante la técnica del “rastreo secuencial”. Se pudo concluir que la prevención temprana desde el área personal, familiar o comunitaria se presentan como alternativas viables para mantener alejado al adolescente de adicciones que causan daños irreparables en su comportamiento y convivencia. Así mismo, se le debe seguir apostando a las estrategias preventivas duraderas y estables en el tiempo con el fin generar impacto a largo plazo tanto en relación a adiciones químicas como comportamentales.
Dynamic Bandwidth Allocation of AAL2 connections in the UTRAN

— With the advent of 3G networks (UMTS, the Universal Mobile Telecommunications System) major players in the telecommunications industry have envisioned a system that is far ahead of current technology in areas such as efficiency, intelligence and power, with large amounts of bandwidth and more. Although this may be true in some aspects, in reality it is just another technology on the telecoms route to the future and problems still exist. Here we specifically focus on bandwidth, it being limited and costly. In order to manage bandwidth in telecommunications networks many techniques have been investigated. This paper explores the applications of A2S (AAL2 signalling) as a tool for DBA (dynamic bandwidth allocation) within the UTRAN. SHO (Soft Handover) is identified as a good time to renegotiate and reallocate bandwidth, as this is when new connections are being established. The ultimate goal is to achieve more efficient bandwidth utilization.
Preventing recurrent depression using cognitive therapy with and without a continuation phase: a randomized clinical trial.

BACKGROUND Cognitive therapy (CT) may reduce depressive relapse and recurrence when patients learn and use the associated skills. Reported relapse and recurrence rates after CT discontinuation vary widely. The factors that determine when CT is preventive remain unidentified. We developed continuation-phase CT (C-CT) to teach responders skills to prevent relapse. This is the first randomized trial comparing CT with and without a continuation phase in responders to CT who were vulnerable, given their history of recurrent unipolar depression. METHODS Patients aged 18 to 65 years (n = 156) with recurrent DSM-IV major depressive disorder (MDD) entered 20 sessions of acute-phase CT (A-CT). Unmedicated responders (ie, no MDD and 17-item Hamilton Rating Scale for Depression score < or =9; n = 84) were randomized to either 8 months (10 sessions) of C-CT or control (evaluation without CT). Follow-up lasted an additional 16 months. A clinician blind to assignment evaluated relapse and recurrence (ie, DSM-IV MDD). RESULTS Over an 8-month period, C-CT significantly reduced relapse estimates more than control (10% vs 31%). Over 24 months, including the CT-free follow-up, age of onset and quality of remission during the late phase of A-CT each interacted with condition assignment to influence durability of effects. In patients with early-onset MDD, C-CT significantly reduced relapse and recurrence estimates (16% vs 67% in control). When patients had unstable remission during late A-CT, C-CT significantly reduced relapse and recurrence estimates to 37% (vs 62% in control). CONCLUSIONS Findings suggest that 8 months of C-CT significantly reduces relapse and recurrence in the highest-risk patients with recurrent MDD. Risk factors influenced the necessity for C-CT.
Global Vision Based Tracking of Multiple Mobile Robots in Subpixel Precision

This paper presents a new global vision system for tracking of multiple mobile robots, with special emphasis on following requirements: (i) high measurement precision and accuracy, (ii) robustness to light intensity changes, (iii) ability to track unlimited number of robots, and (iv) high speed and real time operation. In order to fulfill these requirements we use an IEEE 1394 camera with 80 fps, which delivers images in so called Bayer format. We also design a specific robot mark that enables measurement of robot locations directly in Bayer format image with subpixel precision. The developed vision system fulfils all of given requirements, which was verified by carefully performed experiments.
Locking performance in centralized databases

An analytic model is used to study the performance of dynamic locking. The analysis uses only the steady-state average values of the variables. The solution to the model is given by a cubic, which has exactly one valid root for the range of parametric values that is of interest. The model's predictions agree well with simulation results for transactions that require up to twenty locks. The model separates data contention from resource contention, thus facilitating an analysis of their separate effects and their interaction. It shows that systems with a particular form of nonuniform access, or with shared locks, are equivalent to systems with uniform access and only exclusive locks. Blocking due to conflicts is found to impose an upper bound on transaction throughput; this fact leads to a rule of thumb on how much data contention should be permitted in a system. Throughput can exceed this bound if a transaction is restarted whenever it encounters a conflict, provided restart costs and resource contention are low. It can also be exceeded by making transactions predeclare their locks. Raising the multiprogramming level to increase throughput also raises the number of restarts per completion. Transactions should minimize their lock requests, because data contention is proportional to the square of the number of requests. The choice of how much data to lock at a time depends on which part of a general granularity curve the system sees.
Lactate Activates HIF-1 in Oxidative but Not in Warburg-Phenotype Human Tumor Cells

Cancer can be envisioned as a metabolic disease driven by pressure selection and intercellular cooperativeness. Together with anaerobic glycolysis, the Warburg effect, formally corresponding to uncoupling glycolysis from oxidative phosphorylation, directly participates in cancer aggressiveness, supporting both tumor progression and dissemination. The transcription factor hypoxia-inducible factor-1 (HIF-1) is a key contributor to glycolysis. It stimulates the expression of glycolytic transporters and enzymes supporting high rate of glycolysis. In this study, we addressed the reverse possibility of a metabolic control of HIF-1 in tumor cells. We report that lactate, the end-product of glycolysis, inhibits prolylhydroxylase 2 activity and activates HIF-1 in normoxic oxidative tumor cells but not in Warburg-phenotype tumor cells which also expressed lower basal levels of HIF-1α. These data were confirmed using genotypically matched oxidative and mitochondria-depleted glycolytic tumor cells as well as several different wild-type human tumor cell lines of either metabolic phenotype. Lactate activates HIF-1 and triggers tumor angiogenesis and tumor growth in vivo, an activity that we found to be under the specific upstream control of the lactate transporter monocarboxylate transporter 1 (MCT1) expressed in tumor cells. Because MCT1 also gates lactate-fueled tumor cell respiration and mediates pro-angiogenic lactate signaling in endothelial cells, MCT1 inhibition is confirmed as an attractive anticancer strategy in which a single drug may target multiple tumor-promoting pathways.
Trajectory simplification method for location-based social networking services

The increasing availabilities of GPS-enabled devices have given rise to the location-based social networking services (LBSN), in which users can record their travel experiences with GPS trajectories and share these trajectories among each other on Web communities. Usually, GPS-enabled devices record far denser points than necessary in the scenarios of GPS-trajectory-sharing. Meanwhile, these redundant points will decrease the performance of LBSN systems and even cause the Web browser crashed. Existing line simplification algorithms only focus on maintaining the shape information of a GPS trajectory while ignoring the corresponding semantic meanings a trajectory implies. In the LBSN, people want to obtain reference knowledge from other users' travel routes and try to follow a specific travel route that interests them. Therefore, the places where a user stayed, took photos, or changed moving direction greatly, etc, would be more significant than other points in presenting semantic meanings of a trajectory. In this paper, we propose a trajectory simplification algorithm (TS), which considers both the shape skeleton and the semantic meanings of a GPS trajectory. The heading change degree of a GPS point and the distance between this point and its adjacent neighbors are used to weight the importance of the point. We evaluated our approach using a new metric called normalized perpendicular distance. As a result, our method outperforms the DP (Douglas-Peuker) algorithm, which is regarded as the best one for line simplification so far.
POSTER: The ART of App Compartmentalization

On Android, advertising libraries are commonly integrated with their host apps. Since the host and advertising components share the application's sandbox, advertisement code inherits all permissions and can access host resources with no further approval needed. Motivated by the privacy risks of advertisement libraries as already shown in the literature, this poster introduces an Android Runtime (ART) based app compartmentalization mechanism to achieve separation between trusted app code and untrusted library code without system modification and application rewriting. With our approach, advertising libraries will be isolated from the host app and the original app will be partitioned into two sub-apps that run independently, with the host app's resources and permissions being protected by Android's app sandboxing mechanism. ARTist [1], a compiler-based Android app instrumentation framework, is utilized here to recreate the communication channels between host and advertisement library. The result is a robust toolchain on device which provides a clean separation of developer-written app code and third-party advertisement code, allowing for finer-grained access control policies and information flow control without OS customization and application rebuilding.
Multisite Ultra-Wideband Radar Systems with Information Fusion : Some Principal Features

Detection characteristics, resolution capability, and target coordinates measurement accuracy of Multisite Radar Systems (MSRSs) consisting of Ultra-Wideband (UWB) radars are analyzed. Two types of UWB radars are considered: using short carrier-free pulses and using pulses with carrier frequencies. Target radial dimensions are assumed to be much greater than range resolution cells of UWB radars, so that we have target range profiles at each radar. Noticeable advantages of MSRSs with UWB radars have been shown; especially when range profiles of a target may be expected to be equal with respect to all radars.
Study on the Magnetic Field Dependence of the Nematic-Isotropic Phase Transition of Liquid Crystals : A Monte Carlo Study by Employing the Wang- Warner Simple Cubic Lattice Model

We have used Monte Carlo technique by employing the Wang-Warner simple cubic lattice model to study the influence of magnetic field on nematic-isotropic phase transition of liquid crystals. This is shown in phase diagrams involving energy per site, orientational order parameter and specific heat as function of temperature. We find that in the absence of magnetic field, the nematic-isotropic phase transition is a strong first order transition. Upon increasing the strength of magnetic field, the jump of first order phase transition becomes small and in a critical magnetic field ( 3 0, hc  ), the phase transition changes becoming the second order. For fields larger than c h there is no phase transition and the nematic and paranematic phases are indistinguishable. Index Term-phase transition, liquid crystal, magnetic field, Monte Carlo technique, Wange-Warner simple cubic lattice
Environmental benefits of enhanced surveillance technology on airport departure operations

Airport departure operations constitute an important source of airline delays and passenger frustration. Excessive surface traffic is the cause of increased controller and pilot workload; It is also the source of increased emissions; It worsens traffic safety and often does not yield improved runway throughput. Acknowledging this fact, this paper explores some of the feedback mechanisms by which airport traffic can be optimized in real time according to its current degree of congestion. In particular, it examines the environmnetal benefits that improved surveillance technologies can bring in the context of gate- or spot-release aircraft strategies. It is shown that improvements can lead yield 4% to 6% emission reductions for busy airports like New-York La Guardia or Seattle Tacoma. These benefits come on top of the benefits already obtained by adopting threshold strategies currently under evaluation.
On a radical democratic theory of political protest: potentials and shortcomings

ABSTRACT The increasing number of protest activities urges political and social philosophers to analyze the meaning and function of protest in modern democracy. Its focus on conflictive social relations makes radical democratic theory the most promising approach currently at hand for such an endeavor. It allows us to comprehend today's form of protest as a critique of the current shape of modern democratic order (and not as interest politics or as a struggle for rights). Accordingly, radical democratic theory has established itself in academic discourses and is widely and well received by political activists. Notwithstanding its critical potential, I argue that radical democratic thought is not in a position to conceptually grasp the differentia specifica of a democratic order and to sufficiently determine the meaning of protest for democracy. A democratic and social theory of political protest in modern democracies is, therefore, still waiting to be developed.