Miracle-dz/UniFAR-FTUs huggingface dataset:
Interest-Awareness for Information Sharing in MANETs

The progress in mobile devices and wireless communication technologies magnifies the importance of opportunistic networks like Mobile Ad-hoc NETworks (MANETs). In MANETs, information sharing is performed by distributing advertisements and queries. In order not to load the environment with unnecessary traffic, file advertisement and query resolution should be performed according to the interests of users. In this paper, we propose algorithms to identify and estimate users’ interests. Experimentations are conducted to evaluate the performanace of the proposed algorithms on a mobile phone and a PC.
Steady-state analysis of a slotted and controlled Aloha system with blocking

We assume the reader is somewhat familiar with the ongoingdevelopment of Aloha techniques as described briefly in Abramson'sFJCC 7 0 paper and Roberts's SJCC72 paper. In short, an Alohasystem permits the (hopefully) occasional interference of datapacket transmissions in a multi-access channel and provides for theretransmission of lost packets after some randomly distributedinterval. The purposes behind permitting interference and providingrecovery are (1) reduced central communication control to improvereliability and (2) improved use of communication facilites underbursty loads as found in interactive computer communication. Alohatechniques are finding applicability in various communicationcontexts (e.g., satellites), but here the emphasis is onlarge populations of (potentially mobile) interactiveterminals. Slotted. In a slotted Aloha system, all terminalsbegin their packet (re)transmissions at the ' tick of some globalclock. Slotting has been advocated by Roberts as a simple way toimprove the limiting thruput of an Aloha channel by a factor of 2.Global ticking can be implemented in a (hopefully positive) numberof ways and its feasibility is assumed in this paper. We rely onslotting to simplify our analysis, but suggest that the stabilityand control phenomena studied are characteristic of Aloha systemsin general. Controlled. The notion of an optimal retransmission delaywas introduced by Roberts. We extend the notion to include dynamiccontrol of retransmission delay. A controlled Aloha systemhas the property that its terminals adjust their retransmissionbehavior as a function of perceived channel utilization. It will beshown that such adjustments are implementable in at least one wayand that they improve system performance under heavy loads. Blocking and Thinking. When a user's terminal has a readypacket, it is assumed that no new packets can be generated. Theuser is said to be blocked. When a user is not blocked, heis said to be thinking. This assumption about user behaviordeparts from Abramson 's analysis and is thought to produce morerealistic solutions. Recall that Abramson (in FJCC70) modelledusers as unperturbable, realtime, Poisson sources of new packets.By adding blocking to an Aloha model, transmission delays feed back(as in real life) on the generation of transmission requests. Usersessions are said to be dilated by transmissions delays. It is intended that think time account for (1) delays incentral system response, (2) return transmission delays, (3) realuser thinking time, and (4) type-in time. Block timeaccounts only for delays due to transmissions through themulti-access channel. The following analysis rests on some (very) simplifyingassumptions about an Aloha system in equilibrium, in steady state.While having a large population of users tends to support oursteady-state arguments, the dynamics do indeed require moredetailed investigation.
The Relationship between Performance Appraisal Satisfaction and Employee Outcomes: With Special Reference of Bank of Ceylon Head Office

The HR practice of Performance appraisal (PA) positively influences employee behavior and performance. The purpose of the present study is to examine the relationship between performance appraisal satisfaction and employee outcomes, in the form of employees’ motivation, work performance and employees’ commitment. Base on that purpose, BOC Head office was selected to conduct this research. The research framework consists of independent variables, and a dependent variable. The independent variable of the study is PA satisfaction and dependent variable is employee outcomes. Dependent variable divided in to three sub variables; employees’ motivation, work performance and employees’ commitment. Three hypotheses were formulated to be tested under this study. To collect data a structured questionnaire was used and distributed among the 110 sample by using the simple random sampling method. The data was analyzed through correlations of variables and regression in order to answer for the Hypothesis of the study. The results indicate that there is a weak but positive relationship between performance appraisal satisfaction and employee outcomes. And also there is an impact of performance appraisal satisfaction on employee outcomes. According to the analysis, 10% impact of Performance Appraisal satisfaction on employees’ motivation, 14% impact of Performance Appraisal satisfaction on work performance and 5% impact of Performance Appraisal satisfaction on employees’ commitment. Thus, in order to obtain positive outcomes, organization should provide a performance appraisal platform where employees must create satisfaction with performance appraisal.
Non-rigid Surface Tracking for Virtual Fitting System

In this paper, we describe a method for overlaying a texture onto a T-shirt, for improving current virtual fitting system. In such systems, users can try on clothes virtually. In order to realize such a system, a depth camera has been used. These depth cameras can capture 3D data in real time and have been used by some industrial virtual cloth fitting systems. However, these systems roughly, or just do not, consider the shape of the clothes that user is wearing. So the appearance of these virtual fitting systems looks unnaturally. For a better fitting, we need to estimate 3D shape of cloth surface, and overlay a texture of the cloth that the user wants to see onto the surface. There are some methods that register a 3D deformable mesh onto captured depth data of a target surface. Although those registration methods are very accurate, most of them require large amount of processing time or either manually-set markers or special rectangles. The main contribution of our method is to overlay a texture onto a texture of T-shirt in real-time without modifying the surface.
Near-Unity Quantum Yields for Intersystem Crossing and Singlet Oxygen Generation in Polymethine-like Molecules: Design and Experimental Realization

The photophysical properties of two pairs of squaraine molecules where two oxygen atoms in a squaraine bridge are replaced with sulfur atoms are investigated. This substitution leads to an inversion of the lowest singlet π−π* electronic transition by an n−π* transition, effectively reducing the energy difference between singlet and triplet states and significantly increasing the intersystem crossing efficiency without the use of “heavy atoms”. Experimental results, in agreement with quantum chemical calculations, show near-unity values for triplet quantum yield and singlet oxygen generation quantum yield for sulfur-containing squaraines, which are potentially useful for two-photon photodynamic therapy.
A design procedure for an acoustic mirror providing dual reflection of longitudinal and shear waves in Solidly Mounted BAW Resonators (SMRs)

The quality factor of the traditional Solidly Mounted Resonator (SMR) is limited by substrate losses, as the traditionally employed acoustic mirror reflects longitudinal waves but not shear waves. Modern mirrors do reflect both waves, but design rules for such mirrors have not been published so far. We propose a systematic design procedure derived from optics leading to a novel embodiment for the acoustic mirror which effectively reflects both longitudinal and shear waves. This method can be applied for the acoustic mirror design for any given material combination. An analytical model is presented; its agreement with FEM simulations is good. With the optimized design, we can obtain a minimum transmission for longitudinal and shear waves of −25 dB and −20 dB at resonance frequencies for longitudinal and shear waves, respectively, for various reflector material combinations.
EEG Based Patient Monitoring System for Mental Alertness Using Adaptive Neuro-Fuzzy Approach

Recent electrophysiological studies support command-specific changes in the electroencephalography (EEG) that have promoted their intensive application in the noninvasive brain computer interfaces (BCI). However, EEG is plagued by a variety of interferences and noises, thereby demanding better accuracy and stability for its application in the neuroprosthetic devices. Here we investigate wavelets and adaptive neuro-fuzzy classification algorithms to enhance the classification accuracy of cognitive tasks. Using a standard cognitive EEG dataset, we demonstrate improved performance in the classification accuracy with the proposed system. 
Study on Performance of Non-Orthogonal Perfect Space-Time Block Coded OFDM Systems

A novel wireless transmission method was proposed in this paper. The new method combined non-orthogonal perfect space-time block codes (NPSTBC) and orthogonal frequency division multiplexing (OFDM) together. Compared with orthogonal space-time block codes, the NPSTBC based cyclic division algebras can achieve full-diversity transmission. The low-complexity sphere decoder is used to realize the decoding of NPSTBC. The results show that the performance of NPSTBC-OFDM system is better than that of orthogonal space-time block coded OFDM system and linear-dispersion space-time coded OFDM system under identical spectrum utilization.
Question-driven classification of retrieved documents

Many existing information access systems deliver ranked lists of documents in response to users' queries. Some systems also endeavour to represent some of the various types of relationships that can exist between documents. However, few systems provide effective mechanisms to help users discover useful information within the set of retrieved documents. In this paper, we present a question-driven approach to delivering retrieved documents in an attempt to organize them in a way that is closer to the user's mental representation of the expected answer. In our proposed approach, retrieved documents are dynamically classified into categories; an appropriate classification scheme is selected by a user on the basis of his own understanding of the information need. Experimental results show that users are more satisfied with such a directed categorization than with a list of retrieved documents.
Iconic memory and attention in the overflow debate

Abstract The overflow debate concerns this following question: does conscious iconic memory have a higher capacity than attention does? In recent years, Ned Block has been invoking empirical works to support the positive answer to this question. The view is called the “rich view” or the “Overflow view”. One central thread of this discussion concerns the nature of iconic memory: for example how rich they are and whether they are conscious. The first section discusses a potential misunderstanding of “visible persistence” in this literature. The second section discusses varieties of attention relevant to this debate. The final section discusses the most prominent alternative interpretation of the Sperling paradigm—the postdiction interpretation—and explains how it can be made compatible with a weaker version of the rich or overflow view.
Accelerating Analytics with Dynamic In-Memory Expressions

Oracle Database In-Memory (DBIM) accelerates analytic workload performance by orders of magnitude through an in-memory columnar format utilizing techniques such as SIMD vector processing, in-memory storage indexes, and optimized predicate evaluation and aggregation. With Oracle Database 12.2, Database In-Memory is further enhanced to accelerate analytic processing through a novel lightweight mechanism known as Dynamic In-Memory Expressions (DIMEs). The DIME mechanism automatically detects frequently occurring expressions in a query workload, and then creates highly optimized, transactionally consistent, in-memory columnar representations of these expression results. At runtime, queries can directly access these DIMEs, thus avoiding costly expression evaluations. Furthermore, all the optimizations introduced in DBIM can apply directly to DIMEs. Since DIMEs are purely in-memory structures, no changes are required to the underlying tables. We show that DIMEs can reduce query elapsed times by several orders of magnitude without the need for costly pre-computed structures such as computed columns or materialized views or cubes.
Multiple-Clone Activation of Hypnozoites Is the Leading Cause of Relapse in Plasmodium vivax Infection

Background Plasmodium vivax infection is characterized by a dormant hepatic stage, the hypnozoite that is activated at varying periods of time after clearance of the primary acute blood-stage, resulting in relapse. Differentiation between treatment failure and new infections requires characterization of initial infections, relapses, and clone multiplicity in vivax malaria infections. Methodology/Principal Findings Parasite DNA obtained from primary/relapse paired blood samples of 30 patients with P. vivax infection in Brazil was analyzed using 10 molecular markers (8 microsatellites and MSP-1 blocks 2 and 10). Cloning of PCR products and genotyping was used to identify low-frequency clones of parasites. We demonstrated a high frequency of multiple-clone infections in both primary and relapse infections. Few alleles were identified per locus, but the combination of these alleles produced many haplotypes. Consequently, the majority of parasites involved in relapse showed haplotypes that were distinct from those of primary infections. Plasmodium vivax relapse was characterized by temporal variations in the predominant parasite clones. Conclusions/Significance The high rate of low frequency alleles observed in both primary and relapse infections, along with temporal variation in the predominant alleles, might be the source of reported heterologous hypnozoite activation. Our findings complicate the concept of heterologous activation, suggesting the involvement of undetermined mechanisms based on host or environmental factors in the simultaneous activation of multiple clones of hypnozoites.
Multi Level Categorization Visualization Based on Gestalt Perception Model

The number of new documents available is huge and it is very difficult now a days to read all the documents and to understand what useful information the document contains. Therefore automated document visualization techniques are available, which helps the user in analyzing a collection of documents, or topics from a single document without going through all the documents. These techniques are most concerned with the visual aids to reveal trends and relationships in documents leading to new insights. They do not merely illustrate the pre existing relationships in the documents. The goal is to create useful and usable visual representations of language in order to reveal novel trends and relationships that exists in linguistic data. Mind map is one such methodology for browsing and exploring topics and concepts in a collection of documents (Spangler, Kreulen et al. 2002, 1170). Mind map generates a radial graph, binary tree and visualizes the document collection in a high dimensional space. Document keyword emphasis visualization (Manber 1997, 132), Visualization of annotated data in a document (Rogers, Gaizauskas et al. 1997, 338), Visualization of topical and temporal information from text (Mala, Geetha et al. 2006, 839) and visualization of meanings of text (Yeap, Reedy et al. 2005, 883) are some of the recent works in the area of document visualization. Here in our work the emphasis is on document category visualization. The category information of the document is visualized by applying the Gestalt perception model.
Global Controllability of Nonviscous and Viscous Burgers-Type Equations

In this paper, we deal with both nonviscous and viscous Burgers-type equations on a bounded interval. We study the global exact controllability of these equations when we have three controls: one control is the right member of the equation and is constant with respect to the space variable; the two others are the boundary values. For a first time, we are interested in nonviscous Burgers-type equations and we prove their global exact controllability for every time $T>0$ with such controls thanks to the return method. Then we prove the global exact controllability of the viscous Burgers equation for every time $T>0$.
Creation of internet-telephony services using Siplet technology

This paper deals with the design of telecommunications services using the SIP protocol. We give an overview of SIP and an overview of the programming models CGI and Servlets together with their SIP-based extensions SIP-CGI and SIP-Servlets. Then, we show how we have created several SIP-based services using SIP-Servlets.
Symmetric Fractional Diffusion and Entropy Production

The discovery of the entropy production paradox (Hoffmann et al., 1998) raised basic questions about the nature of irreversibility in the regime between diffusion and waves. First studied in the form of spatial movements of moments of H functions, pseudo propagation is the pre-limit propagation-like movements of skewed probability density function (PDFs) in the domain between the wave and diffusion equations that goes over to classical partial differential equation propagation of characteristics in the wave limit. Many of the strange properties that occur in this extraordinary regime were thought to be connected in some manner to this form of proto-movement. This paper eliminates pseudo propagation by employing a similar evolution equation that imposes spatial unimodal symmetry on evolving PDFs. Contrary to initial expectations, familiar peculiarities emerge despite the imposed symmetry, but they have a distinct character.
Soft Decision Decoding of Fixed Rate Entropy Constrained Quantizer over a Noisy Channel

Variable-length codes (e.g. Huuman codes) are commonly employed to minimize the average binary code-word length in the quantization of discrete sources. However , the eeect of error propagation limits the usefulness of variable length codes for the transmission over noisy channels. To avoid this shortcoming, one can use a xed-rate entropy constrained quantizer, limiting the propagation of error within a single block. This paper presents the optimal decoder for a xed-rate entropy constrained scalar quan-tizer. We model all the possible combinations of codewords in a given block by a trellis structure where the Viterbi algorithm is used to choose the most likely path through this trellis. Numerical results are presented indicating a substantial reduction in the end-to-end source distortion with respect to the conventional decoding methods.
Cellular Kinetics of Perivascular MSC Precursors

Mesenchymal stem/stromal cells (MSCs) and MSC-like multipotent stem/progenitor cells have been widely investigated for regenerative medicine and deemed promising in clinical applications. In order to further improve MSC-based stem cell therapeutics, it is important to understand the cellular kinetics and functional roles of MSCs in the dynamic regenerative processes. However, due to the heterogeneous nature of typical MSC cultures, their native identity and anatomical localization in the body have remained unclear, making it difficult to decipher the existence of distinct cell subsets within the MSC entity. Recent studies have shown that several blood-vessel-derived precursor cell populations, purified by flow cytometry from multiple human organs, give rise to bona fide MSCs, suggesting that the vasculature serves as a systemic reservoir of MSC-like stem/progenitor cells. Using individually purified MSC-like precursor cell subsets, we and other researchers have been able to investigate the differential phenotypes and regenerative capacities of these contributing cellular constituents in the MSC pool. In this review, we will discuss the identification and characterization of perivascular MSC precursors, including pericytes and adventitial cells, and focus on their cellular kinetics: cell adhesion, migration, engraftment, homing, and intercellular cross-talk during tissue repair and regeneration.
Exú’s Work – The Agency of Ritual Objects in Southeast Brazilian Umbanda

Abstract This article* concentrates on the material side of religious intimacy in Afro-Brazilian Umbanda through an ‘ontographic’ perspective as well as looking at materiality as evidence. It is based on an eleven-month fieldwork period among devotees, clients and individual practitioners of Umbanda in Southeast Brazilian metropolises, especially in São Paulo. In people’s experiences of spiritual work (trabalho) and spiritual development (desenvolvimento) carried out with Exús – guardians, guides and protectors who have, after their death, returned in order to work for people’s wellbeing – ritual objects (such as bodies, clothes, beverages, herbs, cigarettes, candles, songs) are seen as constitutive in knowledge production and life transformation. The central claim in this article is that diverse material and immaterial objects through which Exús interact and materialise, are neither primarily symbolic nor representative, but are re-configurative.
Computing Termination Conditions of Iterative Programs

It is common to use invariant assertions to analyze functional properties of loops (such as partial correctness) and to use variant functions to analyze operational properties of loops (such as termination). In this paper, we explore an orthogonal approach, based on invariant relations, which enables us to reason about functional properties as well as termination in a uniform manner; also, our definition of termination encompasses not only the property that the loop executes a finite number of iterations, but also the property that every single iteration of the loop executes without raising an exception and/or causing an abort. We present a general theorem that provides a necessary condition of termination (in the sense of having a finite number of iterations, and in the sense of avoiding aborts), and discuss under what circumstances the given condition can be deemed sufficient, in addition to being provably necessary.
Monoglucosyl-rutin as a potential radioprotector in mammalian cells

In the present study, the role of monoglucosyl-rutin as a potential radioprotector was investigated using mammalian cell culture models. Cell survival and DNA damage were assessed using colony formation, sister chromatid exchange and γH2AX assays. It was demonstrated that monoglucosyl-rutin was able to increase cell survival when exposed to ionizing radiation, possibly by decreasing the amount of base damage experienced by the cell. However, the present study also demonstrated that, despite monoglucosyl-rutin exhibiting radioprotective effects at low doses, high doses of monoglucosyl-rutin led to a decrease in plating efficiency and an increased doubling time. This effect may be due to double-strand breaks caused by high concentrations of monoglucosyl-rutin.