Miracle-dz/UniFAR-FTUs huggingface dataset:
Slide: A Model to Seamlessly Switch Zones for MMOG

Recently, P2P networks have been used to support massively multiplayer online games (MMOG). Because players in MMOG have localized interests, the whole game space is divided into multiple sub-spaces to reduce network traffic and increase scalability. However, when players switch sub-spaces or subspaces are partitioned or merged frequently, system jitter will occur. The ‘Slide’ model that we propose includes: (1) an advance resource discovery mechanism, which uses common peers to help each other to discover resources, in order to balance network traffic and reduce the dependence on super peers; (2) an event delivery mechanism delivering action messages instead of state messages, to reduce network traffic of the system; (3) a buffer technique to seamlessly switch zones, which sets buffers between zones to avoid players frequently switching zones. We compared the Slide model with the SimMud model, and the results show that the Slide model can reduce network traffic to 25.94% compared to that of the SimMud model, and thus avoid system jitter.
A Correlation for Interfacial Heat Transfer Coefficient for Turbulent Flow Over an Array of Square Rods

Interfacial heat transfer coefficients in a porous medium modeled as a staggered array of square rods are numerically determined. High and low Reynolds k-e turbulence models are used in conjunction of a two-energy equation model, which in chides distinct transport equations for the fluid and the solid phases. The literature has documented proposals for macroscopic energy equation modeling for porous media considering the local thermal equilibrium hypothesis and laminar flow. In addition, two-energy equation models have been proposed for conduction and laminar convection in packed beds. With the aim of contributing to new developments, this work treats turbulent heat transport modeling in porous media under the local thermal nonequilibrium assumption. Macroscopic time-average equations for continuity, momentum, and energy are presented based on the recently established double decomposition concept (spatial deviations and temporal fluctuations of flow properties). The numerical technique employed for discretizing the governing equations is the control volume method. Turbulent flow results for the macroscopic heat transfer coefficient, between the fluid and solid phase in a periodic cell, are presented.
Recommendations in social networks: an extra feature or an essential need

This paper analyzes user’s need of content recommendation at the social network Facebook. It presents results from a survey on real social network’s users. The results shows that Facebook users need better interface for news feed browsing. It have to provide better information filtering options, recommendation system and options for manual refinement of the results from it. The collected information from the survey is used to determine features which an application has to provide as social network news feed browser and to receive user’s trust. Further some implementation details and faced difficulties are presented.
Self-mode-locking of cw solid-state lasers with a nonlinear birefringent polarisation modulator

A fluctuation model is used to show that effective self-mode-locking can be achieved in cw solid-state lasers with nonlinear birefringent polarisation modulators of two types. The discriminating action of modulators is based on the rotation and distortion of the polarisation ellipse, which depends on the intensity of the radiation propagating in the birefringent medium and is related to self-phase-modulation of two polarisation components. The linear phase shift of these components and the angular orientations of the modulator parts are determined to ensure that the modulator acts as a discriminator. An analysis is made of the regions of efficient self-mode-locking of cw lasers with nonlinear birefringent modulators as a function of the laser parameters.
Heat and Mass Transfer with Free Convection MHD Flow Past a Vertical Plate Embedded in a Porous Medium

An analysis to investigate the combined effects of heat and mass transfer on free convection unsteady magnetohydrodynamic (MHD) flow of viscous fluid embedded in a porous medium is presented. The flow in the fluid is induced due to uniform motion of the plate. The dimensionless coupled linear partial differential equations are solved by using Laplace transform method. The solutions that have been obtained are expressed in simple forms in terms of elementary function and complementary error function . They satisfy the governing equations; all imposed initial and boundary conditions and can immediately be reduced to their limiting solutions. The influence of various embedded flow parameters such as the Hartmann number, permeability parameter, Grashof number, dimensionless time, Prandtl number, chemical reaction parameter, Schmidt number, and Soret number is analyzed graphically. Numerical solutions for skin friction, Nusselt number, and Sherwood number are also obtained in tabular forms.
Online Child Sex Solicitation: Exploring the Feasibility of a Research ‘Sting’

A small scale test of the integrity of Internet Web 2.0 social network sites was undertaken over several weeks in 2007. The fictional identities of four female underage children where posted on three network sites and later introduced to relay chat forums in order to explore the impact of apparent vulnerability on potential selection of Internet victims. Only one of the three social network sites in the study recognized that the postings violated child protection policies and subsequently closed down the underage postings. Two basic identities were created: one that engendered a needy and vulnerable characterization of a child while the other identity was created to represent a happy and attached child character. The number of contacts and suspicious contacts were monitored to test assumptions about child ‘vulnerability’ and risks of unwanted sexual solicitations. The characters created also included either an avatar and/or contact details. These variants of the experiment showed that the inclusion of an image or access details increased the likelihood of contacts, including suspicious contact regardless of ‘vulnerability’. This small experiment noted that although vulnerable children with additional cues maybe at more risk all children who posted details about themselves on social network sites faced the risk of contact by predators. The need for further research and better means of regulating such sites was suggested.
Antibacterial and analgesic activity of leaves of Lantana camara

The leaves of the plant Lantana camara were extracted with different solvents and screened for their antibacterial and analgesic activities. The chloroform and methanolic extract of the plant Lantana camara has showed the presence of four alkaloid compounds each. Antibacterial activity was evaluated using MIC method against bacteria. The analgesic activity of different extracts of Lantana camara leaves is evaluated by Eddy’s hot plate method where the responses are jumping withdrawal of paws and licking of paws. This study demonstrates that leaf powder of Lantana camara has significant antibacterial and analgesic activities.
A multi-taxonomic indicator of acidification : isolating the effects of pH from other water-chemistry variables

Abundances of 72 zoobenthic taxa, pH values, and other abiotic variables were sampled in the littoral zones of 45 Canadian Shield lakes. Using these data, an eight-taxon empirical model of acidification was developed through partial canonical correlation analysis. This model describes 86% of the variation in pH. This technique was used to isolate those taxa whose distributions most directly reflected pH variability after the influence of calcium concentration, conductivity, colour, and spatial structure was eliminated. Benthic groups such as snails, leeches, crayfish, and several mayflies, which have been identified in the literature as potential indicators of acidification, were found, in the current data set, to covary most directly with the measured environmental covariables of pH. The best single-species indicator, Hyallela azteca, explained 49% of pH variation. The shape of the speciesnenvironment relationship was tested using both linear and unimodal response models. Across the range of habitats sampled here (pH 4.7n7.5), the taxa exhibited essentially linear responses. Resume : On a OtudiO liabondance de 72 taxons diorganismes zoobenthiques, le pH et diautres variables abiotiques par le prOlvement diOchantillons dans la zone littorale de 45 lacs du Bouclier canadien. liaide de ces donnOes, on a OlaborO un modle empirique ‡ huit taxons de liacidification gr‚ce ‡ une analyse de corrOlation canonique partielle. On a pu ainsi isoler les taxons dont la distribution reflOtait plus directement la variabilitO du pH aprs avoir OliminO liinfluence du calcium, de la conductivitO, de la couleur et de liorganisation spatiale. Dans les ensembles de donnOes actuelles, des groupes benthiques comme les gastropodes, les sangsues, les Ocrevisses et plusieurs OphOmres, reconnus dans la littOrature comme des indicateurs potentiels de liacidification, prOsentent une covariance plus directe avec les covariables environnementales mesurOes du pH. La meilleure espce indicatrice, Hyallela azteca, expliquait 49% de la variation du pH. Le type de rapport entre liespce et lienvironnement a OtO vOrifiO au moyen de modles de rOaction linOaire et unimodale. Parmi la gamme dihabitats OchantillonnOs dans le cadre de cette Otude (pH 4,7n7,5), les rOactions des taxons Otaient essentiellement linOaires. (Traduit par la ROdaction)
Impact of ENSO on the Paranaiba Catchment, Brazil

ブラジル・パラナイバ川ファゼンダ・サンタマリア流量観測所における流量データによると、同河川は12-5月間に流量が増加し、6-8月に流量が著しく減少する。 同河川の3-5月における雨期における流量減少とEl Nino Modoki現象との関連性について本論文では明らかにしている。 本研究における極端流量現象は１週間前の流況状況をもとに定義する。 中部太平洋暖水塊の正フェーズの発生時に3-5月の流量減少事象の60%が発生している。 しかしながら流量減少事象はどれも通常のEl Nino現象下では発生していない。 一方流量増加事象においてもEl Nino Modoki現象との間で強く関連しており、ほとんどの流量増加現象はEl Nino Modokiもしくは負のインド洋ダイポールモード(nIOD)下にて発生している。 気候変動は直接的に降雨に影響を及ぼし、もちろん流量に対して大きな影響を与えるが、流量はまた土地利用変化などの人間活動の影響も受けるためこれについても更なる評価は必要である。
The Dark Matter Crisis: Falsification of the Current Standard Model of Cosmology

Abstract The current standard model of cosmology (SMoC) requires The Dual Dwarf Galaxy Theorem to be true according to which two types of dwarf galaxies must exist: primordial dark-matter (DM) dominated (type A) dwarf galaxies, and tidal-dwarf and ram-pressure-dwarf (type B) galaxies void of DM. Type A dwarfs surround the host approximately spherically, while type B dwarfs are typically correlated in phasespace. Type B dwarfs must exist in any cosmological theory in which galaxies interact. Only one type of dwarf galaxy is observed to exist on the baryonic Tully-Fisher plot and in the radius-mass plane. The Milky Way satellite system forms a vast phase-space-correlated structure that includes globular clusters and stellar and gaseous streams. Other galaxies also have phase-space correlated satellite systems. Therefore, The Dual Dwarf Galaxy Theorem is falsified by observation and dynamically relevant cold or warm DM cannot exist. It is shown that the SMoC is incompatible with a large set of other extragalactic observations. Other theoretical solutions to cosmological observations exist. In particular, alone the empirical mass-discrepancy—acceleration correlation constitutes convincing evidence that galactic-scale dynamics must be Milgromian. Major problems with inflationary big bang cosmologies remain unresolved.
ULF/ELF electromagnetic fields produced in a conducting medium of infinite extent by a linear current source of finite length

A linear current source of finite length embedded in a conducting medium of infinite extent is considered. Assuming a sea-water medium, the components of the electric and magnetic fields are numerically evaluated for two frequencies in the ULF/ELF range (frequencies less than 3 kHz). Comparison is made between the electric field vectors produced at the two different frequencies, and curves are plotted for one of the frequencies showing the variation with distance of the amplitudes of the electric and magnetic field components. A parametric approach is outlined that generalizes the field data presented in the figures and which enables the data to be extended to conducting media other than sea water and to other frequencies in the ULF/ELF range. Some practical applications of the data are discussed.
Ownership concentration in Russian industry

Using a unique dataset built for the World Bank’s Country Economic Memorandum, we find that a relatively small number of tycoons ('oligarchs') control a substantial share of Russia’s economy. Oligarchs seem to run their empires more efficiently than other Russian owners. While the relative weight of their firms in Russian economy is huge, they do not seem to be excessively large by the standards of the global economy where most of them are operating. However, a majority of the Russian population deems their property rights illegitimate, which creates a fundamental problem for building a democratic and prosperous Russia.
The Effects of Forage Policy on Feed Costs in Korea

Feeding operations are substantial on livestock farms, besides being potentially expensive. Feeding efficiency has been considered a major influence on profits in the livestock industry. Indeed, feed costs are shown to be the largest single item of production cost in Korea. To promote production and use of domestic forage, the Korean government has enforced the forage base expansion program that strengthens the competitiveness of the livestock industry by reducing the production cost. The forage base expansion program includes three main policies: subsidized forage production, support for processing and distribution, and expanding land for forage production. This paper investigates the influence of the government’s policies often conjectured to have pronounced effects on forage production. To evaluate the forage policies, this paper uses a path-analysis approach linking government spending on forage base expansion programs and feed costs. Results indicate that the Korean government’s spending on supporting domestic forage production results in a decrease in the ratio of forage expenses to total feed cost.
After-effect of long-term soil management on soil respiration and otherqualitative parameters under prolonged dry soil conditions

Climatic conditions of environmental zone Nemoral 2 of Europe are favorable for agricultural development. However, more frequent events of hot air-waves and prolonged droughts occurring as a consequence of climate change lead to soil moisture content reduction down to the plant wilting point. Dry soil conditions may have negative consequences for soil as a habitat. The goal of this study was to evaluate the cumulative after-effect of long-term conventional (CT) and no-tillage (NT) application in combination with or without crop residues on soil physicochemical properties, microbiological activity, and soil respiration (SR) under prolonged dry soil conditions. Long-term CT with residue returning created a soil environment that was more resistant to dry conditions than NT. Long-term CT with residue returning created a qualitative soil environment in which the main direct determinants for SR were fungal (F) and bacterial (B) community and carbon/nitrogen ratio (C/N). Slightly weaker contributors for SR were available phosphorus (PAL), plant wilting point (PWP), plant available water (PAW), and urease activity (UR); however, they acted as indirect factors. Long-term spreading of residues on soil surface under NT determined the decrease in water capacity in mesopores and micropores. Significant reduction in field capacity and PWP was revealed, while PAW remained unchanged compared to NT with residues removed. Main direct determinants for SR were F and PAL. Slightly weaker indirect contributors for SR were B, dehydrogenase, UR, and PAW.
Modification of the mechanical properties of zirconium dioxide ceramics by means of multiwalled carbon nanotubes

A ceramic matrix composite based on zirconium dioxide doped with carbon nanotubes (CNTs) and metallic silver as a plastic binder was produced by hydrothermal synthesis from ceramic precursor and a CNTs suspension followed by critical point drying of the synthesized hydrogel and metallic silver deposition on ceramic composite aerogel fragments from a AgNO3 solution. Multi-indentation loading of the composite has revealed two types of mechanical response: 1) hardness decreasing with an increasing of number of cycles and 2) significant increasing of hardness with an increasing number of indentations. Local chemical composition analysis has revealed correlations between the composite hardness and the presence oxygen atoms for first type and silver and yttrium atoms for second type of mechanical response respectively.
Face Recognition Performance in Facing Pose Variation

There are many real world applications of face recognition which require good performance in uncontrolled environments such as social networking, and environment surveillance. However, many researches of face recognition are done in controlled situations. Compared to the controlled environments, face recognition in uncontrolled environments comprise more variation, for example in the pose, light intensity, and expression. Therefore, face recognition in uncontrolled conditions is more challenging than in controlled settings. In thisresearch, we would like to discuss handling pose variations in face recognition. We address the representation issue us ing multi-pose of face detection based on yaw angle movement of the head as extensions of the existing frontal face recognition by using Principal Component Analysis (PCA). Then, the matching issue is solved by using Euclidean distance. This combination is known as Eigenfaces method. The experiment is done with different yaw angles and different threshold values to get the optimal results. The experimental results show that: (i) the more pose variation of face images used as training data is, the better recognition results are, but it also increases the processing time, and (ii) the lower threshold value is, the harder it recognizes a face image, but it also increases the accuracy.
Molecular Dynamics Simulation of the Crystal Orientation and Temperature Influences in the Hardness on Monocrystalline Silicon

A nanoindentation simulation using molecular dynamic (MD) method was carried out to investigate the hardness behavior of monocrystalline silicon with a spherical diamond indenter. In this study, Tersoff potential was used to model the interaction of silicon atoms in the specimen, and Morse potential was used to model the interaction between silicon atoms in the specimen and carbon atoms in the indenter. Simulation results indicate that the silicon in the indentation zone undergoes phase transformation from diamond cubic structure to body-centred tetragonal and amorphous structure upon loading of the diamond indenter. After the unloading of the indenter, the crystal lattice reconstructs, and the indented surface with a residual dimple forms due to unrecoverable plastic deformation. Comparison of the hardness of three different crystal surfaces of monocrystalline silicon shows that the (0 0 1) surface behaves the hardest, and the (1 1 1) surface behaves the softest. As for the influence of the indentation temperature, simulation results show that the silicon material softens and adhesiveness of silicon increases at higher indentation temperatures.
Eportfolio Implementation in a Multiple Campus Environment 4 - Disruptive Change and Innovation

Eportfolio is used as a concept and practice that facilitates diverse opportunities using technology to profile, reflect on, and progress career development as well as promote and engage learning [1] [2]. Reflective practice is encouraged in the milieu of academic learning, teaching, personal career development and in the professions as it closes the self-regulation ‘loop’ essential for metacognitive monitoring of learning. At our University, the Executive have been challenged when encouraging innovation, active personal learning and digital literacy whilst attempting to implement this technology into a multiple campus university environment; predominantly due to an environment filled by rapid disruptive change and uncertain government funding initiatives. The aim of this paper is to outline the changes that continue to hinder Eportfolio implementation in a multiple campus environment, share strategies we use to manage this process in our journey to promote adoption, and improve implementation through seeking and responding to feedback from the global community.
An exploration of key connections within sales‐marketing interface

Purpose – The paucity of empirical research on the sales‐marketing interface necessitates a detailed exploration of linkages that can forge stronger connection between these two functions. This paper aims to explicate the boundary conditions that may affect the role played by structure, language, and process linkages in forging sales‐marketing connections, and to identify additional linkages that may play an important role in this interface.Design/methodology/approach – A total of 47 sales and marketing professionals across different organizations in diverse industries were interviewed.Findings – The research finds that certain boundary conditions (e.g. organizational hierarchy, time horizon) may influence how structure, language, and process linkages may operate in this interface. It also extends linkage repertoire by identifying two critical linkages: social and philosophical. Its managerial contribution lies in stressing the importance of: vertical and horizontal communication bridges; marketing's flex.
The Mordell conjecture revisited

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Measurement of Separative Characteristics of H2-HT Isotope Separation Using Thermal Diffusion Column

Experiments of H2-HT isotope separation were carried out with a 0.3 mmo hot wire column of 30 mm in diameter and 1,500 mm in length. The column was operated at 0.1 MPa, and the temperature of Mo hot wire was regulated by the density of an electric current to be 773 or 988 K. An activity of tritium, whose value lay in the order of nCi/cm3, was measured by 200 cm3 flow-through ionization chambers, which were directly inserted to the flow lines of the feed, top and bottom draw-offs, respectively. The experimental results of dependence of flow rate and cut on separation factors were in good agreement qualitatively with those from theory based on a Newton iterative numerical solution of the two-dimensional convection-diffusion equation. A magnitude of separative power was, however, several times smaller than that from the analysis, when the ordinary diffusion coefficient and the thermal diffusion factor were obtained by the Chapman-Cowling formula and the Lennard-Jones (12-6) potential. Such a discrepancy in m.
Effect of sulfites on the in vitro antioxidant activity of wines

the objective of this study was to assess the contribution of sO 2 to the overall antioxidant activity of wines. In this study, white, red, and model wines, with increasing sulfite content, were used. the radical scavenging activity of the wines was evaluated by Abts and DPPH assays, while the reducing capacity of the wines was assessed by the FrAP assay. sO 2 positively affected the antioxidant properties of the wines and, in some cases, its contribution to the overall antioxidant activity of wines was higher than that of naturally occurring antioxidants. Depending on the assay, sO 2 showed both synergistic and antagonistic effects with the antioxidants naturally present in wines.