Miracle-dz/UniFAR-FTUs huggingface dataset:
Evaluation of User Contribution Value in the Virtual Brand Community

Virtual brand community has become the platform for users to obtain product knowledge, share experience and interact with other members. However, integrative research that investigates the process and possible contribution of these behaviors in the virtual brand community remains limited. Based on an extensive review of literature on user behavior, we divide user contribution value into user-contributed content value and user interaction value. Then we use weighted knowledge super-network model and weighted knowledge network model to estimate the value of users. We test our model with a dataset from a Chinese virtual brand community, Millet forum. According to the different features of users, we build a two-dimensional matrix of user contribution value. Our model and findings provide important implications for better understand and manage users in the virtual brand community.
Evaluation of genetic diversity in Sulla coronaria from different geographical populations in Tunisia by inter simple sequence repeat (ISSR)

Five oligonucleotides generating 116 markers complementary to simple sequence repeats were used in order to characterize wild and cultivated ecotypes of Sulla coronaria and assess genetic diversity suitable in breeding programs. While analysing populations, a large genetic variability was revealed and supported by the preferentially allogamous mating system of the species. Moreover, the highest level of intra-population variations (H pop /H sp = 69.9) either of wild or cultivated accessions have been strongly evidenced by a significant adaptation to variety of habitats. In addition, the structure of populations was independent from the bioclimatic stages and was not affected by environmental factors as shown by the non correlation between the geographic and the Nei and Li’s genetic distances (r= 0.461 and p=0.068>0.05). The unweighted pair group method with arithmetic mean (UPGMA) genetic relationships showed that some local spontaneous accessions characterised by an orthotropic port (Jebel Zit and Beja) were also molecularly similar to other cultivars. Key words : Sulla coronaria , wild and cultivated forms, intra and inter-populations variability, microsatellites (ISSRs), bioclimatic stages.
ON THE VALUE OF CONSTANCY, THE CONSTANCY OF VALUES, AND THE SINGULAR ROLE OF TIME IN FUNDAMENTAL PSYCHOPHYSICAL LAWS

Newton’s Law of Inertia was a slap in the face of intuitions on mechanical motion on earth;fundamental physical laws just are not generalizations across observable phenomena. Likethe physical prototype, fundamental psychophysical laws are hypothetico-deductive bynature, i.e. translate into observable trajectories for contingent physical constraints and taskdemands. They thus cannot be pinpointed behaviorally by strategies following the rulingempiricist ideology; nor can they physiologically. Rather, it is psychophysical constructs thatenable identification of parameterized physiological correlates (Fechner’s “FunctionalPrinciple”). It will be shown that well-known regularities are derivable from behaviorallyfoundedhypotheses about cyclic carriers, including two constants: self-similar orderinganchored on a base-level cycle; limited temporal coherence after entrainment; capability ofhierarchical phase coupling; undisturbed superposition; random selection-by-inhibitionimposed by external constraints. Most strikingly, EEG bands are correctly predicted inabsolute terms and both predicted quantal-range extensions and growth of dispersions turnout to be construct-based versions of empirical relations as advanced by Teghtsoonian.
Using an integrated hydrological model to estimate the usefulness of meteorological drought indices in a changing climate

Abstract. Droughts are serious natural hazards, especially in semi-arid regions. They are also difficult to characterize. Various summary metrics representing the dryness level, denoted drought indices, have been developed to quantify droughts. They typically lump meteorological variables and can thus directly be computed from the outputs of regional climate models in climate-change assessments. While it is generally accepted that drought risks in semi-arid climates will increase in the future, quantifying this increase using climate model outputs is a complex process that depends on the choice and the accuracy of the drought indices, among other factors. In this study, we compare seven meteorological drought indices that are commonly used to predict future droughts. Our goal is to assess the reliability of these indices to predict hydrological impacts of droughts under changing climatic conditions at the annual timescale. We simulate the hydrological responses of a small catchment in northern Spain to droughts in present and future climate, using an integrated hydrological model calibrated for different irrigation scenarios. We compute the correlation of meteorological drought indices with the simulated hydrological time series (discharge, groundwater levels, and water deficit) and compare changes in the relationships between hydrological variables and drought indices. While correlation coefficients linked with a specific drought index are similar for all tested land uses and climates, the relationship between drought indices and hydrological variables often differs between present and future climate. Drought indices based solely on precipitation often underestimate the hydrological impacts of future droughts, while drought indices that additionally include potential evapotranspiration sometimes overestimate the drought effects. In this study, the drought indices with the smallest bias were the rainfall anomaly index, the reconnaissance drought index, and the standardized precipitation evapotranspiration index. However, the efficiency of these drought indices depends on the hydrological variable of interest and the irrigation scenario. We conclude that meteorological drought indices are able to identify years with restricted water availability in present and future climate. However, these indices are not capable of estimating the severity of hydrological impacts of droughts in future climate. A well-calibrated hydrological model is necessary in this respect.
Design of an Amorphous In-Ga-Zn-O TFT Current-Scaling Pixel Driving Circuit for AMOLED with Threshold-voltage Shift Compensating

An Amorphous In-Ga-Zn-O TFT (a-IGZO TFTs) Current-Scaling Pixel Circuit for Active Matrix Organic Light-emitting Displays (AMOLEDs) is presented, it composes of four amorphous a-IGZO TFTs and one capacitor (4T-1C), which effectively compensates the threshold-voltage-shift (ΔVth≈1V) of the drive TFT as well as degradation of the OLED. In a monochromatic 2-inches QVGA AMOLED display, simulating results show that programming current between several pA and hundreds of nA can realize OLED luminance from 1cd/m 2 to 200cd/m 2 , and the aperture ratio of AMOLED with this pixel driving circuit is high as 80%.
Aging and Visual Serial Search for Schematic Emotional Faces

The aim of the present study was to examine serial visual processing of facial emotion in a group of younger and older adults. Participants performed a visual serial search task in which they searched displays of schematic faces with positive, negative or neutral mouth expressions. Our findings show that older adults did particularly well when detecting positive target faces. Differently, their response times were slower on positive faces compared to negative and neutral faces. Explanations in terms of attentional disengagement mechanisms that may generate an age-related positivity effect are discussed.
Action Research and the Practice of Design

Introduction The pioneer design work that was carried out in Europe and America during the first half of this century blossomed in the postwar years, growing in size and prosperity as creative expertise was combined with serious business acumen. One thinks principally of the Bauhaus, together with individuals such as Peter Behrens, Jan Tschichold, Piet Zwart, Alvar Aalto, and Raymond Loewy, as people who instinctively developed a profession out of their design practice. Richard Buchanan has summarized this rapid development as three stages: 1 Design began as a trade activity, closely connected to industrialization and the emergence of mass communication. After a period of time, professions began to emerge, with traditions of practice and conscious recognition of a distinct type of thinking and working that distinguished our profession from others. However, we are now witnessing the beginnings of the third era of design, marked by the emergence of design as a field or discipline.
Does the ‘island rule’ apply to birds? An analysis of morphological variation between insular and mainland birds from the Australian, New Zealand and Antarctic region

of a thesis submitted in partial fulfilment of the requirements for the Degree of Master of Science (Conservation and Ecology) Abstract Does the ‘island rule’ apply to birds? An analysis of morphological variation between insular and mainland birds from the Australian, New Zealand and Antarctic region by Elisa Diana Ruiz Ramos The ‘island rule’ states that large animals become smaller and small animals become larger on islands. Morphological shifts on islands have been generalized for all vertebrates as a strategy to better exploit limited resources in constrained areas with low interspecific competition and predation pressures. In the case of birds, most of the studies that validate this rule have focused on passerines, and it is unclear about whether the rule applies to other Orders. Studies suggested insular morphological shift in birds is for greater bill size variation within males and females from the same species, when compared to their mainland counterparts. Increased sexual size dimorphism in island species would represent a strategy for resource exploitation. These insular morphological shifts are thought to be influenced by an island’s environmental and physical characteristics. I tested the validity of the ‘island rule’ within different avian Orders of the Australian, New Zealand and Antarctic region. I compared and analysed existing morphological measurements for insular and mainland related species occurring in the region, linking them with abiotic features of each island using meta-analysis modelling. Overall, the estimated relative insular body size (i.e., SR= island size/mainland size) values showed little and inconsistent differences between mainland and insular closely-related bird species using wing, bill, tarsus and weight measurments as predictors of body size. The ‘island rule’ patterns were partially recognized for bill and tarsus length at the species level, but this weak trend did not prevail at the family or order level. The mean SRs for the assessed traits suggested a minor trend for birds to become larger on islands in spite of the body size of their mainland counterparts. There were no consistent differences between the degree of sexual size dimorphism in islands and mainland species. Island area, distance from mainland, and sea surface temperature were related to small SRs variation. However, because the mean SRs were so close to one, it was not clear if these abiotic
Comparative Phytochemical Screening And Antioxidant Activities of Calligonum Comosum And Calligonum Crjnitum

Medicinal plants are vital source of present day prescription and the majority of the recommended modern medications contain their subsidiaries. Calligonum comosum and Calligonum crinitum are perennial shrub plants growing in the United Arab Emirates, and are being utilized as a part of traditional medicinal system of UAE. The aims of proposed study were to evaluate and compare the phytochemical and antioxidant properties of these two plants. The extraction and fractionation were conducted by using petroleum ether, chloroform, ethyl acetate, acetone and methanol. The extracts were tested for their antioxidant activity. Phytochemical studies with total phenolics and flavonoid contents were analyzed by following standard methods. Along with this, proximate analysis with micro and macro elements were also estimated. In vitro antioxidant analysis were done by different methods. The results exhibited a positive linear correlation between these phytochemicals such as saponins, flavonoids, tannins, and terpenes and the free radical scavenging activities. Our results confirm that the extracts have potential antioxidants and this legitimizes their use in folkloric medicine. Hence, scientific validation of traditional knowledge can be accomplished in a preparatory level.
Power and Energy Implications of the Number of Threads Used on the Intel Xeon Phi

Energy consumption has become an important area of research of late. With the advent of new manycore processors, situations have arisen where not all the processors need to be active to reach an optimal relation between performance and energy usage. In this paper, a study of the power and energy usage of a series of benchmarks, the PARSEC and the SPLASH-2X Benchmark Suites, on the Intel Xeon Phi for different threads configurations, is presented. To carry out this study, a tool was designed to monitor and record the power usage in real time during execution time and afterwards to compare the results of executions with different number of parallel threads.
Zonal and Vertical Structure of the Madden–Julian Oscillation

Abstract A statistical study of the three-dimensional structure of the Madden–Julian oscillation (MJO) is carried out by projecting dynamical fields from reanalysis and radiosonde data onto space–time filtered outgoing longwave radiation (OLR) data. MJO convection is generally preceded by low-level convergence and upward motion in the lower troposphere, while subsidence, cooling, and drying prevail aloft. This leads to moistening of the boundary layer and the development of shallow convection, followed by a gradual and then more rapid lofting of moisture into the middle troposphere at the onset of deep convection. After the passage of the heaviest rainfall, a westerly wind burst region is accompanied by stratiform precipitation, where lower tropospheric subsidence and drying coincide with continuing upper tropospheric upward motion. The evolution of the heating field leads to a temperature structure that favors the growth of the MJO. The analysis also reveals distinct differences in the vertical structure.
Boiling process in oil coolers on porous elements

Holography and high-speed filming were used to reveal movements and deformations of the capillary and porous material, allowing to calculate thermo-hydraulic characteristics of boiling liquid in the porous structures. These porous structures work at the joint action of capillary and mass forces, which are generalised in the form of dependences used in the calculation for oil coolers in thermal power plants (TPP). Furthermore, the mechanism of the boiling process in porous structures in the field of mass forces is explained. The development process of water steam formation in the mesh porous structures working at joint action of gravitational and capillary forces is investigated. Certain regularities pertained to the internal characteristics of boiling in cells of porous structure are revealed, by means of a holographic interferometry and high-speed filming. Formulas for calculation of specific thermal streams through thermo-hydraulic characteristics of water steam formation in mesh structures are obtained, in relation to heat engineering of thermal power plants. This is the first calculation of heat flow through the thermal-hydraulic characteristics of the boiling process in a reticulated porous structure obtained by a photo film and holographic observations.
Mechanical and In-vitro Performance of CNT Reinforced Hydroxyapatite Prepared by a Shear Mixing Method

Lack of osteoinductivity and the problem of inherent brittleness are the two major challenges associated with hydroxyapatite (HAp), the main mineral component of bone. This imposes a limitation in its application as a load bearing orthopaedic implant material. The present work aims to overcome the problem of inherent brittleness of HAp by incorporating Carbon Nanotube (CNT) in the HAp matrix. A simple and cost effective shear mixing method was used to mix the CNT and the HAp in optimal proportion to develop the Hap-CNT nanocomposite. The composite was characterised using XRD, FTIR, HRTEM and FESEM techniques. Crystallinity of the composites was well above 99% with XRD clearly showing characteristics peaks of HAp. HRTEM of the sintered products showed flake like structure while FESEM showed fine microstructure of HAp with sporadic presence of CNT. It is observed that the nanocomposites possess improved fracture toughness with respect to that of pure HAp, which appears to be a great promise for bone tissue engineering. In-vitro studies of the samples, performed in Simulated Body Fluid (SBF) showed widespread growth of apatite crystals on the sample surface.
Statistical analysis of fine particle resuspension from rough surfaces by turbulent flows

ABSTRACTParticle resuspension plays a part in indoor aerosol dynamics and has received increasing attention due to its ability to prolong human exposure to airborne particles. A stochastic model of turbulence-induced particle resuspension from rough surfaces is proposed based on the statistical nature of the process. Deposited fine (micro- or nano-size) particles are generally immersed in the viscous sublayer of the incompressible turbulent boundary layer and are subjected to aerodynamic forces that can be approximated by log-normal distributions due to penetration of turbulent inrushes and bursts into the viscous sublayer. Similarly, the adhesion force between particles and surfaces could be approximated by statistical distributions according to the statistical nature of surface roughness. Three common types of adhesion force distributions, i.e. log-normal, Weibull, and Gaussian distributions, are specifically explored. Predicted resuspension fractions versus free stream velocity are in good agreement with experimental data reported in the literature. Using the proposed stochastic model, influences of various parameters (composite Young’s modulus, surface energy, adhesion force distribution, velocity distribution, fluid density, and particle diameter) on the threshold friction velocity (u*50) and friction velocity divergence (Δu*) are analysed. The information sheds light onto the controlling of the particle resuspension process. The proposed model extends the current capability of modeling particle resuspension by considering different types of adhesion force distributions.
Stellar contents and star formation in the young open cluster Stock 8

We present UBVIc CCD photometry of the young open cluster Stock 8 with the aim of studying its basic properties such as the amount of interstellar extinction, distance, age, stellar contents and initial mass function (IMF). We also studied the star formation scenario in this region. From optical data, the radius of the cluster is found to be ∼6 arcmin (∼3.6 pc) and the reddening within the cluster region varies from E(B − V) = 0.40 to 0.60 mag. The cluster is located at a distance of 2.05 ± 0.10 kpc. Using Hα slitless spectroscopy and Two Micron All Sky Survey (2MASS) near-infrared (NIR) data we identified Hα emission and NIR-excess young stellar objects (YSOs), respectively. From their locations in the colour‐magnitude diagrams, majority of them seem to have ages between 1 and 5 Myr. The spread in their ages indicate a possible noncoeval star formation in the cluster. Massive stars in the cluster region reveal an average age of 2 Myr. In the cluster region (r 6 arcmin) the slope of the mass function (MF), � , in the mass range ∼1.0 M/M� < 13.4 can be represented by a power law having a slope of −1.38 ± 0.12, which agrees well with Salpeter value (−1.35). In the mass range 0.3 M/M� < 1.0, the MF is also found to follow a power law with a shallower slope of � =− 0.58 ± 0.23 indicating a break in the slope of the IMF at ∼ 1M � . The slope of the K-band luminosity function for the cluster (r 6 arcmin) is found to be 0.31 ± 0.02, which is smaller than the average value (∼0.4) obtained for embedded star clusters. A significant number of YSOs are distributed along a Nebulous Stream towards the east side of the cluster. A small cluster is embedded in the Nebulous Stream. The YSOs lying in the Nebulous Stream and in the embedded cluster are found to be younger than the stars in the cluster Stock 8. The radio continuum, MSX, IRAS mid- and far-infrared maps and the ratio of [S II]/Hα intensities indicate that the eastern region of Stock 8 is ionization bounded whereas the western region is density bounded. The morphology seems to indicate that the ionization/shock front caused by the ionizing sources located in the Stock 8 region and westwards of Stock 8 has not reached the Nebulous Stream. It appears that star formation activity in the Nebulous Stream and embedded cluster may be independent from that of Stock 8.
The Examination of the Factors Determining Career Engagement for Students Preparing for a Social Job

Abstract The higher education courses for social experts started more than 25 years ago in Hungary. Since then more than 20 thousand students have earned a degree in social areas. Some of them quit their original jobs whereas a lot of these specialists still provide support as human assistants and regard their profession a career. Due to the huge amount of experience accumulated in both education and practice since then, in our empirical research an answer was sought to the question which personal and professional competencies determine the long-term engagement to a career and how the competency experience of the students correlates with their further career aspirations. In the research nearly 500 responses from students from 8 different Hungarian higher education institutions were analysed by applying questionnaires and tests accepted in international practice together with our own measures. Data were collected about the students’ career decision self-efficiency experiences, their personality traits and also about the question how they see their future profession. Based on our results the students who had a definite idea of their future professional career even during their studies and were determined with improved professional and personal competencies during the training made up a distinct group and were more dedicated to their career. On the basis of our analyses it was empirically proved that the training types which provide opportunities for the conscious monitoring of personal and professional competencies by encouraging the student with their career adjustment are of great significance.
A MANAGERIAL AND COST ACCOUNTING APPROACH OF CUSTOMER PROFITABILITY ANALYSIS

In the last years many organizations realized that market orientation is essential to their success. Satisfying the needs of customers, offering them products and services which meet their desires and demands, customer loyalty can increase profitability for long term. After analyzing the existing journal literature in this field we would like to emphasize that managerial accounting, cost calculation methods and techniques, the analysis of costs provides relevant information when analyzing the customer’s profitability. We pay special attention on cost systems. An activity based costing approach takes customer profitability to new levels of accuracy and usefulness, provides the basis for creating, communicating and delivering value to the customers.