Miracle-dz/UniFAR-FTUs huggingface dataset:
Online Sellers' Trust and Use of Online Auction Marketplaces

More and more people sell things online and trust is an important factor in online selling. This research is aimed at understanding the roles of trust in online sellers' continued use of online auction marketplaces. Given the uniqueness of online auction practice, we identify the need for differentiating sellers' trust in the intermediary and in buyers. A balanced view of cognitive and affective trust is incorporated with the Motivational Model of technology acceptance to predict sellers' use of online auction marketplaces. Empirical data collected from online auction sellers in uBid.com confirmed our model. Specifically, our findings show that, for online auction sellers, (1) trust has both cognitive and affective components; (2) trust in the intermediary (e.g., eBay.com) impacts trust in the community of buyers through the trust transference mechanism; (3) trusting attitudes antecede user acceptance and use factors including perceived usefulness and perceived enjoyment, which in turn influence sellers' intention to return;; and (4) perceived enjoyment is an important antecedent of sellers' retention. Besides theoretical contributions, this research also has practical implications.
PENGARUH LINGKUNGAN TEMAN SEBAYA TERHADAP PERILAKU SOSIAL ANAK USIA 5-6 TAHUN

The child spends a lot of time interacting in the outer environment with peers in various activities. They showed symptoms of sharing tasks, competition, contention, sympathy, slings help in facing difficulties. This picture shows symptoms of social behavior, there is a good social behavior and social behavior is not good. The purpose of this study is to determine the influence of peer environment on the social behavior of children aged 5-6 years in Kindergarten Humairoh Kubang Jaya Village Siak Hulu District Kampar Regency. This research uses the form of quantitative research with correlational approach. Data collection techniques used in this study is observation. This study uses statistical analysis in the form of chi-square method. The results showed that the peer environment has a strong influence on the social behavior of children. This can be seen from the average score of social and environmental behavior of peers obtained in good category (77.55%) and (74.42%). From the result of the research, it is found that the value of χ² = 19.54 and χ²table = 9.49 so that χ²count ≥ χ²table or 19.54 ≥ 9,49 thus the null hypothesis (Ho) is rejected, that is there is a significant influence from peer environment to social behavior of children aged 5-6 years in Kindergarten Humairoh Kubang Jaya Village Siak Hulu District Kampar District. The effect of variable X to Y is 57%.
Deforestation and forest land use : a comment

Hyde, Amacher, and Magrath (1996) imply that deforestation and timber rents (logging revenue minus logging costs other than timber fees) are not subjects that justify policymakers' attention, arguing that market responses limit the scope of deforestation and that rents are usually small. But they fail to recognize that land markets will not develop efficiently, nor will efficient levels of forestry investments occur, when policy distortions and other factors obstruct the conversion of open-access forests to private or communal ownership. For these reasons rates of deforestation can be far above optimal levels. Contrary to the authors' claims, timber rents often (although not always) are large in developing countries. Moreover, the allocation of rents between loggers and the government owners of public forests can indeed affect the profitability of forestry (and thus deforestation), the intensity of timber harvesting, and national welfare.
Local home bias: Theory and new empirical evidence from Italy

This thesis examines the literature on local home bias, i.e. investor preference towards geographically nearby stocks, and investigates the role of firm’s visibility, profitability, and opacity in explaining such behavior. While firm’s visibility is expected to proxy for the behavioral root originating such a preference, firm’s profitability and opacity are expected to capture the informational one. I find that less visible, and more profitable and opaque firms, conditionally to the demand, benefit from being headquartered in regions characterized by a scarcity of listed firms (local supply of stocks). Specifically, research estimates suggest that firms headquartered in regions with a poor supply of stocks would be worth i) 11 percent more if non-visible, non-profitable and non-opaque; ii) 16 percent more if profitable; and iii) 28 percent more if both profitable and opaque. Overall, as these features are able to explain most, albeit not all, of the local home bias effect, I reasonably argue and then assess that most of the preference for local is determined by a successful attempt to exploit local information advantage (60 percent), while the rest is determined by a mere (irrational) feeling of familiarity with the local firm (40 percent). Several and significant methodological, theoretical, and practical implications come out.
HST Detections of Massive Black Holes in the Centers of Galaxies

After correcting spherical aberration in the Hubble Space Telescope in 1993, the central masses of galaxies can be measured with a resolution 5 to 10 times better than can be achieved at the best terrestrial sites. This improvement in resolution is decisive for detecting the gravitational signature of massive black holes in galaxy nuclei. The discovery of small (r ~ 100-200 pc) rotating gaseous and stellar disks in the centers of many early-type galaxies provides a new and efficient means for measuring the central potentials of galaxies. Concomitantly, VLBI observations of water masers in the nuclei of NGC 4258 and NGC 1068 revealed exquisite Keplerian rotation curves around massive black holes at radii as small as 0.1 pc. Recent terrestrial K-band measurements of the proper motions of stars in the cluster at the center of the Galaxy provide irrefutable evidence for a black hole with a mass of 2.7E+6 M_sun. At the time of this symposium, the presence of central massive black holes has been established in 12 galaxies. The evidence suggests that there are massive black holes in the centers of all AGNs and in most, if not all, nucleated galaxies. The present data show at best a weak correlation between black hole mass and bulge luminosity.
Improving Service Delivery: Investigating the Role of Information Sharing, Job Characteristics, and Employee Satisfaction.

Purpose – The purpose of this study is to propose and test a model designed to investigate the impact of job characteristics, employee satisfaction, and information sharing on two key indicators of quality service delivery, such as worker perceptions of their efficiency and customer focus.Design/methodology/approach – During the project, 9,060 employees of a large national telecommunications organization in North America provided information in two surveys six months apart. The model was tested by using the PLS (Partial Least Squares) procedure.Findings – The results found support for the proposed model, indicating that autonomy and challenging work contribute to employee satisfaction, and that employee satisfaction and information sharing relate to greater reported efficiency and customer focus. The results and their implications are discussed.Research limitations/implications – The key limitation of this project is that the suggested model was tested in only one organization in one industry. In future, .
Capillary breakup extensional rheometry of a wormlike micellar solution

The behaviour of a cetylpyridinium chloride/sodium salicylate wormlike micellar system undergoing capillary breakup is investigated experimentally. The transient elongational flow induced in a thinning thread is used to study the apparent viscosity and effective relaxation time of the micellar network in extension. The sensitivity of the material response to initial conditions and deformation history is explored by varying the endplate diameter of the capillary breakup rheometer and the initial step strain imposed on the sample. Local regimes in which the extensional viscosity shows constant (Newtonian), weak extensional thinning and strong extensional thickening are observed depending on the accumulated strain and strain rate. For this concentrated micellar network, the relaxation time determined in extension was found to be independent of the initial configuration and in close agreement with the value measured in shear flow.
An Olfactory Circuit Increases the Fidelity of Visual Behavior

Multimodal integration allows neural circuits to be activated in a behaviorally context-specific manner. In the case of odor plume tracking by Drosophila, an attractive odorant increases the influence of yaw-optic flow on steering behavior in flight, which enhances visual stability reflexes, resulting in straighter flight trajectories within an odor plume. However, it is not well understood whether context-specific changes in optomotor behavior are the result of an increased sensitivity to motion inputs (e.g., through increased visual attention) or direct scaling of motor outputs (i.e., increased steering gain). We address this question by examining the optomotor behavior of Drosophila melanogaster in a tethered flight assay and demonstrate that whereas olfactory cues decrease the gain of the optomotor response to sideslip optic flow, they concomitantly increase the gain of the yaw optomotor response by enhancing the animal's ability to follow transient visual perturbations. Furthermore, ablating the mushroom bodies (MBs) of the fly brain via larval hydroxyurea (HU) treatment results in a loss of olfaction-dependent increase in yaw optomotor fidelity. By expressing either tetanus toxin light chain or diphtheria toxin in gal4-defined neural circuits, we were able to replicate the loss of function observed in the HU treatment within the lines expressing broadly in the mushroom bodies, but not within specific mushroom body lobes. Finally, we were able to genetically separate the yaw responses and sideslip responses in our behavioral assay. Together, our results implicate the MBs in a fast-acting, memory-independent olfactory modification of a visual reflex that is critical for flight control.
No-Arbitrage Valuation of Contingent Claims in Discrete Time

Following Harrison and Kreps (1979) and Harrison and Pliska (1981), the valuation of contingent claims in continuous-time and discrete-time finite state space settings is generally based on the no-arbitrage principle, and the use of an equivalent martingale measure. In contrast, for some of the most popular discrete time processes used in finance, such as GARCH processes, the existing literature exclusively uses equilibrium arguments based on the specification of a pricing kernel or a representative agent. We demonstrate that contingent claims can be valued in a conditionally lognormal, discrete time, infinite statespace setup using only the no-arbitrage principle and an equivalent martingale measure which we characterize. Our valuation framework allows for conditionally heteroskedastic stock returns (e.g. GARCH) and generalizes the processes for stock returns investigated in Duan (1995) and Heston and Nandi (2000) by allowing for time-varying interest rates and a time-varying price of risk.
Ears, heads, and eyes: When singers synchronise

We examined the relationship between endogenous rhythms, auditory and visual cues, and body movement in the temporal coordination of duet singers. Sixteen pairs of experienced vocalists sang a familiar melody in Solo and two Duet conditions. Vocalists sang together in Unison (simultaneously producing identical pitches) and Round Duet conditions (one vocalist, the Follower, producing pitches at an eight-tone delay from their partner, the Leader) while facing Inward (full visual cues) and Outward (reduced visual cues). Larger tempo differences in partners’ spontaneous (temporally unconstrained) Solo performances were associated with larger asynchrony in Duet performances, consistent with coupling predictions for oscillators with similar natural frequencies. Vocalists were slightly but consistently more synchronous in Duets when facing their partner (Inward) than when facing Outward; Unison and Round performances were equally synchronous. The greater difficulty of Rounds production was evidenced in vocalists’ slower performance rates and more variable head movements; Followers directed their head gaze away from their partner and used bobbing head movements to mark the musical beat. The strength of Followers’ head movements corresponded to the amount of tone onset asynchrony with their partners, indicating a strong association between timing and movement under increased attentional and working memory demands in music performance.
Testing the taxonomic integrity of Paranthropus boisei sensu stricto.

The craniodental hypodigm of Paranthropus boisei sensu stricto is morphologically distinctive, but it has been suggested that the substantial variation in mandibular and dental size in that hypodigm may exceed that which is reasonable to subsume within a single hominin species. In this study, Fligner and Killeen, coefficient of variation (CV)-based and average taxonomic distance (ATD)-based bootstrap tests, were used to compare variation in size and shape of the mandibular corpus remains attributed to P. boisei s.s. with the variation observed in samples of great apes and modern humans. The degree of size variation in the P. boisei s.s. mandibular hypodigm is never observed in human and chimpanzee samples, is rare in gorillas, but is not uncommon in orangutans. However, the shape variation in the fossil group is comparable to the variation in the extant reference groups. Although the size variation in P. boisei s.s. is substantial, it is exaggerated by the effects of taphonomy. The small mandibles are more often abraded, whereas the large mandibles are more likely to have been infiltrated with matrix. On the basis of the results of this investigation of the mandibular corpus, there are no grounds for rejecting the "single-species" hypothesis for P. boisei s.s. When Sokal and Braumann's adjusted CV values were used to predict the index of sexual dimorphism (ISD) for the P. boisei s.s. , despite the substantial geological time embraced by the mandibular corpus hypodigm, the predicted value of lnISD, when corrected for taphonomic factors, is comparable to the sexual dimorphism observed within Gorilla.
Teenagers and Welfare Reform.

When Congress passed the Personal Responsibility and Work Opportunity Act of 1996, teenage parents were on center stage. They were likely to end up on welfare, reported researchers, and their children were likely to experience poor health, have a hard time in school, become teen parents themselves, and spend time in prison. In an effort to respond to these concerns, two provisions were added to the welfare bill, one mandating that teen parents attend school, and a second requiring that they live with a parent or with a responsible adult, as a condition for receiving cash assistance.1
Low bone mineral density, renal dysfunction, and fracture risk in HIV infection: a cross-sectional study.

BACKGROUND Reduced bone mineral density (BMD) is common in adults infected with human immunodeficiency virus (HIV). The role of proximal renal tubular dysfunction (PRTD) and alterations in bone metabolism in HIV-related low BMD are incompletely understood. METHODS We quantified BMD (dual-energy x-ray absorptiometry), blood and urinary markers of bone metabolism and renal function, and risk factors for low BMD (hip or spine T score, -1 or less) in an ambulatory care setting. We determined factors associated with low BMD and calculated 10-year fracture risks using the World Health Organization FRAX equation. RESULTS We studied 153 adults (98% men; median age, 48 years; median body mass index, 24.5; 67 [44%] were receiving tenofovir, 81 [53%] were receiving a boosted protease inhibitor [PI]). Sixty-five participants (42%) had low BMD, and 11 (7%) had PRTD. PI therapy was associated with low BMD in multivariable analysis (odds ratio, 2.69; 95% confidence interval, 1.09-6.63). Tenofovir use was associated with increased osteoblast and osteoclast activity (P< or = .002). The mean estimated 10-year risks were 1.2% for hip fracture and 5.4% for any major osteoporotic fracture. CONCLUSIONS In this mostly male population, low BMD was significantly associated with PI therapy. Tenofovir recipients showed evidence of increased bone turnover. Measurement of BMD and estimation of fracture risk may be warranted in treated HIV-infected adults.
‘New’ Social Theory? Abbott and Social Studies of Finance

This article uses an analysis of social studies of finance to explore Andrew Abbott’s ideas about how we construct ‘new’ social theory. Drawing on Abbott, it is argued that social studies of finance tend as much towards the recycling of existing conjecture as the presentation of markedly novel argument. Yet Abbott’s position also questions such potential critique by suggesting that theoretical recycling and recombination represent ‘normal’, and often creative, academic behaviour.
Bio-inspired model for robust motion detection under noisy conditions

The neuronal pathway for biological motion vision is complex and non-linear. Despite considerable research effort it has defied accurate modelling for over 50 years. Recently we proposed a computational model for the calculation of egomotion that explained a number of outstanding issues, such as reliable coding in different environments and responses to artificially contrast rescaled images. Here we varied the amount of noise to determine the robustness of the model under conditions more typical of real-world scenes. High-dynamic range panoramic images taken from various environments were used as inputs to a computational motion model of biological motion vision. Gaussian white noise was added after image pre-processing but before motion detection. The addition of noise around the levels observed experimentally, in both biology and an engineered camera system, resulted in a surprising 50% increase in the discriminability of different velocity levels over that seen in the noise free condition. The more commonly used gradient model for motion detection produced outputs so swamped by noise they were unreliable under the same conditions. While the phenomenon of stochastic resonance has been observed previously in biological and bio-inspired systems it is most commonly found in conjunction with non-linear thresholding operations, such as spike generation. These findings are unusual as they show noise being beneficial in a model of an analogue system. They also highlight the robustness of the correlation model for biological motion detection to very large levels of noise.
Latency sensitivity-based cache partitioning for heterogeneous multi-core architecture

Shared last-level cache (LLC) management is a critical design issue for heterogeneous multi-cores. In this paper, we observe two major challenges: the contribution of LLC latency to overall performance varies among applications/cores and also across time; overlooking the off-chip latency factor often leads to adverse effects on overall performance. Hence, we propose a Latency Sensitivity-based Cache Partitioning (LSP) framework, including a lightweight runtime mechanism to quantify the latency-sensitivity and a new cost function to guide the LLC partitioning. Results show that LSP improves the overall throughput by 8% on average (27% at most), compared with the state-of-the-art partitioning mechanism, TAP.
ANALISIS PENGARUH RASIO KEUANGAN DAN MAKRO EKONOMI TERHADAP HARGA SAHAMPada Perusahaan LQ 45 Yang Terdaftar Di Bursa Efek Indonesia (BEI) Tahun 2007-2011

The aims of this study are to analyze the effect of Return on Equity (ROE), Current Ratio (CR), Debt to Equity Ratio (DER), Oil Prices, and Inflation Sensitivity on Stock Prices. This study was taken because there are still differences between the research study with each other and there is a difference between the real state of research study with each other and there is a difference between the real of research data with existing theory. This research was conducted using secondary data. Sampling technique used was purposive sampling. From twenty three companies, only thirteen are selected, because the financial statement from each company are complete since 2007-2011. The analysis method used is multiple linear regression analysis. By using regression analysis, this study provides evidence that Return on Equity haven’t significant positive effect on stock prices. Current Ratio have significant negative effect on stock prices. Debt to Equity Ratio have significant negative effect on stock prices. Oil Prices have significant positive effect on stock prices. Inflation Sensitivity have significant negative effect on stock prices. The value of adjusted R square is 26.6%. This means that 73.4% Stock Prices movement can be predicted from the movement of the five independent variables.
Perceived mathematical ability under challenge: a longitudinal perspective on sex segregation among STEM degree fields

Students' perceptions of their mathematics ability vary by gender and seem to influence science, technology, engineering, and mathematics (STEM) degree choice. Related, students' perceptions during academic difficulty are increasingly studied in educational psychology, suggesting a link between such perceptions and task persistence. Despite interest in examining the gender disparities in STEM, these concepts have not been considered in tandem. In this manuscript, we investigate how perceived ability under challenge—in particular in mathematics domains—influences entry into the most sex-segregated and mathematics-intensive undergraduate degrees: physics, engineering, mathematics, and computer science (PEMC). Using nationally representative Education Longitudinal Study of 2002 (ELS) data, we estimate the influence of perceived ability under challenging conditions on advanced high school science course taking, selection of an intended STEM major, and specific major type 2 years after high school. Demonstrating the importance of specificity when discussing how gender influences STEM career pathways, the intersecting effects of gender and perceived ability under mathematics challenge were distinct for each scientific major category. Perceived ability under challenge in secondary school varied by gender, and was highly predictive of selecting PEMC and health sciences majors. Notably, women's 12th grade perceptions of their ability under mathematics challenge increased their probability of selecting PEMC majors over and above biology. In addition, gender moderated the effect of growth mindset on students' selection of health science majors. Perceptions of ability under challenge in general and verbal domains also influenced retention in and declaration of certain STEM majors. The implications of these results are discussed, with particular attention to access to advanced scientific coursework in high school and interventions aimed at enhancing young women's perceptions of their ability, in particular in response to the potentially inhibiting influence of stereotype threat on their pathways to scientific degrees.