Miracle-dz/UniFAR-FTUs huggingface dataset:
Adoption vs acceptance of e‐commerce: two different decisions

Purpose – The main objective of this paper is to compare the differences that exist between the adoption of e‐commerce by potential purchasers and the acceptance of the channel (re‐purchase decisions) by experienced e‐customers. Therefore, the paper seeks to test the influence of online shopping experience on electronic purchase decisions.Design/methodology/approach – The conceptual model, an extended technology acceptance model (TAM), is tested using structural equation modelling techniques. In addition, the variations that exist in e‐customer behaviour are checked using a multi‐sampling analysis.Findings – The findings show that the influence of self‐efficacy and usefulness increases as the consumer gains online shopping experience. The motivations that lead a potential e‐customer to make a purchase are not the same as those that influence an experienced customer. The paper demonstrates the evolution of customer behaviour and the need to differentiate the perceptions of consumers depending on their leve.
A descriptive analysis of Chibrazi the urban contact vernacular language of Malawi : a focus on the lexicon and semantic manipulation

Over the years, the language profile of Malaŵi has transformed from a ‘purist’ orientation to a hybrid orientation. Apart from the traditional ethnic languages of the country, there is a language practice or speech style that is generally characterised by the mixing of elements from different languages of the country as well as those from outside. This development has been influenced by language contact, a situation that occurs when speakers of different languages or speech varieties interact thereby bringing their respective languages into interaction as well; and ultimately, bringing about changes of different kinds to the linguistic landscape of the area involved. This study refers to this language practice or speech style as Chibrazi, the urban contact vernacular language of Malaŵi and defines it as a communication tool in which meaning is encoded by inserting vocabulary drawn from a unique body of lexical items into the grammatical structures of the traditional ethnic languages of Malaŵi. Although Chibrazi is widespread across the country, it remains conspicuously absent in scholarly literature as well as in national documents such as the constitution and the national language policy. It can thus be said that Chibrazi largely remains unknown, even though it is very popular. In response to this situation, this study provides a basic descriptive analysis of Chibrazi, focusing on semantic manipulation in the production of the lexicon of the language thereby demonstrating that there is a new mixed language that is emerging within Malaŵi’s language profile. The research answers questions such as:
Protective effect of an ERAP1 haplotype in ankylosing spondylitis: investigating non-MHC genes in HLA-B27-positive individuals.

OBJECTIVE The association of non-MHC genes with AS has been recently suggested. We aimed to investigate the association of the ERAP1, IL23R and TNFSF15 regions and the susceptibility to and protection from AS in HLA-B27-positive individuals. METHODS A total of 200 unrelated AS patients and 559 healthy unrelated subjects, all HLA-B27 positive, were tested. Twenty single nucleotide polymorphisms (SNPs) were investigated in and near IL23R (nine SNPs), in ERAP1 (five SNPs) and in TNFSF15 (six SNPs). RESULTS ERAP1 rs30187 [odds ratio (OR) = 1.5, P = 4.7 × 10(-3)] had the strongest association with AS susceptibility. A protective effect was found in three of the ERAP1 SNPs: rs17482078 (OR = 0.7, P = 2.8 × 10(-2)), rs10050860 (OR = 0.7, P = 2.3 × 10(-2)), rs2287987 (OR = 0.6, P = 1.3 × 10(-2)). The ERAP1 haplotype rs17482078/rs10050860/rs30187/rs2287987-CCTT showed an association with AS susceptibility (P = 6.8 × 10(-3)) and a protective effect was identified in rs17482078/rs10050860/rs30187/rs2287987-TTCC (P = 3.1 × 10(-2)). Significant association with AS susceptibility was found in one IL23R marker (rs1004819, P = 4.3 × 10(-2), OR = 1.3). No associations were observed in the TNFSF15 region. CONCLUSION The identification of a new protection haplotype in ERAP1 and the lack of association of the TNFSF15 region can provide new insights into the understanding of the mechanisms underlying the susceptibility to and protection from AS.
The GSI capability to assimilate TRMM and GPM hydrometeor retrievals in HWRF

Hurricane forecasting skills may be improved by utilizing increased precipitation observations available from the Global Precipitation Measurement mission (GPM). This study adds to the Gridpoint Statistical Interpolation (GSI) capability to assimilate satellite‐retrieved hydrometeor profile data in the operational Hurricane Weather Research and Forecasting (HWRF) system. The newly developed Hurricane Goddard Profiling (GPROF) algorithm produces Tropical Rainfall Measuring Mission (TRMM)/GPM hydrometeor retrievals specifically for hurricanes. Two new observation operators are developed and implemented in GSI to assimilate Hurricane GPROF retrieved hydrometeors in HWRF. They are based on the assumption that all water vapour in excess of saturation with respect to ice or liquid is immediately condensed out. Two sets of single observation experiments that include assimilation of solid or liquid hydrometeor from Hurricane GPROF are performed. Results suggest that assimilating single retrieved solid or liquid hydrometeor information impacts the current set of control variables of GSI by adjusting the environment that includes temperature, pressure and moisture fields toward saturation with respect to ice or liquid. These results are explained in a physically consistent manner, implying satisfactory observation operators and meaningful structure of background error covariance employed by GSI. Applied to two real hurricane cases, Leslie (2012) and Gonzalo (2014), the assimilation of the Hurricane GPROF data in the innermost domain of HWRF shows a physically reasonable adjustment and an improvement of the analysis compared to observations. However, the impact of assimilating the Hurricane GPROF retrieved hydrometeors on the subsequent HWRF forecasts, measured by hurricane tracks, intensities, sizes, satellite‐retrieved rain rates, and corresponding infrared images, is inconclusive. Possible causes are discussed.
Analyzing play experience sensitivity to input sensor noise in outdoor augmented reality smartphone games

Augmented reality games overlay digital artifacts on a camera feed of the environment to create fantastic experiences in the real world. The act of overlaying digital artifacts on a real environment requires detailed information about the relative pose of the player and digital artifacts be accurately sensed and computed, which is often beyond the capacity of sensor systems deployed on commercial devices such as smartphones. Game developers are adept at creating compelling experiences from a limited or noisy palette of interactions, but have limited guidance in the case of augmented reality games. In this paper, we present a novel technique for evaluating the sensitivity of augmented reality games and game mechanics to input noise by modifying the sensor input stream of an open source operating system in a controlled manner. Any game, commercial or academic, that runs on that operating system can be systematically tested for the user experience impact of differing levels of sensor input noise. We perform such an experiment on two commercial and one academic game and determine that similar levels of input noise have very different impacts on user experience depending on the game design, input modality, and narrative. The differential impact of noise on user experience is important because it indicates that proper design decisions can be used ameliorate or mask sensor noise issues.
Phytotoxic Terpenoids from Ligularia cymbulifera Roots

Ligularia cymbulifera is one of the predominant species in the Hengduan Mountains, China, and has led to a decrease in the amount of forage grass in this area. However, little is known about the mechanism behind its predominance. In this study, two novel eremophilane sesquiterpenes, ligulacymirin A and B (1 and 2), together with seven other known terpenoids (3–9), were isolated from the roots of L. cymbulifera. The structures of 1 and 2 were determined by spectroscopic methods and single-crystal X-ray diffraction. Each compound showed phytotoxic activities against Arabidopsis thaliana, and each was detected and identified in rhizosphere soil by UHPLC-MS. Compound 3 was the most potent phytotoxin, showing remarkable inhibition against both seedling growth (EC50 = 30.33 ± 0.94 μg/mL) and seed germination (EC50 = 155.13 ± 0.52 μg/mL), with an average content in rhizosphere soil of 3.44 μg/g. These results indicate that terpenoids in L. cymbulifera roots might be released as phytotoxins in rhizosphere soil to interfere with neighboring plants.
Fibroblast Growth Factor 2 (FGF-2) Promotes Acquisition of Epidermal Growth Factor (EGF) Responsiveness in Mouse Striatal Precursor Cells: Identification of Neural Precursors Responding to both EGF and FGF-2

Epidermal growth factor (EGF) and fibroblast growth factor 2 (FGF-2) induce the proliferation of neural precursor cells isolated from specific regions of the embryonic and adult brain. However, the lineage relationship between the EGF- and FGF-2-responsive cells is unknown. In this study we used phosphorylation of the transcription factor cAMP response element-binding protein as a functional readout to identify cells responding to EGF and FGF-2. In primary cultures of mouse embryonic day 14 (E14) striatum, maintained in vitro for 24 hr, 12% of the cells responded to FGF-2, whereas no response to EGF could be detected. Seventy-five percent of these FGF-2-responsive cells were β tubulin III (TuJ1)-positive neurons, and 25% expressed nestin, a marker for neuroepithelial precursors. After growth factor treatment for 6 d, a population of nestin-positive cells responding to both EGF and FGF-2 were identified. The 6-d-old cultures also contained a small number of TuJ1-positive cells that responded to FGF-2 only. Priming of striatal cells for 24 hr with FGF-2 but not with EGF was sufficient to induce the appearance of EGF- and FGF-2 responsive cells after only 2 d in vitro. Thus, neural precursor cells from the mouse E14 striatum initially responding to FGF-2 only acquire EGF responsiveness later during in vitro development. At this stage EGF and FGF-2 act on the same cells. The acquisition of EGF responsiveness is promoted by FGF-2.
Assessing “Economic Value”

Diminishing marginal utility (DMU) is a basic tenet of economic and psychological models of judgment and choice, but its determinants are little understood. In the research reported here, we tested whether insensitivities in valuations of dollar amounts (e.g., $40, $100) may be due to inexact mappings of symbolic numbers (i.e., “40,” “100”) onto mental magnitudes. In three studies, we demonstrated that inexact mappings appear to guide valuation and mediate numeracy’s relations with riskless valuations (Studies 1 and 1a) and risky choices (Study 2). The results highlight the fundamental notion that individuals’ valuations of $100 depend critically on how individuals perceive and map the symbolic quantity “100. ” This notion has implications for conceptualizations of value, risk aversion, intertemporal choice, and dual-process theories of decision making. Normative implications are also briefly discussed.
The Timing of Resource Development and Sustainable Competitive Advantage

We develop a formal model of the timing of resource development by competing firms. Our aim is to deepen and extend resource-level theorizing about sustainable competitive advantage. Our analysis formalizes the notion of barriers to imitation, particularly those based on time compression diseconomies where the faster a firm develops a resource, the greater the cost. Time compression diseconomies are derived from a micromodel of resource development with diminishing returns to effort. We use a continuous time model of the flows of development costs and market revenues, which allows us to integrate strategic and financial analyses of firm investment problems. We examine two dimensions of sustainability: whether the resources underlying a firm's competitive advantage are economically imitable and, if so, how long imitation takes. Surprisingly, we show that sustainable competitive advantage does not necessarily lead to superior performance. We find that imitators sometimes benefit from reductions in their absorptive capacity and that innovators should license either all or none of their knowledge. Despite recent criticisms, we reaffirm the usefulness of a resource level of analysis for strategy research, especially when the focus is on resources developed through internal projects with identifiable stopping times.
A comparison between antenatal care quality in public and private sector in rural Hebei, China

Aim To evaluate the quality of antenatal care (ANC) in Hebei Province and compare it between the public and private sector and within the public sector. Methods We conducted a Maternal, Newborn and Child Health Household Survey in 2010 using a two-stage sampling procedure and included 1079 mothers. The quality of ANC was assessed on the basis of the number of ANC visits, the time of the first ANC visit, 16 different ANC procedures, owning a maternal health care booklet, and the type of service provider. Results Almost all women (98%) received ANC services at least once, 80% at least four times, and 54% at least five times. About half of the women (46%) visited ANC facility within their first trimester. Neither public nor private sector provided all 16 standardized services, but significantly more women in public sector received ANC procedures. Most women received ANC in county or higher-level hospitals (75%) and very few in township hospitals (8%). Significantly fewer women were weighed and tested for HIV/AIDS in township than in county or higher-level hospitals. Conclusion The quality of ANC in Hebei was poorer than required by China’s national and World Health Organization norms. Although the public sector performed better than the private sector, the utilization and quality of care of ANC services in this sector varied and women generally visited county or higher-level health facilities.
Use of health care among the urban poor in Africa: Does the neighbourhood have an impact?

The aim of this paper is to evaluate the relative influence of neighbourhood and individual practices of care utilization in Dakar (Senegal). The data from a research program on urban malaria, made in Dakar, Senegal between 2008 and 2009. The sample was based on a two-stage sampling. A questionnaire survey covered 2952 households, of which we have selected those that have at least one case of fever (n = 1272) with one of their children under ten years two weeks before the passage of investigators. The analytical model of the use of health services developed by R. Andersen has been adapted for our conceptual framework. Our results showed's like many West African cities, self-medication is a common practice among all households in Dakar, especially the poorest. The non-use of health services is positively associated with individual characteristics such as education level, the level of social network and the level of health literacy of the mother / guardian of the sick child (p
Cutting Edge: Secondary Lymphoid Organs Are Essential for Maintaining the CD4, But Not CD8, Naive T Cell Pool1

Despite declining thymic output with age, the peripheral naive T cell pool of an adult animal remains remarkably stable. Therefore, a central question in immunology is how the naive T cell pool is maintained. Here we show that the maintenance of the naive CD4, but not CD8, T cell population in the thymectomized adult mouse is dependent on the presence of secondary lymphoid tissues. This finding is explained by the inability of naive CD4 T cells to sustain normal levels of the survival molecule Bcl-2 or to undergo homeostatic proliferation in the absence of secondary lymphoid organs. Thus, naive CD4 T cells must traffic through secondary lymphoid organs to maintain a stable CD4 pool while naive CD8 T cells encounter their survival and proliferation signals outside the organized structures of secondary lymphoid tissues.
Countervailing Power in the Icelandic Cement Industry

The Icelandic Competition Council recently ruled that a cement supplier with 75% market share did not enjoy a dominant position. The ruling was based on countervailing power of local concrete producers. To test whether there are economic arguments for the ruling, we present a simplified model of the industry and apply and adapt some recent work on bilateral oligopoly. We show that, in equilibrium, it may be rational for buyers, given that some buying firms have switched to an entrant, to stay with a less efficient incumbent. The latter buyers negotiate contracts with the incumbent that are not as advantageous as those the entrant offers, but better than those that would prevail in monopoly of the entrant. This version: October 15 2003 ∗ Corresponding author: Fridrik M. Baldursson, Department of Economics, University of Iceland, 101 Reykjavik; fmbald@hi.is , tel. +354 5255273, fax +354 5526806.
What support resources contribute to family quality of life among religious and secular Jewish families of children with developmental disability?†

ABSTRACT Background Research in the field of family quality of life (FQOL) emphasises the importance of attainable support resources for families of children with developmental disability (DD). In this study we explored FQOL by examining some of its specific domains and expanded upon them. The 2 main aims were to examine differences in FQOL according to the degree of religiosity among Israeli Jewish families and to investigate the contribution of family, social, and governmental service support, as well as religion and spirituality to FQOL. Method Parents from 170 Jewish families of children with DD aged 3 to 14 years completed a self-administered questionnaire, which included the Family Quality of Life Survey – 2006 and instruments measuring family support, social support, support from governmental services, and support through religion and spirituality. Results Religious families reported a higher FQOL in comparison with secular families. No differences were found, however, between religious and secular families regarding familial, social, and service supports. Familial support and religious and spiritual support were found to contribute to the FQOL of religious families, whereas social support contributed to the FQOL of secular families. Conclusion These findings help clarify which supporting factors predict the FQOL for families living in Israel. Suitable support resources should be offered to families raising children with DD in order to enhance their FQOL.
NTT, SPITZER, AND CHANDRA SPECTROSCOPY OF SDSSJ095209.56+214313.3: THE MOST LUMINOUS CORONAL-LINE SUPERNOVA EVER OBSERVED, OR A STELLAR TIDAL DISRUPTION EVENT?

The galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter) showed remarkable emission-line and continuum properties and strong emission-line variability first reported in 2008 (Paper I). The spectral properties and low-energy variability are the consequence of a powerful high-energy flare which was itself not observed directly. Here we report follow-up optical, near-infrared (NIR), mid-infrared (MIR), and X-ray observations of SDSSJ0952+2143. We discuss outburst scenarios in terms of stellar tidal disruption by a supermassive black hole, peculiar variability of an active galactic nucleus (AGN), and a supernova (SN) explosion, and possible links between these scenarios and mechanisms. The optical spectrum of SDSSJ0952+2143 exhibits several peculiarities: an exceptionally high ratio of [Fe vii] transitions over [O iii], a dramatic decrease by a factor of 10 of the highest-ionization coronal lines, a very unusual and variable Balmer line profile including a triple-peaked narrow component with two unresolved horns, and a large Balmer decrement. The MIR emission measured with the Spitzer IRS in the narrow 10–20 μm band is extraordinarily luminous and amounts to L10-20 μm = 3.5 × 1043 erg s−1. The IRS spectrum shows a bump around ∼11 μm and an increase toward longer wavelengths, reminiscent of silicate emission. The strong MIR excess over the NIR implies the dominance of relatively cold dust. The pre- and post-flare NIR host galaxy colors indicate a nonactive galaxy. The X-ray luminosity of Lx,0.1-10 keV = 1041 erg s−1 measured with Chandra is below that typically observed in AGNs. Similarities of SDSSJ0952+2143 with some extreme SNe suggest the explosion of a SN of Type IIn. However, an extreme accretion event in a low-luminosity AGN or inactive galaxy, especially stellar tidal disruption, remain possibilities, which could potentially produce a very similar emission-line response. If indeed a SN, SDSSJ0952+2143 is one of the most distant X-ray- and MIR-detected SNe known so far, the most MIR luminous, and one of the most X-ray luminous. It is also by far the most luminous (>1040 erg s−1) in high-ionization coronal lines, exceeding previous SNe by at least a factor of 100.
Genetic Influence on Human Psychological Traits

There is now a large body of evidence that supports the conclusion that individual differences in most, if not all, reliably measured psychological traits, normal and abnormal, are substantively influenced by genetic factors. This fact has important implications for research and theory building in psychology, as evidence of genetic influence unleashes a cascade of questions regarding the sources of variance in such traits. A brief list of those questions is provided, and representative findings regarding genetic and environmental influences are presented for the domains of personality, intelligence, psychological interests, psychiatric illnesses, and social attitudes. These findings are consistent with those reported for the traits of other species and for many human physical traits, suggesting that they may represent a general biological phenomenon.
Compressive color imaging with group-sparsity on analysis prior

Compressed sensing (CS) of color images can be formulated as a group-sparsity promoting inverse problem. In the past, group-sparsity constraint was imposed on the CS synthesis prior formulation with an orthogonal transform to solve the inverse problem. The objective of this work is to empirically show that better results can be obtained if a group-sparsity constraint is imposed on the CS analysis prior formulation with a redundant transform. This problem requires solving a group-sparsity promoting inverse problem which has not been addressed earlier. Therefore we derive a new algorithm for solving it based on the Majorization-Minimization approach. Experimental results corroborate that analysis prior with a redundant transform gives far superior (about 1.5dB) improvement compared to synthesis prior with orthogonal transform.
Engagement in Group Psychotherapy Among Marginalized Individuals With Hepatitis C

ABSTRACT This article examines an innovative psychoeducational group model at a community-based hepatitis C treatment program in Toronto, Canada. Group support is increasingly used as part of community-based, interdisciplinary approaches to addressing the complex psychosocial needs and barriers to care of individuals living with and/or undergoing treatment for hepatitis C. This article articulates the theoretical framework and details of one such group model. It also examines group engagement and outcomes using data collected over three group cycles. Psychotherapeutic engagement was higher than might be anticipated for a highly marginalized population. Specifically, group cohesion measures were equivalent or higher compared to norms for other support/psychotherapy groups. This study suggests that individuals with complex psychosocial issues have the ability to engage meaningfully in group therapy.