602 research outputs found

    Buying power and human rights in the supply chain: legal options for socially responsible public procurement of electronic goods

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    Several scandals involving well-known electronics brands have highlighted the exploitative and unsafe conditions under which many workers operate in the industry’s long and complex supply chains. As large-scale consumers of electronic goods, public buyers potentially hold significant leverage over the behaviour of their suppliers through their buying power. Consequently, public procurement has the potential to be a significant influence on these supply chains and ultimately the human rights of those working in them. This article critically assesses legal options for the promotion of social considerations in the supply chain, considering in particular the potential of the European Union legal regime for public procurement as a tool for improving working conditions and human rights in the electronics industry supply chain

    Do Transcription Factors Play Special Roles in Adaptive Variation?: Figure 1.

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    Towards a theory of shopping: a preliminary conceptual framework

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    One criticism (Arnould, 2000) of Miller's 1998 book, A Theory of Shopping and the jointly authored Shopping, Place and Identity (Miller et al., 1998) is that the authors fail to incorporate or even acknowledge the body of literature which exists within marketing and consumer research. Thus, as Arnould states, `the authors rediscover some of the findings of theoretical marketing literature about shopping venues, shopping and customer- store and service relationships' (Arnould, 2000, p. 106). This paper attempts to redress the balance by proposing a conceptual framework for shopping which incorporates relevant marketing and consumer research literature and which also draws on the wider literature in the social sciences to set the context for progress towards a theory of shopping

    Tell me what they are like and I will tell you where they buy. An analysis of omnichannel consumer behavior

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    In the past, consumers used to go to brick-and-mortar stores to gather information and often concluded their shopping there, with the physical store probably being one of their few sources of product information. Nowadays, with the arrival of digital devices, the number of sources of information has grown. Consumers tend to combine these with brick-and-mortar establishments both to search and buy, leading to the emergence of omnichannel behavior. In this context, there is a lack of research which considers online and mobile devices separately. The aim of the present study is to analyze how two individual traits –impulsiveness and need for touch– influence the use of each device in the omnichannel decision-making process. Results from a sample of 284 real digital (online and/or mobile) shoppers of clothes confirm that personal traits influence omnichannel consumer behavior. Results show that impulsive shoppers make greater use of mobile devices whereas individuals with high need for touch are more predisposed to use online devices in their omnichannel process. Besides, the effect of individual demographics is taken into account. Finally, we discuss the paper's contributions and outline the actions which managers can engage in so as to succeed in omnichannel retail.Ministry of Economy, Industry and Competitiveness (Research Projects ECO2012-36275 and ECO2014-53060-R

    Advanced Parental Age and the Risk of Autism Spectrum Disorder

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    This study evaluated independent effects of maternal and paternal age on risk of autism spectrum disorder. A case-cohort design was implemented using data from 10 US study sites participating in the Centers for Disease Control and Prevention's Autism and Developmental Disabilities Monitoring Network. The 1994 birth cohort included 253,347 study-site births with complete parental age information. Cases included 1,251 children aged 8 years with complete parental age information from the same birth cohort and identified as having an autism spectrum disorder based on Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision criteria. After adjustment for the other parent's age, birth order, maternal education, and other covariates, both maternal and paternal age were independently associated with autism (adjusted odds ratio for maternal age ≥35 vs. 25–29 years = 1.3, 95% confidence interval: 1.1, 1.6; adjusted odds ratio for paternal age ≥40 years vs. 25–29 years = 1.4, 95% confidence interval: 1.1, 1.8). Firstborn offspring of 2 older parents were 3 times more likely to develop autism than were third- or later-born offspring of mothers aged 20–34 years and fathers aged <40 years (odds ratio = 3.1, 95% confidence interval: 2.0, 4.7). The increase in autism risk with both maternal and paternal age has potential implications for public health planning and investigations of autism etiology

    Cancellous bone and theropod dinosaur locomotion. Part I—an examination of cancellous bone architecture in the hindlimb bones of theropods

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    This paper is the first of a three-part series that investigates the architecture of cancellous (‘spongy’) bone in the main hindlimb bones of theropod dinosaurs, and uses cancellous bone architectural patterns to infer locomotor biomechanics in extinct non-avian species. Cancellous bone is widely known to be highly sensitive to its mechanical environment, and has previously been used to infer locomotor biomechanics in extinct tetrapod vertebrates, especially primates. Despite great promise, cancellous bone architecture has remained little utilized for investigating locomotion in many other extinct vertebrate groups, such as dinosaurs. Documentation and quantification of architectural patterns across a whole bone, and across multiple bones, can provide much information on cancellous bone architectural patterns and variation across species. Additionally, this also lends itself to analysis of the musculoskeletal biomechanical factors involved in a direct, mechanistic fashion. On this premise, computed tomographic and image analysis techniques were used to describe and analyse the three-dimensional architecture of cancellous bone in the main hindlimb bones of theropod dinosaurs for the first time. A comprehensive survey across many extant and extinct species is produced, identifying several patterns of similarity and contrast between groups. For instance, more stemward non-avian theropods (e.g. ceratosaurs and tyrannosaurids) exhibit cancellous bone architectures more comparable to that present in humans, whereas species more closely related to birds (e.g. paravians) exhibit architectural patterns bearing greater similarity to those of extant birds. Many of the observed patterns may be linked to particular aspects of locomotor biomechanics, such as the degree of hip or knee flexion during stance and gait. A further important observation is the abundance of markedly oblique trabeculae in the diaphyses of the femur and tibia of birds, which in large species produces spiralling patterns along the endosteal surface. Not only do these observations provide new insight into theropod anatomy and behaviour, they also provide the foundation for mechanistic testing of locomotor hypotheses via musculoskeletal biomechanical modelling

    NXF2 is involved in cytoplasmic mRNA dynamics through interactions with motor proteins

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    Tap/NXF1, the founding member of the evolutionarily conserved NXF (Nuclear RNA export Factor) family of proteins, is required for the nuclear export of bulk poly(A)+ RNAs. In mice, three additional NXF family genes (NXF2, NXF3, NXF7) have been identified and characterized to date. Cumulative data suggest that NXF family members play roles, not only in nuclear mRNA export, but also in various aspects of post-transcriptional mRNA metabolism. In order to better understand the functional role of NXF2, we searched for its binding partners by yeast two-hybrid screening and identified several cytoplasmic motor proteins, including KIF17. The interaction of NXF2 with KIF17, which was confirmed by GST pull-down and co-immunoprecipitation assays, is mediated by the N-terminal domain of NXF2, which is required for the punctate localization patterns in dendrites of primary neurons. We also found that the NXF2-containing dendritic granules, which were co-localized with KIF17, mRNA and Staufen1, a known component of neuronal mRNA granules, moved bidirectionally along dendrites in a microtubule-dependent manner. These results suggest that NXF2, a nucleo-cytoplasmic mRNA transporter, plays additional roles in the cytoplasmic localization of mRNAs through interactions with cytoplasmic motor proteins

    Molecular processes underlying the floral transition in the soybean shoot apical meristem

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    The transition to flowering is characterized by a shift of the shoot apical meristem (SAM) from leaf production to the initiation of a floral meristem. The flowering process is of vital importance for agriculture, but the associated events or regulatory pathways in the SAM are not well understood, especially at a system level. To address this issue, we have used a GeneChip® containing 37 744 probe sets to generate a temporal profile of gene expression during the floral initiation process in the SAM of the crop legume, soybean (Glycine max). A total of 331 transcripts displayed significant changes in their expression profiles. The in silico and RT-PCR analysis on differentially regulated transcripts implies the intriguing involvement of sugar, auxin or abscisic acid (ABA) in events prior to the induction of floral homeotic transcripts. The novel involvement of ABA in the floral transition is further implicated by immunoassay, suggesting an increase in ABA levels in the SAM during this developmental transition. Furthermore, in situ localization, together with in silico data demonstrating a marked enhancement of abiotic stress-related transcripts, such as trehalose metabolism genes in SAMs, points to an overlap of abiotic stress and floral signalling pathways

    Genetic and environmental contributions to loneliness in adults: the Netherlands Twin Register study

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    Heritability estimates based on two small studies in children indicate that the genetic contribution to individual differences in loneliness is approximately 50%. Heritability estimates of complex traits such as loneliness may change across the lifespan, however, as the frequency, duration, and range of exposure to environmental influences accrues, or as the expression of genetic factors changes. We examined data on loneliness from 8,387 young adult and adult Dutch twins who had participated in longitudinal survey studies. A measure of loneliness was developed based on factor analyses of items of the YASR (Achenbach, (1990) The Young Adult Self Report, University of Vermont, Department of Psychiatry, Burlington, VT). Variation in loneliness was analyzed with genetic structural equation models. The estimate of genetic contributions to variation in loneliness in adults was 48%, which is similar to the heritability estimates found previously in children. There was no evidence for sex or age differences in genetic architecture. Sex differences in prevalence were significant, but we did not see an association with age or birth cohort. All resemblance between twin relatives was explained by shared genes, without any suggestion of a contribution of shared environmental factors. ©2005 Springer Science+Business Media, Inc
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