1,261 research outputs found

    Ambient Intelligence

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    The Influence of Situation-Dependent Factors on Mobile Shopping Usage

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    Although situations influence the use of a technology, this field has been largely neglected in mobile shopping. Therefore, this paper aims to identify situational factors impacting on the intention to use a mobile device for actual purchase transactions, as actual purchases were found to be the least adapted shopping activity conducted via mobile devices. This study contributes to the field of mobile shopping behavior by being the first to simultaneously investigate the influence of various situational factors on the intention to shop mobile. Based on Belk’s five categories of situational factors, we perform a conjoint analysis to explore the relevance of different situational characteristics for low and high involvement products. The results indicate that particularly the product price, the internet connection, and the mobile shop layout determine mobile shopping behavior. Practical actions to strengthen the mobile channel and increase consumers’ intentions to purchase via mobile devices, can be derived from the findings

    On the Importance of National Culture for the Design of Information Systems

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    In this contribution a literature review is conducted to illustrate how national culture influences phases of the design of information systems. For this purpose, we review the literature in order to identify reliable and commonly approved findings as well as still open remaining questions. Fundamentally, our literature review is a comprehensive framework that sets typical dimensions of system design as well as main types of cultural research in relation to each other. The existing research results in the area of national culture are classified along the levels of system design and attributed to typical phases of the design of information systems. It thus becomes apparent that in the domain of culture and information system design it is often only the design subject or the design object that is addressed. Contributions that connect both levels rarely exist. In our review, only a limited number of publications could be identified that covered concrete phases of the development providing system design, implementation, as well as verification and validation. From a theoretical perspective, there is an obvious dominance of Hofstede’s cultural dimensions that well address single topics of the design, such as user interface and inter cultural problems in development teams. Other domains, however (e.g., technology and architecture), are inadequately explained. Further, a predominantly phenomenological focus becomes obvious. The observed cultural phenomena and the connected interpretations are usable in a limited way for concrete development initiatives. The contribution ends with the vision of a theory for the culturally sensitive design of socio-technical information systems that absorbs current scientific knowledge and unites it in a structured approach

    Social evaluation at a distance – facets of stereotype content about student groups in higher distance education

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    In the academic domain, belonging to a negatively stereotyped group can impair performance and peer relationships. In higher distance education, stereotypes may be particularly influential as face-to-face contact is limited and non-traditional students who are at risk of being stereotyped are overrepresented. Still, research on stereotypes in higher distance education is sparse. The current research addresses this gap by investigating the Big Two of social perception (warmth, competence) and subordinate facets (friendliness, morality, assertiveness, ability, conscientiousness) in the context of higher distance education. It tests a) how well models with warmth/competence or the facets fit the data, b) whether stereotypes in higher distance education depend on the student group, and c) how the Big Two and subordinate facets predict intergroup emotions and behavioral intentions in higher distance education. An online survey with N = 626 students (74% female) of a large distance university showed that a measurement model with four facets (i.e., friendliness, morality, ability, conscientiousness) reveals adequate model fit for 12 student groups. Perceived stereotypes were positive for female students, older students, and students with children. However, migrant as well as younger students were perceived negatively. Across groups, stereotype content facets predicted intergroup emotions and behavioral intentions of facilitation or harm. Implications for the influence of negative stereotypes in higher distance education are discussed

    Jury deliberation: An observation study.

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    In this article, the way that the jury works is considered from a group-analytic perspective. Observational fieldwork of simulated jury deliberations is presented. The data was gathered from a joint funded Home Office and Law Commission project at the Socio- Legal Studies Centre, Oxford in 1995. Inferences are drawn from the observations and the unconscious group processes are considered. The efficacy of the jury process is discussed

    The Lorentzian distance formula in noncommutative geometry

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    For almost twenty years, a search for a Lorentzian version of the well-known Connes' distance formula has been undertaken. Several authors have contributed to this search, providing important milestones, and the time has now come to put those elements together in order to get a valid and functional formula. This paper presents a historical review of the construction and the proof of a Lorentzian distance formula suitable for noncommutative geometry.Comment: 16 pages, final form, few references adde

    Improving Colorectal Cancer Screening Rates in Patients Referred to a Gastroenterology Clinic

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    Colorectal cancer (CRC) is the third most common cancer and the second leading cause of cancer-related death in the United States. Colonoscopy and fecal immunochemistry testing (FIT) are the primary recommended CRC screening modalities. The purpose of this study is to improve rates of CRC screening in Veterans and County hospital patients referred to gastroenterology fellow's clinics. A total of 717 patients between ages of 49 and 75 years were seen. Previous CRC screening was not performed in 109 patients (15.2%) because of not being offered (73.4%) or declining (26.6%) screening. Patients who received previous CRC screening compared with no previous screening were older (mean age 62.3 years vs. 60.3 years, p < .003), white (88.6% vs. 78.3%, p < .027), and more likely to be Veterans patients (90.8% vs. 77.5%, p < .001). After systematically discussing options for screening with 78 of the 109 unscreened patients, 56 of them (71.8%) underwent screening with either colonoscopy (32) or FIT (24). Patients seen by fellows in their last year of training agreed to undergo screening more often than those seen by other fellows (100% vs. 66.2%, p < .033). Systematic discussions about both colonoscopy and FIT can improve the overall rates of CRC screening

    Tracking the sea-level signature of the 8.2 ka cooling event: New constraints from the Mississippi Delta

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    The ever increasing need for accurate predictions of global environmental change under greenhouse conditions has sparked immense interest in an abrupt, century‐scale cooling around 8200 years ago, with a focal point in the North Atlantic and with hemispheric teleconnections. Despite considerable progress in the unraveling of this striking feature, including a conceivable driving mechanism (rapid drainage of proglacial Lake Agassiz/Ojibway and a resulting reduced strength of North Atlantic thermohaline circulation), several key questions remain unanswered. One salient aspect concerns the total amount of freshwater released during this catastrophic event, likely echoed by a near‐instantaneous eustatic sea‐level rise. So far, no attempts have been made to perform high‐resolution sea‐level studies that explicitly focus on this critical time interval. Here, we present new data from the Mississippi Delta suggestive of abrupt sea‐level rise associated with the 8.2 ka event. However, the amount of sea‐level rise was likely less than ∌1.2 m, corresponding to a meltwater volume of less than ∌4.3 1014 m3; values lower than estimates used by several recent studies

    A qualitative study of the experiences and expectations of women receiving in-patient postnatal care in one English maternity unit

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    Background Studies consistently highlight in-patient postnatal care as the area of maternity care women are least satisfied with. As part of a quality improvement study to promote a continuum of care from the birthing room to discharge home from hospital, we explored women’s expectations and experiences of current inpatient care. Methods For this part of the study, qualitative data from semi-structured interviews were transcribed and analysed using content analyses to identify issues and concepts. Women were recruited from two postnatal wards in one large maternity unit in the South of England, with around 6,000 births a year. Results Twenty women, who had a vaginal or caesarean birth, were interviewed on the postnatal ward. Identified themes included; the impact of the ward environment; the impact of the attitude of staff; quality and level of support for breastfeeding; unmet information needs; and women’s low expectations of hospital based postnatal care. Findings informed revision to the content and planning of in-patient postnatal care, results of which will be reported elsewhere. Conclusions Women’s responses highlighted several areas where changes could be implemented. Staff should be aware that how they inter-act with women could make a difference to care as a positive or negative experience. The lack of support and inconsistent advice on breastfeeding highlights that units need to consider how individual staff communicate information to women. Units need to address how and when information on practical aspects of infant care is provided if women and their partners are to feel confident on the woman’s transfer home from hospital

    Spontaneous symmetry breaking in the colored Hubbard model

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    The Hubbard model is reformulated in terms of different ``colored'' fermion species for the electrons or holes at different lattice sites. Antiferromagnetic ordering or d-wave superconductivity can then be described in terms of translationally invariant expectation values for colored composite scalar fields. A suitable mean field approximation for the two dimensional colored Hubbard model shows indeed phases with antiferromagnetic ordering or d-wave superconductivity at low temperature. At low enough temperature the transition to the antiferromagnetic phase is of first order. The present formulation also allows an easy extension to more complicated microscopic interactions.Comment: 19 pages, 5 figure
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