Enhancing User Trust in Cloud Computing Applications

Despite the surge in activity and interest in cloud computing, there are significant and persistent concerns about cloud computing, particularly with regard to trusting the cloud platform in terms of confidentiality, integrity and availability of user data stored through these applications. These factors are significant in determining trust in cloud computing and thus provide the foundation for this paper. The significant role that trust plays in use of cloud computing was considered in relation to various trust related models, theories and frameworks. The available trust models, frameworks and cloud computing adoption strategies focus on cost reduction and the various benefits that are associated with migrating to the cloud. This paper focused on the lack of user trust in cloud computing applications, and strategies of enhancing user trust with reference to the Proposed Trust Model by Mayer, Davis, and Schoorman, (1995) and the Confidentiality, Integrity, Availability (CIA) Triad. A questionnaire was used as the means of gathering data on trust related perceptions of the use of cloud computing. An initial cloud computing adoption model was proposed based on key portions of cloud computing literature that was explored, combined and expected to enhance trust in cloud computing. This initial model was an important foundation for the establishment of the Critical Success Factors (CSFs) and thereafter the framework to enhance user trust in cloud computing applications

Definición de cielos CIE estándar y aplicación de fotografías de alto rango dinámico para caracterizar la distribución espacial de luz natural en chile

The effectiveness and accuracy of a daylighting study relies on knowing the climate and light conditions available at a given place, to then evaluate the illuminance obtained during the project development process. This paper presents the methodologies of a research process, whose objective is providing realistic data to establish the foundations for future lighting studies in Chile. It starts with the revision of the metrics used to quantify daylight; later, the methodology used to collate the monthly frequencies on four types of standard CIE skies, starting from climate files, is presented. Finally, both the methodology and the results obtained are presented to measure and characterize the real skies, as well as the High Dynamic Range photographs (HDR) and, as complement of this information, the illuminances measurements of the sky dome to define the types of skies of six Chilean cities. From the study applied, it is possible to conclude that knowing the standard CIE skies of a place allows us to adjust and focus the daylighting study for predetermined and predominant skies. It is just as important to mention that the measuring techniques for the skies must be adjusted and calibrated for each studied location.La efectividad y precisión de un estudio de iluminación natural depende de conocer las condiciones de clima y la luz disponibles en un lugar, para así evaluar la iluminancia obtenida durante el proceso proyectual. Se presentan las metodologías aplicadas de una investigación realizada cuyo objetivo fue conocer y entregar datos realistas de la distribución espacial de los cielos, para así construir las bases para futuros estudios de iluminación en Chile. Se inicia con una revisión de las métricas para cuantificar la luz natural; posteriormente se presenta la metodología utilizada para levantar la información de frecuencias mes a mes en cuatro tipos de cielos CIE estándar a partir de archivos meteorológicos. Finalmente, se expone el método de fotografías de alto rango dinámico (High Dynamic Range-HDR) aplicado para conocer la distribución espacial de los cielos de seis ciudades de Chile. Se concluye que conocer los cielos CIE estándar posibilita focalizar los estudios de iluminación natural para cielos predeterminados, realizando un diseño y análisis para los cielos más frecuentes. Así mismo, el método aplicado para caracterizar la distribución espacial de los cielos debe ser calibrado para cada localidad de estudio

Deficiency of Porphobilinogen Synthase Associated with Acute Crisis. Diagnosis of the First Two Cases in Chile by Laboratory Methods

Peer Reviewe

Una nueva especie del grupo de Liolaemus nigroviridis de los Andes de Chile central (Iguania: Liolaemidae)

Species of the Liolaemus nigroviridis group are robust lizards with a medium body size, whose males usually exhibit striking coloration patterns in green, yellow, orange or blue colors, accompanied by black stripes. All species of this group are endemic to central Chile, distributed along the Andean and Coastal mountain ranges. Several DNA phylogenetic studies have pointed out that the nominal species of this group, L. nigroviridis, is indeed a species complex, formed by L. nigroviridis and other lineages that could constitute candidate species. Here we review the taxonomic status of one of these lineages, whose previous record was based mainly on juvenile specimens. However, the examination of adult specimens allows us to conclude that this lineage should be described as a new species, in which males have a very remarkable dorsal color pattern. We also propose the revalidation of the taxon formerly known as L. nigroviridis campanae to full species status.Las especies del grupo de Liolaemus nigroviridis son lagartijas robustas y de tamaño mediano, cuyos machos usualmente presentan llamativos patrones de coloración, con colores verdes, amarillos, anaranjados o azules, acompañadas por líneas negras.Todas las especies de este grupo son endémicas de Chile central, distribuidas en las montañas de la costa y de los Andes. Varios estudios filogenéticos basados en ADN han señalado que la especie nominal de este grupo, L. nigroviridis, es en realidad uncomplejo de especies, conformado por L. nigroviridis y otros linajes que constituyen especies candidatas. Nosotros revisamos el estatus taxonómico de uno de estos linajes, cuyos registros previos estaban basados principalmente en juveniles. Sin embargo,la revisión de especímenes adultos nos permitió concluir que este linaje debería ser descrito como una especie nueva, cuyos machos presentan un diseño de coloración dorsal muy llamativo. También proponemos la revalidación como especie del taxónanteriormente conocido como L. nigroviridis campanae

Stufenübergreifende Förderung von Deutsch als Zweitsprache

Die frühkindliche Förderung der Zweitsprache Deutsch ist im bildungs- und integrationspolitischen Diskurs ein Thema von großer Bedeutung. Sprach- und erziehungswissenschaftliche Studien belegen jedoch, dass die Zweitsprache nur in einem langfristigen Entwicklungsprozess erworben wird. Dies fordert Bildungsinstitutionen, ihre Förderangebote intern und extern aufeinander abzustimmen und somit eine stufenübergreifende Sprachförderung zu verwirklichen. Der vorliegende Band verbindet sprachwissenschaftliche und migrationspädagogische Ansätze und arbeitet anhand der Untersuchung eines Praxisprojekts begünstigende und hemmende Faktoren für die Umsetzung stufenübergreifender Förderung von Deutsch als Zweitsprache heraus

Evaluación energética de soluciones de envolvente vertical aplicadas en establecimientos educacionales de la zona Austral de Chile

The objective of this research is to analyze the thermal performance of wood-frame vertical envelope solutions used in Canadian establishments and to evaluate how these technologies contribute towards reducing the energy demand of educational establishments in Chile. The first stage of the research involved reviewing the wood-frame envelope solutions used in Canada. Six solutions were selected in order to evaluate their thermal performance and the energy demand reduction produced when they are incorporated in Chilean educational establishment envelopes. To improve the accuracy of the energy demand results, the linear thermal transmittance values (Ψ) were obtained for each of the wall solution joints with the rest of the envelope's elements, using LBNL Therm. Finally, using DesignBuilder, energy simulations were developed incorporating all the values (Ψ) obtained before, in order to evaluate the demand reduction produced by the selected solutions. The results indicate that the solutions analyzed save up to 51% of the heating demand of the establishments during the coldest months. This allows promoting the use of wood as a sustainable material which aligns with the “Energy 2050” policy.El objetivo de esta investigación es analizar el desempeño térmico de soluciones de envolvente vertical de tabiquería de madera utilizadas en establecimientos Canadienses y evaluar cómo estas tecnologías contribuyen en la reducción de la demanda energética de establecimientos educacionales en Chile. La primera etapa de esta investigación estuvo relacionada con la revisión de los diferentes tipos de soluciones de tabiquería estructural utilizadas en Canadá. Seis soluciones se seleccionaron para así poder evaluar su desempeño térmico y la reducción en la demanda energética producida cuando estas se incorporan en la envolvente de establecimientos educacionales chilenos. Para mejorar la precisión de los resultados, se calcularon los valores de transmitancia térmica lineal (Ψ) para cada una de las uniones de las soluciones de muro con el resto de los elementos de la envolvente, utilizando LBNL Therm. Finalmente, utilizando DesignBuilder, se realizaron simulaciones energéticas incorporando todos los valores de transmitancia lineal (Ψ) obtenidos de manera previa para así evaluar la reducción de la demanda energética producida por las soluciones seleccionadas. Los resultados muestran que las soluciones analizadas generan ahorros de hasta un 51% de la demanda de calefacción del establecimiento en los meses más fríos del año. Esto permite promover la madera como un material sustentable que se alinea con lo mencionado en la política “Energía 2050”

A model for enhancing trust in South African automotive supply chains through information technology

The South African automotive industry is recognised as an important sector for the economy and has thus been prioritised by the South African government. The success of the automotive manufacturers depends on the efficiency and effectiveness of their supply chain. Due to the large number of suppliers involved in these supply chains, enhancing trust in the inter-organisational relationships can ensure the competitiveness of the supply chain. Additionally, insufficient trust can disrupt information sharing between supply chain partners which further impacts on supply chain operations and hence supply chain competitiveness. Thus, both insufficient trust and insufficient information sharing are viewed as contributing factors to the inefficiency and ineffectiveness of a supply chain’s operations. The use of Information Technology to facilitate inter-organisational relationships, in particular in terms of improving information sharing, is an important consideration in this research project. As in the Prisoner’s Dilemma, when supply chain members share information freely, trust levels are increased, hence supply chain effectiveness and efficiency is achieved and therefore the competitiveness of the supply chain is optimised. This study addresses the problem of enhancing trust in automotive supply chains using Information Technology. Previous studies have recognised the importance of trust and information sharing in supply chain relationships. These previous studies have also considered the effect of trust on information sharing, or the effect of information sharing on trust in a single direction. Thus, to address this research problem, a cyclical relationship between trust and information sharing is proposed. In this respect, Information Technology should be used to nurture this cyclical relationship between trust and information sharing. A model for the enhancement of trust in automotive supply chains through Information Technology is proposed to achieve the objectives of this research project. This model includes risk perception; information sharing as a means of enhancing trust; a trust area that consists of both supply chain partner trustworthiness and system trust; the resultant trusting behaviour; and the resultant improved information sharing. As this study is concerned with the use of IT to enhance trust, the inclusion of system trust as a component of the model is a significant contribution of this study which is complementary to the proposed cyclical relationship between trust and information sharing

Literatura y visualidad: el libro fotográfico durante la dictadura chilena (1973-1989)

Resumen temporalmente no disponible. La presente obra no cuenta con resumen provisto por el autor.Fil: Piderit, María Fernanda. Universidad de Buenos Aires. Facultad de Filosofía y Letras

A model for enhancing trust in South African automotive supply chains through information technology

The South African automotive industry is recognised as an important sector for the economy and has thus been prioritised by the South African government. The success of the automotive manufacturers depends on the efficiency and effectiveness of their supply chain. Due to the large number of suppliers involved in these supply chains, enhancing trust in the inter-organisational relationships can ensure the competitiveness of the supply chain. Additionally, insufficient trust can disrupt information sharing between supply chain partners which further impacts on supply chain operations and hence supply chain competitiveness. Thus, both insufficient trust and insufficient information sharing are viewed as contributing factors to the inefficiency and ineffectiveness of a supply chain’s operations. The use of Information Technology to facilitate inter-organisational relationships, in particular in terms of improving information sharing, is an important consideration in this research project. As in the Prisoner’s Dilemma, when supply chain members share information freely, trust levels are increased, hence supply chain effectiveness and efficiency is achieved and therefore the competitiveness of the supply chain is optimised. This study addresses the problem of enhancing trust in automotive supply chains using Information Technology. Previous studies have recognised the importance of trust and information sharing in supply chain relationships. These previous studies have also considered the effect of trust on information sharing, or the effect of information sharing on trust in a single direction. Thus, to address this research problem, a cyclical relationship between trust and information sharing is proposed. In this respect, Information Technology should be used to nurture this cyclical relationship between trust and information sharing. A model for the enhancement of trust in automotive supply chains through Information Technology is proposed to achieve the objectives of this research project. This model includes risk perception; information sharing as a means of enhancing trust; a trust area that consists of both supply chain partner trustworthiness and system trust; the resultant trusting behaviour; and the resultant improved information sharing. As this study is concerned with the use of IT to enhance trust, the inclusion of system trust as a component of the model is a significant contribution of this study which is complementary to the proposed cyclical relationship between trust and information sharing