background: fracture load of implant-supported restorations is an important factor in clinical success. this study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw retained implant-supported zirconia-based crowns. methods: thirty similar cement-screw retained implant-supported zirconia-based maxillary central incisor crowns were evalu...

Margaret Goldwater advocated for birth control [3] and reproductive rights [4] in the United States during the twentieth century. Goldwater was a socialite and philanthropist and was married to Barry Goldwater, US Senator from Arizona. She spent much of her life working to further the women's reproductive rights movement, which sought to expand women's legal, social, and physical access to repr...

The role of Internet has been rapidly becoming inevitable to corporate and society. Across the world, governments and corporate have been working towards the better utilization of the internet. Initially, the Internet was perceived as communication media and now, slowly, metamorphosing into a powerful business media. The Internet provides a direct reach to end users, thereby, the corporate wish...

Constraints are an important aspect of role-based models. Several types of constraints, such as separation of duty constraints, cardinality constraints and temporal constraints have been identified in the literature. Although the specification of constraints has received significant research interest, there has been little work on the development of an efficient constraint enforcement model. In...

ion des données : on peut définir des actions plus abstraites que lecture/écriture. Le modèle RBAC modélise le système informatique considéré en séparant les entités actives des entités passives. Les entités actives correspondent aux utilisateurs du système et les entités passives correspondent aux objets du système. Au contraire du modèle de LaPadula, qui associe des niveaux de sécurité aux di...

In recent years, several researches conducted in the field of consumer behaviour because of increased importance given to brand management and performance. Technological factors such as the availability of personal computers and internet access, download time and representativeness of pictures and colors of products are the reason for increasing the potential customer .Here Impulse buying plays...

High assurance computer systems are computer systems where convincing evidence is required that the system satis es a collection of critical properties. To operate correctly, these systems must satisfy properties such as safety and security. Examples of high assurance systems include ight control systems, medical systems, and control systems for nuclear plants. In addition, increased reliance o...

background the presence of arterio-venous (a-v) fistula recirculation among hemodialysis (hd) patients markedly decrease adequacy of dialysis. objectives the present article summarize some of observations about clinical significance, causes, the most common techniques for measurement, and main source of pitfall in calculation of access recirculation. materials and methods a variety of literatur...

Just as organisations have goals describing their primary business objectives, they also have goals with respect to controlling how these objectives are met. These are the control goals of an organisation which are enforced through a system of internal control. Such a system enables them to adhere to external laws and internal regulations, prevent and detect fraud and continuously enhance the o...

E-commerce researchers and managers have known for some time that Long-Tail effects on pricing and product purchase are an important way in which internet retail differs from traditional “brick & mortar” businesses. These Long Tail effects are often directly attributed to lower search costs. Using a transaction-level model we provide important evidence that the principal impact of a reduction i...