A number of subjective and objective methods have been proposed, and are in use, to determine the roundness of sedimentary rock particles. Roundness, which is one of three properties describing the shape of a particle, is a measure of the extent to which the corners and edges of a particle have been worn away. The objective roundness measures are mainly based on the Fourier transform. In this p...

In the present research, behavior of SPSPs with two rectangular openings and effect of strengthening different subpanels with various stiffener arrangements is investigated. In the next step, to investigate the effect of changing opening width on the trend of degradation shear stiffness and strength of the panel, the opening width is changed. In the third step, to study the effect of changing o...

PURPOSE Generation of airborne particulate matter during the handling and opening of various syringe and needle packages in a laminar-airflow workbench (LAFW) and in a biological safety cabinet (BSC) was measured to compare the effects on air cleanliness conditions (International Organization for Standardization [ISO] class 5 within the LAFW or BSC and ISO class 7 in buffer areas). METHODS Tw...

Higher education is moving from the traditional model of learning to a completely new socially mediated model. This article reports on the pedagogical value of Web 2.0 tools at Unisa. A quantitative approach was used to conduct this study with a questionnaire as a data collection instrument. The sample size is 301 lecturers drawn by stratified sampling with proportional allocation drawn across ...

Attacks on web applications are growing rapidly with the opening of new technologies, HTML tags and JavaScript functions. Cross-Site Scripting (XSS) vulnerabilities are being exploited by the attackers to steal web browser's resources (cookies, credentials etc. ) by injecting the malicious JavaScript code on the victim's web applications. The existing techniques like filtering of tags...

The floor beams of steel buildings, cold-formed steel floor joists in particular, often require large web openings, which may affect their shear capacities. A cost effective way to mitigate the detrimental effects of such openings is to weld/fasten reinforcements. A difficulty associated with an experimental investigation to establish suitable reinforcement schemes for openings in shear zone is...

From the importance of the conference and its constructive role in the studies discussion, there must be a strong organization that allows the exploitation of the discussions in opening new horizons. The vast amount of information scattered across the web, make it difficult to find experts, who can play a prominent role in organizing conferences. In this paper we proposed a new approach of extr...

The web is changing the way in which data warehouses are designed and exploited. Nowadays, for many data analysis tasks, data contained in a conventional data warehouse may not suffice, and external data sources, like the web, can provide useful multidimensional information. Also, large repositories of semantically annotated data are becoming available on the web, opening new opportunities for ...

Publishing RDF/OWL ontologies on the Semantic Web typically starts by placing the document in a web accessible location and ends with redirects of ontological components (classes, properties, individuals) to that the document. Unfortunately, this is seldom sufficient for expressive OWL ontologies in which reasoning is essential to determine the full extent of the entity in question. Moreover, t...

Opening up large amounts of loosely structured information for easy access and use is a complex problem. This paper describes two systems that address different aspects of the problem, but which use common technology and similar underlying principles. Open Book is a web-based newsletter, which automatically links stories with each other, and with database information. Sentinel is an email archi...