A Prototype of Lecturer Course Allocation System

This project is an implementation of a lecturer course allocation system (LECAS) which enables every lecturer can register courses by online as well as can view course schedule. The goal of is prototype is to provide the course schedules that would allow lectures to register courses that they plan to teach for the coming semester in the fast and possible ways. The objective of LECAS is to provide lecturers to get a convenient and efficient way during registering the courses. There are four users that can access the system such as; admin, lecturers, coordinator, and head department, each of them have different privileges in which they can access through internet and a web browser anytime and anywhere. Furthermore, this prototype has been developed by using java Servlet page (JSP) with MySQL for database. This prototype was developed based on the proposed requirement of system and was evaluated by using perceived usefulness and ease of use where the respondents are from University Utara Malaysia (UUM) lecturers. The feedbacks from 30 respondents about the system prototype are quite good which are showed with 5.46 grand mean for perceived usefulness factor and 5.37 grand mean for perceived ease of use factor with the scale of 7. Therefore, it can be concluded that the prototype is useful and easy to use. This prototype is expected to facilitate the other university to develop and enhance the system for lecturer registration time

Modeling of Meteorological Parameters for United Arab Emirates

There has been an increasing world interest in clean renewable energies (mainly solar radiation and wind energies) due to the minimal environmental problems resulting from their uses. The continuous depletion of traditional and conventional energy resources and the growing world concern about the environment have led to an extensive research and development efforts in order to improve the energy conversion efficiencies and economics of utilization solar energy devices. However, it is important to identify the potential of available energy resources on the site where renewable energy is to be utilized. Meteorological information is critical to the assessment of the energy resources available and to the performance of many different types of renewable energy systems. Potential of the renewable energy available is strongly influenced by climatic factors such as air temperature, relative humidity, sunshine duration and natural energy supply. Solar radiation is strongly weather dependent. In the United Arab Emirates weather conditions are monitored by meteorological stations across the country and weather data are collected by various meteorological agencies

Weed vegetation ecology of arable land in Salalah, Southern Oman

AbstractThis paper applies multivariate statistical methods to a data set of weed relevés from arable fields in two different habitat types of coastal and mountainous escarpments in Southern Oman. The objectives were to test the effect of environmental gradients, crop plants and time on weed species composition, to rank the importance of these particular factors, and to describe the patterns of species composition and diversity associated with these factors. Through the application of TWINSPAN, DCA and CCA programs on data relating to 102 species recorded in 28 plots and farms distributed in the study area, six plant communities were identified: I- Dichanthium micranthum, II- Cynodon dactylon–D. micranthum, III- Convolvulus arvensis, IV- C. dactylon–Sonchus oleraceus, V- Amaranthus viridis and VI- Suaeda aegyptiaca–Achyranthes aspera. The ordination process (CCA) provided a sequence of plant communities and species diversity that correlated with some anthropogenic factors, physiographic variables and crop types. Therefore, length of time since farm construction, disturbance levels and altitude are the most important factors related to the occurrence of the species. The perennial species correlated with the more degraded mountain areas of new farm stands, whereas most of the annuals correlated with old lowland and less disturbed farms

Population structure of woody plants in the arid cloud forests of Dhofar, southern Oman

This study evaluates the size frequency distribution of 11 trees and shrubs in the cloud forest in Wadi Garziz, southern Oman, in order to assess their current situation, which is affected by cutting, overgrazing and other constraints. A size class distribution and a vegetation structure analysis were applied in order to analyze the dynamics of this forest using census data from 51 plots selected across 5 transects covering the hill-slope andwadi-bed habitats. Some of the trees inhabiting the hill-slopes (e.g. Acacia senegal and Commiphora spp.) were found to exhibit an inverse J-shaped distribution with constant regeneration, whilst in the wadi bed these same trees exhibited a J-shaped distribution (i.e. of declining populations). On the other hand, Acacia etbaica inhabiting the hill- slopes exhibited a tendency towards a J-shaped distribution and an inverse J-shaped distribution in the wadi-bed. All the populations (i.e. inhabiting the hill-slopes and the beds) of Anogeissus dhofarica had a J-shaped distribution whereas all the populations of Blepharispermum hirtum had a more or less inverse J-shaped distribution. The Ziziphus spina-christi and Acacia tortilis populations, meanwhile, exhibited the bi-modal shape of size distribution. The shrubs inhabiting the hill-slopes (e.g. Coroton confertus and Ormocarpum dhofarense) exhibited a tendency towards a J-shaped distribution; such distribution characterizes a declining population with a limited regenerational capacity. Overall, most of the examined populations, except those of Acacia etbaica in wadi-bed and Blepharispermum hirtum, seemed to be under stress from both environmental and human factors, particularly in the wadi bed. This type of study can provide a basis for the development of a management plan to support the conservation and sustainable use of forest vegetation in an arid region

Interfacial Tension Behavior of Ionic Liquid as Surfactant

Fear of depletion of one of the world’s most demanding source of energy, crude oil, has made the petroleum industry more concern on sustaining the net volume of production. A crucial phase in petroleum production is applying recovery method to the reservoir as to increase the production of hydrocarbon. A lot of factors influencing the depletion of producing reservoir, primarily because of the declination of reservoir pressure. There are three steps in the recovery of oil. The process starts from primary oil recovery, followed by secondary oil production and tertiary oil recovery will be the last attempt to take place. Tertiary oil recovery or known as enhanced oil recovery (EOR) will be emphasized by all oil companies as this techniques offer prospects for the producing of 30 to 60 percent of the reservoir's original oil in place. In view of this, surfactant-based chemical systems have been reported by innumerous academic studies and technological operations throughout the years as potential candidates for EOR activities. These chemical compounds are able to reduce interfacial tensions (IFT) as well as to form and stabilize (o/w) or (w/o) emulsions thus allowing the residual oil to flow. However, various parameters such as temperature, salinity and concentration of surfactant should be taken into account as they affect the performance of surfactants

Design of a near-optimal fluidic operational amplifier

The basic operational amplifier was tested for static gain characteristics and frequency response. The results are of qualitative usefulness only due to fabrication problems with the input and feedback resistances