Archives-December 2013

Although it is loudly pronounced that the world has become global village but there can be seen a huge gulf among the poor and rich countries particularly in education, The tertiary average enrolment, percentage of GDP for education, literacy rate of youth, pupil teacher ratio and number of universities were selected as criterion to analyse the ratio among these factors which painted a gloomy picture. The data has been collected by various official web sites of the relevant countries and from the World Bank Reports, UNESCO Institute of Statistics. The findings show that there is a big gap in all of the indicators. Particularly tertiary regional average enrolment, GDP spent on education ,literacy rate among youth, research publication per year, number of PhDs produced yearly, teachers students ratio and number of universities public and private both are included. It is recommended that the technology and skills should be transferred to these comparatively less developed countries along with financial assistance. The regional conflicts and tension and the factors that cause hindrance in development of education must be removed by joint efforts of both of these countries. They have already contributed reasonably in the development process but it needs to be precise and education oriented.

A quality teacher can control and make a realization of all the skills, knowledge and expertise in himself as a practical instrument for enhancing the effectiveness of teaching in the workshop. This research aims to identify the skills of teachers in school. Teachers need to show that they have skills in doing practical work, workshop management, teaching and conducting skills of the teaching aids. This means that teachers need to have high skills in the teaching practice. The problems faced by the teacher to teach life skills in school subjects to be dealt with, especially involving practical work in workshops. Study instrument used is Inquisition of which has 40 items. Sample studies that involved in this study consisted of 30 teachers of Muar Vocational High School. The data that is derived processed by using SPSS (Statistical package for Social Sciences) version 11.5 for Windows. The results of the analysis is stated in the form of statistics and the frequency, percent minimum value and show teachers Muar Vocational High School have the skills to do the works in the high skills, management skills workshop, teaching and also control teaching aids. This means that teachers need to have high skills in the teaching practice. From the data obtained as a whole found the teachers of Muar Vocational High School have high skills in practical teaching of Living Skills subject.

Comparative study of stress intensity factor (SIF) for modes I, II and III were investigated for some engineering materials. The materials are alumina, iron, mild steel, low carbon steel, stainless steel, concrete, silica glass and PVC. Special crack-tip element method was implemented to evaluate the stress intensity factor (SIF) for centre, single-edge and double-edge crack for various values of shear modulus and symmetric crack-tip element size. Different SIF for various modes were compared for these materials and the results from the plots show that low carbon steel for mode III and alumina for mode II have high resistance to crack-growth at 12.43 and 12.2 SIF, respectively between the bounds of shear modulus 1.39 and 2.23. Also alumina for mode I exhibited crack growth at 1.42 SIF and 1.15 bounds of shear modulus. Mode I for mild steel, iron and stainless steel exhibited crack-growth at 0.691 SIF and 1.08 bounds of shear modulus. Mode I is anomalous to crack-tip element size while modes II and III show exponential decay but with crack growth in concrete and abscissa to the coordinate of PVC.

In the present study antioxidant potential of the moss Barbula javanica Doz. et Molk was evaluated. The total phenolic content (TPC) was found to be 30mg±0.96 GAE/gdw. The radical scavenging activity as IC50 against DPPH (2, 2-diphenyl-1-picrylhydrazyl), NOSA (Nitric oxide scavenging assay) and DDA (deoxyribose degradation assay) was evaluated to be 100±1.12, 80±0.90 and 35±0.50 ?g/ml, respectively. The reducing activity was assayed using FRAP (Ferric Reduction Antioxidant Potential) was found to be 1259±1.56 ?M/l. The results show the potential of B. javanica as novel antioxidant, which has been reported for the first time.

The present study investigated the correlation between willingness to communicate (WTC) in Persian and WTC in English, Perceived Communication Competence in Persian and Perceived Communication Competence in English to see whether students with high willingness to Communicate (WTC) and Perceived Communication Competence in Persian have high willingness to Communicate (WTC) and Perceived Communication Competence in English, too, or not. Correlation analysis in this study indicated that when perceived communication competence in Persian increases, perceived communication competence in English increases, too, and vice versa. In addition, by the increase in willingness to communicate in Persian the willingness to communicate in English will increase, too, and there is a direct relationship between them.

This study was carried out on the acute toxicity and anti-diabetic effect of the extracts of Phyllanthus amarus on blood glucose concentration (BGC) of normal and alloxan-induced diabetic rats. The study was done in the extracts alone and in combination of the extracts with glibenclamide drug. The acute toxicity test of the plant extracts gave a lethal dose of 3400mg/kg in mice. The anti-diabetic effect of the plant extracts was dose-dependent. Ethanolic extract alone (300mg/kg and 600mg/kg) caused a reduction in BGC of 18% and 23-5% (p<0.05) respectively in non-diabetic rats. Aqueous extract (300mg/kg) gave 23.6% and (600mg/kg) 25.8% (p<0.02). Glibenclamide alone gave 37.5% reduction (p<0.01). The simultaneous administration of the plant extracts 300mg/kg with 5mg/kg glibenclamide gave 34.4% reduction (ethanolic) and 36.5% (aqueous), 600mg/kg extracts caused reduction of 37.6% and 38.4% ethanolic and aqueous respectively on non-diabetic rats (p< 0.01).The percentage reductions in BGC in alloxan induced diabetic rats were 15.8% and 27.7% (p<0.01) for 300mg/kg ethanolic and aqueous extracts alone respectively. The extracts alone 600mg/kg gave 26.7% (p<0.05) ethanolic and 29.9% (p<0.01) aqueous. The extracts 300mg/kg in combination with 5mg/kg glibenclamide gave a percentage reduction of 35.5% (p<0.01) ethanolic, 37.4% (p<0.001) aqueous while 600mg/kg gave 39.2% and 58.1% reduction for ethanolic and aqueous extracts respectively (p<0.001). Glibenclamide administered alone on diabetic rats gave 43.8% reduction (p< 0.01). However, the higher percentage reduction were obtained with the dose of 600mg/kg, also aqueous extract in combination with 5mg/kg glibenclamide gave higher percentage reduction in BGC in alloxan induced diabetic rat.

The 1,2,3-Benzotriazol were evaluated in the present work as corrosion inhibitors for protection of the carbon steel in chloride solutions. The corrosion protection performance was investigated by means of weight loss and DC polarization and electrochemical impedance spectroscopy (EIS). Scanning electron microscope was used to study the surface topography during corrosion tests. The results show that all inhibitors under study confer corrosion protection to the carbon steel forming a thin organic layer on the substrate surface. The following quantum chemical indices such as the charge density distribution, highest occupied molecular orbital (HOMO), the lowest unoccupied molecular orbital (LUMO), energy gap, ?N and dipole moment (u) were considered. The inhibition efficiencies obtained from the employed methods are nearly closed. From the obtained data it was found that, the inhibition efficiency increases with increasing the inhibitor concentration until the optimum one.

The present study aimed at studying the effectiveness of resiliency training on social compatibility and marital satisfaction of rehabilitating addicts. The population of the study included 120 rehabilitating marital addicts who have come to addiction- leaving center of Astaneh city in months of Mordad, shahrivar and mehr in 1391. Among 85 addicts who have filled the questionnaire form, forty nine of them had low social compatibility and marital satisfaction scores. Among these addicts 30 people have been selected randomly and placed in experimental and control group in a simple random state (fifteen in and group). Resiliency has been trained to experimental group during ten seventy-Five- minute sessions and both groups refilled out the questionnaire. By using covariance test the hypothesis of the study have been tested and the results of study showed that resiliency training influences on social compatibility and marital satisfaction of rehabilitating addicts. The present study reflects the fact that resiliency training can provide useful and new strategies in increasing the social and familial compatibility of rehabilitating addicts.

Rapid growth of mobile communication over the past years has tremendously increased the number of users which reduces the capacity of the system due to the increase in the number of interferers. Space Division Multiple Access (SDMA) is one of the promising technologies for future mobile communication. Smart antennas, usually employed at the base station radiate narrow beams to serve different users by using spatial processing. As long as the users are well separated spatially, the same frequency can be reused even when the users are in the same cell. The paper focuses the use of adaptive antenna arrays in CDMA networks to suppress cochannel interference. The training sequence based adaptive algorithms like the LMS, SMI and RLS algorithms are discussed in detail and the effect of number of antenna elements, inter element spacing, effect of number of interferers and the variation in SNR on the training sequence based adaptive algorithms is studied. The beam formation, null steering, maximum side lobe levels and convergence of these algorithms is studied in detail and compared. Keywords- Smart Antenna, LMS Algorithm, SMI Algorithm, RLS Algorithm, Beam Formation, Null Steering.

An Autogenous Milling defined as used in this study, the term Autogenous milling means a process in which the size of the constituent pieces of a supply of rock is reduced in a tumbling mill purely by the interaction of the pieces, or by the interaction of the pieces with the mill shell, no other grinding medium being employed. The definition thus covers both 'run-of-mine' and 'pebble' milling, the only difference from the mathematical modeling viewpoint being that the feed to the first has a continuous, and the second a non-continuous, size distribution. This paper describes the detail design of a typical Autogenous mill.