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This paper deals with the problem of estimating the population variance when some information on two auxiliary variables is available. It is shown that the proposed estimator is more efficient than the usual mean estimator and other existing estimators. The study is also extended to two-phase sampling. Theoretical results are supported by an empirical study.

An evaluation of 238U, 235U, 137Cs and 133Xe in soils from two campuses in university of Douala-Cameroon using gamma spectroscopy based Broad Energy Germanium Detector (BEGe6530) has been performed. The mean activities in soils from Campuse 1 were 40.16±8.98 Bq/kg for 238U, 3.39±0.33 Bq/kg for 235U, 0.46±0.33 Bq/kg for 137Cs and 0.14±0.16 Bq/kg for 133Xe. In Campus 2, the mean activities in soils were 31.45±12.24 Bq/kg, 3.02±1.00 Bq/kg, 0.30±0.26 Bq/kg and 0.35±0.24 Bq/kg for 238U, 235U, 137Cs and 133Xe respectively. Using the In situ survey meter, the mean values of the absorbed dose rate measured was 71.43 nGy/hr for Campus 1 and 62.72 nGy/hr for Campus 2. The evaluated average outdoor effective dose for Campus 1 and 2 were 87.60 µSv/yr and 76.93 µSv/yr respectively. The overall results obtained in this work were generally low compared to that of UNSCEAR.

This essay has attempted to investigate the basic concerns and requirements of blind and visually impaired translators. Following such necessities, the major instruments and technologies designed to fulfil them have also been examined. The researcher has interviewed with two individuals poor in vision, one being a translator and the other having studied translation in the university. Each individual was asked six questions. Their responses to the researcher’s questions were examined to draw conclusions in order to answer the research questions. The most important concern of these translators is the Persian dimension of translation process. Their major requirements include such instruments as accessible computers, high-quality scanners, specific software capable of verbalizing such visual elements as tables, diagrams, figures, etc., accessible dictionaries and databases, and such issues as appropriate financial and occupational status.

Concordancing in the classroom is fairly a new approach that has emerged with the use of corpora in language learning. In a concordance, language is presented in an authentic context; learners are able to examine a key word in the context of a string of sentences which can exemplify the use of that particular word. This study examined whether the use of an online concordance program together with an online dictionary by 30 intermediate EFL learners aided in the transfer of word knowledge to an academic writing task. The learners were selected from Islamic Azad University, Tonekabon branch, and randomly assigned into 2 groups of control group and experimental group. The subjects in the experimental group were asked to use the concordance and online dictionary in their writing, but the control group used only the online dictionary. The results indicated that there was statistically significant transfer of vocabulary knowledge to the writing task.

With the advancement in technology and increase in number of vehicles it is the need of the day to recognize registered and unregistered vehicles. Extraction of number plate plays a key role in the recognition of vehicles. For this purpose, in this paper we propose a system to automatically extract digits and alphabets from the number plate of vehicle and search it in the database for its registration. The proposed approach involves four different processes that include Image smoothing, Edge detection, Image segmentation and data extraction. The result shows that the proposed approach can easily detect and extract data from the number plates. Some of the number plates and its extracted data are shown in this paper. The results can further be implemented on automatic extraction of data from shields, sign etc.

We are very happy to announce that from 4th December 2015, Dr. Mohamed Abdel Fatah Ashabrawy Moustafa has joined the team of Elixir Editorial Advisory Board. He/She will carry a special responsibility for dealing with manuscripts based on Computer Science. Dr. Mohamed Abdel Fatah Ashabrawy Moustafa working as Assistant Professor Computer Science, Prince Sattam bin AbdulAziz University ALkharj, KSA. The appointment of Dr. Mohamed Abdel Fatah Ashabrawy Moustafa as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal. Please send any expressions of interest to elixirpublishers@gmail.com.

We are very happy to announce that from 1st April 2016, Dr. Vishnu Narayan Mishra has joined the team of Elixir Editorial Advisory Board. He/She will carry a special responsibility for dealing with manuscripts based on Mathematics. Dr. Vishnu Narayan Mishra working as Assistant Professor of Mathematics (Applied Mathematics and Humanities Department), Sardar Vallabhbhai National Institute of Technology, Ichchhanath Mahadev Dumas Road, Surat (Gujarat), India. The appointment of Dr. Vishnu Narayan Mishra as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal. Please send any expressions of interest to elixirpublishers@gmail.com.

We are very happy to announce that from 29th May 2013, Dr.Laith Ahmed Najam has joined the team of Elixir Editorial Advisory Board. He will carry a special responsibility for dealing with manuscripts based on Nuclear Physics and Radiation Physics. Dr.Laith Ahmed Najam is currently working as Department of Nuclear Physics and Radiation Physics, Mosul University, Iraq. The appointment of Dr.Laith Ahmed Najam as member Editorial Advisory Board strengthens the links and will make it easier for prospective authors to establish contact with the journal. Please send any expressions of interest to elixirpublishers@gmail.com. Sincerely Editor-in-Chief

Early morning urine, stool and blood samples were collected from 1000 randomized persons at four different sites within the period of six months and screened for presence of Salmonella entericatyphi. Attention was given to clinical patients as well as healthy persons, particularly student community. Bori General Hospital and Sita-Esther Diagnostic Laboratories, Bori, were considered to access the clinical patients. Birabi Memorial Grammar School and Ken SaroWiwa Polytechnic, Bori, were considered for the healthy persons. Analysis were conducted on seven hundred samples from clinical patients, five hundred from Bori General Hospital and two hundred from Sita-Esther Diagnostic Laboratories, Bori, whereas three hundred samples from healthy people were also screened, one hundred from Birabi Memorial Grammar School and two hundred from Ken SaroWiwa Polytechnic, Bori. Comparative analysis of results indicated 60% Positive for blood, 30% Positive for Urine and 40% Positive for Stool. Evaluation of results show that 60% of the total population tested positive for Salmenella enterica typhi by serologicalfebrile antigen, but only 40% had evident visible growth of bacterial colonies, identified as salmonella typhi, in stool. The differences in results from blood, stool and urine from the various samples are likely due to patients being on a recent or current antibiotic treatment in general, or not being able to properly collect the Early morning Urine as directed, in case of Urine samples. High level of antibiotic potential(300mm), were seen in Augmentin, Ciprofloxacin and Chloramphenicol.

The aim of this paper is to study the flow of visco-elastic fluid of Rivlin-Ericksen and Walters type through a porous media bounded by a rectilinear pipe of uniform cross section in the presence of a transverse magnetic field. The flow takes place under the action of transient and periodic pressure gradients. Using integral transform technique, the exact solution for velocities have been obtained in case of visco-elastic Rivlin-Ericksen fluid and Walters fluid. Finally various cases of permeability of the porous media have been discussed for both the fluids.