Journal of Scientific and Engineering Research

1-15

Authors: Adham Hadi Saleh

In this paper, we have described how we can generate redundancy bit for (64 and 128) information data bits. These redundancy bits are to be interspersed at the bit positions (n = 1, 2, 4, 8, 16, 32, 64 and 128) of the original data bits, So to transmit 64 bit information data we need 7 redundancy bit to make 71 bit data string and 8 redundancy bit to make 136 bit data string. At the destination receiver point, the data may be corrupted due to noise. In Hamming technique the receiver will decide if data have an error or not, so if it detected the error it will find the position of the error bit and corrects it. This paper presents the design of the transmitter and the receiver with Hamming code redundancy technique using VHDL for (64 and 128) input data. The Xilinx ISE 10.1 Simulator was used for simulating VHDL code for both the transmitter and receiver sides.

22-27

Authors: Ezeokonkwo JU, Anyanechi CN Ifeanyi

The assessment of quality of some brand of cement in south east Nigeria and the controversy of building collapse was carried out with four brands of cement in four brands of cement in the market namely Ibeto cement, Danqote cement, Bua cement and Unicem cement. The following tests as specified by SON(NIS444-1:2003)compressive strength, setting time,soundness and chlorine content as test parameters to ensure quality control and quality assurance of cement in Nigeria were conducted. All the cement brands tested met the required standard set by SON. It was also discovered that the controversy linking cement quality to building collapse is misapplication of cement products. It was recommended that SON should upgrade the quality of cement sold in Nigeria to 32.5, 42.5 and 52.5as well as their quality and purpose should be clearly written on their packaged bags and public enlightenment on the different brands of cement and their uses amongst others.

36-46

Authors: Sachin V Pathak, NRNV Gowripathi Rao

Agricultural mechanization has been considerably progressed over the last few years. It employs about 65% of the work force and provides livelihood to about 70% of the population. About 18% of the Gross Domestic Product (GDP) comes from agriculture. It is believed that the benefits of modern technology have been restricted to farmers with large landholdings but the fact is that even small farmers are adopting and utilizing selected farm equipments for efficient farm management through custom hiring. Mechanical equipments for various farm operations are generally being used by the farming community and a decline in animate power is being observed. Use of Mechanical power is resulting in improved land usage and labour productivity owing to higher gains in farm productivity. Tractor mounted implements have become popular and being commercialized. Harvesters, elevators, threshers for cereal crops and crop specific machine are developed, been used on a large scale and commercialized. A future requirement for farm equipment and technologies include rota-tiller for seedbed preparation, till planter, strip till drill, pneumatic precision planter, sugarcane sett cutter planter, vegetable transplanter and check-row planter, for sowing and planting. Power weeders and equipment for chemico-mechanical weed management, electro-static spraying and tall tree spraying are required. Harvesting equipment for sugarcane and cotton are required to be developed. R&D institutions in the country have developed a number of useful technologies for mechanizing farm operations. A brief account of these developments has been discussed in this paper.