Journal Browsing
Volume: 8
Number: 1
June 2010
To see an article directly, click its Title. To see abstract, click its [Abstract] link.
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An Investigation of Wind Power Utilization for Irrigation in Bangladesh
M. N. Bagum, A. K. M. Masud, M. Q. Islam and C. A. A. Rashed
Abstract PDF
An Investigation of Wind Power Utilization for Irrigation in Bangladesh
M. N. Bagum, A. K. M. Masud, M. Q. Islam and C. A. A. Rashed
Abstract
In Bangladesh, farmers need adequate supply of irrigation water at right
time and in sufficient quantities for maximum agricultural production. In the
year 2007, only 60.01% of total cultivated areas were irrigated by different
mechanized equipments. Numbers of benefited farmer through mechanized
equipment were reduced by 1.01% from the year 2006 to 2007 due to increased
price of oil, fuel and scarcity of electricity. In the wake of the increasing world
energy crisis, which mostly affected the least developed countries, the interest
in alternative energy resources has been increased considerably. In this
regard, Wind as a source of energy can hold good prospect for an
underdeveloped country like Bangladesh. In this paper, a statistical analysis of
Wind characteristics and investigation of feasibility of Wind energy to drive a
hand-pump have been carried out. Weibull probability density functions of the
locations are calculated in the light of observed data and Weibull shape
parameter and scale parameter are also calculated. The main objective is to
find out Wind energy potential for irrigation purposes.
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Study of the Effect of Cutting Conditions on Micro- Hardness in Dry Machining of Hardened Steel En31 with CBN Cutting tool – by ANN Technique
M.V.R.D.Prasad and G.Ranga Janardhana
Abstract PDF
Study of the Effect of Cutting Conditions on Micro- Hardness in Dry Machining of Hardened Steel En31 with CBN Cutting tool – by ANN Technique
M.V.R.D.Prasad and G.Ranga Janardhana
Abstract
Dry machining is a machining process without coolant and it has become
more popular as a finishing process. The purpose of this paper is to obtain a
comprehensive understanding of the relation between cutting data and micro
hardness during dry turning with CBN cutting tool in En31 hardened steel.
The experiments were planned as per L27 orthogonal array with three levels
defined for each of the factors in order to develop the knowledge base for
Artificial Neural Network (ANN) training and validation. By using ANN
sensitivity analysis carried out and how the input parameters speed, feed rate
and depth of cut influenced on micro hardness discussed in this present paper.
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The Role of Technical and Vocational Education and Training in the Development of Small and Medium Sized Enterprises in Cameroon
Che Kum Clement
Abstract PDF
The Role of Technical and Vocational Education and Training in the Development of Small and Medium Sized Enterprises in Cameroon
Che Kum Clement
Abstract
This study, a survey research, was designed and carried out to determine the
role that technical and vocational education could play towards the
development of small and medium sized industries in Cameroon. A population
of 133 respondents, comprising 85 technical and vocational education and
training educators and 48 proprietors of small and medium sized industries
constituted the subjects of the survey. Three research questions were
formulated to guide the study. The research instrument for data collection was
a 24 item questionnaire which was face validated by three technical experts.
The research questions were analyzed using mean score and standard
deviation. The analysis was tested using the t-test at 0.05 significant levels. The
findings showed that among other things, skills development through technical
and vocational education and training is needed for the development of small
and medium sized enterprises in Cameroon.
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Assessing Cyclone Wind Hazard in Coastal Regions of Bangladesh
Shakila Kayum, Kazi Nusrat Jahan and Syed Rokanuzzaman
Abstract PDF
Assessing Cyclone Wind Hazard in Coastal Regions of Bangladesh
Shakila Kayum, Kazi Nusrat Jahan and Syed Rokanuzzaman
Abstract
One of the most dangerous Cyclone basins of the world located in the Bay
of Bengal and the population most affected lives in coastal regions of
Bangladesh. Bangladesh often suffers from many climate induced disasters
such as flood, drought, Cyclone etc. among which the Cyclone is the most
catastrophic one. The coastal morphology of Bangladesh influences the impact
of Cyclone hazards on the area. Especially in the south-western area, Cyclone
hazards increase the vulnerability of the coastal dwellers and slow down the
process of social and economic development. This includes districts like
Chittagong, Noakhali, Khulna, Patuakhali and Barisal where the Cyclones
strike most in Bangladesh. Cyclone continues to pose a dangerous threat to the
coastal populations of Bangladesh, despite improvements in the disaster
control procedures. After 1,38,000 persons died in the April 1991 Cyclones, a
rapid epidemiological assessment was carried out to determine factors
associated with Cyclone-related mortality and to identify prevention strategies.
The present study was aimed at exploring the probability of Cyclone
occurrence in Bangladesh coast along with the probable wind speed through the possible utilization of GIS. This study was oriented toward wind hazard
assessment of the Cyclones that make landfall in the coastal regions of
Bangladesh. For these purposes, a digital map of coastal areas is overlaid with
a grid of approximately 5 km in size and a wind field model is used to
estimate maximum sustained wind speed in each cell. Finally Cyclone
vulnerable zones are identified and coastal districts are compared based on the
parameters that are responsible for Cyclone risk and coping capacity of the
people that eventually give the picture of Cyclone vulnerability in the coastal
area of Bangladesh. It is hoped that this study will contribute in taking proper
disaster planning efforts in Bangladesh especially in the mitigation phase for
the reduction of damage from the Cyclone hazard.