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will be more appropriate to use a study INTEGERS. J. Bang. Acad. Sci., 2006, 30 (1),
conducted on our local population for reference 127-131.
in our country, rather than a study derived from
a quite different population, whose stature is not A method is developed to solve a major problem of
like ours. some security schemes. The technique is to solve
the problem is named multiplication and division-
315 QUDDUS S.R. (SONOLAB, Center for division method. The problem (complexity) is to
Dignostic Ulrasound,150, Green Road, Panthapath
n n
Crossing, Dhaka). GESTATIONAL AGE
ESTIMATION FROM FETALHEAD compute the products, Q = ∏ qi and Qi= ∏qi
CIRCUMFERENCE IN BANGLADESH. i=1 i=1
j=i
Bang. Med. J., 2007, 36 (1), 12-15. for i=1,2, …, n. Here they reviewed the best
technique (multiplication division technique) that
Fetal head circumference is one of the most has been ever published. After that the
reliable parameters for determining gestational Multiplication and division-division method is
age. But due to absence of their own table, we they discussed. They implement two methods
unable to accurately estimate the gestational age. multiplication-division and multiplication and
Therefore a nomogram of Bangladeshi population division-division) to compute the products. From
is prepared. the experimental results they find that
multiplication and division-division method is
A prospective, cross-sectional nomogram was con- better than multiplication -division method.
structed from 916 well dated, singleten fetuses by
using Polynomial (cubic) regression models. 317 KABIR, M.H. (Dept. of Computer
Previously established monograms of Caucasian Science and Telecommunication Engineering,
population were compared with it. Noakhali Science and Technology University,
Noakhali). A Fast Procedure for Transmission
Percentiles, means and standard deviations (SD) were Loss Allocation of Power Systems by Using Dc-
derived. Fetal charts of the raw data with OPF. Bang. J. Sci. Ind. Res., 2007, 42 (3), 249-
superimposed fitted curves were constructed. It 256.
showed a good fit to the data. There was a gradual
th
th
th
increase of the HC measurements of 10 , 50 and 90 Deregulation of power industry has made us think
th
centiles up to 37 week with a gradual increase of SD over the transmission loss allocation to network
showing increasing dispersion of data. Between 13 to users and to various interconnected transactions
26 weeks gestation, there was no clinically important including bilateral one. It is an important issue to
difference between this nomogram and these prepared be solved exactly. Because of the non-linear nature
on Caucasian population in terms of predicted of power flow and power loss, it is very difficult to
gestational age. Clinically significant difference in segregate and to allocate losses among the
predicting gestational age appeared after especially participants properly. This paper presents an
after 32 weeks onwards, by 2 to 3 weeks. These instantaneous loss allocation algorithm including
findings suggest that this chart is unique for DC-Optimal Power Flow. Using Incremental
Bangladeshi population and can be especially useful Transmission Loss (ITLs) factors and the power
for accurate dating of pregnancies in the 3 trimester. outputs of generators, they have calculated
rd
preliminary loss to each generator. Calculating loss
620 : ENGINEERING allocation rates from the preliminary losses, the
final loss allocation has been done (according to
loss allocation rate) to meet the total loss
316 ISLAM, M.R. (Computer Science & calculated by DC-OPF. The effectiveness of this
Engineering Discipline, Khulna University, procedure has been studied for a small model
Khulna). A METHOD FOR FINDING power system and also for the IEEE-118-bus
PRODUCTS OF A LARGE NUMBER OF system.
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