Volume 5,Issue 1,January 2010http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/15332024-02-28T01:55:36Z2024-02-28T01:55:36ZSPEECH RECOGNITION FRONT-END FOR SEGMENTING AND CLUSTERING CONTINUOUS BANGLA SPEECHRahman, Md. MijanurKhan, Md. FarukuzzamanMoni, Mohammad Alihttp://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/5132019-05-28T09:52:26Z2010-01-01T00:00:00ZSPEECH RECOGNITION FRONT-END FOR SEGMENTING AND CLUSTERING CONTINUOUS BANGLA SPEECH
Rahman, Md. Mijanur; Khan, Md. Farukuzzaman; Moni, Mohammad Ali
This research is concerned with the
development of speech recognition front-end for
segmenting and clustering continuous Bangla
speech sentence to some predefined clusters.
From the study of different previous research
works it was observed that the front-end is an
important part of any speech recognition system.
In our work, the original speech sentences were
recorded and stored as RIFF (.wav) file format.
Then a segmentation approach was used to
segment the continuous speech into uniquely
identifiable and meaningful units. Among the
different techniques, the word/sub-word
segmentation is simple and produces very good
results. This is why this technique was selected for
speech segmentation to obtain improved
performance. After segmentation, the segmented
words were clustered into different clusters
according to the number of syllables and the sizes
of the segmented words. The test database
contained 758 words/sub-words segmented from
120 sentences. Each sentence was recorded from
six different speakers and saved as a different
wave file. The developed system achieved the
segmentation accuracy rate at about 95%.
2010-01-01T00:00:00ZPRODUCTION OF JUTE YARNS WITH LOW CONTENT OF UNSAPONIFIABLE MATTERSDilruba, F. AAmin, M. N.Molla, M. E.Rahman, S. M. BJafrin, Shaminahttp://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/5122019-05-28T09:52:26Z2010-01-01T00:00:00ZPRODUCTION OF JUTE YARNS WITH LOW CONTENT OF UNSAPONIFIABLE MATTERS
Dilruba, F. A; Amin, M. N.; Molla, M. E.; Rahman, S. M. B; Jafrin, Shamina
Castor oil having low content of
unsaponifiable matters was chosen for the
development of new jute batching emulsion
processes. The suitability of the castor oil was
also assessed in terms of its favourable colour,
odour, specific gravity, acid value, iodine value,
saponification value, viscosity, pour points and
flash points in comparison to those of
conventional JBO. Different recipes for the
production of emulsions were standardized in the
industrial scale and their suitability were assessed
according to their stability, specific gravity,
temperature, viscosity and pour points. The
recipes were used to spin jute fibre in the jute mill
machines. The yarn products were studied to
evaluate their work performances based on their
physico-chemical properties: moisture regain,
t.p.i., W.I., count, strength, tenacity, extension,
textile modulus, toughness, QR, oil content and
unsaponifiable matters. The yarn products were
particularly evaluated in terms of their
unsaponifiable matters based on the IJSG
criterion. The yarns of processes show quality
ratio 93.93 to 104.20 and unsaponifiable matters
ranging from 126.05 to 414.92 mg/kg yarn and
easily pass the IJSG criterion. The processes
therefore appear to be of commercial importance.
2010-01-01T00:00:00ZONE-DIMENSIONAL FINITE ELEMENT DISCRETIZATION OF CRACK PROPAGATION THROUGH PARALLEL COMPUTATIONIslam, Md. RajibulAlias, Normahttp://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/5112019-05-28T09:52:25Z2010-01-01T00:00:00ZONE-DIMENSIONAL FINITE ELEMENT DISCRETIZATION OF CRACK PROPAGATION THROUGH PARALLEL COMPUTATION
Islam, Md. Rajibul; Alias, Norma
In this study, a new approach of the
application of finite element method is presented,
to solve the initial stages of crack propagation
problems which mean the deformation due to the
stress and strain of a material. In early
applications of the finite element method for the
analysis of crack propagation, the crack-tip
motion was modelled by discontinuous jumps. We
have implemented one dimensional finite element
discretization to solve crack propagation
problem. The parallel algorithm with parallel
computer system has been used in order to
perform the computational analysis of finite
element for this study. Parallel Virtual Machine
(PVM) has been used as a message passing
software with Parallel Computer System. The
result of this study will be useful in the
mathematics and engineering fields. In
mathematics, the research will widen the
application of finite elements in solving the
engineering science problems.
2010-01-01T00:00:00ZNATURAL CONVECTION FLOW FROM A POROUS VERTICAL PLATE IN PRESENCE OF HEAT GENERATIONFerdousi, AmenaAlim, M. Ahttp://dspace.daffodilvarsity.edu.bd:8080/handle/20.500.11948/5102019-05-28T09:52:25Z2010-01-01T00:00:00ZNATURAL CONVECTION FLOW FROM A POROUS VERTICAL PLATE IN PRESENCE OF HEAT GENERATION
Ferdousi, Amena; Alim, M. A
Natural convection flow from a porous
vertical plate in presence of heat generation have
been presented here. The governing boundary
layer equations are first transformed into a non
dimensional form and the resulting non linear
system of partial differential equations are then
solved numerically using finite difference method
together with Keller-Box scheme. The numerical
results of the surface shear stress in terms of skin
friction coefficient and the rate of heat transfer in
terms of local Nusselt number, velocity as well as
temperature profiles are shown graphically and
tabular form for a selection of parameters set of
consisting of heat generation parameter Q,
Prandtl number Pr.
2010-01-01T00:00:00Z