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"The aim of the present study is to build somemathematical models and then to forecast some fertility parametersin urban area of Bangladesh. For this purpose, the secondary timeseries data on Crude Birth Rate (CBR), Total Fertility Rate (FFR).Gross Reproduction Rate (GRR) and Net Reproduction Rate (NRR)of various issues duly published by Bangladesh Bureau of Statistics(BBS) have been used in the present study. A few mathematical timetrend models have been fitted to time series data of CBR, TFR, GRRand NRR It is _found that the CBR follows quadratic H.e. parabolic)polynomial model while the TPR, GRR and NRR follow simplelinear regression model. Model validation technique .such as Cross-Validity Prediction Power (C VFP), pi, , is applied to these modelsto verify how much these models are valid or not. It was found thatall these models are more than 95%, 79%, 82%, and 72% stablerespectively and their shrinkages are only 0.00739Z 0.032l33.0. 027916, and 0.0424229, respectively. These rates have beenforecasted during 1999-2005 using these time trend models."

"The aim of the present study is to estimate some mortalitymeasures such as the age specific death rates (ASDRA), infantmortality rate (IME) and me table crude death rate (CDR) for male,female and both sexes of Bangladesh in 2005. For this purpose, twoabridged life tables, one for male and other for female wereconstructed using the corresponding secondary data on lifeexpectancy at birth of Bangladesh in 2005 taken from Islam (2003).These were compared to the values in 199] and it was observed thatthese rates were showing decreasing trend during 1991-2005.Moreover, a mathematical model was fitted to the number ofpersons surviving at an exact age x (lx) only for male of Bangladeshin 2005. Model validation technique, cross validity predictionpower (C VFP) and F-test, showed that the mathematical model wasvalid and hence, fit is well. Instantaneous force of mortality ( |J. X )only for male of Bangladesh in 2005 was estimated And it wasfound that |.L X exhibited decreasing trend up to age 20-24 andincreasing in the remaining age group but rapidly increasing afterage 50 years to infinity."

"This book is thematically positioned at the intersections of Urban Design, Architecture, Civil Engineering and Computer Science, and it has the goal to provide specialists coming from respective fields a multi-angle overview of state-of-the-art work currently being carried out. It addresses both newcomers who wish to obtain more knowledge about this growing area of interest, as well as established researchers and practitioners who want to keep up to date. In terms of organization, the volume starts out with chapters looking at the domain at a wide-angle and then moves focus towards technical viewpoints and approaches."

"The paper examines fertility differentials between the rural and urban areas of the former Bendel State. Studies in the 1960s show no discernible pattern of rural-urban fertility differentials in Africa Nigeria inclusive. Although some studies have recorded urban fertility being actually higher than the rural, others have shown the contrary with the rural areas having higher fertility level. There is therefore, the need for a clarification of the controversy. The present paper aims at filling this gap by establishing if fertility differentials between both communities are myth or reality in Bendel State."

"In this paper an attempt has been made to study the effects of the process parameters of wire cut electrical discharge machining (WEDM) on Magnesium-Silicon Carbide MMC with 5% SiC in particulate form. For the analysis, six factors, namely pulse on time, pulse off time, spark gap voltage, peak current, dielectric flushing pressure and servo feed have been taken and a Taguchi L16 orthogonal array for two levels was used. Response surface methodology was also used to develop second-order models for material removal rate (MRR) and surface roughness (SR). From the analysis of variances, it has been observed that pulse on time and pulse off time were the most significant parameters among all those observed in predicting the MRR and SR, respectively."

"Gas merupakan sumber energi yang sangat besar potensinya di Indonesia. Penelitian ini memodelkan tingkat produksi gas dari tiga perusahaan besar dan juga tingkat produksi Indonesia secara keseluruhan kemudian memprediksi tingkat produksi gas pada periode yang akan datang. Dalam hal ini digunakan analisis deret waktu ARIMA dan data dari periode Januari 2005 ? Desember 2011. Hasilnya model ARIMA yang sesuai untuk meramalkan tingkat produksi Total E&P Indonesia adalah ARIMA (4,2,1) dengan MAPE 4.854 %, Pertamina adalah ARIMA (2,2,2) dengan MAPE 5.864%, dan Conoco Phillips Grissik sesuai dengan ARIMA (4,2,1) dengan MAPE 6.207%. Sedangkan model ARIMA peramalan tingkat produksi gas di Indonesia adalah ARIMA (4,2,1) dengan MAPE 3.607 %.

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Gas is an enormous sourceenergy potential in Indonesia. This study is to model gas production rate of three major companies and the production of Indonesia as a whole and then predict the gas production rate in the next period. For the purpose, the data used are from the period January 2005 - December 2011. The result is the appropriate ARIMA models to forecast the gas production rate of Total E & P Indonesia is ARIMA (4,2,1) with MAPE 4.854%, Pertamina is ARIMA (2,2,2) with MAPE 5.864%, and Conoco Phillips Grissik according to ARIMA (4,2,1) with MAPE 6.207%. While ARIMA model forecasting gas production rate in Indonesia is appropriate ARIMA (4,2,1) with MAPE 3.607%."