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BIM in Multifamily Design &Construction

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Journal of Building Construction and Planning Research 2018年第4期6卷 331-339页

作者： Matt Jefferies swarnali Ghosh Dastider Washington University in St. Louis St. Louis MO USA School of Engineering & Applied Science Washington University in St. Louis St. Louis MO USA

In 2014, the National Association of Homebuilders conducted an initial survey about the use of Building Information Modeling (BIM) in residential construction. They found that BIM had not been widely adopted, but there was interest in future use. Four years later, the authors, Prof. Ghosh Dastider and Matt Jefferies at Washington University in St. Louis used a similar methodology to see what has changed. They found a significant increase in BIM’s application in the multifamily residential industry. Based on data collected from the re-conducted survey, the authors concluded with the future predictions on how use of BIM will accelerate in residential construction market in next few years. Few significant findings indicate increased use of BIM among contractors along with design built firms, as well as during the construction phase and life cycle analysis.

关键词： BIM Multifamily Design & Construction High-Rise Residential Technology

Analysis of a hand-foot-mouth disease model

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International Journal of Biomathematics 2017年第2期10卷 1-47页

作者： swarnali Sharma G. P. Samanta Department of MathematicsIndian Institute of Engineering Science and Technology Shibpur Howrah 711103 India

In this paper, we have introduced a six-compartmental epidemic model with hand, foot and mouth disease (HFMD) infection. The total population is divided into six subclasses, namely susceptible, exposed, infective in asymptomatic phase, infective in symptomatic phase, quarantined and recovered class. Some basic properties such as boundedness and non-negativity of solutions are discussed. The basic reproduction number ( R 0 ) of the system is obtained using next generation matrix method. Then the deterministic dynamical behaviors of the system are studied. Our study includes the existence and stability analysis of equilibrium points of the system. The sensitivity analysis of our system helps us to find out the parameters of greater interest. Next, we deal with the epidemic model with three controls (two treatment controls with quarantine control). We show that there exists an optimal control, which is effective in controlling the disease outbreak in a cost effective way. Numerical simulation is presented with the help of MATLAB, which shows the reliability of our model from the practical point of view.

关键词： Hand, foot and mouth disease (HFMD) infection basic reproduction number equilibrium points local and global stability optimal control

Encroachment of the Buriganga River in Bangladesh

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Journal of Minerals and Materials Characterization and Engineering 2017年第5期5卷 266-273页

作者： swarnali Mahmood Fatema Tuz Johra Nourin Ayesha Siddika Tazeen Fatima Khan Institute of Water and Flood Management Bangladesh University of Engineering and Technology Dhaka Bangladesh Department of Soil Water and Environment University of Dhaka Dhaka Bangladesh

A survey on different aspects of Buriganga River encroachment was conducted in a 300 meter long encroached part of the river located in Dhaka, Bangladesh. A total of 100 respondents were surveyed and three Focus Group Discussions (FGDs) were arranged prior to the semi-structured questionnaire survey. It was observed that almost all of the respondents migrated to the study area. The majority of the respondents had better business opportunity (69.23%) as the cause of encroachment. Significant portions of the respondents occupying the encroached area were found to be landless (36.84%), small businessmen (31.58%) and people with political affluence (26.32%). Major portions (23.33%) of the encroached land were used for industrial development as well as housing and developmental projects. Negative health impact (40%) was found to be the main adverse effect of encroachment of the river. Other adverse effects included economic loss through obliteration of fisheries (35.71%), scarcity of clean water (32.14%), reduction of aesthetic value of the surroundings (25%) etc. For the protection of the river, the majority of the respondents opted for relocation of the industries (46.15%) and enforcement of strict rules and regulations (38.46%).

关键词： Buriganga River Encroachment Respondents Questionnaire Survey

Stability analysis and optimal control of an epidemic model with vaccination

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International Journal of Biomathematics 2015年第3期8卷 45-72页

作者： swarnali Sharma G. P. Samanta Department of MathematicsIndian Institute of Engineering Science and Technology Shibpur Howrah 711103 India

In this paper, we have developed a compartment of epidemic model with vaccination. We have divided the total population into five classes, namely susceptible, exposed, infective, infective in treatment and recovered class. We have discussed about basic properties of the system and found the basic reproduction number (R0) of the system. The stability analysis of the model shows that the system is locally as well as globally asymptotically stable at disease-free equilibrium E0 when R0 1 endemic equilibrium E1 exists and the system becomes locally asymptotically stable at E1 under some conditions. We have also discussed the epidemic model with two controls, vaccination control and treatment control. An objective functional is considered which is based on a combination of minimizing the number of exposed and infective individuals and the cost of the vaccines and drugs dose. Then an optimal control pair is obtained which minimizes the objective functional. Our numerical findings are illustrated through computer simulations using MATLAB. Epidemiological implications of our analytical findings are addressed critically. [ABSTRACT FROM AUTHOR]

关键词：稳定性分析最优控制疫苗接种流行模型流行病模型无病平衡点全局渐近稳定局部渐近稳定