Written by Organic Chemistry co-author Neil Schore, this invaluable manual includes chapter introductions that highlight new materials, chapter outlines, detailed comments for each chapter section, a glossary, and solutions to the end-of-chapter problems, presented in a way that shows students how to reason their way to the answer.
In this work we study the application of the Method of Fundamental Solutions (MFS) for the numerical solution of eigenvalue problems in partial differential equations. The MFS is a meshless method that was previously applied only to the calculation of eigenfrequencies for domains with simple geometries and Dirichlet boundary conditions (cf. [Karageorghis 2001]). In this work we show that a particular choice of the point-sources allow to obtain excellent results for a fairly general class of domains. We consider Dirichlet and Neumann boundary conditions for the eigenvalue problem associated to the Laplace operator in the interior and exterior cases for two-dimensional domains and for the interior case in three-dimensional domains. The case of domains with corners and cracks is also addressed enriching the MFS base of functions with some particular solutions adapted to these domains. We also present results of the application of the MFS to the eigenvalue problem associated to the Bilaplacian operator and to the Lame operator, in the elastic case.
The increasing concerns about climate change and global warming has increase the interest in reducing the emissions of greenhouse gases. Thus, the chemical absorption of carbon dioxide by aqueous amine solutions has been investigated over the last decades. In the carbon dioxide absorption tests performed in a pilot unit, the following aqueous amine solutions with a concentration of 10 % by weight were tested: diethylamine, monoethanolamine, piperazine and ethanolamine. The tests were performed with an absorption time of 240 minutes. The obtained results for the tested aqueous amine solutions were: 0.492 mol CO2/mol amine for the diethylamine aqueous solution, 0.409 mol CO2/mol amine for the MEA aqueous solution, 0.395 mol CO2/mol amine for the PZ aqueous solution and 0.321 mol CO2/mol amine for the EDA aqueous solution. A cost analysis was performed in other to see which one of the amines was the most economical solvent. After analyzing the carbon dioxide loading capacity and the price per liter for each one of the amine, it was concluded that DEA was the most economical solvent, with a loading capacity of 0.982 mol CO2/mol amine and a cost of 25.70 €/L.
Post harvest management of cereal crops is a major concern for smallholder farmers in developing countries. A number of these countries lose between 30 and 40 per cent of cereals harvest due to inefficiencies in handling and are faced with threats of Aflatoxin due lack of timely and relevant information and knowledge on post harvest management of cereal crops. Decision-making by smallholder farmers is complicated by inappropriate and inefficient information transfer from research and extension services. Additionally, low literacy levels among these smallholder farmers usually prevent farmers from using agricultural information effectively. New developments in ICTs offer possible solutions to these problems and thus the need for carrying out this study. This study used agricultural information theory to analyze the existing Agricultural information systems on post harvest management of cereal crops among smallholder farmers in Bomet County, Kenya. Results revealed that 61% of smallholder farmers reported extension agents as source of agricultural information, 48% from mass media and 1 % from public research institutions and Universities .
The present study is an attempt to identify the financial issues of SMEs of Pakistan. Pakistan’s cotton ginning industry has chosen as a case. The general objective of the study is to analyze the financing issues of the small-scale industries with appropriate alternatives and financing solutions. The extensive theoretical framework about financing of SMEs along with seven hypotheses (for testing) has been included in research work as base of study. Both qualitative and quantitative research methods have been employed for the research work. Statistical data analysis techniques are used to analyze the data which was collected through questionnaire’s survey from SMEs and the results have presented with hypothesis testing. The findings of research work indicates that high interest rate on loans, heavy taxes, poor government policies, owner’s education level, old technology and poor legal and accounting self-efficacy are the major reasons of financial problems.Soft and friendly government policies, short and long term loans at lowest interest rate for running and technology up-gradation are recommended.Joint ventures are found to be the most suitable alternative for financial solutions.
We consider some recurrence relations, which has been investigated earlier by M. Qena. We extend some of the results regarding the existence of periodic solutions. Furthermore, we try to study the behavior of the solutions in other cases. We were able to show the unboundedness and specifically the monotone increasing behavior in many of these cases. We then started a bifurcation analysis for the behavior of the solutions, by which we used the computer in order to do some calculations without any rigorous mathematical proofs.
In the last decades the automotive industry is one of the main sources of air pollution and a major consumer of oil resources. Future oil depletion and environmental damage produced by the gas emissions push automobile industry to improve traction efficiency and to reduce oil consumption and pollution.Because of this requirements, the hybrid electric vehicles have become very popular. Nowadays, it is difficult to imagine the future without hybrid electric vehicles. These days, the technological innovations have led to the increased use of new types of electrical machines in hybrid electric vehicles such as permanent magnet flux-switching machine. The main purpose of this research is to offer an overview on some electrical motors for propulsion of the hybrid electric vehicles power train. Three different electrical motors, respectively permanent magnet flux switching motor, permanent magnet synchronous motor and switched reluctance motor, are fully analyzed and the obtained results are compared, the focus being on the torque density value.
A new model of a queueing system with two buffers, both finite in one case and only finite in other case were considered. The study of the features like blocking, splitting, feedback, balking and reneging can be done. In present work the study of splitting and up to some extent the study of blocking is done. The analytical solution of the tandem queue with splitting feature is in itself novel. In addition an algorithm is also studied for the stationary process of each case to determine the distribution of the queue length and other queue parameters as consequences. Although, solutions were not explicitly displayed in the closed forms, it can be accessed through the algorithm. The numerical examples demonstrate the behavior of the model and some imbalances that occurs.
In this book the Author critical analyse the indispensable success factors that can influence a successful implementation of an integrated offline and online shopping system in any organisation in African market settings and give recommendations on how to manage those success factors for a successful implementation. The book treats fundament issues surrounding moving from offline walk –in shops to online shopping system for the first time. The author research thoroughly on African market settings, Nigerian market which includes the biggest market in West Africa was used as a case study. Most of the impediments found were solved and solutions given out, the solutions have been adopted by some of the organisations in Nigeria. The research were carried out at David Goldman informatics Centre, university of Sunderland and proven feasible. The book is highly recommended for entrepreneurs and big organisations who want to integrate offline and online shopping system in their organisations.
This book is concerned with the study of nonlinear water waves, which is one of the important observable phenomena in Nature. This study is related to the fluid dynamics, in general, and to the oceans dynamics in particular. The solutions of nonlinear PDEs with constant and variable coefficients, which describe the wave motion of undulant bores in shallow water, are investigated by using various analytical methods to illustrate the relation between solitary and water waves. The important ideas and results for nonlinear dispersive properties and solitons, which originated from the investigations of water waves, are discussed. The stability analysis for the second order system of PDEs is studied by using the phase plane method. In addition, we use perturbation methods to study the water wave problems for an incompressible fluid under the acceleration gravity and surface tension. The conservation laws of some PDEs are established. We illustrate the resulting solutions in several 3D-graphics showing the shock and solitary wave nature in the flow. This book contains many concepts of water wave motion and different mathematical methods that help researchers in the relevant topics.
In this book, we study the validity of the maximum principle (one of the most useful and best known tools employed in the study of partial differential equations) for some nonlinear elliptic systems, with variable coefficients, involving the weighted p-Laplcaian operators on bounded and unbounded domains. Also, using a different methods like the nonlinear theory of monotone operators, subsuper solutions method and an approximation (perturbation) method, we study the existence of positive weak solutions for some nonlinear elliptic systems, with variable coefficients, involving the weighted p-Laplcaian operators on bounded and unbounded domains.
This paper aims at investigating the polarographic behavior of cadmium (II) and constructing a calibration chart using a manual polarography. Solutions containing different concentration of cadmium (II) were prepared and analyzed by polarographic method. From the collected data, the polarograms were drawn for each analyzed test solutions. From the polarograms, diffusion current (Id) was determined for each solutions and plotted against their concentrations. The plot resulted in a straight line and it shows the linearity of diffusion current with the concentration of the depolarizer ion. The value of half wave potential (E1/2) was also determined for all solutions and it was found to be uniform. The log-plot was drawn by taking log[I/(Id-I)] as ordinate and the potential applied as abscissa. All the log plots resulted in a straight line in strictly increasing interval and their slope values were determined and found to be approximately in the environs of theoretical value (29.6 mV). This shows the reversible reduction of the depolarizer.
Case Study 1: Industrial Companies in Egypt, Case Study 2: King Abdel-Aziz Hospital in KSA, Case Study 3: Commercial Banks in Egypt, Case Study 4: Teaching Hospital in Egypt, Case Study 5: Healthcare Organizations in KSA, Case Study 6: Commercial Banks in Egypt, Case Study 7: Menoufia University Hospitals in Egypt, Case Study 8: Teaching Hospitals in Egypt, Case Study 9: Industrial Companies in Egypt, Case Study 10: Sadat City University in Egypt, Case Study 11: Commercial Banks in Egypt, Case Study 12: Teaching Hospitals in Egypt, Case Study 13: King Faisal Hospital in KSA, Case Study 14: Saudi banks in KSA, Case Study 15: Commercial Banks in Egypt, Case Study 16: Teaching Hospitals in Egypt, Case Study 17: King Abdel-Aziz Hospital in KSA, Case Study 18: Menoufia University Hospitals in Egypt, Case Study 19: Industrial Companies in Egypt, Case Study 20: Teaching Hospitals in Egypt, Case Study 21: Healthcare Organizations in KSA, Case Study 21: Healthcare Organizations in KSA, Case Study 22: Sadat City University in Egypt, Case Study 23: Commercial Banks in Egypt, Case Study 24: Teaching Hospitals in Egypt, Case Study 25: Saudi Banks in KSA.
The Book titled “A PANORAMIC STUDY ON EXTREME RESEARCH” focused on the values, practices, their relationships, advantages, disadvantages, recommendations, misconceptions, problems encountered in the implementation of Extreme Programming, along with them certain solutions were proposed based on the previous case studies. This dissertation intended to analyze various possibilities for applying quality assurance practices effectively to Extreme Programming. Provided, it should not affect negatively to the process and must lead to better quality assurance. Certain adaptations were recommended to Extreme Programming to make it more suitable for widest range of projects including small and large projects as well as critical and highly reliable systems.
A practical, nuts-and-bolts guide to architectural solutions that describes step-by-step how to design robustness and flexibility into an Internet-based system Based on real-world problems and systems, and illustrated with a running case study Enables software architects and project managers to ensure that nonfunctional requirements are met so that the system won't fall over, that it can be maintained and upgraded without being switched off, and that it can deal with security, scalability, and performance demands Platform and vendor independence will empower architects to challenge product-dictated limitations
A study about Administrative short falls in Health Care management in Fort Portal Regional Referral Hospital was carried out between October 2009 and July 2010. This study aimed at finding out administrative short falls in health care management in Uganda and took a case study of For Portal Regional Referral Hospital. The problem statement of the study was Inadequate financial and human resources as well as infrastructure which made health care administrative management in Ugandan hospitals a challenge which created need for this study to evaluate the administrative shortfalls in healthcare management in a Referral Hospital and finding their solutions.
A Case Study of Physiotherapeutic Treatment of Closed Patella Fracture. This book involves a case study on physiotherapeutic approach to a 35 year old male with closed patella fracture, 8 weeks after incident. The theoretical part aims to explain anatomical structure, biomechanics, kinesiology and etiology of this type of fractures. While the practical part refers to the case study; the examinations used and the effectiveness of the therapy with the approaches used.
The Study entitled “Conflict in Schools and its Management: A case study of Kaski district” has made an attempt to explore the situation of conflict and its management in the selected schools of Kaski district. This exploratory study was conducted in Kaski District with a focus on situation, sources, methods and ways of minimizing conflict in the schools. Teachers, SMC members and other intellectual persons were the respondent sample of the study. This study has tried to put an effort on the problems and solutions that are seen in the schools regarding conflict.
This research aims at solutions to problems associated with entrepreneurship business in Nigeria using Sweden as a role model where most entrepreneurs record more successes than in Nigeria. The study identifies differences among the two countries, concluding with recommendations for the Nigerian government and entrepreneurs based on best practices in Sweden for effecting strategic measures to maintain enabling and sustainable environment that will boost success and economic growth.
The study of nonlinear oscillators equations is of great importance not only in all areas of physics but also in engineering and other disciplines, since most phenomena in our word are nonlinear and are described by nonlinear equations. Recently, considerable attention has been direct towards the analytical solutions for nonlinear oscillators, for example, elliptic homotopy averaging method, amplitude-frequency formulation, homotopy perturbation method, parameter-expanding method, energy balance method, and others. The aim of this thesis is to study the periodic solutions for some physical systems which the mathematical formulation of these systems leads to a certain set of nonlinear ordinary differential equations of the second order.
Elasticity is a fundamental property of all substances occurring in nature. The theory of elasticity is concerned with the study of the response of elastic bodies to the action of forces. The importance of the application of the theory of elasticity in physics and technical mechanics involved in the stated problems from the viewpoint of mathematical analysis attracted the attention of the greatest investigators of the 20th centuries to this branch of science. This thesis is devoted to study some problems in the mechanics of elastic bodies, which might have some interesting applications in the Earthquake science, Geophysics,..., etc. or in the industry, under certain boundary conditions. The topics discussed here are classified into two parts. The first and second chapters are concerned with the determination of frequency in orthotropic non-homogeneous cylinder and sphere. The third and fourth chapters are concerned with the determination of stress in a dynamical non-homogeneous cylinder containing core, using the stresses-strains relationship in which the elastic constants and density are taken as functions of the radial coordinates in the absence of the body forces.