Today dc converters are widely used in industrial applications. The research on DC converters are typically focused on determining the optimum switching method. In this study, a push-pull converter model arranged in MATLAB / Simulink digital environment, the output voltage in response, using with proportional integral control (PI) , proportional integral derivative control (PID) and fuzzy logic control ( FLC) methods performance were examined. PI, PID and fuzzy logic control methods for MATLAB / Simulink environment necessary simulation models were constructed and compared the results in terms of stability and efficiency of these three approaches.

The aim of this article is to identify the main contemporary challenges affecting the sustainability of MFIs in Greater Accra Metropolis. Notwithstanding the benefits accrue from microfinance business in other part of the world; most MFIs have failed in delivering their promises in the Republic of Ghana (Awojobi 2011).Employing a cross-sectional survey design, data on the variable  was collected via self-administered questionnaires, distributed to 30 licensed microfinance institutions with sample size of 300 respondents in Accra. A multi-stage sampling technique procedure was adopted for the study. Analyses of data from the 300 retrieved questionnaires involved descriptive statistics and standard multiple regression techniques. The study revealed that regulation and supervision, institutional framework, coordination, access to finance for the development of MFIs in Ghana is challenged with poor implementation and corruptions. Also respondents rated regulation and supervision as the most challenging among all the dimensions under consideration. On the other hand, the data/information and dissemination has significant positive effect on microfinance sustainability based on respondents’ response

Two different carbonous materials have been used in this study as adsorbents for the investigation of the adsorption kinetics and isotherms of two pesticides: (MCPA and Imazapic) from aqueous solution at various pH. Two simplified kinetic models, pseudo-first-order and pseudo-second-order, were used to predict the adsorption rate constants and activation energy. Both pesticides followed pseudo-second-order kinetics on both adsorbents. The adsorption capacity of activated carbon was found to be relatively higher in acidic rather than in basic solutions for both agrochemicals. The equilibrium data were analyzed by Langmuir, Freundlich, Temkin, Sips and Guggenheim–Anderson–de Boer (GAB) isotherms in order to define the best correlation model for each pesticide on both adsorbents. MCPA adapted to Langmuir model on CAT and CARBOPAL with a R2=0.997 and 0.988, and Imazapic adapted to GAB model with R2=0.989 and 0.933, respectively.

World of business is getting bigger from time to time. In beginning of business, it was started by barter system then change to currency system which requires an exchange between goods and money by face to face. However, internet has been introduced and used by all people in this world. The advances in information and communication technologies (ICT) affect the social with negative and positive thought. In this paper, we will discuss about the positive thought of information system (IS) in business. Nowadays, most of organizations are using IS to create an easy way to expand their businesses while giving maximum benefits to customers. Al-Ikhsan Cooperation is selected as an organization to study about how information system helps an organization to have a better performance of the operation in the world of business. This project will give a lot benefit to both of the customers and sellers. Literature review, BMC (Business Model Canvas) and 4 Lenses of Innovation tools are used as methodology for this paper. By this project, the operation of the business will become smooth in all aspects, including supply chain and customer relationship management.

Thermoplastic starch (TPS)/poly(lactic acid) (PLA) blends were produced using glycerol and glycerol monostearate (GMS) (amphiphilic molecules) as a starch plasticizer and the micro- and macroscopic properties were evaluated. The blends were prepared in a twin-screw extruder after the physical mixture of all components, with a constant composition of starch and PLA but varying the glycerol and glycerol monostearate contents. The blends were thermopressed and the morphological, mechanical properties, water vapor permeability and sorption isotherms were evaluated. An increase in the GMS composition in the blend induced changes in the interphase of the PLA domains and the TPS matrix, as can be observed from the data obtained in the DMA and SEM analyses. The GMS affects the blend properties, decreasing the monolayer water absorption, increasing the stiffness and fragility of the sheets, and acting as a compatibilizer for the starch component in TPS/PLA blends.

The world is facing crisis of fossil fuels on which the large population is dependent and is likely to be exhausted in a few years. In these circumstances, the focus of the government of the several countries is on the renewable sources of energy. Biogas is one such fuel. Kitchen waste which is rich in organic content can be good source of feed material to the biogas plant and is likely to increase the efficiency. In this work, an attempt has been made to design floating head digester for 0.401 m³ of biogas generated per day. For this, several parameters like pH, loading rate, total solids content etc. have been investigated.

The implementation of appropriate security controls for an informa­tion system is an important task that can have major implications for the operations and assets of an organization. Security controls are the management, operational, and technical safeguards or countermea­sures prescribed for an information system to protect the confidential­ity, integrity, and availability of the system and its information. One such intelligent choice is Securing an enterprise through Governance, Risk and Compliance. This paper aims to make an imple­mentable, realistic, cost-effective, and workable platform available to IT managers which they can adapt to their own enterprises. Our methodology gives answers to several important questions that should be answered by organiza­tional officials when addressing the security considerations for their information systems.

Fins are the extended surfaces, generally used to enhance the heat transfer rates from the objects and safeguard them from failure. Heat transfer characteristics under forced convection are investigated on fins experimentally by varying parameters like surface area, temperature difference and Reynolds number and heat transfer distribution is analyzed at different loads.

During the experimental investigation, variations of Reynolds number and surface areas greatly affect the heat transfer rates. Base temperature for annular fins is reduced by 30% when compared to 11mm diameter fin due to increase in surface area about 40%. Base temperature for annular fins is reduced by 10% when compared to 31mm diameter fin due to decrease in surface area about 41%. It is also observed that at higher heat load 45W, overall fin efficiency of annular fins is increased by 44 % and 8% when compared to fin with diameter 11mm and 31mm respectively.

The present study aims to investigate  the fresh, strength and durability of rubcrete and rubcrete with steel fibres. A superplasticizer of Fosrock chemicals CONPLAST SP430)(G8) (an aqueous solution of sulphonated naphthalene polymer) was used to increase the workability of concrete. carried out to compare the properties of control mix (replacement of coarse aggregate 0% ) with other mixes (replacement of coarse aggregate 10%,20% and 30% ). The work was further extended to fiber reinforced concrete i.e by incorporating steel fibres for the above stand replacement mixes. Various mechanical characterstics were investigated in terms of compressive strength, tensile strength and flexural strength. Test result shows that compressive strength, tensile strength and flextural strength decreases with increase in rubber content but increases with increases in fiber content. The durability properties which includes carbonation was also studied in which concrete indicater basicity in nature.The aim of the present work was to use waste tyres as to increase the strength of cement concrete. A series of tests were conducted to study the effect of 10% ,20% and 30% replacement of cement by  solid waste.The compressive strength, split tensile strength and the flexural strength test were determined for the mixes at the curing age of 7 days and 28 days. The results obtained for the above mixes were compared to investigate the effects of partial compressive strength of steel fibres. Use of waste tyres in concrete can prove to be economical as it was non useful waste and free of cost.

Players in the hospitality industry have constantly been in search of new ways to improve their daily operations. In order to provide quality service, the utilisation of advanced technology is imperative. In the running of restaurants specifically, the utilisation of technology can increasingly be seen in their daily operations. One such example is the shift from using the traditional paper-based system to Personal Digital Assistants (PDAs) for purposes of taking orders. This technological shift is believed to be able to attract more customers and boost the efficiency of operations in restaurants. Thus, the purpose of this research paper is to provide a solution for the betterment of restaurant services by incorporating a Tablet-based Ordering System (TOS) called Restaurant Ordering System or in short MyROS. This paper proposes the design and implementation of the TOS and discusses its expected effects on the operations of Nandos restaurant outlets. This system requires the installation of tablets at each customer table which have the ability to display the details of the menu and the price, and deliver information into a centralised database. The customer tablet, kitchen display, and the cashier counter connect directly with each other via Wi-Fi. This wireless application is user-friendly, enhances efficiency by saving time, reduces human errors, and has features to enable the collection of customer feedback. This paper is based on a study conducted by Multimedia University on the implementation of the TOS in enhancing dining table services. The conceptual solution suggests that the TOS, if executed properly, can provide better value for both Nando’s and its customers.

The Sierpinski (SPK) geometry has a paramount application in multiband antennas. The multi frequency characteristics of the SPK are characterized by its scaling factor and successive iterations. Here I propose a modified fractal Sierpinski patch antenna capable to work with multiband wireless application is proposed. Various heights of a triangle component in Sierpinski antenna are compared to achieve the desired resonant frequencies and then a coplanar wave guide feed is used to achieve more multiband resonant frequencies within 0-7 GHz frequency range. The characteristics for Return loss clearly shows that the antenna can be utilized for WLAN and also GSM bands for VSWR<2.

Green finance represents a wide-ranging challenge to the traditional constructs of financial law. New green instruments threaten to transform conventional investment practices (ethical investment), lending standards associated with project finance (environmental/social impact assessment), and accounting conventions (green/social reporting). Green financing is not new but effective concept in context of Indian Economy. It focuses on investing in environment friendly projects, technologies and policies. This paper discuss the challenges and opportunities in front of India in pursuance of Green Financing and also highlights environment friendly trends in Indian Economy like green jobs, green taxes, etc. which reflects the responsibility of government and corporate towards society and environment. The objective is to bring out the role of financial sector in promoting and facilitating green growth. There are certain steps taken by government and big business houses to conserve the Indian environment but scarcity of resources plays a major hurdle in goal towards Green Financing along with administrative barriers, lack of entrepreneurship, limited access to financial resources, lack of skills and technologies, etc