Volume 32, Issue 2

The recent information technology industry has facing more security vulnerabilities. The attackers are the major threats in hacking the third party data. To prevent from those attackers, a high secured approach is required to transmit the data over the internet. The proposed approach is aimed to offer a high secured way of text contents with combined cryptographic approaches. The proposed research work implements data security and cryptographic key security.

This study aimed to find out the instructional management of principals and observe teachers’ teaching practices in MacArthur District, Division of Leyte. Employing descriptive-correlational research a survey design was chosen to make sure collection of data which precisely describes the nature of prevailing conditions at a specific point in time.

Principals in MacArthur District belonged to the old age. The district has more female principals than their male counterpart. Almost all of the school heads were married and experienced teachers and rendered lengthy service in their work. They possessed enough knowledge and skills in instructional management and were qualified for the principal position. They were appointed principals/Head Teachers in MacArthur District and were equipped with quality trainings in terms of managing the school.

 The extent of principal’s instructional management in terms of framing the school goals; communicating the school goals; supervising and evaluating instruction; coordinating the curriculum; monitoring student progress; protecting instructional time; maintaining high visibility; providing incentives for teachers; promoting professional development; and providing incentives for learning were almost always manifested or very high. Teacher’s teaching practices in terms of the learner and the learning; content knowledge and skills; instructional practice and professional responsibility were rated “Often” which manifested that the teachers in their respective classes has frequently performed the teaching pedagogy described as good.

It was concluded that the principals instructional management had affected the teachers’ teaching practices. The very high principal’s instructional management resulted to good and effective teaching practice in terms of the learner and the learning; content knowledge and skills, instructional practices and professional responsibility

The objective of this research work was to produce a carbon dioxide emission free cementious material. The geopolymer concrete is such a vital and promising one. In this present study the main limitations of fly ash based geopolymer concrete are slow setting of concrete at ambient temperature and the necessity of heat curing are eliminated by addition of Ground Granulated Blast Furnace Slag (GGBS) powder which shows considerable gain in strength. The Alkaline liquids used in this study for the polymerization process are the solutions of sodium hydroxide (NaoH) and sodium silicate (Na2Sio3) solution was taken to prepare the mix.

Concrete is the world‟s most versatile, durable and reliable construction material. Next to water, concrete is the most used material, which required large quantities of Portland Cement. Ordinary Portland Cement production is the second only to the automobile as the major generator of carbon di oxide, which polluted the atmosphere. In addition to that large amount energy was also consumed for the cement production. Hence, it is inevitable to find an alternative material to the existing most expensive, most resource consuming Portland Cement. Geopolymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. Fly Ash, a by- product of coal obtained from the thermal power plant is plenty available worldwide. Flyash is rich in silica and alumina reacted with alkaline solution produced aluminosilicate gel that acted as the binding material for the concrete. It is an excellent alternative construction material to the existing plain cement concrete. Geopolymer concrete shall be produced without using any amount of ordinary Portland cement.

Concrete is the most widely used man made material in construction industry and now we are making jungles of concrete in replacement of the natural habitat. There is no doubt it is most useful thing in construction industry but it has a negative impact also, just like a coin has two faces. Raw materials used in manufacturing of concrete affects the environment in one or the another negative way. Like manufacturing of cement produce carbon dioxide whereas the production of aggregates adds dust to the environment. Production of coarse aggregates also impact the geology of the area from they were extracted. So now the researchers in the field of Civil Engineering are moving their interest towards the use of materials that can cause least harm to the environment. A step taken in this direction is the use of waste products along with or in replacement of cement. Many of these materials are already in use, like silica fume, fly ash etc. Along with it many other materials are being added to concrete to improve its properties. Some of the materials are fibrous in nature and form a micro level reinforcement to improve the properties of concrete that mainly includes its strengths.

In this study, plastic is used as fiber in concrete. Plastic from the polyethylene terephthalate PET plastic bottles was firstly shredded into small pieces in form of fiber. It was then mixed with concrete containing silica fume in partial replacement of cement by 15%. Fiber was added in proportion of 0,2.5, 5, 7.5 and 10% by weight of cement without any replacement. Results shows improvement in strengths upto 5% and optimum quantity was concluded at 5% addition of plastic fiber.

Gravitational force is the most common force in nature. Gravitational force appears in between any two objects( masses). Now, our object is to find the range of gravitational interaction between two objects. The range of gravitational interaction is not infinite but finite.

One important scope of the Siting and Environmental Department that belongs to Egyptian Regulatory Body (ENRRA) is conducting search in the area of site selection and evaluation of nuclear installations. International Atomic Energy Agency developed an Approach for its member’s states 1994 using in site selection and evaluation of radioactive waste disposal repositories. This approach consists of planning, survey, and characterization and confirmation stages. But, the implementation of such an approach is associated with difficulties when it is applied manually. In the last decades, Geographic Information System (GIS) is commonly used in most fields of sciences. In this work, a Modified Method (MM) and GIS system have been used to locate the most suitable sites, for radioactive wastes borehole disposal facility. To facilitate the implementation of IAEA’ approach some modifications have been introduced. Here, in this MM the site survey stage is divided into three phases, each of them has its own criteria and GIS multi-criteria feature has been applied. This MM has been tested in locating optimum sites for borehole disposal facilities with certain criteria The MM is characterized by its easy use and save time

Ashwagandharishta is a famous Ayurveda medicine (in Asian countries) that is used to treat psychiatric conditions, dullness, memory related diseases, anxiety, schizophrenia sluggishness, epilepsy, depression and etc. Memory defects are closely allied with imperfect cholinergic neurotransmission. Repairing mechanisms for theses impaired processes afford promising treatment strategies for these kinds of disorders. Alpha-7 nicotinic acetylcholine receptor is a sub type of nicotinic acetylcholine receptor which has been recognized as one of the most useful drug target for the treatment of nervous system associated disorders. Molecular docking analyses have been carried out to detect any possible secondary metabolites present in Ashwagandharishta that could act as agonists of alpha-7 nicotinic acetylcholine receptor. According these computational findings, it has been found that two phytochemicals; anaferine and anahygrine exhibit promising agonistic activity towards the receptor. Thus anaferine and anahygrine have high possibility to serve as alpha-7nAChR agonists which demonstrate potential drug action towards memory related disorders.

Last some decades the increase the demand of electricity, now it is used mostly bulk power transmission system over long distances and it is interconnected to grid system. The generation of HVDC, the growth of power demand for consumption and utility. Now a day HVDC systemic good solution over HVAC system. My scope of this research on focused on use and development of HVDC and study the ac to dc and dc to ac converter this thesis the compression between HVDC and HVAC overhead transmission system and to study of network of HVDC system.

In this research HVDC system, mainly VSC-HVDC is used as interface to interconnected independent power provider system to grid system. There are some advantage due to fault accurse, it is independent of active power and reactive power. VSC-HVDC have advantages to protect integration of IPPs, interconnected to grid for stabilization. MATLAB/Simulink simulations for different grid connection for VSC-HVDC system. Due to IPPs technology model performs are studies due disturbance analysis of dynamic response with help of. MATLAB/Simulink simulations. So that the Simulation is satisfied condition and power quality improvement. And due to fault occur in VSC-HVDC system to prevent the propagation from grid to integrated IPPs units.

Log Files are the data files which include the log information like the name of the user, Date and access time, request type, transferred bytes from server and client, response status and accessed URL. These files are created and maintained by web servers as well as server tools like IIS, Apache and etc. It’s necessary to know the interest of web users to offer effective services. The main theme of analyzing web usages with the help of log file helps to understand the users future needs and maintain the content of the website based on the previous data. This paper discuss about the log files and its management. The paper also proposes a graphical representation of web usage results.

This paper shares initial findings on how data, modelling and evidence is used to inform decision making in the Cambridge city region, UK. It discusses fragmentation of governance across the vertical, horizontal and sectoral/systemic dimensions, as well as the impact of this fragmentation on data collection, access and evidence formation and its use along the decisionmaking process. The investigation is framed by how city digital twins, the latest evolution of urban analytics, could and should be designed and implemented in order to help overcome fragmentation of data and governance. The findings inform the development of a city digital twin prototype for the Cambridge region. Addressing issues related to the dispersion of powers, responsibilities and expertise across a multi-actor governance landscape is essential in improving the use of evidence in Cambridge, and must be considered as a priority for the design and implementation of the city digital twin prototype.