bluuebunny/crossref_metadata_2025 huggingface dataset:
Integrating Science Experimentation in Teaching Mathematics: A Lesson Study
Authors: G. Baybayon Gilbert , Beth E. Clemente Winnie , Catherine Eco Patricia , Rose P. Rosquita Mary , B. Zamora Christian , E. Elipane Levi
Published: April 2019

Integrated science and mathematics education provide meaningful learning to the students through different strategies such as the use of real-life activities in the classroom. This study focuses on how science experimentation can be integrated in mathematics through process integration approach. To determine how science integration in the teaching of mathematics lesson can be successful, the researchers conducted a lesson study that enables planning, observing, analyzing, and refining the ‘research lesson’ on integrating the two discipline. Themes on the implementation of the research lesson were identified and were given suggestions to come up with a more established lesson.
A Network Analysis of the Stock Market in Malaysia, Singapore and Indonesia
Authors: Nur Iqmal Ibrahim Siti , Aida Muhammad Siti , Hafizah Abdullah Mimi
Published: April 2019

In this study, we investigate the stock market network among the stocks traded in Malaysia, Singapore and Indonesia using the minimal spanning tree approach. Based on the market capitalization, the monthly adjusted closing prices from 2016 until 2017 of 10 companies for each stock market are chosen to construct the network, and the most influential stocks between Malaysia, Singapore and Indonesia stock markets are identified. Findings of this study show that 3 out of 30 companies are identified as the most influential in the Malaysia, Singapore and Indonesia stock market.
A Study on Misspecification and Predictive Accuracy of Stochastic Linear Regression Models
Authors: Narayana C. , Mahaboob B. , Venkateswarlu B. , Ravi sankar J. , Balasiddamuni P.
Published: April 2019

The present study research article proposes a modified test for misspecification of the stochastic linear regression model and a new test for predictive accuracy of stochastic linear regression model. In addition to this modified Lagrange Multiplier (LM) test for misspecification of stochastic linear regression has been developed. In the derivation of the test statistics internally studentized residuals have been used. William A. Branch et.al [1] presented a stochastic non-linear self-referential model in which expectations are based on linear perceptions. I.sh. Torgovitski et.al [2] in this paper discussed the problem of raising the efficiency of the regression coefficients estimation as suggested an approach which allows as to reduce mathematical expectations of the square of deviation of the response prediction.
A Note on Boolean Like Algebras
Authors: Pushpalatha K. , M.L.Hima Bindu V.
Published: April 2019

In this paper we develop on abstract system: viz Boolean-like algebra and prove that every Boolean  algebra is a Boolean-like algebra.  A necessary and sufficient condition for a Boolean-like algebra to be a Boolean algebra has been obtained.  As in the case of Boolean ring  and Boolean algebra, it is established that under suitable binary operations the Boolean-like ring and Boolean-like algebra are equivalent abstract structures.
Common Fixed Point Theorems in Bipolar Metric Spaces with Applications to Integral Equations
Authors: Srinuvasa Rao B. , N.V.Kishore G.
Published: April 2019

This paper establishes the existence of coincidence fixed-point and common fixed-point results for two mappings in a complete bipolar metric spaces. Some interesting consequences of our results is achieved. Finally, an illustration which presents the applicability of the results is achieved.
Entropy Generation on MHD Flow and Heat Transfer of Non-Newtonian Fluid Flow Over a Non-Linear Radially Stretching Sheet
Authors: Sreenadh S. , Ramesh Babu V. , Gopi Krishna G. , R.Mishra S. , N.S.Srinivas A.
Published: April 2019

An investigation is made for analyzing the behavior of MHD flow phenomena of a non-Newtonian fluid over a non-linear radially stretching sheet by using numerical technique. Magnetic field is considered in normal direction to the stretching sheet. With use of similarity transformations, the pdes are transformed into odes. The solution of theses odes are performed by using fourth order Runge - Kutta method along with shooting technique. The significance of different physical parameters characterizes the flow phenomena are analyzed with the use of graphs. The Jeffrey parameter  and magnetic parameter  has significant effect on velocity and temperature distribution over a non-linear stretching sheet. It is noticed that, the higher magnetic parameter results the increase in entropy generation number where the opposite nature is noticed in the case of Bejan number.
Mobile Application Design for Protecting the Data in Cloud Using Enhanced Technique of Encryption
Authors: Ali Pitchay Sakinah , Abdo Ali Alhiagem Wail , Ridzuan Farida , Perumal Sundresan
Published: April 2019

This paper provides an enhanced technique for improving the security and protecting the privacy of the cloud computing users by encrypting the data before it reached to server’s storage. Encrypting means the process of converting information or data into unreadable language to prevent unauthorized access. This paper will propose a mobile application design, which will allow the user to encrypt and decrypt the data hence maintaining security and privacy. In the proposed system design, the AES Algorithm will handle the encryption of the data using a keyword which will be defined by the user during the creation of the account. The encryption keyword will be hashed by the system using MD5 Algorithm. The keys will remain in encrypted form, while they are on the server side. Both encrypted data, encryption and decryption keys will be saved on the server in secured form. The idea behind hashing the encryption keys is to protect the keys while they are stored on the server, therefore, any unauthorized access to the server will gain no advantages since every bit of data on the server is encrypted including the private keys. The proposed system design will participate by improving the security and privacy of the users by giving them the capability to encrypt and decrypt data in enhanced way using AES as a data encryption method and MD5 hash algorithm for encrypting the encryption keys.
Assessment and Analysis of Locating Housing and its Impact on Development Patterns in Damghan
Authors: Arjmand Ahmad , Ali Khakpoor Barat
Published: April 2019

Understanding and management of urban street space capable of lighting it creates Urbanization process can be observed today in all countries this process, if it is considered natural and less worrisome, but if unplanned, the impaired and the ultimate goal is the welfare of citizens is not. Today, one of the problems of our cities and urban poor urban adverse effects that urban planning is a serious subjects. The aim of this study was to investigate locating housing and its effects on‏ the development directions of Damghan. The research method based on purpose and on the basis of a descriptive nature that is the case in this study, the analytical hierarchy process (AHP) and Microsoft Excel and SPSS statistical analysis is used to produce tables.
Analysis of Internal Risk Management in Indonesian Seaweed Farming
Authors: Thahir Harifuddin , Rombe Elimawaty , . Ponisri , Vesakha Gatha , Hadi Suryadi
Published: April 2019

This study aims to identify the internal risk management and acknowledge the highest and the lowest risk that have significant impact on seaweed farming in Indonesia. The case study is used in Morowali-the central seaweed farming in Indonesia. The data obtained from primary data and secondary data and used a census through interview and questionnaire. Data analysis apply analytic hierarchy process (AHP) to determine the weight of each criterion and sub criteria. The results show that the internal risks of seaweed operation by Indonesian farmers include the quality of seeds, technology, human resources, capital and cost management. The study found that the highest internal risk of seaweed operation on the farmers level is technology. This study provides insight and information to the seaweed farmers and manager of seaweed industry about the typical of internal risks in the farmers level.
Adaptive Phase-Shifted PWM based on Particle Swarm Optimization for Cascaded H-Bridge Inverter with Unequal Dc-link Voltages
Authors: Lare Pakedam , Nayak Byamakesh , Dash Srikanta , Ballav Sahu Jiban
Published: April 2019

The cascaded H-Bridge Multilevel Inverter has been found a promising technology in industrial applications because of its higher voltage with less distortion production. Various PWMs techniques have been proposed to push the harmonics frequencies higher than the switching frequency and thus reduces the THD as compared to non-carrier control technique based upon grid frequency. The Phase-Shifted PWM technique has an advantage over others PWM techniques because its harmonics orders are multiples of switching frequency and also depend on the number of levels of the inverter. The phase shifting angle is uniform when the equal voltage sources are adopted. However, in applications where sets of different voltage source levels feed the H-Bridge cells, the Phase Shifted PWM suffers its high order harmonics elimination capability. As a solution to alleviate this problem, an adaptive variable angle approach is proposed in this paper using Particle Swarm Optimization (PSO) algorithm to eliminate desired higher order harmonics. The algorithm is used to minimize the cost function based on high order sideband harmonics elimination equations. The results through MATLAB/Simulink environment shown in this paper confirm the reduction of sideband harmonics of higher orders, and the overall THD.
Design and Implementation of High Efficient Single Phase Transformer Less Inverter for Grid Connected Solar Photovol-taic Energy System
Authors: Babu Attuluri R.Vijay , Suresh K. , Krishna Pillutla Murali , Hussain Shaik Ashfaq
Published: April 2019

Solar energy is the most available energy among all the renewable energies, and the available range is almost 86000 TW. The global overall demand is 15TW, so only three hours production of electrical energy from solar is enough to compensate the power demand for a complete year.Clean and green environments are very much help for living things, non-renewable energy productions creates environmental pollution. Stand-alone system with renewable energy might be facing power failure and also effective utilizations also not possible. Excess power should be export to grid and whenever the power shortage which is compensates by import power from grid, and then only effective utilization is possible. This paper deals with the investigations on transformer less inverter topologies and control strategies for grid connected PV system. The proposed work has high efficient single phase transformer less inverter which is controlled by PIC 16F877. This arrangement has an advantage of reliability and high level of efficiency.
A Novel Approach of Renewable Energy Powered Hybrid Electrical Vehicle Using BLDC Motor
Authors: Rao Ch. UmaMaheshwar , Suresh K. , Reddy A. Naveen
Published: April 2019

Renewable energy based hybrid electrical vehicle (HEV) has been useful to make clean and green environment. Solar energy is available during day time which feed energy to run HEV and opposite wind energy also one of the input and it also useful to feed energy input to the vehicle. In the existing system of hybrid powered vehicles are not utilizing this energy properly due to some drawbacks related to blade stiffness, vehicle friction torque and efficiency. This proposed system overcome those difficulties and supply the power very conveniently. The noveltyof this paper is wind extraction; this system of approach is very helpful to convert the available opposite wind to the vehicle into useful energy. Wind outlet provisions are also available to reduce vehicle friction torque. The power sources such as solar, wind and fuel cell and the appliances of the car made sophisticated, which are controlled by a universal controller. The BLDC motor controlled by fuzzy PID concept of making the system is so reliable and control all the system operations effectively.
Simulation Technique of Kinematic Processes in the Vehicle Steering Linkage
Authors: Chernenko Sergii , Klimov Eduard , Chernish Andrii , Pavlenko Olexandr , Kukhar Volodymyr
Published: April 2019

The results of the investigation of the turning kinematics of the steerable wheels of the KrAZ-7634NE off-road vehicle with a wheel formula 8x8 and two front steer axles are given. The theoretical relations between the steer angles of the steerable wheels on the basis of the scheme of double-axle steering turning of the vehicle are shown. The mathematical model of flat four-bar vehicle steering linkage is developed, it determines the relation between the steering linkage left and right steering arms turning angles at any turning radius of the vehicle. KrAZ-7634HE steering three-dimensional model was created and simulation technique of its work was carried out using Creo software. It has been shown that the flat steering linkage model provides sufficient accuracy of calculations in analysis of turning kinematics. The design data can be used for any vehicles that have a similar steering linkage, they allow to analyze the impact of the vehicle design parameters on the turning kinematics and optimize them. Further study of the impact of the kingpin inclinations on the steering linkage kinematic and power characteristics are required.
Managing Dynamically Changing Traffic Flows
Authors: Karaeva M , Napkhonenko N , Perevozniuk V
Published: April 2019

The brief analysis of publications in the field of transport development, the organization and management of urban passenger traffic in the conditions of constantly changing passenger traffics is carried out. The efficiency of using logistic methods is proved by optimization of public passenger transport of the megalopolis. The factors influencing regularity of passenger traffics formation and their dynamic spatial distribution taking into account the main communications between passenger formed points and service providers are revealed. For improvement of traffic flows management the relevance of development of new mathematical models and methods considering relationship of cause and effect between the input and output parameters is established. Methods of solving large-size problems in the conditions of difficult criterion function are considered. Advantages and the prospects of meta-heuristic methods application – genetic algorithms – are shown at the solution of the transport tasks characteristic of unstable streams.For solving the objective using a set of genes is proposed which elements represent a chromosome with a certain set of decisions. Restrictions are formulated and operators of casual changes for a work of genetic algorithm are defined. The algorithm allowing to define and range the key input parameters influencing process of providing transport services and to receive parameters for the output correlation analysis is obtained.
Qualimetric Approach in Determining the Investment Attractiveness of a Ukrainian Railway Entity
Authors: V.Bormotova M. , D.Bronza S. , V.Mashoshyna T. , M.Troinikova O.
Published: April 2019

Investment is one of the critical tools to enable an economic recovery from the economic crisis and encourage the progressive development of any country. The main issue that prevents any industry from growing is shortage of funding. And that’s exactly why assessment of investment attractiveness of any project (country, industry, region, or company) is highly important. Based on the study of the existing views on the definition of the concept of investment attractiveness in literary sources, these views have been grouped by the main essential feature used for the definitions.The article presents an analysis of the investment attractiveness of Ukraine; articulates and systematizes the concept of investment attractiveness; suggests a definition of the concept in terms of qualimetry; examines the special aspects of investments in the transport industry (in particular, the railroad industry); and suggests a qualimetric model that enables the most adequate and essential assessment of the investment attractiveness of a railroad entity, based on the external and internal factors, and both qualitative and quantitative characteristics.
Road Traffic Accident in Malaysia: Trends, Selected Underlying, Determinants and Status Intervention
Authors: Khairul Amri Kamarudin Mohd , Abd Wahab Noorjima , Umar Roslan , Shakir Mohd Saudi Ahmad , Hafiz Md Saad Muhammad , Rozaireen Nik Rosdi1, Sarah Alisa Abdul Razak Nik , Murtadha Merzuki Muhamad , Salam Abdullah Abdul , Amirah Siti , Mohd Ridzuan Asyraff
Published: April 2019

This paper includes review of the trends, selected underlying, determinants and status intervention. The 1.17 million of deaths occur each year worldwide due to road accidents 70 % of which occur in developing countries in the world. 65% of deaths involve pedestrian’s causes, 35 % of which are children. Estimates suggest that 23–34 million people are injured worldwide every year in road crashes. Fatal accidents are among the major factors of death in the world apart from chronic diseases such as stroke, lung infections, respiratory difficulties and heart disease. The rise in fatal accidents in Malaysia is 70%. This study was conducted to study the rate of fatal accidents on roads in the state of Selangor and Perlis based on fatal accident data for a period of five years from 2013 to 2017. The data were analyzed using quantitative methods which took into account the research conducted by researchers last. Based on analyzed data, the state of Selangor recorded the highest accident rate while Perlis state recorded the lowest accident rate. Among other things being studied are factors affecting the rate of road accidents in both states. In conclusion, the traffic, the physical structure of the road and the road users' focus is a factor of road accidents more concentrated in a particular area.
The Relationship Between Oil and Natural Gas Prices on the Malaysian Economic Sectors
Authors: Surayya Mohd Saudi Nur , Hock Tsen Wong , Latif Harun Abdul , Zainal Ariffin Zailin , Zahidah Syafii Nur , Shakir Mohd Saudi Ahmad , Khairul Amri Kamarudin Mohd , Hafiz Md Saad Muhammad , . .
Published: April 2019

This study has investigated the relationship between the changes in oil and natural gas prices on the Malaysian economic sectors. Four economic sectors were selected namely manufacturing, services, agriculture, and mining. However, there was less study conducted at the sector level. Hence, the goal of this paper is to explore the impact of oil and gas prices on economic sectors GDP. This study has conducted econometrics modelling based on the ARDL bound testing with the spanning time series data from year 1987 to 2017. The empirical findings revealed that the relationship between the oil and natural gas prices in the manufacturing and services sector is negative, while the agriculture sector showed a positive relationship, and the mining sector showed no relationship. The empirical findings concluded that the manufacturing and services sectors that consumed more energy are dependent on the price changes. Meanwhile, the agriculture sector is a highly subsidised sector which has a positive relationship with energy prices. In the policy recommendation, Malaysia has to apply the energy pricing policy by offering energy subsidy to the high energy consumed sectors. Finally, Malaysia should develop policies that can diversify its energy resources and increase the shares of renewable energy sources.
Population Growth and Economic Development in Developing and Developed Countries
Authors: Khairul Amri Kamarudin Mohd , Abd Wahab Noorjima , Mohamad Mahadzirah , Shakir Mohd Saudi Ahmad , Shaharudin Samsurijan Mohamad , Hafiz Md. Saad Muhammad , Nuratiqah Yusri Siti , Aula Ahmad Sazali Nurwahidatul , Fadhlina Afiqah Abdul Latif Nur , Norsyafawati Siti , Rahim Abdul , Najiha Syuhada Samsuring Nurul , . .
Published: April 2019

This research examines the effects of population growth on the economic development between the two developed and developing countries which is Singapore and Malaysia. They were many previous studies that have sought to gauge the effects or impact of population growth along the economic development. It was said that there was a strong relationship between the effects of population growth and the economic development, which is the growth of population is depending on the economic growth. Singapore was well known worldwide as a highly developed free-market economy. The economy of Singapore has been ranked as the most open in the world and the most-pro business. The population in the country is estimated at 5.5 million recently. As for Malaysia, it is known as the most competitive developing countries and is ranked on the 5th largest in South Asia. The population estimated at 31.63 million in Malaysia.
Shaping Tourist Destinations Through Language and Visual Elements on Tourism Websites: A Tourism Discourse Perspective
Authors: Arfin Muhammad Salim Muhammad , Puad Mat Som Ahmad
Published: April 2019

Official tourism website has become an essential aspect in shaping tourist destinations. Tourism websites are an essential tool in shaping the norms and values of the destinations which travelers have to visit — however, only very few research which focused on the integration of the language element and visual element in shaping tourist destination images. Thus, this study aims to investigate how effective is the use of language and visual elements in shaping the tourist destination on the tourism websites of Sulawesi Selatan, Indonesia. This research employed a discourse approach to analyze both language and visual elements. Data was collected via online documentation and semi-structured interview and analyzed using both textual and visual analysis. The use of lexical and syntactical aspects in the official tourism websites in Sulawesi Selatan, Indonesia are the focus of textual analysis. Furthermore, visual elements such as modality and salience are also looked over. The findings reveal that both, textual and visual elements, complement each other as tourism discourse resources, in realizing Indonesia’s tourism destinations as attractions on official tourism websites (OTWs).
Validity of Module Geographic Information System-Spatial Thinking Skills (GIS-STS)
Authors: Mayalagu Ganesan , Jaafar Mokhtar , Kuok Choy Lam
Published: April 2019

Technological advancement in the realm of education is the process of transitioning from traditional Learning and Facilitation (L&F) to the 21st Century L&F. Geographic Information System (GIS) integration in Geography subjects is crucial in Malaysia to uphold and revive Geography subjects. Ergo, the Geographic Information System-Spatial Thinking Skills Module (GIS-STS) was developed as an intervention intended in improving the Spatial Thinking Skills (STS) and attracting students to Geography subjects. This study aims to analyze the validity of the content of the GIS-STS module. The content validity analysis utilizes the consensus assessment of seven experts. The findings exhibit that the value of the coefficient of the validity of the content is .930 and based on the sub module and the activity is .870. Hence, this proves that the GIS-STS module has a high content validity and is therefore suitable for implementation in secondary schools for Geography Form two students.
A Systematic Review of Individuals’ Acceptance of IOT-based Technologies
Authors: Alkawsi Gamal Abdulnaser , Bte. Ali Nor’ashikin
Published: April 2019

This paper primarily aims to provide a systematic review of factors influencing the individuals’ acceptance of Internet of things (IoT). There are numerous studies in literature that examine factors affecting technology acceptance.  However, the studies on the review for acceptance of Internet of Things is limited.   This study conducted a review and analysis of 32 articles from academic journals and conference proceedings published about the adoption, acceptance and diffusion of IoT. According to the review outcome, there are increasing numbers of studies that have been conducted in the IoT acceptance among individuals hailing from various points of view, with different factors affecting such viewpoints. Nevertheless, it was also noted that a theoretical, methodological and empirical study has yet to be carried out in the field to determine the factors related to the context of its application. The findings also led the author to recommend more future theoretical, methodological and empirical research to be conducted on the topic.
Dynamic Reliability Analysis of Corroded Pipeline Using Bayesian Network
Authors: Sulaiman Nurul Sa’aadah , Tan Henry
Published: April 2019

Maintenance and integrity management of hydrocarbons pipelines face the challenges from uncertainties in the data available. This paper demonstrates a way for pipeline remaining service life prediction that integrates structural reliability analysis, accumulated corrosion knowledge, and inspection data on a sound mathematical foundation. Pipeline defects depth grows with time according to an empirical corrosion power law, and this is checked for leakage and rupture probability. The pipeline operating pressure is checked with the degraded failure pressure given by ASME B31G code for rupture likelihood. As corrosion process evolves with time, Dynamic Bayesian Network (DBN) is employed to model the stochastic corrosion deterioration process. From the results obtained, the proposed DBN model for pipeline reliability is advanced compared with other traditional structural reliability method whereby the updating ability brings in more accurate prediction results of structural reliability. The comparisons show that the DBN model can achieve a realistic result similar to the conventional method, Monte Carlo Simulation with very minor discrepancy.
Heavy Metal Accumulation at the Bertam Agricultural Watershed in Cameron Highlands, Malaysia
Authors: S.H Haron , S Ismail , L.M Sidek
Published: April 2019

The existence of heavy metals residues in water, soil and air poses a serious risk to all living organisms. Heavy metals, such as Cd, Pb, Cr, Ni, and Hg, are major sources of environmental pollution, especially in areas with high anthropogenic and agriculture activities. The objective of this study is to determine the status of heavy metal concentrations of Cd, Cr, Ni, Pb, Zn, Cu, and Fe in the water bodies of Bertam River, which passes through agricultural areas. The water samples were collected randomly in three replicates from 10 sampling points along the Bertam River. The heavy metals in the water were extracted by using filter paper with a pore size of 0.45 mm. The extracted water sample was preserved by adding nitric acid (pH <2). Sample concentrations were then tested for metal concentrations using inductively coupled plasma mass spectrometry. In this study, the highest mean concentration was Fe (96.04 ± 90.43 ppb), followed by Zn (5.68 ± 0.2.34 ppb), Cu (5.13 ± 2.98 ppb), Cr (1.53 ± 0.19 ppb), Ni (0.85 ± 0.22 ppb), Pb (0.85 ± 1.61 ppb), and Cd (0.027 ± 0.02 ppb), where Fe> Zn> Cu> Pb> Cr> Ni> Cd. However, the concentrations of selected heavy metals in the water samples were below the standards recommended by the World Health Organization.
Determine Environmental Structure Condition of River Sub System of Palembang City’s Rivers using Geospatial Analysis
Authors: Usman Fathoni , Hamim Sumi Amariena
Published: April 2019

This paper present geospatial analysis to determine the environmental structure of the river sub-system of Palembang City where 70% of the city is located at lowland with elevation from 0 to 5 m above mean sea level. This lowland terrain condition induced problem of water puddle and flood during a rainfall event. A landscape ecological approach and spatial analysis approach of river sub system (RSS) morphometry characteristic were conducted to determine the environmental structure condition of the RSS. The data used to generate the DEM was the height data obtained from the map of the city line on a scale of 1:1000 with stereophotogrammetric digital technique. The line map contains spot height data made every 20 m distance in the field. From this study, new delineation of RSS boundaries was produced and gave different catchment areas. It is found that the perimeter of the RSS and the mean value of bifurcation ratio determined the value of runoff in the RSS.
Transformational Leadership and its Impact on Creative Behavior: A Study of the Opinion of a Sample of Decision Makers in the General Traffic Directorate
Authors: Kraidi Bunyan Alkabi Makkiyah , Tarik Ahmed Salih Al-Qaisi Dunya
Published: April 2019

The purpose of this research is to determine the effect of transformational leadership in the creative behavior of decision makers in the Directorate of Public Traffic. The research problem was formulated in several questions focused on the statement of impact among its variables. The research was based on a main hypothesis, which was subjected to several tests to ascertain its validity. In order to achieve the objectives of the research, a questionnaire was developed which included (30) items to collect the data from the intentional sample of the research, with a total of (70) questionnaires, and the number of questionnaires valid for the analysis (67) of the total distributed questionnaires. The statistical program (SPSS) was used to analyze the data. The results are the most important: to drive the transformational leadership (ideal influence, inspirational motivation, intellectual arousal, individual legalism), which together have a significant effect on the creative behavior of the research sample members, and thus increase the attention to the positive strengths that form the transformational leadership contributes to the support and development of creative behavior of the organization, in question, to keep pace with progress in their field.
Analysis of Transient Stability in Synchronous Generator Using Nyquist Method
Authors: Noor Hidayat Mohammad , Izza Syarifatul , Ika Putri Ratna
Published: April 2019

There are two factors that must be considered for the power quality analysis of an electrical power system, i.e. frequency and voltage stability. The system that can return to the initial condition or the steady state after a disturbance occurred indicates that the system is stable. This paper aims to detect the transient stability of three generators, which have identical specification of 2.25 MW 6.6 kV and are operated in parallel, based on the frequency performance. In this paper, the stability analysis is determined by using the nyquist method, where the system stability is indicated by the value of the response curve of the system. The analysis results show that the system of three paralleled generators have the value that far from 1 + j0 and the phase margin value and gain margin tend to be minimum. These values indicate that the system is unstable. The system slowly changes into more unstable because the oscillations are getting bigger until the final state. So, it is necessary to change the parameters of each generator that can affect the system stability during synchronization state.
Design of SCADA based solar power plant for clean water irrigation system in remote areas
Authors: Mu’ammar Rais , Nugroho Prapto , Multa Putranto Lesnanto
Published: April 2019

The study aimed to design a supervisory control and data acquisition (SCADA) system to control solar power plants for clean water irrigation system during the dry season in remote areas. The SCADA system contrived is expected to be able to meet the main elements of the SCADA architecture. Accordingly, following steps were conducted, starting from designing the human machine interface (HMI) in the master station (MS), mapping out the microcontroller as a remote terminal unit (RTU) and designing the communication path between MS and RTU. Furthermore, the SCADA system was tested by the system test to evaluate the SCADA system that was designed meet minimum standard and running well. After tested, the result showed that the system is successfully designed to meet the main elements of SCADA architecture. The system is also able to monitor and control remotely, resulting in more efficient control of user work as well as rapid decision making in order to minimize damage potential when an interruption occurs. For both control and monitor, the MS and RTU in the SCADA system wirelessly communicate.
Comparative Analysis Of Applications OSforensics, GetDataBack, Genius and Diskdigger On Digital Data Recovery in the Computer Device
Authors: Hidayat Arif , . Sudarmaji , . Dharmawan , Irawan Dedi , Joko Susanto Lilik , . Mustika , Pranoto Hadi
Published: April 2019

In the use of computer devices that are done in recent use for data processing in the form of text, images or video that can be done easily and quickly. But in reality, there are events where the work, in the form of computer files, can be lost so that the required files are missing from the storage media in the computer. In this research will be discussed and presented a comparative analysis of four software for recovery of data that has been deleted. The applications used are OSforensics, GetDataBack, Disk Genius and Diskdigger. The capabilities of such applications in the recovery of deleted data have been tested and analyzed in flash drives. Based on the tests that have been done indicates that the fourth this application can work well in terms of finding deleted data. In addition, this application is also able to recover data or retrieve the already deleted.
REKONSTRUKSI PROGRAM PERLINDUNGAN DASAR MELALUI PROGRAM PERTANGGUNGAN WAJIB KECELAKAAN PENUMPANG DAN LALU LINTAS
Authors: Hapsari Mertha , Suteki Suteki
Published: April 2019

Pemerintah memberikan perlindungan dasar bagi korban kecelakaan lalu lintas melalui Undang-Undang Nomor 33 Tahun 1964 tentang Dana Pertanggungan Wajib Kecelakaan Penumpang jo Peraturan Pemerintah Nomor 17 Tahun 1965 dan Undang-Undang Nomor 34 Tahun 1964 tentang Dana Pertanggungan Wajib Kecelakaan Lalu Lintas Jalan jo Peraturan Pemerintah Nomor 18 Tahun 1965. Kedua Undang-Undang tersebut dibentuk sebagai langkah awal pemberian jaminan sosial kepada masyarakat pengguna lalu lintas. Namun perlindungan yang diberikan bersifat third party liability atau tanggung jawab hukum pihak ketiga, sehingga tidak semua warga Negara yang berada di jalan dan mengalami kecelakaan lalu lintas terjamin menurut Undang-Undang. Permasalahan yang dibahas dalam tesis ini mengenai kedudukan Dana Pertanggungan Wajib Kecelakaan Penumpang dan Dana Pertanggungan Wajib Kecelakaan Lalu Lintas Jalan dalam sistem jaminan sosial dan bagaimana Undang-Undang ini memberikan perlindungan baik yang sudah diatur maupun belum diatur kepada korban kecelakaan lalu lintas dengan berbasis nilai keadilan. Dalam penelitian ini menggunakan metode pendekatan Socio-legal dengan spesifikasi penelitian deskriptif analitis, penulis berusaha menjelaskan mengenai kedudukan dana pertanggungan wajib kecelakaan penumpang dan lalu lintas dalam sistem jaminan sosial nasional dan menemukan konstruksi ideal perlindungan dasar bagi korban kecelakaan lalu lintas. Hasil penelitian menunjukkan bahwa tujuan awal dibentuknya Undang-Undang untuk melindungi seluruh masyarakat Indonesia belum terpenuhi, sehingga diperlukan rekonstruksi agar perlindungan dasar kepada korban kecelakaan lalu lintas dapat dilaksanakan berdasar nilai keadilan sosial.Kata kunci : Perlindungan Dasar; Kecelakaan Lalu Lintas; Rekonstruksi.
Deteksi Fenotipik Escherichia coli Penghasil Extended Spectrum Beta-lactamases (ESBLs) pada Sampel Makanan di Krian Sidoarjo
Authors: Prasetya Yulianto Ade , Winarsih Ike Yuyun , Pratiwi Kharisma Aprilia , Hartono Merinsa Chorry , Rochimah Dita Nur
Published: April 2019

Escherichia coli is a group of Enterobacteriaceae bacteria that often contaminate food so that it can cause diarrhea. These bacteria are very difficult to treat if they are able to produce the Extended-Spectrum Beta-Lactamases (ESBLs) enzyme. The purpose of this study was to identify ESBLs-producing E. coli in food samples in Krian Sidoarjo. Food samples (fried foods, cilok tempura and chili sauce) were collected from ten different places. The sample was then grown on Eosin Methylene Blue (EMB) medium and purified by the 16 streak method, as well as biochemical character tests. The ESBLs phenotypic E. coli method was carried out by screening test and confirmation test using a Double Disk Synergy Test (DDST). Thirty colonies were able to grow on EMB media, but after microscopic identification and biochemistry testing only four samples were E. coli positive and were able to produce ESBLs from the phenotypic test that had been carried out. ESBLs-producing E. coli testing is important not only for nosocomial infections but also for the community so it needs attention to the spread of ESBLs resistance among microorganism species.

 

Escherichia coli termasuk kelompok bakteri Enterobacteriaceae yang sering mengkontaminasi makanan sehingga dapat menyebabkan diare. Bakteri ini sangat sulit diobati apabila mampu memproduksi enzim Extended Spectrum Beta-Lactamases (ESBLs). Tujuan penelitian ini adalah untuk mengindetifikasi E. coli penghasil ESBLs pada sampel makanan di Krian Sidoarjo. Sampel makanan (gorengan, cilok, tempura, dan saus sambal) dikumpulkan dari sepuluh tempat berbeda. Sampel kemudian ditumbuhkan pada medium Eosin Metilen Blue (EMB) dan dimurnikan dengan metode streak 16, serta dilakukan karakteristik uji biokimia. Metode fenotipik E. coli penghasil ESBLs dilakukan dengan uji skrining dan uji konfirmasi menggunakan double disk synergy test (DDST). Sebanyak tiga puluh koloni mampu tumbuh pada media EMB, namun setelah diidentifikasi mikroskopis dan uji biokiomia hanya empat sampel positif E. coli dan mampu menghasilkan ESBLs dari uji fenotipik yang telah dilakukan. Pengujian E. coli penghasil ESBLs penting dilakukan bukan hanya pada infeksi nosokomial, tetapi juga pada komunitas sehingga perlu mendapat perhatian terhadap penyebaran resistensi ESBLs diantara spesies mikroorganisme.
Pericytes in the infarcted heart
Authors: Alex Linda , Frangogiannis Nikolaos G
Published: April 2019

The adult mammalian heart lacks regenerative capacity and heals through activation of an inflammatory cascade that leads to the formation of a collagen-based scar. Although scar formation is important to preserve the structural integrity of the ventricle, unrestrained inflammation and excessive fibrosis have been implicated in the pathogenesis of adverse post-infarction remodeling and heart failure. Interstitial cells play a crucial role in the regulation of cardiac repair. Although recent studies have explored the role of fibroblasts and immune cells, the cardiac pericytes have been largely ignored by investigators interested in myocardial biology. This review manuscript discusses the role of pericytes in the regulation of inflammation, fibrosis and angiogenesis following myocardial infarction. During the inflammatory phase of infarct healing, pericytes may regulate microvascular permeability and may play an important role in leukocyte trafficking. Moreover, pericyte activation through Toll-like receptor-mediated pathways may stimulate cytokine and chemokine synthesis. During the proliferative phase, pericytes may be involved in angiogenesis and fibrosis. To what extent pericyte to fibroblast conversion and pericyte-mediated growth factor synthesis contribute to the myocardial fibrotic response remains unknown. During the maturation phase of infarct healing, coating of infarct neovessels with pericytes plays an important role in scar stabilization. Implementation of therapeutic approaches targeting pericytes in the infarcted and remodeling heart remains challenging, due to the lack of systematic characterization of myocardial pericytes, their phenotypic heterogeneity and the limited knowledge on their functional role.
Effects of selected therapeutic aerobic exercise on remedial case of premenstrual syndrome in case of Arba Minch University
Authors: Abebe K. , Deyuo M. , Aychiluhim W.
Published: April 2019

Purpose: The purpose of this study was to assess the effect of selected therapeutic 12 weeks regular aerobic exercise on remedial case of premenstrual syndrome students. Materials: A quasi-experimental study was used on a randomly selected 30 female students aged 18 to 30 years who meet the eligibility criteria at Arba Minch University. Participants were divided in to two groups: experimental group (n=15) and control group (n=15) for comparison purpose. The therapeutic aerobic exercise duration was 40-60 minutes and carried out for 12 weeks with three sessions per week. In this study the premenstrual symptoms questionnaire consists of 8 domains of used. The domains were pain, concentration, behavioral change, autonomic reactions, water retention, negative effect, arousal and control. A paired t-test statistical method was used for data analysis. SPSS version 20 was used for data management and analysis. Result: The study found mean scores of negative reaction decreased after 12 weeks with a frequency of 3 per week therapeutic aerobic training in the experimental group but not in the control. Further, a statistically significant change was observed for all measured variables for experimental group. However, there was no a statistically significant change for the controls. The selected therapeutic aerobic exercise training program on treating premenstrual syndrome had a significance effects on experimental group and students who practiced for twelve weeks with a repetition of three times per week. Conclusion: Twelve weeks of regular therapeutic aerobic exercise with three sessions per a week with intensity of 40 to 60 minutes reduces the severity of feeling premenstrual syndrome symptoms (PMS).
Empirical verification of self-rated positive health (somatic dimension) in women with professional competence in the field of health education
Authors: Dobosz D.
Published: April 2019

Purpose: to address a question whether reports of young women concerning their positive health are concordant with indices based on recommended methods of measuring health? Material: the study consist of fifteen, 23 years old female students of physiotherapy (height: QUOTE 15X"> =164.3 ±4.55; weight: QUOTE 15X"> = 60.7 ±6.76) who declared engagement in everyday or occasional physical activity. They completed The profile of the sense of positive health and survival abilities indices (SPHSA questionnaire). It includes 23 indices: 8 of somatic health (A), 4 of mental health (B), 3 of social health (C) and 8 of survival ability (D). The sense of intensity of particular indices (aspects A, B, C) is evaluated in the 1 to 5 scale where: 1 very low, 2 low, 3 average, 4 high, 5 very high. Additional index “0” (added to this five-point rating scale) is reserved to aspect D. Besides, SPHSA comprise 8 questions relating to subject’s earlier experiences associated with: safe falling, self-defence, martial arts, life-saving skills in the water, first aid, survival, uniformed services and scouting. Results: there is statistically significant correlation (r = 0.57; p<0.05) between reported and diagnosed average value of general index of somatic health of young women. Reported and diagnosed values of general index of somatic health are concordant in 5 women (33% of study group). The remaining 10 women either overestimate (n = 7) or underestimate (n = 3) their somatic health. Regardless of declared physical activity women significantly overestimated their diastolic blood pressure and underestimate their anaerobic capacity and flexibility: p<0.05 or p<0.01 (these misestimations, concerns indices having extreme values, both highest and lowest). Tendency is more evident in case of everyday active women. Conclusions: results of the experiment allow recommendation SPHSA as a useful tool to measure people’s sense of somatic health. Concurrently person’s self-evaluations can be easily verified because they concern such characteristics of the body which can be measured by quasi-objective methods (criterion validity).
Acute effects of isoinertial resistance application on sprint, vertical and horizontal jump performance
Authors: Kale M. , Özmusul A. , Heper E.
Published: April 2019

Purpose: The purpose of this study was to investigate of the acute effects of isoinertial resistance application on sprint, vertical and horizontal jump performance. Material: Volunteered 32 male students were divided into randomized experimental group and control group. Before and after 4-repetition maximal back squat with (for experimental group) or without isoinertial resistance application (for control group), 30 m sprint, vertical squat and countermovement jump tests with both legs, dominant leg, and non-dominant leg, standing broad jump and standing broad countermovement jump tests with both legs were assessed. Wilcoxon t test for pre- and post-test differences within the group, and Mann Whitney U test for pre- and post-test differences between the groups were used. Results: There were no significant differences within the group and between the groups for 30m both legs sprint parameters except pre-test mean stride length between the groups (Z=-2.27; p<0.02). Control group had a significant difference between pre- and post-test dominant leg vertical force (Z=-2.07; p<0.05). There were significant group differences in pre-test non-dominant leg countermovement jump (Z=-2.13; p<0.05), pre- and post-test non-dominant leg stride length (Z=-1.99 and Z=-2.28; p˂0.05, respectively). Conclusions: As a result of the effect of acute isoinertial resistance application to stride length especially to non-dominant stride length it is concluded that long-term isoinertial resistance training can support sprint performance with tolerating stride length imbalance between dominant leg and non-dominant leg.
Comparative study of anthropometric measurement and body composition between junior handball and basketball players from the Serbian national league
Authors: Masanovic B.D. , Bavcevic T.T. , Prskalo I.A.
Published: April 2019

Background and Study Aim: The purpose of this study was to describe anthropometric characteristics and body composition of junior handball and basketball players from the Serbian National League, as well as to make a comparison between them. Material and Methods: Sixty male athletes were enrolled in the study and they were divided into three groups: fifteen handball players, thirteen basketball players and thirty-two healthy sedentary subjects. All subjects were assessed for the anthropometric measures required for calculation of body composition variables, using standardized procedures recommended by previous studies. Data were analyzed using SPSS software and descriptive statistics was expressed as a mean (SD) for each variable, while the ANOVA and LSD Post Hoc tests were carried out to detect the effects of each type of sport. Results: The results showed there was no significant difference in body weight, body mass index or in bone content, while a significant difference was found in body height as well as in muscle mass and body fat. Conclusions: These findings may give coaches from the region better working knowledge, and suggest to them to follow recent methods of selection techniques and to be more careful during the process of talent identification.