Genetic Algorithm-based Mapper to Support Multiple Concurrent Users on Wireless Testbeds

Communication and networking research introduces new protocols and standards with an increasing number of researchers relying on real experiments rather than simulations to evaluate the performance of their new protocols. A number of testbeds are currently available for this purpose and a growing number of users are requesting access to those testbeds. This motivates the need for better utilization of the testbeds by allowing concurrent experimentations. In this work, we introduce a novel mapping algorithm that aims to maximize wireless testbed utilization using frequency slicing of the spectrum resources. The mapper employs genetic algorithm to find the best combination of requests that can be served concurrently, after getting all possible mappings of each request via an induced sub-graph isomorphism stage. The proposed mapper is tested on grid testbeds and randomly generated topologies. The solution of our mapper is compared to the optimal one, obtained through a brute-force search, and was able to serve the same number of requests in 82.96% of testing scenarios. Furthermore, we show the effect of the careful design of testbed topology on enhancing the testbed utilization by applying our mapper on a carefully positioned 8-nodes testbed. In addition, our proposed approach for testbed slicing and requests mapping has shown an improved performance in terms of total served requests, about five folds, compared to the simple allocation policy with no slicing.Comment: IEEE Wireless Communications and Networking Conference (WCNC) 201

Evaluasi Kebijakan Pemerintah dalam Menjaga Stabilitas Pertumbuhan Ekonomi Tahun 2013

This study aimed to evaluate government policies through several fiscal and monetary stimulus in stabilizing economic growth through interest rate policy, the money supply and inflation in Indonesia during 2013. The variables used were the BI rate, the money supply (M2), and inflation. This study using Pearson correlation analysis to measure the relationship between these three variables. The results of this study indicate that the BI rate has a significant positive correlation to the amount of money supply (M2). BI rate has no significant negative correlation to inflation. While the money supply has no significant positive correlation to inflation (M2). These anomalies can be caused by fluctuation of currency exchange rates on foreign currency Indonesia, balance of payments, current account deficit, or the amount of government debt that is maturing. For the case of Indonesia, the policy to control inflation through interest rate increases become ineffective if some basic assumptions both Keynesian and Monetarist not met.DOI: 10.15408/sjie.v3i1.206

Mengembangkan Human Resource Management yang Strategis untuk Menunjang Daya Saing Organisasi: Perspektif Manajemen Kinerja (Performance Management) di Bank Syariah

This article discusses performance management in sharia banks related to human resources. The method used is descriptive in providing a comprehensive explanation based on factual data. Performance management in sharia banks should be applied based on the characteristics of human resources by sharia. The characteristics of the human resources required by sharia banks are different from conventional banks. Human resources in sharia banks should have different performance indicators to conventional banks. Performance indicators serve as a guide in the process of implementing sustainability performance as an effort of sharia banking in the banking industry in Indonesia

Scientists and technologists in the specification of the production function

Scientific and technological effort as measured by the main resources of scientists and technologists is regarded as an essential factor in technological efficiency. Their contribution to industrial production may be specified as three separate functions: research and development, on- the -shop -floor and scientific management. There is an obvious difference in the nature of activity as well as in the length of time during which each type of scientific effort is likely to pay off. It seems thus necessary to distinguish between scientific efforts directed at current productive activities and those devoted to investment in future technology.From statistical point of view errors of omission in the specification of the production function are likely to result from ignoring the introduction of essential factors such as scientific effort as an explicit factor of production. Ignoring the correction for an incomplete adjustment of the studied units to the prevailing phrase of the trade cycle is treated as an omission error on the grounds that the technical efficiency of all factors rather than the performance of capital alone is the one most likely to be affected by variations in the level of activity. Moreover, errors of specification in the measurement of the input factors result from ignoring the heterogeneity of capital and labour. These errors of specification are likely to impart serious statistical bias in the estimated technological efficiency and in the estimated coefficients of the production function. Furthermore, they are likely to lead to unsound policy recommendations (see Chapter V).The attempt made in order to avoid these sources of specification errors singularly and simultaneously provided, on the whole, consistent and statistically significant results despite data limitations. An appreciable part of the third factor of production or technical efficiency as estimated by the traditionally specified production function is explained when an account is taken of the vintage of capital, the structure of capital -viand the structure of labour, (Chapters VI, VII and IX). The results of correcting for the degree of capacity utilization and of the explicit introduction of: current, lagged and disaggregated scientific effort seem to be consistent with the desirable property of reducing the bias that is likely to result from errors of omission in the specification of the production function. (see Chapters VIII, X, and XI).The model is applied to a cross -section of inter -industry in 1962, mainly on British and partly on Scottish manufacturing industries.In order to carry out the present investigation a laborious attempt has been made to implement existing British data on 23 manufacturing industries. Net output has been interpolated between the years 1959 - 1962 inclusive. The Cambridge estimates of the Stock of all Fixed Assets, Plant and Machinery and other structures were further disaggregated. Modern and old layers of the vintage of: All Fixed Assets, Plant and Machinery and other structures were estimated. for 1962. For Scottish manufacturing industries an estimation has been carried out for Gross Output, Net Output, Stock of All Fixed Assets, Plant and Machinery, and other structures of capital for 23 industries in 1962, (see Chapter IV)

IMPROVING POWER SYSTEM PERFORMANCE USING DEMAND-SIDE MANAGEMENT WITHIN SMART GRIDS ENVIRONMENT

This paper introduces a method to improve the performance of power systems using demand side management to overcome the problems of increasing load demand. Defining suitable demand reduction levels can cause a significant enhancement for the entire network. Therefore, the sensitivity factors related to each load centre are defined to rank the load centres according to their priority. According to these factors, the best required load reduction can be obtained at each load centre. The recommended reduction level has to ensure overcoming the problems associated with the voltage profile and transmission lines overloading due to the increase in load demand. The IEEE 30 bus system is used to highlight the demand-side management strategy under different loading conditions. Some simulation results are introduced to show the importance of considering the sensitivity of load centres when defining the reduction levels at each load centre. The recommended demand side management is compared with the load shedding technique as an emergency action to avoid the problems of line violation and to keep the system stable and secure. According to the obtained results, considerable improvement is achieved in the voltage profile, the network efficiency and power loss without the need for the load shedding. These results encourage the implementation of the introduced technique considering sensitivity of load centres in smart grid environmen

Role of tumour necrosis factor gene polymorphisms (-308 and -238) in breast cancer susceptibility and severity

Introduction Genetic polymorphisms in the promoter region of the tumour necrosis factor (TNF) gene can regulate gene expression and have been associated with inflammatory and malignant conditions. We have investigated two polymorphisms in the promoter of the TNF gene (-308 G>A and -238 G>A) for their role in breast cancer susceptibility and severity by means of an allelic association study. Methods Using a case–control study design, breast cancer patients (n = 709) and appropriate age-matched and sex-matched controls obtained from the Breast Screening Unit (n = 498) were genotyped for these TNF polymorphisms, using a high-throughput allelic discrimination method. Results Allele frequencies for both polymorphisms were similar in both breast cancer cases and controls. However, the -308 polymorphism was found to be associated with vascular invasion in breast tumours (P = 0.024). Comparison with other standard prognostic indices did not show any association for either genotype. Conclusions We demonstrated no association between the -308G>A polymorphism and the -238G>A polymorphism in the promoter region of TNF and susceptibility to breast cancer, in a large North European population. However, the -308 G>A polymorphism was found to be associated with the presence of vascular invasion in breast tumours

Hubungan Pola Makan dengan Indeks Massa Tubuh pada Santri/Santriwati

Background: Nutrition problem is a global health problem that requires special attention. In Indonesia, the problem of nutrition has not been completely resolved. Nutritional problems are related to a person's diet. This study aims to determine the relationship between diet and body mass index of students at the At-Taufiqurrahman Islamic Boarding School. Methods: This type of research is quantitative analytic with a cross sectional research design. The population is 61 people, the sample of this study is 61 people. The sampling technique is total sampling. Instruments in this study are questionnaires or questionnaires, weight scales and microtoise. Analysis of the data used is descriptive analysis and Spearmen Test. Results: The results showed that there was a significant relationship between diet (amount of energy (p = 0.001), amount (protein p = 0.001), type of food (p = 0.015) and the body mass index of students at Pondok Pesantren At Taufuqurrahman. Conclusion: There is a relationship between diet and body mass index of students at the At-Taufiqurrahman Islamic Boarding School. It is hoped that the pesantren will pay more attention to the food menu consumed by students

Pengaruh Ratifikasi Protokol Kyoto terhadap Kerjasama Ekonomi Jepang-Indonesia

This research describes about the effect of Kyoto Protocol Ratification toward economy partnership agreement Japan-Indonesia. Economy partnership agreements between Japan and Indonesia have a significant progress not only in trading but also investment.The research method applies qualitative descriptive method, liberalism perspective and Foreign Direct Investment theory. The author collected data from books, encyclopedia, journal, mass media and website to analyze the effect of Kyoto Protocol Ratification toward economy partnership agreement Japan-Indonesia.The conclusion of this research is Japan-Indonesia Partnership Agreements increasing number of environmentally friendly investment in Indonesia through JCM project. Through this JCM project, Japan and Indonesia could to enforce the purpose of Kyoto Protocol. So that, the economy agreement Japan-Indonesia aside from to grant advantages for both of this Country, but also grant the good effect for the environment.Key words: Kyoto Protocol, Investment, Trade, Economy partnership agreement , environmentally friendly, JCM Project

IMPACT OF LARGE PENETRATION OF WIND ENERGY ON THE PERFORMANCE OF ELECTRIC POWER SYSTEMS

Wind energy represents one of the most important renewable energy resources that can support electrical power systems. Behaviour of wind turbines following contingencies may deteriorate system stability. This requires an extensive analysis of the possible effect of wind energy on the entire power system performance. This paper investigates the effect of wind energy on power system dynamic response. This is achieved by replacing conventional generators gradually by wind turbine (WT). Also, the optimal location of WT has been determined by checking influence on steady state operation. In addition, the effect on total fuel cost is considered to determine the optimal location of WT. The IEEE 30-bus system is used during the study. The results indicate that the system stability is enhanced in most cases with integrating wind energy into power system. The results can provide a scope for future planning and expansion in electric power systems

Pengaruh Harga Tembakau Internasional, Jumlah Produksi Domestik Dan Nilai Tukar Terhadap Nilai Ekspor Tembakau Indonesia (Studi Ekspor Tembakau Indonesia Tahun 1985-2014)

The main objective of this study is to understand and to explain the influence of International tobacco prices, number of domestic production and exchange rate against Indonesian tobacco export value. This type of research study is explanatory research with quantitative approach. This study used secondary data time series from the years from 1985 to 2014. Data was analyzed further by multiple linear regression analysis with the support of IBM SPSS Statistics program 20. The results of this study Is, International tobacco prices, number of domestic production and exchange rate simultaneous affected the value of Indonesia's tobacco exports significantly. Partial test in this research study showed that the International tobacco prices, number of domestic production and the exchange rate significantly affected of Indonesia tobacco exports value. Based on the results, it is recommended for Indonesia to sign and participate in FCTC Treaty in order to protect the tobacco industry in the country and improve the competitiveness of Indonesia tobacco in in the global market