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Research paper thumbnail of An Evaluation: RSA Private Key Exposure Impacts All Key Vulnerabilities

Research paper thumbnail of Sentiment Analysis of Indonesian New Capitol (IKN) on Twitter Using Classification Algorithm

Research paper thumbnail of Combining Two Models of Successful Information System Measurement

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2018

This paper purposes is to measure successful of Academic Advisory information system by combining... more This paper purposes is to measure successful of Academic Advisory information system by combining two models of information system measurement. DeLone & McLean IS Success Model use to measure the successful of system while COBIT framework is to measure system maturity level. Result of this research showed that the successful of Academic Advisory IS affected by User Satifaction, Quality of Service, Quality of System while Maturity level at 3.7. The result also showed there's a relation between level of maturity system with the success of system.

Research paper thumbnail of Analisis proporsi dan portofolio optimal dari saham unggulan berkapitalisasi pasar terbesar di bursa efek Jakarta selama periode tahun 2005-2029 dengan metode solver

Tesis Manajemen, May 31, 2012

This research was carried out to determine the combination of which stocks are the best by formin... more This research was carried out to determine the combination of which stocks are the best by forming portfolios of stocks from the list on the Jakarta Stock Exchange through observational shares analysis in LQ45, JII, and the top ten equity mutual fund share manager during the period of 2005-2009. Therefore the formulation of the problem discussed is “How to construct an optimal portfolio in order to provide optimal return and minimum risk level?” Based on the method of observation of some practitioners, an established stock portfolio can be analyzed through weighting the best stock selection from the LQ45 and JII list, during the period of 2005-2009 and combined with the top ten equity mutual fund share manager. From these methods, there were eight stocks chosen to be the portfolio, and with the Microsoft Excel 2003 application solver method, it is possible to establish the optimum portfolio with minimum risk. The proportion were: AALI = -1.0624%, BBRI = -32.0087%, ASII = 20.8859%, BMRI = 12.5141%, INCO = 8.7302%, PTBA = 5.3430%, PGAS = 11.224%, TLKM = 74=3538% and the total proportion of the eight stocks was 100% . BBRI and AALI shares have negative values therefore it is the time to do a short-selling, but it has not been allowed in Indonesian stock trading. Sell empty or short selling, a term used in the financial world, is a way of gaining profit from the decline in the price of securities such as stocks or bonds. The opposite of “short” is “long” strategy that is used if it is predicted to experience e rise in prices.

Research paper thumbnail of Modeling of Risk Factors in Determining Network Security Level

International Journal of Security and Its Applications, 2014

This paper provides a series of work on risk management models to identify the assets and risks. ... more This paper provides a series of work on risk management models to identify the assets and risks. The goal of modeling them is to analyze and calculate meaning of the level of security in the cyber world. Analyzing and calculating was done by the quantitative method, so that the investment decision in security tools were expected to be objective, which were based on performance and situational experiences in an organization. Risk management was then associated with the calculation of costs that may occur with the point of view of the financial aspects of ROI/CBA, such as NPV, IRR, and ROI, so it can be measured in the level of security of the organization and can be maintained within a certain period. Our model consisted sixteen formulas that can show the increasing level of security based on the cost.

Research paper thumbnail of An Evaluation: RSA Private Key Exposure Impacts All Key Vulnerabilities

Research paper thumbnail of Sentiment Analysis of Indonesian New Capitol (IKN) on Twitter Using Classification Algorithm

Research paper thumbnail of Combining Two Models of Successful Information System Measurement

TELKOMNIKA (Telecommunication Computing Electronics and Control), 2018

This paper purposes is to measure successful of Academic Advisory information system by combining... more This paper purposes is to measure successful of Academic Advisory information system by combining two models of information system measurement. DeLone & McLean IS Success Model use to measure the successful of system while COBIT framework is to measure system maturity level. Result of this research showed that the successful of Academic Advisory IS affected by User Satifaction, Quality of Service, Quality of System while Maturity level at 3.7. The result also showed there's a relation between level of maturity system with the success of system.

Research paper thumbnail of Analisis proporsi dan portofolio optimal dari saham unggulan berkapitalisasi pasar terbesar di bursa efek Jakarta selama periode tahun 2005-2029 dengan metode solver

Tesis Manajemen, May 31, 2012

This research was carried out to determine the combination of which stocks are the best by formin... more This research was carried out to determine the combination of which stocks are the best by forming portfolios of stocks from the list on the Jakarta Stock Exchange through observational shares analysis in LQ45, JII, and the top ten equity mutual fund share manager during the period of 2005-2009. Therefore the formulation of the problem discussed is “How to construct an optimal portfolio in order to provide optimal return and minimum risk level?” Based on the method of observation of some practitioners, an established stock portfolio can be analyzed through weighting the best stock selection from the LQ45 and JII list, during the period of 2005-2009 and combined with the top ten equity mutual fund share manager. From these methods, there were eight stocks chosen to be the portfolio, and with the Microsoft Excel 2003 application solver method, it is possible to establish the optimum portfolio with minimum risk. The proportion were: AALI = -1.0624%, BBRI = -32.0087%, ASII = 20.8859%, BMRI = 12.5141%, INCO = 8.7302%, PTBA = 5.3430%, PGAS = 11.224%, TLKM = 74=3538% and the total proportion of the eight stocks was 100% . BBRI and AALI shares have negative values therefore it is the time to do a short-selling, but it has not been allowed in Indonesian stock trading. Sell empty or short selling, a term used in the financial world, is a way of gaining profit from the decline in the price of securities such as stocks or bonds. The opposite of “short” is “long” strategy that is used if it is predicted to experience e rise in prices.

Research paper thumbnail of Modeling of Risk Factors in Determining Network Security Level

International Journal of Security and Its Applications, 2014

This paper provides a series of work on risk management models to identify the assets and risks. ... more This paper provides a series of work on risk management models to identify the assets and risks. The goal of modeling them is to analyze and calculate meaning of the level of security in the cyber world. Analyzing and calculating was done by the quantitative method, so that the investment decision in security tools were expected to be objective, which were based on performance and situational experiences in an organization. Risk management was then associated with the calculation of costs that may occur with the point of view of the financial aspects of ROI/CBA, such as NPV, IRR, and ROI, so it can be measured in the level of security of the organization and can be maintained within a certain period. Our model consisted sixteen formulas that can show the increasing level of security based on the cost.