ORCID Profile
0000-0003-0083-0517
Current Organisations
Binus Business School
,
Universitas Multimedia Nusantara - Kampus Tangerang
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Publisher: Universitas Multimedia Nusantara
Date: 06-2013
DOI: 10.31937/SI.V4I1.240
Abstract: Penelitian ini bertujuan untuk melakukan analisis dan perancangan prototipe aplikasi tracking bis Universitas Multimedia Nusantara pada platform Android. Perancangan prototipe aplikasi ini menggunakan beberapa diagram Unified Modeling Language (UML) antara lain use case diagram, class diagram, sequence diagram, dan activity diagram untuk menggambarkan aplikasi yang akan dibuat. Aplikasi yang dibuat dirancang untuk memudahkan pihak universitas atau mahasiswa pengguna bis k us untuk melih at informasi bis k us antara lain rute bis k us, posisi bis k us, dan jadwal bis k us. Kata kunci—Android, tracking kendaraan
Publisher: Yayasan Appsikon Wedyatama Indonesia
Date: 31-08-2021
Abstract: Objective – To help MSME businesses, especially PO. Bunga Tani needs the use of information system technology.Methodology – This research using qualitative method and TOGAF ADM framework can provide an overview of sales information system design on PO. Bunga Tani, by using the preliminary phase to phase E, namely opportunity and solutions.Findings – The results of the study found MSMEs PO. Bunga Tani has problems in its business activities, so it is necessary to implement information system technology. Therefore, analysis and design of information systems to produce a blueprint for the design of sales information systems in their business processes in accordance with the needs of MSMEs PO. Bunga Tani.Novelty – By knowing the feasibility test in analyzing and designing sales information systems using the enterprise architecture scorecard method, to know the proposed analysis and design is feasible or not.Keywords: Enterprise Architecture, Information System Technology, PO. Bunga Tani, Sales, TOGAF ADM Framework
Publisher: Universitas Multimedia Nusantara
Date: 21-06-2017
Abstract: This research was made with purpose to measure the capability of human resource and work management in PT. X using COBIT 5.0. In the assessment process, researcher applied 1 domain (align, plan, and organize) with 2 processed, Manage Human Resource APO 07) and Manage Service Agreement (APO 09). Data collection was obtained from the distribution of questionnaires to IT ision (there were 127 items of the question and 10 respondents). The result of this research figured out that APO 07 stopped in level 2 with score 82.50 in level 3 and APO 09 ended in level 3 with score 84.10 in level 4. In conclusion, there were still few problems that made human resources in PT X unable to reach level 5. PT.X ought to do audit regularly in deep and holistically. Keywords— Align Plan and Organize, Capabilities Level, COBIT 5.0, Manage Human Resources, Manage Service Agreement REFERENCES [1] Sumarsono, Sonny. 2003. Ekonomi Manajemen Sumber Daya Manusia. Jakarta: LPFE-UI. [2] Gondodiyoto, Sanyoto. 2003. Audit Sistem Informasi (Pendekatan COBIT). Bekasi : Mitra Wacana Media. [3] ISACA. 2013. COBIT 5 A Business Framework for the Governance and Management of Enterprise IT. USA : Enterprise GRC Solution Inc. [4] ISACA 2013. COBIT 5 for Information Security. USA : Enterprise GRC Solution Inc. [5] Arbie, E. 2000. Pengantar Sistem Informasi Manajemen, Edisi ke-7. Jakarta : Bina Alumni Indonesia. [6] Arikunto, Suharsimi. 2006. Metodelogi Penelitian. Yogyakarta : Bina Aksara. [7] Arikunto, Suharsimi. 2010. Prosedur Penelitian Suatu Pendekatan Praktik. Jakarta : Rineka Cipta. [8] Davis, Chris, Mike Schiller, & Kevin Wheeler. 2011. IT Auditing Using Controls to Protect Information Assets, 2nd Edition. English : Mc Graw Hill. [9] Follet, Mary Parker. 1999. Visionary Leadership and Strategic Management. MCB University Press. Women in Management Review Volume 14. Number 7.Gondodiyoto, Sanyoto. 2003. Audit Sistem Informasi (Pendekatan COBIT). Bekasi : Mitra Wacana Media. [10] Hasibuan,M. 2003. Manajemen Sumber Daya Manusia. Jakarta: PT. Bumi Aksara. [11] Hasibuan,M. 2003. Organisasi dan Motivasi. Jakarta: PT. Bumi Aksara. [12] Herzberg, Frederick. 2006. Perilaku Organisasi Edisi 10. Yogyakarta: Andy. [13] Jogiyanto. 2005. Sistem Teknologi Informasi. Yogyakarta : Andi Offset. [14] ISACA. 2012. COBIT 5 Enabling Processes. USA : Enterprise GRC Solution Inc. [15] ISACA. 2003. Audit and Control of Information System. USA : Enterprise GRC Solution Inc. [16] Kusumah, Wijaya dan Dwitagama Dedi. 2011. Mengenal Penelitian Tindakan Kelas. Jakarta : PT Indeks. [17] Littlejohn, Stephen W. 1999. Theories of Human Communication, 6th Ed. Belmont CA : Wadsworth Publishing. [18] Muhyuzir T.D. 2001. Analisa Perancangan Sistem Pengolahan Data, Cetakan kedua. Jakarta : PT Elex Media Komputindo. [19] O’Brien, James A. 2010. Management Information System (11th Edition). New Jersey: Pearson Prentice Hall. [20] O’Brien, James A. 2005. Pengantar Sistem Informasi: Perspektif Bisnis dan Manjerial (12th Edition). Jakarta: Salemba.
Publisher: Yayasan Appsikon Wedyatama Indonesia
Date: 31-08-2021
Abstract: ERP or Enterprise Resource Planning is a design that has been applied in an educational institution or company that can be used to organize, coordinate and manage the system resources in it to be more integrated. The refusal of system users to use the ERP system (new system) is one of the failure factors for ERP system implementation that should be considered by higher education companies. User's lack of understanding by users can cause users to simply be forced to use without being adapted to a qualified use of the ERP system. In addition to the importance of the ERP implementation process in a company or university, there is also an influence on the system's user experience as the key to the success of ERP implementation to minimize failures in the ERP system process. This study uses the User Experience Questionnaire Framework to analyze, measure and find out significantly how much influence the user experience level has on the PeopleSoft Oracle C us Solution ERP system using the six aspects contained in the framework UEQ on the modules Student Record, Academic Advisement, and Student Financial in the respective departments at UMN. The research was conducted quantitatively, namely the collection and collection of data to be carried out through the distribution of questionnaires online and carried out using SPSS software. The results of the measurement level obtained based on the mean and benchmark data user experience from the six UEQ scales from the highest to the lowest value level are Dependability is in the category (Excellent), Stimulation is in the category (Excellent), Novelty is in the category (Excellent), Perspicuity category is in the category (Good), Attractiveness is in the category (Good), and Efficiency is in the category (Good) and partially or completely can have a significant 61% influence on the use of modules in the ERP system at UMN. Keywords: ERP (Enterprise Resource Planning), UEQ (User Experience Questionnaire), Quantitative, SPSS.
Publisher: Universitas Multimedia Nusantara
Date: 19-03-2019
DOI: 10.31937/SI.V9I2.998
Abstract: Import is one of the trade process conducted between two countries, the import process is done by a country to meet the needs of the country that is not meet by the ability of the country. Indonesia also imports many items such as fuel or rice. Therefore, to reduce the level of imports, we need to know which sector has the most import rate and whether the level of imports in that sector is increasing or not, so Indonesia can save the country's foreign exchange reserves.Import data Indonesia displayed in the form of visualization of data created using the method of Visual Data Mining (VDM) and using Power BI as a tools. Indonesian Import Prediction is done to know the growth of Indonesia import rate by using Linear Regression method and using SPSS tools.In a study of the growth of import levels in Indonesia, Indonesia has an import rate that increased between 8-20%, but in some periods experienced an increase and decrease caused by other factors such as consumption expenditure, currency exchange rates and state revenues.
Publisher: Universitas Multimedia Nusantara
Date: 02-07-2020
Abstract: This research was conducted to find out whether the Dynamic Scripting method that has been used before only on zeus characters can be generalized to be used on other characters on the Dota 2 game. Dynamic scripting works by using the rulebase where the rulebase contains actions that determine the actions performed by Artificial Intelligence (AI). In addition, some adjustments have been made to existing methods. To find out whether the performance of a generalized and adjusted model is better than the previous model, a test has been conducted where AI is made with dynamic scripting against AI provided by the valve in the Dota 2 game. In addition, AI has also been tested against humans. Then the performance of AI will be analyzed by comparing the winning ratio and several other supporting variables. The results of this study are that AI got a low winning percentage against standard AI and cannot win at all and give poor performance against humans. It can be concluded that the Dynamic Scripting method cannot be generalized to other characters in the Dota 2 game.
Publisher: IEEE
Date: 25-10-2021
Publisher: Universitas Multimedia Nusantara
Date: 19-03-2019
DOI: 10.31937/SI.V9I2.991
Abstract: PT Nitto Alam Indonesia is a Manufacturing company engaged in screw manufacturing services. The company has a total of 134,252 rows sales and production data, but the data has never been analyzed so that the information is still not fully explored. This research proposes to make a visualization in the form of a dashboard containing sales and production data at PT Nitto Alam Indonesia in 2014 – 2018. It will be shown by using visual data mining (VDM) method with Tableau Software tools. The purpose of this study was to assist PT Nitto Alam Indonesia in analyzing sales and production data to find information that had never been explored before. The results of this study are that the patterns of sales and production can be known for the last 5 years. The sales pattern is included in the type of cycle with the highest sales peak located in the fourth quarter in 2017 at 6.552%. In addition, the performance of sales and production from 2014 to 2018 increased consistently. This research has been validated by applying User Acceptance Tests at PT Nitto Alam Indonesia.
Publisher: Universitas Multimedia Nusantara
Date: 27-06-2021
Abstract: Data is an important thing as a base of an analytic or a hypothesis for concluding participant vote data in the Indonesian General Election. The data needs to be processed and secured, so the integrity of the data is in good condition. It also needs to protect the participant voting rights, so the information is correctly displayed. The research problems include creating a system that protects the integrity of election data and creating a system that protects election rights for each voter. Based on the problems, this research discusses a blockchain-based electronic voting information system that would secure the integrity of data and also protecting the participant voting rights in a General Election. The system uses Ethereum as a blockchain with Solidity as a programming language to build a smart contract and is built in Microsoft Windows platform. In this research, consortium blockchain and biometric fingerprint authentication are used as a problem-solving method, and waterfall steps is used as a system development method. The result of this research is a proposed design of the e-voting system. The conclusion based on this research is a blockchain-based e-voting system that secures the integrity of the data in a selection process and ensures protection to each vote right. Index Terms—Authentication Blockchain Data Integrity E-Voting System
Publisher: Universitas Multimedia Nusantara
Date: 02-04-2018
DOI: 10.31937/SI.V8I2.618
Abstract: Abstract – The library.umn.ac.id is the library website which is owned by the Universitas Multimedia Nusantara. The website has never been examined with usability especially its user interfaces. In conducting the evaluation, the methods of usability tests are applied that is users’ observations of the website user interface design continued by collecting and analyzing data. In addition, data is collecting by creating a questionnaire which is based on System Usability Scale (SUS) to measure users’ satisfaction when using the system. The data is analyzed by applying usability test that refers to the theory of Jacob Nielsen (2003) which is composed of five components that are learnability, efficiency, memorability, errors, and satisfaction. The results of this research, some new user interfaces are recommended for enhancing the library website that has been fully the old version. As a result, the user interfaces prototype is easy to use and easy to understand based on the students’ responses compared to the old version. Keywords-Usability Evaluation, User Interface, Usability Testing, System Usability Scale
Publisher: EJournal Publishing
Date: 02-2014
Publisher: IOP Publishing
Date: 03-2019
Publisher: Universitas Multimedia Nusantara
Date: 12-12-2016
DOI: 10.31937/SI.V7I2.547
Abstract: Regional Income and Expenditure Budget (APBD) is a very important thing in the progress of a region. APBD is an indicator of public welfare level in a region. Data of APBD that is shared on the official website data.go.id is still hard to read and understood, and for that reason the author will compare the budget value of APBD in every province, district, and city by using visualization. The method the author used is Visual Data Mining by creating an APBD visualization dashboard according to provinces, districts, and cities. Tableau Software is used to create the dashboard because Tableau allows an interactive, easy-to-use dashboard for analyzing lots of data. Besides, Tableau is already supported by many platform such as web based, iPhone app, also Android app, and this application is one of the common for visualization so there are a lot of sources to get more information and to develop visualization. The result of this research could help the government in reevaluating the APBD financial budget in every region in Indonesia. This research can help the people to know the APBD budget applied in every region. Index Terms-Regional Income and Expenditure Budget (APBD), financial, visualization.
Publisher: Universitas Multimedia Nusantara
Date: 06-07-2018
DOI: 10.31937/SI.V9I1.856
Abstract: This research is conducted to know and develop the process of determining scholarship recipients in BFI Finance Indonesia Tbk which until now still done by manual process. Based on interview, it was found that there has been a delay in decisionmaking from the deadline that has been determined. From this study the authors hope to help decision makers to be able to use the system that has been made in order to help the decision-making process. The problem discussed in this research is how the implementation of Profile Matching method is used in determination of scholarship recipients of PT BFI Finance Indonesia Tbk.? Profile Matching method is used to provide recommendations of students who are entitled to get based on the total value that is the result of core factor and secondary factor. The variables used are GPA, Achievement, Psychotest score, and interview value. For core factor attributes: GPA, psychotest score, and interview value, while for secondary factor attribute: achievement. For the total value weighs 80% for core factor and 20% for secondary factor. The result of this research is a rank of candidate based on calculation by web-based decision support system using profile matching method. Index Terms— DSS, Profile Matching, scholarship, BFI, system.
Publisher: Universitas Multimedia Nusantara
Date: 06-2013
DOI: 10.31937/SI.V4I1.241
Abstract: Pemerintah Republik Indonesia telah secara resmi memberikan ijin bagi diselenggarakannya pendidikan sekolah rumah atau homeschooling bagi masyarakat Indonesia yang menginginkannya. Dan legalitas kegiatan pendidikan ini ada di bawah payung Derektorat Jendral Non-Formal dan Informal. Penyelenggara pendidikan sekolah rumah adalah keluarga-keluarga yang tersebar di seluruh Indonesia. Salah satu sisi kelebihan dari sekolah rumah adalah pada fleksibilitas waktu belajar, dimana guru (yang adalah orangtua siswa) dan siswa dapat mengambil waktu belajar sesuai dengan situasi mereka, dan proses belajar-mengajarnya dapat dilakukan berulang-ulang sesuai kebutuhan siswa, s ai siswa dapat menguasai materi yang dipelajarinya. Tujuan dari studi ini adalah menerapkan sistem e-learning pada komunitas sekolah rumah di daerah Tangerang. Dengan adanya teknologi e-learning maka para penyelenggara sekolah rumah dapat memanfaatkan teknologi ini untuk mendukung proses belajar-mengajar dan berbagi sumberdaya pembelajaran. Dengan demikian e-learning akan dapat meningkatkan mutu, efisiensi serta efektivitas pembelajaran para penyelenggara dan peserta sekolah rumah. Untuk menerapkan sistem e-learning yang efektif, perlu dilakukan metode pengembangan sistem, yaitu mulai dari analisis karakteristik penyelenggara dan peserta sekolah rumah beserta kebutuhannya, desain sistem, implementasi sistem, serta evaluasi dari penerapan sistem e-learning tersebut. Sistem e-learning tersebut pada saat ini telah berhasil diterapkan dengan nama domain sekolahrumah.org. Kata kunci—sistem e-learning, sekolah rumah, home schooling, moodle
Publisher: Universitas Multimedia Nusantara
Date: 05-07-2018
Abstract: The aim of this paper is to create a data visualization that can convey information on poverty distribution of every province in Indonesia and to find a connection with education level. The method used is Eight-step data visualization and data mining methodology. Data for this research are taken from BPS from the year 2013 to 2015. Data collected after the data extracted and cleansing is 6000 records. Time needed to convert data from several publications and put it into one Excel file is 2 weeks. Tableau is chosen as tools for creating the Data Visualization. With this tools, data showed in a story dashboard which consists of 3 dashboards. The first dashboard is a mapping of poverty data onto provinces of Indonesia. The second dashboard is a mapping and distribution of education levels on cities and counties in Indonesia. The third dashboard is showing a ranking of areas with the highest percentage level of a citizen of education lower than elementary school in Indonesia. Based on the User Acceptance Test to BPS staff, authors have been able to produce the Story required, and interactive. As a conclusion from Data Visualization has been made, high poverty in certain areas not immediately is directly proportional to the level of education.
Publisher: Yayasan Appsikon Wedyatama Indonesia
Date: 31-08-2021
Abstract: Objective – To analyze the relationship between a company’s information security approach/culture with its information security governance capabilities based on COBIT 5 framework and provide recommendations that can be used to improve the company's information security capabilities per COBIT 5 standard. Methodology – The research uses qualitative and quantitative methods by conducting interviews and distributing questionnaires to 3 members of the IT Department at PT XYZ. Findings – The research found that the measured COBIT 5 processes (APO13 and DSS05) failed to reach the expected target (level 4), with each DSS05 and APO13 can only reach level 1 and 2 respectively. In addition, several flaws were also found in the company’s information security culturethat may have contributed directly or indirectly to the current state of the company’s information security capabilities. Novelty – In this study, the researchers expand the previous study on information security culture conducted in 2010 by performing a security audit on a company's IT department to analyze the connection between corporate culture, especially information security culture and the capability level of information security governance. The company thus can make improvements or corrections to its information security approach/culture based on the recommendations provided with COBIT 5 framework. Keywords: Capability Level COBIT Governance Information Security Culture.
Publisher: Universitas Multimedia Nusantara
Date: 22-12-2017
Abstract: Snapchat, and Instagram are two social networks which recently gain their users after adopting such a feature called "Story" which allows a certain post to be disappeared after a certain time. This research takes up this technology trends analyzing the factors that probably affect the behavioral intention to use Snapchat and Instagram stories among generation Z. Factors are analyzed using Structural Equation Modeling, with basis model and variables from Technology Acceptance Model. Data collection was targeted to finished within 1 week using online questionnaire with respondent from Jakarta and Tangerang for 100 respondent that are using both Snapchat stories and Instagram Stories. There are two tools researcher usually use to analyze Structural Equation Modeling: SPSS AMOS and LISREL. In this research, researchers choose AMOS. From six hypothesis proposed for Snapchat analysis, four hypothesis is accepted, while the other two are rejected. Meanwhile, on Instagram Stories analysis, five hypothesis is accepted and one hypothesis is rejected. This study finds out the Social Presence is an exogenous variable which has a major role in affecting other variables. While Perceived Enjoyment influenced the behavioral intention to use Snapchat and Instagram Stories the most. Index Terms—Structural Equation Modeling, Technology Acceptance Model, influence, generation Z, Snapchat, Instagram REFERENCES [1] L. Chin and Z. Ahmad, "Perceived Enjoyment and Malaysian Consumers’ Intention to Use a Single Platform EPayment", SHS Web of Conferences, vol. 18, 2015. [2] M. Ariff, T. Shan, N. Zakuan, N. Ishak and M. Wahi, "Examining Users' E-Satisfaction in the Usage of Social Networking Sites Contribution from Utilitarian and Hedonic Information Systems", IOP Conference Series: Materials Science and Engineering, vol. 58, 2014. [3] K. Hassanein and M. Head, "Manipulating perceived social presence through the web interface and its impact on attitude towards online shopping", International Journal of HumanComputer Studies, vol. 65, no. 8, pp. 689-708, 2007. [4] P. Surendran, "Technology Acceptance Model: A Survey of Literature", 2012. [5] F. Davis, "Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology", MIS Quarterly, vol. 13, no. 3, p. 319, 1989
Publisher: Universitas Multimedia Nusantara
Date: 22-12-2017
Abstract: The aim of this paper are: to create a data visualization that can assist the Government in evaluating the return on the development of health facilities in the region and province area in term of human resources for medical personnel, to help community knowing the amount of distribution of hospitals with medical personnel in the regional area and to map disease indicator in Indonesia. The issue of tackling health is still a major problem that is not resolved by the Government of Indonesia. There are three big things that become problems in the health sector in Indonesia: infrastructure has not been evenly distributed and less adequate, the lack of human resources professional health workforce, there is still a high number of deaths in the outbreak of infectious diseases. Data for the research are taken from BPS, in total 10,600 records after the Extract, Transform and Loading process. Time needed to convert several publications from PDF, to convert to CSV and then to MS Excel 3 weeks. The method used is Eight-step Data Visualization and Data Mining methodology. Tableau is chosen as a tool to create the data visualization because it can combine each dasboard inside a story interactive, easier for the user to analyze the data. The result is a story with 3 dashboards that can fulfill the requirement from BPS staff and has been tested with a satisfied result in the UAT (User Acceptance Test). Index Terms—Dashboard, data visualization, disease, malaria, Tableau REFERENCES [1] S. Arianto, Understanding of learning and others, 2008. [2] Rainer Turban, Introduction to Information Systems, Danvers: John Wiley & Sons, Inc, 2007. [3] V. Friedman, Data Visualization Infographics, Monday Inspirition, 2008. [4] D. A. Keim, "Information Visualization and Visual Data Mining," IEEE Transactions on Visualization and Computer Graphics 8.1, pp. 1-8, 2002. [5] Connolly and Begg, Database Systems, Boston: Pearson Education, Inc, 2010. [6] E. Hariyanti, "Pengembangan Metodologi Pembangunan Information Dashboard Untuk Monitoring kinerja Organisasi," Konferensi dan Temu Nasional Teknologi Informasi dan Komunikasi untuk Indonesia, p. 1, 2008. [7] S. Darudiato, "Perancangan Data Warehouse Penjualan Untuk Mendukung Kebutuhan Informasi Eksekutif Cemerlang Skin Care," Seminar Nasional Informatika 2010, pp. E-353, 2010.
Publisher: Yayasan Appsikon Wedyatama Indonesia
Date: 31-08-2021
Abstract: Objective –To measuring and knowing the level of capability, the value of gaps, and recommendations forimprovement for SIERA information system performance using the framework COBIT 5 based on the processAPO08 Manage Relationship and BAI07 Manage Change Acceptance and Transitioning.Methodology –This research uses a qualitative method and a quantitative method called the mix method. Thequalitative method is used to analyze the level of capability expected from the application of the SIERA informationsystem based on the results of interview answers. In contrast, the quantitative method is used to analyze the level ofcapability that has been achieved so far based on the results of a questionnaire that has been filled out by fourrespondents determined by a convenient s ling technique.Findings – The research found the results that the APO08 domain stopped at level 2, and the domain BAI07 stoppedat desired level 1, so corrective actions need to be taken to reach the level expected level 4.Novelty – By measuring the performance evaluation of the SIERA system, the Regional Asset Management Agencyof DKI Jakarta Province can determine the level of capability that has been achieved and the value of the gap withthe expected level of capability, and assisting the Regional Asset Management Agency of the DKI Jakarta ProvincialGovernment to take corrective actions based on recommendations from the findings in SIERA.Keywords: APO08 Manage Relationship, BAI07 Manage Change Acceptance and Transitioning, COBIT 5, DKIJakarta Regional Asset Management Agency
Publisher: Universitas Multimedia Nusantara
Date: 08-2016
DOI: 10.31937/SI.V6I2.227
Abstract: Main priority aspects of information and communication technologies is given to a control or control mechanisms, both internal and external, to ensure that the report and the decision received and generated by the management decision-making is an honest and have high integrity based on the results of the audit conducted on based systems of information and communication technology. The object of research is the PT Erajaya Swasembada, Tbk. This company was founded in 1990, running a business as a distributor of mobile phones, which have widespread outlets in various cities in Indonesia. Business processes studied include sales, purchasing, finance, and the warehouse. The system used is “Erajaya Live Application Server” version of the July-December 2012 and based ERP (Enterprise Resource Planning). The research was including a General Controls, Boundary Controls, Input Controls, Process Control, Output Controls, Database Control, Application Communication control, and Operating system controls. Data collection methods by performing interviews with the IT managerial departments, distributed questionnaires to the five respondents form of answer was “Yes”, “No” or “Do not Know”, and also observations to the PT Erajaya Swasembada, Tbk. The collected data were analyzed using techniques COBIT 4.1. The results obtained 15 audit findings. The results of maturity model formulation were known domain Plan and Organize at level 4, Acquire and Implement at level 5, Deliver and Support at level 4, Monitor and Evaluate at level 4. Index Terms - Audit, COBIT 4.1, Maturity Model.
Location: Indonesia
No related grants have been discovered for Johan Setiawan.