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HENGKI TAMANDO SIHOTANG
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Jurnal Mantik
Published by Institute of Computer Science
ISSN : -     EISSN : 26854236     DOI : -
Core Subject : Economy, Science, Education,
Computer Science & IT Economics, Econometrics & Finance Languange, Linguistic, Communication & Media
Jurnal Mantik (Manajemen, Teknologi Informatika dan Komunikasi) is a scientific journal in information systems/informati containing the scientific literature on studies of pure and applied research in information systems/information technology,Comptuer Science and management science and public review of the development of theory, method and applied sciences related to the subject. Jurnal Mantik Penusa is published by Institute of Computer Science (IOCS). Editors invite researchers, practitioners, and students to write scientific developments in fields related to information systems/information technology,Comptuer Science and management science). Jurnal Mantik is issued 4 (FOUR) times a year.
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Articles 2,151 Documents
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Classification of Breast Cancer Using Support Vector Machine and Forward Selection Leliana Harahap; Erwin Setiawan Panjaitan; Muhammad Fermi Pasha
Jurnal Mantik Vol. 4 No. 2 (2020): Augustus: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.957.pp1424-1429

Abstract

Breast cancer represents about 12% of all new cancer cases and 25% of all cancers in women. Early detection and classification of cancer is essential to save a person's life. The causes of breast cancer are multi-factorial and involve family history, obesity, hormones, radiation therapy, and even reproductive factors. Each year, one million new women are diagnosed with breast cancer, according to a World Health Organization report, half of them will die, because it is usually too late when doctors detect cancer. After the selected variable is then evaluated based on certain criteria. If the first selected variable meets the criteria for inclusion, the selection continues. The procedure stops, if no other variables meet the entry criteria and adds the variables one by one. The accuracy of the Support Vector Machine is influenced by several factors, including the comparison of the amount of training data and test data adjusted for k-fold validation. In the comparison of training data and test data the resulting accuracy reaches 97.68% with a total composition of 345 training data (50%) and 345 test data (50%). In the tests carried out, the accuracy of Support Vector Machine and Forward Selection was obtained at 97.68%.
Aplication of Validity Index in K Means and Fuzzy C Means Jontinus Manullang; Pahala Sirait; Andri Andri
Jurnal Mantik Vol. 4 No. 2 (2020): Augustus: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.958.pp1430-1438

Abstract

K-Means and Fuzzy C-Means Clustering is a method of analyzing data that performs the modeling process without supervision (without supervision) and is a method that groups data by partitioning the system. Clusters Clusters and Fuzzy C-Means will produce different clusters in the same dataset, cluster validity index is a method that can be used to improve the results of clustering generated by the clustering method. This study will use the cluster validity index on the kmeans clustering algorithm and Fuzzy C-Means by calculating the index of validity of each kmeans clustering result with k = 2, ..., kmax (k max determined at the beginning) and the results from Fuzzy C-Means with c = 2, ...., cmax (c max is specified at the beginning). By using the cluster validity index, the most optimal cluster is obtained in the second cluster with the Dbi value = 0.45 in the mean K and the second cluster with the Dbi value = 0.5 in the Fuzzy C Mean, and the results of the clustering are consistent.
Fail Path Analysis on Openflow Network Using Floyd-Warshall Algorithm Ebim Fatur Rohman; Ritzkal Ritzkal; Yuggo Afrianto
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.959.pp1546-1550

Abstract

Software-Defined Network (SDN) is a new concept used to solve network problems by separating the control plane and data plane in a different device. Communication between the control plane and the data plane uses the Openflow scenario. SDN has several capabilities in many network technology methods and has been implemented, among others, for routing mechanisms. In routing, there are several problems including failure path. When a fail path occurs, the system will look for another shortest path using the Floyd-Warshall algorithm. The Floyd-war shall algorithm will be implemented using the POX controller. The implementation uses a mesh topology on the mininet emulator and pox as a controller. This research method includes analysis consisting of the preparation of hardware and software requirements, and analysis of how the system works, a design consisting of mesh topology, Floyd-war shall algorithm flowchart, propagation testing, throughput, and latency testing, implementation consisting of operating system installation, Mininet, POX, Applying Mesh topology to the Mininet Emulator, and Applying the Floyd-war shall Algorithm to the POX Controller, manually calculating the Floyd-Warshall algorithm on the mesh topology and testing which consists of testing propagation, throughput, and latency. Furthermore, testing with 3 tests is propagation, throughput, and latency. In testing the throughput and latency there are 3 scenarios.
Credit Card Risk Classification Using K-Nearest Neighbor Weighted Algorithm Based on Forward Selection Sartika Dewi Purba; Pahala Sirait; Arwin Arwin
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.960.pp1551-1559

Abstract

One form of credit card risk is non-performing credit cards, which describe a situation where loan repayment approval on credit cards runs the risk of failure. In the classification technique there are several algorithms that can be used, one algorithm that is often used is Weighted k-nearest neighbor (WKNN). This study aims to improve the performance of the Weighted k-nearest neighbor (WKNN) algorithm by applying the forward selection feature that is used to select each unused feature when starting a feature iteration, the results of the study show that by adding forward performance selection of the Weighted k-nearest algorithm neighbor (WKNN) get a better value that is 86.4%, compared to using the Weighted k-nearest neighbor (WKNN) algorithm without a forward selection that is equal to 60.1%.
Load Balancing Method Performance Analysis on Haproxy and Router OS Yoga Permana; Ritzkal Ritzkal; Yuggo Afrianto
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.961.pp1588-1596

Abstract

Increasing requests for client connections to servers on a network can cause a problem with server performance to decrease and too many user requests make the workload on the server increase rapidly resulting in the server being down, so we need technology that handles complex network usage. Then it can be solved with a load balancing system. Several studies on load balancing on haproxy and router OS with various algorithms applied will produce different performance, including round robin, least connections, and source algorithms on haproxy load balancing, while NTH, PCC, and ECMP on load balancing routers OS. Testing is done with 3 scenarios, scenario 1 with a load of 10 users, scenario 2 with a load of 20 users, and scenario 3 with a load of 30 users. The test parameters used are throughput, delay, and jitter using the webserver stress tool and wireshark. The results of the performance measurement of the load balancing method on haproxy generally show that the least connection is better than the round robin and source methods, this can be seen from the measurement figures for delay and jitter parameters that are best found in the loast connection method. While the results of the performance measurement of the load balancing method on the OS router, there are two, one shows that PCC is better, this can be seen from the measurement numbers of the delay and jitter parameters, then the second shows that the ECMP method is better, this can be seen from the throughput parameter measurement figures and delay.
Student Attendance Information System Using Web-Based Nodemcu ESP8266 Arif Sulistio; Ritzkal Ritzkal; Yuggo Afrianto
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.962.pp1597-1603

Abstract

Presence or attendance in educational institutions such as Ibn Khaldun University Bogor is an important aspect in supporting the course of the lecture system, currently the attendance system at Ibn Khaldun University Bogor, especially in the Informatics Engineering study program, still uses a conventional system where students still have to sign an attendance sheet at the time lectures. In this study, there are two problem formulations (i) How to design and implement student attendance system devices using radio frequency identification (RFID) technology and WEB-based NodeMCU ESP8266, (ii) How to test WEB to display information on the presence of Informatics Engineering students using Black Box. The purpose of this study consisted of two stages (i) Designing and implementing a student attendance system device using radio frequency identification (RFID) technology and WEB-based NodeMCU ESP8266, (ii) being able to implement WEB testing to display information on the attendance of Informatics Engineering students using Black Box. Where in this study the framework has four stages, namely (i) analysis, (ii) design, (iii) implementation and (iv) testing. The results obtained in the research (i) Design and implementation of student attendance system devices using radio frequency identification (RFID) technology and WEB-based NodeMCU ESP8266 (ii) Implementation of WEB testing to display information on the presence of Informatics Engineering students using Black Box and get results appropriate.
Prototype Control of Lighting Equipment Using Web-Based Arduino Microcontroller Afif Rafyan; Ritzkal Ritzkal; Yuggo Afrianto
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.963.pp1604-1610

Abstract

Control of lighting equipment still uses the conventional way, namely by turning it on and off via a manual switch with the presence of light equipment control. It makes it easy for users to monitor or control lights anytime and anywhere with a note that the light equipment control will be applied using a WEB-based arduino microcontroller. From that background. remote control system, makes it easier for users to control and monitor room lights that are quite far away by conducting 4 stages of research (i) System Performance Analysis and Requirements Analysis (ii) Hardware Design Design, Schematic Design, Database Design, WEB Design, Topology Network (iii) Hardware Implementation and Software Implementation (iv) Testing. The results of this study are in the form of a control and monitoring system using a predetermined use with a system using the WEB. When the light is on, it will appear on the WEB which will become a printable report.
Analysis of the Effect of the BI Rate, Inflation and Exchange Rates on the Composite Stock Price Index (Study on the Indonesia Stock Exchange (IDX) for the 2014-2018 period) Mariska Sisilia; Lidia Rori Hulu; Sani Sutri Cuary; Steven Ginting
Jurnal Mantik Vol. 4 No. 2 (2020): Augustus: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.964.pp1397-1403

Abstract

The influence of capital market trading is important for the life of the capital market itself. The effect of capital market trading is an important point of consideration by investors. Some of them such as interest rates, inflation and exchange rates are included in the consideration indicators when investing in capital markets. hence the purpose of research to see how much impact of BI Rate (Interest Rate), Inflation and Exchange Rate on CPI in IDX 2014-2018. Where the research uses secondary data, using monthly data listed in monthly Statistic in all bi rate, inflation, exchange rate and monthly JCI data from 2014-2018 with a sample number of 60. Based on the results of bi rate F (Simultaneous) test, inflation and exchange rate simultaneously have a significant influence on the frequency of JCI. from the test result t (Partial) with a partial Variable Only BI Rate that negatively and significantly affects JCI in IDX. This is the case if there is an increase in the variable BI Rate, so that it can make the frequency of the Combined Share Price Index increase. The amount of variation in BI Rate, inflation and exchange rate is only able to explain JCI by 19% , the remaining 81% is explained outside of the research variables.
Water Turbidity Monitoring System, Water Temperature and Fish Feed Using Arduino Mega 2560 Web-Based Abdul Khayr; Ritzkal Ritzkal; Bayu Adhi Prakosa
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.965.pp1611-1615

Abstract

In daily life, fish that are kept in an aquarium must be aware of water turbidity, water temperature and feeding so that these fish need tools that can be adjusted continuously. As for the background of this writing is checking water turbidity, water temperature and feeding fish are still done manually, causing problems when fish keepers are busy or have to leave the house for a long time. The formulation of the problem of this research are (i) how to design and implement a monitoring system for water turbidity, water temperature and fish feed using the WEB-based Arduino Mega 2560 which can be scheduled based on time and (ii) how are the results of the monitoring system testing water turbidity, water temperature fish feed using WEB-based Arduino Mega 2560. By conducting 4 stages of research (i) Analysis of System Work and Requirements Analysis (ii) Design of Hardware Design, Schematic Design, Database Design, WEB Design, Network Design (iii) Hardware Implementation and Software Implementation (iv) Testing. The results of this study are a monitoring system for water turbidity, water temperature and fish feed according to a predetermined schedule with a monitoring system using the web. Water turbidity, water temperature and feeding are adjusted as needed. The servo will be active if the time on the real time clock (RTC) is the same as the schedule data variable that has been set.
Application Of Web Engineering Methods In Designing A Building Rental Information System In Kemuning Building Bekasi Wicaksono, Bambang Rizki; Siti Nurajizah
Jurnal Mantik Vol. 4 No. 3 (2020): November: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.966.pp1560-1567

Abstract

The building is a place to hold an event with a large number of visitors. The use of the building in holding an event makes it easier for event organizers in the process of implementing the event. The current building rental system at the Kemuning building hall takes a long time in the process of renting the building. The search for information and the process of listing the status of building leasing still uses a manual system, which is recorded in a rental book. This can make the building rental system unstructured and poorly controlled. An information system can make it easier for tenants in the rental process for the yellow building. The building rental information system application uses the web engineering method which aims to build an integrated information system that can engineer the web with several technical requirements and identify information. The resulting information system is a building rental website that can minimize errors made by officers in registering tenants, data building rental recapitulation, avoiding data manipulation and being a distinct advantage for managers who prioritize technological advances by using the system through website-based database applications. The features on this website include a list of packages offered, the ease of making building rental reservations and making the payment process easier. This building rental information system can provide convenience for consumers and officers in the process of renting a building and managing data on the rental of the Kemuning building.

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