International Journal of Computing and Informatics (IJCANDI)
Published by Universitas Mulawarman
ISSN : 25022334     EISSN : -
IJCANDI (INTERNATIONAL JOURNAL OF COMPUTING AND INFORMATICS) ISSN: 2502-2334 is a peer reviewed open-access journal published four times a year (February, May, August, November) in English-language, provides scientists and engineers throughout the world for the exchange and dissemination of theoretical and practice-oriented papers dealing with advances in computing and informatics. All the papers are refereed by two international reviewers, accepted papers will be available on line (free access), and no publication fee for authors. IJCANDI is organized by Faculty of Computer Science and Information Technology, Computer Science and Information Technology Department - Universitas Mulawarman, Faculty of Computing and Informatics - Universiti Malaysia Sabah, and Faculty of Computer Science, Universitas Muslim Indonesia.
Articles
14
Articles
Backpropagation and Genetic Algorithm in Network Traffic Activities Forecasting

Purnawansyah, Purnawansyah

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 1 (2017): February 2017
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

This paper presents techniques based on the development of backpropagation (BP) and genetic algorithm models for calculating and analyzing the daily network traffic activities at Universitas Mulawarman, East Kalimantan, Indonesia. The experiment results indicate that a strong agreement between model predictions and observed values, since MAPE is below 5%. Thus, the use of network traffic is becoming a more effective, efficient and optimal. Model optimization is one of future works.

Towards a Web Based Adaptive and Intelligent Tutoring System

Noguera, Jose, Ayeni, Foluso Emmanuel, Okuboyejo, Sena, Adusumilli, Sumana

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 1 (2017): February 2017
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

E-Learning provides convenient and cost effective education. Learning management systems (LMSs) like Blackboard and Moodle are common platforms. They support teachers in several ways including creating online courses. However, these systems do not consider the individual differences of students and do not adapt according to their needs. To be highly useful, these systems should be built on self-contained and reusable learning objects (LOs) using adaptive hypermedia technologies. Adaptive hypermedia systems apply different forms of user models to contents and links. This paper presents the architecture, design and significance of web-based adaptive and intelligent learning system that optimizes individual learning performance. The system efficiently integrates reusable learning objects and adaptive hypermedia technologies.

Telemedicine Diffusion in a Developing Country: A case of Senegal

Ekanoye, Femi, Ayeni, Foluso Emmanuel, Olokunde, Temitope, Nina, Vekima, Donalds, Carole, Mbarika, Victor

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 1 (2017): February 2017
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Senegal is located in West Africa where health care resources are extremely limited. Although it is improving each day, many say that an even bigger improvement is needed to decrease the high mortality rate, and ensure good health countrywide. Several factors justify the efficient application of Telemedicine in Sub-Saharan Africa (SSA)  to augment the declining health care delivery system in that region of the world. In doing research, telemedicine, along with other solutions, play a huge role in ensuring this plan is effective because of its convenience and benefits. In recent years, the use of telemedicine has become increasingly popular in countries like Senegal. Telemedicine is significant because of its ability to transmit the needed information promptly. Besides, it is a means to communicate and care for patients having limited access to health care at efficient and personalized level. Over the years, the use of telemedicine has extended to several countries and the technology continues to improve each day.

Telemedicine Diffusion in a Developing Country: A case of Uganda

Ekanoye, Femi, Olokunde, Temitope, Ayeni, Foluso Emmanuel, Nina, Vekima, Donalds, Carole, Mbarika, Victor

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 1 (2017): February 2017
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Telemedicine is the diagnosis and treatment of patients by the use of telecommunications technology. Telemedicine has become a popular technological development for long-distance health care and continuing education.Telemedicine is used to assist with giving aid in rural and remote areas that can’t afford real medical help.  In a country like Uganda that has a population of roughly 33 million people and a little over 130 districts, the rate of HIV/AIDS are rising and leaving the life expectancy to about 53 years old. Similar to countries in Africa, Uganda has a very poor healthcare. Most residents of Uganda do not live near healthcare facilities and those who do live nearby may find healthcare unaffordable.This paper captures the different case studies that have benefited Uganda, the current status of telemedicine in Uganda, and what can possibly happen in the nearest future with the rise in the use of technology in telemedicine as well as the infrastructure and need for telemedicine.  

Comparative Analysis of Tsukamoto and Sugeno Fuzzy Methods For Procurement Optimization

Agus, Fahrul, Hairunnisa, Hairunnisa, Maharani, Septya

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 4 (2016): November 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

This paper aims to conduct a comparative analysis of appropriate methods between Tsukamoto and Sugeno fuzzy method in solving optimization problems approximate amount of procurement. The analysis is done by comparing the average value of the relative error in the calculation results forecasts procurement of data procurement of goods belonging to a company. The results of the analysis is implemented in an application program and obtained value of the average relative error Tsukamoto method by 39.67% and amounted to 50.39 % of Sugeno method. Based on these results, Tsukamoto method is more appropriate and recommended to solve optimization of the approximate number of procurement.

Web service development as mechanism of interoperability between the Academic Information System (AIS) Mulawarman University and the Higher Education Data Base (PDDIKTI) using academic data from Department of Computer Science and Statistic at Faculty of Mathematic and Natural Science

Cahyadi, Dedy

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 4 (2016): November 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Higher Education Data Base (Pangkalan Data Perguruan Tinggi/PDDIKTI) is used by policy makers at Directorate of Higher Education at the Ministry of Research and Higher Education in order to improve the quality, relevance, affordability and equal access to higher education in which sustainable. In fact, the data still need improvements due to several causes such as invalidity, overlapping, and updating problems.  The management of PDDIKTI does not guarantee the validity of data, therefore universities should carry out regular updates to ensure data displayed on PDDIKTI website (http://forlap.ristekdikti.go.id) is legitimate for users who use the data such as HRD staff of companies in recruitment process.Mulawarman University has connected an Academic Information System (AIS) with PDDIKTI by using web service to process data updates. However, the process itself has a long mechanism and resulted in a slow progress because it must pass through several administrative stages ranging from the department, faculty and university. In the process, validity of the data is still on the department’s responsibility.This research has conducted a Proof of Concept (POC) on the use of web service to process data updates on PDDIKTI through AIS. It is carried out only at department level, consequently, the workflow of updates can become shorter and faster. Based on this result, there are two urgent needs that can be proposed to academic policy makers in campus: improved workflow and an updated standard of procedure in data updates from AIS to PDDIKTI.Higher Education Data Base (Pangkalan Data Perguruan Tinggi/PDDIKTI) is used by policy makers at Directorate of Higher Education at the Ministry of Research and Higher Education in order to improve the quality, relevance, affordability and equal access to higher education in which sustainable. In fact, the data still need improvements due to several causes such as invalidity, overlapping, and updating problems.  The management of PDDIKTI does not guarantee the validity of data, therefore universities should carry out regular updates to ensure data displayed on PDDIKTI website (http://forlap.ristekdikti.go.id) is legitimate for users who use the data such as HRD staff of companies in recruitment process.Mulawarman University has connected an Academic Information System (AIS) with PDDIKTI by using web service to process data updates. However, the process itself has a long mechanism and resulted in a slow progress because it must pass through several administrative stages ranging from the department, faculty and university. In the process, validity of the data is still on the department’s responsibility.This research has conducted a Proof of Concept (POC) on the use of web service to process data updates on PDDIKTI through AIS. It is carried out only at department level, consequently, the workflow of updates can become shorter and faster. Based on this result, there are two urgent needs that can be proposed to academic policy makers in campus: improved workflow and an updated standard of procedure in data updates from AIS to PDDIKTI.

Hybrid Methods of Cipher-text and RSA Cryptographic Algorithm Using Classical Vigenère

Anraeni, Siska, Herdianti, Herdianti, Mursyid, Mursyid

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 2 (2016): May 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Maintaining the security of messages is a very important thing both within an organization and the personal especially in the age of information technology today. In order to the sent message does not fall into the one’s hands who are not interested, then encryption should be created to maintain the confidentiality of a message remains secure. Classical cryptography method using Vigenère Cipher and RSA (Riverst Shamir Adleman) is one of securing methods which will be used. In this case, the initial process is doing encryption on Vigenère cipher that produces a temporary ciphertext. The temporary ciphertext will be a plaintext on the RSA algorithm and then encrypted again to produce the actual ciphertext. Merging these two methods produces a ciphertext that is more powerful and difficult to solve.

Mobile Packet Internet Groper (Moping) Application and Database Connection for Testing the QoS of Internet Services

Budiman, Edy, Hairah, Ummul

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 3 (2016): August 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Optimizing the Quality of Experience (QoE) of mobile applications over cellular networks requires detailed knowledge of the underlying network and it is performance. Parameters of interest are, besides the signal strength and availability of technologies, the Round-trip Time (RTT) and available throughput of individual cells at a given location. This information is generally not readily available. Therefore, an Android application measuring the cellular network performance was developed. This demonstration shows the Mobile Ping (Moping) Network App, being implemented to provide visual feedback of the measured network quality to the users. The Mobile Packet Internet Groper (Moping) enables mobile application developers to characterize the data delivery performance of cellular data networks as delivered to mobile devices. Mobile application developers need to know a range of network performance characteristics, including latency, jitter, throughput, and network timeout delays. Of particular importance is how these values vary in different network provider, network technology, and mobile device combinations. To enable data collection from users across the range of technologies available, the application of Moping offers a lightweight measurement architecture that can be deployed on a wide range of Android-enabled mobile devices. The essential effect of mobile systems is that link quality becomes extremely variable, often in a random manner, although some parts of this effect can be predicted, or statistically modelled. The main QoS parameters – reliability of connection, bandwidth, latency and jitter are all affected by mobility, both during and between connections.

Implementation of Certificateless Signcryption Based On Elliptic Curve Using Javascript

Wahid, Abdul, Mambo, Masahiro

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 3 (2016): August 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Certificateless Cryptography (CLC) provides a new approach in addressing problems in encryption techniques. In CLC, any string can be used as a public key so that the data can be secured without using a certificate. In addition, the CLC concept makes it possible for the revocation of keys with a certain time limit. Another emerging concept is the signcryption which is a cryptographic system that combines the digital signature system and encryption system into one logical step thus requiring a smaller computational cost compared to the regular signature-then-encryption system. Elliptic Curve Cryptography (ECC) is a cryptography that uses elliptic curve which offers the same security but with smaller key sizes thus requiring less memory and computation. In this paper, we attempted to combine the three concepts to obtain all the advantages possessed by each concept without compromising system security. In the implementation we used client-based programming namely javascript which can reduce the workload of the server in order to achieve system security. We compared the computational cost of our scheme with some previous schemes and analyzed the security property of our scheme.

Performance of Assessment Relationship between Characteristics Student Learning Style and Lecturers Teaching Method Using Fuzzy Inference System: A Case Study Department of Information Technology State Polytechnic of Samarinda

Rihartanto, Rihartanto, Bramanto W. P., Arief

International Journal of Computing and Informatics (IJCANDI) Vol 1, No 2 (2016): May 2016
Publisher : International Journal of Computing and Informatics (IJCANDI)

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Abstract

Baseline characteristics of students’ knowledge in the concept of learning technology is required. One is the students learning style characteristics including attitudes, cognitive and psychomotor or skills. Then, characteristics of learning styles based approach sensory preferences, including visually, auditory, and kinesthetic or learning by doing/movement and touch. In this study, methods of teaching as a learning process consisting of multimedia-based teaching, lectures, demonstrations, problem solving, discussion, exercises (drill), case studies, frequently asked questions, and experiment. Three types of questionnaire consisting of the distribution characteristics of student learning styles, the tendency of students learning methods, and the tendency of lecturers teaching methods have been implemented. In order to determine the grade level of each questionnaire with grade visual (V), auditory (A), kinesthetic (K), auditory-kinesthetic (AK), and visual-auditory (VA) have been exploited. The results showed that the relationship between these three variables has yielded a value of 68.2%. It means that the FIS method could be used in order to assess the performance relationship.