IJIIS: International Journal of Informatics and Information Systems
The IJIIS is an international journal that aims to encourage comprehensive, multi-specialty informatics and information systems. The Journal publishes original research articles and review articles. It is an open access journal, with free access for each visitor (ijiis.org/index.php/IJIIS/); meanwhile we have set up a robust online platform and use an online submission system to ensure the international visibility and the rigid peer review process. The journal staff is committed to a quick turnaround time both in regards to peer-review and time to publication.
Articles
147 Documents
<![CDATA[An Alliance-Based Term Project in Software Quality Courses: a Lesson Learned ]]>
<![CDATA[Hsueh, Nien-Lin]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 1, No 1: September 2018 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v1i1.83
<![CDATA[Software testing education has become important in the field of software engineering education. In the previous software quality assurance course, students were asked to form teams to complete a term project. By working on term projects, students can learn programming skills and test skills in a practical way. However, from the experience of the last 3 years, we found that students only did unit testing and system performance testing well but did poorly in integration testing. In addition, students do not yet have the concept of system decomposition and integration, even though it is important during software development. In this paper we report our improvements to software testing course design - an alliance-based approach. In the term project, students are organized into teams and many teams are grouped into alliances. Each alliance has a team of masters building game platforms for others. The master team must define the application interface to interact with other gaming teams, and they must perform integration tests based on the defined interface. In this paper we report our experiences and student feedback on the educational approach.]]>
<![CDATA[A Data Mining Practical Approach to Inventory Management and Logistics Optimization ]]>
<![CDATA[Bambang Pujiarto]]>;
<![CDATA[Mukhtar Hanafi]]>;
<![CDATA[Arief Setyawan]]>;
<![CDATA[Asti Nur Imani]]>;
<![CDATA[Eky Rizky Prasetya]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 4, No 2: September 2021 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v4i2.109
<![CDATA[The latent demand to optimize costs and customer service has been fostered in the current economic situations, characterized by high competitiveness and disruption in supply chains, placing inventories as a vital sector with significant potential to implement improvements in firms. Inventory management that is done correctly has a favorable impact on logistics performance indexes. Warehousing operations account for around 15% of logistics expenditures in terms of dollars. This article employs a method based on the Partitioning Around Medoids algorithm that incorporates, in a novel way, the application of a strategy for locating the optimal picking point based on cluster classification, taking into account the qualitative and quantitative factors that have the greatest impact or priority on inventory management in the company. The results obtained with this model improve the routes of distributed materials based on the identification of their characteristics such as the frequency of collection and handling of materials, allowing for the reorganization and expansion of storage capacity of the various SKUs, moving from a classification by families to a cluster classification. This article shows a suggestion for a warehouse distribution design using data mining techniques, which uses indicators and key qualities for operational success for a case study in a corporation, as well as an approach to improve inventory management decision-making.]]>
<![CDATA[Comparison of Min-Max normalization and Z-Score Normalization in the K-nearest neighbor (kNN) Algorithm to Test the Accuracy of Types of Breast Cancer ]]>
<![CDATA[Henderi Henderi]]>;
<![CDATA[Tri Wahyuningsih]]>;
<![CDATA[Efana Rahwanto]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 4, No 1: March 2021 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v4i1.73
<![CDATA[The purpose of this study was to examine the results of the prediction of breast cancer, which have been classified based on two types of breast cancer, malignant and benign. The method used in this research is the k-NN algorithm with normalization of min-max and Z-score, the programming language used is the R language. The conclusion is that the highest k accuracy value is k = 5 and k = 21 with an accuracy rate of 98% in the normalization method using the min-max method. Whereas for the Z-score method the highest accuracy is at k = 5 and k = 15 with an accuracy rate of 97%. Thus the min-max normalization method in this study is considered better than the normalization method using the Z-score. The novelty of this research lies in the comparison between the two min-max normalizations and the Z-score normalization in the k-NN algorithm.]]>
<![CDATA[A High-Performance Data Accessing and Processing System for Campus Real-time Power Usage ]]>
<![CDATA[Chou, Sheng-Cang]]>;
<![CDATA[Yang, Chao-Tung]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 3, No 3: December 2020 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v3i3.98
<![CDATA[With the flourishing of Internet of Things (IoT) technology, ubiquitous power data can be linked to the Internet and be analyzed for real-time monitoring requirements. Numerous power data would be accumulated to even Tera-byte level as the time goes. To approach a real-time power monitoring platform on them, an efficient and novel implementation techniques has been developed and formed to be the kernel material of this thesis. Based on the integration of multiple software subsystems in a layered manner, the proposed power-monitoring platform has been established and is composed of Ubuntu (as operating system), Hadoop (as storage subsystem), Hive (as data warehouse), and the Spark MLlib (as data analytics) from bottom to top. The generic power-data source is provided by the so-called smart meters equipped inside factories located in an enterprise practically. The data collection and storage are handled by the Hadoop subsystem and the data ingestion to Hive data warehouse is conducted by the Spark unit. On the aspect of system verification, under single-record query, these software modules: HiveQL and Impala SQL had been tested in terms of query-response efficiency. And for the performance exploration on the full-table query function. The relevant experiments have been conducted on the same software modules as well. The kernel contributions of this research work can be highlighted by two parts: the details of building an efficient real-time power-monitoring platform, and the relevant query-response efficiency for reference.]]>
<![CDATA[Electronic Banking in Opinion of Young Customers in Poland ]]>
<![CDATA[Elzbieta Wyslocka]]>;
<![CDATA[Dorota Jelonek]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 2, No 3: December 2019 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v2i1.88
<![CDATA[The paper presents theories regarding the characteristics of consumer behavior of young customers on the basis of relevant literature and development of electronic banking in the world and in Poland. Then the methodology of conducted study and results have been described. At the end there is a summary, which presents recommendations for both practitioners and academics. Aim of this article is to determine the attitude of young consumers towards electronic banking based on a survey among the group of selected students. This seems especially important because current young consumers are increasingly better educated and are able to determine their needs very precisely. They access information quickly which enable them to determine whether the offer meets their expectations-banking services are no exception. Results of studies may help both the bank management to formulate marketing strategies to promote virtual banking and scientists in the study of virtual banks and virtual organizations in general.]]>
<![CDATA[Analysis of the Effect of Website Sales Quality on Purchasing Decisions on e-commerce Websites ]]>
<![CDATA[Deden Hardan Gutama]]>;
<![CDATA[Izzatul Umami]]>;
<![CDATA[Pujo Hari Saputro]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 4, No 1: March 2021 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v4i1.79
<![CDATA[Both Web-based information infrastructure and marketing activities are dealt with by business-to-consumer electronic commerce. Centered on information systems and marketing literature, this review suggests a research model to explain the effect on consumer loyalty of the dimensions of website quality (system quality, information quality, and service quality). In order to verify the validity of the calculation model, confirmatory factor analysis was performed, and the structural model was also examined to investigate the correlations hypothesized in the study model. In this study, by comparing the Hyperparameter class & Catboost class we can find a number of distributions of individual absolute errors which can be considered as a fairly important factor in the analysis of sales quality on e-commerce websites.]]>
<![CDATA[Server Structure Proposal and Automatic Verification Technology on IAAS Cloud of Plural Type Servers ]]>
<![CDATA[Yamato, Yoji]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 1, No 2: December 2018 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v1i2.104
<![CDATA[In this paper, we propose a server structure proposal and automatic performance verification technology which proposes and verifies an appropriate server structure on Infrastructure as a Service (IaaS) cloud with bare metal servers, container based virtual servers and virtual machines. Recently, cloud services have been progressed and providers provide not only virtual machines but also new metal servers and container based virtual servers. However, users need to design an appropriate server structure for their requirements based on 3 types quantitative performances and users need much technical knowledge to optimize their system performances. Therefore, we study a technology which satisfies users' performance requirements on these 3 types IaaS cloud. Firstly, we measure performances of a bare metal server, Docker containers, KVM (Kernel based Virtual Machine) virtual machines on OpenStack with virtual server number changing. Secondly, we propose a server structure proposal technology based on the measured quantitative data. A server structure proposal technology receives an abstract template of OpenStack Heat and function / performance requirements and then creates a concrete template with server specification information. Thirdly, we propose an automatic performance verification technology which executes necessary performance tests automatically on provisioned user environments according to the template.]]>
<![CDATA[The Relation Between Hiring Queuers and Emotions - A Pre-Study of Experiment Design ]]>
<![CDATA[Liao, Ruo-Yin]]>;
<![CDATA[Liang, Chih-Chin]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 3, No 3: December 2020 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v3i1.94
<![CDATA[Consumers considering whether or not to queue make their decisions based on queuing size and the expecting waiting time. If a consumer is frustrated because he / she cannot know how long will wait, he / she will quit from a Consumers who are frustrated because they do not know how long they must wait will quit a queue or ask someone for help if the good is worthy to pay more money to own. If a good is worth waiting to purchase, a consumer will chose waiting or buying the privilege to get the good. However, a long wait causes customers to have negative feelings about the queue. Frustration also has a substantial effect on customer loyalty to a good. Therefore, the relationship between perceived waiting time and paying for queuers to buy the good is worth studying. Frustration is a moderating effect that is also worth studying. In the formal study, to make the frustrating emotion, the authors asked all participants to have a contest before they can take the tickets to enter a queue for taking the ticket to a famous concert in Taiwan. The questions used in the contest had different levels of difficulty. However, the difficulty of the questions must be verified before the formal experiment. Therefore, the 60 participants in this pilot study were asked 40 questions in history, mathematics, and Chinese to find the most difficult ten questions and the less difficulty ten questions for the formal test.]]>
<![CDATA[Development and Evaluation of Management Information Systems for Christian Workers Movement Multi-Purpose Cooperative ]]>
<![CDATA[M. Bernardo, Jose Carlos]]>;
<![CDATA[E. Fidelino, John]]>;
<![CDATA[A. Lamigo, Christian Noel]]>;
<![CDATA[B. Santelices, Aaron Patrick]]>;
<![CDATA[P. Ringula, Rex]]>;
<![CDATA[G. Ventura, Mary Grace]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 1, No 1: September 2018 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v1i1.84
<![CDATA[The Christian Workers Movement Multi-Purpose Cooperative (CWMMC) is a financial institution that caters to more than a thousand members in rendering timely financial assistance by making use of manual transaction processing. The company has encountered a number of problems pertaining to its services, strategic office location, and data / information management. This study was conducted in an attempt to design and develop a software system that would make loaning processes and other company-related business transactions simple, convenient, reliable, and dependable. A management information system was developed for and implemented at CWMMC. The software was found acceptable to the end-users and technical experts. Hence, it was recommended that the software be used continuously.]]>
<![CDATA[The Effect of E-Learning as One of the Information Technology-Based Learning Media on Student Learning Motivation ]]>
<![CDATA[Andi Widiyanto]]>;
<![CDATA[Nugroho Agung Prabowo]]>;
<![CDATA[Nuryanto Nuryanto]]>;
<![CDATA[Mochammad Ircham Nashif Amarullah]]>;
<![CDATA[Arsyad Soni Nuruzzaman]]>
<![CDATA[ International Journal of Informatics and Information Systems Vol 4, No 2: September 2021 ]]>
Publisher : <![CDATA[International Journal of Informatics and Information Systems ]]>
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DOI: 10.47738/ijiis.v4i2.108
<![CDATA[The teaching and learning process is a process that involves participants and educators. The teaching and learning process will be successful if there is interaction between the two parties. Along with the development of information technology, especially the internet in information systems, the teaching and learning process has utilized information technology both from elementary, secondary and higher education levels. Especially for higher education which requires students to be more independent and active in the learning process, information technology is considered very helpful for students. As one of the information technology-based universities, STIKOM Bali utilizes e-learning to support the learning process. Lecturers and students are required to use and utilize e-learning as a means to share information related to lecture materials, assignments, quizzes, discussion forums and others. One of the goals of implementing e-learning in lectures is to increase student learning motivation so that learning achievement will be better. It is also hoped that students will be more interested in the lecture process. One of the things that affect student learning motivation is learning media. The learning media referred to in this study is e-learning learning media. The long and stable application of e-learning at STIKOM Bali is thought to be one of the drivers of student learning motivation. The research method used in this research is problem definition, data collection, data analysis and conclusion drawing. Based on the results of hypothesis testing with H1 hypothesis regression with a significance value of 0.000 and a t-count of 4.015 proven, so that it is concluded that according to STIKOM Bali students e-learning affects student learning motivation.]]>
