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  • Comparative Analysis of K-Means and K-Medoids Algorithms in Determining Customer Segmentation Using RFM Model

    Comparative Analysis of K-Means and K-Medoids Algorithms in Determining Customer Segmentation Using RFM Model

    Authors: Nita Mirantika ; Estiko Rijanto

    DOI: –

    Abstract

    A poultry farm company has customers across various regions and needs customer segmentation for a more effective marketing strategy. This research aims to perform the company customer segmentation through a comparative analysis using K-Means and K-Medoids algorithms. Customer segmentation was performed using the Cross-Industry Standard Process for Data Mining (CRISP-DM) technique on three distinct sales datasets. We selected the attributes of the datasets based on the Recency-Frequency-Monetary (RFM) model. The number of clusters was established utilizing the Elbow approach, and the assessment of clustering was carried out using the Davies-Bouldin Index (DBI) methodology. Through a comparative examination, it becomes evident that the superiority of the K-Means algorithm is demonstrated in comparison to the K-Medoids algorithm. This outcome is derived from the observation that the DBI value for K-Means is lower than the DBI value for K-Medoids across the three sales datasets. Based on these results, it is recommended to determine customer segmentation using the K-Means algorithm. We obtained four customer segments: superstar, typical, newcomer, and dormant. The superstar segment has the most recent recency value, the highest frequency, and the most significant monetary value. The results of this customer segmentation became a consideration for the company in making marketing strategies that are right on target. This study can be used as a reference for current issue in the poultry farm company for supporting and preparing food, supports current issue in the sustainable development goals (SDGs). © School of Engineering, Taylor’s University.

    Author Keywords

    Customer segmentation; Frequency; K-Means; K-Medoids; Monetary model; Recency

    This article can be accessed at https://www.scopus.com/pages/publications/85176387578?

  • Impact of Knowledge Management, IT, Community Service,

    Impact of Knowledge Management, IT, Community Service,

    and University Branding on Education Quality

    Authors: Umi Narimawati ; Marliana Budhiningtias Winanti ; Syahrul Mauluddin ; Dadang Munandar ; Denok Sunarsi

    DOI: 10.15549/jeecar.v10i6.1505

    Abstract:

    This study aimed to investigate and comprehend the effects of knowledge management adoption, information technology utilization, and community service programs on university branding and their subsequent impact on the overall quality of education in private tertiary institutions (PTS) in the West Java and Banten region. The research design was quantitative, using a survey approach and a simple random sampling method to gather data from 226 lecturers from private tertiary institutions in West Java and Banten. PLS software version 3.0, based on the Partial Least Squares (PLS) approach, was used to analyze the data. The results showed that knowledge management implementation had no discernible impact on university branding, as shown by a t-statistic value of 1.594 and a P-value of 0.112. © 2023, Institute of Eastern Europe and Central Asia. All rights reserved.

    Author Keywords:

    community service program; implementation of knowledge management; quality of education; university branding; utilization of information technology

    This article can be accessed at https://www.scopus.com/pages/publications/85178284931?

  • Interaction Design of Number Counting Operation Learning Media

    Interaction Design of Number Counting Operation Learning Media

    for Mildly Mentally Retarded Children

    Authors: Alif Finandhita ; Giovani Octaviana

    DOI: 10.1109/INCITEST59455.2023.10397032

    Abstract:

    Intellectual Disability is a term for people who have below average intellectual and cognitive abilities. They can be recognized by their slower thinking and learning processes compared to other children of their age. Mildly mentally retarded children only have an IQ score of 50/55 to approximately 70. The most common difficulty faced by them at school is learning mathematics. One of the materials is number counting operations. The learning process for mathematics in the classroom is currently still carried out conventionally, either verbally or using blackboard media. This causes children with special needs to be less interested in learning mathematics because they have difficulty understanding the material provided. Based on these problems, an interaction design is needed to learn mathematics interactively, especially for number counting operation materials. The objective of this research is to facilitate the children to learn number operations through learning media with interactive design. The design process is carried out using the User Centered Design method where the needs of children will be the main focus. The process starts from understanding the context of use which includes problem analysis and the current learning process, up to the evaluation process. The native prototype is the final result of this research. The evaluation results through the qualitative usability test show that the success rate of children’s interaction using the prototype that have been made by completing the tasks given is 92%. © 2023 IEEE.

    Author Keywords:

    human computer interaction; interaction design; learning media; mild mentally retardation; usability

    Indexed Keywords:

    Engineering controlled terms

    Learning systems; User centered design

    Engineering uncontrolled terms

    Cognitive ability; Intellectual ability; Intellectual disability; Interaction design; Learn+; Learning Mathematics; Learning media; Learning process; Mild mentally retardation; Usability

    Engineering main heading

    Human computer interaction

    This article can be accessed at https://www.scopus.com/pages/publications/85185199422?

  • Autonomous Monitoring with Facial Expression Recognition

    Autonomous Monitoring with Facial Expression Recognition

    and Gamification to Support Blended Learning Model

    Authors: Indra Kurniawan ; Yeffry Handoko Putra

    DOI: –

    Abstract:

    Blended learning model is a popular learning model and is trusted by many educational institutions in the world as a more effective model. However, it has several challenges and weaknesses, namely the lack of monitoring and assessment of learning activities during online sessions or asynchronous sessions. This study aims to build an autonomous monitoring system using facial expression recognition and gamification methods to support the learning process with a blended learning model. The result of this research is a design and implementation of an autonomous monitoring system that displays real-time monitoring reports with the concept of gamification. Real-time reports can be used by teachers as one of the assessment points for students. In addition, the applied gamification concept has motivated students to take the distance learning process seriously and quickly because they are competing to get points. © School of Engineering, Taylor’s University.

    Author Keywords:

    Autonomous monitoring; Facial expression recognition; Gamification

    This article can be accessed at https://www.scopus.com/pages/publications/85148345218?

  • The Impact of Learning Effectiveness in Post-Pandemic Architecture Studios

    The Impact of Learning Effectiveness in Post-Pandemic Architecture Studios

    Authors: Seftiyandi Kurniawan ; Syahrul Gunawan ; Tri Widianti Natalia

    DOI: 10.1063/5.0176200

    Abstract:

    This study aims to find out how effective students are in taking post-pandemic architecture courses, by assessing study hours, time, and the weight of the lessons received to be able to follow the architectural learning method which is considered very heavy by some students selected during the pandemic. The existence of pandemic and rapid technological developments makes changes in the learning and teaching process carried out as effectively as possible boldly, this gives rise to new phenomena and phenomena in the learning and teaching process, one of which is the phenomenon of overwork or crowd culture. Consciously or unconsciously, the phenomenon of the cultural bustle can cause students to experience mental health problems. The method used is the method of analyzing data collected through questionnaires to determine the level of effectiveness of learning and teaching architectural education by taking quantitative data on architecture students using a questionnaire method using a Likert scale. The results showed that unconsciously students in the Architecture major adopted a bustling culture which was considered more effective to be able to follow the Architecture learning method, especially during the pandemic. The effectiveness of the application of learning methods to Architecture students can be seen in the student’s abilities, behavior, and student motivation. © 2023 Author(s).

    This article can be accessed at https://www.scopus.com/pages/publications/85177554133?

  • The Analysis Of Application Information System As E-Business Go-Baby Application Of Child Care In Bandung

    The Analysis Of Application Information System As E-Business Go-Baby Application Of Child Care In Bandung

    Authors: Andri Sahata Sitanggang, R. Fenny Syafariani

    DOI: 10.1166/jctn.2019.8614

    Abstract

    The purpose of this research is to provide solution by approach through analysis about the problem by homemakers who have children. The condition of being happens is limited have time in childcare are responsible for a woman and limited childcare in Bandung City. As for research, methodology is based on method action research, in the first year the interview, observation, documentation, and processing statistical data. Research methodology will produce calculation statistical housewives data, the problems, then solution in solving problems of application design mobile of GO-BABY is reservations online for child care based on android, and iOS, and does that which is the integration data to centralized system. © 2019 American Scientific Publishers.

    Author keywords

    Android; Application; GO-BABY; iOS; Online

    This article can be accessed at https://www.scopus.com/pages/publications/85078992554

  • Coral Reef Cultivation through Online Donations

    Coral Reef Cultivation through Online Donations

    Authors: R. Fenny Syafariani, Andri Sahata Sitanggang, Novrini Hasti

    DOI: 10.1166/jctn.2019.8615

    Abstract

    The amount of damage to coral reefs caused by human activities has an enormous impact on human life, then with that there must be conservation of reefs to preserve coral reefs in Indonesia, involve the Department of Fisheries and Maritime must play an important role in providing solutions to these problems. The role of the Institute can be done by conducting the cultivation and supervision of coral reefs. The cultivation can be done by making online donations to coral reefs. That way the community will participate in preserving coral reefs. However, facilities for serving online donations are not yet available, then this research is focused on making the system. The system will serve a donation system through the purchase of coral reefs and implanted by a diver agent at a specified location of coral reefs. This donation system was created using a structured approach in analyzing problems that occur in making the system to be built. The existence of this system will facilitate the community to participate and increase public awareness in cultivating coral reefs. © 2019 American Scientific Publishers.

    Author keywords

    Coral Reef; Donation; Online; System

    This article can be accessed at https://www.scopus.com/pages/publications/85078968983

  • Smart Monitoring of Nutrient Content, pH Condition and Temperature in Vegetable Leaf Grown through Deep Flow Technique

    Smart Monitoring of Nutrient Content, pH Condition and Temperature in Vegetable Leaf Grown through Deep Flow Technique

    Authors: Agis Abhi Rafdhi, Asep Bayu Dani Nandiyanto, Dedeng Hirawan, Eddy Soeryanto Soegoto, Senny Luckyardi, Raiswati Untsa Mega

    DOI: 10.48317/IMIST.PRSM/morjchem-v9i4.29764

    Abstract

    This research aims to develop a hydroponic farming system by utilizing the Internet of Things (IoT) as a medium for monitoring the quality of plant nutrition, pH Condition, and Temperature. The research method used quantitative analysis of plant nutrient content measurements for 26 days with two treatments, namely indoor and outdoor. We used several vegetable leaves (i.e. Bok Choy, Water Spinach, and Lettuce) as these plants are easy to grow, have a low risk of withering, and have a relatively short planting time until harvest (26 days). The findings presented that by implementing IoT in agriculture, the nutritional content of plants can be measured accurately, from pH, plant nutrients (ppm), to temperature. With the monitoring system, we can detect whether the nutrient content is deficient or excessive. The system can also maintain optimum conditions in nutrient content quality, pH condition, and temperature. In conclusion, this research can be used as a reference for developing an optimal hydroponic monitoring system. © 2021. All Rights Reserved.

    Author keywords

    Hydroponic; Internet of Things; Smart monitoring; Vegetables Leaf

    This article can be accessed at https://www.scopus.com/pages/publications/85123265168

  • Research Trends in Farming System Soil Chemical: A Bibliometric Analysis using VOSviewer

    Research Trends in Farming System Soil Chemical: A Bibliometric Analysis using VOSviewer

    Authors: Dedeng Hirawan, Dina Oktafiani, Tegar Ahmad Fauzan, Senny Luckyardi, Nursuriati Jamil

    DOI: 10.48317/IMIST.PRSM/morjchem-v10i3.33145

    Abstract

    This study was conducted to determine (1) the growth of the number of scientific publications in the field of soil chemical farming systems, (2) the productivity of researchers, (3) the number of publications by field/subject, and (4) a map of the development of publications based on keywords. This research used descriptive quantitative methods with bibliometric analysis. Data collection was carried out by searching through the Google Scholar database with the keywords “farming system soil chemical” with the categories “authors, publication name, article title, keywords in the period 2017–2021 using Publish or Perish 8 software. In addition, VOSviewer software was used to analyze the development maps’ publications. The study results show that the growth of scientific publications in the field of soil chemical farming systems shows a decline, and the highest decline occurred in 2021, namely as many as 21 documents (2.1%). In conclusion, the most publications published in 2017 were 420 publications (40.8%). The subjects with the most studies were soil, system, chemical, production, studies, farmers, and agriculture. The connections between topics are grouped into ten clusters, as seen through network visualization. This research is expected to assist researchers in determining the theme to be studied and can also be a reference for research on soil chemistry. © 2022. Moroccan Journal of Chemistry. All Rights Reserved.

    Author keywords

    Farming system soil chemical. publish or perish; Vosviewer

    This article can be accessed at https://www.scopus.com/pages/publications/85132712801

  • Development of Electronic Portfolio-Based Assessment Strategies in Chemistry Learning to Assess Students’ Concept Mastery

    Development of Electronic Portfolio-Based Assessment Strategies in Chemistry Learning to Assess Students’ Concept Mastery

    Authors: Nahadi, Wiwi Siswaningsih, Pupung Purnawarman, Asri Indriani, Tri Lestari, Nuryana, Chepi Nur Albar

    DOI: 10.48317/IMIST.PRSM/morjchem-v10i1.31714

    Abstract

    This study aims at developing an electronic portfolio-based assessment strategy as valid and reliable assessment for learning on colloidal system material to measure student concept mastery. This study used a Design-Based Research (DBR) with a 4D development model that is carried out until stage 3 (Define, Design, and Development). The participant in this study were 10 students of class XI in one of High Schools in Bandung who were involved in the limited trial phase. The concept mastery ability measured in this study used the Revised Bloom’s Taxonomy framework. However, the researcher only used the cognitive level of applying (C3) and analyzing (C4) based on the analysis of Core Competence and Basic Competence in the syllabus for colloidal system material. The tasks developed in this electronic portfolio assessment consist of three tasks, namely a concept map of the types of colloids; papers on the properties of colloids, the application of the properties of colloids in life, and how to make colloids; and a practical simulation report on the colloidal properties of the Tyndall effect. The results showed that the instrument was valid with a CVR value of 0.6 – 1.0 and reliable with a Cronbach Alpha value of 0.679 – 1.000. Based on the results of a limited trial of the developed electronic portfolio-based assessment strategy, it can measure student concept mastery on colloidal system material. Overall, the average level of student concept mastery is categorized as good. With details in the category of very good (30%), good (50%) and sufficient (20%). © 2022

    Author keywords

    Colloidal System; Concept Mastery; Electronic Portfolio Assessment

    This article can be accessed at https://www.scopus.com/pages/publications/85131324288