Petra Christian University, Surabaya, Indonesia: Peer-Reviewed Scientific e-Journal
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Ragam Hias Majapahit sebagai Alternatif Desain Motif
No full textMasa kejayaan sampai keruntuhan Majapahit meninggalkan beragam budaya berwujud cerita dan ragam hias yang tersebar di beberapa daerah, khususnya di Mojokerto, Jawa Timur. Ragam hias peninggalan kerajaan majapahit sebagai kekuatan budaya yang khas dan harus dilestarikan, salah satunya dengan cara menelaahnya, sehingga ragam hias tersebut dapat diadaptasi ke dalam produk-produk sekarang. Dengan meneliti artefak tersebut dan menghasilkan beberapa desain motif, maka motif tersebut dapat diterapkan pada berbagai desain perhiasan, motif kain, dan lain lain. Telaah digunakan metode kualitatif dengan hasil, antara lain: beberapa ragam hias majapahit yang akan dikelompokkan menjadi tiga, yaitu: ragam hias utama, ragam hias isin-isin dan ragam hias pengisi. Lambang kerajaan Majapahit dan beberapa ragam hias lain berbentuk geometris dan organik sebagai perwujudan dari buah Maja (asal nama kerajaan Majapahit), banyak ditemui di ragam hias peninggalan kerajaan Majapahit. Komposisi desain motif akan diwujudkan dengan tiga teknik menurut teori dari Welianto. Beberapa desain motif tersebut dapat diterapkan dalam pembuatan produk, antara lain : pola motif pada kain dengan teknik batik dan motif pada desain perhiasan
Effect of Engine Rotation on Mechanical Water Pump and Microcontroller-Based Electric Water Pump for Liquid-Cooled Motor Engine on Coolant Temperature
No full textA liquid-cooled motor's cooling system is essential in maintaining engine performance. This study compares mechanical and electric water pumps based on microcontrollers to improve cooling efficiency. This study aims to measure the influence of the two types of pumps on engine temperature. This study uses an experimental method, installing the two types on machines with liquid cooling systems. In this study, thermostat components are also used. Measurements are made on the temperature of the coolant at various engine revolutions (RPM). The results showed that the electric water pump significantly affected the temperature of the coolant. At the coolant temperature, the electric water pump with thermostat obtains the highest coolant temperature at 4500 RPM engine speed of 80.6°C, while the mechanical water pump is 84.25°C. In the thermostat-less test, the electric water pump obtained the highest temperature and coolant discharge of 62.75°C, while the mechanical water pump achieved a temperature of 64.88°C
Pengembangan Quality Function Deployment dengan Model Optimasi Multi-Kriteria
No full textDalam upaya meningkatkan kepuasan pelanggan, proses desain produk harus secara efektif mampu menangkap dan menerjemahkan harapan dan kebutuhan pelanggan. Quality Function Deployment (QFD) adalah metode yang sering digunakan untuk membantu proses ini, tetapi implementasi QFD konvensional terkadang tidak optimal dalam mengakomodasi berbagai kriteria keputusan yang kompleks. Oleh karena itu, penggunaan metode Multi Criteria Decision Making (MCDM) seperti Analytic Hierarchy Process (AHP), VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR), dan Decision Making Trial and Evaluation Laboratory (DEMATEL) penting untuk meningkatkan efektivitas analisis QFD. AHP digunakan untuk memprioritaskan kebutuhan pelanggan berdasarkan minat relatif, sedangkan VIKOR membantu dalam menentukan solusi kompromi terbaik antara beberapa alternatif desain. DEMATEL, di sisi lain, memetakan hubungan sebab-akibat antara berbagai kriteria desain atau persyaratan teknis, sehingga membantu memahami interaksi yang lebih dalam dalam elemen desain. Kombinasi ketiga metode ini memungkinkan desainer produk untuk lebih tepat dalam menangkap ekspektasi pelanggan, sekaligus memberikan solusi desain yang optimal bagi produsen, baik dari segi kualitas, biaya, maupun efisiensi
TECHNOLOGY LEADERSHIP IN INDONESIAN JUNIOR HIGH SCHOOLS DURING THE POST-COVID ERA: A CASE STUDY OF SPIRITUAL DIMENSIONS
No full textCOVID-19 in Indonesia necessitated a shift from traditional face-to-face learning to technology-based distance learning. This transition also redefined the role of school principal who must lead change and work in new ways. This study aims to explore the new role of the principal as a technology leader and develop a technology leadership model in learning in the new normal era. Employing a qualitative approach with a single case study method, the study involved 20 participants, including 5 principals, 5 vice principals, 5 IT coordinators, and 5 subject teachers from five public junior high schools (SMP Negeri) in Surabaya, Indonesia.. The findings study show that school principal has a key role in keeping the school functioning well in the new normal era. This findings highlight the latest model of technology leadership in education by developing 5 dimensions of technology leadership from NETS-EL 2018 into 6 dimensions. The spiritual dimension makes technology leaders and teachers are more effective in leading schools during and after COVID-19. These findings specifically contribute to the development of a technology leadership framework and generally complement existing leadership theories
Effects of Urban Characteristics on Traffic Accidents
No full textThis study aimed to examine the effects of urban planning, road network, and other urban related characteristics on road traffic accidents. Amman, the capital of Jordan, which consists of 22 urban districts, was taken as a case study. A cross-sectional data on traffic accidents of different types, urban planning, road network, passenger- and vehicle-kilometers of travel, public transport accessibility, and topographic characteristics were collected. Multivariate regression analyses were performed to develop statistical relationships that may help city planners and traffic engineers to set safety policies and regulations for safe urban environment. The results of analyses indicated that the increase in vehicle-kilometers of travel, road and intersection densities, and percentage of mixed land-use were significantly increasing all types of accidents in each urban district. Also, the results indicated that population density, availability of public transit lines along primary and collector streets, accessibility to public transit services, and school density were significantly related to the pedestrian accident density
Coordination Improvement in Inventory Management for Electricity Distribution Materials
No full textElectricity is a fundamental necessity. Its demand is characterized by fluctuation and broad geographic dispersion, requiring distribution units of electricity companies to be prepared to serve customer needs across all areas. The growing demand also necessitates expanding distribution networks. Establishing new connections for customers requires various materials, among which power cables are among the most crucial. However, procuring and managing these materials involves multiple stakeholders, leading to inventory management complexities. This study aims to enhance coordination in power cable inventory management by analyzing how improved coordination influences procurement costs through simulation. This study utilizes system dynamics method to understand the system of inventory management and the interactions among its elements. The existing inventory management was simulated and compared with a coordination policy scenario. The coordination policy yields better cost outcomes by managing internal coordination between two divisions, efficiently changing the use of budget and cost related to inventory. These insights can guide company management to apply the policy and enhance inventory performance for primary electricity distribution materials
Outside-In and Inside-Out Perspectives: An Analysis of ESG’s Social Dimension in Indonesian Air Navigation Company
No full textThe increasing quality issues of sustainability reports in general include several important aspects that can affect the credibility and usefulness of the report. In this context, the materiality of information enhances the relevance and transparency of the company's disclosures. This study examines the implementation of social materiality perspectives at the Indonesian Air Navigation Company within the Environmental, Social, and Governance (ESG) principles framework by integrating the outside-in and inside-out perspectives. Utilizing a materiality perspective, this research supports organizations in preparing disclosures of essential information within sustainability reports. The research uses a qualitative method, utilizing document review and semi-structured interviews with key stakeholders to explore ways to disclose outside-in and inside-out perspectives with sustainability reporting. The findings show that integrating social components into a company's ESG framework highlights its approach to materiality. The company measures its operational activities against various external requirements, embodying an outside-in perspective that reflects how external factors affect its operations. The company's materiality is in line with the outside-in perspective that takes into account investor considerations and financial risks; this also shows the use of the POJK 51 / POJK.03 / 2017 framework to adjust to the company's needs. Meanwhile, the company continues to allocate resources for social initiatives that improve stakeholder welfare, which represents an inside-out materiality perspective where internal capabilities are utilized to overcome operational pressures