UMA - Open Access Journals (Universitas Medan Area)
Not a member yet
5228 research outputs found
Sort by
What Shapes User Expectations? Exploring Reliability, Simplicity, and Security in Digital Payments
Full text linkAs digital payment systems become increasingly integrated into everyday transactions, understanding user expectations and perceptions has become critical for service innovation and adoption. This study investigates how perceptions of benefits, convenience, and risk influence user expectations of digital payment systems among university students. Using a quantitative approach, data were collected via questionnaires from 96 accounting students at the University of Muhammadiyah Makassar, selected from a population of 2,770 using Slovin’s formula. SmartPLS 3.0 software was employed to analyze the structural model through Partial Least Squares Structural Equation Modeling (PLS-SEM). The findings reveal that perceptions of benefits, convenience, and risk all have significant positive effects on digital payment expectations. Additionally, the study examines the moderating role of user experience duration. Results show that user experience significantly moderates the relationship between benefit perception and expectations, as well as between risk perception and expectations, but does not moderate the relationship between convenience perception and expectations. These insights underscore the importance of trust and familiarity in shaping digital payment expectations, particularly among experienced users. The study contributes theoretically by integrating trust and perception frameworks, and methodologically by offering a structured approach to analyzing expectation formation in digital financial services
The Principle Pacta Sunt Servanda: The Alliance of Sahel States and Treaty Termination with France
Full text linkThe concept of Pacta Sunt Servanda is crucial for maintaining the stability of the international legal system, as it requires agreements to be respected and upheld as legally binding. However, the changing socio-political dynamics between former colonial powers and post-colonial states create difficulties in directly implementing this principle. This study explores this principle focusing on Mali, Burkina Faso, and Niger (AES)'s ability to terminate the security and economic treaties with France unilaterally. Adopting a mixed method, which entails a triangulation between doctrinal and case study research approaches, this study investigates the sustainability of this international law principle in the face of Africa's awakening in the changing global power landscape. The aim is to uncover the patterns and motivations behind these states' disengagement decisions. The findings reveal that while Pacta Sunt Servanda supports respecting treaties, exceptions based on changes in circumstances may provide legal grounds for termination. The conclusion emphasizes that while the AES's unilateral terminations present economic and legal challenges, specific conditions could justify such actions within the framework of international law, hence the need for a careful and comprehensive interpretation of treaty obligations and rights
Simulasi Sistem Produksi Robochop Dasar dengan ARENA
Full text linkDalam membuat produk terkadang diperlukan suatu perangkat lunak (tools) untuk menjelaskan proses yang terjadi, menganalisis proses dalam pembuatan produk dan bahkan mengusulkan suatu perbaikan dimana perlu. Simulasi komputer merupakan salah satu perangkat lunak (tools) yang lazim dipakai. ARENA merupakan salah satu piranti lunak (tools) yang dapat dipakai untuk menjalankan simulasi sistem produksi. Dalam penelitian ini, simulasi digunakan untuk menggambarkan sistem produksi Robochop Dasar. Dengan menggunakan simulasi ARENA, proses produksi Robochop Dasar dapat dianalisis dengan lebih mudah dan jelas, membantu dalam pemahaman durasi dan tahapan pembuatan produk tersebut. Hasil dari simulasi ini memberikan wawasan yang berguna, seperti identifikasi area yang memerlukan perbaikan untuk meningkatkan efektivitas dan efisiensi dalam pengelolaan sumber daya produksi. Selain itu, simulasi juga memungkinkan perbandingan antara hasil eksperimen dan hasil simulasi, yang dapat memberikan informasi tentang sejauh mana keduanya berbeda. Dengan demikian, penggunaan simulasi komputer dapat membantu dalam perencanaan dan pengambilan keputusan, serta mendukung upaya perbaikan berkelanjutan dalam sistem produksi Robochop Dasar
Implementasi Failure Mode and Effect Analysis (FMEA) dan Fault Tree Analysis (FTA) dalam Mengevaluasi Kegagalan Mesin Cetak Offset Toko Type 810
Full text linkPerawatan pada mesin adalah kegiatan yang penting untuk mempertahankan mutu produk yang dihasilkan. Mesin cetak offset toko merupakan mesin yang digunakan pada laboratorium cetak di Prodi Teknik Grafika. Mesin ini memiliki peran penting dalam proses pelaksaan praktek dan produksi produk grafika. Berdasarkan observasi mesin tersebut mengalami permasalahan. Penelitian ini bertujuan untuk memeriksa dan memberikan usulan pemeliharaan dengan menggunakan metode FMEA dan FTA. Implementasi metode diharapkan dapat memberikan solusi yang lebih efektif dalam menangani masalah pemeliharaan Hasil analisis FMEA berdasarkan nilai RPN tertinggi adalah plate cylinder dan Impression Cylinder dengan nilai 48 %. Komponen kritis ini diprioritaskan dalam tindakan perbaikan. Rekomendasi perbaikan untuk plate cylinder adalah memastikan pemasangan plate dilakukan dengan benar dan presisi dan usulan perbaikan untuk komponen Impression Cylinder adalah melakukan kalibrasi silinder secara berkala
Damage Analysis and Repair of a Small-Scale ORC (Organic Rankine Cycle) Prototype Turbine During Testing
Full text linkThis research discusses the damage analysis and repair of an Organic Rankine Cycle (ORC) prototype turbine that experienced failure during testing. The damage occurred due to a collision between the rotor blades and stator blades, causing the rotor blade to break. The primary cause was identified as a manufacturing error in the turbine stator, where the flange holes were misaligned with the shaft. Additionally, the use of improper locking flange bolts and loose fitting on the coupling and stator shaft contributed to this issue. The research methodology included failure analysis using Process Failure Modes and Effects Analysis (PFMEA) to identify potential failures and prioritize corrective actions. The results indicate that adjustments in the manufacturing process, the use of high-precision measurement technology, improved material quality control, and better technician training can significantly reduce the risk of future failures. Furthermore, evaluating operational conditions and conducting regular inspections are recommended to ensure optimal turbine performance. With the implementation of these corrective actions, the ORC turbine prototype is expected to operate more reliably and efficiently during testing and use. This research is expected to make a significant contribution to enhancing the reliability and efficiency of ORC system turbines, and provide guidance for the future development and testing of turbines
Meningkatkan Stimulasi Anak Usia Dini pada Olifant School Yogyakarta melalui Indra Penglihatan dan Peraba
Full text linkIn every child's developmental process, parents must consistently accompany and support them for optimal growth. However, with the changing times, many mothers are now compelled to work outside the home to meet family needs. The phenomenon of mothers working outside the home can have detrimental effects on the family, especially children in their crucial developmental phase from ages 0 to 6. In response to this concern, there is a need for childcare and schools that provide an environment tailored to children's needs, helping to stimulate their brains. Olifant School is an educational and childcare service that focuses on sensory-based child stimulation. This research aims to assess the extent to which the Olifant School building applies architecture and human senses, particularly in the aspects of vision and touch. The method used is library research in the form of literature studies from various sources which are then explained according to existing parameters, which are then analyzed according to existing parameters to draw conclusions. The results of this study indicate that Olifant School in Yogyakarta is one of the structures built based on human senses, specifically vision and touch
Kajian Penerapan Arsitektur Biomimikri (Studi Kasus Bangunan Eastgate Centre)
Full text linkThis research aims to examine the application of biomimicry architecture through a case study of the Eastgate Center building. Biomimicry architecture explores natural principles to design efficient and sustainable solutions in the built environment. A case study of the Eastgate Centre, a commercial building located in Harare, Zimbabwe, provides an opportunity to evaluate how biomimicry principles were applied in the design and construction of the building. The research method involved an in-depth literature review of the concept of biomimicry, structural and functional analysis of the Eastgate Center building, as well as interviews with architects and related parties. The results of this research provide insight into the effectiveness of applying biomimicry architecture in the context of commercial buildings and its contribution to energy efficiency, temperature regulation and environmental sustainability. These findings are expected to contribute to further understanding of the potential of biomimicry architecture in supporting the construction of more environmentally friendly and efficient buildings
Alih Fungsi Pedestrian oleh Pedagang Kaki Lima di Jalan Gatot Subroto Medan Petisah
Full text linkThe rapid development of infrastructure in downtown Medan has led to the emergence of business, trade, and educational centres in various areas. As a metropolitan city, the City öf Medare serves as at centre of trade, offices, government, and industry. Public activities to reach such centres of activity can be carried out by motor transport or on foot. Good pedestrian facilities are essential for improving safety, comfort, as well as supporting an active lifestyle and a sustainable urban environment. However, many pedestrian lanes in the city of Medan, on Gatot Subroto Street, Central Petisah, have shifted their fumetians to other places of activity such as five-foot merchant kiosks and vehicle parking. The study aims to analyze the influence of five-foot merchants on the comfort of pedestrians in the use of pedestrian lanes on Gatot Subroto Street. The research method is carried out with a qualitative descriptive approach through field observations, questionnaires and in-depth interviews with road users and five-foot traders located from the Bukopin Bank Fountain Waterfront to the front of the Plaza Mall Field Fair
Doktrin Kelalaian Kontribusi (Contributory Negligence) Terhadap Tanggung Jawab Bank Atas Kerugian Nasabah Akibat Kesalahan Atau Kelalaian Pegawai Bank
Full text linkThis study aims to examine in depth the application of the doctrine of contributory negligence in the context of bank legal liability for losses experienced by customers due to errors or negligence committed by bank employees. The issues raised focus on the extent to which banks can be exempted from legal liability by postulating the existence of contributory negligence from the customer, as well as the relevance of the application of this doctrine in the current legal system and banking practices in Indonesia. This study uses a normative legal approach with a literature study method and analysis of laws and regulations, especially referring to the provisions of Article 10 of the Financial Services Authority Regulation Number 22 of 2023 concerning Consumer and Community Protection in the Financial Services Sector. The results of the study show that in practice, banks as financial service business actors must still be responsible for customer losses arising from the negligence of their employees, regardless of whether or not there is a contribution of error from the customer. In addition, the doctrine of contributory negligence which is "all or nothing" is considered no longer relevant to be applied in a modern accountability system that emphasizes the principles of justice and consumer protection. Therefore, a review of the provisions that adopt the principle of contributory negligence in Indonesian banking regulations is urgent
The Effect of Motivation and Competence on The Work Productivity of Oil Palm Nursery Employees Palm Oil Research Center Nusantara Plantation Research
Full text linkThe purpose of this study is to analyze the relationship between work motivation and work competence in increasing the work productivity of oil palm nursery employees. The study area was determined by the purposive method (intentionally), The sample used in this study was an employee of the PPKSNusantara research Sawit Coconut Nursery. The method of determining the sample used in the study is the census sample method. The data are analyzed by descriptive analysis by collecting, processing and describing the data that has been collected followed by SEM tests. The parameters tested are the relationship and influence of work motivation (MK) on work productivity, and work competency variables (KK) on work productivity. The results showed that there variable work motivation (MK) has an insignificant positive relationship to work productivity. Thus,work motivation (MK) does not affect the productivity ofoil palm nursery employees at PPKS Nusantara research, because in the company there is a lack of motivation to arouse the motivation of nursery employees, so that they can work according to the company's target. In the variable work competence (KK) has a significant positive relationship with the work productivity of oil palm nursery employees at PPKS Nusantara research. Thus,theWork competency variable (KK) affects work productivity, because in the palm oil breeding division PPKS Nusantara research has employees who are in accordance with the expertise and potential possessed by each employee, in order to be able to work in accordance with the company's targets