Petra Christian University

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    IMPACT OF WINDOW-TO-WALL RATIO, GLASS VISIBLE TRANSMITTANCE, AND SURFACE REFLECTANCE ON INDOOR ILLUM

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    The growing adoption of window facades in buildings has enhanced the use of daylighting, which has generally been well-received by occupants. However, the effectiveness of daylighting in interior spaces can be influenced by several factors, including the window-to-wall ratio (WWR), glass visible transmittance (VT), and the reflectance of walls, ceilings, and floors. This study investigates how these factors affect indoor average illuminance. To model the indoor lighting environment and adjust these factors, a simulation method using DIALux software was employed. Multiple linear regression analysis was then used to assess the impact of each factor on average illuminance. The results reveal that WWR and VT are the most significant variables, with their increases leading to substantial improvements in illuminance, though the benefits diminish at higher levels. In contrast, ceiling and floor reflectance have minimal effects, with ceiling reflectance being the least impactful. The regression analysis validates the models high predictive accuracy and highlights the critical role of WWR and VT in achieving optimal lighting conditions

    ENHANCING SPARE PARTS SALES BY IMPROVED CUSTOMER SERVICE LEVELS MEASURED BY OTIF (ON-TIME IN-FULL) THROUGH NEW SUPPORT POINTS AND SUPPLY CHAIN DISTRIBUTION DESIGN: A CASE STUDY AT PT XYZ MEDAN BRANCH

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    Ditemukan bahwa tidak ada titik dukungan di wilayah Martabe PT XYZ, yang menyebabkan masalah pada tingkat layanan pelanggan yang diukur dengan OTIF (On-Time In-Full). Situasi ini dapat menunda pengiriman karena jarak yang jauh (367 km atau 12 jam dengan transportasi darat) antara Medan dan Martabe. Rendahnya tingkat OTIF sesuai dengan terbatasnya ketersediaan suku cadang di PT XYZ. Kemampuan perusahaan untuk memenuhi permintaan dengan stoknya adalah ketersediaan suku cadang. Akibatnya, pelanggan membeli dari pesaing dengan suku cadang yang siap di tempat. Studi ini telah merancang titik dukungan baru berdasarkan perkiraan permintaan yang akurat dan penilaian kelayakan proyek berdasarkan Internal Rate of Return (IRR). Hasilnya, titik dukungan baru menjamin ketersediaan suku cadang untuk membuat barang In-Full dan mengurangi waktu tunggu pengiriman untuk membuat barang On-Time. Setelah membangun titik dukungan baru di wilayah Martabe, penjualan meningkat sebesar 74% dan berkontribusi pada pertumbuhan penjualan sebesar 44% di wilayah Meda

    Pengaruh Brand Image, Price Perception, Quality Perception terhadap Purchase Intention Sepeda Motor Merk Honda Wilayah Surabaya

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    Penelitian ini dilakukan untuk mengetahui pengaruh Brand Image, Price Perception, Quality Perception terhadap Purchase Intention sepeda motor Merek Honda wilayah Surabaya. Teknik analisis data yang digunakan peneliti yaitu analisis kuantitatif uji pengaruh dengan menggunakan perhitungan Partial Least Square (SmartPLS). Penelitian ini melibatkan 100 responden calon konsumen sepeda motor Merek Honda. Hasil dari penelitian ini adalah brand image berpengaruh positif dan signifikan terhadap purchase intention sepeda motor Merek Honda, price perception berpengaruh positif dan signifikan terhadap purchase intention sepeda motor Merek Honda, dan quality perception berpengaruh positif dan signifikan terhadap purchase intention sepeda motor Merek Honda. Oleh karena itu perusahaan sepeda motor Merek Honda harus dapat mempertahankan dan bahkan meningkatkan secara positif brand image, price perception, dan quality perception sehingga purchase intention calon konsumen dapat meningkat

    Peran kebijakan dividen terhadap enterprise value perusahaan sektor consumer staples di Indonesia

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    This study aims to analyze the effect of dividend policy on the enterprise value of consumer staples sector companies in Indonesia. This sector was chosen because of its important role in the economy and market stability. The main objective of this study is to identify the extent to which dividend policy can affect enterprise value in this sector. This study uses secondary data from Revinitif. Sample selection was carried out by purposive sampling. The control variables involved are return on assets, business size, and degree of financial leverage. The research method used is panel data regression with a fixed effect model approach. The results of the study show that the amount of dividends distributed does not have a significant effect on enterprise value. However, investors consider the level of return on assets, business size, and degree of financial leverage of the company more when making investment decisions

    PENGARUH VISUAL MERCHANDISING KKV GALAXY MALL SURABAYA TERHADAP REPURCHASE INTENTION DENGAN SHOPPING LIFESTYLE SEBAGAI VARIABEL MODERASI DAN IMPULSIVE BUYING SEBAGAI VARIABEL MEDIASI

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    This research aims to analyze the influence of Visual Merchandising at KKV Galaxy Mall Surabaya on Repurchase Intention, with Shopping Lifestyle as a moderating variable and Impulsive Buying as a mediating variable. Data collection for this research was conducted through direct surveys at KKV Galaxy Mall and online via Line, Whatsapp, and Instagram. A total of 124 respondents were successfully obtained and their data processed. The data analysis technique used was Partial Least Square (PLS). The results of this final research project indicate that Visual Merchandising does not have a significant effect on Repurchase Intention, Visual Merchandising has an effect on Impulsive Buying, Impulsive Buying has an effect on Repurchase Intention, Impulsive Buying significantly mediates the relationship between Visual Merchandising and Repurchase Intention, and Shopping Lifestyle does not moderate the relationship between Visual Merchandising and Repurchase Intention of KKV Galaxy Mall Surabaya customers

    ANALISIS DAMPAK MERGER PT INDOSAT OOREDO TBK (ISAT) DAN PT HUTCHISON 3 INDONESIA (H3I) TERHADAP KINERJA KEUANGAN PERUSAHAAN PT INDOSAT OOREDO HUTCHISON

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    This study examines the impact of mergers on corporate performance, focusing on financial performance. The case of PT Indosat Ooredoo Hutchison is analyzed to determine how mergers affect profitability and efficiency. A qualitative comparative approach is used, analyzing financial data from 2021 and 2023. Key indicators, including Return on Assets (ROA), Return on Equity (ROE), and Net Profit Margin (NPM), are assessed to evaluate performance changes post-merger. The results show a decline in ROA, ROE, and NPM, indicating reduced profitability and inefficiencies post-merger. Higher operational costs and integration challenges hindered expected synergies. Despite business expansion, financial performance weakened, highlighting the need for better merger planning

    Pendekatan Ergonomic Design pada Gedung Audrey and Co di Surabaya

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    Ergonomics is a principle used in designing a space. In its application, ergonomics uses anthropometry as a standard measurement reference so that consumers feel comfortable when using furniture such as tables and chairs. A boutique is a place to sell clothes and other womens accessories such as bags, wallets, necklaces and shoes. The activity in the boutique is choosing and buying clothes, but please note that the boutique requires a fitting room and waiting room. The design in a room becomes uncomfortable if you do not apply design principles to it, especially the size of the cupboard, the size of the sofa and the size of the table, therefore the principles of ergonomics are the main priority in room design. This research aims to find out how the application of ergonomic principles can meet client needs as a whole. The method used has several stages, namely understand, observe, point of view, ideate, prototype, test, storytelling, pilot, and business model. The following stages are the process of designing a design that will be used in designing a boutique

    Optimalisasi Hasil Belajar melalui Pretest dan Posttest Menggunakan Gamifikasi pada Mata Kuliah Bahasa Indonesia

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    This research aims to investigate how effective pretests and posttests with gamification in enhancing student learning outcomes in the Indonesian Language course. Learning Indonesian language is often perceived as less engaging, compulsory, theoretical, and comprising abstract concepts. The researcher involved 152 subjects across four different Indonesian language classes, administering pretests and posttests before and after the material was explained. Two types of gamification were employed: Mentimeter in one class and Quizizz for three classes. The results reveal that all classes demonstrated higher posttest scores compared to their pretest scores. This finding suggests that gamification helps students become more engaged, motivated, focused, and better understand the material, as reflected in improved learning outcomes in Indonesian language course

    Pengembangan Bisnis Lokal Berbasis Komunitas Melalui Coaching dan Mentoring Di PPA Agape Desa Ngunut - Tulungagung

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    Pusat Pengembangan Anak (PPA) Agape merupakan sebuah institusi yang berfokus pada pengembangan anak secara holistik yang bertujuan untuk membebaskan anak-anak dari kemiskinan. Untuk mendukung misi tersebut PPA Agape mencoba untuk membuka beberapa unit usaha yang dijalankan oleh para pekerja dan anak-anak yang di sponsori oleh PPA Agape. Usaha-usaha yang dijalankan oleh PPA Agape yaitu peternakan kambing etawa, penjualan buah-buahan hasil tanam di lahan milik PPA Agape, dan toko kecantikan dan perawatan diri. Beberapa permasalahan yang sedang di hadapi oleh unit-unit usaha kecil ini di antaranya adalah rendahnya product awareness, keterbatasan pemasaran, dan keterbatasan variasi produk yang ditawarkan. Kegiatan pengabdian ini bertujuan untuk membangun strategi awal atau strategi sederhana terkait pemasaran produk unit- unit usaha agar lebih dikenal oleh masyarakat yang lebih luas. Kegiatan dan dukungan yang dijalankan di PPA Agape adalah business coaching and mentoring kepada anak-anak PPA usia 12 tahun ke atas guna memberikan pandangan akan pentingnya berwirausaha, pembuatan akun platform Tokopedia sebagai platform penjualan online untuk produk di salon kecantikan dan pembuatan akun Instagram sebagai platform promosi produk di salon kecantikan yang dijalankan oleh PPA Agape

    AI untuk Pembelajaran: Adaptasi Asesmen di Era AI

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    Berbagi praktik baik dalam mengadaptasi bentuk asesmen pembelajaran yang mengintegrasikan penggunaan AI

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