Petra Christian University, Surabaya, Indonesia: Peer-Reviewed Scientific e-Journal
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Performance Analysis of Eccentrically Braced Frames (EBF) using Metallic Yielding Damper (MYD) with Hysteretic Steel Damper (HSD) Type
Eccentrically Braced Frames (EBFs) are earthquake-resistant steel structures with excellent shear capacity and ductility. During earthquakes, the EBF link yields first, protecting other structural elements. Traditionally, the link is integrated with the main beam and separated by bracing. However, if the link is damaged, replacing the entire beam becomes necessary. To address this, a vertical link design allows for link replacement without altering the beam section. This study evaluates two vertical link options: a Wide Flange (WF) link section and a Hysteretic Steel Damper (HSD) type Metallic Yielding Damper. Results suggest the WF link is preferable due to superior shear capacity and energy dissipation compared to the HSD link. The findings recommend the WF link for vertical link EBFs to optimize earthquake performance
Analisis Pengaruh Brand Identity terhadap Brand Awareness dan Brand Image pada Brand “Menantea”
Seperti yang dilansir dari Badan Pusat Statistik (BPS), statistika produksi teh di Indonesia meningkat sebanyak20,3% dari tahun sebelumnya, yakni 94,1 ton pada tahun 2021 dan 78,2 ton pada tahun 2020. Peningkatan jumlah produksi teh tersebut berkaitan erat dengan meningkatnya penikmat teh di Indonesia. Meningkatnya penikmat teh di Indonesia menarik para brand minuman teh untuk bersaing dalam industri minuman teh, seperti “Menantea”. “Menantea” merupakan sebuah brand minuman yang menjual berbagai varian teh yang didalam racikannya terdapat buah asli. Semakin padatnya persaingan didalam pasar menjadikan brand identity sebagai aset yang diperlukan dalam membentuk brand image dan brand awareness sebuah brand. Hal ini bertujuan untuk membuat brand menonjol dan menjadi pembeda dari kompetitornya. Tujuan penelitian ini adalah untuk mengetahui adanya pengaruh brand identity terhadap brand awareness dan brand image pada “Menantea”. Penelitian ini menggunakan jenis penelitian kualitatif deskriptif yang akan menganalisa elemen-elemen brand dan brand anatomy “Menantea”. Hasil analisa nantinya akan dibandingkan dengan hasil metode penelitian eksperimen yang termasuk dalam metode penelitian kuantitatif. Hasil dari penelitian ini menunjukkan bahwa brand identity memberikan pengaruh pada brand awareness dan brand image pada “Menantea”
Post-pandemic Evaluation on Housing and Its Influence on Future Healthy Housing Preferences
Post-COVID-19 pandemic, the topic of healthy housing continues to develop, one of which is related to the mental health of residents. The purpose of this study is to conduct a post-pandemic evaluation on Indonesian residents' housing satisfaction (HS), frequency of activities (FoA) during quarantine, and residents' future housing preferences (HP) that promote positive mental health. This study also tries to see the causal relationship between the variables influencing certain housing preferences. This quantitative study used an online questionnaire to collect and analyze data quantitatively using multivariate regression analysis. The results showed values for housing preferences were higher than housing satisfaction values. The causal relationships with the strongest influences are FoA daily on HP environmental comfort, HS physical space on HP physical space, and HS acoustic & visual comfort on HP semi-outdoor space. In general, HS acoustic & visual comfort and FoA daily were the most influencing on residents' preferences
Integration of Kansei Engineering and Nudge Based Design Thinking for Patient Comfort in Healthcare Services
Healthcare often struggles to obtain patient comfort and autonomy, leading to confusion, frustration, and dependency on healthcare staff. In addressing this concern, this study is conducted to propose an integrative framework of Kansei Engineering (KE) and Nudge Theory (NT) within the Design Thinking (DT). It is a novel approach called KENT-DT. Utilizing a human-centric design methodology, this study implemented semi-structured interviews and direct observations with hospitalized patients to assess their emotional responses and interactions with existing beds and hospital staff. The data disclosed some critical pain points, including lack of intuitive control, discomfort, and restricted patient autonomy in bed adjustments, which too often led to dependency on hospital staff. To address these issues, this study proposed an improved hospital bed prototype utilizing KE for patient emotional design considerations and NT to subtly encourage positive patient behaviors, such as maintaining ergonomic bed positions to prevent pressured body portions. Some features of the redesigned bed are offered, such as visual cues, intuitive control location, and ergonomic support enhancements. It is to reduce dependency on staff and increase patient autonomy. According to an evaluation by a doctor and a hospital staff member, it has been concluded that there is an expected increase in patient satisfaction and autonomy. This study brings expected implications. It suggests that integrating KE and NT in medical and hospital product design can foster a more patient-centred healthcare experience, encourage speedy recovery, and reduce staff burden. Future study is highly encouraged to implement the prototype of redesigned beds and evaluate the long-term impact of them on patient recovery. The adaptability of patients across diverse healthcare facilities may be considered as well
Axiomatization of Transit Flow Estimation
Transit flows between stations are typically estimated indirectly using fare collecting data rather than through direct measurement. Traditional methods approximate transit flows by adapting Origin-Destination (OD) trip estimation techniques. However, these approaches have two significant limitations. First, transit link flows represent the number of passengers remaining within the transit vehicles between stations, while OD flows specifically represent passengers entering at one station and exiting at another station. Second, traditional methods rely on the assumption that a cost function is necessary without providing mathematical justification. Consequently, there lacks a robust theoretical foundation explicitly tailored for transit flow estimation. This paper addresses this gap by developing an axiomatic framework based on the Ideal Flow Network. Through systematic mathematical derivations, we identify key balance conditions and necessary constraints to achieve more accurate transit flow estimation
Pola Komunikasi Antara Orang Tua dan Siswa Setelah Diterapkannya Pembelajaran Jarak Jauh (PJJ) Saat Pandemi COVID-19
Pembelajaran jarak jauh (PJJ) menjadi solusi yang ditetapkan oleh pemerintah berdasarkan Surat Edaran Nomor 4 Tahun 2020 tentang pelaksanaan pendidikan dalam masa darurat sebagai alternatif dalam dunia pendidikan demi mengurangi penyebaran COVID-19. Pembelajaran jarak jauh ini membuat orang tua dan anak semakin sering berinteraksi karena menjadi sering bertemu di rumah. Siswa melakukan pembelajaran secara daring dan kehilangan waktu intens bersama para guru di sekolah. Sedangkan sebagai siswa kelas 12, para siswa harus mempersiapkan diri untuk berbagai ujian dan pemilihan jurusan kuliah. Penelitian ini bertujuan untuk mengetahui pola komunikasi yang digunakan oleh orang tua dengan siswa kelas 12 setelah diterapkannya Pembelajaran Jarak Jauh. Subjek dalam penelitian ini adalah lima orang tua dan lima siswa kelas 12 yang bertempat tinggal di Jakarta Utara. Penelitian ini menggunakan pendekatan kualitatif dengan metode fenomenologi untuk melihat pengalaman orang tua dan siswa kelas 12 dalam berkomunikasi setelah ditetapkannya pembelajaran jarak jauh. Hasil penelitian ini menunjukkan bahwa pandemi ini membuat anak dan orang tua menjadi lebih dekat dan terbuka, hubungan yang terjalin pun oleh keduanya pun semakin erat. Hasil penelitian juga menunjukkan bahwa 1 keluarga menerapkan pola komunikasi otoriter, 1 keluarga menerapkan pola komunikasi permisif, 2 keluarga menerapkan pola komunikasi demokratis dan 1 keluarga lainnya menerapkan pola komunikasi kebapakan. Kesimpulan yang dapat diambil dalam penelitian ini bahwa tidak adanya perubahan pola komunikasi yang terjadi pada keadaan normal maupun pada saat pandemi. Meskipun diketahui terdapat perubahan emosi dan tingkah laku yang terjadi pada beberapa individu
Voluntary Adoption of Integrated Reporting and Firm Valuation: The Moderating Effect of ESG Performance
This study addresses a research gap by examining the impact of the voluntary adoption of integrated reporting on company value (TOBINSQ) for companies listed on the Indonesian Stock Exchange. A purposive sampling method was used to select the sample, which included companies with available ESG scores from 2018 to 2022 and accessible annual reports for the same period. The final sample consists of 83 companies, totalling 299 observations. Multiple regression analysis was employed to assess the direct effects of integrated reporting and the moderating role of ESG performance (ESGSCORE) on company value. Our findings reveal that integrated reporting positively influences company value and that ESG performance significantly moderates this relationship, enhancing the benefits of integrated reporting. The results underscore the importance for companies to adopt integrated reporting and enhance ESG performance to improve market valuation. The study also suggests that promoting integrated reporting and ESG disclosures can enhance market transparency and accountability. Future research should focus on longitudinal studies, sector-specific analyses, geographical variations, and the role of digital technologies in integrated reporting and ESG performance to provide deeper insights and practical recommendations
Perancangan Kegiatan Kreatif Terapi Seni untuk Meningkatkan Wawasan Resiliensi melalui Pemberdayaan Siswa SMP Kristen Aletheia Surabaya
Kemampuan seseorang untuk tetap tangguh dalam menghadapi dan bangkit dari permasalahan yang terjadi di dalam hidupnya disebut dengan istilah resiliensi (daya juang). Oleh karena itu diperlukan adanya resiliensi (daya juang) yang dimiliki oleh generasi muda. Perancangan ini melibatkan SMP Kristen Aletheia Surabaya sebagai subjek penelitian. Perancangan kegiatan terapi seni ini sebagai sarana regulasi emosi dan pembekalan bagi murid SMP Kristen Aletheia Surabaya. Penelitian ini menggunakan metode kualitatif. Melalui pemberdayaan ini diharapkan murid SMP Kristen Aletheia Surabaya mengetahui pentingnya resiliensi di masa yang akan datang
Vehicle Routing Problem Optimization for Rebar Material Distribution using the Symbiotic Organisms Search Method
The success rate of construction projects depends on subcontractors and material suppliers, especially in ensuring the material delivery to avoid delays and cost overruns. The Vehicle Routing Problem (VRP) addresses transportation management to minimize the distribution costs. This study presents a comparative analysis of three VRP scenarios: the existing case, the Capacitated Vehicle Routing Problem (CVRP), and the Capacitated Vehicle Routing Problem with Time Windows (CVRPTW). The Symbiotic Organisms Search (SOS) method is used to solve the VRP of a building materials supplier in Sulawesi, Indonesia in delivering rebar to 19 locations over 12 weeks while considering the vehicle capacity and the time window constraints. The results show that the SOS method effectively handles the rebar distribution problems with these constraints. The CVRP scenario achieves a total cost saving of Rp 23,263,278 (26.15%), while the CVRPTW scenario saves Rp 6,732,942 (7.57%)