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AIAA Science and Technology Forum and Exposition (AIAA SciTech Forum)

作者： Palar, Pramudita Satria Parussini, Lucia Bregant, Luigi Shimoyama, Koji Izzaturrahman, Muhammad Faiz Baehaqi, Febrian Ahmad Zuhal, Lavi Rizki Inst Teknol Bandung Fac Mech & Aerosp Engn Jl Ganesha 10 Java Indonesia Univ Trieste Dept Engn & Architecture Piazzale Europa 1 I-34127 Trieste Italy Tohoku Univ Inst Fluid Sci Sendai Miyagi 9808577 Japan Inst Teknol Bandung Aerosp Engn Grad Study Program Jl Ganesha 10 Java Indonesia

ISBN: (纸本)9781624106316

In this paper, we propose the use of the composite kernel function (CKL) technique for the multi-fidelity Kriging (MFK) surrogate model. The principle of MFK-CKL is to automatically learn the best combination of single kernels in both low- and high-fidelity Kriging to create a more accurate Kriging model. The combination is in the form of a weighted sum in which the weights are treated as extra hyperparameters. We implement the CKL into the recursive co-Kriging approach. It is relatively straightforward to do the same for other MFK approaches. Demonstrations on a set of non-algebraic problems show the high efficacy of MFK with CKL, outperforming the single kernel approach in terms of approximation error. Besides, the use of CKL successfully eliminates the non-trivial process of manual kernel selection in multi-fidelity Kriging.

关键词： Kriging

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Inclusivity of virtual tourism destinations: An immersive netnographic study of Indonesian wheelchair users in virtual nature-based destinations

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Annals of Tourism Research Empirical Insights 2025年第1期6卷

作者： Perangin-Angin, Rosliyana Tavakoli, Rokhshad Kusumo, Camelia Mura, Paolo Study Program in Tourism Gunadarma University Indonesia Department of Tourism Sultan Qaboos University Masqat Oman School of Architecture Building and Design Taylor's University Subang Jaya Malaysia College of Communication and Media Sciences Zayed University Abu Dhabi United Arab Emirates

Exclusion-inclusion theory has received attention in various disciplines in the actual world. However, whether and how virtual tourism experiences can affect the degree of exclusion-inclusion for people who use wheelchairs has not been discussed. Driven by an interpretivist paradigm, this study employed immersive netnography. Ten Indonesian were observed and interviewed to understand their virtual nature-based experiences. They used virtual reality head month and explored a few virtual destinations. The findings suggest that the combination of virtual tourism destinations' aspects can influence the inclusivity of their travel experiences. A better understanding of these findings will aid in developing inclusive tourism for wheelchair users through virtual tourism. This paper provides insights into the current and future scope of inclusive e-tourism. © 2025 The Authors

关键词： Exclusion-inclusion theory Immersive Netnography Inclusive e-tourism Person who uses a wheelchair Virtual tourist behaviour

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Heat transfer between occupied and unoccupied zone in large space building with floor-level side wall air-supply system

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建筑模拟（英文版） 2020年第6期13卷 1221-1233页

作者： Xinqi Yang Haidong Wang Chunxiao Su Xin Wang Yi Wang School of Environment and Architecture University of Shanghai for Science and Technology Shanghai 200093 China Advanced Study Program National Center for Atmospheric Research Boulder CO USA Research Applications Laboratory National Center for Atmospheric Research Boulder CO USA

The air supply terminal located at the floor level attached to side-wall is widely used in large space buildings, leading to potential energy saving as well as significant vertical thermal stratification. The cooling load calculation of such system is challenging, especially the calculation of the load gained from unoccupied zone. This paper adopts experiment and computational fluid dynamics (CFD) methods to study the heat transfer upward and downward across the stratified surface in large space building with floor-level side wall air-supply system. Five experimental cases with different heat source power and exhaust airflow ratios are performed to study their effects on the indoor thermal environment. We investigate the same cases in CFD and verify the result of vertical temperature distribution and cooling load components. As a critical parameter in evaluating the thermal stratification environment of large space building, the inter-zonal heat transfer coefficient Cb is emphatically discussed. By comparing the Cb value obtained through the two methods, the accuracy of the microscopic method is verified by the heat balance method. The results show that the Cb value is mainly affected by the zonal division and air distribution, but less prominently by exhaust airflow ratio and heat source in the occupied zone.

关键词： large space building thermal stratification CFD simulation floor level air supply inter-zonal heat transfer coefficient

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From clothing to culinary industries: creativity in the making of place

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CREATIVE INDUSTRIES JOURNAL 2020年第2期13卷 117-136页

作者： Hanan, Himasari Hemanto, Dwitya Inst Teknol Bandung Urban Design Study Program Sch Architecture Planning & Policy Dev Bandung Indonesia Creat Ind Urban Designer & Planner Bandung Indonesia

Creative clusters in many Western and Asian cities are predominantly established through policy-making and the involvement of government and private institutions. This paper investigates another way creative industries emerge, whereby individual initiatives of creative young people transform a colonial residential quarter into creative clusters. The creativity of young people has brought life and diversity to a mono-functional urban area by seizing new opportunities for small-scale business practices. The paper is based on a field survey and mapping of 80 clothing and culinary industries at Trunojoyo quarter in Bandung, Indonesia, that contributed to the nomination of Bandung as UNESCO City of Design in 2015. The young people of Bandung exhibit tactical strategies in the emergence of creative clusters and exercise informal processes and social networks as catalysts for growing creative industries. They reveal how youthful energy and creativity within everyday life brings about something that is rational and practical in creating an experiential place and making an historical quarter into a place of high economic performance.

关键词： Bandung creative cluster clothing industries culinary industries placemaking social networks young people

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Association of Hospital Discharge Against Medical Advice and Coded Housing Instability in the US

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JOURNAL OF GENERAL INTERNAL MEDICINE 2023年第13期38卷 3082-3085页

作者： Ryus, Caitlin R. R. Janke, Alexander T. T. Kunnath, Nicholas Ibrahim, Andrew M. M. Rollings, Kimberly A. A. Yale Sch Med Dept Emergency Med New Haven CT 06510 USA Univ Michigan Inst Healthcare Policy & Innovat VA HSR&D Ctr Study Healthcare Innovat Implementat Ann Arbor MI USA Univ Michigan Dept Surg Ann Arbor MI USA Univ Michigan Ctr Healthcare Outcomes & Policy Ann Arbor MI USA Univ Michigan Taubman Coll Architecture & Urban Planning Ann Arbor MI USA Univ Michigan Inst Healthcare Policy & Innovat Hlth & Design Res Fellowship Program Ann Arbor MI USA

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Experimental Evaluation on Palm Oil and Sesame Oil-based Resin Properties as Core Sandwich Material for Lightweight Ship Structure

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INTERNATIONAL JOURNAL OF ENGINEERING 2022年第9期35卷 1690页

作者： Tuswan, T. Sari, E. N. Ismail, A. Prabowo, A. R. Univ Diponegoro Dept Naval Architecture Semarang Indonesia Univ Billfath Dept Mech Engn Lamongan Indonesia Indonesia Def Univ Ship Machinery Study Program Belu Indonesia Univ Sebelas Maret Dept Mech Engn Surakarta Indonesia

Research on lightweight material on ship structure has taken giant steps during the last decade. One reason is that shipping activities have increased and, therefore, the possibility of increasing the carrying cargo capacity in a realistic way using advanced lightweight material. This article summarizes a research investigation regarding the experimental tests of vinyl ester bio resin material using palm oil and sesame oil based on Lloyd's Register (LR) standard. Several tests were conducted, including density, water absorption test, Fourier transformed infrared test (FTIR), scanning electron microscope (SEM), and mechanical tests to evaluate the effect of 2-10% addition of vegetable oils on mechanical properties. The influence of the addition of vegetable oils is successfully characterized using physical measurements, which indicate the possible formation of a polymer blend to increase in elongation value. Mechanical testing shows that adding vegetable oils causes a decrease in average density, hardness, bending strength, and tensile strength. The bending strength decreases about 9.20 - 47.06% for 2-10% palm oil addition and 5.33 - 42.40% for sesame oil addition. Moreover, vegetable oil causes a tensile strength decrease of about 5-18.75% on palm oil and 3.75-13.75% on sesame oil. As summarized, bio resin based on sesame oil has better mechanical behavior with the oil addition of 4-8% fulfills all Lloyd's Register criteria.

关键词： Bio resin Palm Oil Sesame Oil Core Sandwich Ship Structure

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Prunus cerasifera Ehrh. and Prunus persica (L.) Batsch: potential fruit plants for rural economic revitalization in Nepal

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GENETIC RESOURCES AND CROP EVOLUTION 2025年 1-17页

作者： Khadka, Dipak Luo, Binsheng Baral, Bikash Pieroni, Andrea Deng, Jiakang Li, Fei Fei Bhatta, Sijar Cui, Dafang Shi, Shi South China Agr Univ Coll Forestry & Landscape Architecture Guangdong Key Lab Innovat Dev & Utilizat Forest Pl Guangzhou 510642 Peoples R China Golden Gate Int Coll Environm Sci Program Kathmandu 44600 Nepal Environm Protect & Study Ctr ENPROSC Kathmandu 44600 Nepal Jiangxi Prov & Chinese Acad Sci Lushan Bot Garden Lushan 332900 Peoples R China Univ Helsinki Fac Biol & Environm Sci Organismal & Evolutionary Biol Res Programme Helsinki 00970 Finland Univ Gastron Sci Piazza Vittorio Emanuele II 9 I-12042 Pollenzo Italy Tishk Int Univ Dept Med Anal Erbil 44001 Iraq China Natl Bot Garden North Garden Beijing 100093 Peoples R China Tribhuvan Univ Cent Dept Environm Sci Kathmandu 44600 Nepal

Fruit resources represent significant assets for national dietary sustenance and rural economic revitalization. Nepal, possessing ample natural diversity, has abundant fruit resources, notably Prunus cerasifera Ehrh. and Prunus persica (L.) Batsch, distributed from the eastern to western regions of the country. We assessed the ethnobotanical significance and current utilization of these species and proposed a sustainable usage roadmap. An ethnobotanical survey was conducted across 54 districts of Nepal, encompassing data from 775 respondents. P. cerasifera and P. persica were utilized in 8 and 12 major categories, respectively. The total use reports for P. cerasifera were 1441, and P. persica was 1867. The fidelity level was highest (100%) for fruit use for P. persica and 99.4% for P. cerasifera. The generalized linear model (GLM) Poisson showed that P. persica was significantly dependent on age and occupation;however, P. cerasifera was not dependent on these variables. We conclude that to optimize the utilization of P. cerasifera and P. persica, product development initiatives such as juice, wine, and alcohol production should be prioritized. These value-added products can enhance economic benefits while ensuring the sustainable use of these species.

关键词： Economy Ethnobotany Optimize use Product development

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Biogas : Alternative energy on supporting environmentally coffee shop in Samosir Island 5

Biogas : Alternative energy on supporting environmentally co...

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5th Friendly City International Conference: Enhancing Culture, Community and Environment, FCIC 2019

作者： Ginting, Nurzainah Tarigan, Atifah N Royba, Inqilab Akbar Animal Production Study Program Faculty of Agriculture Universitas Sumatera Utara Medan20155 Indonesia Architecture Program Study Faculty of Engineering Universitas Sumatera Utara Medan20155 Indonesia Toba Lake and Sustainable Tourism Working Group Universitas Sumatera Utara Medan20155 Indonesia

Samosir Island is one of tourism destination in Indonesia and there was an increasing of coffee shop number. This research tries to investigate how much financial profit received by coffee shop if it use biogas as a new energy source. This research had been conducted from April to June 2018. Research parameter were production costs, income, revenue, Benefit Cost Ratio, Revenue Cost Ratio, Return On Investment, Break Even Point, and identify opportunities, threats, strengths and weaknesses by SWOT analysis to identify whether the community of Samosir is willing to use biogas. The results of financial analysis namely production cost IDR 1,964,500;income of IDR.4,360,000;revenue of IDR. 2,303,000;B/C (%) was 79.7;R/C (%) was 151;ROI (year) of 1.6;BEP Price was IDR. 5,302;BEP Production of 361 glass. By SWOT Analysis it was known that development strategies are taken place include socialize biogas technology, benefits of biogas on energy, fertilizer and soil quality to the community, benefits of biogas in saving fuel purchases and providing biogas stock devices on biogas group. The result showed that biogas was worthy of being used as a new energy source on the coffee shop business on Samosir Island. © Published under licence by IOP Publishing Ltd.

关键词： Biogas

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Rapid tsunami inundation forecast using pre-computed earthquake scenarios and offshore data

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COASTAL ENGINEERING 2023年第1期184卷

作者： Weniza, Weniza Gusman, Aditya Riadi Puspito, Nanang Tyasbudi Rahayu, Harkunti Pertiwi Harig, Sven Hanifa, Nuraini Rahma Gunawan, Indra Nurokhim, Arif Setiawan, Yosi Sriyanto, Sesar Prabu Dwi Masat, Ali Daryono, Daryono Adi, Suko Prayitno Karnawati, Dwikorita Inst Teknol Bandung Fac Min & Petr Engn Geophys Engn Study Program Bandung Indonesia Agcy Meteorol Climatol & Geophys Jakarta Indonesia GNS Sci 1 Fairway Dr Avalon Lower Hutt New Zealand Inst Teknol Bandung Fac Min & Petr Engn Global Geophys Res Grp Bandung Indonesia Inst Teknol Bandung Sch Architecture Planning & Policy Dev Reg & City Planning Bandung Indonesia Helmholtz Ctr Polar & Marine Res Alfred Wegener Inst Bremerhaven Germany Natl Res & Innovat Agcy Res Ctr Geol Disaster Bandung Indonesia Inst Teknol Bandung Geophys Engn Study Program Bandung Indonesia

We present an approach to enhance the development of Near-Field Tsunami Inundation Forecasting (NearTIF). We combine the inversion method with the original NearTIF to obtain a more accurate tsunami source, utilizing Ocean Bottom Pressure Gauge (OBPG) data. We use Mw 8.5 hypothetical earthquake located in the Java megathrust to assess the optimum time window of OBPG data for inversion with a smoothing factor. The 15-min time series data obtained a good-fit fault slip distribution, indicated by high correlation and low RMSE. Additionally, Green's function based on tsunami waveform predictions is the substitute for the low-resolution forward modeling part of the original NearTIF to acquire inundation forecasts with a reduced computational time. The 330 pre-computed tsunami scenario, using a non-linear numerical model, is employed for matching and shifting between the predicted and pre-computed waveform in the 15 virtual observation point along the Kulon Progo coast, the area of interest, using five hypothetical sources varying from Mw 8.5 to Mw 8.9. The Aida number (K) implies that the developed NearTIF gives accuracy in the acceptable range (0.6 < K < 1.4) in less than 2 min after the tsunami recorded in the OBPG. The technique presented in this paper could provide near real-time and accurate inundation forecast.

关键词： Inverted tsunami waveform Tsunami warning Inundation forecast NearTIF

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The spectrum of city park service scope: Case study of Lapangan Puputan Badung and Lapangan Puputan Margarana Denpasar-Bali 2

The spectrum of city park service scope: Case study of Lapan...

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2nd International Conference on Smart City Innovation

作者： Kohdrata, N. Suartika, G.A.M. Krisnandika, A.A.K. Yusiana, L.S. Dharmadiatmika, I.M.A. Landscape Architecture Study Program Faculty of Agriculture Udayana University Bali Indonesia Architecture Study Program Faculty of Engineering Udayana University Bali Indonesia

This research aims to find the spectrum of a park service scope from two city parks in Denpasar, a densely populated city. The city parks in study are Lapangan Puputan Badung and Lapangan Puputan Margarana as city public facilities of Denpasar - Bali that is said to improve citizen quality of life and environment as well. However, this research focuses to see how city parks in Bali serve their users. This study uses a survey research method. Sample of respondents are chosen using accidental sampling technique with questionnaire as media of data collection. Data series include, users' age, frequency of visit, activities, and domicile. Research findings are analysed spatially and descriptively as well. Result shows that most visitors are young people who spend time mostly for exercising and other recreational activities. It is also interesting to see that both city park users are regular visitors. They visit the parks at least 1 to 2 time per week and spend 1 to 2 hours in there. The parks users mostly come from densely populated areas. That shows the importance of city parks as complement to a city. However, as a city that going to smart city, ICT has not been recognized much. As conclusion, the spectrum of city parks service scope of Denpasar still ranging in traditional functions of public green open space. A city park serves a man-made nature-like place for people to get refresh within an urban landscape setting. © Published under licence by IOP Publishing Ltd.

关键词： Parks

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