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Sustainable Hybrid Village: Regeneration of Settlement in Jatinegara, Indonesia

IOP Conference Series: Earth and Environmental science 2020年第1期520卷

作者： T Endangsih B Prayitno A Kusumawanto Programe Study Architecture Faculty of Engineering Universitas Budi Luhur Student Doctoral Program Departement of Architecture and Planning Faculty of Engineering Universitas Gadjah Mada Departement of Architecture and Planning Faculty of Engineering Universitas Gadjah Mada

Over the past few decades, cities have experienced severe social and economic pressures, which have a disproportionate impact on the urban environment. As a result, the quality environment has decreased, which is characterized by increased CO2 emissions and energy operating costs. Sustainable city development is considered as a step to create a pleasant environment for the community. Therefore, this research is essential to do to regenerate settlements in improving urban quality. This study aims to find a model for developing sustainable hybrid settlements in densely populated areas. The research method with the simulation method uses the Urban Modeling Interface device with three parameters. The modeling results obtained a Floor Area Ratio (FAR) value of 0.43 with a total land area of ± 427,233 m2. The FAR value produces an operational energy value of 3,983kwh / m2 / year and an embodied energy value of 216 kWh / m2 / year. This value is very high from 240 kWh / m2 / year as a standard for energy use. The amount of mobility in the aspect of walkability is 21-68, and 21-69 for the value of Bikeability. The results of this simulation indicate that the residential area in Jatinegara is not yet sustainable.

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architecture spatial arrangement of Bajo tribes settlement in Kabalutan Island of Central Sulawesi

Architecture spatial arrangement of Bajo tribes settlement i...

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2017 CITIES International Conference: Multi Perspectives on Peri-Urban Dynamics Towards Sustainable Development

作者： Syam, S. Yudono, A. Wikantari, R. Harisah, A. Laboratory Theory Architecture and Environmental History Behavior Program of Architecture Indonesia City Planning and Design Laboratory PWK Study Program Indonesia Faculty of Engineering Universitas Hasanuddin Makassar Indonesia

Vernacular architecture is a potential phenomenon that capable of generating local theory for settlement arrangement in accordance with the condition of natural environment and local culture which is the development of sustainable architecture. In this research they study the phenomenon of architecture settlement which is focused on spatial layout of Bajo tribe in Kabalutan Island, using phenomenology method. The purpose of this research, to find the concept of spatial layout that underlies the order of Bajo settlements in Kabalutan Island. This research produces a spatial layout based on the concept of ethnic fraternity, integrating with the natural conditions that are adaptations of Bajo people's behaviour. © Published under licence by IOP Publishing Ltd.

关键词： architecture

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Finite element analysis of posterior leaf spring ankle-foot orthosis for tibialis anterior atrophy case

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AIP Conference Proceedings 2022年第1期2663卷

作者： Alfian Pramudita Putra Arief Sofian Hidayat Akif Rahmatillah Pujiyanto Pujiyanto Dinda Cyberputri I. Putu Alit Pawana 1Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 2Biomedical Signals and Systems Research Group Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 3Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya Indonesia 4Department of Rehabilitation and Physical Medicine Dr. Soetomo General Academic Hospital Surabaya Indonesia

Stroke is a neurological disease and is a significant cause of disability throughout the world. Patients with stroke or post-stroke usually still experience interference in walking in the form of a drop foot caused by atrophy of the anterior tibialis muscle, so they cannot perform dorsiflexion. Drop foot disorders can be treated by rehabilitation using Posterior Leaf Spring Ankle-Foot Orthosis (PLS AFO). PLS AFO has the advantage of a higher level of flexibility compared to other AFO types. The primary purpose of this research is to observe the level of resilience based on the influence of AFO thickness. This study uses the finite element analysis of three model variations in the initial contact, midstance, terminal stance, and calf loading phases. The material used in this study was carbon fiber. The simulation will result in the distribution of stress, strain, and deformation values in each AFO model. The simulation results show that AFO resistance is affected by variations in AFO thickness where the increase in strength is proportional to the increase in AFO thickness. The AFO with a thickness of 10 mm is the most suitable for the tibialis anterior atrophy case.

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A Benchmark Model for Predicting Building Energy and Daylight Performance in The Early Phase of Design Utilizing Parametric Design Exploration

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IOP Conference Series: Earth and Environmental science 2021年第1期830卷

作者： Rendy Perdana Khidmat Hiroatsu Fukuda Kustiani Andi Prasetiyo Wibowo Fukuda Laboratory Graduate School of Environmental Engineering The University of Kitakyushu Kitakyushu Japan Architecture Study Program Department of Infrastructure and Regional Technology Institut Teknologi Sumatera Lampung Indonesia Department of Architecture Faculty of Engineering Bandar Lampung University Lampung Indonesia. Department of Architecture Universitas Atma Jaya Yogyakarta Yogyakarta Indonesia.

Along with the enormous impact on computational development in architecture and urban design, the way in approaching the built environment is shifting and intended to look closer to performance and evidence-based design. This development holds promise in handling complex computation to approach desired targeted design goals. However, the implementation of form-finding and design performance optimization still lacks, particularly in Japan's sub-tropical climate. This paper describes the parametric design and design exploration process's implementation through the generative algorithm platform to develop a benchmark model to predict building energy and daylight performance and find possible design solutions from the iteration process during the early phase of the design process. The variables incorporated related to the glazing ratio, the length of the overhang, and building orientation. Grasshopper, a parametric-based plugin that works in Rhinoceros, is used to arrange a parametric definition for the overall experiment. The tools used to investigate the environmental analysis and energy consumption are Ladybug and Honeybee, and the exploration process will be conducted using Design Explorer. The context will be situated in Orio district and uses the EPW file of Kitakyushu city, Fukuoka, Japan. The results of this research furthermore can potentially be a comparison for more dynamic factors.

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The impact of expectation confirmation, technology compatibility, and customer’s acceptance on e-wallet continuance intention

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AIP Conference Proceedings 2021年第1期2329卷

作者： Ira Puspitasari Alvin Nur Raihan Wiambodo Purbandini Soeparman 1Information System Study Program Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia 2Research Center for Quantum Engineering Design Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia

The adoption of e-wallet service is on the rise among Indonesian customers. People use e-wallet because it is convenient, more secured, and offers advantages over physical cash. In line with the growth of e-wallet adoption, the number of e-wallet services in Indonesia has increased to more than 50 providers in 2020. This situation leads to a competitive market in e-wallet service. This study examines key factors affecting customer satisfaction and continuance intention to use e-wallet services and applications based on the integration of Diffusion of Innovations (DOI) theory, Technology Acceptance Model (TAM), and Expectation-Confirmation Theory (ECT). The data collected from 663 participants were analyzed based on structural equation modeling partial least square. The results show that confirmation, perceived ease of use, compatibility, and trialability have positive impacts on customer satisfaction, and perceived usefulness, satisfaction, and habit contribute to continuance intention on e-wallet. In addition, customers prioritize security over ease of use when using e-wallet and consider it part of e-wallet usefulness. Based on findings, this study recommends strategies to maintain customer’s satisfaction and to increase continuance intention, such as security prioritization on e-wallet, a customized promotion for each customer, application update based on customer’s feedbacks, and market expansion to include small and medium enterprises (SMEs).

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Public health on social media: Using Instagram posts for investigating dengue hemorrhagic fever in Indonesia

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AIP Conference Proceedings 2021年第1期2329卷

作者： Ira Puspitasari Rohiim Ariful Barry Nuqoba 1Information System Study Program Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia 2Research Center for Quantum Engineering Design Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia

Dengue Hemorrhagic Fever (DHF), an acute capillary leak syndrome caused by dengue virus, is one of the major public health problems in Indonesia. Several major DHF outbreaks have occurred, and the incidence rate has increased from year to year. The increasing use of social media for health-related activities and the geolocation social media data can be leveraged to enhance the current surveillance system for controlling communicable diseases, including DHF. This study explores Instagram, one of the most popular social media in Indonesia, to analyze posts about DHF toward improving the surveillance system. We extract Instagram posts in 2017 - 2018 with geolocation and date-time value, that contained one or more DHF keywords in Indonesian language (i.e., demam berdarah dengue, demam berdarah, dengue, Aides aegypti, and fogging), resulting in 665 posts in dataset 2017 and 976 in dataset 2018. The preprocessing of the dataset includes tokenization, word normalization, stop word removal, stemming, and building the term-document matrix. The training dataset is labeled into news, education and information, and other classes, and the K- nearest neighbors (KNN) is applied to classify the DHF posts. The accuracy of the KNN classifier is 71% for the 2017 dataset and 77% for the 2018 dataset. For the deployment, we perform spatial analysis and compare the results with the actual DHF cases from the Ministry of Health of Indonesia. The spatial analysis results report that 17 provinces reveal similar changes between the number of DHF posts on Instagram and the number of actual cases from 2017 to 2018, while 17 other provinces reveal the opposing changes. The results and findings of this study show that Instagram posts may contribute to enhance the current surveillance system. For example, the frequency of Instagram posts and its sharp increase may indicate unusual events about the DHF situation in a specific province.

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The Effect of Aloe vera Extract Variation in Electrospun Polyvinyl Alcohol (PVA)-Aloe vera-Based Nanofiber Membrane 8

The Effect of Aloe vera Extract Variation in Electrospun Pol...

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8th International Conference on Theoretical and Applied Physics, ICTAP 2018

作者： Hikmawati, D. Rohmadanik, A.R. Putra, A.P. Siswanto Aminatun Physics Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya61110 Indonesia Biomedical Engineering Study Program Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya61110 Indonesia

Electrospinning technique is a method to produce nanofiber with high potential difference. Several main parameters in the electrospinning process are solution parameter, such as viscosity, surface tension and conductivity. Those parameters affect the morphology of nanofiber membrane produced by the electrospinning process. This study used 10% PVA in aquadest with several Aloe vera concentration (0, 2.5, 5, 7.5 and 10 % w/v). The viscosity of the solution increased when the concentration of the Aloe vera increased. SEM image of the nanofiber membrane showed that the diameter of the nanofiber increased with the increase of the Aloe vera concentration, with the highest diameter of 379.80 nm on the membrane with Aloe vera concentration of 10% w/v. The result of DSC test showed that there were shifts on the glass transition (Tg) and melting point (Tm) value along with the addition of Aloe vera in the PVA solution. This results was also emphasized with the result of FTIR test which showed the shift on the wavenumber absorbance due to the crosslinking between PVA and Aloe vera. The degradation test indicated that the presence of crosslinking could maintain the nanofiber structure, thus the membrane was not easily degraded. © Published under licence by IOP Publishing Ltd.

关键词： Nanofibers

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An investigation of strength degradation due to thickness plate reduction on Ferry Ro-Ro Ship's Hull

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IOP Conference Series: Earth and Environmental science 2021年第1期921卷

作者： A M Nugraha A M U Pawara A Ardianti F Mahmuddin Naval Architecture Program Department of Science Food Technology and Maritime Kalimantan Institute of Technology Balikpapan Indonesia Naval Archirecture Department Engineering Faculty Hasanuddin University Makassar Indonesia Marine Engineering Department Engineering Faculty Hasanuddin University Makassar Indonesia

Old ships will experience a degradation of the structural strength after receiving repeated loads. Decreased strength performance is also caused by structure shape and structural dimensions changes. In steel ships, Dimensional changes will be discovered when the ship is docked, because the material undergo corrosion causing in thinning the shell plate. In this study, a thickness reduction of the shell plate has been simulated to determine the longitudinal response of the ship's structure. A Finite element analysis of ferry Ro-Ro ship's hull was carried out using ANSYS package program. The simulation was carried out to exceed the allowable limit for reducing the thickness plate by the Indonesian Classification Bureau (BKI), which is 20% of the initial plate thickness. Based on simulation result, it was found that an increase of stress at each variation of the reduction in hull plate thickness in hogging and sagging conditions.

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An Analysis of Coal Post-Mining Land for Agricultivation Uses (A Case study on PT ABK in Kutai Kartanegara District, East Kalimantan Province)

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IOP Conference Series: Earth and Environmental science 2022年第1期950卷

作者： Ansahar S R P Sitorus H Hardjomidjojo E I K Putri Natural Resources and Environmental Management Science Study Program Graduate School of IPB University West Java Indonesia Department of Engineering Faculty of Mining Enginering Kutai Kartanegara University Kutai Kertanegara District Kalimantan Timur Province Indonesia IPB University West Java Indonesia

The characteristics of coal surface mining activity are vulnerable to environmental degradation due to soil excavation, although only causing a lower risk in worker's incidence and economically beneficial as requiring a lower cost than the underground mining method. This study aimed to analyze the types of post-mining land use worth developing for the local community's livelihood around the post-mining land on the concession of PT Anugerah Bara Kaltim (ABK) in Kutai Kertanegara District, Kalimantan Timur Province. The method used was a cost-benefit analysis (CBA). The analysis results indicate that the pepper plant cultivation on the post-mining land within six years produces Net Present Value (NPV) at Rp 49,484,637.00, Benefit/Cost (B/C) Ratio at 1.347, Net B/C Ratio at 2.56, and Internal Rate Return (IRR) at 39.20%. Meanwhile, rice plant cultivation stimulated within six years produces NPV at Rp 8,653,754.00, B/C Ratio at 1.035, Net B/C ratio at 1.3871, IRR at 8,50%. The economic analysis results based on all indicators: NPV, B/C, net B/C, and IRR, demonstrate that the pepper and rice plant cultivation activities are feasible in the coal post-mining land.

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Application of Online science Practicum by Using Microsoft Teams and Learning Management System (LMS) During the Covid 19 Pandemic

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Journal of Physics: Conference Series 2021年第1期2019卷

作者： W A Pertiwi L A Sanjaya Nadiyah Hasirah M Haramen A S Budi E Zarvianti R W D Puspa L K Sianipar W Qoiriyah H Sitompul Islamic Education Management Study Program Faculty Islamic of Education and Teacher Training Muhammad Azim Institute Jambi Indonesia Department of Physics Faculty of Mathematics and Natural Science Universitas Negeri Jakarta Indonesia. Sharia Economics Study Program Faculty of Sharia and Law Muhammad Azim Islamic Institute Jambi Indonesia Physics Education Study Program STKIP Muhammadiyah Sungai Penuh Indonesia Kartika VIII-1 Senior High School Jakarta Indonesia Department of Physics Education Universitas Pelita Harapan Tangerang 15811 Indonesia Informatics Engineering study program Faculty of Engineering Sheikh Yusuf Islamic University Tangerang Indonesia

The research objective of this is to see how to apply science practicum online using Microsoft Teams and Learning Management System (LMS). The form of this research is classroom action research which aims to apply the online science practicum during the Covid 19 pandemic. Therefore, it is carried out using two cycles in the application of online science practicum. The subjects of this study were students of the seventh semester in the Natural science practicum course. Through observation and evaluation, it is shown that in the cycle I the percentage of practicum implementation which includes aspects of preparation, process and data and practicum results is 87.5%, in cycle II it has increased to 92.5%. In the assessment aspect of the practicum report, the average practicum assessment obtained in the first cycle was 3.09 from the highest score of 4 and in the second cycle was 3.7, while the aspect of student knowledge about the use of the Microsoft team which was taken using google form was 93%. In the aspect of student knowledge about the use of Learning Management System (LMS) by 75% and aspects of student understanding in the implementation of online science practicum using Microsoft Teams by 75%.

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