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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo, Sunaryo Ramadhani, Adri Wirawan Univ Indonesia Dept Mech Engn Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesia has more than 17,000 islands and has plenty of beautiful beaches and underwater spots which have great potential for maritime tourism. Tourism was ranked 3rd on Indonesia's foreign income and plays an important role for the country's ecomony. Despite having potential advantages, the government has not yet maximized its efforts to develop the attractiveness of its maritime tourism. Beside the beautiful spots Indonesia is also blessed with all year long sun shine, which could be tapped as renewable and green energy as substitution to fossil fuel. Refer to these great advantages of natural resources the research was aimed to support the government's program in developing its maritime tourism and to promote the use of green and renewable energy by designing a solar-powered tourism recreational boat which has 12 meters of length. The paper is focused on the design of solar energy and its electrical system, which includes conversion of solar energy to electrical energy and store it in the battery, the required electrical power is also predicted based on the appliances and equipment installed in the boat, the optimum attachment of solar panels on the boat structure is also calculated. All the methods and information we use are obtained from literature study, discussion with experts, and surveys to Jagur as solar-powered electric boat from Universitas Indonesia.

关键词： Solar energy

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Hull Design of Solar Powered Recreational Electric Boat for Indonesian Waters 3

Hull Design of Solar Powered Recreational Electric Boat for ...

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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo, Sunaryo Yusro, Fahmi Univ Indonesia Mech Engn Dept Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesia with its more than 17,000 islands and its geographical location as tropical country is blessed with many marine tourism destinations such as beautiful beaches and coral reefs, coastal community culture etc., in fact tourism is ranked as 3rd highest foreign income. On the other hand Indonesian government is also committed to promote the use of environmentally friendly new and renewable energy as an alternative to the fossil fuel which highly contribute to the air pollution. In conjunction with government's program in developing the marine tourism and in using green energy, the research is aimed to design solar powered recreational boat for tourism in Indonesia. The paper is focused on the design of the boat structure such as the hull type, the environmental friendly material for the boat hull, the arrangement of the boat that would suitable to be powered with solar energy etc. For this purpose references are obtained from literature study, experts' opinion, and previous experiments.

关键词： Fossil fuels

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Diversity and Utilization of Bamboo Plants in The Area of Hotel in Kedewatan Village, Ubud, Bali 2

Diversity and Utilization of Bamboo Plants in The Area of Ho...

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2nd International Symposium on Sustainable Landscape Development (ISSLD)

作者： Utami, N. W. F. Pradnyawathi, N. L. M. Udayana Univ Fac Agr Landscape Architecture Study Program Jl PB Sudirman Denpasar Bali 80232 Indonesia Udayana Univ Fac Agr Agroecotechnol Study Program Jl PB Sudirman Denpasar Bali 80232 Indonesia

Bamboo or tiying (Balinese language) is a widely used non-timber plant in Indonesia especially in Bali. The presence of bamboo appertains to its ethno-botanical function of bamboo especially for rituals. However, there are other utilization of bamboo which is naturally grown or intentionally planted. Kedewatan as a famous place in northern Ubud, Bali have many lavish hotels with its natural environment and appealing place. The aims of this study is to invent bamboo species diversity and bamboo utilization on private areas of hotel in Kedewatan. Methods used in this study was field survey with observation and interview technic. Observation was implemented by purposive sampling methods by selecting hotel which adjacent to Ayung and Wos rivers. Interview was conducted with some key persons in charge on managing hotel garden. In addition, bamboo species identification was established through literature study. The results show that there are eleven bamboo species found on the survey area with most commonly employed species in the area were tiying tali (Gigantochloa apus (J.A. & J.H. Schultes) Kurz.) and tiying gading (Phyllostachys sulphurea (Carr.) A. e.t. C. Riv.) which were belong to exotic species. The areas which bamboo cultivated were welcome area as a hedgerow and near hotel lobby, between, outside and inside villa buildings, and naturally grown in the riverbanks with a good landscaping arrangement. Bamboo plantations were utilized to adorn and support the quality of the hotel building as well as to conserve soil and water along Ayung and Wos river canyons. The other utilization of bamboo was to facilitate ritual activity in Kedewatan village. They are allowed to ask for limited amount of bamboo culms with condition not to damage the physical appearance and function that desired by the hotel manager or hotel owner.

关键词： Bamboo

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A study of the potential collections of Javanese native tree species in the Bogor Botanical Garden for aesthetic functions in the landscape

A Study of the potential collections of Javanese native tree...

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International Symposium on Arboriculture in the Tropics - Securing Ecosystem Functions in Urban Landscape (ISATrop)

作者： Shodiq, M. A. Budiarti, T. Nasrullah, N. Bogor Agr Univ Fac Agr Landscape Architecture Study Program Jl Meranti Bogor 16680 Indonesia

The selection of tree species planted for aesthetic functions may vary based on their physical appearance and it is very important to use the species of the native trees for ecological purposes. The objectives of this research were to assess the ecological distribution and the aesthetical performance of the collections of the Javanese native trees at the Bogor Botanical Garden. The data were processed and analysed based on habitat distribution and morphological characteristics. Furthermore, the Key Performance Index Assessment Technique was used to give value to each criterion. The stages of tree aesthetic quality assessment were done by simulation using the method of Scenic Beauty Estimation (SBE). Total 469 species of the Javanese native trees were discovered. Based on the habitat distribution, the highest number describes the species of tree scattered throughout the Island of Java (237 species), Western Java (131 species), West and Central Java (53 species), Central Java (17 species), central and eastern Java (12 species), eastern Java (9 species), and western and eastern Java (7 species). Furthermore, the species of native trees also had a range of habitat altitude ranging from coastal (0 masl) to mountain (3100 masl). Then, based on the criteria of aesthetic assessment, they were categorized as good (43 species), medium (172 species) and bad (14 species).

关键词： Ecosystems

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Syntactic analysis of traditional houses in urban kampung

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Built Heritage 2024年第3期8卷 156-174页

作者： Nova Asriana Rendy Perdana Khidmat Meldo Andi Jaya Verarisa Anastasia Ujung Widi Dwi Satria Riza Andriani Architecture Study Program Faculty of Infrastructure and Regional TechnologyInstitut Teknologi SumateraJalan Terusan RyacuduKecamatan Jati AgungKabupaten Lampung SelatanLampung 35365Indonesia Architecture Study Program Faculty of EngineeringUniversitas Muhammadiyah PalembangPalembang 30263Indonesia Heritage Community Palembang 30151Indonesia

This research investigates a syntactical study and comparative analysis of the statistical and spatial characteristics of traditional houses in an urban kampung settlement,focusing on a selected case study built by a participatory Arabic community in Palembang,South Sumatra,*** research aims to determine a formal rule basis for spatial confgurations to reveal identical sociospatial structures based on syntactical *** experiment measures spatial layout variation through space syntax analysis to provide a better understand of how the correlation between spatial confguration and sociospatial structures in traditional houses can be *** syntactical analysis applies four distinctive procedures:a selected case study,data collection,statistical and graphical analysis,and graph *** results indicate that the spatiality of all traditional houses in this kampung settlement highlights the spatial hierarchy order as a formal rule-based system,and approximately an average of 10%of this community is concerned with designing intelligible *** Batu and other dwellings have a similarity and *** main dwelling’s function involves more steps to separate public and private functional rooms,but a functional transformation from a dwelling into a public facility creates a short distance for easy access by ***,this separation afects occupants,especially in terms of spatial distribution activities,movement fows,and other social *** approach provides practical and tangible benefts for preservation values related to buildings;this strategy may also change how buildings are perceived in other built environments.

关键词： Syntactical analysis Traditional housing Urban kampung Space syntax

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The obstacles of green building implementation in Semarang city 9

The obstacles of green building implementation in Semarang c...

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9th Engineering International Conference, EIC 2020

作者： Nugradi, D.N.A. Study Program of Architecture Department of Civil Engineering Faculty of Engineering Universitas Negeri Semarang Indonesia

The Semarang City Government has issued a Mayor Regulation on Green Buildings since 2019. Since then the construction of buildings with a certain floor area in Semarang City must follow this regulation. Evaluating implementation constraints related to green building construction based on the experience of the development actors, is an important thing to do. This study aims to identify obstacles in realizing green buildings in the city of Semarang. Data collection was carried out through a questionnaire survey of respondents from development actors involved in green buildings such as contractors, consultants and project owners and bureaucratic officials related to green building licensing. Data analysis was performed using descriptive analysis to reach agreement between respondents. Next, a hierarchy of these constraints will be sought. Constraints found in realizing green buildings are: lack of socialization from the city government, alternative materials, lack of best practices, experts, and financing. For this reason, a strategy is needed to overcome these obstacles from every aspect or based on a combined consideration of all aspects. © Published under licence by IOP Publishing Ltd.

关键词： Surveys

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Design optimisation of mean room surface exitance and total corneal illuminance using Monte Carlo simulation

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Building Simulation 2022年第11期15卷 1869-1882页

作者： Rizki A.Mangkuto Beta Paramita Building Physics Research Group Faculty of Industrial TechnologyInstitut Teknologi BandungBandung 40132Indonesia Architecture Study Program Faculty of Technology and Vocational EducationUniversitas Pendidikan IndonesiaBandung 40154Indonesia

In lighting design,mean room surface exitance(MRSE)has been known as an indicator of the adequacy of illumination in an indoor *** studies have suggested an exponential model relating MRSE and the observer’s retinal *** is particularly applicable in a room with homogenous room surface reflectance and a constant total corneal illuminance,which is the total illuminance received at the ***,accuracy of the exponential model is yet to be assessed in ***,the implication on interior lighting design is also yet to be *** study thus aims to assess the accuracy of the exponential model and to optimise the output *** computations using Monte Carlo simulation are performed for various input variables,followed with sensitivity and uncertainty analyses and *** errors of the exponential model are found between-10%and 6%.The MRSE is highly influenced by surface reflectance,whereas the total corneal illuminance is influenced by the source luminous *** design parameters are obtained by minimising the ratio between total corneal illuminance and ***,this study provides guidelines in lighting design practice for enhancing room spatial brightness while minimising energy use.

关键词： mean room surface exitance corneal illuminance surface reflectance design optimisation Monte Carlo simulation

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Propulsion System Analysis For Solar-Powered Electric Water Recreational 3

Propulsion System Analysis For Solar-Powered Electric Water ...

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3rd International Tropical Renewable Energy Conference on Sustainable Development of Tropical Renewable Energy (i-TREC)

作者： Sunaryo Nurachman, Dendi Univ Indonesia Dept Mech Engn Naval Architecture & Marine Engn Study Program Temple Depok 16424 Indonesia

Indonesia is the world's largest archipelago with more than 17,000 islands, and also the best marine tourism destination, there are many beautiful beaches and underwater spots throughout the country. Due to this potential condition Indonesian government is planning to improve its maritime tourism sector. To realize this boats play very important role both for transport as well as for recreational purposes. On the other hand the government is also committed to reduce the global warming from the use of fossil fuel especially in industry and transportation through the Presidential Regulation no. 61/2011, with the strategy for replacing the fossil fuel with renewable energy. To support the government's program the research is aimed to design solar -powered electric recreation boat for tourism, with the consideration that there is almost non-stop sun shine available all year long in Indonesia. The boat has length of 12 meters. In this paper the focus is on the analysis of the propulsion system of the boat, which consists of the calculation the power needed to run the electric motor, the optimum propeller design, and the steering system.

关键词： Boats

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Design and calculation of mechanical system for solar-powered electric boat 2

Design and calculation of mechanical system for solar-powere...

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2nd International Tropical Renewable Energy Conference (I-TREC)

作者： Sunaryo Nurachman, Dendi Imfianto, Pradhana S. Univ Indonesia Depok Dept Mech Engn Naval Architecture & Marine Engn Study Program Depok 16424 Indonesia

Indonesian government has a flagship program that is to promote the nation through the maritime sector and make Indonesia as Global Maritime Fulcrum. To achieve that, sea transportation is very important for the development of Indonesia. But sea transportation is also the highest contributor to the air pollution and global warming. In order to reduce the source of global warming Indonesian Government has a strategic plan to gradually replace the use of fossil energy with renewable energy. One of the renewable energy that can be used effectively in Indonesia is solar energy, because Indonesia located along the equator and has a high intensity of sunlight that means it has excellent solar energy availability. In attempt to contribute to the Government's energy strategic plan, the research is aimed to design a solar-powered electric boat with single pilot. The project is a further development of the solar boat created by the Universitas Indonesia team that participated in the International Solar-boat Challenge competition in the Netherlands. The paper is focused on the design and calculation of its mechanical system. The system is divided into propulsion system, steering system, and bilge pump system. The research is conducted based on literature study, discussion with experts, and surveys to the solar-powered electric boat had been designed previously for the race. Collected data are then used as input for the calculation and simulation of the vessel being designed. It is expected that the study could optimize the mechanical system of the solar-powered electric boat, and can be developed for recreational use in Indonesian waters.

关键词： Global warming

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The Implementation Of Centrifugal Force In The Geometric Design Of Road For Safety Driving Convenience On The Cisarua sta.0+050-1+450 9

The Implementation Of Centrifugal Force In The Geometric Des...

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9th International STEM Education Conference (ISTEM-Ed)

作者： Akbardin, Juang Mohamad, Dadang Yudhi, Asep P. Aprian, Eky Univ Pendidikan Indonesia Civil Engn Study Program Jl Dr Setiabudhi 229 Bandung 40154 Indonesia Univ Pendidikan Indonesia Architecture Study Program Jl Dr Setiabudhi 229 Bandung 40154 Indonesia

ISBN: (纸本)9798350365986;9798350365979

The road of Cisarua - Ngamprah has winding conditions and can result in accidents from a geometric perspective. Some of the reasons are because the radius, visibility, and pavement widening at bends have inappropriate road slopes. This research aims implementation of centrifugal force in the geometric design of road for safety driving Conveniencet at the Cisarua sta. 0+050 - 1+450. This research method uses evaluative and quantitative methods. Data collection is carried out by observing road locations and the agencies responsible for completing geometric traffic data. Data analysis was carried out on centrifugal strength calculation, the highway gradient, arch sharpness calculation, and centrifugal forces implementation on road bends. These actions are lumped through plunging the aftereffect of greater centrifugal force strength. Moreover, this implementation is also able to reduce the chance of accidents due to centrifugal force impacts based on road geometry calculations. Based on the evaluation and implementation of a smaller centrifugal force design, the use of a spiral-circle-spiral bend type with a transition curve can increase safety driving comfort.

关键词： Cisarua-Ngamprah road centrifugal force geometric safety driving comfort

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