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Preservation of Nutmeg Tree (Myristica fragrans Houtt) used as Bogor's Local Culinary Ingredient for the Strengtheness of Urban Landscape Identity 6

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Preservation of Nutmeg Tree (Myristica fragrans Houtt) used ...

6th International Conference of Jabodetabek Study Forum 2018

作者： Samantha, Remiya Nurhayati Syartinilia Magister Program of Landscape Architecture Graduate School IPB University Bogor16680 Indonesia Department of Landscape Architecture Faculty of Agriculture Ipb University Bogor16680 Indonesia

Nutmeg tree (Myristica fragrans) is Indonesian native tree species originating from Maluku Island, especially Ambon and Banda. The spread of nutmeg in Bogor area can be traced back to the Dutch colonial period when different kinds of spices were traded across the Indonesian archipelago and beyond. Having this long history, nutmeg is now widely used in Bogor's culinary. At the national level, it has high economic value and become one of Indonesia's main export products. However, there is little research on nutmeg tree spatial distribution. The objectives of the study were : (1) identify the nutmeg trees spatial distribution in Bogor city (2) mapping the existence and identification of nutmeg trees conditions and growing environment. This research was conducted Bogor City from February - May 2018. The data was obtained through direct interview, study field, and study literature. Data collection is determined based on the distribution of nutmeg trees in Bogor City, and extinct status based on study literature. Furtehermore, the existence of nutmeg trees in Bogor collected used purposive and snowball technique. The results showed that a total of 108 nutmeg trees were found in all sub-districts of Bogor city. These trees grow in a variety of areas such as green corridor, public park, agriculture farm, riverbanks, yard, office park, and cemetery. The results of this study can be used as the basis for determining the preservation strategy and area for nutmeg conservation in Bogor city. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Spatial distribution

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Calligraphic brush

Calligraphic brush

14th Conference on Computer-Aided Architectural Design Research in Asia: Between Man and Machine - Integration, Intuition, Intelligence, 2009 TAIWAN CAADRIA

作者： Tang, Sheng Kai Tang, Wen Yen Computational Design Program Graduate School of Architecture Carnegie Mellon University Pittsburgh PA 15213 United States Theoretical Design Group Graduate Institute of Architecture National Tainan University of the Arts Tainan 72045 Taiwan

ISBN: (纸本)9789860180800

The development of better User Interface (UI) and Tangible User Interface (TUI) for 3D modeling has lasted for decades. With the popularity of free form style achieved by algorithmic methods, the existing solutions of UI/TUI for CAD are gradually insufficient. Neglecting the steep learning curve of algorithmic design requiring solid background of mathematics and programming, the common drawback is the lack of interactivity. All actions rely heavily on mental translations and experimental trial and error. In this research, we try to realize the idea of interactive algorithmic design by developing a tangible calligraphic brush, with this device designer can intuitively adopt algorithmic methodology to achieve highly creative results.

关键词： User interfaces

FORMFINDING AND BUCKLING ANALYSIS OF THREE-WAY KAGOME TIMBER LATTICED SHELLS USING GENERAL-PURPOSE FE SOFTWARE

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Journal of Structural and Construction Engineering 2023年第809期88卷 1145-1155页

作者： Shiratori, Kan Yamashita, Tetsuo Architecture Program in Graduate School Kogakuin University Japan School of Architecture Kogakuin University Japan

In this paper, a simple and practical method is proposed which enables formfinding analysis of a timber three-way latticed kagome shells and following buckling analysis, using general-purpose FE software without using specialized software for formfinding. In addition, the elastic buckling properties of the kagome shells formed by formfinding are investigated. In-plane shear stiffness of three-way lattices is so high that fixing the intersections does not allow the lattice planes to deform into a shell geometry. Therefore, the formfinding is carried out with virtual slide mechanism at the intersections enables slide of the members along the shell-surface without additional axial stress. © 2023 Architectural Institute of Japan. All rights reserved.

关键词： Buckling

Study on accumulated deflection caused by inelastic earthquake response in large-span moment frames made of H-shaped steel

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Journal of Structural and Construction Engineering 2018年第748期83卷 819-826页

作者： Iwasawa, Ryo Yamashita, Tetsuo Architecture Program in Graduate School Kogakuin University Japan School of Architecture Kogakuin University Japan

Large-span steel moment frames are used as the main structure in many gymnasiums. Several studies pointed out that significant deflection in such moment frames was caused by inelastic seismic response for horizontal earthquake ground motion. This paper explains how horizontal excitation causes large accumulated deflection, and theoretically formulates the relations between vertical deflection and inelastic deformation. The moment frames made of H-shaped steel is considered herein, where shear yield of panel zones occur in advance to forming flexural yield hinges. Since gymnasiums are used as shelters in earthquake disaster, we need a method to evaluate the structural damage quantitatively, by inspecting and measuring the deformed gymnasium. By measuring the deflection after earthquake, we might be able to estimate the plastic deformation. In this paper, the possibility is discussed using FE dynamic response analysis. The mechanism how horizontal deformation causes accumulated deflection is summarized as follows. In elastic behavior, the moment distribution in the beam for horizontal load is antisymmetric. After forming two yield hinges at two ends of the beam, the moment distribution does not change and is also antisymmetric. In the both cases, the deflection does not increase. However, when only one yield hinge is formed at the leeward side, the deflection increases with the horizontal load due to the change of moment distribution until two hinges are formed. In this paper, bi-linear constitutive relation between the shear strain and moment acting on the panel zone is assumed and theoretical solution on the behavior is derived. The theoretical solution was verified by pushover FE analysis and good agreement was observed. By applying the derived theoretical formulas, ductility factor on the both panels can be estimated from the deflection. Dynamic response analysis was also performed to verify the estimation. This could be a useful method to estimate structural dama

关键词： Strain hardening

Cyclic shear tests of steel latticed plates composed of equilateral triangular grids

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Journal of Structural and Construction Engineering 2013年第694期78卷 2153-2161页

作者： Yamashita, Tetsuo Takeuchi, Ryota Shiratori, Kazuki Sato, Harushige School of Architecture Kogakuin University Japan Completed Architecture Program Graduate School Kogakuin University Japan

The present paper demonstrates and discusses a potential of steel latticed plates to use as seismic walls, through experimental study. Cyclic shear load tests of five steel latticed plates, composed of equilateral triangular grids, were conducted to investigate buckling and post-buckling strength and ductility. Three of five plates yield out-of-plane overall buckling and the rest in-plane member buckling as predicted. The buckling and post-buckling strengths can be approximated using the generalized slenderness calculated by linear buckling analysis and its function for inelastic strength, regardless to the buckling mode. Moreover, these latticed plates show good ductility and energy dissipation capacity But a disadvantage that the buckling deformation is too observable is also exposed.

关键词： Ductility

Study on seismic response of large-span cantilevered roofs considering vibration characteristics of main structures

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Journal of Structural and Construction Engineering 2019年第762期84卷 1073-1080页

作者： Arai, Yudai Yamashita, Testuo Architects and Engineers Architecture Program in Graduate School Kogakuin University Japan School of Architecture Kogakuin University Japan

This study demonstrates a method for seismic response evaluation of large-span cantilevered roofs excited by horizontal seismic input. Firstly we identified the vibration characteristics of an actual cantilevered roof by performing microtremor measurement. By analyzing the data, we found that the cantilevered roof had two major vertical vibration modes, the vibration of cantilever itself and the vibration exited by the sway deformation of the main building. When the main structure and cantilevered roof resonate, the response of cantilever increases. In this paper, the method for specifying that response characteristics of cantilevered roofs is discussed. © 2019 Architectural Institute of Japan. All rights reserved.

关键词： Seismic response

Equivalent flexural rigidity on composite beam with ⇘reduced beam section⇔ on lower flange

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AIJ Journal of Technology and Design 2021年第65期27卷 242-246页

作者： Kabuki, Taiga Yamashita, Tetsuo Architecture Program Graduate School Kogakuin Univ. Japan School of Architecture Kogakuin Univ. Japan

The Reduced Beam Section (RBS) is used as an effective method to improve deformation capacity on steel moment frames. However, study on flexural rigidity on composite beams with RBS has not been performed. This study proposes a useful method to calculate the equivalent flexural rigidity of composite beams with RBS on lower flange. The formulas were derived based on the energy method. FEM analysis was used to verify the theory. In addition, an eigenvalue analysis on a building model using the equivalent elastic beams with RBS was performed as an example. © 2021 Architectural Institute of Japan. All rights reserved.

关键词： Flanges

Microphone arrays for acoustic direction of arrival analysis: Model-based approaches 49

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Microphone arrays for acoustic direction of arrival analysis...

49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020

作者： Xiang, Ning Graduate Program in Architectural Acoustics School of Architecture Rensselaer Polytechnic Institute 110 8th Street TroyNY12180 United States

ISBN: (纸本)9788994021362

Estimating directions of arrival (DoAs) of multiple sound events still poses challenges in noise control engineering. This paper reviews recent developments in model-based direction-of-arrival analysis using three different microphone arrays, in situations potentially involving multiple concurrent noise sources. The microphone array configurations discussed in this paper include a sparse arrangement consisting of only two microphones, and more sophisticated configurations consisting of multiple microphone channels in the form of coprime linear arrays and spherical arrays. To cope with DoA analysis challenges using the model-based approaches, formulation and evaluation of prediction models are of central importance. Both noise source enumeration and direction of arrival estimation present important challenges in the noise DoA analysis of all three types of microphone arrays. The prediction models, based on specific array configurations, are evaluated upon experimental data derived from pertinent array signal processing in order to determine the most concise model that can adequately predict the experimental data, thereby estimating first the concise number of noise sources, then their DoA information. This paper reviews the prediction models recently established for the three microphone arrays, the two levels of model-based analysis, and experimental results. © Proceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020. All rights reserved.

关键词： Microphone array

Computational simulation of indoors temperature field: Comparative study between the aplication of short and long wind-catch

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Computational simulation of indoors temperature field: Compa...

11th International IBPSA Conference - Building Simulation 2009, BS 2009

作者： Drach, Patricia R.C. Federal University of the Rio de Janeiro Post-graduate Program in Urbanism of the School of Architecture and Urbanism - PROURB/FAU/UFRJ Rio de Janeiro Brazil

Aiming to study the temperature field changes, the House VI project was checked. This house is located in Vila37, Rio de Janeiro, Brazil, a dead-end small street with only one inlet/outlet. In the houses of Vila37, the indoor ventilation is restricted to the facade windows. Giving the impossibility of introducing cross-ventilation in a traditional way, a short wind-catch was previously added with positive results;therefore, simulations with long wind-catch are being carried out. The analysis started by solving the air-circulation problem by using a finite element method and after, with the wind fields added, the heat transfer problem was analysed. The results obtained were evaluated and compared with the previous ones.

关键词： Houses