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Featured researches published by Ryohei Morinaga.


Journal of Asian Architecture and Building Engineering | 2018

Effect of Housing Layout and Open Space Morphology on Residential Environments–Applying New Density Indices for Evaluation of Residential Areas Case Study: Tehran, Iran

Sepideh Payami Azad; Ryohei Morinaga; Hideki Kobayashi

Over time, urban developments with increased densities have led to a decrease in private open space with a lack of public open space. Residential open spaces are missing in housing legislations as they are estimated based on floor area ratio and building coverage ratio, whereas they cannot be used as an all-encompassing measurement tool. Moreover, it is important for designers to consider housing layout to ensure a pleasant environment for residents; eventually, a range of benefits and opportunities will be available in residential open spaces. Therefore, to achieve a better quality of space in residential areas, new indices in the evaluation of residential environments should be proposed. This research assumes that there are links between the attributes of housing layout, space openness, and quality of space in residential areas. This study intends to examine some of the effects of housing layouts on residential open space through a comparative analysis of residential areas in Tehran. The relation between building arrangements, possibility of windows, and spatial openness will be analyzed; subsequently, two new indices—wall perimeter index (WPI) and spatial openness index (SOI)—will be proposed and target districts will be studied to compare different residential areas according to the new indices.


Journal of Architecture and Planning (transactions of Aij) | 2017

A COMPARATIVE STUDY ON THE CONDOMINIUM HOUSING AND COOPERATIVE HOUSING IN CHINA: The cases of condominium housing in Changsha China, “Lixiangjiayuan” and “Guanshanyanyue”@@@長沙市の一般分譲住宅、「理想佳苑」、「関山偃月」を対象に

Li Li; Ryohei Morinaga; Hideki Kobayashi

Since 1980, commercial housing policy is implemented, housing industrialization and commercialization has become a trend which cannot be avoided in the current housing construction of China. In order to obtain higher profit, developers provided consumers with a variety of styles of apartment and still controlled of the Chinese housing market. Under such circumstances, the first cooperative housing in China Lixiangjiayuan was completed in 2013, Wenzhou, Zhejiang Province, and the nearest case Guanshanyanyue was completed in Changsha, Hunan Province. It is necessary to explore what kind of methods should be adopted in the future residential projects in China. The purpose of this study is that: Make a comparison on housing choice, project planning and management between Chinese cooperative housing and Chinese general condominium housing, and revealing the characteristics of each, and to explore the possibility of the spread of cooperative housing in China. This preliminary analysis has revealed that: (1).It is necessary to make more consideration to find a balance between the diversification of lifestyles and project planning of Chinese cooperative housing. (2).For the general commercial housing, there are many different options for dealing with the diversification of tenants. For cooperative housing, it should also take into account the diverse needs of households. (3).The rule for ensure the stability of project and risk reduction is important.


Aij Journal of Technology and Design | 2017

BASE PLACE TO STAY FOR PROMOTING DUAL-HABITATION AT SOUTHERN BOSO AREA

Tatsuru Kawachi; Ryohei Morinaga; Biichi Nakajima

河内 建ー ーーーー * 1 森永良丙ー ーーーー* 2 中嶋美一ー ーーーー* 3 キーワード: 二地域居住/二拠点居住,多拠点居住,移住定住,都市農村交流


Journal of Asian Architecture and Building Engineering | 2016

Rural–Urban Adaptation in Dwelling Patterns in an Informal Settlement in the Dominican Republic - A Case Study of Azul in San Francisco de Macorís -

Luz Genoveva Diaz Reynoso; Hideki Kobayashi; Ryohei Morinaga; Jiyoung Jung; Tapio V. J. Tarvainen

Abstract The aim of this paper is to consider a core-housing model that suits the local culture and customs of the Dominican Republic. The study is based on a survey that was conducted in an informal settlement called Azul, in the municipality of San Francisco de Macorís. The goal of the survey was to study rural–urban adaptation patterns in the dwellings, and to identify the minimal core that could be used as a basis for the proposal. The survey was divided into two stages: 1) questionnaires were administered to the local residents to identify the residents′ profiles, and 2) direct observation and mapping was used to identify the dwelling patterns. Sixteen residents were interviewed and 15 dwellings were mapped for the analysis. The results showed that the dwellers built their homes initially based on the traditional rural dwelling pattern, and then adapted and improved their dwellings according to their capabilities and life cycle stage. Based on the survey results, a basis for a core-housing model that takes into account the Dominican lifestyle is proposed.


Journal of Architecture and Planning (transactions of Aij) | 2016

A COMPARATIVE STUDY ON CO-OPERATIVE HOUSING OF JAPAN AND CHINA: The case of “Guanshanyanyue” in Changsha China@@@中国長沙市の「関山偃月」を対象に

Li Li; Kenji Takada; Ryohei Morinaga; Hideki Kobayashi

Graduate Student, Graduate School of Engineering, Chiba University. M. Arch. ** Graduate Student, Graduate School of Engineering, Chiba University. M. Eng. *** Assoc. Prof. Graduate School of Engineering, Chiba University. Ph. D. **** Prof. Graduate School of Engineering, Chiba University. Dr. Eng. A COMPARATIVE STUDY ON CO-OPERATIVE HOUSING OF JAPAN AND CHINA The case of “Guanshanyanyue” in Changsha China


Journal of Architecture and Planning (transactions of Aij) | 2018

LONG-TERM CHANGES OF THE TERRITORIALITY IN EXISTING RESIDENTIAL AREA: A study on long-term changes of territoriality Part 5

Hidetaka Fujitani; Ryohei Morinaga; Hideki Kobayashi


Aij Journal of Technology and Design | 2018

CHARACTERISTICS OF BASE PLACE TO STAY FOR DUAL-HABITATION AT KANTO AND NEIGHBORING PREFECTURES

Tatsuru Kawachi; Ryohei Morinaga; Biichi Nakajima


Summaries of technical papers of annual meeting | 2015

5566 Planning and Evaluation of Facility for Common Use : A Studys on Evaluation of Facility for Common Use and Community Condition in Privately-Provided Condominium Part2

Keijiro Shiroi; Hideki Kobayashi; Ryohei Morinaga; Kenji Takada; Yuji Kimata


Journal of Architecture and Planning (transactions of Aij) | 2015

A STUDY ON THE SUSTAINABLE AUTONOMOUS MANAGEMENT OF CO-OPERATIVE HOUSING: Consideration from consciousness of residents in national questionnaire survey@@@全国調査における居住者意識からの考察

Kenji Takada; Hideki Kobayashi; Ryohei Morinaga; Jiyoung Jung


J. Archit. Plann. | 2015

A STUDY ON THE SUSTAINABLE AUTONOMOUS MANAGEMENT OF CO-OPERATIVE HOUSING:Consideration from consciousness of residents in national questionnaire survey

Kenji Takada; Hideki Kobayashi; Ryohei Morinaga; Jiyoung Jung

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Nobuyuki Arai

Tohoku Institute of Technology

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