School of Economics and Business Administration Department of Economics and Business Administration
民法(財産法)、土地所有権理論を中心に、建物賃貸借、共有林問題などを研究。現在、横須賀市個人情報保護運営審議会委員などを務めている。また、横浜市、厚木市、茅ヶ崎市、小田原市など神奈川県内市町村職員対象の民法研修を担当した。
Updated on 2025/05/21
民法(財産法)、土地所有権理論を中心に、建物賃貸借、共有林問題などを研究。現在、横須賀市個人情報保護運営審議会委員などを務めている。また、横浜市、厚木市、茅ヶ崎市、小田原市など神奈川県内市町村職員対象の民法研修を担当した。
修士(法学) ( 明治大学 )
所有権
森林
農地
Civil Law
非営利法人
漁業権
Land Law
土地
Humanities & Social Sciences / Civil law / 民法(財産法)
Yokohama City University Professor
2019.4
Yokohama City University
2019.4 - 2024.3
Country:Japan
Yokohama City University Dean
2017.4 - 2019.3
Country:Japan
Yokohama City University Professor
2009.4
Country:Japan
Yokohama City University International College of Arts and Sciences Professor
2009.4 - 2019.3
公立大学法人 横浜市立大学 国際総合科学部 准教授
2005.4 - 2009.3
Yokohama City University Associate Professor (as old post name)
1999.4 - 2005.3
Yokohama City University
1998.4 - 1999.3
日本私法学会
JAPAN ACADEMIC SOCIETY OF AGRICULTURAL LAW
横浜市 横浜市公務災害補償等認定委員会委員
2024.11
Committee type:Municipal
横浜市立横浜商業高等学校 学校運営協議会 委員
2022.10 - 2024.3
Committee type:Municipal
公益財団法人 横浜市男女共同参画推進協会 理事
2020.3
Committee type:Other
横浜市立横浜商業高等学校 学校評議委員会委員
2020.1 - 2022.3
公益財団法人 神奈川県薬剤師会 倫理審査会審査員
2019.4
Committee type:Other
神奈川県 公衆浴場入浴料金等協議会 会長
2015.4 - 2019.5
Committee type:Municipal
横須賀市 個人情報保護運営審議会委員
2013.4
Committee type:Municipal
横浜市 よこはまグッドバランス賞認定委員会 会長
2009.4
Committee type:Municipal
横浜市 男女共同参画審議会委員
2007.4 - 2017.3
Committee type:Municipal
A Study on The Maintenance, Management, Conservation and Ownership of Forests
Masatoshi OSAWA, Kazuyuki KOIZUMI
THE BULLETIN OF YOKOHAMA CITY UNIVERSITY Social Science 73 ( 2・3合併 ) 1 - 22 2022.3
Current Status and Issues of Common Forest in Takayama Village,Gunma Prefecture
OSAWA Masatoshi
STUDIES OF REGIONAL POLICY 21 ( 2 ) 1 - 14 2018.12
A Study on Manifestation of Intention of Changes in Real Rights concerning Immovable Properties
OSAWA Masatoshi
The Bulletin of Yokohama City University Social Saience 69 ( 2 ) 1 - 13 2018.3
Servey and Analysis for Establishment of Control in Non-profit Organization
NAGAHATA Shushi, OSAWA Masatoshi
67 ( 1・2合併 ) 135 - 172 2016.1
A Study on Legal Structure of Forest Ownership Theory
67 ( 1・2合併 ) 1 - 54 2016.1
A Study on the legal character of fishing right
OSAWA Masatoshi
THE BULLETIN OF YOKOHAMA CITY UNIVERSITY 64 ( 1 ) 1 - 12 2012.11
「森林所有権の公共性と所有権制限」
大澤 正俊
横浜市立大学論叢 社会科学系列 60 ( 1 ) 140 2009
A study on the preservation-duty of a forest
60 ( 2・3 ) 446 - 218 2009
森林の公共性と森林法制の基本原理
大澤 正俊
横浜市立大学論叢社会科学系列 58 ( 1・2・3合併 ) 2007
体験する法学
関根豪政・北村貴編著、他10名( Role: Joint author第4章売買での意思表示【民法・財産法】、第5章私的扶養と生活保護【民法・家族法】)
ミネルヴァ書房 2020.3
農業株式会社と改正農地法-法務と税務
金光寛之, 松藤保孝, 松嶋隆弘, 編著, 大久保拓也, 岡島芳伸, 大澤正俊( Role: Joint author第2部 第3章 農業株式会社の設立 Q4~Q10」単独執筆114~126頁)
三協法規出版 2011.1
『新民法講義2 物権・担保物権法』
成文堂 2010 ( ISBN:9784792325923 )
『民法改正を考える』
日本評論社 2008
A Study on Preservation-duty of a Forest
OSAWA Masatoshi
THE BULLETIN OF YOKOHAMA CITY UNIVERSITY Social Science 60 ( 2・3 ) 446 2009
The public nature of a forest ownership,and ownership restrictions
OSAWA Masatoshi
THE BULLETIN OF YOKOHAMA CITY UNIVERSITY Social Science 60 ( 1 ) 140 - 111 2009
The public nature of a forest,and the basic principle of a forest law system
OSAWA Masatoshi
58 ( 1・2・3合併 ) 35 - 74 2007
56 ( 3 ) 283 - 309 2005
A Study on Agricultural Environment Conservation in The United Kingdom
Osawa Masatoshi
The journal of the Yokohama City University. Social science 3 21 - 38 2000.3
Theoretical and empirical research about keeping,management and preservation,and property of aprivate forest
Grant number:19K01423 2019.4 - 2022.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C) Grant-in-Aid for Scientific Research (C)
OSAWA Masatoshi
Authorship:Principal investigator Grant type:Competitive
Grant amount:\1040000 ( Direct Cost: \800000 、 Indirect Cost:\240000 )
In addition to visualizing the decrease trend of private forests and changes in the proportion of private forests from agricultural censuses and forest and forestry statistics data in Kanagawa Prefecture (graphs and table creation), we conducted interview surveys (mainly on the current state and response of forest of unknown forests, the present state and issues of forest inheritance, the presence or absence of data on forests owned by each municipality, etc.) based on the characteristics of forests in Kanagawa Prefecture.
As a result, the visualization of forest data revealed the increase or decrease in the forest area and the proportion of private, public, and national forests in numbers. In addition, the direction in which the problem of maintenance and management of the forest of unknown owners was solved by the Forest Management Law and the revised Registration Law was confirmed.
Protection / rehabilitation of shared forest and suppression of population runoff in inter-mountainous area · population inflow
Grant number:15K12279 2015.4 - 2018.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research Grant-in-Aid for Challenging Exploratory Research
Kanemitsu HIROYUKI
Grant amount:\1820000 ( Direct Cost: \1400000 、 Indirect Cost:\420000 )
We focused on hearing survey at Takayama village in Gunma prefecture. In particular, we examined and analyzed the land register from the Meiji Period and analyzed the causal relationship between protection and rehabilitation of shared forests in Takayama village of Gumma Prefecture, and the loss of population and influx. As a result, we reached the hypothesis that it is possible to prevent population outflow by promoting shared forest protection and regeneration, and promote population inflow. This is because it is necessary to regenerate and protect common forests and to acquire better forests by manpowering forests. Also, it takes a long time to regenerate the forest. In other words, protection and rehabilitation of shared forests is not a transient one like a public works but is continuous. The above is part of the research results this time.
Comprehensive study on internal control in Non-profit corporation
Grant number:25380108 2013 - 2015
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
NAGAHATA Shushi, OSAWA Masatoshi
Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) Grant type:Competitive
Grant amount:\1430000 ( Direct Cost: \1100000 、 Indirect Cost:\330000 )
This research project considers issues of internal control in non-profit corporations. In Japan, new regulations concerning non-profit corporations were enacted in 2006. However, this new law took ordinary corporate law as its template, and as a result it remains the duty of the director to set up internal controls, just as in corporate law.
In order to assess this situation, we have attempted to measure the extent of appropriate internal control by interviewing executives and conducting surveys of non-profit corporations. We have also attempted to suggest that in non-profit corporations, directors are not properly incentivized to achieve the same performance as their counterparts in publicly-traded corporations.
Grant number:21651014 2009 - 2011
Ministry of Education, Culture, Sports, Science and Technology Grants-in-Aid for Scientific Research(挑戦的萌芽研究) 挑戦的萌芽研究
Masatoshi OSAWA, 東田 啓作, 阿倍 高樹
Authorship:Principal investigator Grant type:Competitive
Grant amount:\1550000 ( Direct Cost: \1400000 、 Indirect Cost:\150000 )
The purpose of this research is to examine the efficiency of public water area development using both economic and law analyses. In particular, we examine (i) whether the existence of fishing rights and compensation rules for loss of fishers leads to efficient development, (ii) whether the rules of compensation influence the decision making of development, and (iii) what types of fishing rights are desirable in terms of social welfare.The main results of economic analysis are as follows. First, we obtain that explicit division of rights to the profits from fishing/fish stocks is needed for efficient development and harvesting. Second, who determines development and/or what kind of compensation rule is used influence the number of developed fishing districts and the amount of harvesting. For example, when the government determines the development area, the compensation according to the past fishing records leads to excess development and excess harvesting in terms of social welfare. On the other hand, the compensation according to the discounted present value of the fish stock leads to insufficient development.Moreover, the result of law analysis is as follows. Under the present Fisheries Act, it can be considered that each member of a fishery cooperative has her/his ownership interest in the profits of harvesting/fish stock. Demands for partition of the fishery (or the fish stock) and disposal of the partition are restricted for the benefit of cooperative resource management. When the present Fisheries Act was enacted in 1949, the fisheries rights under the former Fisheries Act were lapsed with compensation, and “new” fishing rights were given to fishers. Thus, the notion that a fishing right is given not to each fisher but to each community/cooperative, which was what fishing rights should be, is not valid under the present Fisheries Act.The result of the law analysis proves that the results from our economic analysis are effective to solve the problem on efficient development and harvesting.
民法・債権Ⅱ(債権各論)
民法入門
Institution:横浜市立大学
民法・債権Ⅰ(債権総論)
ビジネス法務研究
法学入門
Institution:横浜市立大学
民法・物権Ⅰ(物権法)
民法・物権Ⅱ(担保物権法)
厚木市「事務職員等昇任予定者研修講座」
Role(s): Lecturer
厚木市 2010 - 2018
(財)神奈川県市町村振興協会「民法研修講座」
Role(s): Lecturer
2009
茅ヶ崎市「新採用職員(民法)研修講座」
Role(s): Lecturer
2009 - 2020
神奈川県西地域広域市町村圏協議会「民法共同研修」
Role(s): Lecturer
2009 - 2018