2 0 0 0 OA Web版農業経営診断サービスの特徴とユーザ評価
- 著者
- 大室 健治 佐藤 正衛 松本 浩一
- 出版者
- 日本経営診断学会
- 雑誌
- 日本経営診断学会論集 (ISSN:18824544)
- 巻号頁・発行日
- vol.15, pp.112-118, 2015 (Released:2016-09-15)
- 参考文献数
- 15
本稿では,農研機構が開発した「Web版農業経営診断サービス」(以下,Webサービス)の特徴を詳述したうえで,Webサービスの試行版に対する利用者のユーザ評価結果を整理し,ユーザ要求に沿ったWebサービスの今後の改良方向を提示する。これまで,各種団体が農業経営診断ツールを開発してきているが,それらに共通する課題は,営農類型・規模などを考慮した標準値データベースを持たないため,診断対象の値と標準値との比較考量ができない点にあった。Webサービスは,農林水産省が保有する個票データの解析結果に基づく標準値データベースを内蔵しており,各診断指標についての標準値との比較,ならびに良好・不良などのランク判定が可能である。Webサービスの今後の改良方向は,外部診断者の業務内容に沿った対応,営農類型の特殊性を踏まえた診断手法の組込み,6次産業化などの多角的な農業経営への対応である。
1 0 0 0 OA 火薬の爆発特性を利用したシリンダ形跳躍ユニット
- 著者
- 平田 大貴 山田 泰之 大室 健 森田 寿郎
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集C編 (ISSN:18848354)
- 巻号頁・発行日
- vol.78, no.786, pp.547-556, 2012 (Released:2012-02-25)
- 参考文献数
- 11
This paper proposes a new jumping unit that using chemical energy. Conventional jumping robots have difficulties to equip both lightweight and high output energy at the same time. In regard to this, chemical energy of black powder was adopted. Using explosives allows jumping robots to get high energy instantaneously. First of all, acceleration and velocity characteristics of the cylinder were clarified by experimental cylinder. The approximate expression of pressure change in the cylinder was derived based on the characteristics. Second, expressions of jumping theory were lead and relationships between some parameters (mass, rod-area, cylinder stroke) and jumping height were simulated. Curves with a peak were given from all of those parameters and existence of optimal value was clarified. The significance of the simulation was shown by jumping motion of about 2000mm by the experiment. Finally, four-legged robot dummy with jumping unit that change direction, control of height and isolated ignition were available, is developed. Trajectory of jumping motion was examined when the direction of cylinder was changed from vertical condition. Effectiveness of proposed method was confirmed from jumping height of 720mm with cylinder angle of 10 degree.
- 著者
- 平口 嘉典 安江 紘幸 大室 健治 稲泉 博己
- 出版者
- 日本農業経済学会
- 雑誌
- 農業経済研究 (ISSN:03873234)
- 巻号頁・発行日
- vol.87, no.4, pp.424-429, 2016
<p>The objective of this study is to clarify a role taken by the activity of local entertainment as a community of practice for sustaining and developing rural areas at "O" district in Rikuzentakata City, Iwate Prefecture, Japan, From interviews of members who preserve the local entertainment, the following four points were revealed: firstly, the lore process of the art was double-linear; secondly, the art had been handed down along with the physicality; thirdly, members had obtained the four learning through the activities; fourth, all members hoped to continue for the future of the activities.</p>
1 0 0 0 OA 産地形成に寄与する実践コミュニティの役割
- 著者
- 大室 健 森田 寿郎
- 出版者
- 一般社団法人日本機械学会
- 雑誌
- 日本機械学會論文集. C編 (ISSN:03875024)
- 巻号頁・発行日
- vol.76, no.766, pp.1503-1513, 2010-06-25
Movable structures can change their shape because each of the components are connected by hinges. This paper discussed a mechanism design method that can relocate hinges based on a fourbar linkage mechanism. In this paper, "structural fabric" is defined as the arrangement of the hinges, and "shape" is also defined as the structural externals made from the arrangement of the hinges. By this definition, changes of the shape by the hinge's angle without changing the hinge arrangement is different from changes in the structural fabric. On the other hand, origami can transform by changing its structural fabric because it can freely relocate creases as hinges. However, there have been no rigid body structures that have origami-like characteristics, since there has been no mechanism that can relocate hinges. So we have designed HDRM (Hinge Double Relocation Mechanism) which can relocate hinges, and have constructed movable structures by combining the HDRM. Contents of this paper is as follows; First, a mechanism design requirement that can relocate hinges by the planar linkage have became clear. The design requirement has been expanded to spatial linkage mechanisms which have been named HRM (Hinge Relocation Mechanism), through the mechanical analysis of the spherical quadric crank chain mechanism. Next, the HDRM that relocates hinges in a singular configuration has been invented by adapting the mentioned requirement. The requirement of making movable structures from HDRM has been cleared by solving the Hamiltonian path problem. Finally, from evaluations using kinematical and interference analysis on the 3D-CAD, it has been confirmed that the constructed movable structures can change into various shapes by changing the structural fabric.