A study of producers cooperatives for fruit-farm households in South Korea

Recently, as the issue of stabilizing supply and demand is becoming the goal of the agricultural administration, opinions insisting to strengthen bargaining powers and solving the supply and demand of agricultural products are being raised through production groups autonomically forming organizations in producing districts. This producers organizing is a method of strengthening the competitiveness of producing areas, not the goal. Hence, this study aims to search for a local and systematical competitiveness improvement method for the organization of farmer engaging directly in farming. In order to carry out this study, a Heckman Probit model was used for analyzing the mutual relationships of different fruit-farms divided in accordance with type of farming and whether or not participating in production organizations. As a result, first of all, full-time farmers that are running a complex farm showed a tendency of not participating in production organization. Secondary, the regional characteristics had statistically significant effects on the decision of the type of farming and participating in production organizations. Thirdly, securing agricultural man power had a significant effect on the decision of the type of farming and participating in production organizations. Fourthly, gender had an effect on the decision of participating in production organizations. Fifthly, in the case of older farmers, they might not find participating in production organizations desirable, but there is a need to share their farming experiences with the members of the production organizations

ラット切歯の完全破折に伴う経時的形態変化について

ラット両側下顎切歯を鈍的に完全破折し,経時的形態変化を観察した.破折後3日では,歯髄と歯周組織に限局した化膿性炎,細菌の集塊,壊死組織等をみたが,歯髄深部に炎症が波及したものはなかった.破折後4日には,化膿性炎はほぼ消退し露髄面には幼若肉芽組織を形成し,7〜10日後にはdentin bridgeを形成していた.介達的に破折した象牙質は離開度にかかわらず,離開部に肉芽組織が充満し,経過とともに歯髄側壁より幼若新生象牙質を新生添加していた.破折した歯牙は経過中対照群と同程度に発育伸長していた.実験群の半数には根端付近の舌側部幼若象牙質層と象牙芽細胞層の不規則な波状化,一部には根端付近唇側のエナメル質形成異常をみ

ADRENAL ANDROGENS AND TESTOSTERONE IN PATIENTS WITH NON-INSULIN-DEPENDENT DIABETES MELLITUS

Adrenal androgens have recently received much attention regarding their anti-diabetic effects. We investigated the serum levels of dehydroepiandrosterone sulfate (DHEA-S) and testosterone in 68 men with non-insulin-dependent diabetes mellitus (NIDDM) and in 31 non-diabetic men. Compared with non-diabetic men, men with NIDDM had significantly lower levels of DHEA-S and testosterone. Serum levels of DHEA-S showed a significant negative correlation with age and were also inversely related to the severity of diabetic nephropathy. However, no correlations were observed between serum levels of DHEAs and fasting plasma glucose, HbA1c, serum total cholesterol concentration or serum triglyceride concentration. Our results suggest that diabetes and aging have detrimental effects on adrenal androgens, and that lower levels of adrenal androgens are also associated with the severity of diabetic nephropathy, but not with glycemic control or dyslipidemia

小型ソフトハンドリンググリッパを用いたアクティブセンシングの研究 : 把持対象物の計測同定

This pager is concerned with the active sensing using a two-fingered miniature gripper driven by a piezoceramic stack. A linkage that transforms the actuator longitudinal dilation into the lateral fingertip motion is designed. A strain gauge is placed at the bottom of a flexible finger for sensing the stiffiness of an object grasped at the tip of the finger's. A mathematical model of the system is developed and applied to the study of the active sensing where the gripper is driven to grasp the object with a time step response