A monotone comparative static result on contract incompleteness

The purpose of this paper is to generalize the incomplete contract model of Bajari and Tadelis (2001) into a continuous model, and to derive the condition under which the monotone comparative statics (MCS) methods can be applied. I will show that a type of single-crossing condition on the isoprobability curves of uncertainty is necessary and sucient for the availability of the MCS methods when a player has a supermodular ex post utility function. In this case, the greater the magnitude of uncertainty, the less his optimal contract allows the project to proceed smoothly.

Product Architecture as a Coordination System (Japanese)

Baldwin and Clark (2000) brought the substantial attention to the concept of product architecture. This concept, particularly the concept of module architecture, defines a product system as a "coordination system," taking the viewpoint that a product system is an object that is used by human users or developed by human developers. In this paper, product architecture is defined as a design concept for a product system that calls for complex part-to-part coordination in order to fulfill the user's objectives, whereby we seek to show that module architecture can clarify (1) the functions of a product, and (2) the relationship between users' commands and corresponding product actions. By doing so, it becomes possible for human users or developers, whose actions and behaviors are instinctively "context dependent," to operate and use highly complex systems as well as to design and develop new systems by seeking an appropriate combination of division of labor and collaboration between human beings and product systems.

Penetration of UVA into water and its effects on primary productivity with special reference to water column mixing

Article信州大学理学部附属諏訪臨湖実験所報告 9: 1-11(1995)departmental bulletin pape

Concanavalin A-induced cap formation in rat ascites hepatoma cells (AH 7974) and the interaction of cytoplasmic proteins with plasma membranes.

Concanavalin A (Con A) induced cap formation in rat ascites hepatoma cells (AH7974). In these Con A-treated cells, the association of cytoplasmic proteins with cell membranes was suggested by observing their Triton shells. The transition from G-actin to F-actin occurred in these cells. The association of membrane lipid with cytoplasmic proteins extracted from AH cells was studied by the isolation of protein-bound liposomes and phase transition release. The analysis of isolated liposomes revealed that many cytoplasmic proteins which specifically associated with liposomes were cytoskeletal elements including F-actins. The association of proteins with liposomes was affected by the lipid composition of the liposomal membrane and by the Ca2+ concentration of the incubation medium. The strong interaction of liposomal membrane with cytoplasmic proteins or isolated cytoskeletal proteins was demonstrated also by phase transition release using carboxy fluorescein-containing liposomes. These experiments showed that there was a strong affinity between lipid membrane and cytoskeletal elements including F-actins and that the amount of F-actin increased due to Con A treatment. The association of the submembranous microfilaments with the cell membrane may contribute to capping of the cells caused by Con A.</p

A study on the kinetic parameters, Vmax and Km of algal alkaline phosphate

Article信州大学理学部附属諏訪臨湖実験所報告 9: 161-168(1995)departmental bulletin pape

THE EFFECT Of SHOULDER POSITION DIFFERENCE OF STREAMLINE POSTURE IN COMPETITIVE SWIMMERS

The objective of this study was to investigate the movements of the centers of buoyancy and mass and the change in the distance between the two centers because of the elevation of the shoulder joints. The total length increased by 5.7 em on an average because of the elevation of the shoulder joints. The positions of the center of mass with respect to the heels were 103.4 & 4.0 cm during depression and 104.2 i 4.1 cm during elevation. The center of buoyancy shifted toward the head more during elevation (105.9 i 4.2 cm) than during depression (105.1 * 4.1 em) during neutral buoyancy. Also, the distance between the centers of buoyancy and mass was smaller during elevation (1.60 * 0.20 cm) than during depression (1.66 * 0.21 cm) with 1% significance. This study suggests a possible effect of the shoulder position on maintaining a horizontal position

Efficacy of Flotation Aids Attached to the Pelvis and Thighs of Beginning Swimmers

The study aimed to experimentally verify the efficacy of wearing flotation aids to add buoyancy from the pelvis to the side of the thigh on the swimming performance of beginning swimmers who were capable of swimming around 25 meters at a time. The study recruited seven male university students who were members of the Physical Education Department and who lacked experience in specialized swimming instruction. The study found statistical difference in prone flotation between the use of flotation aids (7.27±1.92 sec) and without flotation aids (3.50±0.72 sec). During swimming for distance in a 5 min. swim test, we found statistical difference between the use of flotation aids (185.0±29.6 m) and without flotation aids (172.6±24.4 m). Moreover, no overall differences in stroke length and stroke rate were observed flotation and no flotation use