41 research outputs found
Antibacterial and Antimutagenic activities of the extracts from the flowers of Peltophorum ferrugineum
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
The Influence of Organizational Form on Managerial Discretion.
No full textIn this dissertation, I explore how managerial discretion varies under different organizational forms, that is, the formal structures by which the behavior of members of firms is coordinated and controlled. In the first study, I examine the effect of ownership type (for-profit, government, and not-for-profit) on managerial discretion. I argue that organizational goals that differ across ownership types affect organizational constraints, which, in turn, determine the level of managerial discretion. Specifically, I hypothesize that the level of managerial discretion will be highest in for-profit, lowest in government, and lie somewhere in between in not-for-profit, organizations. The first study involves both quantitative and qualitative analyses. The study context is the US hospital industry, in which large medical malpractice lawsuits trigger changes in behavior among doctors who want their choices better defended in court. I study the effect of ownership type by examining how the effects of malpractice lawsuits on hospital expenditures differ across ownership types. In the second study, I examine differences in levels of managerial discretion in the firm relative to the market. This study examines physician discretion in the context of the US hospital industry, specifically in terms of the effect of physician-hospital integration on physician discretion. The research design is a multiple-case, inductive study involving two types of physician-hospital arrangements: an employed model and private practice. This research design enables me to investigate how physician discretion varies across hospital boundaries and understand what organizational costs are incurred after integration.PhDBusiness AdministrationUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/97964/1/naeun_1.pd
Make Hay While the Sun Shines or be More Loyal Than the King? The Impact of External Labor Markets on the Technological Search Process within Firms.
No full textPast research on technological search has extensively studied the consequences of searching in different loci and in different manners. Less attention in given to the antecedents of the search process: why do researchers search in the way that they do? This dissertation attends to the career concerns of the researchers and investigates how the state of external labor market influences the way in which researchers conduct their technological search, i.e. where they look for technological ideas for innovations: inside the firm or outside; in familiar or new technological domains. I argue that when external job opportunities for researchers decline, they pay greater attention to knowledge flows inside their firms and build on ideas from inside the firm. Further, they expand their search into new technological domains to broaden their skills. On the other hand, when external opportunities increase, contributing to firms' existing research trajectories becomes less important and returns to specialization increase. I also examine the moderating influence of two individual specific factors - the specialization and the relative position of researchers, and two firm specific factors - the division of labor in the firm and the technological prominence of the firm. Using a comprehensive dataset of patents filed by the public electronic firms from 1992 to 2002, I construct an individual inventor specific measure of external job opportunities based on the R&D investments of all external firms in the technological domains that the inventor has worked on during the previous three years and relate it to her technological search. The tests show that greater growth in job opportunities is associated with reduced technological breadth of search. This effect is reduced by a researcher's relative position in the firm and increased when the firm's researchers are more specialized. Contrary to expectation this effect is increased with a firm's technological prominence. The tests provide mixed support for the prediction that greater growth in opportunities is associated with increased organizational breadth of search. I find strong support for the predictions that this effect is increased when the firm's researchers are more specialized and with the technological prominence of the firm.PhDBusiness AdministrationUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/86274/1/vtandon_1.pd
Exchange bias effect in Ti doped nanocrystalline SrFeO3-δ
No full textMaterials of Ti doped nanocrystalline SrFeO3-δ were synthesized through solid state reaction. Detailed magnetization measurements were carried out in zero field cooled (ZFC) and field cooled (FC) conditions. Compounds of SrFe1-xTixO3-δ (x = 0.1 to 0.3) are found to be spin glass and parent compound is a helical antiferromagnet. Non magnetic Ti4+ reduces the strength of exchange interactions and the curvature of hysteresis is changed towards concave nature. Exchange bias is observed below the peak temperature (irreversibility in magnetization (TIrr)) in ZFC-FC of SrFe1-xTixO3-δ (x = 0 to 0.3). The coercivity and exchange bias field values are found to be decreases with increase in temperature. Observed exchange bias effect is attributed to competition between antiferromagnetic superexchange and ferromagnetic double exchange interactions
