Doctor of Business Administration, Cleveland State University, 2023, Monte Ahuja College of Business

Considered typical in the workplace, Organizational Politics (OP) is a well-known workplace stressor that causes harmful consequences. Researchers pay attention to how individuals respond to OP based on their perception of organizational politics (POPS). Drawing on the Transactional Theory of Stress and Coping, POPS triggers a primary appraisal that a work context is threatening and puts pressure on employees to engage or disengage in politicking to meet their goals resulting in emotional strain. However, OP are not always perceived as a threat. Some individuals can perceive them as an opportunity. This dissertation investigates cultural orientation as the lens that affects how individuals perceive POPS and, in turn, how cultural orientation affects variations in the amount of emotional felt strain. Specifically, this research focuses on Vertical and Horizontal Individualism and Collectivism as dimensions of cultural orientation. As our workplace increases in global diversity, these differences become even more relevant (Mackay, 2004). Drawing on Conservation of Resource Theory (COR), emotional strain caused by POPS often requires additional coping efforts which are taken away from resources that could otherwise be devoted to job performance. Perceiving high social support availability encourages confident self-mastery of problems and enhances their ability to cope with situational stress. However, in the political environment, support at work may be limited or competitive in nature. This research investigates how social support from outside the employee's work domain (e.g., friends, families, or significant others) can buffer the negative effect of job strain on employee attitudes (job satisfaction and turnover intention). Data were collected from a Vietnamese education company. There were significant relationships between POPS, Job Strain, Job Satisfaction, and Turnover Intentions. Culture and Social Support were not significant moderators; however, thi (open full item for complete abstract)

Committee: Vickie Gallagher (Committee Chair); Liam Maher (Committee Member); Sorin Valcea (Committee Member); Ping Deng (Committee Member) Subjects: Management

Doctor of Philosophy, The Ohio State University, 2023, Chemistry

Carbon dioxide (CO2) is one of the primary greenhouse gases believed to be responsible for global warming because of the world's continued dependence on the combustion of fossil fuels for economic growth. Thus, ongoing research is geared towards new materials that can capture and transform CO2 into alternative fuels and feedstock chemicals like formic acid, methanol, ethanol, methane, carbon monoxide, etc. The capture of CO2 has been widely studied using various porous materials like covalent organic frameworks (COFs), porous organic polymers (POPs), etc. In addition, the catalytic transformation of CO2 using homogenous transition metal catalysts and hydrogen (H2) as a reductant has proven effective. However, this transformation is thermodynamically unfavorable, and relatively high pressures of H2 are required. On the other hand, the hydrosilylative reduction of CO2 to formates and methanol is a thermodynamically favorable approach. However, developing heterogeneous catalysts that perform this chemical transformation with high catalytic efficiencies is rare. POPs and COFs are a class of porous organic polymers that have emerged as promising platforms for heterogeneous catalytic applications due to their high surface areas and superior chemical stabilities. In chapter 2, we report the hydrothermal synthesis, characterization, and hydrosilylative reduction of CO2 to potassium formate and methanol using a benzobisthiazole(BBT)-linked Co(II)-porphyrin-based POP (Co-BBT-POP). The Co-BBT-POP is capable of CO2 capture, providing uptake capacities of 158 mg/g and 102 mg/g at 273 and 298 K, respectively. Co-BBT-POP exhibits outstanding recyclability up to five times without significant loss in catalytic activity for both catalytic systems (formate and methanol). Furthermore, in Chapter 4, we explore the possibility of two-dimensional (2D) N-ethylpyridinium COFs to convert CO2 to formic acid under metal-free conditions using hydrosilanes as the reductant. Such systems are gr (open full item for complete abstract)

Committee: Psaras McGrier (Advisor); Shiyu Zhang (Committee Member); Christine Thomas (Committee Member) Subjects: Chemistry; Inorganic Chemistry; Organic Chemistry

MS, University of Cincinnati, 2019, Engineering and Applied Science: Materials Science

The environmental report published by the United Nations in 2018 paints a very grim picture of our environmental health around the world. Persistent organic pollutants (POPs) like polychlorinated biphenyls (PCBs) are one of the major causes of this environmental degradation. The Stockholm Convention is a global treaty that seeks to contain additional contamination of environment with POPs and, wherever feasible, remediate the contamination that has already occurred. Although the production of PCBs has been banned around the world, affordable and effective PCB cleanup technologies are still in high demand, as existing treatment technologies are very costly. The project studies a low temperature removal technology using catalytic hydrogenation. Two types of PCBs were studied in a flask system, 3 PCB and 2, 3 PCB. The catalyst studied for the hydro de-chlorination reaction is palladium on activated carbon and triethylamine (Pd/C and Et3N). Parameters such as reaction time, gas flow rate and catalyst dose were investigated. In addition, the kinetics of the hydro de-chlorination reactions were studied, which is essential in large scale commercial applications. Reaction rate constants at different temperatures viz. 20C (room temperature), 50C and 80C, were investigated to better understand the activation energy. The de-chlorination rates at different temperatures were compared, which suggested a different optimum temperature for the hydro de-chlorination of 3 PCB and 2,3 - PCB. The Ea was 4.4 kJ/mole and 16.8 kJ/mole for 3 PCB and 2, 3 PCB respectively. The low Ea indicates that the reactions may be controlled by mass transfer of hydrogen.

Committee: Mingming Lu Ph.D. (Committee Chair); Gregory Beaucage Ph.D. (Committee Member); Fu-Min Ren D.S. (Committee Member); Zhiqiang (Mark) Wang Ph.D. (Committee Member) Subjects: Environmental Science