Robert H. Smith School of Business

Permanent URI for this communityhttp://hdl.handle.net/1903/1584

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Start date: 1990End date: 1999

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Now showing 1 - 6 of 6
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    Modeling the Determinants of Satisfaction and Commitment in Buyer-Seller Relationships in the Less-Than-Truckload Segment of the Motor Carrier Industry
    (1992) Jarrell, Judith L.; Corsi, Thomas M.; Transportation, Business and Public Policy; Digital Repository at the University of Maryland; University of Maryland (College Park, MD)
    Buyer-seller relationships in the U.S. are changing with the advent of closer, longer-term alliances. In establishing and maintaining these alliances, firms need to understand those factors which determine satisfaction and commitment in relationships. Drawing on theoretical and conceptual work based on Resource Dependence Theory and Social Exchange Theory, this dissertation focused on the buyer-seller dyad in the less-than-truckload segment of the motor carrier industry. The buyer-seller dyads in this segment are particularly interesting since deregulation has necessitated dramatic changes in these relationships. A system of structural equations modeled the determinants of shipper's satisfaction and commitment in these dyads using a correlation input matrix. The network of influencing factors included: carrier's power, shipper's power, comparison level given an alternative and trust. The analysis allowed an in-depth discussion of the relative importance of each of these constructs and found both shipper's power and comparison level given an alternative to have a great influence on satisfaction; satisfaction and trust significantly affect commitment, with satisfaction being more important, relatively speaking. The managerial implications of this research focused on understanding those factors which are most important in creating satisfaction and commitment in buyer-seller relationships. Carrier's need to dedicate personnel to key accounts in order to display initiative in problem solving and responsiveness to inquiries in order to enhance shipper's satisfaction and willingness to commit to a long-term relationship. Other suggested programs include offering customer-oriented programs such as 1-800 numbers, increased flexibility in pick-up and delivery times, and a willingness to forego some accessorial charges.
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    The Backhaul Problem and Related Topics in Vehicle Routing
    (1991) Casco, Daniel Orlando; Golden, Bruce L.; Business and Management; Digital Repository at the University of Maryland; University of Maryland (College Park, Md)
    The problem studied in this dissertation is a variation of the classical vehicle routing problem (VRP) that has received limited research attention, and concerns the routing of vehicles over a set of mixed customers; that is, some customers are delivery or linehaul points but others are pickup or backhaul points. In contrast to deliveries, when a vehicle services a pickup point, product, bound for the distribution center, is loaded on the truck. Practical considerations usually dictate that the number of backhauls per route is small and they are serviced near the end of a route. The vehicle routing problem with backahuls (VRPB) can be stated as follows: Find a set of vehicle routes that service the delivery and backhaul customers such that vehicle capacity is not violated and the total distance traveled is minimized. In this dissertation, we examine three real-world routing applications with backhauls and several first-generation algorithms designed to solve VRPBs. The key dissertation research objective is to develop new heuristics to solve the VRPB that redress the shortcomings of existing solution methods in dealing with real-world considerations. The four new heuristics developed allow common carrier or supplier deliveries, dedicated backhaul routes, and mixed routes. In order to evaluate their performance, the heuristics were coded in Pascal and a series of computation experiments were performed on a Macintosh platform. The experiments consisted of generating twenty seven hundred random problems covering a range of possible combinations of critical problem parameters. These problems were solved by the heuristics and the main findings are as follows: 1) on average, the new heuristics outperformed heuristics which allow only pure delivery and mixed routes, 2) the effectiveness of the new procedures was found to vary with changes in problem size, the percentage of backhaul nodes, and the delivery node concentration region, 3) the effective of the new procedures was found not to vary with changes in the cost to insert backhaul location in mixed routes, or with changes in common carrier costs, and 4) the execution times to solve 40-node and 100-node problems was found to be less than a minute.
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    The Effects of Appropriately Participative Leadership on the Core Dimensionis of Climate
    (1990) Kidder, Pamela J.; Schneider, Benjamin; Psychology & Business and Management; Digital Repository at the University of Maryland; University of Maryland (College Park, Md)
    A field experiment was conducted to determine some effects of the appropriateness of participative leadership styles on the core dimensions of climate. Climate is a construct that has received considerable attention in organizational research. The research on Climate has revealed a core set of issues or dimensions that appear to be useful for capturing employees' perceptions across all or most organizations. Proposed core dimensions of climate have included role stress or harmony in the work environment, job challenge and autonomy, leadership facilitation and support, and workgroup warmth, empathy and cooperation. I hypothesized that leadership style would affect employees' perceptions of these core dimensions of climate. The literature in psychology and organizational behavior shows significant agreement regarding the potential effect of leadership style on climate, but little empirical work has been conducted in this area. The particular leadership style I studied concerned the appropriateness of participativeness of leaders' decision making styles. I carried out a field experiment, using a two group pre- and post- experimental design. The experimental manipulation was a training program in appropriate participative decision making, with supervisors randomly assigned to a training or no training control group. Pre- and post- measures of the core dimensions of climate and decision making style were collected prior to and following the training. Appropriate participativeness in decision making (Vroom & Jago, 1988) was found to predict the three core dimensions of role stress, leadership facilitation and support, and workgroup cooperation, friendliness, and warmth. The quality of the supervisor-subordinate relationship, based on vertical dyad linkage theory, was found to contribute to the prediction of the core climate dimension of role stress. It was concluded that leadership style has an effect on employees' perception of some, but not all of the core dimensions of climate. Implications of these results for research and practice regarding climate and leadership were explored.
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    Decomposing Charismatic Leadership: The Effects of Leader Content and Process on Follower Performance, Attitudes, and Perceptions
    (1992) Kirkpatrick, Shelley Ann; Locke, Edwin; Business and Management; Digital Repository at the University of Maryland; University of Maryland (College Park, Md)
    Leadership entails both content and process elements, e.g., what the leader says and how the leader says it. For example, charismatic leaders are theorized to communicate and implement a vision (content) with an enthusiastic communication sty l e (process). In a laboratory experiment with manipulated independent variables and a simulated task, this dissertation separately examined the content and process components of charismatic leadership on performance and attitudes. The content aspect was separated into two parts, vision (versus no vision) and implementation of the vision through task strategies (versus no task strategies). Process was manipulated as enthusiasm level (low versus high). Thus, a 2 x 2 x 2 design was employed. Two trained actors, one male and one female, played the role of leader, a CEO/President of a local printing company. Upper-level business students served as participants and performed a binder assembly task. Students completed questionnaires before each session and at the end of the experiment to assess how they are influenced by the leader. Results indicated that content affected performance and many attitudes and perceptions. Process did not affect performance and affected only a few attitudes and perceptions. Exploratory analyses showed that self-set goals and self-efficacy served as mediators between the content variables and performance. Theoretical, methodological, and practical implications are discussed.
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    THE EFFECTS OF SUPERLEADERSHIP TRAINING ON LEADER BEHAVIOR, SUBORDINATE SELF-LEADERSHIP BEHAVIOR, AND SUBORDINATE CITIZENSHIP
    (1993) Cox, Jonathan F.; Sims, Henry P.; Management & Organization; Digital Repository at the University of Maryland; University of Maryland (College Park, Md)
    A field experiment was conducted to assess the effects of SuperLeadership training on trainee leadership behavior, subordinate self-leadership behavior, and subordinate citizenship. The experiment involved approximately 70 focal training participants and 500 subordinates. Participants were assigned to two conditions: a) a training condition, in which participants received training immediately after baseline questionnaire data were collected; and b) a comparison condition, where participants did not receive training until after a second set of data had been collected to assess change. The lag between the first and second rounds of data collection was 10-weeks. Although data analysis confirmed the psychometric adequacy of the research questionnaires, the broad finding of the study was that the leadership behavior of participants in the training group did not change as a result of the training. Subordinate, self-leadership behavior and citizenship also did not appear to change as a result of the training. However, supervisors of the participants reported increased performance of the trainees as a result of the training. This suggested that supervisors may have seen early evidence of positive change as a result of the training. Subsequent investigation determined that although the training was perceived as effective by the participants, reductions-in-force in the host organization were perceived as inhibiting participants' ability to apply the training. Speculation concerning the apparent lack of change explored aspects of the experiment itself, the training, and the transfer setting in the host organization.
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    Sensitivity Analysis for Monte Carlo Simulation of Option Pricing
    (1995) Fu, Michael C.; Hu, Jian-Qiang
    Monte Carlo simulation is one alternative for analyzing options markets when the assumptions of simpler analytical models are violated. We introduce techniques for the sensitivity analysis of option pricing which can be efficiently carried out in the simulation. In particular, using these techniques, a single run of the simulation would often provide not only an estimate of the option value but also estimates of the sensitivities of the option value to various parameters of the model. Both European and American options are considered, starting with simple analytically tractable models to present the idea and proceeding to more complicated examples. We then propose an approach for the pricing of options with early exercise features by incorporating the gradient estimates in an iterative stochastic approximation algorithm. The procedure is illustrated in a simple example estimating the option value of an American call. Numerical results indicate that the additional computational effort required over that required to estimate a European option is relatively small.