A data model supporting the unification of the management of temporal XML document databases and version control, i.e., a Temporal Version Data Model (TVDM), is proposed. TVDM is temporally change-centric and represen...
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Information technology is providing manufacturers with additional flexibility with regard to their supply chain network choices. Our research studies supply chain network organization structures categorized by the org...
Information technology is providing manufacturers with additional flexibility with regard to their supply chain network choices. Our research studies supply chain network organization structures categorized by the organic and mechanistic management control structures. The structural impacts on cost and fill rate performance are studied in two-echelon and two-supply-chain network organization models under different market coordination conditions using system dynamic simulations. Our results show significant effects of demand and network structural factors, and their interactions, on these measures. As demand becomes dynamic, the cooperative interaction model, where supply chains cooperate to satisfy customer demand, is found to have better system performance than the competitive supply chain model. The analysis also suggests that increasing the responsiveness at the downstream plant is particularly important to the overall system performance improvement.
Little is known about how diverse supply chains grow and adapt. We introduce a Complex Adaptive System approach for cultivating and analyzing supply chain networks. A simulation-based empirical model is developed for ...
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Little is known about how diverse supply chains grow and adapt. We introduce a Complex Adaptive System approach for cultivating and analyzing supply chain networks. A simulation-based empirical model is developed for studying this problem and preliminary analysis show time-varying emergence of diverse supply chains structures.
This research examines two concurrent computer deployments. Both achieved their goals within budget but one was considered a success and one was considered a failure. The critical decision points and impact between th...
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This research examines two concurrent computer deployments. Both achieved their goals within budget but one was considered a success and one was considered a failure. The critical decision points and impact between these projects suggests a role-based decision model in which bias affects the perception of technology deployment success. Scale does not appear to have affected this perception.
Design of effective management control systems (MCSs) of cooperative virtual supply chains is understudied. We explore the impact of differing MCSs in a virtual enterprise in 19,200 experimental runs. Results show tha...
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Design of effective management control systems (MCSs) of cooperative virtual supply chains is understudied. We explore the impact of differing MCSs in a virtual enterprise in 19,200 experimental runs. Results show that the "best" framework does not always perform better and, in certain circumstances, can be the least attractive option.
Due to a widely use of XML language in various application domains, a well-established mechanism for the definition and enforcement of security controls on specific accesses to XML documents is demanded, in order to e...
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Phytoremediation, the use of plant systems for contaminant cleanup, is among the fastest growing areas of environmental remediation research, technology development, and implementation. The practice is facilitated by ...
Environmental regulators and other stakeholders prefer cleanup technologies that are successful, cost effective, and not disruptive to a site. Phytoremediation offers an appealing in situ option to managers of remedia...
In most universities the students relinquish their patent rights when they enroll in courses. A different model is proposed where the students can own their patents and receive 98% of the net income, or they can assig...
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In most universities the students relinquish their patent rights when they enroll in courses. A different model is proposed where the students can own their patents and receive 98% of the net income, or they can assign the rights to the university and receive generous royalty sharing.
The Lower Meghna River is the main river in the very important area of the Meghna estuary formed by the combined ocean outfall of the Padma - Meghna river system. This coastal region, which is considerably affected by...
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The Lower Meghna River is the main river in the very important area of the Meghna estuary formed by the combined ocean outfall of the Padma - Meghna river system. This coastal region, which is considerably affected by salinity, is extensive and inhabited by a large population. A number of irrigation and drainage projects, for instance the Chandpur irrigation project and the Meghna Dhonagoda project, are located in the vicinity of this river. The salinity levels always exceed an acceptable level for irrigation purpose during dry season. Studies of flow characteristics and salinity intrusion are, therefore, imperative for development of the irrigation systems. The river is substantially influenced by the tides from the Bay of Bengal when interacting with river flows resulted in a complicated pattern which is simplified to its interaction with individual constituents of tides obtained from harmonic analysis. The analytical solution of tide and river flow interaction from Vongvisessomjai and Rojanakamthorn(1989) is applied in this study with the assumption of consistency of cross - sectional area along the river. The obtained results are found to be quite good. Additionally, the analytical solution of salinity intrusion has been described in decomposing the steady state component of salinity from the unsteady component of tidal convection of salinity. Comparison between computed and observed average salinity along the river has been found in good agreement.
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