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Implementation and Analysis of the IP Measurement Protocol (IPMP)Carter, Steven Michael 14 December 2001 (has links)
The increased size and complexity of the Internet necessitates a more substantial measurement protocol than is currently available. This work explores the IP Measurement Protocol, providing background information, covering the development of a reference implementation, and finally comparing its accuracy, overhead, and ease of implementation to the current generation of protocols used in network measurement. Vmware, a hardware simulation application, was used to simulate a network on which to test IPMP, as well as compare it to current generation tools. Ipmp_ping, a tool written to test IPMP, was pitted against ping and traceroute in order to attain round trip time, one-way delay, and path discovery measurements. The accuracy and overhead of these tools were compared to each other. Although ipmp_ping had more overhead than ping when measuring round trip time, it was just as accurate and more capable. Ipmp_ping proved to be much more efficient than traceroute with similar accuracy. Overall, ipmp_ping was as accurate and had negligibly more or significantly less overhead than the tools it was compared to while providing more functionality and being easy to implement.
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Impact of Pretreatment Self-Perceived Quality of Life on Chronic Pain PatientsLaird, Michelle 01 January 2015 (has links)
Researchers and practitioners have developed new treatment options for chronic pain management based on biopsychosocial models of pain known as interdisciplinary pain management programs (IPMP), which involve interdisciplinary care that integrates physical treatment with emotional, environmental, behavioral, and cognitive interventions. Despite literature documenting the effectiveness of IPMPs, patients find it difficult to obtain authorization for these programs from third party insurance payers. The purpose of this quantitative causal comparative study was to explore whether a patient's perceived quality of life after injury but prior to treatment will affect his or her success in an IPMP. This study was based in the theoretical foundations of the biopsychosocial model of pain as well as positive psychology. Regression analysis and a test of mean differences were used to analyze the data to determine if there was a statistically significant difference in the perceived success in an IPMP program between patients who were part of a workers' compensation program (n = 77) and those who were not (n = 60). None of the null hypotheses could be rejected. Quality of Life Index (QOLI) scores were not predictive of success in an IPMP. None of the QOLI 16 subscales were predictive of success in an IPMP. Additionally, there was no significant difference between patients who were on workers' compensation and those who were not. This study contributes to the knowledge gap regarding appropriate screening tools for admittance into an IPMP. The results of this study can be used by practitioners who are trying to get patients approved for an IPMP and by third party insurance payer when determining which patients would most benefit from attending an IPMP.
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Impact of Pretreatment Self-Perceived Quality of Life on Chronic Pain PatientsLaird, Michelle 01 January 2015 (has links)
Researchers and practitioners have developed new treatment options for chronic pain management based on biopsychosocial models of pain known as interdisciplinary pain management programs (IPMP), which involve interdisciplinary care that integrates physical treatment with emotional, environmental, behavioral, and cognitive interventions. Despite literature documenting the effectiveness of IPMPs, patients find it difficult to obtain authorization for these programs from third party insurance payers. The purpose of this quantitative causal comparative study was to explore whether a patient's perceived quality of life after injury but prior to treatment will affect his or her success in an IPMP. This study was based in the theoretical foundations of the biopsychosocial model of pain as well as positive psychology. Regression analysis and a test of mean differences were used to analyze the data to determine if there was a statistically significant difference in the perceived success in an IPMP program between patients who were part of a workers' compensation program (n = 77) and those who were not (n = 60). None of the null hypotheses could be rejected. Quality of Life Index (QOLI) scores were not predictive of success in an IPMP. None of the QOLI 16 subscales were predictive of success in an IPMP. Additionally, there was no significant difference between patients who were on workers' compensation and those who were not. This study contributes to the knowledge gap regarding appropriate screening tools for admittance into an IPMP. The results of this study can be used by practitioners who are trying to get patients approved for an IPMP and by third party insurance payer when determining which patients would most benefit from attending an IPMP.
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Partial Encryption Of Video For Communication And StorageYuksel, Turan 01 September 2003 (has links) (PDF)
In this study, a new method is proposed to protect video data through partial encryption. Unlike previous methods, the bit rate of the encrypted portion can be controlled. In order to accomplish this task, a simple model for the time to break
the partial encryption by a chipertext-only attack is defined. Then, the encrypted bit budget distribution strategy maximizing the time subject to the bitrate constraint is found. An algorithm to estimate the model parameters is constructed and it isthen implemented over an MPEG-4 natural video codec together with the bit budget distribution strategy. The encoder is tested with various image sequences and the
output is analyzed.
In addition to the developed video encryption method, a file format is defined to store encryption related side information.
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