Characterization of Web server workload

Realistic and formal mathematical description of web-server workload forms a fundamental step in the design of synthetic workload generators, capacity planning and accurate predictions of performance measures. In this thesis we perform detailed empirical analysis of the web workload by analyzing access logs of nine web-servers. Unlike most previous work that focused on request-based workload characterization, we analyze both request and session characteristics. We perform rigorous statistical analysis to determine the self-similarity of web traffic and heavy-tailedness of the distribution of different session parameters. Our analysis shows that web traffic is self-similar and the degree of self-similarity is proportional to the workload intensity. To increase the confidence in our analysis we use several methods for estimating the degree of self-similarity and heavy-tailedness. Additionally we point out specific problems associated with these methods. Finally, we analyze the impact of robots sessions on the heavy-tailedness of the distribution

Comparison of pain control between lidocaine and prilocaine spray (TEMPE) versus lidocaine gel in the treatment of premature ejaculation: a prospective randomized controlled trial in a tertiary care centre

Background: Premature ejaculation is the most common cause of sexual dysfunction. There is no consensus on the treatment protocol due to poor understanding of the underlying mechanisms. Therefore, the present pilot study was conducted to compare the efficacy of topical eutectic mixture for premature ejaculation (TEMPE) spray with lidocaine gel for the treatment of premature ejaculation. Methods: After obtaining ethics approval and written informed consent, 100 patients meeting the inclusion and exclusion criteria were included. Baseline values of intravaginal ejaculation time (IELT) and international index of erectile function (IIEF) were recorded. Patients were randomly assigned into group A (lidocaine plus prilocaine spray) and group B (lidocaine gel). After 4 weeks of treatment IELT and IIEF score were recorded. The findings were noted and analysed. Results: Both the groups were similar in terms of demographic and baseline characteristics. There was a significantly higher improvement in IELT and IIEF score following treatment in group A as compared to group B. The incidence of side effects was lower in group A as compared to group B. Conclusions: We recommend that the use of TEMPE spray for the treatment of premature ejaculation as it is better than lidocaine gel

A clinical comparison of bupivacaine versus lidocaine for maxillary and mandibular anesthesia in oral surgery

Background: The purpose of this study was to compare the efficacy of bupivacaine and lignocaine for the surgical removal of mandibular impacted third molars. The study focused on pain experience and analgesic consumption. Materials and Methods: Forty patients, aged between 18-45yrs, were selected each with bilateral mandibular third molar indicated for extraction under local anesthesia. The mean age of the patients was 24 years and the ratio of males to females was 23 to 17. All patients randomly received lignocaine 2% with adrenaline 1:200,000 for one extraction and bupivacaine 0.5% with adrenaline 1:200,000 for the other sided extraction. Results: The visual analog and global pain scores for both groups were outlined. There was no significant difference between bupivacaine and lidocaine for intra-operative pain experience. Conclusion: There were no signs or symptoms of central nervous system or cardiovascular system toxicity in this study and the routine use of bupivacaine in oral surgery would appear to be a safe and effective method of producing adequate surgical analgesia and an increased post-operative pain free period

A clinical comparison of bupivacaine versus lidocaine for maxillary and mandibular anesthesia in oral surgery

Background: The purpose of this study was to compare the efficacy of bupivacaine and lignocaine for the surgical removal of mandibular impacted third molars. The study focused on pain experience and analgesic consumption. Materials and Methods: Forty patients, aged between 18-45yrs, were selected each with bilateral mandibular third molar indicated for extraction under local anesthesia. The mean age of the patients was 24 years and the ratio of males to females was 23 to 17. All patients randomly received lignocaine 2% with adrenaline 1:200,000 for one extraction and bupivacaine 0.5% with adrenaline 1:200,000 for the other sided extraction. Results: The visual analog and global pain scores for both groups were outlined. There was no significant difference between bupivacaine and lidocaine for intra-operative pain experience. Conclusion: There were no signs or symptoms of central nervous system or cardiovascular system toxicity in this study and the routine use of bupivacaine in oral surgery would appear to be a safe and effective method of producing adequate surgical analgesia and an increased post-operative pain free period

A clinical comparison of bupivacaine versus lidocaine for maxillary and mandibular anesthesia in oral surgery

Background: The purpose of this study was to compare the efficacy of bupivacaine and lignocaine for the surgical removal of mandibular impacted third molars. The study focused on pain experience and analgesic consumption. Materials and Methods: Forty patients, aged between 18-45yrs, were selected each with bilateral mandibular third molar indicated for extraction under local anesthesia. The mean age of the patients was 24 years and the ratio of males to females was 23 to 17. All patients randomly received lignocaine 2% with adrenaline 1:200,000 for one extraction and bupivacaine 0.5% with adrenaline 1:200,000 for the other sided extraction. Results: The visual analog and global pain scores for both groups were outlined. There was no significant difference between bupivacaine and lidocaine for intra-operative pain experience. Conclusion: There were no signs or symptoms of central nervous system or cardiovascular system toxicity in this study and the routine use of bupivacaine in oral surgery would appear to 60 be a safe and effective method of producing adequate surgical analgesia and an increased post-operative pain free period

A clinical comparison of bupivacaine versus lidocaine for maxillary and mandibular anesthesia in oral surgery

Background: The purpose of this study was to compare the efficacy of bupivacaine and lignocaine for the surgical removal of mandibular impacted third molars. The study focused on pain experience and analgesic consumption. Materials and Methods: Forty patients, aged between 18-45yrs, were selected each with bilateral mandibular third molar indicated for extraction under local anesthesia. The mean age of the patients was 24 years and the ratio of males to females was 23 to 17. All patients randomly received lignocaine 2% with adrenaline 1:200,000 for one extraction and bupivacaine 0.5% with adrenaline 1:200,000 for the other sided extraction. Results: The visual analog and global pain scores for both groups were outlined. There was no significant difference between bupivacaine and lidocaine for intra-operative pain experience. Conclusion: There were no signs or symptoms of central nervous system or cardiovascular system toxicity in this study and the routine use of bupivacaine in oral surgery would appear to be a safe and effective method of producing adequate surgical analgesia and an increased post-operative pain free period