Test coverage analysis is a structural testing technique, which helps to evaluate the sufficiency of software testing. This letter presents two test generation algorithms based on binary decision diagrams to produce t...Test coverage analysis is a structural testing technique, which helps to evaluate the sufficiency of software testing. This letter presents two test generation algorithms based on binary decision diagrams to produce tests for the Multiple-Condition Criterion(M-CC) and the Modified Condition/Decision Criterion(MC/DC), and describes the design of the C program Coverage Measurement Tool (CCMT), which can record dynamic behaviors of C programs and quantify test coverage.展开更多
Objective: to explore the clinical significance of general anesthesia combined with epidural anesthesia in the treatment of hysteromyoma. Methods: 100 patients who underwent hysteromyomectomy in our hospital from Janu...Objective: to explore the clinical significance of general anesthesia combined with epidural anesthesia in the treatment of hysteromyoma. Methods: 100 patients who underwent hysteromyomectomy in our hospital from January 2019 to December 2020 were randomly allocated, 50 patients in each group. The general anesthesia group was all under general anesthesia, while the compound anesthesia group was under general anesthesia combined with epidural anesthesia. The vital signs of the two groups before tracheal intubation, immediately after tracheal intubation, at the time of skin incision, at the end of surgery and at the time of tracheal extubation were compared, and the incidence of postoperative complications was compared. Results: there was no significant difference in vital signs immediately before tracheal intubation between compound anesthesia group and general anesthesia group (P > 0.05). The vital signs of the compound anesthesia group were lower than those of the general anesthesia group immediately after tracheal intubation, at the time of skin incision, at the end of operation and at the time of tracheal extubation (P < 0.05). The incidence of postoperative complications in compound anesthesia group was lower than that in general anesthesia group (P < 0.05). Conclusion: compared with total anesthesia, general anesthesia combined with epidural anesthesia is effective in hysteromyoma surgery, which can effectively maintain good anesthetic effect and reduce the occurrence of complications. It is worthy of promotion and application.展开更多
The influences of second order Polarization Mode Dispersion (PMD) on light pulse are discussed from changing of the pulse shape and eye graph when considering second order PMD. The results by numerical simulation show...The influences of second order Polarization Mode Dispersion (PMD) on light pulse are discussed from changing of the pulse shape and eye graph when considering second order PMD. The results by numerical simulation show that the second-order PMD components associated with depolarization of the principal states can cause significant system impairments that cause overshoot at the edge of pulse. By the same time the compensation method for second-order PMD are also discussed by theoretically and experimentally. The experiment results show that it is very effective to compensate second order PMD by using two stage PMD compensator.展开更多
文摘Test coverage analysis is a structural testing technique, which helps to evaluate the sufficiency of software testing. This letter presents two test generation algorithms based on binary decision diagrams to produce tests for the Multiple-Condition Criterion(M-CC) and the Modified Condition/Decision Criterion(MC/DC), and describes the design of the C program Coverage Measurement Tool (CCMT), which can record dynamic behaviors of C programs and quantify test coverage.
文摘Objective: to explore the clinical significance of general anesthesia combined with epidural anesthesia in the treatment of hysteromyoma. Methods: 100 patients who underwent hysteromyomectomy in our hospital from January 2019 to December 2020 were randomly allocated, 50 patients in each group. The general anesthesia group was all under general anesthesia, while the compound anesthesia group was under general anesthesia combined with epidural anesthesia. The vital signs of the two groups before tracheal intubation, immediately after tracheal intubation, at the time of skin incision, at the end of surgery and at the time of tracheal extubation were compared, and the incidence of postoperative complications was compared. Results: there was no significant difference in vital signs immediately before tracheal intubation between compound anesthesia group and general anesthesia group (P > 0.05). The vital signs of the compound anesthesia group were lower than those of the general anesthesia group immediately after tracheal intubation, at the time of skin incision, at the end of operation and at the time of tracheal extubation (P < 0.05). The incidence of postoperative complications in compound anesthesia group was lower than that in general anesthesia group (P < 0.05). Conclusion: compared with total anesthesia, general anesthesia combined with epidural anesthesia is effective in hysteromyoma surgery, which can effectively maintain good anesthetic effect and reduce the occurrence of complications. It is worthy of promotion and application.
文摘The influences of second order Polarization Mode Dispersion (PMD) on light pulse are discussed from changing of the pulse shape and eye graph when considering second order PMD. The results by numerical simulation show that the second-order PMD components associated with depolarization of the principal states can cause significant system impairments that cause overshoot at the edge of pulse. By the same time the compensation method for second-order PMD are also discussed by theoretically and experimentally. The experiment results show that it is very effective to compensate second order PMD by using two stage PMD compensator.
