Fundamental Options for Designing Transmission Systems Supplying Metropolitan Centers

Transgression networks in metropolitan centers need to supply a large quantity of power in a reliable manner to vital loads that are located within. A transmission network supplying such an important area must have a high standard of reliability. Therefore, those transmission systems require a special form of redundancy in order to prevent sustained outages after severe contingencies such as multiple faults. This paper outlines different forms of redundancy, and the fundamental options for designing a metropolitan network based on different forms of redundancy are illustrated. Relative merits and drawbacks of network designs based on each form of redundancy are also shown.

Evaluation of the Impact of Refined Quality Control Management Model on the Qualified Rate of Disinfection and Sterilization of Surgical Instruments in the Sterilization Supply Center

Objective:To evaluate the application value of a refined quality control management model for a sterilization supply center.Methods:A retrospective analysis was conducted on the work situation of the sterilization supply center from January 2021 to January 2023.The work situation before January 31,2022,was classified as the control group;a routine quality control management model was implemented,and the work situation after January 31,2022,was classified as the observation group.The quality of medical device management and department satisfaction between the two groups were compared.Results:The timely recovery and supply rate,classification and cleaning pass rate,disinfection pass rate,packaging pass rate,sterilization pass rate,and department satisfaction score in the observation group were all higher than those of the control group(P<0.05).Conclusion:Implementing a refined quality control management model in the sterilization supply center can improve the quality management level of medical devices and department satisfaction and is worthy of promotion.

Location Problem of Air Materials Supply Center for Air Force

Based on the analysis of three influencing factors on the air material supply center location, the location model of air material supply center was established. By solving the model, the rational supply center of air materials was also determined.

Impact of PDCA Cycle Combined with Instrument Mapping on Sterilization and Supply of Surgical Instruments

Objective:To explore the effect of applying the Plan-Do-Check-Act(PDCA)cycle combined with instrument mapping to manage surgical instruments in a hospital sterilization supply center.Methods:A total of 600 surgical instruments in a hospital’s surgical instrument sterilization and supply management center were sampled and grouped based on the introduction of the PDCA cycle combined with instrument mapping.The control group included 300 surgical instruments subject to routine sterilization management from November 2023 to January 2024.The observation group included 300 surgical instruments managed with the PDCA cycle combined with instrument mapping from February 2024 to April 2024.The quality of surgical instrument management,incidence of adverse events,and other indicators were compared between the two groups.Results:The observation group demonstrated significantly higher scores in management quality indices compared to the control group,with scores for disassembly and assembly(93.28±1.57 vs.87.41±1.48),cleaning(95.04±2.08 vs.90.23±2.12),disinfection and sterilization(95.33±1.27 vs.91.95±1.39),waste disposal(93.26±1.24 vs.89.65±1.18),packaging and traceability(94.35±1.74 vs.92.23±1.65),and issuance and recycling(95.79±1.72 vs.90.22±1.81)(all P<0.05).The observation group reported two adverse events(one incomplete instrument specification and one case of instrument package overweight)with an incidence rate of 0.67%.Conversely,the control group reported six adverse events(including shortages,incomplete specifications,unqualified sterilization,defective instruments,untimely or incorrect delivery,and overweight instrument packages)with an incidence rate of 3%,demonstrating statistically significant differences between groups(P<0.05).Conclusion:Applying the PDCA cycle combined with instrument mapping for surgical instrument management in hospital sterilization supply centers significantly improves management quality and reduces adverse events.Its application is recommended for wider adoption in hospital sterilization supply centers.