In order to achieve the stated goal of reducing the final closing procedure time cycle for construction projects at the Texas Department of Transportation (TxDOT) Odessa District, several standard operating procedures (SOPs) for project construction control and management had to be revised. Seemingly unrelated tasks created posterior chains of events that resulted in bottlenecks in the process and delayed final project closing. Four specific SOPs were identified and analyzed to determine which tasks required modification and what was expected from these modifications. A mission for each specified SOP was conceived and written to give a clear view of the intent of the procedure. Afterwards, district policies were drafted to provide the means to fulfill the intent. The procedural changes, compatible with TxDOT statewide procedures, allowed the time spent in the processes to remain the same but redistributed it to reduce the end-loading of the control process. The new SOPs require an even time distribution cyclically throughout the project. Control procedures are done only once, shortening the final closing procedure for projects by doing one-time, short, cyclical, consecutive control tasks of the same procedure throughout the life of the project, rather than doing some of them once cyclically and then again at the closing procedure and others just at the closing procedure. These changes resulted in a shorter end-cycle time, which substantially reduced the final closing procedure time for each project, without affecting the integrity and safeguards of the project. The changes resulted in more efficient and timely financial, managerial, and engineering control of projects. The procedures revised were (1) Review and Approval of Change Orders; (2) Review and Approval of Monthly Progress Estimates; (3) Review and Approval of Interim and Final Audits and Final Estimate; and (4) Storm Water Pollution Prevention Plans (SW3P) Records Management and Auditing Procedures.

Application performance on modern processors has become increasingly dictated by the use of on-chip structures, such as caches and look-aside buffers. The hierarchical (multi-leveled) design of processor structures, the ubiquity of multicore processor architectures, as well as the increasing relative cost of accessing memory have all contributed to this condition. Our thesis is that operating systems should provide services and mechanisms for applications to more efficiently utilize on-chip processor structures. As such, this dissertation demonstrates how the operating system can improve processor efficiency of applications through specific techniques. Two operating system services are investigated: (1) improving secondary and last-level cache utilization through a run-time cache filtering technique, and (2) improving the processor efficiency of system intensive applications through a new exception-less system call mechanism. With the first mechanism, we introduce the concept of a software pollute buffer and show that it can be used effectively at run-time, with assistance from commodity hardware performance counters, to reduce pollution of secondary on-chip caches. In the second mechanism, we are able to decouple application and operating system execution, showing the benefits of the reduced interference in various processor components such as the first level instruction and data caches, second level caches and branch predictor. We show that exception-less system calls are particularly effective on modern multicore processors. We explore two ways for applications to use exception-less system calls. The first way, which is completely transparent to the application, uses multi-threading to hide asynchronous communication between the operating system kernel and the application. In the second way, we propose that applications can directly use the exception-less system call interface by designing programs that follow an event-driven architecture.

Application performance on modern processors has become increasingly dictated by the use of on-chip structures, such as caches and look-aside buffers. The hierarchical (multi-leveled) design of processor structures, the ubiquity of multicore processor architectures, as well as the increasing relative cost of accessing memory have all contributed to this condition. Our thesis is that operating systems should provide services and mechanisms for applications to more efficiently utilize on-chip processor structures. As such, this dissertation demonstrates how the operating system can improve processor efficiency of applications through specific techniques. Two operating system services are investigated: (1) improving secondary and last-level cache utilization through a run-time cache filtering technique, and (2) improving the processor efficiency of system intensive applications through a new exception-less system call mechanism. With the first mechanism, we introduce the concept of a software pollute buffer and show that it can be used effectively at run-time, with assistance from commodity hardware performance counters, to reduce pollution of secondary on-chip caches. In the second mechanism, we are able to decouple application and operating system execution, showing the benefits of the reduced interference in various processor components such as the first level instruction and data caches, second level caches and branch predictor. We show that exception-less system calls are particularly effective on modern multicore processors. We explore two ways for applications to use exception-less system calls. The first way, which is completely transparent to the application, uses multi-threading to hide asynchronous communication between the operating system kernel and the application. In the second way, we propose that applications can directly use the exception-less system call interface by designing programs that follow an event-driven architecture.

Magistro darbe yra suformuluotos Lietuvoje veikiančių komercinių bankų veiklos efektyvumo ir rizikos valdymo problemos. Esant stipriai konkurencijai bankų sektoriuje, bankai priversti daugiau dėmesio skirti veiklos efektyvumo didinimui bei rizikos valdymui. Darbe išanalizuoti ir susisteminti įvairių Lietuvos ir užsienio autorių teoriniai bei praktiniai komercinio banko veiklos efektyvumo ir rizikos vertinimo metodai. Vertinami AB Šiaulių banko veiklos efektyvumo bei rizikos valdymo rodikliai, taikant Bernstein, Du Pont metodus. Hipotezė, kad komercinio banko rizikos valdymo įtaka veiklos efektyvumui priklauso nuo tinkamai parinktos banko valdymo strategijos pasitvirtino pritaikius veiklos efektyvumo ir rizikos rūšių jautrumo analizę. / Of the Master's work is the formulation of commercial banks operating in Lithuania operational efficiency and risk management issues. With strong competition in the banking sector, banks are forced to pay more attention to operational efficiency and risk management. Work to analyze and structure the various Lithuanian and foreign author's theoretical and practical commercial bank efficiency and risk assessment methods. AB Siauliu bank evaluated the effectiveness of the Bank's activities and risk management indicators, the application of Bernstein, Du Pont methods. The hypothesis that commercial bank risk management activities influence the effectiveness depends on proper selection of the bank management strategy to be adaptedto the effectiveness and risks of sensitivity analysis.

Health Sciences Centre (HSC) in Winnipeg is the major healthcare facility serving Manitoba, Northwestern Ontario, and Nunavut. An evaluation of HSC’s adult surgical patient flow revealed that one major barrier to smooth flow was their Operating Room (OR) scheduling system. This thesis presents a new two-stage elective OR scheduling system for HSC, which generates weekly OR schedules that reduce artificial variability in order to facilitate smooth patient flow. The first stage reduces day-to-day variability while the second stage reduces variability occurring within a day. The scheduling processes in both stages are mathematically modelled as multi-objective optimization problems. An attempt was made to solve both models using lexicographic goal programming. However, this proved to be an unacceptable method for the second stage, so a new multi-objective genetic algorithm, Nondominated Sorting Genetic Algorithm II – Operating Room (NSGAII-OR), was developed. Results indicate that if the system is implemented at HSC, their surgical patient flow will likely improve.

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