Business process reengineering effectiveness evaluation using CVP analysis

Актуальность исследования определяется потребностью компаний в инструментах повышения эффективности бизнеса. Одним из таких инструментов является реинжиниринг бизнес-процессов. Он используется, когда необходимо принять обоснованное решение о реорганизации деятельности: радикальных преобразованиях, реструктуризации бизнеса, замене действующих структур управления на новые и пр. Предприятие, стремящееся выжить или улучшить свое положение на рынке, должно постоянно совершенствовать технологии производства и способы организации деловых процессов. Но реинжиниринг на предприятиях не всегда приводит к повышению продуктивности деятельности компании, что обуславливает необходимость оценки его эффективности. Цель работы состоит в определении перспективности использования CVP-метода к оценке эффективности реинжиниринга бизнес-процессов. Методы исследования: абстракция, анализ, синтез, моделирование, системный подход, графический метод. Результаты. Определены критерии, которые будут являться основанием для принятия решения о реинжиниринге каждого отдельного бизнес- процесса и построении их очередности. К ним относятся: важность бизнес-процесса, его проблемность, возможность и стоимость проведения изменений бизнес-процесса. Изучены стандартные методы, которые можно применить, оценивая эффективность реинжиниринга бизнес-процессов. Показаны возможности применения CVP-метода к данной оценке через определение влияния проведенного реинжиниринга на общие показатели эффективности деятельности компании.The relevance of the research is determined by the requirement of the companies for instruments of increasein business performance. One of such tools is business process reengineering. It is used when it is necessary tomake justified decision on activity reorganization: radical transformations, business restructuring and replacementof the operating management structures on new ones. The enterprise aiming to survive or improve the market position shall enhance constantly production technologies and methods of business process organization. But the reengineering performed at the entities, not always leads to increase in productivity of company activity that causes need of its efficiency assessment. The main aim of the study is to determine using CVP method prospects to business process reengineering effectiveness evaluation. Methods: abstraction, analysis, synthesis, modeling, system approach, graphic approach. Results. The authors have determinedthe criteria, which will be the basis for decision making about reengineering of each separate business process and creation of their priority. These methods are importance of business process, its problematicity, opportunity and cost of carrying out changes of business process. The authors studied the standard methods which can be applied to business process reengineering effectiveness evaluation. The paper demonstrates the possibilities of using CVP method for this evaluation through determination of the carried-out reengineering influence on general performance indicators of company activity

MR diffusion tensor imaging and fiber tracking in spinal cord compression.

International audienceBACKGROUND AND PURPOSE: Spinal cord damage can result in major functional disability. Alteration of the spinal cord structural integrity can be assessed by using diffusion tensor imaging methods. Our objective is to evaluate the diagnostic accuracy of apparent diffusion coefficient (ADC), fractional anisotropy (FA), and fiber tracking in both acute and slowly progressive spinal cord compressions. METHODS: Fifteen patients with clinical symptoms of acute (n = 2) or slowly progressive (n = 13) spinal cord compression and 11 healthy volunteers were prospectively selected. We performed T2-weighted fast spin echo (FSE) and diffusion tensor imaging by using a 1.5-T MR scanner. ADC and FA maps were computed. Regions of interest were placed at the cervical, upper and lower thoracic cord levels for the healthy subjects and on the area with abnormal T2-weighted signal intensity in the patients with cord compression. In three patients, we used fiber tracking to locate the areas of cord compression precisely. Data were analyzed by using a mixed model. The sensitivity (SE) and specificity (sp) of imaging (T2, ADC, and FA maps) in the detection of spinal cord abnormality were statistically evaluated. RESULTS: For the healthy subjects, averaged ADC values ranged from 0.96 10(-3) mm(2)/s to 1.05 10(-3) mm(2)/s and averaged FA values ranged from 0.745 to 0.751. Ten patients had decreased FA (0.67 +/- 0.087), and one had increased FA values (0.831); only two patients had increased ADC values (1.03 +/- 0.177). There was a statistically significant difference in the FA values between volunteers and patients (P = .012). FA had a much higher sensitivity (SE = 73.3%) and specificity (sp = 100%) in spinal cord abnormalities detection compared with T2-weighted FSE imaging (se = 46.7%, sp = 100%) and ADC (SE = 13.4%, sp = 80%). CONCLUSIONS: FA has the highest sensitivity and specificity in the detection of acute spinal cord abnormalities. Spinal cord fiber tracking is a useful tool to focus measurements on the compressed spinal cord