A feasible method was proposed to improve the vibration intensity of screen surface via application of a new type elastic screen surface with multi degree of freedom(NTESSMDF). In the NTESSMDF, the primary robs were c...A feasible method was proposed to improve the vibration intensity of screen surface via application of a new type elastic screen surface with multi degree of freedom(NTESSMDF). In the NTESSMDF, the primary robs were coupled to the main screen structure with ends embedded into the elastomers, and the secondary robs were attached to adjacent two primary robs with elastic bands. The dynamic model of vibrating screen with NTESSMDF was established based on Lagrange's equation and the equivalent stiffnesses of the elastomer and elastic band were calculated. According to numerical simulation using the 4th order Runge-Kutta method, the vibration intensity of screen surface can be enhanced substantially with an averaged acceleration amplitude increasing ratio of 72.36%. The primary robs and secondary robs vibrate inversely in steady state, which would result in the friability of materials and avoid stoppage. The experimental results validate the dynamic characteristics with acceleration amplitude rising by62.93% on average, which demonstrates the feasibility of NTESSMDF.展开更多
By effectively controlling and maintaining the safety of civil chemical industry pressure vessels, the pressure production cost can be effectively controlled, the stable safety of industrial chemical pressure producti...By effectively controlling and maintaining the safety of civil chemical industry pressure vessels, the pressure production cost can be effectively controlled, the stable safety of industrial chemical pressure production can be ensured, and the maximum possibility and the maximum and minimum possibility of various major safety accidents can be reduced. Therefore, the safety production management personnel of the petrochemical equipment enterprises in our country need to continuously strengthen and improve the operation safety management and inspection of the spare equipment of each spare pressure vessel, and carry out long-term comprehensive inspection, maintenance and operation management of the spare equipment of each spare pressure vessel in combination with many common safety management problems that spare parts are easy to damage, so as to ensure that each spare pressure vessel can work safely, stably and reliably for a long time and reduce the maximum possibility and occurrence of various major safety accidents.展开更多
Objective: to analyze the reasons that affect patients compliance in the treatment of diabetic patients, and to explore measures to improve the quality of care. Methods: the analysis results are valid in comparison. T...Objective: to analyze the reasons that affect patients compliance in the treatment of diabetic patients, and to explore measures to improve the quality of care. Methods: the analysis results are valid in comparison. The number of patients participating in this study is 86. The 86 patients were admitted between January 2018 and December 2020. The patients were divided into a control group of 44 according to their medication status (poor compliance), 42 in the observation group (high compliance). The patients knowledge of diabetes and their psychology were compared to explore the reasons that affect the patients compliance. Results: after comparative analysis and sorting, it was found that there are many reasons that affect patients compliance, including age, degree of diabetes knowledge and other factors. From a statistical point of view, P<0.05 has practical comparative value. Conclusion: in the nursing of diabetic patients, the reasons for poor patient compliance are related to a variety of factors. Therefore, for diabetic patients, further health education and psychological care should be given to patients, which can enhance patient compliance and help patients. Relieve negative psychological emotions and generally help patients with treatment.展开更多
Objective: to analyze the prevention and treatment effect of chronic disease management by community general practitioners on diabetes. Methods: patients with diabetes treated in recent years were randomly divided int...Objective: to analyze the prevention and treatment effect of chronic disease management by community general practitioners on diabetes. Methods: patients with diabetes treated in recent years were randomly divided into two groups for scientific research. The differences in basic conditions between the two groups were compared, including the cognition of diabetes disease, compliance behavior score, normal blood glucose rate, fasting and postprandial blood glucose levels after intervention. Results: the cognitive and compliance scores of diabetic disease in the study group were higher than those in the control group, the normal blood glucose rate was higher than that in the control group, and the fasting and postprandial blood glucose levels after intervention were lower than those in the control group, P < 0.05. Conclusion: the management of chronic disease in patients with diabetes by community general practitioners can achieve good results, improve the cognitive level of patients, and effectively control blood glucose, which is worthy of promotion.展开更多
Software defect prevention is an important way to reduce the defect introduction rate.As the primary cause of software defects,human error can be the key to understanding and preventing software defects.This paper pro...Software defect prevention is an important way to reduce the defect introduction rate.As the primary cause of software defects,human error can be the key to understanding and preventing software defects.This paper proposes a defect prevention approach based on human error mechanisms：DPe HE.The approach includes both knowledge and regulation training in human error prevention.Knowledge training provides programmers with explicit knowledge on why programmers commit errors,what kinds of errors tend to be committed under different circumstances,and how these errors can be prevented.Regulation training further helps programmers to promote the awareness and ability to prevent human errors through practice.The practice is facilitated by a problem solving checklist and a root cause identification checklist.This paper provides a systematic framework that integrates knowledge across disciplines,e.g.,cognitive science,software psychology and software engineering to defend against human errors in software development.Furthermore,we applied this approach in an international company at CMM Level 5 and a software development institution at CMM Level 1 in the Chinese Aviation Industry.The application cases show that the approach is feasible and effective in promoting developers＇ ability to prevent software defects,independent of process maturity levels.展开更多
Long piles of the ocean oil platform are usually manufactured as the integration of several segments, which have to be assembled one by one during installation. During pile driving, excessive pore pressure will build ...Long piles of the ocean oil platform are usually manufactured as the integration of several segments, which have to be assembled one by one during installation. During pile driving, excessive pore pressure will build up in such a high level that hydraulic fracturing in the soil round the pile may take place, which will cause the soil to consolidate much faster during pile extension period. Consequently, after pile extension, the soil strength will recover to some extent and the driving resistance will increase considerably, which makes restarting driving the pile very difficult and even causes refusal. A finite element （FE） analysis procedure is presented for judging the risk of refusal by estimating the blow counts after pile extension, in which the regain of soil strength is considered. A case analysis in Bohai Gulf is performed using the proposed orocedure to exolain the nile refusal phenomenon.展开更多
基金Project(51221462)supported by the National Natural Science Foundation of China for Innovative Research GroupProject(20120095110001)supported by the Doctoral Fund of Ministry of Education of China+1 种基金Project supported by the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions,ChinaProject(CXJJ201303)supported by the Innovation Foundation of Xuyi Research and Development Center of Mining Equipment and Materials,China University of Mining and Technology,China
文摘A feasible method was proposed to improve the vibration intensity of screen surface via application of a new type elastic screen surface with multi degree of freedom(NTESSMDF). In the NTESSMDF, the primary robs were coupled to the main screen structure with ends embedded into the elastomers, and the secondary robs were attached to adjacent two primary robs with elastic bands. The dynamic model of vibrating screen with NTESSMDF was established based on Lagrange's equation and the equivalent stiffnesses of the elastomer and elastic band were calculated. According to numerical simulation using the 4th order Runge-Kutta method, the vibration intensity of screen surface can be enhanced substantially with an averaged acceleration amplitude increasing ratio of 72.36%. The primary robs and secondary robs vibrate inversely in steady state, which would result in the friability of materials and avoid stoppage. The experimental results validate the dynamic characteristics with acceleration amplitude rising by62.93% on average, which demonstrates the feasibility of NTESSMDF.
文摘By effectively controlling and maintaining the safety of civil chemical industry pressure vessels, the pressure production cost can be effectively controlled, the stable safety of industrial chemical pressure production can be ensured, and the maximum possibility and the maximum and minimum possibility of various major safety accidents can be reduced. Therefore, the safety production management personnel of the petrochemical equipment enterprises in our country need to continuously strengthen and improve the operation safety management and inspection of the spare equipment of each spare pressure vessel, and carry out long-term comprehensive inspection, maintenance and operation management of the spare equipment of each spare pressure vessel in combination with many common safety management problems that spare parts are easy to damage, so as to ensure that each spare pressure vessel can work safely, stably and reliably for a long time and reduce the maximum possibility and occurrence of various major safety accidents.
文摘Objective: to analyze the reasons that affect patients compliance in the treatment of diabetic patients, and to explore measures to improve the quality of care. Methods: the analysis results are valid in comparison. The number of patients participating in this study is 86. The 86 patients were admitted between January 2018 and December 2020. The patients were divided into a control group of 44 according to their medication status (poor compliance), 42 in the observation group (high compliance). The patients knowledge of diabetes and their psychology were compared to explore the reasons that affect the patients compliance. Results: after comparative analysis and sorting, it was found that there are many reasons that affect patients compliance, including age, degree of diabetes knowledge and other factors. From a statistical point of view, P<0.05 has practical comparative value. Conclusion: in the nursing of diabetic patients, the reasons for poor patient compliance are related to a variety of factors. Therefore, for diabetic patients, further health education and psychological care should be given to patients, which can enhance patient compliance and help patients. Relieve negative psychological emotions and generally help patients with treatment.
文摘Objective: to analyze the prevention and treatment effect of chronic disease management by community general practitioners on diabetes. Methods: patients with diabetes treated in recent years were randomly divided into two groups for scientific research. The differences in basic conditions between the two groups were compared, including the cognition of diabetes disease, compliance behavior score, normal blood glucose rate, fasting and postprandial blood glucose levels after intervention. Results: the cognitive and compliance scores of diabetic disease in the study group were higher than those in the control group, the normal blood glucose rate was higher than that in the control group, and the fasting and postprandial blood glucose levels after intervention were lower than those in the control group, P < 0.05. Conclusion: the management of chronic disease in patients with diabetes by community general practitioners can achieve good results, improve the cognitive level of patients, and effectively control blood glucose, which is worthy of promotion.
文摘Software defect prevention is an important way to reduce the defect introduction rate.As the primary cause of software defects,human error can be the key to understanding and preventing software defects.This paper proposes a defect prevention approach based on human error mechanisms：DPe HE.The approach includes both knowledge and regulation training in human error prevention.Knowledge training provides programmers with explicit knowledge on why programmers commit errors,what kinds of errors tend to be committed under different circumstances,and how these errors can be prevented.Regulation training further helps programmers to promote the awareness and ability to prevent human errors through practice.The practice is facilitated by a problem solving checklist and a root cause identification checklist.This paper provides a systematic framework that integrates knowledge across disciplines,e.g.,cognitive science,software psychology and software engineering to defend against human errors in software development.Furthermore,we applied this approach in an international company at CMM Level 5 and a software development institution at CMM Level 1 in the Chinese Aviation Industry.The application cases show that the approach is feasible and effective in promoting developers＇ ability to prevent software defects,independent of process maturity levels.
基金supported by the National Natural Science Foundation of China(51322904 and 51279127)the Program for New Century Excellent Talents in University(HCET-11-0370)
文摘Long piles of the ocean oil platform are usually manufactured as the integration of several segments, which have to be assembled one by one during installation. During pile driving, excessive pore pressure will build up in such a high level that hydraulic fracturing in the soil round the pile may take place, which will cause the soil to consolidate much faster during pile extension period. Consequently, after pile extension, the soil strength will recover to some extent and the driving resistance will increase considerably, which makes restarting driving the pile very difficult and even causes refusal. A finite element （FE） analysis procedure is presented for judging the risk of refusal by estimating the blow counts after pile extension, in which the regain of soil strength is considered. A case analysis in Bohai Gulf is performed using the proposed orocedure to exolain the nile refusal phenomenon.
