PROBABILISTIC METHODOLOGY OF LOW CYCLE FATIGUE ANALYSIS

The cyclic stress-strain responses (CSSR), Neuber's rule (NR) and cyclic strain-life relation (CSLR) are treated as probabilistic curves in local stress and strain method of low cycle fatigue analysis. The randomness of loading and the theory of fatigue damage accumulation (TOFDA) are considered. The probabilistic analysis of local stress, local strain and fatigue life are constructed based on the first-order Taylor's series expansions. Through this method proposed fatigue reliability analysis can be accomplished.

A method for computing unsupported roof distance in roadway advancement and its in-situ application

A reasonable unsupported roof distance(URD) when advancing underground coal mine roadways can contribute greatly to safe and rapid roadway development.A mechanical model of the roof,using the relationship between the roof stress distribution and URD,obtained by the difference method,and roof stability according to the in-situ roof stress and rock mass strength was developed.We subsequently designed a proper range of URD,developed a testing method of URD with the function of mining protection,evaluated roof stability through analyzing the test data and then determined a reasonable URD.Considering the factors of the geological conditions,the immediate roof stability and the efficiency of the labor arrangement system,the URD of the advancing roadway of 9802 working face in Zhangshuanglou coal mine was determined to be 6 m using the proposed method.The results show that,when a 2 m length of roadway was reinforced by temporary support and high pre-stressed bolt support after the roadway advancement of 6 m per cycle,the speed and the security of the roadway development can be achieved and the advance rate can reach more than 400 m per month.

Effect of PDCA on Nursing Management

Objective:To explore and analyze the effect of the plan-do-check-act(PDCA)cycle method in the nursing management of head nurses.Methods:68 patients who were hospitalized in the general surgery department were used as research subjects.The patients were divided into an experimental group and a reference group,with 34 cases in each group,by drawing lots.The experimental group was managed with the PDCA method.The management satisfaction,nursing quality score,and nursing effect of both groups were compared with each other.Results:The patients in the experimental group were generally more satisfied with the nursing services compared to the reference group(P<0.05),and the difference was statistically significant.Before the intervention,there was no statistically significant difference(P>0.05)in the nursing quality scores such as ward safety management,nursing risk management,nursing document writing,rescue equipment management,and head nurse administrative management between the two groups.After the intervention,the experimental group had higher nursing quality scores.Furthermore,the nursing effects such as disease education,quality control,safety management,humanistic care,and service attitude in the experimental group were significantly better than those in the reference group(P<0.05).Conclusion:The application of the PDCA method in nursing management can improve management satisfaction,nursing quality,and nursing effect.

Research on the Quality Management of Apprenticeship Education at“Famous Senior TCM Physician Studio”

"Inherited the traditional education"is the main mode of talent cultivation of traditional Chinese medicine and effective way,in order to better promote the heritage and development of TCM cause,1et"famous old Chinese medicine studio"play in training talents,academic communication,scientific research,service people should have a role to promote the region's traditional Chinese medicine clinical ability,our college of traditional Chinese medicine(TCM)based on a studio conducted to old with the new educational background education,the author use the PDCA circulation method in management of"famous old Chinese medicine studio"education"shicheng"quality management is improved and exploring,significantly improved the team of teachers and students both sides of teaching and learning satisfaction,At the same time,it has effectively promoted the overall level of TCM medical treatment in our hospital.

Modified Shifting Bottleneck Heuristic for Scheduling Problems of Large-Scale Job Shops

A modified shifting bottleneck algorithm was proposed to solve scheduling problems of a large-scale job shop.Firstly,a new structured algorithm was employed for sub-problems so as to reduce the computational burden and suit for large-scale instances more effectively.The modified cycle avoidance method,incorporating with the disjunctive graph model and topological sort algorithm,was applied to guaranteeing the feasibility of solutions with considering delayed precedence constraints.Finally,simulation experiments were carried out to verify the feasibility and effectiveness of the modified method.The results demonstrate that the proposed algorithm can solve the large-scale job shop scheduling problems(JSSPs) within a reasonable period of time and obtaining satisfactory solutions simultaneously.