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Copyright of Nonferrous Metals Engineering is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve the problems of vague and inconsistent requirement descriptions and understanding during the development of electronic control systems, and taking into account the experience of actual research and development projects and the CMMI3 level certification process, a requirement development method based on a visual analysis model was proposed. Firstly, the complex automotive electronic control system was hierarchically divided, and the customer's top-level functional requirements of the vehicle were analyzed. The use case scenario modeling was used to define the system and the external environment boundary and interaction relationship to capture the top-level system requirements. Then, based on the visual analysis method of activity diagram and sequence diagram, the static and dynamic behaviors of the system were analyzed in detail, and the ideas and methods of requirement mining at different levels were given. The requirement diagram was used to show the details of requirement development and the traceability relationship of different levels of requirement. Finally, taking trigger diesel particulate filter DPF regeneration as a case study, the application process of the requirement method of visual analysis model was systematically expounded, and the feasibility and effectiveness of the proposed method were verified. Results provide technical means and guidance for the forward development of automobile electronic control system. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Frontiers of Computer Science & Technology is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Smart Agriculture is the property of Smart Agriculture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To explore the clinical curative effect of trimetazidine or Shengmai decoction combined with astragalus injection in the treatment of acute viral myocarditis(AVMC). Methods: A total of 140 patients with AVMC, who were treated in Sichuan Provincial People’s Hospital from April 2013 to April 2016, were selected and randomly divided into control group(n=45), Qu Huang group(n=46) and Sheng Huang group(n=49). The control group received routine drug treatment.On the basis of the control group’s therapy, the Qu Huang group received trimetazidine combined with astragalus injection and the Sheng Huang group received Shengmai decoction combined with astragalus injection. The serum creatine kinase-MB(CK-MB), cardiac troponin I(cTnI), electrocardiogram indexs, clinical total effective rate, improvement of clinical symptoms and adverse reaction were compared among the three groups.Results: After treatment, the total effective rate in the Qu Huang group and Sheng Huang group was significantly higher than that in the control group,and the total effective rate in the Qu Huang group was higher than that in the Sheng Huang group(P<0.05). The incidence of heart palpitations and chest pain in the Qu Huang group and the Sheng Huang group were lower than that in the control group,the differences were statistically significant(P<0.05). The levels of serum CK-MB and cTnI in the Qu Huang group and the Sheng Huang group were lower than those in the control group, and the levels of above indexes in the Qu Huang group was lower than that in the Sheng Huang group(P<0.05). The incidence of atrioventricular heart-block, ST-T change,premature ventricular contractions in the Qu Huang group were lower than those in the control group(P<0.05).There was no significant difference in the incidence of adverse reactions among the three groups(P>0.05). Conclusion: In the treatment of patients with AVCM. The total effective rate of trimetazidine combined with astragalus injection is higher than that of Shengmai decoction combined with astragalus injection. It can reduce the degree of myocardial injury and improve clinical symptoms,without serious adverse reactions, which is worthy of clinical application. [ABSTRACT FROM AUTHOR]