考察了《历象考成》中日躔模型建构及其参数计算的过程。与《西洋新法历书》中的偏心圆结构不同,《历象考成》的日躔模型为双轮结构,按其所述是出于计算与观测相合的考虑改变了模型结构。由偏心圆结构改为双轮结构,表面看起来是一个明显的改观,但是,基于《历象考成》日躔模型而推演出的均数推算法精度相比《西洋新法历书》中的并没有明显提升。

This article examines the solar model in the Lixiang kaocheng. Unlike the eccentric solar model in Xiyang xinfa lishu, Lixiang kaocheng adopts the double epicycle model under the con-sideration that computation should be in agreement with observation. Though it is apparently a big change from the eccentric model to the double epicycle model, the accuracy of the data computed from the solar model in Lixiang kaocheng does not increase to a great extent.

GPS自主完好性监测可用性预测系统提前计算GPS卫星的RAIM可用性，可以为机场服务。该预测系统使用GPS卫星历书、NANU报、NOTAM报和机场信息对GPS卫星的RAIM可用性进行预测。该预测系统的预测结果准确，易于工程应用。

The GPS Autonomous Integrity Monitoring Availability Prediction System calculates the RAIM availability of GPS satellites ahead, and can serve in the airport. The prediction system utilizes the GPS satellites almanac, the NANU message, the NOTAM message, and airport information to predict GPS satellites RAIM availability. The prediction system has exact forecast result, and easy to engineering application.

目的探讨病历的规范书写，定时总结临床病例书写中存在的诸多问题，提出整改措施，以提高病历质量，减少漏洞，防范医疗纠纷。方法随机抽取住院病历进行检查、评估，对出现的问题提出整改措施。结果通过随机抽样调查，对临床病历书写中的医疗术语不规范、字迹潦草难辨认、错别字，医嘱执行不全及辅助检查结果缺失等问题进行及时的整改，以提高病历质量，防范医疗纠纷。结论病历书写质量管理是医院质控管理中的重要内容，规范的病历书写可减少病案管理的难度，有利于病案管理规范化、信息化和法制化，实施科学的管理和有效的控制能有效避免因病历书写不规范而引发的医疗纠纷。

Objective Discussion on standardizing the writing of medical records, timing summarizing problems in the writing of clinical cases, put forward rectification measures, to improve the quality of medical records, reduce vulnerability, the prevention of medical disputes.Methods Medical records were checked randomly, Assessment, For the existing problems put forward rectification measures.Result A random sampling survey, The medical term clinical records of non-standard, the handwriting was difficult to identify, typos, Implementation is not complete and auxiliary examination results and lack of timely rectification, In order to improve the quality of medical records, medical dispute. Conclusion Medical record writing quality management is the important content of hospital quality management, Specification of the medical record writing can improve the quality of medical record management, The medical record management standardization, the informationization and the legalization, The implem