分级

BACE algorithm has the desired property that does not reduce the encoding efficiency of the CABAC entropy encoder compared to the CIME algorithm for CAVLC entropy encoder. Both CIME and BACE algorithms can adapt to the content security level by choose the amount and different key parts of the video stream to be encrypted, the theoretical and experimental results show that both these algorithms can effectively encrypt the video content. Due to the ability of encrypting the video content without violating the syntax, the BIME and BACE algorithms can be employed used for many advanced H.264/AVC coding options without first decrypting the video stream, like Data Partition and UnEqualized Protection for the enhancement of transmission robustness, and the scalable coding in order to match the different channel capacity.

上述两种结合了H.264/AVC熵编码器特征的内容选择性加密算法，由于其加密后的视频码流的句法结构完全符合H.264/AVC视频编码标准，与传统的基于块数据的块加密算法相比较，本文提出的两种内容加密算法可以使得加密后码流在无需解密的情况下，实现H.264/AVC视频编码标准为移动视频应用而设计的诸多特性，如：增强传输鲁棒性的数据分割技术和非均衡保护技术，以及直接做匹配信道带宽的分级编码操作等，具有更高的灵活性和计算效率，从而可以灵活运用于各种应用场合。

This article discusses the process of teacher education from unity to diversification, and analyses the questions of teacher profession in student selection, pre-job education, practical training, qualification, employ, and on-job education. It recommends 11 improvement strategies as follow: to control severely and to make better demand evaluation, to preserve partly students at government expense to spread excellent mission, to postpone the pre-job education to graduation, to make system and resource soundness in teacher education center, to make the curriculum of pre-job education flexible, to communicate college and school closely, to examine qualification actually, to unitize the teacher employ impartially, to bring the outsider into the teacher arbitration board, to classify teachers, and to found the major on-job education unit drawing up the integrated on-job education system.

摘要本文探讨我国师资培育从封闭一元到多元开放的历程，并从教师专业的角度分析师资培育多元化之後，在甄选学生，职前培育，实习，资格检定，教师聘任，以及进修等方面所遭遇的问题，对於这些问题提出下列十一项改进策略：需要严格把关，并做好需求评估；保留部分师范公费生以传承优良使命；师资培育职前课程应延至学士程度之後；「师资培育中心」制度须健全，资源须充分；职前培育课程必须具有弹性，避免固定僵化；大学与实习学校必须共同规划，密切交流；资格检定必须经过实质审查；聘任的方式必须有一致性与公平性；教评会应考虑纳入外部人士；师资培育多元化须配合教师分级制度；成立专责进修单位，规划整全系统的进修制度，提升教师进修品质。

Unoxidated and oxidized wheat stalks were extracted sequentially with CS2, benzene, methanol, acetone and THF, and the extraction solutions were analyzed with GC/MS. The relative contents and compositions of fractional extracts of un-oxidized and oxidized wheat stalks were compared.

采用二硫化碳、苯、甲醇、丙酮和四氢呋喃对未氧化和氧化的麦秆进行分级萃取，比较麦秆各级萃取物的相对含量和组成差异，并对各级萃取物的组成进行GC/MS分析。

This article discusses the classification of medical accidents , the preposition of administrative adjudication which is not included in the regulation , appraisal of medical accidents , safekeeping and unsealing of case history , and some problems concerning the compensation system of medical insurance .

文章就其在医疗事故分级、医疗纠纷诉讼仍未设置行政裁决前置、鉴定方面、病历资料的封存和启封及医疗保险赔偿机制方面存在的问题作一阐述，并提出建议性的解决办法。

On the basis of combining theory and practice as well as analyzing the necessities and urgence of strengthening the professional guide, training and introduction of community, this paper proposes that it should strengthen in stages three functions of community, join network and form superiority,develop cities' community services,make community the base of reserving,training and providing talents, so as to advance re employment engineering.

理论与实际结合，分析论证强化社区职业指导、职业培训和职业介绍的必要性与迫切性，提出分级健全社区&三大功能&，联成网络，形成优势，进一步发展城市社区服务，使社区成为蓄备人才、培训人才、输送人才的基地，推进再就业工程的建议

In spite of rapid progress achieved recently on research of regional environmental quality assessment, problems of weightedness and classification have never been solved so far.

近年来区域环境质量评价虽进展迅速，但加权与分级仍为其中最无把握、且最易引起争议的问题，迄今仍未妥善解决。

The velocity and temperature numerical simulation at three dimentions in four-corner-burners boiler is conducted. The velocity and temperature distribution of weste gas in the old and transformed boiler are compared which is helpful to optimize the parameters of the burners for design and operation.

在新型回流区分级着火燃烧器的应用实践中，对四角切圆锅炉炉内三维速度场和温度场进行了数值模拟，比较了改造前后炉内烟速和烟温分布，有助于优选燃烧器的设计运行参数。

Based on the principles of stepped firing in recirculation zones, several new type straightjet and revolving-pour burners are designed and manufactured which used for different power boilers and industral furnaces with combustion of pulverized coal, poor-gas or fuel-oil. The burners are tested and improved in practice and good results are finally achieced in variant degrees including strenthening flame stability, adapting to boiler capacities and rank of coal, raising combustion and heat transfer efficiency, and lowering the temperature of weste gas at the boiler tail.

应用回流区分级着火原理，设计和制造了几种不同结构型式的直流、旋流新型燃烧器，用于燃煤粉、煤气、油雾的不同类型的锅炉和工业炉，在实践中进行试验和改进，最终都在不同程度上取得了强化稳定燃烧、适应负荷和燃料品质变化、提高燃烧和传热效率、降低炉尾烟温的好效果。

According to the property of mud of gas of plum steel blast furnace, undertook to its zincic experiment studies receiving iron to fall, no matter use magnetic separation,the result makes clear or classification the law all can reclaim from which content of major iron ore and purify is major zinc, stock of will tall zinc, low zinc undertakes effective depart, iron concentrate yield and grade all achieve 52% above, iron metal reclaims rate 70%, take off zinc to lead 50% above.

梗概： 介绍了梅钢高炉瓦斯泥的性质、试验情况及结果，国内外处理使用含锌高炉瓦斯泥的方法。根据梅钢高炉瓦斯泥的性质，对其进行了收铁降锌的试验探究，结果表明无论用磁选还是分级法均能从中回收大部分铁矿物并去除大部分锌，将高锌、低锌物料进行有效分离，铁精矿产率和品位均达到52%以上，铁金属回收率70%，脱锌率50%以上。

27 cases of cervical cord injuries received MEP examination elicited with a Mag2 magnetic stimulator,15 of them were followed-up 3～6 months.MEP were recorded bilaterally at abductor pollicis brevis and anterior tibialis muscles.SEP examination was performed with a Keypoint electromyograph.

采用Mag2型磁刺激仪对27例颈髓损伤患者进行经颅磁刺激MEP检查，在双侧外展拇短肌和胫前肌进行记录，采用Keypoint肌电图诱发电位仪进行体感诱发电位检查，收集患者的临床资料按照ASIA 92运动评分和损伤标准分级。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。