一种基于二次变换运动预测的有损分割图轮廓编码

1　 Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ｔｈｅｉｎｔｅｒｅｓｔｉｎｖｅｒｙｌｏｗｂｉｔ ｒａｔｅｖｉｄｅｏｃｏｄｉｎｇｈａｓｉｎ ｃｒｅａｓｅｄｃｏｎｓｉｄｅｒａｂｌｙｗｉｔｈｔｈｅｃｒｅａｔｉｏｎｏｆｎｅｗｓｅｒｖｉｃｅｓａｎｄａｐｐｌｉｃａｔｉｏｎｓｒｅｑｕｉｒｉｎｇｔｈｉｓｃｌａｓｓｏｆｂｉｔｒａｔｅｓｉｎｔｈｅｉｒｆｕｎｃｔｉｏｎ .Ｗｉｔｈｔｈｉｓｔｒｅｎｄ ,ｏｂｊｅｃｔ ｏｒｉｅｎｔｅｄｖｉｄｅｏｃｏｄｉｎｇｗａｓｆｉｒｓｔｐｒｏｐｏｓｅｄｂｙＭｕｓｍａｎｎｅｔａｌ.ｉｎ 1989[1 ],ａｎｄｈａｓｂｅｅ…     

机器人被动柔顺手腕及其优化设计

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PV型高效旋风分离器在催化裂化反应沉降器中的应用

该文介绍了我国自行研制开发的PV型高效旋风分离器的优越性和特点。根据茂名石化公司一催化装置反应沉降器的特定情况,优化设计了其内部的PV型高效旋风分离器,投用效果良好。     

Human Trafficking: Preparing Counselors to Work with Survivors

The global crisis of human trafficking involves the exploitation of people for personal gain and affects millions. Survivors often present with symptoms that are not identifiable to untrained clinicians. In this article, we discuss the importance for counselor training, as well as counselor self-efficacy and competency in addressing the needs of human trafficking survivors.     

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高校的创业教育对增强大学生的创业意识、健全大学生的创业心理、提升大学生的创业能力具有十分重要的作用,而我国高校当前的创业教育存在诸多问题。为提高创业教育的实效性,必须完善创业教育课程体系,加大政府与企业的参与及支持度,优化创业生态系统。     

语文课堂教学的“实＂与“美＂

教学是一门科学,也是一门艺术;课堂教学的有效性,直接关系到课堂教学的质量。面对目前语文课堂教学实践着存在的费时低效的状况,提高语文课堂教学的有效性迫在眉睫。应当从“实”与“美”两个方面出发,提升语文课堂教学效果。即通过导课之“实”、提问之“实”、环节之“实”、作业之“实”,以及语文课堂的“美声”培养、“美言”品味、“美境”营造,实现语文教学与新课标理念的契合。     

眼动分析法在教育技术领域的应用与趋势

眼动分析法兴起于心理学领域,其客观记录受众视线和认知分析的能力迅速得到众多学科推崇,与视觉信息加工相关的心理机制研究已取得显著成果。教育技术学领域迫切需要利用眼动分析法从受众的视角出发,遵循人的视觉认知规律去探索人机交互过程中如何优化信息的获取和加工过程。目前教育技术领域中引入眼动分析法开展的研究数量较少且尚不全面。随着技术的发展和研究的深入,相信眼动分析法能够使得教育技术学科的研究更加严谨、科学。     

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城镇化是我国未来20年经济发展的新引擎,也是我国扩大内需的最大潜力所在。中国的城镇化进程中需要大量资金投入,仅仅依靠政府的投资远远不能解决问题,反而会带来诸多问题。充分发挥私幕股权基金的作用有助于解决城镇化进程中的融资问题,既可以为社会进步和经济发展做出贡献,又可以获取预期的经济效益,实现私募股权基金行业的更大更快发展。     

Is right ventricular mid-septal pacing superior to apical pacing in patients with high degree atrio-ventricular block and moderately depressed left ventricular function?

Objective

We are aimed to investigate whether right ventricular mid-septal pacing (RVMSP) is superior to conventional right ventricular apical pacing (RVAP) in improving clinical functional capacity and left ventricular ejection fraction (LVEF) for patients with high-degree atrio-ventricular block and moderately depressed left ventricle (LV) function.

Methods

Ninety-two patients with high-degree atrio-ventricular block and moderately reduced LVEF (ranging from 35% to 50%) were randomly allocated to RVMSP (n=45) and RVAP (n=47). New York Heart Association (NYHA) functional class, echocardiographic LVEF, and distance during a 6-min walk test (6MWT) were determined at 18 months after pacemaker implantation. Serum levels of N-terminal pro-brain natriuretic peptide (NT-proBNP) were measured using an enzyme-linked immunosorbent assay (ELISA) kit.

Results

Compared with baseline, NYHA functional class remained unchanged at 18 months, distance during 6MWT (485 m vs. 517 m) and LVEF (36.7% vs. 41.8%) were increased, but BNP levels were reduced (2352 pg/ml vs. 710 pg/ml) in the RVMSP group compared with those in the RVAP group, especially in patients with LVEF 35%–40% (for all comparisons, P<0.05). However, clinical function capacity and LV function measurements were not significantly changed in patients with RVAP, despite the pacing measurements being similar in both groups, such as R-wave amplitude and capture threshold.

Conclusions

RVMSP provides a better clinical utility, compared with RVAP, in patients with high-degree atrioventricular block and moderately depressed LV function whose LVEF levels ranged from 35% to 40%.