广西县域经济发展问题研究

广西县域经济发展存在整体实力较弱、增长速度偏慢、产业层次较低、产业特色不强及区域发展失衡等突出问题。针对全区73个县域行政区划的三个梯队,提出加快广西县域经济发展的差异化对策建议,包括强化创新引领,打造跨越发展新动力;坚持协调发展,构筑均衡发展新架构;加快绿色转型,形成绿色生产方式;强化开放带动,拓展县域经济发展空间;深化县域治理改革,激发县域经济发展活力。     

甲子河拦河坝坝型选型设计

为了合理选择甲子河治理工程中拦河坝坝型,从功能要求、耐久性、运行管理与维护和景观等方面对3种设计方案进行了比选分析,最终选择底轴驱动翻板闸为拦河坝坝型,对有效推进甲子河的科学治理提供了有力的支撑和保障。     

行业属性、拉克尔法则与员工薪酬适度性研究--来自2008-2012年中国资本市场的经验证据

员工薪酬适度性是收入分配制度改革的关键。文章借鉴“拉克尔法则”，以行业属性为视角，选取沪深A股同类行业属性上市公司2008-2012年度财务报告数据，计算“拉克尔阀值”，判别员工薪酬适度性。研究发现，针对销售收入异常波动与垄断性的上市公司，“拉克尔法则”无法判别员工薪酬适度性，但竞争性行业上市公司则能判别员工薪酬适度性；同时，“拉克尔法则”能解释行业属性相同而地域不同的上市公司员工薪酬差异。     

逆周期因子决定了人民币汇率走势吗*

2017年5月26日，中国外汇交易中心人民币兑美元中间价报价机制中引入逆周期因子。本文利用引入新因子以来外汇市场交易数据，通过新的人民币汇率中间价定价机制，测算了逆周期因子数值。在此基础上，本文通过构建VAR模型和EGARCH模型研究了逆周期因子对人民币汇率走势和人民币汇率波动性的影响。研究表明，引入逆周期因子降低了人民币汇率波动性，但对人民币汇率的走势没有显著影响。逆周期因子修正了投资者对汇率变动顺周期性的过度反应，有利于引导市场预期，完善人民币汇率宏观审慎管理。     

Economic evaluation of human urinary kallindinogenase for patients with acute ischemic stroke in China

Objectives: In China, both human urinary kallindinogenase (HUK) and 3-n-butylphthalide (NBP) are recommended for clinical use to improve cerebral blood circulation during an acute ischemic stroke (AIS). The objective was to evaluate the economic value of HUK vs NBP for patients with AIS from a Chinese payer’s perspective.

Methods: An economic evaluation based on data of patients who have been treated with either HUK (n?=?488) or NBP (n?=?885) from a prospective, phase IV, multi-center, clinical registry study (Chinese Acute Ischemic Stroke Treatment Outcome Registry, CASTOR) was conducted to analyze the cost and effectiveness of HUK vs NBP for AIS in China. Before the analysis, the patients were matched using propensity score. Both a cost-minimization analysis and a cost-effectiveness analysis were conducted to compare the matched pairs. A bootstrapping exercise was conducted for the matched arms to demonstrate the probability of one intervention being cost-effective over another for a given willingness-to-pay for an extra quality-adjusted life-year (QALY).

Results: After propensity score matching, 463 pairs were matched. The overall medical cost in the HUK arm is USD 2,701.20, while the NBP arm is USD 3,436.83, indicating HUK is preferred with cost-minimization analysis. Although the QALY gained in the HUK arm (0.77176) compared with the NBP arm (0.76831) is statistically insignificant (p?=?.4862), the cost-effectiveness analysis as exploratory analysis found that, compared with NBP, HUK is a cost-saving strategy with the lower costs of USD 735.63 and greater QALYs gained of 0.00345. Among the 5,000 bootstrapping replications, 100% indicates that HUK is cost-effective compared with NBP under a 1-time-GDP threshold; and 97.12% indicates the same under a 3-time-GDP threshold.

Conclusion: This economic evaluation study indicates that administrating HUK is a cost-saving therapy compared with NBP for managing blood flow during AIS in the Chinese setting.     

较差质量数据下的返回弹道计算及对落点影响的分析

针对某老式卫星返回时雷达跟踪数据曾发生的测量异常及质量较差等情况，为解决此类数据在返回弹道及落点计算中出现的实际困难以及给出应对措施，基于工程实际情况给出了三种不同建模类型下的弹道计算方法——当前统计解耦扩展卡尔曼滤波（EKF）、动力学建模无迹卡尔曼滤波（UKF）、多项式滑窗最小二乘估计算法，并应用该次质量较差的实际观测数据进行了算法应用效果分析与落点计算情况对比，对计算中的经验及教训进行了总结。研究结果表明，所给出的三种算法在面对较差质量数据时性能差异较大，在工程实际应用中可考虑将多种算法互为参考。研究结果及其经验教训对卫星返回弹道及落点的实时估计的工程实施有一定的参考价值。     

水利工程建设中的遗产保护

从水工遗产保护的角度,详细介绍了旱涝灾后应急治理工程高邮境内里运河东堤沿线引水涵闸车逻闸除险加固过程中的建设方案、保护方案、施工工序、施工工艺等保护措施,以及水工遗产保护带来的效应,以期真正达到传承、保护、利用的目的 .     

A genetic algorithm based approach to transactional and QoS-aware service selection

As there are various risks of failure when Web services are deployed in unreliable environment, the execution of a composite Web service (CWS) requires the transaction mechanism to guarantee its reliable execution. However, the existing service selection approaches consider QoS and transaction separately and have not considered that transactional properties may affect the QoS such as the execution time of a CWS. This work addresses the importance of considering transactional properties and how the transactional properties affect the QoS simultaneously in the process of service selection by a QoS-aware and transactional-aware selection approach. First, a performance evaluation method is proposed to calculate the execution time of a transactional CWS. Then, a genetic algorithm based approach, which takes into account the execution time, price, transactional property and successful execution rate of CWS, is presented to achieve global optimisation service selection. Finally, experimental results show the efficiency and effectiveness of the approach.     

职业技术教育"校企合作"遇到的瓶颈剖析

文章在明确校企合作内涵的基础上，指出当前职业技术教育“校企合作”遇到的瓶颈，并给出合理化建议。