粮食现代物流输送系统的负荷计算

本文以锦州港粮食现代物流项目为例,介绍了粮食物流系统输送设备、通风保粮设备、清扫及检修设备、建筑电气、消防类设备等用电设备的运行特点,以及负荷计算方法。     

清洁发展机制下核证减排量的定价分析

本文考察了中国清洁发展机制一级市场上核证减排量(pCER)的定价机制,运用VECM 模型分析了碳排放配额(EUA)与二级市场上核证减排量(sCER)的关系,运用NW OLS多元回归模型分析了影响sCER价格的因素.研究结果表明,pCER的价格由发达国家的投资者主导,买卖双方的风险与收益不匹配;二级市场上sCER的价格与...     

Welfare versus market access: The implications of tariff structure for tariff reform

We show that the effects of tariff changes on welfare and import volume are fully characterised by their effects on the generalised mean and variance of the tariff distribution, implying two “cones of liberalisation” in commodity price space. Because welfare is negatively but import volume positively related to the generalised variance, the cones do not intersect, which poses a policy dilemma. We present a new radial tariff reform rule, which implies new results for welfare- and market-access-improving tariff changes. Finally, we show that generalised and trade-weighted moments are mutually proportional when the trade expenditure function is CES.     

黄河浪店水源工程站址地基砂土液化评价

黄河浪店水源工程浪店站址位于黄河河床及河漫滩上，站址地基上部为厚层全新统河湖相沉积砂土层，其液化问题是影响到站址稳定最主要的工程地质问题之一，文中就该站址地基液化问题进行了工程地质论证和评价。     

谈农村低压系统供电方式

低压供电系统采用负荷中心供电方式，可以大幅度降低电能损耗和减少负荷末端的电压降，应予以大力推广应用。     

不同替代负载对器具温升测试准确性影响的试验研究

电气安全试验中,不同替代负载对带输出功能器具的温升测试准确性的影响问题引起了检验行业的广泛关注。本文对扬声器的阻抗特性进行分析和实测,使用真实负载和多种替代负载进行了三组比较试验,对试验数据进行比较和分析,试验结果表明使用替代负载相比真实负载时的温升变化趋势一致,同时为替代负载在实验室快速检测中应用提供了理论支持。     

Medical cost reductions associated with the usage of novel oral anticoagulants vs warfarin among atrial fibrillation patients,based on the RE-LY,ROCKET-AF,and ARISTOTLE trials

Abstract

Objective:

The randomized clinical trials, RE-LY, ROCKET-AF, and ARISTOTLE, demonstrate that the novel oral anticoagulants (NOACs) are effective options for stroke prevention among non-valvular atrial fibrillation (AF) patients. This study aimed to evaluate the medical cost reductions associated with the use of individual NOACs instead of warfarin from the US payer perspective.

Methods:

Rates for efficacy and safety clinical events for warfarin were estimated as the weighted averages from the RE-LY, ROCKET-AF and ARISTOTLE trials, and event rates for NOACs were determined by applying trial hazard ratios or relative risk ratios to such weighted averages. Incremental medical costs to a US health payer of an AF patient experiencing a clinical event during 1 year following the event were obtained from published literature and inflation adjusted to 2010 cost levels. Medical costs, excluding drug costs, were evaluated and compared for each NOAC vs warfarin. Sensitivity analyses were conducted to determine the influence of variations in clinical event rates and incremental costs on the medical cost reduction.

Results:

In a patient year, the medical cost reduction associated with NOAC usage instead of warfarin was estimated to be ?$179, ?$89, and ?$485 for dabigatran, rivaroxaban, and apixaban, respectively. When clinical event rates and costs were allowed to vary simultaneously, through a Monte Carlo simulation, the 95% confidence interval of annual medical costs differences ranged between ?$424 and +$71 for dabigatran, ?$301 and +$135 for rivaroxaban, and ?$741 and ?$252 for apixaban, with a negative number indicating a cost reduction. Of the 10,000 Monte-Carlo iterations 92.6%, 79.8%, and 100.0% were associated with a medical cost reduction >$0 for dabigatran, rivaroxaban, and apixaban, respectively.

Conclusions:

Usage of the NOACs, dabigatran, rivaroxaban, and apixaban may be associated with lower medical (excluding drug costs) costs relative to warfarin, with apixaban having the most substantial medical cost reduction.     

基于负载均衡的图书馆随书光盘管理研究

随着存储技术的不断发展,越来越多的纸质文献开始配备光盘来弥补其互动性、视听性、检索性等方面的缺陷,而图书馆在收录纸质文献过程中也必然会同时收录光盘,并对光盘进行管理。目前将光盘内容上网成为图书馆对光盘的主要管理方式,但随着师生下载的增多,如何解决网络瓶颈成为当务之急,本文提出使用负载均衡技术来解决这一难题。     

Calculating load factors for the transatlantic airline market using supply and demand data – A note on the identification of gaps in the available airline statistics

This paper takes a critical view of the verification of load factors for the direct transatlantic airline market by combining supply and demand-data. The supply-related data originate from the Official Airline Guide, a well-known data source that contains information on scheduled flights. The demand-related data originate from the Marketing Information Data Transfer database, a data set containing information on actual airline bookings. Combining both data sets enables us to calculate the seat occupancy of direct flights between North-West Europe and the US for 2001. Based on the results, we assess the utility of the joint use of these data sources for aviation economic research, and identify various gaps in the available airline statistics.     

从“双增双节”看发电企业的成本领先战略

文章介绍发电企业面临的市场环境及中国大唐集团公司开展＂双增双节,盈利攻坚＂活动的积极意义,分析发电企业的产业趋势,阐述发电企业以经济效益为中心,实施成本领先战略的重要性及实施要点。