Civil 3D参数化渠道建模在水利工程中的应用

Civil 3D软件是面向对象模型设计的建筑信息解决方案,其部件编辑器对渠道结构进行参数化模型编辑,在地形曲面中对模型进行装配,生成三维渠道模型,并根据设计要求生成不同桩号渠道横断面,按照渠道横断面材料的划分分别计算横断面面积及累计体积。通过调整渠道模型参数,三维模型、横断面及工程计算相应联动调整。Civil 3D在水利工程中的应用将大幅提高水利工程长距离渠道设计的效率及减轻设计人员的工作强度。

模袋砼在引江济汉工程渠道衬砌板修复的应用

引江济汉工程建成通水后,受调水水位升降的影响,衬砌板下砂石垫层易随时间推移被掏空,造成衬砌板塌陷破损。为保障引江济汉工程的安全运行,逐步开始应用模袋砼护坡修复施工技术。

我国粮油产品的渠道优化探究

在日常生活中,粮油产品作为人们日常生活的必需品,和人们的日常生活息息相关。随着粮油市场现代化程度的不断提高,传统模式下的粮油产品营销渠道已经无法适应当前的新情况,也无法适应新的经济形势和粮油产品营销发展的需求。一、粮油产品营销渠道现状(一)

Centrifugal and field studies on water infiltration characteristics below canals under wetting-drying-freezing-thawing cycles

Seepage is one of the main causes for the deformation and instability of canal slopes in Xinjiang,China.In this study,centrifugal model tests under wetting-drying(WD)and wetting-drying-freezing-thawing(WDFT)cycles were performed to investigate the water infiltration characteristics below a canal.The results show that the shallow soil of the canal models was fully saturated in the wetting process.Compared with the canal model under the WD cycles,the canal model under the WDFT cycles had larger saturated areas and a higher degree of saturation below the canal top after each cycle,indicating that the freezing-thawing(FT)process in the WDFT cycles promoted the water infiltration behavior below the canal slope.The cracks on the surface of the canal model under the cyclic action of WDFT developed further and had a higher connectivity,which provided the conditions for slope instability from a transverse tensile crack running through the canal top.On this basis,a field test was conducted to understand the water infiltration distribution below a typical canal in Xinjiang,China,which also verified the accuracy of the centrifugal results.This study provides a preliminary basis for the maintenance and seepage treatment of canals in Xinjiang,China.

UWB channel modeling for indoor line-of-sight environment

SV/IEEE 802.15.3a model has been the standard model for Ultra-wide bandwidth (UWB) indoor non-line-of-sight (NLOS) wireless propagation,but for line-of-sight (LOS) case,it is not well defined. In this paper,a new statistical distribution model exclusively used for LOS environment is proposed based on investigation of the experimental data. By reducing the number of the visible random arriving clusters,the model itself and the parameters estimating of the corresponding model are simplified in comparison with SV/IEEE 802.15.3a model. The simulation result indicates that the proposed model is more accurate in modeling small-scale LOS environment than SV/IEEE 802.15.3a model when considering cumulative distribution functions (CDFs) for the three key channel impulse response (CIR) statistics.

Effect improvement of drug pricing reform based on multi-channel coordination

To improve the effect of the drug pricing reform,a business model of pharmaceutical e-commerce is introduced into the pharmaceutical supply chain.First,based on the measures of the drug pricing reform,a dual-channel model is established,consisting of a drugstore and a hospital.The analysis of the model indicates that the reform leads to higher costs for patients.Then,an e-pharmacy is added to the dual-channel supply chain.Meanwhile,to reduce the home-delivery cost of the e-pharmacy,a multi-channel coordination strategy called“order online,delivery by drugstore”is proposed.By comparing the optimal values under the two models with and without coordination strategy,respectively,the results show that the profits of the e-pharmacy and the drugstore increase while the retail prices of drugs drop,and a large number of patients are diverted from the hospital.Therefore,the business model of pharmaceutical e-commerce with multi-channel coordination can greatly improve the effect of the drug pricing reform.

CDCC Approaches and Roles of Closed Channels in d-Nucleus Reactions

The effect of deuteron breakup in d-nucleus reaction is treated with the continuum discretized coupled channels （CDCC） approach, and the effects on the total reaction cross sections and elastic scattering angular distributions are studied by comparing the calculations of CDCC and spherical optical model with our global deuteron optical potential [Phys. Rev. C 73 （2006） 054605] below 200 MeV, for target nuclei ranging from ^12C to ^208Pb. The contributions from the closed channels to the total reaction and breakup cross sections, and angular distributions of elastic scattering are also seriously discussed.

O2O＇s construction based on the research of Business model with integration of online and offiine channel

With the rapid development of information technology, it appears that a single online channel or a single offline is not able to meet the consumers＇ shopping needs, the enterprises will have a better development only by making the online and offline channels be in fusion and promote each other. This paper will combine the general business modes with corporate channel integration pattern, build out different forms of the market mode including market, enterprise and customers basing on different influence level, and analyze out the enterprise how to implement the business mode of integration basing on the influence factors under the background of different business modes, then apply the corresponding O2O process to the mode, so as to broaden the enterprise selling channels for a better development.

O2O＇s construction based on the research of Business model with integration of online and offiine channel

With the rapid development of information technology, it appears that a single online channel or a single offline is not able to meet the consumers＇ shopping needs, the enterprises will have a better development only by making the online and offline channels be in fusion and promote each other. This paper will combine the general business modes with corporate channel integration pattern, build out different forms of the market mode including market, enterprise and customers basing on different influence level, and analyze out the enterprise how to implement the business mode of integration basing on the influence factors under the background of different business modes, then apply the corresponding O2O process to the mode, so as to broaden the enterprise selling channels for a better development.

Research on La Chapelle＇s ＂seamless＂ full channel sales model

The essence of the whole channel is customer satisfaction, the pursuit of customer experience, this is the ultimate goal. With the side of the mobile phone shopping boom intensified, with high-tech fusion of fashion retailers also join the flay, demonstrating its ability to satisfy the consumers at any time and place, shopping demand, thus officially announced the full channel retail era. La Chapelle is a clothing enterprise sales in Intemet plus the tide of the times, combined with the characteristics of innovation, a new sales model, namely ＂seamless＂ full channel sales model. Through the whole channel： business combination of traditional business model, the whole direct： online and offline synchronization services, new competition： the O2O model provides a three-dimensional three-dimensional services constitute the innovation. This paper mainly introduces La Chapelle＇s full channel mode analysis to get the full channel mode successfully, and implicit in the crisis enterprise development of this mode, at the same time, several companies to address the challenges of decision-making is also introduced, finally is a summary.

Analytical Models for Velocity Distributions in Compound Channels with Emerged and Submerged Vegetated Floodplains

The lateral distributions of depth-averaged velocity in open compound channels with emerged and submerged vegetated floodplains were analyzed based on the analytical solution of the depth-integrated Reynolds-Averaged Navier-Stokes equation with a term to account for the effects of vegetation.The three cases considered for open channels were two-stage rectangular channel with emerged vegetated floodplain,rectangular channel with submerged vegetated corner,and two-stage rectangular channel with submerged vegetated floodplain,respectively.To predict the depth-averaged velocity with submerged vegetated floodplains,we proposed a new method based on a two-layer approach where flow above and through the vegetation layer was described separately.Moreover,further experiments in the two-stage rectangular channel with submerged vegetated floodplain were carried out to verify the results.The analytical solutions of the cases indicated that the corresponding analytical depth-averaged velocity distributions agree well with the simulated and experimental prediction.The analytical solutions of the cases with theoretical foundation and without programming calculation were reasonable and applicable,which were more convenient than numerical simulations.The analytical solutions provided a way for future researches to solve the problems of submerged vegetation and discontinuous phenomenon of depth-averaged velocity at the stage point for compound channels.Understanding the hydraulics of flow in compound channels with vegetated floodplains is very important for supporting the management of fluvial processes.

Transmission Mechanisms of Monetary Policy in Saudi Arabia： Evidence From SVAR Analysis

In this research, the authors evaluate different channels of the monetary policy transmission mechanisms in Saudi Arabia over the last 15 years with a baseline of structural vector autoregressive （SVAR） models. Contemporaneous coefficient in the structural model indicates that while Saudi Arabia pegs its currency to US dollar, monetary policy instrument reacts positively to unexpected changes in the monetary aggregate. In addition to the traditional interest rate channel, the authors have also found the effects of credit channel. Moreover, variance decomposition results show that past shocks of credit, nominal effective exchange rate （NEER）, federal funds rate （FFR） and treasury bill （TB） are found to be important for credit growth in shorter and longer horizons. The exchange rate channel has been less significant in comparison to other channels.

An Empirical Analysis of the High-tech SMEs＇ Financing Based on Eviews5.0

This paper mainly studied the Financing Strategies of SMEs. It firstly collected literal reviews, and analyzed preliminarily the selection of the financing sample variables and data variables. Secondly, combined with Eviews5.0 software, it built a High-tech SMEs＇ financing model and deeply dug the factors affecting the financing of High-tech SMEs. Finally, combined with practical experience, this paper explored the measurements of financing taken by SMEs, and analyzed new financing channels. This paper made some contribution to the development of the High-tech SMEs＇ financing.

用友“互联网+”全渠道营销构建企业互联网生态

今年两会期间李克强总理提及"互联网+",鼓励O2O线上线下互动消费。而"互联网+"可以理解为是互联网与传统产业的融合,以实现互联阿对传统产业的改造升级。2014年TOB业务受到资本市场的关注,同时作为国内领先的软件服务商"用友软件"于2015年1月正式更名为用友网络,其更具象征意义。更名后的用友从软件生态走向互联网服务。