期刊文献+
共找到13,267篇文章
< 1 2 250 >
每页显示 20 50 100
Construction of the“Micro-Ideological and Political”Model for Ideological and Political Teaching Reform in Bidding and Contract Management Courses
1
作者 Dongchun Xia 《Journal of Contemporary Educational Research》 2024年第11期326-332,共7页
In the context of deepening educational reforms,the significance of ideological and political education has become increasingly prominent,emerging as a crucial aspect of enhancing students’comprehensive qualities.To ... In the context of deepening educational reforms,the significance of ideological and political education has become increasingly prominent,emerging as a crucial aspect of enhancing students’comprehensive qualities.To ensure the orderly progress of ideological and political education in courses,it is essential to actively promote the integration of ideological and political elements within coursework.This integration aims to align professional course education with ideological and political education,fostering a collaborative educational model.Therefore,in the teaching of bidding and contract management courses,constructing a“micro-ideological and political”teaching model has emerged as a critical component.The implementation of this model facilitates the seamless integration of bidding and contract management coursework with ideological and political education,thereby elevating the teaching quality of these courses.Additionally,it leverages the synergistic role of coursework and ideology in educating students,ultimately enhancing the quality and level of talent cultivation.Hence,this paper proposes strategies for constructing a“microideological and political”model within the context of ideological and political teaching reforms in bidding and contract management courses,inviting discussion and exchange on this topic. 展开更多
关键词 bidding and contract management courses Ideological and political elements “Micro-ideological and political”model
下载PDF
Model for Bidding and Tendering with Bill of Quantities Based on Bid-Winning Estimate at Reasonable Low Price 被引量:2
2
作者 宋吉荣 钟胜 郭耀煌 《Journal of Southwest Jiaotong University(English Edition)》 2006年第4期387-393,共7页
The possibility and rationality of introducing an bid-winning estimate based on a reasonable low price into construction bidding mode with bill of quantities were analyzed by setting up a model for bidding and tenderi... The possibility and rationality of introducing an bid-winning estimate based on a reasonable low price into construction bidding mode with bill of quantities were analyzed by setting up a model for bidding and tendering, and the functions of the estimate of reasonable low price in the bidding were revealed. On this basis, a new bidding mode of the project with bill of quantities was pro- posed. The application of the new mode will be advantageous to the promotion of the bill of quantities in China. 展开更多
关键词 Bill of quantifies Reasonable low price Model for bidding and tendering
下载PDF
Endoplasmic reticulum stress improved chicken tenderness,promoted apoptosis and autophagy during postmortem ageing
3
作者 Yuwei Chai Lin Chen +4 位作者 Shuya Xiang Linxuan Wu Xuebo Liu Jun Luo Xianchao Feng 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第4期2141-2151,共11页
In this study,endoplasmic reticulum(ER)stress inducer tunicamycin(TM)and inhibitor 4-phenylbutyric acid(4-PBA)were used to treat postmortem chicken breast muscle to investigate changes in tenderness and effects on apo... In this study,endoplasmic reticulum(ER)stress inducer tunicamycin(TM)and inhibitor 4-phenylbutyric acid(4-PBA)were used to treat postmortem chicken breast muscle to investigate changes in tenderness and effects on apoptosis and autophagy during 5 days ageing.TM-induced ER stress reduced shear force,enhanced myofibril fragmentation index(MFI),disrupted myofibril structure,increased desmin degradation,and activatedμ-calpain and caspase-12.In addition,TM-induced ER stress increased the expression of Bax,Bim,and cytochrome c,and decreased the expression of Bcl-x L.Furthermore,TM-induced ER stress improved the conversion of LC3I to LC3II,raised the expression of Beclin-1,and decreased the expression of p62,PI3K,and m TOR.The opposite results were observed after 4-PBA treatment.These results suggested that ER stress could improve chicken tenderness,promote apoptosis and autophagy during chicken postmortem ageing. 展开更多
关键词 Endoplasmic reticulum stress tenderNESS APOPTOSIS AUTOPHAGY CHICKEN
下载PDF
Computer Aided Call for Tenders: A Tool for Software Bidding
4
作者 Jorge Hochstetter Carlos Cares 《Journal of Software Engineering and Applications》 2014年第7期592-601,共10页
Under a broad comprehension of Software Engineering, it is preferred the term software life cycle instead of just software production. The reason is that cycle starts at software conception and stops when the software... Under a broad comprehension of Software Engineering, it is preferred the term software life cycle instead of just software production. The reason is that cycle starts at software conception and stops when the software is relegated. Given contemporary companies’ market strategies of focusing on their competitive advantages, most of them have externalized their software production to outsourced services. Therefore, the call for software tenders has become a common step in the software life cycle. In this paper, we present a tool which aids non-experts to specify call for software tenders. The motivation was Chile situation of most of rural and semi-urban city halls which do not have engineering teams to build call for software tenders. We describe the problem in terms of lack of competitiveness and empty biddings generated by low quality calls for tenders. As a second step, we show the technical considerations to develop the proposed tool and its features. We include an initial tool perception from a first group of users. 展开更多
关键词 CALL for tenders SOFTWARE bidding Requirements SPECIFICATIONS SOFTWARE OUTSOURCING
下载PDF
Analyses of Chicken Tenderness Traits Based on Transcriptome Sequencing
5
作者 Zengrong ZHANG Mohan QIU +6 位作者 Chunlin YU Xia XIONG Xiaoyan SONG Bo XIA Shiliang ZHU Jialei CHEN Chaowu YANG 《Agricultural Biotechnology》 2024年第2期17-19,共3页
The calpain system is ubiquitous in cells, mainly comprising calpains and calpain inhibitors, and is a widespread calcium-dependent cysteine protease in organisms that is involved in many cellular processes such as mu... The calpain system is ubiquitous in cells, mainly comprising calpains and calpain inhibitors, and is a widespread calcium-dependent cysteine protease in organisms that is involved in many cellular processes such as muscle degradation in vivo and affects the tenderness of meat after animal slaughter. The study found 128 DEGs that probably regulated tenderness traits were selected from 16 significantly enriched GO terms by transcriptome sequencing analysis, and found that the developmental changes in the expression levels of the CAPN1 gene in the pectoral and leg muscles were significantly positively correlated ( P <0.05) with the cumulative growth values of live weight and comb weight. The developmental changes in the expression levels of the CAST gene in the pectoral and leg muscles were not significantly correlated with the cumulative growth values of live weight and comb weight. Our results helped demonstrate the potential molecular mechanisms of tenderness in chickens and provide valuable information for chicken breeding. 展开更多
关键词 CHICKEN tenderness traits Transcriptome sequencing
下载PDF
A Multi-Agent Based Equipment Bidding System on the Web 被引量:1
6
作者 Hu Lichen, Liu Li, Dong Yu & Ding Yuzhan(University of Science and Technology, Beijing 100083, P. R. China China North Vehicle Institute, Beijing 100072, P. R. China) 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2002年第4期46-55,共10页
This paper puts forward a new framework of multi-agent based equipment bidding system on the Web (MAEBSW). The purpose of the paper is to make the process of enterprise equipment bidding, especially the decision proce... This paper puts forward a new framework of multi-agent based equipment bidding system on the Web (MAEBSW). The purpose of the paper is to make the process of enterprise equipment bidding, especially the decision process of enterprise equipment bidding, more intelligent. The system discussed in this paper is an efficient method for the enterprises doing business electronically. We also present our opinion of the approaches to defining agents. We emphasize the importance of agent being able to provide explanation about its behavior for the user or other agents. Based on this opinion we design a new common architecture of most agents in MAEBSW. 展开更多
关键词 AGENT Decision support system Equipment bidding Explanation capability.
下载PDF
Penalty model for delay of bidding section construction period in South-to-North Water Diversion Eastern Route Project from perspective of programs 被引量:2
7
作者 Jing-chun FENG Ya-fang REN +2 位作者 Zhong-nan DUAN Zhan-jun LIU Hai-yang LI 《Water Science and Engineering》 EI CAS 2012年第3期350-360,共11页
According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculatio... According to the multi-project and program management theory, this paper analyzes the program generation principle and establishes a program based on progress goals. On the basis of the present situation of calculation of penalty for delay of the bidding section construction period with the critical path method, we studied the effects of contractor-induced delay of the bidding section construction period in detail, including the effects on the construction period of the bidding section itself, the earliest start times of the next bidding section and other subsequent bidding sections, and the construction period of the program, and then constructed a penalty model for delay of the bidding section construction period from the perspective of programs. Using the penalty model, we conducted a practical analysis of penalty for delay of the construction period of the Baoying station program in the South-to-North Water Diversion Project. The model can help determine the amount of penalty for delay of the construction period in bidding sections scientifically and reasonably, 展开更多
关键词 program establishment program management bidding section construction period critical path method (CPM) penaly model South-to-North Water Diversion Project
下载PDF
The Research about the Trans-provincial Centralized Bidding Trading Market of East China Power Grid --I:Empirical Analysis 被引量:1
8
作者 Bin Zou Xiao-Jun Wang +1 位作者 Xiao-Gang Li Li-Bing Yang 《Engineering(科研)》 2013年第1期115-120,共6页
The clearing price and bidding price in electricity market are two key indicators to measure whether it is reasonable or not. Based on the grey incidence analysis, this paper studies the correlation coefficient betwee... The clearing price and bidding price in electricity market are two key indicators to measure whether it is reasonable or not. Based on the grey incidence analysis, this paper studies the correlation coefficient between the clearing price and bidding price with the generation cost, the supervision and rules of the market, the supply and demand situation, the behavior of market members over the same period, which is based on the actual data of the trans-provincial centralized trading market of East China Power Grid. The results show that the factors affecting the clearing price and bidding price from largest to smallest are generation cost, supervision and rules of the market, the supply and demand situation, the behavior of market members. The conclusion is that the trans-provincial trading platform of East China Power Grid is a reasonable regional market which can discover the market cost, and regulate the market supply and demand balance, and promote healthy competition. 展开更多
关键词 East China Power Grid Trans-provincial CENTRALIZED bidding TRADING CLEARING PRICE bidding PRICE GREY Incidence Analysis
下载PDF
Effects of Hydrogen Storage System and Renewable Energy Sources for Optimal Bidding Strategy in Electricity Market 被引量:1
9
作者 Can Li Xiaode Zuo 《Energy Engineering》 EI 2022年第5期1879-1903,共25页
This work suggested a novel model for obtaining optimum bidding/offering strategy to improve the benefits in case of big users.Aiming this regard,several electrical energy resources including:micro turbines,green powe... This work suggested a novel model for obtaining optimum bidding/offering strategy to improve the benefits in case of big users.Aiming this regard,several electrical energy resources including:micro turbines,green power sources(wind turbine and photovoltaic system),power storage unit such as Hydrogen storage system with fuel cell,as well as mutual treaties are taken into account in offered model.Considering various models for uncertain parameters based on their natures such as power demand,electricity market tariffs,solar irradiation,temperature and wind speed is one of the contributions of the proposed model.Uncertainty of power demand is modeled by robust optimal method whereas remain uncertain parameters are incorporated in model by stochastic method.Considering of wind speed cased is made by Weibull distribution.While,normal distribution is utilized for production of cases for electricity market tariffs,solar irradiation and temperature.In order to reduce the bidding error loss,the storage devices are corporate with green energy in power unbalanced conditions.Combined-integer linear programming method is applied for handling of pricing method profiles that have strength against considered uncertainties on power demand of big user.The obtained results confirm,the entire electrical energy supplement expenditure of big user in absence of demand uncertainty is$39.63 whereas it is augmented up to$49.47 to achieve robustness vs.demand uncertainty.Also,using of hydrogen storage system by considering the reliability index is reduced the bidding price of the system. 展开更多
关键词 bidding uncertain constrains bilateral contracts renewable energy RELIABILITY
下载PDF
A method for power suppliers’optimal cooperative bidding strategies considering network losses 被引量:1
10
作者 Guanghui Sun Xiaowei Wang +3 位作者 Libo Yang Bin Ma Lei He Rongquan Zhang 《Global Energy Interconnection》 2020年第4期335-345,共11页
The bidding strategies of power suppliers to maximize their interests is of great importance.The proposed bilevel optimization model with coalitions of power suppliers takes restraint factors into consideration,such a... The bidding strategies of power suppliers to maximize their interests is of great importance.The proposed bilevel optimization model with coalitions of power suppliers takes restraint factors into consideration,such as operating cost reduction,potential cooperation,other competitors’bidding behavior,and network constraints.The upper model describes the coalition relationship between suppliers,and the lower model represents the independent system operator’s optimization without network loss(WNL)or considering network loss(CNL).Then,a novel algorithm,the evolutionary game theory algorithm(EGA)based on a hybrid particle swarm optimization and improved firefly algorithm(HPSOIFA),is proposed to solve the bi-level optimization model.The bidding behavior of the power suppliers in equilibrium with a dynamic power market is encoded as one species,with the EGA automatically predicting a plausible adaptation process for the others.Individual behavior changes are employed by the HPSOIFA to enhance the ability of global exploration and local exploitation.A novel improved firefly algorithm(IFA)is combined with a chaotic sequence theory to escape from the local optimum.In addition,the Shapley value is applied to the profit distribution of power suppliers’cooperation.The simulation,adopting the standard IEEE-30 bus system,demonstrates the effectiveness of the proposed method for solving the bi-level optimization problem. 展开更多
关键词 bidding strategy COOPERATION Network loss Improved firefly algorithm Hybrid optimization
下载PDF
A Grey Decision Model Used in Bidding for Equipment Purchase 被引量:1
11
作者 BAO Yu-kun, ZHANG Jin-long, WANG LinManagement School, Huazhong University of Science & Technology, Wuhan 430074, P. R. China 《International Journal of Plant Engineering and Management》 2002年第2期93-98,共6页
Bidding has long been used as a method for allocating and procuring goods and services. An acurrate and comprehensive evaluation of bidders is the key to make the bidding a successful one for tenderee. However, evalua... Bidding has long been used as a method for allocating and procuring goods and services. An acurrate and comprehensive evaluation of bidders is the key to make the bidding a successful one for tenderee. However, evaluation of bidders is a tough work and the result of evaluation is always affected by the evaluator's understanding of the standards set for evaluation, and the evaluator's expertise, experience and preferrence. We make an effort to find a method for selecting bidders as accurately as possible. A grey decision model is presented, and an example is illustrated to make the practioners know how to use the model. 展开更多
关键词 evaluation model grey theory bidding equipment purchase
下载PDF
A Generation Pricing Method with Capacity Bidding
12
作者 LIXiao-gang YANMao-song 《Journal of Shanghai University(English Edition)》 CAS 2001年第4期345-352,共8页
Due to historic reasons China encounters some special difficulties in ESI (electricity system industry) restructuring. An easy and simple electricity value equivalent (es EVE) method for day ahead pool purchase pric... Due to historic reasons China encounters some special difficulties in ESI (electricity system industry) restructuring. An easy and simple electricity value equivalent (es EVE) method for day ahead pool purchase pricing of China is therefore presented in this paper. The es EVE method is different from two part and one part tariffs. It is more like the UK's method in form, but revised for China with some new concepts and procedure. The main contributions of it include: (1) Find two kinds of eigenvalue, namely EVEs, in an optimization model, (2) Define new concepts of virtual units and feasible region, (3) Twice merit orderings are employed successively to find marginal price. They are simple maximum and minimum comparison procedures and so on. The special economic significance of the method for China is discussed, and some suggestion for ESI restructuring based on es EVE method are provided. A case study is offered at the end of the paper. 展开更多
关键词 electricity market DEREGULATION pool purchase price bidding and auction marginal pricing
下载PDF
Bidding Scheme Design of Central Recreational Area for Xiaogan Linkong Economic Zone
13
作者 WANG Ai'guo SUN Ti 《Journal of Landscape Research》 2016年第5期48-52,共5页
This paper elaborated the bidding scheme design of the Central Recreational Area in Linkong Economic Zone from the perspectives of site analysis, determination of properties, design theme and principle, scheme layout ... This paper elaborated the bidding scheme design of the Central Recreational Area in Linkong Economic Zone from the perspectives of site analysis, determination of properties, design theme and principle, scheme layout and conception, in order to explore the potential enlightenments of the scheme design process, and disclose significance of site analysis and its close relationship with the scheme design. 展开更多
关键词 Linkong Economic Zone Central Recreational Area bidding scheme Water show Phoenix dancing
下载PDF
Research and Application of FAHP in Bidding Quotation for Petroleum Geophysical Prospecting Project
14
作者 Jing Wang Jianhe Guan Donglin Liu 《Open Journal of Statistics》 2017年第4期589-598,共10页
This paper mainly talks about the main layer analytical method, and fuzzy comprehensive evaluation, fuzzy hierarchical analysis (AHP) method of a deeper connotation, and further discusses its application in bidding qu... This paper mainly talks about the main layer analytical method, and fuzzy comprehensive evaluation, fuzzy hierarchical analysis (AHP) method of a deeper connotation, and further discusses its application in bidding quotation for petroleum geophysical prospecting project. Fuzzy analytic hierarchy process (FAHP) integrates many merits of AHP and fuzzy comprehensive evaluation organically. It determines the weight of each affecting factor using analytic hierarchy process at first, and then uses the fuzzy comprehensive evaluation method to determine each scheme index. FAHP can effectively enhance the decision-making efficiency. 展开更多
关键词 FUZZY Comprehensive Evaluation FUZZY Matrix PETROLEUM GEOPHYSICS bid Price
下载PDF
Bidding Strategy in Deregulated Power Market Using Differential Evolution Algorithm
15
作者 Veera Venkata Sudhakar Angatha Karri Chandram Askani Jaya Laxmi 《Journal of Power and Energy Engineering》 2015年第11期37-46,共10页
The primary objective of this research article is to introduce Differential Evolution (DE) algorithm for solving bidding strategy in deregulated power market. Suppliers (GENCOs) and consumers (DISCOs) participate in t... The primary objective of this research article is to introduce Differential Evolution (DE) algorithm for solving bidding strategy in deregulated power market. Suppliers (GENCOs) and consumers (DISCOs) participate in the bidding process in order to maximize the profit of suppliers and benefits of the consumers. Each supplier bids strategically by choosing the bidding coefficients to counter the competitors bidding strategy. Electricity or electric power is traded through bidding in the power exchange. GENCOs sell energy to power exchange and in turn ancillary services to Independent System Operator (ISO). In this paper, Differential Evolution algorithm is proposed for solving bidding strategy problem in operation of power system under deregulated environment. An IEEE 30 bus system with six generators and two large consumers is employed to demonstrate the proposed technique. The results show the adaptability of the proposed method compared with Particle Swarm Optimization (PSO), Genetic Algorithm (GA) and Monte Carlo simulation in terms of Market Clearing Price (MCP). 展开更多
关键词 bidding STRATEGY DIFFERENTIAL Evolution Power MARKET MARKET CLEARING PRICE
下载PDF
Wind Power Bidding Strategy Based on the Minimax Regret Criterion with Limited Distribution Information
16
作者 Yashan Mao Jianfang Tian Qiaozhu Zhai 《Journal of Power and Energy Engineering》 2014年第4期169-175,共7页
In optimal wind bidding strategy related literatures, it is usually assumed that the full distribution information (for example, the cumulative distribution function or the probability density function) of wind power ... In optimal wind bidding strategy related literatures, it is usually assumed that the full distribution information (for example, the cumulative distribution function or the probability density function) of wind power output is known. In real world applications, however, only very limited distribution information can be obtained. Therefore, the “optimal bidding strategy” obtained based on the hypothetical distribution may be far away from the true optimal one. In this paper, an optimal bidding strategy is obtained based on the minimax regret criterion. The salient feature of the new approach is that it requires only partial information of wind power distribution, for example, the expectation and the support set. Numerical test is then performed and the results suggest that the method established in this paper is effective. 展开更多
关键词 bidding Strategy Expected PROFIT Partial Distribution Information MINIMAX REGRET CRITERION IMBALANCE Cost
下载PDF
Synthetic Evaluation on Decision of Public Bidding for Construction Project
17
作者 孙涛 颜秋许 《Journal of China University of Mining and Technology》 2002年第1期48-51,56,共5页
Public bidding is the international current practice to contract construction project. But the decision on the bidding often is made according to the qualitative evaluation based on the subjective opinion of specialis... Public bidding is the international current practice to contract construction project. But the decision on the bidding often is made according to the qualitative evaluation based on the subjective opinion of specialists. Therefore, the fuzzy mathematics principle was applied and a synthetic evaluation model was established to provide an effective method for the development of quantitative bidding decision in this paper. 展开更多
关键词 construction project public bidding DECISION evaluation method
下载PDF
tender(bid)用法小议
18
作者 丁玉玲 《语言教育》 1996年第7期48-49,共2页
tender(bid)可用作名词或动词,表示“投标”或“招标”,是国际贸易中常见的一种贸易形式。它常用在国家政府机构、国营企业或公用事业单位采购物资、器材或设备的交易中.更多地用于国际承包工程。在美国通常用 bid,而在英国则多用 tende... tender(bid)可用作名词或动词,表示“投标”或“招标”,是国际贸易中常见的一种贸易形式。它常用在国家政府机构、国营企业或公用事业单位采购物资、器材或设备的交易中.更多地用于国际承包工程。在美国通常用 bid,而在英国则多用 tender。现将 tender(bid)的一些常用方法分述如下: 展开更多
关键词 tender bid 国际承包工程 公用事业单位 贸易形式 政府机构 采购物资 投标人 投标价格 中标人
下载PDF
Cooperative Petroleum Contracts of the First Bidding Round are Perfectly Implemented in Tarim Basin
19
《China Oil & Gas》 CAS 1995年第3期56-57,共2页
CooperativePetroleumContractsoftheFirstBiddingRoundarePerfectlyImplementedinTarimBasin¥//Thecooperativcblock... CooperativePetroleumContractsoftheFirstBiddingRoundarePerfectlyImplementedinTarimBasin¥//Thecooperativcblocksforthefirstbiddi... 展开更多
关键词 BASIN TARIM the CONTRACTS bidding
下载PDF
Innovative Thought of Tendering Management Mechanism of Universities and Colleges in China under New Circumstances ——Taking North China Electric Power University as an Example
20
作者 Ze Zhou 《Journal of Educational Theory and Management》 2018年第2期60-64,共5页
Since the reform and opening up, the Chinese government has attached growing importance to education, and has invested more resources and funds into higher education. In addition, the government has also invested larg... Since the reform and opening up, the Chinese government has attached growing importance to education, and has invested more resources and funds into higher education. In addition, the government has also invested large amounts of funds and technologies in the infrastructure construction of universities and colleges. The undertakings related to the infrastructure construction of universities and colleges in China are complicated in essence. Therefore, funds and technologies of the highest standards should be introduced. At the same time, external tendering is necessary for some undertakings. Currently, the tendering model adopted by universities and colleges in China is the traditional, which is ridden with some problems to be resolved in the shortest possible period. This paper focuses on the current problems of the tendering model adopted by universities and colleges and their solutions. Taking the tendering model in the undertakings of North China Electric Power University as an example, it notes setbacks of the traditional tendering model, and provides kind of theoretical support for establishing a new tendering model for universities and colleges and the related enterprises in China. 展开更多
关键词 NEW Circumstances Universities and COLLEGES tendering Management INNOVATIVE THOUGHT
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部