Project Bidding Research Articles

Study of Bidding Decision-Making in Construction Project Based on LM-BP Neural Networks

There is a tendency that arbitrary and tendentiousness are brought by experts’ subjectivity during the bidding evaluation. A method for construction project bidding based on the BP neural network improved by LM is proposed. To overcome the disadvantage of slow convergence and being prone to converge to minimum, LM was used to be combined with the BP neural networks. It has been proved by an application an effective complement for the deficiency of BP neural network on the bidding decision of construction project. Through the application in reality, we found that the LM-BP neural network in resolving the problems during the bidding process is meaningful.

Study on Construction Bidding Management Based on GA-BP Neural Networks

In the bidding evaluation, the deviations are likely to be brought about by experts' subjectivity, arbitrary and tendentiousness. A method for construction project bidding based on the BP neural network improved by GA (Genetic Algorithm) is proposed. On the basis of the basic theory of the BP neural network, discussions are provided on how to rectify the drawbacks of slow convergence and prone to convergence to minimum with the use of GA. The model is successfully applied GA - BP artificial neural networks to project, which are in concert with the result of experts. The study makes contribution to research about the evaluation system of construction bidding management.

Study on the cultivation of clinical postgraduates＆#39; innovation ability in higher medical colleges and universities

To foster interdisciplinary talents with the highly fusion of clinical skills and the capacity for scientific research, a preliminary exploration of teaching for the cultivation of scientific innovation ability was carried out for clinical postgraduate students. In the cultivation of clinical post-graduate students＇ innovation consciousness and innovative spirit, we focused on the transformation of attaching more importance to the clinical skills than to the capacity for scientific research to establish the foundation of the competitive compound talents. Then in the early stage of medical project writing, basic knowledge learning and exchange, we stressed clinical postgraduate students＇ solid grasp of basic knowledge of medical science to consolidate the way of enhancing the scientific research ability. Furthermore , under the guidance of the second research supervisors allocated by the department , we strengthened the clinical postgraduate students＇ writing of scientific research project bid and professional paper to promote the organic combination of the clinical practice and scientific research innovation and enhance their scientific research ability. Key words: Clinical postgraduate students; Scientific innovation; Cultivation of ability

Price Adjustment Policies in Procurement Contracting: An Analysis of Bidding Behavior

The fluctuations in fuel prices over the past decade led a number of government agencies to introduce price adjustment clauses in procurement contracting. Those clauses were primarily designed to reduce contractors’ uncertainty without considering the impact of such initiatives on bidding and the budget. We analyze a newly constructed, detailed panel of observations on bids for construction contracts and compare bidding behavior across periods and projects, and across items within projects. Estimates from a difference-in-differences approach, indicate that bidding becomes more aggressive and less dispersed after the implementation of this policy. The difference is more pronounced when we consider itemized bids than overall project bids. Alternative techniques of regression discontinuity and nonparametric estimation are applied and yield consistent results.

The analysis of project bidding of Natural Science Foundation of China by Chinese Center for Disease Control and Prevention in 2003-2012

The situation of project bidding of Natural Science Foundation of China (NSFC) by Chinese Center for Disease Control and Prevention (China CDC) during the year 2003 and 2012 was analyzed.The main indicators including:the types and amounts of the winning project,the funds,subject areas and the age structure of project directors.Results show an upward trend in winning project number and the funds in this decade; and the winning number of youth found was significantly increased between 2011 and 2012.The major subject areas of the winning project still remains in viruses,bacteria and other basic research; the maternal and child health,and chronic disease areas realize zero breakthroughs.The age structure of project directors tends to be reasonable,and the young and middle-age researchers have become the main force of the scientific research in China CDC.In conclusion,to effectively strengthen the management of the NSFC would help the center acquire more funds support and subsidies. Key words: Natural Science Foundation; scientific research management; project bidding

Validation Control of Construction Cost

Project investment is the most important factor in construction. Project-establishment, design, project bidding and construction phases are the basic stages in construction. According to different phases, scientific investment estimation method, cost engineers participating in design, realistic tender sum limit and strictly overall controlling are the validation methods. Eventually, realize the goal of controlling construction cost.

Export Financing in International Construction: Case Study of Siemens Power Division in Oman

Many construction and technological firms grew beyond borders of their countries since their market size couldn’t absorb their growing production capacities. Similarly, orientation to certain market segments forced these firms to go abroad in order to sustain their revenues, further improve their specialization and expand shareholder value. Due to increasing competition in the world market, traditional prerequisites do not necessarily have to lead to success in international bids. In addition to technological excellence, long-lasting experience, quality and cost leadership, securing project financing can play a crucial role in project bids. International Joint Venture (IJV), led by Siemens, gained an order with an international bid for delivery of two power plants with combined cycle to Oman, due to securing project financing for multinational investor. Project financing, arranged by German state-owned KfW IPEX-Bank, proved to be the turning point in this international tender. Siemens and its Korean partner successfully delivered both power plants in full conformance to investor's requirements. Despite uneasy market conditions and financial markets recovering from financial crises, German and Korean government export credit agencies (ECAs) opened new export opportunity, in order to support their home economies. Whereas jobs in Germany were secured, Siemens as a leading contractor improved its market position within the region of Middle East. At the same time, Sultanate of Oman gained access to highly efficient power sources with low impact on environment. This reference study demonstrates increasing and necessary role of government export-oriented agencies and banks for reaching exporters’ success in international business. The main objective of this paper is to contribute to identification of exporter's key success factors, when delivering project on export financing principles. In order to clearly introduce key aspects of this advanced export financing concept, case study as a research methodology was selected.

The Engineering Pricing and Project Bidding Management

Our current engineering pricing mode and management method still is not standard, the coexistence about all kinds of the engineering pricing method, especially the large problem of pricing method of private project. Our existing engineering pricing also has many unreasonable places in the program, which makes our engineering pricing has become one of the most important channels of Human intervention and corruption. These problems also make a serious distortion of our engineering cost, the "three over" (budget estimates more than estimates, the budget more than estimate, the account more than budget ) is a serious problem. Through a comparative study we can be seen that the bidding is the basic method of the engineering pricing, bidding method is only an auxiliary. But during the use of bidding for engineering pricing, only have the principles and legal in general which is not enough, also need to develop the bidding corresponding management methods and strict management of Engineering bidding. In fact, the project bidding management is one of the important contents during project cost management system.

Greenhouse gas emissions of alternative pavement designs: Framework development and illustrative application

Pavement rehabilitation is carbon intensive and the choice of pavement type is a critical factor in controlling greenhouse gas (GHG) emissions. The existing body of knowledge is not able to support decision-making on pavement choice due to a lack of consensus on the system boundaries, the functional units and the estimation periods. Excessive data requirements further inhibit the generalization of the existing methodologies for design evaluation at the early planning stage. This study proposes a practical life-cycle GHG estimation approach, which is arguably effective to benchmark pavement emissions given project bid tabulation. A set of case studies conducted for this study suggest that recycled asphalt pavement (e.g., foam stabilized base (FSB), and warm mix asphalt (WMA)) would prevent up to 50% of GHGs from the initial construction phase. However, from a life-cycle perspective, pavement emissions are dictated largely by the traffic characteristics and the analysis period for the use phase. The benefits from using recycled materials (e.g., FSB) are likely to diminish if the recycled products do not perform as well as those properly proportioned with less recycled materials, or if the recycled materials are locally unavailable. When the AADT reaches 10,000, use phase releases more than 97% of the life cycle emissions and the emissions difference among alternative designs will be within 1%.

The Study on the Evaluation Model of DEA Cross-Efficiency and Fuzzy Comprehensive Assessment in Decision Making for Bidding of Construction Projects

This paper tries to use Data Envelopment Analysis (DEA) as the foundation, combining Fuzzy Comprehensive Assessment (FCA) method and Analytic Hierarchy Process (AHP), to make decisions for the project. First we use FCA method to analyze and quantize each index, then use AHP method to determine the weight of each index, use Evaluation Model of DEA Cross-efficiency to reduce the error of expert evaluation and weight in the FCA method. This paper will give the detailed steps. Finally, we use a case to test the reliability and feasibility of our method. We think, this paper will provide a now method for the Construction project bidders.

A Data Pre-Processing Method for Software Effort Estimation Using Case-Based Reaso


 
 
 
 
 Software effort estimates is an important part of software development work and provides essential input to project feasibility analyses, bidding, budgeting and planning. Analogy-based estimates models emerge as a promising approach, with comparable accuracy to arithmetic methods, and it is potentially easier to understand and apply. Studies show all the models are sensitive to the quality and availability data, thus requiring a systematic data treatment. In this paper, it is proposed a data pre-processing method for use in software effort estimate. The results of it on applying on applying Case Based Reasoning - CBR that enables us to enhance the
 
 
 
 
 
 
 precision of the estimates.
 
 
 
 

RISK ANALYSIS FOR SHIP CONVERTING PROJECT ACCOMPLISHMENT (Case study of KRI KP Converting Project)

Ship converting has become as prospective activity in ship building area. Operational and economical aspect are the most dominant rationale. Baseon a new fuction of converted ship, a task list which contain several jobs that must be done is listed. This accomplishment schedule not only contain a task list, but also duration for certain job title. In practical apllication job duration is maintained based on experience of project manager. Further more, total accomplish duration is setted as time accomplishment for the project. This setted time has become reference for the project bid. Occasionaly, if accomplishment time which offered is strict, than schedule slip become as potencial nightmare. For this situation, project manager has had a cristal clearconsideration to select a proper decision wheter he will take the tender offer or not. practically, project mananger has layed on his experience to handle previous project and face penalty if the project delayed. This paper focussed on how to measure tender offer based on risk analysis, specially for converted ship tender which has a strike time accomplishment.A new application method to analysis proposed tender based on time and penalty parameter has become a topic of this paper.

Construction Project Bid Evaluation of Group Decision-Making Model Based on Triangular Fuzzy Number

A new comprehensive evaluation based on triangular fuzzy number method is put forward in this paper, according to the principle of fuzzy comprehensive evaluation and using trichotomy to determine membership function. And a calculation example is illustrated by using the method presented. The method is a reference to the bid evaluation in the future.

Game Analysis on Collusion Tender in the Construction Projects Bidding

Causes and main forms of collusion tender in the bidding of construction projects were analyzed. In accordance mainly with the characteristics of the collusion tender, one-off game and repeated game analysis models were established respectively on the two common forms of complementary bid and bid rotation between bidders. They were analyzed with the relevant principles of the game theory. Based on the results of analysis, strategy and measures to collusion tender were proposed from the perspective of the bid inviting party.

Study on the Problems and Countermeasures of Rural Drinking Water Safety Engineering Construction and Management in China

The construction of China's rural drinking water safety project to have achieved stage results was summarized, and has analyzed the problems of the direction of investment and money management to be not clear, the project legal person subject to be unknown, project bidding to be not real, construction quality to be not high, poor operation and management in China rural safe drinking water project construction and management. The countermeasures have been put forward to solve the problems.

Research on Evaluation Method for Construction Bidding Projects

There are great subjectivity and tendentiousness during bid evaluation of engineering construction projects, which may cause deviation to bid evaluation results of bidding work. BP neural network model for bid evaluation of construction projects is built in the thesis, and the model can solve non-linear issues in the bid evaluation construction engineering projects well. And at the same time, evaluation results of the model are verified with the use of actual index data of sample enterprises, which can confirm effectiveness of such model.

The Project Bid Evaluation Based on Triangular Fuzzy Number and its Application

According to the fuzzification and uncertainty which exist in the evaluation of project,triangular fuzzy number analysis model was put forward.The model make good use of its characteristics on dealing with the uncertainty in evaluation,quantitative the quanlitative index,and give an example of a project to introduce its use.

Bidding strategy to support decision-making by integrating fuzzy AHP and regression-based simulation

Abstract This study proposes a new bidding strategy to support decision-making that is based on a combined framework of the Fuzzy Analytical Hierarchy Process (FAHP) and regression-based simulation. First, the FAHP method integrates the AHP with fuzzy set theory to determine the weights of factors that influence the cost of a project. Second, the integration of the cumulative distribution functions that are generated by the Monte Carlo simulation with a regression model yields bid amounts that correspond to various confidence levels. The proposed approach is used to analyze data on bridge construction projects that are taken from a database of the Taiwan Public Construction Commission. The systematic bid assessment model and the cost-probability curve can be used as strategic tools for quantifying project risks and calculating bids for construction projects.

Analysis of Evaluating Bid Price of Reasonable Lowest Price in Construction Project Bidding

the biggest characteristics of Bidding are openness, fairness and preferred. The essence of the tender and bid is making advanced productive foreces develop much better and backward productivity eliminated through the market competition mechanism so as to effectively promote economic development and social progress. In this paper, we discussed and analysed the pricing method of reasonable lowest price evaluation of the bid assessment in construction project bidding, providing effective reference for reasonable lowest price evaluation method in construction project bidding.

Development and Construction Techniques of Foreign PC Continuous Beam

In construction of medium span, small span and commonly long span bridges, the prestressed concrete continuous beams are playing an important role and the vistas of development of the bridges is vast. The design , construction and new material application remain to be further improved, through great achievements has been made in China in the construction of the PC continuous beam bridges, the global techniques of the bridges in the country in the recent several decades. Through the study of prestressed concrete continuous beam bridge construction technology development trend and research, understand the international bridge of advanced design concepts and construction technology of foreign engineering project bidding, formulates the reasonable construction plan, strengthen the domestic enterprises to expand overseas bridge construction market competitive force, and provide useful reference.