Use of Value Management Theory to Control the Cost of Railway Transportation Project

2012 ◽  
Vol 174-177 ◽  
pp. 3263-3267
Author(s):  
Yan Qun Tang
Keyword(s):  
Functional Analysis ◽  
Management Theory ◽  
Design Stage ◽  
Value Management ◽  
Project Design ◽  
Railway Transportation ◽  
Transportation Projects ◽  
The Cost

This article begins with a brief overview of the characteristics of railway transportation projects,then raises the value management theory can be used to control the cost of the project design Stage.Followed by analysis of the Value Management theory, It emphatically analyzes options and functional analysis of the value management for railway transportation project, Finally, The case explanations the useing of value management in the railway transportation projects design Stage .

scholarly journals A METHODOLOGY TO SUPPORT COMPANIES IN THE FIRST STEPS TOWARDS DE-MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 131-140
Author(s):  
Federica Cappelletti ◽  
Marta Rossi ◽  
Michele Germani ◽  
Mohammad Shadman Hanif
Keyword(s):  
Environmental Impact ◽  
End Of Life ◽  
Design Stage ◽  
Life Strategies ◽  
Disassembly Sequence ◽  
The Status ◽  
The Cost ◽  
Technical Solutions ◽  
First Time ◽  
Complex Activities

AbstractDe-manufacturing and re-manufacturing are fundamental technical solutions to efficiently recover value from post-use products. Disassembly in one of the most complex activities in de-manufacturing because i) the more manual it is the higher is its cost, ii) disassembly times are variable due to uncertainty of conditions of products reaching their EoL, and iii) because it is necessary to know which components to disassemble to balance the cost of disassembly. The paper proposes a methodology that finds ways of applications: it can be applied at the design stage to detect space for product design improvements, and it also represents a baseline from organizations approaching de-manufacturing for the first time. The methodology consists of four main steps, in which firstly targets components are identified, according to their environmental impact; secondly their disassembly sequence is qualitatively evaluated, and successively it is quantitatively determined via disassembly times, predicting also the status of the component at their End of Life. The aim of the methodology is reached at the fourth phase when alternative, eco-friendlier End of Life strategies are proposed, verified, and chosen.

scholarly journals Hospital Construction Cost Affecting Their Lifecycle: An Italian Overview

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 888
Author(s):  
Leopoldo Sdino ◽  
Andrea Brambilla ◽  
Marta Dell’Ovo ◽  
Benedetta Sdino ◽  
Stefano Capolongo
Keyword(s):  
Healthcare Services ◽  
Construction Cost ◽  
Design Stage ◽  
Quality Healthcare ◽  
Healthcare Facilities ◽  
Early Design Stage ◽  
Hospital Facility ◽  
Italian Context ◽  
The Cost ◽  
Cost Components

The need for 24/7 operation, and the increasing requests of high-quality healthcare services contribute to framing healthcare facilities as a complex topic, also due to the changing and challenging environment and huge impact on the community. Due to its complexity, it is difficult to properly estimate the construction cost in a preliminary phase where easy-to-use parameters are often necessary. Therefore, this paper aims to provide an overview of the issue with reference to the Italian context and proposes an estimation framework for analyzing hospital facilities’ construction cost. First, contributions from literature reviews and 14 case studies were analyzed to identify specific cost components. Then, a questionnaire was administered to construction companies and experts in the field to obtain data coming from practical and real cases. The results obtained from all of the contributions are an overview of the construction cost components. Starting from the data collected and analyzed, a preliminary estimation tool is proposed to identify the minimum and maximum variation in the cost when programming the construction of a hospital, starting from the feasibility phase or the early design stage. The framework involves different factors, such as the number of beds, complexity, typology, localization, technology degree and the type of maintenance and management techniques. This study explores the several elements that compose the cost of a hospital facility and highlights future developments including maintenance and management costs during hospital facilities’ lifecycle.

scholarly journals Development of Filters with Minimal Hydraulic Resistance for Underground Water Intakes

2020 ◽  
Vol 6 (5) ◽  
pp. 919-927
Author(s):  
A. A. Akulshin ◽  
N. V. Bredikhina ◽  
An. A. Akulshin ◽  
I. Y. Aksenteva ◽  
N. P. Ermakova
Keyword(s):  
Hydraulic Resistance ◽  
Cross Section ◽  
High Performance ◽  
Underground Water ◽  
Performance Characteristics ◽  
Design Stage ◽  
Performance Loss ◽  
Filter Performance ◽  
Optimal Section ◽  
The Cost

The development of modern structures of water wells filtering equipment with enhanced performance characteristics is a vital task. The purpose of this work was to create filters for taking water from underground sources that have high performance, long service life, quickly and economically replace or repair in case of performance loss. The selection of the filter device must be made taking into account all the geological features of the aquifers, the performance characteristics of the filter devices and the size of the future structure. Filter equipment designs for water intake wells have been developed in this study. These filters have low hydraulic resistance, high performance and are easy to repair. This article presents the dependency of flow inside the receiving part of the well, the dependence of filter resistance at various forms of the cross section of the filter wire and the selected optimal section. The paper proposes a method for selecting the optimal cross-section of the filter wire used in the manufacture of a water well filter. The proposed structures of easy-to-remove well filters with increased productivity allow replacing the sealed well filter with a new one easily, reducing capital and operating costs, and increasing the inter-repair periods of their operation. Based on the presented method, examples are given for selecting the parameters of the filter wire cross-section. The above calculations showed that the use of the hydraulic resistance criterion at the design stage of underground water intakes can significantly reduce the cost of well construction. Studies have found that the minimum hydraulic resistance to ensure maximum filter performance is achieved when using filter wire teardrop and elliptical shapes.

scholarly journals Design of Multiple Mailboxes

2020 ◽  
Vol 318 ◽  
pp. 01041
Author(s):  
Athena Baronos ◽  
Odysseas Manoliadis ◽  
Aristeidis Pavlidis
Keyword(s):  
3D Visualization ◽  
Building Blocks ◽  
Design Stage ◽  
Extensive Literature ◽  
3D Design ◽  
3D Cad ◽  
Domestic Use ◽  
The Right ◽  
The Cost ◽  
Apartment Complexes

In today’s world the design of multiple mailboxes comes to cover the evolution of logistics in delivering mail where the postman is not required to visit every user. In this research the 3D visualization is used for the design of multiple mailboxes for domestic use. It concerns the design of mailboxes in ergonomic building blocks and apartment complexes in 3D design so that they can be easily manufactured. Between the advantages of this design will be rapid production of ready-made products production of prototypes that enables testing at the design stage and reduces the time and the cost of production. The design when done with 3D CAD can be manufactured with modern machine tooling methods. In this paper after an extensive Literature Review the postal multiple mailboxes is used as a case study in the use of 3D CAD for 3D printing. A methodology is proposed that enables the examination of prototypes at the design stage according to specifications and allows the manufacturing department of a company to prepare the right tools and begin installing production lines. Conclusively this method gives the advantage of designing the product and supporting the production of scaffolds that can be functionally and ergonomically tested before finalizing the production.

scholarly journals STUDY OF TARIFFS FOR TRANSPORT SERVICES IN THE EUROPEAN UNION COUNTRIES AND THE RUSSIAN FEDERATION

2021 ◽  
pp. 39-45
Author(s):  
Z. A. Kapelyuk ◽  
Y. V. Popova
Keyword(s):  
European Union ◽  
Russian Federation ◽  
The European Union ◽  
Railway Transportation ◽  
Tariff Policy ◽  
Transportation Services ◽  
Transport Services ◽  
The Russian Federation ◽  
The Cost ◽  
The Impact

The article analyzes the experience of tariff regulation of the cost of passenger railway transportation services in the European Union and the Russian Federation. The features of tariff regulation are disclosed and eleven countries are classified according to the main categories. Tariff policy for transport services is used to ensure the consistency of economic interests of consumers and is a problematic segment for all types of transport. The article deals with tariff regulation of the cost of services provided by the railway infrastructure. Comparison of domestic and foreign experience in pricing of transport services for further development of Russian Railways is carried out. The setting of tariffs and available discounts, as well as benefits for the purchase of tickets for trains in the countries of the European Union and Russia are considered. The indexation of tariffs for transportation services of Russian Railways depending on the period of the trip and the comfort of the car is analyzed. Conclusions on the impact of mobile tariffs on economic efficiency, as well as the need to improve the tariff policy in the Russian Federation by involving foreign transport companies in implementation.

Design to First Deployment: Pressure-Activated Sliding Sleeve for Single-Trip Completion

2021 ◽  
pp. 1-14
Author(s):  
Ashutosh Dikshit ◽  
Amrendra Kumar ◽  
Glenn Woiceshyn
Keyword(s):  
Computer Aided Design ◽  
Failure Modes ◽  
Cost Savings ◽  
Lessons Learned ◽  
Design Stage ◽  
Coiled Tubing ◽  
Side Door ◽  
Safety Risks ◽  
Sand Control ◽  
The Cost

Summary Interest is high in a method to reliably run single-trip completions without involving complex/expensive technologies (Robertson et al. 2019). The reward for such a design would be reduced rig time, safety risks, and completion costs. As described herein, a unique pressure-activated sliding side door (PSSD) valve was developed and field tested to open without intervention after completion is circulated to total depth (TD) and a liner hanger and openhole isolation packers are set. A field-provensliding-sleeve door (SSD) valve that required shifting via a shifting tool run on coiled tubing, slickline (SL), or wireline was upgraded to open automatically after relieving tubing pressure once packers (and/or a liner hanger) are set. This PSSD technology, which is integrable to almost any type of sand control screen, is equipped with a backup contingency should the primary mechanism fail to open. Once opened, the installed PSSDs can be shifted mechanically with unlimited frequency. The two- or three-position valve can be integrated with inflow control devices (ICDs) (includes autonomous ICDs/autonomous inflow control valves) and allows mechanical shifting at any time after installation to close, stimulate or adjust ICD settings. After a computer-aided design stage to achieve all the operational/mechanical requirements, prototypes were built and tested, followed by field installations. The design stage provided some challenges even though the pressure-activation feature was being added to a mature/proven SSD technology. Prototype testing in a full-scale vertical test well proved valuable because it revealed failure modes that could not have appeared in the smaller-scale laboratory test facilities. Lessons learned from the first field trial helped improve onsite handling procedures. The production logging tool run on first installation confirmed the PSSDs with ICDs opened as designed. The second field installation involved a different size and configuration, in which PSSDs with ICDs performed as designed. The unique two- or three-position PSSD accommodates any type of sand control or debris screen and any type of ICD for production/injection. The PSSD allows the flexibility to change ICD size easily at the wellsite. Therefore, this technology can be used in carbonate as well as sandstone wells. Wells that normally could not justify the expense of existing single-trip completion technologies can now benefit from the cost savings of single-trip completions, including ones that require ICD and stimulation options.

Revisiting reliability of estimates at completion for department of defense contracts

2019 ◽  
Vol 19 (3) ◽  
pp. 186-200
Author(s):  
Deborah B. Kim ◽  
Edward D. White ◽  
Jonathan D. Ritschel ◽  
Chad A. Millette
Keyword(s):  
Department Of Defense ◽  
Value Management ◽  
Critical Ratio ◽  
Early Assessment ◽  
Earned Value ◽  
Earned Value Management ◽  
Content Type ◽  
Cent Error ◽  
Defense Contracts ◽  
The Cost

Purpose Within earned value management, the cost performance index (CPI) and the critical ratio (CR) are used to generate the estimates at completion (EACs). According to the research in the 1990s, estimating the final contract’s cost at completion (CAC) using EACCR is a quicker predictor of the actual final cost versus using EACCPI. This paper aims to investigate whether this trend stills holds for modern department of defense contracts. Design/methodology/approach Accessing the Cost Assessment Data Enterprise (CADE) database, 451 contracts consisting of 863 contract line item numbers (CLINs) were initially retrieved and analyzed in three stages. The first replicated the work conducted in 1990s. The second stage entailed calculating 95 per cent confidence intervals and hypothesis tests regarding percentage accuracy of EACs for a contract’s final CAC. Lastly, regression analysis was conducted to characterize major, moderate and minor influencers on EAC reliability. Findings For modern contracts, EACCR aligns more with EACCPI and no longer demonstrates early accuracy of a contract’s final CAC. Contract percentage completion strongly reduced the per cent error of estimating CAC, while cost-plus-fixed-fee contracts and those with no work breakdown structure greater than Level 2 negatively affected accuracy. Social implications To militate against optimism of early assessment of a contract's true cost. Originality/value This paper provides empirical evidence that EACCR behaves more like EACCPI with respect to modern contracts, suggesting that today’s contracts have relatively high SPI. Therefore, caution is warranted for program managers when estimating the CAC from contract initiation up to and slightly beyond the mid-point of completion.

The Problem of Exceeding the Cost of Construction and New Opportunities to Solve it at the Stage of Project Preparation

2018 ◽  
Vol 931 ◽  
pp. 1122-1126
Author(s):  
Sergey G. Oparin
Keyword(s):  
Risk Factors ◽  
Process Approach ◽  
Project Design ◽  
Capital Repair ◽  
Saint Petersburg ◽  
Design Production ◽  
Risk Cost ◽  
The Cost ◽  
Cost Of Construction ◽  
Technology Pricing

The article discusses the problem of exceeding the planned cost of construction, sources of origin and ways to manage the risk of the need for additional financing of construction at the stage of project preparation. The possibilities of solving the problem by substantiating the reserve funds for unforeseen works and costs on the basis of the process approach and the digital model of distributed risk assessment are considered. In order to improve the reliability of determining the cost of construction, the dependence of the reserve funds for unforeseen works and costs, risk cost and risk degree is determined. An example is given of substantiating the reserve funds for unforeseen works and costs in the composition of the summary budget calculation of capital repair of the 1st Yelagin bridge over the Srednyaya Nevka river in Saint-Petersburg taking into account project design, production, technology, pricing, contractual and inflationary risk factors.

The cost performance of transportation projects: The fallacy of the Planning Fallacy account

2019 ◽  
Vol 122 ◽  
pp. 1-20 ◽  
Author(s):  
Peter E.D. Love ◽  
Michael C.P. Sing ◽  
Lavagnon A. Ika ◽  
Sidney Newton
Keyword(s):  
Cost Performance ◽  
Transportation Projects ◽  
Planning Fallacy ◽  
The Cost
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