Railroad, highway, and water transportation systems, 1974

10.3133/32551 ◽  
1977 ◽  
Keyword(s):  
Transportation Systems ◽  
Water Transportation

Determination of head losses in a surge chamber: Robert Bourassa power plant case study

2007 ◽  
Vol 34 (9) ◽  
pp. 1038-1047 ◽  
Author(s):  
Musandji Fuamba ◽  
Gilles Brosseau ◽  
Éric Mainville
Keyword(s):  
Power Plant ◽  
Three Dimensional ◽  
Hydraulic Head ◽  
Transportation Systems ◽  
Flow Conditions ◽  
Flow Models ◽  
Head Losses ◽  
Water Transportation

Optimal management of power plant units is achieved when the global efficiency of the units and the minimization of the total hydraulic head losses through the water transportation systems can be combined. Evaluating these hydraulic head losses appears to be very difficult due to the complexity of the flow conditions through the hydraulic structures. A hydraulic energy based method to determine head losses in the surge chamber has been proposed in this paper, as well as a method to manage the opening of units which would optimize the production of electricity. This method was applied to a case study, and successful results have been obtained showing how the head loss varies in the surge chamber.Key words: hydraulic head losses, power plant unit, surge chamber, unit efficiency, three-dimensional flow conditions, turbulent flow models, computational fluid dynamics.

Boston Harbor Project: Water Transportation Systems Support a Major Urban Construction Project

1997 ◽  
Vol 1608 (1) ◽  
pp. 47-50
Author(s):  
Stephen Corbett
Keyword(s):  
Primary Treatment ◽  
Transportation Systems ◽  
Boston Harbor ◽  
Facility Siting ◽  
Transportation Services ◽  
Water Transportation ◽  
Labor Agreement ◽  
Management Project ◽  
Treatment Facilities ◽  
New Facilities

The Massachusetts Water Resources Authority (MWRA) is an independent authority. MWRA is constructing new primary and secondary wastewater treatment facilities on Deer Island in Boston Harbor. The new facilities will replace two antiquated primary treatment plants located on Deer Island and Nut Island, which is in Quincy Bay. Information on project management, project mitigation, and the facility siting process is provided, and the marine facilities and transportation services and the Boston Harbor Project labor agreement are described.

Measuring particles in drinking water transportation systems with particle counters

2007 ◽  
Vol 56 (5) ◽  
pp. 345-355 ◽  
Author(s):  
J. Q. J. C. Verberk ◽  
K. J. O'Halloran ◽  
L. A. Hamilton ◽  
J. H. G. Vreeburg ◽  
J. C. van Dijk
Keyword(s):  
Drinking Water ◽  
Transportation Systems ◽  
Water Transportation

scholarly journals Risk Cloud Model for Evaluating Nautical Navigational Environments

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Lijia Chen ◽  
Yanfei Tian
Keyword(s):  
Risk Evaluation ◽  
Fuzzy Theory ◽  
Cloud Model ◽  
Transportation Systems ◽  
Risk Levels ◽  
Water Transportation ◽  
Simplified Algorithm ◽  
Cloud Model Theory ◽  
Qualitative And Quantitative Characteristics

Uncertainty makes the risk evaluation of complex water transportation systems (WTSs) a difficult task. To achieve reasonable results while accounting for uncertainty, the risk evaluation of nautical navigational environments (NNEts) is often based on classical cloud model theory. This study proposes the concept of a risk cloud model (RCM) for NNEt evaluation and uses a fuzzy statistics-based computational approach to obtain the RCM parameters. As a case study, the proposed RCM method was applied to the risk evaluation of the Qiongzhou Strait. The performance of the proposed method was compared to those of a fuzzy theory-based method and an earlier proposed simplified algorithm. The results of the case study demonstrated the effectiveness of the proposed method along with several key advantages. First, the method could deal with uncertainty, take advantage of multichannel information, and evaluate risk features. Second, the RCM droplets intuitively displayed the qualitative and quantitative characteristics of risk levels, which facilitated understanding and analysis. Third, it showed a good sensitivity to ensure the refinement of evaluation results. The proposed method offered an improved approach to NNEt risk evaluation under uncertain conditions.

Survey of Practices on Performance Measurement of U.S. Inland Waterway Freight Transportation

2021 ◽  
pp. 036119812098522
Author(s):  
Nahid Parvez Farazi ◽  
Bo Zou ◽  
P.S. Sriraj
Keyword(s):  
Performance Measurement ◽  
Freight Transportation ◽  
Transportation System ◽  
Transportation Systems ◽  
Vital Role ◽  
Inland Waterways ◽  
Inland Water ◽  
Water Transportation ◽  
Inland Waterway ◽  
Performance Measurement Systems

The inland waterway freight transportation system plays a vital role in the trade and commerce of the U.S.A. To ensure that the system performs at an acceptable level, routine monitoring and performance evaluation of the system is critical. Individual states are responsible for developing and implementing suitable performance measurement systems for their respective inland waterways. This paper focuses on surveying, reviewing, and synthesizing current performance measurement practices adopted by different states in the U.S.A. It finds that, among the 38 states with inland navigability, only 12 states have established performance measures to monitor the performance of their inland water transportation systems. To aid the states in developing and enhancing inland waterway performance measurement programs, the paper further outlines the current state of research on inland waterways, recommendations from various federal and maritime organizations, and also current practice outside of the U.S.A. Based on a scan of the publicly available data sources, the paper proposes a two-dimensional performance measurement practice from the perspectives of performance areas and infrastructure types. Such an approach will help state Departments of Transportation to identify system needs and deficiencies while offering a comprehensive picture of performance of an inland water freight transportation system.

scholarly journals A Comparative Study of Two Passenger Transportation Systems between Two Bangladeshi Cities

1970 ◽  
Vol 2 (2) ◽  
pp. 1-10
Author(s):  
K Shahriar Iqbal ◽  
Samir K Shil
Keyword(s):  
Life Cycle ◽  
Water Transport ◽  
Customer Service ◽  
Ecological Impact ◽  
Freight Rate ◽  
Transportation Systems ◽  
Passenger Transportation ◽  
Water Transportation ◽  
Marine Engineering ◽  
Inland Water Transport

Using life cycle impact assessment, required freight rate and the customer service time, the ecological impact and the economic performance of bus and water transportation systems were evaluated and compared for the Dhaka - Narayanganj route in Bangladesh. Then the benefit of modal shifting of passengers from bus to water transport is shown. The results are shown as three different comparison indices. The water transportation showed clear superiority in environmental and economic aspects. Only the ‘service quality' went to the favor of bus.   Keywords: Inland water transport, transportation planning, environmental pollution, life cycle assessment,  sustainable development, Kyoto Protocol.    doi:10.3329/jname.v2i2.928 Journal of Naval Architecture and Marine Engineering 2(2005) 1-10

scholarly journals ENVIRONMENTAL STUDY ON COLLECTING OF RAINWATER HARVESTING AND DETENTION POND DESIGNING TO REDUCE THE LOADS ONTO SANITARY NETWORKS

2021 ◽  
Vol 25 (01) ◽  
pp. 31-43
Author(s):  
Muhsin S. Thajeel ◽  
◽  
Ahmed H. Ali ◽  
Khayyun M. Rahi ◽  
◽  
...  
Keyword(s):  
Water Supply ◽  
Water Resource ◽  
Distribution Systems ◽  
Water Distribution ◽  
Rainwater Harvesting ◽  
Water Shortage ◽  
Transportation Systems ◽  
Environmental Study ◽  
Water Transportation ◽  
Detention Pond

Rainwaters harvesting has been the vital source of water resource for drinkable and non-drinkable purposes in the ancient eras. As the water transportation systems stayed not used for water supply for these times. At present, the water distribution systems have upgraded, but the request to fresh water is increasing due to the inhabitants growing, and development. The water shortages and presented water supply for drinking are limited, which insisted the specialists working in the water division to search for solutions could be applied to the water deficiency that many countries in the world are facing. Optimization of water habit and the management of water resource will be able to aid to passing water shortage. This work contain the first designing and accumulation of rainwater from the rooftop in Baghdad City. Moreover, designing a detention pond using hydrology studio software programme to store the collected water.

scholarly journals Identification and Analysis of Vulnerability in Traffic-Intensive Areas of Water Transportation Systems

2019 ◽  
Vol 7 (6) ◽  
pp. 174 ◽  
Author(s):  
Yong-jun Chen ◽  
Qing Liu ◽  
Cheng-peng Wan ◽  
Qin Li ◽  
Peng-wei Yuan
Keyword(s):  
Yangtze River ◽  
River Estuary ◽  
Transportation Systems ◽  
Laboratory Method ◽  
Yangtze River Estuary ◽  
Flow Density ◽  
The Yangtze River ◽  
Entropy Weight ◽  
Water Transportation ◽  
Proposed Model

Water transportation accidents have occurred frequently in recent years. In order to improve the emergency response capability of water transportation systems under traffic-intensive conditions, this paper identifies and analyzes the vulnerability in traffic-intensive areas of water transportation systems. Firstly, the vulnerability identification model was constructed based on the analysis of characteristics and the vulnerability-influencing factors of water transportation systems. The newly proposed model is composed of three parts including the DEMATEL (Decision Making Trial and Evaluation Laboratory) method, ISM (interpretative structural modeling) model, and AHP (Analytic Hierarchy Process)–entropy weight method. Finally, a case study of the Yangtze River was conducted to test the logicality and feasibility of the proposed model. The research results reveal that traffic flow density, ship traffic, tides, fog, and bad weather are the key factors affecting the vulnerability of water transportation in traffic-intensive areas of the Yangtze River estuary. However, the influence of navigation aid configuration, berth, anchorage, and obstruction on the system vulnerability is relatively lower. The findings of this study can provide helpful references for maritime administration authorities on the management of water transportation safety.

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