scholarly journals Multiphase Approach to Developing Model of Logistics for Coastal Tourist Destinations

2014 ◽  
Vol 26 (5) ◽  
pp. 405-418 ◽  
Author(s):  
Željko Ivanović ◽  
Sanja Bauk
Keyword(s):  
Traffic Congestion ◽  
High Speed ◽  
Functional Model ◽  
Simultaneous Optimization ◽  
Positive Trend ◽  
Tourist Destinations ◽  
Network Time ◽  
Process Of Urbanization ◽  
Novel Model ◽  
The Eu

The process of urbanization of coastal tourist destinations (CTDs) is taking place at high speed and at the same time creating a lot of complex problems. The positive trend of urbanization has resulted in increased volume of freight transport which leads to burdening the traffic network, time losses and causes traffic congestion problems on the streets with increased environmental pollution due to emissions, noise and vibration. These findings brought to some research being started on the EU level, aiming to develop new logistic solutions, so these areas could be developed on a sustainable basis. With this in mind, the paper proposes a method of developing a novel model of logistics (MoL) for CTDs through several stages. The point of proposed MoL lies in achieving optimal connectivity of transportation, warehousing and physical distribution of goods, and making it a single functional model, so as to allow simultaneous optimization of logistic processes in a CTD, and to incorporate logistics in tourist offer.

Heavy Weather in European Short Sea Shipping: Its Influence on Selected Routes

2007 ◽  
Vol 61 (1) ◽  
pp. 165-176 ◽  
Author(s):  
F Xavier Martínez de Osés ◽  
Marcel.la Castells
Keyword(s):  
Traffic Congestion ◽  
High Speed ◽  
Road Transport ◽  
White Paper ◽  
Sea Transport ◽  
Short Sea Shipping ◽  
The Eu

According to the mid-term review of the EU White Paper on Transport, short sea shipping is expected to grow at a rate of 59% in metric tonnes, from 2000 to 2020. If we consider that the overall expected growth in freight exchanges is of some 50%, sea transport is one of the most feasible ways to reduce traffic congestion on European roads. High speed vessels are a possible way to compete with road transport on certain routes; however, these ships are highly affected by heavy weather. This paper analyses the weather influence on several short sea shipping routes to be served by fast ships.

A Selection of Bandung City Travel Route Using The FLOYD-WARSHALL Algorithm

2020 ◽  
Vol 12 (7) ◽  
Author(s):  
Muhammad Ghifari Arfananda ◽  
◽  
Surya Michrandi Nasution ◽  
Casi Setianingsih ◽  
◽  
...  
Keyword(s):  
Traffic Congestion ◽  
Rapid Development ◽  
Route Selection ◽  
Tourist Attractions ◽  
Tourist Destinations ◽  
A Value ◽  
Distance Data ◽  
Simple Additive Weighting ◽  
The City ◽  
Selection Of

The rapid development of information and technology, the city of Bandung tourism has also increased. However, tourists who visit the city of Bandung have problems with a limited time when visiting Bandung tourist attractions. Traffic congestion, distance, and the number of tourist destinations are the problems for tourists travel. The optimal route selection is the solution for those problems. Congestion and distance data are processed using the Simple Additive Weighting (SAW) method. Route selection uses the Floyd-Warshall Algorithm. In this study, the selection of the best route gets the smallest weight with a value of 5.127 from the Algorithm process. Based on testing, from two to five tourist attractions get an average calculation time of 3 to 5 seconds. This application is expected to provide optimal solutions for tourists in the selection of tourist travel routes.

scholarly journals 3 kW Thermoelectric Generator for Natural Gas-Powered Heavy-Duty Vehicles—Holistic Development, Optimization and Validation

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 15
Author(s):  
Lars Heber ◽  
Julian Schwab ◽  
Timo Knobelspies
Keyword(s):  
Natural Gas ◽  
Thermoelectric Generator ◽  
Functional Model ◽  
Simultaneous Optimization ◽  
Heavy Duty ◽  
Holistic Model ◽  
Average Deviation ◽  
Vehicle Class ◽  
Thermoelectric Modules ◽  
Heavy Duty Vehicles

Emissions from heavy-duty vehicles need to be reduced to decrease their impact on the climate and to meet future regulatory requirements. The use of a cost-optimized thermoelectric generator based on total cost of ownership is proposed for this vehicle class with natural gas engines. A holistic model environment is presented that includes all vehicle interactions. Simultaneous optimization of the heat exchanger and thermoelectric modules is required to enable high system efficiency. A generator design combining high electrical power (peak power of about 3000 W) with low negative effects was selected as a result. Numerical CFD and segmented high-temperature thermoelectric modules are used. For the first time, the possibility of an economical use of the system in the amortization period of significantly less than 2 years is available, with a fuel reduction in a conventional vehicle topology of already up to 2.8%. A significant improvement in technology maturity was achieved, and the power density of the system was significantly improved to 298 W/kg and 568 W/dm3 compared to the state of the art. A functional model successfully validated the simulation results with an average deviation of less than 6%. An electrical output power of up to 2700 W was measured.

scholarly journals Features of Physical Preparation of Students for Passing the GTO Standards

2021 ◽  
Vol 4 (4) ◽  
pp. 22-26
Author(s):  
Oksana Anatolevna Sbitneva
Keyword(s):  
Physical Fitness ◽  
Physical Training ◽  
High Speed ◽  
Effective Means ◽  
Educational Process ◽  
Physical Culture ◽  
Successful Implementation ◽  
Positive Trend ◽  
Gradual Change ◽  
Educational Potential

The article deals with the problems of motor activity, the development of physical qualities and speed abilities of students. The importance of physical culture and physical fitness is revealed. The search for effective means and methods of physical culture in preparation for passing the GTO standards is analyzed. The features of physical training of high-speed orientation of students to pass the GTO standards for speed are considered. The effectiveness of the use of speed-oriented exercises, which are necessary for students to achieve the norms of the GTO complex for speed, within the framework of physical culture classes, is revealed. Research methods. In the course of the study, a comparative analysis of the results was carried out. The method of control tests was used. The overall assessment of the effectiveness of the above tools and methods is expressed in positive dynamics. The results of the study. According to the results of the study, there is a positive trend. The analysis of the results according to the table of GTO standards in the framework of physical culture classes allows us to note the growth of indicators for all established tests. Systematic classes using high-speed, high-speed and power-oriented exercises with a gradual change in the load, improving the technique of performing exercises, contribute to the development of the physical quality «speed». Conclusions. Regular physical education classes with the use of speed exercises contribute to the development and improvement of physical qualities, the achievement of growth rates of GTO standards. The level of readiness of students to fulfill the norms and requirements of the GTO complex at the average level. Affordable, effective means and methods of physical training make it possible to actively use the scientific and educational potential of the university. The purposeful organization of the educational process contributes to achieving the proper level of physical fitness necessary for the successful implementation of the regulatory requirements of the AR PCS Complex GTO.

scholarly journals Simultaneous Optimization of Train Timetabling and Platforming Problems for High-Speed Multiline Railway Network

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Qin Zhang ◽  
Xiaoning Zhu ◽  
Li Wang ◽  
Shuai Wang
Keyword(s):  
High Speed ◽  
Optimization Problems ◽  
Programming Model ◽  
Simultaneous Optimization ◽  
Resource Assignment ◽  
Railway Network ◽  
High Speed Railway ◽  
Train Timetabling ◽  
Train Timetable ◽  
Railway Operation

The optimization problems of train timetabling and platforming are two crucial problems in high-speed railway operation; these problems are typically considered sequentially and independently. With the construction of high-speed railways, an increasing number of interactions between trains on multiple lines have led to resource assignment difficulties at hub stations. To coordinate station resources for multiline train timetables, this study fully considered the resources of track segments, station throat areas, and platforms to design a three-part space-time (TPST) framework from a mesoscopic perspective to generate a train timetable and station track assignment simultaneously. A 0-1 integer programming model is proposed, whose objective is to minimize the total weighted train running costs. The construction of a set of incompatible vertexes and links facilitates the expression of difficult constraints. Finally, example results verify the validity and practicability of our proposed method, which can generate conflict-free train timetables with a station track allocation plan for multiple railway lines at the same time.

Risk Evaluation at the Preliminary Design Stage of a High-Speed Craft

2004 ◽  
Vol 20 (03) ◽  
pp. 183-187
Author(s):  
Richard Birmingham ◽  
Jon McGregor ◽  
Severine Delautre ◽  
Jean-Claude Astrugue
Keyword(s):  
High Speed ◽  
Design Tool ◽  
Transport Infrastructure ◽  
Design Stage ◽  
Safety Issues ◽  
Research Areas ◽  
Marine Industry ◽  
Preliminary Design Stage ◽  
Eu Project ◽  
The Eu

Due to the congestion of the traditional transport infrastructure across Europe, the EU has developed the EU Common Transport Policy. This policy endorses the use of waterborne craft to ease onshore congestion. In addition to this there have been follow-up measures in the form of "short sea shipping" and lately the concept of "quality shipping" has surfaced to allay concerns arising from the standards of shipping. It is with this backdrop that an increase in demand for high-speed craft (HSC) has occurred. This in turn has created new concerns of how the safety of HSC can be assured when there is such a lack of historical data. To deal with these concerns, there has been a call for new design tools and methodologies to be developed that raise the profile of safety issues from the very beginning of the design process. It was with this in mind that funding was granted for an EU project called Safety at Speed (S@S), the details of which are described in the paper. S@S is made up of 15 partners spread throughout the EU. The partners come from all areas of the marine industry, including universities, designers/builders, class societies, and operators. The project has been split into six research areas. These are collision and grounding, motions, foundering, containment of damage and fire, integration, and case study. The paper is written from the perspective of the integration work package and describes in detail the driving "vision" behind the project. The perceived structure of the project is examined. The problems that the partners have had to overcome are laid out. These problems have led to an evolution of the interrelationships of work packages. The paper goes on to discuss the use of parameters and how their different forms can be incorporated into the design tool with reference to vast fluctuations in quality of input data. Finally, there is a discussion of how the output results from use of the tool, both for risk and cost, can most usefully be presented.

scholarly journals Review of the Design and Technology Challenges of Zero-Emission, Battery-Driven Fast Marine Vehicles

2020 ◽  
Vol 8 (11) ◽  
pp. 941
Author(s):  
Apostolos D. Papanikolaou
Keyword(s):  
High Speed ◽  
Ship Design ◽  
Design And Technology ◽  
Marine Vehicles ◽  
Battery Capacity ◽  
Critical Issues ◽  
Safety Constraints ◽  
Funded Project ◽  
Zero Emission ◽  
The Eu

The paper deals with a critical review of unique problems and challenges related to the design and technology of zero-emission, battery driven, fast marine vehicles. The uniqueness of the ensuing ship design problem is the request to fit maximum battery capacity and to ensure minimum required power in order to achieve the set operational requirements for high service speed and sufficient range. The high-speed requirement is inherently connected with the request for minimum structural and lightship weight, while the design needs also to comply with set regulatory safety constraints. The underlying research is in the frame of the EU funded project TrAM (Transport: Advanced and Modular) and leads to the development and construction of a physical demonstrator for operation in the Stavanger area in Norway. The paper discusses the incurring critical issues, discusses the feasibility of the concept and concludes on the way ahead.

Finite element simulation of folding carton erection failure

2007 ◽  
Vol 221 (7) ◽  
pp. 753-767 ◽  
Author(s):  
D M Sirkett ◽  
B J Hicks ◽  
C Berry ◽  
G Mullineux ◽  
A J Medland
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
High Speed ◽  
Element Model ◽  
Machine Material ◽  
Linear Elastic ◽  
Element Simulation ◽  
Packaging Industry ◽  
First Time ◽  
The Eu

In response to recent European Union (EU) regulations on packaging waste, the packaging industry requires greater fundamental understanding of the machine-material interactions that take place during packaging operations. Such an understanding is necessary to handle thinner lighter-weight materials, specify the material properties required for successful processing and design right-first-time machinery. The folding carton industry, in particular, has been affected by the new legislation and needs to realize the potential of computational tools for simulating the behaviour of packaging materials and generating the necessary understanding. This paper describes the creation and validation of a detailed finite element model of a carton during a common packaging operation. The model is applied here to address the problem of carton buckling. The carton was modelled using a linear elastic material definition with non-linear crease behaviour. Air inrush suction, which is believed to cause buckling, was quantified experimentally and incorporated using contact damping interactions. The results of the simulation are validated against high-speed video of carton production. The model successfully predicts the pattern of deformation of the carton during buckling and its increasing magnitude with production rate. The model can be applied to study the effects of variation in material properties, pack properties and machine settings. Such studies will improve responsiveness to change and will ultimately allow end-users to use thinner, lighter-weight materials in accordance with the EU regulations.

Analysis and Optimization of Hangzhou East Area Traffic Based on the Congestion Index Detection Platform

2014 ◽  
Vol 1030-1032 ◽  
pp. 2182-2186
Author(s):  
Ling Yan Ge ◽  
Bi Feng Zhu
Keyword(s):  
Automobile Industry ◽  
Traffic Congestion ◽  
High Speed ◽  
Road Traffic ◽  
Rapid Development ◽  
Traffic Demand ◽  
The Road ◽  
Fast Pace ◽  
Urbanization In China ◽  
Congestion Index

With the rapid development of urbanization in China and the motorization’s fast pace of high speed as well as the national automobile industry process, many cities in our country have been facing a huge problem - traffic congestion in recent years. And the essence of the problem is the imbalance between road traffic supply and traffic demand in the process of urban development. Aimed at the problem of traffic congestion, this paper based on Hangzhou city’s traffic congestion index of monitoring data from testing platform and statistical data from field survey , studied the Hangzhou east area of road traffic running situation, analyzed the causes of the east area of Hangzhou road congestion, and thus to adjust and optimize the road traffic system of the area, put forward reasonable system solutions and proposals to improve the management level

ON A REFINED CYCLIC RESERVATION-BASED MAC SCHEME FOR ULTRA HIGH-SPEED HIERARCHICAL RING MANS

1998 ◽  
Vol 08 (03) ◽  
pp. 379-404
Author(s):  
WEN-FONG WANG ◽  
LING-YANG KUNG
Keyword(s):  
Access Control ◽  
Traffic Congestion ◽  
High Speed ◽  
Control Method ◽  
Mac Protocol ◽  
Network Resources ◽  
Medium Access ◽  
Network Bandwidth ◽  
Mac Scheme ◽  
Fair Access

To support a great number of dispersed users in a wider area with high-speed communication services, we investigate a highly efficient medium access control (MAC) scheme for the hierarchical ring networks. In these networks, traffic congestion may happen due to the mismatch of transmission speed between backbone and outer rings. To cope with the issue, we propose a refined MAC protocol based on the cyclic reservation-based access control method for different network resources, viz. network bandwidth and buffers. By this approach, our protocol can achieve fair access to the network resources and avoid traffic congestion at the same time. Also, the networks will have the properties of extremely high throughput, low delay, fair access, simple implementation, and so forth. To evaluate the network, several simulative experiments are performed and some optimistic results are revealed.

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