Analysis of Planning Factors of Highway Route Design

2021 ◽  
Keyword(s):  
Route Design

An efficient route design for solid waste collection using graph theory and the algorithm of the traveling agent in dynamic programming

2021 ◽  
Vol 193 (5) ◽  
Author(s):  
Moisés Filiberto Mora Murillo ◽  
Walter Alfredo Mora Murillo ◽  
Luis Xavier Orbea Hinojosa ◽  
Arlys Michel Lastre Aleaga ◽  
Gabriel Estuardo Cevallos Uve ◽  
...  
Keyword(s):  
Dynamic Programming ◽  
Graph Theory ◽  
Solid Waste ◽  
Waste Collection ◽  
Solid Waste Collection ◽  
Route Design ◽  
Efficient Route

ChemInform Abstract: 2,4-Dinitrophenol: A Novel Activating Reagent in Nucleotide Synthesis via the Phosphoramidite Route. Design of New Effective Phosphitylating Reagents.

ChemInform ◽  
2000 ◽  
Vol 31 (52) ◽  
pp. no-no
Author(s):  
Wojciech Dabkowski ◽  
Izabela Tworowska ◽  
Jan Michalski ◽  
Friedrich Cramer
Keyword(s):  
Nucleotide Synthesis ◽  
Route Design

Route design for community patrol by aircraft

2017 ◽  
Author(s):  
Da Liu ◽  
Houjun Yang
Keyword(s):  
Route Design

Regulatory Schemes on Public Transport

2017 ◽  
Vol 2649 (1) ◽  
pp. 113-121 ◽  
Author(s):  
Vicente Huerta ◽  
Patricia Galilea
Keyword(s):  
Analytical Solutions ◽  
Private Initiative ◽  
Route Design ◽  
Innovative Solutions ◽  
Payment Schemes ◽  
Innovative Capabilities ◽  
Urban Bus ◽  
Open Question ◽  
Optimal Tariff

Regulatory schemes have remained an open question about the implementation of an urban bus system. Because of the introduction of a higher private initiative within these systems, the expectation of increased patronage has not been met. Hence, studying the effect of regulation on innovation becomes the first objective of this research because innovative solutions may help to attract users. To fulfill that objective, an analysis of innovative capabilities was carried out. The aim was to understand the gap between potential and practical innovation on the authorities and operators. The second objective was to use theoretical modeling to find the effect of payment schemes on frequency and bus size. Both analyses used as a case study the experience of Transantiago in Santiago, Chile. Innovation proved to be dependent on the regulatory scheme in which an operation was framed. Both authorities and operators showed the existence of innovative capabilities dependent on the perceived incentives. Trusting cooperation was an aspect that might have encouraged some types of innovation, such as route design. Analytical solutions showed that as in the experience of Transantiago, supply-based payments provided higher frequency and smaller bus size than fixed payments. Finally, an optimal tariff gave incentives to the operators to provide socially optimal levels of frequency and bus size for a certain demand level.

scholarly journals A Hybrid Ant Colony and Cuckoo Search Algorithm for Route Optimization of Heating Engineering

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2675 ◽  
Author(s):  
Yang Zhang ◽  
Huihui Zhao ◽  
Yuming Cao ◽  
Qinhuo Liu ◽  
Zhanfeng Shen ◽  
...  
Keyword(s):  
Ant Colony Optimization ◽  
Optimization Algorithm ◽  
Search Algorithm ◽  
Fitness Function ◽  
Cuckoo Search ◽  
Cuckoo Search Algorithm ◽  
Ant Colony ◽  
Ant Colony Optimization Algorithm ◽  
Elapsed Time ◽  
Route Design

The development of remote sensing and intelligent algorithms create an opportunity to include ad hoc technology in the heating route design area. In this paper, classification maps and heating route planning regulations are introduced to create the fitness function. Modifications of ant colony optimization and the cuckoo search algorithm, as well as a hybridization of the two algorithms, are proposed to solve the specific Zhuozhou–Fangshan heating route design. Compared to the fitness function value of the manual route (234.300), the best route selected by modified ant colony optimization (ACO) was 232.343, and the elapsed time for one solution was approximately 1.93 ms. Meanwhile, the best route selected by modified Cuckoo Search (CS) was 244.247, and the elapsed time for one solution was approximately 0.794 ms. The modified ant colony optimization algorithm can find the route with smaller fitness function value, while the modified cuckoo search algorithm can find the route overlapped to the manual selected route better. The modified cuckoo search algorithm runs more quickly but easily sticks into the premature convergence. Additionally, the best route selected by the hybrid ant colony and cuckoo search algorithm is the same as the modified ant colony optimization algorithm (232.343), but with higher efficiency and better stability.

scholarly journals Problems of Designing Transport Systems of «siberian Antrazit»

2021 ◽  
Author(s):  
Natalia Gorbunova ◽  
Oleg Mirkushov
Keyword(s):  
Bellman Equation ◽  
Railway Track ◽  
Open Pit ◽  
Motor Vehicles ◽  
Transport Systems ◽  
Dynamic Programming Method ◽  
Optimal Route ◽  
Open Pit Mines ◽  
Route Design ◽  
Delivery Route

Abstract The main aim of this work was to identify an optimal route design for the delivery of coal from the open pit mines to the enrichment plants on the example of the Sibathractic Group’s mine “Kolyvansk” and its enrichment plants «Listvjanskaja-1» and «Listvjanskaja-2». The new route would allow the corporation to increase production rates and to reduce the risks associated with the use of motor vehicles. Dynamic programming method, mainly the Bellman equation principle, was chosen as an algorithm for searching for the optimal route from Kolyvansky mine to the «Listvjanskaja-1» and «Listvjanskaja-2». In the course of the study the two possible routes were selected. Further comparison indicated that only one of them - “2nd railway track”, corresponded to all the recommended parameters for the delivery route. All the findings are presented in detail in the study.

scholarly journals Application of Offshore HDPE Pipes Route Design in North Maluku Indonesia

2021 ◽  
Vol 26 (1) ◽  
pp. 45-56
Author(s):  
Franto Novico ◽  
Indra Kurniawan ◽  
Andi Egon ◽  
Davide Merli
Keyword(s):  
Concrete Block ◽  
Hydrodynamic Conditions ◽  
Seabed Sediment ◽  
Single Beam ◽  
Drag Forces ◽  
Route Design ◽  
Minimum Dimension ◽  
The Right ◽  
Alternative Routes ◽  
Hdpe Pipes

The lack of fresh water for the inhabitants of Maitara island is a very urgent problem to be solved. Two main factors at least must be taken into account to deliberate the right of way of subsea High-density polyethylene (HDPE) pipes, namely the hydrodynamic conditions and of a block analysis. This paper presents the study to justify the best route of subsea HDPE pipes based on hydrodynamic model analysis and concrete block strategy. The method used to analyze the best route includes 2 aspects. Firstly, the investigation method consisting of a bathymetric survey conducted by a single beam echosounder, 15 days tidal observations and seabed sediment sampling. Secondly, the hydrodynamic modelling analysis using Mike 21 FMHD and concrete block analysis, all these studies have been completed in August 2018. In the morphological behaviour analysis, three alternative routes are considered for the subsea HDPE pipes from Tidore Island to Maitara Island. The outcome of the analysis shows that the second track line option has the smallest impact by the hydrodynamic conditions, with a current speed of less than 0,5m/sec and a significant wave height of fewer than 1.2 meters. Furthermore, the uniformity of the lithology along the route is the other reason to select the second route. Finally, the concrete block analysis generated a minimum dimension of 75cm x 60cm x 30cm, and a free span of 3 meters is safe to absorb the uplift and drag forces acting on the pipe.

scholarly journals Bicycling crashes on streetcar (tram) or train tracks: mixed methods to identify prevention measures

2021 ◽  
Author(s):  
Kay Teschke ◽  
Jessica Dennis ◽  
Conor C. O. Reynolds ◽  
Meghan Winters ◽  
M. Anne Harris
Keyword(s):  
Mixed Methods ◽  
Urban Areas ◽  
Prevention Measures ◽  
The Road ◽  
Rail Systems ◽  
Route Design ◽  
Individual Knowledge ◽  
Engineering Information ◽  
Train Tracks ◽  
Width Measurements

Background Streetcar or train tracks in urban areas are difficult for bicyclists to negotiate and are a cause of crashes and injuries. This study used mixed methods to identify measures to prevent such crashes, by examining track-related crashes that resulted in injuries to cyclists, and obtaining information from the local transit agency and bike shops. Methods We compared personal, trip, and route infrastructure characteristics of 87 crashes directly involving streetcar or train tracks to 189 crashes in other circumstances in Toronto, Canada. We complemented this with engineering information about the rail systems, interviews of personnel at seven bike shops about advice they provide to customers, and width measurements of tires on commonly sold bikes. Results In our study, 32 % of injured cyclists had crashes that directly involved tracks. The vast majority resulted from the bike tire being caught in the rail flangeway (gap in the road surface alongside rails), often when cyclists made unplanned maneuvers to avoid a collision. Track crashes were more common on major city streets with parked cars and no bike infrastructure, with left turns at intersections, with hybrid, racing and city bikes, among less experienced and less frequent bicyclists, and among women. Commonly sold bikes typically had tire widths narrower than the smallest track flangeways. There were no track crashes in route sections where streetcars and trains had dedicated rights of way. Conclusions Given our results, prevention efforts might be directed at individual knowledge, bicycle tires, or route design, but their potential for success is likely to differ. Although it may be possible to reach a broader audience with continued advice about how to avoid track crashes, the persistence and frequency of these crashes and their unpredictable circumstances indicates that other solutions are needed. Using tires wider than streetcar or train flangeways could prevent some crashes, though there are other considerations that lead many cyclists to have narrower tires. To prevent the majority of track-involved injuries, route design measures including dedicated rail rights of way, cycle tracks (physically separated bike lanes), and protected intersections would be the best strategy.

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