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Articles 1 - 30 of 301
Full-Text Articles in Engineering
Modelling Techniques For Slab Track Systems, Mohamed Hafez Fahmy Aly, Islam Mahmoud Abou El-Naga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab
Modelling Techniques For Slab Track Systems, Mohamed Hafez Fahmy Aly, Islam Mahmoud Abou El-Naga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab
Journal of Engineering Research
The railway slab track has replaced the ballast material in the classical ballasted track with reinforced concrete slab or asphalt layer to cope up with the increasing axle loads, train high-speeds, and to reduce overall maintenance cost. This paper aims to investigate the linear and nonlinear behavior of the most common slab track systems (BÖGL, Shinkansen, and RHEDA 2000) using American (AREMA) loads for different soil types to recommend the most suitable analysis type for each component of the slab track systems. Slab track Finite Element models have been built using Midas GTS NX software. The geometric model for each …
Estimation Of Origin-Destination Matrix Using Open-Source Applications Based On Traffic Counts For Mansoura City In Egypt, Ahmed N. Awaad, Sherif M. El-Badawy, Elsayed Abd-Elazem Shwaly, Usama Elrawy Shahdah
Estimation Of Origin-Destination Matrix Using Open-Source Applications Based On Traffic Counts For Mansoura City In Egypt, Ahmed N. Awaad, Sherif M. El-Badawy, Elsayed Abd-Elazem Shwaly, Usama Elrawy Shahdah
Mansoura Engineering Journal
Origin-destination matrices (ODMs) are essential to transportation planning but estimating them can be difficult and expensive. This study presents a framework for estimating ODMs using traffic flow counts using open-source tools. The framework was applied to a dataset from the city of Mansoura in Egypt. The Flowrouter algorithm, which is part of the SUMO microscopic traffic simulation model, was used for routing traffic between traffic flow counting locations. Additionally, the “Implausible Routes” algorithm was used to eliminate unrealistic routes from the generated solution. The results show that the ODM obtained is a reasonable representation of the demand between the different …
A Study On The Preferred Teleworking Policy By The Private Sector And Its Implication To The Demand On Transport Infrastructure (Case Study: Greater Jakarta Area), Alvinsyah Alvinsyah, Edy Hadian, Wahyu Aji Syahputra
A Study On The Preferred Teleworking Policy By The Private Sector And Its Implication To The Demand On Transport Infrastructure (Case Study: Greater Jakarta Area), Alvinsyah Alvinsyah, Edy Hadian, Wahyu Aji Syahputra
CSID Journal of Infrastructure Development
This study examines the implementation of a teleworking policy with a work-from-home (WFH) scheme from a private company perspective and its implications on the Greater Jakarta’s proposed urban rail network’s carrying capacity. Using descriptive and inferential statistical analyses, a representative percentage of employees capable of working from home was determined. This figure, found to be sixty percent, was then employed in a macro transport model simulation to assess its impact on urban rail network demand. The results of the statistical analysis indicate that sixty percent of the company's workforce can still permitted to work remotely. The model simulation conducted indicates …
Reducing Food Scarcity: The Benefits Of Urban Farming, S.A. Claudell, Emilio Mejia
Reducing Food Scarcity: The Benefits Of Urban Farming, S.A. Claudell, Emilio Mejia
Journal of Nonprofit Innovation
Urban farming can enhance the lives of communities and help reduce food scarcity. This paper presents a conceptual prototype of an efficient urban farming community that can be scaled for a single apartment building or an entire community across all global geoeconomics regions, including densely populated cities and rural, developing towns and communities. When deployed in coordination with smart crop choices, local farm support, and efficient transportation then the result isn’t just sustainability, but also increasing fresh produce accessibility, optimizing nutritional value, eliminating the use of ‘forever chemicals’, reducing transportation costs, and fostering global environmental benefits.
Imagine Doris, who is …
Deep Learning Techniques For Efficient Evaluation Of Asphalt Pavement Condition, Kamel Mahdy, Ahmed Zekry, Mohamed Moussa, Ahmed Mohamed, Hassan Mahdy, Mohamed Elhabiby
Deep Learning Techniques For Efficient Evaluation Of Asphalt Pavement Condition, Kamel Mahdy, Ahmed Zekry, Mohamed Moussa, Ahmed Mohamed, Hassan Mahdy, Mohamed Elhabiby
Mansoura Engineering Journal
For the last few decades, researchers have been devising a simple and cost-effective method to evaluate pavement distresses to give decision-makers adequate feedbacks about the pavement condition of a certain road. Fortunately, with the evolution and progression of computer vision tools and techniques, good results had been achieved regarding the detection, classification, and quantification of road distress. In this paper, a new efficient process of road distress analysis using deep learning models is introduced. This new process was tested on a collected road dataset to evaluate the efficiency and speed of this low-cost road maintenance system. Promising results were obtained …
Analysis Of Evolution And Morphology Of Urban And Road Networks: Case Study Lebanon-Nabatiyeh Area, Amal Al Ghorayeb, Adel Elkordi, Ghaleb Faour, Zeinab Jaber, Youssef Attallah
Analysis Of Evolution And Morphology Of Urban And Road Networks: Case Study Lebanon-Nabatiyeh Area, Amal Al Ghorayeb, Adel Elkordi, Ghaleb Faour, Zeinab Jaber, Youssef Attallah
BAU Journal - Science and Technology
This study examines the morphology and evolution of urban and road networks and their relationship with topography in the Lebanon-Nabatiyeh area, by using GIS and remote sensing data. and calculate the annual urban growth percentage rate. The results reveal a clear relationship between the morphology of urban and road networks and their evolution over four periods, as well as the influence of the surrounding topography on their configuration. The study recommends that urban areas should be developed in areas with a slope range of 15º or more to improve the urban structure and infrastructure surrounding them. Understanding the evolution and …
Effectiveness Of Integrated Traffic Management Of Military Police And Traffic Police In Reducing Drive Speed N Arterial Roads: An Experimental Study, Teguh Patriot
CSID Journal of Infrastructure Development
The Indonesian National Police Traffic Corps (KORLANTAS POLRI) and the Army Staff and Command School (SESKOAD) conducted a joint study in early March 2023 to reduce the number of traffic accident victims by implementing traffic regulations by the Military Police and Traffic Police. One of the methods used by KORLANTAS POLRI is the installation of ETLE speed cameras on Jakarta toll roads, such as Cikampek, Jagorawi, Bitung, and others. At the end of 2022, 75 additional speed cameras had been installed on arterial roads in Jakarta.
The purpose of this study is to analyze the effectiveness …
Evaluation Of The Effect Of Mls Density Level Data On Dem, Essam Ghanem, Mostafa Rabah, Fekry Ashraf
Evaluation Of The Effect Of Mls Density Level Data On Dem, Essam Ghanem, Mostafa Rabah, Fekry Ashraf
Mansoura Engineering Journal
Mobile laser scanning (MLS) systems are quickly establishing themselves as the primary source of high-quality digital elevation models (DEM). Data density is the key element that determine the quality of DEMs. Moreover, point density acts a vital role in MLS operation planning and MLS project's cost. This study's goal was to evaluate the impact of point density from MLS on creating DEMs and the accuracy of computed volume in different interpolation methods. The finding demonstrated that the DEM's quality and the volume are more impacted by density level and interpolation method. Interpolation methods are affected by point density. There is …
Stochastic Optimization To Reduce Aircraft Taxi-In Time At Igia, New Delhi, Rajib Das, Saileswar Ghosh, Rajendra Desai, Pijus Kanti Bhuin, Stuti Agarwal
Stochastic Optimization To Reduce Aircraft Taxi-In Time At Igia, New Delhi, Rajib Das, Saileswar Ghosh, Rajendra Desai, Pijus Kanti Bhuin, Stuti Agarwal
International Journal of Aviation, Aeronautics, and Aerospace
Since there is an uncertainty in the arrival times of flights, pre-scheduled allocation of runways and stands and the subsequent first-come-first-served treatment results in a sub-optimal allocation of runways and stands, this is the prime reason for the unusual delays in taxi-in times at IGIA, New Delhi.
We simulated the arrival pattern of aircraft and utilized stochastic optimization to arrive at the best runway-stands allocation for a day. Optimization is done using a GRG Non-Linear algorithm in the Frontline Systems Analytic Solver platform. We applied this model to eight representative scenarios of two different days. Our results show that without …
Autonomous Vehicles On The Smart Roads: Challenges And Potentials, Laura Cristancho, Baleki Campbell, Mahyar Amirgholy
Autonomous Vehicles On The Smart Roads: Challenges And Potentials, Laura Cristancho, Baleki Campbell, Mahyar Amirgholy
The Kennesaw Journal of Undergraduate Research
Self-driving vehicles and smart roads are not new concepts. These ideas have been discussed for many years but for much of this time, the required technology was not available to make them a reality. Just recently has our technology caught up to our ideas and we are beginning to see progress towards the realization of the automated highway system. As the transition to a complete automated system is still in progress, this leaves many questions that still need to be answered as well as allowing for novel solutions to be presented. Using modern research papers to formulate a sound basis …
Fight For Flight: The Narratives Of Human Versus Machine Following Two Aviation Tragedies, Andrew Prahl, Rio Kin Ho Leung, Alicia Ning Shan Chua
Fight For Flight: The Narratives Of Human Versus Machine Following Two Aviation Tragedies, Andrew Prahl, Rio Kin Ho Leung, Alicia Ning Shan Chua
Human-Machine Communication
This study provides insight into the relationship between human and machine in the professional aviation community following the 737 MAX accidents. Content analysis was conducted on a discussion forum for professional pilots to identify the major topics emerging in discussion of the accidents. A subsequent narrative analysis reveals dominant arguments of human versus machine as zero-sum, surrender to machines, and an epidemic of mistrust. Results are discussed in the context of current issues in human-machine communication, and we discuss what other quickly automating industries can learn from aviation’s experience.
Impact Of Covid-19 On Aviation-Wildlife Strikes Across Europe, Isabel C. Metz, Marta Giordano, Dionysios Ntampakis, Marianna Moira, Anneke Hamann, Rosanne Blijleven, Jürgen J. Ebert, Alessandro Montemaggiori
Impact Of Covid-19 On Aviation-Wildlife Strikes Across Europe, Isabel C. Metz, Marta Giordano, Dionysios Ntampakis, Marianna Moira, Anneke Hamann, Rosanne Blijleven, Jürgen J. Ebert, Alessandro Montemaggiori
Human–Wildlife Interactions
Collisions between aircraft and wildlife (i.e., wildlife strikes) pose a serious threat toward the safety of aircraft, its crew, and passengers. The effects of COVID-19 related travel restrictions on wildlife strikes are unknown. With this study, we aim to address this information gap by assessing the changes of wildlife hazard management performance across European airports during the lockdown period (e.g., period of reduced operations and borders closure in spring 2020). We also sought to raise awareness of the importance of wildlife strike prevention in times of reduced operations. The objective of our study was to compare wildlife strike data before …
Air Passenger Demand Forecast Through The Use Of Artificial Neural Network Algorithms, Juan Gerardo Muros Anguita, Oscar Díaz Olariaga
Air Passenger Demand Forecast Through The Use Of Artificial Neural Network Algorithms, Juan Gerardo Muros Anguita, Oscar Díaz Olariaga
International Journal of Aviation, Aeronautics, and Aerospace
Airport planning depends to a large extent on the levels of activity that are anticipated. In order to plan facilities and infrastructures of an airport system and to be able to satisfy future needs, it is essential to predict the level and distribution of demand. This document presents a short- and medium-term forecast of the demand for air passengers carried out through a specific case study (Colombia), in which the impact of the pandemic period due to COVID-19 on air traffic was taken into account. To make the forecast, an algorithm that implements techniques based on Artificial Neural Networks (ANN) …
Estimation Of The Service Life Of Span Structures In Predicting The Durability Of Reinforced Concrete Bridges, Sh.B. Akhmedov, Kh. Almenov, Sh.Sh. Shojalilov, Sh.Sh. Safarov
Estimation Of The Service Life Of Span Structures In Predicting The Durability Of Reinforced Concrete Bridges, Sh.B. Akhmedov, Kh. Almenov, Sh.Sh. Shojalilov, Sh.Sh. Safarov
The Scientific Journal of Vehicles and Roads
In recent years, on the roads of Uzbekistan and other countries, there has been a dangerous increase in various damages in the operated superstructures, caused by an increase in the service life and traffic intensity of vehicles and cargo tension.
Indicators Of Determining The Productivity Of Motor Graders Under Natural Conditions, N.R. Aslonov, S.S. Yusubjonov, S.M. Mirkholiqov
Indicators Of Determining The Productivity Of Motor Graders Under Natural Conditions, N.R. Aslonov, S.S. Yusubjonov, S.M. Mirkholiqov
The Scientific Journal of Vehicles and Roads
In the article, Motor Graders are self-propelled machines that level and shape the ground, and their equipment consists of a fully rotating blade overturner, located between the rear and front bridges of the pneumatic wheel drive.
Evaluation Of Reliability Indicators Of A Transformer Angular Displacement Transducer, S.F. Amirov, M.S. Yakubov, N.R. Yuldashev
Evaluation Of Reliability Indicators Of A Transformer Angular Displacement Transducer, S.F. Amirov, M.S. Yakubov, N.R. Yuldashev
The Scientific Journal of Vehicles and Roads
Based on the analysis of statistical data on the state of transformer angular displacement transducers, the following calculations of probabilistic reliability indicators were performed: failure rate, mean time to failure; the probability of failure-free operation with a sufficiently long operation and gamma-percentage resource; confidence upper and lower bounds are determined, under the chosen conditions of significance, the calculated values satisfy Pearson's χ^2 criterion and therefore do not contradict the experimental data. By analyzing the selected levels of significance, the existence of exponential and normal laws in the laws of probability distribution was revealed.
Warranty And Post-Warranty Service For Vehicles, U.A. Nurullayev, D.M. Zukhurova
Warranty And Post-Warranty Service For Vehicles, U.A. Nurullayev, D.M. Zukhurova
The Scientific Journal of Vehicles and Roads
This article examines the characteristics of warranty and post-warranty service, the specifics of the work to identify problems and take into account the prospects of warranty and post-warranty service development, and compares warranty and post-warranty service before and after equipment purchase.
Processing Of The Results Of Comparisons Of Verification Installations Of The Same Level Of Accuracy, A. Abdukayumov
Processing Of The Results Of Comparisons Of Verification Installations Of The Same Level Of Accuracy, A. Abdukayumov
The Scientific Journal of Vehicles and Roads
Methods of processing the results of comparisons of verification installations of the same level of accuracy on the example of frequency and time standards are considered. A comparative analysis of the methods used to compare the verification installations is performed. The conditions for confirming the metrological status (metrological characteristics) of the verification installations are noted. The method of comparison of verification installations of the same level of accuracy is proposed. The results of the study of the pairwise comparison of frequency and time standards, the difference of the arithmetic mean readings, estimates of the total variance, the arithmetic mean readings …
Method Of Determination Of Characteristics Of Crushed Rocks, B.Yе. Kosymbetov
Method Of Determination Of Characteristics Of Crushed Rocks, B.Yе. Kosymbetov
The Scientific Journal of Vehicles and Roads
The article describes the properties of heat resistance and frost resistance of a cone crusher when crushing rocks, and it is established that the transported stones have an abrasive effect on the cone crusher during crushing. Efficiency, of the crushing chamber, the composition of stones in the deposit, the percentage of their correct use of crushing power during construction work. The abrasive wear of the working bodies of the conical crushers was revealed.
Evaluation Of The Efficiency Of Vehicles And Refrigeration Equipment Transporting Perishable Goods, Q.U. Urinbayev
Evaluation Of The Efficiency Of Vehicles And Refrigeration Equipment Transporting Perishable Goods, Q.U. Urinbayev
The Scientific Journal of Vehicles and Roads
Today, the volume of exports and imports is growing, and the demand for food is growing as the world's population grows. Further improvement of the rules of transportation of goods by road, as well as improving the safety of transportation of perishable products is a very important issue. One of the vehicles designed to transport perishable goods in road transport is a refrigerator. Selecting the thickness of the panels for the refrigerator compartment of the refrigerator One of the main applications in rigid polyurethane foam is the use of turgon wall wall sandwich panels as a layer of thermal insulation …
Methods For Assessing The Efficiency Of Urban Public Transport, A.A. Nazarov
Methods For Assessing The Efficiency Of Urban Public Transport, A.A. Nazarov
The Scientific Journal of Vehicles and Roads
The article presents methods for assessing the effectiveness of urban public transport based on the analysis of the operational characteristics of their types. Methods for a comprehensive assessment of options for solving the urban public transport system are analyzed.
Indicator Of Accident And Analysis Of Existing Problems Of Ensuring Traffic Safety In Major Cities Of Uzbekistan, Jamshid Abdunazarov
Indicator Of Accident And Analysis Of Existing Problems Of Ensuring Traffic Safety In Major Cities Of Uzbekistan, Jamshid Abdunazarov
Scientific-technical journal
This article is devoted to the analysis of accidents and road safety in large cities of the Republic of Uzbekistan such as Bukhara, Fergana and Samarkand. And also, statistical data of road traffic accidents are processed throughout the republic. Such factors as transport risk, social risk and severity of the consequences of a road traffic accident have been identified. In conclusion, the author's opinion on the factors affecting road safety in the republic is presented.
Cross-Checking Automated Passenger Counts For Ridership Analysis, Simon Berrebi, Sanskruti Joshi, Kari Watkins
Cross-Checking Automated Passenger Counts For Ridership Analysis, Simon Berrebi, Sanskruti Joshi, Kari Watkins
Journal of Public Transportation
Due to concerns about data quality, Automated Passenger Counting technology has rarely been used to analyze local ridership trends. This paper presents a novel framework to test the consistency and completeness of passenger count data in four cities. The data are aggregated at the system level and compared with the National Transit Database between 2012 and 2018. In all four agencies, passenger counts closely follow the fluctuations observed in the national transit database. There is, however, a slight drift in two of the four agencies. At the stop-level, missing and duplicate vehicle-trips are identified using schedule data from the General …
Driver Perceptions On Taxi-Sharing And Dynamic Pricing In Taxi Services: Evidence From Athens, Greece., Christina Milioti, Konstantinos Kepaptsoglou, Konstantinos Kouretas, Eleni Vlahogianni
Driver Perceptions On Taxi-Sharing And Dynamic Pricing In Taxi Services: Evidence From Athens, Greece., Christina Milioti, Konstantinos Kepaptsoglou, Konstantinos Kouretas, Eleni Vlahogianni
Journal of Public Transportation
The taxi industry has changed dramatically during the last decade, as ride-sourcing applications, ride-sharing and alternative pricing schemes have emerged, either as complementing or competitive services and strategies. After some years of familiarity with such trends, it is interesting to explore where the taxi industry stands with respect to possible service innovations. This paper explores behavioral patterns of drivers, focusing on issues such as their preferred way of conducting business, and their views on introducing taxi-sharing and dynamic pricing. Data collected from a face-to-face questionnaire survey in Athens, Greece are exploited, and appropriate econometric models are developed for the purposes …
Using Fuzzy Clustering Of User Perception To Determine The Number Of Level-Of-Service Categories For Bus Rapid Transit, Yueying Huo, Jinhua Zhao, Xiaojuan Li, Chen Guo
Using Fuzzy Clustering Of User Perception To Determine The Number Of Level-Of-Service Categories For Bus Rapid Transit, Yueying Huo, Jinhua Zhao, Xiaojuan Li, Chen Guo
Journal of Public Transportation
The concept of level of service (LOS) is meant to reflect user perception of the quality of service provided by a transportation facility or service. Although the LOS of bus rapid transit (BRT) has received considerable attention, the number of levels of service of BRT that a user can perceive still remains unclear. Therefore, in this paper, we address this issue using fuzzy clustering of user perception. User perception is defined as a six-dimension vector of the perceived arrival time, perceived waiting time, bus speed perception, passenger load perception, perceived departure time, and overall perception. A smartphone-based transit travel survey …
Understanding Transantiago Users’ Motivations For Paying Or Evading Payment Of Bus Fares, Carolina Busco, Felipe González, Yamil Jaqueih, Felipe Jiménez, Borja Alonso
Understanding Transantiago Users’ Motivations For Paying Or Evading Payment Of Bus Fares, Carolina Busco, Felipe González, Yamil Jaqueih, Felipe Jiménez, Borja Alonso
Journal of Public Transportation
Transantiago, the public transport system implemented in Santiago, Chile, remains a controversial subject of public debate due to constantly increasing fare evasion rates throughout its decade-long existence. The
Transantiago, the public transport system implemented in Santiago, Chile, remains a controversial subject of public debate due to constantly increasing fare evasion rates throughout its decade-long existence. The research question under consideration in this paper is as follows: What motivates individuals to evade or pay bus fares? To answer this question, we developed a multidisciplinary study that combined relevant engineering expertise with a sociological perspective and combined quantitative analyses with qualitative methodologies …
People-Focused And Near-Term Public Transit Performance Analysis, Alex Karner
People-Focused And Near-Term Public Transit Performance Analysis, Alex Karner
Journal of Public Transportation
Public transit ridership forecasts have long played a role in understanding the potential success of a policy or investment, but their limitations have led researchers and practitioners to identify other performance analysis approaches. Accessibility, or the ease of reaching opportunities, has become very popular and widely used for this purpose. But commonly used accessibility measures also embody weaknesses that are seldom acknowledged; these limit their utility for truly understanding the benefits of transit investments. In this paper, we identify the pros and cons of these competing approaches and offer a third strategy. Specifically, we describe how revealed travel behavior data, …
Analysis Of Scientific Work On The Composition Of A Mixture Of Sulfur-Containing Asphalt And The Selection Of The Composition Of A Mixture Of Sulfur-Containing Asphalt, A.T Mamatmuminov, I.S. Sadikov
Analysis Of Scientific Work On The Composition Of A Mixture Of Sulfur-Containing Asphalt And The Selection Of The Composition Of A Mixture Of Sulfur-Containing Asphalt, A.T Mamatmuminov, I.S. Sadikov
The Scientific Journal of Vehicles and Roads
On the walls of the corpse valtingoproptally-modification of modifications applied technology Burich recommendations berylgan. The Association of Uni and Uni bitumen bilan gardens Akhun-modifier - complex ether (efirga hidamli tripinuidlar) ullandi, shuningdek oltingugurtli bitumni is prepared by jasper-ketligia liar recommendlar.
The Very Position Of The Geosynthet Meeting Of The Working Group, S.I. Komilov
The Very Position Of The Geosynthet Meeting Of The Working Group, S.I. Komilov
The Scientific Journal of Vehicles and Roads
Screeching, as it turned out, Uzbekistan conditions establishing ethylaethan car johnllari judah difficult conditions suningdek physicist mechanic features turlicha bulgan gruntlada olib beard. Inle tuzilma elementlarikonligini,turgunligi shungdek yir tuzam framilyavlarini YUK Kulyaba ability to provide basic platonai avmani. Keshimoga announced dolinashadigan Bullsak, Jul kuziyavalash and gadyazda kuchirivchi zhumladman geosynthetic materialar cuttercatic declarati sitag Olgan hailik zarda technologist heat INS inshashirze metadze.
Some Issues Of Forecasting Deformation And Destruction On Highways, А.Х. Urakov, М.Т. Mamatkulov
Some Issues Of Forecasting Deformation And Destruction On Highways, А.Х. Urakov, М.Т. Mamatkulov
The Scientific Journal of Vehicles and Roads
The article analyzes the existing methods of forecasting deformations and destructions on highways, identifies the causes of deformations and destructions, and provides recommendations for the prevention of defects on roads. There are no criteria for assessing the properties of road-building materials in terms of the degree of destruction and the intensity of the destruction process.