scholarly journals Experimental Investigation on Condition Monitoring Opportunities of Tramway Tracks

2017 ◽  
Author(s):  
Ákos Vinkó ◽  
Péter Bocz
Keyword(s):  
Urban Areas ◽  
Real Data ◽  
Actual State ◽  
Prototype System ◽  
Good Opportunity ◽  
Track Geometry ◽  
Railway Company ◽  
Transportation Modes ◽  
Deterioration Process ◽  
Instrumented Vehicle

The increasing demands for guided transportation modes in urban areas generate the need of high-frequency services. Due to the frequent services, the track deterioration process will be accelerated. Therefore, the exact knowledge of track quality is highly important for every railway company to provide high quality service level.For monitoring of tramway tracks, an unconventional vehicle dynamics measurement setup is developed, which records the data of 3-axes wireless accelerometers mounted on wheel discs of regular in-service tram. In the implementation of prototype system, the bogie side-frame and car body mounted sensors are also fitted to the instrumented vehicle to compare the efficiency of these conventional solutions with the developed arrangement. At the first test period, the instrumented vehicle works as a dedicated inspection vehicle, in order to keep the constant velocity and help to determine the influencing factors on results. Accelerations are processed to obtain the track irregularities, in order to determine whether the track needs to be repaired. Real data come from measurements taken on tram line 49 of the Budapest (Hungary) and they have been validated by comparing results to the actual state of the track provided by a track geometry monitoring trolley and visual inspection. This paper presents the developed methods used for validation and the analysis of preliminary results of the wheel discs mounted accelerometers. This vehicle dynamic measurement system is cheap to implement and no significant modification of the vehicle is required. Therefore, in-service vehicles equipped with this system may serve a good opportunity for monitoring tramway track, while it multiple passes over same track section.

scholarly journals Management of Social Culture Development of Community Village Bobanehena Tourism, North Halmahera District

2020 ◽  
Vol 3 (3) ◽  
pp. 52-62
Author(s):  
Nurlaila Nurlaila
Keyword(s):  
Qualitative Analysis ◽  
Urban Areas ◽  
Cultural Development ◽  
Rural Life ◽  
Actual State ◽  
Social Culture ◽  
Village Community ◽  
Tourist Village ◽  
Culture Development ◽  
Main Attraction

Tourism Village is a place that has certain characteristics and values that can be a special attraction for tourists with an interest in rural life. This shows that the main attraction of a tourist village is the unique life of the villagers and cannot be found in urban areas, for example showing the unique socio-cultural characteristics of the community. The purpose of this research is to find out that there is a socio-cultural development of the Bobanehena village community in advancing the tourism village. By using descriptive qualitative analysis methods can provide an objective picture of the actual state of the object being investigated. The results obtained are that the community's isorganization and perception of tourists are still weak, so that it affects the support and participation of the community in promoting tourism villages. The community does not yet understand the support that must be given in the progress and development of the Bobanehena tourism village.

scholarly journals Effects of strong mining tremors, and assessment of the buildings' resistance to the dynamic impacts

2018 ◽  
Vol 36 ◽  
pp. 01003 ◽  
Author(s):  
Izabela Bryt-Nitarska
Keyword(s):  
Urban Areas ◽  
Land Development ◽  
Actual State ◽  
Dynamic Resistance ◽  
Traditional Structure ◽  
Resistance Assessment ◽  
Dynamic Impacts ◽  
Mining Tremors ◽  
The Impact

A particularly important element in the assessment of the actual state of the threats which is caused by conducting the mining exploitation of seams bumping under the urban areas is to diagnose the condition of the land development after hard shocks. In the buildings, for which the impact of the mining activities, including the tremors, is not taken into account at the stage of design and formulation of the strength and use conditions, conclusions from the structure behaviour under the tremor influence are an essential part of the assessment of the possibility for transferring the further dynamic impacts. The use of conclusions from the in situ research has its role in anticipating the behaviour of the buildings in case of the forecast of the mining tremors effects in the regions of their impacts. These conclusions should also provide ground for the assumptions to the scope of the building prevention necessary to be taken in case of forecasting the tremors with big intensity. Based on the analysis of effects which occurred in the land development after the highenergy mining tremors, the elements of the dynamic resistance assessment for the buildings with traditional structure were discussed.

scholarly journals Small-Scale Hybrid Photovoltaic-Biomass Systems Feasibility Analysis for Higher Education Buildings

2020 ◽  
Vol 12 (21) ◽  
pp. 9300
Author(s):  
David Alfonso-Solar ◽  
Carlos Vargas-Salgado ◽  
Carlos Sánchez-Díaz ◽  
Elías Hurtado-Pérez
Keyword(s):  
Urban Areas ◽  
Real Data ◽  
Experimental Tests ◽  
Economic Feasibility ◽  
Biomass Energy ◽  
Feasibility Analysis ◽  
Small Scale ◽  
Renewable Electricity ◽  
Renewable Sources ◽  
Real Costs

Applications of renewable electricity in cities are mostly limited to photovoltaics, and they need other renewable sources, batteries, and the grid to guarantee reliability. This paper proposes a hybrid system, combining biomass and photovoltaics, to supply electricity to educational buildings. This system is reliable and provides at least 50% of electricity based on renewable sources. Buildings with small (<500 kW) installed power based on renewables, mainly biomass, are usually expensive. Besides, in urban areas, photovoltaic capacity is limited due to roof availability. This paper analyzes different configurations, meeting these constraints to obtain an economically feasible solution based on photovoltaic-biomass modelling of small size hybrid systems. The technology used for biomass energy valorization is a fluidized bed gasification power plant, which has been modelled with real data obtained from experimental tests and previous research projects. Thereby, real costs and electric efficiency are included in the model. The techno-economic feasibility analysis using HOMER software with metered real load curves from an educational building has been modelled. The results of the model show that hybrid renewable systems are very feasible in the scenario of 50% of electricity contribution, however, higher contribution (>70%) implies high electricity costs.

scholarly journals Application of Cross-Hole Tomography for Assessment of Soil Stabilization by Grout Injection

Geosciences ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 399 ◽  
Author(s):  
Mikhail Lebedev ◽  
Kirill Dorokhin
Keyword(s):  
Seismic Tomography ◽  
Urban Areas ◽  
Soil Stabilization ◽  
Geophysical Methods ◽  
Negative Influence ◽  
Actual State ◽  
Existing Buildings ◽  
Practical Applications ◽  
Geotechnical Monitoring ◽  
Urban Conditions

Currently, the spread of megalopolises poses an ever-increasing necessity for underground space development for the purpose of the arrangement of transport communications, underground parking areas, trade areas, etc. The implementation of such projects entails a significant increase in the risk of accidents and damage to existing buildings within construction activity influence areas. The reduction of the risk of accidents during the construction of underground facilities within urban areas may only become possible with the identification of adverse factors negatively influencing existing buildings or a facility under erection and elaboration (to reduce such negative influence). The application of geophysical methods in complex assessments of the actual state of an encompassing mass significantly increases efficiency and the credibility of geotechnical monitoring. The application of seismic tomography significantly increases the resolution capability of surveys. Existing techniques, e.g., seismic tomography, allow for any depths to be investigated at a high resolution, even given constricted urban conditions. This article covers the practical applications of seismic tomography in qualitative assessments of actions and an efficiency evaluation of the injective stabilization of soil.

scholarly journals Multi-Mode Two-Step Floating Catchment Area (2SFCA) Method to Measure the Potential Spatial Accessibility of Healthcare Services

2019 ◽  
Vol 8 (5) ◽  
pp. 236 ◽  
Author(s):  
Jianhua Ni ◽  
Ming Liang ◽  
Yan Lin ◽  
Yanlan Wu ◽  
Chen Wang
Keyword(s):  
Travel Behavior ◽  
Urban Areas ◽  
Catchment Area ◽  
Methodological Approach ◽  
Open Data ◽  
Healthcare Services ◽  
Spatial Accessibility ◽  
Urban Residents ◽  
Transportation Modes ◽  
Multi Mode

While great progress in the development of a methodological approach to measure the accessibility of healthcare services has been made, the exclusion of the complex multi-mode travel behavior of urban residents and a rough calculation of travel costs from the origin to the destination limit its potential for making a detailed assessment, especially in urban areas. In this paper, we aim to describe and implement an enhanced method that enables the integration of multiple transportation modes into a two-step floating catchment area (2SFCA) method to estimate accessibility. We used a travel-mode choice survey, based on distance sections, to determine the complex multi-mode travel behavior of urban residents. Taking Nanjing as a study area, we proposed complete door-to-door approaches to determine every aspect of basic transportation modes. Additionally, we processed open data to implement an accurate computing of the origin-destination (OD) time cost. We applied the enhanced method to estimate the accessibility of residents to hospitals and compared it with three single-mode 2SFCA methods. The results showed that the proposed method effectively identified more accessibility details and provided more realistic accessibility values.

GridPP: the UK grid for particle physics

2009 ◽  
Vol 367 (1897) ◽  
pp. 2447-2457 ◽  
Author(s):  
D. Britton ◽  
A.J. Cass ◽  
P.E.L. Clarke ◽  
J. Coles ◽  
D.J. Colling ◽  
...  
Keyword(s):  
Particle Physics ◽  
Hadron Collider ◽  
Real Data ◽  
Scientific Data ◽  
Prototype System ◽  
Operational Experience ◽  
Start Up ◽  
Physical Infrastructure ◽  
The Uk ◽  
Huge Challenge

The start-up of the Large Hadron Collider (LHC) at CERN, Geneva, presents a huge challenge in processing and analysing the vast amounts of scientific data that will be produced. The architecture of the worldwide grid that will handle 15 PB of particle physics data annually from this machine is based on a hierarchical tiered structure. We describe the development of the UK component (GridPP) of this grid from a prototype system to a full exploitation grid for real data analysis. This includes the physical infrastructure, the deployment of middleware, operational experience and the initial exploitation by the major LHC experiments.

scholarly journals Detection of Underground Anomalies Using Analysis of Ground Penetrating Radar Attribute

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Cuong Van Anh LE ◽  
Thuan Van NGUYEN
Keyword(s):  
Ground Penetrating Radar ◽  
Urban Areas ◽  
Geophysical Methods ◽  
Synthetic Data ◽  
Drainage System ◽  
Real Data ◽  
Building Structures ◽  
Water Drainage ◽  
Diffraction Curve ◽  
Ground Penetrating

Need of specifying underground construction works for supporting further tasks as maintenance, repairing, or setting up new underground structures. For these needs, ground penetrating radar, one of the efficient geophysical methods, can bring high-resolution and quick underground image revealing existence of both natural and artificial anomalies. Its fixed receiver-transmitter antennas setting as constant offset is commonly used in urban areas. Conventionally, hyperbolae events are crucial indicator for scattering objects as kinds of pipes, water drainage system, and concrete building structures as well as sink holes. Calculation of their depths and sizes requires migration analysis with the environment velocity. Migrated sections with different velocity show different chaos degrees of transformation from a hyperbola diffraction curve to its focused area. We have researched diagrams of different Ground Penetrating Radar attributes as energy, entropy, and varimax dependent on two variables, velocity and window zone covering diffraction events from a set of synthetic data and real data, in specifying the environment velocity. We have developed a novel technique for evaluation of the ground velocity and object’s size by combination of the new varimax diagram and the Kirchhoff migration method. The technique can define contribution of diffracted ground penetrating radar waves for building the diagram after removing the reflection contribution. The synthetic datasets consist of different random background noise levels and expressions of different-sized circular and rectangular pipes. The real data is measured for detecting two underground gas pipes in Ba Ria – Vung Tau province, Vietnam.

scholarly journals Semi-automated Extraction of Urban Road Networks by Geometric Analysis of IKONOS Imagery

2021 ◽  
Author(s):  
Haibin Dong
Keyword(s):  
High Resolution ◽  
Satellite Imagery ◽  
Urban Areas ◽  
Road Networks ◽  
Prototype System ◽  
Automated Extraction ◽  
Road Extraction ◽  
Complex Scene ◽  
Urban Road ◽  
High Resolution Satellite Imagery

This thesis addresses the topic of semi-automated extraction of urban road networks from high-resolution satellite imagery. Research on this topic is mainly motivated by the use geographic information systems in transportation (GIS-T), and the need for reliable data acquisition methods and to update GIS-T databases. To this end, 1-m spatial resolution IKONOS imagery provides a new data source to collect the spatial models of citywide road networks. In this thesis, a novel methodology of a semi-automated road extraction using high-resolution satellite imagery over urban areas is developed. The main objective of this research is to extract urban road networks from a single IKONOS image. To detect the road features from a highly complex scene, a multiscale analysis of the optimal image was performed. To extract roads and their networks, the knowledge of road geometry is exploited in an interactive environment. The key advantage of the developed method is the full employment of a human and a computer's abilities for fast and precise road extraction from high-resolution satellite imagery. The results show that the presented method enables reliable road extraction over urban areas. The potential applications exemplified in case studies indicate that the high-resolution satellite imagery offers an efficient and precise source for geographic and transportation databases. Based on this research, the limitations and future work for the prototype system are discussed.

scholarly journals Identifying and Examining Densely Populated Areas with the Influence of Weather Change on Transport

2019 ◽  
Vol 8 (2S11) ◽  
pp. 1050-1052
Keyword(s):  
Web Sites ◽  
Urban Areas ◽  
Real Data ◽  
Weather Conditions ◽  
Motor Vehicles ◽  
The Real ◽  
Government Web Sites ◽  
Data Compilation ◽  
Compilation Process ◽  
Collaborative Filtering Algorithm

In this work we identifying and examining the weather conditions on metropolitan area by using Big data. In this data describe the collection of data very large in size. In some urban regions transporting problem will be arrived in the changing on weather. Now this work understands the various characteristics overall city in urban areas. Some of the urban areas major pollution problem that can arrive in the motor vehicles / industries from metrological data. The data compilation process will be available in government web sites. This website used for making of see and retrieving the previous data and compare with the real data. To estimate the data mining by using Collaborative Filtering algorithm. Now going to this algorithm to estimate the real data and compare next day data.

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