Calculation of the Collapsing Critical Load of a Translating Cam Mechanism and Roller Translating Follower Actuating an Elevator

2021 ◽  
Vol 42 ◽  
pp. 99-106
Author(s):  
Carmen Elisabeta Radu ◽  
Edward Rășchitor ◽  
Iosif Tempea
Keyword(s):  
Critical Load ◽  
Elastic Field ◽  
Parking Lots ◽  
Cam Mechanism ◽  
Euler’S Formula ◽  
Rod Model ◽  
Parking Lot

The above-ground parking lot above Dâmbovița river has stemmed from the need to cover the lack of parking lots in Bucharest. The parking lot may be serviced, in case of emergency, by auxiliary elevators that are operated by mechanisms provided with translating cams and roller translating followers. In this paper, a calculation of the collapsing critical load shall be performed. One shall also analyze here the rod model and the model with several rods of the mechanism provided with a translating cam and roller translating follower. In order for the rods to resist collapsing, one must be found in the elastic field, thus verifying Euler’s formula.

A Preliminary Study on Saving Parking Lot

2011 ◽  
Vol 368-373 ◽  
pp. 3628-3631
Author(s):  
Jun Liu ◽  
Wei Xian Zhang
Keyword(s):  
Sustainable Development ◽  
Large Area ◽  
The Sustainable Development ◽  
Parking Lots ◽  
Wide Range ◽  
Parking Lot ◽  
Preliminary Study

Along with the development of society and the popularity of private cars, more and more parking lots are to be needed. Consequently, large sized parking lots will be built in many cities. But the traditional parking lots were paved by a large area of concrete. So much concrete will be bound to create heat pollution. Meanwhile, a large area of parking lot occupies mass openspace. The existing parking lots lead to a waste of resources. This paper introduces a new term of saving parking lot and presents some key principles that stem from a wide range of contributions. The newfashioned parking lot may also give rise to the sustainable development.

Study on Location Planning of Regional Parking

2012 ◽  
Vol 178-181 ◽  
pp. 1748-1752
Author(s):  
Xin Jie Zhang
Keyword(s):  
Location Planning ◽  
Chinese Cities ◽  
Parking Lots ◽  
Parking Lot ◽  
The City

Parking difficulty is being a highlighted problem in nowadays' cities. As a reality of planning of parking lots in Chinese cities are later than other countries, and also parking lot planning are based on city blueprint and needs of parking places, as well as limit of making parking lot plan, we can make a model on planning and choosing parking lot fields to find the most suitable scheme. Thus it can bring the greatest benefit to the whole area in the city, and also make a reference to planning of the parking lot construction in area.

scholarly journals Energy Trading with Electric Vehicles in Smart Campus Parking Lots

2018 ◽  
Vol 8 (10) ◽  
pp. 1749 ◽  
Author(s):  
Mohamed Ahmed ◽  
Young-Chon Kim
Keyword(s):  
Electric Vehicles ◽  
Market Mechanism ◽  
University Campus ◽  
Energy Trading ◽  
Control Center ◽  
Parking Lots ◽  
Electric Vehicle Charging ◽  
Parking Lot ◽  
Demand Information ◽  
Knapsack Algorithm

Energy trading with electric vehicles provides opportunities to eliminate the high peak demand for electric vehicle charging while providing cost saving and profits for all participants. This work aims to design a framework for local energy trading with electric vehicles in smart parking lots where electric vehicles are able to exchange energy through buying and selling prices. The proposed architecture consists of four layers: the parking energy layer, data acquisition layer, communication network layer, and market layer. Electric vehicles are classified into three different types: seller electric vehicles (SEVs) with an excess of energy in the battery, buyer electric vehicles (BEVs) with lack of energy in the battery, and idle electric vehicles (IEVs). The parking lot control center (PLCC) plays a major role in collecting all available offer/demand information among parked electric vehicles. We propose a market mechanism based on the Knapsack Algorithm (KPA) to maximize the PLCC profit. Two cases are considered: electric vehicles as energy sellers and the PLCC as an energy buyer, and electric vehicles as energy buyers and the PLCC as an energy seller. A realistic parking pattern of a parking lot on a university campus is considered as a case study. Different scenarios are investigated with respect to the number of electric vehicles and amount of energy trading. The proposed market mechanism outperforms the conventional scheme in view of costs and profits.

scholarly journals STUDI PERAMBATAN KESALAHAN SISTEMATIS LUAS LAHAN PARKIR KAMPUS MENGGUNAKAN PENDEKATAN LUAS SEGITIGA SEMBARANG

2019 ◽  
Vol 13 (1) ◽  
pp. 14
Author(s):  
Hendro Supratikno ◽  
David Premana
Keyword(s):  
Systematic Error ◽  
Error Propagation ◽  
Measurement Data ◽  
Systematic Errors ◽  
Random Errors ◽  
Land Area ◽  
Parking Lots ◽  
Parking Lot ◽  
Data Error ◽  
Definition Of

Parking is a condition of not moving a vehicle that is temporary because it was abandoned by the driver. Included in the definition of parking is every vehicle that stops at certain places whether stated by traffic signs or not, and not solely for the benefit of raising and / or lowering people and / or goods.Campus 3 Lumajang State Community Academy has facilities and infrastructure prepared by the Lumajang Regency government. However, the parking lots provided cannot accommodate vehicles optimally because of the ratio of the number of vehicles and the area of the parking area that is not appropriate. This is because the area of the parking lot is not analyzed by data error when measuring.Each measurement data is assumed to have errors both systematic errors, random errors, and large errors (blunders), so that in the measurement of parking lots certainly there are errors. From this the authors intend to conduct research to find out how the propagation of systematic errors and the large systematic errors of the area of campus parking lot 3 Lumajang Community Academy.The methods used in this study include preparing materials and tools, making land sketches, decomposing them, determining distances using theodolite, determining land area equations, and finding systematic error propagation. So that the final goal in this study is to find large systematic errors in the parking area of Campus 3 of the Lumajang State Community Academy

Reflective Parking Lots for Microscale Urban Heat Island Mitigation

2020 ◽  
Vol 2674 (8) ◽  
pp. 663-671
Author(s):  
Sushobhan Sen ◽  
Juan Pablo Ricardo Mendèz-Ruiz Fernandèz ◽  
Jeffery Roesler
Keyword(s):  
Urban Heat Island ◽  
Air Temperature ◽  
Significant Proportion ◽  
Climate Index ◽  
Heat Island ◽  
Universal Thermal Climate Index ◽  
Parking Lots ◽  
Parking Lot ◽  
Thermal Climate ◽  
Urban Heat

Paved surfaces, especially parking lots, occupy a significant proportion of the horizontal surface area in cities. The low albedo of many of these parking lots contribute to the urban heat island (UHI) and affect the local microclimate around them. The albedo of six parking lots in Champaign-Urbana, U.S., was measured using a ground-based albedometer and was found to vary between 0.18 and 0.28, with a statistically significant variation in albedo at different points within each parking lot. The numerical model ENVI-met was then employed to model the microclimate around one of these lots to examine the potential of increasing its albedo to mitigate UHI. The higher albedo decreased the air temperature over the parking lot by about 1°C. Furthermore, the Universal Thermal Climate Index (UTCI), which combines the effects of air temperature, reflected radiation, wind speed, clothing, metabolism, and humidity, demonstrated that increasing the albedo of the parking lot could improve overall pedestrian thermal comfort and even eliminate it during several hours of the day, and thus mitigate the UHI effect.

scholarly journals Estacionamiento Inteligente

2019 ◽  
pp. 34-39
Author(s):  
Gregorio Rodríguez-Miranda ◽  
Rene Santos-Osorio ◽  
Carmen Sarahí Ordaz-Banda ◽  
José Armando Lopez-Rivera
Keyword(s):  
Real Time ◽  
Programming Language ◽  
Web Application ◽  
Serial Communication ◽  
Communication Link ◽  
Web Page ◽  
Parking Lots ◽  
Java Language ◽  
Parking Lot ◽  
The Web

In this work it present the development of a prototype for the control of spaces in a parking lot, which through a web page monitors and displays in real time the available places, for this project it is used: an Arduino Uno card, proximity sensors Lm393, male / female, male / male cables, ESP8266 WIFI module and two LEDs; all these connected to each other by a communication link developed with Arduino code, allowing to transmit and send data in the Arduino serial. An Arduino serial communication link is made with java language code, acting as an intermediary for the insertion of information in the database. The web application was developed with the programming language PHP and HTML and was connected to the database hosted on the MySQL server, using as a Sublime Text code editor. Thus achieving on the web page the monitoring in real time of the available parking places. The results shown by the prototype indicate that it is probably feasible to implement this technology to make the parking lots smart.

scholarly journals A perceptual-behavioural approach with non-parametric experimental coefficient for urban parking business design

2016 ◽  
Vol 37 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Moreno Ferrarese
Keyword(s):  
Urban Areas ◽  
Accurate Determination ◽  
Parking Lots ◽  
Experimental Parameters ◽  
Parking Lot ◽  
Urban Parking ◽  
Integrated Logistics ◽  
The City ◽  
Business Design

Transportation science and integrated logistics of passengers in the cities provide a detailed study of the movements both on entry to the urban areas than within them. Parking lots are, very often, places of exchange between the motorized and the pedestrian or cycling mode, or between individual and collective motorized modes. As the modern urban civilization is known by its impetuous car parking expansion it becomes essential to design the parking lots bearing in mind the needs of those who will really use them and not referring to the political lobbies in the city administration. The study of parking lot in terms of business and financial design, planning and management after the construction needs is a more accurate determination of the experimental parameters, which enable choice of the model to minimize the uncertainty of the data that will define the revenues according to the Project Financing procedures.

scholarly journals Smart parking :an efficient approach to city’s smart management and air pollution reduction

2019 ◽  
Author(s):  
Seyed Jalalaldin Faraji ◽  
Marjan Jafari Nozar
Keyword(s):  
Air Pollution ◽  
Field Studies ◽  
Urban Management ◽  
Related Disorder ◽  
Parking Lots ◽  
Parking Lot ◽  
Smart Parking ◽  
The Many ◽  
The One ◽  
Urban Parking

Introduction: Due to increasing the population of cities and the physical-spatial expansion of the cities, vehicles are being used progressively, which has caused many problems for the cities including traffic increase, chaos in finding urban parking lots, increase of environmental pollution, decrease of citizens’ satisfaction, and so on. Among the many urban problems, parking lot is one of the issues that has been heavily debated in recent years. The lack of sufficient number of parking lots, on the one hand, and the related disorder and management problems, on the other hand, have led to a range of managerial and environmental problems. Meanwhile, one of the paradigms that has focused on this issue in recent years is smart city paradigm, which has offered the smart parking. This paradigm believes that parking, as a part of the city’s space, can be smart and can help urban management.   Materials and methods: This is an applied research in terms of purpose and a descriptive-analytical research in terms of nature. The required data were collected using documentary and field studies and SWOT method was used to analyze the data.   Results: This study was conducted to evaluate and investigate the role of smart parking in increasing the efficiency of urban management and its im-pact on reducing air pollution.   Conclusion: Finally, the conclusion of the research have led to key strategies for achieving the research goal.

scholarly journals Design And Development Of Smart Parking Management System

10.31645/07 ◽  
2020 ◽  
Author(s):  
Syed Saad Azhar ◽  
◽  
Arshad Arshad ◽  
Abdul Rehman
Keyword(s):  
Carbon Emissions ◽  
Mobile Application ◽  
Parking Lots ◽  
Modern Age ◽  
Greenhouse Emissions ◽  
Innovative Solutions ◽  
Parking Lot ◽  
Parking Management ◽  
Smart Parking ◽  
Increasing Demand

The parking systems in the modern age are under tremendous stress as the number of vehicles on the roads are increasing every year. Due to this increase, the current parking lots do not suffice which leads to people driving for parking spaces thus wasting valuable time and adding to the greenhouse emissions. Therefore, new efficient and innovative solutions need to be developed which meets the ever- increasing demand for parking spaces and be as environmentally friendly as possible. The solution devised in this project is an enhancement of the current parking system with an integrated mobile application which allow drivers to remotely monitor parking lots, make reservation for a spot prior to visiting the parking lot and make in app payments for the parking services. This reduces the time spent in looking for parking spots as well as reduces the unnecessary carbon emissions while offering a practical and seamless parking experience to the users.

scholarly journals Design and Implementation of the Optimization Algorithm in the Layout of Parking Lot Guidance

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Zhendong Liu ◽  
Dongyan Li ◽  
Yurong Yang ◽  
Xi Chen ◽  
Xinrong Lv ◽  
...  
Keyword(s):  
Optimization Algorithm ◽  
Guidance System ◽  
Parking Space ◽  
Dijkstra Algorithm ◽  
Parking Lots ◽  
Design And Implementation ◽  
Parking Lot ◽  
Big Cities

The information guidance system for parking spaces in large- and medium-sized parking lots is not efficient at present. It tends to be difficult to find an empty parking space in parking lots in big cities. One of the problems is the large amount of calculation in the traditional Dijkstra algorithm. In this paper, an improved Dijkstra algorithm is presented and optimized to find the best parking path with the purpose of looking for the nearest free parking space based on the layout model in parking lot parking guidance. The experiments show that the improved Dijkstra algorithm can find the optimal parking space and the optimal parking path and improve the parking efficiency.

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