Results 1 to 10 of about 861,292 (341)
Asymptotically optimal idling in the GI/GI/N+GI queue [PDF]
Operations Research Letters, 2022 We formulate a control problem for a GI/GI/N+GI queue, whose objective is to trade off the long-run average operational costs (i.e., abandonment costs and holding costs) with server utilization costs. To solve the control problem, we consider an asymptotic regime in which the arrival rate and the number of servers grow large.
Yueyang Zhong +2 more
openaire +2 more sources
Statistical analysis and predicting spatio-temporal variations of urban heat islands using remote sensing data [PDF]
علوم محیطی, 2023 Introduction: The urban heat island (UHI) as a climatic effect of urbanization can negatively impact the flora and fauna involved in urban and suburban ecosystems, the presence of pollutants, air quality, energy and water consumption, as well as human ...
Keyvan Ezimand +3 more
doaj +1 more source
Open Engineering, 2021 National Implementation Plans (NIP) in regard hydrogenation motor transport are in place in European Union (EU) countries, e.g. Germany, France or Belgium, Denmark, Netherlands. Motor transport hydrogenization plans exist in the Japan and USA.
Gis Wojciech, Gis Maciej
doaj +1 more source
Exhaust emissions of buses LNG and Diesel in RDE tests
Open Engineering, 2021 The article compares the exhaust emissions in road conditions of city buses: LNG and Diesel. Both buses met the Euro VI exhaust emission norm. The current strong drive to diversify fuels in Poland and the creation of a large gas port in Świnoujście for ...
Gis Maciej, Pielecha Jacek, Gis Wojciech
doaj +1 more source
Alternative Exhaust Emission Factors from Vehicles in On-Road Driving Tests
Energies, 2021 On-road driving tests are performed to determine the emission of harmful exhaust compounds from vehicles. These primarily include carbon dioxide, nitrogen oxides, and particle number.
Wojciech Gis +3 more
doaj +1 more source
The use of the mild hybrid system in vehicles with regard to exhaust emissions and their environmental impact [PDF]
Archives of Transport, 2020 Pollution of the environment is a global phenomenon. The lack of specific actions to reduce environmental pollution can lead to an increase in the average temperature of the Earth's air and to global consequences.
Jacek Pielecha, Maciej Gis
doaj +1 more source
SPATIAL ACCESSIBILITY OF URBAN PARKS IN TANGIER CITY, MOROCCO [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 Recently, Urban Parks presents an essential role of humanity, because they provide a many of benefits that support our physical and social health. Therefore, UP (Urban Parks) are crucial part of whole urban environment. In this paper, we present the role
M. Maliari +4 more
doaj +1 more source
Particle Number Emission from Vehicles of Various Drives in the RDE Tests
Energies, 2022 In this study, the authors assessed the road emissions of several passenger cars using specialised instrumentation, of the PEMS type, to measure particle number emissions in real traffic conditions.
Jacek Pielecha +3 more
doaj +1 more source
A Modular System Based on U-Net for Automatic Building Extraction from very high-resolution satellite images [PDF]
E3S Web of Conferences, 2022 Recently, convolutional neural networks have grown in popularity in a variety of fields, such as computer vision and audio and text processing. This importance is due to the performance of this type of neural network in the state of the art, and in a ...
El Asri Smail Ait +3 more
doaj +1 more source