This paper focuses on performance assessment of a freight network with stochastic capacities by using reliability analysis, in which node denotes supplier, transfer center, distribution or market, while an arc logistics service provider offering the traffic for pair nodes. Due to some uncertainties real environment (for example, proportion vehicles owned may be reserved other customers), available capacity along each is stochastic. Thus, that at least d units commodity demand can...

The driver's driving performance may affect the operation of transportation system in terms safety, mobility, and air quality. Particularly, a complicated traffic situation such as local community area with multiple school zones other public activity facilities, becomes critical to safety road users within neighborhood. Many studies have demonstrated that could be altered by advance warning messages forms either image or sound. With advent innovative wireless communication technologies,...

Due to sun glare disturbances, drivers encounter fatal threats on roadways, particularly at signalized intersections. Many studies have attempted develop applicable solutions, such as avoiding positions, applying road geometric re-directions, and wearing anti-glare glasses. None of these strategies fully solved the problem. As one "Connected Vehicle" practices proposed by U.S. Department Transportation, advanced warning messages (AWMs) are capable providing wireless information about traffic...

Field observations illustrated that, right-turn vehicles stopped at various positions when proceeding within the lanes, while some of them trespassed on crosswalks with multiple stops. In this case, pedestrians and bikes (ped/bike) are encountered unsmooth hazardous crossings encroaching their lanes. Meanwhile, also causes conflicts between through crossing street. To better protect ped/bike vehicles, paper proposes a concept “right-turn vehicle box” (RTVB) as supplemental treatment Sight...

With rapid infrastructure construction and urban redevelopment, there has been an increasing demand for utilisation of underground spaces, which gives rise to a large number excavation projects. In the past decade, series new trends have emerged on engineering in Shanghai, China. As available ground resources congested areas are scarce, excavations become much larger deeper than before. More be carried out close proximity existing buildings, tunnels, utilities other structures. Any severe...

The vehicle color is considered to be a significant factor affecting driver visibility. primary objective of this study therefore determine the impact black-and-white striped vehicles (BWVs) on visibility through simulation-based experiments. In these experiments, subjects were asked perform front and rear target identification tasks under daylight twilight conditions. Then, 2 (lighting conditions) × (vehicle size) 5 color) analysis variance was conducted for each task. Under scenario, main...

The wave speed of acoustic emission in the medium is uncertain, which influenced by source characteristics and relative position between sensors. Due to this difference, results TDOA location method determination advance are very discrete. As liner ,the more farther distance two sensor are, serious discrete error are. Any sensors, a line can be obtained setting as horizontal coordinate vertical coordinate. different sensors real events. This has lower computational complexity, overcome...

When the concrete is in process of load, curve amplitude - frequency shows significant characteristic exponential. As load increases, acoustic emission signals gradually become complete, more obvious features this exponential function. Using least squares method, we can get an empirical function expression by fitting data.Function has different regression coefficients stages, and changing with also presents certain rules, which a good indication to qualitative structural damage.

A large amount of processing data was accumulated within plant processing. And its necessary to use this for as well administration. In article the mining technology and utilization were discussed, according research results, fitting relationship is:Cu recovery (%)= -1.1221*lime dosage (Kg/t)+92.6, lime alteration effect on copper are 1.41% absolutely 1.66% relatively. The concentrate grade 0.0554*lime (Kg/t)+19.271, 0.070% 0.36% It can be concluded that has a great recovery, is relative...

Abstract The objective of this study was to quantitatively investigate some characteristics the smoke transportation in multi‐floor buildings. Eight experiments were conducted for worst scenario. effects an open window burning room on are also analyzed. time‐dependent densities at 39 locations a half‐scale building with atrium measured through digital detector system. results indicate that chimney effect plays important role buildings atriums. For window, suggest most increase earlier when...

Beijing South Railway Station is an integrated system, the evaluation of which should involve not only inner transfer condition, but also connection in road network. To make a more comprehensive and scientific station, we select various criteria, including static indicators, dynamic indicators. Then build three-level hierarchy index structure to evaluate performance outside Station. For part, apply Extension Theory for evaluation. use VISSIM simulate condition station

Most of the traditional traffic accidents are caused by human factors. Among them, overspeed driving is one main causes serious accidents. Based on analysis CIDAS accident data, this paper counted speed limit road section when speeding occurred, and elaborated test scenarios methods information function warning assist system in 2021 version C-NCAP. At same time, limitations analyzed, technical route solution current for passenger cars introduced. Finally, three representative models selected...

Through the physical experiment simulation of lineaments on surface, paper reveals mechanism and genesis indirect display caused by buried geological anomaly. A view that RS image can show character anomaly is put forward in paper. In order to prove view, a model which includes basement cover established. Firstly, it makes an analysis expounds condition for simulation. Secondly, describes process its results. The mainly designed measure deformation cover, two stages. During first stage,...