The change of Cr and Mn concentrations in selected plants in Samsun city center depending on traffic density

Penentuan Pusat-pusat Kegiatan Baru sebagai Alternatif untuk Mengurangi Kemacetan Kota Bogor

Journal of Regional and Rural Development Planning ◽

10.29244/jp2wd.2017.1.3.287-297 ◽

2018 ◽

Vol 1 (3) ◽

pp. 287

Author(s):

Dewi Annisa Rizki ◽

Ernan Rustiadi ◽

Soekmana Soma

Keyword(s):

Gravity Model ◽

Descriptive Analysis ◽

Traffic Density ◽

City Center ◽

Suburban Areas ◽

The North ◽

Production Area ◽

The City ◽

Gravitation Model ◽

Spatial Plan

Bogor city is facing very serious congestion problems. Rearrangement of the spatial structure of the urban growth centers could improve the city's transportation system. This study aims to map the density of traffic, analyze the hierarchy of growth centers, analyze the spatial interactions and formulate alternative arrangement of the centers of the new activities. The study was conducted through descriptive analysis, Schallogram method, the Spatial Gravitation Model and TOPSIS. Schallogram analysis is used to analyze the hierarchy level of service. The Gravity Model is used to analyze the interaction between the regions. TOPSIS analysis is used to identify priority areas and new growth centers. This study analyzed data on the volume of vehicles, facilities area, population, road length, road network maps, and spatial plan (RTRW). The areas in the city center had the highest traffic density and the highest hierarchical. While suburban areas tend to have the lowest hierarchy. Based on the results of gravity model analysis, the areas with the highest attraction located in the city center and extends along the corridor to the north and the south. While the production area spread around the suburbs. Based on the analysis TOPSIS recommend new growth centers, namely Margajaya, Cimahpar, and Bojongkerta.

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The Marginal Cost of Traffic Congestion and Road Pricing: Evidence from a Natural Experiment in Beijing

American Economic Journal Economic Policy ◽

10.1257/pol.20170195 ◽

2020 ◽

Vol 12 (1) ◽

pp. 418-453 ◽

Cited By ~ 2

Author(s):

Jun Yang ◽

Avralt-Od Purevjav ◽

Shanjun Li

Keyword(s):

Traffic Congestion ◽

Natural Experiment ◽

Road Pricing ◽

Traffic Density ◽

Traffic Data ◽

City Center ◽

Urban Centers ◽

Restriction Policy ◽

The Relationship ◽

The City

Severe traffic congestion is ubiquitous in large urban centers. This paper provides the first causal estimate of the relationship between traffic density and speed and optimal congestion charges using real-time fine-scale traffic data in Beijing. The identification relies on plausibly exogenous variation in traffic density induced by Beijing’s driving restriction policy. Optimal congestion charges range from 5 to 39 cents per km depending on time and location. Road pricing would increase traffic speed by 11 percent within the city center and lead to an annual welfare gain of ¥1.5 billion from reduced congestion and revenue of ¥10.5 billion. (JEL H23, O18, P25, R41, R48)

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Bazı Peyzaj Bitkilerinde Krom Konsantrasyonunun Tür, Organ ve Trafik Yoğunluğuna Bağlı Değişimi

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v9i3.595-600.4113 ◽

2021 ◽

Vol 9 (3) ◽

pp. 595-600

Author(s):

Hakan Şevik

Keyword(s):

Heavy Metals ◽

Air Pollution ◽

Traffic Density ◽

City Center ◽

Industrial Activities ◽

Heavy Metal Concentrations ◽

Landscape Studies ◽

Low Concentrations ◽

Biodegradation Process ◽

Tilia Tomentosa

Today, air pollution is one of the most important problems that threaten human and environmental health. Although there are many components of air pollution, heavy metals are of particular importance. The reason for this is that some of the heavy metals are pure toxic at low concentrations, many heavy metals that are nutrients for living beings are harmful at high costs in bile, live biodegradation process, they are not easily degraded in nature and are used in addition to them. For this reason, it is of great importance to monitor the heavy metal concentrations in the air, especially in risky conditions such as traffic processing, industrial activities and populated areas. In this study, it is grown in Samsun city center and frequently used in landscape studies; Tilia tomentosa, Aesculus hippocastanum, Ligustrum vulgare and Catalpa bignoides species have been tried to determine the changes of Cr concentrations in individuals grown in areas where traffic is heavy, less dense and almost none. Within the scope of the study, leaf, bark and wood samples were collected from the plants, and washing operations were also carried out on the bark and leaves. As a result of the study, Cr concentrations in the species subject to the study changed significantly on the basis of species, organs and traffic density.

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Construction of the Russian "master narrative" in the historic spaces of Moscow's city center

PsycEXTRA Dataset ◽

10.1037/e620412011-150 ◽

2010 ◽

Author(s):

David A. Weber

Keyword(s):

Master Narrative ◽

City Center

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Optimal broadcast scheduling method for VANETs: An adaptive discrete firefly approach

Journal of Intelligent & Fuzzy Systems ◽

10.3233/jifs-189134 ◽

2020 ◽

Vol 39 (6) ◽

pp. 8125-8137

Author(s):

Jackson J Christy ◽

D Rekha ◽

V Vijayakumar ◽

Glaucio H.S. Carvalho

Keyword(s):

Intelligent Transportation System ◽

Search Algorithm ◽

Mac Protocol ◽

High Mobility ◽

Optimal Solution ◽

Cuckoo Search ◽

Cuckoo Search Algorithm ◽

Traffic Density ◽

Scheduling Problem ◽

Broadcast Scheduling

Vehicular Adhoc Networks (VANET) are thought-about as a mainstay in Intelligent Transportation System (ITS). For an efficient vehicular Adhoc network, broadcasting i.e. sharing a safety related message across all vehicles and infrastructure throughout the network is pivotal. Hence an efficient TDMA based MAC protocol for VANETs would serve the purpose of broadcast scheduling. At the same time, high mobility, influential traffic density, and an altering network topology makes it strenuous to form an efficient broadcast schedule. In this paper an evolutionary approach has been chosen to solve the broadcast scheduling problem in VANETs. The paper focusses on identifying an optimal solution with minimal TDMA frames and increased transmissions. These two parameters are the converging factor for the evolutionary algorithms employed. The proposed approach uses an Adaptive Discrete Firefly Algorithm (ADFA) for solving the Broadcast Scheduling Problem (BSP). The results are compared with traditional evolutionary approaches such as Genetic Algorithm and Cuckoo search algorithm. A mathematical analysis to find the probability of achieving a time slot is done using Markov Chain analysis.

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Design and Simulation of Smart Control System for Internet Traffic Distribution on Servers by Using Fuzzy Logic System

Al-Kitab Journal for Pure Sciences ◽

10.32441/kjps.v2i1.138 ◽

2018 ◽

Vol 2 (1) ◽

Author(s):

Raid Daoud ◽

Yaareb Al-Khashab

Keyword(s):

Fuzzy Logic ◽

Control System ◽

Input Parameter ◽

Traffic Density ◽

The Internet ◽

Linguistic Variables ◽

Internet Service ◽

Traffic Distribution ◽

Smart Control ◽

High Level

The internet service is provided by a given number of servers located in the main node of internet service provider (ISP). In some cases; the overload problem was occurred because a demand on a given website goes to very high level. In this paper, a fuzzy logic control (FLC) has proposed to distribute the load into the internet servers by a smart and flexible manner. Three effected parameters are tacked into account as input for FLC: link capacity which has three linguistic variables with Gaussian membership function (MF): (small, medium and big), traffic density with linguistic variables (low, normal and high) and channel latency with linguistic variables (empty, half and full); with one output which is the share server status (single, simple and share). The proposed work has been simulated by using MATLAB 2016a, by building a structure in the Fuzzy toolbox. The results were fixed by two manners: the graphical curves and the numerical tables, the surface response was smoothly changed and translates the well-fixed control system. The numerical results of the control system satisfy the idea of the smart rout for the incoming traffics from the users to internet servers. So, the response of the proposed system for the share of server ratio is 0.122, when the input parameter in the smallest levels; and the ratio is 0.879 when the input parameters are in highest level. The smart work and flexible use for the FLC is the main success solution for most of today systems control.

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