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A Review of Recent Spatial Accessibility Studies That Benefitted from Advanced Geospatial Information: Multimodal Transportation and Spatiotemporal Disaggregation

Jinwoo Park, Daniel W. Goldberg
2021 ISPRS International Journal of Geo-Information  
Based on the critical review, we propose two research agendas: improving the accuracy of measurements with dynamic variable implementation and furnishing policy implications granted from the enhanced accuracy  ...  These agendas particularly call for the action of geographers on the full implementation of dynamic variables and the strong linkage between accessibility and policymaking.  ...  at location j; S j is the weight of supply facility at location j; D k is the demand (e.g., population) in location k; d kj or d ij is the travel cost from location k (or i) to location j; f () is an  ... 
doi:10.3390/ijgi10080532 fatcat:3gfoioxpebgvtmbocetzllo4q4

Bacterial community structures are unique and resilient in full-scale bioenergy systems

J. J. Werner, D. Knights, M. L. Garcia, N. B. Scalfone, S. Smith, K. Yarasheski, T. A. Cummings, A. R. Beers, R. Knight, L. T. Angenent
2011 Proceedings of the National Academy of Sciences of the United States of America  
correlated with community evenness (at any given time) and variability in phylogenetic structure (over time), respectively.  ...  Finally, (iii) the dynamics of populations over time allow for the community to adjust following perturbations and disturbances, providing the system with access to the total functional diversity and environmental  ...  We thank wastewater treatment operators at Anheuser-Busch, Inbev for supplying samples and data records. We thank Ruth E. Ley and anonymous reviewers for insightful comments.  ... 
doi:10.1073/pnas.1015676108 pmid:21368115 pmcid:PMC3053989 fatcat:4y67nyjsqrgn7jd6pmyzzrkj3y

Hybrid Genetic Algorithm and Variable Neighborhood Search for Dynamic Facility Layout Problem

Md Sanuwar Uddin
2015 Open Journal of Optimization  
This paper presents a novel hybrid metaheuristic GA-VNS matching genetic algorithm (GA) and variable neighborhood search (VNS) to the dynamic facility layout problem (DFLP).  ...  The DFLP is a well-known NP hard problem which aims at assigning a set of facilities to a set of locations over a time planning horizon so that the total cost including material handling cost and re-arrangement  ...  The assumptions of DFLP are defined as follows: the flow between facilities is dynamic and deterministic; facilities and locations are all equal size; the distances between facilities are predetermined  ... 
doi:10.4236/ojop.2015.44015 fatcat:vcpf2dmlcffvzdh3vsic6clkxu

Dynamic capacitated maximal covering location problem by considering dynamic capacity

Jafar Bagherinejad, Mahnaz Shoeib
2018 International Journal of Industrial Engineering Computations  
In this paper, capacitated MCLP and dynamic MCLP are integrated with each other and dynamic capacity constraint is considered for facilities.  ...  In explicitly dynamic models, in order to respond to changes in parameters over time, facilities are closed and opened in pre-specified times and locations.  ...  Space and time issues have been taken into account in static facility location problems and dynamic facility location problems respectively (Boloori Arabani & Zanjirani Farahani, 2012) .  ... 
doi:10.5267/j.ijiec.2017.5.004 fatcat:3w6f7lbo2vcvnevxafiz64scf4

Revealing the Correlation between Population Density and the Spatial Distribution of Urban Public Service Facilities with Mobile Phone Data

Yi Shi, Junyan Yang, Peiyu Shen
2020 ISPRS International Journal of Geo-Information  
The results show a correlation between service facilities' locations and urban population density at different times of the day.  ...  density and public service facilities' locations in downtown Shanghai and its variation laws.  ...  The results also reveal a temporal heterogeneity between dynamic population density and public service facilities.  ... 
doi:10.3390/ijgi9010038 fatcat:z45ixwyb2nhszlb4ylm6323l54

An Improved Genetic Algorithm Based Robust Approach for Stochastic Dynamic Facility Layout Problem

Yunfang Peng, Tian Zeng, Lingzhi Fan, Yajuan Han, Beixin Xia
2018 Discrete Dynamics in Nature and Society  
This paper deals with stochastic dynamic facility layout problem under demand uncertainty in terms of material flow between facilities.  ...  As a solution procedure for the proposed model, an improved adaptive genetic algorithm with population initialization strategy is developed to reduce the search space and improve the solving efficiency  ...  Acknowledgments This work was supported by the National Natural Science Foundation of China (Grants no. 51405283, no. 71401098, and no. 71572104).  ... 
doi:10.1155/2018/1529058 fatcat:ipcs27iqrrc6ld5uulcthplrma

Influence of Places of Resident Activities on Spatial Distribution of Drug-Related Crimes

Yimeng Liu, Weihong Li, Guoqing Liu, Xiaorui Yang, Yunjian Guo, Kewen Zhang
2021 Social Sciences  
However, the dynamic visitor flow rate has rarely been taken into consideration when analyzing the cause of drug-related crimes, with most studies only using static population distribution data.  ...  Drug-related crimes on different streets are associated with different factors those on commercial-oriented streets are mainly distributed in areas with dense restaurant services and recreational facilities  ...  with dense transportation facilities and cyber cafes as well as a high dynamic visitor flow rate.  ... 
doi:10.11648/j.ss.20211003.14 fatcat:qwqmfwiyrne43lxoppi5w4kjdy

Dynamic System Development: An Approach for Land Re-adjustment in Managing Slum Areas

Arief R. Wismansyah, Mesi Shinta Dewi, Rahmi ., Taufik Syahzaeni, Widi Hastuti
2019 KnE Social Sciences  
The dynamic model shows a causal link that population has generated the most variable loops, which then contribute to housing and utility needs.  ...  There are major dynamic loops, namely: utility, population and housing causal loops.  ...  Dynamic system analysis is chosen because it can explain the relationship between the various complex variables that exist in the real world, although with limits and simplifications in certain conditions  ... 
doi:10.18502/kss.v3i21.4960 fatcat:crdbpson3rbzxo32pgcurbapty

A two-stage dynamic model on allocation of construction facilities with genetic algorithm

K.W. Chau
2004 Automation in Construction  
By their very nature, activities within the construction site are generally highly dynamic and complex.  ...  In this paper, a two-stage dynamic model is developed to assist construction planners to formulate the optimal strategy for establishing potential intermediate transfer centers for site-level facilities  ...  Drezner and Wesolowsky [4] proposed a solution algorithm for the facility location problem among a given set of demand points with time-dependent weights associated with each demand point.  ... 
doi:10.1016/j.autcon.2004.02.001 fatcat:nsktt2lu5zfefi2eo3cauxdobe

A two-stage dynamic model on allocation of construction facilities with genetic algorithm

K CHAU
2004 Automation in Construction  
By their very nature, activities within the construction site are generally highly dynamic and complex.  ...  In this paper, a two-stage dynamic model is developed to assist construction planners to formulate the optimal strategy for establishing potential intermediate transfer centers for site-level facilities  ...  Drezner and Wesolowsky [4] proposed a solution algorithm for the facility location problem among a given set of demand points with time-dependent weights associated with each demand point.  ... 
doi:10.1016/s0926-5805(04)00007-x fatcat:etlsjzl3qbherg64ufzy5w3juu

A Development of Dynamic Road Network Planning Model Considering Step-by-step Construction of Links and Facility on Nodes

Toshinari Kozasa, Makoto Tsukai, Akimasa Fujiwara
2012 Procedia - Social and Behavioral Sciences  
This study proposes an integrated project evaluation model with improvement of links and facility-location on nodes.  ...  Moreover, some of facilities supposed to be trip destinations would be added or removed from the nodes during the planning term, which would influence on accessibilities of each node.  ...  Arabani and Farahani (2012) summarized recent developments of facility location models employing the dynamic characteristics of design variables.  ... 
doi:10.1016/j.sbspro.2012.04.112 fatcat:csz3zza73jac5cuxcnghcadxra

A hybrid CS-SA intelligent approach to solve uncertain dynamic facility layout problems considering dependency of demands

Ghorbanali Moslemipour
2017 Journal of Industrial Engineering International  
This paper aims at proposing a quadratic assignment-based mathematical model to deal with the stochastic dynamic facility layout problem.  ...  In this problem, product demands are assumed to be dependent normally distributed random variables with known probability density function and covariance that change from period to period at random.  ...  problem (SSFLP) with stochastic flow of materials over a single time period, and (4) stochastic dynamic facility layout problem (SDFLP) where product demands are random variables so that their parameters  ... 
doi:10.1007/s40092-017-0222-x fatcat:mnkijbij4fhx7dike7jnsi2etq

Modeling health care facility location for moving population groups

Malick Ndiaye, Hesham Alfares
2008 Computers & Operations Research  
In this paper, the population groups are assumed to occupy different locations according to the time of the year, i.e., winter and summer.  ...  Locating public services for nomadic population groups is a difficult challenge as the locations of the targeted populations seasonally change.  ...  Acknowledgments The authors gratefully acknowledge the support of King Fahd University of Petroleum and Minerals for this research effort.  ... 
doi:10.1016/j.cor.2006.09.025 fatcat:6x67xdwatzdmllcoii4bainuoq

Developing and solving two-echelon inventory system for perishable items in a supply chain: case study (Mashhad Behrouz Company)

Mirbahador Gholi AriaNezhad, Ahmad Makuie, Saeed Khayatmoghadam
2013 Journal of Industrial Engineering International  
This paper aims at proposing a quadratic assignment-based mathematical model to deal with the stochastic dynamic facility layout problem.  ...  In this problem, product demands are assumed to be dependent normally distributed random variables with known probability density function and covariance that change from period to period at random.  ...  problem (SSFLP) with stochastic flow of materials over a single time period, and (4) stochastic dynamic facility layout problem (SDFLP) where product demands are random variables so that their parameters  ... 
doi:10.1186/2251-712x-9-39 fatcat:r6ocne5fwbegxmd7wsntw6t7am

Data driven approach for high resolution population distribution and dynamics models

Budhendra L. Bhaduri, Edward A. Bright, Amy N. Rose, Cheng Liu, Marie L. Urban, Robert N. Stewart
2014 Proceedings of the Winter Simulation Conference 2014  
This paper describes ongoing development of high-resolution population distribution and dynamics models, at Oak Ridge National Laboratory, through spatial data integration and modeling with behavioral  ...  Commonly available population data from Census is constrained both in space and time and does not capture population dynamics as functions of space and time.  ...  Federal Government and of UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy.  ... 
doi:10.1109/wsc.2014.7019945 dblp:conf/wsc/BhaduriBRLUS14 fatcat:jloaxrk4qbawrl3yy2j2gn52du
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