Relevant bibliographies by topics / HFVRP

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'HFVRP'

Author: Grafiati
Published: 28 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "HFVRP"

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Yeh, Wei-Chang, and Shi-Yi Tan. "Simplified Swarm Optimization for the Heterogeneous Fleet Vehicle Routing Problem with Time-Varying Continuous Speed Function." Electronics 10, no. 15 (July 24, 2021): 1775. http://dx.doi.org/10.3390/electronics10151775.

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Transportation planning has been established as a key topic in the literature and practices of social production, especially in urban contexts. To consider traffic environment factors, more and more researchers are taking time-varying factors into account when scheduling their logistic activities. The time-dependent vehicle routing problem (TDVRP) is an extension of the classical Vehicle Routing Problem with Time Windows (VRPTW) by determining a set of optimal routes serving a set of customers within specific time windows. However, few of them use the continuous speed function to express the time-varying. In practice, many vehicle routing problems are addressed by a fleet of heterogeneous vehicles with different capacities and travel costs including fix costs and variable costs. In this study, a Heterogeneous Fleet Vehicle Routing Problem (HFPRP) Time-Varying Continuous Speed Function has been proposed. The objective is to minimize distribution costs, which contained fixed costs of acquiring and variable fuel costs. To address this problem, our research developed a mathematical model and proposed a Simplified Swarm Optimization (SSO) heuristic for HFVRP with Time-Varying Continuous Speed Function.
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Lukman, Ismanitami, Rosmalina Hanafi, and Syarifuddin M. Parenreng. "Optimasi Biaya Distribusi pada HFVRP Menggunakan Algoritma Particle Swarm Optimization." Jurnal Optimasi Sistem Industri 18, no. 2 (November 1, 2019): 164. http://dx.doi.org/10.25077/josi.v18.n2.p164-175.2019.

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Lee, Keyju, Junjae Chae, Bomi Song, and Donghyun Choi. "A Model for Sustainable Courier Services: Vehicle Routing with Exclusive Lanes." Sustainability 12, no. 3 (February 3, 2020): 1077. http://dx.doi.org/10.3390/su12031077.

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In Southeast Asian cities, it is common for logistic companies to operate a heterogeneous fleet of delivery vehicles with motorcycles being the preferred vehicle to handle the final phase of delivery. In such scenarios, heterogeneous fleet vehicle routing problem (HFVRP) is generally applied to plan an optimal delivery. However, in many downtown cores of large and rapidly developing Southeast Asian cities, HFVRP is neither viable nor reliable because of road usage restrictions. The purpose of this article is to develop and test a different approach that accurately takes these restrictions into account and provides viable and more sustainable results. Restrictions in this paper refer to situations of urban areas in Vietnam where (i) certain vehicle types are prohibited in specified areas or where narrow alleyways limit the utilization of vehicles that exceed the road capacity and (ii) certain roads are exclusive to certain vehicle types. In networks, limited access and exclusive lanes are represented as links, or arcs, exclusive to one or another. Taking these limitations into consideration, we have developed a unique model, which we have termed Vehicle Routing Problem with Exclusive Links (VRP-EL). The model was validated and tested for its performance on scenarios with varying ratios of exclusive links. Scenarios up to 500 customers were tested on a meta-heuristic algorithm, simulated annealing. VRP-EL produces realistic outcomes. Limiting certain links to be selected according to vehicle types increases overall travel distance. However, this increase outweighs the cost of re-planning and rerouting had they not been constrained initially. The reduction in traveling distance leads to fossil fuel reduction for the overall system. The estimation of reduced carbon emissions through applying the proposed model is presented. Considering the severe traffic congestion and carbon emissions caused by motorcycles in Vietnam, the proposed model leads to a sustainable road environment.
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Paramestha, D. L., and B. Santosa. "Developing cross entropy genetic algorithm for solving Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem (2L-HFVRP)." IOP Conference Series: Materials Science and Engineering 337 (April 2018): 012001. http://dx.doi.org/10.1088/1757-899x/337/1/012001.

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Domínguez Rivero, Oscar L., Angel A. Juan Pérez, Ignacio A. de la Nuez Pestana, and Djamila Ouelhadj. "An ILS-biased randomization algorithm for the two-dimensional loading HFVRP with sequential loading and items rotation." Journal of the Operational Research Society 67, no. 1 (January 2016): 37–53. http://dx.doi.org/10.1057/jors.2015.48.

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Kaewman, Sasitorn, and Raknoi Akararungruangkul. "Heuristics Algorithms for a Heterogeneous Fleets VRP with Excessive Demand for the Vehicle at the Pickup Points, and the Longest Traveling Time Constraint: A Case Study in Prasitsuksa Songkloe, Ubonratchathani Thailand." Logistics 2, no. 3 (August 28, 2018): 15. http://dx.doi.org/10.3390/logistics2030015.

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This paper presents a methodology to solve a special case of the vehicle routing problem (VRP) called the heterogeneous fleets VRP with excessive demand of the vehicle at the pickup points, and the longest time constraint (HFVRP-EXDE-LTC). We developed two metaheuristics—a differential evolution (DE) algorithm and an adaptive large neighborhood search (ALNS)—to solve the problem. These two proposed methods have been designed to effectively solve a special case of VRP. From the computational results, we can see that the proposed heuristics outperformed the best practices that are currently in use. The DE yielded a 9.78% lower cost than that of the current practice (757,250 baht per year), while ALNS generated a 10.89% (906,750 baht per year) lower cost than that of current practice. Comparing the proposed heuristics, ALNS achieved a 1.01% lower cost than that of DE, as ALNS had a better mechanism that was designed to escape from the local optimal.
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Arpini, Bianca Passos, and Rodrigo Alvarenga Rosa. "Planejamento da logística de suprimento de plataformas Offshore por meio de um modelo matemático 2L-CVRP com frota heterogênea e equilíbrio náutico." TRANSPORTES 23, no. 4 (November 9, 2015): 67. http://dx.doi.org/10.14295/transportes.v23i4.920.

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<p>No Brasil a exploração de petróleo ocorre, sobretudo, no mar onde são implantadas plataformas <em>offshore</em> que estão distantes da costa. Logo, é fundamental planejar a logística de suprimento por meio de navios. Este artigo propõe um modelo matemático de Programação Linear Inteira Mista denominado <em>Weight Balance Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem</em> (WB2L-HFVRP) aplicado ao planejamento da logística de suprimento de plataformas <em>offshore</em> visando a criação de rotas que considerem o equilíbrio náutico e a melhor arrumação das cargas no convés. Este modelo se diferencia por considerar frota heterogênea e utilizar uma função objetivo que visa minimizar o número de navios, a distância navegada e a diferença entre os pesos distribuídos entre os bordos do navio para manter o equilíbrio náutico. Testou-se o modelo em instâncias baseadas em dados reais da Petrobras no CPLEX 12.6 e alcançou-se uma redução de até 25% em relação à distância real navegada.</p>
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KIM, Injune, Hwan-Gyu KIM, Hyun KIM, Hong-Hee KIM, Sung Kwang PARK, Chang-Sub UHM, Zang Hee LEE, and Gou Young KOH. "Hepatic expression, synthesis and secretion of a novel fibrinogen/angiopoietin-related protein that prevents endothelial-cell apoptosis." Biochemical Journal 346, no. 3 (March 7, 2000): 603–10. http://dx.doi.org/10.1042/bj3460603.

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Using degenerate PCR we isolated a cDNA encoding a novel 406- and 410-amino acid protein from human and mouse embryonic cDNAs and have designated it ‘hepatic fibrinogen/angiopoietin-related protein’ (HFARP). The N-terminal and C-terminal portions of HFARP contain the characteristic coiled-coil domains and fibrinogen-like domains that are conserved in angiopoietins. In human and mouse tissues, HFARP mRNA is specifically expressed in the liver. HFARP mRNA and protein are mainly present in the hepatocytes. HFARP has a highly hydrophobic region at the N-terminus that is typical of a secretory signal sequence and one consensus glycosylation site. Recombinant HFARP expressed in COS-7 cells is secreted and glycosylated. HFARP protein is present not only in the hepatocytes, but also in the circulating blood. Recombinant HFARP acts as an apoptosis survival factor for vascular endothelial cells, but does not bind to Tie1 or Tie2 (endothelial-cell tyrosine kinase receptors). These results suggest that HFARP may exert a protective function on endothelial cells through an endocrine action.
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Jilcott Pitts, Stephanie, Qiang Wu, Kimberly Truesdale, Lindsey Haynes-Maslow, Jared McGuirt, Alice Ammerman, Ronny Bell, and Melissa Laska. "One-Year Follow-Up Examination of the Impact of the North Carolina Healthy Food Small Retailer Program on Healthy Food Availability, Purchases, and Consumption." International Journal of Environmental Research and Public Health 15, no. 12 (November 28, 2018): 2681. http://dx.doi.org/10.3390/ijerph15122681.

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We examined the short-term impact of the North Carolina Healthy Food Small Retailer Program (HFSRP), a legislatively appropriated bill providing funding up to $25,000 to small food retailers for equipment to stock and promote healthier foods, on store-level availability and purchase of healthy foods and beverages, as well as customer dietary patterns, one year post-policy implementation. We evaluated healthy food availability using a validated audit tool, purchases using customer bag-checks, and diet using self-reported questionnaires and skin carotenoid levels, assessed via Veggie Meter™, a non-invasive tool to objectively measure fruit and vegetable consumption. Difference-in-difference analyses were used to examine changes in HFSRP stores versus control stores after 1 year. There were statistically significant improvements in healthy food supply scores (availability), with the Healthy Food Supply HFS score being −0.44 points lower in control stores and 3.13 points higher in HFSRP stores pre/post HFSRP (p = 0.04). However, there were no statistically significant changes in purchases or self-reported consumption or skin carotenoids among customers in HFSRP versus control stores. Additional time or other supports for retailers (e.g., marketing and promotional materials) may be needed for HFSRP implementation to influence purchase and consumption.
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Ali, Afsar, Mohammed H. Rashid, and David K. R. Karaolis. "High-Frequency Rugose Exopolysaccharide Production by Vibrio cholerae." Applied and Environmental Microbiology 68, no. 11 (November 2002): 5773–78. http://dx.doi.org/10.1128/aem.68.11.5773-5778.2002.

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ABSTRACT Vibrio cholerae can shift to a “rugose” phenotype, thereby producing copious exopolysaccharide (EPS), which promotes its environmental survival and persistence. We report conditions that promote high-frequency rugose EPS production (HFRP), whereby cells switch at high frequency (up to 80%) to rugose EPS production. HFRP appeared to be more common in clinical strains, as HFRP was found in 6 of 19 clinical strains (32%) (including classical, El Tor, and non-O1 strains) but in only 1 of 16 environmental strains (6%). Differences were found between strains in rugose colony morphology, conditions promoting HFRP, the frequency of rugose-to-smooth (R-S) cell reversion, and biofilm formation. We propose that rugose EPS and HFRP provide an evolutionary and adaptive advantage to specific epidemic V. cholerae strains for increased persistence in the environment.
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Dissertations / Theses on the topic "HFVRP"

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Arpini, Bianca Passos. "Planejamento da logística de suprimento de plataformas offshore por meio de um modelo matemático 2L-CVRP com frota heterogênea e equilíbrio náutico." reponame:Repositório Institucional da UFES, 2015. http://repositorio.ufes.br/handle/10/1688.

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Submitted by Elizabete Silva (elizabete.silva@ufes.br) on 2015-10-02T19:38:15Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) PLANEJAMENTO DA LOGÍSTICA DE SUPRIMENTO DE PLATAFORMAS OFFSHORE POR MEIO DE UM MODELO MATEMÁTICO 2L-CVRP COM FROTA HETEROGÊNEA E EQUILÍBRIO NÁUTICO.pdf: 4092400 bytes, checksum: 2f3e443433630154f11373b75d34eaa9 (MD5)
Approved for entry into archive by Morgana Andrade (morgana.andrade@ufes.br) on 2016-01-07T14:51:32Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) PLANEJAMENTO DA LOGÍSTICA DE SUPRIMENTO DE PLATAFORMAS OFFSHORE POR MEIO DE UM MODELO MATEMÁTICO 2L-CVRP COM FROTA HETEROGÊNEA E EQUILÍBRIO NÁUTICO.pdf: 4092400 bytes, checksum: 2f3e443433630154f11373b75d34eaa9 (MD5)
Made available in DSpace on 2016-01-07T14:51:32Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) PLANEJAMENTO DA LOGÍSTICA DE SUPRIMENTO DE PLATAFORMAS OFFSHORE POR MEIO DE UM MODELO MATEMÁTICO 2L-CVRP COM FROTA HETEROGÊNEA E EQUILÍBRIO NÁUTICO.pdf: 4092400 bytes, checksum: 2f3e443433630154f11373b75d34eaa9 (MD5) Previous issue date: 2015
CAPES
O petróleo é um importante recurso no mundo atual e sua exploração no Brasil se baseia, sobretudo, na exploração em águas profundas, para a qual são implantadas plataformas offshore. Como estas plataformas estão distantes da costa brasileira e isoladas, é fundamental planejar a logística de suprimento, que inclui, entre outros elementos, as embarcações de apoio offshore, as quais são responsáveis por abastecer as plataformas e constituem um recurso caro. Nos sistemas logísticos, é essencial planejar e gerenciar as atividades de transportes de cargas, pois os custos relativos ao transporte representam uma grande parcela dos custos logísticos totais. Portanto, no contexto analisado, é importante minimizar os custos de transporte por meio de um eficiente planejamento dos navios de suprimento. Nesse sentido, há dois aspectos centrais na gestão de distribuição logística: problemas de roteamento de veículos, usados para determinar a rota ótima, e problemas de carregamento, usados para definir a melhor maneira de carregar mercadorias dentro dos veículos utilizados no transporte. Visando a criação de rotas e a arrumação bidimensional de cargas, foi proposto na literatura o Problema de Roteamento de Veículos Capacitados com Restrições de Carregamento Bidimensional (Capacitated Vehicle Routing Problem with Two-dimensional Loading Constraints – 2L-CVRP). Esta dissertação tem por objetivo propor um modelo matemático de Programação Linear Inteira Mista baseado no 2L-CVRP aplicado ao planejamento da logística de suprimento de plataformas offshore para criar rotas considerando o equilíbrio náutico e a melhor arrumação das cargas no convés, denominado Weight Balance Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem (WB2L-HFVRP). Este modelo se diferencia por considerar frota heterogênea e utilizar uma função objetivo que visa minimizar o número de navios, a distância navegada e a diferença entre os pesos distribuídos entre os bordos do navio. Testes em instâncias baseadas em dados reais da Petrobras foram feitos no CPLEX 12.6 e mostraram uma redução de até 25% em relação à distância real navegada.
Oil is an important resource in today's world and its exploitation in Brazil is based mainly on deepwater exploration, for which offshore platforms are deployed. As these platforms are isolated and distant from the Brazilian coast, it is essential to plan the supply logistics, which includes, among other elements, the offshore support vessels, which are responsible for supplying the platforms and are an expensive resource. On logistics systems, is essential to plan and manage the activities of freight transport, because the transport costs represent a large portion of total logistics costs. Therefore, in the analyzed context, it is important to minimize transportation costs through efficient planning of the supply vessel. In this sense, there are two central aspects in the management of logistics distribution: Vehicle Routing Problems, used to determine the optimal route, and Loading Problems, used to define the best way of carrying goods in vehicles used for transport. Aiming to create routes and the two-dimensional storage of cargo, has been proposed in the literature the Capacitated Vehicle Routing Problem with Two-dimensional Loading Constraints (2L-CVRP). This essay aims to propose a mathematical model of Mixed Integer Linear Programming based on 2L-CVRP applied to planning the supply logistics of offshore platforms to create routes considering the nautical balance and better storage of cargo on deck, named Weight Balance Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem (WB2L-HFVRP). This model differs from other models because it considers heterogeneous fleet and uses a objective function that aims to minimize the number of ships, sailed distance, and the difference between the weights distributed between the sides of the ship, the nautical balance. Tests on instances based on real data from Petrobras were made in CPLEX 12.6 and showed a reduction of up to 25% compared to the actual sailed distance.
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Beránek, Michal. "Evoluční optimalizace nákladní přepravy." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445582.

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The following thesis deals with optimization of freight transport planning. The goal is to minimize expenses connected to transportation, which emerge from travelled distance. The expenses can be heavily reduced, if the routes are correctly planned, especially when there is a large number of customers to be served. This thesis focuses on solving the problem by using the evolutional algorithms, that are optimization methods based on principles of evolution. Thesis concentrates on Heterogeneous Fixed Fleet Vehicle Routing Problem. Thesis introduces multiple evolutional algorithms and their results are compared. The best algorithm, evolutional strategy with local neighbourhood search, achieves similar, for certain tasks even better results, than other existing evolutional algorithms, created to solve given problem.
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Book chapters on the topic "HFVRP"

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Ikematsu, Yasuhiko, Ray Perlner, Daniel Smith-Tone, Tsuyoshi Takagi, and Jeremy Vates. "HFERP - A New Multivariate Encryption Scheme." In Post-Quantum Cryptography, 396–416. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-79063-3_19.

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Garbacz, Andrzej, Elzbieta Szmigiera, Kostiantyn Protchenko, and Marek Urbanski. "On Mechanical Characteristics of HFRP Bars with Various Types of Hybridization." In International Congress on Polymers in Concrete (ICPIC 2018), 653–58. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78175-4_83.

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Wijayawardane, I., H. Mutsuyoshi, and S. Perera. "Flexural behavior of composite girders consisting of HFRP and UHSFRC slabs." In Life-Cycle of Civil Engineering Systems, 1989–94. CRC Press, 2014. http://dx.doi.org/10.1201/b17618-295.

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"Study on mechanical behavior of circular concrete columns confined by HFRP under axial compressive load." In Research and Applications in Structural Engineering, Mechanics and Computation, 909–10. CRC Press, 2013. http://dx.doi.org/10.1201/b15963-442.

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Conference papers on the topic "HFVRP"

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Nguyen, H., H. Mutsuyoshi, and W. Zatar. "Structural Behavior of HFRP-UHPFRC Composite Girders." In Structures Congress 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412848.049.

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AbouEl-Hamd, Omnia, Amr Sweedan, and Khaled El-Sawy. "Structural Behavior of HFRP-Steel Double-Lap Joints with FRP Bolts." In The 2nd World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2017. http://dx.doi.org/10.11159/icsenm17.103.

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Zhang, Jian, Tai-Yun Fang, and Xin Ye. "Analysis of RC Rectangle Beams Reinforced with High Performance HFRP Sheets." In The 2nd Annual International Workshop on Materials Science and Engineering (IWMSE 2016). WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813226517_0155.

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Zhang, Biao, Quan-ke Pan, Liang Gao, and Yao-bang Zhao. "MOEA/D for Multi-Objective Hybrid Flowshop Rescheduling Problem." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6581.

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In this paper, a multi-objective hybrid flowshop rescheduling problem (HFRP) is addressed in a dynamic shop environment where two types of real-time events, namely machine breakdown and job cancellation, simultaneously happen. For the addressed problem, two objectives are considered. One objective concerning the production efficiency is minimizing the maximum completion time or makespan, while regarding with the instability, the total number of the jobs assigned to different machines between the revised and the origin schedule is considered. A multi-objective evolutionary algorithm based on decomposition (MOEA/D) is applied to solve this problem. In the algorithm, the weighted sum approach is used as the decomposition strategy. The algorithm is, then, rigorously compared with three state-of-the-art evolutionary multi-objective optimizers, and the computational results demonstrate the effectiveness and efficiency of the algorithm.
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Geri, Mohammed Ba, Ralph Flori, and Huosameddin Sherif. "Comprehensive Study of Elasticity and Shear-Viscosity Effects on Proppant Transport Using HFVRs on High-TDS Produced Water." In Unconventional Resources Technology Conference. Tulsa, OK, USA: American Association of Petroleum Geologists, 2019. http://dx.doi.org/10.15530/urtec-2019-99.

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Yongchang, Guo, Li Lijuan, Deng Jun, Zhong Genquan, Jane W. Z. Lu, Andrew Y. T. Leung, Vai Pan Iu, and Kai Meng Mok. "The Influence of Hollow Imperfections of Adhesive on Performances of Interface of RC Beams Strengthened with HFRP." In PROCEEDINGS OF THE 2ND INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL MECHANICS AND THE 12TH INTERNATIONAL CONFERENCE ON THE ENHANCEMENT AND PROMOTION OF COMPUTATIONAL METHODS IN ENGINEERING AND SCIENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3452303.

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