Дисертації з теми "City logistic"
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Wang, Qiuchen, and Santiago Mompo. "Electric-road freight transport, Arlanda-Rosersberg logistic flow and environmental analysis." Thesis, KTH, Trafik och logistik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149534.
Повний текст джерелаMARIANTE, EUGENIO. "A PROPOSAL FOR LOGISTIC CONDOMINIUM IMPLEMENTATION CRITERIA FOR THE CITY OF RIO DE JANEIRO." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32446@1.
Повний текст джерелаThis study presents a discussion of criteria for evaluation in the metropolitan region of the city of Rio de Janeiro and its impacts in order to be reviewed in terms of construction as well as its financial and operational performance. As a way to study, were looked for reference topics and also real enterprises options to compare indicators for development, definition and propose conditions for good performance in this area and scope. Logistics condos can be defined as storage areas in a consolidated or segregated way, using areas that can be shared with companies or used alone to meet demand or provide gains through their use. These centers were developed to provide economies for logistics operators, carriers, industries and retailers, meeting their needs for warehousing, distribution, cargo consolidation and vehicles distribution. By bringing together several sheds with flexibility to segregate spaces in a unique place with security and shared services infrastructure, where companies enjoy a cost-benefit relationship that they would not be able to achieve alone. In addition, it aims to offer services and provide logistical integration, cost reduction in inventories, facilities and processes, as mentioned by DIAS (2013). Logistics condos are also considered as evolution of the Distribution Centers (CDs) and are made up of different complexes of warehouses with different sizes and modules, located in condominiums, where costs, infrastructure are shared, as well as expenses with surveillance and security (Sobreira, 2012). According to DUBKE (2006), a logistics platform is a name given to logistics centers that operate by adding value to the product through a wide variety of services. Another mention is the Integrated Logistics Center (ILC) concept, which brings together a number of functions of transportation, logistics, operational support, and industrial processing. Such ILCs may house intermodal road and rail terminals and logistics platforms capable of carrying out for example stocking, distribution and consolidation operations. Through this concept, it can be concluded that logistics condominiums can be part of logistics platforms as a whole, mainly because they are sheds for the storage part as mentioned.
Mervart, Michal. "City logistika a simulace v city logistice." Doctoral thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-77137.
Повний текст джерелаDelgado, Stephen, Kacey Ernst, Maria Luz Pumahuanca, Stephen Yool, Andrew Comrie, Charles Sterling, Robert Gilman, Cesar Naquira, Michael Levy, and Chagas Disease Working Group in Arequipa the. "A country bug in the city: urban infestation by the Chagas disease vector Triatoma infestans in Arequipa, Peru." BioMed Central, 2013. http://hdl.handle.net/10150/610166.
Повний текст джерела95% CI: 18.4 - 19.2%) were infested by T. infestans. Eighty clusters of infestation were identified, ranging in area from 0.1 to 68.7 hectares and containing as few as one and as many as 1,139 infested households. Spatial dependence between infested households was significant at distances up to 2,000 meters. Household T. infestans infestation was associated with household- and locality-level factors, including housing density, elevation, land surface temperature, and locality type.CONCLUSIONS:High levels of T. infestans infestation, characterized by spatial heterogeneity, were found across extensive urban and peri-urban areas prior to vector control. Several environmental and social factors, which may directly or indirectly influence the biology and behavior of T. infestans, were associated with infestation. Spatial clustering of infestation in the urban context may both challenge and inform surveillance and control of vector reemergence after insecticide intervention.
Fasesin, Kingsley, Ingrid Luffman, Eileen Ernenwein, and Arpita Nandi. "Improving Sinkhole Mapping Using LiDAR Data and Assessing Road Infrastructure at Risk in Johnson City, TN." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/30.
Повний текст джерелаZaoralová, Lenka. "City logistika a problémy velkých aglomerací - New York City." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-4572.
Повний текст джерелаBaravdish, Rabi, and Nemrod Barkarmo. "City logistics - The potential of consolidating goods in the city of Norrköping." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141683.
Повний текст джерелаBokij, Lilia. "Aglomerace Olomouc v mezinárodních logistických sítích." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-16307.
Повний текст джерелаPunase, Shubha. "Utilizing Multiple Data Sources In The Preparation Of A Vision Zero Plan For The City Of Alexandria: Investigating The Relationship Between Transportation Infrastructure, Socio- Economic Characteristics, And Crash Outcomes In The City." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/78329.
Повний текст джерелаMaster of Urban and Regional Planning
“Vision Zero,” first adopted by Sweden in 1997, is a road safety policy that aims to achieve a transportation system having zero fatalities or serious injuries for all modes of transportation. It takes a proactive approach to road safety system by identifying risk and taking steps to prevent injuries. Historically, traffic related crashes have disproportionately impacted vulnerable communities and system users including people of color, low income individuals, seniors, children, and pedestrians, bicyclists, and transit users (who typically walk to and from public transport). These inequities are addressed in the Vision Zero framework by prioritizing interventions in areas that need safety improvements the most. In 2016, the Alexandria City Council voted unanimously to develop a “Vision Zero” policy and program as a part of its updated transportation master plan. It required an initial equity analysis to assess the impact of traffic crashes on the traditionally underserved communities / groups (groups from at least one of these categories: low-income; minority; elderly; children; limited English proficiency; persons with disabilities; and/or pedestrians/ bicyclists/ transit users). This study combines three different methods to investigate the equity issues regarding traffic safety: 1) descriptive analysis of the spatial pattern of crashes and their relationship with the demographic profiles of neighborhoods at census block group level (for 2010-2014 period); 2) descriptive analysis of the crash trends in Alexandria; and 3) exploratory regression analyses for two different units of analysis (an aggregate regression analysis of crashes at census block group, and a disaggregate regression analysis of the individual level crash reports of traffic crashes). The analysis found that the elderly, school aged children, rail/subway users, and pedestrians had a higher risk of fatalities and severe injuries in traffic crashes. Higher job densities, alcohol impairment, and speeding were significantly related to higher KSI, whereas, smaller block sizes (higher number of street segments per sq. mile area of census block group), higher housing density, and use of safety equipment were related to lower KSI.
Cattaruzza, Diego. "Vehicle Routing for City Logistics." Thesis, Saint-Etienne, EMSE, 2014. http://www.theses.fr/2014EMSE0737/document.
Повний текст джерелаTransportation of merchandise in urban areas has become an important nowadays topic. In fact, transportation is a vital activity for each city, but entail pollution, congestion, accidents.City logistics aims at optimizing the whole urban logistics and transportation process, taking into account environmental and social aspects. This thesis, that is part of the MODUM project, finds its location in this area of research. In particular, MODUM aims at studying a delivery system based on City Distribution Centers.We first present a classification and an analysis of urban good movements and routing problems peculiar to metropolitan areas. A second survey proposes a complete collection of articles that has been done on the Multi Trip Vehicle Routing Problem (MTVRP). The MTVRP is an extension of the Vehicle Routing Problem (VRP) where vehicles are allowed to perform several trips.We propose an efficient heuristic for the MTVRP that is, in a subsequent step, adapted to a new routing problem, the MTVRP with Time Windows and Release Dates (MTVRPTWR). It is a variant of the MTVRP where each customer is associated with a time window and each merchandise is associated with a release date that represents the instant it becomes available at the depot.We, then, study a variant of the MTVRP where goods belong to different commodities that cannot be transported at the same time by the same vehicle. An analysis is conducted on the benefits of the multi-trip aspect in fleet dimensioning problems.Finally we describe the complex routing problem that arises in MODUM and the simulator that is developed to evaluate the performances of the system
Syed, Haseeb Ahmed, and Olanrewaju John Ajifowowe. "Evaluation and assessment of relocation from a city to the outskirts: Case study DHL Gävle (Sweden)." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27353.
Повний текст джерелаŠkopová, Anna. "City logistika v Paríži." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-115660.
Повний текст джерелаHajžmanová, Martina. "City logistika - aplikace ve městě Plzni." Master's thesis, Vysoká škola ekonomická v Praze, 2006. http://www.nusl.cz/ntk/nusl-645.
Повний текст джерелаTsaxiri, Panagiota. "Problems and Solutions in Urban Construction Logistics." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-147856.
Повний текст джерелаBürckel, Jannik, and Tobias Schreckenbach. "Actors in innovative City Logistics Networks : Individual Actors jointly forming City Logistics Networks and their Contribution towards Innovation." Thesis, Högskolan i Jönköping, Internationella Handelshögskolan, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-44045.
Повний текст джерелаLi, Jun. "Autonomous Mobile Lockers (AMLs) for City Logistics." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29359.
Повний текст джерелаDezi, Giampaolo <1980>. "City logistics: trasporto merci in ambito urbano." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2519/1/Giampaolo_Dezi_tesi.pdf.
Повний текст джерелаDezi, Giampaolo <1980>. "City logistics: trasporto merci in ambito urbano." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2519/.
Повний текст джерелаPopďakunik, Lukáš. "City logistika Pardubicko-Hradeckého regionu." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-10841.
Повний текст джерелаNordin, Ludwig, Bozbey Karl Björnstedt, Martin Overgaard, and Lundgren Philip Persson. "Citylogistik och logistikföretag i en kontext av ökad e-handel : med olika utmaningar och hur logistikföretag hanterar utmaningarna." Thesis, Malmö universitet, Institutionen för Urbana Studier (US), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-44017.
Повний текст джерелаVi har gjort en studie som är ämnad att undersöka och förstå hur logistikföretag inom citylogistik hanterar ökade e-handelsutmaningar samt beskriva åtgärder de vidtar. För att kunna göra det har vi utgått från två frågeställningar som lyder: “Vilka utmaningar, orsakade av ökad e-handel, finns för logistikföretag inom citylogistik?” och “Vad görlogistikföretag inom citylogistik för att hantera de utmaningar som finns och som är orsakade av ökad e-handel?” Vidare presenteras det teoretiska referensram där utmaningar och innovationer för logistikföretag inom citylogistik är en central del. Vi har använt oss utav ett kvalitativt angreppssätt där vi har genomfört semistrukturerade intervjuer för att få den väsentliga informationen för att kunna analysera gentemot vår teoretiska referensram. Rubriker som finns i den teoretiska referensramen återkommer i både det empiriska materialet och analysen för att få en röd tråd genom hela studien. I analysen har vi däremot våra frågeställningar som huvudrubriker för att verkligen analysera utmaningarna och innovationerna. Vår studie har bidragit med en ökad förståelse hur logistikföretag inom citylogistik hanterar ökad e-handelsutmaningar samt vilka åtgärder de vidtar. Vi har konstaterat att den ökade e-handeln har medfört utmaningar för logistikföretag inom citylogistik. E-handelslogiken har blivit mer komplex på senaste tiden där korta ledtider, fler men mindre paket och högre krav från konsumenterna har tillkommit vilket anses som utmaningar för logistikföretagen. Studien visar på de huvudsakliga utmaningarna som ökad e-handel medfört. Studien visar även på olika innovationer och åtgärder som används av logistikföretag inom citylogistik.
Neman, Emma, and Siyabend Öz. "Citylogistik : Godsflöden till och godshantering i ett köpcentrum." Thesis, Högskolan i Skövde, Institutionen för handel och företagande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-16948.
Повний текст джерелаCity logistics is a complex phenomenon that includes all trips to, out of and within a selected urban area with road vehicles whose task is to collect or deliver goods. The cities are a major driving force for an individual country's economy and, since freight transport is fundamental to our existing lifestyle, it is more important than ever that the flow of goods in cities works to increase the availability of products and materials. The increased urbanization in Sweden has increased the demand for freight transport within the cities. However, transport activities lead to increased air pollution, greenhouse gas emissions, noise, visual intrusion and traffic congestion that is costly to society. Today in Europe, urban transport accounts for a quarter of the transport's carbon dioxide emissions and 69% of all traffic accidents occur in cities. Transport planning is a complicated task that involves many interactions between different stakeholders. There are many different stakeholders along a supply chain, all of which have different requirements and perceptions of freight transport. Companies tend to worry more about how customers should have access to services and products rather than how the products should be delivered. This study aims to gain a deeper understanding of the complex logistics system that exists in Skövde in order to design city logistics initiative that are sustainable and promote the interests of the stakeholders. Commerce, the city mall of Skövde receives deliveries of goods every day to over 50 stores through two loading docks with limited capacity. To answer the report's problem questions, measurements and observations have been carried out, as well as interviews and questionnaires with the actors involved within the framework of this work. The authors have identified an opportunity to make capacity available on one of the loading docks by building a ramp.
Kempke, Michael. "A logistics optimization study for Garden City Co-op, Inc." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/32787.
Повний текст джерелаDepartment of Agricultural Economics
Brian C. Briggeman
Garden City Co-op, Inc. is a farm cooperative in Southwest Kansas. It provides marketing and storage of grain, fertilizer, crop protection products, seed, and petroleum to both member and non-member accounts. The cooperative also operates a transportation company called Western Transport. Western Transport provides transportation of anhydrous ammonia (NH3), liquid fertilizer (32-0-0 or 10-34-0), diesel, gasoline, and propane utilizing semi-tractors and trailers to Garden City Co-op, Inc. as well as to other agribusinesses in the region. The purpose of this thesis is to integrate and optimize the supply chain strategies for the cooperative’s fertilizer and petroleum products as it relates to storage and transportation of those commodities. Utilizing the framework of an aggregate production plan, a model is constructed to minimize costs associated with inventory holding, net storage asset depreciation after tax savings, net transportation asset depreciation after tax savings, labor, operations, and freight. By varying the quantities of petroleum and fertilizer the cooperative purchases, sells, and stores each month over a one-year period, an optimum mix of storage and transportation assets is determined. Two different demand scenarios are evaluated that relate to demand during a drought year versus demand during a non-drought year. Also, different model scenarios include varying beginning period inventory and ending period inventory to stress transportation assets versus storage assets. The model is optimized using a genetic algorithm solver in the software program Evolver produced by Palisade Corporation. Results of the optimization provided two feasible strategies for the cooperative. By continuing services to non-member accounts, there was a greater investment placed on transportation. Investments included additional trucks, NH3 trailers, petroleum trailers, and drivers. The strategy favored a just-in-time inventory approach versus inventory smoothing with storage. When discontinuing services to non-member accounts, investment between storage and transportation assets were relatively equal. The model favored a reduction in NH3 trailers, liquid fertilizer trailers, trucks, and drivers. However, additional storage was necessary as well as petroleum trailers. The scenario favored an inventory smoothing approach across the model year.
Dutra, Nadja Glheuca da Silva. "O enfoque de city logistics na distribuição urbana de encomendas." Florianópolis, SC, 2004. http://repositorio.ufsc.br/xmlui/handle/123456789/87149.
Повний текст джерелаMade available in DSpace on 2012-10-21T15:19:28Z (GMT). No. of bitstreams: 1 206932.pdf: 1623951 bytes, checksum: 473c9c67aafcb2d5cc8e37b5e9f9d340 (MD5)
Não é novo o conflito causado pela movimentação de cargas no espaço urbano. Porém, muitas vezes, esse assunto fora deixado de lado pelo fato de existirem outras prioridades, mais voltadas ao transporte coletivo e à circulação em geral. Isso pode ser constatado quando se compara o número de publicações científicas entre os temas. Mas, devido à crescente necessidade e ao aumento de tráfego dessas cargas, sobretudo nas áreas centrais urbanas, o tema "carga urbana" vem assumido papel de destaque nas propostas de melhorias da qualidade ambiental desses centros. Assim, com o intuito de promover a mobilidade urbana com vistas à sustentabilidade do setor transportes, surgem novas propostas de arranjos das formas de entregas nas cidades como meio de solucionar os transtornos dessa circulação de mercadorias (seja pela intrusão visual, poluição sonora, aumento do número de emissões etc). Cinco "áreas-chave" podem ser identificadas como estratégias em transportes, das quais se podem esperar ganhos ambientais e de competitividade para as companhias envolvidas no processo de movimentações de carga: 1) motores menos poluentes, 2) treinamento de pessoal (motoristas), 3) adoção de meios de transportes ambientalmente mais favoráveis, 4) redução do número de veículos circulando e 5) o emprego dos conceitos de city logistics. Esse trabalho analisou os benefícios advindos do emprego dos conceitos em city logistics na melhoria do ambiente urbano para uma realidade nacional, estudando-se o comportamento da área central de Florianópolis numa aplicação. Estimaram-se os custos envolvidos (mão-de-obra, operação, instalações etc.) para a atual realidade, comparando-os, posteriormente, à outra, hipotética, na qual os conceitos de city logistics se fizeram presentes. Bons resultados, tanto do ponto de vista ambiental (dada a redução do número emissões e de veículos), quanto de competitividade (custos em geral), puderam ser observados, ratificando e estimulando o uso desse tipo de conceito.
Alessi, Giada <1992>. "City Logistics: la gestione sostenibile del trasporto urbano delle merci." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/11781.
Повний текст джерелаKalif, Hassan Gelle, and Henrik Karlsson. "Kommuners användande av City Logistik : En undersökning om utsläppsmängder av koldioxid." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22206.
Повний текст джерелаTruck transports represent majority of all transports within the municipal sector in Sweden. Most of these transports are directly from the suppliers to the customers. This results in a large number of vehicles within the city center and increase amounts of carbon dioxide emissions. This thesis, therefore, aims to investigate how a municipality with about 70 000 inhabitants can reduce their carbon dioxide emissions from their transports, and still maintain profitability by using city logistics. The thesis discusses the concept city logistics and how the method is used within the transport sector. Furthermore, it illustrates pollution from different fuel options and the socioeconomic hindrances that exist within the transport operations regarding environmental issues. Case study is used as a method, based on interviews with concerned parties, which hold positions within the organizations where they work with, or plan regarding city logistics from the municipalities of Sandviken and Gävle. Furthermore, analysis has been done on organizational documents with three municipalities that have performed similar ventures. The results show that all municipalities that have implemented city logistics have experienced decrease in carbon dioxide emissions on different levels. They also observed benefits regarding the choice of HVO100 as fuel for the logistics within the cities. The conclusion shows that city logistics can be used effectively in municipality operations to both lower their carbon dioxide pollution, as well as improve work safety, economy, operational planning, environmental requirements on their suppliers and increased work environment.
Leshchenko, Alexander. "City logistika ? a její aplikace v podmínkách Moskvy." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-2194.
Повний текст джерелаEnglund, Gustav, and Martin Westh. "Transition to electric-powered buses in Stockholm inner citys public transport." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144582.
Повний текст джерелаJoel, Teo Sze Ern. "EVALUATION OF CITY LOGISTICS SCHEMES WITH MULTI-AGENT SYSTEMS LEARNING MODELS." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/160991.
Повний текст джерелаLindberg, Jenny, and Alexander Nelson. "Metod för att mäta förändring av city logistik : - En casestudie på Sandvikens kommun." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-13152.
Повний текст джерелаAtt distribuera varor till kunder i tätorter är nödvändigt för att stödja den ekonomiska och sociala utvecklingen i städerna men medför konsekvenser som dels påverkar invånare i städer såväl som miljön. Miljöeffekterna av dessa typer av transporter involverar inte enbart utsläpp av olika föroreningar utan även en förhöjd bullernivå inne i städerna. Många företag och organisationer arbetar hårt med att förändra distributionsmönstret för att kunna effektivisera transporter inom tätbebyggt område samtidigt som miljöeffekter skall reduceras. Detta ligger i linje med det som kallas City logistik. Syftet med arbetet är att skapa en metod för att beskriva och mäta en given transportlösning i syfte att kunna jämföra den med en förändrad transportlösning för att uppnå en mer hållbar utveckling. För att konstruera en metod så måste man först ta reda på vilka tidigare metoder och modeller som finns. I vårt fall så fann vi tre specifika modeller som vi ansåg lämpliga att studera i sin helhet och se huruvida dessa skulle passa för det vi ville mäta. Det vi konstaterade i dessa modeller är att det inte mäter exakt det vi syftar till att mäta, vissa delar från de olika modellerna kunde anammas och användas samtidigt som vi kompletterade med andra aspekter som exempelvis miljöaspekten. Miljöaspekten är något som vi anser att de modeller som presenterades i litteraturen inte tog med i beräkningen. Däremot presenterade den övriga litteraturen vikten av att arbeta med att minska utsläppen, eftersom fokus hos många företag har varit att effektivisera produktionsprocesserna och minska effekterna från dessa så har miljöeffekterna från transporterna hamnat i skymundan. De färdiga modellerna hade också en helhetssyn på hela försörjelsekedjan, från inkommande material till produktion, lagring och distribution. Vi fann där en brist på modeller som mäter endast distribution från distributionscentral. Vår metod ger användaren en bild av trafiksituationen som den sedan kan jämföra med det nya utfallet vid nästa mätning. Metoden som vi har tagit fram i detta examensarbete är tänkt att kunna användas som ett verktyg vid årlig uppföljning av verksamhetens transporter för att mäta och se förändringar, eventuella mönster och trender kan upptäckas. Sandvikens kommun används som case för i detta examensarbete, för att kunna testa metoden och kunna dra slutsatser om hur den metoden fungerar.
Ryberg, Lisa, and Johanna Skogum. "Hållbar citylogistik : En fallstudie över hur flödet av godstransporter i Skövdes stadskärna kan förbättras utifrån ett intressent- och hållbarhetsperspektiv." Thesis, Högskolan i Skövde, Institutionen för handel och företagande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-16926.
Повний текст джерелаIn order to create an attractive urban centre where people thrive, freight transport needs to provide the urban centre businesses with deliveries. However, these urban freight transports have several negative effects on profitability, people and the planet. The aim of this case study is therefore to create a more sustainable city logistics, where the flow of freight transports into, within and out of Skövde's urban centre will be improved from both a stakeholder and sustainability perspective. The study also considers the existing problems and challenges, and what conflicts of interest can arise, in the creation of a sustainable city logistics. The theoretical framework presents the content of a sustainable city logistics and which stakeholders and actors are involved in the creation of a sustainable city logistics. Later the negative impacts of urban freight transport are described from a social, economic and environmental perspective, which forms the basis for the theoretical improvement proposals. The proposals for improvement should benefit as many stakeholders as possible in order to be credible, and improve the flow of freight transport into, within and out of Skövde's urban centre. In order to study the problems in Skövde's urban centre from the perspective of different stakeholders, the empirical data collection consists of a combined research methodology. The data collection contains a direct observation and quantitative data considering the movement of freight transport in Skövde's urban centre. Furthermore, the study contains surveys and interviews with distributors and receivers in Skövde's urban centre. Each stakeholder has also been given the opportunity to rank which negative impacts of urban freight transport they considered to be more or less important in the creation of a sustainable city logistics in Skövde. The analysis is based on both proposals for improvement and the stakeholders' perspective on sustainable city logistics to find out how the flow of freight transport in Skövde's urban centre can be improved from a sustainability perspective in order to benefit several stakeholders. The result contains four recommended improvement proposals that are considered reasonable to implement in Skövde's urban centre within an estimated time horizon.
Samuelsson, Stefan, and Mia Ahmetasevic. "Management of construction logistics in Stockholm : Identifying ways of improvement for construction logistics within the inner city of Stockholm." Thesis, Uppsala universitet, Byggteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-228285.
Повний текст джерелаGruler, Aljoscha Claudio. "Simheuristics to support efficient and sustainable freight transportation in smart city logistics." Doctoral thesis, Universitat Oberta de Catalunya, 2018. http://hdl.handle.net/10803/666647.
Повний текст джерелаLas actividades de logística en ciudades inteligentes constituyen un factor crucial en la creación de sistemas de transporte urbano eficientes y sostenibles. Entre otros factores, estos sistemas se centran en la incorporación de datos en tiempo real y la creación de modelos empresariales colaborativos en el transporte urbano de mercancías, al tiempo que consideran el aumento del número de habitantes en las ciudades, la creciente complejidad de las demandas de los clientes y los mercados altamente competitivos. Esto permite minimizar los costes monetarios y ambientales del transporte de mercancías en las áreas metropolitanas. Muchos de los problemas de toma de decisiones en este contexto se pueden formular como problemas de optimización combinatoria. Si bien existen diferentes enfoques de resolución exacta para encontrar soluciones óptimas a tales problemas, su complejidad y tamaño, además de la necesidad de tomar decisiones instantáneas con respecto al enrutamiento, la programación o la ubicación de las instalaciones, hacen que dichas metodologías sean inaplicables en la práctica. Debido a su capacidad para encontrar soluciones pseudoóptimas casi en tiempo real, los algoritmos metaheurísticos reciben cada vez más atención por parte de investigadores y profesionales como alternativas eficientes y fiables para resolver numerosos problemas de optimización en la creación de la logística de ciudades inteligentes. A pesar de su éxito, las técnicas metaheurísticas tradicionales no representan completamente la complejidad de los sistemas más realistas. Al asumir insumos y restricciones de problemas deterministas, se ignora la incertidumbre y el dinamismo experimentados en los escenarios de transporte urbano. Los algoritmos simheurísticos persiguen superar estos inconvenientes integrando cualquier tipo de simulación en procesos metaheurísticos con el fin de considerar la incertidumbre inherente en la mayoría de las aplicaciones de la vida real. Esta tesis define e investiga el uso de algoritmos simheurísticos como método adecuado para resolver problemas de optimización que surgen en la logística de ciudades inteligentes. Se aplican algoritmos simheurísticos a una variedad de problemas complejos, incluyendo la recolección de residuos urbanos, problemas de diseño de la cadena de suministro integrada y modelos de transporte innovadores relacionados con la colaboración horizontal entre los socios de la cadena de suministro. Además de las discusiones metodológicas y la comparación de los algoritmos desarrollados con los de referencia de la bibliografía académica, se muestra la aplicabilidad y la eficiencia de los algoritmos simheurísticos en diferentes estudios de casos a gran escala.
Smart city logistics are a crucial factor in the creation of efficient and sustainable urban transportation systems. Among other factors, they focus on incorporating real-time data and creating collaborative business models in urban freight transportation concepts, whilst also considering rising urban population numbers, increasingly complex customer demands, and highly competitive markets. This allows transportation planners to minimize the monetary and environmental costs of freight transportation in metropolitan areas. Many decision-making problems faced in this context can be formulated as combinatorial optimization problems. While different exact solving approaches exist to find optimal solutions to such problems, their complexity and size, in addition to the need for instantaneous decision-making regarding vehicle routing, scheduling, or facility location, make such methodologies inapplicable in practice. Due to their ability to find pseudo-optimal solutions in almost real time, metaheuristic algorithms have received increasing attention from researchers and practitioners as efficient and reliable alternatives in solving numerous optimization problems in the creation of smart city logistics. Despite their success, traditional metaheuristic techniques fail to fully represent the complexity of most realistic systems. By assuming deterministic problem inputs and constraints, the uncertainty and dynamism experienced in urban transportation scenarios are left unaccounted for. Simheuristic frameworks try to overcome these drawbacks by integrating any type of simulation into metaheuristic-driven processes to account for the inherent uncertainty in most real-life applications. This thesis defines and investigates the use of simheuristics as a method of first resort for solving optimization problems arising in smart city logistics concepts. Simheuristic algorithms are applied to a range of complex problem settings including urban waste collection, integrated supply chain design, and innovative transportation models related to horizontal collaboration among supply chain partners. In addition to methodological discussions and the comparison of developed algorithms to state-of-the-art benchmarks found in the academic literature, the applicability and efficiency of simheuristic frameworks in different large-scaled case studies are shown.
Burton, Bennet A. Nordin Andrew E. "Analysis of the Oklahoma City Air Logistics Centers's (ALC) contract management processes." Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FBurton%5FMBA.pdf.
Повний текст джерелаAdvisor(s): Rendon, Rene ; Petross, Diana. "December 2007." "MBA professional report"--Cover. Description based on title screen as viewed on January 10, 2008. Includes bibliographical references (p. 85-87). Also available in print.
Burton, Bennet A., and Andrew E. Nordin. "Analysis of the Oklahoma City Air Logistics Centers's (ALC) contract management processes." Monterey, California. Naval Postgraduate School, 2007. http://hdl.handle.net/10945/10187.
Повний текст джерелаThis paper assesses the process capabilities and competencies of Air Force Material Command's (AFMC) Air Logistics Center (ALC) at Tinker AFB, OK. The assessment uses a cross-sectional questionnaire covering contracting processes and procedures. The purpose of this study is to analyze the ALCs contracting processes and procedures to better establish a baseline for contract management maturity. Using the Contract Management Maturity Model (CMMM) and its assessment tool, this model will be used to identify the ALC's weak as well as strong contract management processes, and provide recommendations for improving the maturity of these processes. Additionally, the Learning Organization Assessment model is used to determine which characteristics of a learning organization the ALC possess. The results of these assessments will be used to determine any correlation between the two models and recommend areas for organizational improvement.
Merkel, Pontus. "Efficient city logistics : Can travel patterns of goods and people be intertwined?" Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-107044.
Повний текст джерелаGrzybwska, Hanna. "Combination of vehicle routing models and dynamic traffic simulation for city logistics applications." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/125067.
Повний текст джерелаLa red urbana es un sistema altamente dinámico. Por lo tanto, la gestión moderna y eficiente de la flota en las zonas urbanas debe tener en cuenta la dinámica de las condiciones del tráfico, la variabilidad en los tiempos de viaje y los cambios en la disponibilidad de la demanda y de la flota, ya que afectan de manera significativa en la distribución de bienes y la prestación de servicios. Como consecuencia, los enfoques para optimizar las operaciones de carga deben basarse en las estimaciones de los tiempos de viaje dependientes del tiempo y no en los valores medios estáticos comúnmente empleados como datos de entrada. Las decisiones competentes de gestión dinámica de las flotas necesitan tener en cuenta todos los factores que condicionan el problema abordado. Por lo tanto, hay que considerar las características de las peticiones y las condiciones de servicio de los clientes (demanda, ventanas de tiempo, etc.), las condiciones operacionales de la flota empleada (disponibilidad de los vehículos, estatus, ubicación, ocupación actual del espacio de transporte, etc.) y las condiciones de tráfico. Esta información puede ser proporcionada en tiempo real a un precio asequible por las aplicaciones de las TIC y herramientas tales como: ATIS, GPS, GPRS u otros. En lugar de confiar exclusivamente en la experiencia de un distribuidor, también sería correcto basar las decisiones de gestión de transporte de mercancías en la información proporcionada por un sistema profesional de apoyo a la toma de decisiones que facilita la consideración de todos los factores que condicionan el problema abordado. El objetivo de esta tesis es proponer, implementar y validar computacionalmente en base a la simulación, la arquitectura de un Sistema de Apoyo a la Toma de Decisiones para la gestión de transporte de mercancías en tiempo real capaz de considerar todos los factores dinámicos previamente mencionados. Su diseño se basa en la integración de un modelo seleccionado de rutas de vehículos con recogida y entrega y modelos de simulación de tráfico dinámicos cuyo propósito es emular detalladamente las condiciones de tráfico que cambian con el paso del tiempo. Las rutas y los horarios dinámicos óptimos para una flota de vehículos que transporta mercancías se obtienen de las modificaciones dinámicas de un plan actual de rutas y horarios en base a la nueva información recibida que condiciona el problema abordado. Los resultados obtenidos de los experimentos computacionales demuestran que el rendimiento de la flota de transporte de mercancías depende en gran medida de la información de tráfico utilizada para crear el plan de rutas y los horarios. Debido al carácter especial de las operaciones de transporte realizadas en las áreas metropolitanas, a pesar de una solución inicial factible que se crea sobre la base de los datos históricos de los tiempos de viaje, es posible que no todos los clientes sean servidos. Por lo tanto, hay una necesidad de implementar estrategias de cambios de rutas en tiempo real, que permiten modificar las rutas originales con el fin de cumplir las tareas de enrutamiento viables. Además, más estrictas son las limitaciones que especifican las ventanas del tiempo de los clientes y más alto es el número de solicitudes de servicio que aparecen de forma dinámica, mayor será el coste final de las prestaciones del servicio y el nivel de utilización de la flota de transporte de mercancías.
Johansson, Henrik. "Urban Consolidation Centres : On Relationships between Customer Needs and Services in City Logistics." Licentiate thesis, Linköpings universitet, Logistik- och kvalitetsutveckling, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144225.
Повний текст джерелаI den tryckta versionen är det ena serienamnet felaktigt. I den elektroniska versionen är detta ändrat till korrekt: "Linköping studies in Science and Technology. Licentiate Thesis"
Limpattanasiri, Wisit. "MAXIMAL COVERING LOCATION MODELS OF EMERGENCY AMBULANCE CONSIDERING HEAVY TRAFFIC CONGESTION IN URBAN AREAS." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180486.
Повний текст джерелаJamshidi, Farzad, and Farzad Jamshidi. "Advanced decision making in sustainable city logistics projects : criteria and, risk identification and assessment." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/38087.
Повний текст джерелаLes villes sont les lieux de la plus grande concentration d'activités sociales et économiques. La logistique est l'une des plus importants éléments de la durabilité et de l'économie d’une la ville. Pour la logistique urbaine, il est nécessaire de prendre en compte les caractéristiques de la ville et les objectifs de toutes les parties prenantes (expéditeurs, destinataires, transporteurs, prestataires de services logistiques, résidents, gouvernement de la ville). Les plans de logistique urbaine durable pourraient avoir un impact significatif sur la qualité de la vie en milieu urbain. L'évaluation d'initiatives de logistique de ville durable (SCLI) telles que les centres de distribution urbains, la tarification de la congestion, le délai de livraison et les restrictions d'accès est un problème complexe, car plusieurs critères et contraintes subjectifs et objectifs doivent être pris en compte. Les administrations municipales investissent dans des initiatives de logistique urbaine durable telles que les centres de distribution urbains, la tarification de la congestion, le calendrier de livraison et les restrictions d'accès afin d'améliorer les conditions de transport de marchandises dans les villes et de réduire leurs impacts négatifs sur les citoyens et leur environnement. Cependant, il y a toujours des risques dynamiques associés à la sélection. L’analyse des risques des initiatives de logistique urbaine est une tâche complexe en raison de la multiplicité des facteurs de risque et de leurs dépendances. Bien qu'il n'y ait pas beaucoup d'études sur les risques liés à la logistique urbaine, aucune attention n'a été portée à l'analyse des risques liés à la logistique urbaine en prenant en compte les dépendances entre les facteurs de risque et leurs critères. Considérer les dépendances entre les facteurs de risque pourrait conduire à une analyse plus précise des risques et augmenter le taux de réussite de la sélection des initiatives de logistique urbaine. Méthodes: pour résoudre ce problème, nous proposons un outil avancé d'aide à la décision appelé «cartescognitives floues» (FCM), capable de gérer les risques associés à des systèmes aussi complexes. La FCM représente avec précision le comportement de systèmes complexes et peut prendre en compte les incertitudes, les informations imprécises, les interactions entre les facteurs de risque, la rareté de l'information et les opinions de plusieurs décideurs. En outre, il pourrait être appliqué à différents problèmes de prise de décision liés aux initiatives de logistique de ville durable (SCLI). Par conséquent, l'outil proposé aiderait les praticiens à gérer les risques liés à la logistique urbaine d'une manière plus efficace et proactive et offrirait de meilleures solutions d'atténuation des risques. Dans les études précédentes, les méthodes de décision multicritères étaient principalement utilisées pour l'évaluation, la comparaison et la sélection d'initiatives logistiques de villes en fonction des effets obtenus ou prévus résultant de leur introduction dans divers environnements urbains. Afin d'évaluer l'adéquation des solutions conceptuelles aux exigences des différentes parties prenantes et conformément aux attributs spécifiques de l'environnement urbain, il convient de définir des solutions conceptuelles associant différentes initiatives de logistique urbaine en utilisant un processus artificiel; outils de renseignement, y compris la FCM.
The cities are the places of the largest concentration of social activities and economic. Logistics is one of the most important for the sustainability and the economy of the city. Inselecting the city logistics concept, it is necessary to consider the characteristics of the city and the goals of all the stakeholders (shippers, receivers, carriers, logistics service providers, residents, city government). Sustainable city logistics (SCL) plans could significantly affect the quality of life in the urban environment. Evaluating sustainable city logistics initiatives (SCLI) such as urban distribution centres, congestion pricing, delivery timing and access restrictions is a complex problem since several subjective and objective criteria and constraints should be considered. Municipal administrations are investing in sustainable city logistics initiatives (SCLI) such as urban distribution centres, congestion pricing, delivery timing and access restrictions in order to improve the condition of goods transport in cities and reduce their negative impacts on citizens and their environment. However, there is always some dynamic risks associated that should be selected. Risk analysis of sustainable city logistics initiatives is a complex task due to consisting of many risk factors with dependencies among them. Although there are no lots of studies on sustainable city logistics risks, no attention has been paid to the risk analysis of sustainable city logistics by considering the dependencies among risk factors and their criteria. Considering the dependencies among risk factors could lead to more precise risks analysis and increase the success rate of selecting sustainable city logistics initiatives. Methods: To address this, we are proposing an advanced decision support tool called "Fuzzy Cognitive Maps" (FCM) which can deal with risks of such complicated systems. FCM represents the behaviour of complex systems accurately and is able to consider uncertainties, imprecise information, the interactions between risk factors, information scarcity, and several decision maker's opinions. In addition, it could be applied to different decision makings problems related to sustainable city logistics initiatives (SCLI). Therefore, the proposed tool would help practitioners to manage sustainable city logistics risks in a more effective and proactive way and offer better risk mitigation solutions. In previous studies, multi-criteriadecision-making methods are mainly used for the evaluation, comparison and selection of individual sustainable city logistics initiatives in relation to the achieved or planned effects resulting from their introduction in various urban environments. In order to assess the suitability of the conceptual solutions to the requirements of different stakeholders, and in accordance with the specific attributes of the urban environment, there is the definition of conceptual solutions that combine different sustainable city logistics initiatives by using an artificial; intelligence tools including FCM.
The cities are the places of the largest concentration of social activities and economic. Logistics is one of the most important for the sustainability and the economy of the city. Inselecting the city logistics concept, it is necessary to consider the characteristics of the city and the goals of all the stakeholders (shippers, receivers, carriers, logistics service providers, residents, city government). Sustainable city logistics (SCL) plans could significantly affect the quality of life in the urban environment. Evaluating sustainable city logistics initiatives (SCLI) such as urban distribution centres, congestion pricing, delivery timing and access restrictions is a complex problem since several subjective and objective criteria and constraints should be considered. Municipal administrations are investing in sustainable city logistics initiatives (SCLI) such as urban distribution centres, congestion pricing, delivery timing and access restrictions in order to improve the condition of goods transport in cities and reduce their negative impacts on citizens and their environment. However, there is always some dynamic risks associated that should be selected. Risk analysis of sustainable city logistics initiatives is a complex task due to consisting of many risk factors with dependencies among them. Although there are no lots of studies on sustainable city logistics risks, no attention has been paid to the risk analysis of sustainable city logistics by considering the dependencies among risk factors and their criteria. Considering the dependencies among risk factors could lead to more precise risks analysis and increase the success rate of selecting sustainable city logistics initiatives. Methods: To address this, we are proposing an advanced decision support tool called "Fuzzy Cognitive Maps" (FCM) which can deal with risks of such complicated systems. FCM represents the behaviour of complex systems accurately and is able to consider uncertainties, imprecise information, the interactions between risk factors, information scarcity, and several decision maker's opinions. In addition, it could be applied to different decision makings problems related to sustainable city logistics initiatives (SCLI). Therefore, the proposed tool would help practitioners to manage sustainable city logistics risks in a more effective and proactive way and offer better risk mitigation solutions. In previous studies, multi-criteriadecision-making methods are mainly used for the evaluation, comparison and selection of individual sustainable city logistics initiatives in relation to the achieved or planned effects resulting from their introduction in various urban environments. In order to assess the suitability of the conceptual solutions to the requirements of different stakeholders, and in accordance with the specific attributes of the urban environment, there is the definition of conceptual solutions that combine different sustainable city logistics initiatives by using an artificial; intelligence tools including FCM.
LAGORIO, ALEXANDRA. "Three essays on urban freight transport: models and tools for effective city logistics projects." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1227784.
Повний текст джерелаThe main purpose of these three years of research, summarized in this thesis, was to investigate the obstacles to the development of the city logistics initiatives by seeking solutions to overcome them through model and framework coming from management and transportation engineering. In particular, following a first analysis of a collection of European projects and a systematic analysis of scientific literature, three main gaps in city logistics have been identified: the lack of the stakeholders’ involvement, the need for data sharing platforms to overcome the current lack of data and the need to define city logistics solutions within the urban ecosystem, making consistent design choices coherently with what is already existing in terms of infrastructures, rules and stakeholders in the context. From these three gaps, three main research questions have arisen: (RQ1) Is it possible to support stakeholders in analysing CL solutions fitting their necessities applying some already existing and consolidate decision-making methods? (RQ2) Is it possible to define a database platform in which it is possible to collect, consult and update as many existing data as possible regarding urban freight transport? (RQ3) How is it possible to optimize city logistics infrastructures in a harmonious and coherent way with respect to the entire city logistics ecosystem? To answers to the research questions, a collection of articles is illustrated in this thesis work. From time to time different methodologies are used and illustrated, derived from the field of management and transport engineering, these different methodologies, such as the Systematic Literature Review, the House of Quality, a framework for building a data sharing platform, the city logistics Ecosystem and a decision-making support model (based on both a covering model and a Monte Carlo simulation) are described in detail in the various chapters of the thesis. In this dissertation work for the first time, the main obstacles to the development of city logistics initiatives, that are the lack of involvement of stakeholders, the lack of data, and the lack of an ecosystem vision of urban transport, have been identified and addressed at the same time. Even if literature sometimes offers some possible solutions to these gaps, few are simple to understand for those who work in the urban freight transport industry, easy to apply and replicable. Both in identifying the gap and in seeking solutions, the solutions showed in this thesis sought to address to those who work in the industry, mainly carriers, retailers, shop owners and public administration representatives, trying to combine scientific research with the search for solutions that can be implemented in practice as requested by such a practical research topic. For this reason, each proposed solution and methodology in this thesis has been implemented and experimented using as a case study the city of Bergamo (and testing its replicability in other European cities such as Saint-Etienne, Luxemburg and Amsterdam). In particular, the initial experience in the “Bergamo Logistica” project, part of the Bergamo 2.035 smart city research program, gave me the opportunity to understand the main critical issues found by the main actors who work in this field (i.e., carriers, couriers, retailers and institutions), to confirm some evidences that I found in the theory (i.e., main research gaps which originates the research questions) and to search for solutions that could both solve research gaps and optimize the daily logistics activities of the operators.
Engberg, Lovisa. "Analys och optimering av godsflöden i Linköpings city." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78938.
Повний текст джерелаUrbanization and city expansion result in an increasing need of transportation of goods, and in order to maintain efficiency, measures are needed. The aim of city logistics is to minimize negative impacts associated with city center goods distribution, such as traffic congestion and negative impacts on the living environment. Several city logistic measures have previously been suggested, such as freight consolidation, governance and advanced IT systems. Within the SAMLIC project started in 2004, a demonstration project known as PILOT was carried out in central Linköping, wherein the concept of freight consolidation was applied in reality. The objective was to evaluate the economic potential of freight consolidation. The aim of this thesis was to formulate mathematical models of the distribution of goods in a medium sized Swedish city. The models are to be used in the evaluation of city logistic measures, focusing on freight consolidation. The distribution problem is modelled as a vehicle routing problem, and methods for solving the resulting optimization problems have been implemented. Using data from PILOT, the models have been applied on Linköping with the purpose of evaluating the methods, as well as investigating the potential of using models for planning the distribution of goods. Conclusions involve that analyses of, and comparisons between, city lo-gistic measures can be efficiently made using mathematical models. The case study also indicates that goods distribution can be improved through the use of optimization methods, which further motivates mathematical modelling.
Bando, Daniel Hideki. "Padrões espaciais do suicídio na cidade de São Paulo e seus correlatos socioeconômico-culturais." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/8/8135/tde-18122008-103427/.
Повний текст джерелаThe present study aims to analyse the space patterns of suicide occurence in the city of São Paulo, in the period from 1996 to 2005, and check its association with the socioeconomic-cultural variables (marital status, income, education, religion, migration). The choice of the analytical variables was based on the suicide risk factors lifted by the WHO and OPAS, and in the Durkheim´s suicide theory. The socioeconomic data used were originated from the IBGE and the mortality data from the PRO-AIM. The spatial scan test was applied to identify space patterns of suicide rates. In order to check the association with the socioeconomic-cultural variables, the logistic regression analysis was used. In the studied period, 4275 suicide deaths took place in the city of São Paulo, with a mean rate of 4,1/100 thousand inhabitant/year. The first spatial scan test, considering 50% of the total population as the maximum cluster size, identified 2 significant clusters, one of risk (RR = 1,66) composed by 18 districts of the central region, south-center and western-center of the city (Alto de Pinheiros, Barra Funda, Bela Vista, Bom Retiro, Brás, Cambuci, Consolação, Itaim Bibi, Jardim Paulista, Liberdade, Moema, Morumbi, Pinheiros, Perdizes, República, Santa Cecília, Sé, Vila Mariana) and one of protection (RR = 0,78) formed by 14 districts of the south region (Campo Grande, Campo Limpo, Capão Redondo, Cidade Ademar, Cidade Dutra, Grajaú, Jardim Ângela, Jardim São Luís, Santo Amaro, Socorro, Pedreira, Raposo Tavares, Vila Andrade, Vila Sônia). The test considering 5% of the total population as the maximum cluster size, found 2 significant clusters. In this test, the risk cluster of the first test was dismembered in two minor clusters, both of risk. The primary cluster presented RR = 1,92 in 9 central districts the secondary cluster RR = 1,58 in 6 districts of the south-centre. To the logistic regression analysis, the risk cluster identified in the first spatial scan test (18 districts) and the others 78 districts (contrast) were defined as dependent variables and the socioeconomic-cultural variables as independent. The first adjusted model in the multivaried regression identified these variables like risk: singles (OR = 2,36); migrant (OR = 1,49); catholics (OR = 1,36); high income (OR = 1,05). The second multivaried model identified these variables like protection: married (OR = 0,48); evangelic (0,60). The results can be explained by the literature risk factors, the Durkheim´s theory well-adjusted for the reality of São Paulo and by the difference between suicide and homicide.
Guedria, Mohamed. "Modélisation et évaluation des livraisons urbaines à base de petits véhicules." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0206/document.
Повний текст джерелаThe VRP makes it possible to model the problem of TMV. However, in its most simplistic version it cannot be adapted to the new constraints which reinforce the complexity of the urban environment such as congestion. This is why this work is placed first on a TDVRP (Time-dependent-Vehicle-Routing-Problem) in order to best represent the current urban context. The resolution of these two problems is effective; resulting in a reduction in the number of additional vehicles needed due to congestion delays can be eliminated. But this solution is not without consequences for end customers since its goal is to avoid the switch to peak hours and this can lead to delivery delays. For this reason we want to propose a new solution that solves the problem of the shortest path and integrating time dependency (TDVRP). This solution relies on better operation of vehicles, in the first place, to reduce the number of vehicles on the road. This problem is called MT-VRP (Multi-Trip VRP) which was raised in 2007 by (Azi, et al. 2007). In a second step we want to propose a MT VRP that uses different types of vehicle in terms of loading capacity. In this perspective comes our work that proposes a new solution of MTTDVRP (TW with time windows) by testing a new solution using a light vehicle of low load capacity (tricycle type) in order to reduce the nuisance associated with TMV
Thorsell, André, and Johan Sjöstrand. "Färjornas betydelse : En undersökning om vilken betydelse färjetrafiken har för medelstora städer." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-64366.
Повний текст джерелаTo travel by ferry in Sweden is very popular, both for pleasure and as a means of transport. Whatever reason you have for travelling by ferry, you often have to travel through a city to arrive at the ferry terminal. The purpose of this essay is to investigate in what ways the cities benefit by their ferry lines and terminals. By making our own investigation, containing passenger surveys and interviews with carefully chosen persons in these specific areas, it was possible to analyze how and if the cities benefit by their ferries. The result of this investigation shows that the passengers’ consumption, when they travel through the cities, is negligible. Considering the revenue of the trade and industry, this consumption is very small. If the ferry terminal had been closed down in some of the investigated cities the loss of revenue in a grocery store that participated in the survey would have been so small that the company would have had a hard time figuring out that the loss was because of the closure of the terminal. The survey however showed that the ferry lines and their terminals contributed in other ways to the cities, for example through the fairway fee and the cities’ reputation.
Fröjd, Anna. "Energi- och miljövinster med ett bygglogistikcenter i Norra Djurgårdsstaden : Förslag på metod för utvärdering." Thesis, KTH, Industriell ekologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-161749.
Повний текст джерелаIn the eastern part of Stockholm a major urban development project is taking place. It is called Stockholm Royal Seaport and until the year 2030 approximately 12,000 new homes, 35,000 workplaces and 600,000 square meters of commercial areas will be added to the area. The project has been given a very ambitious environmental action program and as a part of that the City of Stockholm has established a logistics center in the area. The logistics center is supposed to coordinate all transports of building material and handle the waste during the construction phase. One objective with the logistics center is to reduce the amount of transports and thereby also the generated emissions and the use of energy. The aim of this thesis has been to develop a methodology for evaluating the potential environmental impacts related to the logistics center in the Stockholm Royal Seaport. The evaluation method is able to compare the effect, from a life cycle perspective, from construction transports in two different scenarios, scenario 1 where there is a logistics center and scenario 2 where there is not. The chosen parameters are CO2, NOx, SO2, particulate matter and energy usage. Two different tools for computing values for the chosen parameters have been compared and the selected one is developed by NTM, the Network for Transport Measures. After the selection an investigation of input data required to use the tool was performed. A number of interviews were conducted and a workshop was organized with various representatives, mainly people working with construction or transportation in the Stockholm Royal Seaport. The things discussed during the interviews and the workshop were, among other things, the availability of required data, the interviewees opinions about the logistics center and their suggestions for improvements that can be done, both at the center itself, but also for example in the procurement process. Another purpose for the interviews and the workshop was to anchor the methodology with the various representatives. A direct result from the interviews and the workshop has been some proposals for improvement, for example that requirements in the procurement process should be presented at an early stage to be able to be as effective as possible. Some of the interviewees pointed out that logistic issues are highlighted simply by the existence of the logistics center. There are a couple of different transport routes within the area, as some deliveries are allowed directly into the construction sites, whereas some have to pass the logistics center to unload the freight, all depending on the amount of freight to a specific site. Staff at the logistics center will then consolidate the deliveries to the construction sites into one vehicle. They also collect the generated waste, which they handle at the center before it is transported to an external retrieval plant. The logistics center also utilizes a vehicle used for inspections of the traffic and deliveries within the area. All of the above mentioned types of transportations are included in the thesis. An evaluation of the effects of the logistics center requires data about all types of transportation, within three different categories: the vehicle, the load and the actual route. Since all required data is not available today some assumptions have to be made, how many and which depends on the requested accuracy of the evaluation and when it is to be performed. If an evaluation is to be performed given the current conditions it is recommended that a number of manual measurements are carried out to collect data which was not available at the time being, however, if evaluations are to be done continuously it is suggested that the retrieval of data is as automated as possible. It is also recommended to do a sensitivity analysis of the data retrieved from the measurements to assess the impact from certain data on the chosen parameters. The amount of impact helps determine which data to refine in order to increase the accuracy of the evaluation. Depending on what the analysis shows the thesis gives suggestions for actions such as installing cameras at gates to the construction sites and/or the logistics center or to install computers in vehicles to obtain data on driving behavior.
Gustafsson, Victor. "Optimering av körvägar med hjälp avruttplanerings- och handelsresandemetoder : En fallstudie hos Gotland Recycling." Thesis, Högskolan i Gävle, Industriell ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35452.
Повний текст джерелаThe aim with this paper was to study how different kinds of heuristics for the routeplanning and traveling salesman’s problem could affect the route, potentially decreasethe driving costs and make it easier for companies and vehicles to plan their routes. Toinvestigate how different heuristics can affect the route planning, observations andinterviews has been made in a company named Gotland Recycling. Gotland Recyclingis a recycling company which operate on the island Gotland. Today the company has500 customers per year and owns four truck vehicles. The company has understood thatfor a long time their route planning system can be improved and has taken an interest intesting new methods to improve their own route planning and validate the methodswhich they are already using for route planning and driving. To analyze the differentroutes Google Maps and Excel was used. With the help of Google Maps and Excel costsin the form of driving length in meter and kilometer has been produced by applying thechosen algorithms on different driving areas. With the help of Google Maps and Excel,the driving pattern has been charted and registered in different tables. Differentalgorithms have then been applied to construct new routes and measure their mileage.Theory in the form of literature and articles has been collected for this study to analyzeand compare different strengths and weaknesses of different route planning andtraveling salesman problem solving methods. The result from this study shows there is apotential for different solution methods to make the mileage smaller. Different solvingmethods had different qualifications, strengths and weaknesses which depended on thesituations which they were applied. In two of the three tests which were made thechosen solving methods produced routes which were shorter than the route produced bythe company. Both testing and the literature also showed that for some situations thereare so many random obstacles in driving areas which make it meaningless to apply anytype of route-planning method and more advanced systems are required.
Fossum, Heidi. "Coordinated freight logistics in existing city districts- Evaluation of methods for calculating energy and environmental effects." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-84166.
Повний текст джерелаNorra Djurgårdsstaden är det största pågående byggprojektet i Sverige och är planerat att slutföras under 2030. Stadsdelen ligger i nordöstra Stockholm, i ett före detta industriområde där cirka 12 000 nya bostäder och 35 000 arbetsplatser är planerade att byggas. Stadsdelen har ett starkt fokus på att minska miljöeffekterna och påverkan av energianvändningen. En av idéerna för att uppfylla detta är att införa samordnad varulogistik. Detta kan göras genom att bygga ett logistikcenter där gods från olika logistikföretag och godstransportörer kan lastas på samma leveransfordon och sedan levereras inom samma område i Norra Djurgårdsstaden. Syftet med detta examensarbete är att utvärdera fem tidigare utvärderingsrapporter om logistikcenter. Med hjälp av dessa utvärderingsrapporter och annan litteratur ges det förslag på hur ett projekt inom samordnad varulogistik kan organiseras i Norra Djurgårdsstaden och hur miljöpåverkan och energiförbrukning från leveransfordonen kan beräknas. Utvärderingsrapporterna kommer från logistikcentret i Gamla Stan i Stockholm, pilotprojektet Samlic i Linköping, logistikcentret i Norwich, mikro-logistikcentret i London och olika logistikmetoder i Utrecht. En noggrann jämförande analys av de fem olika utvärderingsrapporterna har undersökt initiativtagare och intressenter, leveranssituationerna före och efter uppförandet av logistikcentren samt gjort en fördjupad utvärderingsanalys av samtliga utvärderingsrapporter. Den jämförande analysen visar att införandet av logistikcenter har haft en positiv effekt för att minska antalet leveransfordon i stadsdelen och därmed inneburit minskade utsläpp och lägre energianvändning för leveransfordonen. Baserad på den komparativa analysen och annan litteratur föreslås det att initiativet i Norra Djurgårdsstaden måste komma från Stockholms stad. Intressenterna bör vara Stockholms Stad, logistikföretag, godstransportörer, de olika företagen i området och Stockholms Hamnar. För att få fler företag att använda logistikcentret samt att få miljövänligare leveransfordon i stadsdelen kan det vara nödvändigt att använda flera styrmedel. Exempel på styrmedel är miljözoner, tidsfönster och att införa olika begränsningar på leveransfordon. Det är väsentligt att samla information om leveransfordonen i stadsdelen för att beräkna utsläpp och energianvändning. Insamlingen av data från leveransfordon kan hämtas från fraktsedlar, fakturaunderlag eller statistik över antalet fordon som har levererat varor i stadsdelen från frakt-och logistikföretag. Då kan miljö- och energieffekterna från leveransfordonen beräknas med dataverktyget Nätverket för transporter och miljö (NTM-metoden).
Scherr, Yannick Oskar Verfasser], Dirk C. [Akademischer Betreuer] [Mattfeld, Bernhard [Akademischer Betreuer] Friedrich, and Mike [Akademischer Betreuer] Hewitt. "Mixed Autonomous Fleets in City Logistics / Yannick Oskar Scherr ; Dirk C. Mattfeld, Bernhard Friedrich, Mike Hewitt." Braunschweig : Technische Universität Braunschweig, 2021. http://d-nb.info/1229615628/34.
Повний текст джерелаHemmelmayr, Vera, Jean Francois Cordeau, and Teodor Gabriel Crainic. "An adaptive large neighborhood search heuristic for Two-Echelon Vehicle Routing Problems arising in city logistics." Elsevier, 2012. http://dx.doi.org/10.1016/j.cor.2012.04.007.
Повний текст джерелаKršák, Martin. "Optimalizace procesů v logistice s podporou vizualizace." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403163.
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