Academic literature on the topic 'City logistics challenges'

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Journal articles on the topic "City logistics challenges"

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Taniguchi, Eiichi, Russell G. Thompson, and Tadashi Yamada. "New Opportunities and Challenges for City Logistics." Transportation Research Procedia 12 (2016): 5–13. http://dx.doi.org/10.1016/j.trpro.2016.02.004.

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Jurczak, Marcin. "LOCAL STRATEGIES FOR GLOBAL CHALLENGES IN CITY LOGISTICS." PRACE NAUKOWE UNIWERSYTETU EKONOMICZNEGO WE WROCŁAWIU, no. 505 (2018): 453–60. http://dx.doi.org/10.15611/pn.2018.505.34.

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Savelsbergh, Martin, and Tom Van Woensel. "50th Anniversary Invited Article—City Logistics: Challenges and Opportunities." Transportation Science 50, no. 2 (May 2016): 579–90. http://dx.doi.org/10.1287/trsc.2016.0675.

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Arvianto, Ary, Bertha Maya Sopha, Anna Maria Sri Asih, and Muhammad Ali Imron. "City logistics challenges and innovative solutions in developed and developing economies: A systematic literature review." International Journal of Engineering Business Management 13 (January 1, 2021): 184797902110397. http://dx.doi.org/10.1177/18479790211039723.

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Varying characteristics of developed and developing countries have resulted in different challenges and innovative solutions of city logistics. This study aimed to identify research clusters on city logistics between developed and developing economies and to systematically compare city logistics challenges and associated innovative solutions for both economies. Bibliometric analysis and a systematic literature review were applied to analyze 328 peer-reviewed publications, comprising 229 (70%) and 99 (30%) articles addressing case studies in developed and developing economies, respectively. We discovered six research clusters in city logistics literature for developed countries, compared with only four for developing economies in which public policy has not been addressed. Urban growth, environmental challenges, and traffic congestion are the three major city logistics challenges in both types of economies. Furthermore, fleet increment and inadequate loading/unloading spaces are the city logistics challenges analyzed in the literature on developing countries compared with the literature on developed economies that addresses the challenges of education deficiency, regulation, emergence of new business models, and network accessibility and capacity. Consequently, innovative solutions adopted by developed countries demonstrate varied processes involving technology, policy (including public policy and sustainability measures), infrastructure, and economic measures, while for developing countries, the focus remains on effective and efficient distribution operations using optimization and collaboration efforts.
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Wolpert, Stefan, and Carsten Reuter. "Status Quo of City Logistics in Scientific Literature." Transportation Research Record: Journal of the Transportation Research Board 2269, no. 1 (January 2012): 110–16. http://dx.doi.org/10.3141/2269-13.

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Roadway infrastructure is reaching maximum capacity in urban areas because of expanding urbanization, demographic changes, and continuously increasing freight volumes. An overview of the latest research on city logistics is needed to address these challenges, and a review of the scientific literature is presented. A specifically designed framework for systematic literature review was used to analyze 92 relevant articles from prominent electronic databases. A taxonomy of city logistics literature was created to aid academics and practitioners and to stimulate interest of other parties in this area.
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Özbekler, T. M., and A. Karaman Akgül. "LAST MILE LOGISTICS IN THE FRAMEWORK OF SMART CITIES: A TYPOLOGY OF CITY LOGISTICS SCHEMES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIV-4/W3-2020 (November 23, 2020): 335–37. http://dx.doi.org/10.5194/isprs-archives-xliv-4-w3-2020-335-2020.

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Abstract. As current cities are attributed to particular dynamism consists of population density and increased urbanization, urban areas are facing some challenges for city logistics, both in terms of economic, environmental, and social impact. Especially, the debates over last-mile logistics are arising with inefficiencies in delivery cost (half truckload on delivery) and delivery time per parcel (unnecessary waiting-load periods at multiple stops) while inner-urban areas are especially suffered from traffic congestion, emission, and noise pollution. In this regard, smart cities as a concept with the potential to produce sustainable solutions to urban problems bring along with the need for innovative urban logistics systems to make conventional distribution channels of the city up to date. The key objective tackled in this paper can be defined as the identification of the city logistics schemes with highlighting current approaches in smart cities. The study adopts a systemic approach based on the typology of consolidation-distribution schemes in city logistics to define the feasibility of micro logistics initiatives from the scope of the smart city consisting of mobility, sustainability, and liveability. Thanks to a detailed examination of city logistics dynamics, this study can contribute theoretically to smart city logistics literature as well as practically the logistics sector.
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Rubio, Sergio, Beatriz Jiménez-Parra, Antonio Chamorro-Mera, and Francisco J. Miranda. "Reverse Logistics and Urban Logistics: Making a Link." Sustainability 11, no. 20 (October 15, 2019): 5684. http://dx.doi.org/10.3390/su11205684.

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This work is aimed at analyzing potential links between reverse logistics and urban logistics and describing opportunities for collaboration between both areas of research. A description of the current state-of-the-art is provided in order to highlight the main challenges faced by both disciplines. For example, regarding reverse logistics, new recovery options, marketing strategies for recovered products, and legislation issues on the return of products in specific contexts; in regards to urban logistics, long-term planning, stakeholders’ engagement, information management, efficiency, reliability and safety, and new business models are some of such key challenges. Despite the growing interest shown in both logistics areas and their relevance for companies and consumers, reverse logistics and urban logistics are two concepts that are still somewhat unknown and, above all, treated as being relatively separated. However, there exist some aspects where the two disciplines converge and that may represent opportunities for collaboration, for example, the proper treatment and management of urban waste, and the efficient management of commercial refunds and returns. In addition, other key issues, such as land use, city typology, infrastructures, and stakeholders’ engagement should be further analyzed in order to keep advancing in the description of links between both areas.
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Ros-McDonnell, Lorenzo, María Victoria De-la-Fuente-Aragon, Diego Ros-McDonnell, and Manuel Cardós Carboneras. "Designing an Environmental Zone in a Mediterranean City to Support City Logistics." International Journal of Production Management and Engineering 6, no. 1 (January 31, 2018): 1. http://dx.doi.org/10.4995/ijpme.2018.8771.

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<p>European cities are facing enormous challenges in accessibility and livability terms due to several European directives, which are compulsory in the mid/long term, traffic congestion levels are still increasing, and air pollution and noise disturbs citizens’ lives. This work presents the study carried out in a Mediterranean city to define an Environmental Zone with traffic restrictions for vehicles in the historical centre of the city of Cartagena (Spain) by exploring different urban logistics measures to tackle main problems caused by freight deliveries and pickups in the city centre. These solutions aimed to enhance the efficiency of vehicles, and to reduce both traffic congestion the environmental impacts caused by freight delivery in the city in order to improve urban sustainability.</p>
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Sundarakani, Balan. "Transforming Dubai Logistics Corridor into a Global Logistics Hub." Asian Journal of Management Cases 14, no. 2 (September 2017): 115–36. http://dx.doi.org/10.1177/0972820117712303.

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The case discusses the various factors that bolstered positioning Dubai as the ideal location for a logistics hub, located at the crossroads of international trade and commerce between the Eastern and Western worlds. Dubai is also regarded as the gateway to the world’s most progressive markets which include Greater Africa, the Indian subcontinent, and the East European countries. The case illustrates some of the critical challenges faced by the city in particular and the country as a whole, in the past decade, thereby evaluating the issues and risks that can hinder its strategic logistics developmental roadmap. The case can be taken up for subjects such as logistics and supply chain management, operations management, global logistics systems, warehouse management and strategic management, and to enrich concepts related but not limited to facility location strategy, logistics network expansion strategy, country analysis, distribution hub location strategy, etc.
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Cardenas, Ivan, Yari Borbon-Galvez, Thomas Verlinden, Eddy Van de Voorde, Thierry Vanelslander, and Wouter Dewulf. "City logistics, urban goods distribution and last mile delivery and collection." Competition and Regulation in Network Industries 18, no. 1-2 (March 2017): 22–43. http://dx.doi.org/10.1177/1783591717736505.

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Supply chains, logistics and freight have been facing increasingly complex challenges posed by transitions in economic structures, urbanization, city design and transport systems, as well as by the externalities associated with logistics activities in urban areas. This has driven a great deal of research recently. Yet, there are no sufficient contributions clarifying the current state of thought in this field. This article critically reviews the literature highlighting current approaches in the field. The objective of the article is threefold. First, to provide a framework with geographical and functional elements of urban logistics. Second, to identify the scope of the literature, vested into a typology. And third, to define the terms that may embrace the various analytical interests of the urban logistics field, namely city logistics, urban goods distribution and last mile logistics. The aim is to contribute to organize the current and future thought in the field of urban logistics.
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Dissertations / Theses on the topic "City logistics challenges"

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Nordin, 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.

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We have conducted a study that is intended to investigate and understand how logistics companies in city logistics handle increased e-commerce challenges and describe what actions they take. To be able to do that, two question formulations have been formulated that goes: “What challenges, caused by an increased e-commerce, exist for logistics companies within city logistics?” and “What are logistics companies doing to address the challenges that exist and that are caused by increased e-commerce?”. Further is the theoretical frame of references presented where challenges and innovations for logistics companies in city logistics is a central point. We have used a qualitative approach, where semi-structured interviews have been used to get the essential information to be able to analyze towards our theoretical frame of references. Headliners that are found in the theoretical frame of references reappear in both the empirical material and the analysis to get a common thread throughout the study. In the analysis, we have our question formulations as headliners to really analyze challenges and innovations. Our study has contributed to an increased understanding of how logistics companies handle an increased e-commerce challenge and describe what actions they take. We have noted that the increased e-commerce has led to challenges for logistics companies in city logistics. We concluded that e-commerce has become more complex with shorter lead time, more but smaller packages and higher demands from consumers have been added, which is considered a challenge for logistics companies. The study shows the main challenges that increased e-commerce brought. The study also shows various innovations and actions by logistics companies within city logistics.
Vi 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.
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Books on the topic "City logistics challenges"

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City Logistics 1: New Opportunities and Challenges. Wiley-ISTE, 2018.

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Thompson, Russell G., and Eiichi Taniguchi. City Logistics 1: New Opportunities and Challenges. Wiley & Sons, Incorporated, John, 2018.

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Thompson, Russell G., and Eiichi Taniguchi. City Logistics 1: New Opportunities and Challenges. Wiley & Sons, Incorporated, John, 2018.

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Book chapters on the topic "City logistics challenges"

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Widodo, Kuncoro Harto, Danang Parikesit, Hengki Purwoto, Joewono Soemardjito, and Eriadi. "Issues and Challenges in Urban Logistics Planning in Indonesia." In City Logistics 3, 317–27. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119425472.ch18.

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Rodrigues, Maria, Eleni Zampou, Vasilis Zeimpekis, Alexander Stathacopoulos, Tharsis Teoh, and Georgia Ayfantopoulou. "Cooperative Models for Addressing Urban Freight Challenges: The NOVELOG and U-TURN Approaches." In City Logistics 3, 215–34. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119425472.ch12.

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de Oliveira, Leise Kelli, Paulo Renato de Sousa, Paulo Tarso Vilela de Resende, Rafael Barroso de Oliveira, and Renata Lúcia Magalhães de Oliveira. "Viewpoint of Industries, Retailers and Carriers about Urban Freight Transport: Solutions, Challenges and Practices in Brazil." In City Logistics 1, 287–302. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119425519.ch15.

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Imppola, Jorma. "The Challenges of Sustainable Logistics in Finland." In Smart City 360°, 659–70. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-33681-7_57.

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Kant, Pankaj, and Sanjay Gupta. "Sustainable Urban Freight Strategies for Jaipur City, India." In Smart and Sustainable Supply Chain and Logistics – Trends, Challenges, Methods and Best Practices, 153–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61947-3_10.

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Khaliq, Kishwer Abdul, Amir Qayyum, and Jürgen Pannek. "Novel Routing Framework for VANET Considering Challenges for Safety Application in City Logistics." In Advances in Intelligent Systems and Computing, 53–67. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3503-6_5.

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Oleśków-Szłapka, Joanna, Irena Pawłyszyn, Francesco Facchini, Agnieszka Stachowiak, and Ana Paula Tanajura Ellefsen. "Sustainable City Mobility—Comparison of Actual State in Selected European Countries." In Smart and Sustainable Supply Chain and Logistics – Trends, Challenges, Methods and Best Practices, 133–51. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61947-3_9.

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Quak, Hans, and Nina Nesterova. "Towards Zero Emission Urban Logistics: Challenges and Issues for Implementation of Electric Freight Vehicles in City Logistics." In Transport and Sustainability, 265–94. Emerald Group Publishing Limited, 2014. http://dx.doi.org/10.1108/s2044-994120140000006011.

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Frichi, Youness, Abderrahmane Ben Kacem, Fouad Jawab, Oualid Kamach, and Samir Chafik. "Improving Interhospital Medical Patient Transportation in Morocco." In Transportation, Logistics, and Supply Chain Management in Home Healthcare, 136–62. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0268-6.ch008.

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Healthcare facilities are nowadays facing several challenges in terms of quality of care, costs, and performance. Collaboration with stakeholders is a promising way to overcome these challenges. In Morocco, healthcare access and continuity of care remain difficult due, among others, to the various stakeholders involved and the lack of ambulances for extra-hospital and interhospital medical patient transportation (MPT). In this chapter, the aim was to explore collaboration in healthcare supply chain to improve the availability of ambulances for interhospital MPT (transfers). For this purpose, an overview of the MPT system in Morocco was presented while highlighting its main issues. Then, a case study of three hospitals in Casablanca City was analyzed employing a collaborative approach. It consisted in forecasting transfer requests for next periods based on past data, and redistributing the ambulances of the three hospitals according to the forecasts. Findings attest to the variability in demand in the three hospitals and therefore the need for a dynamic allocation of ambulances.
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MacArthur-Seal, Daniel-Joseph. "Port to Port Sea Voyaging and the Logistics of Empire." In Britain's Levantine Empire, 1914-1923, 37–65. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192895769.003.0002.

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The chapter shows how the onset of the First World war rerouted the material and human circuits that traversed the eastern Mediterranean. The outcome of this process, though not without its challenges, was the establishment of a British maritime logistical network that linked Alexandria and Salonica, numerous islands between them, and, briefly, the Gallipoli peninsula. The chapter documents the extent of the movements of soldiers, labourers, and refugees set in course by the war and its aftermath and the interactions between them. In addition, it shows how these sea voyages contributed to the establishment of the geographic imaginary of the Levant and how the disciplinary regimes governing the transport ship provided a point of contrast to the city that would be encountered on arrival.
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Conference papers on the topic "City logistics challenges"

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Peixoto Neto, A. G. L., M. L. Galves, O. F. Lima Júnior, and D. Tacla. "Challenges of urban transport problems and city logistics: Sao Paulo city center case." In URBAN TRANSPORT 2008. Southampton, UK: WIT Press, 2008. http://dx.doi.org/10.2495/ut080131.

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Ekholm, Kristoffer, and Jacob Hellgren. "Construction methods for building the Hisingen Bridge." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0144.

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<p>Gothenburg’s main connection across the river Göta älv needs to be secured for the future. The existing bascule bridge will be replaced by a new vertical lift bridge as of 2021. This river crossing is the only connection across the river for the entire tram network in Gothenburg. It is also a very important connection for busses, pedestrians, bicycles and cars. The location of the new bridge, close to the existing bridge in the central part of Gothenburg, generates several challenges that requires special attention such as: logistics, construction planning and minimal impact on the existing city during construction.</p><p>The new bridge is constructed as two separate bridges. One larger bridge that carries all means of transportation with a vertical lift span over the fairway and one bridge exclusively for public transport. There are several very difficult technical challenges within this project. One key challenge has been finding a balance between on-site construction and off-site prefabrication due to lack of space and tight deadlines. None of the construction are not allowed to have any negative impact on the traffic nor surrounding structures, which has shown to be difficult during foundation works.</p>
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Awad Núñez, Samir, Alberto Camarero Orive, María Romero Sánchez-Brunete, Alfonso Camarero Orive, and Nicoletta González Cancelas. "TREATMENT OF UNCERTAINTIES IN THE EXISTENCE OF FREE BERTHS WITH RISK ANALYSIS TECHNIQUES. ESTABLISHMENT OF POLICIES IN PORT OF CADIZ (SPAIN)." In CIT2016. Congreso de Ingeniería del Transporte. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/cit2016.2016.3721.

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This research discusses the challenges involved in the treatment of uncertainties in the existence of free berths during the arrival of cruise ships at seaports. Pursuing this goal, a three-step methodology is adopted: 1) Identifying risk sources and critical risk variables and how they are related; 2) Fitting the Probability Distribution Functions that best represent the behaviour of each critical risk variable; and 3) Simulating the probability of a ship having to wait because there are no free berths using a technique that combines statistical concepts (random sampling) with the ability of computers to generate pseudo-random numbers and automate estimations of the values of the set of critical risk variables. The innovative use of risk analysis techniques in this field allows the establishment of policies to improve the planning and management of port infrastructure, for example, deciding when it is necessary to work to increase the number of berths. As a case of study, we applied this methodology to study whether the enlargement of the wharf in the port of Cadiz (Spain) is necessary right now considering the number of cruise ships that have arrived at the port in the past three years, their date and hour of arrival, their length and draught, the duration of their stay in port and their waiting time before being able to enter the port. This action would require moving logistics activities to a new terminal, but would bring to the city the opportunity to rethink the seafront, introducing new cruiser links with the city centre and developing a better seaport-city integration.DOI: http://dx.doi.org/10.4995/CIT2016.2016.3721
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Valvashov, A. N. "Green Economy Methods In A Large City Innovative Transport-Logistic Development." In GCPMED 2018 - International Scientific Conference "Global Challenges and Prospects of the Modern Economic Development. Cognitive-Crcs, 2019. http://dx.doi.org/10.15405/epsbs.2019.03.141.

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Dhyani, Ritesh. "City Gas Distribution Challenges: Challenges Faced by CGD, IGL — A Case Study With Solutions Adopted." In ASME 2019 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/iogpc2019-4582.

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There are some issues and concerns that need urgent attention. Chief among these are delays in securing multiple clearances, lack of well-defined market potential, entry barriers, deficient pipeline connectivity and uncertainty regarding domestic gas supply. The challenges during the reward of license revolve around issues affecting project Internal Rate of Return (IRR), project investment rate of return, market exclusivity, gas allocation, gas availability issues, logistic and manpower issues. With the formation of PNGRB, the safety practices and guidelines were looked into and framed. But once allocation process is over and operation is in progress, there are still several challenges that are being faced as: • Safety Management • Space Constraint for CNG station facilities • Queue Management • GIS for CGD network • Third party damages • Coordination with other utility Companies • Compliance of emission norms • Equipment Availability • Customer satisfaction (Services, Metering, billing) • Threat of alternate energy solutions • Embrace digital technology in conjunction with analytics intervention. • Compliance of stringent targets by the ministry. For IGL, being into the operation at the capital of the nation the major concern with CGD is safety, customer friendly operation and on-time solutions. This paper will discuss in detail the work adopted by IGL to cater the problem of space constraint, queue management and external threats. Apart from this, it also covers the various technologies and automation strategies adopted towards safety system, metering, billing, equipment availability etc. CGD companies must embrace digital technology in conjunction with analytics intervention to enjoy technology renaissance. It will help in achieving improvements and address issues in PNG, CNG and management of assets, among others. Emphasis will be given to provide a few such initiatives in detail, mentioned above, such as the pilot project going for HCNG plant, SCADA system for online monitoring of equipment, GIS system for pipeline integrity, automation of safety system and customer satisfaction.
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Ferreira, Fernando A. Carriço, João Paulo de Barros Leite, Márcia G. de Novaes, Marcos José Moraes da Silva, and Luciane Tomaz. "Quality Program for Natural Gas Pipeline Operation and Maintenance." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90470.

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The 670-km gas pipeline crossing the Amazon Forest to connect the production field in Urucu to Manaus, the main city of Brazil’s North region, presents many challenges for operation and maintenance. The difficulties of accessing remote areas in the forest, seasonal flooding and lack of infrastructure result in complex and expensive logistics. Many intermediate installations of the pipeline can only be accessed by helicopter. This highly complex operational scenario has been chosen as the prototype for a broader management program which aims to eliminate risks of failures that can impact natural gas delivery. The main principle behind this program is focus on the critical equipment and prioritization of better maintenance for that equipment. The program combines concepts of asset management, reliability centered maintenance (RCM), and Lean Six Sigma. A well-designed asset management program, supported by remote monitoring of instrumentation, allows better control and management of the critical equipment, meaning faster maintenance response and less transport of spare parts. RCM provides a suitable mechanism to define the critical equipment and Lean Six Sigma simplifies both operational and maintenance processes by reducing the activities that do not add value while working to prevent risks of failures of critical equipment. An interactive computational system has been developed to disseminate and facilitate the use the Six Sigma quality tools. In addition, the program coordinators have already been trained in the Six Sigma Green Belt module and the technical staff will be trained in the Yellow Belt module. As a result of the initial stages of implementing the program, the number of execution standards for operation and maintenance has been reduced from 35 to 8, with an increase in productivity. For the next stages of the program, further productivity improvements are expected, along with more efficient control of critical processing and transport equipment, to minimize or promptly mitigate the effects of failures that can prevent delivery of natural gas.
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Pekoll, Oskar-H. "Upside Down: Historic Tram Goes Underground – an Infrastructure Challenge on the Way to a Modern City." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0074.

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<p>To deal with the high volume of traffic in the historic city center of Karlsruhe (Germany), the track system of the historic surface tram is moved underground.</p><p>First, seven underground stations are built, which are then connected by using a tunnel boring machine for excavation of the tracks. While the traffic continues on the surface, the new underground stations are being built in sections using the dig-and-cast construction method. Due to the high ground water level bore piles and diaphragm walls of reinforced concrete / concrete cut-off wall are used as excavation pit shoring. A grouted sealing blanket made using jet grouting processes serves as horizontal blanket.</p><p>The cover is made while the traffic continues overhead, to this end traffic routing of road and tram traffic is altered in several stages of construction. The subsequent removal of the soil is realized via this newly created tunnel system – this way no truck traffic has to pass through the city center.</p><p>The construction is a challenge to permit a limitation of the deformations in relation to the settlement of the immediately adjacent historic buildings and also in the logistics of the construction while keeping the traffic above ground running.</p>
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Ramos, Sandro. "Challenges to Repair a Damaged NGL Pipeline by Third Parties in the Andean Mountains Without Stopping Pumping." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78307.

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One of the challenges of transporting Natural Gas Liquids (NGL) is to ensure that the flow should be delivered with standards of safety, reliability, and efficiency while conducting repairs on the pipeline. This paper discusses the difficulties that had to be overcome to repair a damaged NGL pipeline by third parties performed in the Andean Mountains in Ayacucho, Perú, on NGL pipeline operated by Compañía Operadora de Gas del Amazonas (COGA). This pipeline and a parallel one also operated by (COGA) are the main source of supply of NGL and Natural Gas (NG) to the city of Lima, capital of Perú. To repair the Third-Party damage, an emergency committee COLE by its acronym in Spanish (Local Emergency Operative Committee) was formed with the purpose to coordinate the actions for the execution of the repair and meet the Quality, Safety, Social and Environment standards. The committee had an important tool, the Operational Contingency Plan, which provided guidelines for dealing with an emergency. The job required isolating a section of 14-inch NGL transportation pipeline and a bypass to keep the pipeline operational. The work had a tight schedule that needed to be followed to reduce the environmental, safety and service risks. The situation presented several challenges including the use of double barriers to safeguard personnel and facility equipment during the pipeline repair. This double block methodology had to be applied to meet environmental and safety concerns. The damage was located at 4,495 meters above sea level (masl). The strike caused an NGL leak resulting in the installation of an NGL containment and storage system. This location lacked the logistical facilities for the attention of a pipe repair operation, adverse conditions of cold climate, desolate land and other conditions that had to be overcome. This paper discusses how social, safety, environment and logistical challenges were overcome to repair a damaged caused by third parties in an NGL pipeline, which resulted in timely repair completion and uninterrupted flow of NGL.
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Velásquez M., Fernando Adolfo. "Management System for the Control of Geotechnical Risk in the Camisea Pipeline Transport System." In ASME 2015 International Pipeline Geotechnical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipg2015-8528.

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The Camisea Pipeline Transport System [“Sistema de Transporte por Ductos”] consists of two parallel pipelines, one of which carries natural gas (NG) over a distance of 730 km, and the other which carries liquid natural gas (LNG) over a distance of 560 km, starting in the Amazon basin in Malvinas (Cusco). The LNG pipeline ends in Playa Lobería (ICA) and the NG pipeline ends at the City Gate located in Lurín (Lima). In terms of complexity, the geographic, geological, and climate-related characteristics of the rain-forest, mountain, and coastal regions through which the pipeline passes set it apart from the rest of the world’s pipelines. The highest point in the area is 4,860 meters above mean sea level in its mountain portion in the Peruvian Andes. The first 200 km, which pose the greatest operational challenges, are characterized by residual soils, slopes steeper than 45°, and rainfall of more than 6,000 mm per year — in addition to the logistical difficulties presented by the lack of vehicular access for the transport of personnel, materials, and equipment, such that maintenance work must be done by helicopter. The purpose of this article is to illustrate the diversity of geotechnical scenarios in this geographical area, and to discuss the early identification of risks through the management and control cycle for geotechnical threats, which consists of the following stages: • The Threat Identification System: This stage includes the continuous monitoring of the right-of-way in order to detect geotechnical problems, which are triggered primarily by rainfall. • Risk assessment: This stage involves the use of a geotechnical risk matrix that was developed in accordance with the so-called “Safety Ratio” [“Relación de Seguridad”], which assimilates the parameters for the calculation of the Safety Factor used in slope stability analysis, thereby making it possible to establish the various risk levels. • Structure design: Depending on the risk level, the corresponding engineering tasks are developed and prioritized in order to determine the designs, through the use of geotechnical engineering processes such as subsurface exploration, laboratory tests, mathematical modeling, and instrumentation. • Implementation of the structures: The geotechnical stabilization structures are built during the dry season, i.e., from April to October of each year. • Monitoring and surveillance: Once the stabilization structures have been built and the dry season has ended, continuous monitoring is performed during the rainy season (November to April), through ongoing inspections, topographic monitoring, and instrumentation at sensitive sites, using inclinometers, piezometers, and strain gauges. Thanks to these working techniques and control measures, as implemented in an area with special topographic and climate-related characteristics, it has been possible to achieve a dramatic reduction in the geotechnical risks to which the Camisea transport system is exposed.
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