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Analýza dopravy na Slovensku / Analysis of transportation in SlovakiaBrezina, Jakub January 2015 (has links)
The theme of this thesis is the analysis of transportation in the Slovak Republic with a focus on freight transportation. The Output of the thesis is recommendations for improvements of transportation in the Slovak Republic. The theoretical part deals with theoretical knowledge on transportation, transportation infrastructure, principles of SWOT analysis, method for evaluation of alternatives and the general characteristics of the Slovak Republic. The practical part is focused on the analysis of transporation and creation of recommendations based on this analysis.
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Úloha zasílatele v exportní přepravě LCL zásilky do USA / The role of freight forwarding company arranging LCL export shipment to USAŠtěpánek, Jindřich January 2015 (has links)
This diploma thesis describes ocean freight LCL export shipment from the Czech republic to USA. Freight forwarder not only arranges the transportation, he can also offer complementary services like warehousing, packing or customs clearance of shipment. After definition of freight forwarding I described current situation on the ocean freight transportation market, especially infrastrucuture and means of transportation. There are more strict rules for shipments imported to USA. In cooperation with customs declaration I tried to describe all the steps, that are necessary to start arranging export shipment. The last part of diploma thesis describes specific business case of arranging LCL export shipment to USA.
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DEVELOPMENT OF GUIDELINES FOR IMPLEMENTATION OF FREIGHT AND TRANSIT SIGNAL PRIORITIES TO ENHANCE ROAD TRAFFIC SUSTAINABILITYUnknown Date (has links)
Lately, the attractiveness of cities has contributed to a rise in vehicle movements to and from cities. The growth of freight movements in cities predictably will be one of the critical issues of the near future. Congestion caused by the increased movements of freight impacts the flow of private and transit vehicles. Thus, it is crucial to reduce the congestion on multimodal corridors. Components of the Intelligent Transportation System (ITS) such as Freight Signal Priority (FSP) and Transit Signal Priority (TSP) that promote the freight and transit vehicles may not only help solve these conditions but may assist with the sustainability of the system. The primary objective of this research is to develop guidelines for traffic agencies to implement signal priorities based on identified decision factors on certain corridors. Besides, this study evaluates the efficiency of FSP and TSP in improving the performance of freight and transit systems. Finally, inclusive guidelines are drawn up based on the literature and the conducted simulation. The developed guidelines apply to corridors where freight delay plays a vital role in the assessment of corridor benefits. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection
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Alternative cost-optimal pathways for the transport sector of CyprusWiking, Josefin January 2015 (has links)
This thesis investigates the possible future pathways for the road transportation sector of Cyprus, in a time horizon from the year 2013 to 2040. The road transportation sector of Cyprus is the most energy consuming sector in the country, completely dependent on the use of diesel and gasoline. In order to comply with the renewable energy target for the transportation sector set by the European Union, Cyprus needs to transform its road transportation sector. The software MESSAGE (Model for Energy Supply Strategy Alternatives and their General Environmental Impact) is used to model the road transport sector, consisting of passenger and freight transportation. The results of the modelling provides insights into the most cost-effective pathways for Cyprus in the future. In addition to the reference scenario, four different scenarios are examined. These scenarios are focusing on different relevant aspects for Cyprus which are renewable energy, natural gas, public transport and hydrogen. The results of the study indicate that the total numbers of petroleum fueled vehicles will increase in the future, and the freight transport will be particularly difficult to transform. For the passenger transport, there will be a fuel switch from gasoline to diesel, since diesel is less expensive than gasoline. There are possibilities for increasing the numbers of alternative low-carbon emitting vehicle technologies in Cyprus. For the passenger transport, the most cost-effective low-carbon vehicle technologies are hybrid diesel electric cars, plug-in hybrid diesel electric cars and hybrid electric diesel buses. For the freight transport, the most cost-effective low-carbon vehicle technologies are natural gas heavy trycks and electric light trucks. Lastly, the results of the study indicate that it will not be possible for Cyprus to reach the renewable energy target for the transportation sector. The country has to investigate in taxation schemes for increasing the numbers of alternative vehicles as well as increasing the blends of biofuels into gasoline and diesel.
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Maritime freight transportation and the impact of regulatory changes : A comparison between Spain and SwedenBlanco Munuera, Luis January 2017 (has links)
Maritime freight is a sector of high importance in the field of international trade. During the last decades, maritime freight transportation has been growing progressively, nowa- days, in order to transport large quantities of materials and save great distances, it is the most used transport system. The maritime freight transport involves a large num- ber of companies, which generates a greater number of jobs and acquires an additional importance for the economy and trade of the country. However, in order to maritime transportation to be in optimal conditions, it must be accompanied by a network of infrastructures and strategic points that allow different companies to carry out their func- tions. Nowadays, large quantities of goods are transported through the sea, this is why a regulatory framework is needed to control the various limitations and restrictions that must be imposed at sea. The organization in charge of this work is the so-called SOLAS (Safety of Life At Sea), which is part of the United Nations department. This organi- zation is responsible, as mentioned above, for safety at sea for ships and goods, it acts according to the current situation and responding to different disasters. As a result of certain accidents, whether navigation or breakage, the last law that has implemented is known as Verified Gross Mass (VGM). This thesis is divided into two parts, the first one analyses the importance of maritime transport for the countries of Spain and Sweden. It will show the repercussion it has on the country and its different connections to transport the goods through the country, as well as future trends to move these goods for each country as well. To conclude this part, a comparison will be made between both countries. Secondly, a study will be car- ried out on the effect of the law that was implemented dated back on 1 July 2016, the so-called Verified Gross Mass. A study is carried out in order to assess the challenges and opportunities generated by this law for the different stakeholders involved in maritime transport and how they have been acting in the countries of Spain and Sweden. Hence, fi- nal conclusions can be obtained regarding the conduct of each stakeholder in each country. Finally, the importance of road transport as the large transport system will be high- lighted in combination with the maritime transportation in both countries. On the other hand, regulatory changes will make a cooperation between stakeholders in order to reduce the impact in their activity.
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Assessment of the Jones Act Waiver Process on Freight Transportation Networks Experiencing DisruptionFialkoff, Marc Richard 27 October 2017 (has links)
In October 2012, Hurricane Sandy caused massive disruption and destruction to the Mid-Atlantic region of the United States. The intensity of the storm forced the Port of New York and New Jersey to close, forcing cargo diversion to the Port of Norfolk in Virginia. Because of the Jones Act restriction on foreign vessels moving between U.S. ports, the restriction on short sea shipping was viewed as a barrier to recovery.
Much of the critical infrastructure resilience and security literature focuses on the "hardening" of physical infrastructure, but not the relationship between law, policy, and critical infrastructure. Traditional views of transportation systems do not adequately address questions of governance and behaviors that contribute to resilience. In contrast, recent development of a System of Systems framework provides a conceptual framework to study the relationship of law and policy systems to the transportation systems they govern.
Applying a System of Systems framework, this research analyzed the effect of relaxing the Jones Act on freight transportation networks experiencing a disruptive event. Using WebTRAGIS (Transportation Routing Analysis GIS), the results of the research demonstrate that relaxing the Jones Act had a marginal reduction on highway truck traffic and no change in rail traffic volume in the aftermath of a disruption. The research also analyzed the Jones Act waiver process and the barriers posed by the legal process involved in administration and review for Jones Act waivers. Recommendations on improving the waiver process include greater agency coordination and formal rulemaking to ensure certainty with the waiver process.
This research is the first in studying the impact of the Jones Act on a multimodal freight transportation network. Likewise, the use of the System of Systems framework to conceptualize the law and a critical infrastructure system such as transportation provides future opportunities for studying different sets of laws and policies on infrastructure. This research externalizes law and policy systems from the transportation systems they govern. This can provide policymakers and planners with an opportunity to understand the impact of law and policy on the infrastructure systems they govern. / PHD
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Uma contribuição ao projeto de redes de transporte de carga parcelada. / A contribution to the network design for less-tha-truckload freight transportation.Silva, Marcos Roberto 15 October 2010 (has links)
Esta pesquisa trata do projeto de redes de distribuição de carga parcelada. Mais especificamente são tratados dois tipos de problemas que são comuns no planejamento desse tipo de sistema. O primeiro deles corresponde ao problema estratégico de configuração de redes do tipo hub-and-spoke, consistindo na definição simultânea da quantidade e localização de terminais para consolidação de carga (ou hubs), e na definição da alocação dos terminais aos hubs localizados. Uma vez determinada a configuração da rede, o segundo problema, no nível de decisão tático, corresponde na definição do caminho que cada carga parcelada deve percorrer desde sua origem até alcançar seu terminal de destino, a um mínimo custo, tendo a rede hub-and-spoke como um dado de entrada do problema. Um novo modelo matemático é proposto para representar o problema estratégico de configuração de uma rede hub-and-spoke, possuindo uma menor quantidade de variáveis e restrições, ao se comparar com outros modelos matemáticos comumente utilizados para representar o problema. Esse novo modelo matemático permitiu a obtenção de soluções ótimas para problemas em redes com até 100 terminais, sendo apresentada pela primeira vez a solução ótima para problemas utilizados como benchmark na literatura. Dado que problemas de grande porte ainda continuam muito difíceis de serem resolvidos, são propostas três variantes de uma heurística simples e eficiente utilizando técnicas de multi-início e busca tabu, bem como uma heurística integrada em dois estágios baseada em busca tabu para solução. Experimentos computacionais utilizando dados tradicionalmente utilizados na literatura para solução de problemas de configuração de redes hub-and-spoke (conjuntos de dados CAB e AP), bem como instâncias novas e modificadas, mostraram que a abordagem utilizada para solução do problema possibilitou a obtenção da solução ótima, ou a melhor solução conhecida, para esses problemas em um tempo de processamento muito curto, permitindo assim resolver de forma eficiente problemas de grande porte, nunca antes resolvidos em pesquisas anteriores. O segundo problema foi motivado por uma aplicação prática de uma empresa de transporte rodoviário de cargas parceladas no Brasil. O problema diz respeito ao planejamento de carregamentos a serem realizados em cada terminal, levando-se em consideração cada carga parcelada que precisa ser transportada, definindo o percurso que cada carga deve percorrer até chegar ao seu destino. É proposto um modelo matemático e, dada a dificuldade para se resolver problemas de tamanho como o encontrado na prática, é proposto também um método de solução utilizando metaheurística busca tabu. Experimentos computacionais realizados mostraram que a heurística proposta pôde efetivamente resolver problemas de tamanho como o encontrado na prática. / This research deals with problems related to distribution networks for less-than-truckload (LTL) freight transportation. More specifically, we deal with two relevant problems that arise. The first corresponds to the strategic problem of designing and configuring hub-and-spoke networks in terms of simultaneously determining the optimal number of consolidation terminals (hub) nodes, their locations and the allocation of the other terminals (spokes) to the hubs. . Once the network configuration is determined, the second problem, in the tactical level of decision, corresponds to defining the path that each LTL individual freight needs to follow from its origin to reach its destination terminal, at a minimum cost, having a hub-and-spoke network topology as a data entry to the problem. A new mathematical model is proposed to represent the strategic problem of designing a hub-and-spoke network, with fewer variables and constraints than previous formulations found in the literature This model allowed us to obtain optimal solutions for problems in transportation networks with up to 100 terminals, reporting for the first time the optimal solutions of benchmark problems in the literature. Since this problems still remains too hard to solve for larger instances, we propose we propose three variants of a simple and efficient multi-start tabu search heuristic as well as a two-stage integrated tabu search heuristic to solve it. Computational experiments using typical benchmark problems (CAB and AP data sets) as well as new and modified instances show that our approaches consistently return the optimal or best-known results in very short CPU times, thus allowing the possibility of efficiently solving larger instances of the USAHLP than those found in the literature. The second problem is motivated by a practical application of a LTL transportation company in Brazil. It deals with the planning of loads to be done at each terminal, taking into account each LTL freight that needs to be transported, defining the path that each good needs to follow to reach its destination. A new mathematical model is proposed, and, since real world problems are very hard to solve, a heuristic based on tabu search is also developed. Computational experiments show that our heuristic can effectively solve real-world instances from a trucking company in Brazil.
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Estilos de liderança de fundadores de empresas familiares do setor de transporte rodoviário de cargas no Brasil e a continuidade do negócioCavicchioli, Gilberto 29 May 2008 (has links)
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Previous issue date: 2008-05-29 / This Master s thesis relies on the purpose of analysing the relationship between leadership styles and business continuity in the perception of families who own and manage Freight Transportation Companies (FTC) s in Brazil. It is intended in this research work to contribute in the way to evaluate certain features of those FTCs, in the sense of investigating how founders or managers of those firms consider their leadership styles to be able to make the business run continuously throughout time.
This research work is structured in three chapters; the first two chapters present a review on diverse theories of leadership and family business, while the third chapter describes a survey carried out with founders or managers of ten FTCs. The criteria for the companies selection took into consideration the fact of such firms being family businesses, in which family members have actual participation in the way business is run in those companies.
From all information gathered in those interviews, it was possible to verify a linking among those theories selected to this thesis and the statements of the FTCs owners or descendants in charge of the business, especially on what regards the trade activities performed along time. Despite the interviewed people have reinforced the important role of the leader in the way they ran their business, they stated that leadership was not the most important factor in family business s continuity or in the success such company had gotten as time went by; this continuity subject might depend on the founder s leadership styles that maintain as priority the development of specific abilities on the successors and the strengthening ot their most efective capabilities and not depend strictly on a kind of magnetic effect / A presente dissertação tem por finalidade analisar as relações entre os estilos de liderança e a continuidade do negócio na percepção dos fundadores de empresas familiares do setor de transportes de cargas no Brasil. Pretende-se contribuir no modo de avaliar aspectos da estrutura organizacional das empresas de transporte rodoviário de cargas, as ETCs, no sentido de averiguar como os fundadores ou principais gestores dessas empresas consideram que seus estilos de liderança sinalizam respaldos para a continuidade do modelo de negócio.
A estrutura deste trabalho compreende a elaboração de uma parte teórica com discussões acerca de liderança e empresa familiar, desenvolvida nos dois primeiros capítulos, e outra de caráter investigativo, envolvendo uma pesquisa de campo constituída a partir de entrevistas com fundadores ou principais gestores de dez empresas familiares do setor de transporte rodoviário de cargas.
Os critérios envolvidos para a seleção de tais empresas levaram em consideração o fato de serem empresas familiares e que os fundadores ou seus descendentes tivessem participação ativa na condução dos negócios e outras atividades da empresa.
A partir das entrevistas obtidas constatou-se um alinhamento entre as teorias selecionadas para esta dissertação e as afirmações dos dirigentes das ETCs sobre trajetória das atividades comerciais realizadas no decorrer do tempo. Apesar de os entrevistados salientarem a importância do papel do líder ao conduzirem os negócios, afirmam que estilo de liderança não é o fator decisivo na continuidade da empresa ou no sucesso que ela tenha adquirido com o tempo; esta questão da continuidade da empresa familiar pode depender da adoção pelo fundador, de estilos de liderança que priorizem o desenvolvimento das habilidades específicas dos herdeiros e na potencialização de suas capacidades mais eficientes e não apenas na base de um efeito magnético
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Consolidation problems in freight transportation systems: mathematical models and algorithms / Problemas de consolidação em sistemas de transportes: modelos matemáticos e algoritmosCastellucci, Pedro Belin 12 August 2019 (has links)
Freight distribution systems are under stress. With the world population growing, the migration of people to urban areas and technologies that allow purchases from virtually anywhere, efficient freight distribution can be challenging. An inefficient movement of goods may lead to business not being economically viable and also has social and environmental negative effects. An important strategy to be incorporated in freight distribution systems is the consolidation of goods, i.e., group goods by their destination. This strategy increases vehicles utilisation, reducing the number of vehicles and the number of trips required for the distribution and, consequently, costs, traffic, noise and air pollution. In this thesis, we explore consolidation in three different contexts (or cases) from an optimisation point of view. Each context is related to optimisation problems for which we developed mathematical programming models and solution methods. The first case in which we explore consolidation is in container loading problems (CLPs). CLPs are a class of packing problems which aims at positioning three-dimensional boxes inside a container efficiently. The literature has incorporated many practical aspects into container loading solution method (e.g. restricting orientation of boxes, stability and weight distribution). However, to the best of our knowledge, the case considering more dynamic systems (e.g. cross-docking) in which goods might have a schedule of arrival were yet to be contemplated by the literature. We define an extension of CLP which we call Container Loading Problem with Time Availability Constraints (CLPTAC), which considers boxes are not always available for loading. We propose an extension of a CLP model that is suitable for CLPTAC and solution methods which can also handle cases with uncertainty in the schedule of the arrival of the boxes. The second case is a more broad view of the network, considering an open vehicle routing problem with cross-dock selection. The traditional vehicle routing problem has been fairly studied. Its open version (i.e. with routes that start and end at different points) has not received the same attention. We propose a version of the open vehicle routing problem in which some nodes of the network are consolidation centres. Instead of shippers sending goods directly to their consumers, they must send to one of the available consolidation centres, then, goods are resorted and forwarded to their destination. For this problem, we propose a mixed integer linear programming model for cost minimisation and a solution method based on the Benders decomposition framework. A third case in which we explored consolidation is in collaborative logistics. Particularly, we focus on the shared use of the currently available infrastructure. We defined a hub selection problem in which one of the suppliers is selected as a hub. In a hub facility, other suppliers might meet to exchange their goods allowing one supplier to satisfy the demand from others. For this problem, we propose a mixed integer linear programming model and a heuristic based on the model. Moreover, we compared a traditional distribution strategy, with each supplier handling its demand, against the collaborative one. In this thesis, we explore these three cases which are related to consolidation for improving the efficiency in freight distribution systems. We extend some problems (e.g. versions of CLP) to apply them to a more dynamic setting and we also define optimisation problems for networks with consolidation centres. Furthermore, we propose solution methods for each of the defined problems and evaluate them using randomly generated instances, benchmarks from the literature and some cases based on real-world characteristics. / Sistemas de distribuição de carga possuem uma demanda muito alta. Com a população mundial crescendo, a migração em direção às áreas urbanas e as tecnologias que permitem compras de virtualmente qualquer lugar, a distribuição eficiente de mercadorias pode ser um desafio. Uma movimentação ineficiente de mercadorias pode tornar negócios economicamente inviáveis além de ter um impacto social e ambiental negativos. Uma estratégia importante para se incorporar em sistemas de distribuição é a consolidação de cargas, isto é, agrupar cargas de acordo com seus destinos. Essa estratégia aumenta a utilização dos veículos, reduzindo o número de veículos e viagens necessários para a distribuição e, consequentemente, custos, tráfego, poluição sonora e do ar. Nesta tese, é explorada a técnica de consolidação em três casos diferentes de um ponto de vista de otimização. Cada caso é relacionado a problemas de otimização para os quais são propostos modelos de programação matemática e métodos de solução. O primeiro caso em que é explorada a consolidação é em Problemas de Carregamento de Contêineres (PCCs). PCCs pertencem a uma classe de problemas de empacotamento que visa posicionar caixas tridimensionais dentro de contêineres eficientemente. A literatura tem incorporado diversos aspectos práticos em procedimentos de solução dos PCCs (por exemplo, restringir a orientação das caixas, estabilidade e distribuição de peso). No entanto, o caso que considera sistemas logísticos mais dinâmicos (como cross-docking), nos quais mercadorias podem ter uma agenda de chegada ainda não havia sido contemplados. É definida uma extensão de PCC chamada de Problema de Carregamento de Contêieneres com Restrições de Disponibilidade Temporal (PCCRDT). Também, propõem-se modelos e métodos de solução para o PCCRDT que são capazes de lidar com incerteza na chegada das mercadorias. O segundo caso utiliza uma visão mais abrangente da rede de distribuição, considerando um problema de roteamento de veículos em rede aberta com seleção de cross-dock. O problema tradicional de roteamento de veículos é bastante estudado. A sua versão aberta (com rotas que começam e terminam em pontos diferentes) não tem recebido tanta atenção. É proposta uma versão do roteamento de veículos em rede aberta em que alguns nós da rede são centros de consolidação. Os fornecedores, ao invés de enviar as mercadorias diretamente para os consumidores, enviam-nas para um dos centros de consolidação disponíveis, então, as mercadorias são reorganizadas (em diferentes veículos) e encaminhadas para o seus destinos. Para esse problema, é proposto um modelo de programação linear inteira mista para a minimização de custo e um método de solução baseado no arcabouço de decomposição de Benders. Um terceiro caso em que foi explorada a consolidação de mercadorias é o de logística colaborativa. Particularmente, se concentrou no uso compartilhado de infra-estrutura já disponível na rede de distribuição. É definido um problema de seleção de seleção de um dos fornecedores como hub. No hub, outros fornecedores podem se encontrar para trocar suas mercadorias, permitindo que um fornecedor satisfaça a demanda de outro. Para esse problema, é proposto um modelo de programação linear inteira mista e uma heurística baseada no modelo. Ainda, é comparada uma estratégia de distribuição convencional (com cada fornecedor responsável pela sua própria demanda) com uma estratégia colaborativa. Nesta tese, são explorados esses três casos que se relacionam com consolidação para melhorar a eficiência de sistemas de distribuição de carga. São estendidos alguns problemas (como o PCC) para que se possa aplicá-los em cenários mais dinâmicos e também são definidos problemas de otimização em redes com centros de consolidação. Além disso, são propostos métodos de solução para cada um dos casos. Os métodos são avaliados em instâncias geradas aleatoriamente, instâncias da literatura e, em alguns casos, instâncias baseadas em cenários reais.
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Information Integration in Intermodal Freight Transportation : Dyad multiple case studyMehrmand, Alireza, Nguyen, Quynh, Vakulenko, Yulia January 2015 (has links)
Background: In the past, enterprises had no recognition of information integration and operated as independent units within a chain. As a result, most of the firms throughout the supply chain faced inadequate information sharing, lack of collaboration, and absence of compatible IT infrastructure. Theses three elements play a crucial role in information integration that assists companies’ goal congruence. In a highly competitive market, companies from different industries take these three elements into consideration in order to synchronize their activities. Nowadays, transportation industry plays a crucial role in all developed countries in order to fulfill the customer’s needs and act as a connection between manufacturers and consumers. Intermodal freight transportation is one of the elements of transportation industry that includes two main players - freight company and terminal operator. In this respect, it is essential to review theoretical framework and explore the practice of information integration within intermodal freight transportation. Hence, this study carries an investigation on information integration in accordance with theoretical framework from the perspective of the dyad that includes a freight company and a terminal operator. Purpose: The research defines the level of information integration within intermodal freight transportation. A freight company and a terminal operator are the players studied in this research. Three elements of information integration, which are collaboration, information sharing, and IT implementation and adaptation, are investigated in order to identify the level of information integration. The main objective is to understand the information integration and its level within the industry from a dyadic perspective. Method: This research is conducted from a positivist scientific perspective along with qualitative research method and deductive approach. The authors conduct the embedded multiple-case study with a dyadic perspective. In this context, the freight companies and terminal operators are the studied players within this research. In order to gather the empirical data, semi- structured interviews are conducted via telephone and email. Empirical data is analyzed by utilizing two different methods, which are within-case and cross-case analysis. Furthermore, ethical issues are considered in this research, based upon trustworthiness and accuracy. Result and Conclusions: The conclusion of this research is based upon within and cross case analysis. Three studied dyads have shown the same result of medium level, while one dyad has demonstrated high level of information integration. In this regard, each dyad has been rated separately in accordance with the theoretical framework that provides scale with low, medium and high levels regarding collaboration, information sharing, and IT implementation and adaptation in order to find the level of information integration. From the dyadic perspective and with help of cross case analysis, the level of information integration regarding the whole research population is defined at medium level. It is remarkable that obtained results, in accordance with the theoretical framework, are different from the companies’ representatives’ perception of information integration.
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