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The effect of demand information sharing in a supply chain under demand uncertainty: a simulation study

Rito, Pedro Varela
Fonte: Faculdade de Ciências e Tecnologia Publicador: Faculdade de Ciências e Tecnologia
Tipo: Dissertação de Mestrado
Publicado em //2012 Português
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Dissertação para obtenção do Grau de Mestre em Engenharia e Gestão Industrial; The modern business environments are constantly subject to unpredictable events that can adversely influence the supply chain (SC) performance. In order to remain competitive, SCs are therefore striving to achieve greater coordination and collaboration among SC entities. The advances in technology in the area of information technology are enabling instantaneous information sharing amongst SC entities. Demand information sharing appears as a widely used tool to improve the SC performance. In this context, SC simulation appears as a fundamental tool to quantitatively analyze this management practice in a virtual system environment, enabling multiple scenario analysis. This dissertation intends to verify through the use of discrete event simulation, the impact of the presence of demand information sharing on the performance of a SC and whether this practice can reduce the impact of an uncertain customer demand in terms of the total SC costs and the service level. Considering that the customer demand follows a Normal distribution with an unknown standard deviation, three different scenarios are simulated using three distinct standard deviations. Further...

Modelling of information sharing in capacitated assembly supply chains using simulation

Lanning, Ivor
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/doctoralThesis; all_ul_research; ul_published_reviewed; ul_theses_dissertations
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peer-reviewed; It has been noted in Lee and Wu (2006) that competition has required the integration of supply chain members and resources through supply chain management (SCM) and that inventory control as a key component of SCM is no exception to this. One manner in which firms in a supply chain can integrate is through information sharing. New technologies have facilitated the movement and processing of data between partners such as electronic data interchange (EDI) in the past, through to more current tools such as on-time, real-time web based portals. In tandem with more readily available information and data, methods for utilisation of such have been explored in research and practice. An array of literature now exists on various aspects of information enabled supply chain management and information enabled inventory control. Considering this, we have proposed a dissertation in the field of information sharing in capacitated assembly supply chains focusing on the inventory control mechanisms applied within. A case study based around a contract manufacturer in the electronics industry provides a vehicle for testing the information sharing propositions within a realistic supply chain. It is complicated on the supply side by multiple suppliers...

Designing an Operational Knowledge and Information Sharing System : The Malawi Social Action Fund

Khan, Aisha Rahaman
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
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The Malawi Social Action Fund (MASAF) has been in operation since July 1995 and was established specifically to directly finance communities to implement demand-driven sub-projects. Recently, (2004) under MASAF 3 it has begun the process of establishing a Knowledge and Information Sharing System (KISS) that will facilitate knowledge documentation and dissemination in order to improve the quality of project and program delivery. This system seeks to build on and integrate the experiences and lessons accumulated in the last nine years and move towards making MASAF a knowledge sharing and learning organization.

Ports of Delaware Bay Industry and Public Sector Cooperation for Information Sharing / December 2010

Salem, Anita; Walsh, Wendy; Englehorn, Lyla
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
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The Maritime Information Sharing Taskforce (MIST) held its fourth event in Philadelphia on September 28-29, 2010. Using a participatory design approach, NPS researchers partnered with federal, state, local and commercial stakeholders to conduct a process to assess the information sharing needs of security personnel in this port region.

Industry and Public Sector Cooperation for Information Sharing: Ports of the Puget Sound / July 2009

Salem, Anita; Walsh, Wendy; Englehorn, Lyla
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
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This report presents the findings of the Maritime Information Sharing Taskforce (MIST) research effort for the Washington State Puget Sound ports. Using a participatory design approach, the researchers partnered with federal and commercial stakeholders to assess the information sharing needs of security personnel in this port region. The research design included an issues workshop, field studies of port personnel, and local networking events. The findings indicate the need for increased interagency collaboration in maritime domain awareness (MDA) and highlight local recommended practices and incentives for information sharing with the private sector. In addition, we gathered usability data on two federal policies/programs.

Multimodal Information Sharing Team (MIST) – Port of Baltimore Industry and Public Sector Cooperation for Information Sharing

Hocevar, Susan Page; Walsh, Wendy; Salem, Anita; Englehorn, Lyla
Fonte: Monterey, California. Naval Postgraduate School, Graduate School of Business and Public Policy Publicador: Monterey, California. Naval Postgraduate School, Graduate School of Business and Public Policy
Tipo: Relatório
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The Multimodal Information Sharing Team (MIST) is an evolution of the Maritime Information Sharing Taskforce that has been conducting workshops in domestic ports since 2008. The MIST provides a framework and process for the collaborative exploration of information sharing across the port multimodal community. The MIST emphasizes the private sector perspective to ensure that government stakeholders are leveraging this critical player in the sharing of all hazards threat information. The Program Manager for the Information Sharing Environment (PM-ISE) sponsored the Baltimore MIST. This report presents the results of an action planning workshop that involved over 30 local, state, and national public and private sector stakeholders in maritime security for the Port of Baltimore. It highlights the motivations for information sharing and the information needs of both public and private sector. It uses the Inter-Organizational Collaborative Capacity model to organize the analysis and recommendations for three aspects of information sharing: security-focused mechanisms, commerce-focused mechanisms, and technology mechanisms. The report concludes with a set of both immediate-term and long term actions that were identified by workshop participants. Through the MIST collaboration...

Communication during complex humanitarian emergencies: using technology to bridge the gap

Perry, Michael W.; Ford, Todd D.; Hogan, James L.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xx, 163 p. : ill. (some col.) ;
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Approved for public release; distribution is unlimited; cal. Technology can play a significant role to enable information sharing between the various participants during CHEs. This thesis documents the development of a proof of concept that supports this. Current reports and user feedback were analyzed to determine requirements for a field-based system that could enhance the flow of information. The developmental process is presented including, requirements generation, group structure and information sharing, collaborative environments and the advantages of the virtual space. Based on a fictional relief operation, a web application was constructed and designated the Relief Operations Coordination Center (ROCC). Built on COTS technology and combined with commercially available collaboration tools, this application showcases the various uses of today's technology and how it can be used to facilitate information sharing during CHEs.; Major, United States Marine Corps; Major, United States Marine Corps; Major, United States Marine Corps

Valued information at the right time (VIRT) and the Navy's cooperative engagement capability (CEC) - a win/win proposition

Acevedo, Rafael A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xvi, 107 p. : ill. (some col.);
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Approved for public release, distribution unlimited; In this thesis I examine the theory of Valued Information at the Right Time (VIRT) and the benefits its implementation can provide to the Navy's best example of accurate information-sharing, the Cooperative Engagement Capability (CEC). The primary premise of VIRT is that only information which has some value to the user and could impact mission accomplishment should be allowed to flow from a source to the user. If information has little or no value to the individual it is destined for, it must simply be regarded as overhead and should not be sent/received. Using a simple simulation I show in this thesis that VIRT has the potential to provide benefits of orders of magnitude versus a non-VIRT implementation. The Navy's CEC program represents a premier air track data sharing mechanism. It enables ships augmented with this capability and residing on the network to share fire control quality information on the individual parameters of air tracks such as location, course, speed, and altitude. There is a place for VIRT implementation within CEC. Such an implementation can prove beneficial both to CEC as an internal user of information and also as a supplier to external entities of its valuable track information. Finally...

A concept of operations for the use of emergent open internet technologies as the basis for a network-centric environment

O'Sullivan, Joshua D.
Fonte: Monterey California. Naval Postgraduate School Publicador: Monterey California. Naval Postgraduate School
Formato: xviii, 170 p. : ill. (some col.) ; 28 cm.
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The Industrial Age spawned a revolution that brought fundamental changes to the business of commerce, the structures of society, and the theories of warfare that are used to this day. With the dawn of the Information Age a similar revolution has begun, with the realization of the science of networks and their effects on complex systems, such as command and control and sharing information both internally and externally of a traditional military organization. Recognizing the power of Network-Centric Warfare, the US Military is transforming to develop that means. This has translated into the holistic requirement of agile, interoperable networks to achieve information superiority in fighting future wars and maintaining peace. The purpose of this thesis is to provide a concept of operations for the use of emergent open Internet technologies as the basis for a network-centric environment. Examining current relevant research on networks and their application in the US military, a system of information systems will be presented to demonstrate current and potential capabilities in information sharing. Developing constructs such as web feeds, portals, blogs, and wikis will be used to create an interconnected framework for use with coalition partners...

Knowledge engineering considerations for improving information sharing in the joint improvised explosive device defeat test board

LaViolette, Richard J.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xviii, 75 p. ;
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Approved for public release; distribution is unlimited.; Improvised Explosive Devices (IEDs) will continue to evolve as the enemy's weapon of choice. Dynamic and responsive enemies alter IEDs in reaction to our Counter-IED efforts, which results in the need for continuous accelerated testing and acquisition of Counter-IED tools. Over the last five years, an accelerated acquisition process enabled the expansion of testing entities and ranges beyond the purview of the Joint Improvised Explosive Device Defeat Test Board (JTB) established to monitor them. As a result, information sharing between JTB organizations is not efficient, which leads to less capable and slowly fielded equipment. This research reports on the use of a cognitive task analysis and contextual inquiry focused on identifying and mitigating information sharing impediments. The objective is to provide recommendations to improve information sharing between personnel involved with the JTB. Results indicate that the most common information sharing barriers relate to organizational culture, which leads to the recommendation of creating a JTB position specifically focused on information flow inside and outside of the organization. Results regarding information sharing enablers indicated that enhancing test range cooperation and improving information systems through more tester level meetings...

Light Reconnaissance Vehicle (LRV) enhancing command, control, communications, and computers and information systems (C4I) to tactically employed forces via a mobile platform

McFerron, Michael P.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xiv, 77 p. : ill. (chiefly col.) ;
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The theories supporting Network Centric Warfare (NCW) continue to mold the tactical use of U.S. forces throughout the global warfare environment. This thesis research will correlate the four tenets of NCW to the tactical employment of the Naval Postgraduate School's LRV. The four tenets of NCW are: 1. A robustly networked force improves information sharing. 2. Information sharing and collaboration enhance the quality of information and shared situational awareness. 3. Shared situational awareness enables self-synchronization. 4. These, in turn, dramatically increase mission effectiveness. The faculty and students at NPS are dedicated to researching methods to leverage science and technology in order to maximize the combat effectiveness of U.S. and allied forces. In teaming with our primary sponsor, U.S. Special Operations Command (SOCOM), NPS has developed the Tactical Network Topology (TNT) series of experiments aimed at providing the warfighter information solutions for the battle space. The NPS LRV was derived from an operational requirement to have a mobile C4I/ISR platform that provides enhanced real-time information sharing to tactically employed units. Total force combat effectiveness is growing more reliant on agile means of information sharing. Wireless communications and collaborative technologies are essential to ensuring dynamic...

The Impact of Credit Information Sharing Reforms on Firm Financing?

Martinez Peria, Maria Soledad; Singh, Sandeep
Fonte: World Bank Group, Washington, DC Publicador: World Bank Group, Washington, DC
Tipo: Publications & Research :: Policy Research Working Paper; Publications & Research
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This paper analyzes the impact of introducing credit information-sharing systems on firms' access to finance. The analysis uses multi-year, firm-level surveys for 63 countries covering more than 75,000 firms over the period 2002-13. The results reveal that credit bureau reforms, but not credit registry reforms, have a significant and robust effect on firm financing. After the introduction of a credit bureau, the likelihood that a firm has access to finance increases, interest rates drop, maturity lengthens, and the share of working capital financed by banks increases. The effects of credit bureau reforms are more pronounced the greater the coverage of the credit bureau and the scope and accessibility of the credit information-sharing scheme. Credit bureau reforms also have a greater impact on firms' access to finance in countries where contract enforcement is weaker. Finally, there is some evidence that the effects of credit bureau reform are more pronounced for smaller, less experienced, and more opaque firms.

Cross Border Banking Supervision : Incentive Conflicts in Supervisory Information Sharing between Home and Host Supervisors

D'Hulster, Katia
Fonte: Banco Mundial Publicador: Banco Mundial
Tipo: Publications & Research :: Policy Research Working Paper
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The global financial crisis has uncovered a number of weaknesses in the supervision and regulation of cross border banks. One such weakness was the lack of effective cooperation among banking supervisors. Since then, international bodies, such as the G-20, the Financial Stability Board and the Basel Committee have actively promoted the use of supervisory colleges. The objective of this paper is to explore the obstacles to effective cross border supervisory information sharing. More specifically, a schematic presentation illustrating the misalignments in incentives for information sharing between home and host supervisors under the current supervisory task-sharing anchored in the Basel Concordat is developed. This paper finds that in the absence of an ex ante agreed upon resolution and burden-sharing mechanism and deteriorating health of the bank, incentive conflicts escalate and supervisory cooperation breaks down. The promotion of good practices for cooperation in supervisory colleges is thus not sufficient to address the existing incentive conflicts. What is needed is a rigorous analysis and review of the supervisory task-sharing framework...

Information Sharing and the Stability of Cooperation in Research Joint Ventures.

ATALLAH, Gamal
Fonte: Université de Montréal Publicador: Université de Montréal
Tipo: Artigo de Revista Científica Formato: 209164 bytes; application/pdf
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The model studies information sharing and the stability of cooperation in cost reducing Research Joint Ventures (RJVs). In a four-stage game-theoretic framework, firms decide on participation in a RJV, information sharing, R&D expenditures, and output. An important feature of the model is that voluntary information sharing between cooperating firms increases information leakage from the RJV to outsiders. It is found that it is the spillover from the RJV to outsiders which determines the decision of insiders whether to share information, while it is the spillover affecting all firms which determines the level of information sharing within the RJV. RJVs representing a larger portion of firms in the industry are more likely to share information. It is also found that when sharing information is costless, firms never choose intermediate levels of information sharing : they share all the information or none at all. The size of the RJV is found to depend on three effects : a coordination effect, an information sharing effect, and a competition effect. Depending on the relative magnitudes of these effects, the size of the RJV may increase or decrease with spillovers. The effect of information sharing on the profitability of firms as well as on welfare is studied.; Cet article examine le partage de technologie et la stabilité de la coopération dans les consortiums de recherche (RJV) dont le but est la réduction des coûts de production. Dans un jeu à quatre étapes...

Building volumetric maps with cooperative mobile robots and useful information sharing : a distributed control approach based on enthropy

Rocha, Rui Paulo Pinto da
Fonte: Universidade de Coimbra Publicador: Universidade de Coimbra
Tipo: Tese de Doutorado
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This thesis addresses the problem of how to share efficiently information within a robotic system comprised of several mobile robots, which are programmed to exhibit cooperative behavior in the context of building volumetric maps of unknown environments. More specifically, it addresses the following issues: representing a probabilistic map and improving it through efficient exploration, based on information gain maximization; distributed control of teams of cooperative mobile robots, based on an information utility criteria; and coordinated exploration, aiming at avoiding redundant sensory information and robots' interference. Robots have been developed essentially to help or substitute humans in tasks which are either repetitive or dangerous. For many of these tasks, especially those that are intrinsically distributed and complex, a team of several cooperative mobile robots ─ a cooperative multi-robot system (MRS) ─ is required to either make viable the mission accomplishment or, at least, accomplish the mission with better performance than a single mobile robot. In spite of potential advantages related with space distribution, time distribution, complex problems decomposition, robustness, reliability and cost, a MRS requires that each robot maintains a sufficient and consistent level of awareness about the mission assigned to the team and about its teammates...

Collaboration and information sharing in dyadic supply chains: A literature review over the period 2000–2012; Colaboración e información compartida en cadenas logísticas: una revisión de la literatura para el periodo 2000-2012

Montoya-torres, Jairo R.; Ortiz-Vargas, Diego A.
Fonte: Universidad Icesi; Facultad de Ciencias Administrativas y Económicas; Administración de Empresas; Gestión Organizacional Publicador: Universidad Icesi; Facultad de Ciencias Administrativas y Económicas; Administración de Empresas; Gestión Organizacional
Tipo: article; Artículo Formato: pdf; 343-354 Pág.; Electrónico
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En el campo de las cadenas de suministro, se considera que las estrategias que hacen uso de la información compartida y de la cooperación entre agentes son eficaces para incrementar los indicadores de rendimiento globales. Este artículo presenta una revisión actualizada de la literatura bibliográfica y examina el impacto de la información compartida y de las estrategias de colaboración en el desempeno de las ˜ cadenas de suministro. Se utiliza una metodología sistemática para revisar el periodo 2000-2012 para asegurar la auditoria y la reproductibilidad. También se presenta una exhaustiva clasificación de los trabajos, en la que destaca el impacto estratégico y operacional de las estructuras de colaboración. El análisis revela que determinados aspectos de la colaboración y de la información compartida, sobre los que ya se hizo hincapié diez anos atrás, requieren más investigación.; Information sharing and coordination between the agents of a supply chain are considered to be an effective strategy for improving its global performance. This paper presents an updated review of current literature examining the impacts of information sharing and collaboration strategies on supply chain dynamic performance, with particular focus on dyadic structure. To achieve this...

Information Sharing Between Automakers and Suppliers in the Process of Target Cost Management

Bonzemba, Ekutu; Okano, Hiroshi
Fonte: MIT - Massachusetts Institute of Technology Publicador: MIT - Massachusetts Institute of Technology
Formato: 1266155 bytes; application/pdf
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In order to survive in today's business environment characterized by strong competition, it is no longer enough to be an efficient company. The efficiency in the entire value chain of a company is necessary to satisfy today's demanding customer in term of quality-cost-time. One of the tools used by many Japanese companies since the 1960s to satisfy the quality-cost-time requirements is the proactive cost management approach, widely known as Target Cost Management (TCM). While many researches related to TCM have been conducted during this last decade, they are more focused on the TCM process of top companies in a value chain. The importance of suppliers' involvement into the TCM process of their customers is recognized, but it is still under-explored. In this paper, an attempt is made to explore how suppliers in the Japanese automobile industry contribute to the effectiveness of TCM process of the auto-makers through information sharing between the two parties.

Information sharing promotes prosocial behaviour

Szolnoki, Attila; Perc, Matjaz
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/08/2013 Português
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More often than not, bad decisions are bad regardless of where and when they are made. Information sharing might thus be utilized to mitigate them. Here we show that sharing the information about strategy choice between players residing on two different networks reinforces the evolution of cooperation. In evolutionary games the strategy reflects the action of each individual that warrants the highest utility in a competitive setting. We therefore assume that identical strategies on the two networks reinforce themselves by lessening their propensity to change. Besides network reciprocity working in favour of cooperation on each individual network, we observe the spontaneous emerge of correlated behaviour between the two networks, which further deters defection. If information is shared not just between individuals but also between groups, the positive effect is even stronger, and this despite the fact that information sharing is implemented without any assumptions with regards to content.; Comment: 14 pages, 7 figures; accepted for publication in New Journal of Physics

Understanding interdependency through complex information sharing

Rosas, Fernando; Ntranos, Vasilis; Ellison, Christopher J.; Pollin, Sofie; Verhelst, Marian
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/09/2015 Português
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The interactions between three or more random variables are often nontrivial, poorly understood, and yet, are paramount for future advances in fields such as network information theory, neuroscience, genetics and many others. In this work, we propose to analyze these interactions as different modes of information sharing. Towards this end, we introduce a novel axiomatic framework for decomposing the joint entropy, which characterizes the various ways in which random variables can share information. The key contribution of our framework is to distinguish between interdependencies where the information is shared redundantly, and synergistic interdependencies where the sharing structure exists in the whole but not between the parts. We show that our axioms determine unique formulas for all the terms of the proposed decomposition for a number of cases of interest. Moreover, we show how these results can be applied to several network information theory problems, providing a more intuitive understanding of their fundamental limits.; Comment: 39 pages, 4 figures

System towards the touristic information sharing amongst portuguese speaking countries; Sistema para a partilha de informação turística em países de expressão portuguesa 10.5007/1518-2924.2008v13nesp2p23

Moura, M. M. M.; CSI, FCT, Campus de Gambelas; Lima, Valter; FCT, UALG - Lisboa; Mendes, Júlio; FEUA, Campus de Gambelas; Leiria, Ana; CSI, FCT, Campus de Gambelas; Silva, João Albino; FEUA, Campus de Gambelas
Fonte: Departamento de Ciência da Informação – UFSC Publicador: Departamento de Ciência da Informação – UFSC
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/01/2008 Português
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Global and efficient communication has always been a goal to expanding touristic destinations in order to potentiate the growth of the sector and the sustainable development of the regions concerned. With the emergence of the new information technologies, the creation of networks for information sharing became a reality. This facilitated the implementation of benchmarking actions and programs between touristic destinations involved in cooperation projects. The Internet development, as an inexpensive infrastructure, allowed breaking many access barriers faced by many touristic destinations, due to the lack of investment funds in these areas. The inherent cost of design, installation and maintenance of networked computer systems are currently a fraction of the initial implementation cost of a traditional system, even allowing for the standardization of all the technology applied. The article exposes the problematical issues concerning the creation of networks for information sharing and proposes a model for the development of a distributed information system as the support infrastructure to such a network. Thus, the organized exploitation of a decentralized information flow allows the creation of synergies amongst the agents involved and...