2011 IEEE International Systems Conference最新文献

{"title":"Integration of operations in process systems: Complexity and emergent properties","authors":"A. Hessami, N. Karcanias","doi":"10.1109/SYSCON.2011.5929053","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929053","url":null,"abstract":"The problem of system Integration in the context of an Industrial Enterprise is a multidimensional problem with fundamental dimensions those of: (i) Purpose, goals and objectives, (ii) Overall process operations, (ii) Overall System Design/Redesign, (iii) Information, Data and Software, and (iv) Verification, validation and assurance. Each of the above areas is addressed by respective groups which consider their area as representing the entirety of the problem and they frequently ignore the other important dimensions. The aim of this paper is to consider first the general problem of integration from all its fundamental aspects and focus on the key paradigm of Global Operations. Within this area we consider the issues of system organization and in particular the problems relating to hierarchical organization of the different operational functionalities, the issues of aggregation and disaggregation and the related problems of the “top-down” and “bottom up” approaches. System complexity is considered within this framework and the notion of emergent properties is then considered as a problem of aggregation of behaviours, which may be also seen as projections within the setup of a control and information architecture. Such an architecture is defined for the multi-level hierarchical organisational structure that we consider. We show that systems and control concepts and problems play a central role the development of an overall integration methodology and interpreting the features of the different emergent properties. The subject of modelling emerges with a central role in the effort to develop a methodology for systems integration, as well as quantifying the predictors of relevant emergent properties. The approach introduced here is intimately linked to Multilevel hybrid systems (Hierarchy of Operations), and provides a complementary dimension to issues of System Design (and Re-design) dominated by the theory of Structure Evolving systems [10] (in the total Design and Life-cycle analysis) emerges as the central approach. This paper provides an overview of the subject area and focuses on the development of the general conceptual framework for integration. We additionally develop and propose a systems framework for the evolutionary integration in this paper.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127962780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robustness for large scale UAV autonomous operations","authors":"Sunghun Jung, K. Ariyur","doi":"10.1109/SYSCON.2011.5929115","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929115","url":null,"abstract":"Unmanned aerial vehicles (UAVs) need multiple operators as of today. Because of limitations of human attention and sensory cueing the operators cannot use all of the data coming in through these sensors. Large scale autonomy would mean the following: fewer operators, larger areas of coverage, and more vehicles. Rigorous optimization of decision theory based approaches to handling this problem suffer from speed limits to real-time computations. Soft-computing methods based on heuristics (AI, reasoning, neural networks and fuzzy logic) are able to handle certain circumstances but cannot supply any guarantees of performance in unstructured environments. We provide solutions based on rigorous approaches, but avoid heavy real-time computation through off line processing. For mapped regions, we convert maps into traversability graphs using trapezoidal map/voronoi type algorithms. We then find the shortest permissible paths for different vehicles using Dijkstra's algorithm and then preening the allowable paths using constraints on individual vehicles. Out third step consists in determining the minimum time taken by a given vehicle over those paths. We insert margins of safety at each level of this hierarchy: buffer zones (size of buffer zone is a ten meters extended polygon around each building) around mapped structures to account for map errors; buffer zones around flight paths to account for position uncertainty of vehicles; performing 1-D optimal control within limits of the vehicles performance so that vehicles can slow down or speed up in response to unexpected events.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128663490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bounding inertial drift with human gait dynamics for personal navigation","authors":"Yan Cui, K. Ariyur","doi":"10.1109/SYSCON.2011.5929113","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929113","url":null,"abstract":"The integration of inertial measurements to estimate position and orientation is limited in its accuracy by the biases in the inertial instruments. The gyroscopes and accelerometers used in personal navigation systems do not have extremely high fidelity. The drift in position estimates grows as the cube of time elapsed without absolute measurements such as GPS to bound it. However, one source of inertial aiding has largely been overlooked, which is the unique dynamics of gait for each individual. Based on the record of inertial measurements in walking or running, the relationships between stride length and stride interval for individuals is developed. We designed an integrated system with corrected human gait model to limit the drift of inertial integration with the assistance of this relationship. Analysing in individual step and corrected with gait model can effectively minimize the error of position estimating.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129617838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A stakeholder's approach to systemic governance in extended enterprises","authors":"M. Chikhale, M. Mansouri, A. Mostashari","doi":"10.1109/SYSCON.2011.5929094","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929094","url":null,"abstract":"Over an extended period of time, stakeholder theory has been successful in contributing significantly towards management of organizational development but failed to achieve the required theoretical status. The primary purpose of this paper is to introduce the concept of governing extended enterprises by taking a systemic approach from the stakeholder's perspective highlighting stakeholder commitment and interests. Through this paper, we make a conscious effort to bring up the inter-dependencies among several factors that aid governance of extended enterprises thereby accounting for organizational wealth and enhancing value creating capacity for the stakeholders. As a result, it leads to the generation of significant inter-relationships among all possible stakeholders over a broader system of networks.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124298072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy security of military and industrial systems: Multicriteria analysis of vulnerability to emergent conditions including cyber threats","authors":"J. Lambert, Christopher W. Karvetski, M. Hamilton, I. Linkov","doi":"10.1109/SYSCON.2011.5929131","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929131","url":null,"abstract":"This paper describes decision analysis and scenario analysis for energy security of industrial and military installations. The approach compares potential investments across multiple criteria and finds the impact of emergent and future conditions to the prioritization of investments. Emergent conditions include cyber threats, market/economic drivers, policies and regulations, environment, and technologies.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133790900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Do agile software development practices increase customer satisfaction in Systems Engineering projects?","authors":"M. Kohlbacher, Ernst Stelzmann, Sabine Maierhofer","doi":"10.1109/SYSCON.2011.5929091","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929091","url":null,"abstract":"This paper investigates the effects of applying agile software development practices within Systems Engineering projects. In particular it should be found out whether agile methods are able to mitigate negative effects of requirement changes on project performance. Customer satisfaction is chosen as performance factor. 72 system developing companies are surveyed that develop products consisting of hard- and software. Since agile methods have been successfully applied within software development our hypothesis is that they could also be successfully applied within Systems Engineering. Our study focuses on 6 specific agile practices and their ability to improve customer satisfaction in complex hard- and software projects. It is shown that some of them have a positive effect on customer satisfaction but we do not find evidence for others.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134440772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimal control of a regional power microgrid network driven by wind and solar energy","authors":"H. Dagdougui, R. Minciardi, A. Ouammi, R. Sacile","doi":"10.1109/SYSCON.2011.5929056","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929056","url":null,"abstract":"In this paper, a model to support optimal decisions in a network of microgrids is formalized as an original discrete and centralized problem defined here as cooperative network of smart power grids problem. The control variables are the instantaneous flows of power in the network of microgrids, which can be obtained from the solution of a linear quadratic Gaussian (LQG) problem on a fixed time horizon. The state is represented by the energy stored in each microgrid. The goal is to minimize the variations of the energy stored in each storage device from a reference value, as well as to minimize the exchange of power between the microgrids. An application of the model is proposed taking into account wind and solar data in three sites in Liguria region (Castellari, Capo Vado and Savona). It is assumed that each microgrid is composed by a renewable hybrid energy system, a cluster of 100 households and a storage device.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132797770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cognitive context modeling in the socio-technical systems","authors":"B. Heydari, J. Mitola, A. Mostashari","doi":"10.1109/SYSCON.2011.5929119","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929119","url":null,"abstract":"This paper proposes an architecture for modeling the enterprise context. This model is comprised of a quasi-static module which is shared by all the documents in an enterprise and a dynamic module that is document specific. The quasi-static module is then modeled based on the assumption that the context is formed as in a distributed cognitive system. The modeling tools used are taken from the field of cognitive linguistics.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124870052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integration of Unmanned Aircraft System (UAS) in non-segregated airspace: A complex system of systems problem","authors":"K. Ramalingam, R. Kalawsky, C. Noonan","doi":"10.1109/SYSCON.2011.5929108","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929108","url":null,"abstract":"Unmanned Aircraft System (UAS) has been primarily used in the military domain, and their use has increased tremendously in the last decade. UAS provide several distinct operational capabilities and cost advantages compared to manned aircrafts in most situations. It has long been postulated that use of Unmanned Aircraft Systems (UAS) in the civil domain will enable overall improvement in effectiveness of performance in many civil applications currently performed by manned aircrafts and it will provide potential long term cost savings for the UAS operators. UAS would also give rise to whole host of new applications, which have not yet been envisaged. However the civil UAS industry has not yet started due to the restricted access of UAS in segregated areas of the national airspace and inability to routinely access national airspace alongside manned aircrafts. This paper proposes that the integration of UAS in nonsegregated airspace is a complex system-of-systems problem with a level of difficulty well beyond the technical challenges involved in the development, implementation and validation of the system. The routine operation of UAS in national airspace is as much of a political and emotional issue because the aviation regulatory authorities are swayed as much by current political environment and public perception towards the issue. Beyond public concerns, the system design problem is inherently complex. The size and lower costs are two major benefits of UAS. However to design a UAS which has high safety standards and follows same level of equivalence and transparency as manned aircrafts without compromising on two major advantages of UAS, is a big challenge.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114672668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating risks associated with Extended Enterprise Systems (EES)","authors":"A. Ganguly, M. Mansouri","doi":"10.1109/SYSCON.2011.5929075","DOIUrl":"https://doi.org/10.1109/SYSCON.2011.5929075","url":null,"abstract":"Extended Enterprise System (EES) represents a network of interconnected enterprises functioning in harmony towards achieving a common objective. The efficiency of an EES lies in the ability of all its constituent enterprise systems working effectively in order to achieve a common objective. However, it is also essential to consider uncertainties that might lead to negative consequences and subsequent financial losses to the EES. Therefore, assessing the risks that might lead to the malfunctioning of an EES is one of the major challenges that a business enterprise might encounter. The paper is a variation of a previous research conducted by the authors on risk evaluation and proposes an extended enterprise-centric risk evaluation model through identification and prioritization of a set of critical risks that might affect the efficient functioning of an EES. The proposed model had a twofold contribution in the domain of EES. Firstly, policy-makers can use the findings of the research as a guideline to identify the critical risk involved with the functioning of an EES, which in turn can potentially escalate its vulnerability in the industry. Secondly, the identified risks along with their subsequent ranking to determine their relative criticality can be used by decision-makers to develop risk mitigation strategies for the EES.","PeriodicalId":109868,"journal":{"name":"2011 IEEE International Systems Conference","volume":"437 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124253097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}