Laboratory experiments were conducted to compare the performance of four different mechanisms of meeting scheduling: 1) the communication centered system (face-to-face) wherein individuals negotiate among themselves a...
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Laboratory experiments were conducted to compare the performance of four different mechanisms of meeting scheduling: 1) the communication centered system (face-to-face) wherein individuals negotiate among themselves and arrive at a consensus on the timing of the meeting; 2) e-mail as the sole communication medium with no structured support; 3) the calendar-oriented scheduling mechanism with e-mail connectivity; 4) automated scheduler. The experiment is implemented based on the real task of meeting scheduling among project groups that had to meet several times during a semester to work on their project (regardless of this experiment). Three post-experimental surveys are used to measure satisfaction with the agreed meeting time, perceived efficiency in coordination time and process, and scheduling conflict for the scheduling methods. T-tests indicate that, even with higher conflicts among the group members, participants are more satisfied with the meeting time reached during the face-to-face meeting and overwhelmingly concurred on the high efficiency of face-to-face coordination process.
The objectives of this research are to develop a knowledge-based group decision support system for site selection and to explore the effectiveness of the system. The GDSS uses an enhanced Technique for Order Preferenc...
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The objectives of this research are to develop a knowledge-based group decision support system for site selection and to explore the effectiveness of the system. The GDSS uses an enhanced Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to identify a small subset of candidate locations from the location database. A knowledge-based system (KBS) was created to check the degree of group consensus, which is determined by some fuzzy scalar measures. The output from the KBS shows the performance of group commitment on the weighting of location factors. The decision makers are then requested for further evaluating the candidate locations via computer-mediated group discussion. To evaluate the performance of the KBS in the GDSS, an empirical study was designed and implemented. The results show that GDSS supported groups using both TOPSIS and KBS enhancements had better outcomes than GDSS supported groups using only TOPSIS enhancement.
The study proposes a combination of the function points model for software estimation with the ADISSA methodology for systems analysis and design. This combined approach, which is supported by a software tool, enables...
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The study proposes a combination of the function points model for software estimation with the ADISSA methodology for systems analysis and design. This combined approach, which is supported by a software tool, enables one to estimate various software metrics, such as size, effort, and duration, in the early stages of systems development, by basing them on the products of a thorough system analysis and design process.
In this paper we discuss the optimal design problem of material distribution system which consists of customers and a number of inventory centers to be located. We formulate this problem as a mixed integer programming...
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In this paper we discuss the optimal design problem of material distribution system which consists of customers and a number of inventory centers to be located. We formulate this problem as a mixed integer programming model and propose an evolutionary program method which absorbs ideas of Genetic Algorithm (GA) and Evolutionary Strategy (ES) as well as traditional techniques to solve it. Compared with the alternative location-allocation heuristic method, this evolutionary program method is more promising in finding better solution which can be regarded as near global solution. We demonstrate the effectiveness of the evolutionary program method by numerical experiments.
Vertical information management (VIM) is a term coined to describe a particular set of information management activities. These activities support decision makers working within various levels of a management hierarch...
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Vertical information management (VIM) is a term coined to describe a particular set of information management activities. These activities support decision makers working within various levels of a management hierarchy, who seek information from potentially large, distributed heterogeneous, and federated information sources. Decision makers usually require information beyond what is stored. Yet, the collected data is a valuable resource. This as particularly important for scientific experimental results where the samples are expensive to collect and analyze, as in environmental remediation and restoration. One sample from a storage tank containing nuclear waste can cost over $1000000. A fundamental assumption of the work is that high-level information requests may involve data that is extracted or derived from underlying information sources, as well as data that is not present in the underlying information sources (referred to as "gaps"). The authors observe that current practice often involves manual processing and negotiation to select relevant information and to fill gaps. They present a VIM framework for the specification, refinement, and partitioning of a high-level information request resulting in the extraction, collection, aggregation, and abstraction of the underlying data. This framework captures the specification of the information and the summarization steps used in a highly manual process to leverage the investment against future information requests. The work has been supported, in part, by the department of Energy's Pacific Northwest National Laboratory.
作者：
Schulte, DPSkolnick, AHe has supported the development and operation of several naval systems
including advanced component selection for Trident II fire control and navigation systems. He served as branch manager of the Surface Ship ASW Combat System Branch which acted as the acquisition engineering agent for the AN/SQQ-89 Surface Ship Anti-Submarine Warfare Weapon System. He was then selected to manage the Module Engineering Department which provided engineering support to numerous naval systems including the AN/BSY-1 Submarine Combat System and the Trident II fire control and navigation system. He then served as the deputy program manager for NAVSEA Progressive Maintenance (2M/ATE). He holds a B.S. degree in Electrical Engineering from Purdue University and currently is pursuing a Maste's degree in Public Environmental Affairs at Indiana University—Purdue University
Indianapolis. He served at Applied Physics Laboratory/The Johns Hopkins University in missile development
then aboard USS Boston (CAG-1) and played leading roles in several weapon system developments (Regulus Terrier Tartar Talos) inertial navigation (Polaris) deep submergence (DSRV) and advanced ship designs (SES). He later was director Combat System Integration Naval Sea Systems Command and head Combat Projects Naval Ship Engineering Center. He led the Navy's High Energy Lasers and Directed Energy Weapons development efforts. He was vice president advanced technology at Operations Research Inc. and vice president maritime engineering at Defense Group Inc. before starting SSC in 1991. Dr. Skolnick holds a B.S. degree in Mathematics and Economics
Queens College an M.A. degree in Mathematics and Philosophy Columbia University an M.S. degree in Electrical/Aeronautical Engineering U.S. Naval Postgraduate School and a Ph.D. in Electrical Engineering and Applied Mathematics from Polytechnic University in New York. He is the author of many published papers on engineering design issues source selection procedures and large-scale complex technology problems
The Fleet continues to require high performance systems that can operate with dependability in the seas' unforgiving environments and under hostile action. Those demands are not new. What has changed is the urgent...
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The Fleet continues to require high performance systems that can operate with dependability in the seas' unforgiving environments and under hostile action. Those demands are not new. What has changed is the urgent priority formerly assigned to national defense issues. The arguments for continued superpower military strength are now roiled in politics along with unsettled budgets and uncertain force level projections. Current expectations revolve about indefinite fiscal and operational issues (difficult funding constraints and broadband threats). In the actual event of ''doing more with less,'' a practical response is to apply the creative power available from sound engineering judgement and the crucible of experience to the immediate needs of the Fleet. The attempt to shorten the path between advanced development effort and Fleet use has been tried occasionally in the past, often, without exemplary results. The Sustainable Hardware and Affordable Readiness Practices (SHARP) program, is a generic R&D effort under OpNav sponsorship that has been working steadily on sensible solutions to product engineering problems. Armed today with fast-time, large-scale computation abilities and modern tools for technical problem solving coupled with specialized engineering knowledge, it has been refreshed and is underway satisfying existing Fleet needs. The relationship between fully responsive engineering services and current operational needs is always demanding. The connection between advanced engineering development (6.3 category funds) and immediate Fleet usage brings added complexity and challenge, both technical and organizational. Illustrative examples of affordable engineering solutions to ''retain, revise, replace or retire'' questions are presented within the context of both Fleet realities and budgetary limitations. The discussion covers legacy system support, civil/military considerations and Fleet maintenance issues. It describes the substantial and critical payoffs i
In this paper, we introduce a new notion of local optimality and demonstrate its application to the problem of finding optimal independent sets and vertex covers in k ‐claw free graphs. The maximum independent set pr...
作者：
Calvano, CNRiedel, JSProfessor Charles N. Calvano
Capt. USN (Ret.): of the Naval Postgraduate School is responsible for a program in Total Ship Systems Engineering. He is a graduate of the Naval Academy who served as a surface warfare officer. After completion of his graduate education at MIT he became an Engineering Duty Officer and served at Boston Naval Shipyard in several capacities. He was the Repair Facilities Advisor to the Vietnamese Navy the Project Officer for construction of nuclear powered guided missile cruisers (CGNs) at the Supervisor of Shipbuilding
Newport News Virginia and served on the staff of the Commander
Naval Surface Forces U.S. Atlantic Fleet and later at the Supervisor of Shipbuilding in Portsmouth Virginia in maintenance and overhaul management positions. He was Officer in Charge of the Annapolis Laboratory of the David Taylor Research Center and Commanding Officer of the Engineering Duty Officer School. He retired from active duty in October 1991 after serving in the Naval Sea Systems Command as the Director of the Ship Design Group and of the Advanced Concepts and Technology Group. Lt. Jeffrey S. Riedel
USN:is an Engineering Duty Officer currently assigned to the Supervisor of Shipbuilding Bath Maine. He obtained his B.S. degree in Marine Engineering from Maine Maritime Academy in 1986 and his M.S. degree in Mechanical Engineering plus a Mechanical Engineer's degree from the Naval Postgraduate School in 1993. Lt. Riedel's naval career has included duty aboaqrd USS Wainwright (CG 28) as auxiliaries officer damage control assistant and main machinery officer. Currently he serves as the assistant production officer at SUPSHIP Bath in charge of DDG 51 class construction and delivery.
This paper describes the design of a Regional Deterrence Ship (RDS 2010) for the 2010 timeframe. The requirements for the design were for a ship to operate in littoral areas of the world with a mission of deterring re...
This paper describes the design of a Regional Deterrence Ship (RDS 2010) for the 2010 timeframe. The requirements for the design were for a ship to operate in littoral areas of the world with a mission of deterring regional conflicts and of hampering the efforts of the aggressor in such a conflict. In addition the ship's mission included the evacuation of friendly personnel as hostilities become likely. The problem countering the littoral threat during times of constrained budgets is addressed. Top level requirements for the design, generated in parallel with ''.... From the Sea'' [1], were used to set the design goals. The paper describes the manner in which littoral warfare changes the nature of the challenges faced by Navy surface combatants, including a ship such as the RDS 2010. A number of factors become more crucial design concerns than for blue water ships, including reduced reaction times, likelihood of attack from hidden land sites, shallow water mines and shallow water USW Certain other factors become less critical in littoral areas and this also has ship design impacts. While some present ship designs can perform some of the tasks needed in a littoral warfare/regional conflict environment, none represents a completely integrated design (hull, mechanical & electrical;combat systems;fiscal and manning constraints;reduced vulnerability;robust self-defense etc.) for a vessel stationed in waters that, without warning, can become hostile. After describing the mission requirements to which the RDS 2010 was designed, the paper discusses the controlling design philosophy and decisions and describes the process used to assess threats to the ship. The process of combat system selection, against the backdrop of expected threat scenarios, is described and the intended approach to integration of the combat system is discussed. In recognition that decreased reaction times and surprise attacks are likely to threaten a ship engaged in regional deterrence, discussions oi
作者：
SHOVAL, PInformation Systems Program
Department of Industrial Engineering and Management Ben-Gurion University of the Negev Beer-Sheva 84105 Israel
This paper describes a structured method for designing subsystems from a whole system, which extends ADISSA methodology for systems analysis, design and prototyping, The design of a subsystem includes: (a) definition ...
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This paper describes a structured method for designing subsystems from a whole system, which extends ADISSA methodology for systems analysis, design and prototyping, The design of a subsystem includes: (a) definition of the transactions, or processes, that belong to the subsystem, thus determining the boundaries of the subsystem;(b) design of the subsystem user-interface, a sub-menu-tree, derivable from the menu-tree interface of the global system;and (c) design of the database sub-schema, derivable from the global database schema. The method is supported by a CASE tool, enabling automatic and interactive design and prototyping of the subsystems.
Training is often the performance improvement solution of choice, yet how often does the best training not yield performance improvement? There is a growing body of evidence that indicates that many times performance ...
Training is often the performance improvement solution of choice, yet how often does the best training not yield performance improvement? There is a growing body of evidence that indicates that many times performance improvement can be achieved faster, cheaper, and better by altering factors in the workplace than by training. This article describes an activity designed to illustrate the importance of workplace factors in improving performance and a study that demonstrates its validity. Results of the study indicate that two‐thirds of the participants believed the environmental factors of information, resources, and incentives needed improving in order to enable them to improve their own performance.
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