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  • 1
    Electronic Resource
    Electronic Resource
    Is Patient Outcome Adversely Affected by Early Versus Late Prosthesis-Patient Mismatch? (2004)
    350 Main Street , Malden , MA 02148-5020 , USA and 9600 Garsington Road , Oxford OX4 2XG , England . : Blackwell Science Inc
    Journal of cardiac surgery 19 (2004), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0886-0440.2004.04021.x
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  • 2
    Electronic Resource
    Electronic Resource
    Determinants of Incomplete Left Ventricular Mass Regression Following Aortic Valve Replacement for Aortic Stenosis (2005)
    350 Main Street , Malden , MA 02148-5020 , USA and 9600 Garsington Road , Oxford OX4 2XG , England . : Blackwell Science Inc
    Journal of cardiac surgery 20 (2005), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Objective: Incomplete regression of left ventricular hypertrophy (Abn-LVMI) following AVR for aortic stenosis (AS) may decrease long-term survival. In this prospective study, we identified the predictors of Abn-LVMI. Methods: Between 1990 and 2000, 529 patients undergoing AVR for AS had clinical and hemodynamic data collected prospectively. Preoperative and annual postoperative transthoracic echos were employed to assess left ventricular mass index (LVMI) and hemodynamics. Abn-LVMI was defined as the 75th percentile of the lowest postoperative LVMI (〉128 mg/m2, n = 133). All other patients were included in the normal regression group (N-LVMI). Univariate and multivariable logistic regression analyses were used to determine the predictors of Abn-LVMI. Results: Preoperative hypertension, diabetes, coronary disease, valve size, mean postoperative gradients, effective orifice area, and patient-prosthesis mismatch (PPM, indexed EOA 〈0.60 cm2/m2) did not predict Abn-LVMI. By logistic regression the most important positive predictor of Abn-LVMI was the extent of preoperative LVMI, with an odds ratio of 37.5 (p 〈 0.0001). Survival (93.4 ± 1.8% vs 94.8 ± 2.3%, p = 0.90) and freedom from NYHA III–IV (75.0 ± 3.7% vs 76.6 ± 5.3%, p = 0.60) were similar for both groups at 7 years. Conclusions: Measures of valve hemodynamics were not important predictors of incomplete regression of hypertrophy. The extent of preoperative hypertrophy was the most important predictor, suggesting that earlier surgical intervention may reduce the extent of hypertrophy postoperatively. Furthermore, the significance of LV hypertrophy to long-term survival must be reassessed, in the absence of scientific evidence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8191.2005.200485.x
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  • 3
    Electronic Resource
    Electronic Resource
    Myocardial Protection in Reoperative Coronary Artery Bypass Grafting: (2004)
    350 Main Street , Malden , MA 02148-5020 , USA and 9600 Garsington Road , Oxford OX4 2XG , England . : Blackwell Science Inc
    Journal of cardiac surgery 19 (2004), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Redo coronary artery bypass grafting (CABG) is associated with higher morbidity and mortality when compared to first-time CABG. Myocardial infarction and dysfunction contribute significantly to the increased risk of redo CABG. Results of reoperative coronary surgery have gradually improved, largely because of improvements in myocardial protection techniques. In the present review we will highlight the principles of myocardial protection in redo CABG patients with an emphasis on retrograde cardioplegia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0886-0440.2004.4052_11.x
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  • 4
    Electronic Resource
    Electronic Resource
    Management of development projects: how to meet corporate business goals? (1997)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    R & D management 27 (1997), S. 0 
    Details
    ISSN: 1467-9310
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Two contradictory elements affect development projects in the modern era. New advanced development projects require huge resources and long schedules. On the other hand, the resources available for development projects are decreasing, and intensive competition between companies results in increased required performance and new products which must be developed with short schedules. Development projects have a significant effect on a company's business goals, and therefore attract the attention of corporate managers. A significant part of managers’ time is devoted to the control of development projects. Support tools are therefore developed and used to assist managers in controlling their projects. This paper describes a control tool to help managers make decisions on development projects. The tool described is based on Microsoft's ‘Project’ software package, and was developed in-house. The package performs real-time calculations and simultaneously presents several control parameters. These parameters provide a comprehensive picture of project status. The major benefits of the control tools described are: (1) The ‘Project’ package provides the ability to work with small and combined work packages. It allows attention to be focused on small programs as well as on entire programs. (2) It complies fully with modern decentralised computer systems consisting of a central computer, local computerised networks, parallel PCs and work stations. It provides an interactive quick response ability to follow changes in project status, which result from design changes or progress updates. The control system was implemented by RAFAEL's Missiles Division two years ago, and impressive results in terms of project efficiency were achieved. These achievements play a major role in meeting the Division's business goals. The control tools described are general and can fit a large variety of projects and companies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-9310.00050
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  • 5
    Electronic Resource
    Electronic Resource
    Preconditioning to Improve Myocardial Protection (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 793 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb33526.x
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  • 6
    Electronic Resource
    Electronic Resource
    The Use of Glucose and Insulin during Hypothermic and Normothermic CABG (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 793 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb33548.x
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  • 7
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    Herbert's PROVIDENCE (1976)
    Washington, etc. : Periodicals Archive Online (PAO)
    Explicator. 35:2 (1976:Winter) 2 
    Details
    ISSN: 0014-4940
    Topics: Linguistics and Literary Studies
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1084-1976-035-02-000001
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  • 8
    Electronic Resource
    Electronic Resource
    Expert system to match robots and to synchronize their operations to pick and place large parts (1996)
    Springer
    Journal of intelligent and robotic systems 15 (1996), S. 165-179 
    Details
    ISSN: 1573-0409
    Keywords: Expert-systems ; transportation systems ; real-time control systems ; large parts transportation ; robots' synchronized operations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The operation of pick and place large parts is a very common operation on the manufacturing floor. The efficiency of the pick and place operation affects the efficiency of the entire manufacturing floor. Large parts in terms of this research are parts which must be transported by two robots. This paper concludes the development of an expert system and a numerical simulation to assign two available robots to perform the pick and place operations of large parts. The developed expert system consists of a knowledge-base structured in interrelated frames to define large manufacturing systems and an inference-engine to perform the robots matching and their performances monitoring. Matching robots considerations can not be performed by numerical algorithms in real time systems, because they are major computation time consumers. Therefore, unmatched robots can be assigned by the numerical algorithms to perform inefficient pick and place operations. The expert system and the numerical simulation were programmed, and many computer runs were performed to explore the efficiency of the two systems in a large variety of manufacturing systems. The achieved results show that the expert system has no advantage in assigning matched robots to perform the pick and place operations in systems characterized by very short machine process times (0.5 moment to 1 moment). If such short machine process times are relevant, the knowledge-base is updated very frequently, and the inference-engine reasoning processes can not be initiated. For longer machine process times, the frequency of knowledge-base changes is reduced, and the inference-engine reasoning processes can be initiated without delays. Therefore, the advantages of the expert system become significant if machine process times are extended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00125492
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  • 9
    Electronic Resource
    Electronic Resource
    Intelligent Jig System to Automate Flexible Manufacturing System (1999)
    Springer
    Journal of intelligent and robotic systems 25 (1999), S. 61-77 
    Details
    ISSN: 1573-0409
    Keywords: jig system ; tools supply ; expert system ; assembly cell ; manufacturing floor ; manufacturing floor simulator ; flexible manufacturing cell (FMC)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Jig pallet systems are intended for the automatic, complete machining or assembly of parts families in the area of medium and large scale manufacturing. Their distinctive feature is that several machine tools, or assembly machines, are linked together to generate an overall system by means of common tool and workpiece supply with integrated computer control. A jig pallet system is considered to be intelligent, if its central processor is equipped with a knowledge-base and an inference-engine. A jig pallet system was structured. It consists of a central processor, tools supply system, workpiece supply system, manufacturing cell which includes four work stations and a local area network. A knowledge-base and inference-engine were developed to reason the next position of jig pallet systems. The jig pallet system, with its incorporated knowledge-base and inference-engine, was tested for a large variety of operational parameters to explore the ability of the central processor to control participant's operations. The conclusion which is derived from these tests is that the central processor can control and optimize participant's operation in real time with minor effects on the system efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008065227528
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  • 10
    Electronic Resource
    Electronic Resource
    Does Lethal Reperfusion Injury Exist in Cardiac Surgery? (1997)
    Springer
    Journal of thrombosis and thrombolysis 4 (1997), S. 87-88 
    Details
    ISSN: 1573-742X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017519021978
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