Papers by Virginio Chiodini
[1989] Proceedings. The Fifth Conference on Artificial Intelligence Applications
SCORE is a prototype dynamic scheduling system with rapid execution time that was developed for a... more SCORE is a prototype dynamic scheduling system with rapid execution time that was developed for a high-volume manufacturing plant. The test-case environment is characterized by the complexity and size of the process structure, the high speed of the production flows, and the frequency of unexpected events that disturb the production process. The system has been developed with capabilities for: generating the resource allocation schedules for the shop floor; schedules generating the monitoring activities schedule to be performed by the shop floor controllers; monitoring the events occurring on the shop-floor and anticipating their impact on the manufacturing process; and performing corrective actions to the resource schedules whenever production is jeopardized by unexpected events. The system performs a closed-loop interaction with the network of shop-floor-controllers and work-center processors. The architectural approach adopted enables the integration and cooperation of multiple problem-solving techniques under the coordination of an interrupt-driven system supervisor.<<ETX>>
Farmeconomia. Health economics and therapeutic pathways, 2011
Farmeconomia. Health economics and therapeutic pathways, 2011
International Journal of Cardiology, 2011
Value in Health, 2007
tions highlighted that response-shift effects may be a result of the instruments used. Individual... more tions highlighted that response-shift effects may be a result of the instruments used. Individualized (generic) QoL -instruments can be prone to response-shift effects due to their conceptualization addressing a broad range of life aspects. In contrast, diseasespecific PRO measures focusing on specific aspects of disease are less affected by response-shift phenomena.
Value in Health, 2009
OBJECTIVES: To assess the role of hospital, patient, payer and clinical factors on inpatient hosp... more OBJECTIVES: To assess the role of hospital, patient, payer and clinical factors on inpatient hospital lengths of stay (LOS) and total charges in adults undergoing heart transplantation. METHODS: This analysis utilized the nationally representative inpatient hospital discharge records from the Agency for Healthcare Research and Quality (AHRQ) Healthcare Cost and Utilization Project (H-CUP) Nationwide Inpatient Sample (NIS) from 2002 to 2005. All patients above 18 years of age receiving a heart transplantation procedure were selected for inclusion. Specifi c variables of interest included patient demographics (e.g., age, sex, race, income), hospital characteristics (e.g., rural/urban), payer (e.g., Medicare, commercial, uninsured), procedures, diagnoses, case-mix risk adjustment (e.g., all patient refi ned DRG (APR-DRG)), and inpatient mortality. Outcomes analyzed were LOS and total charges. Gamma and negative binomial generalized linear models with log-links were employed with an a priori alpha of 0.05 for statistical signifi cance. Human subjects approval was obtained from the University of Arizona. RESULTS: Overall, 5911 patients underwent a heart transplantation between 2002-2005, with 74.1% of these patients being males. Mean charges were $332,617 $212,403. Average LOS was 41.76 50.16 days. Inpatient mortality was 5.4%. Regression analyses indicated signifi cant associations between charges and number of procedures (Incidence Rate Ratio (IRR) 1.074, 95% CI 1.059-1.089), inpatient mortality (IRR 1.274, 95% CI 1.094-1.483), APR-DRG (IRR 1.126, 95% CI 1.061-1.195), African-American race (IRR 0.871, 95% CI 0.783-0.969), and hospital location (IRR small metropolitan 0.799, 95% CI 0.731-0.874, IRR micropolitan/rural 0.741, 95% CI 0.661-0.831). These analyses also indicated signifi cant associations between LOS and number of diagnoses (IRR 0.979, 95% CI 0.960-0.997), number of procedures (IRR 1.104, 95% CI 1.082-1.126), APR-DRG (IRR 1.291, 95% CI 1.136-1.467), and hospital location (IRR micropolitan/rural 0.779, 95% CI 0.635-0.958). CONCLUSIONS: This investigation of 5911 adult heart transplant patients suggests that several factors are signifi cantly associated with LOS and charges. Continued research, particularly subgroup analyses and long term follow-up, are warranted.
This paper presents an Agent Development Environment (ADE) for building distributed multi-agent a... more This paper presents an Agent Development Environment (ADE) for building distributed multi-agent applications. ADE provides a predefined class hierarchy of agents and agent parts, an agent communications "middleware", and a graphical language for designing and developing agent behavior based on the Grafcet standard. In addition, ADE provides a distributed simulation environment to test agent-based applications, and a center to deploy agents on the network. In this paper we provide a brief overview of ADE and present two Adaptive Control applications developed with ADE.
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Papers by Virginio Chiodini