The Experts below are selected from a list of 194676 Experts worldwide ranked by ideXlab platform

Pedro J Mago - One of the best experts on this subject based on the ideXlab platform.

  • building energy Management using increased thermal capacitance and thermal Storage Management
    Buildings, 2018
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study simulates an increased thermal capacitance (ITC) and thermal Storage Management (TSM) system to reduce the energy consumed by air conditioning and heating systems. The ITC/TSM is coupled with phase change materials (PCM), which enable tank volume reduction. The transient energy modeling software, the Transient System Simulation Tool (TRNSYS), is used to simulate the buildings’ thermal response and energy consumption, as well as the ITC/TSM system and controls. Four temperature-controlled operating regimes are used for the tank: building shell circulation, heat exchanger circulation, solar panel circulation, and Storage. This study also explores possible energy-saving benefits from tank volume reduction such as losses associated with the environment temperature due to tank location. Three different tank locations are considered in this paper: outdoor, buried, and indoor. The smallest tank size (five gallons) is used for indoor placement, while the large tank (50 gallons) is used either for outdoor placement or buried at a depth of 1 m. Results for Atlanta, Georgia show an average 48% required energy decrease for cold months (October–April) and a 3% decrease for warm months (May–September) for the ITC/TSM system with PCM when compared with the reference case. A system with PCM reduces the tank size by 90% while maintaining similar energy savings.

  • a first order study of reduced energy consumption via increased thermal capacitance with thermal Storage Management in a micro building
    Energies, 2015
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study uses a first-order approximation of a micro-building to investigate the major factors determining how increased thermal capacitance (ITC) with thermal Storage Management (TSM) can reduce energy consumption in locations with relatively mild weather conditions such as the southeastern part of the United States of America. In this study, ITC is achieved through water circulation between a large Storage tank and pipes embedded within the building envelope. Although ITC results in a larger dominant time constant for the thermal response of a building, an adaptive allocation and control of the added capacitance through TSM significantly improves the benefits of the extra capacitance. This paper compares two first-order models for a micro-building: a reference case model with a single lumped thermal capacitance associated with the building, and another model, with the building’s capacitance plus the capacitance of the water system. Results showed that the ITC/TSM system reduced the cost of conditioning the building by reducing the operating time of both the cooling and the heating systems. May through September, the air conditioning operating time was reduced by an average of 70%, and October through April, the operation of the heating system was reduced by an average of 25%.

Mary Wilson - One of the best experts on this subject based on the ideXlab platform.

  • building energy Management using increased thermal capacitance and thermal Storage Management
    Buildings, 2018
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study simulates an increased thermal capacitance (ITC) and thermal Storage Management (TSM) system to reduce the energy consumed by air conditioning and heating systems. The ITC/TSM is coupled with phase change materials (PCM), which enable tank volume reduction. The transient energy modeling software, the Transient System Simulation Tool (TRNSYS), is used to simulate the buildings’ thermal response and energy consumption, as well as the ITC/TSM system and controls. Four temperature-controlled operating regimes are used for the tank: building shell circulation, heat exchanger circulation, solar panel circulation, and Storage. This study also explores possible energy-saving benefits from tank volume reduction such as losses associated with the environment temperature due to tank location. Three different tank locations are considered in this paper: outdoor, buried, and indoor. The smallest tank size (five gallons) is used for indoor placement, while the large tank (50 gallons) is used either for outdoor placement or buried at a depth of 1 m. Results for Atlanta, Georgia show an average 48% required energy decrease for cold months (October–April) and a 3% decrease for warm months (May–September) for the ITC/TSM system with PCM when compared with the reference case. A system with PCM reduces the tank size by 90% while maintaining similar energy savings.

  • a first order study of reduced energy consumption via increased thermal capacitance with thermal Storage Management in a micro building
    Energies, 2015
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study uses a first-order approximation of a micro-building to investigate the major factors determining how increased thermal capacitance (ITC) with thermal Storage Management (TSM) can reduce energy consumption in locations with relatively mild weather conditions such as the southeastern part of the United States of America. In this study, ITC is achieved through water circulation between a large Storage tank and pipes embedded within the building envelope. Although ITC results in a larger dominant time constant for the thermal response of a building, an adaptive allocation and control of the added capacitance through TSM significantly improves the benefits of the extra capacitance. This paper compares two first-order models for a micro-building: a reference case model with a single lumped thermal capacitance associated with the building, and another model, with the building’s capacitance plus the capacitance of the water system. Results showed that the ITC/TSM system reduced the cost of conditioning the building by reducing the operating time of both the cooling and the heating systems. May through September, the air conditioning operating time was reduced by an average of 70%, and October through April, the operation of the heating system was reduced by an average of 25%.

Birna Trap - One of the best experts on this subject based on the ideXlab platform.

  • article 4 impact assessment of supervision performance assessment and recognition strategy spars to improve supply chain Management in health facilities in uganda a national pre and post study
    Journal of Pharmaceutical Policy and Practice, 2021
    Co-Authors: Denis Okidi Ladwar, Dennis Rossdegnan, Moses Nixon Sembatya, Nancy Miriam Amony, Morries Seru, Laura F Garabedian, Birna Trap
    Abstract:

    To strengthen medicines Management capacity, including supply chain Management, at public sector health facilities in Uganda, the Ministry of Health introduced a multipronged supervision, performance assessment, and recognition strategy (SPARS). The aim of this study was to assess the impact of SPARS on improving supply chain Management. A series of four papers on SPARS described the SPARS concept, its impact on overall and domain practices and appropriate medicines use, and now in the fourth paper describing the effect on supply chain Management. District-based health workers trained as supervisors build facility-level capacity in medicines Management using an indicator-based performance assessment followed by targeted supervisory visits. From 2010 to 2013, 1222 SPARS visits were implemented, and the SPARS performance indicator scores determined. This article assesses impact on 13 indicators in three of the five SPARS domains—stock Management, Storage Management, and ordering and reporting quality—using a pre–post design. We also explored factors that may have influenced these outcomes. Between the first and last visit within one year of SPARS implementation, we found an average improvement of 16 percentage points (p < 0.001) in supply chain Management measures across all levels of care. The improvement in scores for stock Management, Storage Management, and ordering and reporting was 22 (ns), 16 (p < 0.001), and 11 (p = 0.032) percentage points, respectively. The study identified the key predictors of positive change as a low initial indicator score, frequent supervisory visits, and engagement of the district health officer. The multipronged SPARS approach was effective in building supply chain Management capacity in lower-level health care facilities with statistically significant improvements in supply chain Management overall and in almost all stock and Storage- Management and ordering and reporting measures after one year of implementation. We recommend broad dissemination of the SPARS approach as an effective strategy to strengthen supply chain Management in low-income countries. Trial registration: The study did not involve or use human participants or identifiable personal data, human tissue, or animals and thus did not require ethical approval or a waiver. It is a study implemented in collaboration with the Ministry of Health and does not require trial registration.

  • article 4 impact assessment of supervision performance assessment and recognition strategy spars to improve supply chain Management in health facilities in uganda a national pre and post study
    Journal of Pharmaceutical Policy and Practice, 2021
    Co-Authors: Denis Okidi Ladwar, Dennis Rossdegnan, Moses Nixon Sembatya, Nancy Miriam Amony, Morries Seru, Laura F Garabedian, Birna Trap
    Abstract:

    BACKGROUND To strengthen medicines Management capacity, including supply chain Management, at public sector health facilities in Uganda, the Ministry of Health introduced a multipronged supervision, performance assessment, and recognition strategy (SPARS). The aim of this study was to assess the impact of SPARS on improving supply chain Management. A series of four papers on SPARS described the SPARS concept, its impact on overall and domain practices and appropriate medicines use, and now in the fourth paper describing the effect on supply chain Management. METHODS District-based health workers trained as supervisors build facility-level capacity in medicines Management using an indicator-based performance assessment followed by targeted supervisory visits. From 2010 to 2013, 1222 SPARS visits were implemented, and the SPARS performance indicator scores determined. This article assesses impact on 13 indicators in three of the five SPARS domains-stock Management, Storage Management, and ordering and reporting quality-using a pre-post design. We also explored factors that may have influenced these outcomes. RESULTS Between the first and last visit within one year of SPARS implementation, we found an average improvement of 16 percentage points (p < 0.001) in supply chain Management measures across all levels of care. The improvement in scores for stock Management, Storage Management, and ordering and reporting was 22 (ns), 16 (p < 0.001), and 11 (p = 0.032) percentage points, respectively. The study identified the key predictors of positive change as a low initial indicator score, frequent supervisory visits, and engagement of the district health officer. CONCLUSIONS The multipronged SPARS approach was effective in building supply chain Management capacity in lower-level health care facilities with statistically significant improvements in supply chain Management overall and in almost all stock and Storage- Management and ordering and reporting measures after one year of implementation. We recommend broad dissemination of the SPARS approach as an effective strategy to strengthen supply chain Management in low-income countries. TRIAL REGISTRATION The study did not involve or use human participants or identifiable personal data, human tissue, or animals and thus did not require ethical approval or a waiver. It is a study implemented in collaboration with the Ministry of Health and does not require trial registration.

  • article 2 longitudinal study assessing the one year effects of supervision performance assessment and recognition strategy spars to improve medicines Management in uganda health facilities
    Journal of Pharmaceutical Policy and Practice, 2018
    Co-Authors: Birna Trap, Martha Embrey, Richard Musoke, Anthony Kirunda, Martin Olowo Oteba, Dennis Rossdegnan
    Abstract:

    In late 2010, Uganda introduced a supervision, performance assessment, and recognition strategy (SPARS) to improve staff capacity in medicines Management in government and private not-for-profit health facilities. This paper assesses the impact of SPARS in health facilities during their first year of supervision. SPARS uses health workers trained as Medicines Management Supervisors (MMS) to supervise health facilities and address issues identified through indicatorbased performance assessment in five domains: stock Management, Storage Management, ordering and reporting, prescribing quality, and dispensing quality. We used routine data generated during SPARS visits to 1222 health facilities to evaluate performance changes during the first year of supervision as well as the time until achieving an adequate score in this period. We also explored variables related to facilities, MMS, and intensity of implementation as predictors of performance improvement and time until achieving an adequate score. Health facilities received an average of 3.4 MMS visits during the first year of supervision, with an average of 88 days between visits; each MMS implemented a median of 28 visits per year. Overall SPARS scores (maximum of 25) improved by 2.3 points (22.3%) per visit from a mean baseline score of 10.3. The adjusted improvement in overall SPARS score was significantly higher in primary health care facilities (2.36) versus higher-level health facilities and hospitals (2.15) (p = 0.001). The incremental improvement was highest at visit 2, with decreasing but continuing positive gains in subsequent visits. The adjusted mean incremental improvement per visit was highest in the prescribing quality domain, followed by dispensing quality, ordering and reporting, stock Management, and Storage Management. Adjusted improvement in SPARS scores varied by region, year of implementation, and facility ownership. After one year of SPARS, 22% of facilities achieved an adequate score of 18.75 (75% of maximum score). SPARS was effective in building health facility capacity in medicines Management, with a median overall improvement of almost 70% during the first year. The greatest improvements occurred in prescribing quality and at lower levels of care, although the highest level of performance was achieved in Storage Management. We recommend broad dissemination of the SPARS approach in all Ugandan health facilities as well as in other countries seeking a practical strategy to improve medicines Management performance.

Jacek Kitowski - One of the best experts on this subject based on the ideXlab platform.

  • resource Storage Management model for ensuring quality of service in the cloud archive systems
    Computer Science, 2014
    Co-Authors: Mariusz Kapanowski, Renata Slota, Jacek Kitowski
    Abstract:

    Nowadays, service providers offer a lot of IT services in the public or private cloud. The client can buy various kinds of services like SaaS, PaaS, etc. Recently there was introduced Backup as a Service (BaaS) as a variety of SaaS. At the moment there are available several different BaaSes for archiving the data in the cloud, but they provide only a basic level of service quality. In the paper we propose a model which ensures QoS for BaaS and some  methods for Management of Storage resources aimed at achieving the required SLA. This model introduces a set of parameters responsible for SLA level which can be offered on the basic or higher level of quality. The Storage systems (typically HSM), which are distributed between several Data Centres,  are built based on disk arrays, VTLs, and tape libraries. The RSMM model does not assume bandwidth reservation or control, but is rather focused on the Management of Storage resources.

  • Benchmarking tertiary Storage systems with file fragmentation
    Lecture Notes in Computer Science, 2002
    Co-Authors: Darin Nikolow, Renata Slota, Jacek Kitowski
    Abstract:

    In this paper we compare efficiency of two proposed Storage Management systems with the efficiency obtained for the commercial solution. The developed prototypes make use of index-based retrieving of file fragments, therefore they can be useful for multimedia databases.

  • tertiary Storage system for index based retrieving of video sequences
    IEEE International Conference on High Performance Computing Data and Analytics, 2001
    Co-Authors: Darin Nikolow, Renata Slota, Jacek Kitowski, Piotr Nyczyk, Janusz Otfinowski
    Abstract:

    In this paper we present a research which is aimed at developinga tertiary Storage system architecture for efficient index-based retrievingo f video sequences. During the research we built such a system by creating dedicated tertiary Storage Management software called VTSS. The system is intended to be a part of a multimedia database system. We also present preliminary experimental results from a prototype implementation.

Rogelio Luck - One of the best experts on this subject based on the ideXlab platform.

  • building energy Management using increased thermal capacitance and thermal Storage Management
    Buildings, 2018
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study simulates an increased thermal capacitance (ITC) and thermal Storage Management (TSM) system to reduce the energy consumed by air conditioning and heating systems. The ITC/TSM is coupled with phase change materials (PCM), which enable tank volume reduction. The transient energy modeling software, the Transient System Simulation Tool (TRNSYS), is used to simulate the buildings’ thermal response and energy consumption, as well as the ITC/TSM system and controls. Four temperature-controlled operating regimes are used for the tank: building shell circulation, heat exchanger circulation, solar panel circulation, and Storage. This study also explores possible energy-saving benefits from tank volume reduction such as losses associated with the environment temperature due to tank location. Three different tank locations are considered in this paper: outdoor, buried, and indoor. The smallest tank size (five gallons) is used for indoor placement, while the large tank (50 gallons) is used either for outdoor placement or buried at a depth of 1 m. Results for Atlanta, Georgia show an average 48% required energy decrease for cold months (October–April) and a 3% decrease for warm months (May–September) for the ITC/TSM system with PCM when compared with the reference case. A system with PCM reduces the tank size by 90% while maintaining similar energy savings.

  • a first order study of reduced energy consumption via increased thermal capacitance with thermal Storage Management in a micro building
    Energies, 2015
    Co-Authors: Mary Wilson, Rogelio Luck, Pedro J Mago
    Abstract:

    This study uses a first-order approximation of a micro-building to investigate the major factors determining how increased thermal capacitance (ITC) with thermal Storage Management (TSM) can reduce energy consumption in locations with relatively mild weather conditions such as the southeastern part of the United States of America. In this study, ITC is achieved through water circulation between a large Storage tank and pipes embedded within the building envelope. Although ITC results in a larger dominant time constant for the thermal response of a building, an adaptive allocation and control of the added capacitance through TSM significantly improves the benefits of the extra capacitance. This paper compares two first-order models for a micro-building: a reference case model with a single lumped thermal capacitance associated with the building, and another model, with the building’s capacitance plus the capacitance of the water system. Results showed that the ITC/TSM system reduced the cost of conditioning the building by reducing the operating time of both the cooling and the heating systems. May through September, the air conditioning operating time was reduced by an average of 70%, and October through April, the operation of the heating system was reduced by an average of 25%.