The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform

Allen Barnett - One of the best experts on this subject based on the ideXlab platform.

  • product Concept to manufacturing silicon film a new crystalline silicon solar cell
    Progress in Photovoltaics, 1997
    Co-Authors: Allen Barnett
    Abstract:

    The Silicon-Film™ technology is designed to capture the low costs attributed to thin films while retaining the high performance and stability of crystalline silicon. The progression of the Silicon-Film™ technology is followed from the Concept Stage through the various development Stages and into manufacturing. Results at key development Stages, the lessons learned and some of the pitfalls along the commercialization path are described. Some university research opportunities are discussed. © 1997 John Wiley & Sons, Ltd.

Dale A. Carnegie - One of the best experts on this subject based on the ideXlab platform.

  • A Three-Tier Hierarchical Robotic System for Urban Search and Rescue Applications
    2007 IEEE International Workshop on Safety Security and Rescue Robotics, 2007
    Co-Authors: Dale A. Carnegie
    Abstract:

    Previous efforts to employ robots in urban search and rescue applications (USAR) have had limited success due to a number of factors, including cost, accessibility and efficiency. A three-tier system of autonomous mobile robots is proposed and has been constructed to proof-of-Concept Stage. Importantly, the lowest level of this system comprises a multitude of disposable robots. The system can be implemented at an order of magnitude lower cost than existing systems, dramatically increasing its applicability and versatility. The hardware and software development of this system is discussed.

  • A high resolution full-field range imaging system for robotic devices
    2005
    Co-Authors: Dale A. Carnegie, Michael J. Cree, Adrian A. Dorrington, Andrew D. Payne
    Abstract:

    There has been considerable effort by many researchers to develop a high resolution full-field range imaging system. Traditionally these systems rely on a homodyne technique that modulates the illumination source and shutter speed at some high frequency. These systems tend to suffer from the need to be calibrated to account for changing ambient light conditions and generally cannot provide better than single centimeter range resolution, and even then over a range of only a few meters. We present a system, tested to proof-of-Concept Stage that is being developed for use on a range of mobile robots. The system has the potential for real-time, sub millimeter range resolution, with minimal power and space requirements.

Joseph Piacenza - One of the best experts on this subject based on the ideXlab platform.

  • Understanding the Impact of Decision Making on Robustness During Complex System Design: More Resilient Power Systems
    ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg, 2020
    Co-Authors: Joseph Piacenza, Kenneth John Faller, Mir Abbas Bozorgirad, Eduardo Cotilla-sanchez, Christopher Hoyle, Irem Y. Tumer
    Abstract:

    Abstract Robust design strategies continue to be relevant during Concept-Stage complex system design to minimize the impact of uncertainty in system performance due to uncontrollable external failure events. Historical system failures such as the 2003 North American blackout and the 2011 Arizona-Southern California Outages show that decision making, during a cascading failure, can significantly contribute to a failure's magnitude. In this paper, a scalable, model-based design approach is presented to optimize the quantity and location of decision-making agents in a complex system, to minimize performance loss variability after a cascading failure, regardless of where the fault originated in the system. The result is a computational model that enables designers to explore Concept-Stage design tradeoffs based on individual risk attitudes (RA) for system performance and performance variability, after a failure. The IEEE RTS-96 power system test case is used to evaluate this method, and the results reveal key topological locations vulnerable to cascading failures, that should not be associated with critical operations. This work illustrates the importance of considering decision making when evaluating system level tradeoffs, supporting robust design.

  • Understanding the Effects of Capturing Climate and Occupancy Trends During Concept-Stage Sustainable Building Design
    Journal of Solar Energy Engineering, 2020
    Co-Authors: Sean Lin, Bahaa Albarhami, Salvador Mayoral, Joseph Piacenza
    Abstract:

    Abstract This paper presents a model prediction to capture specifically how energy usage in sustainable buildings on college campuses is affected by different variables of student life. The California State University, Fullerton (CSUF) Student Housing Phase III, which received a Platinum Leadership in Energy and Environmental Design (LEED) certification for the Building Design and Construction category, with its performance in a LEED California Nonresidential Title 24 (NRT24) and ASHRAE 90.1 climate zones, is used as a case study to illustrate the method. Through LEED-approved software, the standard compliant energy models are compared with the occupancy-scheduled models along with the actual energy consumption in different climate zones. The results provide insight into how variables within student dormitory life affect the total building energy usage. The total amount of energy consumed per area is one new factor providing understanding into occupancy trends. This new data set reveals more understanding regarding how and where the energy is consumed to maintain a comfortable learning environment. The LEED certification program is one benchmark used to determine sustainable building design. Designers must adhere to set standards before being awarded a U.S. Green Building Council (USGBC) certification such as LEED. The results from this paper will provide input over which variables within student dormitory life affect the energy usage of the building. With the model results, some solutions are presented to update the LEED project certification as well as to reduce student energy usage.

  • Understanding the Importance of Capturing Climate and Occupancy Trends During Concept-Stage Sustainable Building Design
    Volume 7: 30th International Conference on Design Theory and Methodology, 2018
    Co-Authors: Sean Lin, Bahaa Albarhami, Salvador Mayoral, Joseph Piacenza
    Abstract:

    This paper presents a comparison of Concept Stage computational model predictions to capture how building energy consumption is affected by different climate zones. The California State University, Fullerton (CSUF) Student Housing Phase III, which received a Platinum Leadership in Energy and Environmental Design (LEED) certification for the Building Design and Construction category, and its performance in a LEED California Nonresidential Title 24 (NRT24) and ASHRAE 90.1 climate zones is used as a case study to illustrate the method. Through LEED approved simulation software, the standard compliant energy simulation models are compared to the occupancy scheduled models along with the actual energy consumption in different climate zones. The results provide insight to how variables within student dormitory life affect total building energy usage. Total amount of energy consumed per area is one new factor providing understanding into occupancy trends. This new data set reveals more understanding regarding how and where the energy is consumed to maintain a comfortable learning environment.

  • Understanding the Importance of Post Occupancy Usage Trends During Concept-Stage Sustainable Building Design
    Volume 4: 22nd Design for Manufacturing and the Life Cycle Conference; 11th International Conference on Micro- and Nanosystems, 2017
    Co-Authors: Joseph Piacenza, Salvador Mayoral, Bahaa Albarhami, Sean Lin
    Abstract:

    As sustainable building mandates become more prevalent in new commercial and mixed use buildings, it is a challenge to create a broad, one-size-fits-all certification process. While designers can estimate energy usage with computational tools such as model based design, anticipating the post occupancy usage is more challenging. Understanding and predicting energy usage trends is especially complicated in unique mixed use building applications, such as university student housing buildings, where occupancy varies significantly as a function of enrollment, course scheduling, and student study habits. This research explores a computational modeling approach used to achieve LEED (Leadership in Energy and Environmental Design) Platinum certification for a student housing complex design. A case study is presented from the California State University, Fullerton (CSUF) campus, and examines the impact of post occupancy building usage trends, and diversity factor, defined as a building’s instantaneous energy usage normalized by the maximum allowable usage, on energy use estimates. The CSUF case model, which was originally created using EnergySoft’s EnergyPro 5 software, is examined. An annual predictive energy use comparison is performed in EnergyPro 5 using general building design mandates (i.e., ASHRAE 90.1, California Title 24), and CSUF case specific building usage details (e.g., student scheduling, diversity factor). In addition, the energy usage estimates of these two predictive models are compared to the actual usage data collected during the 2014 academic year. The results of this comparison show the benefits of considering post occupancy usage, and recommendations are presented for creating unique and application based computational models, early in the design process. This research has broad applications, and can extend to sustainable building design in other organizations, whose operational schedule falls outside of current prediction methods for sustainability mandates.

  • Robust Topology Design of Complex Infrastructure Systems
    Volume 1B: 35th Computers and Information in Engineering Conference, 2015
    Co-Authors: Joseph Piacenza, Mir Abbas Bozorgirad, Irem Y. Tumer, Scott Proper, Christopher Hoyle
    Abstract:

    Optimizing the topology of complex infrastructure systems can minimize the impact of cascading failures due to an initiating failure event. This paper presents a novel approach for the Concept-Stage design of complex infrastructure systems by integrating model-based design with network analysis to increase system robustness. This approach focuses on system performance after cascading has occurred, and examines design trade-offs of the resultant (or degraded) system state. In this research, robustness is defined as the invariability of system performance due to uncertain failure events. Where a robust network has the ability to meet minimum performance requirements despite the impact of cascading failures. This research is motivated by catastrophic complex infrastructure system failures such as the August 13th Blackout of 2003, highlighting the vulnerability of systems such as the North American Power Grid (NAPG). A mathematical model was developed using an adjacency matrix, where removing a network connection simulates uncertain failure events. Performance degradation is iteratively calculated as failures cascade throughout the system, and robustness is measured by the lack of performance variability over multiple cascading failure scenarios. Two case studies are provided: an extrapolated IEEE 14 test bus, and the Oregon State University campus power network. The overarching goal of this research is to understand key system design trade-offs between robustness, performance objectives, and cost. In addition, optimizing network topologies to mitigate performance loss during Concept-Stage design will enable system robustness.Copyright © 2015 by ASME

Marco Filippi - One of the best experts on this subject based on the ideXlab platform.

  • A model to design and optimize multi-energy systems in buildings at the design Concept Stage
    Renewable Energy, 2010
    Co-Authors: Enrico Fabrizio, Vincenzo Corrado, Marco Filippi
    Abstract:

    Increasing interest is currently being addressed to multi-energy systems in buildings. These systems integrate different energy sources, at least one of which is renewable, in order to cover the thermal and electrical loads of a building. Since the design and operation of such systems are very complicated for many reasons (e.g. the intermittent nature of the renewable sources, the highly interlinked system layouts), it is of the foremost importance to provide tools to help select the best system configuration and energy sources mix. A modelling approach to multi-energy systems in buildings, based on the energy hub Concept is presented in this work. This approach allows the coupling between the energy demand and the energy supply in a building to be modelled in a synthetic way. The model was customised to be used at the Concept Stage of the building design, either as a system simulation tool or as a system selection tool. If the prices and the characteristics of the energy converters and of the energy-wares are known, it is possible, with a certain set of constraints, to determine the configuration that minimises the initial investment costs, the use of non-renewable sources or the life-cycle costs. This approach makes it possible to avoid the simulation and ranking of a set of different system configurations, and also permits the study of the behaviour of such systems in an open configuration and not as individual systems. An application of the methodology to a case study is provide

Eugene Murphy - One of the best experts on this subject based on the ideXlab platform.

  • wastewater disposal option in mundaring a practical case study
    Desalination, 1996
    Co-Authors: Eugene Murphy
    Abstract:

    Urban development in the Hills areas of Perth is difficult to provide with local or regional wastewater systems due to the remoteness and isolation as well as the sensitive environment. Development to date has therefore mainly been on the basis of large-sized lots with individual on-site systems. This in turn puts limitations on further development or re-development of these areas. In some locations such as Kalamunda, a connection to one of the Authority's major schemes has recently been possible. In other areas such as Mundaring, a local scheme would be required. This paper describes the development of such a scheme to the Concept Stage for the development of the Mundaring town centre.