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Displaying 6551 - 6575 of 13218

A Review of Machine Learning Control in Building Operations

March 14, 2023
Author(s)
Liang Zhang, Zhelun Chen, Xiangyu Zhang, Amanda Pertzborn
… flexible, and adaptable. The research topic of MLC in building energy systems is developing rapidly, but to our … systems. This paper provides a systematic review of MLC in building energy systems. We review technical papers in two major categories of applications of machine learning …

Using Business Impact Analysis to Inform Risk Prioritization and Response

November 17, 2022
Author(s)
Stephen Quinn, Nahla Ivy, Julie Chua, Matthew Barrett, Greg Witte, Larry Feldman, Daniel Topper, Robert Gardner
… (i.e., what might go wrong). The process described in this publication helps leaders determine which assets … is the foundation for the ERM/CSRM process, as described in the NIST IR 8286 series, and enables consistent … enterprise risk management, information and communications technology …

Role of Interfacial Water in the Adhesion Loss of Polymer/Substrate Systems and Composites

June 21, 2007
Author(s)
Tinh Nguyen, Joannie W. Chin, E Byrd, David Alshed, Cyril Clerici, Jonathan W. Martin
… Water at the polymer/substrate interface in coatings, adhesives, and fiber-reinforced polymer … composites is often the main cause of adhesion loss in these systems. Using experimental data measured in this study, we critically assess the role of interfacial … adhesion, ATR, building technology, interface, internal reflection spectroscopy, …

Load-Displacement Relations for Nanoindentation of Viscoelastic Materials

August 2, 2006
Author(s)
Chien-Kuo Liu, S H. Lee, Li Piin Sung, Tinh Nguyen
… on the analog of the governing equation of elasticity in the time coordinate system to the governing equation of the viscoelastic model in Laplace transform coordinate system. The solution consists … obtained by the present study are close to those reported in the literature. Additional analysis showed that the …

Inadequate Interoperability: A Closer Look at the Costs

September 1, 2005
Author(s)
Robert E. Chapman
… burden of $15.8 billion due to inadequate interoperability in the capital facilities segment of the U.S. construction … three percent of the annual value of construction put in place for owners and operators. Building on the NIST … International Symposium on Automation and Robotics in Construction …

LoopDA -- A Natural Ventilation System Design and Analysis Tool

August 1, 2003
Author(s)
William S. Dols, Steven J. Emmerich
… on a limited basis, the method has been automated in order to better evaluate its reliability under a more … of natural ventilation systems with an environment in which to perform and document the process of designing the … airflow analysis, building technology, computer program, design tool, indoor air …

LoopDA-Natural Ventilation Design and Analysis Software

April 1, 2003
Author(s)
William S. Dols, Steven J. Emmerich
… on a limited basis, the method has been automated in order to better evaluate its reliability under a more … of natural ventilation systems with an environment in which to perform and document the process of designing the … airflow analysis, building technology, computer program, design tool, indoor air …

Database-Assisted Design and Wind Directionality Effects

November 1, 2002
Author(s)
A Rigato, P C. Chang, Emil Simiu
… We present a simple methodology, developed for use in design assisted by electronic aerodynamic and … industrial steel frame buildings with a rectangular shape in plan, located in hurricane-prone areas. We compare our results with results … aerodynamics, building codes, building technology, climatology, databases, directionality (wind), …

Database-Assisted Design for Wind: Basic Concepts and Software Development

November 1, 2002
Author(s)
T Whalen, Fahim H. Sadek, Emil Simiu
… plots suitable for slide-rule calculations. The accuracy in the definition of wind loads inherent in such tables and plots is far lower than that inherent in current methods for stress computation. Advances in … building codes, building technology, database-assisted design, structural engineering, …

High-Strength Concrete at High Temperature - An Overview

June 1, 2002
Author(s)
Long T. Phan
… property measurement are compared with results obtained in other studies as well as with existing code provisions to … building technology, compressive strength, concrete, elastic modulus, …

Mechanical Properties of High-Strength Concrete at Elevated Temperatures

March 1, 2001
Author(s)
Long T. Phan, Nicholas J. Carino
… with higher w/cm and without silica fume. The differences in modulus of elasticity are less significant. However, the potential for explosive spalling increased in HSC specimens with lower w/cm. An examination of the … building technology, compressive strength, concrete, elastic modulus, …

Semi-Active Control of Linear and Hysteretic Structures Using Variable Viscous and Magnetorheological Dampers

July 1, 2000
Author(s)
S El-Borgi, Michael A. Riley, Fahim H. Sadek, N Ayed
… two types of semi-active dampers for seismic applications in hysteretic structures, namely variable viscous (VV) … and magnetorheological (MR) dampers. The structures used in this study are modelled with a 1-D shear type … The algorithms used for selecting the control forces in the dampers include the Linear Quadratic Regulator (LQR) …

Seismic Rehabilitation Design of Steel Moment Connection with Welded Haunch

January 1, 2000
Author(s)
Q -. Yu, Chia-Ming Uang, John L. Gross
… the beam shear force transfer mechanism, which assisted in reducing the demands at the beam flange groove welds. … Analytical studies further showed that the tensile stress in the existing beam flange groove weld can be reduced to a … model that allows the designer to predict the stress level in the beam flange groove welds is presented. …

Enhancement of R123 Pool Boiling by the Addition of N-Hexane

January 1, 1999
Author(s)
Mark A. Kedzierski
… of hexane to pure R123 caused a simultaneous reduction in the bubble diameter and increase in the site density. The increase in site density enhanced the boiling despite the reduction in … building technology, additives, enhanced heat transfer, fluid heating, …

Liquefaction Evaluation of Densified Sand at Approach to Pier 1 on Treasure Island, California, Using SASW Method

October 1, 1998
Author(s)
R D. Andrus, K H. Stokoe, R M. Chung, J A. Bay
… the pier had been densified by a vibrating probe technique in 1985. The area of improved soil, which is 23 m wide and 93 … = 7.0) while sinkholes, sand boils and cracks formed in the adjacent unimproved areas. SASW tests were conducted … building technology, SASW test, seismic testing, shear wave velocity, …

Hurricane Fran in North Carolina, September 5-6, 1996

January 1, 1998
Author(s)
Richard D. Marshall
… trees. However, when the probable maximum wind speeds in Hurricane Fran are compared with 50-yr MRI speeds listed in performance-based design standards such as ANSI A58.1 or … less than a design event. There were 36 fatalities in Hurricane Fran, 23 of them in North Carolina. …

Post-Installed Anchors. A Literature Review

January 1, 1998
Author(s)
Geraldine S. Cheok, Long T. Phan
… are presented. More detailed information may be found in the cited references. There are quite a number of studies … adhesive anchors, anchors, building technology, concrete, expansion anchors, grouted anchors, …

Enhancement of R123 Pool Boiling by the Addition of N-Hexane (NISTIR 5780)

March 1, 1996
Author(s)
Mark A. Kedzierski
… of hexane to pure R123 caused a simultaneous reduction in the bubble diameter and increase in the site density. The increase in site density enhanced the boiling despite the reduction in … building technology, additives, enhanced heat transfer, fluid heating, …

A Workplan to Analyze the Energy Impacts of Envelope Airtightness in Office Buildings

December 1, 1995
Author(s)
Steven J. Emmerich, Andrew K. Persily
… These estimates, and other analyses of energy consumption in oillce buildings, are based on building energy analysis … programs such as DOE-2. These analyses have been helpful in identifying opportunities for energy efficiency, … models of heat transfer and HVAC system performance in buildings, they are acknowledged to have shortcomings in …

Mobile Manipulator Stability Measurements

April 18, 2017
Author(s)
Roger V. Bostelman, Tsai H. Hong
Mobile manipulators are being marketed for material handling and other tasks. Manufacturers suggest the stability of the vehicle best when the onboard loading tapers the centroid to the center of the wheelbase as the payload height increases. Experiments
Displaying 6551 - 6575 of 13218
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