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This paper reviews recent studies on self-setting calcium phosphate cements (CPC). Discussions are focused on the cement setting reactions, the products formed
Joseph M. Antonucci, Drago Skrtic, A W. Hailer, E D. Eanes
Amorphous calcium phosphate (ACP), an important precursor in the biological formation of hydroxyapatite (HAP), has recently been utilized as a bioactive filler
Joseph M. Antonucci, J W. Stansbury, Bruce O. Fowler
HEMA is widely used in dental adhesives, bioactive composites and resin-modified glass ionomer cements. In its polymeric forms it is used in a number of
We present three tests for evaluating the agreement between measurements taken in a reverberation chamber and the expected results given by simple statistical
One approach to measuring the performance of intelligent systems is to develop standardized or reproducible tests. These tests may be in a simulated environment
A large number of path planning problems are solved by the use of graph based search algorithms. There are a variety of techniques available to optimize the
Research into intelligent systems and intelligent control is burgeoning. However, there is no consensus on how to define or measure an intelligent system. This
We describe hardware time synchronization instrumentation that we have developed which achieves time synchronization of better than one microsecond. The purpose
On November 13, 1998, a workshop was held at the National Institute of Standards and Technology (NIST) to obtain a clearer assessment of the current needs for
The fundamental constants are evaluated by comparison of the results of critical experiments and the theoretical expressions of these results written in terms
Howard W. Yoon, Matthew A. Davies, Timothy J. Burns, Michael Kennedy
A critical parameter in predicting tool wear during machining and in accurate computer simulations of machining is the spatially-resolved temperature at the
In this paper two questions are addressed: (1) what is precision measurement? And (2) where do ideas come from? To answer these questions, research examples are
We demonstrate here the feasibility of valence mapping of particulate samples, and discuss the factors that limit quantitative data extraction from the maps
D T. Raghavan, Tinh Nguyen, Mark R. VanLandingham, Xiaohong Gu
Polymer coatings are heterogeneous and often contain nanoscale degradation -susceptible regions. Therefore, mapping and identification of these regions would
Robert T. Johnk, David R. Novotny, Claude Weil, H. W. Medley
This paper summarizes a recent measurement effort by NIST researchers at an open-area test site (OATS), operated by a large information technology equipment
A number of factors promote frequent running of performance measurement codes for the evaluation and tuning of both applications and platforms. NIST is
The Blends of two statistical copolymers of ethylene/hexene (PEH) and ethylene/butene (PEB) exhibit both phase separation and crystallization transitions. Using
G Schmidt, A Nakatani, Paul Butler, Alamgir Karim, Charles C. Han
The shear orientation of viscoelastic clay-polymer solutions was investigated by means of rheology, flow birefringence (δn) and small-angle neutron scattering
Spinodal dewetting of ultra thin films driven by thermal fluctuations is considered analogous to phase separation accompanied by composition fluctuations. Such
David A. Wollman, Dale Newbury, Sae Woo Nam, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Steven Deiker, Norman F. Bergren, John M. Martinis
The commercial introduction of high-count-rate, near-room-temperature silicon drift detectors (presently available) and high-energy-resolution cryogenic
K Wamba, H Walker, Aaron J. Miller, B. Cabrera, D W. Robertson, P F. Boerner, D S. Martinez-Galarce, S F. Powell, Sae Woo Nam, Kent D. Irwin, Steven Deiker, R B. Hoover, T W. Barbee, P F. Baker
We are developing a new sounding rocket payload, the Advanced Technology Solar Spectroscopic Imager (ATSSI) that will use an 8x8 array of transition edge
The use of Extensible Markup Language (XML) and its associated APIs, for information modeling and information interchange applications is being actively
In recent years, numerous commercial and experimental Role-Based Access Control (RBAC) implementations have emerged. Central to several of these RBAC systems
This paper describes a unified model for role-based access control (RBAC). RBAC is a proven technology for large-scale authorization. However, lack of a