Through the Fire

Through exploration of roots and establishing a deep appreciation for family, heritage, and upbringing, Carolyn Mimbs is on a journey into realms of personal discovery and a reconnection to the earth. Distant memories are unearthed through a vintage aesthetic and sensual, vulnerable figures interacting and struggling within their surroundings. Artist and art have traveled along the same path and rhythm with increasing strides as desires are directed towards personal growth and transformation. Learning to retreat into the process of life and art is expressed through creation and disintegration, seeing the path that our corporeal bodies make as they one day return to the earth, completing the cycle of birth, formation, enlightenment, and death

Metrology - Beyond the Calibration Lab

We rely on data from measurements every day; a gas-pump, a speedometer, and a supermarket weight scale are just three examples of measurements we use to make decisions. We generally accept the data from these measurements as "valid." One reason we can accept the data is the "legal metrology" requirements established and regulated by the government in matters of commerce. The measurement data used by NASA, other government agencies, and industry can be critical to decisions which affect everything from economic viability, to mission success, to the security of the nation. Measurement data can even affect life and death decisions. Metrology requirements must adequately provide for risks associated with these decisions. To do this, metrology must be integrated into all aspects of an industry including research, design, testing, and product acceptance. Metrology, the science of measurement, has traditionally focused on the calibration of instruments, and although instrument calibration is vital, it is only a part of the process that assures quality in measurement data. For example, measurements made in research can influence the fundamental premises that establish the design parameters, which then flow down to the manufacturing processes, and eventually impact the final product. Because a breakdown can occur anywhere within this cycle, measurement quality assurance has to be integrated into every part of the life-cycle process starting with the basic research and ending with the final product inspection process. The purpose of this paper is to discuss the role of metrology in the various phases of a product's life-cycle. For simplicity, the cycle will be divided in four broad phases, with discussions centering on metrology within NASA.

Measurement Decision Risk - The Importance of Definitions

One of the more misunderstood areas of metrology is the Test Uncertainty Ratio (TUR) and its cousin, the Test Accuracy Ratio (TAR). There have been many definitions over the years, but why are these definitions important to a discussion on measurement decision risk? The importance lies in the clarity of communication. Problems can immediately arise in the application (or misapplication) of the definition of these terms. In other words, while it is important to understand the definitions, it is more important to understand concepts behind the definitions and to be precise in how they are applied. The objective of any measurement is a decision. Measurement Decision Risk is a way to look at the quality of a measurement and although it is not a new concept, it has generated a lot of attention since its addition as a requirement in the new U.S. National Standard, ANSI/NCSL Z540.3-2006. In addition to Measurement Decision Risk as the prime method of managing measurement risk, Z540.3 has also added, as a fall-back, an explicit definition for TUR. The impact these changes might have on calibration service providers if these requirements are levied on them has become the topic of much discussion and in some cases concern. This paper looks at the concepts behind the definitions and how they relate to Measurement Decision Risk. Using common examples, this paper will also provide a comparison of various elements of risk related to measurement science using the concepts of TAR, TUR, accuracy ratios, and Consumer Risk (False Accept Risk). The goal is to provide a better understanding of their relevance to the measurement decision process

Measurement Assurance for End-Item Users

The goal of a Quality Management System (QMS) as specified in ISO 9001 and AS9100 is to assure the end product meets specifications and customer requirements. Measuring devices, often called measuring and test equipments (MTE), provide the evidence of product conformity to the prescribed requirements. Therefore the processes which employ MTE can become a weak link to the overall QMS if proper attention is not given to development and execution of these processes. Traditionally, calibration of MTE is given more focus in industry standards and process control efforts than the equally important proper usage of the same equipment. It is a common complaint of calibration laboratory personnel that MTE users are only interested in "a sticker." If the QMS requires the MTE "to demonstrate conformity of the product," then the quality of the measurement process must be adequate for the task. This leads to an ad hoc definition; measurement assurance is a discipline that assures that all processes, activities, environments, standards, and procedures involved in making a measurement produce a result that can be rigorously evaluated for validity and accuracy. To evaluate that the existing measurement processes are providing an adequate level of quality to support the decisions based upon this measurement data, an understanding of measurement assurance basics is essential. This topic is complimentary to the calibration standard, ANSI/NCSL Z540.3-2006, which targets the calibration of MTE at the organizational level. This paper will discuss general measurement assurance when MTE is used to provide evidence of product conformity, therefore the target audience of this paper is end item users of MTE. A central focus of the paper will be the verification of tolerances and the associated risks, so calibration professionals may find the paper useful in communication with their customers, MTE users

Conformance Testing: Measurement Decision Rules

The goal of a Quality Management System (QMS) as specified in ISO 9001 and AS9100 is to provide assurance to the customer that end products meet specifications. Measuring devices, often called measuring and test equipment (MTE), are used to provide the evidence of product conformity to specified requirements. Unfortunately, processes that employ MTE can become a weak link to the overall QMS if proper attention is not given to the measurement process design, capability, and implementation. Documented "decision rules" establish the requirements to ensure measurement processes provide the measurement data that supports the needs of the QMS. Measurement data are used to make the decisions that impact all areas of technology. Whether measurements support research, design, production, or maintenance, ensuring the data supports the decision is crucial. Measurement data quality can be critical to the resulting consequences of measurement-based decisions. Historically, most industries required simplistic, one-size-fits-all decision rules for measurements. One-size-fits-all rules in some cases are not rigorous enough to provide adequate measurement results, while in other cases are overly conservative and too costly to implement. Ideally, decision rules should be rigorous enough to match the criticality of the parameter being measured, while being flexible enough to be cost effective. The goal of a decision rule is to ensure that measurement processes provide data with a sufficient level of quality to support the decisions being made - no more, no less. This paper discusses the basic concepts of providing measurement-based evidence that end products meet specifications. Although relevant to all measurement-based conformance tests, the target audience is the MTE end-user, which is anyone using MTE other than calibration service providers. Topics include measurement fundamentals, the associated decision risks, verifying conformance to specifications, and basic measurement decisions rules

Metrology for Project Development

Presentation Topics are: 1. What is metrology 2. Measurement related risks and their consequence

Geography education requirements in K-8 preservice teacher training at Southern Regional Education Board colleges and universities and development of a field-oriented model curriculum

The purposes of this study were to (I) identify what geography courses and/or credit hours, if any, that colleges and universities within the Southern Regional Education Board require of their K-8 preservice teachers; (2) determine if these institutions utilize Geographic Alliances with regard to preservice teacher training, and if so how; (3) determine need for a field-oriented model curriculum for geography education; and ( 4) develop a field-oriented model curriculum for geographic education at the college/university level designed for preservice teachers. Responses were received from 72 percent of the SREB institutions that were contacted. Findings reveal that no geography course was required for 32 percent of respondents and one to three hours of geography were required for 50 percent of the SREB institutions. A World Regional course was required for preservice educators at 3 7 percent of the SREB institutions. It was revealed that 80 percent of the SREB institutions responded that a geography course would best be taught within a Geography Department because the geography faculty was most qualified. Of the 13 8 SREB institutions that responded, 46 percent stated that their state Geographic Alliance was not utilized in K-8 preservice teacher training, and another 24 percent responded that they were unfamiliar with a Geographic Alliance or any Geographic Alliance activity at their institution

Using Reliability to Meet Z540.3's 2 percent Rule

NASA's Kennedy Space Center (KSC) undertook implementation of ANSI/NCSL Z540.3-2006 in October 2008. Early in the implementation, KSC identified that the largest cost driver of Z540.3 implementation is measurement uncertainty analyses for legacy calibration processes. NASA, like other organizations, has a significant inventory of measuring and test equipment (MTE) that have documented calibration procedures without documented measurement uncertainties. This paper provides background information to support the rationale for using high in-tolerance reliability as evidence of compliance to the 2% probability of false acceptance (PFA) quality metric of ANSI/NCSL Z540.3-2006 allowing use of qualifying legacy processes. NASA is adopting this as policy and is recommending NCSL International consider this as a method of compliance to Z540.3. Topics covered include compliance issues, using end-of-period reliability (EOPR) to estimate test point uncertainty, reliability data influences within the PFA model, the validity of EOPR data, and an appendix covering "observed" versus "true" EOPR

The Efficacy of a Vocabulary Acquisition Program in Young English Language Learners

Teachers know that many nonnative English language learners (ELLs) have problems with successful negotiation of academic English vocabulary. The purpose of this study, working from a behavioralist perspective as espoused by Thorndike, Skinner, and Bandura, was to determine if a vocabulary program influenced word acquisition in first grade ELLs. The research questions focused on the degree to which the program affected the learner\u27s vocabulary and helped to alleviate word poverty from among the 34 participants in the study. In this quantitative pretest -- posttest design, ELL students were exposed to 9 weeks of intense instruction. The vocabulary acquisition of ELL students in first grade at a K-5 elementary school was measured. Data were assessed statistically using paired samples t-tests. Results indicated a statistically significant improvement in ELL vocabulary. Implications for social change include providing information that can assist teachers and school districts in selecting effective vocabulary strategies for those at risk for low school performance

A New NASA Preferred Standard - ANSI/NCSL Z540.3-2006

No abstract availabl