Keck constraints on a varying fine-structure constant: wavelength calibration errors

The Keck telescope's HIRES spectrograph has previously provided evidence for a smaller fine-structure constant, alpha, compared to the current laboratory value, in a sample of 143 quasar absorption systems: da/a=(-0.57+/-0.11)x10^{-5}. This was based on a variety of metal-ion transitions which, if alpha varies, experience different relative velocity shifts. This result is yet to be robustly contradicted, or confirmed, by measurements on other telescopes and spectrographs; it remains crucial to do so. It is also important to consider new possible instrumental systematic effects which may explain the Keck/HIRES results. Griest et al. (2009, arXiv:0904.4725v1) recently identified distortions in the echelle order wavelength scales of HIRES with typical amplitudes +/-250m/s. Here we investigate the effect such distortions may have had on the Keck/HIRES varying alpha results. We demonstrate that they cause a random effect on da/a from absorber to absorber because the systems are at different redshifts, placing the relevant absorption lines at different positions in different echelle orders. The typical magnitude of the effect on da/a is ~0.4x10^{-5} per absorber which, compared to the median error on da/a in the sample, ~1.9x10^{-5}, is relatively small. Consequently, the weighted mean value changes by less than 0.05x10^{-5} if the corrections we calculate are applied. Nevertheless, we urge caution, particularly for analyses aiming to achieve high precision da/a measurements on individual systems or small samples, that a much more detailed understanding of such intra-order distortions and their dependence on observational parameters is important if they are to be avoided or modelled reliably. [Abridged]Comment: 9 pages, 2 figures, 2 tables. Invited contribution to Proc. IAU XXVIIth General Assembly, Joint Discussion 9, "Are the fundamental constants varying with time?". To appear in P. Molaro, E. Vangioni-Flam, eds, Memorie della Societa Astronomica Italiana (MmSAIt), Vol. 80. Complete version of Table 1 available at http://astronomy.swin.edu.au/~mmurphy/pub.htm

Alien Registration- Murphy, John T. (Bangor, Penobscot County)

https://digitalmaine.com/alien_docs/9801/thumbnail.jp

Introduction to Thematic Special Issue

Currently technology is proliferating at a rate never before imagined. As a result, every facet of society has changed because of technological developments, including the delivery of social services. Although there is much debate over whether or not these changes are good or bad, they cannot be denied (Murphy and Pardeck, forthcoming). In fact, Jacques Ellul ( 1964: 127) has referred to modern society as a technological civilization. What he means by this designation is not only that society is dependent upon technology for its survival, but, more importantly, technological rationality has come to determine how persons view themselves and their environment. Due to the ubiquitous nature of this style of thinking, definitions of reality, sickness, and social competence have assumed a technological hue. Accordingly, those who are involved with the delivery of social services must understand how technology focuses their attention on techniques, thereby possibly obscuring the social nature of a client\u27s problem. And if his type of insight is not fostered, no-one may benefit from the introduction of technology Into social service programs

Technology in Clinical Practice and the Technological Ethic

Computers are being introduced into practically every area of clinical practice. The use of this technology by practitioners has not gone unchallenged. Specifically, new ethical problems are thought to be associated with using computers to make clinical assessments. Logistical and procedural difficulties, however, have been the primary focus of concern. In this paper the critique of computerized evaluation is expanded, with attention directed to the computer micro-world. Because the computer micro-world consists of several unwarranted assumptions about the nature of social reality, clinical practice may be affected in many undesireable ways. The theoretical underside of computer use is illustrated to show how it shapes therapeutic (or diagnostic) discourse

Evaluation of prototype Advanced Life Support (ALS) pack for use by the Health Maintenance Facility (HMF) on Space Station Freedom (SSF)

The purpose is to evaluate the prototype Advanced Life Support (ALS) Pack which was developed for the Health Maintenance Facility (HMF). This pack will enable the Crew Medical Officer (CMO) to have ready access to advanced life support supplies and equipment for time critical responses to any situation within the Space Station Freedom. The objectives are: (1) to evaluate the design of the pack; and (2) to collect comments for revision to the design of the pack. The in-flight test procedures and other aspects of the KC-135 parabolic test flight to simulate weightlessness are presented

SNIFFER WFD119: Enhancement of the River Invertebrate Classification Tool (RICT)

EXECUTIVE SUMMARY Project funders/partners: Environment Agency (EA), Northern Ireland Environment Agency (NIEA), Scotland & Northern Ireland Forum for Environmental Research (SNIFFER), Scottish Environment Protection Agency (SEPA) Background to research The Regulatory Agencies in the UK (the Environment Agency; Scottish Environment Protection Agency; and the Northern Ireland Environment Agency) now use the River Invertebrate Classification Tool (RICT) to classify the ecological quality of rivers for Water Framework Directive compliance monitoring. RICT incorporates RIVPACS IV predictive models and is a highly capable tool written in a modern software programming language. While RICT classifies waters for general degradation and organic pollution stress, producing assessments of status class and uncertainty, WFD compliance monitoring also requires the UK Agencies to assess the impacts of a wide range of pressures including hydromorphological and acidification stresses. Some of these pressures alter the predictor variables that current RIVPACS models use to derive predicted biotic indices. This project has sought to broaden the scope of RICT by developing one or more RIVPACS model(s) that do not use predictor variables that are affected by these stressors, but instead use alternative GIS based variables that are wholly independent of these pressures. This project has also included a review of the wide range of biotic indices now available in RICT, identifying published sources, examining index performance, and where necessary making recommendations on further needs for index testing and development. Objectives of research •To remove and derive alternative predictive variables that are not affected by stressors, with particular emphasis on hydrological/acidification metric predictors. •To construct one or more new RIVPACS model(s) using stressor independent variables. •Review WFD reporting indices notably AWIC(species), LIFE (species), PSI & WHPT. Key findings and recommendations : Predictor variables and intellectual property rights : An extensive suite of new variables have been derived by GIS for the RIVPACS reference sites that have been shown to act as stressor-independent predictor variables. These include measures of stream order, solid and drift geology, and a range of upstream catchment characteristics (e.g. catchment area, mean altitude of upstream catchment, and catchment aspect). It is recommended that decisions are reached on which of the newly derived model(s) are implemented in RICT so that IPR issues for the relevant datasets can be quickly resolved and the datasets licensed. It is also recommended that licensing is sought for a point and click system (where the dataset cannot be reverse engineered) that is capable of calculating any of the time-invariant RIVPACS environmental predictor variables used by any of the newly derived (and existing) RIVPACS models, and for any potential users. New stressor-independent RIVPACS models : Using the existing predictor variables, together with new ones derived for their properties of stressor-independence, initial step-wise forward selection discriminant models suggested a range of 36 possible models that merited further testing. Following further testing, the following models are recommended for assessing watercourses affected by flow/hydromorphological and/or acidity stress: • For flow/hydromorphological stressors that may have modified width, depth and/or substrate in GB, it is suggested that a new ‘RIVPACS IV – Hydromorphology Independent’ model (Model 24) is used (this does not use the predictor variables width, depth and substratum, but includes a suite of new stressor-independent variables). • For acidity related stressors in GB, it is suggested that a new ‘RIVPACS IV – Alkalinity Independent’ model (Model 35) is used (this does not use the predictor variable alkalinity, but includes new stressor-independent variables). • For flow/hydromorphological stressors and acidity related stressors in GB, it is suggested that a new ‘RIVPACS IV – Hydromorphology & Alkalinity Independent’ model (Model 13) is used (this does not use the predictor variables width, depth, substratum and alkalinity, but includes a suite of new stressor-independent variables). • Reduced availability of appropriate GIS tools at this time has meant that no new models have been developed for Northern Ireland. Discriminant functions and end group means have now been calculated to enable any of these models to be easily implemented in the RICT software. Biotic indices : The RIVPACS models in RICT can now produce expected values for a wide range of biotic indices addressing a variety of stressors. These indices will support the use of RICT as a primary tool for WFD classification and reporting of the quality of UK streams and rivers. There are however a number of outstanding issues with indices that need to be addressed: • There is a need to develop a biotic index for assessing metal pollution. • WFD EQR banding schemes are required for many of the indices to report what is considered an acceptable degree of stress (High-Good) and what is not (Moderate, Poor or Bad). • A comprehensive objective testing process needs to be undertaken on the indices in RICT using UK-wide, large-scale, independent test datasets to quantify their index-stressor relationships and their associated uncertainty, for example following the approach to acidity index testing in Murphy et al., (in review) or organic/general degradation indices in Banks & McFarland (2010). • Following objective testing, the UK Agencies should make efforts to address any index under-performance issues that have been identified, and where necessary new work should be commissioned to modify existing indices, or develop new ones where required so that indices for all stress types meet certain minimum performance criteria. • Testing needs to be done to examine index-stressor relationships with both observed index scores and RIVPACS observed/expected ratios. Work should also be done to compare the existing RIVPACS IV and the new stressor-independent models (developed in this project) as alternative sources of the expected index values for these tests. • Consideration should be given to assessing the extent to which chemical and biological monitoring points co-occur. Site-matched (rather than reach-matched) chemical and biological monitoring points would i) generate the substantial training datasets needed to refine or develop new indices and ii) generate the independent datasets for testing

A Generalized Theory of Varying Alpha

In this paper, we formulate a generalization of the simple Bekenstein-Sandvik-Barrow-Magueijo (BSBM) theory of varying alpha by allowing the coupling constant, \omega, for the corresponding scalar field \psi\ to depend on \psi. We focus on the situation where \omega\ is exponential in \psi\ and find the late-time behaviours that occur in matter-dominated and dark-energy dominated cosmologies. We also consider the situation when the background expansion scale factor of the universe evolves in proportion to an arbitrary power of the cosmic time. We find the conditions under which the fine structure `constant' increases with time, as in the BSBM theory, and establish a cosmic no-hair behaviour for accelerating universes. We also find the conditions under which the fine structure `constant' can decrease with time and compare the whole family of models with astronomical data from quasar absorption spectra.Comment: 25 pages, 6 figures. Minor corrections and clarifications added. Final section on spatial variations removed so that the paper focuses exclusively on time-variatio

Degreed and Nondegreed Licensed Clinical Social Workers: An Exploratory Study

This exploratory study focuses on 155 randomly selected respondents who obtained a clinical license in social work with or without the Master of Social Work (MSW) degree. Ninety-seven of the respondents obtained a license with an MSW degree;fifty-eight obtained a license without the MSW degree. The two groups of respondents completed a survey instrument that explored their basic demographic characteristics, their attitudes and behaviors related to practice, and their philosophical and political attitudes toward practice. The researchers found few statistically significant differences between the two groups of respondents. The article offers implications of these findings for the profession of social work

A Critical Analysis of the Impact of Day Care on the Pre-School Child and the Family

Maternal employment has increased dramatically over the last two decades. The result of this increase in the number of working mothers is the expanded use of day care programs for children. Examined in this paper are research findings on the impact of day-care on the child and the family. The implications of these findings for policy development are discussed. Currently in the United States, over 50 percent of mothers work outside the home; this figure is expected to rise to 75 percent by 1990. The fastest growing segment of the working mother population is among those with children under two (Zigler and Gordon, 1982). This increasing rate of maternal employment of the last two decades has created the need for alternative arrangements for infants and young children. There is some concern among child development specialists that these alternative arrangements of care may have detrimental effects on a child\u27s social and psychological development. Much of the concern about substitute care is based on the theory and research related to the negative effects of institutionalization on young children, (Bowlby, 1951; Spitz, 1945). This body of literature, however, tells one little about the typical forms of substitute care experienced by most children, Obviously, children generally do not experience the extreme physical and social deprivation reported on in the institutional literature (Advisory Committee on Child Development, 1976:117). Consequently, the quality of substitute care received by the majority of children is not comparable to the type of care studied in the institutional literature. Still, the possibility remains that even with high quality care, differences may be found in the behavior and development of children as a function of the type of substitute care received. The literature reports numerous studies on the impact of various forms of substitute care; however, most of these studies are not well designed (Advisory Committee on Child Development, 1976:118). The typical form of substitute care focused on in the literature has been high quality, university based day-care settings, a form of substitute care most children do not have access to (Santrock, 1983:159). Even though the majority of these studies have weak methodological designs and are based on day-care settings not experienced by most children, some meaningful findings have emerged in the literature. This paper will focus on those relevant studies reporting on the impact of one very common form of substitute care, day-care for the pre-school child. The major emphasis of the review will be on how day-care impacts the pre-school child\u27s intellectual development, emotional development, social development, and the child\u27s family system. The authors will draw from these findings several major policy implications