Experimental designs and their efficiencies for spatially correlated observations in two dimensions

Optimality of experimental designs for spatially correlated observations is investigated.come two dimensional correlation structures are discussed and an attempt has been made to find optimal or nearly optimal design for each sitution.The solution lend to designs similar to that used for repeated measurements.The relative efficiency of the proposed designs in comparison to randomized latin square designs is tabulated for some cases.     

Estimation of signal to noise ratio using mahalanobis distance

In this paper, we propose some alternative estimatiors to that given by C. G. Khatri and C. R. Rao (1985), for estimating Signal to Noise ratio. Using Pitman Nearness, Condition for prefering one estimator over the other is estabilished. It is shown numerically that estimators corresponding to Entropy loss function are better more oftern than those corresponding to Squared Error loss.     

Positive Changes in Perceptions and Selections of Healthful Foods by College Students After a Short-Term Point-of-Selection Intervention at a Dining Hall

Abstract

Objective: Determine the effects of a short-term, multi-faceted, point-of-selection intervention on college students’ perceptions and selection of 10 targeted healthful foods in a university dining hall and changes in their self-reported overall eating behaviors. Participants: 104 college students, (age 18–23) completed pre-I and post-I surveys. Methods: Pre-survey collected at dining hall in April 2007, followed by 3-week intervention then post-survey collected via email. Healthy choice indicators, large signs, table tents, flyers and colorful photographs with “benefit-based messages” promoted targeted foods. Response rate to both surveys was 38%. Results: Significantly more participants reported that healthful choices were clearly identified in the dining hall after the intervention. Over 20% of participants reported becoming more aware of healthful food choices in the dining hall after the intervention. Significant increases in self-reported intake were reported for cottage cheese and low-fat salad dressing, with a trend toward increased consumption of fresh fruit. Seven of the 14 assessed eating behaviors had significant changes in the desired direction. Increased awareness of healthful foods was the top reason for self-reported changes in overall eating behaviors. Conclusion: Short-term, multi-faceted, point-of-selection marketing of healthful foods in university dining halls may be beneficial for improving college students’ perceptions and selections of targeted healthful foods in the dining hall and may improve overall eating behaviors of college students.     

Ethnicity,Race and Nationalism in Australia: Some Critical Perspectives

Over the last 15 years or so, a number of writers have undertaken critical analyses of Australian immigration that have challenged prevailing social science paradigms and raised issues of the representation of social and power relations in a very diverse society. These analyses have located Australian immigration within the context of international capitalism, exploring class segmentation and solidarity, the relation between policies and practice and questions of racism and nationalism.     

Preface: Women and Work: Where Are We, Where Did We Come From, and Where Are We Going?

The obstacles faced by today's women in the workplace bear out the truth in the old adage that history repeats itself. The maternal wall, the ideal worker, and the ideal homemaker beliefs are current iterations of the century-old tendency to mark women as suited for the home and men as suited for the workplace ( Albee & Perry, 1998 ; Coltrane, 1996 ; Mintz, 2000 ). The belief that the sexes are vastly different—with different needs, values, and abilities—has been a hallmark throughout the history of both women and men in both the workplace and the home ( Ferree, 1990 ; Williams, 2000 ). Generally speaking, these beliefs have been detrimental to all concerned ( Barnett & Rivers, 2004 ).     

Social Justice and the Low-Paid Workers

This paper defines a minimal set of conditions which must be satisfied by any system purporting to be guided by a notion of social justice with a significant egalitarian element. The aim is to distinguish between egalitarian concern on the one hand and mere alms-giving sentiment on the other. Taking a broad historical span, the paper shows that, rhetoric apart, the empirical data does not support the claim that egalitarian concerns have played an effective role in determining the value of the real wage for the low-paid worker. In reality, the fate of low wages appears to have been determined by little more than an alms-giving sentiment. This has implications not only for current debates over labour market reform but also for social welfare policies in general. This is especially so because of the close affinity between the base Award rate and the evaluation of the ‘poverty line’. Attention to the Award wage of the low-paid worker, the paper argues, is all the more urgent in the current economic climate when an increasing proportion of workers are likely to be trapped in low paying jobs for very long periods and possibly indefinitely.     

A window on the wider world? Rural children's use of information and communication technologies

The possibilities which information and communication technologies (ICT) offer people (or groups) to overcome the friction of distance and the constraints of materiality mean that these technologies are seen to have particular relevance in rural areas which have been historically characterised in terms of their economic and social perpheriality. In this paper, we draw on empirical research with children and their teachers and parents, to explore the opportunities which ICT are seen to offer young people living in rural areas. First, we examine the information that children access on-line and how young people make sense of this expanded terrain. Second we focus on communication, by considering children's use of email and chat rooms. Third, we explore how this information and these modes of communication may be shaping young people's sense of place in the world. Our findings expose a clear contrast between the ambitious and future orientated ways in which adults imagine ICT will expand their children's educational and employment opportunities, and social and spatial horizons, and the everyday ways in which these technologies actually emerge for children in practice.     

The Therapist as Psychobiological Regulator: Dissociation,Affect Attunement and Clinical Process

Dissociation is defined as a protective coping mechanism employed on a broad spectrum: from day-to-day “spacing out” to psychic numbing to multiplicity. A convergence of recent insights in traumatology, neuroscience, and developmental theory is reviewed. These findings all point to the importance of affect regulation in infant and child development and in the therapeutic relationship, where attunement to implicit communication is crucial. Using such relational and intersubjective organizing principles as the concept of enactment and Beebe and Lachmann’s (Infant research and adult treatment: Co-constructing interactions 2002) “three principles of salience,” I discuss an analytic case in which dissociation is a central dynamic.