A MULTIATTRIBUTE UTILITY ANALYSIS OF TECHNOLOGICAL CHOICE IN THE CALIFORNIA WILD RICE INDUSTRY

Technological choice and competitive strategy issues are reviewed and then a framework for choosing between two competing technologies is proposed.The two competing technologies differ in their ability to store and process wild rice over a marketing year. The traditional technologies requires almost immediate processing of the harvested wild rice while the experimental technology allows harvested wild rice to be stored and processed over the course of the marketing year. Technological choice is explored using multiattribute utility analysis and two economic evaluations. The economic evaluations are payback period analysis and internal rate of return analysis given uncertain demand conditions. The experimental technology is shown to be the dominant technological choice under both multiattribute utility analysis and the economic analyses.Research and Development/Tech Change/Emerging Technologies,

BREEDERS' AWARDS AND THE GAMBLER'S CORNER SOLUTION

Livestock Production/Industries,

Relationships Between Psychogenic Needs and Theoretical Frameworks of Psychotherapists

Each psychotherapist has a personal theoretical framework, that is, a set of assumptions on which his or her psychotherapy is based. It appears from the published writings and opinions of therapists that therapists generally concur that a major factor in the formation of an individual therapist\u27s theoretical framework is the therapist\u27s personality. This study was designed to address this issue by examining the relationship between the psychogenic needs and theoretical framework of the therapist. From an accessible population of 178, responses were obtained from 153 therapist participants (108 males and 45 females) from five Utah training programs and three experience levels. Each of the participants completed a measure of theoretical framework (developed by the author) which assessed general adherence to the principles and techniques of person-centered, behavioral, and rational-emotive therapy. Based on scales from Jackson\u27s Personality Research Form the following psychogenic need variables were also derived: Need for Achievement, Need for Affiliation, Need for Dominance, Need for Exhibition, Need to Give Nurturance, and Need for Order. Other independent variables were based on the experience levels and training programs of the therapists. Multiple regression analyses yielded uniformly small (less than 13.5% variance accounted for), generally non-significant relationships. The only clear relationship between a psychogenic need and the theoretical framework variables was between Need for Affiliation and the person-centered therapy variables. The experience level of the therapist accounted for the greatest portion of variance in the behavior therapy variables. There was no clear relationship between the rational-emotive therapy variables and any of the independent variables. The low magnitude of these results may be partially explained by the relatively low reliability of the research variables. Further, if a relationship does exist between psychogenic needs and theoretical framework, it may not be a linear relationship which was the assumptive basis of the analyses used in the research. An interesting finding was that scores of concurrence with the three theoretical schools had positive intercorrelations of between .14 and .54. An implication of this finding is that theoretical framework may be multidimensional versus unidimensional as it has previously been conceptualized. In summary, this research does not support the relationship between the psychogenic needs and theoretical framework of the therapist. However, given the theoretical emphasis placed on the topic, and the difficulties with this research, further research in the area appears warranted before the issues can be more definitely resolved

Immune cell census in murine atherosclerosis: cytometry by time of flight illuminates vascular myeloid cell diversity

Aims: Atherosclerosis is characterised by the abundant infiltration of myeloid cells starting at early stages of disease. Myeloid cells are key players in vascular immunity during atherogenesis. However, the subsets of vascular myeloid cells have eluded resolution due to shared marker expression and atypical heterogeneity in vascular tissues. We applied the high-dimensionality of mass cytometry to the study of myeloid cell subsets in atherosclerosis. Methods and Results: Apolipoprotein E-deficient (ApoE-/-) mice were fed a chow or a high fat (western) diet for 12 weeks. Single cell aortic preparations were probed with a panel of 35 metal-conjugated antibodies using Cytometry by time of flight (CyTOF). Clustering of marker expression on live CD45+ cells from the aortas of ApoE-/- mice identified 13 broad populations of leucocytes. Monocyte, macrophage, type 1 and type 2 conventional dendritic cell (cDC1 and cDC2), plasmacytoid dendritic cell (pDC), neutrophil, eosinophil, B cell, CD4+ and CD8+ T cell, γδ T cell, natural killer (NK) cell and innate lymphoid (ILC) cell populations accounted for approximately 95% of the live CD45+ aortic cells. Automated clustering algorithms applied to the Lin-CD11blo-hi cells revealed 20 clusters of myeloid cells. Comparison between chow and high fat fed animals revealed increases in monocytes (both Ly6C+ and Ly6C-), pDC and a CD11c+ macrophage subset with high fat feeding. Concomitantly, the proportions of CD206+ CD169+ subsets of macrophages were significantly reduced as were cDC2. Conclusions: A CyTOF-based comprehensive mapping of the immune cell subsets within atherosclerotic aortas from ApoE-/- mice offers tools for myeloid cell discrimination within the vascular compartment and it reveals that high fat feeding skews the myeloid cell repertoire towards inflammatory monocyte-macrophage populations rather than resident macrophage phenotypes and cDC2 during atherogenesis

Evidence for a nurse-led protocol for removing urinary catheters: A scoping review

Background: Catheter-associated urinary tract infections significantly contribute to hospital acquired complications globally, with adverse implications for patient outcomes, healthcare, and fiscal resources. Nurse-led protocols for early removal of urinary catheters to reduce the incidence of catheter-associated urinary tract infections have been trialled. Aim: To report the evidence for nurse-led practices of removing urinary catheters within the acute healthcare setting. Methods: Five databases (CINAHL, MEDLINE, SCOPUS, EMCARE, and INFORMIT) were systematically searched in a scoping review of all peer reviewed publications up to 12/03/2021. Findings: Thirteen studies met the inclusion criteria. Eleven studies described a reduction in catheter-associated urinary tract infections regardless of the type of intervention, one study did not demonstrate a change and one study reported an increase in catheter-associated urinary tract infections. Settings, study duration and sample size varied substantially between the included studies. Interventions were exclusive nurse-led protocol for removal of urinary catheters, computerised reminder systems, bundle approaches or comprehensive packages. Outcome measures and definitions of catheter-associated urinary tract infections were varied or absent. Discussion: The quality of evidence of included studies in this review was low, attributed to by a number of methodological issues related to sample size and statistical analyses. Whilst the introduction of nurse-led protocols showed some improvements, the methodological inconsistencies make it difficult to highlight a specific protocol. Conclusion: Given the quality of existing evidence, caution is required in translating these findings to policy and practice

Transparency in Assessment through Web-Based Communication: A Study of Changes in Communication About Assessment and Teachers' Perceptions of Assessment and Student Motivation for Learning

Thesis advisor: Irwin BlumerPublic and private schools are adopting new technological software to manage student information in a web-based format. These programs have the capability to provide students and parents with on-line access to grades and higher quality assessment information with the hope that students take information about their grades and use it formatively to improve in the classroom. Teachers, however, have historically kept their grade books private and increasing transparency into grading represents a major change in teachers' communication of student achievement. This qualitative case study examines the impact of increasing transparency in assessment by providing parents and students access to web-based grading information on teachers' perceptions of the quality and effectiveness of communication with parents and students, teachers' perceptions of student motivation, teachers' application of the program, and teachers' perceptions of their communication with each other. Seven teachers participated in this research study over the course of one semester at a large, suburban New England high school. The data from this study showed that increasing transparency in assessment to students and parents resulted in changes in the nature and substance of communication between teachers, parents and students. Teachers reported changing their use of the program over the course of the semester in order to provide greater clarity of assessment data to students and parents and, as a result, students were able to use it formatively to improve student learning. Teachers reported that the greatest impact of this program was in improved communication with students leading to increased student effort and a sense of student ownership over grades. Teachers also felt that increasing transparency in assessment influenced communication and collaboration among teachers. The findings of this research study provide implications for educational practice, policy, future research and leadership.Thesis (EdD) — Boston College, 2009.Submitted to: Boston College. Lynch School of Education.Discipline: Educational Administration

Exploring the effectiveness of a rapid participatory method in mapping the role of agricultural biodiversity in local food systems to identify potential entry points to improve peoples' capabilities to be nutrition secure

Vietnam has improved its food security situation at the price of losing traditional varieties adapted to local tastes and conditions due to increased production and use of high-yield crop varieties (mainly large scale mono-cropping). Decreased diversity of foods is a growing issue, and the existence of malnutrition in regions where staple crop production and food availability are sufficient highlights the necessity for a multidisciplinary approach to design interventions that target the four dimensions of food security - availability, access, stability and utilisation, of a diverse group of locally available nutritious foods. This paper demonstrates the use of the Four Cell Approach to participatory research to rapidly identify trends in a) species and food usage in a landscape and b) the dynamics of the food system which may contribute to, or be leveraged to improve, peoples' capabilities to be nutrition secure. In the case of Son La Province, Vietnam, explored in this paper, it is possible to conclude a positive relationship between increased production diversity and dietary diversity, and highlight the importance of markets for diffusion of diverse foods. Diversification of species production and consumption has a positive effect on resilience during the off-season, and diversification of coping mechanisms utilised by communities can build resilience for future shocks. Food-based approaches that promote diversified production and consumption of locally available nutritious foods that local people value, while ensuring access to markets, have the potential to improve capabilities of local people to provide nutritious foods for themselves and their communities while improving resilience to be food and nutrition secure at all time

Production of Secondary Organic Aerosol During Aging of Biomass Burning Smoke From Fresh Fuels and Its Relationship to VOC Precursors

After smoke from burning biomass is emitted into the atmosphere, chemical and physical processes change the composition and amount of organic aerosol present in the aged, diluted plume. During the fourth Fire Lab at Missoula Experiment, we performed smog-chamber experiments to investigate formation of secondary organic aerosol (SOA) and multiphase oxidation of primary organic aerosol (POA). We simulated atmospheric aging of diluted smoke from a variety of biomass fuels while measuring particle composition using high-resolution aerosol mass spectrometry. We quantified SOA formation using a tracer ion for low-volatility POA as a reference standard (akin to a naturally occurring internal standard). These smoke aging experiments revealed variable organic aerosol (OA) enhancements, even for smoke from similar fuels and aging mechanisms. This variable OA enhancement correlated well with measured differences in the amounts of emitted volatile organic compounds (VOCs) that could subsequently be oxidized to form SOA. For some aging experiments, we were able to predict the SOA production to within a factor of 2 using a fuel-specific VOC emission inventory that was scaled by burn-specific toluene measurements. For fires of coniferous fuels that were dominated by needle burning, volatile biogenic compounds were the dominant precursor class. For wiregrass fires, furans were the dominant SOA precursors. We used a POA tracer ion to calculate the amount of mass lost due to gas-phase oxidation and subsequent volatilization of semivolatile POA. Less than 5% of the POA mass was lost via multiphase oxidation-driven evaporation during up to 2 hr of equivalent atmospheric oxidation

Microbiology and atmospheric processes: Biological, physical and chemical characterization of aerosol particles

The interest in bioaerosols has traditionally been linked to health hazards for humans, animals and plants. However, several components of bioaerosols exhibit physical properties of great significance for cloud processes, such as ice nucleation and cloud condensation. To gain a better understanding of their influence on climate, it is therefore important to determine the composition, concentration, seasonal fluctuation, regional diversity and evolution of bioaerosols. In this paper, we will review briefly the existing techniques for detection, quantification, physical and chemical analysis of biological particles, attempting to bridge physical, chemical and biological methods for analysis of biological particles and integrate them with aerosol sampling techniques. We will also explore some emerging spectroscopy techniques for bulk and single-particle analysis that have potential for in-situ physical and chemical analysis. Lastly, we will outline open questions and further desired capabilities (e. g., in-situ, sensitive, both broad and selective, on-line, time-resolved, rapid, versatile, cost-effective techniques) required prior to comprehensive understanding of chemical and physical characterization of bioaerosols