787 research outputs found

    Direct and Indirect Assessments of Organizational Justice: Homogeneity or Harmony?

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    The importance of fairness to practitioners and scholars is evident as, within the past 40 years, fairness has become one of the most studied areas in the organizational sciences. Despite such proliferation, the construct clarity and measurement of fairness are far from settled, as researchers have assessed individuals’ experiences of organizational justice in different ways. In this effort, we draw on measurement theory as we initiate an exploration of whether direct and indirect measures of justice are, indeed, fully interchangeable or if they provide useful, differential, and/or complimentary information when employed in addressing specific research questions

    Data Analysis Techniques for Fan Performance in Highly-Distorted Flows from Boundary Layer Ingesting Inlets

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    The design of a unique distortion-tolerant fan for a high-bypass ratio boundary-layer ingesting propulsion system has been completed and a rig constructed and tested in the NASA Glenn 8x6 wind tunnel. Processing the data from the experiment presented some interesting challenges because of the complexity of the experimental setup and the flow through the test rig. The experiment was run in three phases, each of which employed a unique complement of inlet throat and fan face instrumentation to avoid the blockage that would have resulted from simultaneously installing all of the rakes. The measurement from the individual test points were subsequently combined to compute the overall stage performance. A CFD model of the experiment was used to gain understanding of the flow field and to test some of the techniques proposed for interpolating and extrapolating the measurements into regions where measurements were not made. This capability became extremely useful when it was discovered that there was an unexpected total temperature distortion in the tunnel. The CFD model was modified by inserting a total temperature profile at the upstream boundary that mimicked the measured distortion where measurements were available and that CFD solution was used to investigate methods to infer the complete total temperature field at the fan face

    Major foliar fungal diseases of wheat in Oklahoma

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    Wolves: A Primer for Ranchers

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    Ranch management has become more complex since wolves were reintroduced into Idaho and Wyoming in 1996. In wolf areas, livestock have experienced increased death loss and greater stress. Increased livestock aggressiveness has been observed, especially toward working dogs, making handling livestock more difficult. Additionally ranchers have reported a loss of body condition, lower conception rates, increased time and expense for management. Our study was designed to investigate the effect of wolf presence on cattle behavior, landscape use patterns, and resource selection by comparing high wolf density areas against low wolf density areas. This study also generated baseline information on cattle spatial behavior before wolves were on the landscape. A Before-After/Control-Impact Paired (BACIP) experimental design was used. Control study areas in Idaho (3) have high wolf presence while Impact study areas in Oregon (3) started with no wolf presence, and are shifting to elevated wolf presence. Paired Idaho and Oregon areas have similar topography, vegetation composition, wild ungulate prey bases, and livestock management. Cows are tracked at 5-minute intervals using GPS collars (10 per area) throughout the grazing season. Wolf presence is monitored by GPS, trail cameras, and scat surveys. Ten GPS-collared cattle in an Idaho study area encountered a GPS-collared wolf 783 times at less than 500 meters during 137 days in the 2009 grazing season. At 100 meters there were 53 encounters; 52 at night. Tests of naïve and experienced cattle exposed to a simulated wolf encounter found increased excitability and fear-related physiological stress responses in cows previously exposed to wolves. This was shown through increased cortisol levels, body temperature, and temperament scores. Cattle presence near occupied houses doesn’t offer protection from wolves. Data shows wolves within 500m of occupied houses 588 times during 198 days of tracking. Many confirmed depredations on this site were also close to houses

    A problem solving approach to visceral learning

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    Abstract only. Permission to include in repository granted by Sally Byers, Permissions Assistant, Wiley-Blackwell Publishing Ltd.An earlier paper in this series depicted visceral learning as a problem in concept identification in which subjects seek information about the visceral target (Roberts, Williams, Farrell, & Marlin. 1979). Concepts pertaining to this target are based initially upon procedural details of training and are modified as feedback identifies instances of the desired response. Evidence for this view was sought by examining verbal reports for the information about target responding that is presumably the product of a concept identification process. Accurate self-report was observed when subjects were successfully trained to produce either: 1) an increase and decrease in heart rate, or 2) lateralized changes (L > R and R> L) in skin conductance. Control of the response in the absence of accurate self-report was not observed in either training condition. The present paper describes an extended framework for the study of learning mechanisms. In this approach, a task statement is assumed to establish a problem space within which visceral learning proceeds. Major components of this space include: 1) a representation of task objectives. 2) initial concepts concerning effective strategies derived from the task statement and the subject's personal history, and 3) a processing system which is organized to acquire information about the response from feedback events. The processing system is seen as a construction which is determined uniquely for each learning procedure by processing requirements that are implicit in problem structure. The system organizes memory to receive information about the response and codes this information in a manner appropriate for production of the target in accordance with performance requirements of the task. This analysis suggested that within-subject training for two visceral targets with a transfer requirement (as in Roberts et al., 1979) might have favored identification of differences rather than similarities between the targets and encoding in a manner appropriate for recall without feedback as a retrieval cue. Consequently accurate self-report was assessed as a function of forewarning of transfer when subjects were trained to produce a single target alone. The purpose was to determine whether a problem-solving approach might identify processing conditions that favor veridical self-report following training on a feedback task. (Supported by A0132 from NSERC of Canada)Ye

    Juror Perceptions of Trial Testimony as a Function of the Method of Presentation: A Comparison of Live, Color Video, Black-and-White Video, Audio, and Transcript Presentations

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    Summary of Contents I. Introduction A. Uses of videotape in the litigation process 1. Prelitigation videotape uses 2. Videotaped depositions 3. Electronic trial records 4. Electronic presentation of evidence B. A review of the research literature II. The Research Design: Rationale and Description A. The need to assess the impact of videotape in the litigation process B. The live trial as a standard of comparison C. Description of the research design 1. The stimulus trial 2. The trial participants 3. The physical setting 4. A description of the different trial procedures 5. The questionnaire III. Research Results A. Juror perceptions of the trial participants as rated on the bipolar adjective scales 1. Competency 2. Honesty 3. Friendliness 4. Appearance 5. Objectivity 6. Additional adjective pairs B. The amount of compensation awarded the landowner C. The relationship of the dollar awards to juror ratings of trial participants D. Juror preferences for the trial participants E. Juror reactions to the trials IV. Discussion of the Results A. Comparative merits of deposition presentation methods 1. Read transcript 2. Audiotape 3. Black-and-white videotape 4. Color videotape 5. Conclusion B. An evaluation of the use of videotape to present all testimony at trial C. Recommendations for future researc

    Juror Perceptions of Trial Testimony as a Function of the Method of Presentation: A Comparison of Live, Color Video, Black-and-White Video, Audio, and Transcript Presentations

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    Summary of Contents I. Introduction A. Uses of videotape in the litigation process 1. Prelitigation videotape uses 2. Videotaped depositions 3. Electronic trial records 4. Electronic presentation of evidence B. A review of the research literature II. The Research Design: Rationale and Description A. The need to assess the impact of videotape in the litigation process B. The live trial as a standard of comparison C. Description of the research design 1. The stimulus trial 2. The trial participants 3. The physical setting 4. A description of the different trial procedures 5. The questionnaire III. Research Results A. Juror perceptions of the trial participants as rated on the bipolar adjective scales 1. Competency 2. Honesty 3. Friendliness 4. Appearance 5. Objectivity 6. Additional adjective pairs B. The amount of compensation awarded the landowner C. The relationship of the dollar awards to juror ratings of trial participants D. Juror preferences for the trial participants E. Juror reactions to the trials IV. Discussion of the Results A. Comparative merits of deposition presentation methods 1. Read transcript 2. Audiotape 3. Black-and-white videotape 4. Color videotape 5. Conclusion B. An evaluation of the use of videotape to present all testimony at trial C. Recommendations for future researc

    Unlocking biomarker discovery: Large scale application of aptamer proteomic technology for early detection of lung cancer

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    Lung cancer is the leading cause of cancer deaths, because ~84% of cases are diagnosed at an advanced stage. Worldwide in 2008, ~1.5 million people were diagnosed and ~1.3 million died – a survival rate unchanged since 1960. However, patients diagnosed at an early stage and have surgery experience an 86% overall 5-year survival. New diagnostics are therefore needed to identify lung cancer at this stage. Here we present the first large scale clinical use of aptamers to discover blood protein biomarkers in disease with our breakthrough proteomic technology. This multi-center case-control study was conducted in archived samples from 1,326 subjects from four independent studies of non-small cell lung cancer (NSCLC) in long-term tobacco-exposed populations. We measured >800 proteins in 15uL of serum, identified 44 candidate biomarkers, and developed a 12-protein panel that distinguished NSCLC from controls with 91% sensitivity and 84% specificity in a training set and 89% sensitivity and 83% specificity in a blinded, independent verification set. Performance was similar for early and late stage NSCLC. This is a significant advance in proteomics in an area of high clinical need

    A Field Study Using the Polymerase Chain Reaction (Pcr) to Screen for Brugia Microfilariae in Human and Animal Blood

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    Blood samples from 43 humans and 14 cats positive with Brugia microfilariae were analyzed in a field study in Tanjung Pinang, Indonesia. The study used the polymerase chain reaction (PCR) to compare the sensitivity of radioactive and biotinylated species-specific oligonuleotide probes. The cloning char­acterization of the Hha I repeat DNA family found in filarial parasites of the genus Brugia, and the development of species-specific probes for B.malayi and B.pahangi based on these repeats has been described elsewhere (PNAS USA 83: 797-801); Mol.Biochem. Parasitol. 2$: 163-170). The use of radioisotopes for labelling DNA probes is both expensive and inconvenient. To replace these probes, biotinylated DNA probes have been designed for non- radioactive detection of B.malayi and B.pahangi. These oligonucleotide probes have long tails of biotinylated uridine residues added to their 5\u27 end. As little as 100 pg of Brugia DNA can be detected on dot blot with these probes. Detection of the probes is based on an avidin-alkaline phosphatase colorimetric assay. In order to distinguish between infected from uninfected individuals, it is necessary to detect the amount of DNA in one microfilaria (about 60 pg). The polymerase chain reaction (PCR) is a procedure in which a small amount of DNA can be amplified up to 1 million-fold. A part of each sample in this study was PCR amplified and compared with the unamplified portion using both the radioactive and biotinylated DNA probe. The PCR amplified samples were accurately identified by both the radioactive and biotinylated B.malayi and B.pahangi probes. Even samples with as few as two microfilariae per lOOul of blood were easily detected. The samples that were not PCR amplified were accurately identified after only long exposures (greater than one week) to the radioactive probes. The biotinylated probes, were not sensitive enough for accurate identification of the non-PCR amplified samples. The polymerase chain reaction is, therefore, a promising new tool for enhancing the sensitivity of parasite detection assays based on DNA probes. This will be especially important in designing assay based on non-radioactive DNA probes

    An Integrated Approach for Characterizing Aerosol Climate Impacts and Environmental Interactions

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    Aerosols exert myriad influences on the earth's environment and climate, and on human health. The complexity of aerosol-related processes requires that information gathered to improve our understanding of climate change must originate from multiple sources, and that effective strategies for data integration need to be established. While a vast array of observed and modeled data are becoming available, the aerosol research community currently lacks the necessary tools and infrastructure to reap maximum scientific benefit from these data. Spatial and temporal sampling differences among a diverse set of sensors, nonuniform data qualities, aerosol mesoscale variabilities, and difficulties in separating cloud effects are some of the challenges that need to be addressed. Maximizing the long-term benefit from these data also requires maintaining consistently well-understood accuracies as measurement approaches evolve and improve. Achieving a comprehensive understanding of how aerosol physical, chemical, and radiative processes impact the earth system can be achieved only through a multidisciplinary, inter-agency, and international initiative capable of dealing with these issues. A systematic approach, capitalizing on modern measurement and modeling techniques, geospatial statistics methodologies, and high-performance information technologies, can provide the necessary machinery to support this objective. We outline a framework for integrating and interpreting observations and models, and establishing an accurate, consistent, and cohesive long-term record, following a strategy whereby information and tools of progressively greater sophistication are incorporated as problems of increasing complexity are tackled. This concept is named the Progressive Aerosol Retrieval and Assimilation Global Observing Network (PARAGON). To encompass the breadth of the effort required, we present a set of recommendations dealing with data interoperability; measurement and model integration; multisensor synergy; data summarization and mining; model evaluation; calibration and validation; augmentation of surface and in situ measurements; advances in passive and active remote sensing; and design of satellite missions. Without an initiative of this nature, the scientific and policy communities will continue to struggle with understanding the quantitative impact of complex aerosol processes on regional and global climate change and air quality
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