373 research outputs found

    Comparison of Regional and Statewide Impacts on Salinity Mitigation in the Arkansas River Valley

    Get PDF
    The Arkansas River in Colorado has a major salinity problem, due to agricultural runoff caused by irrigation. It is necessary to see how on-farm net sales, regional and state employment and income levels are affected by alternative aquifer recharge rates. The positive impacts were greatest for the 40% recharge rate.Resource /Energy Economics and Policy,

    Women’s Advocate or Racist Hypocrite: Gertrud Scholtz-Klink and the Contradictions of Women in Nazi Ideology

    Full text link
    The Reichsfrauenführerin, Gertrud Scholtz-Klink, led the National Socialist Women’s League from 1934 until she went into hiding in 1945. During her career in the Nazi Party, she created a female focused sector of the party that promoted pronatalist propaganda, discouraged women from engaging in politics, and urged women to only perform gender-suitable work. In contradiction to her message, Scholtz-Klink was the highest-ranking female political figure and a divorcee, who regularly chose her political career with the Nazi Party over her duties in the private sphere. Although she had little to no political power in the inner circle because of her sex, she did influence the actions and ideals of German women. She retrospectively claimed women, including herself, were not political. However, her speeches and other retrospective statements of hers demonstrated the racist ideology she promulgated for the party. This demonstrated Scholtz-Klink’s complicity in the atrocities perpetrated by the Nazis against the Jews and non-Germans. Nazi ideology of women was contradictory and always evolving because the Nazis’ main focus was the annihilation of the Jews, not control over women. Because of generations of systemic misogyny and racism, women posed no perceived threat to the Nazi men. Therefore, female focused policies lacked stability since “racial purification” was the first priority of the Nazi Regime

    FARM COMPUTER ADOPTION IN THE GREAT PLAINS

    Get PDF
    Computers change rapidly, yet the last survey on computer use in agriculture was in 1991. We surveyed Great Plains producers in 1995 and used logit analysis to characterize adopters and non-adopters. About 37% of these producers use computers which is consistent with the general population. We confirmed previous surveys emphasizing the importance of education, age/experience, and other farm characteristics on adoption. However, we also found that education and experience may no longer be a significant influence. Future research and education could focus on when and where computers are most needed, and therefore when adoption is most appropriate.adoption, agriculture, computers, farmers, Great Plains, logit, Farm Management,

    An application of software design and documentation language

    Get PDF
    The software design and documentation language (SDDL) is a general purpose processor to support a lanugage for the description of any system, structure, concept, or procedure that may be presented from the viewpoint of a collection of hierarchical entities linked together by means of binary connections. The language comprises a set of rules of syntax, primitive construct classes (module, block, and module invocation), and language control directives. The result is a language with a fixed grammar, variable alphabet and punctuation, and an extendable vocabulary. The application of SDDL to the detailed software design of the Command Data Subsystem for the Galileo Spacecraft is discussed. A set of constructs was developed and applied. These constructs are evaluated and examples of their application are considered

    BENEFITS OF CONTROLLING SALINE WATER IN COLORADO

    Get PDF
    The Arkansas River in Colorado is confronted with a salinity issue; the majority of this salinity problem is due to agricultural runoff caused by irrigation. Reducing applications of irrigation water through adoption of more technically efficient irrigation systems is one means of improving water quality in the Arkansas River basin. This research uses positive mathematical programming to model the cropping practices of the farms along the Arkansas River. It examines the affect of acreage and profit levels of these farms given the choice of changing their irrigation technologies.Environmental Economics and Policy,

    Resonant Processes in a Frozen Gas

    Full text link
    We present a theory of resonant processes in a frozen gas of atoms interacting via dipole-dipole potentials that vary as r3r^{-3}, where rr is the interatomic separation. We supply an exact result for a single atom in a given state interacting resonantly with a random gas of atoms in a different state. The time development of the transition process is calculated both on- and off-resonance, and the linewidth with respect to detuning is obtained as a function of time tt. We introduce a random spin Hamiltonian to model a dense system of resonators and show how it reduces to the previous model in the limit of a sparse system. We derive approximate equations for the average effective spin, and we use them to model the behavior seen in the experiments of Anderson et al. and Lowell et al. The approach to equilibrium is found to be proportional to exp(γeqt\exp (-\sqrt{\gamma_{eq}t}), where the constant γeq\gamma _{eq} is explicitly related to the system's parameters.Comment: 30 pages, 6 figure

    Genetic examination of historical North Atlantic right whale (Eubalaena glacialis) bone specimens from the eastern North Atlantic: Insights into species history, transoceanic population structure, and genetic diversity

    Get PDF
    Species monitoring and conservation is increasingly challenging under current climate change scenarios. For the North Atlantic right whale (Eubalaena glacialis) this challenge is heightened by the added effects of complicated and uncertain past species demography. Right whales once had a much wider distribution across the North Atlantic Ocean, although the degree to which right whales in the western and eastern North Atlantic were genetically isolated remains unknown. We analyzed DNA from 24 4th–20th century (CE) right whale bone specimens that were collected from 10 historical and archaeological sites in Iceland, the Faroe Islands, and Scotland. Following mtDNA species identification, we obtained 15-locus nuclear microsatellite profiles from a subset of eight specimens and compared these to contemporary data from animals remaining in the western North Atlantic population. While some specimens share mtDNA haplotypes with the contemporary population, several new haplotypes were found. Moderate mtDNA and nuclear differentiation between the two regions was identified (mtDNA: FST = 0.0423, ΦST = 0.041; nuclear DNA: FST = 0.024). Interpretation of the relationships between animals in the two regions is not simple, and this research highlights the difficulty in conducting such assessments in species with complex histories of unknown structure prior to extensive exploitation.publishedVersio

    Improving trial recruitment through improved communication about patient and public involvement : an embedded cluster randomised recruitment trial

    Get PDF
    Background: Evidence is emerging that patient and public involvement in research (PPIR) may improve recruitment into randomised controlled trials, but the best methods to achieve improvement are unclear. Although many trials use PPIR to improve design and conduct, many do not communicate their use of PPIR clearly to potential participants. Directly communicating PPIR might encourage participation through increased patient confidence and trust in a trial. We aimed to develop and evaluate the impact on recruitment an intervention communicating PPIR in a trial to potential participants. Methods: This study was embedded in EQUIP, a cluster randomised controlled trial which allocated mental health teams in England to either a training intervention group to improve service user and carer involvement in care planning, or to a control group (no training). We conducted a cluster randomised trial of a recruitment intervention communicating PPIR, embedded within the EQUIP trial. The principles underlying the intervention were informed by a systematic review and a workshop that included mental health service users and trialists. Working with EQUIP PPIR partners (service users and carers) we developed the intervention using a leaflet to advertise the nature and function of the PPIR. Professional graphic design optimised readability and impact. Patients identified as potentially eligible for EQUIP were randomised to receive the leaflet or not, alongside the standard trial information. The primary outcome was the proportion of participants enrolled in EQUIP. The secondary outcome was the proportion expressing interest in taking part. Results: 34 clusters (mental health teams) were recruited, and 8182 potential participants were randomised. Preliminary analyses show that for the primary outcome, 4% of patients receiving the PPIR leaflet were enrolled vs. 5.3% in the control group. For the secondary outcome 7.3% of potential participants receiving the PPIR leaflet responded positively to the invitation to participate, vs. 7.9% in the control group. Future analyses will be by intention-to-treat and use logistic regression to estimate between-group odds ratios (ORs) and corresponding 95% confidence intervals. A planned secondary analysis will explore whether the impact of the intervention is moderated by age and gender. Conclusion: In preliminary analysis of this large trial, communicating PPIR demonstrated no benefits for improving the numbers of potential participants expressing interest in the trial, and reduced trial enrolment. Our findings contrast with the literature suggesting PPIR benefits recruitment. We will discuss the potential reasons for this finding, along with implications for future recruitment practice and research
    corecore