682 research outputs found
Electric field investigations and a model of electrical spraying of liquids
The equation E = [2 V] [over] [N 1n(4d/N] has been used for determining the electric field at the liquid tip in electrical spraying of liquids. Data were taken at the instant of spraying in an attempt to experimentally verify this equation. The results indicate that the value given by the equation needs to be increased by about 20% in the normal range of operation. A model for the spraying mechanism of the liquid is also proposed --Abstract, page ii
Groundwater study of the Moora townsite
A groundwater study of the townsite of Moora. It aimed to accelerate the implementation of effective salinity management options. The study consisted of drilling investation and installation of a piezometer network, a pumping test, groundwater flow modelling and a flood risk analysis
We do not make pacts with communists : The Evolving Rhetoric of Argentine President Javier Milei in Relation to China
This presentation analyzes the rhetoric of current Argentinian head-of-state Javier Milei—who was recently elected president in November of 2023—in relation to China. Chinese investment in Latin America has grown tremendously since the turn of the millennium, demonstrated by the exponential increase in commerce due in large part to a number of Beijing-aligned, left-leaning Latin American governments. Though his predecessor Alberto Fernández had accepted an invitation to join the BRICS trading bloc, whose most prominent member is China, the “liberal libertarian” Javier Milei maintained an aggressive stance against China during his campaign and subsequently declined the invitation. Despite these combative initial statements, rhetorical analysis from campaign to office displays a tonal shift that could signal the trajectory of Sino-Argentine policy for the next four years. This backtracking in Milei’s stance is evidenced by a softening of language in official and ad-hoc means; Milei originally employed inflammatory, deliberative rhetoric on the campaign trail that stigmatized communism, and by extension, China, as he also promised, again using deliberative rhetoric, to distance Argentina from China. However, in the wake of his inauguration and with the fulfillment of said promises yet to be seen, the president has opted for more positive, epideictic remarks towards China. This presentation begins by identifying the Sino-Argentine economic linkages and then, —through the integration of official statements, interviews, and social media interactions—charts and highlights the changes in the rhetoric used by Milei. His recent comments towards Beijing articulate the commercial and geopolitical connections between Argentina and China, and his practical approach shows an evolving understanding of a nation’s obligation to maintain connections with strong trading partners, even in the face of ideological differences. Future research could continue to analyze presidential rhetoric in relation to foreign policy, particularly China
Integration of Arrival-Time Datasets for Consistent Quality Control: A Case Study of Amphibious Experiments along the Middle America Trench
We have integrated waveform and arrival-onset data collected in Costa Rica as part of the National Science Foundation (NSF)-sponsored Costa Rica Seismogenic Zone Experiment (CRSEIZE) and along central Costa Rica and Nicaragua as part of the German SFB 574 program. The five arrays, composed of different sensor types (one-and three-component land and ocean bottom seismometers and hydrophones), were archived using different software packages (Antelope and SEISAN) and were automatically and manually picked using various quality criteria resulting in a disparate set of pick weights. We evaluate pick quality using automated arrival detection and picking algorithm based on the wavelet transform and Akaike information criterion picker. The consistency of the arrival information over various scales provides a basis for assigning a quality to the analyst pick. Approximately 31% of P arrival times and 26% of S times have been classified as high-quality picks (quality 0-1). An additional 21% of P times and 27% of S arrivals are good quality (quality 2-3). The revised quality picks are mapped directly into new pick weights for inversion studies. We explore the effect of new weighting and removal of poor data by relocating hypocenters through a minimum 1D velocity model and conducting double-difference local earthquake tomography (LET). Analysis of the hypocenter relocation and seismic velocity tomography results suggest that using the improved quality determinations have a greater effect on improving sharpness in the velocity images than on the magnitude of hypocentral movement
“The Most Hopeful Time”: A Contextualization and Evaluation of Northern Irish Student Activism on the Cusp of the Troubles
This paper examines the origins and course of Queen’s University student activism in late-1960s Belfast, on the ‘cusp’ of the Northern Irish Troubles. Many Americans are familiar with the history of student riots in the U.S. in the late 1960s; however, far fewer Americans realize that nearly the entire western world was similarly embroiled in such riots, most of which converged in the year 1968. Northern Ireland, a part of the United Kingdom that seems to defy definition as a political entity (particularly among its own people, who may describe it as a country, region, or province), was not immune to this trend in the late 1960s. Northern Ireland is unique, however, in that its civil rights demonstrations eventually devolved into a violent civil conflict, called the Troubles, which lasted roughly three decades. Shadowed to a certain extent by the proceeding years’ turmoil, the increasing prevalence of paramilitary violence within that time, and even the more widely-studied activities of community-based pressure groups, the role of ‘peaceful-yet-radical’ Queen’s University student activists in the Northern Irish civil rights movement is often overlooked. Thus, through analyses of primary and secondary sources, this research discusses the history of Protestant and Catholic tensions in Northern Ireland, the origins of the wider Northern Irish Catholic civil rights movement in the 1960s, and the development and early evolution of Queen’s University student activists’ aims and leadership. In this way, this research contextualizes and evaluates the student- and youth-led dimension of the civil rights movement that swept through Northern Ireland in the late 1960s and ultimately set the terms for the proceeding sectarian conflict
Fat-Pad Specific Effects of Lipectomy on Appetitive and Consummatory Ingestive Behaviors in Siberian Hamsters (Phodopus sungorus)
The aim of this experiment was to test whether LIPX-induced decreases in body fat affect appetitive (foraging effort and food hoarding) or consummatory (food intake) ingestive behaviors and whether the effects of LIPX on these behaviors is in turn affected by changes in energy expenditure produced by varying the amount of work required to obtain food. This was accomplished by housing male Siberian hamsters (Phodopus sungorus) in a foraging/hoarding apparatus where food pellets (75 mg) could be earned by completing various wheel running requirements. Requiring a foraging effort (10 revolutions/pellet) abolished the normal compensation of WAT mass by the non-excised WAT pads that typically follows IWATx or EWATx. After foraging, food hoarding was increased more than food intake when hamsters were required to forage for food (10 revolutions/pellet). The magnitude of the LIPX-induced lipid deficit (IWATx \u3e EWATx) did not correspond to a proportional change in either appetitive or consummatory ingestive behaviors
Groundwater study of the Wongan Hills townsite
A groundwater study was carried out in the townsite of Wongan Hills, Western Australia. It aimed to accelerate the implementation of effective salinity management options. The study consisted of a drilling investigation, installation of a piezometer network, a pumping test, groundwater flow modelling and a flood risk analysis
BMI at Diagnosis and its Association With Markers of HIV Disease Progression and Cardiovascular Disease Risk.
Highly active antiretroviral treatment (HAART) has transformed the state of human immunodeficiency virus (HIV) from acute to chronic. As a result, the long-term effect of HAART has caused weight gain among HIV-infected individuals, leading to an increased prevalence of overweight and obesity. Increased Body Mass Index (BMI) has been associated with adverse health outcomes in non-HIV and HIV populations, yet among HIV-infected individuals, a higher BMI at diagnosis offers a slower progression from HIV to AIDS. Pre-HAART, studies reported that obese HIV-infected individuals have higher increases in CD4 count over time. However post-HAART, some report that overweight HIV-infected individuals with a higher BMI experience increased CD4 counts. In addition, HIV-infected treated individuals are now experiencing cardiovascular disease outcomes. Therefore, additional research is needed to support current evidence. Given that our study population consists of individuals from South Carolina, a state with a high prevalence of HIV and obesity, it is beneficial to explore the relationship between BMI at diagnosis and markers for HIV progression and cardiovascular disease risk. This cohort study consisted of 396 HIV-infected adults from the Ryan White Clinic in SC. The objectives of this study were to evaluate the relationship between BMI at diagnosis and CD4 count over time, to evaluate this relationship by gender, and to evaluate the relationship between BMI at diagnosis and cardiovascular disease risk markers (high-density lipoprotein(HDL), low-density lipoprotein (LD), systolic blood pressure (SBP), diastolic blood pressure (DBP), and fasting blood glucose)
Stochastic analysis and probabilistic downscaling of soil moisture
2018 Summer.Includes bibliographical references.Many applications require fine-resolution soil-moisture maps that exhibit realistic statistical properties (e.g., spatial variance and correlation). Existing downscaling models can estimate soil-moisture based on its dependence on topography, vegetation, and soil characteristics. However, observed soil-moisture patterns also contain stochastic variations around such estimates. The objectives of this research are to perform a geostatistical analysis of the stochastic variations in soil moisture and to develop downscaling models that reproduce the observed statistical features while including the dependence on topography, vegetation, and soil properties. Extensive soil-moisture observations from two catchments are used for the geostatistical analysis and model development, and two other catchments are used for model evaluation. The Equilibrium Moisture from Topography, Vegetation, and Soil (EMT+VS) model is used to downscale soil moisture, and the difference between the point measurements and the EMT+VS estimates are considered to be the stochastic variations. The stochastic variations contain a temporally stable pattern along with temporally unstable patterns. All of these patterns include spatially correlated and uncorrelated variations. Moreover, the spatial variance of the stochastic patterns increases with the mean moisture content. The EMT+VS model can reproduce the observed statistical features if it is generalized to include stochastic deviations from equilibrium soil moisture, variations in porosity, and measurement errors. It can also reproduce most observed properties if stochastic variations are inserted directly in its soil moisture outputs. These analyses and downscaling models provide insight into the nature of stochastic variations in soil moisture and can be further tested by application to other catchments and larger regions
Javier Milei, FENÓMENO BARRIAL: Political Slogans as Narrative
Javier Milei won Argentina’s 2023 presidential race to the surprise of many. His prolific use of political slogans on social media has continued into his presidency, contextualizing his agenda and the potential image he seeks to project when pursuing reelection in 2027. This investigation conducts a critical reading of Javier Milei’s political slogans through the lens of Walter R. Fisher’s narrative paradigm, identifying a clear narrative arc that portrays Milei as a populist political outsider, villainizes the political elite of Argentina, and promises a thriving Argentina rooted in libertarian fiscal policy. The subsequent rhetorical analysis integrates quantitative and qualitative assessments of Javier Milei’s social media activity, determining that these political slogans possess the paradigm’s components of narrative coherence and narrative fidelity and moreover indicate a potential narrative for Milei to assume throughout the remainder of his time in office
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