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41.
We examine the influence of various political actors on the substance and timing of presidential orders. Specifically, we analyze President John F. Kennedy’s decision to issue E. O. 11063, which directed the federal bureaucracy to eliminate discrimination in the sale or lease of residential property overseen by the federal government. We show that this order did not result solely from Kennedy’s policy preferences; rather, it was a product of persuasion by several political actors who coaxed Kennedy to act. This reinforces previous findings that the president’s power of the pen is often conditioned by the informal political costs of unilateral executive action. 相似文献
42.
Jacob Witzell 《European Planning Studies》2019,27(7):1413-1431
Planning of transport infrastructure in Sweden has undergone successive legislative changes as well as neoliberal corporatization and marketization reforms in recent years, with a general aim to increase efficiency and effectiveness. This paper presents planning practitioners’ experiences of far-reaching marketization of physical planning practice in line with a strategy within the Swedish Transport Administration (STA) to become a ‘Pure Purchaser’. The strategy implies that all practical planning work should be carried out by procured consultants. The paper follows a qualitative, explorative approach based on document studies and interviews with practitioners actively involved in carrying out physical planning of road and rail investments. The concept of ‘modes of governance’ is applied to highlight and analytically interpret differences in perspectives on efficient and effective governance as expressed in the planning legislation, and the STA marketization strategy, respectively. The empirical results make evident that the recent marketization reforms are generally perceived as strongly and negatively affecting the efficiency and effectiveness of planning practices while also circumscribing professional discretion. The study highlights the importance of specific organization and management perspectives as explanatory factors in studying efficiency and effectiveness of planning practices. 相似文献
43.
Kēhaulani Vaughn Jacob Fitisemanu Jr. Inoke Hafoka Kehaulani Folau 《Oceania; a journal devoted to the study of the native peoples of Australia, New Guinea, and the Islands of the Pacific》2020,90(Z1):60-67
Pacific Islanders in diaspora are disproportionately contracting COVID-19, experience hospitalization and develop complications. In Utah, Pacific Islanders have the highest contraction rate in the state. Pacific Islanders constitute only 2% of the state's population, but represent 4% of the those infected with COVID-19, begging the question how we might explain the high rates of contraction? As community engaged scholars and practitioners, we offer discussion, insight, and commentary on the COVID-19 pandemic affecting Pacific Islanders in Utah. Grounding this discussion is a history of the Pacific Islander community as an essential workforce that dates back to the 1850s, before statehood. We argue that historical discrimination against these early Pacific Islanders shaped the way this group is racialized as essential laborers today. The authors offer this assertion along with practices and protocols that honour cultural norms of socialization, which we see is the pathway to provide safe measures that are relevant to the Utah Pasifika community. 相似文献
44.
Ground‐Penetrating Radar Velocity Determination and Precision Estimates Using Common‐Midpoint (CMP) Collection with Hand‐Picking,Semblance Analysis and Cross‐Correlation Analysis: A Case Study and Tutorial for Archaeologists
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The most crucial parameter to be determined in an archaeological ground‐penetrating radar (GPR) survey is the velocity of the subsurface material. Precision velocity estimates comprise the basis for depth estimation, topographic correction and migration, and can therefore be the difference between spurious interpretations and/or efficient GPR‐guided excavation with sound archaeological interpretation of the GPR results. Here, we examine the options available for determining the GPR velocity and for assessing the precision of velocity estimates from GPR data, using data collected at a small‐scale iron‐working site in Rhode Island, United States. In the case study, the initial velocity analysis of common‐offset GPR profile data, using the popular method of hyperbola fitting, produced some unexpectedly high subsurface signal velocity estimates, while analysis of common midpoint (CMP) GPR data yielded a more reasonable subsurface signal velocity estimate. Several reflection analysis procedures for CMP data, including hand and automated signal picking using cross‐correlation and semblance analysis, are used and discussed here in terms of efficiency of processing and yielded results. The case study demonstrates that CMP data may offer more accurate and precise velocity estimates than hyperbola fitting under certain field conditions, and that semblance analysis, though faster than hand‐picking or cross‐correlation, offers less precision. 相似文献
45.
Gaussian Process Regression and Bayesian Model Averaging: An Alternative Approach to Modeling Spatial Phenomena
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Gaussian Process Regression (GPR) is a nonparametric technique that is capable of yielding reliable out‐of‐sample predictions in the presence of highly nonlinear unknown relationships between dependent and explanatory variables. But in terms of identifying relevant explanatory variables, this method is far less explicit about questions of statistical significance. In contrast, more traditional spatial econometric models, such as spatial autoregressive models or spatial error models, place rather strong prior restrictions on the functional form of relationships, but allow direct inference with respect to explanatory variables. In this article, we attempt to combine the best of both techniques by augmenting GPR with a Bayesian Model Averaging (BMA) component that allows for the identification of statistically relevant explanatory variables while retaining the predictive performance of GPR. In particular, GPR‐BMA yields a posterior probability interpretation of model‐inclusion frequencies that provides a natural measure of the statistical relevance of each variable. Moreover, while such frequencies offer no direct information about the signs of local marginal effects, it is shown that partial derivatives based on the mean GPR predictions do provide such information. We illustrate the additional insights made possible by this approach by applying GPR‐BMA to a benchmark BMA data set involving potential determinants of cross‐country economic growth. It is shown that localized marginal effects based on partial derivatives of mean GPR predictions yield additional insights into comparative growth effects across countries. 相似文献
46.
47.
Jacob Morales Guillem Pérez-Jordà Leonor Peña-Chocarro Lydia Zapata Mónica Ruíz-Alonso Jose Antonio López-Sáez Jörg Linstädter 《Journal of archaeological science》2013
This research aims to shed light on the early stages of agricultural development in Northern Africa through the analysis of the rich macro-botanical assemblages obtained from Ifri Oudadane, an Epipalaeolithic–Early Neolithic site from North-East Morocco. Results indicate the presence of domesticated plants, cereals (Hordeum vulgare, Triticum monococcum/dicoccum, Triticum durum and Triticum aestivum/durum) and pulses (Lens culinaris and Pisum sativum) in the Early Neolithic. One lentil has been dated to 7611 ± 37 cal BP representing the oldest direct date of a domesticated plant seed in Morocco and, by extension, in North Africa. Similarities in both radiocarbon dates and crop assemblages from Early Neolithic sites in Northern Morocco and the Iberian Peninsula suggest a simultaneous East to West maritime spread of agriculture along the shores of the Western Mediterranean. Wild plants were abundantly collected in both the Epipalaeolithic and the Early Neolithic periods pointing to the important role of these resources during the two periods. In addition to fruits and seeds that could have been consumed by both humans and domesticated animals, fragments of esparto grass (Stipa tenacissima) rhizomes have been identified. This is a western Mediterranean native plant that may have been used as a source of fibres for basketry. 相似文献
48.
Jacob C. Miller 《Social & Cultural Geography》2013,14(8):869-887
In recent years, scholars have focused on how affective life becomes implicated in biopolitical interventions in a variety of spaces, including spaces of consumption. Less has been said about how the emotional domain also becomes a space of biopolitics. Drawing on ethnographic fieldwork at a mall in Buenos Aires, this paper attends to this link and outlines a methodology that generates insight into the layers of intimacy that help shape these social and political spaces. What I am calling images of critical intimacy point to how these biopolitical spaces may be operating today and also what their limits appear to be. 相似文献
49.
Jacob Darwin Hamblin 《History & Technology》2013,29(1):25-48
Although President Eisenhower’s 1953 ‘Atoms for Peace’ speech typically is associated with the promotion of nuclear power, it also recommended other peaceful uses of the atom, including applications in agriculture. ‘Developing’ countries in particular took a keen interest in food preservation, grain disinfestation, fertilizer studies, insect control, and mutation breeding, all using irradiation. A conflict of philosophies emerged at the United Nations between the Food and Agriculture Organization (FAO) and the International Atomic Energy Agency (IAEA). The IAEA stood accused of promoting a narrow range of technological solutions, ignoring more sensible but less sensational techniques, and tempting the poorest countries of the world to achieve ‘modernization’ with unproven technologies. The present essay outlines the origins of FAO/IAEA conflict and collaboration in the 1960s, and explores the failed effort of plant geneticist Ronald Silow to stop what he saw as the IAEA’s hijacking of agriculture at the UN. 相似文献
50.