1,855 research outputs found

    Hacia una historia universal de los anticuarios

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    Historians of archaeology have traditionally seen antiquarianism in opposition to archaeology. According to this view, archaeology came of age at the beginnings of the 19th century when European scholars were able to take the great step forward that bridged the gap between antiquarianism and archaeology. In this paper, I explore the history of antiquarian research from classical antiquity until the 18th century. In particular, I examine how the notion of antiquarianism has articulated an understanding of the relationship between memory and forgetting that is essential to understand modern conceptions of the past.Tradicionalmente, los historiadores de la arqueología han opuesto anticuarismo y arqueología. Así, de acuerdo con una interpretación muy extendida, la arqueología habría alcanzado su mayoría de edad a principios del siglo XIX al avanzar desde el mera recolección anticuaria al desarrollo de la arqueología científica. En este artículo, examino la historia del anticuarismo desde la Antigüedad hasta la Europa moderna. En particular, analizo cómo la noción de anticuarismo articula una interpretación de la relación entre memoria y olvido que es fundamental para comprender la concepción moderna del pasado

    Torn away

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    Why am I so afraid all the time? Why do I feel so alone? Why can\u27t I just be like everyone else? This thesis is an attempt to find answers to these and other questions that I face every day—it unearths the very assumptions and perceptions that make up the reality I experience. My strategy is to create a visual context, a common denominator with the outside world so differences and inaccuracies between my perceptions and those of others\u27 become readily apparent. Magazines are a real, physical part of our common cultural landscape and they play a role, even if only a small one, in how we understand the world at large. By collaging magazine images I can reshape the reality they present into something more familiar to my own and hopefully, in the process, learn how to reshape my life into the one I long for

    Two Projects from the metaLAB (at) Harvard

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    The presentation of these two projects the metaLAB (at) Harvard complements Jeffrey Schnapp's interview published in the section Perspectives of this issue of Humanist Studies and the Digital Age. The first project, A Flitting Atlas of the Human Gaze, performs an art historical experiment. The second project, Their Names, is an online Denkmal or monument that visualizes the names of 28,000+ fatal encounters with American police dating from the year 2000 up until the death of George Floyd on May 25, 2020

    Affect and Cognitive Failures: A Comparison of Positive and Negative Mood Factors

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    Two Projects from the metaLAB (at) Harvard

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    The presentation of these two projects the metaLAB (at) Harvard complements Jeffrey Schnapp's interview published in the section Perspectives of this issue of Humanist Studies and the Digital Age. The first project, A Flitting Atlas of the Human Gaze, performs an art historical experiment. The second project, Their Names, is an online Denkmal or monument that visualizes the names of 28,000+ fatal encounters with American police dating from the year 2000 up until the death of George Floyd on May 25, 2020

    Sensitive Question Techniques and Careless Responding: Adjusting the Crosswise Model for Random Answers

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    The crosswise model is a popular sensitive question technique often considered more accurate than direct questioning. When this technique is used, a sensitive question is paired with a nonsensitive question that has a known prevalence and respondents are asked to give a joint answer to the pair of questions. Recent research has shown that prevalence estimates based on the crosswise model are biased towards 50% when respondents answer randomly, and that random answers are frequent. I develop methods to adjust the crosswise model for self-reported random answers. Results from an exploratory online survey (n = 103) show that (i) fewer respondents report random answers than might be expected given unadjusted results, (ii) results differ considerably between questions, and (iii) one of three questions yields an estimate that is substantially and significantly above the true value even after adjusting for random answers

    A New Model for Creative Education

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    This project explored the design of a pedagogical model for the development of creativity, targeted for teachers and educational institutions. The development of creativity has become highly relevant over the past few decades, especially with the emphasis given to 21st Century Skills and the responsibility that schools have on fostering these skills. In this project, you will find the ideas based on research and experience, that were the foundation for the model, the creative process behind the design of the model, and the final version. The project was shared with experts who validated parts of the model and opened space for further development. The final version of this model is of great value for educators’ professional development and further research in the development of creativity in education

    Extreme Value Analysis of Rainfall Events Over the Kennedy Space

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    The use of observational datasets to determine the occurrence frequencies of extreme weather events has gained a lot of recent interest due to concerns about the potential regional impacts from global climate change. Extreme-value theory can quantify the return frequency of the most extreme events, using climatologically short data sets and the assumption that such short climatological periods are stationary. However, the resulting analyses must be used with caution since they may not accurately reflect the potential of extreme events in the future due to climate change and variability. Accurately predicting extreme-event likelihood is important for building realistic long-range planning scenarios for a number of weather- and climate-sensitive interests. This study used extreme-value theory to analyze a short period (15-year), high-density rainfall dataset from NASA Kennedy Space Center’s observational network. This data was acquired through the Tropical Rainfall Measurement Mission archive website. The researcher employed the National Center for Atmospheric Research’s Extremes statistical software package for the analysis of 24-hour rainfall at the locations of the 32 tipping-bucket gauges in the network. This type of analysis is highly sensitive to data that may have been misreported, invalid, or missing, therefore, additional quality control was required. The quality-controlled rainfall gauge data was subsequently gridded using a Barnes-style objective analysis with minimal smoothing, in order to estimate missing values while preserving maxima in the initial data. The high-resolution gridded rainfall data was used by the Extremes program to estimate a series of event return levels over the studied region. Analyses of the gridded data show that that the 100-year events are around 315 mm and 433 mm for 24-hour and 72-hour durations, respectively. The wet-season analysis 100-year event estimation was around 426 mm and is similar to the yearly analysis, indicating that the majority of the annual extremes are from wet-season events. The yearly and wet-season 100-year return levels appear to be realistic and consistent with previous literature and estimates from the longer period of record at Titusville; however, some results from the dry-season analysis do not appear to be realistic, as they indicate the rainfall frequency distribution has an abnormally bounded tail shape. The dry-season 100-year return-levels are likely greater than the 170 mm model consensus produced from the analysis of the gridded data. The better-behaved Titusville analysis suggests the dry-season 100-year return level is around 250 mm. Findings indicate large uncertainty associated with long-period estimates and high spatial variations in rainfall extremes across the Kennedy Space Center region

    Ministerial bureaucracies as stand-in agenda setters? A comparative description

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    "This paper sets out to theoretically conceptualise and empirically describe the potential ability of ministerial bureaucracies to influence policy-making. The theoretical framework describes the chances for bureaucracies to influence policy-making as accruing from three sources: the organisational structures of the bureaucracy itself, room for bureaucratic discretion resulting from the preference configurations of the political actors, and the chance for the bureaucracy to act as political agenda setter rather than politicians. A quantitative empirical description of 21 OECD-countries is presented with the aim of comparing the relative strengths of the national ministerial bureaucracies. The paper concludes with an empirical classification of administrative systems. Japan, Belgium, and Ireland are found to be countries with a strong position for the bureaucracy in all of the theoretically described dimensions. The opposite end of the spectrum is marked by New Zealand, where the bureaucracy appears to be comparatively weak." (author's abstract)"In dieser Arbeit wird versucht, die Möglichkeiten von Ministerialverwaltungen zur Beeinflussung politischer Entscheidungsprozesse theoretisch zu fassen und anschließend quantitativ zu beschreiben. Das theoretische Konzept beschreibt den Einfluss von Bürokratien als aus drei Quellen kommend: den Organisationsstrukturen der Bürokratie selbst, dem Entscheidungsspielraum, der ihr als Folge bestimmter Präferenzkonstellationen der politischen Akteure erwächst, sowie der Möglichkeit der Bürokratie, unter bestimmten Umständen die Setzung der politischen Tagesordnung anstelle der politischen Akteure zu übernehmen. Mit dem Ziel eines Vergleichs der relativen Einflussposition ihrer nationalen Ministerialbürokratien wird eine quantitative Beschreibung der Ministerialverwaltungssysteme von 21 OECD-Ländern geliefert. Die Arbeit schließt mit einer empirischen Klassifikation von Verwaltungssystemen. Japan, Belgien und Irland werden als Länder beschrieben, in denen die Ministerialbürokratie auf allen drei theoretisch etablierten Dimensionen relativ einflussstark ist. Das andere Ende des Einflussspektrums wird von Neuseeland mit einer vergleichsweise schwachen Bürokratie eingenommen." (Autorenreferat

    Linear-Quadratic Control of a MEMS Micromirror Using Kalman Filtering

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    The deflection limitations of electrostatic flexure-beam actuators are well known. Specifically, as the beam is actuated and the gap traversed, the restoring force necessary for equilibrium increases proportionally with the displacement to first order, while the electrostatic actuating force increases with the inverse square of the gap. Equilibrium, and thus stable open-loop voltage control, ceases at one-third the total gap distance, leading to actuator snap-in. A Kalman Filter is designed with an appropriately complex state dynamics model to accurately estimate actuator deflection given voltage input and capacitance measurements, which are then used by a Linear Quadratic controller to generate a closed-loop voltage control signal. The constraints of the latter are designed to maximize stable control over the entire gap. The design and simulation of the Kalman Filter and controller are presented and discussed, with static and dynamic responses analyzed, as applied to basic, 100 micrometer by 100 micrometer square, flexure-beam-actuated micromirrors fabricated by PolyMUMPs. Successful application of these techniques enables demonstration of smooth, stable deflections of 50% and 75% of the gap
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