Ultrastable reference pulser for high-resolution spectrometers

Solid-state double-pulse generator for a high resolution semiconductor detector meets specific requirements for resolution /0.05 percent/, amplitude range /0.1-13 MeV/, and repetition rate /0.1-1000 pulses per second/. A tag pulse is generated in coincidence with each reference pulse

The Geoff Egan Memorial Lecture 2011. Artefacts, art and artifice: reconsidering iconographic sources for archaeological objects in early modern Europe

A first systematic analysis of historic domestic material culture depicted in contemporaneous Western painting and prints, c.1400-1800. Drawing on an extensive data set, the paper proposes to methodologies and hermeneutics for historical analysis and archaeological correspondence

The ν\nu-cleus experiment: A gram-scale fiducial-volume cryogenic detector for the first detection of coherent neutrino-nucleus scattering

We discuss a small-scale experiment, called $\nu$-cleus, for the first detection of coherent neutrino-nucleus scattering by probing nuclear-recoil energies down to the 10 eV-regime. The detector consists of low-threshold CaWO$_4$ and Al$_2$O$_3$ calorimeter arrays with a total mass of about 10 g and several cryogenic veto detectors operated at millikelvin temperatures. Realizing a fiducial volume and a multi-element target, the detector enables active discrimination of $\gamma$, neutron and surface backgrounds. A first prototype Al$_2$O$_3$ device, operated above ground in a setup without shielding, has achieved an energy threshold of ${\sim20}$ eV and further improvements are in reach. A sensitivity study for the detection of coherent neutrino scattering at nuclear power plants shows a unique discovery potential (5$\sigma$) within a measuring time of ${\lesssim2}$ weeks. Furthermore, a site at a thermal research reactor and the use of a radioactive neutrino source are investigated. With this technology, real-time monitoring of nuclear power plants is feasible.Comment: 14 pages, 19 figure

Microwave and hard X-ray observations of a solar flare with a time resolution of better than 100 MS

Simultaneous microwave and X-ray observations are presented for a solar flare detected on 1980 May 8 starting at 1937 UT. The X-ray observations were made with the Hard X-Ray Burst Spectrometer on the Solar Maximum Mission and covered the energy range from 28-490 keV with a time resolution of 10 ms. The microwave observations were made with the 5 and 45 foot antennas at the Itapetinga Radio Observatory at frequencies of 7 and 22 GHz, with time resolutions of 100 ms and 1 ms respectively. Detailed correlation analysis of the different time profiles of the event show that the major impulsive in the X-ray flux preceded the corresponding microwave peaks at 22 GHz by about 240ms. For this particular burst the 22 GHz peaks preceded the 7 GHz by about 1.5s. Observed delays of the microwave peaks are too large for a simple electron beam model but they can be reconciled with the speeds of shock waves in a thermal model

Max Weber e o problema dos valores: as justificativas para a neutralidade axiológica

O presente artigo versa sobre um dos temas mais centrais das ciências sociais em geral e da obra weberiana em particular, qual seja, o debate em torno do engajamento ou do distanciamento do cientista em relação à realidade social que constitui seu objeto. No decorrer deste texto é realizado um escrutínio da posição de Max Weber em torno dessa questão, que é condensada na sua defesa de uma postura de "neutralidade axiológica". Mais do que identificar o sentido atribuído a esta ideia, o objetivo que norteou a pesquisa foi o de apreender as justificativas apresentadas por Weber para conferir sustentação a essa premissa. A primeira etapa da pesquisa consistiu em uma uma leitura estrutural de todos os textos de Max Weber que versam sobre o tema em questão e que compõem a coletânea Gesammelte Aufsätze zur Wissenschaftslehre, conforme explicitado de modo detalhado na segunda seção do artigo. A partir disso foram selecionados todos os trechos contendo a expressão "neutralidade axiológia" e outros termos correlatos, apresentados na tabela em anexo. Esses trechos foram então classificados e analisados em relação ao seu conteúdo, com o intuito de apreender as justificativas apresentadas pelo autor. Ao final, todos esses dados foram mobilizados e sintetizado de modo a se produzir considerações mais gerais sobre a teoria do autor em questão. O principal resultado da investigação, que é aqui apresentado, é uma compreensão mais ampla e profunda das justificativas subjacentes a uma das posições mais cruciais da sociologia weberiana, e que permite um posicionamento mais bem informado em relação a essa temática que ainda se mantém como um dos pilares das reflexões epistemológicas nas ciências sociais contemporâneas. Portanto, o artigo contribui para o debate lançando uma nova luz sobre as premissas que estruturam a defesa do princípio da neutralidade axiológica, explicitando que a defesa de tal princípio se deve a uma pluralidade de justificativas. Além disso, a discussão aqui apresentada permite compreender com mais clareza as consequências dessa defesa da neutralidade axiológica para a ciência e para a vida social

Distributed-Pair Programming can work well and is not just Distributed Pair-Programming

Background: Distributed Pair Programming can be performed via screensharing or via a distributed IDE. The latter offers the freedom of concurrent editing (which may be helpful or damaging) and has even more awareness deficits than screen sharing. Objective: Characterize how competent distributed pair programmers may handle this additional freedom and these additional awareness deficits and characterize the impacts on the pair programming process. Method: A revelatory case study, based on direct observation of a single, highly competent distributed pair of industrial software developers during a 3-day collaboration. We use recordings of these sessions and conceptualize the phenomena seen. Results: 1. Skilled pairs may bridge the awareness deficits without visible obstruction of the overall process. 2. Skilled pairs may use the additional editing freedom in a useful limited fashion, resulting in potentially better fluency of the process than local pair programming. Conclusion: When applied skillfully in an appropriate context, distributed-pair programming can (not will!) work at least as well as local pair programming

The Relationship Between Promise and Performance in State Intervention in Family Life

JUDGE MIDONICK: We have a fantastic representation of our alumni here and we\u27ve overdone our 10:00 starting time and we\u27re supposed to stop at 12:00 promptly in order for us to go to the Low Memorial Library for lunch, for those who are having lunch with us. In order to be on time for this afternoon\u27s extravaganza we really ought to begin now. You must understand this program is entirely unrehearsed and therefore will be more interesting. We have with us today a panel of four whom I will introduce as they are to speak. The first speaker will speak for about forty-five minutes and he has a paper to present; and then we will have the others. At the end of that time, there will be a forty minute fun and games period when everyone here is entitled to make remarks. We are fortunate to have with us Dean Monrad Paulsen of the University of Virginia School of Law whom we hadn\u27t expected and who will be able not only to ask questions but give answers during the last forty minute period. I myself am eagerly awaiting an answer or two. Now, to begin, the paper which is to be given on the subject of the relationship between promise and performances in state intervention in family life will be given by Peter L. Strauss, Associate Professor of Law, Columbia Law School. His background is Harvard \u2761 in physics and chemistry, strangely, and so we have a person who is very well rounded and his law degree comes from Yale in 1964. He was editor-in-chief of the Yale Law Journal – he clerked as a law assistant for not only the Chief Judge of the Court of Appeals in the District of Columbia, David Bazelon, who is a great expert on child problems in the court himself, but Professor Strauss clerked after that for United States Supreme Court Justice William Brennan. He taught criminal law for two years at the Haile Sellassie I University in Addis Ababa, Ethiopia, and for three years was assistant to the Solicitor General of the United States. He joined Columbia\u27s faculty this fall, so be very gentle with him