3,443 research outputs found
Zigi Ben-Haim
No full textZimmer highlights the futuristic aspects of Ben-Haim's paper and rope works. Biographical notes. 9 bibl. ref
Faculty Recital, Gila Goldstein, September 16, 2013
No full textThis is the concert program of the Faculty Recital, Gila Goldstein performance on Monday, September 16, 2013 at 8:00 p.m., at the Boston University Concert Hall, 855 Commonwealth Avenue, Boston, Massachusetts. Works performed were Partita no. 6 in E minor by Johann Sebastian Bach; Polonaise op. 26 no. 1 in C# minor, Nocturne op. 62 no. 1 in G major, and Barcarolle op. 60 in F# major by Frédéric Chopin; Vallée d'Obermann by Franz Liszt; and Five Pieces op. 34 by Paul Ben-Haim. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
Pitfalls and artifacts using the D-SPECT dedicated cardiac camera
No full textMyocardial perfusion imaging is a well-established and widely used imaging technique for the assessment of patients with known or suspected coronary artery disease. Pitfalls and artifacts associated with conventional gamma cameras are well known, and the ways to avoid and correct them have been described. In recent years solid-state detector dedicated cardiac cameras were introduced and have been shown to offer improved accuracy in addition to new imaging protocols and novel applications. The purpose of this manuscript is to familiarize the readers with the causes and effects of technical, patient-related, and operator-related pitfalls and artifacts associated with the D-SPECT dedicated cardiac camera with solid-state detectors. The manuscript offers guidance on how to avoid these factors, how to detect them, and how to correct better for them, providing high-quality diagnostic images
Managing uncertainty through robust-satisficing monetary policy
No full textWe employ information-gap decision theory to derive a robust monetary policy response to Knightian parameter uncertainty. This approach provides a quantitative answer to the question: For a specified policy, how much can our models and data err or vary, without rendering the outcome of that policy unacceptable to a policymaker? For a given acceptable level of performance, the policymaker selects the policy that delivers acceptable performance under the greatest range of uncertainty. We show that such information-gap robustness is a proxy for probability of policy success. Hence, policies that are likely to succeed can be identified without knowing the probability distribution. We adopt this approach to investigate empirically the robust monetary policy response to a supply shock with an uncertain degree of persistence.Knightian uncertainty, Monetary policy, Info-gap decision theory.
UNSCOP and the Arab–Israeli conflict: the road to partition
No full text[Book Review]: UNSCOP and the Arab–Israeli conflict: the road to partition by Elad Ben-Dror (translated by Haim Watzman) (Abingdon and New York: Routledge, 2023). 272pp., index., £35.09 (e-book), £120 (hardback), ISBN 9781003200079; 978-1-03-205963-
Robustness - a challenge also for the 21st century: A review of robustness phenomena in technical, biological and social systems as well as robust approaches in engineering, computer science, operations research and decision aiding
No full textNotions on robustness exist in many facets. They come from different disciplines and reflect different worldviews. Consequently, they contradict each other very often, which makes the term less applicable in a general context. Robustness approaches are often limited to specific problems for which they have been developed. This means, notions and definitions might reveal to be wrong if put into another domain of validity, i.e. context. A definition might be correct in a specific context but need not hold in another. Therefore, in order to be able to speak of robustness we need to specify the domain of validity, i.e. system, property and uncertainty of interest. As proofed by Ho et al. in an optimization context with finite and discrete domains, without prior knowledge about the problem there exists no solution what so ever which is more robust than any other. Similar to the results of the No Free Lunch Theorems of Optimization (NLFTs) we have to exploit the problem structure in order to make a solution more robust. This optimization problem is directly linked to a robustness/fragility tradeoff which has been observed in many contexts, e.g. 'robust, yet fragile' property of HOT (Highly Optimized Tolerance) systems. Another issue is that robustness is tightly bounded to other phenomena like complexity for which themselves exist no clear definition or theoretical framework. Consequently, this review rather tries to find common aspects within many different approaches and phenomena than to build a general theorem for robustness, which anyhow might not exist because complex phenomena often need to be described from a pluralistic view to address as many aspects of a phenomenon as possible. First, many different robustness problems have been reviewed from many different disciplines. Second, different common aspects will be discussed, in particular the relationship of functional and structural properties. This paper argues that robustness phenomena are also a challenge for the 21st century. It is a useful quality of a model or system in terms of the 'maintenance of some desired system characteristics despite fluctuations in the behaviour of its component parts or its environment' (s. [Carlson and Doyle, 2002], p. 2). We define robustness phenomena as solution with balanced tradeoffs and robust design principles and robustness measures as means to balance tradeoffs. --
Parameters – Full Issue – Autumn 2015
No full textSpecial Commentary: Soldiers Fighting Alone by Patrick Porter Strategic Leadership by William E. Rapp, Jason W. Warren Countering Gray-Zone Wars by Jakub Grygiel, William G. Pierce, Douglas G. Douds, & Michael A. Marra Thinking Strategically by Yakov Ben-Haim, David Patrick Houghton Regional Challenges by Ted Middleton, Daniel Morga
The manuscript as a medium. A critical look at the circulation of the Sefer Ḥizzuq Emunah by Isaac ben Abraham Troki (c. 1533-1594)
No full textThis paper looks at how the manuscript form of the Jewish anti-Christian
polemical text Sefer Hizzuq Emunah (Strengthening of the Faith) was
circulated and received. The text was written in the late sixteenth century
by Karaite scholar Isaac ben Abraham Troki (c.1533-1594) and it contains
powerful attacks to Christianity, to the Gospels and an interesting critical
representation of Jesus of Nazareth. The importance of this text is also due to
the exceptional attention that has been given to it by some European intellectuals,
among whom H.S. Reimarus (1694-1768), recognized as the pioneer of
the Quest of the Historical Jesus. In these pages, the focus is on the presence
of the text in the “Ets Haim” library in Amsterdam, which preserves a rich
documentation of copies and translations of the Sefer Hizzuq Emunah. These
translations seemingly represented an excellent opportunity for non-Jewish
readers to approach this polemical work
Extraction of the
No full textUsing recent measurements of the b-quark fragmentation distribution obtained in events, registered at the Z pole, the non-perturbative QCD component of the fragmentation distribution has been extracted independently of any hadronic physics modelling. This distribution depends only on the way the perturbative QCD component has been defined. When the perturbative QCD component is taken from a parton shower Monte-Carlo, the non-perturbative QCD component is rather similar with those obtained from the Lund or Bowler models. When the perturbative QCD component is the result of an analytic NLL computation, the non-perturbative QCD component has to be extended in a non-physical region and thus cannot be described by any hadronic modelling. In the two examples, used to characterize these two situations, which are studied at present, it happens that the extracted non-perturbative QCD distribution has the same shape, being simply translated to higher-x values in the second approach, illustrating the ability of the analytic perturbative QCD computation to account for softer gluon radiation than with a parton shower generator
- …
