Hugo Steiner-Prag giving the opening address at the International Book Arts Exhibition; Leipzig.

Verso: Internationale Buchkunstausstellung Leipzing 1927. Eroeffnungsfeier in der Aula der Universitaet Prof. Hugo Steiner-Prag, Praesident der Austellung und I. Vors. des Vereins "Deutsche Buchkuenstler" haelt die Festrede

Hans Krakauer and Elizabet Gottschalk on their wedding day.

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Ella Hausman with two unidentified children on a beach; V-J Day Portraits Groups

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Portrait of Ilse Bergen on her first day of school holding the candy bag traditional for the occasion (Schultuete) Portraits Children

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Members of Chewra Kadischa (Burial Society) of the Klaus Synagogue, Mannheim, taken one day before the November Pogrom (Kristallnacht) Portraits; Groups; Men

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Hans Krakauer and Elizabet Gottschalk on their wedding day.

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Henry H. Goldschmidt Gould and Dorothea (Dola) Guttmann on their wedding day Portraits Couples

Henry, July 15, 1914-August 6, 1978

Audience members watching the opening ceremonies of the Heidelberg festival, with opening speech given by Thomas Mann.

Typed caption: Festakt in der Stadthalle zur Eroeffnung der Heidelberger Festpiele 1929. Thomas Mann hielt die Festrede. Unsere Aufnahme zeigt einen Ausschnitt aus der Festversammlung, an der die geistige Prominenz Heidelbergs und zahlreiche bedeutende Persoenlichkeiten des deutschen Kulturlebends teilnahmen. Von links nach rechts in der 1. Reihe: Rene Schickele, Rudolf Rittner, Gustav Hargung, Prof. Dr. Martin Dibelius, Gerhart Hauptmann, Dr. Rudolf H. Goldschmidt, Oberbuergermeister Dr. Neinhaus, Thomas Mann und Frau, Kultusminister Leers, Rudolf G. Binding; In der 3. Reihe: Oberbaurat L. Schmieder, Nobelpreistraeger Dr. F. Bergius, Bankdirektor Fremerey, Prof. Hellpach, Prof. Radbruch

Opening concert 1937-1938; Juedische Winterhilfe; Berlin Jewish Institutions

Caption: "Eroeffnung"

Heb. U. (Hebrew University) - Opening Ceremony

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Past-day recall of sedentary time: Validity of a self-reported measure of sedentary time in a university population

Background Sedentary behaviour is associated with several deleterious health consequences. Although device-based measures of sedentary time are available, they are costly and do not provide a measure of domain specific sedentary time. High quality self-report measures are necessary to accurately capture domain specific sedentary time, and to provide an alternative to devices when cost is an issue. In this study, the Past-day Adults’ Sedentary Time (PAST) questionnaire, previously shown to have acceptable validity and reliability in a sample of breast cancer survivors, was modified for a university sample and validity of the modified questionnaire was examined compared with activPAL. Methods Participants (n = 58, age = 18–55 years, 48% female, 66% students) were recruited from the University of Queensland (students and staff). They answered the PAST questionnaire, which asked about time spent sitting or lying down for work, study, travel, television viewing, leisure-time computer use, reading, eating, socialising and other purposes, during the previous day. Time reported for these questions was summed to provide a measure of total sedentary time. Participants also wore an activPAL device for the full day prior to completing the questionnaire and recorded their wake and sleep times in an activity log. Total waking sedentary time derived from the activPAL was used as the criterion measure. Correlation (Pearson's r) and agreement (Bland–Altman plots) between PAST and activPAL sedentary time were examined. Results Participants were sedentary (activPAL-determined) for approximately 66% of waking hours. The correlation between PAST and activPAL sedentary time for the whole sample was r = 0.50 [95% confidence interval (CI) = 0.28–0.67]; and higher for non-students (r = 0.63, 95% CI = 0.26–0.84) than students (r = 0.46, 95% CI = 0.16–0.68). Bland–Altman plots revealed that the mean difference between the two measures was 19 min although limits of agreement were wide (95% limits of agreement −4.1 to 4.7 h). Discussion The PAST questionnaire provides an acceptable measure of sedentary time in this population, which included students and adults with high workplace sitting. These findings support earlier research that questionnaires employing past-day recall of sedentary time provide a viable alternative to existing sedentary behaviour questionnaires.

Noncommutativity and Some of Its Present-Day Developments

This masters thesis explores some of the most recent developments in noncommutative quantum field theory. This old theme, first suggested by Heisenberg in the late 1940s, has had a renaissance during the last decade due to the firmly held belief that space-time becomes noncommutative at small distances and also due to the discovery that string theory in a background field gives rise to noncommutative field theory as an effective low energy limit. This has led to interesting attempts to create a noncommutative standard model, a noncommutative minimal supersymmetric standard model, noncommutative gravity theories etc. This thesis reviews themes and problems like those of UV/IR mixing, charge quantization, how to deal with the non-commutative symmetries, how to solve the Seiberg-Witten map, its connection to fluid mechanics and the problem of constructing general coordinate transformations to obtain a theory of noncommutative gravity. An emphasis has been put on presenting both the group theoretical results and the string theoretical ones, so that a comparison of the two can be made.

Role of orbital symmetry in transition metal promoted ring opening reactions of methylenecyclopropanes and cyclobutenes

Transition metals catalyse a variety of organic reactions, of which the ring opening of strained ring organic molecules generated a lot of interest. Theoreticians predicted a metal orbital catalysed pathway, which involved concerted bond breaking and bond forming. On the other hand experimentalists were able to show that the reaction was not proceeding through a concerted pathway by intercepting the intermediates involved. There remained, however, two ring systems methylenecyclopropanes and cyclobutenes—whose reactions with metal complexes seemed to be of a concerted nature. An analysis of the reactions of different metal complexes with these ring systems and the theoretical predictions provide a rationale for understanding these reactions.

AE energy release during the fracture of HSC beams

An attempt has been made experimentally to investigate the acoustic emission (AE) energy release in high-strength concrete (HSC) beams subjected to monotonically increasing load. Acoustic emission energy release during the fracture process of the HSC beams is measured. Stress waves released during the fracture process in materials cause acoustic emissions. AE energy released during the fracture of a notched three-point bend plain concrete beam specimens having 28-day compressive strengths of 50.0 MPa, 69.0 MPa and 78.0 MPa and mortar (cement: sand (1: 4) by weight) specimens are studied. Mortar consists of one part cement and four parts sand by weight. The specimens were tested by a material testing system of 1200 kN capacity employing crack mouth opening displacement control at the rate of 0.0004 mm/s. The fracture energy and the AE energy released during the fracture process of all the tested TPB and mortar specimens are compared and discussed. The observations made in the present experimental study have some applications for monitoring the integrity of structures.

Shalom Coin, Israel's 32nd Independence Day

Obverse: 200 Lirot silver coin, emblem of the State of Israel. Reverse: stylized lettering of the word 'peace' from olive branch's leaves.