1,157 research outputs found
Applied algebra and number theory: essays in honour of Harald Niederreiter on the occasion of his 70th birthday
No full text"Harald Niederreiter's pioneering research in the field of applied algebra and number theory has led to important and substantial breakthroughs in many areas, including finite fields and their application areas as coding theory and cryptography as well as uniform distribution and quasi-Monte Carlo methods. He is author of more than 350 research papers and 10 books"-
2. Networks, states and empires in the Baltic Region
No full textMain author Kristian Gerner. Harald Runblom author of boxes on The Vikings and The Hansa.</p
Harald Sigurdsson and the Russo-Byzantine War of 1043
Full text linkThe present article analyzes Kekaumenos’ commentary on the service of Harald Sigurdsson in the Byzantine army. Special attention is given to the composition of Consilia et Narrationes and the historiographic perception of this text. It then discusses Kekaumenos’ commentary in light of Harald’s adventures in the Haralds saga Siguðarsonar and the story about the attacks of Rus’ in the Byzantine literature. The author attempts to show that Constantine IX Monomachos tried to leave the large groups of mercenaries in Constantinople. Furthermore, the emperor’s attitude to Harald and his warriors was related to the events of Russo-Byzantine war in 1043. Constantine IX Monomachos dispersed these mercenaries into the themes. John Scylitzes wrote that the emperor put a guard over them to prevent them from inciting a rebellion. These arrests could explain Harald’s mysterious detention in the reign of Constantine IX Monomachos. It is possible to conclude that Harald’s detention was caused by the Russo-Byzantine war in 1043
The fundamental constants: a mystery of physics
No full textThe speed of light, the fine structure constant, and Newton's constant of gravity — these are just three among the many physical constants that define our picture of the world. Where do they come from? Are they constant in time and across space? In this book, physicist and author Harald Fritzsch invites the reader to explore the mystery of the fundamental constants of physics in the company of Isaac Newton, Albert Einstein, and a modern-day physicis
Von der Sorge und Sorglosigkeit : zu Gemeinsamkeiten von Pflege und Tourismus
No full textDieser Beitrag zum Denkanstoß 17 „Zukunft der Pflege“ ergänzt die Beiträge des Denkanstoßes um weitere Aspekte, die nicht in dem Heft berücksichtigt werden konnten. Harald Pechlaner, Giulia Isetti und Michael de Rachewitz erläutern in ihrem Beitrag die Gemeinsamkeiten zwischen den Konzepten von Gastfreundschaft und Pflege (cura)
Menyikapi Keontentikan Hadis Dalam Perspektif Harald Motzki (Studi Isnad Cum Matan Harald Motzki): Id
No full textCurrently, it is still being debated by orientalists about the truth of hadith as a source of Islamic history that is no longer authentically derived from the prophet, as well as the views and thoughts of orientalists in studying hadith such as Ignaz Goldziher and Joseph Schacht which had a great influence on western scientists. The purpose of this study is to repeat the hadith criticism that has been tested by classical hadith scholars that most of the hadiths are not fake as some orientalists understand, the method used is the descriptive analysis of isnad cum matn, in this study the author conducted research by contemporary orientalist Harald Motdzi who broke the previous orientalist hadith critique by proving that from the historical sanad and matn hadith in the book of Musannaf Abd Razaq as-San\u27ani, this study proves that most of the traditions that are sources of law and history are authentic from the Prophet
Are adrenaline autoinjectors fit for purpose? A pilot study of the mechanical and injection performance characteristics of a cartridge- versus a syringe-based autoinjector
No full textAndreas Schwirtz, Harald SeegerPharma Consult GmbH, Vienna, AustriaBackground: Adrenaline autoinjectors (AAIs) are prescribed to facilitate the intramuscular administration of adrenaline in patients diagnosed with life-threatening anaphylaxis. This pilot study investigated the injection and functional properties of two AAIs (deploying different delivery systems) under standard conditions, after dynamic and mechanical stresses, and in the presence of denim.Methods: The differences between a cartridge-based AAI (EpiPen&reg; Junior) and a syringe-based AAI (Anapen&reg; Junior) were assessed using three sets of tests. Test 1: under standard conditions, the injection depth and dose were measured in ballistic gelatine (a validated tissue simulant). Test 2: before the safety cap removal and activation forces were measured, AAIs were subjected to either of two preconditioning tests: 1) free-fall drop test; or 2) static load (ie, 400 N, equivalent to 40 kg weight) test; or 3) no preconditioning. Test 3: under standard conditions, injection properties into ballistic gelatine in the presence and absence of denim were investigated. Statistical analyses were performed using the Student&rsquo;s t-test or Welch&rsquo;s test.Results: The maximum depth of delivery was significantly greater with cartridge AAI (n = 4, mean 21.09 &plusmn; 2.54 mm) than with syringe AAI (n = 5; mean 11.64 &plusmn; 0.80 mm; P = 0.003). After 2.5 seconds, cartridge AAI (n = 4) discharged significantly more dose than syringe AAI (n = 3; 74.3% versus 25.7% of total dose; P = 0.001). Both cartridge and syringe AAI withstood the free-fall drop test, but almost all devices failed to activate following the static load test. Under standard conditions, significantly less force was required to remove the safety cap of cartridge AAI than syringe AAI (both n = 15; mean 9.56 &plusmn; 2.36 N versus 20.23 &plusmn; 6.61 N, respectively; P &lt; 0.001), but a significantly greater activation force was required for cartridge AAI than syringe AAI (mean 23.01 &plusmn; 3.96 N versus 8.06 &plusmn; 0.51 N, respectively; P &lt; 0.001). The presence of denim did not alter the activation force or effective needle length of either of the AAIs.Conclusion: Cartridge AAI appears significantly more capable of consistently and rapidly delivering a clinically relevant dose of intramuscular adrenaline than syringe AAI. However, both devices showed shortcomings in their ability to sustain mechanical stress similar to that which is likely over their shelf life, and as such, may not be fit for life-saving purpose.Keywords: anaphylaxis, intramuscular, delivery system, devic
Measurement of particle emission during brake dynamometer tests
No full textAerosol emissions from brake pads are evolving into the focus of industrie and regulation. Many institutes are extending their dynamometer test stands with aerosol measurement equipement. While this is in general a good developement, the details of aerosol measurement and the special problems in the case of brake pad emissions need some special attention. The instrumentation can not be used out of the box and the important parameters will be highlighted in this presentation
Knowledge and time
No full textThis is a unique volume by a unique scientist, which combines conceptual, formal, and engineering approaches in a way that is rarely seen. Its core is the relation between ways of learning and knowing on the one hand and different modes of time on the other. Partial Boolean logic and the associated notion of complementarity are used to express this relation, and mathematical tools of fundamental physics are used to formalize it. Along the way many central philosophical problems are touched and addressed, above all the mind-body problem. Completed only shortly before the death of the author, the text has been edited and annotated by the author's close collaborator Harald Atmanspacher
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