Impact of Microwaves on the Electron Cloud and Incoherent Effects

We consider the use of microwaves for manipulating the electron cloud, describing an exploratory experiment at PEP-II as well as computer simulations of the electron cloud build-up in the presence of a microwave for an LHC dipole. We then show that the incoherent effects of the electron cloud - energy loss and transverse emittance growth due to scattering of the electrons - are negligible. This suggests that the disturbance of the coherent motion may be another possible application of microwaves, which could prevent beam emittance growth and beam loss

Product assurance policies and procedures for flight dynamics software development

The product assurance policies and procedures necessary to support flight dynamics software development projects for Goddard Space Flight Center are presented. The quality assurance and configuration management methods and tools for each phase of the software development life cycles are described, from requirements analysis through acceptance testing; maintenance and operation are not addressed

Was läuft falsch in der Debatte um "mehr direkte Demokratie"?

"Anders als die territoriale Herrschaftsgliederung, die Verfassungsgerichtsbarkeit oder das Wahlsystem gehören direktdemokratische Verfahren nicht zu den zwingend notwendigen, sondern zu den 'optionalen' Einrichtungen eines demokratischen Regierungssystems. Wer sie neu einführen will, muss deshalb den Nachweis führen, dass sie in das System hineinpassen und ihnen ein demokratischer Mehrwert innewohnt. Letzteres setzt voraus, dass die Plebiszite nicht nur eine symbolische Funktion erfüllen; sie müssen tatsächlich politische Wirkung entfalten. Handelt es sich bei der Direktdemokratie um ein in der Praxis nicht einlösbares Versprechen an die Bürger, wäre es ehrlicher und damit auch unter Legitimationsaspekten besser, auf ihre Einführung zu verzichten." (Autorenreferat

Über das Scheitern des neuen Rechtspopulismus in Deutschland: Republikaner, Statt-Partei und der Bund Freier Bürger

'Im Unterschied zu anderen westeuropäischen Ländern sind den rechtspopulistischen Parteien in der Bundesrepublik Deutschland größere Wahlerfolge bislang versagt geblieben. Um diesem Phänomen auf den Grund zu gehen, werden im Folgenden zwei einander ergänzende Erklärungen angeboten. Einerseits lässt sich das Scheitern auf die feindliche Umgebung zurückführen, mit der jegliche Form von Populismus in Deutschland konfrontiert wird; andererseits hängt es mit dem Unvermögen der rechtspopulistischen Akteure zusammen, sich als parteipolitische Kraft zu etablieren. Anders als in Frankreich oder Österreich, wo es den Rechtsaußenparteien Front National und FPÖ gelungen ist, verschiedene Stränge des Rechtspopulismus in einer gemeinsamen Organisation zusammenzuführen, laufen diese Stränge in der Bundesrepublik in Gestalt verschiedener Gruppen nebeneinander, wodurch das rechtsextreme Wählerpotenzial gespalten wird. Drei der gescheiterten Parteien werden hier eingehender betrachtet: die Republikaner, die Hamburger Statt-Partei und der Bund Freier Bürger.' (Autorenreferat)'Contrary to other West European countries, right-wing populist parties have had mixed and rather modest success in Germany. The purpose of the article is to trace the reasons for this. Two complementary explanations are suggested: On the one hand, failure can be blamed on the hostile environment which every form of populism must expect in Germany. On the other hand, it is attributable to the particular inability of the new parties to establish themselves as a political force. While the French Front National and the Austrian FPÖ have successfully channeled various strands of populist protest into a common party, these strands have produced several different groups in the Federal Republic, thus splitting the right-wing electorate. Three of them are under consideration here: the Republicans, the Hamburg Statt-Partei and the Bund Freier Bürger.' (author's abstract

Incidence of drouth conditions in southeastern Missouri

Missouri Agricultural Experiment Station and Farm Production Economics Division, Economic Research Service, United States Department of Agriculture, cooperating.Digitized 2007 AES.Includes bibliographical references (pages 34-35)

Comparison of H2O2 screen-printed sensors with different Prussian blue nanoparticles as electrode material

In order to determine hydrogen peroxide condensing from gaseous and liquid phases screen-printed electrodes with controlled and adjustable thickness, shape and size of the working electrode as well as electrode paste composition were investigated. For this purpose Prussian blue (PB) nanoparticles with a different particle size distribution of 20- 30 nm (synthesized) and 60-100 nm (commercially available) were mixed with carbon paste and screen-printed on Al2O3 templates to establish H2O2-sensitive electrode. These two types of screen-printed sensors were compared to the commercial one during measurements in H2O2/water solutions at concentrations between 10-5 and 10-2 M H2O2. The linear signal in the investigated concentration range was found only for the sensor with the commercially available PB particles. Thus, this sensor prepared with PB particles of the size 60-100 nm showed the most reproducible and time-stable response versus the analyte in comparison to the others. This result offers the possibility to create sensors with adjustable design adapted to the concrete functionality. Thin films of collecting electrolytes based on agarose gels were printed on the sensor structures. They showed a distinct response on the application of H2O2-containing aerosols and gaseous phase