Influence of Josephson current second harmonic on stability of magnetic flux in long junctions

We study the long Josephson junction (LJJ) model which takes into account the second harmonic of the Fourier expansion of Josephson current. The dependence of the static magnetic flux distributions on parameters of the model are investigated numerically. Stability of the static solutions is checked by the sign of the smallest eigenvalue of the associated Sturm-Liouville problem. New solutions which do not exist in the traditional model, have been found. Investigation of the influence of second harmonic on the stability of magnetic flux distributions for main solutions is performed.Comment: 4 pages, 6 figures, to be published in Proc. of Dubna-Nano2010, July 5-10, 2010, Russi

Metaplan Als Eine Moderationsmethode

Man kann besser lernen, wenn man sich aktivGedanken uber das Lernen und die Lernprozesse macht und spater seine eigenen Lernstrategien entwickelt. Dabei ist das Prinzip „Lernen durch Handeln“ sehr wichtig

TREATMENT OF PEPTIC ULCER DISEASE PATIENTS WITH THE APPARATUS "ELEKTRONIKA-EHF"

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Power Intensification of Swelling Process

DergiPark: 245958trakyafbdMakale, boru şekilli bir parçanın şişirilmesinde ilave eksenel basınç uygulayarak güç yoğunlaştırmanın etkilerini araştırmak üzere yürütülen çalışmaların sonuçlarını özetlemektedir. Eksenel basıncın arttırılması, ?? gerilme indeksini ve gerilme halinin rijitliğini azaltarak şekil değiştirme bölgesindeki malzemenin düzgün akışını sağlamaktadır. Bu yöntemle düşük karbonlu çelik parçalar için, şişirme indeksinde % 15 civarında bir düşüş ve şekillendirilebilirlikte % 76 ile % 78 arasında bir artış elde edilmektedir.The paper deals with the outcomes of investigations carried out to determine the impact of power intensification of a deformation process by means of applying additional axial pressure over the fronts of round billets. By increasing axial pressure, the value of ?? index and the “rigidity” of the stressed state pattern drops down that promote redistribution of metal within the area of deformation. This resulted in 15% decrease of the index of swelling and 76 to 78% increase of the permissible level of swelling during deformation of low carbon steel specimen

SHIFT-WORK DYNAMICS OF SOME PARAMETERS OF FATIGUE AND WORKING CAPACITY IN AIR-TRAFFIC CONTROLLERS

The purpose of the present work was to study the changes of some psychophysiological parameters in air-traffic controllers under the influence of the working process and occupational environment. Some 28 air-traffic controllers at a mean age of 34,9 years and mean length of service of 11,8 уears were examined. A dynamic following-up the changes of psychic working capacity according to the shift-work regimen - at the beginning and at the end of the morning, afternoon and night shifts was performed. Fatigue and neuro-emotional stress underwent a subjective evaluation. Objectively, the following parameters were examined: attention properties, speed and preciseness of the visual-motor reaction, movement coordination, static tremor, and rate of hand movements. The labour of the air-trafic controllers was characterized by a high intensity and was related with heavy resposibility and permanent stress situations as well. A significant subjective reduction of the working capacity along with an enhanced voluntary effort at the end of the working shifts was established. The subjective scores were lower during the night shift than those during the day shift. The changes of the attention parameters such as productivity, volume and rate of processed information during the night shift appeared to be particularly indicative when the objective examinations were concerned