The Blazhko behavior of RV UMa

RV UMa is one of the most extensively studied RR Lyrae stars showing Blazhko modulation. Its photometric observations cover more than 90 years. The published photoelectric observations of RV UMa obtained at the Konkoly Observatory (Kanyo, 1976) were re-considered and completed with previously unpublished data. During the time interval of the observations the periods of both the pulsation and the modulation varied within the ranges of 0.000007 and 0.9 days, respectively. We have found a definite but not strict inverse relation between the pulsation and modulation periods of RV UMa.Comment: 4 pages, 5 figures, accepted for publication in A

Spectroscopic and Photometric Study of the Contact Binary BO CVn

We present the results of the study of the contact binary system BO CVn. We have obtained physical parameters of the components based on combined analysis of new, multi-color light curves and spectroscopic mass ratio. This is the first time the latter has been determined for this object. We derived the contact configuration for the system with a very high filling factor of about 88 percent. We were able to reproduce the observed light curve, namely the flat bottom of the secondary minimum, only if a third light has been added into the list of free parameters. The resulting third light contribution is significant, about 20-24 percent, while the absolute parameters of components are: M1=1.16, M2=0.39, R1=1.62 and R2=1.00 (in solar units). The O-C diagram shows an upward parabola which, under the conservative mass transfer assumption, would correspond to a mass transfer rate of dM/dt = 6.3 \times 10-8M\odot/yr, matter being transferred from the less massive component to the more massive one. No cyclic, short-period variations have been found in the O-C diagram (but longer-term variations remain a possibility)Comment: 16 pages, 5 figures, 5 tables, accepted for publication by New Astronom

Acupuncture and sports medicine : effects and application perspectives

Vor dem Hintergrund der gestiegenen medizinischen und sozioökonomischen Relevanz von Akupunktur und Laserakupunktur werden im Rahmen der vorliegenden Arbeit Anwendungsfelder und Forschungsperspektiven in der präventiven und rehabilitativen Sportmedizin skizziert. Hierzu zählen insbesondere die Therapie von Sportverletzungen und Sportschäden, die Steigerung der körperlichen Leistungsfähigkeit, die Unterstützung und Förderung der Regeneration sowie die Vorbeugung von belastungsinduziertem Asthma. Aufbauend auf den aktuellen Forschungsstand werden eigene Originalarbeiten vorgestellt, die sich mit der Evaluation spezifischer Effekte der Akupunktur und Laserakupunktur befassen.Against the background of the increasing medical and socioeconomic importance of acupuncture and laser acupuncture, the present work aims at outlining scientific and practical applications in fields related to preventive and rehabilitative sports medicine. These include, in particular, the treatment of acute and chronic sports injuries, the enhancement of physical performance, the promotion of recovery, as well as the prevention of exercise-induced asthma. Based on current research, the author presents his original investigations dealing with specific effects of acupuncture and laser acupuncture

Short Cruise Report R/V ALKOR AL545

Kiel – Kiel (Germany) 18th - 29th September 202

Megaprojects, Gentrification, and Tourism. A Systematic Review on Intertwined Phenomena

Within the neoliberal context of today’s urbanism, a growing number of inner-city megaprojects aim to transform brownfield sites—accompanied by gentrification and tourism. However, there is no systematic review exploring the interplay between these phenomena. This paper aims to systemize the existing scientific contributions by means of a literature review. Using different databases, a total number of 797 scientific documents have been identified. After several screening steps, a final set of 66 studies was included in the review. I present an analysis from a quantitative and a qualitative perspective, exploring bibliometric aspects, concepts, methods, and relevant lines of discussion. The area studied is a relatively young and emerging field. Within the discussion, there is a strong dominance of countries located in the global north, with Spain, the UK, and the U.S. at the forefront. From a methodological point of view, qualitative and mixed methods are mostly applied. The discussion of megaprojects, gentrification, and tourism has an important descriptive focus, with main topics such as planning, justice, and motivations. There are considerable conceptual deficits, as one-quarter of the studies do not clearly explain their methods. Future research needs to find ways to enable knowledge transfer to planning practice

CRUISE REPORT MARINE FIELD COURSE 2013 BSc course Geophysics / Oceanography Module: GBPRA Cruise No. AL424

September 27 – October 4, 2013 Kiel– Aarhus (Denmark) – Frederikshavn (Denmark) – Kie

On the apsidal motion of BP Vulpeculae

BP Vulpeculae is a bright eclipsing binary system showing apsidal motion. It was found in an earlier study that it shows retrograde apsidal motion which contradicts theory. In this paper we present the first $BV$ light curve of the system and its light curve solution as well as seven new times of the minima from the years 1959-1963. This way we could expanded the baseline of the investigation to five decades. Based on this longer baseline we concluded that the apsidal motion is prograde agreeing with the theoretical expectations and its period is about 365 years and the determined internal structure constant is close to the theoretically expected one.Comment: accepted for New Astronomy; two figure

The constrained left and its adverse impact on losers of globalization

'Diese Studie analysiert Arbeitsmarktreformen in Deutschland und Irland, zwei Ländern, welche unterschiedliche politische und institutionelle Zwänge aufweisen. Untersucht wird, wie sich der gemeinsame Effekt des institutionellen Gefüges und der Regierungsideologie auf die Gestaltung der Arbeitsmarktpolitik auswirkt. Die Fallstudien zeigen, dass linke Regierungen in Ländern mit hohen institutionellen Zwängen mehr Kosten einsparen müssen, um sich die Unterstützung der Oppositionsparteien zu sichern. Damit die Regierung die Unterstützung der Gewerkschaften nicht verliert, wird bei der Gestaltung der Reform besonders auf die Bedürfnisse der Kernarbeitnehmerschaft Rücksicht genommen. Die bevorzugte Behandlung von 'Insidern' in Ländern mit hohen institutionellen Zwängen geschieht auf Kosten der Arbeitnehmer, welche nicht von einflussreichen Interessenorganisationen vertreten werden ('Outsider'). In Ländern, wo linke Regierungen bei Reformen nicht auf die Unterstützung der Opposition angewiesen sind, hat die Regierung die Möglichkeit, die verbliebenen Ressourcen auf unterschiedliche Segmente der Arbeitnehmerschaft zu verteilen.' (Autorenreferat)'This paper examines the political mechanisms of welfare state policymaking in two countries with differing levels of institutional and political constraints, Germany and Ireland. The study analyzes the joint impact of political constraints and varying party governments on different dimensions of labor market policymaking. It comes to the conclusion that left-wing governments must cut spending more to accommodate the conservative opposition and gain its support when political and institutional constraints are high. To simultaneously ensure the support from pivotal extra-parliamentary actors, namely labor unions that are closely linked to the governing party, the left has to further compensate the unions' prime constituency, which is the well-integrated core workforce. The privileged treatment of labor market 'insiders' by left-wing governments in countries with high political constraints comes at the expenses of labor market 'outsiders'. Left-wing party governments in countries where political constraints are low are better able to address the needs of broader segments of society.' (author's abstract)

WZ Cygni: a Marginal Contact Binary in a Triple System?

We present new multiband CCD photometry for WZ Cyg made on 22 nights in two observing seasons of 2007 and 2008. Our light-curve synthesis indicates that the system is in poor thermal contact with a fill-out factor of 4.8% and a temperature difference of 1447 K. Including our 40 timing measurements, a total of 371 times of minimum light spanning more than 112 yr were used for a period study. Detailed analysis of the $O$--$C$ diagram showed that the orbital period has varied by a combination with an upward parabola and a sinusoid. The upward parabola means the continuous period increase and indicates that some stellar masses are thermally transferred from the less to the more massive primary star at a rate of about 5.80$\times10^{-8}$ M$_\odot$ yr$^{-1}$. The sinusoidal variation with a period of 47.9 yr and a semi-amplitude of 0.008 d can be interpreted most likely as the light-travel-time effect due to the existence of a low-mass M-type tertiary companion with a projected mass of $M_3 \sin i_3$=0.26 M$_\odot$. We examined the evolutionary status of WZ Cyg from the absolute dimensions of the eclipsing pair. It belongs to the marginal contact binary systems before broken-contact phase, consisting of a massive primary star with spectral type of F4 and a secondary with the type K1.Comment: 20 pages, including 3 figures and 6 tables, accepted for publication in A