Performance of the Birmingham Solar-Oscillations Network (BiSON)

The Birmingham Solar-Oscillations Network (BiSON) has been operating with a full complement of six stations since 1992. Over 20 years later, we look back on the network history. The meta-data from the sites have been analysed to assess performance in terms of site insolation, with a brief look at the challenges that have been encountered over the years. We explain how the international community can gain easy access to the ever-growing dataset produced by the network, and finally look to the future of the network and the potential impact of nearly 25 years of technology miniaturisation.Comment: 31 pages, 19 figures. Accepted by Solar Physics: 2015 October 20. First online: 2015 December 7. Open Acces

Latest Results from the Heidelberg-Moscow Double Beta Decay Experiment

New results for the double beta decay of 76Ge are presented. They are extracted from Data obtained with the HEIDELBERG-MOSCOW, which operates five enriched 76Ge detectors in an extreme low-level environment in the GRAN SASSO. The two neutrino accompanied double beta decay is evaluated for the first time for all five detectors with a statistical significance of 47.7 kg y resulting in a half life of (T_(1/2))^(2nu) = [1.55 +- 0.01 (stat) (+0.19) (-0.15) (syst)] x 10^(21) years. The lower limit on the half-life of the 0nu beta-beta decay obtained with pulse shape analysis is (T_(1/2))^(0_nu) > 1.9 x 10^(25) [3.1 x 10^(25)] years with 90% C.L. (68% C.L.) (with 35.5 kg y). This results in an upper limit of the effective Majorana neutrino mass of 0.35 eV (0.27 eV). No evidence for a Majoron emitting decay mode or for the neutrinoless mode is observed.Comment: 14 pages, revtex, 6 figures, Talk was presented at third International Conference ' Dark Matter in Astro and Particle Physics' - DARK2000, to be publ. in Proc. of DARK2000, Springer (2000). Please look into our HEIDELBERG Non-Accelerator Particle Physics group home page: http://www.mpi-hd.mpg.de/non_acc

X-ray spectral variability of Seyfert 2 galaxies

Variability across the electromagnetic spectrum is a property of AGN that can help constraining the physical properties of these galaxies. This is the third of a serie of papers with the aim of studying the X-ray variability of different families of AGN. The main purpose of this work is to investigate the variability pattern in a sample of optically selected type 2 Seyfert galaxies. We use the 26 Seyferts in the Veron-Cetty and Veron catalogue with data available from Chandra and/or XMM-Newton public archives at different epochs, with timescales ranging from a few hours to years. All the spectra of the same source are simultaneously fitted and we let different parameters to vary in the model. Whenever possible, short-term variations and/or long-term UV flux variations are studied. We divide the sample in Compton-thick, Compton-thin, and changing-look candidates. Short-term variability at X-rays is not found. From the 25 analyzed sources, 11 show long-term variations; eight (out of 11) are Compton-thin, one (out of 12) is Compton-thick, and the two changing-look candidates are also variable. The main driver for the X-ray changes is related to the nuclear power (nine cases), while variations at soft energies or related with absorbers at hard X-rays are less common, and in many cases these variations are accompained with variations of the nuclear continuum. At UV frequencies nuclear variations are nor found. We report for the first time two changing-look candidates, MARK273 and NGC7319. A constant reflection component located far away from the nucleus plus a variable nuclear continuum are able to explain most of our results; the Compton-thick candidates are dominated by reflection, which supresses their continuum making them seem fainter, and not showing variations, while the Compton-thin and changing-look candidates show variations.Comment: Accepted for publication in A&

Performance of the Birmingham Solar-Oscillations Network (BiSON)

The Birmingham Solar-Oscillations Network (BiSON) has been operating with a full complement of six stations since 1992. Almost 25 years later, we look back on the network history. The meta-data from the sites have been analysed to assess performance in terms of site insolation, with a brief look at the challenges that have been encountered over the years. We discuss how to access the ever-growing dataset produced by the network, and finally look to the future of the network and the potential impact of 25 years of technology miniaturisation

Employment protection legislation and job stability: an European cross country analysis

This paper tries to shed some light on the actual changes that occurred in the labour markets dynamics of the European Union 253 (EU-25) over the last decade using job tenure4 data. It then investigates the potential role of employment protection legislation (EPL)5 changes in explaining differences in the dynamics of job stability across countries but also across age groups in light of the dual-track reform strategy introduced in Europe during the same period: in most European countries, reforms were made typically at the margin (for new hires), while EPL for the incumbent workers remained unchanged. Thus, if the legislation does not apply uniformly to all workers, the effects of EPL reforms are expected to be disproportionately felt by new entrants, such as the young, women, and possibly immigrants.The paper opens with a descriptive analysis of job stability measured through job tenure in the EU-25, and its evolution over the last years. The level and structure by age of this indicator is our main empirical material. Data used comes from Labour Force Surveys (EUROSTAT) up to 2006. The analysis shows no generalized decrease in job tenure but a trend towards shorter tenure of young workers (15-24) in most European countries. In a second step, the paper examines the possible explanations behind this trend, focusing on employment protection legislation. An econometric analysis is conducted to test the existence of a link between employment protection and job stability. In particular, we look at the impact of employment protection on average tenure and on the incidence of temporary employment. Finally, some policy recommendations are provided

Employment protection legislation and job stability: an European cross country analysis

This paper tries to shed some light on the actual changes that occurred in the labour markets dynamics of the European Union 253 (EU-25) over the last decade using job tenure4 data. It then investigates the potential role of employment protection legislation (EPL)5 changes in explaining differences in the dynamics of job stability across countries but also across age groups in light of the dual-track reform strategy introduced in Europe during the same period: in most European countries, reforms were made typically at the margin (for new hires), while EPL for the incumbent workers remained unchanged. Thus, if the legislation does not apply uniformly to all workers, the effects of EPL reforms are expected to be disproportionately felt by new entrants, such as the young, women, and possibly immigrants. The paper opens with a descriptive analysis of job stability measured through job tenure in the EU-25, and its evolution over the last years. The level and structure by age of this indicator is our main empirical material. Data used comes from Labour Force Surveys (EUROSTAT) up to 2006. The analysis shows no generalized decrease in job tenure but a trend towards shorter tenure of young workers (15-24) in most European countries. In a second step, the paper examines the possible explanations behind this trend, focusing on employment protection legislation. An econometric analysis is conducted to test the existence of a link between employment protection and job stability. In particular, we look at the impact of employment protection on average tenure and on the incidence of temporary employment. Finally, some policy recommendations are provided.

Inequality of happiness in nations

The first comparison of happiness in nations took place in 1948 and involved 9 countries (Buchanan, 1953). A second comparative study in 1960 covered 14 nations (Cantril 1965) and this was followed by a global survey in 1975 carried out by Gallup (1976), in which happiness in all parts of the world was assessed. Today we have comparable data on happiness in 90 nations and for a dozen nations we also have time series of 40 to 25 years (Veenhoven 2004). These data provide the fuel for a rising number of publications on happiness in nations. Currently, the Bibliography of Happiness counts some 400 entries on this subject, 20% of which have been published over the last 5 years. To date, all the studies have been focused on the level of happiness in nations, that is, on how happy citizens are in a country. In this special issue we look at the same data from a different perspective and focus on difference in happiness in nations, that is, on the degree of divergence with regard to happiness found among citizens in a particular country

IFCN Cash Crop: Benchmarking Farms Globally Oilseed Production Costs

Vegetable oil production has become one of the fastest expanding cash crop sectors in the last 50 years and it is still increasing rapidly. However the regions of expansion, the sources of plant oil and their importance vary over time. To shed light on this development it is necessary to look at the farm level production systems and their production costs for a variety of countries and oilseeds. In this paper we present the first results of the IFCN Cash Crop Network covering the international comparison of oilseed producing farms. A total of 25 farms with oilseed production have been analysed in compiling this paper. All farms produce at least one of the following oilseeds: soybeans, oilseed rape, sunflower and (two farms) mustard. The farms are located in 14 different countries/regions and represent typical oilseed producing farms in their region/country. The farm data was collected and compiled in all countries and regions by IFCN Partners according to IFCN standards to en-sure its international comparability. The most competitive farms in oilseed production worldwide can be found in South America. The farms in Ukraine also have great potential. At the moment the farms in Argentina show the highest profit margins. The farms from North America can also cover their full costs with the prices they receive for soybeans, sunflower and rape seed.Farm comparisons, Cash Crop production, International competitiveness, International Farm Comparison Network, Oilseed, Benchmarking, Crop Production/Industries,

Relationship of cognitive function in patients with schizophrenia in remission to disability: a cross-sectional study in an Indian sample

Background: Cognitive deficits in various domains have been consistently replicated in patients with schizophrenia. Most studies looking at the relationship between cognitive dysfunction and functional disability are from developed countries. Studies from developing countries are few. The purpose of the present study was to compare the neurocognitive function in patients with schizophrenia who were in remission with that of normal controls and to determine if there is a relationship between measures of cognition and functional disability. <p/>Methods: This study was conducted in the Psychiatric Unit of a General Hospital in Mumbai, India. Cognitive function in 25 patients with schizophrenia in remission was compared to 25 normal controls. Remission was confirmed using the brief psychiatric rating scale (BPRS) and scale for the assessment of negative symptoms (SANS). Subjects were administered a battery of cognitive tests covering aspects of memory, executive function and attention. The results obtained were compared between the groups. Correlation analysis was used to look for relationship between illness factors, cognitive function and disability measured using the Indian disability evaluation and assessment scale. <p/>Results: Patients with schizophrenia showed significant deficits on tests of attention, concentration, verbal and visual memory and tests of frontal lobe/executive function. They fared worse on almost all the tests administered compared to normal controls. No relationship was found between age, duration of illness, number of years of education and cognitive function. In addition, we did not find a statistically significant relationship between cognitive function and scores on the disability scale. <p/>Conclusion: The data suggests that persistent cognitive deficits are seen in patients with schizophrenia under remission. The cognitive deficits were not associated with symptomatology and functional disability. It is possible that various factors such as employment and family support reduce disability due to schizophrenia in developing countries like India. Further studies from developing countries are required to explore the relationship between cognitive deficits, functional outcome and the role of socio-cultural variables as protective factors