SHOULD WE DIFFERENTIATE BETWEEN BUSINESS AND PRIVATE CUSTOMERS?

The literature on how customers make their service-provider choices largely distinguishes between private and business customers, and companies’ offerings have been separated accordingly. This study takes a closer look at the possible differences between these two customer categories. The results are explorative and based on both qualitative and quantitative studies focusing on customers’ actual behavior. The findings show that it is not only job-related aspects such as “being able to work” that influence business travel, and that private matters such as “time with the family” are clearly of equal significance in the choice situation. Price perception is important, but only when it is set against the appropriate social costs. The contradiction appears in the airlines’ offers to these customers, which are generally specifically job related. The results of the present study show that most business customers are, in fact, “private customers”.air travel, customer relationships, business-to-business relationships, preferences, choice, service

Scientific Journal Publishing – Yearly Volume and Open Access Availability

Introduction. We estimate the total yearly volume of peer-reviewed scientific journal articles published world-wide as well as the share of these articles available openly on the Web either directly or as copies in e-print repositories. Method. We rely on data from two commercial databases (ISI and Ulrich's Periodicals Directory) supplemented by sampling and Google searches. Analysis. A central issue is the finding that ISI-indexed journals publish far more articles per year (111) than non ISI-indexed journals (26), which means that the total figure we obtain is much lower than many earlier estimates. Our method of analysing the number of repository copies (green open access) differs from several earlier studies which have studied the number of copies in identified repositories, since we start from a random sample of articles and then test if copies can be found by a Web search engine. Results. We estimate that in 2006 the total number of articles published was approximately 1,350,000. Of this number 4.6% became immediately openly available and an additional 3.5% after an embargo period of, typically, one year. Furthermore, usable copies of 11.3% could be found in subject-specific or institutional repositories or on the home pages of the authors. Conclusions. We believe our results are the most reliable so far published and, therefore, should be useful in the on-going debate about Open Access among both academics and science policy makers. The method is replicable and also lends itself to longitudinal studies in the future

Empirical modeling of the stellar spectrum of galaxies

An empirical method of modeling the stellar spectrum of galaxies is proposed, based on two successive applications of Principal Component Analysis (PCA). PCA is first applied to the newly available stellar library STELIB, supplemented by the J, H and K$_{s}$ magnitudes taken mainly from the 2 Micron All Sky Survey (2MASS). Next the resultant eigen-spectra are used to fit the observed spectra of a sample of 1016 galaxies selected from the Sloan Digital Sky Survey Data Release One (SDSS DR1). PCA is again applied, to the fitted spectra to construct the eigen-spectra of galaxies with zero velocity dispersion. The first 9 galactic eigen-spectra so obtained are then used to model the stellar spectrum of the galaxies in SDSS DR1, and synchronously to estimate the stellar velocity dispersion, the spectral type, the near-infrared SED, and the average reddening. Extensive tests show that the spectra of different type galaxies can be modeled quite accurately using these eigen-spectra. The method can yield stellar velocity dispersion with accuracies better than 10%, for the spectra of typical S/N ratios in SDSS DR1.Comment: 34 pages with 18 figures, submitted to A

Observational Evidence of Accretion Disk-Caused Jet Precession in Galactic Nuclei

We show that the observational data of extragalactic radio sources tend to support the theoretical relationship between the jet precession period and the optical luminosity of the sources, as predicted by the model in which an accretion disk causes the central black hole to precess.Comment: 13 pages, 1 figure, accepted for publication in ApJ Letter

Avoidable mortality among parents whose children were placed in care in Sweden: A retrospective matched cohort study

Introduction Separation from one’s child can have significant consequences for parental health and well-being. Objectives and Approach We aimed to investigate whether parents whose children were placed in care had higher rates of avoidable (amenable and preventable) mortality. Data were obtained from the Swedish national registers. Mortality rates among parents whose children were placed in care between 1990 and 2012 (17 505 mothers, 18 286 fathers) were compared with a 5:1 matched cohort of parents whose children were not placed. We computed rate differences and hazard ratios of all-cause and avoidable mortality. Results When compared with parents who did not have a child placed in care, there were an additional 21 avoidable deaths per 10 000-person years among mothers and an additional 27 avoidable deaths per 10 000-person years among fathers whose children were placed in care. Among mothers, death due to preventable causes were 3·83 times greater (95% CI 2·82-5·21) and deaths due to amenable causes were 3·12 times greater (95% CI 2·07-4·69) for those whose children were placed in care. Among fathers, death due to preventable causes was 1·75 times greater (95% CI 1·41-2·16) and deaths due to amenable causes were 1·52 times greater (95% CI 1·08- 2·13) for those whose children were placed in care. Avoidable mortality rates were higher among mothers whose children were young when placed in care and parents whose children were all placed in care. Conclusion/Implications Mothers who had a young child placed and parents whose children were all placed in care are at much higher risk of avoidable mortality than parents whose children were not placed in care. Targeted public health interventions and more attentive health care could reduce risk of avoidable mortality in this group of parents

Resolution of the type material of the Asian elephant, Elephas maximus Linnaeus, 1758 (Proboscidea, Elephantidae)

The understanding of Earth’s biodiversity depends critically on the accurate identification and nomenclature of species. Many species were described centuries ago, and in a surprising number of cases their nomenclature or type material remain unclear or inconsistent. A prime example is provided by Elephas maximus, one of the most iconic and well-known mammalian species, described and named by Linnaeus (1758) and today designating the Asian elephant. We used morphological, ancient DNA (aDNA), and high-throughput ancient proteomic analyses to demonstrate that a widely discussed syntype specimen of E. maximus, a complete foetus preserved in ethanol, is actually an African elephant, genus Loxodonta. We further discovered that an additional E. maximus syntype, mentioned in a description by John Ray (1693) cited by Linnaeus, has been preserved as an almost complete skeleton at the Natural History Museum of the University of Florence. Having confirmed its identity as an Asian elephant through both morphological and ancient DNA analyses, we designate this specimen as the lectotype of E. maximus

Recent advances in electronic structure theory and their influence on the accuracy of ab initio potential energy surfaces

Recent advances in electronic structure theory and the availability of high speed vector processors have substantially increased the accuracy of ab initio potential energy surfaces. The recently developed atomic natural orbital approach for basis set contraction has reduced both the basis set incompleteness and superposition errors in molecular calculations. Furthermore, full CI calculations can often be used to calibrate a CASSCF/MRCI approach that quantitatively accounts for the valence correlation energy. These computational advances also provide a vehicle for systematically improving the calculations and for estimating the residual error in the calculations. Calculations on selected diatomic and triatomic systems will be used to illustrate the accuracy that currently can be achieved for molecular systems. In particular, the F+H2 yields HF+H potential energy hypersurface is used to illustrate the impact of these computational advances on the calculation of potential energy surfaces