Chung and Cox (1994) provided an intuitively appealing stochastic model which indicates that superstars may exist regardless of talent and which gives rise to the Yule distribution. We adopt a different empirical approach and test its goodness-of-fit using a parametric bootstrap and several powerful test statistics. Just like the discrete Pareto distribution, it is overwhelmingly rejected: it i...

Process optimization is one of the most important activities in todays competitive industries. the rather high cost of research and development has necessitated the development of experimental methods by which the factors affecting processes could be determined with minimum number of experiments. Over the last two decades, various types of experimental designs have been used. Among the differe...

Recent observations of GN-z11 with JWST/NIRSpec revealed numerous oxygen, carbon, nitrogen, and helium emission lines at $z=10.6$. Using the measured line fluxes, we derive abundance ratios individual elements within interstellar medium (ISM) this super-luminous galaxy. Driven by unusually-bright NIII] $\lambda$1750 NIV] $\lambda$1486 (and comparison faint OIII] $\lambda\lambda$1660, 1666 lines...

ABSTRACT The Weizmann Fast Astronomical Survey Telescope is a 55 cm optical survey telescope with high-cadence (25 Hz) monitoring of the sky over wide field view (?7 deg2). high frame rate allows detection sub-second transients multiple images. We present sample ?0.1–0.3 s duration flares detected in an untargeted for such transients. show that most, if not all them, are glints sunlight reflect...

The James Webb Space Telescope (JWST) discovered several luminous high-redshift galaxy candidates with stellar masses of $M_{*} \gtrsim 10^{9} \, \rm{M_{\odot}}$ at photometric redshifts $z_{\mathrm{phot}} 10$ which allows to constrain and structure formation models. For example, Adams et al. identified the candidate ID 1514 $\log_{10}(M_{*}/M_{\odot}) = {9.8}_{-0.2}^{+0.2}$ located 9.85_{-0.12...

cinema industry is one of the main elements of cultural development. development of cinema industry requires the identifying the various social, economic and cultural dimensions. this paper studies the economic characteristics of cinema in iran. in this regard, it is necessary to identify the determinants of demand for movies and their demand elasticities. the computed elasticities have useful ...

due to increasing number of international tourists and the enhancing role of tourism in economies of countries and competing environment, recognizing determinants in attracting international tourists seems very essential than ever before. public and private sectors need to examine determinants and forecast tourism demand. the primary aim of this study is using econometric techniques to analyzin...