We study a continuum model for epitaxial growth of thin films in which the slope of mound structure of film surface increases. This model is a diffusion equation for the surface height profile h which is assumed to satisfy the periodic boundary condition. The equation happens to possess a Lyapunov or “free energy” functional. This functional consists of the term |∆h|2 that represents the surfac...

Streamflow is an important factor in the study of water resource management, floods, and droughts. Dramatic climate change has created extreme rainfall distributions, making the study of streamflow trends and variability even more crucial. In this study, the long-term streamflow data and trends recorded at gauging stations in Northern Taiwan are analyzed using the Mann-Kendall test. The data us...

this paper aims at determining isfahan provincial industries orientation as well as relating the comparative advantage indexes and their changes with the province’s industrial characteristics. therefore, applying “factor analysis”, “principal components analysis” and “numerical taxonomy analysis” methods, the paper calculates the determining indexes of the province’s industrial development and ...

Some concern about recently published nonpatient data, plus the fact that some records in the published sample of 600 nonpatients (Exner, 2001) were collected more than 20 years ago, prompted the initiation of a project to develop a new nonpatient sample. In this article, findings are presented for the first 175 participants tested in the new project. It is noted that the data from the new proj...

This paper proposes a reduced rank regression framework for constructing coincident and leading indexes. Based on a formal definition that requires that the first differences of the leading index are the best linear predictor of the first differences of the coincident index, it is shown that the notion of polynomial serial correlation common features can be used to build these composite variabl...

This paper presents the fi rst comprehensive nationwide trend detection of mean discharges in Croatia. Over the last 30 years, global climate change has manifested itself largely in the rise of the average annual temperature, which has resulted in the changes of evapotranspiration and precipitation patterns. The consequences of those changes have been varied spatial impacts on river discharge (...

The GDP forecasting is a prior concern for each country, but also for an entire region composed by more countries with specific and different evolutions of GDP. The GDP predictions for the 27 European Union are based on two econometric techniques. It was proved, using accuracy indicators like U1 and U2 Theil’s coefficients and statistical tests (Morgan-Granger-Newbold test, Harvey-Leybourne-New...