Emerging trends on the topic of Information Technology in the field of Educational Sciences: a bibliometric exploration

The paper presents a bibliometric analysis on the topic of Information Technology (IT) in the field of Educational Sciences, aimed at envisioning the research emerging trends. The ERIC data base is used as a consultation source; the results were subjected to productivity by authors, journals, and term co-occurrence analysis indicators for the period 2009-2013. The productivity of Computers & Education, and Turkish Online Journal of Educational Technology-TOJET, as well as the preceding authors from Canada, have been emphasized. The more used terms are the following: Information technology, foreign countries, educational technology, technology integration, and student attitudes. Researches performed here seem to have a largely qualitative character, highlighting computers and internet as the mostly explored technological objects. The largest subject matter trend refers to the integration of IT in the higher education learning context, and its incidence over the teaching methods

Exploring Discourse Ethics for Tourism Transformation

The 'critical turn' in tourism studies is defined as a research perspective that explores social transfor- mation in and through tourism by facing the negative impact of strategic-instrumental rationality on this activity. This work explores the features of discourse ethics that may normatively support tourism transformation, a gap that has not been thoroughly discussed in tourism research. For this purpose, the study combines the use of critical and ethical theory with an analysis of discourse ethics in tourism literature to demonstrate that the use of Habermasian discourse ethics needs to be complemented with the Apelian approach. Through these steps the work reveals the theoretical bases of discourse ethics to discuss whether understandings between stakeholders guided by strategic-instrumental rationality can be reached not only in the political sphere —Habermas—, but also in the ethical field —Apel

Reflection formulas for order derivatives of Bessel functions

From new integral representations of the $n$-th derivative of Bessel functions with respect to the order, we derive some reflection formulas for the first and second order derivative of $J_{\nu }\left( t\right)$ and % Y_{\nu }\left( t\right) for integral order, and for the $n$-th order derivative of $I_{\nu }\left( t\right)$ and $K_{\nu }\left( t\right)$ for arbitrary real order. As an application of the reflection formulas obtained for the first order derivative, we extend some formulas given in the literature to negative integral order. Also, as a by-product, we calculate an integral which does not seem to be reported in the literature.Comment: arXiv admin note: text overlap with arXiv:1808.0560

The Effect of Divorce Laws on Divorce Rates in Europe

This paper analyzes a panel of 18 European countries spanning from 1950 to 2003 to examine the extent to which the legal reforms leading to "easier divorce" that took place during the second half of the 20th century have contributed to the increase in divorce rates across Europe. We use a quasi-experimental set-up and exploit the different timing of the reforms in divorce laws across countries. We account for unobserved country-specific factors by introducing country fixed effects, and we include country-specific trends to control for time-varying factors at the country level that may be correlated with divorce rates and divorce laws, such as changing social norms or slow moving demographic trends. We find that the different reforms that "made divorce easier" were followed by significant increases in divorce rates. The effect of no-fault legislation was strong and permanent, while unilateral reforms only had a temporary effect on divorce rates. Overall, we estimate that the legal reforms account for about 20 percent of the increase in divorce rates in Europe between 1960 and 2002

Numerical study of the shape and integral parameters of a dendrite

We present a numerical study of sidebranching of a solidifying dendrite by means of a phase--field model. Special attention is paid to the regions far from the tip of the dendrite, where linear theories are no longer valid. Two regions have been distinguished outside the linear region: a first one in which sidebranching is in a competition process and a second one further down where branches behave as independent of each other. The shape of the dendrite and integral parameters characterizing the whole dendrite (contour length and area of the dendrite) have been computed and related to the characteristic tip radius for both surface tension and kinetic dominated dendrites. Conclusions about the different behaviors observed and comparison with available experiments and theoretical predictions are presented.Comment: 10 pages, 7 figures, Accepted for publication in Phys. Rev.