An important part of “doing” science is engaging in collaborative science practices. To better understand how to support these practices, we need to consider how students collaboratively construct and represent shared understanding in complex, problem-oriented, and authentic learning environments. This research presents a case study centered on the work of four students in a human-centered robotics curriculum enactment. We explore how discursive features including embodied gesture and positioning of material artifacts contributed to the problem-solving process and helped students move towards deeper learning — showing how nonverbal and verbal discourses were used to construct agreement and disagreement, parallel interaction

Foreign Direct Investments and Tourism: Empirical Evidence From Turkey Elma SATROVIC, PhD Cag University, Turkey, elmasatrovic@cag.edu.tr Adnan MUSLIJA, MBA PhD candidate at University of Sarajevo, Bosnia and Herzegovina, adnanmuslija@msn.com ABSTRACT This study investigates the nature of causal relationship, if any, between tourism (TOUR) and foreign direct investments (FDI) using the case of Turkey. The observed period is between 1995 and 2015. In order to examine the existence of cointegration between the selected variables, the Johansen test for cointegration is applied. Moreover, the study applies the Granger causality procedure in a vector autoregression (VAR) model in order to estimate the relationship between the variables and the direction of relationship. VAR model is estimated following AIC information criteria that offers 5 lags. Findings indicate that the null hypothesis on no cointegration between the variables can be rejected. Therefore, evidence on the long run relationship between FDI and TOUR in Turkey can’t be rejected. In addition, Granger causality test indicates a positive relationship running from FDI to TOUR. Besides that, a positive relationship running from TOUR to FDI is also reported. Therefore, the Granger causality test indicates a bidirectional relationship between FDI and TOUR in Turkey in the short run. © 2017 PESA All rights reserved. Keywords: Tourism, Foreign Direct Investment, Cointegration, Causality, Turkey

Introduction: Up to 50% of patients with acute heart failure (AHF) have preserved left ventricular ejection fraction (HFPEF group)1. Due to diverse activated pathophysiological pathways, there should be a difference in biomarkers release in heart failure with preserved ejection fraction (HFPEF) and reduced ejection fraction (HFREF). BNP is the best studied biomarker in AHF, but we want to investigate difference in release of troponin (marker of myocytes stress and injury), tumor marker CA125 (marker of congestion and volume overload om HF) and cystatin C (marker of interstitial fibrosis).