A phenomenographic study of Greek primary school students’ representations concerning technology in daily life

The present research investigated and studied students’ representations about daily life technologies, in a prospect of studying technology in Greek primary education. In the research participated 60 Greek primary school students aged 9 to 12 years old. Research data were collected through semi-structured, personal, clinical-type interviews. Each interview investigated student’s conceptions and views about the following thematic areas: the concept of technology, daily life technologies, technological change, and the impact of technology use in everyday life. Data analysis revealed that the majority of students equated technology with modern tools and appliances, especially with computers, TV, mobile phones, satellites and other micro- and macro-technologies, whereas experience based technologies (de Vries, Technology education: Beyond the “technology is applied science” paradigm. J. Technol. Edu. 8 (1996), 7) have been hardly recognized by them as technology. Also students’ representations can be categorized either as technology-oriented representations, which focus on a collection of technical means without reference to humans, or as human-oriented representations, focused on technical means with substantial reference to human needs and activities. Depending on these types of representations, students seem to conceive differently the nature of the problems, which they recognize that the wide use of technology causes mainly to the environment and the responsibility of the user for these problems. Moreover, it seems that the concept of technological change is a quite difficult one for the students. In order to help students form adequate representations about daily life technology and technological change an appropriate teaching approach was designed on the basis of these students’ representations.     

Child Health and Economic Crisis in Peru

The effect of macroeconomic crises on child health is a topicof great policy importance. This article analyzes the impactof a profound crisis in Peru on infant mortality. It finds anincrease of about 2.5 percentage points in the infant mortalityrate for children born during the crisis of the late 1980s,which implies that about 17,000 more children died than wouldhave in the absence of the crisis. Accounting for the precisesource of the increase in infant mortality is difficult, butit appears that the collapse in public and private expenditureson health played an important role.     

Durability Versus Concentration as an Explanation for Price Inflexibility

We document the extent of price rigidity across United States manufacturing industries in the 1980s and early 1990s and compare rigidity across different phases of the business cycle. We measure price rigidity in three ways – each under four different sets of assumptions. We take an approach that relies on disaggregated data; we look at price patterns for over 4000 individual manufactured commodities. Both durability and seller concentration are found to be important factors explaining differences in price rigidity across industrial product classes. Using our data, we replicate the regression results found in Carlton (1986) that were based on actual transaction prices from the 1960s.     

When hubs forget,lie, and play favorites: Interpersonal network structure,information distortion,and organizational learning

The interpersonal network structure of an organization directly influences the diffusion and recombination of ideas and can thus facilitate or impede organizational learning. Most interpersonal networks have ‘hubs’—individuals who have significantly more connections than does the average member. This raises important questions about how hubs influence organizational learning outcomes. Does the presence of hubs improve or impair performance? What happens if hubs forget or misrepresent information that is transmitted through the network? Using simulation models, we find that moderately hubby networks outperform both very hubby and democratic networks. We also find that moderate amounts of information omission or misrepresentation can be surprisingly beneficial to performance, though the patterns of their effects are strikingly different. Copyright © 2013 John Wiley & Sons, Ltd.     

Training for business start-up in Scotland — the gender dimension

This paper looks at two examples of business start-up training in Scotland which have specifically targeted women, both younger women entering the labour market for the first time and older women who are either unemployed or returning to the labour market after raising a family. We argue that women face a double disadvantage in trying to start up and run their own business. Traditionally women have not been seen as business owners and are under represented in the small business sector. Secondly women perform a dual role in that they are almost always responsible for domestic and family concerns, whether they are economically active or not. We recognise that “gender constraints” exist and discuss the training programmes we have developed which in their style, content and timing set out to meet the special needs of women contemplating self employment.     

谁是北岩银行的“救命稻草”

北岩银行年初还因金融创新受到英国金融当局的褒奖，谁成想，仅仅9个月过后北岩银行的高管就沦落到人人指责的境地。     

Risk Premia in Foreign Currency Futures

This paper tests the uncorrelatedness of increments of daily foreign currency futures prices and derives implications for risk premia based on a heteroscedasticity-robust variance ratio test. There is evidence suggesting the existence of a time-varying risk premia. Moreover, the results suggest that currency futures price is not an unbiased predictor of currency spot price on corresponding maturity date of currency futures contract. The paper also applies a heteroscedasticity-adjusted Box-Pierce Q test to the same data set for comparison.     

Assessing the impact of JIT using economic theory

This paper combines ideas that are well founded in the production and inventory management literature, with analytical approaches that have been long established in the economic theory literature, to reveal and explore production-function characteristic differences between JIT producers and non-JIT producers among electronic firms in Ontario, Canada. The methodology employed is the estimation of the CES-TL total cost system. Our primary conclusion is that JIT firms are more cost-efficient and appear to be distinct from the non-JIT group. This conclusion is supported by: (1) the fact that, in most cases, the elasticities calculated from the two groups of firms are significantly different; (2) the fact that the cost elasticity with respect to output is lower for the JIT firms than for the non-JIT firms, indicating that the former are better able to capture economies of scale and density; (3) the difference between the elasticities of factor productivity, with respect to output changes, shows the JIT firms as being more labor- and materials-saving than the non-JIT firms.     

Insider and Outsider Strategies of Influence: The BRICS’ Dualistic Approach Towards Informal Institutions

ABSTRACT

The challenge of ‘emerging’ countries in the 21st century has been conducted in a much more peaceful manner than in past eras when power transitions were most commonly accompanied by war. The hallmark of this peaceful transition has been the elevation of the G20, a forum in which established and emerging powers jointly deal with global economic issues and which – despite or precisely because of its informal character – has become the prime forum for global economic governance. Significantly, however, this new openness and flexibility of the international system and its increasing informalism have not only provided an avenue for emerging powers to be integrated into the inner circle of global economic governance, but have also allowed them to set up alternative institutions. By forming their own exclusive BRICS group in parallel to their membership in the G20, emerging powers have pursued a dualistic strategy that allows them to be simultaneously institutional ‘insiders’ and ‘outsiders’. The article focuses on this seemingly ambiguous international behaviour and explains why the BRICS have opted for this dualistic approach. Far from being socialised into the established system, the oppositional psychology of the past has not disappeared completely.