The Sculpture Market: An Adjacent Year Regression Index

This paper analyses the performance of an investment in sculpture during theperiod 1987–1995 by applying the hedonic price technique with time dummyvariables to a sample of over 27,000 sales at auctions. The main finding isthat the adjacent year price index differs substantially between theinexpensive/middle portfolio and the expensive portfolio. The first showsthe existence of a boom period until 1990, followed by a non boom period. Bycontrast, the return of an investment in the expensive portfolio performedsomewhat better during the period analysed, with the only fall in the priceindex in 1990 and 1991.     

Moral development in a violent society: Colombian children's judgments in the context of survival and revenge

Ninety-six Colombian children (mean age = 7.7 years) and adolescents (mean age = 14.6 years) made judgments about stealing and physical harm in the abstract and in the context of survival and revenge. All participants judged it wrong to steal or hurt others because of considerations with justice and welfare, and most also judged it wrong to engage in such actions even when they can aid in survival. Their judgments in the context of revenge were more mixed, with a sizable proportion endorsing stealing and hurting in that condition. Furthermore, the majority expected that people would steal and hurt others in most situations. Significant age differences were also found. The consequences of political violence for moral development are discussed.     

Formative research on an early stage of the systemic change process in a small school district

This study utilised a qualitative research methodology known as formative research to improve the process guidelines that are described in the Guidance System for Transforming Education (GSTE). This study took place in a small (5447 students), partly urban and partly rural school district in Indiana. The researchers, also serving as change facilitators, investigated an early stage of the systemic change process as outlined in the GSTE. Specifically, the research focused on field‐testing and improving the process for assessing the district's readiness for change. It was found that this process could have been improved if the facilitators had had more guidance to help them develop the interview protocols.     

UNIVERSITY AUTONOMY: MODELS AND PERSPECTIVES

The author suggests that among the changes which will come in the wake of the reduction and the elimination of international boundaries in Europe will be an increase in the linkages among nationally peripheral higher education institutions which happen to be close together but on opposite sides of common international borders. Such linkages, which will no doubt profit from the parallel movement to increase the financial independence of higher education institutions vis‐!‐vis their national authorities, will probably also affect the centre‐periphery balance of power within given national higher education administrative authorities. These questions and others should quickly be made the objects of good comparative studies.     

超越技术整合走向技术转换

时至今日,技术对美国基础教育的影响甚微,鉴于此,美国教育部及技术界领导人士近年来力主将技术与学校教学两者予以整合。这场“技术整合”运动主要还是聚焦于如何运用技术来支持当今学校已经采用的各种教学方式。然而,如果我们想要找到技术能够“转换”现有教学方式的新路径,也许应该迈出更大的步伐。     

Newton and Colour: the Complex Interplay of Theory and Experiment

The general aim of this paper is to elucidate some aspects of Newton's theory of light and colours, specially as presented in his first optical paper of 1672. This study analyzes Newton's main experiments intended to show that light is a mixture of rays with different refrangibilities. Although this theory is nowadays accepted and taught without discussion it is not as simple as it seems and many questions may arise in a critical study. Newton's theory of light and colour can be used as an example of the great care that must be taken when History of Science is applied to science teaching. An inadequate use of History of Science in education may convey to the students a wrong conception of scientific method and a mythical idea of science.     

Male professional tennis players maintain constant serve speed and accuracy over long matches on grass courts

The potential effect of fatigue on stroke production in tennis players is still controversial. The aim of this study was to analyse the tennis serve speed and accuracy in prolonged male professional matches played on grass courts. We analysed tennis serve statistics from five-set Wimbledon matches (n?=?15; 30 players). Results showed that match duration averaged 208.3?±?28.3?min. The overall serve speed was 177.0?±?10.2?km/h in the first set and 176.1?±?11.7?km/h in the fifth set (p?=?.34). The difference of all accuracy values of first set serves was not significantly different from those of the fifth set: percentage of valid first serves, 63.1?±?11.1% vs. 62.3?±?11.8%, respectively (p?=?.78); percentage of “aces”, 11.2?±?9.1% vs. 10.0?±?8.9%, respectively (p?=?.39); percentage of “winners”, 2.6?±?7.6% vs. 1.2?±?2.2%, respectively (p?=?.36); percentage of “double faults”, 2.8?±?3.0% vs. 2.8?±?3.4% (p?=?.97). In conclusion, tennis players were able to maintain constant serve speed and accuracy over five-set matches played on grass courts. Professional tennis players are capable of overcoming fatigue and/or make movement adjustments to effectively perform complex technical strokes like the serve throughout matches played on grass courts lasting more than 3?h in average.     

Blocking CRT: How the Emotionality of Whiteness Blocks CRT in Urban Teacher Education

Although Critical Race Theory (CRT) has been applied to teacher education, it has yet to be meaningfully integrated into the core of urban teacher education programs. The reticence to embrace CRT is largely due to the overwhelming presence of Whiteness, despite Sleeter's (2001) demand for diversification. This theoretically interpretative article employs CRT's methodology of counterstorytelling to interrogate how Whiteness manifests itself in emotional ways, like fetishism and sentimentalization, and how such emotions are the root of resistance toward CRT in teacher education. Drawing from Black feminism and Critical Whiteness Studies, we utilize emotionally-based theories to illustrate the importance of CRT in teacher education, to identify barriers to CRT, and to recommend how teacher education can more genuinely reinvest in antiracism.     

What we can learn from the use of student data in efficiency analysis within the context of higher education?

The main purpose of the paper is to estimate the efficiency of a big public university in Italy using individual student-level data, modeling exogenous variables in human capital formation through a heteroscedastic stochastic frontier approach. Specifically, a production function for tertiary education has been estimated with emphasis on inefficiency and its determinants, taking explicitly into account the role played by students’ socio-economic and educational background. The empirical evidence, based on 48,338 freshmen, leads towards the use of individual-level data in order to control for the portion of the student academic achievement affected by the personal characteristics and effort, and the portion ascribable to the resources or organization of the institutional activities. Within the limit of external validity allowed by operating within only one university, efficiency scores derived from using both individual-level and aggregate level data do offer an important instrument to the university and governance structures.