Structural engineering and geology applied to the static problems of the Etruscan “Tomba dell’Orco” (Tarquinia,Central Italy)

The Etruscan Tomba dell’Orco was discovered in 1868. However, soon after discovery, part of its ceiling collapsed. An investigation was thus conducted with a view to assessing its safety conditions and permitting visitors’ access. Petrographic and physico-mechanical features of the local weak sandstones and mechanically more resistant calcareous sandstones “macco” were determined. Field mapping, drill-holes and geophysical prospecting helped reconstruct the stratigraphy of the volume where the tomb was excavated. The stability of the tomb basement is given by a thick macco layer. A few dm macco layer was identified above the ceiling. A model was then prepared with the Plaxis 2D V8.6 software. The safety coefficients calculated along two cross-sections of the tomb indicated that the margins for the tomb stability are reasonable.     

Making the Connection Between Formal Human Resource Diversity Practices and Organizational Effectiveness: Behind Management Fashion

ABSTRACT : Formal human resource diversity programs have experienced rapid growth; yet research on how these initiatives influence organizational effectiveness remains insufficient. This research explores formal diversity programs' influence on organizational effectiveness using universalistic and contingency frameworks. Our findings show that universally, diversity practices strongly and negatively relate to turnover. Organizations with innovative strategies coupled with formal diversity practices had improved productivity and market performance supporting contingency notions. Future research should employ both the universalistic and contingency theories in combination for a more in-depth understanding of construct relationships.     

Learning from and responding to students' questions: The authoritative and dialogic tension

In this study we present an analysis of classroom interactions initiated by students' wonderment questions. Our interest in such events arises from their potential to stimulate active intellectual engagement in classrooms, which can impact upon the subsequent development of the classroom discourse. In investigating this issue we shall address the following research question: How do student questions impact upon the teaching explanatory structure and modify the form of the ongoing classroom discourse, in selected science lessons? From data collected in a Brazilian secondary school we have selected three classroom episodes, with large differences in both the context in which the student's question emerges and in the communicative approach developed in response to it. The analysis, based on the framework proposed by Mortimer and Scott [Mortimer and Scott (2003). Meaning making in secondary science classrooms. Maidenhead: Open University Press], shows that questions made by students are important in providing feedback from students to the teacher, enabling adjustments to the teaching explanatory structure. These adjustments sometimes occur smoothly, at other times with major changes to the features of the classroom discourse, and elsewhere with misunderstanding and disagreement. The data also suggest the need to consider students' intentions and their active participation in the negotiation of both the content and structure of classroom discourse. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:174–193, 2010     

Educational performance and attitudes toward school as risk‐protective factors for violence: A study of the Asian/Pacific Islander Youth Violence Prevention Center

The purpose of this study was to examine whether school experiences, school performance, and other risk‐protective factors were related to violence among Hawaiian, Filipino, and Samoan youths residing in Hawai'i. This study analyzed survey data (N = 325) collected in three high schools having concentrations of Filipino, Hawaiian, and Samoan youths, as well as a smaller number of Japanese students, which served as a comparison group. The analyses consisted of bivariate and multivariate analyses of risk protection for violence. Two‐ and three‐way interactions were tested to examine whether there were specific gender and/or ethnic effects. The final model explained 29.3% of the variance in violent behavior. Five variables were significant: grade point average, pressure to choose between school and friends, favorable school attitude, feeling safe, and importance of college. Schools serving these populations should focus on fostering positive bonds between teachers and students and building bridges to families and neighborhoods. © 2010 Wiley Periodicals, Inc.     

Turning Minds On and Faucets Off: Water Conservation Education in Jordanian Schools

Abstract

An evaluation was conducted to measure the impact of a curriculum implementation through the Jordan Water Conservation Education Project funded by USAID. This study examined the effect of recommending water conservation at the household level and the impact of using interactive teaching methods to promote conservation behaviors among students and their families. The evaluation used a postintervention design with random selection of participants. Comparisons were made among 671 students (424 experimental, 247 control) belonging to high school eco-clubs in central Jordan. Most students were girls in rural settings. The experimental group consisted of students whose teachers implemented an interactive curriculum and promoted household water-conservation behaviors. Teachers of students in the control group did not participate in the curriculum implementation, but those students were exposed to lectures about biodiversity issues. The results indicate that students who were exposed to the new curriculum demonstrated a higher level of knowledge about water conservation and performed recommended behaviors more often than students in the control group.     

School Choice in Black and White: Private School Enrollment Among Racial Groups, 1990–2000

This study investigates how much the racial composition of communities influences the private school enrollment rates of members of different racial groups. Some scholars argue that private school enrollment contributes to racial segregation in public schools because White families attempt to enhance the social status of their children by leaving public schools serving communities with higher percentages of children who are Black. A second group of scholars argue that private school enrollment is primarily based on nonracial factors. A third, related perspective argues that race is of diminishing importance in driving behaviors such as school choice. This study explores these perspectives using 1990 and 2000 Public Use Micro Data Samples to estimate private school enrollment rates by student race and community racial composition. Findings indicate that private school enrollment rates among Asian, Black, and Hispanic students do not fluctuate much with community racial composition. By contrast, private school enrollment rates among White families are strongly and positively correlated with the percentage of children in their communities who are Black—even after holding constant a series of individual and community-level factors that may account for this trend. Moreover, the association between race and choice has changed little between 1990 and 2000.     

Veteran teachers and technology: change fatigue and knowledge insecurity influence practice

In recent years, a significant problem that has manifested in the quest to capitalise on the pedagogical potential of technology in schools is that veteran teachers are unwilling to integrate these resources into their practices. Given that veteran teachers comprise up to 40% of teachers, their lack of use is important. This paper aims to shed light on the issue of detachment by presenting empirically based findings of a five-year, grounded theory examination of the technology practices of a small group of veteran teachers. Data included classroom observations, teacher interviews and document analysis of teacher and school planning documentation, student focus groups, interviews with teaching colleagues and key school technology personnel observation. Analysis included the application of the teachers’ data to a framework of dilemmas teachers encounter when expected to change their practice. In using this process, change fatigue and knowledge insecurity (brought about by cultural and political changes to their contexts) were prominent factors which contributed to the teachers’ lack of technology use. Identifying their challenges opened scrutiny to the myriad of factors they drew on when making decisions about how and whether to use technology in their practice. The longitudinal analysis of the data showed that as these dilemmas alleviated, the teachers became more committed to educational technology. The findings inform how we can move forward from the issue of veteran teachers’ lack of use of technology to how to support this group in the development of their practices. In particular, the need for a re-imagining of professional learning to one which focuses on reshaping cultural and political aspects of technology practices. This includes changes to the management of technology-related policy changes as well as facilitating learning communities that promote a valuing and sharing of relevant knowledge amongst teachers and students.