Deconstructing Rattan: Morphology of Biogenic Silica in Rattan and Its Impact on Preservation of Southeast Asian Art and Artifacts Made of Rattan

Rattan, a climbing palm of the tropical region of Southeast Asia (SEA), supplied material for objects of myriad purposes including ceremonial, religious, utilitarian, and artistic as exemplified by the collections at the National Museum of Singapore, Asian Civilization Museum, and the Singapore Art Museum. The aim of this analysis of rattan is to further the understanding of rattan, in particular its surface, and to propose a protocol-enabling positive identification of rattan in artifacts, thus guiding conservation decisions. The rattan surface defines an artifacts esthetic appearance and stability, and understanding its characteristics is essential to the development of an informed preservation strategy. Rattan epidermis morphology, topography, and cellular structure were characterized by a multi-scale and a multi-sensory approach using optical microscopy, confocal laser scanning microscopy, and field-emission scanning electron microscopy (FESEM). The chemical composition was analyzed with energy dispersive X-ray spectroscopy and macro-X-ray fluorescence spectroscopy (m-XRF) and indicated the presence of a siliceous compound, biogenic silica, in the epidermis and phytoliths in vascular tissue. A parallel analytical protocol was applied to samples extracted from museum artifacts (nineteenth-twentieth century) and contemporary objects acquired during field studies in Indonesia, Malaysia, Myanmar, and Cambodia. The methods of processing rattan have a direct impact on the siliceous layer thus leading to a better understanding of surface patterns found on artifacts. An attempt to find correlations between the percentage of silica and thickness of the siliceous layer did not produce conclusive results; both varied greatly in all studied examples. Darkening of rattan was clearly associated with aging but did not indicate any distinct effect on the chemical composition of the outer layer. The chemical analysis of the biogenic silica layer combined with recording methods of processing rattan observed during field studies in SEA provide a basis for a better understanding of rattan collections in the museum context.     

A new approach to high-order cognitive skills in linguistics: problem-solving inference in similarity to computer science

A central issue in the design of curricula for all school levels is the development of the learners’ high-order thinking skills and metacognitive skills. Among such required skills is the ability to solve problems. The literature dealing with the development of problem-solving skills is vast and primarily addresses the scientific disciplines, even though the importance of integrating such skills into all disciplines is widely mentioned. The current study aims to compare problem-solving questions used in two seemingly different disciplines: linguistics and computer science. Our premise was that the basis for imparting problem-solving skills is asking problem-solving questions. We analysed problem-solving questions posed in various teaching and learning school scenarios for keywords, and identified nine categories of problem-solving question keywords common to both disciplines. We present those categories and extend our study of two categories to demonstrating the ability to follow the problem-solving process in linguistics is similar to the exact sciences.     

Attitudes,Emotions, and the Use of Emoji in Social Networking Apps by Children,Adolescents, and Young Adults

Interchange - In this mixed-method study, we sought to examine attitudes, expression of emotions, and the use of emoji in social networking by children, adolescents, and young adults. A total of...     

A University Program with “The Whole World as a Focus”: An Icelandic Response to Globalization

The International Studies in Education program at the University of Iceland illustrates how one university is responding to global trends in higher education. Through a case study we examined the significance of an innovative B.A. program, which is taught in English, aligned with values affirmed in critical multiculturalist scholarship, and designed to respond to demographic changes including a sharp increase in Iceland’s immigrant population. The experience of students, teachers, and administrators raises important questions about institutional responsibilities, both local and global; about the role of English in an international studies program; about de facto segregation of students; and about the significance of local context in global trends in higher education.     

Pupil perceptions of national tests in science: perceived importance, invested effort, and test anxiety

Although large-scale national tests have been used for many years in Swedish compulsory schools, very little is known about how pupils actually react to these tests. The question is relevant, however, as pupil reactions in the test situation may affect test performance as well as future attitudes towards assessment. The question is relevant also in light of the changing assessment culture in Sweden and other European countries. The main purpose of the present study was to explore how a sample of grade 9 pupils perceived their first encounter with national tests in science, mainly in terms of perceived importance of the test, reported invested effort, and feelings of test anxiety, and how these aspects were related to test performance. Results show that a majority of the pupils seemed to perceive the test as rather important and claimed that they spent effort on the test. There was, however, also a fair group of students who did not perceive the test as very important. Ratings of perceived importance and invested effort and motivation were positively related to performance, particularly for the boys. Many students also reported that they felt anxious before and during the test, but the relationship between test anxiety and test performance was rather weak. Findings illuminate how pupils may perceive and behave in the assessment situation, and point to the need of further studies investigating the psychology of test-taking.     

THE DIMENSIONS OF EXPRESSION INHIBITION: PERCEPTIONS OF OBSTACLES TO FREE SPEECH IN THREE CULTURES

As part of a comparative study of attitudes toward freedom ofexpression, Americans, Israeli Jews, and Israeli Arabs wereasked about the social contexts in which they feel unfree tospeak and about the reasons that inhibit them. Home was theleast inhibiting locus in all three cultures and, for the U.S.respondents, the workplace was most inhibiting. Responding toa battery of 33 reasons for not speaking out, all three culturesgave highest ratings to items related to the fear of hurtingothers. Questions measuring fear of being disapproved or hurtby others—including fear of isolation from the majorityand fear of legal restraint—were ranked lower. An overallindex of inhibition items proved highly reliable cross-culturally.Americans claimed least inhibition and Israeli Arabs most. Malesand those with higher education levels and incomes were alsoless inhibited across the three cultures. Expression inhibitionwas negatively, through weakly, related to support for expressiverights among both Israeli groups and American whites but notAmerican blacks, where the relation was positive. Expressioninhibition was negatively related to political activity amongAmericans and Israeli Jews but not among Arabs.