Early detection of fungal biomass on library materials

Library materials are susceptible to fungal deterioration. The paper constituents of archival materials are subjected to harmful physical and chemical processes as they are slowly consumed by fungi. Remediation of fungal contamination can be costly and risk further damage to fragile or previously degraded materials. Early detection of fungal growth would permit the use of relatively noninvasive treatments to remediate fungal contamination of artifacts before visible or lasting damage has occurred. Current methods used for the detection of microbial biomass, such as colony counts, microscopic biovolume estimation, and ergosterol analysis are expensive, time consuming, or are inappropriate for use with fungi. Beta-N-acetylhexosaminidase (EC 3.2.1.52) activity provides a rapid and reliable means of fungal detection on a variety of cultural heritage materials. Adapted for use on archival materials, fluorogenic 4-Methylumbelliferyl (MUF) labeled substrate N-acetyl-Beta-D-glucosamine (NAG) was used to detect fungal beta-N-acetylhexosaminidase activity. The fluorescence generated by minute quantities of fungi was quickly detected at an early stage of growth. The sensitivity of the assay was comparable to other biochemical techniques. The fluorometric assay was well-suited for early detection of fungal biomass on paper and assessment of the effectiveness of common remediation practices.     

Online Career and Technical Education in the Community College

ABSTRACT

Very little empirical research has been conducted about online career and technical education (CTE). Despite the continuing enrollment growth in online education (Lokken, 2016) and the national emphasis on CTE as a means of boosting the economy (D’Amico, Morgan, Katsinas, & Friedel, 2014), relatively little is understood about the scope and impact of online CTE at the community college. In this article, I briefly summarize existing empirical literature about online CTE.     

Education and Skills Development in China-Africa Cooperation

Education, skills, and the development of an African workforce are at a critical moment. While it is recognized that Chinese firms hire local people, the focus of the debate is more on the position and opportunities for training and advancement. As such, the paper tries to answer the following questions. Does China really contribute to skills development in Africa? Does China employment, education, and skills transfer pattern contribute to Africa’s own structural transformation and benefit African workforce? In attempting to answer these questions, this paper first lays out the current magnitude of demand for skills in Africa and the priorities for education and skills transfer that can successfully address Africa’s skills shortage. Significantly, this will enable researchers and non-researchers to understand the diversity of Chinese firms’ skills transfer patterns and the reasons behind these patterns. In order to present a comprehensive and precise picture as well as understand the context for China and Africa education and skills transfer development, the paper draws from various data collected from diverse sources, including government statistics, firm reports, second-hand academic literature, local and international news media, official government reports, and research studies. The paper suggests that the assessment of skills transfer pattern should not only consider employees’ and employers’ direct interests, but also in the short run, skills transfer should focus on offering short, practical courses to secondary and higher education graduates involving primarily on-the-job training. In the long run, there is a need to change the way employees and students are trained, including curriculum reforms that favor science, technology, engineering, and mathematics. Emphasis should also be placed on critical thinking, problem-solving, discovery, and experiential training.     

Towards a model of interprofessional preparation to enhance partnering between educators and families

Abstract

Interprofessional education (IPE) involves cross disciplinary learning, teaching, and supervision to foster greater interdisciplinary collaboration. In the field of medicine, this training approach has been adopted to improve collaboration amongst health care professionals. Rarely has this approach been adopted in regard to the preparation of student teachers. Yet professionals from the disciplines of general and special education, school social work, and school psychology often must work together and with families and pupils. A rationale will be forwarded for offering IPE to graduate students in these fields before they graduate. A multi departmental project was undertaken to design a new IPE training programme to foster collaborative knowledge of, dispositions towards, and skills in family school partnering. The components of the programme, the proposed criteria to gauge the success an initial pilot of the programme, and challenges faced in setting up such cross-discipline training will be described with lessons learned for the future.     

Student trust in teachers and student perceptions of safety: positive predictors of student identification with school

This study examined the effects of student trust in teacher and student perceptions of safety on identification with school. Data were collected from one large urban district in an eastern state. Participants included 5441 students in 3rd through 12th grades from 49 schools. Students responded to surveys that assessed student trust in teachers, safety and identification with school. Free and Reduced Lunch (a proxy for SES), school level and ethnicity were included as control variables. Two hypotheses guided the study. Hypothesis 1 stated that student trust, safety and identification with school would positively covary. Hypothesis 2 predicted that student trust in teachers and perceptions of safety were school properties that would individually and collectively explain differences among schools in student identification with school. Both hypotheses were confirmed. The results of the hierarchical linear model indicated that student trust in teachers and school safety accounted for 98% of the 22% of variance that exists among schools in student identification. SES, school level and ethnicity were not significant predictors of identification with school. Findings suggest that student trust in teachers and perceptions of safety may significantly contribute to student identification above the effects of SES, ethnicity and school level.     

Using Social Media to Assess Conceptualizations of Sexuality

There is currently no validated model explaining the variability of sexual expression. This has created a scenario where sexuality, as a construct, is purely intuitive. Sexuality educators have frequently presented the Circles of Sexuality, a model that contends that sexuality is a combination of intimacy, sensuality, sexual health/behaviors, sexual identity, and sexualization. Adapting photovoice methodology and using the social media site Tumblr, the current analysis used this model to assess the social conceptualization of sexuality. Results indicate that the circles are unequally represented, with intimacy underrepresented and sexual identity overrepresented. Implications for sexuality educators, clinicians, and researchers are discussed.     

Examining the task and knowledge demands needed to teach with representations

Representations are often used in instruction to highlight key mathematical ideas and support student learning. Despite their centrality in scaffolding teaching and learning, most of our understanding about the tasks involved with using representations in instruction and the knowledge requirements imposed on teachers when using these aids is theoretical. In this study, we examine the task and knowledge demands for teaching integer operations with representations by analyzing teaching practice. Teaching integer operations is used as an intensity case, as integer operations are challenging for students, and teachers are often required to employ several representations to teach this topic. Following a practice-based approach while also taking prior literature into consideration, we first generate a list of tasks entailed in teaching with representations and then discuss the knowledge demands imposed on teachers to successfully undertake this work. We highlight these tasks and knowledge demands by analyzing and discussing an integer addition and an integer subtraction episode for each of two teachers, Bonita and Karen. Based on our analysis, we organize the generated knowledge components using the Mathematical Knowledge for Teaching framework. We conclude by drawing implications for teacher educators and curriculum developers.     

Filmed in Front of a Live Studio Audience: Laughter and Aggression in Political Entertainment Programming

Shows blending humor and information are on the rise, and many such shows incorporate live studio audiences. Using two separate experimental studies, we test whether audience laughter on humorous political talk shows affects audience perceptions. We find that the effects of audience laughter depend on context, boosting perceptions of host and program credibility when a host is unknown, while reminding viewers of the comedic intentions and appeal of a known comedic host. If humor allows the hosts of comedic political talk shows more freedom to pointedly question their guests without turning off viewers, it may better engage and inform audiences.     

A computer simulation model of tennis racket/ball impacts

A forward dynamics computer simulation for replicating tennis racket/ball impacts is described consisting of two rigid segments coupled with two degrees of rotational freedom for the racket frame, nine equally spaced point masses connected by 24 visco-elastic springs for the string-bed and a point mass visco-elastic ball model. The first and second modal responses both in and perpendicular to the racket string-bed plane have been reproduced for two contrasting racket frames, each strung at a high and a low tension. Ball/string-bed normal impact simulations of real impacts at nine locations on each string-bed and six different initial ball velocities resulted in <3% RMS error in rebound velocity (over the 16–27 m/s range observed). The RMS difference between simulated and measured oblique impact rebound angles across nine impact locations was 1°. Thus, careful measurement of ball and racket characteristics to configure the model parameters enables researchers to accurately introduce ball impact at different locations and subsequent modal response of the tennis racket to rigid body simulations of tennis strokes without punitive computational cost.     

(Re)turning to practice in teacher education: embodied knowledge in learning to teach

Contemporary research conversations about the utility of practice theories to professional education support the reconceptualisation of pre-service teacher education in ways that provide strong preparation for continued professional learning. This paper reports on an empirical inquiry that introduced a theoretically informed practice-based intervention in a pre-service teacher education course in order to judge the utility of such an approach for student learning. Innovations within the Study of Teaching programme illustrate the bringing together of pedagogies of observation, pedagogies of enactment, and pedagogies of reflection toward an integrated theory of teacher education that focuses on the teaching body as a central site for research and for the building of preparatory knowledge and skill for ongoing learning. Data was collected from pre-service teachers involved in the programme through video and audio recordings along with individual and focus group interviews, questionnaires and student reflection on video recordings. These were analyzed within an emerging theoretical framework derived from both practice-theoretical literature and international empirical research into core practices. Initial findings suggest that a focus on practice within pre-service teacher education may enhance traditional understandings of ‘practice-based’ approaches that situate the study of practice outside of the university, in school settings. These findings have implications for the ongoing reform of teacher education in increasingly regulated contexts framed in terms of teacher quality.