Search results

In this self-study, a pre-service teacher educator and her students in a pre-service teacher education program course elective – “21st Century Teaching and Learning with Technology” – explored and reflected upon the complexities of imbedding inquiry-based learning as both a method of teaching and for learning about integrating technology into teaching practice. They discovered that inquiry activities incorporating application, synthesis, and critical analysis functioned as effective learning vehicles through which individuals can explore their own orientations and understandings. An authentic task for learning in which students were tasked with taking on responsibility for a cross-disciplinary, multi-grade professional development workshop for classmates proved to be the cornerstone upon which students gained self-efficacy in terms of beliefs in personal abilities to integrate technology, refined pedagogical perspectives, and theorized ways to enhance and nurture inquiry-based teaching and learning environments in 21st century classrooms that infuse technology. Their development was due, in part, to how their instructor presented learning content and modeled practice that was shaped by philosophies of teaching and learning.

12 mil pitch processing is achievable with solder paste. It may also be the limit of solder paste printing technology, mainly due to the scooping problem associated with thin stencils. With decreasing pitch size, both smear and insufficiency rate increase. Tapering of stencil aperture helps thick stencil prints, but has an adverse effect on thin stencil printing. Apertures with orientation parallel to squeegee movement result in a higher print defect rate. Overall, the use of fine powders is the most effective means to meet most challenges. It helps in achieving high performance in printability, tack and non‐slump, with acceptable trade‐offs in rheology and tack time. Solder balling may be the primary drawback. The problem may be resolved by using inert reflow atmosphere or via flux chemistry improvements. A metal load of 90.5 to 91% seems to be the optimum for most properties.

The examination of products of aqueous and non aqueous corrosion is carried out to obtain information about one of a combination of aspects such as composition, hardness, stress level, adhesion to basis metal and other mechanical properties (figure 1). A number of techniques are avialable to investigate corrosion products and some of these techniques have found greater application with products of aqueous corrosion and some with products of gaseous corrosion. This paper presents the technqiues available for obtaining information about the various aspects mentioned above and discusses the main characteristics, nature of data obtainable, advantages and limitations of some of the less know techniques.

This paper aims to provide a focused overview of two dioxin incidents, with particular emphasis on regulatory successes and failures and their respective causes. The paper seeks to adopt a comparative approach to the case studies, with considerable use made of primary sources such as parliamentary debate, government reports and EC legislation.

The paper is a review of the strengths and weaknesses in the management of the Belgian and Irish dioxin contanimation incidents.

It is concluded that open, transparent and decisive risk management, based on robust risk assessment, is paramount in ensuring confidence in both the food supply chain and, in the feed and food safety regulatory process. It is also concluded that the 2008 Irish dioxin incident tested the reforms prompted by previous food scares.

It is important that the lessons from these two incidents are learnt if they are not to be repeated in other jurisdictions.

This is the first academic study of the 2008 Irish dioxin incident, one of the most significant recent food scares in the European Communities. The incident emphasises the vital role of open, transparent and decisive decision making in managing risk. In addition, through a comparative analysis of the Belgian and Irish incidents, the utility of the reforms prompted by previous food scares is demonstrated. In particular, the study highlights the important role played by the European Food Safety Authority in one of its first major tests as a risk assessor and risk communicator.

Information and Communication Technology offers powerful Web 2.0 tools that can benefit learners with different learning preferences. The rise of video streaming, the increased proliferation of ‘on demand’ televisual media and new smartphone streaming opportunities have generated a range of web-based media that may usefully support teachers and learners in accommodating these varied learning styles. At the same time, media streaming technologies such as YouTube have distinct drawbacks for students, teachers and their institutions, particularly in relation to appropriate content and the ethical issues around the uploading of student materials to a public repository.

Two studies are reported. In Study 1, two case studies of how teachers engaged students with a media-streaming system called Box of Broadcasts (BoB) are discussed using principles of design-based research. The result from the first case study indicated that BoB provided an improved efficiency for teachers who filmed students’ presentations in a second language. The second case study illustrated how the integration of BoB into their classroom teaching led a psychology teacher to think differently about students and the design and delivery of teaching and learning resources. In Study 2, the use of a qualitative semi-structured interview approach with eight teachers indicated that staff felt that BoB was beneficial in supporting pedagogic practice. Furthermore, staff highlighted the opportunities for dialogue about theory, reality and practice that video materials offered to students as added value. Key limitations for some staff in their use of BoB as a support for video-enriched pedagogic practice were the restricted level of available content on BoB, some difficulties relating to the skills required for creating and using clips and technical stability when using clips.

There have been calls to embed Information and Communication Technology (ICT) into pre-service teacher courses in preference to technology only courses as a means to provide graduate pre-service teachers with the necessary skills to integrate ICT into their teaching practice. This chapter describes a case study of a pre-service science education curriculum course that was designed to embed ICT into its curriculum, assessment and delivery. The tutor modelled best teaching practice in the use of learning technologies. The theoretical framework is Technological Pedagogical and Content Knowledge (TPACK) viewed through a representation construction approach. This approach involved the students undertaking a series of representational challenges where they constructed and critiqued representations. The study found increased student engagement with learning technologies and an enhanced TPACK over the period of the course. Several factors that may have led to these findings are discussed.

A whole series of food scandals indicates that misdirected incentives continue to be a source of food risks. Lacking market transparency and the opportunistic use of seemingly profitable opportunities to break the rules cause negative externalities and failure of markets. The purpose of this paper is to investigate the influence of mandatory transparency schemes on food businesses’ behavioural drivers and thus on compliance.

The authors use an adopted analytical framework developed by Hirschauer et al. (2012) as the theoretical background. The authors provide an empirical analysis of the effects of a disclosure system on businesses’ behavioural drivers in three urban parts of the German capital Berlin. The authors conducted a pen-and-paper survey among food businesses to collect data and used a generalized ordered logit regression model to analyse them.

The results show that the higher the businesses assess the possible negative effects of a negative smiley on sales, the higher the probability of compliance. Considering the immaterial behavioural drivers (protective factors) the authors find the statistical significant influence of a feeling of embarrassment in case of disclosure and the feeling of a fair evaluation on compliance. Thus, the study supports the expectation that disclosure policies affect behavioural drivers and have the potential to steer food businesses’ compliance.

The study supports the expectation that hygiene controls’ disclosure positively affects food businesses’ compliance. These findings should be taken into consideration in the ongoing discussion about disclosure. Nowadays, there is no mandatory transparency in Germany due to a strong opposition from businesses and their lobbying groups.

The authors conducted a pen-and-paper survey among food businesses in three urban districts of the German capital Berlin, namely, Pankow, Lichtenberg and Marzahn-Hellersdorf in 2014. The food authorities in these districts were the only ones in Germany that had introduced and run a mandatory disclosure system (smiley-system) for food businesses. The results of the inspections were published on the authorities’ homepages in the internet, and were displayed in businesses. Thus the data mirror the unique experiences of the only German food businesses that participated in a mandatory transparency scheme.

Food safety risk brought by environmental pollution seriously threatens human health and affects national economic and social development. In particular, heavy metal pollution and nutrient deficiency have caused regional diseases. Thus, the purpose of this paper is to present a risk early warning method of food safety considering environmental and nutritional factors.

A novel risk early warning modelling method based on the long short-term memory (LSTM) neural network integrating sum product based analytic hierarchy process (AHP-SP) is proposed. The data fuzzification method is adopted to overcome the uncertainty of food safety detection data and the processed data are viewed as the input of the LSTM. The AHP-SP method is used to fuse the risk of detection data and the obtained risk values are viewed as the expected output of the LSTM. Finally, the proposed method is applied on one group of sterilized milk data from a food detection agency in China.

The experimental results show that compared with the back propagation and the radial basis function neural networks, the proposed method has higher accuracy in predicting the development trend of food safety risk. Moreover, the causal factors of the risk can be figured out through the predicted results.

The proposed modelling method can achieve accurate prediction and early warning of food safety risk, and provide decision-making basis for the relevant departments to formulate targeted risk prevention and control measures, thereby avoiding food safety incidents caused by environmental pollution or nutritional deficiency.

The purpose of this paper is to compare the development dynamics of two business networks initially created to promote the internationalization of its members. Wines of Brasil – a Brazilian wineries network – was established in 2002 and remains active, while Vitrocristal (VtC) – a Portuguese network of glass producers – was established in 1994 and is already closed.

Data were collected from 14 interviews, with network managers and representatives of companies with different sizes and participation times. Information obtained was compared with the life cycle model of Wegner et al. (2015) and enabled the authors to understand the dynamic development of each network and its current stage in the life cycle.

The results allowed the authors to describe the development pattern of both business networks, showing that the Brazilian network is in the consolidation stage while the Portuguese one finished its activities in 2007 after a period of financial constraints due to the end of governmental support.

The comparison of the two cases shows that the experience of the Portuguese business network may be useful for networks in emerging markets, as it displays several difficulties that the management of such networks may face during their life cycle.

This study provides a more comprehensive and nuanced understanding of the dynamics of change in business networks. The cases confirm the life cycle stages proposed by Wegner et al. (2015) and shed more light on the development process of business networks, by describing how exogenous variables such as public support may affect cooperation.

Glam metal of the 1980s represented a notable development in popular music at this time. A subgenre of 1980s heavy metal, glam metal combined elements of late 1960s and 1970s heavy rock, glam rock and punk rock, enriching both the visual and aural aesthetic diversity of 1980s heavy metal as a result. Moreover, 1980s glam metal bands such as Guns N’ Roses and Poison, Cinderella and Mötley Crüe, Ratt and Warrant, dominated the music video airwaves and sold out venues across the United States. Yet, for all its comparative individuality and widespread popularity, the vast majority of mainstream glam metal bands were marginalised by social action groups mainly, but not exclusively, because of misogynist-type themes that the bands represented in their aesthetics.

During the 1990s, scholars began scrutinising 1980s glam metal’s misogynist aesthetics, for example, Lisa Sloat’s (1998) analysis of glam metal’s sexist and misogynist themed song lyrics concludes that, ‘if exploiting women for sex sells, [glam metal] musicians will [continue] record[ing] songs which do so’ (Sloat, 1998, p. 299). Yet none of these accounts seem to be able to sufficiently unpack the idea that 1980s glam metal’s representation of misogyny was anything other than fundamentally egregious. An alternative reading of the aesthetics shows us how many of the bands creatively appropriated misogyny to idiomatically hallmark metal glam, thus differentiating the style from the broadly homogenous displays of machismo that generally defined the aesthetics of other 1980s heavy metal subgenres. In response then, this chapter should be thought of as a doctrine provactive, intended to elicit a debate about the need to look alternatively at how misogyny is/was used as an artistic aesthetic device, not only in 1980s glam metal, but throughout culture more widely.