25 results on '"Nigel Skinner"'
Search Results
2. Highly Versatile Cloud-Based Automation Solution for the Remote Design and Execution of Experiment Protocols during the COVID-19 Pandemic
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Piero Zucchelli, Nigel Skinner, and Giorgio Horak
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0301 basic medicine ,COVID-19 Vaccines ,cloud-based laboratory software ,Computer science ,Cloud computing ,03 medical and health sciences ,0302 clinical medicine ,Software ,COVID-19 Testing ,pipetting robot ,Humans ,connected lab ,Pandemics ,Original Research ,Automation, Laboratory ,business.industry ,SARS-CoV-2 ,Level of detail (writing) ,COVID-19 ,Modular design ,Cloud Computing ,Private sector ,Automation ,Data science ,Computer Science Applications ,Medical Laboratory Technology ,030104 developmental biology ,Workflow ,Software deployment ,Research Design ,lab automation ,business ,030217 neurology & neurosurgery - Abstract
There is an urgent need to accelerate the development and validation of both diagnostics and vaccines for COVID-19. These priorities are challenging both public and private sector research groups around the world and have shone a spotlight on both existing bottlenecks in the research workflows involved as well as on the implications of having to do much of this work remotely because of enforced social distancing and lockdown measures. The ability to respond quickly to rapidly evolving events, coupled with an emerging understanding of the disease and its pathology, as well as different mutations of the virus, necessitates a highly flexible liquid-handling automation solution that is amenable to rapid switching between different assay workflows and processes to be exploited tactically as needed. In addition, the use of cloud-based software imparts a unique benefit in enabling multiple research groups and remote technical staff around the world to have ready access to the same protocols in real-time without delays, down to the required level of detail, sharing methods and data (for example, in faster clinical trials). Informed by a recent use case, this article explores these issues alongside the recent development and deployment of an automation solution, whose unique approach in terms of both its cloud-native software and its highly modular hardware aligns especially well with achieving the challenge set by this new frontier in the bioanalytical laboratory.
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- 2020
3. An action research study into the role of student negotiation in enhancing perceived student engagement during English speaking classes at university level in Turkey
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Mehmet Sercan Uztosun, Nigel Skinner, and Jill Cadorath
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060201 languages & linguistics ,Teaching method ,Multimethodology ,media_common.quotation_subject ,05 social sciences ,050301 education ,Student engagement ,06 humanities and the arts ,Education ,Negotiation ,Content analysis ,0602 languages and literature ,Pedagogy ,ComputingMilieux_COMPUTERSANDEDUCATION ,Mathematics education ,Action research ,Willingness to communicate ,Psychology ,0503 education ,media_common ,Qualitative research - Abstract
A major issue in English language teaching in Turkey and other monolingual countries is the teaching of spoken English. This article reports the initial and final stages of an action research study which used student negotiation to enhance student engagement in speaking classes. The research was conducted in the English Language Teaching Department of a university in Turkey and involved the provision of student-negotiated speaking classes for one term during which qualitative and quantitative data collected from students through questionnaires on a weekly basis informed the design of the speaking activities. The results of content analysis and Wilcoxon signed-rank tests showed that student negotiation promoted student engagement through providing speaking classes appropriate to students’ needs and interests, which resulted in more positive perceived speaking ability and greater willingness to communicate. This study demonstrates the significance of student negotiation in speaking classes and has i...
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- 2017
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4. Investigating and Promoting Trainee Science Teachers’ Conceptual Change of the Nature of Science with Digital Dialogue Games ‘InterLoc’
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Nigel Skinner, Keith Postlethwaite, Lindsay Hetherington, Rupert Wegerif, and Nasser Mansour
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Cooperative learning ,05 social sciences ,050301 education ,Nature of Science ,Collaborative learning ,02 engineering and technology ,Conceptual change ,Science education ,Experiential learning ,Education ,Pedagogy ,0202 electrical engineering, electronic engineering, information engineering ,Mathematics education ,020201 artificial intelligence & image processing ,Attitude change ,Computer-mediated communication ,Psychology ,0503 education - Abstract
The purpose of this study is to explore how an online-structured dialogue environment supported (OSDE) collaborative learning about the nature of science among a group of trainee science teachers in the UK. The software used (InterLoc) is a linear text-based tool, designed to support structured argumentation with openers and ‘dialogue moves’. A design-based research approach was used to investigate multiple sessions using InterLoc with 65 trainee science teachers. Five participants who showed differential conceptual change in terms of their Nature of Science (NOS) views were purposively selected and closely followed throughout the study by using key event recall interviews. Initially, the majority of participants held naive views of NOS. Substantial and favourable changes in these views were evident as a result of the OSDE. An examination of the development of the five participants’ NOS views indicated that the effectiveness of the InterLoc discussions was mediated by cultural, cognitive, and experiential factors. The findings suggest that InterLoc can be effective in promoting reflection and conceptual change.
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- 2016
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5. Global patterns in students' views of science and interest in science
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Ralf A. L. F. van Griethuijsen, Perry den Brok, Ayse Savran Gencer, Saouma BouJaoude, Nigel Skinner, Nasser Mansour, Helen Haste, Michiel van Eijck, and Department of Human Resource Studies
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Large-scale studies ,International studies ,media_common.quotation_subject ,Interest in science ,TEACHERS CONCEPTIONS ,Nature of science ,Science education ,Education ,Comparisons ,Pedagogy ,media_common.cataloged_instance ,Sociology ,ATTITUDES ,Social science ,Science, technology, society and environment education ,European union ,Empiricism ,media_common ,EPISTEMOLOGICAL BELIEFS ,International ,Nature of Science ,Social science education ,Comparative education ,Diversity (politics) - Abstract
International studies have shown that interest in science and technology among primary and secondary school students in Western European countries is low and seems to be decreasing. In many countries outside Europe, and especially in developing countries, interest in science and technology remains strong. As part of the large-scale European Union funded ‘Science Education for Diversity’ project, a questionnaire probing potential reasons for this difference was completed by students in the UK, Netherlands, Turkey, Lebanon, India and Malaysia. This questionnaire sought information about favourite courses, extracurricular activities and views on the nature of science. Over 9,000 students aged mainly between 10 and 14 years completed the questionnaire. Results revealed that students in countries outside Western Europe showed a greater interest in school science, in careers related to science and in extracurricular activities related to science than didWestern European students. Non-European studentswere also more likely to hold an empiricist viewof the nature of science and to believe that science can solve many problems faced by the world. Multilevel analysis revealed a strong correlation between interest in science and having such a view of the Nature of Science. © Springer Science+Business Media Dordrecht 2014.
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- 2015
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6. Educating New Secondary School Physics Teachers
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Nigel Skinner and Keith Postlethwaite
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Government ,Medical education ,Education theory ,05 social sciences ,050301 education ,Subject (documents) ,Certificate ,Teacher education ,Secondary sector of the economy ,Mathematics education ,0501 psychology and cognitive sciences ,0503 education ,050104 developmental & child psychology ,Educational systems - Abstract
In terms of structure, initial teacher education (ITE) in England is complex. Most new teachers who intend to work in the secondary sector (teaching 11–18 year old students) have obtained a first degree in their specialist subject or a closely aligned subject. They then follow a one year Postgraduate Certificate of Education (PGCE) course which provides insight into educational theory, into the range of effective ways of teaching key concepts in their subject, into non-subject-specific aspects of the role of the teacher, and into educational systems and current government initiatives in education.
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- 2017
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7. An action research study designed to implement student negotiation to improve speaking classroom practice in Turkey
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Mehmet Sercan Uztosun, Nigel Skinner, and Jill Cadorath
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Instructional design ,media_common.quotation_subject ,education ,Psychological intervention ,Participative decision-making ,Education ,Negotiation ,Feeling ,Action (philosophy) ,Pedagogy ,Mathematics education ,Action research ,Group work ,Psychology ,media_common - Abstract
This paper reports the second stage of an action research study designed to improve the effectiveness of speaking classes through negotiating the lesson contents with students. The data were collected through interviews, questionnaires and observations as a way of eliciting students’ views. The research, conducted in an English language teaching department at a university in Turkey, comprised eight weekly-based interventions that involved planning, action, observation, and reflection, in which students were given a voice and classroom activities were designed accordingly. Student negotiation allowed for the identification of both structural and affective factors influencing the quality of speaking classes. The teacher’s roles in activities, the number of students in group work activities, the level of control in speaking activities, and the role of input were found to be issues worth considering in designing speaking classes. Issues such as finding the activity ‘interesting’ and ‘useful’, ‘feeling comfort...
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- 2014
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8. Systems toxicology
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Thomas, Hartung, Erwin, van Vliet, Joanna, Jaworska, Leo, Bonilla, Nigel, Skinner, and Russell, Thomas
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Proteomics ,Pharmacology ,Databases, Factual ,Systems Biology ,Computational Biology ,Cosmetics ,General Medicine ,Animal Testing Alternatives ,Toxicology ,Medical Laboratory Technology ,Gene Expression Regulation ,Pharmaceutical Preparations ,Chemical Industry ,Animals ,Humans ,Agrochemicals ,Transcriptome - Abstract
The need for a more mechanistic understanding of the ways in which chemicals modulate biological pathways is urgent if we are to identify and better assess safety issues relating to a wide range of substances developed by the pharmaceutical, chemical, agri-bio, and cosmetic industries. Omics technologies provide a valuable opportunity to refine existing methods and provide information for so-called integrated testing strategies via the creation of signatures of toxicity. By mapping these signatures to underlying pathways of toxicity, some of which have been identified by toxicologists over the last few decades, and bringing them together with pathway information determined from biochemistry and molecular biology, a "systems toxicology" approach will enable virtual experiments to be conducted that can improve the prediction of hazard and the assessment of compound toxicity.
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- 2012
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9. Developing a curriculum for initial teacher education using a situated learning perspective
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Nigel Skinner
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Craft ,Situated learning ,Cultural diversity ,Pedagogy ,Situated ,ComputingMilieux_COMPUTERSANDEDUCATION ,Curriculum development ,Context (language use) ,Sociology ,Curriculum ,Teacher education ,Education - Abstract
This paper argues that the implications of the concept of situated learning are important when developing a curriculum for initial teacher education (ITE). It describes and analyses the use of a model of ITE designed to stimulate discussions promoting the development of professional craft knowledge situated mainly in schools and to connect these with a wider research‐based understanding of educational issues situated mainly in the context of university departments. Findings from a study of trainee teachers following a one‐year postgraduate ITE programme based on this model indicate that it did help trainees to develop professional craft knowledge. However, socio‐cultural differences between the school and university contexts made it difficult for trainees to translate ideas introduced in the university into their school‐based practice. The implications of these findings for developing the model and for ITE in general are discussed.
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- 2010
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10. Creating a model to examine motivation for sustained engagement in online communities
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Keith Postlethwaite, Nigel Skinner, and Kathy Seddon
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Knowledge management ,Group interview ,Online participation ,business.industry ,Applied psychology ,Theoretical models ,Educational technology ,Library and Information Sciences ,Online community ,Education ,Sustainability ,business ,Psychology ,Research data - Abstract
This paper considers factors that influenced long-term engagement in an online community. It draws on a case study of a 6 year online collaboration amongst a group of European teachers. The email interchange between these teachers was, with their agreement, saved and used as research data; intensive group interviews were also conducted, involving all the participants in the online group. Dynamic motivation models and Csikszentmihalyi's concept of motivational flow were used to create a theoretical framework to analyse the email interchanges and group interview data so as to build an understanding of the teachers' commitment to the online community. As a result of the analysis, the existing theoretical models were modified to produce a new combined model. This incorporates ideas grounded in the participants' reasons for their sustained engagement in the collaboration. This combined model could provide a basis for planning future virtual interactions and for assessing their sustainability.
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- 2007
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11. 3D-DIP-Chip: a microarray-based method to measure genomic DNA damage
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Richard Webster, Mark Bennett, Raymond Waters, Katie Ellen Evans, Nigel Skinner, Shirong Yu, Simon H. Reed, and James Powell
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Genome instability ,Genetics ,Multidisciplinary ,DNA Repair ,DNA damage ,DNA repair ,Context (language use) ,Acetylation ,Epigenome ,Biology ,medicine.disease_cause ,R1 ,Genomic Instability ,Article ,Histones ,genomic DNA ,Histone ,biology.protein ,medicine ,Humans ,Protein Processing, Post-Translational ,Genotoxicity ,DNA Damage ,Mutagens ,Oligonucleotide Array Sequence Analysis - Abstract
Genotoxins cause DNA damage, which can result in genomic instability. The genetic changes induced have far-reaching consequences, often leading to diseases such as cancer. A wide range of genotoxins exists, including radiations and chemicals found naturally in the environment, and in man-made forms created by human activity across a variety of industries. Genomic technologies offer the possibility of unravelling the mechanisms of genotoxicity, including the repair of genetic damage, enhancing our ability to develop, test and safely use existing and novel materials. We have developed 3D-DIP-Chip, a microarray-based method to measure the prevalence of genomic genotoxin-induced DNA damage. We demonstrate the measurement of both physical and chemical induced DNA damage spectra, integrating the analysis of these with the associated changes in histone acetylation induced in the epigenome. We discuss the application of the method in the context of basic and translational sciences.
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- 2015
12. The Socio-Cultural Contexts of Science Curriculum Reform in the State of Kuwait
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Ahmad S. Alshammari, Nigel Skinner, and Nasser Mansour
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State (polity) ,media_common.quotation_subject ,Political science ,Pedagogy ,Mathematics education ,Christian ministry ,Science curriculum ,Curriculum ,media_common - Abstract
In 2008 the Ministry of Education (MoE) in Kuwait began the reform of the science curriculum in schools at all academic stages: primary (grades 1–5), intermediate (6–9) and secondary (10–12). The new science curriculum was adapted from an original curriculum which was designed and published by the US company Pearson-Scott Foreman.
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- 2015
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13. RESEARCH REPORT
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Nigel Skinner, Peter F. W. Preece, Keith A. Simpson, and Keith Postlethwaite
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Salience (language) ,education ,ComputingMilieux_COMPUTERSANDEDUCATION ,Mathematics education ,Content knowledge ,Psychology ,Teacher education ,Education ,Certificate in Education ,Learning effect ,Test (assessment) - Abstract
In an investigation of the learning of science content knowledge in a postgraduate preservice education course, it was found that the ‘failure of further learning’ effect can be overcome, at least in part, in well‐designed courses. Nevertheless the persistence of certain misconceptions among some students did indicate the partial salience of the effect in Postgraduate Certificate in Education science courses. Although the students' confidence in their knowledge of various topics, as indicated in self‐audits, was positively related to their actual knowledge as displayed in their test answers, the relationship between confidence and knowledge was not strong, particularly for the biology topics.
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- 2004
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14. The use of information and communications technology to support the teaching of science in primary schools
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Nigel Skinner and Peter F. W. Preece
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Medical education ,business.industry ,Teaching method ,Primary education ,Educational technology ,Science education ,Education ,Information and Communications Technology ,Concept learning ,Pedagogy ,ComputingMilieux_COMPUTERSANDEDUCATION ,The Internet ,Telematics ,Psychology ,business - Abstract
The AstraZeneca-Exeter Science through Telematics (AZEST) project provided evidence that the Internet has much potential as a communication channel for the provision and discussion of INSET materials for primary science in the UK. Participating teachers were able to access and use the project website effectively, were more likely to provide feedback when they had personal access to the Internet either at home or at school, and provided valuable feedback concerning the AZEST tasks, but they tended not to respond directly to messages from other participants. Discussion, via e-mail or a web-based discussion forum, was enhanced if participants knew each other personally. There was evidence that the AZEST science INSET materials enhanced teachers' understanding of science concepts and raised their confidence, increased teachers' effectiveness in the role of Science Subject Leader, and improved teachers' pedagogic practice through encouraging innovative investigative approaches to the teaching and learning of s...
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- 2003
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15. Innovating science teacher education: a history and philosophy of science perspective
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Nigel Skinner
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Philosophy of computer science ,History and philosophy of science ,Pedagogy ,Sociology ,Social science education ,Philosophy of Education Society of Great Britain ,Science, technology, society and environment education ,Philosophy education ,Science education ,Teacher education ,Education - Abstract
by Mansoor Niaz, 2011, New York and Oxford, Routledge, 228 pp., £26.99 (pbk), ISBN 978-0-415-88238-5 Innovating science teacher education brings together 10 papers written by Mansoor Niaz over the ...
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- 2011
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16. The gender gap and discriminating power in the National Curriculum Key Stage three science assessments in England and Wales
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Robin A. H. Riall, Peter F. W. Preece, and Nigel Skinner
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Grande bretagne ,Power (social and political) ,Secondary education ,education ,Sociology ,National curriculum ,Gender gap ,Science education ,Education ,Key (music) ,Large sample ,Demography - Abstract
Data from a large sample of year 9(13-14years) students taking the national Key Stage 3 science tests in England and Wales were used to explore gender differences in science achievement. The most pronounced gender differences, which were in favour of males, were found in the higher level papers taken by more able students, with the largest gender gaps occurring in physics questions. Using separate male and female discrimination indices, it was found that the more discriminating questions tended to exhibit larger gender gaps in favour of males.
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- 1999
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17. The National Assessment in Science at Key Stage 3 in England and Wales and its Impact on Teaching and Learning
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Peter F. W. Preece and Nigel Skinner
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Education reform ,Interpretation (philosophy) ,Pedagogy ,Key (cryptography) ,Science teachers ,National curriculum ,Psychology ,Education - Abstract
The development of a framework for the content and assessment of National Curriculum science in England and Wales, following the 1988 Education Reform Act, is described, with a particular emphasis on assessment at the end of Key Stage 3 (14-year-old pupils). The University of Exeter evaluations of Key Stage 3 science assessments in 1995 and 1996 are outlined and the findings concerning the reliability and validity of the testing are presented. The views of science teachers on the impact of this assessment on teaching and learning are summarised, with particular reference to the structure, delivery and interpretation of the National Curriculum, the setting of pupils, continuity and progression, the preparation of pupils for the tests and teacher assessment.
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- 1999
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18. Functional genome-wide analysis: a technical review, its developments and its relevance to cancer research
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Mark Bennett, James Powell, Raymond Waters, Simon H. Reed, and Nigel Skinner
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Chromatin Immunoprecipitation ,Genome, Human ,Genome wide analysis ,Chromosome Mapping ,Genomics ,Context (language use) ,General Medicine ,Biology ,Genome ,Chromatin ,Epigenesis, Genetic ,Patents as Topic ,Neoplasms ,Cancer research ,Humans ,Relevance (information retrieval) ,Epigenetics ,Molecular Biology ,Chromatin immunoprecipitation ,Genetics (clinical) ,Biotechnology ,Oligonucleotide Array Sequence Analysis - Abstract
A technique has emerged over the past decade combining chromatin immunoprecipitation with DNA microarray analysis. This is a powerful and sensitive strategy that has been used extensively to characterise protein interactions with chromatin and epigenetic changes such as acetylation and methylation throughout the genome of different organisms. This technique has revolutionised our understanding of molecular genomics, continues to be widely used and is currently being applied in novel areas of cancer research. In this publication we review the historical context of this technology and offer current and future perspectives on how this technique is currently being developed and modified to allow its use in novel areas of research. We discuss the potential for this technique and its ongoing important role in biological research particularly in relation to cancer research. We also offer insight into the potential clinical application of this technology in stratified medicine, particularly in the field of cancer therapy.
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- 2013
19. Dialogic Science Education for Diversity
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Nigel Skinner, Lindsay Hetherington, Alun Morgan, Rupert Wegerif, Keith Postlethwaite, and Nasser Mansour
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Dialogic ,Argument ,media_common.quotation_subject ,Political science ,Pedagogy ,ComputingMilieux_COMPUTERSANDEDUCATION ,Nature of Science ,Context (language use) ,Quality (business) ,European commission ,Science education ,Diversity (politics) ,media_common - Abstract
This chapter argues that a dialogic understanding of the nature of science should lead to a dialogic approach to science education. This argument is combined with a description of a dialogic approach to science education developed in the context of a large European Commission funded international project called ‘science education for diversity’. The project surveyed school students aged 10–14 and their teachers in Malaysia, India, Lebanon, Turkey, the Netherlands and the UK and developed a framework for the design of education in the context of diversity in science education. This approach to education is called ‘dialogic’ both because it is about responding to the diverse voices of students without prejudging the nature of that diversity and because it is about teaching for dialogue, where the quality of dialogue is understood as being central to science.
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- 2013
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20. The timing of life: recent developments in our understanding of the genetic basis of circadian rhythms
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Nigel Skinner
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Evolutionary biology ,Zoology ,Clockwork ,Circadian rhythm ,Biology ,General Agricultural and Biological Sciences ,Education - Abstract
Recent advances in genetic engineering techniques have provided researchers with new tools for investigating circadian rhythms. Much is now known about the molecular genetics of rhythms. As a consequence, researchers are beginning to understand the biochemical ‘clockwork’ which underlies these rhythms. Some of the most exciting recent discoveries are outlined in this paper.
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- 1995
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21. A roadmap for the development of alternative (non-animal) methods for systemic toxicity testing
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Grace Patlewicz, James D. Yager, Marcel Leist, Sebastian Hoffmann, Kerstin Trentz, James M. McKim, Andreas Schepky, Joanna Jaworska, Greet Schoeters, Emily A. McVey, Joanne Zurlo, Bas J. Blaauboer, Nigel Skinner, Thomas B. Knudsen, Paul A. Locke, Ian Kimber, Irmela Ruhdel, Annamaria Rossi, Marian Turner, Michael Schwarz, Costanza Rovida, Robert Landsiedel, Mardas Daneshian, Gladys Ouedraogo, Alan M. Goldberg, Robert Burrier, Nina Hasiwa, Harvey J. Clewell, Olavi Pelkonen, Gavin Maxwell, Thomas Hartung, Erwin Ludo Roggen, Philippe Vanparys, Chantra Eskes, and David A. Basketter
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Animal Experimentation ,Context (language use) ,Cosmetics ,Animal Testing Alternatives ,Animal Welfare ,03 medical and health sciences ,0302 clinical medicine ,ddc:570 ,Toxicity Tests ,Medicine ,Regulatory science ,Predictive testing ,030304 developmental biology ,Pharmacology ,0303 health sciences ,Animal Welfare (journal) ,business.industry ,Skin sensitization ,General Medicine ,Legislation, Drug ,3. Good health ,Biotechnology ,Europe ,Medical Laboratory Technology ,Systemic toxicity ,Risk analysis (engineering) ,030220 oncology & carcinogenesis ,business ,Reproductive toxicity ,Risk assessment - Abstract
Systemic toxicity testing forms the cornerstone for the safety evaluation of substances. Pressures to move from traditional animal models to novel technologies arise from various concerns, including: the need to evaluate large numbers of previously untested chemicals and new products (such as nanoparticles or cell therapies), the limited predictivity of traditional tests for human health effects, duration and costs of current approaches, and animal welfare considerations. The latter holds especially true in the context of the scheduled 2013 marketing ban on cosmetic ingredients tested for systemic toxicity. Based on a major analysis of the status of alternative methods (Adler et al., 2011) and its independent review (Hartung et al., 2011), the present report proposes a roadmap for how to overcome the acknowledged scientific gaps for the full replacement of systemic toxicity testing using animals. Five whitepapers were commissioned addressing toxicokinetics, skin sensitization, repeated-dose toxicity, carcinogenicity, and reproductive toxicity testing. An expert workshop of 35 participants from Europe and the US discussed and refined these whitepapers, which were subsequently compiled to form the present report. By prioritizing the many options to move the field forward, the expert group hopes to advance regulatory science.
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- 2012
22. Abstract 3753: An integrated approach to identify functional signaling modules in retinoblastoma cancer progression
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Arunkumar Padmanabhan, Deepak Sa, Syed Lateef, Vishnu Suresh Babu, Ashwin Mallipatna, Arkasubhra Ghosh, Carolina B. Livi, Seetaraman Gundimeda, Arun Sreekumar, Nigel Skinner, and Nilanjan Guha
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Cancer Research ,Retinoblastoma ,Cancer ,Biology ,Cell cycle ,Bioinformatics ,medicine.disease ,Metastasis ,Transcriptome ,Metabolomics ,Oncology ,microRNA ,Cancer research ,medicine ,DNA microarray - Abstract
This study illustrates a multi-omics approach combining transcriptomics and metabolomics datasets to study molecular events leading to progression of retinoblastoma. Retinoblastoma is a pediatric ocular cancer affecting children usually less than five years of age. It is a complex disease predisposed primarily by biallelic inactivating mutations in the RB1 gene. This gene has essential roles in cell cycle, differentiation, chromosome stability and is implicated in other functions. From a cohort of 9 patients undergoing enucleation of the affected eyes, we obtained tumor, aqueous humor, vitreous humor and tear samples. We obtained retina, aqueous humor and vitreous humor from enucleated eyes of 2 deceased pediatric controls, whose cause of death is not due to any eye related disease. The patients comprise of both high and low clinical and pathological risks. In the first stage of the study, we performed mRNA and miRNA gene expression using microarrays followed by pathway analysis to identify gene enrichment that would enable functional characterization of tumors. Differential expression analysis was carried out using moderated t-test with Benjamini Hochberg multiple testing correction. 108 (p≤0.05, fold change≥10) genes were found to be unique to patients possessing high risk of metastasis. Pathway analysis revealed key pathways that are known to be involved in the progression of retinoblastoma including cell cycle and Rap1 signaling pathway. Many of these responders were verified by RT-PCR and corroborated by immuno histochemistry studies. The study also revealed 18 novel miRNAs which had not been previously implicated in the disease, with a significant overlap of the miRNA target list with our mRNA expression data set. Metabolomics studies were performed using monophasic solvent extraction of aqueous, vitreous and tear samples. The extracted metabolites were analyzed on Accurate Mass QTOF mass spectrometer in positive and negative mode on a reverse phase C18 and HILIC columns. Data dependent MS/MS analysis was performed to confirm the compounds. Pathway analysis of the differentially expressed metabolites revealed enrichment of several pathways, including nucleotide metabolism and amino acids among others. Combined pathway analysis of metabolomics and transcriptomics data was performed in order to gain an understanding of the interrelationship between changes in gene expression and metabolomic profile. The results show overlap of key cellular pathways which can be mechanistically linked to disease progression. The study provide new biological insights that are made accessible by combining data from different biological and biochemical domains with a comprehensive integrated method. The information is useful not only to correlate expression markers with disease mechanism but also to better predict appropriate chemotherapy regimens and identify new mechanisms to treat even advanced stages of retinoblastoma. Citation Format: Nilanjan Guha, Deepak SA, Syed Lateef, Seetaraman Gundimeda, Arunkumar Padmanabhan, Carolina B Livi, Nigel Skinner, Arkasubhra Ghosh, Ashwin Mallipatna, Vishnu Suresh Babu, Arun Sreekumar. An integrated approach to identify functional signaling modules in retinoblastoma cancer progression. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3753. doi:10.1158/1538-7445.AM2015-3753
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- 2015
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23. Overall Conclusions
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Nigel Skinner and Robert Landsiedel
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- 2006
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24. Metabolomics in Toxicology and Preclinical Research
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Mark Seymour, Bennard van Ravenzwaay, Harald Jungnickel, Elwin Verheij, Steven M. Fischer, Joachim Heuer, Mardas Daneshian, Beth Donley, Muireann Coen, Eric Fabian, Malcolm R. Clench, Silvia Wagner, Hennicke Kamp, Nigel Skinner, Tzutzuy Ramirez, Helena T. Hogberg, Bjoern Riefke, Hector C. Keun, Eckart Krupp, Marcel Leist, Claude Guillou, Thomas Hartung, Frédéric Y. Bois, G. Krennrich, Erik Peter, Lena Smirnova, Drew R. Ekman, Fozia Noor, Andreas Luch, and Medical Research Council (MRC)
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regulatory toxicology ,BIOMARKERS ,Context (language use) ,Biology ,Research & Experimental Medicine ,METABOLISM ,Appropriate use ,Toxicology ,Models, Biological ,Article ,CELL-CULTURE PRACTICE ,03 medical and health sciences ,Preclinical research ,Human health ,Metabolomics ,FOOD ,Predictive Value of Tests ,07 Agricultural and Veterinary Sciences ,Toxicity Tests ,Animals ,Humans ,preclinical research ,11 Medical and Health Sciences ,030304 developmental biology ,Pharmacology ,0303 health sciences ,Systems toxicology ,Science & Technology ,030302 biochemistry & molecular biology ,SYSTEMS TOXICOLOGY ,Reproducibility of Results ,General Medicine ,IN-VITRO ,THOUGHT ,Omics ,DEVELOPMENTAL TOXICITY ,3. Good health ,Medical Laboratory Technology ,Medicine, Research & Experimental ,MODEL SYSTEM ,Life Sciences & Biomedicine ,Target organ ,TASK-FORCE - Abstract
Metabolomics, the comprehensive analysis of metabolites in a biological system, provides detailed information about the biochemical/physiological status of a biological system, and about the changes caused by chemicals. Metabolomics analysis is used in many fields, ranging from the analysis of the physiological status of genetically modified organisms in safety science to the evaluation of human health conditions. In toxicology, metabolomics is the -omics discipline that is most closely related to classical knowledge of disturbed biochemical pathways. It allows rapid identification of the potential targets of a hazardous compound. It can give information on target organs and often can help to improve our understanding regarding the mode-of-action of a given compound. Such insights aid the discovery of biomarkers that either indicate pathophysiological conditions or help the monitoring of the efficacy of drug therapies. The first toxicological applications of metabolomics were for mechanistic research, but different ways to use the technology in a regulatory context are being explored. Ideally, further progress in that direction will position the metabolomics approach to address the challenges of toxicology of the 21st century. To address these issues, scientists from academia, industry, and regulatory bodies came together in a workshop to discuss the current status of applied metabolomics and its potential in the safety assessment of compounds. We report here on the conclusions of three working groups addressing questions regarding 1) metabolomics for in vitro studies 2) the appropriate use of metabolomics in systems toxicology, and 3) use of metabolomics in a regulatory context.
25. A socio-cultural investigation of science curriculum reform and implementation in Kuwait : perspectives of teachers, students and curriculum reformers
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Alshammari, Ahmad Shallal and Nigel, Skinner
- Subjects
370 ,science curriculum ,curriculum reform ,social cultural - Abstract
In 2008 the Ministry of Education in Kuwait began to reform the science curriculum in schools at all academic stages: primary (grades 1-5), intermediate (6-9) and secondary (10-12). The new science curriculum was adapted from an original curriculum which had been designed and published by the Amercan company Pearson-Scott Foreman. This study explores the perspectives of science teachers and students concerning the new science curriculum for the sixth and seventh grades (students aged 11 to 15) in the State of Kuwait. The study also investigated the process of the reform and the roles that science teachers and students performed in this reform process. The study used Sociocultural Theory as a framework to examine the science curriculum reform process and to discuss findings. A multi-method design was used with both quantitative and qualitative methods to collect the data: science teachers’ and students’ questionnaires; interviews with science teachers, students and science curriculum reformers; and classroom observations. The study sample was selected randomly. The questionnaire was conducted with 310 science teachers and 647 students. 11 science teachers, nine reformers and 30 students (five in each of six focus groups) were chosen to conduct in-depth interviews. Ten classroom observations were conducted with four science teachers. The study indicated that the science curriculum reform process was controlled centrally by the Ministry of Education and teachers and students did not participate in any stage of the reform process. The findings also found that many of the science teachers and students held negative views about the new science curriculum. They felt that the content of the new curriculum does not relate very well to Kuwaiti culture, to the Islamic religion and that the curriculum objectives needed to be more clear and achievable. The findings showed that many of the students indicated that they have difficulty understanding much of the content and did not enjoy studying science. Most of the teachers indicated that they faced challenges in teaching the new science curriculum. These included a lack of instructional tools, lack of teacher autonomy, the amount of material that needed covering and large class sizes. This study recommends reviewing the new science curriculum (now currently in use) taking into account the perspectives of teachers and students. It recommends that in carrying out curriculum reform the Ministry of Education be encouraged to provide guidance in the form of instructional tools and professional development programmes for teachers. These should be designed to help teachers develop the pedagogic skills needed to address the complex relationships between science and culture and between science and religion.
- Published
- 2014
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