scholarly journals Active Learning Strategies and Competency-Based Design in Research Education: a Longitudinal Review

Author(s):  
Noela A. Haughton

This paper describes the long-term re-development of an introductory graduate research methods course. The initial design is presented, followed by the two re-design phases. Phase 2 introduced additional inquiry-based strategies such as concept mapping and multiple levels of peer collaboration. Phase 3 incorporated competency-based techniques as well as additional technical, social, and instructional support. Assessment results, student feedback, moderate to strong relationships between scores on key assessments, and design principles support the assertion that the Phase 3 course is an improvement over the Phase 1 version. Limitations and further research are presented.

IAWA Journal ◽  
2003 ◽  
Vol 24 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Sabine Rosner ◽  
Birgit Kartusch

Seasonal production of lenticel tissues was compared between Norway spruce trees (Picea abies (L.) Karst.) from a mountain site (1200 m), where they are autochthonous, and seven allochthonous lowland sites (250–600 m).The periodic changes of lenticel structure were grouped into four stages, based on the degree of their opening: phase 1 - winter dormancy; phase 2 - beginning of meristem activity in spring; phase 3 - production of non-suberised filling tissue in early summer, which causes the disruption of the closing layer formed in the previous growing season; and phase 4 - differentiation of a new closing layer in late summer. Structural changes in lenticels of P. abies may be interpreted as a long-term reaction to climatic conditions, balancing transpiration and respiration. During the most active period of wood production, lenticels were found in their most permeable phase, phase 3. The production of a new closing layer takes place when summer temperatures reach maximum values, and when demand for effective regulation of transpiration is high. During phase 4 transpiration is successfully controlled because differentiating cells of the new closing layer are already suberised, although not in their final rounded shape, and therefore have small intercellular spaces. High annual variability in stratification of lenticel tissues, such as the proportion between closing layer and filling tissue, wall thickening and size of intercellular spaces, also indicates possible long-term regulation mechanisms for transpiration.


2021 ◽  
Vol 29 ◽  
pp. S253-S254
Author(s):  
D. Hunter ◽  
A. Mobasheri ◽  
S. Mareya ◽  
M. Wang ◽  
H. Choi ◽  
...  
Keyword(s):  
Phase 1 ◽  
Phase 2 ◽  
Phase 3 ◽  

2021 ◽  
Author(s):  
◽  
Jemma Christina Simeon

<p>Research on language learning strategies (LLS) suggests that LLS are indispensable to helping second language learners learn English (Oxford, Crookall et al. 2008). However, most research studies to date have been experimental and have focused on listing certain aspects of learners' strategy use. By contrast, I have taken a sociocultural approach and carried out a collaborative Action Research project in which I have looked at learners' strategy use as "a cognitive choice and an emergent phenomenon" (Gao 2010, p.20). I have studied English language learning as embedded within social events and occurring as learners interact with people, objects and events in one secondary school in the Seychelles. I used an ethnographic approach which included classroom observation, interviews with teachers and journals, audio-recording and field notes.  Phase 1 of my study focused on current practices in three classes. In Phase 2, I analysed the data and reported back to the participating teachers. Common practices in the three classrooms were that the teachers taught students content knowledge only. For example, English lessons emphasized the development of English language literacy skills. In particular the teachers were concerned with getting students to understand ideas and facts about a topic being learnt such as writing a notice. They would also focus on linguistic topics such as grammar and vocabulary knowledge and writing mechanics in general. The teachers were seen as the main transmitters of knowledge while the students had very little voice in their learning, for example, choosing topics, purposes and audience. The students were given very few opportunities to talk among themselves about their work or strategies they used to solve their problems. Teacher talk consisted of giving instructions and asking students questions that tested their knowledge. There were few occasions where the teachers provided instruction that provoked new thinking and understanding about what was being taught.  The teachers felt that students depended too much on them for learning and wished to see their students becoming more independent learners, particularly in writing. Thus in Phase 3 of the research, the teachers and I focused on strategy instruction in the process approach to writing instruction with the aim of fostering dialogue among teachers and students about writing processes and problem-solving strategies. The analysis of findings of Phase 3 show that compared to Phase 1, the teachers minimised the practice of being merely transmitters of knowledge. Instead, they altered instruction and mediated learner writing strategies in a number of ways in a dialogic process through classroom instruction, use of collaborative writing tasks, questions and students' L1. However, while this was a step forward in making their students strategic, the teachers were yet to emphasise writing as a more holistic strategic activity which could have been accomplished by modelling their own thinking or self-talk or strategies related to planning, drafting, revising and editing of texts. Evidence also suggests that students used a number of strategies to mediate their own writing processes. These included using their film knowledge, humour, mother tongue, thinking aloud, teacher and peers to help them create text. There were also times when a few students drew on teaching techniques such as teacher-like scaffolding questions to mediate their own and their peers' learning.</p>


2016 ◽  
Vol 17 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Lisa Ann Rapp-McCall ◽  
Victoria Anyikwa

Research methods courses elicit more anxiety than usual for graduate social work students, and the online environment may pose an even greater challenge as the personal interaction between instructor and student is reduced or absent. It is therefore incumbent on research instructors to creatively engage students, reduce anxiety, and foster learning. There is a dearth of evidence, particularly regarding online education, explicating specific teaching strategies. This exploratory study sought to provide some answers. First-semester MSW students were invited to participate in a voluntary, anonymous, online survey at the end of a research methods course to determine which online teaching strategies were most effective in decreasing anxiety and increasing perception of knowledge. Strategies used in the class include asynchronous activities such as discussion questions, PowerPoint lectures, and email and telephone contact with instructors in addition to synchronous class sessions. Three tactics were rated by the 43 respondents as being most helpful for both decreasing anxiety and enhancing the perception of knowledge: personal contact with the instructor either via email, phone, and/or online meetings; the instructor’s synchronous class sessions; and active learning strategies employed during the synchronous class sessions. Implications for teaching and future research are discussed. 


2021 ◽  
Author(s):  
◽  
Jemma Christina Simeon

<p>Research on language learning strategies (LLS) suggests that LLS are indispensable to helping second language learners learn English (Oxford, Crookall et al. 2008). However, most research studies to date have been experimental and have focused on listing certain aspects of learners' strategy use. By contrast, I have taken a sociocultural approach and carried out a collaborative Action Research project in which I have looked at learners' strategy use as "a cognitive choice and an emergent phenomenon" (Gao 2010, p.20). I have studied English language learning as embedded within social events and occurring as learners interact with people, objects and events in one secondary school in the Seychelles. I used an ethnographic approach which included classroom observation, interviews with teachers and journals, audio-recording and field notes.  Phase 1 of my study focused on current practices in three classes. In Phase 2, I analysed the data and reported back to the participating teachers. Common practices in the three classrooms were that the teachers taught students content knowledge only. For example, English lessons emphasized the development of English language literacy skills. In particular the teachers were concerned with getting students to understand ideas and facts about a topic being learnt such as writing a notice. They would also focus on linguistic topics such as grammar and vocabulary knowledge and writing mechanics in general. The teachers were seen as the main transmitters of knowledge while the students had very little voice in their learning, for example, choosing topics, purposes and audience. The students were given very few opportunities to talk among themselves about their work or strategies they used to solve their problems. Teacher talk consisted of giving instructions and asking students questions that tested their knowledge. There were few occasions where the teachers provided instruction that provoked new thinking and understanding about what was being taught.  The teachers felt that students depended too much on them for learning and wished to see their students becoming more independent learners, particularly in writing. Thus in Phase 3 of the research, the teachers and I focused on strategy instruction in the process approach to writing instruction with the aim of fostering dialogue among teachers and students about writing processes and problem-solving strategies. The analysis of findings of Phase 3 show that compared to Phase 1, the teachers minimised the practice of being merely transmitters of knowledge. Instead, they altered instruction and mediated learner writing strategies in a number of ways in a dialogic process through classroom instruction, use of collaborative writing tasks, questions and students' L1. However, while this was a step forward in making their students strategic, the teachers were yet to emphasise writing as a more holistic strategic activity which could have been accomplished by modelling their own thinking or self-talk or strategies related to planning, drafting, revising and editing of texts. Evidence also suggests that students used a number of strategies to mediate their own writing processes. These included using their film knowledge, humour, mother tongue, thinking aloud, teacher and peers to help them create text. There were also times when a few students drew on teaching techniques such as teacher-like scaffolding questions to mediate their own and their peers' learning.</p>


1992 ◽  
Vol 45 (2b) ◽  
pp. 81-98 ◽  
Author(s):  
Euan M. Macphail ◽  
Steve Reilly ◽  
Mark Good

Experiment 1 explored performance of pigeons in two versions of a shortterm recognition memory procedure. In one version responding to entirely novel slides was rewarded, and responding to familiar slides (slides seen once, for 10 sec) was not rewarded; in the other version, responding to familiar slides was rewarded. Performance was initially below chance in both versions of the procedure. This result indicated that in this procedure associations were formed between the slides and the outcome (reward or non-reward) that followed their presentation. The result also suggested that the true capacity of pigeon recognition memory cannot be assessed using these procedures, as performance is inevitably disrupted by the bird's associative memory. The tendency of pigeons to form one-trial associations was exploited in Experiment 2. Phase 1 consisted of 16 two-session cycles: in Session 1 of each cycle, birds were shown 20 novel slides and were rewarded for responding to 10 of those slides; in Session 2, the same slides were shown again, with the same reinforcement contingencies. The birds showed significant overnight retention of the one-trial associations formed in Session 1 of each cycle. Phase 2 showed significant retention over periods of more than 20 days of associations involving 320 slides seen twice only. Phase 3 re-exposed for nine daily sessions one of the sets of 20 slides used in Phases 1 and 2; a high level of discrimination emerged rapidly and 4 (of 8) birds showed, by the end of training, no overlap in response rates to positive and negative slides. Comparative implications of the results are discussed.


2001 ◽  
Vol 05 (04) ◽  
pp. 235-242 ◽  
Author(s):  
YUAN-KUN TU ◽  
STEVE WEN-NENG UENG

Cigarette smoking is hazardous for various tissues in human. The cigarette smoke inhalation has been proved to delay bone healing. However, no previous study demonstrates the smoking effect on bony microcirculation. In this study, we investigated the effect of cigarette smoking on tibial vascular endothelium and blood flow by using the bone chamber model. Eighteen adult New Zealand rabbits were divided into 3 groups. Group 1: Control, Group 2: 1 week smoking, and Group 3: 6 weeks smoking. All these rabbits were then anesthetized, and their nutrient arteries of tibia were identified and cannulated. We put the tibia into bone chamber after cannulation, perfused with Krebs-Ringer solution (phase 1), and then compared the effect of vasospasm by norepinephrine dose-response curve (NEDRC). Acetylcholine (phase 2) and L-NMMA (phase 3) were also perfused and the NEDRC recorded. Acetylcholine can stimulate the release of nitric oxide and lower the NEDRC. L-NMMA inhibits NO synthesis in vascular endothelium, and hence results in vasoconstriction under various stimuli. Data collection and statistic processing were performed by ANOVA analysis. The NEDRC data in Group 1 (control) was set to be 100%. In phase 1 study, our results showed that 1 week cigarette smoking significantly increased NEDRC in Group 2 (142.5%, p<0.01). However, 6 weeks smoking strikingly boosted the response of NEDRC in Group 3 (226.5%, p<0.01). In phase 2 study, Group 2 tibia showed the NEDRC under acetylcholine perfusion to be without any difference in comparison with Group 1 (p>0.05). Nevertheless, Group 3 tibia showed significant vasospasm even under acetylcholine perfusion. In phase 3 study, L-NMMA perfused data revealed that; Group 3 tibia had the highest NEDRC, i.e. the most severe vasospasm. Based on our study, both short-term and long-term cigarette smoking are hazardous to the bony vascular endothelium. The nitric oxide production significantly attenuated in Group 2 and 3 tibia. However, the adverse effect of smoking seems reversible in short-term (Group 2). Long-term smoking (Group 3) causes irreversible damage to vascular endothelium and muscarinic receptor.


Author(s):  
Erika Vallefuoco ◽  
Andrea Caldeo

Background Background Treatment of pulmonary emphysema with Lung Volume Reduction Coil (LVRC) technique and related thoracic imaging preoperative, interventional, under radioscopic guidance, and postoperative. Materials and methods For the intervention, Nitinol coils are used, implanted through a catheter under radioscopic guidance using an Intensifier. The treatment is performed with induction of anesthesia, during one or two sessions. Results Coils are implanted on patients in different lobars regions, depending on the case. The patient's status is monitored in 3 phases: Phase 1 Preoperative; Phase 2 Intervention; Phase 3 Post-operative up to the following 5 years. This technique, given the effectiveness and an almost total absence of side effects, turns out to be a valid alternative to others methods for the treatment of severe pulmonary emphysema. Conclusions Through the analysis of the monitoring results, it is possible to infer that the patients subjected to LVRC (Coil) have high clinical benefits, but still not accompanied by significant long-term functional improvements.


Author(s):  
Yong-Yi Wang ◽  
Dunji Yu ◽  
Mike Cook

Abstract The vast majority of buried pipelines are not designed to accommodate significant localized ground movement caused by landslides, earthquakes, or subsidence/settlement. When a ground movement event occurs along the ROW of a buried pipeline, it is imperative that the pipeline operator determine whether the ground movement is a threat to pipeline integrity to protect those responding to the event, those living near the affected ROW, and the environment. This paper covers the development of a response plan that provides guidance to pipeline operators responding to a ground movement event while considering the unique conditions associated with such events. The response plan covers some critical decisions after an event, including, but not limited to (1) whether the event affects the pipeline, the local ROW, or those living adjacent to the ROW, (2) control of flow, i.e., the need for shutdown or pressure reduction, and (3) work needed to return the line to full-pressure service. The overall response plan is presented in three main phases: • Phase 1: Immediate Response, • Phase 2: Follow-on Assessment and Actions, and • Phase 3: Long-term Management. The structured response plan and associated guidance are presented in a self-contained stand-alone document available from PRCI. Parts of the document or the entire document can be adopted by operators, depending on the extent of existing procedures an operator may have. Alternatively, company-specific information and procedures can be added to the document to form a company-specific SOP.


2008 ◽  
Vol 11 (3) ◽  
pp. 287-305 ◽  
Author(s):  
Narelle K. Hansell ◽  
Arpana Agrawal ◽  
John B. Whitfield ◽  
Katherine I. Morley ◽  
Gu Zhu ◽  
...  

AbstractAlcohol dependence symptoms and consumption measures were examined for stability and heritability. Data were collected from 12,045 individuals (5376 twin pairs, 1293 single twins) aged 19 to 90 years in telephone interviews conducted in three collection phases. Phases 1 and 2 were independent samples, but Phase 3 targeted families of smokers and drinkers from the Phase 1 and 2 samples. The stability of dependence symptoms and consumption was examined for 1158 individuals interviewed in both Phases 1 and 3 (mean interval = 11.0 years). For 1818 individuals interviewed in Phases 2 and 3 (mean interval = 5.5 years) the stability of consumption was examined. Heritability was examined for each collection phase and retest samples from the selected Phase 3 collection. The measures examined were a dependence score, based on DSM-IIIR and DSM-IV criteria for substance dependence, and a quantity × frequency measure. Measures were moderately stable, with test–retest correlations ranging from .58 to .61 for dependence and from .55 to .64 for consumption. However, the pattern of changes over time for dependence suggested that the measure may more strongly reflect recent than lifetime experience. Similar to previous findings, heritabilities ranged from .42 to .51 for dependence and from .31 to .51 for consumption. Consumption was significantly less heritable in the younger Phase 2 cohort (23–39 years) compared to the older Phase 1 cohort (28–90 years).


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