Typology of motivation and learning intentions of users in MOOCs: the MOOCKNOWLEDGE study

Educational technology research and development - Participants in massive open online courses show a wide variety of motivations. This has been studied with the elaboration of classifications of...     

Applying the PEN-3 Cultural Model to Address HIV/AIDS Prevention in Rural Guatemala

Guatemala has an accelerating HIV rate, where prevalence is three times higher among indigenous than nonindigenous, comprising 21% of all cases. Vulnerability is exacerbated by high poverty, low literacy, and poor access to testing and treatment options. This study develops a community-engaged HIV prevention campaign plan for the Mayan town of Santiago Atitlán. The PEN-3 model of cultural sensitivity frames this formative research project. Assessment domains of the PEN-3 model (Cultural empowerment and Relationships & expectations) identify culturally relevant factors affecting HIV prevention behaviours. The Cultural identity domain is utilized to identify entry points enhancing cultural acceptance and efficacy.     

The suitability of Sanders’ model for calculation of the propulsive force generated by the hands during sculling motion

This study examined whether Sanders’ model is suitable for estimating accurately the propulsive force generated by the hands’ motion in swimming comparing the calculated force obtained using the model and the measured force during an actual propulsive action. The measured and calculated forces were obtained from 13 swimmers who, while tethered, performed a sculling motion in a prone position for the purpose of displacing the body by moving it forward. Kinematic analyses were conducted to obtain the calculated force, while the measured force was obtained via the use of a load cell. The calculated force was lower than the measured force and accounted for only a small part of the variation in the measured force. The forces could not be used interchangeably, and there were fixed and proportional differences between them. Consequently, this study indicates that Sanders’ model is not suitable for estimating accurately the propulsive force generated by the swimmer’s hands during sculling motion. However, research that integrates analyses from different approaches could result in improvements to the model that would render it applicable for estimating the propulsive forces during movements that are characterised by directional changes of the hands.     

Creativity: a challenge for contemporary education

ABSTRACT

In this essay, I comment on the objective of cultivating creativity in general and in schools in particular. I start by tracing the historical origin of this objective, then discuss a select set of relevant issues, including what can be considered the best practices for achieving this. I conclude by contemplating the potential for globalisation of this objective, and the portability of general pedagogies and specific approaches to cultivating creativity between different educational systems.     

空间均匀低温氢气燃烧器开发（英文）

目的:设计制造低温的催化氢气燃烧器,并对其进行相关功能性测试。创新点:成功设计并制造出一个集成流量分配器的催化低温氢气燃烧器。方法:1.基于树状分叉方法,设计燃烧器的流量分配器,均匀分配气体到催化表面,并利用熔融沉积成型技术制备原型样机。2.基于测试结果,利用选择性激光熔化技术对燃烧器进行最优化设计。3.对设计的催化燃烧器的相关功能进行验证。结论:1.设计的低温催化燃烧器与传统的非催化燃烧器相比具有很多优势,尤其是实现了无焰均匀低温(约200°C)的产热;这一技术有望运用于化工领域的增材制造。2.本文不但用选择性激光熔融技术制备了最终产品,而且利用了熔融沉积成型技术进行快速的样机制备。3.催化剂多孔载体的调控和催化剂的负载方式研究有望进一步提升燃烧器的综合性能。     

Going, going, gone. Exit forms and the innovative capabilities of firms

Although innovation is essential to build a competitive advantage and survive in the long run, some firms choose to exit, through mergers and acquisitions (M&As), or radically change their business portfolio and identity. This paper examines how innovative capabilities influence the decision of a firm to exit, among business closure, M&A, and radical restructuring. Using an analysis of a large and rich panel of Dutch manufacturing firms, we find that product and process innovation are equally important to lower the probability to close down activities, and this effect is stronger when product and process innovations are pursed in combination. We also find that process innovation reduces the probability of exit by radical restructuring, while product innovation, when not supported by process innovation, especially increases the probability of exit by M&As. Our findings suggest that exit strategies are intimately bound to the nature and synergies of innovative efforts.     

Research, development, and firm growth. Empirical evidence from European top R&D spending firms

Following recent literature, we present a model of endogenous firm growth with R&D investment as one of the main mechanisms of growth. Our study evidences a positive effect of R&D intensity on the sales growth by using OLS, quantile regressions, and GMM system estimators for a sample of 754 European firms for the 2003-2007 period. We also find this association is more intense in high-growth firms and is especially significant when referring to high-technology sectors. This paper gives empirical support to those recommendations from policy makers and business leaders for maintaining the R&D expenditures especially in high-technology sectors even when facing a recession.     

Participatory Action Research and Critical Race Theory: Fueling Spaces for Nos-otras to Research

Drawing on the intersections of a justice oriented participatory action research and critical race theory, this essay explores the possibilities for research embedded in the theoretical, ethical and methodological overlaps between the two. Using the Echoes project as a case study, a participatory collective of intentionally diverse youth from New York and New Jersey brought together in the long shadow of Brown, to document and perform educational injustice in their schools, the essay asks social scientists what it means to engage research that takes seriously the idea of mutual implication, or what Anzaldúa (Borderlands/La Frontera, The New Mestiza, 1999) calls nos-otras—whereby research is designed to seek knowledge at the nexus of everyday lived experience and intricate social systems; to ask questions that allow individuals to hold multiple, even opposing, identities; to provoke analyses that requires historical re-memory; to destabilize naturalized power hierarchies. Research that calls for socially engaged questions that demand to be answered collectively through research and action.

ISPCAN Child Abuse Screening Tools Retrospective version (ICAST-R): Delphi study and field testing in seven countries

ObjectivesTo gain consensus among an ethnically and linguistically diverse group of international child protection experts on the structure and content of a new survey tool for retrospective measurement of child abuse, and to determine the performance of the instrument through an international field trial with young adults.MethodsThe questionnaire was developed through focus group discussions with international experts, and then subjected to a Delphi study in two waves to determine the perceived importance and translatability of items. The resultant questionnaire was translated into six languages and field tested in seven countries with convenient samples of young adults aged 18–26 years (N = 842).ResultsChild maltreatment experts from 28 countries provided input to questionnaire development. Satisfactory agreement on draft item inclusion and exclusion and the translatability of items was gained. The tool includes 15 primary questions about potentially abusive physical, sexual and emotional events, with follow-up questions about perpetrator characteristics, frequency of acts and periods in childhood when the recalled abuse occurred. The field test revealed lifetime prevalence per item usually exceeded 10% (11/15 items; range 2.1–49.5%). Internal consistency (Cronbach's alpha) was moderate to high for each of three item sub-sets (between .61 and .82) and the rates of missing data were low (less than 1.5% for 14 of 15 items). The great majority of respondents nominated either peer and/or adult perpetrators (between 82.3% and 98.2% depending upon the item), and among these, child/adolescent peers and non-family adults (including teachers for emotional and physical acts) were nominated often.ConclusionsThe ICAST-R is based on consensus from international experts, translates clearly and has satisfactory properties for adoption as a survey tool to estimate prevalence and describe perpetrators and other contextual aspects of child abuse.Practice implicationsThis tool can be utilized in a broad range of cultures and languages and may contribute to improved research practice. Although the core items are limited to just 15 acts of maltreatment, if these behaviorally specific questions are adopted as key indicators and incorporated into comprehensive local, national or regional surveys, eventually there should be greater comparability in survey estimates.