Figs,Wasps, Carrots and Sticks? A New Theoretical Approach to Understanding the Origin and Nature of Mutualisms and Symbiotic Relationships     

Andrew Willden 《中国科学院院刊(英文版)》2015,(1):50-51

<正>Mutualisms—relationships where by two organisms live in tandem with one another,each providing a service to the other—are among the most interesting and complex relationships in nature.These kinds of relationships are generally considered cooperative interactions,whereby each of the organisms incurs substantial cost in trading services with its partner in order for each of them to gain some benefit and increase their chances of survival and evolutionary fitness.While  相似文献   

The Philosophy of Sport     

Andrew Edgar 《国际体育史杂志》2015,32(15):1804-1807

Philosophy as a discipline is typically characterized through the use of rigorous argument and analysis, and the clarification of the meaning of concepts. Philosophical problems are thus resolved, not through the appeal to empirical evidence, but by identifying inconsistent and confusing patterns of thought and reflection. This paper will clarify the nature of a philosophical methodology by explicating the relationship between the philosophy of sport and the core traditional areas of philosophy, metaphysics, epistemology, axiology and logic.  相似文献   

Knowledge of bout duration influences pacing strategies during small-sided games     

John Andrew Sampson  Hugh Head Kelsham Fullagar  Tim Gabbett 《Journal of sports sciences》2015,33(1):85-98

This investigation examines pacing during intermittent team sports. Sixteen junior Rugby League players participated in eight different small-sided offside touch games. All games were 24 min, but bout durations differed in continuous (1 × 24 min) or repeated (2 × 12, 3 × 8, 4 × 6, 6 × 4, 8 × 3, 12 × 2 or 24 × 1 min) formats. Repeat bouts were interspersed by 2 min of passive rest, and participants were informed of the bout duration immediately prior to the game. Heart rates, ratings of perceived exertion and data gathered from global positioning system devices were used to investigate the pacing strategies employed within each game. No significant (P > 0.05) between-game differences were observed in total distance; however, during the 1-min bouts, high-speed movement was significantly (P < 0.05) increased, during the first and second quarters of the 24 × 1-min game compared to all other formats (effect size range: 0.75 ± 0.61–1.38 ± 0.47). Furthermore, the rate of decline in high-speed movement over-time was greatest during the 24 × 1-min game with large differences observed between the first and third quarters (effect size: 0.90 ± 0.58). Greater moderate-speed (effect size range: 0.62 ± 0.63–1.56 ± 0.40) and less low-speed (effect size range: 0.69 ± 0.62–1.54 ± 0.40) distances were also observed during the 1-min bouts, yet heart rates were higher during the continuous 1 × 24-min game. Pacing strategies during intermittent activities are influenced by the number and duration of exercise bouts. Practitioners should consider within-game bout durations when prescribing game-based activities to improve aerobic capacity.  相似文献   

Imagining the Journalist of the Future: Technological Visions of Journalism Education and Newswork     

Brian Creech  Andrew L. Mendelson 《The Communication Review》2015,18(2):142-165

Digitization has resulted in great uncertainty for journalism, leading to disruption of business models, revenue streams, media distinctions, and production practices. This uncertainty has led to many articles, reports, blog posts, and general commentary discussing the future of both journalism and the skills required by journalists to succeed in this environment. This essay analyzes these discourses, focusing specifically on the nature of technology as the sole determiner of journalism’s future, with interventions aimed at journalism education and the structure of newswork. An idealized notion of the technologically adept journalist, ready to usher in digital stability, emerges as the object of these debates and, thanks in large part to the limited scope and ahistorical character of digital discourse, obscures more persistent, systemic critiques of technology and journalism.  相似文献   

Bring the facts,bust the myths     

Andrew Plume 《Learned Publishing》2019,32(1):3-5

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Optimal search strategies for identifying moderators and predictors of treatment effects in PubMed     

Marcia Tummers  Ralph van Hoorn  Charlotte Levering  Andrew Booth  Gert Jan van der Wilt  Wietske Kievit 《Health information and libraries journal》2019,36(4):318-340

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“Not like that,not for that,not by them”: social media affordances of critique     

Katrin Tiidenberg  Andrew Whelan 《传播与批判/文化研究》2019,16(2):83-102

This paper has two objectives: to explicate the sociotechnical conditions that facilitate critique on social media platforms (specifically: Tumblr); and to operationalize a “working theory” from Foucault’s conceptualization of critique. We analyze resistant practices observed (in ethnographic study) in a Not Safe For Work (NSFW) community on Tumblr, arguing that the potential for critique arises there at the intersection of platform architecture and use cultures. Specifically, we show how critique emerges from shared practices of ethics, most visibly enacted through what we call voluntary vulnerability and paying it forward. This potential for critique is arguably at risk with Tumblr’s recent NSFW ban.  相似文献   

Designs of duty: Using exhibits to build partnerships     

Beth Hildebrandt  Stacey Knight-Davis  Andrew Cougill 《College & Undergraduate Libraries》2019,26(1):52-65

Exhibits in academic libraries are drivers for outreach. Many exhibit programs center on national traveling exhibits often because they are well done and already completed. The only input necessary from a host institution is space and a small amount of time to put up the exhibit. Locally made exhibits create a stronger connection to the community, but they are more expensive in terms of time for research and creating the exhibit, and money for printing. The adage “many hands make light work” accurately describes the local exhibit creation process when multiple groups come together. Partnerships between libraries to share exhibit content broaden the Pool of exhibit possibilities and raise awareness of exhibit programs for all partners. In this case, an exhibit at the University of Illinois at Urbana-Champaign that focused on veterans and their service-related tattoos was picked up and built upon by Eastern Illinois University. This case study covers multiple libraries, both academic and public, sharing an exhibit about veterans and their tattoos, providing outreach opportunities to veteran and service member populations at all participating libraries  相似文献   

Considerations for the Occasional Project Manager     

Andrew Hubble  Jay Spitulnik 《Performance Improvement》2016,55(7):15-20

Performance improvement professionals who occasionally manage projects can benefit from applying the discipline of project management. This article offers a checklist of proven techniques that lend themselves to most projects. Many techniques are applicable even in organizations lacking a project management culture. These techniques do not assume formal project management training. The checklist draws on common elements identified through a review and analysis of key sources that outline the ingredients for project success, such as communication, stakeholder engagement, executive support, and risk management.  相似文献   

Parental Cultural Socialization of Mexican‐American Adolescents’ Family Obligation Values and Behaviors          下载免费PDF全文

Kim M. Tsai  Eva H. Telzer  Nancy A. Gonzales  Andrew J. Fuligni 《Child development》2015,86(4):1241-1252

The current study examined how parents’ cultural socialization efforts contribute to adolescents’ family obligation values and behaviors and how these processes may depend upon the relational climate at home. Utilizing survey and daily diary methodologies, 428 Mexican‐American adolescents (50% males; M_age = 15 years) and their parents (83% mothers; M_age = 42 years) participated in the study. Adolescents reported on their family obligation values and engagement in family assistance tasks across 14 days. Parents reported on their cultural socialization practices. Results indicated that parental cultural socialization was associated with adolescents’ family obligation values and behaviors when parent–child relationships were low in conflict and high in support. Findings suggest that the transmission of cultural values and practices is best facilitated through positive parent–child relationships.  相似文献