Kbean:基于区块链的平台,创造一个新的艺术市场     

Kiyoung Kate Nam 《收藏》2018,(11)

正我们热爱艺术!艺术是只有人类可以创造且欣赏的罕见形式之一。然而,艺术行业却是一个相对封闭的行业,面临着诸多的挑战。例如:1.新兴艺术家很难打人市场;2.艺术品的评价与交易缺乏透明度,这阻碍了新的市场参与者进入;3.人们一般认为单个买家负担不起艺术作品的花费,事实也的确如此;4.艺术作品的出处和交易记录缺少透明度,因此,如果想"了解内幕",则这种活动进一步限制了市场活动。Kbean是一种技术解决方案,可以通过区块链  相似文献   

Visualization of Wormlike Micelle Fluid Flow in a Mixing Tank     

Hongyuan Wei  Jieliang Lu  Chong Gu  Kate Xu  Boonho Ng  Leping Dang 《天津大学学报(英文版)》2018,(4)

In this study,particle image velocimetry was applied to investigate flow fields of wormlike micelle(WLM) fluids in a mixing tank equipped with a four-blade,down-pumping,pitched blade turbine. First,the rheology of WLM fluids was investigated,and the Carreau model was utilized to describe their apparent viscosity. Then,the effects of the rotation speeds and rheological properties on the flow fields were studied using different WLM fluids at different rotation speeds. The results revealed that with increasing Reynolds number,the discharge angle decreases and the carven size increases. Furthermore,elastic effects of WLM fluids lead to a more curved flow and a smaller carven.  相似文献   

Experimental research in school psychology internationally: An assessment of journal publications and implications for internationalization          下载免费PDF全文

John C. Begeny  Rebecca A. Levy  Rahma Hida  Kate Norwalk 《Psychology in the schools》2018,55(2):120-136

Past studies have examined the contents of journal articles in school psychology, and more recently there has been increased interest in examining the frequency and characteristics of experimental studies appearing in school psychology journals. However, no prior studies have examined the international representation of experimental and intervention studies. This study evaluated every article published from 2002 to 2016 across eight school psychology journals that publish international scholarship. Several research questions were addressed (e.g., what is the frequency of experimental research internationally, what are the characteristics of those studies, and is the scholarship consistent with the global geography of school psychology?). Overall, findings revealed that although the field of school psychology is arguably international, the experimental research reflected in the eight journals selected for review does not adequately represent the global geography of the field, thereby also suggesting that the degree of internationalization in school psychology is relatively poor. The importance of these and related findings is discussed, and recommendations are provided that may help to improve the geographical representation of experimental research in school psychology as well as its overall internationalization.  相似文献   

Integrating curriculum: a case study of teaching Global Education     

Kate Ferguson-Patrick  Ruth Reynolds  Suzanne Macqueen 《欧洲师范教育杂志》2018,41(2):187-201

Despite widespread support for integrated approaches to teaching, classroom practice reveals a lack of implementation. This paper explores challenges and opportunities in teaching an integrated curriculum, and connects this with the contemporary notion of a twenty-first century curriculum and pedagogy. A case study of Global Education (GE) is used to delineate the complexity of issues when teachers attempt to move beyond disciplinary-based teaching approaches. We examine curriculum documents, advice for teachers on curriculum implementation, preservice teachers’ experiences in schools during Professional Experiences and national guidelines for Professional Experience. Through these data, a broad picture emerges of influences on integrating curricula in classrooms. Opportunities to integrate curriculum incorporating twenty-first century pedagogies were limited by pressures on teachers with preservice teachers rarely exposed to authentic integration. Teachers’ professional standing requires clear guidelines, which allow them to pursue important twenty-first century content and skills , for young citizens and this must begin in preservice education.  相似文献   

Effect of surrogate design on the measured stiffness of snowboarding wrist protectors     

Caroline Adams  David James  Terry Senior  Tom Allen  Nick Hamilton 《Sports Engineering》2018,21(3):217-225

In snowboarding, the wrist is the most common injury site, as snowboarders often put their arms out to cushion a fall. This can result in a compressive load through the carpals coupled with wrist hyperextension, leading to ligament sprains or carpal and forearm bone fractures. Wrist protectors are worn by snowboarders in an effort to reduce injury risk, by decreasing peak impact forces and limiting wrist extension to prevent hyperextension during falls. There is no international standard or universally accepted performance specification that snowboarding wrist protectors should conform to, resulting in an inability to judge which designs offer the best protection. This study investigated how surrogate arm design affected the stiffness of wrist protectors during quasi-static mechanical testing. Three surrogate arms with increasing design complexity were used to test three wrist protectors. The results show that surrogate design does influence the stiffness of snowboarding wrist protectors. Given that the surrogate does influence protector performance, it is recommended that a standard surrogate design is established for research and product testing.  相似文献   

排名前10的与预防运动和体育活动猝死相关的关键问题          下载免费PDF全文

Rachel K. Katch  Samantha E. Scarneo  William M. Adams  Lawrence E. Armstrong  Luke N. Belval  Julie M. Stamm  Douglas J. Cas  朱为模审校 《体育科研》2018,(2):31-46

参加有组织的体育运动和休闲活动存在发生严重伤病甚至死亡的内在风险。虽然造成体育运动或体育活动中猝死的原因有很多,但运动医学和循证标准治疗方面的进展已使临床医生得以更有效地预防、发现和治疗可能致死的伤患。随着研究与技术不断发展进步,当前的治疗标准正在不断发展以更好地改善患者的治疗效果。本文提出了10个与运动和体育活动中猝死的主要原因及其治疗手段有关的关键问题,未来开展的研究将提高运动员和休闲运动爱好者参与运动的安全度。当前证据表明,如采取正确的预防策略或最佳治疗方案,绝大多数的死亡案例是可以避免的。  相似文献   

Examining the capacity of a sport for development programme to create social capital     

Andrew Adams  Kevin Harris  Iain Lindsey 《Sport in Society》2018,21(3):558-573

Robert Putnam’s conceptualization of social capital has been commonly associated with, and used to analyse, sport-for-development programmes. This paper bucks this trend and uses James Coleman’s rational strain of social capital to examine the use of sport as a component part of a programme to support male adults in addressing connected problems of substance misuse, homelessness and other forms of social exclusion. Using a qualitative research strategy, in-depth and longitudinal data were collected using individual interviews and focus groups with programme participants and key stakeholders over a three-year period. The results suggest the importance of unintentionality for the formation and use value of social capital; indicating that social capital created through this programme was individual, contingent on interactional context and benefited individuals in line with Coleman’s six aspects of social capital.  相似文献   

Effect of a randomised 12-week resistance training programme on muscular strength,cross-sectional area and muscle quality in women having undergone Roux-en-Y gastric bypass     

Paul Daniels  Timothy A. Brusseau  Morgan S. Hall  Lance Davidson  Ted D. Adams 《Journal of sports sciences》2018,36(5):529-535

The purpose of this study was to examine the effect of a 12-week resistance training programme on fat-free mass (FFM), muscle cross-sectional area, muscular strength and muscle quality in women who underwent Roux-en-Y gastric bypass surgery. Participants were 16 women (mean age = 44.9 ± 10.2 years) from bariatric surgical groups who were randomly assigned into either a control or an intervention group. Air displacement plethysmography measured FFM and magnetic resonance imaging measured quadriceps muscle cross-sectional area and whole thigh muscle cross-sectional area. Muscular strength and quality was assessed using an estimated 1-Repetition Maximum assessment. All measurements were collected twice, at baseline and at a 12-week follow-up. There were significantly greater improvements in leg press strength (mean differences = 55.4%, P < 0.001, Cohen’s d = 2.4), leg extension strength (mean differences = 18.0%, P = 0.014, Cohen’s d = 0.86) and leg press muscle quality (mean differences = 54.5%, P < 0.001, Cohen’s d = 1.9) in the intervention group compared to the control group following the resistance training programme. The resistance training intervention significantly improved muscular strength and quality; however, it did not illicit changes in FFM or muscle cross-sectional area in women who underwent Roux-en-Y gastric bypass surgery.  相似文献   

‘All of us together in a blurred space’: principles for co-creating curriculum with international partners     

Rebecca Bilous  Laura Hammersley  Kate Lloyd  Felicity Rawlings-Sanaei  Greg Downey  Maria Amigo 《International Journal for Academic Development》2018,23(3):165-178

This paper shares an innovative methodology to ‘co-create’ a curriculum with eleven international community development organisations from seven countries to prepare undergraduate students for international work-integrated learning activities. The co-creation process was complex, messy, and always evolving. Here we reflect on and document the process, identifying three key methodological principles that might guide the co-creation process for others. These principles embrace the unpredictable, emotional, and personal reality of bringing together diverse ideas and perspectives, as well as opening up possibilities for more creative ways of communicating and listening to what is seen, heard, and felt.  相似文献   

Strength training: Isometric training at a range of joint angles versus dynamic training     

Jonathan P Folland  Kate Hawker  Ben Leach  Tom Little  David A Jones 《Journal of sports sciences》2013,31(8):817-824

Strength training with isometric contractions produces large but highly angle-specific adaptations. To contrast the contractile mode of isometric versus dynamic training, but diminish the strong angle specificity effect, we compared the strength gains produced by isometric training at four joint angles with conventional dynamic training. Thirty-three recreationally active healthy males aged 18?–?30 years completed 9 weeks of strength training of the quadriceps muscle group three times per week. An intra-individual design was adopted: one leg performed purely isometric training at each of four joint angles (isometrically trained leg); the other leg performed conventional dynamic training, lifting and lowering (dynamically trained leg). Both legs trained at similar relative loads for the same duration. The quadriceps strength of each leg was measured isometrically (at four angles) and isokinetically (at three velocities) pre and post training. After 9 weeks of training, the increase in isokinetic strength was similar in both legs (pooled data from three velocities: dynamically trained leg, 10.7%; isometrically trained leg, 10.5%). Isometric strength increases were significantly greater for the isometrically trained leg (pooled data from four angles: dynamically trained leg, 13.1%; isometrically trained leg, 18.0%). This may have been due to the greater absolute torque involved with isometric training or a residual angle specificity effect despite the isometric training being divided over four angles.  相似文献