On the acoustic signature of golf ball impact     

Shannon K  Axe JD 《Journal of sports sciences》2002,20(8):629-633

In this paper, we present results on the measurement and analysis of the sound that is produced by the sharp impact loading of a golf ball by a flat massive object (e.g. the face of a golf club). We discuss: (a) the motivation for such a study; (b) some necessary background information on how golf balls vibrate; (c) the techniques used to acquire and analyse the data; and (d) an analysis of the sound made by dropping balls on a smooth, massive concrete target surface. These results establish a simple method for rapid and non-destructive measurement of the effective high-frequency elastic shear moduli of balls and ball cores.  相似文献   

Robust fluidic connections to freestanding microfluidic hydrogels     

Shannon L. Faley  Bradly B. Baer  Taylor S. H. Larsen  Leon M. Bellan 《Biomicrofluidics》2015,9(3)

Biomimetic scaffolds approaching physiological scale, whose size and large cellular load far exceed the limits of diffusion, require incorporation of a fluidic means to achieve adequate nutrient/metabolite exchange. This need has driven the extension of microfluidic technologies into the area of biomaterials. While construction of perfusable scaffolds is essentially a problem of microfluidic device fabrication, functional implementation of free-standing, thick-tissue constructs depends upon successful integration of external pumping mechanisms through optimized connective assemblies. However, a critical analysis to identify optimal materials/assembly components for hydrogel substrates has received little focus to date. This investigation addresses this issue directly by evaluating the efficacy of a range of adhesive and mechanical fluidic connection methods to gelatin hydrogel constructs based upon both mechanical property analysis and cell compatibility. Results identify a novel bioadhesive, comprised of two enzymatically modified gelatin compounds, for connecting tubing to hydrogel constructs that is both structurally robust and non-cytotoxic. Furthermore, outcomes from this study provide clear evidence that fluidic interconnect success varies with substrate composition (specifically hydrogel versus polydimethylsiloxane), highlighting not only the importance of selecting the appropriately tailored components for fluidic hydrogel systems but also that of encouraging ongoing, targeted exploration of this issue. The optimization of such interconnect systems will ultimately promote exciting scientific and therapeutic developments provided by microfluidic, cell-laden scaffolds.  相似文献   

Interactive Kiosk at the Texas Tech University Libraries     

Ryan Litsey  Susan Hidalgo  Kaley Daniel  Julie Barnett  Amy Kim  Shannon Jones 《Journal Of Access Services》2015,12(1-2):31-41

The academic library, given its often privileged position on campus, is the information source that can include directional as well as general campus facts among the myriad of print and e-resources for reference. Also, an academic library's audiences can be quite varied and include prospective students or parents seeking more general knowledge of the building and the campus. Many times this need for information drives patrons to the library service desks. Sometimes, especially during the high-demand seasons of new student orientation and beginning of the fall semesters, the desk is so busy that many patrons will leave because they don't have the time to wait. To address this immediate need for information, Texas Tech University Libraries developed an interactive kiosk to provide general information for frequently asked questions in a more efficient, creative, and interactive way. The kiosk provides a fun method of satisfying a patron's information needs without the requirement of a staff member or the need to wait in line for help. The kiosk is available as long as the Library is open and provides a variety of useful answers to general questions, as well as facts about the Library.  相似文献   

Into the gray: a modified approach to citation analysis to better understand research impact     

Shannon L. Sibbald  Jennifer C. D. MacGregor  Marisa Surmacz  C. Nadine Wathen 《Journal of the Medical Library Association》2015,103(1):49-54

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It Costs a Lot to Look This Cheap: Preference for Low-Quality Graphic Design     

Shannon Zenner 《Visual Communication Quarterly》2019,26(1):22-31

Some 1,000 surveys were conducted on Amazon's MTurk, asking respondents to rate a high- and low-quality visual design, in this case a billboard ad. While most respondents preferred the high-quality ad, over a third opted for the low-quality design. Respondents who showed a preference for the low-quality design liked it for its “static” qualities, in that it was common, typical, average, and standard. Those who preferred the high-quality design liked it for its “dynamic” qualities, such that it was innovative, fascinating, novel, creative, and rich in elements. Older participants show a significant preference for the low-quality design. Implications of these findings for different types of visual communication are discussed.  相似文献   

Implementing a Multi-Tiered System of Support (MTSS): Collaboration Between School Psychologists and Administrators to Promote Systems-Level Change     

John W. Eagle  Shannon E. Dowd-Eagle  Andrew Snyder  Elizabeth Gibbons Holtzman 《Journal of educational and psychological consultation》2015,25(2-3):160-177

Current educational reform mandates the implementation of school-based models for early identification and intervention, progress monitoring, and data-based assessment of student progress. This article provides an overview of interdisciplinary collaboration for systems-level consultation within a Multi-Tiered System of Support (MTSS) framework. The roles of school psychologists and school-based administrators are presented in relation to the implementation of MTSS practices within an implementation science model. The training and expertise of each discipline are highlighted related to respective aspects of implementation drivers (i.e., competency, organization, leadership). Functions of principals and school psychologists during team-based, problem-solving MTSS practices are described based on a problem-solving framework consistent with school-based consultation. Future directions for graduate training of school psychologists and principals and directions for consultation research are provided.  相似文献   

Students’ Perspectives on LGBTQ-Inclusive Curriculum     

Shannon D. Snapp  Hilary Burdge  Adela C. Licona  Raymond L. Moody  Stephen T. Russell 《Equity & Excellence in Education》2015,48(2):249-265

Implementing curriculum that is inclusive of lesbian, gay, bisexual, transgender, queer, and questioning (LGBTQ) people has the potential to create an equitable learning environment. In order to learn more about students’ experiences of LGBTQ-inclusive curriculum, 26 high school students with diverse racial/ethnic, sexual, and gender identities were recruited from the Gay Straight Alliance (GSA) Network in California. Students participated in focus groups conducted by telephone by GSA staff, sharing their experiences of LGBTQ-inclusive curriculum in school. Qualitative coding methods, including grounded theory, were used to identify themes and interpret students’ responses. Data revealed that LGBTQ-inclusive curriculum was most often taught in social sciences and humanities courses as stand-alone lessons. LGBTQ-inclusive curriculum rarely met standards of social justice education, though opportunities for critical conversations about systemic oppression regularly emerged. For instance, teachers often failed to intervene in LGBTQ bullying and missed teachable moments conducive to inclusive curriculum. Some students learned positive LGBTQ lessons and highlighted the ways such curriculum reflected their identities and created a supportive school climate. Implications for equitable education are discussed.  相似文献   

Theory of mind and social interest in zero-acquaintance play situations     

Moore C  Bosacki SL  Macgillivray S 《Child development》2011,82(4):1163-1172

Many studies have examined associations between children's theory of mind and social behavior with familiar peers, but to date none have examined how theory of mind might relate to behavior toward unfamiliar peers in a play setting. Forty-four 4-year-olds (21 girls, 23 boys) participated in standard theory-of-mind tasks and in a play session with 3 or 4 other children who were unfamiliar. Children were also tested on general vocabulary ability. No relations were found between theory of mind and social engagement. However, positive associations were found between theory of mind and time spent observing, but not interacting with, other children. Possible explanations of the links between theory of mind, temperament, and social interest are considered.  相似文献   

‘The constant rejections hurt’: Skills and personal attributes needed to successfully complete a thesis by publication     

Margaret K. Merga  Shannon Mason  Julia E. Morris 《Learned Publishing》2019,32(3):271-281

The thesis by publication (TBP) is an increasingly popular approach to doctoral education that sees candidates publishing their research during their candidature, and including these outputs in their final thesis submission. Responsive to the realities of modern academia, a TBP provides doctoral candidates with opportunities to engage in the scholarly publication process, and to build their research portfolio. As the TBP gains further traction in many fields and countries, there is a need to better understand the skills and attributes needed to complete a TBP successfully. This paper draws on the views of 246 recent doctoral graduates of Australian universities to identify the skills and attributes they felt supported their success. Their responses have implications for the development and refinement of institutional policies and programs that are sensitive to the needs and experiences of doctoral candidates seeking to publish during candidature and create a TBP. As editors, peer‐reviewers, and publishers see a growing influx of papers sole‐ or co‐authored by doctoral candidates in response to the trend toward TBP, they may find themselves involved in supporting students to develop the skills and attributes needed to successfully publish during candidature.  相似文献   

Fine Motor Control is Related to Cognitive Control in Adolescents with Down Syndrome     

Chih-Chia Chen  Shannon D.R. Ringenbach  Andrew Albert  Keith Semken 《International Journal of Disability, Development & Education》2014,61(1):6-15

The connection between human cognitive development and motor functioning has been systematically examined in many typical and atypical populations; however, only a few studies focus on people with Down syndrome (DS). Twelve adolescents with DS participated and their cognitive control, measured by the Corsi-Block tapping test (e.g., visual working memory), the Auditory Memory span test (e.g., verbal working memory) and the Tower of London test (e.g., cognitive planning), and motor control, measured by the Purdue Pegboard (e.g., fine motor control), were measured in this study. Results indicate that if people with DS have better performance in fine manual dexterity, they will have better performance in cognitive planning and verbal working memory abilities. The co-activation hypothesis of the prefrontal area and the cerebellum may support this positive relationship. Hence, it is suggested people with DS will obtain benefits in cognitive control by participating in further motor intervention.  相似文献