Louisa's Birth     

R Mann 《The Journal of perinatal education》2011,20(4):182-184

In this column, Rachel Mann shares the story of the birth of her third daughter, Louisa. After a previous pregnancy loss, Mann chose to give birth to her third baby in a hospital with attending care from an obstetrician. In spite of the high-risk medical environment, she was able to have an unmedicated, powerful birth. Mann's careful planning, the support of her husband and doula, and her confidence in her ability to give birth helped make Louisa's birth all that Mann hoped it would be.  相似文献   

A Kinetic Analysis of the Ground Leg During Sprint Running     

Ralph Mann  Paul Sprague 《Research quarterly for exercise and sport》2013,84(2):334-348

Abstract

Fifteen highly skilled sprinters were filmed while running at maximum velocity. The results were digitized and computer processed with interest focused on the muscle moments generated about the hip, knee, and ankle of the ground leg. Muscle activity about the hip consisted of extensor (concentric) dominance from foot descent, through foot strike, and into mid-support. Muscle dominance shifted to the hip flexors (eccentric) during mid-support and continued through takeoff. Muscle dominance at the knee demonstrated a pattern of flexor (eccentric, then concentric) dominance from foot descent through foot strike and into mid-support. Knee extensors (eccentric, then concentric) then achieved dominance through takeoff. During the later stages of takeoff, the dominance decreased or reversed briefly to flexor (eccentric) activity prior to a period of minimal activity following the toe-off position. From a period of minimal activity prior and subsequent to ground contact, the plantar flexors (eccentric, then concentric) of the foot were dominant throughout the ground phase. Qualitatively, the unexpected knee flexor dominance during foot strike was generated to limit the braking action created during this portion of ground contact. The unanticipated hip flexor dominance during takeoff served to rotate the upper body forward and into the approaching air phase. In addition, both of these actions allowed efficient use of the two-joint muscles of the leg during the critical phases of ground contact. Finally, the minimizing or reversing of the knee extensor dominance during the later stages of takeoff served to protect the joint from injury. Quantitatively, the magnitude of hip extensor/knee flexor activity during foot strike was significantly related (r = .70, p = .01) to the prior occurrences of related leg injury in the subjects.  相似文献   

Using Charter Schools to Alleviate Racial Exclusion in Rural America: An Innovative Idea or a Trojan Horse?     

Bryan Mann  David T. Marshall  Andrew Pendola  Jason C. Bryant 《Journal of School Choice》2019,13(4):555-575

ABSTRACT

Racial segregation has remained a lasting legacy of rural schools in southern states. Our article explains a case where community leaders created a diverse charter school to change its historical practice of an isolated White private school and isolated African American public schools. We scan documents and literature related to this integration strategy to surface key themes when using rural charter schools to alter patterns of school segregation. First, we explain pressing issues in rural schools. Second, we describe how segregation and inequality have evolved in the South. Third, we explain research showing how charter schools maintain patterns of school segregation, but with exceptions and nuances in certain contexts. Fourth, we consider the benefits and tensions surrounding one rural charter school that offers an integrated educational program. Benefits range from societal to individual as the school fosters an environment where students are exposed to diverse educational experiences. Tensions include shifting power and funding dynamics and the possibility of using a good example to shepherd in less effective charter models elsewhere.  相似文献   

Motherhood,choice and the British media: a time to reflect     

L. Hadfield  N. Rudoe  J. Sanderson‐Mann 《Gender and education》2007,19(2):255-263

In this paper we ask: How is motherhood being represented in the British media, especially in relation to choice, age and fertility? Do media discourses reflect a redefinition or transformation of ‘motherhood’ in the twenty‐first century, and what implications do they have for feminist research into maternal identity and motherhood? As three Ph.D. students from The Open University, all working on different aspects of motherhood, we examine and discuss the significant debates around motherhood, fertility and choice taking place recently in the British media. In the context of increasing divergence from traditional family forms, advances in medical technology such as assisted reproductive techniques, and changing attitudes to sexual behaviour and marriage over the past few decades, motherhood and parenting remain contested sites in the public domain. The availability of contraception and of abortion has given rise to increased choice, and yet women’s fertility choices are increasingly subject to scrutiny and criticism. In particular, media debate in the UK has focused on challenges to traditional motherhood and the implication that the family is ‘in crisis’. This is particularly evident in the coverage of teenage mothers, older mothers and women who delay motherhood. Such media representations of older and younger mothers and those women who ‘leave it too late’ reveal significant insights into the social construction of motherhood.  相似文献   

Introduction to special issue on morphology and the acquisition of alphabetic writing systems     

Mann  Virginia A. 《Reading and writing》2000,12(3):143-147

Reading and Writing -  相似文献   

Evidence in seconds? Format and design considerations in the provision of reliable information to support evidence‐based practice     

Alison Lesley Weightman  Mala Kanthi Mann 《Health information and libraries journal》2000,17(2):63-70

Evidence‐based practice is gaining support amongst health professionals. However, the major barrier remains the lack of time to read the literature. There are also problems with the take‐up and use of evidence‐based information sources such as Cochrane reviews and Effective Health Care bulletins. If such evidence is to be incorporated into local guidelines and used in day‐to‐day practice, practitioners request that these and other reliable publications be further summarized in short packages and available within seconds. The Health Evidence Bulletins Wales offer a model for this approach. The Bulletins have gone through several developmental stages leading to a novel two‐column format. In the first column, brief statements summarize the best available evidence within a topic area. In the second, full details are provided of the supporting publications (and the evidence type, or research design) with links to the full text of documents, where possible from the electronic versions of each Bulletin. Results from a questionnaire study using a random sample and unsolicited feedback suggest that this ‘two‐tier’ approach to information provision is valued by users and has implications for information services currently under development to support clinical governance.  相似文献   

The cognitive levels test: Its relationship with reading and mathematics achievement     

Ronald C. Eaves  Craig Darch  Lester Mann  R. Hubert Vance 《Psychology in the schools》1990,27(1):22-28

Any instrument designed to measure broad cognitive ability is expected to correlate substantially with valid measures of academic achievement. This report describes an investigation designed to evaluate the relationship between the Cognitive Levels Test, a newly available instrument, and two tests of academic achievement that have been widely used for nearly two decades: the Woodcock Reading Mastery Tests and the KeyMath Diagnostic Arithmetic Test. The study included children in grades K-2 who were enrolled in a remedial summer school program. The results showed the Cognitive Levels Test (Cognitive Index) to be rather highly correlated with the KeyMath Diagnostic Arithmetic Test Total score (r=.72) and moderately correlated with the Woodcock Reading Mastery Tests Total Reading score (r=.55). A repeated measures analysis of variance comparing standard scores for the Cognitive Levels Test with those of the Woodcock Reading Mastery Tests indicated few mean differences between the two sets of scores. Implications concerning the validity of the Cognitive Levels Test were discussed.  相似文献   

Out with the old,in with the new: how changes in cricket helmet regulations affect the vision of batters     

Luke Wilkins  David Mann  Stephen Dain  Thomas Hayward  Peter Allen 《Journal of sports sciences》2019,37(1):13-19

The International Cricket Council recently introduced new regulations for helmets in cricket. Amongst other changes, these regulations limit batters from adjusting the gap between the peak and the grille, resulting in some controversy over whether the new helmet design reduces visibility of the ball. This study compared the visual field of individuals when wearing an old helmet that does not conform to the new regulations, and the equivalent replacement which does. The visual field of 10 male participants was tested whilst wearing an old and new helmet. The new helmet resulted in a significant reduction in the visual field of the wearer (M = 66.1 out of 76 points seen in the new helmet vs. 74.8 seen with the old helmet), with the restriction predominantly confined to the superior visual field. The new regulations do appear to restrict the visual field of batters, confirming the anecdotal reports of players. However, the majority of this restriction occurs in the superior field, suggesting that the impact on batting performance may be limited. The importance of considering the impact that new helmet regulations can have on vision, batting performance, and player safety is discussed.  相似文献