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Confirmatory Factor Analysis of the Youth Experiences Survey for Sport (YES-S)

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Open journal of Statistics 2015年第5期5卷 421-429页

作者： philip j. Sullivan Kaitlyn LaForge-MacKenzie Matthew Marini Department of Kinesiology Brock University St. Catharines Canada

Research on Positive Youth Development (PYD) has been hampered by lack of a valid measure for the construct, particularly for research in sport. The Youth Experiences Scale for Sport (YES-S) [1], is a five-factor measure of positive youth outcomes specifically designed for the sport context. The YES-S is a promising instrument that fills an important niche in PYD research, and MacDonald et al. provided support for many of its psychometric properties. However, the factor structure of the scale is currently based on an exploratory factor analysis and has not yet been subjected to a confirmatory factor analysis (CFA). The present study was designed to confirm the five-factor structure of the YES-S. A sample of 350 youth sport athletes (196 male, 153 female) completed the YES-S. A CFA showed that a modified version of the five-factor YES-S had excellent fit of the model to the data. An analysis of invariance showed no differences in responses in terms of gender. It is concluded that this short-form YES-S offers excellent psychometric properties while retaining the original factor structure of the YES-S. The results offer further support for the validity of the factor structure of the YES-S while providing a shorter version of the scale, which may be appealing for research with younger sport participants.

关键词： Positive Youth Development Sport Confirmatory Factor Analysis

Assessing the Intensity of Dog Walking and Impact on Overall Physical Activity: A Pilot Study Using Accelerometry

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Open journal of Preventive Medicine 2014年第7期4卷 523-528页

作者： Elizabeth A. Richards philip j. Troped Eunjung Lim Department of Exercise and Health Sciences University of Massachusetts Boston MA USA john A. Burns School of Medicine University of Hawaii Honolulu HI USA School of Nursing Purdue University West Lafayette IN USA

Introduction: Despite a growing body of research indicating that dog walking contributes to meeting physical activity (PA) guidelines, this literature is limited by the use of self-report measures of dog walking and overall PA. The objectives of this pilot study were to objectively assess dog walking with accelerometry, characterize the frequency, duration, and intensity of dog walking, and determine the contribution of dog walking to overall moderate-vigorous physical activity (MVPA). Methods: Sixty-five dog owners wore an Actigraph GT3X accelerometer for up to 7 consecutive days and recorded start/end times for dog walks with daily log sheets. Each minute with an activity count ≥ 760 was classified as MVPA. Descriptive statistics were used to summarize all variables. Logistic regression was used to examine associations between dog walking MVPA bouts and meeting PA guidelines, controlling for age, education, income, and gender. Results: Participants walked their dog an average of 1.2 ± 1.1 times/day, averaged 28.0 ± 15.6 minutes/walk, and accumulated 22.9 ± 17.5 minutes of MVPA/day during dog walks, of which 21.7 ± 17.9 minutes were accumulated in bouts ≥10 minutes. Seventy-eight percent of dog walking was classified as moderate-intensity and 3.5% was vigorous. Dog walking MVPA had a statistically significant positive association with meeting PA guidelines (OR = 2.32;95% CI = 1.06, 5.08). Conclusions: The majority of dog walking minutes were moderate-intensity and most minutes of MVPA during dog walking occurred in bouts. These findings suggest that dog walking is consistent with current PA guidelines for adults and should receive more consideration as a PA promotion strategy.

关键词： Physical Activity Exercise Pets Physical Activity Assessment Accelerometry

Country and My People and Sydney Opera House:The missing link

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Frontiers of Architectural Research 2019年第2期8卷 136-153页

作者： Chen-Yu Chiu philip Goad Peter Myers Nur Yildiz Ki lincer Department of Architecture Bilkent UniversityAnkaraTurkey

It is known that jφrn Utzon(1918-2008),the principal architect for the Sydney Opera House project(1957-66),had a lifetime obsession for Chinese art and ***,previous studies did not explore the relationship between Utzon and his venerated Chinese writer Lin Yutang(1895-1976).How Utzon represented the ideas and ideals he received from Lin Yutang's conceptualization of Chinese art and architecture in My Country and My People(1935)has not been systematically *** this end,this article examines the role of Lin Yutang's work in Utzon's architectural career generally and the architect's Sydney Opera House design in *** argues that My Country and My People nurtured young Utzon's own architectural philosophy,as reflected in his early manifestoes and design ***,Lin Yutang's Chinese aesthetics encapsulated in calligraphy,painting and architecture helped Utzon to initiate,articulate and further communicate the design principles of his Sydney Opera House,as well as several other important architectural works before and *** Utzon never fully realized his Opera House due to forced resignation in 1966,the inspiration from Lin Yutang vividly remains in Utzon's yet to be finished masterpiece.

关键词： Lin Yutang My Country and My People jφrn Utzon The Sydney Opera House Chinese art and architecture

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Calatrava

作者： philip jodidio edited by Peter Gossel.

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病理性近视脉络膜新生血管的治疗

上海交通大学学报（医学版） 2008年第6期28卷 731-735页

作者：许薇琦 philip j Rosenfeld 孙晓东上海交通大学第一人民医院眼科上海200080 美国迈阿密大学医学院Bascom Palmer眼科研究所迈阿密33136

病理性近视早期即可出现眼底病变且进行性加重,可导致视功能明显受损,其中脉络膜新生血管的发生是视力丧失的主要原因。文章对病理性近视的患病率、危害、自然转归、影响因素和治疗方法进行综述,着重探讨抗血管内皮生长因子药物治疗的... 详细信息

病理性近视早期即可出现眼底病变且进行性加重,可导致视功能明显受损,其中脉络膜新生血管的发生是视力丧失的主要原因。文章对病理性近视的患病率、危害、自然转归、影响因素和治疗方法进行综述,着重探讨抗血管内皮生长因子药物治疗的进展。

关键词：病理性近视脉络膜新生血管抗血管内皮生长因子

Variations in killer-cell immunoglobulin-like receptor and human leukocyte antigen genes and immunity to malaria

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Cellular & Molecular Immunology 2020年第8期17卷 799-806页

作者： Stephen Tukwasibwe Annettee Nakimuli james Traherne Olympe Chazara jyothi jayaraman john Trowsdale Ashley Moffett Prasanna jagannathan philip jRosenthal Stephen Cose Francesco Colucci Makerere University KampalaUganda University of Cambridge CambridgeUK University of Cambridge Centre for Trophoblast Research CambridgeUK School of Medicine Stanford UniversityStanfordCAUSA University of California San FranciscoCAUSA MRC/UVRI and LSHTM Uganda Research Unit KampalaUganda Department of Obstetrics&Gynaecology National Institute for Health Research Cambridge Biomedical Research CentreUniversity of CambridgeCambridgeCB20SWUK

Malaria is one of the deadliest infectious diseases in the world. Immune responses to Plasmodium falciparum malaria vary among individuals and between populations. Human genetic variation in immune system genes is likely to play a role in this heterogeneity. Natural killer (NK) cells produce inflammatory cytokines in response to malaria infection, kill intraerythrocytic Plasmodium falciparum parasites by cytolysis, and participate in the initiation and development of adaptive immune responses to plasmodial infection. These functions are modulated by interactions between killer-cell immunoglobulin-like receptors (KIRs) and human leukocyte antigens (HLAs). Therefore, variations in KIR and HLA genes can have a direct impact on NK cell functions. Understanding the role of KIRs and HLAs in immunity to malaria can help to better characterize antimalarial immune responses. In this review, we summarize the different KIRs and HLAs associated with immunity to malaria thus far.

关键词： Genetic variation Human Leukocyte Antigen Innate immunity Killer-cell immunoglobulin-like receptor Malaria Natural killer cells

Synthesis and dissociation of soliton molecules in parallel optical-soliton reactors

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Light(Science & Applications) 2021年第7期10卷 1289-1303页

作者： Wenbin He Meng Pang Dung-Han Yeh jiapeng Huang philip.St.j.Russell Max Planck Institute for the Science of Light Staudtstrasse 2 91058 ErlangenGermany Department of Physics Friedrich-Alexander-UniversitätStaudtstrasse 291058 ErlangenGermany State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

Mode-locked lasers have been widely used to explore interactions between optical solitons,including bound-soliton states that may be regarded as“photonic molecules”.Conventional mode-locked lasers normally,however,host at most only a few solitons,which means that stochastic behaviours involving large numbers of solitons cannot easily be studied under controlled experimental *** we report the use of an optoacoustically mode-locked fibre laser to create hundreds of temporal traps or“reactors”in parallel,within each of which multiple solitons can be isolated and controlled both globally and individually using all-optical *** achieve on-demand synthesis and dissociation of soliton molecules within these reactors,in this way unfolding a novel panorama of diverse dynamics in which the statistics of multi-soliton interactions can be *** results are of crucial importance in understanding dynamical soliton interactions and may motivate potential applications for all-optical control of ultrafast light fields in optical resonators.

关键词： optical soliton solitons

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煤粉射流火焰的大涡模拟及其验证

工程热物理学报 2019年第5期40卷 1188-1193页

作者：申浩树吴玉新许开龙 philip j.Smith 张海清华大学能源与动力工程系热科学与动力工程教育部重点实验室北京100084 犹他大学清洁与安全能源研究所盐湖城84112

本文建立了基于欧拉-欧拉体系下耦合了DQMOM模型的大涡模拟方法,对四种工况下的煤粉射流火焰进行数值模拟,并通过实验测量结果验证了数值模型的可靠性.结果表明该大涡模拟方法可以用来分析详细的火焰结构,计算煤粉颗粒的扩散行为和燃烧... 详细信息

本文建立了基于欧拉-欧拉体系下耦合了DQMOM模型的大涡模拟方法,对四种工况下的煤粉射流火焰进行数值模拟,并通过实验测量结果验证了数值模型的可靠性.结果表明该大涡模拟方法可以用来分析详细的火焰结构,计算煤粉颗粒的扩散行为和燃烧反应过程,有助于深入理解煤粉射流火焰的着火机理.在数值模拟中,气相温度可以被用来定义着火距离,大涡模拟不仅可以准确预测着火距离随工况变化的规律,还能得到随时间脉动的信息.

关键词：大涡模拟 DQMOM模型煤粉射流火焰着火行为

A prognostic nomogram for patients with resected fibrolamellar hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2019年第4期8卷 338-344页

作者： Kelly j. Lafaro Oliver S. Eng Mustafa Raoof philip Ituarte Susanne G. Warner Gagandeep Singh Yuman Fong Laleh G. Melstrom Department of Surgery City of Hope National Medical Center Duarte CA USA

Background: Fibrolamellar hepatocellular carcinoma (FLHC) is a unique entity compared to conventional hepatocellular carcinoma. The aim of this study was to examine post-resection outcomes and prognostic indicators for survival in this group of FLHC patients. Methods: A retrospective analysis of the National Cancer Database (NCDB) for patients with FLHC who underwent resection from 2004 to 2014 was performed. Univariate and multivariate Cox proportional hazard models were used to identify factors associated with overall survival, and a prognostic nomogram was generated. Results: There were 197 patients identified, 171 (86.8%) of whom had long-term follow-up data. Univariate and multivariate analyses were performed using patient and tumor demographics with the outcome variable of overall survival. On multivariate analysis, age [hazard ratio (HR) 1.03, P=0.003], vascular invasion (HR 1.75, P=0.05), tumor size >7 cm (HR 2.18, P=0.044), multifocal disease (HR 3.34, P=0.002), and node positive (pN+) disease (HR 2.75, P=0.003) were all negative predictors of overall survival. A prognostic nomogram was generated using these factors with a c-statistic superior to that of American joint Committee on Cancer (AjCC) staging (0.710 vs. 0.654). Conclusions: Independent predictors of decreased overall survival in patients with FLHC include age, vascular invasion, tumor size >7 cm, multifocal disease, and pN+ disease. This is the first study to develop a nomogram exclusively for FLHC that may predict survival in future studies.

关键词： Fibrolamellar hepatocellular carcinoma (FLHC) liver resection overall survival