Obtaining absorption spectra from single textile fibers using a liquid crystal tunable filter microspectrophotometer

Visible absorption spectra were recorded for single textile fibers using a microspectrophotometer based on a liquid crystal tunable filter. Spectra compared well with results from a conventional instrument. Some advantages include very fast and simple sample preparation and easy comparison of multiple fibers at the same time. Advantages over extraction-dependent methods include the fact that it is applicable to extremely small sample size, not susceptible to artifacts induced by variable extraction efficiencies, non-destructive, and much easier. Because an immense amount of information is collected in one experiment, good signal averaging is possible, along with multiple comparisons for each data set. The addition of a camera, computer, and liquid crystal tunable filter can transform a standard microscope into a microspectrophotometer capable of performing similar work.     

The Psychosocial Inventory of Ego Strengths: Development and Validation of a New Eriksonian Measure

An underexamined component of Erik Erikson's psychosocial theory is the concept of ego strengths. The eight ego strengths are present throughout the life span, but each have their ascendance in conjunction with successful psychosocial stage resolutions. Upon careful analysis of Erikson's writings, the Psychosocial Inventory of Ego Strengths (PIES) was developed to assess this component of psychosocial theory. The measure was scrutinized by several Eriksonian scholars for its face and content validity. Then, two studies were conducted among college samples in the United States and Canada. Evidence for internal consistency was shown for the eight ego strengths, as well as on overall score. Convergent validity was shown between the PIES and assessments of identity achievement, self-esteem, purpose in life, internal locus of control, and sex roles. Discriminant validity was observed in negative correlations between the ego strengths and hopelessness, identity diffusion, identity moratorium, and personal distress. Suggestions for future research utilizing this measure are given.     

Extracurricular Activity Availability and Participation and Substance Use Among American Indian Adolescents

School-based extracurricular activity involvement has been associated with lower levels of substance use among adolescents from various populations; however, these associations have only been slightly examined among American Indian (AI) adolescents. Building from various theoretical perspectives, it was hypothesized that AI adolescents’ perceived access to and the intensity (i.e., frequency) of participation in extracurricular activities would be associated with lower substance use and less engagement in risky substance use behaviors (i.e., being drunk or high at school, riding/driving with an intoxicated driver, and selling drugs). The moderating influences of sex, age, reservation residence, and metropolitan status also were examined. Data from the 2010 Arizona Youth Survey were analyzed for 5,701 8th, 10th, and 12th grade AI adolescents (49.1 % female). The expected protective effects of extracurricular participation were demonstrated, such that high levels of perceived availability and intensity of participation consistently predicted low levels of all outcomes. Some of these associations were moderated by one or more demographic factors, with unique patterns emerging for each behavior. Ultimately, the findings suggest that AI adolescents benefit from the availability of extracurricular activities and intensity of participation in them, but the degree of the effect is contingent upon other individual and contextual characteristics.     

Ego Strength Development of Adolescents Involved in Adult-Sponsored Structured Activities

A psychosocial conception of ego strengths is presented in relation to adolescent involvement in adult-sponsored structured youth activities. Five-hundred and seventeen high school students completed measures on their involvement in structured activities and on 8 ego strengths. Gender, age, and SES were controlled in a MANCOVA procedure and it was found that extracurricular activities of sports, student government, and belonging to an issues group, as well as engagement in volunteerism were related to several of the ego strengths. Religious attendance was not related to the ego strengths. In longitudinal analysis, it was shown that ego strength at Time 1 predicted involvement in structured activities at Time 2 (8 months later), but structured activities at Time 1 did not predict ego strength at Time 2. The findings are discussed relative to theory and research findings on the topic.Carol A. Markstrom is a Professor in Family and Consumer Sciences, West Virginia University. She received her Ph.D. in Developmental Psychology in 1988 from Utah State University. Her research interests include adolescent identity formation, positive youth development, American Indian adolescents, and indigenous models of human development.Xaioming Li is a Professor, Department of Pediatrics, Wayne State University. He received his Ph.D. in Educational Psychology in 1992 from the University of Minnesota. Research interests (in general) include child development, adolescent health risk prevention and intervention, research methodology, and biostatistics.Shana L. Blackshire is a M. S. Instructor, Child Development and Family Studies, Division of Family and Consumer Sciences, West Virginia University.Juanita J. Wilfong is a graduate student, Elementary Education, West Virginia University.     

关于女子高等教育创新的几点思考

新形势下的女子高等教育创新,首先要实现由单纯适应社会经济发展,向主动参与并推动社会发展的思想观念的转变,并按社会需求设置专业,在教育过程中夯实基础知识,提高教育质量。