The relationship between the golf swing plane and ball impact characteristics using trajectory ellipse fitting

The trajectory of the clubhead close to ball impact during the golf swing has previously been shown to be planar. However, the relationship between the plane orientation and the orientation characteristics of the clubhead at ball impact has yet to be defined. Fifty-two male golfers (27 high skilled, 25 intermediate skilled) hit 40 drives each in an indoor biomechanics laboratory. This study successfully fitted the trajectory of the clubhead near impact to an ellipse for each swing for players of different skill levels to help better explain this relationship. Additionally, the eccentricities of the ellipses were investigated for links to skill level. The trajectory of the clubhead was found to fit to an ellipse with RMSE of 1.2 mm. The eccentricity of the ellipse was found to be greater in the high-skilled golfers. The club path and angle of attack generated from the ellipse fitted clubhead trajectory were found to have a normalised bias-corrected RMSE of 2% and 3%, respectively. A set of “rule of thumb” values for the relationship between the club path, angle of attack and delivery plane angle was generated for use by coaches.     

Using a hypertext environment for teaching process writing: An evaluation study of three student groups

The present research consisted of a comprehensive evaluation of a hypertext model for teaching process writing at the junior high and high school level. Interests were to determine how two teachers and three different age groups of students used and reacted to the model, specifically, its embedded design features of model stories, note cards, idea buttons, mini-lessons, branching buttons, and cut-and-paste-tools. Results showed applications of the embedded features to vary based on teacher attitudes, feature attributes (e.g., ease of use and appeal), and student characteristics. Older students made more usage of many of the features, but were less positive about the hypertext model given their greater involvement with completing writing assignments rather than with exploring new forms of writing. The implications of the results are discussed regarding the instructional design and classroom implementation of new technologies for teaching process writing strategies.This study was conducted as a doctoral dissertation completed by the first author at the University of Memphis under the supervision of the second and third authors.     

Knowing what you know: improving metacomprehension and calibration accuracy in digital text

This paper presents results from an experimental study that examined embedded strategy prompts in digital text and their effects on calibration and metacomprehension accuracies. A sample population of 80 college undergraduates read a digital expository text on the basics of photography. The most robust treatment (mixed) read the text, generated a summary for each page of text, and then was prompted with a metacognitive strategy. The metacognitive treatment received metacognitive strategy prompts only, and the cognitive group implemented the cognitive strategy (summarization) only. A control group read the text with no embedded support. Groups were compared on measures of achievement, attitudes, cognitive load, and metacomprehension and calibration accuracy. Results indicated that a combination of embedded cognitive and metacognitive strategies in digital text improved learner achievement on application-level questions, yielded more accurate predictive calibration, and strengthened the relationship between metacomprehension and performance, all of which are common attributes of an academically successful learner.     

Attention and curiosity in museums

Two hundred and thirty-four museum visitors of all ages were observed as they entered the Object Gallery area of the Florida State Museum. Visitors were observed under conditions where objects were available for close inspection but could not be manipulated (baseline data) and later when the same objects were placed on tables and were available for visitors to touch, move, and use a variety of senses to inspect them (intervention data). Data were recorded on the sex, age, and number of subjects in these areas under each of the above conditions. The results obtained show a significant increase in the number of visitors entering this section of the museum when manipulatable objects were available. Baseline data showed that 58.5% of the people who entered the Object Gallery went into the drawer section. However, when manipulatable objects were made available this increased to 82.3%. Chi-square analysis was used to determine whether the presence of manipulatable objects in the area increased the number of people who entered the area. It did (p < 0.05). Chi-square analysis was also used to determine whether entering the drawer section depended on age or sex. It was found that more children entered the drawer section than adults (p < 0.05) and significantly more female children and female adults entered as a result of intervention (p < 0.05). At the same time, more male children than adults entered after intervention (p < 0.05) than before. These data are supported by considerable curiosity research indicating that both children and adults are attracted to novel as well as complex stimuli which can be manipulated in both formal and free-choice environments. The data also support the growing movement to hands-on exhibits in natural history museums and science centers around the country, as well as hands-on classroom activities from the perspective of their attention attracting and holding power and their curiosity evoking characteristics. Whether these positive factors also lead to increased knowledge or skill development is a question yet to be explored.     

Pathways to Undergraduate Research Experiences: a Multi-Institutional Study

The positive impact of undergraduate research experiences on students’ post-secondary success is well-documented. However, these conclusions are drawn from undergraduate students who already participate; very little research has explored the pathways by which students enter these experiences. Using data from a multi-institutional survey, we examined students’ reasons for participating and differences across institutions and demographic groups. Overall, students cited social and experiential reasons as key motivators for participation and a perceived lack of research readiness as a key barrier. Differences were also found across academic year. Implications from this study address issues of access, preparation, and institutional policies around undergraduate research.     

Addressing the Challenges and Needs of English-Speaking Caribbean Immigrant Students: Guidelines for School Counselors

Caribbean students are among the distinct immigrant groups in U.S. public schools with particular needs to be addressed by school counselors. This article discusses the challenges Caribbean immigrant students face that create obstacles to their academic and personal/social success. Guidelines for school counselors are outlined, which can be used to meet the needs of Caribbean immigrant students and promote their healthy adjustment.     

Between the Structural and the Personal: Situated Sense-Makings of “Race” This research was supported by a grant from the MOSAIC Multicultural Center at San Jose State University.

Using a critical intercultural communication perspective and cultural studies interviewing method, this study traces individuals’ subjective sense-makings of diversity through the trope of “race.” Such sense-makings represent the key (and taken-for-granted) locus of the structural and personal where social actors live out the constructions of diversity and race in deeply felt ways. Our study reveals how individuals articulate and understand race via raceless diversity encodings (whereby race is seemingly stripped of its power inequalities, and all racial/ethnic groups are made equal) and racial pivoting (whereby participants both discursively pull away from and move toward race to suit their individual experiences).     

The contributions of parental management language to executive function in preschool children

This study investigated relations between preschoolers’ emergent executive function skills and their interactions with parents, with particular focus on the verbal utterances parents use to guide children's behavior (i.e., management language). Parent–child dyads (n = 127) were videotaped during a structured play task and the frequency of two types of management language, Direction (high control) and Suggestion (low control), was observed. Children's executive function was assessed using the Head–Toes–Knees–Shoulders (HTKS) task. Latent growth modeling was used to investigate relations between management language and the development of children's executive function. Direction language (i.e., commands) was negatively associated with children's age three executive function but not significantly related to the rate of executive function development over time. Conversely, Suggestion language (i.e., questions and statements that offer children some degree of choice) was positively related to executive function at age three but negatively related to growth. The potential importance of management language as a parenting behavior that contributes to various aspects of children's self-regulation during preschool and kindergarten is discussed.