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Sample records for high school cross-country

  1. Effects of Pelvic and Core Strength Training on High School Cross-Country Race Times.

    Science.gov (United States)

    Clark, Anne W; Goedeke, Maggie K; Cunningham, Saengchoy R; Rockwell, Derek E; Lehecka, Bryan J; Manske, Robert C; Smith, Barbara S

    2017-08-01

    Clark, AW, Goedeke, MK, Cunningham, SR, Rockwell, DE, Lehecka, BJ, Manske, RC, and Smith, BS. Effects of pelvic and core strength training on high school cross-country race times. J Strength Cond Res 31(8): 2289-2295, 2017-There is only limited research examining the effect of pelvic and core strength training on running performance. Pelvic and core muscle fatigue is believed to contribute to excess motion along frontal and transverse planes which decreases efficiency in normal sagittal plane running motions. The purpose of this study was to determine whether adding a 6-week pelvic and core strengthening program resulted in decreased race times in high school cross-country runners. Thirty-five high school cross-country runners (14-19 years old) from 2 high schools were randomly assigned to a strengthening group (experimental) or a nonstrengthening group (control). All participants completed 4 standardized isometric strength tests for hip abductors, adductors, extensors, and core musculature in a test-retest design. The experimental group performed a 6-week pelvic and core strengthening program along with their normal training. Participants in the control group performed their normal training without additional pelvic and core strengthening. Baseline, 3-week, and 6-week race times were collected using a repeated measures design. No significant interaction between experimental and control groups regarding decreasing race times and increasing pelvic and core musculature strength occurred over the 6-week study period. Both groups increased strength and decreased overall race times. Clinically significant findings reveal a 6-week pelvic and core stability strengthening program 3 times a week in addition to coach led team training may help decrease race times.

  2. Medial tibial stress syndrome in high school cross-country runners: incidence and risk factors.

    Science.gov (United States)

    Plisky, Melody S; Rauh, Mitchell J; Heiderscheit, Bryan; Underwood, Frank B; Tank, Robert T

    2007-02-01

    Prospective cohort. To determine (1) the cumulative seasonal incidence and overall injury rate of medial tibial stress syndrome (MTSS) and (2) risk factors for MTSS with a primary focus on the relationship between navicular drop values and MTSS in high school cross-country runners. MTSS is a common injury among runners. However, few studies have reported the injury rate and risk factors for MTSS among adolescent runners. Data collected included measurement of bilateral navicular drop and foot length, and a baseline questionnaire regarding the runner's height, body mass, previous running injury, running experience, and orthotic or tape use. Runners were followed during the season to determine athletic exposures (AEs) and occurrence of MTSS. The overall injury rate for MTSS was 2.8/1000 AEs. Although not statistically different, girls had a higher rate (4.3/1000 AEs) than boys (1.7/1000 AEs) (P = .11). Logistic regression modeling indicated that only gender and body mass index (BMI) were significantly associated with the occurrence of MTSS. However, when controlled for orthotic use, only BMI was associated with risk of MTSS. No significant associations were found between MTSS and navicular drop or foot length. Our findings suggest that navicular drop may not be an appropriate measure to identify runners who may develop MTSS during a cross-country season; thus, additional studies are needed to identify appropriate preseason screening tools.

  3. ASSOCIATION OF ISOMETRIC STRENGTH OF HIP AND KNEE MUSCLES WITH INJURY RISK IN HIGH SCHOOL CROSS COUNTRY RUNNERS.

    Science.gov (United States)

    Luedke, Lace E; Heiderscheit, Bryan C; Williams, D S Blaise; Rauh, Mitchell J

    2015-11-01

    High school cross country runners have a high incidence of overuse injuries, particularly to the knee and shin. As lower extremity strength is modifiable, identification of strength attributes that contribute to anterior knee pain (AKP) and shin injuries may influence prevention and management of these injuries. To determine if a relationship existed between isometric hip abductor, knee extensor and flexor strength and the incidence of AKP and shin injury in high school cross country runners. Sixty-eight high school cross country runners (47 girls, 21 boys) participated in the study. Isometric strength tests of hip abductors, knee extensors and flexors were performed with a handheld dynamometer. Runners were prospectively followed during the 2014 interscholastic cross country season for occurrences of AKP and shin injury. Bivariate logistic regression was used to examine risk relationships between strength values and occurrence of AKP and shin injury. During the season, three (4.4%) runners experienced AKP and 13 (19.1%) runners incurred a shin injury. Runners in the tertiles indicating weakest hip abductor (chi-square = 6.140; p=0.046), knee extensor (chi-square = 6.562; p=0.038), and knee flexor (chi-square = 6.140; p=0.046) muscle strength had a significantly higher incidence of AKP. Hip and knee muscle strength was not significantly associated with shin injury. High school cross country runners with weaker hip abductor, knee extensor and flexor muscle strength had a higher incidence of AKP. Increasing hip and knee muscle strength may reduce the likelihood of AKP in high school cross country runners. 2b.

  4. Bilateral Anterior Knee Pain in a High School Cross-Country Runner: An Atypical Etiology.

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    MacDonald, James

    2017-09-01

    Anterior knee pain is a common complaint found in distance runners, and can be the end result of a variety of benign processes. A 17-year-old female cross-country runner presented to a sports medicine clinic with insidious onset of bilateral patellofemoral pain (PFP). In the workup of the significant quadriceps weakness discovered on her initial examination, a principal contributing cause of her PFP, she was found to have a form of spinal muscular atrophy, an uncommon neurodegenerative disease that typically requires multidisciplinary medical care. Her case provides a good example for clinicians to consider, at times, an in-depth assessment of the root causes of benign conditions.

  5. Evaluating the predictability of distance race performance in NCAA cross country and track and field from high school race times in the United States.

    Science.gov (United States)

    Brusa, Jamie L

    2017-12-30

    Successful recruiting for collegiate track & field athletes has become a more competitive and essential component of coaching. This study aims to determine the relationship between race performances of distance runners at the United States high school and National Collegiate Athletic Association (NCAA) levels. Conditional inference classification tree models were built and analysed to predict the probability that runners would qualify for the NCAA Division I National Cross Country Meet and/or the East or West NCAA Division I Outdoor Track & Field Preliminary Round based on their high school race times in the 800 m, 1600 m, and 3200 m. Prediction accuracies of the classification trees ranged from 60.0 to 76.6 percent. The models produced the most reliable estimates for predicting qualifiers in cross country, the 1500 m, and the 800 m for females and cross country, the 5000 m, and the 800 m for males. NCAA track & field coaches can use the results from this study as a guideline for recruiting decisions. Additionally, future studies can apply the methodological foundations of this research to predicting race performances set at different metrics, such as national meets in other countries or Olympic qualifications, from previous race data.

  6. The impact of different cross-training modalities on performance and injury-related variables in high school cross country runners.

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    Paquette, Max R; Peel, Shelby A; Smith, Ross E; Temme, Mark; Dwyer, Jeffrey N

    2017-11-29

    There are many different types of aerobic cross-training modalities currently available. It is important to consider the effects that these different modalities have on running performance and injury risks. The purpose of this study was to compare movement quality, running economy and performance, injury-related biomechanical variables and, hip muscle strength before and after training with different cross-training modalities in high school runners. Thirty-one high school male runners trained for four weeks in one of three cross-training modalities, in addition to a running-only (RUN, n=9) group, for which training sessions replaced two easy runs per week: cycling (CYCLE; n=6), indoor elliptical (ELLIP; n=7) and, outdoor elliptical bike (EBIKE; n=9). Functional movement screen (FMS), running economy (RE), 3,000m performance, hip kinematics, hip muscle strength were assessed. Paired t-tests and Cohen's d effect sizes were used to assess mean differences for each variable before and after training within each group. EBIKE training was the only modality that improved FMS scores (d = 1.36) and RE before and after training (d = 0.48). All groups showed improvements in 3,000m performance but large effects were only found for the CYCLE (d = 1.50) and EBIKE (d = 1.41) groups. RUN (d = 1.25), CYCLE (d = 1.17) and, EBIKE (d = 0.82) groups showed improvements in maximal hip extensor strength. Outdoor cycling and elliptical bike cross-training may be the most effective cross-training modalities to incorporate in early season training to improve running performance in high school runners.

  7. "Living high - training low" vs. "living high - training high": erythropoietic responses and performance of adolescent cross-country skiers.

    Science.gov (United States)

    Christoulas, K; Karamouzis, M; Mandroukas, K

    2011-03-01

    To determine and compare the erythropoietic response and exercise performance of adolescent cross-country skiers, as a result of "living high-training high" (HH) and "living high-training low" (HL). Nine female and six male adolescent cross-country skiers volunteered to participate in separate trials. In the first trial (HH), the skiers lived and trained for 21 days at 1550-2050 m, while in the second trial (HL) they trained near sea level (450-500 m) but resided at 1550 m. All participants underwent maximal cycle ergometer tests for the determination of VO2max and cardiorespiratory parameters via an open circuit system at sea level before ascent to altitude, and 1-2 days after descent from altitude. Blood samples were drawn prior to and immediately after maximal cycle exercise testing, at sea level prior to ascent, on days 1 (D1) and 21 (D21) at altitude (1740 m), and 1-2 days post-altitude, for the determination of serum erythropoietin (EPO) concentration, haemoglobin (Hb), hematocrit (Ht), and red blood cell (RBC) volume. The results showed that both boys and girls cross-country skiers, significantly improved their sea level VO2max after 21 days of living at moderate altitude and training near sea level. The present study demonstrates that living at moderate altitude, 1550-2050 m and training low, near sea level (450-500 m) significantly increases VO2max and RBC mass for both boys and girls. Results indicate that applying the training concept "living high - training low" in adolescent athletes may improve their endurance performance.

  8. Pole lengths influence O2-cost during double poling in highly trained cross-country skiers.

    Science.gov (United States)

    Carlsen, Camilla Høivik; Rud, Bjarne; Myklebust, Håvard; Losnegard, Thomas

    2018-02-01

    In elite cross-country skiing, double poling is used in different terrain. This study compared O 2 -cost and kinematics during double poling with four different pole lengths [self-selected (SS), SS - 5 cm, SS + 5 cm, SS + 10 cm] at Low versus Moderate incline. Thirteen highly trained male cross-country skiers (mean ± SD 23 ± 3 years; 182 ± 4 cm; 77 ± 6 kg) completed eight submaximal trials with roller skis on a treadmill at two conditions: "Low incline" (1.7°; 4.5 m s -1 ) and "Moderate incline" (4.5°; 2.5 m s -1 ) with each of the four pole lengths. O 2 -cost and 3D body kinematics were assessed in each trial. In Low incline, SS + 10 cm induced a lower O 2 -cost than all the other pole lengths [P size (ES) 0.5-0.8], whereas no differences were found between the remaining pole lengths (P > 0.05; ES 0.2-0.4). In Moderate incline, significant differences between all pole lengths were found for O 2 -cost, with SS - 5 cm > SS > SS + 5 cm > SS + 10 cm (P differences in O 2 -cost between SS and the other pole lengths were greater in Moderate incline than Low incline (SS - 5 cm; 1.5%, ES 0.8, SS + 5 cm; 1.3%, ES 1.0, and SS + 10 cm; 1.9%, ES 1.0, all P difference was found in cycle, poling or reposition times between pole lengths. However, at both conditions a smaller total vertical displacement of center of mass was observed with SS + 10 cm compared to the other pole lengths. Increasing pole length from SS - 5 cm to SS + 10 cm during double poling induced lower O 2 -cost and this advantage was greater in Moderate compared to Low incline.

  9. Prayer Lessons to Promote Happiness among Kindergarten School Children: A Cross-Country Experimental Study

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    Pandya, Samta P.

    2018-01-01

    Based on a one-year longitudinal experimental study with 3,782 kindergarten school children across 15 countries, this article examines the association between prayer and happiness. Results show that the post-test scores on the faces scale were higher for the participant group who had taken the prayer lessons vis-à-vis the comparison group.…

  10. The Influence of Classroom Disciplinary Climate of Schools on Reading Achievement: A Cross-Country Comparative Study

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    Ning, Bo; Van Damme, Jan; Van Den Noortgate, Wim; Yang, Xiangdong; Gielen, Sarah

    2015-01-01

    Despite considerable interest in research and practice in the effect of classroom disciplinary climate of schools on academic achievement, little is known about the generalizability of this effect over countries. Using hierarchical linear analyses, the present study reveals that a better classroom disciplinary climate in a school is significantly…

  11. Cross-Country Comparisons of Inattentive, Hyperactive and Impulsive Behaviour in School-Based Samples of Young Children

    Science.gov (United States)

    Merrell, Christine; Styles, Irene; Jones, Paul; Tymms, Peter; Wildy, Helen

    2013-01-01

    This paper uses the Rasch measurement model to analyse data collected on children's attention, activity and impulsiveness at the end of their first year at school by teachers in England, Scotland and Australia. The analysis offers insights into differences in teachers' perceptions of children's behaviour between countries and changes with age. The…

  12. Low Schooling for Girls, Slower Growth for All? Cross-Country Evidence on the Effect of Gender Inequality in Education on Economic Development

    OpenAIRE

    Klasen, Stephan

    2002-01-01

    Using cross-country and panel regressions, this article investigates how gender inequality in education affects long-term economic growth. Such inequality is found to have an effect on economic growth that is robust to changes in specifications and controls for potential endogeneities. The results suggest that gender inequality in education directly affects economic growth by lowering the ...

  13. Why Electricity Demand Is Highly Income-Elastic in Spain: A Cross-Country Comparison Based on an Index-Decomposition Analysis

    Directory of Open Access Journals (Sweden)

    Julián Pérez-García

    2017-03-01

    Full Text Available Since 1990, Spain has had one of the highest elasticities of electricity demand in the European Union. We provide an in-depth analysis into the causes of this high elasticity, and we examine how these same causes influence electricity demand in other European countries. To this end, we present an index-decomposition analysis of growth in electricity demand which allows us to identify three key factors in the relationship between gross domestic product (GDP and electricity demand: (i structural change; (ii GDP growth; and (iii intensity of electricity use. Our findings show that the main differences in electricity demand elasticities across countries and time are accounted for by the fast convergence in residential per capita electricity consumption. This convergence has almost concluded, and we expect the Spanish energy demand elasticity to converge to European standards in the near future.

  14. Effects of Sprint versus High-Intensity Aerobic Interval Training on Cross-Country Mountain Biking Performance: A Randomized Controlled Trial.

    Directory of Open Access Journals (Sweden)

    Allan Inoue

    Full Text Available The current study compared the effects of high-intensity aerobic training (HIT and sprint interval training (SIT on mountain biking (MTB race simulation performance and physiological variables, including peak power output (PPO, lactate threshold (LT and onset of blood lactate accumulation (OBLA.Sixteen mountain bikers (mean ± SD: age 32.1 ± 6.4 yr, body mass 69.2 ± 5.3 kg and VO2max 63.4 ± 4.5 mL∙kg(-1∙min(-1 completed graded exercise and MTB performance tests before and after six weeks of training. The HIT (7-10 x [4-6 min--highest sustainable intensity / 4-6 min-CR100 10-15] and SIT (8-12 x [30 s--all-out intensity / 4 min--CR100 10-15] protocols were included in the participants' regular training programs three times per week.Post-training analysis showed no significant differences between training modalities (HIT vs. SIT in body mass, PPO, LT or OBLA (p = 0.30 to 0.94. The Cohen's d effect size (ES showed trivial to small effects on group factor (p = 0.00 to 0.56. The interaction between MTB race time and training modality was almost significant (p = 0.08, with a smaller ES in HIT vs. SIT training (ES = -0.43. A time main effect (pre- vs. post-phases was observed in MTB race performance and in several physiological variables (p = 0.001 to 0.046. Co-variance analysis revealed that the HIT (p = 0.043 group had significantly better MTB race performance measures than the SIT group. Furthermore, magnitude-based inferences showed HIT to be of likely greater benefit (83.5% with a lower probability of harmful effects (0.8% compared to SIT.The results of the current study suggest that six weeks of either HIT or SIT may be effective at increasing MTB race performance; however, HIT may be a preferable strategy.ClinicalTrials.gov NCT01944865.

  15. Effects of Sprint versus High-Intensity Aerobic Interval Training on Cross-Country Mountain Biking Performance: A Randomized Controlled Trial.

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    Inoue, Allan; Impellizzeri, Franco M; Pires, Flávio O; Pompeu, Fernando A M S; Deslandes, Andrea C; Santos, Tony M

    2016-01-01

    The current study compared the effects of high-intensity aerobic training (HIT) and sprint interval training (SIT) on mountain biking (MTB) race simulation performance and physiological variables, including peak power output (PPO), lactate threshold (LT) and onset of blood lactate accumulation (OBLA). Sixteen mountain bikers (mean ± SD: age 32.1 ± 6.4 yr, body mass 69.2 ± 5.3 kg and VO2max 63.4 ± 4.5 mL∙kg(-1)∙min(-1)) completed graded exercise and MTB performance tests before and after six weeks of training. The HIT (7-10 x [4-6 min--highest sustainable intensity / 4-6 min-CR100 10-15]) and SIT (8-12 x [30 s--all-out intensity / 4 min--CR100 10-15]) protocols were included in the participants' regular training programs three times per week. Post-training analysis showed no significant differences between training modalities (HIT vs. SIT) in body mass, PPO, LT or OBLA (p = 0.30 to 0.94). The Cohen's d effect size (ES) showed trivial to small effects on group factor (p = 0.00 to 0.56). The interaction between MTB race time and training modality was almost significant (p = 0.08), with a smaller ES in HIT vs. SIT training (ES = -0.43). A time main effect (pre- vs. post-phases) was observed in MTB race performance and in several physiological variables (p = 0.001 to 0.046). Co-variance analysis revealed that the HIT (p = 0.043) group had significantly better MTB race performance measures than the SIT group. Furthermore, magnitude-based inferences showed HIT to be of likely greater benefit (83.5%) with a lower probability of harmful effects (0.8%) compared to SIT. The results of the current study suggest that six weeks of either HIT or SIT may be effective at increasing MTB race performance; however, HIT may be a preferable strategy. ClinicalTrials.gov NCT01944865.

  16. Cross-country VFR crashes: pilot and contextual factors.

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    O'Hare, David; Owen, Douglas

    2002-04-01

    General Aviation (GA) cross-country crashes, particularly those involving weather, continue to be a major source of fatalities, with a fatality rate more than four times greater than for GA crashes in general. There has been much speculation and little solid evidence on the causes of these crashes. We have designed a program of laboratory and database research into the causes of cross-country weather-related crashes including an analysis of air crashes in New Zealand between 1988 and 2000. There were 1308 reported occurrences in this period. We examined in detail 77 crashes where it could be determined that the aircraft was on a cross-country flight. In our first analysis we compared the characteristics of crashes that occurred in response to externally driven failures with crashes where the aircraft continued to be flown at the pilot's discretion up until the point of the crash. Clear differences were found for visibility, altitude, crash severity, and for several pilot characteristics. These differences are highly consistent with those found for previous research on pilot characteristics and crash involvement. In the second analysis we made comparisons between the weather-related and nonweather-related crashes in the discretionary control group and between subcategories of weather-related crashes. These data show that weather-related crashes occur further into the flight and closer to the planned destination than other kinds of cross-country crashes in GA. Pilots involved in these crashes are younger and have more recent flight time than pilots involved in other crashes. Their increased involvement cannot be explained simply by exposure (flight-time) but must be due to other factors.

  17. Decomposing Cross-Country Differences in Skills:

    DEFF Research Database (Denmark)

    Albæk, Karsten; Rosdahl, Anders

    2017-01-01

    This paper performs multivariate analysis of skill differences in the Nordic countries as assessed by OECD’s PIACC survey of adults aged 16-65. We decompose the differences in average skills between Finland and each of the three Scandinavian countries into a component that is due to different skill...... levels in subgroups of the population and a component that is due to differences in the composition of subgroups. The decompositions show that the high Finnish average skill level compared to the three Scandinavian countries can be attributed the low share of immigrants in Finland and to high scores...... among Finns with high school and less than high school education. The Finnish average score is pulled substantially downwards as a consequence of the low numeracy skill level among older Finns, which is consistent with an increase in the quantity or quality of Finnish education over time, relative...

  18. Cross-Country Individual Participant Analysis of 4.1 Million Singleton Births in 5 Countries with Very High Human Development Index Confirms Known Associations but Provides No Biologic Explanation for 2/3 of All Preterm Births.

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    Ferrero, David M; Larson, Jim; Jacobsson, Bo; Di Renzo, Gian Carlo; Norman, Jane E; Martin, James N; D'Alton, Mary; Castelazo, Ernesto; Howson, Chris P; Sengpiel, Verena; Bottai, Matteo; Mayo, Jonathan A; Shaw, Gary M; Verdenik, Ivan; Tul, Nataša; Velebil, Petr; Cairns-Smith, Sarah; Rushwan, Hamid; Arulkumaran, Sabaratnam; Howse, Jennifer L; Simpson, Joe Leigh

    2016-01-01

    Preterm birth is the most common single cause of perinatal and infant mortality, affecting 15 million infants worldwide each year with global rates increasing. Understanding of risk factors remains poor, and preventive interventions have only limited benefit. Large differences exist in preterm birth rates across high income countries. We hypothesized that understanding the basis for these wide variations could lead to interventions that reduce preterm birth incidence in countries with high rates. We thus sought to assess the contributions of known risk factors for both spontaneous and provider-initiated preterm birth in selected high income countries, estimating also the potential impact of successful interventions due to advances in research, policy and public health, or clinical practice. We analyzed individual patient-level data on 4.1 million singleton pregnancies from four countries with very high human development index (Czech Republic, New Zealand, Slovenia, Sweden) and one comparator U.S. state (California) to determine the specific contribution (adjusting for confounding effects) of 21 factors. Both individual and population-attributable preterm birth risks were determined, as were contributors to cross-country differences. We also assessed the ability to predict preterm birth given various sets of known risk factors. Previous preterm birth and preeclampsia were the strongest individual risk factors of preterm birth in all datasets, with odds ratios of 4.6-6.0 and 2.8-5.7, respectively, for individual women having those characteristics. In contrast, on a population basis, nulliparity and male sex were the two risk factors with the highest impact on preterm birth rates, accounting for 25-50% and 11-16% of excess population attributable risk, respectively (pbirth within each country lacks a plausible biologic explanation, and 63% of difference between countries cannot be explained with known factors; thus, research is necessary to elucidate the underlying

  19. Kick, Glide, Pole! Cross-Country Skiing Fun (Part II)

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    Duoos, Bridget A.

    2012-01-01

    Part I of Kick, Glide, Pole! Cross-Country Skiing Fun, which was published in last issue, discussed how to select cross-country ski equipment, dress for the activity and the biomechanics of the diagonal stride. Part II focuses on teaching the diagonal stride technique and begins with a progression of indoor activities. Incorporating this fun,…

  20. The validity of vignettes in cross country health studies

    DEFF Research Database (Denmark)

    Pozzoli, Dario; Gupta, Nabanita Datta; Kristensen, Nicolai

    Cross-country comparisons of subjective assessments may be ham-pered by sub-population speci.c response style. To correct for this, the use of vignettes has become increasingly popular - notably within cross-country health studies. However, the validity of vignettes as a means to re-scale across ...... that the assumption of RC is not innocous and that our extended model improves the fit and significantly changes the cross-country rankings of health vis-á-vis the standard Chopit model.......Cross-country comparisons of subjective assessments may be ham-pered by sub-population speci.c response style. To correct for this, the use of vignettes has become increasingly popular - notably within cross-country health studies. However, the validity of vignettes as a means to re-scale across...

  1. A cross-country Exchange Market Pressure (EMP) dataset.

    Science.gov (United States)

    Desai, Mohit; Patnaik, Ila; Felman, Joshua; Shah, Ajay

    2017-06-01

    The data presented in this article are related to the research article titled - "An exchange market pressure measure for cross country analysis" (Patnaik et al. [1]). In this article, we present the dataset for Exchange Market Pressure values (EMP) for 139 countries along with their conversion factors, ρ (rho). Exchange Market Pressure, expressed in percentage change in exchange rate, measures the change in exchange rate that would have taken place had the central bank not intervened. The conversion factor ρ can interpreted as the change in exchange rate associated with $1 billion of intervention. Estimates of conversion factor ρ allow us to calculate a monthly time series of EMP for 139 countries. Additionally, the dataset contains the 68% confidence interval (high and low values) for the point estimates of ρ 's. Using the standard errors of estimates of ρ 's, we obtain one sigma intervals around mean estimates of EMP values. These values are also reported in the dataset.

  2. Motor abilities and anthropometrics in youth cross-country skiing.

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    Stöggl, R; Müller, E; Stöggl, T

    2015-02-01

    The purposes were to validate whether general motor abilities and anthropometrics are determinants of youth cross-country (XC) skiing performance; evaluate gender-specific differences; and to establish noninvasive diagnostics. Fifty-one youth XC skiers (34 boys; 13.8 ± 0.6 years and 17 girls; 13.4 ± 0.9 years) performed motor skill and laboratory tests, and anthropometric data were collected and correlated with XC skiing performance. Anthropometrics and maturity status were related to boys but not to girls XC skiing performance. Push-ups and 20-m sprint were correlated to XC skiing performance in both boys and girls. XC skiing performance of boys was predominantly influenced by upper body and trunk strength capacities (medicine ball throw, push-ups, and pull-ups) and jumping power (standing long and triple jump), whereas XC skiing of girls was mainly influenced by aerobic capacities (3000-m run). Laboratory measures did not reveal greater correlations to XC skiing performance compared with simple test concepts of speed, strength, and endurance. Maturity was a major confounding variable in boys but not girls. Use of noninvasive simple test concepts for determination of upper body strength, speed, and endurance represent practicable support for ski clubs, schools, or skiing federations in the guidance and evaluation of young talent, being aware of the effect of maturity especially in boys. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  3. DoD Science and Engineering Apprenticeship Program for High School Students, 1996-󈨥 Activities

    Science.gov (United States)

    1997-05-01

    Science Fair, A Honor Roll Baseball, Cross Country, Athletics, Weightlifting , Computers Robert Sidney Cox, III Other Male Leon High School...Sports Medicine Honor Roll Weightlifting , Swimming Marcus Mills Black Male Godby High School Florida State University Undecided FSU Incentive...paid for by the program. Seven of the students took a Psy- chology course, one a Nutritional Science class and two a Mathematics course. Eight of these

  4. Cross-country Evidence on the Demand for Money

    OpenAIRE

    Serletis , Apostolos; Vaccaro , Jason

    2006-01-01

    In this article we examine money demand issues using cross-country data, for 48 countries over the 1980-1995 period. In particular, we investigate conventional money demand functions, for both narrow and broad aggregates, and the role that institutions, financial structure and financial development may have in the demand for money. On the basis of possible heterogeneity within the cross-country data set, we exploit Bayesian classification and finite mixture models to partition the data based ...

  5. Does Parental Educational Level Predict Drop-Out from Upper Secondary School for 16- to 24-Year-Olds when Basic Skills Are Accounted For? A Cross Country Comparison

    Science.gov (United States)

    Lundetrae, Kjersti

    2011-01-01

    Drop-out from upper secondary school is considered a widespread problem, closely connected with youth unemployment. The aim of the current study was to examine whether parents' level of education predicted drop-out for 16-24-year-olds when accounting for basic skills. For this purpose, data from the Norwegian (n = 996) and American (n = 641)…

  6. Journalism Beyond High School.

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    Turner, Sally

    2001-01-01

    Discusses the shift from high school journalism to college journalism for students. Describes the role of the high school journalism advisor in that process. Offers checklists for getting to know a college publication. Outlines ways high school journalism teachers can take advantage of journalism resources available at local colleges and…

  7. Evaluating High School IT

    Science.gov (United States)

    Thompson, Brett A.

    2004-01-01

    Since its inception in 1997, Cisco's curriculum has entered thousands of high schools across the U.S. and around the world for two reasons: (1) Cisco has a large portion of the computer networking market, and thus has the resources for and interest in developing high school academies; and (2) high school curriculum development teams recognize the…

  8. Early College High Schools

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    Dessoff, Alan

    2011-01-01

    For at-risk students who stand little chance of going to college, or even finishing high school, a growing number of districts have found a solution: Give them an early start in college while they still are in high school. The early college high school (ECHS) movement that began with funding from the Bill and Melinda Gates Foundation 10 years ago…

  9. Inventive Activity of Researchers: Cross-Country Rating Assessments

    Directory of Open Access Journals (Sweden)

    Tatyana Ivanovna Volkova

    2017-03-01

    Full Text Available In recent years, the study of the research capacity of the country and regions has become more active not only from the point of view of their leading components (personnel, financial, information, organizational, material-and-technical ones but also from the perspective of the assessment of productivity and effectiveness of researchers’ work. In the cross-country analysis, the certain highly aggregative parameters, which values, as a rule, are not in favour of Russia, are used. At the same time, at profound studying of this topic, these estimates cannot represent correctly the real trends of inventive activity in the scientific and technological sphere of the country and its regions. Moreover, the measurement of the researchers’ creative potential realization is carried out mainly through the assessment systems of their printing activity. Little attention is paid to the problem of the rating assessments of the researchers’ inventive and patent activity and its products from a cross-country perspective (especially to the detailed ones as well as to its institutional determinants. Therefore, the authors have chosen this subject-matter of the research. Its empirical basis is the statistical materials of both the national database and those which are recognized by the world scientific community. This research has both theoretical and methodological orientations. The purpose is the development of methodological and methodical tools of the research and assessment of researchers’ inventive activity including methodological support of cross-country comparative assessments. The authors have based the hypothesis on their previous research: in the conditions of the decreasing level of financial security, continuous reduction of a number of researchers, institutional restrictions and contradictions, the inventive activity of national researchers is still exist, and in a number of its leading parameters is implemented at the level of the advanced

  10. Bilateral femoral supracondylar stress fractures in a cross country runner.

    Science.gov (United States)

    Ross, Kate; Fahey, Mark

    2008-08-01

    Several high-risk factors lead to stress fractures. They include excessive training in athletes leading to overuse injuries, nutritional deficiencies, and endocrine disorders. While stress fractures are common, bilateral stress fractures are rarely seen. Few cases have been reported of bilateral femoral stress fractures in young athletes. This article presents a case of a 14-year-old cross country runner with a bilateral femoral supracondylar stress fracture. He presented with bilateral supracondylar stress fractures from running. The patient followed a strict vegan diet, but his parents stated that, to their knowledge, he was getting adequate protein and calcium. Treatment consisted of decreased activity to pain-free levels with acetaminophen for pain. Low-impact conditioning such as swimming and bicycling was allowed. Hamstring and quadricep stretching was suggested. Nutritional consultation was obtained to ensure appropriate nutrition on a vegan diet. At 1-month follow-up, he was pain free and allowed to proceed with a gradual return to running activities. In this case, the onset of a new workout routine was intolerable for this patient's low bone density, causing insufficiency fractures. Appropriate vegan diets were not associated with stress fracture in our literature review. He may have had an inadequate diet prior to this injury. As in this case, full recovery can be made after this rest period, and the patient may return to his or her original activity safely. In young athletes, diet and nutrition must be kept in mind.

  11. A cross-country Exchange Market Pressure (EMP dataset

    Directory of Open Access Journals (Sweden)

    Mohit Desai

    2017-06-01

    Full Text Available The data presented in this article are related to the research article titled - “An exchange market pressure measure for cross country analysis” (Patnaik et al. [1]. In this article, we present the dataset for Exchange Market Pressure values (EMP for 139 countries along with their conversion factors, ρ (rho. Exchange Market Pressure, expressed in percentage change in exchange rate, measures the change in exchange rate that would have taken place had the central bank not intervened. The conversion factor ρ can interpreted as the change in exchange rate associated with $1 billion of intervention. Estimates of conversion factor ρ allow us to calculate a monthly time series of EMP for 139 countries. Additionally, the dataset contains the 68% confidence interval (high and low values for the point estimates of ρ’s. Using the standard errors of estimates of ρ’s, we obtain one sigma intervals around mean estimates of EMP values. These values are also reported in the dataset.

  12. Cross-country learning in public procurement : An exploratory study

    NARCIS (Netherlands)

    Nijboer, Kimberly; Senden, Shirin; Telgen, Jan

    2017-01-01

    All countries use public procurement to some degree to further policy objectives such as sustainability, innovation, fighting fraud and corruption, value for taxpayers’ money etc. Countries may learn from past successes and failures in other countries while implementing these policies: cross-country

  13. Maximum Power Training and Plyometrics for Cross-Country Running.

    Science.gov (United States)

    Ebben, William P.

    2001-01-01

    Provides a rationale for maximum power training and plyometrics as conditioning strategies for cross-country runners, examining: an evaluation of training methods (strength training and maximum power training and plyometrics); biomechanic and velocity specificity (role in preventing injury); and practical application of maximum power training and…

  14. Cross-Country Evidence on Teacher Performance Pay

    Science.gov (United States)

    Woessmann, Ludger

    2011-01-01

    The general-equilibrium effects of performance-related teacher pay include long-term incentive and teacher-sorting mechanisms that usually elude experimental studies but are captured in cross-country comparisons. Combining country-level performance-pay measures with rich PISA-2003 international achievement micro data, this paper estimates…

  15. Human Capital and Cross-Country Comparison of Inequality

    NARCIS (Netherlands)

    J.M.A. Viaene (Jean-Marie); I. Zilcha (Itzhak)

    2002-01-01

    textabstractThe paper studies the effects of cross-country differences in the production process of human capital on income distribution and growth. Our overlapping gen- erations economy has the following features: (1) consumers are heterogenous with respect to parental human capital and wealth; (2)

  16. Cross-Country Private Saving Heterogeneity and Culture

    NARCIS (Netherlands)

    de Castro Campos, M.; Kool, C.J.M.; Muysken, J.

    2013-01-01

    Motivated by the dominant role of cross-country heterogeneity in private saving in the creation of Eurozone imbalances over the past decade, we empirically investigate the determinants of private saving for a sample of 30 OECD countries over the period 1990-2010. In addition to standard

  17. Fixing High Schools

    Science.gov (United States)

    Perkins-Gough, Deborah

    2005-01-01

    Reports from national education organizations in the US indicate the sorry state of high schools in the country that are accused of failing to adequately prepare their graduates for college or for the workforce, highlighting what is a serious problem in light of the troubled state of the US economy. The need to improve high schools is urgent and…

  18. High School Principals and the High School Journalism Program.

    Science.gov (United States)

    Peterson, Jane W.

    A study asked selected high school principals to respond to statements about the value of high school journalism to the high school student and about the rights and responsibilities of the high school journalist. These responses were then checked against such information as whether or not the high school principal had worked on a high school…

  19. Do Maximal Roller Skiing Speed and Double Poling Performance Predict Youth Cross-Country Skiing Performance?

    Directory of Open Access Journals (Sweden)

    Roland Stöggl, Erich Müller, Thomas Stöggl

    2017-09-01

    Full Text Available The aims of the current study were to analyze whether specific roller skiing tests and cycle length are determinants of youth cross-country (XC skiing performance, and to evaluate sex specific differences by applying non-invasive diagnostics. Forty-nine young XC skiers (33 boys; 13.8 ± 0.6 yrs and 16 girls; 13.4 ± 0.9 yrs performed roller skiing tests consisting of both shorter (50 m and longer durations (575 m. Test results were correlated with on snow XC skiing performance (PXC based on 3 skating and 3 classical distance competitions (3 to 6 km. The main findings of the current study were: 1 Anthropometrics and maturity status were related to boys’, but not to girls’ PXC; 2 Significant moderate to acceptable correlations between girls’ and boys’ short duration maximal roller skiing speed (double poling, V2 skating, leg skating and PXC were found; 3 Boys’ PXC was best predicted by double poling test performance on flat and uphill, while girls’ performance was mainly predicted by uphill double poling test performance; 4 When controlling for maturity offset, boys’ PXC was still highly associated with the roller skiing tests. The use of simple non-invasive roller skiing tests for determination of PXC represents practicable support for ski clubs, schools or skiing federations in the guidance and evaluation of young talent.

  20. High School Book Fairs

    Science.gov (United States)

    Fitzgerald, Marianne

    2006-01-01

    Many secondary students have given up the joy of reading. When asked why they don't read for pleasure, students came up with many different reasons, the first being lack of time. High school students are busy with after school jobs, sports, homework, etc. With the growing number of students enrolled in AP classes, not only is there not much time…

  1. Investing in High School

    Science.gov (United States)

    Green, Daniel G.

    2012-01-01

    Strapped for cash, a Massachusetts high school creates its own venture capital fund to incentivize teachers to create programs that improve student learning. The result has been higher test scores and higher job satisfaction. One important program is credited with helping close the achievement gap at the school, while others have helped ambitious…

  2. Cross-Country Skiing Injuries and Training Methods.

    Science.gov (United States)

    Nagle, Kyle B

    2015-01-01

    Cross-country skiing is a low injury-risk sport that has many health benefits and few long-term health risks. Some concern exists that cross-country skiing may be associated with a higher incidence of atrial fibrillation; however, mortality rates among skiers are lower than those among the general population. While continuing to emphasize aerobic and anaerobic training, training methods also should promote ski-specific strength training to increase maximum force and its rate of delivery and to build muscular endurance to maintain that power through a race. Multiple tests are available to monitor training progress. Which tests are most appropriate depends on the specific events targeted. In addition to laboratory-based tests, there also are many simpler, more cost-effective tests, such as short time trials, that can be used to monitor training progress and predict performance particularly at the junior skier level where access and cost may be more prohibitive.

  3. Does financial literacy improve financial inclusion? Cross country evidence

    OpenAIRE

    Grohmann, Antonia; Klühs, Theres; Menkhoff, Lukas

    2017-01-01

    While financial inclusion is typically addressed by improving the financial infrastructure we show that financial literacy, representing the demand-side of financial markets, also has a beneficial effect. We study this effect at the cross-country level, which allows to consider institutional variation. Regarding "access to finance", financial infrastructure and financial literacy are mainly substitutes. However, regarding the "use of financial services", the effect of higher financial literac...

  4. Human Capital and Cross-Country Comparison of Inequality

    OpenAIRE

    Jean-Marie Viaene; Itzhak Zilcha

    2002-01-01

    textabstractThe paper studies the effects of cross-country differences in the production process of human capital on income distribution and growth. Our overlapping gen- erations economy has the following features: (1) consumers are heterogenous with respect to parental human capital and wealth; (2) intergenerational transfers take place via parental education and, public investments in education financed by taxes (possibly, with a level determined by majority voting); (3) due to investment i...

  5. Credit channels in Europe: a cross-country investigation

    Directory of Open Access Journals (Sweden)

    G.J. DE BONDT

    1999-09-01

    Full Text Available The work provides an economic analysis of the monetary transmission mechanism in Europe. The author reviews the literature on the money and credit view before describing cross-country differences in credit channel indicators and examining the existence of credit channels by distinguishing between households and firms. The relative importance of a bank lending and balance sheet channel is discussed by assessing impulse response functions from a vector error correction model.

  6. The cross-country implications of alternative climate policies

    International Nuclear Information System (INIS)

    Li, Aijun; Du, Nan; Wei, Qian

    2014-01-01

    Because of worldwide growing concerns about global climate change, great interest has been expressed in the potential of alternative climate policies to reduce global carbon emissions. In this paper, we compare cross-country implications of alternative climate policies, including unilateral and multilateral climate policies. Our main findings are as follows. Firstly, there are large differences in cross-country effects of alternative unilateral climate policies, when the same given carbon emission reductions are achieved in each abating country respectively. Meanwhile, cross-border externalities undermine efficiency of unilateral climate policies. Secondly, there are significant differences in cross-country implications of alternative multilateral climate policies, when the same global emission reductions are allocated in several different ways among abating countries. Thirdly, it is difficult to reach a stable global climate treaty, since any abating country has the incentive to argue for small carbon emission reductions. Finally, multilateral climate policies can reduce the negative impacts of cross-border externalities, but cannot cure all cross-border externalities. Looking ahead, it will be a great policy challenge for the world to reduce carbon emissions in a cost-effective way. - highlights: • We compare impacts of unilateral climate policies across countries. • We compare effects of alternative multilateral climate policies. • We explore whether cross-border externalities disappear under multilateral climate policies

  7. Timetabling at High Schools

    DEFF Research Database (Denmark)

    Sørensen, Matias

    on the publicly available XHSTT format for modeling instances and solutions of the HSTP) and the Danish High School Timetabling Problem (DHSTP). For both problems a complex Mixed-Integer Programming (MIP) model is developed, and in both cases are empirical tests performed on a large number of real-life datasets......High school institutions face a number of important planning problems during each schoolyear. This Ph.D. thesis considers two of these planning problems: The High School Timetabling Problem (HSTP) and the Consultation Timetabling Problem (CTP). Furthermore a framework for handling various planning....... The second part contains the main scienti_c papers composed during the Ph.D. study. The third part of the thesis also contains scienti_c papers, but these are included as an appendix. In the HSTP, the goal is to obtain a timetable for the forthcoming school-year. A timetable consists of lectures scheduled...

  8. A Comparison of Frontal Theta Activity During Shooting among Biathletes and Cross-Country Skiers before and after Vigorous Exercise.

    Directory of Open Access Journals (Sweden)

    Harri Luchsinger

    Full Text Available Previous studies using electroencephalography (EEG to monitor brain activity have linked higher frontal theta activity to more focused attention and superior performance in goal-directed precision tasks. In biathlon, shooting performance requires focused attention after high-intensity cross-country skiing.To compare biathletes (serving as experts and cross-country skiers (novices and examine the effect of vigorous exercise on frontal theta activity during shooting.EEG frontal theta (4-7 Hz activity was compared between nine biathletes and eight cross-country skiers at comparable skiing performance levels who fired 100 shots on a 5-m indoor shooting range in quiescent condition followed by 20 shots after each of five 6-min high-intensity roller skiing sessions in the skating technique on a treadmill.Biathletes hit 80±14% and 81±10% before and after the roller skiing sessions, respectively. For the cross-country skiers these values were significantly lower than for the biathletes and amounted to 39±13% and 44±11% (p<0.01. Biathletes had on average 6% higher frontal theta activity during shooting as compared to cross-country skiers (F1,15 = 4.82, p = 0.044, but no significant effect of vigorous exercise on frontal theta activity in either of the two groups were found (F1,15 = 0.14, p = 0.72.Biathletes had significantly higher frontal theta activity than cross-country skiers during shooting, indicating higher focused attention in biathletes. Vigorous exercise did not decrease shooting performance or frontal theta activity during shooting in biathletes and cross-country skiers.

  9. Transference of 3D accelerations during cross country mountain biking.

    Science.gov (United States)

    Macdermid, Paul W; Fink, Philip W; Stannard, Stephen R

    2014-06-03

    Investigations into the work demands of Olympic format cross country mountain biking suggest an incongruent relationship between work done and physiological strain experienced by participants. A likely but unsubstantiated cause is the extra work demand of muscle damping of terrain/surface induced vibrations. The purpose of this study was to describe the relationship between vibration mechanics and their interaction with terrain, bicycle and rider during a race pace effort on a cross country mountain bike track, on both 26″ and 29″ wheels. Participants completed one lap of a cross country track using 26″ and 29″ wheels, at race pace. Power, cadence, speed, heart rate and geographical position were sampled and logged every second for control purposes. Tri-axial accelerometers located on the bicycle and rider, recorded accelerations (128Hz) and were used to quantify vibrations experienced during the whole lap and over terrain sections (uphill and downhill). While there were no differences in power output (p=0.3062) and heart rate (p=0.8423), time to complete the lap was significantly (p=0.0061) faster on the 29″ wheels despite increased vibrations in the larger wheels (p=0.0020). Overall accelerometer data (RMS) showed location differences (pbike-body compared to those experienced at the lower back and head. The reduction in accelerations at both the lower back and head are imperative for injury prevention and demonstrates an additional non-propulsive, muscular, challenge to riding. Stress was greatest during downhill sections as acceleration differences between locations were greater when compared to uphill sections, and thus possibly prevent the recovery processes that may occur during non-propulsive load. Copyright © 2014 Elsevier Ltd. All rights reserved.

  10. Corruption costs lives: evidence from a cross-country study.

    Science.gov (United States)

    Li, Qiang; An, Lian; Xu, Jing; Baliamoune-Lutz, Mina

    2018-01-01

    This paper investigates the effect of corruption on health outcomes by using cross-country panel data covering about 150 countries for the period of 1995 to 2012. We employ ordinary least squares (OLS), fixed-effects and two-stage least squares (2SLS) estimation methods, and find that corruption significantly increases mortality rates, and reduces life expectancy and immunization rates. The results are consistent across different regions, gender, and measures of corruption. The findings suggest that reducing corruption can be an effective method to improve health outcomes.

  11. Stress fractures in elite cross-country athletes.

    Science.gov (United States)

    Laker, Scott R; Saint-Phard, Deborah; Tyburski, Mark; Van Dorsten, Brent

    2007-04-01

    This retrospective and comparative survey investigates an unusual number of stress fractures seen within a Division I college cross-country team. An anonymous questionnaire-designed to observe factors known to increase stress fracture incidence-was distributed to members of the current and previous seasons' teams. Running surface, sleep hours, intake of calcium, and shoe type were among the factors investigated. Eleven lower extremity stress fractures were found in nine athletes. Athletes with stress fractures reported significantly fewer workouts per week on the new track. All other study parameters had no statistically significant effect on stress fractures in these athletes.

  12. Dual Campus High School

    Directory of Open Access Journals (Sweden)

    Carmen P. Mombourquette

    2013-04-01

    Full Text Available September 2010 witnessed the opening of the first complete dual campus high school in Alberta. Catholic Central High School, which had been in existence since 1967 in one building, now offered courses to students on two campuses. The “dual campus” philosophy was adopted so as to ensure maximum program flexibility for students. The philosophy, however, was destined to affect student engagement and staff efficacy as the change in organizational structure, campus locations, and course availability was dramatic. Changing school organizational structure also had the potential of affecting student achievement. A mixed-methods study utilizing engagement surveys, efficacy scales, and interviews with students and teachers was used to ascertain the degree of impact. The results of the study showed that minimal impact occurred to levels of student engagement, minor negative impact to staff efficacy, and a slight increase to student achievement results.

  13. Reshaping High School English.

    Science.gov (United States)

    Pirie, Bruce

    This book takes up the question of what shape high school English studies should take in the coming years. It describes an English program that blends philosophical depth with classroom practicality. Drawing examples from commonly taught texts such as "Macbeth,""To Kill a Mockingbird," and "Lord of the Flies," the…

  14. Balance-related exercise as a preparation to cross-country skiing practice in visually impaired children

    OpenAIRE

    Chmelíčková, Hana

    2008-01-01

    Title: Balance-related excercise as a preparation to cross-country skiing practice in visually impaired children. Objectives of the Thesis: The goal of this thesis is to test the possibilitiy of implementation of selected balance- related excercise in visually impaired children. Method: The testing pool consisted of six pupils attending the Special school for Visually Impaired Children between 14 and 15 years of age. Over the period of ten weeks, selected exercise geared towards the cross-cou...

  15. The Happy Few. Cross-Country Evidence on Social Capital and Life Satisfaction

    DEFF Research Database (Denmark)

    Bjørnskov, Christian

    2003-01-01

    I examine why the populations of certain countries are so much more satisfied with their lives than the rest of the world. In cross-country analyses, income per capita, economic uncertainty and expectations for the future are robust predictors of happiness while a social capital measure emerges...... strongly and robustly associated with happiness. Moreover, the effect of investing in social capital is remarkably strong compared to the alternatives. I conclude that the populations in a few Northern European countries are probably the happiest in the world because of their high levels of social capital...

  16. The attitude of the faculty of sport and physical education students toward cross-country running

    Directory of Open Access Journals (Sweden)

    Juhas Irina

    2011-01-01

    Full Text Available The syllabus of the track and field subject at the Faculty of Sport and Physical Education includes cross-country running - running in nature. The main objective of this study was to determine the structure and intensity of students' attitude toward the cross-country running. Besides, the objective was to check the connection of the students' attitude towards the cross-country running and the achieved results of cross-country running, as well as of doing sport and recreational running. The sample comprised 69 students of the second year of studies who attended the cross-country running classes. For measuring the attitude toward the cross-country running, the Connotative differential instrument was used consisting of 15 pairs of opposite adjectives presented in a form of seven-part bipolar scale grouped into three dimensions: affective, cognitive and conative. This instrument was applied within an extensive questionnaire which included questions about doing sports, jogging, as well as the results of cross-country running at the end of the teaching period. The descriptive analysis has shown that students have a positive attitude of moderate intensity toward cross-country running, observed through all three dimensions of attitude. The correlation analysis between the dimensions of attitude toward cross country running and the results achieved at cross country running showed that the correlations are negative and statistically significant, suggesting that if the result of running is better, the students' attitude toward cross country running is more positive. Competitive sport is not connected with the quality of attitude toward cross-country running. The results obtained by the study give grounds for assuming that, given that attitudes are an important component of the motivational aspect of personality, it can be expected that the students' positive attitude toward cross country running would contribute to cross country running application in

  17. Alcohol affordability and alcohol demand: cross-country trends and panel data estimates, 1975 to 2008.

    Science.gov (United States)

    Nelson, Jon P

    2014-04-01

    Relatively little is known about cross-country differences in alcohol affordability or factors that determine differences in affordability over time. This information is potentially important for alcohol policy, especially policies that focus on higher taxes or prices to reduce total alcohol consumption. This study estimates cross-country alcohol consumption relationships using economic models incorporating income and prices and alternative models based on alcohol affordability. The data and analysis are restricted to higher income countries. Data for alcohol consumption per capita (ages 15+) are analyzed for 2 samples: first, 17 countries in the Organisation for Economic Co-operation and Development for the period 1975 to 2000; second, 22 countries in the European Union for the period from 2000 to 2008. Panel data models are utilized, with country and time fixed-effects to control for confounding influences. In economic demand models, covariates are real per capita income and real alcohol price indices. In affordability models, income is divided by prices to yield an index of alcohol affordability. Analysis of data trends reveals that much of the increase in affordability is due to rising real incomes, and not falling real prices. Economic models of demand perform slightly better statistically, but differences are not substantial as income and affordability are highly correlated. For both samples, exogenous rates of growth of alcohol consumption are negative. Price and income elasticities, on average, are within the range of prior estimates. Affordability elasticities are between 0.21 and 0.25. Although alcohol affordability is a valid concept statistically, its use in policy discussions tends to hide underlying causes of changes in affordability. A better approach is a comparison and analysis of trends and cross-country differences in real incomes and real alcohol prices together with the affordability index. Country-level analysis of income and price

  18. School Uniforms in Urban Public High Schools

    Science.gov (United States)

    Draa, Virginia Ann Bendel

    2005-01-01

    The purpose of this study was to determine whether or not the implementation of a mandatory uniform policy in urban public high schools improved school performance measures at the building level for rates of attendance, graduation, academic proficiency, and student conduct as measured by rates of suspensions and expulsions. Sixty-four secondary…

  19. Characteristics of injuries among young cross-country skiers.

    Directory of Open Access Journals (Sweden)

    Boguszewski Dariusz

    2011-08-01

    Full Text Available The aim of this study was to develop information about injuries in cadet and junior cross-country skiers. Material and methods. Fifty female (n=21 and male (n=29 competitors from Podhale were in research group. Skiers completed questionnaire. The questions concerned the location of injuries, types of injuries, methods of treatments and rehabilitation and recovery exercises. Results. The most frequent injury in the research group was bruises, cuts and sprains and muscle strain. Few people had suffered broken bones and muscle ruptures. The most of the skiers suffered knee injuries. As a treatment PRICEMM procedure has been introduced. The main method of recovery was rest from training. Conclusions. No correlation was found epidemiology of injuries and the treatment, gender, age, level of sport and the number of starts of the season. Sports training and recovery should be similar In each group (female and male competitors. Players starting considerably more likely to devote less time to treatment and improvement of injury.

  20. Perceptions of perioperative nursing competence: a cross-country comparison.

    Science.gov (United States)

    Gillespie, Brigid M; Harbeck, Emma B; Falk-Brynhildsen, Karin; Nilsson, Ulrica; Jaensson, Maria

    2018-01-01

    Throughout many countries, professional bodies rely on yearly self-assessment of competence for ongoing registration; therefore, nursing competence is pivotal to safe clinical practice. Our aim was to describe and compare perioperative nurses' perceptions of competence in four countries, while examining the effect of specialist education and years of experience in the operating room. We conducted a secondary analysis of cross-sectional surveys from four countries including; Australia, Canada, Scotland, and Sweden. The 40-item Perceived Perioperative Competence Scale-Revised (PPCS-R), was used with a total sample of 768 respondents. We used a factorial design to examine the influence of country, years of experience in the operating room and specialist education on nurses' reported perceived perioperative competence. Regardless of country origin, nurses with specialist qualifications reported higher perceived perioperative competence when compared to nurses without specialist education. However, cross-country differences were dependent on nurses' number of years of experience in the operating room. Nurses from Sweden with 6-10 years of experience in the operating room reported lower perceived perioperative competence when compared to Australian nurses. In comparing nurses with > 10 years of experience, Swedish nurses reported significantly lower perceived perioperative competence when compared to nurses from Australia, Canada and Scotland. Researchers need to consider educational level and years of experience in the perioperative context when examining constructs such as competence.

  1. Zipf rank approach and cross-country convergence of incomes

    Science.gov (United States)

    Shao, Jia; Ivanov, Plamen Ch.; Urošević, Branko; Stanley, H. Eugene; Podobnik, Boris

    2011-05-01

    We employ a concept popular in physics —the Zipf rank approach— in order to estimate the number of years that EU members would need in order to achieve "convergence" of their per capita incomes. Assuming that trends in the past twenty years continue to hold in the future, we find that after t≈30 years both developing and developed EU countries indexed by i will have comparable values of their per capita gross domestic product {\\cal G}_{i,t} . Besides the traditional Zipf rank approach we also propose a weighted Zipf rank method. In contrast to the EU block, on the world level the Zipf rank approach shows that, between 1960 and 2009, cross-country income differences increased over time. For a brief period during the 2007-2008 global economic crisis, at world level the {\\cal G}_{i,t} of richer countries declined more rapidly than the {\\cal G}_{i,t} of poorer countries, in contrast to EU where the {\\cal G}_{i,t} of developing EU countries declined faster than the {\\cal G}_{i,t} of developed EU countries, indicating that the recession interrupted the convergence between EU members. We propose a simple model of GDP evolution that accounts for the scaling we observe in the data.

  2. Renewable electricity consumption in the EU-27: Are cross-country differences diminishing?

    Energy Technology Data Exchange (ETDEWEB)

    Maza, Adolfo; Hierro, Maria; Villaverde, Jose [University of Cantabria, Department of Economics, Avda. de los Castros s/n, 39005 Santander (Spain)

    2010-09-15

    The aim of this paper is to analyse cross-country differences for shares of renewable electricity in the EU-27 for the period 1996-2005. We carry out a standard convergence analysis and then examine the evolution of the entire distribution, namely the external shape, intra-distributional dynamics and ergodic distribution. Our main results are as follows. First, there has been a clear convergence pattern for renewable electricity shares across countries. Second, the shape of the distribution has varied significantly over time, with more countries positioned around the mean in 2005 than in 1996. Third, the analysis shows that intra-distributional mobility has been relatively high, especially in those countries with the highest share in the initial year of our sample. Fourth, in spite of this, large cross-country differences will likely persist for RES-E shares in the hypothetical long-term equilibrium, which implies that a major impulse to national RES-E support policies will be necessary in the coming years to shorten this gap. (author)

  3. Cross-country differences in basal and stress-induced cortisol secretion in older adults.

    Directory of Open Access Journals (Sweden)

    Juliana N Souza-Talarico

    Full Text Available Several studies have emphasized the association between socioeconomic status (SES and inadequate response of the biological stress system. However, other factors related to SES are rarely considered, such as cultural values, social norms, organization, language and communication skills, which raises the need to investigate cross-country differences in stress response. Although some studies have shown differences in cortisol levels between immigrants and natives, there is no cross-country evidence regarding cortisol levels in country-native elders. This is particularly important given the high prevalence of stress-related disorders across nations during aging. The current study examined basal diurnal and reactive cortisol levels in healthy older adults living in two different countries.Salivary cortisol of 260 older adults from Canada and Brazil were analyzed. Diurnal cortisol was measured in saliva samples collected at home throughout two working days at awakening, 30 min after waking, 1400 h, 1600 h and before bedtime. Cortisol reactivity was assessed in response to the Trier Social Stress Test (TSST in both populations.Our results showed that even under similar health status, psychological and cognitive characteristics, Brazilian elders exhibited higher basal and stress-induced cortisol secretion compared to the Canadian participants.These findings suggest that country context may modulate cortisol secretion and could impact the population health.

  4. Cross-country differences in basal and stress-induced cortisol secretion in older adults.

    Science.gov (United States)

    Souza-Talarico, Juliana N; Plusquellec, Pierrich; Lupien, Sonia J; Fiocco, Alexandra; Suchecki, Deborah

    2014-01-01

    Several studies have emphasized the association between socioeconomic status (SES) and inadequate response of the biological stress system. However, other factors related to SES are rarely considered, such as cultural values, social norms, organization, language and communication skills, which raises the need to investigate cross-country differences in stress response. Although some studies have shown differences in cortisol levels between immigrants and natives, there is no cross-country evidence regarding cortisol levels in country-native elders. This is particularly important given the high prevalence of stress-related disorders across nations during aging. The current study examined basal diurnal and reactive cortisol levels in healthy older adults living in two different countries. Salivary cortisol of 260 older adults from Canada and Brazil were analyzed. Diurnal cortisol was measured in saliva samples collected at home throughout two working days at awakening, 30 min after waking, 1400 h, 1600 h and before bedtime. Cortisol reactivity was assessed in response to the Trier Social Stress Test (TSST) in both populations. Our results showed that even under similar health status, psychological and cognitive characteristics, Brazilian elders exhibited higher basal and stress-induced cortisol secretion compared to the Canadian participants. These findings suggest that country context may modulate cortisol secretion and could impact the population health.

  5. 14 CFR 61.93 - Solo cross-country flight requirements.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Solo cross-country flight requirements. 61... Solo cross-country flight requirements. (a) General. (1) Except as provided in paragraph (b) of this section, a student pilot must meet the requirements of this section before— (i) Conducting a solo cross...

  6. Cross-country differences in stock market development : a cultural view

    NARCIS (Netherlands)

    Jong, Eelke de; Semenov, Radislav

    2002-01-01

    Although during the last decades the importance of stock markets has increased in all OECD countries, the cross-country differences appear to be remarkably stable. In this paper we relate the factors determining cross-country differences in stock market activity to deeply rooted norms and values in

  7. External validation of the use of vignettes in cross-country health studies

    DEFF Research Database (Denmark)

    Datta Gupta, Nabanita; Kristensen, Nicolai; Pozzoli, Dario

    2010-01-01

    Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignette...... and vignettes. Our results indicate that the assumption of RC is not innocuous and that our extended model relaxing this assumption improves the fit and significantly changes the cross-country rankings of health vis-a-vis the standard Chopit model.......Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignettes...

  8. External Validation of the Use of Vignettes in Cross-Country Health Studies

    DEFF Research Database (Denmark)

    Datta Gupta, Nabanita; Kristensen, Nicolai; Pozzoli, Dario

    Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignette...... and vignettes. Our results indicate that the assumption of RC is not innocuous and that our extended model relaxing this assumption improves the fit and significantly changes the cross-country rankings of health vis-à-vis the standard Chopit model.......Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignettes...

  9. External validation of the use of vignettes in cross-country health studies

    DEFF Research Database (Denmark)

    Gupta, Nabanita Datta; Kristensen, Nicolai; Pozzoli, Dario

    Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignette...... and vignettes. Our results indicate that the assumption of RC is not innocous and that our extended model relaxing this assumption improves the fit and significantly changes the cross-country rankings of health vis-\\'{a}-vis the standard Chopit model.......Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignettes...

  10. Green accounts & day high schools

    DEFF Research Database (Denmark)

    Jørgensen, Michael Søgaard

    1997-01-01

    The arcticle presents the concept of green accounts and describes how it can be used in the daily work and the teaching at day high schools.......The arcticle presents the concept of green accounts and describes how it can be used in the daily work and the teaching at day high schools....

  11. Rebellion in a High School.

    Science.gov (United States)

    Stinchcombe, Arthur L.

    The premise of this book is that high school rebellion is an "expression of alienation from socially present authorities." Such rebellion is a manifestation of "expressive alienation" and has the quality of hatred or sullenness. Rebellious high school students are likely to be non-utilitarian, negativistic, hedonistic, and to stress group…

  12. Factors that Influence the Performance of Elite Sprint Cross-Country Skiers.

    Science.gov (United States)

    Hébert-Losier, Kim; Zinner, Christoph; Platt, Simon; Stöggl, Thomas; Holmberg, Hans-Christer

    2017-02-01

    Sprint events in cross-country skiing are unique not only with respect to their length (0.8-1.8 km), but also in involving four high-intensity heats of ~3 min in duration, separated by a relatively short recovery period (15-60 min). Our aim was to systematically review the scientific literature to identify factors related to the performance of elite sprint cross-country skiers. Four electronic databases were searched using relevant medical subject headings and keywords, as were reference lists, relevant journals, and key authors in the field. Only original research articles addressing physiology, biomechanics, anthropometry, or neuromuscular characteristics and elite sprint cross-country skiers and performance outcomes were included. All articles meeting inclusion criteria were quality assessed. Data were extracted from each article using a standardized form and subsequently summarized. Thirty-one articles met the criteria for inclusion, were reviewed, and scored an average of 66 ± 7 % (range 56-78 %) upon quality assessment. All articles except for two were quasi-experimental, and only one had a fully-experimental research design. In total, articles comprised 567 subjects (74 % male), with only nine articles explicitly reporting their skiers' sprint International Skiing Federation points (weighted mean 116 ± 78). A similar number of articles addressed skating and classical techniques, with more than half of the investigations involving roller-skiing assessments under laboratory conditions. A range of physiological, biomechanical, anthropometric, and neuromuscular characteristics was reported to relate to sprint skiing performance. Both aerobic and anaerobic capacities are important qualities, with the anaerobic system suggested to contribute more to the performance during the first of repeated heats; and the aerobic system during subsequent heats. A capacity for high speed in all the following instances is important for the performance of sprint cross-country

  13. Foreign aid and poverty reduction in sub-Saharan Africa: A cross-country investigation

    Directory of Open Access Journals (Sweden)

    GT Ijaiya

    2004-04-01

    Full Text Available The continuous increase in the rate of poverty in Sub-Saharan Africa can be linked to the inadequate management and use of international financial assistance such as foreign aid. Using a cross-country data, this paper examines the relationship between foreign aid and poverty reduction in Sub-Saharan Africa (SSA. The result obtained indicates that foreign aid has no significant influence on poverty reduction in SSA, because of the countries’ weak economic management evidenced by high levels of corruption, bad governance, and political and economic instability. To improve the performance of foreign aid directed at poverty reduction, the paper suggests the implementation of measures directed at good governance, macroeconomic and political stability.Incentives in Nigeria’s food manufacturing industries and their impact on output and prices

  14. Changes in physical performance parameters during and after moderate altitude training in elite cross country skiers

    DEFF Research Database (Denmark)

    Jensen, Kurt; Höög, Martina; Willis, Sarah

    2013-01-01

    INTRODUCTION: The Olympic cross country skiing competitions in 2014 will be held in Sochi, Russia at an altitude of approximately 1500m. Although moderate, this altitude is known to reduce performance in highly trained endurance athletes. It is also known that individuals react differently during...... altitude exposure. The purpose of this study was to evaluate performance changes during and after three weeks of training in moderate altitude in elite skiers. METHOD: Four male and three female skiers were tested on a roller skiing treadmill using the classic technique at sea level (NORM1), after 3 and 20...... and the WVO2max decreased 8.9% and 9.1%, respectively (P0.05). In contrast, the average power output (322±87W) during the “all out” test increased 3.4±2.7% 10 days after the altitude training (P

  15. Cross-country skiing movement factorization to explore relationships between skiing economy and athletes' skills.

    Science.gov (United States)

    Pellegrini, B; Zoppirolli, C; Boccia, G; Bortolan, L; Schena, F

    2018-02-01

    We investigated the relationships between the biomechanics of the double poling (DP) technique in cross-country skiing, its economy, and athletes' skill. To this aim, skiers' motion has been factorized into components through principal component analysis (PCA). Eight high-level (HL) and eight regional level (RL) male cross-country skiers performed a 5-minute submaximal DP trial while roller skiing on a treadmill at 14 km h -1 and 2° incline. Whole-body kinematics was recorded with a motion capture system. PCA was applied to markers coordinates to extract principal movements (PM k ), which were ranked by their variance. Energy cost (EC) of locomotion was calculated from ergospirometric measurements. Results showed that 96.7%±0.6% of total skiing pattern variance can be described with the first three PM k. (Shoulder and trunk flexion-extension are described PM 1 and PM 2 and elbow flexion-extension are mainly represented in PM 2 and PM 3. The variance of further components, consisting of residual movements (eg, slow postural changes or high-frequency vibrations), was greater for the RL than the HL skiers (4.0%±0.5% vs 2.6%±0.3%; P<.001) and was positively correlated with EC (R 2 =.646; P<.001). PCA permitted to describe the biomechanics of the DP technique through a limited set of principal movements. Skiing skills and economy appeared to be related to a skier's ability to simplify movement complexity, suggesting that an efficient skier is better able to reduce superfluous movement components during DP. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  16. Biomechanical characteristics and speed adaptation during kick double poling on roller skis in elite cross-country skiers.

    Science.gov (United States)

    Göpfert, Caroline; Holmberg, Hans-Christer; Stöggl, Thomas; Müller, Erich; Lindinger, Stefan Josef

    2013-06-01

    Recent developments in cross-country ski racing should promote the use of kick double poling. This technique, however, has not been the focus in athletes' training and has barely been investigated. The aims of the present study were to develop a function-based phase definition and to analyse speed adaptation mechanisms for kick double poling in elite cross-country skiers. Joint kinematics and pole/plantar forces were recorded in 10 athletes while performing kick double poling at three submaximal roller skiing speeds. A speed increase was associated with increases in cycle length and rate, while absolute poling and leg push-off durations shortened. Despite maintained impulses of force, the peak and average pole/leg forces increased. During double poling and leg push-off, ranges of motion of elbow flexion and extension increased (p push-off showed high variability among elite skiers, thus illustrating important aspects for technique training.

  17. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    2001-05-01

    Literature Cited National Science Education Standards; National Academy Press: Washington, DC, 1996; http://www. nap.edu/readingroom/books/nses/. Principles and Standards for School Mathematics; National Council of Teachers of Mathematics: Washington, DC, 2000; http://standards.nctm.org/. Visit CLIC, an Online Resource for High School Teachers at http://jchemed.chem.wisc.edu/HS/

  18. Velocity distribution of women's 30-km cross-country skiing during Olympic Games from 2002-2014.

    Science.gov (United States)

    Erdmann, Wlodzimierz S; Dancewicz-Nosko, Dorota; Giovanis, Vasilios

    2017-12-01

    Within several investigated endurance sport disciplines the distribution of load of the best competitors has a manner of evenly or slightly rising velocity values. Unfortunately many other competitors have usually diminishing values or when they are very poor they have evenly values. The aim of this study was to investigate distribution of velocity within 30-km cross-country female skiers. Cross-country skiing runs were investigated of Olympic Games 2002-2014 (Salt Lake City, Turin, Vancouver, Sochi). At every race two 15 km or three 10 km loops of the same vertical profile were taken into account. The competitors were divided onto: A - winners, B - medallists, C - competitors who obtained places 4 to 10 at the finish line (medium runners), D - competitors who obtained places 11 to 30 at the finish line (poor runners). Velocity data presented on the web pages of several institutions were utilized. The competitors had their velocity distributed in a manner with usually diminishing values. While comparing velocity of sequential loops with the mean velocity the difference for the poor runners reached the value of almost 6 %, which was too high. There was significant (usually negative) correlation coefficient between values of velocity deviation for the first and second loops and the mean value of velocity for the entire distance for the better runners and mixed, i.e. positive and negative values for the poorer runners. It was postulated investigations of velocity distribution should be introduced in coaching in order to inform competitors about their running. This advise is especially important for the poorer runners. Up to now cross country skiers run for themselves. It should be discussed whether the tactics used by road and track runners, i.e. running with pace makers, can be introduced in cross country skiing. Also the use of a drone during training can be used in order to maintain proper pace.

  19. Authoritative School Climate and High School Dropout Rates

    Science.gov (United States)

    Jia, Yuane; Konold, Timothy R.; Cornell, Dewey

    2016-01-01

    This study tested the association between school-wide measures of an authoritative school climate and high school dropout rates in a statewide sample of 315 high schools. Regression models at the school level of analysis used teacher and student measures of disciplinary structure, student support, and academic expectations to predict overall high…

  20. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-09-01

    Secondary School Feature Articles * Authentic Research within the Grasp of High School Students, by Annis Hapkiewicz, p 1212 * JCE Classroom Activity #19: Blueprint Photography by the Cyanotype Process, by Glen D. Lawrence and Stuart Fishelson, p 1216A Author Recognition A new program has been instituted to recognize high school teachers who are authors or coauthors of manuscripts published in the Journal. In May, letters were sent to teachers who wrote articles published in JCE beginning with Volume 74 (1997). If you were an author, you should have received a letter from us in late May or early June stating that your high school principal has been sent a Certificate of High School Author Recognition to be presented to you at a suitable occasion. Because the letters were sent late in the school year, you may not see the certificate until fall, or you may not receive your letter until then if we had only your school address. If you have authored or coauthored an article published in JCE and did not receive a letter, please contact me using the information about the Secondary School Chemistry Editor appearing on the Information Page in this issue. Syllabus Swap In the August issue, this column contained an invitation to exchange high school syllabi. The day after my copy of the August issue arrived, I received an email from a teacher indicating an interest in participating in an exchange. If you are interested, check the August "Especially for High School Chemistry Teachers" column for a brief discussion of the informal exchange program, or contact me. Research Conducted by High School Students In his June 1999 editorial "Learning Is a Do-It-Yourself Activity", p 725, John Moore wrote about the need to engage students actively in the learning process. As I have mentioned in this column previously, research conducted by students is one means of accomplishing this goal. In this issue, p 1212, Annis Hapkiewicz explains how she has drawn her Okemos [Michigan] High School

  1. Physiological and anthropometric characteristics of top-level youth cross-country cyclists.

    Science.gov (United States)

    Fornasiero, Alessandro; Savoldelli, Aldo; Modena, Roberto; Boccia, Gennaro; Pellegrini, Barbara; Schena, Federico

    2018-04-01

    In the literature there is a lack of data about the development of top level athletes in cross-country mountain biking (XCO). The purpose of this study was to analyze anthropometric and physiological characteristics of some of the best XCO bikers aged between 13 and 16. The study involved 45 bikers (26 males and 19 females) belonging to a youth national team. The evaluations, consisting of anthropometric measures, incremental cycling tests (VO 2max , PPO, P@RCP), and 30 s Wingate Tests (PMax, PMean), were conducted over a lapse of 4 years. Our findings showed in bikers, already at young age, a specific athletic profile advantageous for XCO performance. At the age of 16, just before entering the junior category and competing at international level, male and female bikers showed physiological values normalized to the body mass comparable to those reported in literature for high level athletes (VO 2max >70 and >60 ml/kg/min, PPO >6.5 and >5.5 W/kg, respectively in males and females). The production of high power-to-weight ratios and high peaks of anaerobic power attests the presence of highly developed aerobic and anaerobic systems in young XCO cyclists reflecting the high physiological demand of this sport.

  2. Participation in Summer School and High School Graduation in the Sun Valley High School District

    Science.gov (United States)

    Trujillo, Gabriel

    2012-01-01

    This study examines the effectiveness of a summer school credit recovery program in the Sun Valley High School District. Using logistic regression I assess the relationship between race, gender, course failure, school of origin and summer school participation for a sample of students that failed one or more classes in their first year of high…

  3. Carpet Aids Learning in High Performance Schools

    Science.gov (United States)

    Hurd, Frank

    2009-01-01

    The Healthy and High Performance Schools Act of 2002 has set specific federal guidelines for school design, and developed a federal/state partnership program to assist local districts in their school planning. According to the Collaborative for High Performance Schools (CHPS), high-performance schools are, among other things, healthy, comfortable,…

  4. The Effect of Creatin and Carnitine Supplementation on 5 kmClassic and 10 km Free Styles Race Performance of Cross Country Skiers

    OpenAIRE

    Ebru ÇETİN

    2004-01-01

    This İnvestigation examined the effect of creatin and carnitine supplementation on 5 km classic and 10 km free styles race performance of competitive cross country skiers.Eighteen highly trained (12 male and 6 female) cross country skiers aged 13-16 years seperated into 3 equal groups. All groups participated in the 5 km classic and 10 km free races styles in Erciyes at 2200m altitude ski center before the carnitine and creatine loading. After the race subjects were seperated into carnitine, ...

  5. Nonlinearity and cross-country dependence of income inequality

    OpenAIRE

    Leena Kalliovirta; Tuomas Malinen

    2015-01-01

    We use top income data and the newly developed regime switching Gaussian mixture vector autoregressive model to explain the dynamics of income inequality in developed economies within the last 100 years. Our results indicate that the process of income inequality consists of two equilibriums identifiable by high inequality, high income fluctuations and low inequality, low income fluctuations. Our results also show that income inequality in the U.S. is the driver of income inequality in other d...

  6. Credentialing high school psychology teachers.

    Science.gov (United States)

    Weaver, Kenneth A

    2014-09-01

    The National Standards for High School Psychology Curricula (American Psychological Association, 2013b) require a teacher with considerable psychology content knowledge to teach high school psychology courses effectively. In this study, I examined the initial teaching credential requirements for high school psychology teachers in the 50 states plus the District of Columbia. Thirty-four states (the District of Columbia is included as a state) require the social studies credential to teach high school psychology. An analysis of the items on standardized tests used by states to validate the content knowledge required to teach social studies indicates little or no presence of psychology, a reflection of psychology's meager presence in the social studies teacher preparation curricula. Thus, new teachers with the social studies teaching credential are not prepared to teach high school psychology according to the National Standards. Approval of The College, Career, and Civic Life (C3) Framework for Social Studies State Standards: Guidance for Enhancing the Rigor of K-12 Civics, Economics, Geography, and History (National Council for the Social Studies, 2013) presents an opportunity to advocate for establishing a psychology credential in the 34 states. (c) 2014 APA, all rights reserved.

  7. The effects of skiing velocity on mechanical aspects of diagonal cross-country skiing.

    Science.gov (United States)

    Andersson, Erik; Pellegrini, Barbara; Sandbakk, Oyvind; Stüggl, Thomas; Holmberg, Hans-Christer

    2014-09-01

    Cycle and force characteristics were examined in 11 elite male cross-country skiers using the diagonal stride technique while skiing uphill (7.5°) on snow at moderate (3.5 ± 0.3 m/s), high (4.5 ± 0.4 m/s), and maximal (5.6 ± 0.6 m/s) velocities. Video analysis (50 Hz) was combined with plantar (leg) force (100 Hz), pole force (1,500 Hz), and photocell measurements. Both cycle rate and cycle length increased from moderate to high velocity, while cycle rate increased and cycle length decreased at maximal compared to high velocity. The kick time decreased 26% from moderate to maximal velocity, reaching 0.14 s at maximal. The relative kick and gliding times were only altered at maximal velocity, where these were longer and shorter, respectively. The rate of force development increased with higher velocity. At maximal velocity, sprint-specialists were 14% faster than distance-specialists due to greater cycle rate, peak leg force, and rate of leg force development. In conclusion, large peak leg forces were applied rapidly across all velocities and the shorter relative gliding and longer relative kick phases at maximal velocity allow maintenance of kick duration for force generation. These results emphasise the importance of rapid leg force generation in diagonal skiing.

  8. A reappraisal of success factors for Olympic cross-country skiing.

    Science.gov (United States)

    Sandbakk, Øyvind; Holmberg, Hans-Christer

    2014-01-01

    Cross-country (XC) skiing has been an Olympic event since the first Winter Games in Chamonix, France, in 1924. Due to more effective training and tremendous improvements in equipment and track preparation, the speed of Olympic XC-ski races has increased more than that of any other Olympic endurance sport. Moreover, pursuit, mass-start, and sprint races have been introduced. Indeed, 10 of the 12 current Olympic competitions in XC skiing involve mass starts, in which tactics play a major role and the outcome is often decided in the final sprint. Accordingly, reappraisal of the success factors for performance in this context is required. The very high aerobic capacity (VO2max) of many of today's world-class skiers is similar that of their predecessors. At the same time, the new events provide more opportunities to profit from anaerobic capacity, upper-body power, high-speed techniques, and "tactical flexibility." The wide range of speeds and slopes involved in XC skiing requires skiers to continuously alternate between and adapt different subtechniques during a race. This technical complexity places a premium on efficiency. The relative amounts of endurance training performed at different levels of intensity have remained essentially constant during the past 4 decades. However, in preparation for the Sochi Olympics in 2014, XC skiers are performing more endurance training on roller skis on competition-specific terrain, placing greater focus on upper-body power and more systematically performing strength training and skiing at high speeds than previously.

  9. Energy content in manufacturing exports: A cross-country analysis

    International Nuclear Information System (INIS)

    Amador, João

    2012-01-01

    This article compares the energy content in manufacturing exports in a set of 30 advanced and emerging economies and examines its evolution from 1995 to 2005, combining information from the OECD input–output matrices and international trade data in 17 manufacturing sectors. In addition, the article suggests a methodology to disentangle export structure and sectoral energy efficiency effects, presenting results according to technological categories. The article concludes that Brazil, India and, mostly, China, present a high energy content in manufacturing exports, which has increased from 1995 to 2005. Conversely, many advanced economies, notably in Europe and North America, which showed energy contents below the world average in 1995, reinforced their position as exporters with relatively lower energy usage. The contribution of export structure and energy efficiency effects to explain differences in the energy content of exports draws attention to the situation of China. This country increased its relative energy usage in the exports of all technological categories of goods. This effect was reinforced by the stronger export specialization in high-tech products and hindered by a comparatively lower specialization in medium-high-tech products. - Highlights: ► We compare the energy content in manufacturing exports in advanced and emerging economies. ► We suggest a methodology to disentangle export structure and sectoral energy efficiency effects. ► Large emerging economies present high energy content in manufacturing exports. ► China increased its relative energy usage in the exports of all technological categories of goods.

  10. Bullying among High School Students

    Science.gov (United States)

    Nursel TÜRKMEN, Delia; Halis DOKGÖZ, Mihai; Semra AKGÖZ, Suzana; Bülent EREN, Bogdan Nicolae; Pınar VURAL, Horatiu; Oğuz POLAT, Horatiu

    2013-01-01

    ABSTRACT Objective: The main aim of this research is to investigate the prevalence of bullying behaviour, its victims and the types of bullying and places of bullying among 14-17 year-old adolescents in a sample of school children in Bursa, Turkey. Methodology: A cross-sectional survey questionnaire was conducted among class 1 and class 2 high school students for identification bullying. Results: Majority (96.7%) of the students were involved in bullying behaviours as aggressors or victims. For a male student, the likelihood of being involved in violent behaviours was detected to be nearly 8.4 times higher when compared with a female student. Conclusion: a multidisciplinary approach involving affected children, their parents, school personnel, media, non-govermental organizations, and security units is required to achieve an effective approach for the prevention of violence targeting children in schools as victims and/or perpetrators. PMID:24371478

  11. National Innovation System And Culture A Cross-Country Analysis

    Directory of Open Access Journals (Sweden)

    Joseph Gogodze

    2015-08-01

    Full Text Available This study assesses the relationship between Hofstedes cultural dimensions and the constituents of a National Innovation System NIS. We consider an NIS as a special kind of intangible latent asset and identify its two constituents input and output capital. These are extracted through a modern NIS measurement model based on the Global Innovation Index. Using structural equation models we show that power distance and uncertainty avoidance and long-term orientation and indulgence vs. restraint act through the latent constructs PDUA and LTIV respectively. Moreover individualism IDV and NIS constituents are directly and negatively affected by PDUA. IDV and LTIV directly and positively affect the NIS constituents. Further the results show that masculinity vs. femininity significantly and negatively affects the NIS input constituent and significantly affects the NIS output constituent but its impact is negative for high-income countries and positive for non-high income countries.

  12. Analysis of a Light Cross Country Combat Vehicle - The Cobra

    Science.gov (United States)

    1951-06-01

    34-’"- _.-- ; ..-".’ ;" - -; - Regular fracks > Beguiar tracks, baled on the conventional :d©«= trend defined i>y the close spacing of track links...Annex .2 ). The complexity of conventional steering mechanisms is high. Plan- etary gears «, hydraulic controls., brakes, and other accessories...sntiite vehicle« i£n straight ^ruaning*. the joint is completely closed and is held In that position by the two hydraulic cylinders» ’To mate

  13. The Training Characteristics of the World's Most Successful Female Cross-Country Skier.

    Science.gov (United States)

    Solli, Guro S; Tønnessen, Espen; Sandbakk, Øyvind

    2017-01-01

    The main aim of this study was to investigate the training characteristics of the most successful female cross-country skier ever during the best period of her career. The participant won six gold medals at the Olympic Games, 18 gold medals at the World Championship, and 110 World Cup victories. Day-to-day training diary data, interviews, and physiological tests were analyzed. Training data was systemized by training form (endurance, strength, and speed), intensity [low- (LIT), moderate- (MIT), and high-intensity training (HIT)], and mode (running, cycling, and skiing/roller skiing), followed by a division into different periodization phases. Specific sessions utilized in the various periodization periods and the day-to-day periodization of training, in connection with altitude camps and tapering toward major championships, were also analyzed. Following a 12-year nonlinear increase in training load, the annual training volume during the five consecutive successful years stabilized at 937 ± 25 h, distributed across 543 ± 9 sessions. During these 5 years, total training time was distributed as 90.6% endurance-, 8.0% strength-, and 1.4% speed-training, with endurance-training time consisting of 92.3 ± 0.3% LIT, 2.9 ± 0.5% MIT, and 4.8 ± 0.5% HIT. Total LIT-time consisted of 21% warm-up, 14% sessions 90 min. While the total number of LIT sessions remained stable across phases (32 sessions), total LIT-time was reduced from GP (76 h/month) to SP (68 h/month) and CP (55 h/month). MIT-time decreased from GP (2.8 h/month) to SP (2.2 h/month) and CP (1 h/month). HIT-time increased from GP (2.8 h/month) to SP (3.2 h/month) and CP (4.7 h/month). Altitude training accounted for 18-25% of annual training volume and performed across relatively short training camps (≤16 days) with a clear reduction of HIT training, but increased total and LIT volume compared to sea-level training. Training before international championships included a 2-week increase in LIT and strength

  14. The Training Characteristics of the World's Most Successful Female Cross-Country Skier

    Directory of Open Access Journals (Sweden)

    Guro S. Solli

    2017-12-01

    Full Text Available The main aim of this study was to investigate the training characteristics of the most successful female cross-country skier ever during the best period of her career. The participant won six gold medals at the Olympic Games, 18 gold medals at the World Championship, and 110 World Cup victories. Day-to-day training diary data, interviews, and physiological tests were analyzed. Training data was systemized by training form (endurance, strength, and speed, intensity [low- (LIT, moderate- (MIT, and high-intensity training (HIT], and mode (running, cycling, and skiing/roller skiing, followed by a division into different periodization phases. Specific sessions utilized in the various periodization periods and the day-to-day periodization of training, in connection with altitude camps and tapering toward major championships, were also analyzed. Following a 12-year nonlinear increase in training load, the annual training volume during the five consecutive successful years stabilized at 937 ± 25 h, distributed across 543 ± 9 sessions. During these 5 years, total training time was distributed as 90.6% endurance-, 8.0% strength-, and 1.4% speed-training, with endurance-training time consisting of 92.3 ± 0.3% LIT, 2.9 ± 0.5% MIT, and 4.8 ± 0.5% HIT. Total LIT-time consisted of 21% warm-up, 14% sessions <90 min, and 65% long-duration sessions >90 min. While the total number of LIT sessions remained stable across phases (32 sessions, total LIT-time was reduced from GP (76 h/month to SP (68 h/month and CP (55 h/month. MIT-time decreased from GP (2.8 h/month to SP (2.2 h/month and CP (1 h/month. HIT-time increased from GP (2.8 h/month to SP (3.2 h/month and CP (4.7 h/month. Altitude training accounted for 18–25% of annual training volume and performed across relatively short training camps (≤16 days with a clear reduction of HIT training, but increased total and LIT volume compared to sea-level training. Training before international championships

  15. Catholic High Schools and Rural Academic Achievement.

    Science.gov (United States)

    Sander, William

    1997-01-01

    A study of national longitudinal data examined effects of rural Catholic high schools on mathematics achievement, high school graduation rates, and the likelihood that high school graduates attend college. Findings indicate that rural Catholic high schools had a positive effect on mathematics test scores and no effect on graduation rates or rates…

  16. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-12-01

    Chemistry and the Environment This issue contains more than 20 articles relating to the environment. Several articles of potential interest are indicated in the Table of Contents with the SSC mark (). Others are not so indicated because they depict use of expensive instrumentation or costly procedures, but if you have an interest in environmental chemistry you may wish to examine all the environmentally related articles. While many of the articles, both marked and unmarked, are targeted to college-level environmental chemistry curricula or to introductory courses for non-major, the methods described in several could be readily adapted to high school chemistry courses. One article likely to be of interest to teachers is found in News from Online, pp 1608-1609. The author explains how to use the U.S. Environment Protection Agency's EnviroMapper Web site to view and query environmental information. She mentioned finding a hazardous waste handler located near her home, so I decided to check the area near my home. I quickly located a natural gas salt dome storage facility marked on the map and, with a few more mouse clicks, I found information that included status of compliance with regulations, amounts of each compound released to the air in tons per year, and how to contact the corporation owning the site. Email and Web site addresses were included for the convenience of anyone wishing to contact the corporation. Students could learn a great deal about where they live that is relevant to chemistry by using the EPA site. Additional Web sites dealing with environmental issues and chemistry are cited in the sidebar at the bottom of p 1609. Among the articles that could be adapted to an advanced high school chemistry class or possibly even to an introductory class is one titled Bridge of Mandolin County (pp 1671-1672). It describes a case-study strategy similar to the scenarios used in ChemStudy. Students analyze information from various sources, including laboratory

  17. Measuring Nonresponse Bias in a Cross-Country Enterprise Survey

    Directory of Open Access Journals (Sweden)

    Katarzyna Bańkowska

    2015-04-01

    Full Text Available Nonresponse is a common issue affecting the vast majority of surveys. Efforts to convince those unwilling to participate in a survey might not necessary result in a better picture of the target population and can lead to higher, not lower, nonresponse bias.We investigate the impact of non-response in the European Commission & European Central Bank Survey on the Access to Finance of Enterprises (SAFE, which collects evidence on the financing conditions faced by European SMEs compared with those of large firms. This survey, conducted by telephone bi-annually since 2009 by the ECB and the European Commission, provides a valuable means to search for this kind of bias, given the high heterogeneity of response propensities across countries.The study relies on so-called “Representativity Indicators” developed within the Representativity Indicators of Survey Quality (RISQ project, which measure the distance to a fully representative response. On this basis, we examine the quality of the SAFE Survey at different stages of the fieldwork as well as across different survey waves and countries. The RISQ methodology relies on rich sampling frame information, which is however partly limited in the case of the SAFE. We also assess the representativeness of the SAFE particular subsample created by linking the survey responses with the companies’ financial information from a business register; this sub-sampling is another potential source of bias which we also attempt to quantify. Finally, we suggest possible ways how to improve monitoring of the possible nonresponse bias in the future rounds of the survey.

  18. Chaos at High School

    Directory of Open Access Journals (Sweden)

    Tamás Meszéna

    2017-04-01

    Full Text Available We are faced with chaotic processes in many segments of our life: meteorology, environmental pollution, financial and economic processes, sociology, mechanics, electronics, biology, chemistry. The spreading of high-performance computers and the development of simulation methods made the examination of these processes easily available. Regular, periodic motions (pendulum, harmonic oscillatory motion, bouncing ball, as taught at secondary level, become chaotic even due minor changes. If it is true that the most considerable achievements of twentieth century physics were the theory of relativity, quantum mechanics and chaos theory, then it is presumably time to think about, examine and test how and to what extent chaos can be presented to the students. Here I would like to introduce a 12 lesson long facultative curriculum framework on chaos designed for students aged seventeen. The investigation of chaos phenomenon in this work is based on a freeware, “Dynamics Solver”. This software, with some assistance from the teacher, is suitable for classroom use at secondary level.

  19. Achilles tendon adaptation in cross-country runners across a competitive season.

    Science.gov (United States)

    Stanley, L E; Lucero, A; Mauntel, T C; Kennedy, M; Walker, N; Marshall, S W; Padua, D A; Berkoff, D J

    2018-01-01

    Ultrasound tissue characterization (UTC) is an imaging tool used to quantify tendon structural integrity. UTC has quantified Achilles tendon (AT) acute response to load in athletes; however, AT response to cumulative load over a season is unknown. The purpose of this study was to evaluate AT response across a four-month competitive season in collegiate cross-country (XC) runners. Participants (n=21; male=9, female=12; age=19.8±1.2 years; height=171.9±8.9 cm; weight=60.2±8.5 kg) were imaged using the UTC device with a 10-MHz linear-array transducer mounted in a tracking device. The device captures images at 0.2 mm intervals along the AT. UTC algorithms quantified the stability of pixel brightness over every 17 contiguous transverse images into four echo types (I-IV). A total of 168 scans (n=21, bilateral limbs) were performed monthly across the four-month season (Aug=M1, Sep=M2, Oct=M3, Nov=M4). Echo-type percentages (%) were calculated from each scan. Generalized estimating equations (GEE) linear regression models evaluated echo-type % change (β) over the season (M1=reference). Type I increased from M1 to M4 (β=9.10, Presilience to a competitive season of repetitive loading in highly trained runners. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  20. Do GCI indicators predict SME creation? A Western Balkans cross-country comparative analysis

    Directory of Open Access Journals (Sweden)

    Fëllënza Lushaku

    2016-03-01

    Full Text Available In early stages SMEs were seen as insignificant supplement to large business supply, whereas today they have a very important social and economic role, because of their contribution to job creation. These contributions are very valuable in times of crises and rising unemployment. In Kosovo and the Western Balkan countries, including countries such as Albania, Macedonia, Montenegro, Serbia and Bosnia and Herzegovina, the development of SMEs can contribute in facing many challenges, effects of inequality, high level of unemployment and demographic challenges. In addition, SME development can contribute to strengthening the competitiveness and productivity, while also promoting the growth of income per capita. Besides the positive perception the creation of small and medium enterprises has, it is also indispensable to consider their extinction rate, being the most affected category of businesses, especially in the initial stages. It is proved that the net SME creation and cross-country differences in the relationship between new businesses and extinct businesses, can serve as a recommendation for policy makers in order to create a favorable climate for small and medium enterprises. GCI indicators that measures global competitiveness are used to determine if the climate of competitiveness predicts the development of SMEs.

  1. Braille Goes to High School.

    Science.gov (United States)

    Amato, Sheila

    2003-01-01

    This brief report describes the development and implementation of a unique, full-year, credit-bearing, technology course in literary Braille transcription offered at a Long Island (New York) high school. It describes the program's goals, development, implementation, students, ongoing activities, outreach efforts, and student attitudes. Suggestions…

  2. INSPIRED High School Computing Academies

    Science.gov (United States)

    Doerschuk, Peggy; Liu, Jiangjiang; Mann, Judith

    2011-01-01

    If we are to attract more women and minorities to computing we must engage students at an early age. As part of its mission to increase participation of women and underrepresented minorities in computing, the Increasing Student Participation in Research Development Program (INSPIRED) conducts computing academies for high school students. The…

  3. Especially for High School Teachers

    Science.gov (United States)

    Emory Howell, J.

    1999-11-01

    many of our readers. The High School/College Interface Luncheon was part of the very rich day-long High School Program at the New Orleans ACS Meeting. Shown here (from left) are Glenn Crosby, the luncheon speaker; Lillie Tucker-Akin, the High School Day program chair; and Fred Johnson, Assistant Superintendent of Shelby County (TN) schools and Immediate Past President of NSTA. The recipient of the James Bryant Conant Award in High School Chemistry Teaching is Frank G. Cardulla, who taught for many years at Niles North High School, Skokie, Illinois. His extensive record of service to fellow teachers includes editing the JCE "View from My Classroom" feature for several years and writing several articles, as well as his recent appointment to the JCE Board of Publication. The recipient of the George C. Pimentel Award in Chemical Education is Jerry A. Bell of the American Chemical Society in Washington, DC. An author of numerous articles appearing in JCE and a member of the JCE Board of Publication for several years, he currently serves as Board Chair. The 16th Biennial Conference on Chemical Education Readers who attended the 15th BCCE in Waterloo, Ontario, know that much of the programming at these conferences is of interest to high school teachers. Many work shops, papers, and demonstrations are presented by high school teachers. There are many other outstanding papers and posters, plenary speakers, and exciting demonstrations. The 16th BCCE will be held at the University of Michigan in Ann Arbor, July 30-August 3, 2000. Among the high school teachers already scheduled to present workshops at the 16th BCCE are George Hague, Lynn Hershey, and Jack Randall, and there will be many more before the program is completed. The High School Chemistry Program Chair is Tim Graham, Roosevelt High School (MI). The Organizing Committee is seeking the assistance of local sections of the American Chemical Society within a 300-mile radius of Ann Arbor in providing support for high school

  4. New Evidence on Cross-Country Differences in Job Satisfaction Using Anchoring Vignettes

    DEFF Research Database (Denmark)

    Kristensen, Nicolai; Johansson, Edvard

    2006-01-01

    This paper presents results on cross-country comparison of job satisfaction across seven EU countries taking into account that people in different countries may perceive subjective questions differently. We apply a chopit model approach where the threshold parameters in an ordered probit model...... somewhat lower while workers from the Netherlands are found to have the highest level of job satisfaction. These results suggest that cultural di¤erences in the way people perceive subjective questions about satisfaction make simple cross-country comparison misleading....

  5. School-Within-A-School (Hawaii Nui High) Hilo High School Report 1969-70.

    Science.gov (United States)

    Hawaii Univ., Honolulu. Social Welfare Development and Research Center.

    The second year of operation of Hilo High School's "School-Within-A-School" [SWS] program is evaluated in this paper. Planning, training, and program implementation are described in the document. The following are the results of the program: There was an improvement in attendance among project students when compared to their record in…

  6. Middle School Concept Helps High-Poverty Schools Become High-Performing Schools

    Science.gov (United States)

    Picucci, Ali Callicoatte; Brownson, Amanda; Kahlert, Rahel; Sobel, Andrew

    2004-01-01

    The results of a study conducted by the Charles A. Dana Center at the University of Texas at Austin for the U.S. Department of Education during the 2001-02 school year showed that elements of the middle school concept can lead to improved student performance, even in high-poverty schools. This article describes common elements of the middle school…

  7. Authoritative school climate and high school dropout rates.

    Science.gov (United States)

    Jia, Yuane; Konold, Timothy R; Cornell, Dewey

    2016-06-01

    This study tested the association between school-wide measures of an authoritative school climate and high school dropout rates in a statewide sample of 315 high schools. Regression models at the school level of analysis used teacher and student measures of disciplinary structure, student support, and academic expectations to predict overall high school dropout rates. Analyses controlled for school demographics of school enrollment size, percentage of low-income students, percentage of minority students, and urbanicity. Consistent with authoritative school climate theory, moderation analyses found that when students perceive their teachers as supportive, high academic expectations are associated with lower dropout rates. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  8. A cross-country study of cigarette prices and affordability: evidence from the Global Adult Tobacco Survey.

    Science.gov (United States)

    Kostova, Deliana; Chaloupka, Frank J; Yurekli, Ayda; Ross, Hana; Cherukupalli, Rajeev; Andes, Linda; Asma, Samira

    2014-01-01

    To describe the characteristics of two primary determinants of cigarette consumption: cigarette affordability and the range of prices paid for cigarettes (and bidis, where applicable) in a set of 15 countries. From this cross-country comparison, identify places where opportunities may exist for reducing consumption through tax adjustments. Self-response data from 45,838 smokers from 15 countries, obtained from the Global Adult Tobacco Survey (GATS) 2008-2011. Using self-response data on individual cigarette expenditure and consumption, we construct a measure of the average cigarette price smokers pay for manufactured cigarettes (and bidis, where applicable) in 15 countries. We use these prices to evaluate cigarette affordability and the range of prices available in each country. These survey-derived measures of cigarette price and affordability are uniquely suited for cross-country comparison because they represent each country's distinctive mix of individual consumption characteristics such as brand choice, intensity of consumption, and purchasing behavior. In this sample of countries, cigarettes are most affordable in Russia, which has the most room for tobacco tax increase. Affordability is also relatively high in Brazil and China for cigarettes, and in India and Bangladesh for bidis. Although the affordability of cigarettes in India is relatively low, the range of cigarette prices paid is relatively high, providing additional evidence to support the call for simplifying the existing tax structure and reducing the width of price options. China has both high affordability and wide price ranges, suggesting multiple opportunities for reducing consumption through tax adjustments.

  9. Seasonal variations in body composition, maximal oxygen uptake, and gas exchange threshold in cross-country skiers.

    Science.gov (United States)

    Polat, Metin; Korkmaz Eryılmaz, Selcen; Aydoğan, Sami

    2018-01-01

    , did not significantly change, but their incremental running test time and running speed significantly increased while their body weight and BMI significantly decreased. These results indicate that the cross-country skiers developed a tolerance for high-intensity exercise and reached their highest level of athletic performance during the competitive season.

  10. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-08-01

    Care to Share? An Informal Syllabus Exchange A recent email message from Thomas Shiland, who teaches at Saratoga Springs Senior High School, noted that the process of revising the high school chemistry syllabus is underway in New York State. He expressed a strong interest in helping construct a chemistry syllabus that represents the best thinking about appropriate content. He wondered if it would be possible to develop a way in which different secondary chemistry syllabi could easily be exchanged. It is likely that readers from other states and countries are involved in a similar process and might also be interested in exchanging syllabi. Many states do not use the term syllabus to describe their guiding curricular document for chemistry but rather refer to it as a framework or as guidelines. In most cases, the document includes a list of key ideas or topics, performance indicators, and the major understandings associated with each key idea. Such documents would be appropriate for exchange among those of you involved in the revision process. If you are interested in arranging an exchange please contact me by email at j.e.howell@usm.edu or by mail at J. E. Howell, Box 5043, USM, Hattiesburg, MS39406-5043, USA. High School Day Information The High School Chemistry Program at the American Chemical Society National Meeting in New Orleans, Louisiana will be held Sunday, August 22, 1999, at the Doubletree Hotel, 300 Canal Street. If you wish to register only for the High School Day activities, which includes a pass to the ACS Exposition, a special registration form is available from Lillie Tucker-Akin, 2800 Reynard Dr., Tupelo, MS38801; sci4me@aol.com; fax: 662/566-7906. Advance registration is 25 and the cost of the High School Luncheon is 12. Register in advance by August 1, 1999, or from 7:45 to 8:30 a.m. at the High School Day table in the conference room area of the Doubletree. The workshop schedule is shown below. Secondary School Feature Articles * Exploring the

  11. A Comparison between Alpine Skiing, Cross-Country Skiing and Indoor Cycling on Cardiorespiratory and Metabolic Response

    Directory of Open Access Journals (Sweden)

    Thomas Stöggl, Christoph Schwarzl, Edith E. Müller, Masaru Nagasaki, Julia Stöggl, Peter Scheiber, Martin Schönfelder, Josef Niebauer

    2016-03-01

    Full Text Available Since physical inactivity especially prevails during winter months, we set out to identify outdoor alternatives to indoor cycling (IC by comparing the metabolic and cardiorespiratory responses during alpine skiing (AS, cross-country skiing (XCS and IC and analyse the effects of sex, age and fitness level in this comparison. Twenty one healthy subjects performed alpine skiing (AS, cross-country skiing (XCS, and IC. Oxygen uptake (VO2, total energy expenditure (EE, heart rate (HR, lactate, blood glucose and rate of perceived exertion (RPE were determined during three 4-min stages of low, moderate and high intensity. During XCS and IC VO2max and EE were higher than during AS. At least 2½ hours of AS are necessary to reach the same EE as during one hour of XCS or IC. HR, VO2, lactate, and RPEarms were highest during XCS, whereas RPEwhole-body was similar and RPElegs lower than during AS and IC, respectively. Weight adjusted VO2 and EE were higher in men than in women while fitness level had no effect. Male, fit and young participants were able to increase their EE and VO2 values more pronounced. Both AS and XCS can be individually tailored to serve as alternatives to IC and may thus help to overcome the winter activity deficit. XCS was found to be the most effective activity for generating a high EE and VO2 while AS was the most demanding activity for the legs.

  12. Causes of corruption: a survey of cross-country analyses and extended results

    NARCIS (Netherlands)

    Pellegrini, L.; Gerlagh, R.

    2008-01-01

    We survey and assess the empirical literature on the sources of corruption Thanks to the improved availability of data, we are able to produce an improved cross-country econometric model to test well-established and more recent hypotheses jointly. We do not find that the common law system, or a past

  13. SME Financing in Europe: Cross-Country Determinant of Bank Loan Maturity

    NARCIS (Netherlands)

    Koeter-Kant, J.; Hernandez-Canovas, G.

    2011-01-01

    This article examines the influence of cross-country differences on bank loan maturity for small and medium-sized enterprises (SMEs), using a sample of 3366 SMEs from 19 European countries. It analyses a country's legal and institutional environment while controlling for banking structure, economic

  14. Identifying Social Trust in Cross-Country Analysis: Do We Really Measure the Same?

    Science.gov (United States)

    Torpe, Lars; Lolle, Henrik

    2011-01-01

    Many see trust as an important social resource for the welfare of individuals as well as nations. It is therefore important to be able to identify trust and explain its sources. Cross-country survey analysis has been an important tool in this respect, and often one single variable is used to identify social trust understood as trust in strangers,…

  15. Kinematics of cross-country sit skiing during a Paralympic race

    NARCIS (Netherlands)

    Bernardi, Marco; Janssen, Thomas; Bortolan, Lorenzo; Pellegrini, Barbara; Fischer, Gabriela; Schena, Federico

    The study had three purposes: to verify a hypothesized speed decrease during the 15km cross-country sit skiing (CCSS) race; documenting this possible fatigue effect (speed decrease), to evaluate changes among the four laps in kinematics parameters (cycle speed, cycle duration, cycle length, duty

  16. SME Financing in Europe: Cross-Country Determinants of Debt Maturity

    NARCIS (Netherlands)

    Koeter-Kant, Johanna; Hernandez-Canovas, Gines

    2006-01-01

    We examine the influence of cross country differences on debt maturity for small and medium size enterprises (SMEs) using a sample of 3366 SMEs from 19 European countries. We analyze a country's legal environment, institutional environment, banking structure and economic situation while controlling

  17. Decomposing cross-country differences in Quality Adjusted Life Expectancy: The impact of value sets

    NARCIS (Netherlands)

    R. Heijink (Richard); P.H.M. Van Baal (Pieter); M. Oppe (Mark); A.H.E. Koolman (Xander); G. Westert (Gert)

    2011-01-01

    textabstractBackground: The validity, reliability and cross-country comparability of summary measures of population health (SMPH) have been persistently debated. In this debate, the measurement and valuation of nonfatal health outcomes have been defined as key issues. Our goal was to quantify and

  18. Decomposing cross-country differences in quality adjusted life expectancy: the impact of value sets.

    NARCIS (Netherlands)

    Heijink, R.; Baal, P. van; Oppe, M.; Koolman, X.; Westert, G.P.

    2011-01-01

    ABSTRACT: BACKGROUND: The validity, reliability and cross-country comparability of summary measures of population health (SMPH) have been persistently debated. In this debate, the measurement and valuation of nonfatal health outcomes have been defined as key issues. Our goal was to quantify and

  19. Decomposing cross-country differences in quality adjusted life expectancy : The impact of value sets

    NARCIS (Netherlands)

    Heijink, R.; Van Baal, P.; Oppe, M.; Koolman, X.; Westert, G.

    2011-01-01

    Background: The validity, reliability and cross-country comparability of summary measures of population health (SMPH) have been persistently debated. In this debate, the measurement and valuation of nonfatal health outcomes have been defined as key issues. Our goal was to quantify and decompose

  20. Neuro-Linguistic Programming: Improving Rapport between Track/Cross Country Coaches and Significant Others

    Science.gov (United States)

    Helm, David Jay

    2017-01-01

    This study examines the background information and the components of N.L.P., being eye movements, use of predicates, and posturing, as they apply to improving rapport and empathy between track/cross country coaches and their significant others in the arena of competition to help alleviate the inherent stressors.

  1. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-07-01

    Secondary School Feature Articles * Super Science Connections, by Patricia B. McKean, p 916 * A pHorseshoe, by Roger Plumsky, p 935 National Conferences in Your Part of the Country For the past several months, considerable space in this column has been devoted to forthcoming national conferences and conventions and to highlights of conferences past. For some of us, location is fairly unimportant; but for most of us travel costs and time are both factors to consider when choosing a conference. The community of high school chemistry teachers is favored by the number of national conventions and conferences that are held each year in different locations. In 1999, for example, the spring National Meeting of the American Chemical Society was in Anaheim and the National Science Teachers Association National Convention was in Boston. This summer CHEMED '99 will be held in Fairfield, CT, August 1-5, and the fall National ACS Meeting will be in New Orleans. Teachers from the mid-South especially should consider attending the High School Program at New Orleans, described below by Lillie Tucker Akin, Chairperson of the Division's High School Program Committee. The event will be held on Sunday to minimize conflicts with the beginning of the school year. JCE at CHEMED '99 Stop by the JCE booth at CHEMED '99 in the exhibits area to learn more about the wide array of print and nonprint resources you can use in your classroom and laboratory. Members of the editorial staff will be on hand to talk with you. You are invited to participate in a workshop, "Promoting Active Learning through JCE Activity Sheets and Software", on Monday, August 1, 8:30-10:30. The free hands-on workshop is number WT11 and we encourage you to include it among your choices in the blanks provided on the third page of the registration form. We will also conduct an interactive session to listen to ideas for making the Journal more useful to you. Check the final program for location and time or inquire at the JCE

  2. Sexting by High School Students.

    Science.gov (United States)

    Strassberg, Donald S; Cann, Deanna; Velarde, Valerie

    2017-08-01

    In the last 8 years, several studies have documented that many adolescents acknowledge having exchanged sexually explicit cell phone pictures of themselves, a behavior termed sexting. Differences across studies in how sexting was defined, recruitment strategies, and cohort have resulted in sometimes significant differences in as basic a metric as what percentage of adolescents have sent, received, or forwarded such sexts. The psychosocial and even legal risks associated with sexting by minors are significantly serious that accurate estimates of its prevalence, including over time, are important to ascertain. In the present study, students (N = 656) from a single private high school were surveyed regarding their participation in sexting. Students at this same school were similarly surveyed four years earlier. In this second survey, reported rates of sending (males 15.8%; females 13.6%) and receiving (males 40.5%; females 30.6%) sexually explicit cell phone pictures (revealing genitals or buttocks of either sex or female breasts) were generally similar to those reported at the same school 4 years earlier. Rates of forwarding sexts (males 12.2%; females 7.6%) were much lower than those previously acknowledged at this school. Correlates of sexting in this study were similar to those reported previously. Overall, our findings suggest that sexting by adolescents (with the exception of forwarding) remains a fairly common behavior, despite its risks.

  3. The Evolution of Champion Cross-Country-Skier Training: From Lumberjacks to Professional Athletes.

    Science.gov (United States)

    Sandbakk, Øyvind

    2017-02-01

    Competitive cross-country (XC) skiing has traditions extending back to the mid-19th century and was included as a men's event in the first Winter Games in 1924. Since then, tremendous improvements in equipment, track preparation, and knowledge about training have prompted greater increases in XC-skiing speeds than in any other Olympic sport. In response, this commentary focuses on how the training of successful XC skiers has evolved, with interviews and training data from surviving Norwegian world and Olympic XC champions as primary sources. Before 1970, most male champion XC skiers were lumberjacks who ran or skied long distances to and from felling areas while working long days in the woods. In addition, they trained as much as possible, with increased intensity during the autumn, while less work but more ski-specific training and competitions were done during the winter. Until the 1970s, few XC skiers were women, whom coaches believed tolerated less training than men did. Today's XC skiers are less physically active, but the influence of both science and the systematic approaches of former athletes and coaches have gradually taught XC skiers to adopt smarter, more goal-oriented training practices. Although the very high VO 2 max of world-class XC skiers has remained the same since the 1960s, new events in modern XC skiing have additionally required superior upper-body power, high-speed techniques, and tactical flexibility. These elements also emerge in the training of today's best skiers; women's physiological capacities and training routines especially seem to have improved dramatically.

  4. Indoor Air Quality in High Performance Schools

    Science.gov (United States)

    High performance schools are facilities that improve the learning environment while saving energy, resources, and money. The key is understanding the lifetime value of high performance schools and effectively managing priorities, time, and budget.

  5. Aerobic power and lean mass are indicators of competitive sprint performance among elite female cross-country skiers

    Directory of Open Access Journals (Sweden)

    Carlsson T

    2016-11-01

    Full Text Available Tomas Carlsson, Michail Tonkonogi, Magnus Carlsson School of Education, Health and Social Studies, Dalarna University, Falun, SwedenAbstract: The purpose of this study was to establish the optimal allometric models to predict International Ski Federation’s ski-ranking points for sprint competitions (FISsprint among elite female cross-country skiers based on maximal oxygen uptake (V̇O2max and lean mass (LM. Ten elite female cross-country skiers (age: 24.5±2.8 years [mean ± SD] completed a treadmill roller-skiing test to determine V̇O2max (ie, aerobic power using the diagonal stride technique, whereas LM (ie, a surrogate indicator of anaerobic capacity was determined by dual-emission X-ray anthropometry. The subjects’ FISsprint were used as competitive performance measures. Power function modeling was used to predict the skiers’ FISsprint based on V̇O2max, LM, and body mass. The subjects’ test and performance data were as follows: V̇O2max, 4.0±0.3 L min-1; LM, 48.9±4.4 kg; body mass, 64.0±5.2 kg; and FISsprint, 116.4±59.6 points. The following power function models were established for the prediction of FISsprint: 3.91×105 ∙ VO -6.00 2max and 6.95×1010 ∙ LM-5.25; these models explained 66% (P=0.0043 and 52% (P=0.019, respectively, of the variance in the FISsprint. Body mass failed to contribute to both models; hence, the models are based on V̇O2max and LM expressed absolutely. The results demonstrate that the physiological variables that reflect aerobic power and anaerobic capacity are important indicators of competitive sprint performance among elite female skiers. To accurately indicate performance capability among elite female skiers, the presented power function models should be used. Skiers whose V̇O2max differs by 1% will differ in their FISsprint by 5.8%, whereas the corresponding 1% difference in LM is related to an FISsprint difference of 5.1%, where both differences are in favor of the skier with

  6. Teaching Ethics to High School Students

    Science.gov (United States)

    Pass, Susan; Willingham, Wendy

    2009-01-01

    Working with two teachers and thirty-four high school seniors, the authors developed procedures and assessments to teach ethics in an American high school civics class. This approach requires high school students to discover an agreement or convergence between Kantian ethics and virtue ethics. The authors also created an instrument to measure…

  7. How High School Students Select a College.

    Science.gov (United States)

    Gilmour, Joseph E., Jr.; And Others

    The college selection process used by high school students was studied and a paradigm that describes the process was developed, based on marketing theory concerning consumer behavior. Primarily college freshmen and high school seniors were interviewed, and a few high school juniors and upper-level college students were surveyed to determine…

  8. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    2000-02-01

    Secondary School Feature Articles JCE Classroom Activity: #24. The Write Stuff: Using Paper Chromatography to Separate an Ink Mixture, p 176A Teaching Chemistry in the Midwinter Every year, forecasters around the world provide us with long-range predictions of what the seasons will afford us in the coming year. And each year, the weather provides a few surprises that the forecasters did not predict - such as a record amount of snow or record heat indexes, depending on where you live. Although the weatherman didn't predict it, we still must pull out our snow shovels or sun block and take the necessary steps to adapt to the situation. As teachers, we make predictions of teaching and learning goals that we aspire to achieve during a given year, and like the weather, the year brings surprises that aren't in line with our predictions. With that in mind, I would like to offer JCE as the scholastic snow shovel or sun shield you need to jump-start your class and reach the goals you have set. So find a warm (or cool) place, get comfortable, and spend some time with the February issue of JCE. Articles of General Interest in This Issue For readers living where snow falls, Williams's article on page 148 offers some historical background on the use of calcium chloride as a deicer. A diver that depends for its buoyancy upon gas given off by a chemical reaction is described by Derr, Lewis, and Derr in the article beginning on page 171. In her article appearing on pages 249-250, Wang describes a laboratory exercise that makes the mastery of solution preparation skills fun. The students' skill is tested by using the solutions they make to carry out the Briggs-Rauscher oscillating reaction. For high school class applications I recommend use of 3% hydrogen peroxide, described as an option in the article. A well-organized approach to separating an ink mixture, with some possibly new twists, is laid out in the student- and teacher-friendly format of JCE Classroom Activity: #24, pages

  9. School connectedness and high school graduation among maltreated youth.

    Science.gov (United States)

    Lemkin, Allison; Kistin, Caroline J; Cabral, Howard J; Aschengrau, Ann; Bair-Merritt, Megan

    2018-01-01

    Maltreated youth have higher rates of school dropout than their non-maltreated peers. School connectedness is a modifiable predictor of school success. We hypothesized maltreated youth's school connectedness (supportive relationships with adults at school and participation in school clubs) would be positively associated with high school graduation. We included youth with at least one Child Protective Services (CPS) report by age twelve from Longitudinal Studies of Child Abuse and Neglect, a prospective cohort study. Participation in extracurricular activities and adult relationships reported at age 16, high school graduation/General Education Development (GED) status reported at age 18, and demographics were provided by youth and caregivers. Maltreatment data were coded from CPS records. The outcome was graduation/receipt of GED. Multivariable logistic regressions examined the association between school connectedness and graduation/receipt of GED, controlling for confounders. In our sample of 318 maltreated youth, 73.3% graduated. School club was the only activity with a statistically significant association with graduation in bivariate analysis. Having supportive relationships with an adult at school was not significantly associated with graduation, though only 10.7% of youth reported this relationship. Maltreated youth who participated in school clubs had 2.54 times the odds of graduating, adjusted for study site, gender, poverty status, caregiver high school graduation status, and age at first CPS report (95% CI: [1.02, 6.33]). Few maltreated youth reported relationships with adults at school, and additional efforts may be needed to support these vulnerable youth. School club participation may represent an opportunity to modify maltreated youth's risk for school dropout. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. Teacher Accountability at High Performing Charter Schools

    Science.gov (United States)

    Aguirre, Moises G.

    2016-01-01

    This study will examine the teacher accountability and evaluation policies and practices at three high performing charter schools located in San Diego County, California. Charter schools are exempted from many laws, rules, and regulations that apply to traditional school systems. By examining the teacher accountability systems at high performing…

  11. Cross-country differences in productivity: the role of allocation and selection

    OpenAIRE

    Bartelsman, Eric J.; Haltiwanger, John; Scarpetta, Stefano

    2009-01-01

    This paper combines different strands of the productivity literature to investigate the effect of idiosyncratic (firm-level) policy distortions on aggregate outcomes. On the one hand, a growing body of empirical research has been relating cross-country differences in key economic outcomes, such as productivity or output per capita, to differences in policies and institutions that shape the business environment. On the other hand, a branch of empirical research has attempted to shed light on t...

  12. The evolution of champion cross-country-skier training: From lumberjacks to professional athletes

    OpenAIRE

    Sandbakk, Øyvind

    2017-01-01

    Competitive cross-country (XC) skiing has traditions extending back to the mid-19th century and was included as a men’s event in the first Winter Games in 1924. Since then, tremendous improvements in equipment, track preparation, and knowledge about training have prompted greater increases in XC-skiing speeds than in any other Olympic sport. In response, this commentary focuses on how the training of successful XC skiers has evolved, with interviews and training data from surviving Norwegian ...

  13. Armenia; The Road to Sustained Rapid Growth-Cross-Country Evidence

    OpenAIRE

    Garbis Iradian

    2003-01-01

    This study examines the growth determinants and the economic policy challenges that Armenia faces to sustain the rapid growth of the past two years. The paper also seeks to answer the following two questions: Why has Armenia performed relatively better than other transition economies? What are the roles of macroeconomic policies and the level of financial intermediation in explaining growth differences? The paper also draws upon past cross-country experiences by estimating panel regressions o...

  14. The impact of training process on the stress tests results of women cross country skiing representation.

    OpenAIRE

    Fusková, Dana

    2015-01-01

    Title: The impact of training process on the stress tests results of women cross country skiing representation. Aim: The aim of this thesis is the comparison of the results of stress tests carried out preparatory period before and after the preparation period and whether the results were influenced by the applied training process. Methods: In this thesis was used background research of professional publications, content analyzes of documents and comparison of the results of stress tests and c...

  15. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    2000-01-01

    Ideas and Resources in This Issue This issue contains a broad spectrum of topics of potential interest to high school teachers, including chemical safety, history, demonstrations, laboratory activities, electrochemistry, small group learning, and instructional software. In his report on articles published recently in The Science Teacher, Steve Long includes annotated references from that journal, and also from JCE, that provide timely and practical information (pp 21-22). The chemical significance of several anniversaries that will occur in the year 2000 are discussed in an article by Paul Schatz (pp 11-14). Scientists and inventors mentioned include Dumas, Wöhler, Goodyear, Joliot-Curie, Krebs, Pauli, Kjeldahl, and Haworth. Several discoveries are also discussed, including development of the voltaic pile, the use of chlorine to purify water, and the discovery of element 97, berkelium. This is the fourth consecutive year that Schatz has written an anniversaries article (1-3). Although most readers probably do not plan to be teaching in the years 2097-3000, these articles can make a nice addition to your file of readily available historical information for use now in meeting NSES Content Standard G (4). In contrast to the short historical summaries, an in-depth account of the work of Herman Boerhaave is provided by Trinity School (NY) teacher Damon Diemente. You cannot recall having heard of Boerhaave? Diemente explains in detail how Boerhaave's scientific observations, imperfect though they were, contributed significantly to the understanding of temperature and heat by scientists who followed him. Chemical demonstrations attract the interest of most of us, and Kathy Thorsen discusses several that appeared in Chem 13 News during the past year (pp 18-20). Included are demonstrations relating to LeChâtelier's principle, electronegativity, and the synthesis and reactions of carbon monoxide. Ideas for investigating the hydrophobic nature of Magic Sand are given in JCE

  16. Middle School and High School Students Who Stutter: A Qualitative Investigation of School Experiences

    Science.gov (United States)

    Cobb, Tiffany R.

    2017-01-01

    Purpose: The purpose of this study was to explore and further understand the ways in which middle school and high school students perceive their school experiences within the school environment. School has an important impact on the social development of children (Milsom, 2006). Learning is not done individually as classrooms are inherently social…

  17. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-02-01

    Secondary School Feature Articles * Building the Interest of High School Students for Science-A PACT Ambassador Program To Investigate Soap Manufacturing and Industrial Chemistry, by Matthew Lynch, Nicholas Geary, Karen Hagaman, Ann Munson, and Mark Sabo, p 191. * Promoting Chemistry at the Elementary Level, by Larry L. Louters and Richard D. Huisman, p 196. * Is It Real Gold? by Harold H. Harris, p 198. * The "Big Dog-Puppy Dog" Analogy for Resonance, by Todd P. Silverstein, p 206. * The Fizz Keeper, a Case Study in Chemical Education, Equilibrium, and Kinetics, by Reed A. Howald, p 208. Staying on Top: Curricular Projects, Relativistic Effects, and Standard-State Pressure You may wonder why some articles are identified with the Secondary School Chemistry logo (*) this month even though at first glance they appear to be of greater interest to college faculty.1 The three articles discussed below are representative of three broad categories: (i) the interrelatedness of science teaching and learning, K-16+; (ii) new understandings of chemical phenomena; and (iii) information about the use of SI units. For each article I have highlighted the major point(s) and the reasons it may be of interest to high school teachers. First, the article "The NSF 'Systemic' Projects- A New Tradition" (G. M. Barrow, p 158) is a commentary on changes in post-secondary introductory chemistry courses in which a distinction is drawn between information management and individual understanding. The author is of the opinion that most students expect the former and that the NSF-funded systemic projects "will thrive only if they are consistent with their information-management mission". Three individuals provided responses to the commentary from their perspective. Has a student asked you why mercury is a liquid, or why gold is the most electronegative metal? "Gold Chemistry: The Aurophilic Attraction" by J. Bardají and A. Laguna (p 201) and "Why Gold and Copper Are Colored but Silver Is Not" by

  18. Schools or Students? Identifying High School Effects on Student Suspensions

    Science.gov (United States)

    Baker-Smith, E. Christine

    2015-01-01

    Evidence is clear that discipline in high school is associated with negative outcomes across the life course. Not only are suspensions related to declining academic trajectories during high school in the form of attendance and academic achievement, students suspended once are also more likely to be suspended again and also substantially increase…

  19. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-10-01

    Writing Across the Curriculum The notion that student learning is enhanced through writing is widely accepted at all educational levels if the product is fairly assessed and the learner is provided with feedback. Finding the time to critically evaluate student papers is difficult at best and competes with time needed to prepare laboratory investigations. A few weeks ago a teacher who has extensive extracurricular responsibilities that include extensive interaction with parents and community members shared with me his frustration in not being able to grade written reports. This teacher is the head football coach at his school, but many readers experience the same difficulties due to a variety of duties. There are no easy or completely satisfying answers to this problem, but this issue contains an account of a successful approach (Writing in Chemistry: An Effective Learning Tool, pp 1399-1403). Although they are based on experience in college courses, several ideas described in the article could be applied in high school chemistry courses. In another article, the author of Precise Writing for a Precise Science (pp 1407-1408) identifies 20 examples of familiar, but incorrect, grammatical constructions and explains how to phrase each one correctly. Chemical Education Research: Improving Chemistry Learning The results from research on how students learn have greatly increased our understanding of cognition in recent years. However, the results are often published in the science education research literature and are not readily accessible to the classroom teacher. Additionally, the research reports are couched in specialized terminology. This issue contains a Viewpoints article (pp 1353-1361) that bridges the gap between research results and classroom application. It was written by two veteran chemical educators, Dudley Herron and Susan Nurrenbern. The shift from behaviorism to constructivism as the dominant theory of learning is described briefly to provide a context

  20. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-05-01

    assigned as a take-home activity. JCE Classroom Activity #15, "Liver and Onions: DNA Extraction from Animal and Plant Tissues" (p 400A, March 1999) also integrates chemical and biological concepts. The JCE Software videotape HIV-1 Protease: An Enzyme at Work is another useful resource. It can be used in any classroom where kinetics, catalysis, proteins, or enzymes are discussed. Information about JCE Software products can be found in recent issues of the Journal or by accessing JCE Online (http://jchemed.chem.wisc.edu). Because most high school students complete at least one year of biology before enrolling in chemistry, developing the connections between biology and chemistry can be especially productive. Connections between chemistry and biology often seem to be more real to students than do many of the phenomena we cite as applications. For example, students often are not able to make the connection between the excitation of electrons to produce electromagnetic radiation and anything that is personally relevant. The light given off by sodium or mercury vapor lights provides a common example of relating atomic emission to a useful process, but many students do not seem to find that particularly interesting. The need to make a connection between biology and chemistry becomes especially meaningful to students when the chemical change occurs within the human body. As an example, the interaction of emitted electromagnetic radiation with human cells to cause well-tanned skin seems more relevant to a greater number of students than the color of lights in a parking lot. This issue contains an article that describes a useful application of light to kill cancer cells through use of photosensitizers (p 592). The process of photodynamic therapy (PDT) provides another example that could help students make a connection between the emission of electromagnetic radiation and the challenge of killing cancer cells without harming healthy cells. Certainly this example is not a magic

  1. When and Why Dropouts Leave High School

    Science.gov (United States)

    Stearns, Elizabeth; Glennie, Elizabeth J.

    2006-01-01

    Teens may leave school because of academic failure, disciplinary problems, or employment opportunities. In this article, the authors test whether the reasons dropouts leave school differ by grade level and age. We compare dropout rates and reasons across grade levels and ages for all high school students, ethnic groups, and gender groups. Across…

  2. Switching Schools: Reconsidering the Relationship Between School Mobility and High School Dropout

    Science.gov (United States)

    Gasper, Joseph; DeLuca, Stefanie; Estacion, Angela

    2014-01-01

    Youth who switch schools are more likely to demonstrate a wide array of negative behavioral and educational outcomes, including dropping out of high school. However, whether switching schools actually puts youth at risk for dropout is uncertain, since youth who switch schools are similar to dropouts in their levels of prior school achievement and engagement, which suggests that switching schools may be part of the same long-term developmental process of disengagement that leads to dropping out. Using data from the National Longitudinal Survey of Youth 1997, this study uses propensity score matching to pair youth who switched high schools with similar youth who stayed in the same school. We find that while over half the association between switching schools and dropout is explained by observed characteristics prior to 9th grade, switching schools is still associated with dropout. Moreover, the relationship between switching schools and dropout varies depending on a youth's propensity for switching schools. PMID:25554706

  3. Body Composition and Dietary Intake of Elite Cross-country Skiers Members of the Greek National Team.

    Science.gov (United States)

    Papadopoulou, Sousana K; Gouvianaki, Anna; Grammatikopoulou, Maria G; Maraki, Zoi; Pagkalos, Ioannis G; Malliaropoulos, Nikolaos; Hassapidou, Maria N; Maffulli, Nicola

    2012-12-01

    To assess the anthropometric characteristics and dietary intake of the Greek national cross-country skiing team. Thirty-three athletes (10 females aged 20 ± 5 years; 23 males aged 20 ± 6 years old) participated in the study. All athletes were members of the Greek national ski team, and they had been selected to take part in the Winter Olympics, World Ski Championships, European Ski Championships or other international events, according to their performance. Body composition was estimated by bioelectrical impedance (BIA) and skinfold thickness. The athletes recorded their physical activity and dietary intake for 3 training days, and on a competition day. The female skiers had 14.2±1.9% body fat, the men 11.0±1.5% body fat. Female athletes consumed a diet of 1988±319 Kcal during training days and 2011±330 Kcal during competition days. Male athletes consumed 2255±790 Kcal and 2125±639 Kcal respectively. These values are below those recommended for highly active people. During the training period, carbohydrate, fat and protein contributed to 44.5±7.1%, 39.2±5.3% and 16.1±3.7% of the total energy intake (EI) respectively for the males, and to 52.8±5.6%, 33.0±3.7% and 14.3±2.5% of the EI of the women. Between training and competition days, men demonstrated an increased carbohydrate and reduced fat consumption when competing (PGreek national cross-country ski team could put the athletes at risk of nutritional deficiencies, and possibly compromise their athletic performance.

  4. Demographic Factors Affecting Internet Using Purposes of High School Students

    Science.gov (United States)

    Kilic, Abdullah Faruk; Güzeller, Cem Oktay

    2017-01-01

    This study aimed at determining the impact of demographic factors on the Internet usage purposes of high school students. The population of the study consisted of students between 9th and 12th grades from the Anatolian high schools, science high schools, social sciences high schools, sports high schools and fine arts high schools in Turkey. The…

  5. School-Related Factors Affecting High School Seniors' Methamphetamine Use

    Science.gov (United States)

    Stanley, Jarrod M.; Lo, Celia C.

    2009-01-01

    Data from the 2005 Monitoring the Future survey were used to examine relationships between school-related factors and high school seniors' lifetime methamphetamine use. The study applied logistic regression techniques to evaluate effects of social bonding variables and social learning variables on likelihood of lifetime methamphetamine use. The…

  6. Cross-country differences in the association between diabetes and disability.

    Science.gov (United States)

    Assari, Shervin; Lankarani, Reza Moghani; Lankarani, Maryam Moghani

    2014-01-06

    This study tested possible cross-country differences in the associations between diabetes and activities of daily living (ADLs), and possible confounding / mediating effects of socio-economic status, obesity, and exercise. Data came from Research on Early Life and Aging Trends and Effects (RELATE). The study included a total number of 25,372 community sample of adults who were 40 years or older. We used data from community based surveys in seven countries including China, Mexico, Barbados, Brazil, Chile, Cuba, and Uruguay. Demographics (age and gender), socio-economic status (education and income), obesity, exercise, and ADL (bath, dress, toilet, transfer, heavy, shopping, meals) were measured. Self-reported data on physician diagnosis of diabetes was the independent variable. We tested if diabetes is associated with ADL, before and after adjusting for socio-economics, obesity, and exercise in each country. Based on Model I (age and gender adjusted model), diabetes was associated with limitation in at least one ADL in Mexico, Barbados, Brazil, Chile, Cuba, and Uruguay, but not China. Based on Model II that also controlled for education and income, education explained the association between diabetes and limitation in ADL in Mexico and Uruguay. Based on Model III that also controlled for exercise and obesity, in Cuba and Brazil, exercise explained the link between diabetes and limitation in performing ADLs. Thus, the link between diabetes and ADL was independent of our covariates only in Chile and Barbados. There are cross-country differences in the link between diabetes and limitation in ADL. There are also cross-country differences in how socio-economic status, obesity, and exercise explain the above association.

  7. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    1999-04-01

    Secondary School Feature Articles * Amino Acid Wordsearch, by Terry L. Helser, p 495. Games, Puzzles, and Humor In honor of April Fools' Day this issue contains 22 pages devoted to games and puzzles that can be used to teach aspects of chemistry. Most are designed for high school and first-year college students. The lead article, p 481, contains an annotated bibliography of chemistry games, complete with a vendor list. Many of the annotated games must be purchased, but the other articles that follow in this issue describe some games and puzzles that require minimal preparation using a word processor and readily available materials. Actually, JCE has a long tradition of publishing games and puzzles for chemistry teachers and their students. Read the letter by Helser and the Editor's response, p 468, for some recent background. Not having counted articles over past years, I became curious and turned to the online index, accessed by way of http://jchemed.chem.wisc.edu/. Because I wanted to search the entire 75-year life of the Journal, I searched titles for the words "game", "puzzle", and "humor" and obtained a total of 85 hits from the three searches. After eliminating titles of articles that were not applicable, I found that at least 25 games, 48 puzzles, and 5 humor articles have appeared during the past 75 years. At an average of one per year, the JCE editors hardly can be accused of frivolity, but game, puzzle, and humor articles have been published. The term "game" did not appear in any titles during 1945-1970, "puzzle" did not appear from 1927 to 1953, and there was no mention of humor (in the titles) prior to 1974. What appears to be the earliest article (1929) about a game was authored by an undergraduate student at the University of Colorado (1). It was titled "Chemical Bank", and the game pieces were tokens cut from cork stoppers. Wire hooks were inserted in the side of the token to represent valence electrons available for bonding. Carbon contained 4 hooks

  8. Determinants of the Strength of Auditing and Reporting Standards: a Cross-Country Study

    Directory of Open Access Journals (Sweden)

    Pran Krishansing Boolaky

    2013-12-01

    Full Text Available Our study addresses the research gap regarding the absence of an empirical cross-country study on the determinants of the strength of auditing and reporting standards (SARS. Using data on 133 countries at various stages of development, we examine the role of environmental factors that influence a country’s strength of auditing and reporting standards. Our empirical results confirm that institutional infrastructure, financial market development and higher education and training jointly influence a country’s strength of auditing and reporting standards. We obtain qualitatively similar subsample results when we partition countries on the basis of economic development.

  9. The effect of mountain bike wheel size on Cross-Country performance

    OpenAIRE

    Hurst, Howard Thomas; Atkins, Stephen; Metcalfe, John; Sinclair, Jonathan Kenneth; Rylands, Lee

    2016-01-01

    The purpose of this study was to determine the influence of different wheel size diameters on indicators of cross-country mountain bike time trial performance. Nine competitive male mountain bikers (age 34.7 ± 10.7 years; stature 177.7 ± 5.6 cm; body mass 73.2 ± 8.6 kg) performed 1 lap of a 3.48 km mountain bike (MTB) course as fast as possible on 26″, 27.5″ and 29″ wheeled MTB. Time (s), mean power (W), cadence (revs · min−1) and velocity (km · h−1) were recorded for the whole lap and during...

  10. Glycogen resynthesis rate following cross-country skiing is closely correlated to skeletal muscle glycogen content

    DEFF Research Database (Denmark)

    Ørtenblad, Niels; Nielsen, Joachim; Saltin, Bengt

    on an optimal glycogen resynthesis rate before a subsequent exercise session. The purpose of present study was to evaluate the glycogen resynthesis rate in elite cross-country (cc) skiers, following exhaustive exercise, and to examine the role of muscular glycogen content on the resynthesis rate. METHOD: Ten...... as 4h and 22h after the race and analyzed for glycogen content. Figure 1. Correlation between muscle glycogen resynthesis rate and glycogen content after and in the rocery period after exercise. Line indicate best fit of all the data points (r2 = 0.41, p

  11. Are greenhouse gas emissions and cognitive skills related? Cross-country evidence.

    Science.gov (United States)

    Omanbayev, Bekhzod; Salahodjaev, Raufhon; Lynn, Richard

    2018-01-01

    Are greenhouse gas emissions (GHG) and cognitive skills (CS) related? We attempt to answer this question by exploring this relationship, using cross-country data for 150 countries, for the period 1997-2012. After controlling for the level of economic development, quality of political regimes, population size and a number of other controls, we document that CS robustly predict GHG. In particular, when CS at a national level increase by one standard deviation, the average annual rate of air pollution changes by nearly 1.7% (slightly less than one half of a standard deviation). This significance holds for a number of robustness checks. Copyright © 2017 Elsevier Inc. All rights reserved.

  12. Decomposing cross-country differences in quality adjusted life expectancy: the impact of value sets.

    Science.gov (United States)

    Heijink, Richard; van Baal, Pieter; Oppe, Mark; Koolman, Xander; Westert, Gert

    2011-06-23

    The validity, reliability and cross-country comparability of summary measures of population health (SMPH) have been persistently debated. In this debate, the measurement and valuation of nonfatal health outcomes have been defined as key issues. Our goal was to quantify and decompose international differences in health expectancy based on health-related quality of life (HRQoL). We focused on the impact of value set choice on cross-country variation. We calculated Quality Adjusted Life Expectancy (QALE) at age 20 for 15 countries in which EQ-5D population surveys had been conducted. We applied the Sullivan approach to combine the EQ-5D based HRQoL data with life tables from the Human Mortality Database. Mean HRQoL by country-gender-age was estimated using a parametric model. We used nonparametric bootstrap techniques to compute confidence intervals. QALE was then compared across the six country-specific time trade-off value sets that were available. Finally, three counterfactual estimates were generated in order to assess the contribution of mortality, health states and health-state values to cross-country differences in QALE. QALE at age 20 ranged from 33 years in Armenia to almost 61 years in Japan, using the UK value set. The value sets of the other five countries generated different estimates, up to seven years higher. The relative impact of choosing a different value set differed across country-gender strata between 2% and 20%. In 50% of the country-gender strata the ranking changed by two or more positions across value sets. The decomposition demonstrated a varying impact of health states, health-state values, and mortality on QALE differences across countries. The choice of the value set in SMPH may seriously affect cross-country comparisons of health expectancy, even across populations of similar levels of wealth and education. In our opinion, it is essential to get more insight into the drivers of differences in health-state values across populations. This

  13. Decomposing cross-country differences in quality adjusted life expectancy: the impact of value sets

    Directory of Open Access Journals (Sweden)

    Oppe Mark

    2011-06-01

    Full Text Available Abstract Background The validity, reliability and cross-country comparability of summary measures of population health (SMPH have been persistently debated. In this debate, the measurement and valuation of nonfatal health outcomes have been defined as key issues. Our goal was to quantify and decompose international differences in health expectancy based on health-related quality of life (HRQoL. We focused on the impact of value set choice on cross-country variation. Methods We calculated Quality Adjusted Life Expectancy (QALE at age 20 for 15 countries in which EQ-5D population surveys had been conducted. We applied the Sullivan approach to combine the EQ-5D based HRQoL data with life tables from the Human Mortality Database. Mean HRQoL by country-gender-age was estimated using a parametric model. We used nonparametric bootstrap techniques to compute confidence intervals. QALE was then compared across the six country-specific time trade-off value sets that were available. Finally, three counterfactual estimates were generated in order to assess the contribution of mortality, health states and health-state values to cross-country differences in QALE. Results QALE at age 20 ranged from 33 years in Armenia to almost 61 years in Japan, using the UK value set. The value sets of the other five countries generated different estimates, up to seven years higher. The relative impact of choosing a different value set differed across country-gender strata between 2% and 20%. In 50% of the country-gender strata the ranking changed by two or more positions across value sets. The decomposition demonstrated a varying impact of health states, health-state values, and mortality on QALE differences across countries. Conclusions The choice of the value set in SMPH may seriously affect cross-country comparisons of health expectancy, even across populations of similar levels of wealth and education. In our opinion, it is essential to get more insight into the drivers

  14. Attitudes of High School Students towards Geometry

    Directory of Open Access Journals (Sweden)

    Esat Avcı

    2014-12-01

    Full Text Available In this research, attitudes of high school students towards geometry were investigated in terms of gender, grade, types of the field and school. Population of research includes students who were studying at high school in five distincs of Mersin in 2013-2014 academical year. Sample of research includes 935 students from twelve high schools. Attitude scale which was developed by Su-Özenir (2008 was used for data collection. For data analysis, mean, standart deviation, t test and ANOVA were used. A meaningful difference between students’ attitudes towards geometry and variance of gender and grade level wasn’t observed, on the other hand a meaningful difference according to field and school type is observed.Key Words:    Attitudes towards geometry, high school geometry lesson, attitude scale

  15. THE HIGH SCHOOL COUNSELOR BEFORE CONFLICTS AND THE SCHOOL VIOLENCE

    Directory of Open Access Journals (Sweden)

    Rubén Sánchez-Carranza

    2016-01-01

    Full Text Available This article aims to reflect on the figure and role of high school counselor in the task of addressing conflict situations in which students are immersed. The existence of a rising tide of violence in school conflicts and how important it is to know what countries in Europe , Asia and Latin America is done to promote a culture of peace is recognized. What happened it is exposed in a high school in Germany and how questions from the critical eye that are applicable to our Mexican reality are issued. Finally, it highlights the importance of skills that the counselor must possess or develop to prevent school conflicts escalate to levels of violence.Finally experience working with the School counselors S033 about this subject area is described.

  16. Performance of oil industry cross-country pipelines in Western Europe: statistical summary of reported spillages, 1979

    Energy Technology Data Exchange (ETDEWEB)

    de Waal, A.; Hayward, P.; Panisi, C.; Groenhof, J.

    This report presents statistical data relating to spillages from oil industry cross-country pipelines during the calendar year 1979, with comments and comparisons for the five year period 1975-1979. (Copyright (c) CONCAWE 1980.)

  17. Trust, Behavior, and High School Outcomes

    Science.gov (United States)

    Romero, Lisa S.

    2015-01-01

    Purpose: The purpose of this paper is to contribute to the literature on student trust and to examine the relationship between student trust, behavior, and academic outcomes in high school. It asks, first, does trust have a positive effect on high school outcomes? Second, does trust influence student behavior, exerting an indirect effect on…

  18. High School Redesign Gets Presidential Lift

    Science.gov (United States)

    Adams, Caralee J.

    2013-01-01

    President Barack Obama applauded high school redesign efforts in his State of the Union address and encouraged districts to look to successful models for inspiration. Last week, he followed up with a request in his fiscal 2014 budget proposal for a new, $300 million competitive-grant program. Recognition is widespread that high schools need to…

  19. High School Students' Views on Blended Learning

    Science.gov (United States)

    Yapici, Ibrahim Umit; Akbayin, Hasan

    2012-01-01

    In this study, it is aimed to determine the high school students' views on blended learning. The study was carried out in biology course for the lesson unit of "Classification of Living Things and Biodiversity" with 47 9[superscript th] grade students attending Nevzat Ayaz Anatolian High School in the second term of the academic year of…

  20. Dual Enrollment for High School Students

    Science.gov (United States)

    Edwards, Linsey; Hughes, Katherine

    2011-01-01

    Dual enrollment programs allow high school students to enroll in college courses and potentially earn college credit. The term concurrent enrollment is sometimes used interchangeably with dual enrollment, and sometimes to refer to a particular model of dual enrollment. In some programs, students earn high school and college credit simultaneously;…

  1. National Standards for High School Psychology Curricula

    Science.gov (United States)

    American Psychologist, 2013

    2013-01-01

    The "National Standards for High School Psychology Curricula" attempts to represent current knowledge in the field of psychology in developmentally appropriate ways. Psychology is a popular high school course, one that can introduce students to scientific ideas and engage students in the learning process. However, it is difficult for even the best…

  2. The Classification of Romanian High-Schools

    Science.gov (United States)

    Ivan, Ion; Milodin, Daniel; Naie, Lucian

    2006-01-01

    The article tries to tackle the issue of high-schools classification from one city, district or from Romania. The classification criteria are presented. The National Database of Education is also presented and the application of criteria is illustrated. An algorithm for high-school multi-rang classification is proposed in order to build classes of…

  3. Midcentury Modern High Schools: Rebooting the Architecture

    Science.gov (United States)

    Havens, Kevin

    2010-01-01

    A high school is more than a building; it's a repository of memories for many community members. High schools built at the turn of the century are not only cultural and civic landmarks, they are also often architectural treasures. When these facilities become outdated, a renovation that preserves the building's aesthetics and character is usually…

  4. Pedagogical Stances of High School ESL Teachers: "Huelgas" in High School ESL Classrooms

    Science.gov (United States)

    del Carmen Salazar, Maria

    2010-01-01

    This article presents a qualitative case study of the pedagogical stances of high school English as a Second Language (ESL) teachers, and the subsequent responses of resistance or conformity by their English Language Learners (ELLs). The participants include three high school ESL teachers and 60 high school ESL students of Mexican origin. Findings…

  5. The Relationship between High School Math Courses, High School GPA, and Retention of Honors Scholarships

    Science.gov (United States)

    Megert, Diann Ackerman

    2005-01-01

    This research examined the high school transcripts of honors scholarship recipients to identify a better criterion for awarding scholarships than high school grade point average (GPA) alone. Specifically, this study compared the honors scholarship retention rate when the scholarship was awarded based on completed advanced high school math classes…

  6. The effect of mountain bike wheel size on cross-country performance.

    Science.gov (United States)

    Hurst, Howard Thomas; Sinclair, Jonathan; Atkins, Stephen; Rylands, Lee; Metcalfe, John

    2017-07-01

    The purpose of this study was to determine the influence of different wheel size diameters on indicators of cross-country mountain bike time trial performance. Nine competitive male mountain bikers (age 34.7 ± 10.7 years; stature 177.7 ± 5.6 cm; body mass 73.2 ± 8.6 kg) performed 1 lap of a 3.48 km mountain bike (MTB) course as fast as possible on 26″, 27.5″ and 29″ wheeled MTB. Time (s), mean power (W), cadence (revs · min -1 ) and velocity (km · h -1 ) were recorded for the whole lap and during ascent and descent sections. One-way repeated measure ANOVA was used to determine significant differences. Results revealed no significant main effects for any variables by wheel size during all trials, with the exception of cadence during the descent (F (2, 16)  = 8.96; P = .002; P 2  = .53). Post hoc comparisons revealed differences lay between the 26″ and 29″ wheels (P = .02). The findings indicate that wheel size does not significantly influence performance during cross-country when ridden by trained mountain bikers, and that wheel choice is likely due to personal choice or sponsorship commitments.

  7. Gender differences in the physiological responses and kinematic behaviour of elite sprint cross-country skiers.

    Science.gov (United States)

    Sandbakk, Oyvind; Ettema, Gertjan; Leirdal, Stig; Holmberg, Hans-Christer

    2012-03-01

    Gender differences in performance by elite endurance athletes, including runners, track cyclists and speed skaters, have been shown to be approximately 12%. The present study was designed to examine gender differences in physiological responses and kinematics associated with sprint cross-country skiing. Eight male and eight female elite sprint cross-country skiers, matched for performance, carried out a submaximal test, a test of maximal aerobic capacity (VO(2max)) and a shorter test of maximal treadmill speed (V (max)) during treadmill roller skiing utilizing the G3 skating technique. The men attained 17% higher speeds during both the VO(2max) and the V (max) tests (P differences that were reduced to 9% upon normalization for fat-free body mass. Furthermore, the men exhibited 14 and 7% higher VO(2max) relative to total and fat-free body mass, respectively (P gender groups. At the same absolute speed, men employed 11% longer cycles at lower rates, and at peak speed, 21% longer cycle lengths (P gender differences in performance and VO(2max) than those reported for comparable endurance sports. These differences reflect primarily the higher VO(2max) and lower percentage of body fat in men, since no gender differences in the ability to convert metabolic rate into work rate and speed were observed. With regards to kinematics, the gender difference in performance was explained by cycle length, not by cycle rate.

  8. The elite cross-country skier provides unique insights into human exercise physiology.

    Science.gov (United States)

    Holmberg, H-C

    2015-12-01

    Successful cross-country skiing, one of the most demanding of endurance sports, involves considerable physiological challenges posed by the combined upper- and lower-body effort of varying intensity and duration, on hilly terrain, often at moderate altitude and in a cold environment. Over the years, this unique sport has helped physiologists gain novel insights into the limits of human performance and regulatory capacity. There is a long-standing tradition of researchers in this field working together with coaches and athletes to improve training routines, monitor progress, and refine skiing techniques. This review summarizes research on elite cross-country skiers, with special emphasis on the studies initiated by Professor Bengt Saltin. He often employed exercise as a means to learn more about the human body, successfully engaging elite endurance athletes to improve our understanding of the demands, characteristics, and specific effects associated with different types of exercise. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  9. Using the power balance model to simulate cross-country skiing on varying terrain.

    Science.gov (United States)

    Moxnes, John F; Sandbakk, Oyvind; Hausken, Kjell

    2014-01-01

    The current study adapts the power balance model to simulate cross-country skiing on varying terrain. We assumed that the skier's locomotive power at a self-chosen pace is a function of speed, which is impacted by friction, incline, air drag, and mass. An elite male skier's position along the track during ski skating was simulated and compared with his experimental data. As input values in the model, air drag and friction were estimated from the literature based on the skier's mass, snow conditions, and speed. We regard the fit as good, since the difference in racing time between simulations and measurements was 2 seconds of the 815 seconds racing time, with acceptable fit both in uphill and downhill terrain. Using this model, we estimated the influence of changes in various factors such as air drag, friction, and body mass on performance. In conclusion, the power balance model with locomotive power as a function of speed was found to be a valid tool for analyzing performance in cross-country skiing.

  10. Predisposing Risk Factors and Stress Fractures in Division I Cross Country Runners.

    Science.gov (United States)

    Giffin, Kaci L; Knight, Kathy B; Bass, Martha A; Valliant, Melinda W

    2017-11-11

    The purpose of this study was to explore factors associated with increased stress fractures in collegiate cross country runners. Participants in this study were 42 male and female cross country runners at a Division I university. Each athlete completed a questionnaire regarding smoking status, vitamin/mineral intake, previous stress fracture history, birth control usage, menstrual status, and demographic information. Nutritional assessment via a 3-day food record and measurements of whole body, lumbar spine, and hip bone mineral densities (BMD) were also conducted on each athlete. Results indicated that 40% of the female and 35% of the male runners reported a history of stress fracture, and that all of these did not meet the recommended daily energy intake or adequate intakes for calcium or Vitamin D required for their amount of training. Two-tailed t-test found statistically higher incidences of lumbar spine BMD in males and females whose daily calcium and Vitamin D intakes were below minimum requirements as well as for women whose caloric intake was below the required level. When data on the lumbar spine was evaluated, 31% of participants (31.8% of the male and 30% of the female runners) were identified as having osteopenia and 4.8% with osteoporosis. Results warrant a need for future longitudinal studies.

  11. Using the power balance model to simulate cross-country skiing on varying terrain

    Directory of Open Access Journals (Sweden)

    Moxnes JF

    2014-05-01

    Full Text Available John F Moxnes,1 Øyvind Sandbakk,2 Kjell Hausken31Department for Protection, Norwegian Defence Research Establishment, Kjeller, Norway; 2Center for Elite Sports Research, Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway; 3Faculty of Social Sciences, University of Stavanger, Stavanger, NorwayAbstract: The current study adapts the power balance model to simulate cross-country skiing on varying terrain. We assumed that the skier’s locomotive power at a self-chosen pace is a function of speed, which is impacted by friction, incline, air drag, and mass. An elite male skier’s position along the track during ski skating was simulated and compared with his experimental data. As input values in the model, air drag and friction were estimated from the literature based on the skier's mass, snow conditions, and speed. We regard the fit as good, since the difference in racing time between simulations and measurements was 2 seconds of the 815 seconds racing time, with acceptable fit both in uphill and downhill terrain. Using this model, we estimated the influence of changes in various factors such as air drag, friction, and body mass on performance. In conclusion, the power balance model with locomotive power as a function of speed was found to be a valid tool for analyzing performance in cross-country skiing.Keywords: air drag, efficiency, friction coefficient, speed, locomotive power

  12. Especially for High School Teachers

    Science.gov (United States)

    Howell, J. Emory

    2000-05-01

    for You? The end of the school year is approaching quickly. In previous years, several readers have submitted manuscripts soon after the end of the school year, while ideas were fresh in their mind and there was relief from the demands of daily classes. If you have an idea for an article, I encourage you to think about writing as soon as the school term ends. I can probably guess what you are saying, "I don't have anything that readers would be interested in." This is a common reaction, to which we frequently respond by reminding high school teachers that this is "your journal" and the only way to ensure that topics of interest to you are considered or published is by your active participation. In this presidential election year I am reminded of the familiar sentiment, "I voted in the election, so I have earned the right to complain about the politicians." I do not wish to encourage complaining, but there is a relevant correlation. By submitting manuscripts to the Journal, you are ensuring that you will continue to get your money's worth because it will include topics of interest to you. When considering a submission, many prospective authors are overwhelmed at the thought of preparing a complete manuscript. Don't let that stop you. If you have an idea, an outline, or a rough draft, any of the feature editors or I would be happy to discuss it with you. This one-on-one interaction during the development process will help you express your ideas more effectively. Many teachers across the country who are faced with similar situations and problems each day would benefit from an article discussing innovative teaching strategies or a new way to look at principles we teach every year. As you begin to formulate your ideas, I would like to emphasize five features whose editors are fellow teachers: JCE Classroom Activities. An invitation for contributions was issued in the April issue of this column (JCE, 2000, 77, 431). Chemical Principles Revisited, edited by Cary Kilner

  13. Concussion Knowledge and Reporting Behavior Differences Between High School Athletes at Urban and Suburban High Schools.

    Science.gov (United States)

    Wallace, Jessica; Covassin, Tracey; Nogle, Sally; Gould, Daniel; Kovan, Jeffrey

    2017-09-01

    We determined differences in knowledge of concussion and reporting behaviors of high school athletes attending urban and suburban high schools, and whether a relationship exists between underreporting and access to an athletic trainer in urban schools. High school athletes (N = 715) from 14 high schools completed a validated knowledge of concussion survey consisting of 83 questions. The independent variable was school type (urban/suburban). We examined the proportion of athletes who correctly identified signs and symptoms of concussion, knowledge of concussion and reasons why high school athletes would not disclose a potential concussive injury across school classification. Data were analyzed using descriptive, non-parametric, and inferential statistics. Athletes attending urban schools have less concussion knowledge than athletes attending suburban schools (p urban schools without an athletic trainer have less knowledge than urban athletes at schools with an athletic trainer (p urban schools and 10 reasons for not reporting. Concussion education efforts cannot be homogeneous in all communities. Education interventions must reflect the needs of each community. © 2017, American School Health Association.

  14. The Preparation of Schools for Serious School Violence: An Analysis of New Mexico Public High Schools

    Science.gov (United States)

    DiMatteo, Henry

    2012-01-01

    This study surveyed New Mexico high school principals on their current state of preparedness for serious school violence. The researcher surveyed 119 public high schools, receiving a 65% return rate from a 25-question survey. Specifically, this study analyzed the relationships of three predictor variables: prevention, response, and building of…

  15. Should School Boards Discontinue Support for High School Football?

    Science.gov (United States)

    Margolis, Lewis H; Canty, Greg; Halstead, Mark; Lantos, John D

    2017-01-01

    A pediatrician is asked by her local school board to help them decide whether to discontinue their high school football program. She reviews the available evidence on the risks of football and finds it hopelessly contradictory. Some scholars claim that football is clearly more dangerous than other sports. Others suggest that the risks of football are comparable to other sports, such as lacrosse, ice hockey, or soccer. She finds very little data on the long-term sequelae of concussions. She sees claims that good coaching and a school culture that prioritizes the health of athletes over winning can reduce morbidity from sports injuries. In this paper, 3 experts also review the evidence about sports risks and discuss what is known and not known about the science and the ethics of high school football. Copyright © 2017 by the American Academy of Pediatrics.

  16. Preventive osteopathic manipulative treatment and stress fracture incidence among collegiate cross-country athletes.

    Science.gov (United States)

    Brumm, Lynn F; Janiski, Carrie; Balawender, Jenifer L; Feinstein, Adam

    2013-12-01

    Stress fractures are common among athletes, particularly distance runners, with many theories regarding the etiologic process of stress fractures and various studies identifying risk factors or suggesting preventive techniques. To our knowledge, no previous studies have discussed the possible causative effects of somatic dysfunction or the preventive capabilities of osteopathic manipulative treatment (OMT). To apply a preventive OMT protocol for cross-country athletes to reduce the incidence of stress fractures. Cohort study. Examinations of cross-country athletes at an NCAA (National Collegiate Athletic Association) Division I university were performed by supervising physician-examiners and first- and second-year osteopathic medical students during several consecutive academic years. Athletes re-enrolled in the study each year they continued to be eligible. The intervention included osteopathic structural examination and OMT that focused on somatic dysfunction identified in the pelvis, sacrum, and lower extremities. More than 1800 participant examinations were performed on 124 male and female participants by 3 supervising physician-examiners and 141 osteopathic medical students over the course of 5 consecutive academic years (2004-2005 to 2008-2009). Data from these academic years were compared with data from the previous 8 academic years (1996-1997 to 2003-2004). An average of 20 new participants enrolled yearly. The number of annual stress fractures per team ranged from 0 to 6 for male participants and 1 to 6 for female participants. The cumulative annual incidence of stress fractures for male participants demonstrated a statistically significant decrease from 13.9% (20 of 144) before intervention to 1.0% (1 of 105) after intervention, resulting in a 98.7% relative reduction in stress-fracture diagnosis (P=.019). The cumulative annual incidence for female participants showed a minimal decrease from 12.9% (23 of 178) before intervention to 12.0% (17 of 142) after

  17. Analysis of Institutional Competitiveness of Junior High Schools through the Admission Test to High School Education

    Science.gov (United States)

    Armendáriz, Joyzukey; Tarango, Javier; Machin-Mastromatteo, Juan Daniel

    2018-01-01

    This descriptive and correlational research studies 15,658 students from 335 secondary schools in the state of Chihuahua, Mexico, through the results of the examination of admission to high school education (National High School Admission Test--EXANI I from the National Assessment Center for Education--CENEVAL) on logical-mathematical and verbal…

  18. High school science fair and research integrity

    Science.gov (United States)

    Dalley, Simon; Shepherd, Karen; Reisch, Joan

    2017-01-01

    Research misconduct has become an important matter of concern in the scientific community. The extent to which such behavior occurs early in science education has received little attention. In the current study, using the web-based data collection program REDCap, we obtained responses to an anonymous and voluntary survey about science fair from 65 high school students who recently competed in the Dallas Regional Science and Engineering Fair and from 237 STEM-track, post-high school students (undergraduates, 1st year medical students, and 1st year biomedical graduate students) doing research at UT Southwestern Medical Center. Of the post-high school students, 24% had competed in science fair during their high school education. Science fair experience was similar overall for the local cohort of Dallas regional students and the more diverse state/national cohort of post-high school students. Only one student out of 122 reported research misconduct, in his case making up the data. Unexpectedly, post-high school students who did not participate in science fair anticipated that carrying out science fair would be much more difficult than actually was the case, and 22% of the post-high school students anticipated that science fair participants would resort to research misconduct to overcome obstacles. No gender-based differences between students’ science fair experiences or expectations were evident. PMID:28328976

  19. Demographic Factors Affecting Internet Using Purposes of High School Students

    OpenAIRE

    Abdullah Faruk Kılıç; Cem Oktay Güzeller

    2017-01-01

    This study aimed at determining the impact of demographic factors on the Internet usage purposes of high school students. The population of the study consisted of students between 9th and 12th grades from the Anatolian high schools, science high schools, social sciences high schools, sports high schools and fine arts high schools in Turkey. The sample was chosen through the stratified and cluster sampling procedure. The students were chosen randomly depending on the regions of their school at...

  20. Teaching Bioethics in High Schools

    Science.gov (United States)

    Araújo, Joana; Gomes, Carlos Costa; Jácomo, António; Pereira, Sandra Martins

    2017-01-01

    Objective: The Bioethics Teaching in Secondary Education (Project BEST) aims to promote the teaching of bioethics in secondary schools. This paper describes the development and implementation of the programme in Portugal. Design: Programme development involved two main tasks: (1) using the learning tools previously developed by the US Northwest…

  1. A resposta de frequência cardíaca durante as competições de "mountain bike cross-country" Heart rate response during mountain bike cross-country races

    Directory of Open Access Journals (Sweden)

    Vitor Pereira Costa

    2010-09-01

    round of XCO World Cup. Two weeks later both groups were evaluated in XCO Brazilian National Championship. The results showed that HR averaged 91-92% of HRmax. The exercise intensity zones showed different percentage of time spent during the races (10.0-14.8% easy; 23.1-30.1% moderate; 55.1-66.9% hard. This study shows that cross-country events are conducted at very high intensity, especially at the start of the race.

  2. Split School of High Energy Physics 2015

    CERN Document Server

    2015-01-01

    Split School of High Energy Physics 2015 (SSHEP 2015) was held at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), University of Split, from September 14 to September 18, 2015. SSHEP 2015 aimed at master and PhD students who were interested in topics pertaining to High Energy Physics. SSHEP 2015 is the sixth edition of the High Energy Physics School. Previous five editions were held at the Department of Physics, University of Sarajevo, Bosnia and Herzegovina.

  3. Technology Leadership in Malaysia's High Performance School

    Science.gov (United States)

    Yieng, Wong Ai; Daud, Khadijah Binti

    2017-01-01

    Headmaster as leader of the school also plays a role as a technology leader. This applies to the high performance schools (HPS) headmaster as well. The HPS excel in all aspects of education. In this study, researcher is interested in examining the role of the headmaster as a technology leader through interviews with three headmasters of high…

  4. Successful Transition to High School. Research Brief

    Science.gov (United States)

    Education Partnerships, Inc., 2012

    2012-01-01

    What steps can be taken to assure that 8th graders make a successful transition to 9th grade? More students fail ninth grade than any other grade level. When middle school students took part in high school transition programs with a variety of different articulation activities, fewer students were retained in ninth grade. Ideally, these transition…

  5. Teacher Reflective Practice in Jesuit High Schools

    Science.gov (United States)

    Klug, Joseph H.

    2010-01-01

    Teachers who engage in reflective practice are more effective and may encourage higher student achievement. The purpose of this study is to explore and describe the methods that teachers use in order to engage in reflective practice. Further, it is essential to gain an understanding of how schools, including Jesuit high schools, promote reflective…

  6. Cultures of Learning in Effective High Schools

    Science.gov (United States)

    Tichnor-Wagner, Ariel; Harrison, Christopher; Cohen-Vogel, Lora

    2016-01-01

    Purpose: Research indicates that a culture of learning is a key factor in building high schools that foster academic achievement in all students. Yet less is known about which elements of a culture of learning differentiate schools with higher levels of academic performance. To fill this gap, this comparative case study examined the cultures of…

  7. High School Teachers' Identities: Constructing Civic Selves

    Science.gov (United States)

    Obenchain, Kathryn M.; Balkute, Asta; Vaughn, Erin; White, Shannon

    2016-01-01

    Research suggests that teachers play a role in the type of citizenship education implemented in schools. The purpose of this qualitative case study was to explore how two high school teachers understood and enacted their civic identities as a dimension of their teacher identities. Findings suggest that factors contributing to an individual's civic…

  8. Scientific Literacy of High School Students.

    Science.gov (United States)

    Lucas, Keith B.; Tulip, David F.

    This investigation was undertaken in order to establish the status of scientific literacy among three groups of secondary school students in four Brisbane, Australia high schools, and to reduce the apparent reticence of science teachers to evaluate students' achievement in the various dimensions of scientific literacy by demonstrating appropriate…

  9. Case Studies of Leading Edge Small Urban High Schools. Relevance Strategic Designs: 8. High Tech High School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  10. High School Students’ Social Media Addiction

    OpenAIRE

    Deniz, Levent; Gürültü, Ercan

    2018-01-01

    Theaim of this study is to investigate high school students’ social mediaaddiction. The study was conducted with 473 students who were educated in2014-2015 academic year at 6 different schools in İstanbul, Eyüp disctrict.‘Social Media Addiction Scale’ developed by Tutgun, Ünal and Deniz (2015) wasused to determine the students’ social media addiction. The results in general showedthat high school students have a medium level social media addiction. Besides,it was also concluded that high scho...

  11. National standards for high school psychology curricula.

    Science.gov (United States)

    2013-01-01

    The National Standards for High School Psychology Curricula attempts to represent current knowledge in the field of psychology in developmentally appropriate ways. Psychology is a popular high school course, one that can introduce students to scientific ideas and engage students in the learning process. However, it is difficult for even the best of teachers to present all of psychology in a single course for students who begin with virtually no formal knowledge of psychology. The standards presented here constitute the first of two reports in this issue of the American Psychologist (January 2013) representing recent American Psychological Association (APA) policies that support high-quality instruction in the teaching of high school psychology. These standards provide curricular benchmarks for student learning in the high school course.

  12. Energy efficiency in Norway (1997). Cross Country Comparison on Energy Efficiency Indicators - Phase 5

    Energy Technology Data Exchange (ETDEWEB)

    Alm, Leif Kristian

    2000-02-01

    This is the national report for Norway in phase 5 of the SAVE project 'Cross country comparison of energy efficiency indicators'. The report deals with energy use and energy efficiency in Norway the last 20 years, with a special emphasis on the period after 1990. A detailed sector analysis has been done, applying Laspeyres indices to attribute changes in energy use to either activity, structure or intensity (efficiency). Aggregating sectors, we have found a total efficiency improvement of maximum 7-8 TWH from 1990 to 1997. This corresponds to a saving of 0.5% per year. In the same period, final energy use per Gross Domestic Product (GDP) was reduced by approx 2.4% per year. Thereby most of the reduction in final energy intensity can not be attributed to increased energy efficiency. Almost all data are taken from official Norwegian statistics (Statistics Norway). (author)

  13. The Impact of Governance on the Research Performance of European Universities in Cross-Country Comparisons

    Directory of Open Access Journals (Sweden)

    Sedláček Jan

    2017-12-01

    Full Text Available The article concentrates on the impact of selected aspects of governance - the level of autonomy and the involvement of stakeholders in the internal governance of a university - on the research performance of universities measured by indicators of international university rankings in cross-country comparisons. The analyses are geographically situated in Europe. They follow two paths which are from the theoretical point of view based on the concepts of the principal-agent problem and stakeholder theory. Using linear regression, the author identifies statistically significant aspects of governance and compares them with results of previous studies. The findings serve as a basis for a discussion regarding how to create appropriate conditions for universities in order to improve their prospects for international success in research. The limitations of the results relating to the data, methodology and their application in the European context are discussed and general recommendations are formulated.

  14. Biomechanical analysis of double poling in elite cross-country skiers.

    Science.gov (United States)

    Holmberg, Hans-Christer; Lindinger, Stefan; Stöggl, Thomas; Eitzlmair, Erich; Müller, Erich

    2005-05-01

    To further the understanding of double poling (DP) through biomechanical analysis of upper and lower body movements during DP in cross-country (XC) skiing at racing speed. Eleven elite XC skiers performed DP at 85% of their maximal DP velocity (V85%) during roller skiing at 1 degrees inclination on a treadmill. Pole and plantar ground reaction forces, joint angles (elbow, hip, knee, and ankle), cycle characteristics, and electromyography (EMG) of upper and lower body muscles were analyzed. 1) Pole force pattern with initial impact force peak and the following active force peak (PPF) correlated to V85%, (r = 0.66, P biomechanical aspects. Future research should further investigate the relationship between biomechanical and physiological variables and elaborate training models to improve DP performance.

  15. Decoupling Economic Growth and Energy Use. An Empirical Cross-Country Analysis for 10 Manufacturing Sectors

    Energy Technology Data Exchange (ETDEWEB)

    Mulder, P. [International Institute for Applied Systems Analysis, Laxenburg (Austria); De Groot, H.L.F. [Faculty of Economics and Business Administration, Vrije Universiteit, Amsterdam (Netherlands)

    2004-07-01

    This paper provides an empirical analysis of decoupling economic growth and energy use and its various determinants by exploring trends in energy- and labour productivity across 10 manufacturing sectors and 14 OECD countries for the period 1970-1997. We explicitly aim to trace back aggregate developments in the manufacturing sector to developments at the level of individual subsectors. A cross-country decomposition analysis reveals that in some countries structural changes contributed considerably to aggregate manufacturing energy-productivity growth and, hence, to decoupling, while in other countries they partly offset energy-efficiency improvements. In contrast, structural changes only play a minor role in explaining aggregate manufacturing labour-productivity developments. Furthermore, we find labour-productivity growth to be higher on average than energy-productivity growth. Over time, this bias towards labour-productivity growth is increasing in the aggregate manufacturing sector, while it is decreasing in most manufacturing subsectors.

  16. Explaining Cross-Country Differences in Attitudes Towards Immigration in the EU-15

    DEFF Research Database (Denmark)

    Malchow-Møller, Nikolaj; Munch, Jakob Roland; Schroll, Sanne

    2009-01-01

    In this paper, we use data from the first two rounds of the European Social Survey to analyze the extent to which differences in average attitudes towards immigration across the EU-15 countries may be explained by differences in socioeconomic characteristics and individually perceived consequences...... of immigration, using an extension of a decomposition technique developed by Fairlie (2005). We find that despite the significant effects of socioeconomic characteristics on attitudes, differences in the distributions of these characteristics can only explain a modest share of the cross-country variation...... in average attitudes. A larger part can be explained by differences in perceived consequences of immigration, but the main part is still left unexplained. Apart from providing useful input for policy makers working in the area of immigration policy, this raises a number of questions for further research...

  17. Explaining Cross-Country Differences in Attitudes towards Immigration in the EU-15

    DEFF Research Database (Denmark)

    Malchow-Møller, Nikolaj; Munch, Jakob Roland; Schroll, Sanne

    2007-01-01

    In this paper, we use data from the first two rounds of the European Social Survey to analyze the extent to which differences in average attitudes towards immigration across the EU-15 countries may be explained by differences in socioeconomic characteristics and individually perceived consequences...... of immigration, using an extension of a decomposition technique developed by Fairlie (2005). We find that despite the significant effects of socioeconomic characteristics on attitudes, differences in the distributions of these characteristics can only explain a modest share of the cross-country variation...... in average attitudes. A larger part can be explained by differences in perceived consequences of immigration, but the main part is still left unexplained. Apart from providing useful input for policy makers working in the area of immigration policy, this raises a number of questions for further research...

  18. Explaining Cross-Country Differences in Attitudes Towards Immigration in the EU-15

    DEFF Research Database (Denmark)

    Malchow-Møller, Nikolaj; Munch, Jakob Roland; Skaksen, Jan Rose

    In this paper, we use data from the first two rounds of the European Social Survey to analyse the extent to which differences in average attitudes towards immigration across the EU-15 countries may be explained by differences in socioeconomic characteristics and individually perceived consequences...... of immigration, using an extension of a decomposition technique developed by Fairlie (2005). We find that despite the significant effects of socioeconomic characteristics on attitudes, differences in the distributions of these characteristics can only explain a modest share of the cross-country variation...... in average attitudes. A larger part can be explained by differences in perceived consequences of immigration, but the main part is still left unexplained. Apart from providing useful input for policy makers working in the area of immigration policy, this raises a number of questions for further research...

  19. Energy efficiency in Norway (1996). Cross Country Comparison on Energy Efficiency Indicators, Phase 4

    Energy Technology Data Exchange (ETDEWEB)

    Alm, Leif Kristian

    1998-12-01

    This is the national report for Norway in phase 4 of the SAVE project 'Cross country comparison of energy efficiency indicators'. The report deals with energy use and energy efficiency in Norway the last 20 years, with a special emphasis on the period after 1990. Final energy use per Gross Domestic Product (GDP) was reduced by approx 2.3% per year from 1990 to 1996. Doing detailed sector analysis we are applying Laspeyres indices to attribute changes in energy use to either activity, structure or intensity. Calculating an aggregate intensity index from the sector intensities gives an average intensity reduction of 0.4% per year. Thereby most of the reduction in final energy per unit GDP are due to structural changes, and not technical improvements. Almost all data are taken from official Norwegian statistics (Statistics Norway). (author)

  20. Research of Obstacle Recognition Technology in Cross-Country Environment for Unmanned Ground Vehicle

    Directory of Open Access Journals (Sweden)

    Zhao Yibing

    2014-01-01

    Full Text Available Being aimed at the obstacle recognition problem of unmanned ground vehicles in cross-country environment, this paper uses monocular vision sensor to realize the obstacle recognition of typical obstacles. Firstly, median filtering algorithm is applied during image preprocessing that can eliminate the noise. Secondly, image segmentation method based on the Fisher criterion function is used to segment the region of interest. Then, morphological method is used to process the segmented image, which is preparing for the subsequent analysis. The next step is to extract the color feature S, color feature a and edge feature “verticality” of image are extracted based on the HSI color space, the Lab color space, and two value images. Finally multifeature fusion algorithm based on Bayes classification theory is used for obstacle recognition. Test results show that the algorithm has good robustness and accuracy.

  1. Energy system contributions and determinants of performance in sprint cross-country skiing

    DEFF Research Database (Denmark)

    Andersson, E; Björklund, G; Holmberg, H-C

    2017-01-01

    To improve current understanding of energy contributions and determinants of sprint-skiing performance, 11 well-trained male cross-country skiers were tested in the laboratory for VO2max , submaximal gross efficiency (GE), maximal roller skiing velocity, and sprint time-trial (STT) performance...... during the STT was predicted from the submaximal relationships for GE against velocity and incline, allowing computation of metabolic rate and O2 deficit. The skiers completed the STT in 232 ± 10 s (distributed as 55 ± 3% DP and 45 ± 3% DS) with a mean power output of 324 ± 26 W. The anaerobic energy......-skiing has demonstrated an anaerobic energy contribution of 18%, with GE being the strongest predictor of performance....

  2. Using Bilateral Functional and Anthropometric Tests to Define Symmetry in Cross-Country Skiers

    Directory of Open Access Journals (Sweden)

    Björklund Glenn

    2017-12-01

    Full Text Available The aim of this study was to evaluate the symmetry of anthropometry and muscle function in cross-country skiers and their association to vertical jumping power. Twenty cross-country skiers were recruited (21.7 ± 3.8 yrs, 180.6 ± 7.6 cm, 73.2 ± 7.6 kg. Anthropometric data was obtained using an iDXA scan. VO2max was determined using the diagonal stride technique on a ski treadmill. Bilateral functional tests for the upper and lower body were the handgrip and standing heel-rise tests. Vertical jump height and power were assessed with a counter movement jump. Percent asymmetry was calculated using a symmetry index and four absolute symmetry index levels. At a group level the upper body was more asymmetrical with regard to lean muscle mass (p = 0.022, d = 0.17 and functional strength (p = 0.019, d = 0.51 than the lower body. At an individual level the expected frequencies for absolute symmetry level indexes showed the largest deviation from zero for the heel-rise test (χ2 = 16.97, p = 0.001, while the leg lean mass deviated the least (χ2 = 0.42, p = 0.517. No relationships were observed between absolute symmetry level indexes of the lower body and counter movement jump performance (p > 0.05. As a group the skiers display a more asymmetrical upper body than lower body regarding muscle mass and strength. Interestingly at the individual level, despite symmetrical lean leg muscle mass the heel-rise test showed the largest asymmetry. This finding indicates a mismatch in muscle function for the lower body.

  3. Using Bilateral Functional and Anthropometric Tests to Define Symmetry in Cross-Country Skiers.

    Science.gov (United States)

    Björklund, Glenn; Alricsson, Marie; Svantesson, Ulla

    2017-12-01

    The aim of this study was to evaluate the symmetry of anthropometry and muscle function in cross-country skiers and their association to vertical jumping power. Twenty cross-country skiers were recruited (21.7 ± 3.8 yrs, 180.6 ± 7.6 cm, 73.2 ± 7.6 kg). Anthropometric data was obtained using an iDXA scan. VO 2max was determined using the diagonal stride technique on a ski treadmill. Bilateral functional tests for the upper and lower body were the handgrip and standing heel-rise tests. Vertical jump height and power were assessed with a counter movement jump. Percent asymmetry was calculated using a symmetry index and four absolute symmetry index levels. At a group level the upper body was more asymmetrical with regard to lean muscle mass (p = 0.022, d = 0.17) and functional strength (p = 0.019, d = 0.51) than the lower body. At an individual level the expected frequencies for absolute symmetry level indexes showed the largest deviation from zero for the heel-rise test (χ2 = 16.97, p = 0.001), while the leg lean mass deviated the least (χ2 = 0.42, p = 0.517). No relationships were observed between absolute symmetry level indexes of the lower body and counter movement jump performance (p > 0.05). As a group the skiers display a more asymmetrical upper body than lower body regarding muscle mass and strength. Interestingly at the individual level, despite symmetrical lean leg muscle mass the heel-rise test showed the largest asymmetry. This finding indicates a mismatch in muscle function for the lower body.

  4. Association between earthquake events and cholera outbreaks: a cross-country 15-year longitudinal analysis.

    Science.gov (United States)

    Sumner, Steven A; Turner, Elizabeth L; Thielman, Nathan M

    2013-12-01

    Large earthquakes can cause population displacement, critical sanitation infrastructure damage, and increased threats to water resources, potentially predisposing populations to waterborne disease epidemics such as cholera. Problem The risk of cholera outbreaks after earthquake disasters remains uncertain. A cross-country analysis of World Health Organization (WHO) cholera data that would contribute to this discussion has yet to be published. A cross-country longitudinal analysis was conducted among 63 low- and middle-income countries from 1995-2009. The association between earthquake disasters of various effect sizes and a relative spike in cholera rates for a given country was assessed utilizing fixed-effects logistic regression and adjusting for gross domestic product per capita, water and sanitation level, flooding events, percent urbanization, and under-five child mortality. Also, the association between large earthquakes and cholera rate increases of various degrees was assessed. Forty-eight of the 63 countries had at least one year with reported cholera infections during the 15-year study period. Thirty-six of these 48 countries had at least one earthquake disaster. In adjusted analyses, country-years with ≥10,000 persons affected by an earthquake had 2.26 times increased odds (95 CI, 0.89-5.72, P = .08) of having a greater than average cholera rate that year compared to country-years having earthquake. The association between large earthquake disasters and cholera infections appeared to weaken as higher levels of cholera rate increases were tested. A trend of increased risk of greater than average cholera rates when more people were affected by an earthquake in a country-year was noted. However these findings did not reach statistical significance at traditional levels and may be due to chance. Frequent large-scale cholera outbreaks after earthquake disasters appeared to be relatively uncommon.

  5. Effects of repetitive subconcussive head trauma on the neuropsychological test performance of high school athletes: A comparison of high, moderate, and low contact sports.

    Science.gov (United States)

    Tsushima, William T; Ahn, Hyeong Jun; Siu, Andrea M; Yoshinaga, Kara; Choi, So Yung; Murata, Nathan M

    2018-02-02

    The aim of this study was to examine the neuropsychological test results of non-concussed high school athletes playing at three different levels of contact sports. Based on the concussion risk data of 12 different sports, a High Contact group (n=2819; wrestling/martial arts, cheerleading, track and field, football), a Moderate Contact group (n=2323; softball, basketball, soccer), and a Low Contact group (n=1580; baseball, volleyball, water polo, tennis, cross-country) were formed and compared in terms of their scores on the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT). The results revealed that the High Contact group obtained small but statistically poorer performances in ImPACT Visual Memory, Visual Motor Speed, Impulse Control, and Total Symptom scores compared to the Moderate and Low Contact groups. The High Contact group also had poorer Reaction Time scores compared to the Low Contact group. No differences between the Moderate and Low Contact groups were noted. The findings, along with prior similar results, tentatively raise concerns that participant in high contact sports, exposed to repetitive subconcussive head trauma, may be at greater risk for lowered neuropsychological functioning and increased symptoms, compared to other high school athletes. In view of the preliminary nature of this investigation, more research into the effects of frequent head impacts in high school sports is strongly recommended.

  6. CERN launches high-school internship programme

    Science.gov (United States)

    Johnston, Hamish

    2017-07-01

    The CERN particle-physics lab has hosted 22 high-school students from Hungary in a pilot programme designed to show teenagers how science, technology, engineering and mathematics is used at the particle-physics lab.

  7. Junior High School Pupils' Perceptions of Air

    African Journals Online (AJOL)

    cce

    Abstract. The study examined Junior High School (JHS) pupils' ideas of the concept air. The ... Stavy (1991) reported that students in his physics class had ... Research studies found that even after having been taught the particulate theory and.

  8. HIV/AIDS health care challenges for cross- country migrants in low- and middle-income countries: a scoping review

    Directory of Open Access Journals (Sweden)

    Suphanchaimat R

    2014-02-01

    Full Text Available Rapeepong Suphanchaimat,1,2 Angkana Sommanustweechai,1 Chiraporn Khitdee,1 Chompoonut Thaichinda,1 Kanang Kantamaturapoj,3 Pattara Leelahavarong,4 Pensom Jumriangrit,1 Thitikorn Topothai,1 Thunthita Wisaijohn,1 Weerasak Putthasri1 1International Health Policy Program (IHPP, Ministry of Public Health, Nonthaburi, Thailand; 2Banphai Hospital, Khon Kaen, Thailand; 3Department of Social Sciences, Faculty of Social Sciences and Humanities, Mahidol University, Nakhon Pathom, Thailand; 4Health Intervention and Technology Assessment Program, Ministry of Public Health, Nonthaburi, Thailand Introduction: HIV/AIDS has been one of the world's most important health challenges in recent history. The global solidarity in responding to HIV/AIDS through the provision of antiretroviral therapy (ART and encouraging early screening has been proved successful in saving lives of infected populations in past decades. However, there remain several challenges, one of which is how HIV/AIDS policies keep pace with the growing speed and diversity of migration flows. This study therefore aimed to examine the nature and the extent of HIV/AIDS health services, barriers to care, and epidemic burdens among cross-country migrants in low- and middle-income countries. Methods: A scoping review was undertaken by gathering evidence from electronic databases and gray literature from the websites of relevant international initiatives. The articles were reviewed according to the defined themes: epidemic burdens of HIV/AIDS, barriers to health services and HIV/AIDS risks, and the operational management of the current health systems for HIV/AIDS. Results: Of the 437 articles selected for an initial screening, 35 were read in full and mapped with the defined research questions. A high HIV/AIDS infection rate was a major concern among cross-country migrants in many regions, in particular sub-Saharan Africa. Despite a large number of studies reported in Africa, fewer studies were found in

  9. High School Teacher Perceptions of Empowerment

    OpenAIRE

    Jacobs, Tricia Susan

    2014-01-01

    As the responsibilities of principals become more complex and as accountability becomes more evident in K-12 cultures, it becomes increasingly important that high school principals be trained to empower teachers. This paper examined the research concerning the conditions of the empowerment of teachers. More specifically, it measured high school teachers' perspectives concerning their levels of empowerment by their principals based on the four domains of empowerment: meaning, competence, sel...

  10. The New Urban High School: A Practitioner's Guide.

    Science.gov (United States)

    Big Picture Co., Cambridge, MA.

    In October 1996, the Big Picture Company set out to find six urban high schools that use school-to-work strategies as a lever for whole-school reform. In the schools finally selected for the New Urban High Schools Project, and in others examined for the study, "school-to-work" is a misnomer, because the majority of students are entering…

  11. School lunch and snacking patterns among high school students: Associations with school food environment and policies

    Directory of Open Access Journals (Sweden)

    Story Mary

    2005-10-01

    Full Text Available Abstract Objectives This study examined associations between high school students' lunch patterns and vending machine purchases and the school food environment and policies. Methods A randomly selected sample of 1088 high school students from 20 schools completed surveys about their lunch practices and vending machine purchases. School food policies were assessed by principal and food director surveys. The number of vending machines and their hours of operation were assessed by trained research staff. Results Students at schools with open campus policies during lunchtime were significantly more likely to eat lunch at a fast food restaurant than students at schools with closed campus policies (0.7 days/week vs. 0.2 days/week, p Conclusion School food policies that decrease access to foods high in fats and sugars are associated with less frequent purchase of these items in school among high school students. Schools should examine their food-related policies and decrease access to foods that are low in nutrients and high in fats and sugars.

  12. Highlighting High Performance: Whitman Hanson Regional High School; Whitman, Massachusetts

    Energy Technology Data Exchange (ETDEWEB)

    2006-06-01

    This brochure describes the key high-performance building features of the Whitman-Hanson Regional High School. The brochure was paid for by the Massachusetts Technology Collaborative as part of their Green Schools Initiative. High-performance features described are daylighting and energy-efficient lighting, indoor air quality, solar and wind energy, building envelope, heating and cooling systems, water conservation, and acoustics. Energy cost savings are also discussed.

  13. Marketization in Long-Term Care: A Cross-Country Comparison of Large For-Profit Nursing Home Chains

    Science.gov (United States)

    Harrington, Charlene; Jacobsen, Frode F; Panos, Justin; Pollock, Allyson; Sutaria, Shailen; Szebehely, Marta

    2017-01-01

    This article presents cross-country comparisons of trends in for-profit nursing home chains in Canada, Norway, Sweden, United Kingdom, and the United States. Using public and private industry reports, the study describes ownership, corporate strategies, costs, and quality of the 5 largest for-profit chains in each country. The findings show that large for-profit nursing home chains are increasingly owned by private equity investors, have had many ownership changes over time, and have complex organizational structures. Large for-profit nursing home chains increasingly dominate the market and their strategies include the separation of property from operations, diversification, the expansion to many locations, and the use of tax havens. Generally, the chains have large revenues with high profit margins with some documented quality problems. The lack of adequate public information about the ownership, costs, and quality of services provided by nursing home chains is problematic in all the countries. The marketization of nursing home care poses new challenges to governments in collecting and reporting information to control costs as well as to ensure quality and public accountability. PMID:28634428

  14. Epidemiology of stress fracture injuries among US high school athletes, 2005-2006 through 2012-2013.

    Science.gov (United States)

    Changstrom, Bradley G; Brou, Lina; Khodaee, Morteza; Braund, Cortney; Comstock, R Dawn

    2015-01-01

    High school athletes in the United States sustain millions of injuries annually, approximately 10% of which are fractures. However, there is no clear estimate of the number of stress fractures sustained by high school athletes annually despite reports that stress fractures account for 0.7% to 20% of injuries seen in sports medicine clinics. This suggests a high utilization of resources for a potentially preventable injury. In addition, stress fractures have been associated with low energy availability and disordered eating in young athletes, highlighting the importance of early recognition and intervention. To investigate stress fracture rates and patterns in a large national sample of US high school athletes. Descriptive epidemiologic study. Data from High School RIO (Reporting Information Online), a national sports injury surveillance study, were analyzed to describe rates and patterns of stress fracture injury sustained from 2005-2006 through 2012-2013, across sports and by sex. From 2005-2006 through 2012-2013, a total of 51,773 injuries were sustained during 25,268,873 athlete-exposures, of which 389 (0.8%) were stress fractures, resulting in an overall stress fracture rate of 1.54 per 100,000 athlete-exposures. Rates per 100,000 athlete-exposures were highest in girls' cross country (10.62), girls' gymnastics (7.43), and boys' cross country (5.42). In sex-comparable sports, girls sustained more stress fractures (63.3%) than did boys (36.7%) and had higher rates of stress fracture (2.22 vs 1.27; rate ratio, 1.75; 95% CI, 1.38-2.23). The most commonly injured sites were the lower leg (40.3% of all stress fractures), foot (34.9%), and lower back/lumbar spine/pelvis (15.2%). Management was nonsurgical in 98.7% of the cases, and 65.3% of injuries resulted in ≥3 weeks of time loss, medical disqualification, or an end to the season before athletes could return to play. Although a rare injury, stress fractures cause considerable morbidity for high school athletes

  15. Who's Teaching What in High School Physics?

    Science.gov (United States)

    White, Susan; Tyler, John

    2015-01-01

    During the 2012-13 school year, approximately 27,000 teachers taught at least one physics course in a U.S. high school. About one-third of those teachers have earned a degree in physics or physics education; the vast majority of the others have earned degrees in a variety of other science fields. About 53,000 physics classes were taught, ranging…

  16. Cyberbullying Among Greek High School Adolescents.

    Science.gov (United States)

    Gkiomisi, Athanasia; Gkrizioti, Maria; Gkiomisi, Athina; Anastasilakis, Dimitrios A; Kardaras, Panagiotis

    2017-05-01

    To investigate the presence of cyberbullying among Greek students and the efficacy of proposed preventive interventions. Three types of high schools (private, experimental and public) with different politics on on-line aggression were enrolled. All students of the aforementioned schools were asked to complete an anonymous questionnaire. Around 62 % of the high school students experienced cyberbullying by electronic means, especially by cell phone, mostly the public school students (p 0.008). The bully was a stranger in more than 40 % of the cases. Over 60 % of the victims had not seeked help but dealt with the attack on their own. Only 20 % of the victims manifested sleep or eating disorders, physical/ psychological symptoms or changes in their social life as a consequence of the cyber-attack. Cyberbullying is a usual phenomenon among high school students. The bully is frequently unacquainted to the victim. Most of the victims are not physically or psychologically affected by the cyber-attack and do not share the event with anyone. There was a slight difference in the response of the students to cyberbullying among the different school politics of on-line aggression.

  17. Comparisons of Perceived Training Doses in Champion Collegiate-Level Male and Female Cross-country Runners and Coaches over the Course of a Competitive Season.

    Science.gov (United States)

    Barnes, Kyle R

    2017-10-17

    Session rating of perceived exertion (sRPE) is a practical tool for coaches to assess internal training load of their athletes. In a sport like cross-country running, that is individual in nature, but has a team training and competition component, information about the association between external and internal load is lacking. Furthermore, there is a need for studies that examine perception of training doses across multiple training cycles including the competitive season as well as between male and female athletes. Session RPE, duration, and training load (TL RPE  = sRPE × duration) of 25 highly trained male and female cross-country runners and their coaches were recorded for every training session (110 days) throughout a collegiate cross-country season. Intensity (sRPE), duration, and TL RPE were compared between coaches and runners by gender separately. Training sessions were also analyzed by those intended by the coaches to be easy, moderate, and hard as well as by training period. Data from 3024 training sessions were collected, 62% of which were considered "easy," 18% "moderate," and 20% "hard." Men and women rated coach-intended easy sessions significantly harder during each month of the season (effect size (ES) > 2.9, p sessions significantly higher than coaches (ES ≥ 1.0, p ≤ 0.002), whereas females rated hard intensity sessions significantly lower than coaches (ES > 0.5, p sessions (ES  0.05) or females and coach's moderate sessions (ES  0.05). Training intensity and TL RPE tended to increase throughout the season (p > 0.05), with a significant increase in moderate and hard intensity sessions in the last training period (p training throughout the cross-country season. Given the success of the athletes in this study, these results show how a simple system for monitoring training such as the sRPE method may improve control of training variables and provide a useful tool for coaches to evaluate training load placed on

  18. Multimodal Behavior Therapy: Case Study of a High School Student.

    Science.gov (United States)

    Seligman, Linda

    1981-01-01

    A case study of a high school student concerned with weight problems illustrates multimodal behavior therapy and its use in a high school setting. Multimodal therapy allows the school counselor to maximize referral sources while emphasizing growth and actualization. (JAC)

  19. Cross-country Differences in Reporting Practices – the Case of Provisions for Liabilities

    Directory of Open Access Journals (Sweden)

    Katarzyna Klimczak

    2017-11-01

    Full Text Available Purpose: The aim of the study was to explore and compare reporting practices on provisions for liabilities in different countries. Methodology: The research was limited to the types of provisions that are addressed in the International Accounting Standard 37 - Provisions, Contingent Liabilities and Contingent Assets. For the purpose of the study, financial statements of the biggest public companies in Great Britain, Germany and Poland have been chosen to be taken into consideration. The following detailed issues have been explored: - Presentation of the types of provisions in a statement of financial position and additional notes to a financial statement, - Presentation of the amounts of provisions made, used, and reversed during a given period and the effects of changes in the discount rate, - Scope and quality of descriptions of the nature of obligations presented by entities. The results of the analysis have been viewed from two perspectives - the areas of compliance and non-compliance of reporting on provisions with IFRS have been identified and a comparison of the extent of compliance with particular requirements between companies from different countries has been developed. Findings: The results of the analysis have revealed that companies from selected countries demonstrate different levels of compliance with International Financial Reporting Standards (IFRS. Substantial differences in the scope and the quality of descriptive disclosures on provisions have been also identified. Originality/value: The study contributes to the research on cross-country differences in reporting practices and indicates the need for a further analysis of the underlying determinants

  20. Heart rate profiles and energy cost of locomotion during cross-country skiing races.

    Science.gov (United States)

    Mognoni, P; Rossi, G; Gastaldelli, F; Canclini, A; Cotelli, F

    2001-07-01

    The purpose of this study was to compare heart rate responses and speed in two cross-country skiing races, which were run by seven male and seven female subjects by using classic and free style. Heart rates and skiing velocities were analyzed over flat, uphill and downhill sections, which were run from one to three times. Heart rates were higher in uphill sections than in flat sections; a steady-state heart rate was never reached in the downhill section. When the same uphill section was repeated, the heart rate tended to increase but the speed to decrease. Oxygen uptake (VO2) was calculated from heart rate:VO2 ratio, measured during uphill walking with the aid of poles. The mean (SD) energy cost of locomotion (i.e., the ratio between net VO2 and speed) was 162.1 (9.4) ml.km(-1).kg(-1) and 147.7 (7.1) ml.km(-1).kg(-1) when male subjects ran the flat section after first downhill by using classic and free style, respectively. Females had lower values for VO2 and speed, but similar energy costs. In general, the variability of the energy cost of locomotion in skiers of a similar competitive level is of the same order as that found in uphill walking on a treadmill.

  1. Corruption costs lives: a cross-country study using an IV approach.

    Science.gov (United States)

    Lio, Mon-Chi; Lee, Ming-Hsuan

    2016-04-01

    This study quantitatively estimates the effects of corruption on five major health indicators by using recent cross-country panel data covering 119 countries for the period of 2005-2011. The corruption indicators provided by the World Bank and Transparency International are used, and both the two-way fixed effect and the two-stage least squares approaches are employed for our estimation. The estimation results show that, in general, corruption is negatively associated with a country's health outcomes. A lower level of corruption or a better control of corruption in a country can lead to longer life expectancy, a lower infant mortality rate and a lower under-five mortality rate for citizens. However, our estimation finds no significant association between corruption and individual diseases including human immunodeficiency virus prevalence and tuberculosis incidence. The findings suggest that corruption reduction itself is an effective method to promote health. Copyright © 2015 John Wiley & Sons, Ltd. Copyright © 2015 John Wiley & Sons, Ltd.

  2. Is it possible to develop a cross-country test of social interaction?

    Science.gov (United States)

    Berg, Brett; Atler, Karen; Fisher, Anne G

    2017-11-01

    The Evaluation of Social Interaction (ESI) is used in Asia, Australia, North America and Europe. What is considered to be appropriate social interaction, however, differs amongst countries. If social interaction varies, the relative difficulty of the ESI items and types of social exchange also could vary, resulting in differential item functioning (DIF) and test bias in the form of differential test functioning (DTF). Yet, because the ESI scoring criteria are designed to account for culture, the ESI should be free of DIF and DTF. The purpose, therefore, was to determine whether the ESI demonstrates DIF or DTF related to country. A retrospective, descriptive, cross-sectional study of 9811 participants 2-102 years, 55% female, from 12 countries was conducted using many-facet Rasch analyses. DIF analyses compared paired item and social exchange type values by country against a critical effect size (±0.55 logit). DTF analyses compared paired ESI measures by country to 95% confidence intervals. All paired social exchange types and 98.3% of paired items differed by less than ±0.55 logit. All persons fell within 95% confidence intervals. Minimal DIF resulted in no test bias, supporting the cross-country validity of the ESI.

  3. Speed and heart-rate profiles in skating and classical cross-country skiing competitions.

    Science.gov (United States)

    Bolger, Conor M; Kocbach, Jan; Hegge, Ann Magdalen; Sandbakk, Øyvind

    2015-10-01

    To compare the speed and heart-rate profiles during international skating and classical competitions in male and female world-class cross-country skiers. Four male and 5 female skiers performed individual time trials of 15 km (men) and 10 km (women) in the skating and classical techniques on 2 consecutive days. Races were performed on the same 5-km course. The course was mapped with GPS and a barometer to provide a valid course and elevation profile. Time, speed, and heart rate were determined for uphill, flat, and downhill terrains throughout the entire competition by wearing a GPS and a heart-rate monitor. Times in uphill, flat, and downhill terrain were ~55%, 15-20%, and 25-30%, respectively, of the total race time for both techniques and genders. The average speed differences between skating and classical skiing were 9% and 11% for men and women, respectively, and these values were 12% and 15% for uphill, 8% and 13% for flat (all P skating and classical, respectively, with corresponding numbers of 11% and 14% for uphill, 6% and 11% for flat, and 4% and 5% for downhill terrain (all P skating and classical techniques and between the 2 genders were found on uphill terrain. Therefore, these speed differences could not be explained by variations in exercise intensity.

  4. Identification of Cross-Country Skiing Movement Patterns Using Micro-Sensors

    Directory of Open Access Journals (Sweden)

    Dale Chapman

    2012-04-01

    Full Text Available This study investigated the potential of micro-sensors for use in the identification of the main movement patterns used in cross-country skiing. Data were collected from four elite international and four Australian athletes in Europe and in Australia using a MinimaxXTM unit containing accelerometer, gyroscope and GPS sensors. Athletes performed four skating techniques and three classical techniques on snow at moderate velocity. Data from a single micro-sensor unit positioned in the centre of the upper back was sufficient to visually identify cyclical movement patterns for each technique. The general patterns for each technique were identified clearly across all athletes while at the same time distinctive characteristics for individual athletes were observed. Differences in speed, snow condition and gradient of terrain were not controlled in this study and these factors could have an effect on the data patterns. Development of algorithms to process the micro-sensor data into kinematic measurements would provide coaches and scientists with a valuable performance analysis tool. Further research is needed to develop such algorithms and to determine whether the patterns are consistent across a range of different speeds, snow conditions and terrain, and for skiers of differing ability.

  5. Cardiovascular and metabolic adaptations in horses competing in cross-country events.

    Science.gov (United States)

    Muñoz, A; Riber, C; Santisteban, R; Rubio, M D; Agüera, E I; Castejón, F M

    1999-01-01

    The cardiovascular and metabolic response to two cross-country events (CC*: preliminary level and CC*** advanced level) were analysed in 8 male eventing horses (4 Anglo-Hunter and 4 Anglo-Arabian). This study focused on the establishment of the main metabolic pathways involved in the muscle energy resynthesis during the competitions. Heart rate (HR) was recorded throughout the CC events. Jugular venous blood samples were withdrawn before the warm-up period, immediately after the competitions and at 5 and 10 min in the recuperation period. The following haematological parameters were studied: red blood cells (RBC), packed cell volume (PCV), haemoglobin concentration (Hb), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), white blood cells (WBC), and number and percentages of lymphocytes (LYM) and granulocytes and monocytes (GRAN). One fraction of blood was centrifuged and, in plasma, lactate (LA), total plasma protein (TPP) and the rate of LA disappearance were determined. The competitions induced significant increases in RBC, Hb, PCV, MCV and TPP. Plasma LA response exceeded the anaerobic threshold of 4 mmol/l, reaching a maximum level of 13.3 mmol/l. HR ranged from 140 to more than 200 bpm, peaking at 230 bpm, revealing a limitation in the oxygen supply to the working muscles. It was concluded that muscle energy resynthesis during a CC event is provided both through oxidative processes and glycolysis with LA formation. Therefore, both stamina and power exercises are required for eventing horses.

  6. Global digital divide: determinants of cross-country ICT development with special reference to Southeast Asia

    Directory of Open Access Journals (Sweden)

    Debbra Toria Nipo

    2014-09-01

    Full Text Available Information and communication technology (ICT tools are regarded as imperative not only for enabling the economy to grow at a healthy rate, but also for elevating the socioeconomic conditions and standards of the society. In concurrence with the widespread diffusion of ICT, lies the phenomenon called digital divide – a complex issue pertaining to unequal access, use and applications of ICT among countries and peoples. This paper attempts to measure the contribution of conventional factors such as affordability, infrastructure, trade openness and urbanization, with added emphasis on the role of financial development in explaining cross-country development of ICT among Southeast Asian countries. Using panel data for 4 countries for the period 1994 – 2011, findings of this study revealed that GDP is the most significant determinant in explaining digital divide – consistent with findings from previous research efforts. Financial development also appear significant in most models adopted in all three ICT tools, implying the need for these countries to improve their financial markets to avoid falling further behind in promoting a digitally inclusive society.

  7. The impact of the fourth industrial revolution: a cross-country/region comparison

    Directory of Open Access Journals (Sweden)

    Yongxin Liao

    2018-01-01

    Full Text Available Abstract The fourth industrial revolution stimulates the advances of science and technology, in which the Internet of Things (IoT and its supporting technologies serve as backbones for Cyber-Physical Systems (CPS and smart machines are used as the promoters to optimize production chains. Such advancement goes beyond the organizational and territorial boundaries, comprising agility, intelligence, and networking. This scenario triggers governmental efforts that aim at defining guidelines and standards. The speed and complexity of the transition to the new digitalization era in a globalized environment, however, does not yet allow a common and coordinated understanding of the impacts of the actions undertaken in different countries and regions. The aim of this paper, therefore, is to bridge this gap through a systematic literature review that identifies the most influential public policies and evaluates their existing differences. This cross-country/region comparison provides a worldwide panorama of public policies' durations, main objectives, available funding, areas for action, focused manufacturing sectors, and prioritized technologies. Findings of this review can be used as the basis to analyse the position of a country against the existing challenges imposed towards its own industrial infrastructure and also to coordinate its public policies.

  8. Superconductors in the High School Classroom

    Science.gov (United States)

    Lincoln, James

    2017-01-01

    In this article, we discuss the behavior of high-temperature superconductors and how to demonstrate them safely and effectively in the high school or introductory physics classroom. Included here is a discussion of the most relevant physics topics that can be demonstrated, some safety tips, and a bit of the history of superconductors. In an effort…

  9. High School Teacher Perceptions of Empowerment

    Science.gov (United States)

    Jacobs, Tricia S.

    2014-01-01

    As the responsibilities of principals become more complex and as accountability becomes more evident in K-12 cultures, it becomes increasingly important that high school principals be trained to empower teachers. This paper examined the research concerning the conditions of the empowerment of teachers. More specifically, it measured high school…

  10. Global Ethics in a High School Curriculum.

    Science.gov (United States)

    Sappir, Susan

    1998-01-01

    Raphi Amram, the late director of Israel's Society for Excellence Through Education, founded the Ethics in Science and Humanities Program operating in Israel and five other countries. Though the ethics program currently operates only in high schools serving high-achieving or gifted students, founders emphasize the universality of its appeal.…

  11. Competencies Used to Evaluate High School Coaches.

    Science.gov (United States)

    Gratto, John

    1983-01-01

    Studies of how to evaluate high school coaches' effectiveness found that most respondents felt that principals, athletic directors, and coaches should jointly arrive at a method of evaluation. Coaching competencies rated most highly included prevention and care of athletic injuries, supervision, and consistent discipline. Other valued competencies…

  12. Gait analysis by high school students

    NARCIS (Netherlands)

    Heck, A.; van Dongen, C.

    2008-01-01

    Human walking is a complicated motion. Movement scientists have developed various research methods to study gait. This article describes how a high school student collected and analysed high quality gait data in much the same way that movement scientists do, via the recording and measurement of

  13. 25 CFR 39.145 - Can a school receive both a small school adjustment and a small high school adjustment?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Can a school receive both a small school adjustment and a small high school adjustment? 39.145 Section 39.145 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR EDUCATION THE INDIAN SCHOOL EQUALIZATION PROGRAM Indian School Equalization Formula Small School...

  14. Sequence Curriculum: High School to College. Middlesex Community College/Haddam-Killingworth High School. Final Report.

    Science.gov (United States)

    Middlesex Community Coll., Middletown, CT.

    Through a collaborative effort between Middlesex Community College (MxCC) and Haddam-Killingworth High School (HKHS), students taking specific high school courses in television production, broadcast journalism, electronics, and photography are granted college credit by MxCC upon admission to the college's Broadcast Communication Program. The…

  15. After Installation: Ubiquitous Computing and High School Science in Three Experienced, High-Technology Schools

    Science.gov (United States)

    Drayton, Brian; Falk, Joni K.; Stroud, Rena; Hobbs, Kathryn; Hammerman, James

    2010-01-01

    There are few studies of the impact of ubiquitous computing on high school science, and the majority of studies of ubiquitous computing report only on the early stages of implementation. The present study presents data on 3 high schools with carefully elaborated ubiquitous computing systems that have gone through at least one "obsolescence cycle"…

  16. Comparison of physical activities of female football players in junior high school and high school.

    Science.gov (United States)

    Inoue, Yuri; Otani, Yoshitaka; Takemasa, Seiichi

    2017-08-01

    [Purpose] This study aimed to compare physical activities between junior high school and high school female football players in order to explain the factors that predispose to a higher incidence of sports injuries in high school female football players. [Subjects and Methods] Twenty-nine female football players participated. Finger floor distance, the center of pressure during single limb stance with eyes open and closed, the 40-m linear sprint time, hip abduction and extension muscle strength and isokinetic knee flexion and extension peak torque were measured. The modified Star Excursion Balance Test, the three-steps bounding test and three-steps hopping tests, agility test 1 (Step 50), agility test 2 (Forward run), curl-up test for 30 seconds and the Yo-Yo intermittent recovery test were performed. [Results] The high school group was only significantly faster than the junior high school group in the 40-m linear sprint time and in the agility tests. The distance of the bounding test in the high school group was longer than that in the junior high school group. [Conclusion] Agility and speed increase with growth; however, muscle strength and balance do not develop alongside. This unbalanced development may cause a higher incidence of sports injuries in high school football players.

  17. Sport type and interpersonal and intrapersonal predictors of body dissatisfaction in high school female sport participants.

    Science.gov (United States)

    Karr, Trisha M; Davidson, Denise; Bryant, Fred B; Balague, Gloria; Bohnert, Amy M

    2013-03-01

    Through multiple group structural equation modeling analyses, path models were used to test the predictive effects of sport type and both interpersonal (i.e., mothers' body dissatisfaction, family dynamics) and intrapersonal factors (i.e., athletic self-efficacy, body mass index [BMI]) on high school female sport participants' (N=627) body dissatisfaction. Sport types were classified as esthetic/lean (i.e., gymnastics), non-esthetic/lean (i.e., cross-country), or non-esthetic/non-lean (i.e., softball). Most participants reported low body dissatisfaction, and body dissatisfaction did not differ across sport types. Nevertheless, mothers' body dissatisfaction was positively associated with daughters' body dissatisfaction for non-esthetic/lean and non-esthetic/non-lean sport participants, and high family cohesion was predictive of body dissatisfaction among non-esthetic/lean sport participants. Across sport types, higher BMI was associated with greater body dissatisfaction, whereas greater athletic self-efficacy was associated with lower body dissatisfaction. These findings highlight the complex relationship between interpersonal and intrapersonal factors and body dissatisfaction in adolescent female sport participants. Copyright © 2012. Published by Elsevier Ltd.

  18. Freedom of Expression for High School Journalists: A Case Study of Selected North Carolina Public Schools.

    Science.gov (United States)

    Phillips, Kay D.

    A study examined the freedom of the high school press in North Carolina to determine whether publication guidelines should be in place, and if so, what those guidelines should contain. High school newspaper advisors, high school principals, and high school newspaper editors from large and small, urban and rural, eastern and western high schools…

  19. Cross-Country Variation in Adult Skills Inequality: Why Are Skill Levels and Opportunities so Unequal in Anglophone Countries?

    Science.gov (United States)

    Green, Andy; Green, Francis; Pensiero, Nicola

    2015-01-01

    This article examines cross-country variations in adult skills inequality and asks why skills in Anglophone countries are so unequal. Drawing on the Organization for Economic Cooperation and Development's recent Survey of Adult Skills and other surveys, it investigates the differences across countries and country groups in inequality in both…

  20. Lessons from a comparative (cross-country) study using conjoint analysis: Why not use all the information?

    DEFF Research Database (Denmark)

    Blunch, Niels Johan

    Re-examination of data from two comparative (cross-country) studies using conjoint analysis shows that significant improvement can be achieved by using two often neglected kinds of a priori information: Knowledge of the expected order of preferences for the various levels of one or more attributes...

  1. The Russians Are the Fastest in Marathon Cross-Country Skiing: The “Engadin Ski Marathon”

    Directory of Open Access Journals (Sweden)

    Pantelis Theodoros Nikolaidis

    2017-01-01

    Full Text Available It is well known that athletes from a specific region or country are dominating certain sports disciplines such as marathon running or Ironman triathlon; however, little relevant information exists on cross-country skiing. Therefore, the aim of the present study was to investigate the aspect of region and nationality in one of the largest cross-country skiing marathons in Europe, the “Engadin Ski Marathon.” All athletes (n=197,125 who finished the “Engadin Ski Marathon” between 1998 and 2016 were considered. More than two-thirds of the finishers (72.5% in women and 69.6% in men were Swiss skiers, followed by German, Italian, and French athletes in both sexes. Most of the Swiss finishers were from Canton of Zurich (20.5%, Grisons (19.2%, and Berne (10.3%. Regarding performance, the Russians were the fastest and the British the slowest. Considering local athletes, finishers from Canton of Uri and Glarus were the fastest and those from Canton of Geneva and Basel the slowest. Based on the findings of the present study, it was concluded that local athletes were not the fastest in the “Engadin Ski Marathon.” Future studies need to investigate other cross-country skiing races in order to find the nationalities and regions of the fastest cross-country skiers.

  2. Effect of Nanotechnology Instructions on Senior High School Students

    Science.gov (United States)

    Lu, Chow-Chin; Sung, Chia-Chi

    2011-01-01

    In this research, we cooperate with senior high school teachers to understand current nanotechnology model of senior high school nanotechnology curriculum in Taiwan. Then design senior high school nanotechnology (nano-tech) curriculum to teach 503 senior high school students. After teaching the nano-tech curriculum we use the "Nanotechnology…

  3. Solutions for Failing High Schools: Converging Visions and Promising Models.

    Science.gov (United States)

    Legters, Nettie; Balfanz, Robert; McPartland, James

    Promising solutions to the failings of traditional comprehensive high schools were reviewed to identify basic principles and strategies for improving high schools nationwide. Selected research studies, policy documents, and promising high school programs were reviewed. The review revealed the following principles for helping high schools better…

  4. Development of an Attitude Scale towards High School Physics Lessons

    Science.gov (United States)

    Yavas, Pervin Ünlü; Çagan, Sultan

    2017-01-01

    The aim of this study was to develop a Likert type attitude scale for high school students with regard to high school physics lessons. The research was carried out with high school students who were studying in Ankara. First, the opinions of 105 high school students about physics lessons were obtained and then 55 scale items were determined from…

  5. Developing High School Geoscientists through Summer Internships

    Science.gov (United States)

    Saltzman, J.

    2012-12-01

    High school students in the San Francisco Bay Area have the opportunity to contribute to Earth sciences research during the summer at Stanford University. The School of Earth Sciences hosts about 25 high school students each summer to support ongoing research, through more than just washing glassware. To increase diversity in the geosciences, we select students from diverse backgrounds through an application process which lessens the burden on busy faculty. The students work for 15-20 hours per week under the supervision of graduate students or postdoctoral fellows. The supervisors come to value the interns for a few reasons: not only are they getting some extra help with their research, but they are getting teaching experience in an informal but powerful way and supervising the interns' work over the summer. Another key part of the internship is bringing all of the interns together regularly. Whether it is for career talks, lab tours or field trip, high school students find kindred spirits in the group. Another important reason for weekly gatherings is to introduce the students to the wide field of Earth sciences and the different approaches and paths that scientists take. The summer ends with a culminating event where interns make short informal presentations about their research which give them an opportunity to articulate the big questions they have been helping to answer. Some interns are also invited to present a poster in a session for high school students at the Fall AGU meeting. These experiences of working in the laboratory and communicating about the research are part of the world of Earth sciences that are absent for most youth. The high school internships foster good will between Stanford and the local communities, help develop a more Earth and environmentally knowledgeable public and may have a long-term affect on diversifying the geosciences by exposing more young people to these fields.

  6. Assessment of Heart Rate Variability Thresholds from Incremental Treadmill Tests in Five Cross-Country Skiing Techniques.

    Directory of Open Access Journals (Sweden)

    Ibai Mendia-Iztueta

    Full Text Available The assessment of heart rate variability (HRV thresholds (HRVTs as an alternative of Ventilatory thresholds (VTs is a relatively new approach with increasing popularity which has not been conducted in cross-country (XC skiing yet. The main purpose of the present study was to assess HRVTs in the five main XC skiing-related techniques, double poling (DP, diagonal striding (DS, Nordic walking (NW, V1 skating (V1, and V2 skating (V2.Ten competitive skiers completed these incremental treadmill tests until exhaustion with a minimum of one to two recovery days in between each test. Ventilatory gases, HRV and poling frequencies were measured. The first HRV threshold (HRVT1 was assessed using two time-domain analysis methods, and the second HRV threshold (HRVT2 was assessed using two non-time varying frequency-domain analysis methods. HRVT1 was assessed by plotting the mean successive difference (MSD and standard deviation (SD of normalized R-R intervals to workload. HRVT1 was assessed by plotting high frequency power (HFP and the HFP relative to respiratory sinus arrhythmia (HFPRSA with workload. HRVTs were named after their methods (HRVT1-SD; HRVT1-MSD; HRVT2-HFP; HRVT2-HFP-RSA. The results showed that the only cases where the proposed HRVTs were good assessors of VTs were the HRVT1-SD of the DS test, the HRVT1-MSD of the DS and V2 tests, and the HRVT2-HFP-RSA of the NW test. The lack of a wider success of the assessment of HRVTs was reasoned to be mostly due to the high entrainment between the breathing and poling frequencies. As secondary finding, a novel Cardiolocomotor coupling mode was observed in the NW test. This new Cardiolocoomtor coupling mode corresponded to the whole bilateral poling cycle instead of corresponding to each poling action as it was reported to the date by the existing literature.

  7. Developing Cloud Chambers with High School Students

    Science.gov (United States)

    Ishizuka, Ryo; Tan, Nobuaki; Sato, Shoma; Zeze, Syoji

    The result and outcome of the cloud chamber project, which aims to develop a cloud chamber useful for science education is reported in detail. A project includes both three high school students and a teacher as a part of Super Science High School (SSH) program in our school. We develop a dry-ice-free cloud chamber using salt and ice (or snow). Technical details of the chamber are described. We also argue how the project have affected student's cognition, motivation, academic skills and behavior. The research project has taken steps of professional researchers, i.e., in planning research, applying fund, writing a paper and giving a talk in conferences. From interviews with students, we have learnt that such style of scientific activity is very effective in promoting student's motivation for learning science.

  8. Transition from high schools to engineering education

    DEFF Research Database (Denmark)

    Kolmos, Anette; Holgaard, Jette Egelund; Clausen, Nicolaj Riise

    2017-01-01

    Pre-university engineering education has received increasing attention to attract more students to engineering and make them better prepared to enter engineering studies at university level. Denmark is one of the countries that offer established high school curriculum that makes engineering...... the core identity of the school. In a longitudinal research project, the cohort of all Danish engineering students who were enrolled in 2010 has been followed. This study takes a quantitative approach to highlight the differences in preparedness for engineering students who have a background...... themselves as being better prepared in relation to the conduct of experiments, engineering analysis and tolls, as well as in relation to process competences as design, problem solving and teamwork. The students from the profession-oriented high schools also find themselves better prepared in relation...

  9. Early predictors of high school mathematics achievement.

    Science.gov (United States)

    Siegler, Robert S; Duncan, Greg J; Davis-Kean, Pamela E; Duckworth, Kathryn; Claessens, Amy; Engel, Mimi; Susperreguy, Maria Ines; Chen, Meichu

    2012-07-01

    Identifying the types of mathematics content knowledge that are most predictive of students' long-term learning is essential for improving both theories of mathematical development and mathematics education. To identify these types of knowledge, we examined long-term predictors of high school students' knowledge of algebra and overall mathematics achievement. Analyses of large, nationally representative, longitudinal data sets from the United States and the United Kingdom revealed that elementary school students' knowledge of fractions and of division uniquely predicts those students' knowledge of algebra and overall mathematics achievement in high school, 5 or 6 years later, even after statistically controlling for other types of mathematical knowledge, general intellectual ability, working memory, and family income and education. Implications of these findings for understanding and improving mathematics learning are discussed.

  10. An Analysis of Florida's School Districts' Attendance Policies and their Relationship to High School Attendance Rates

    Science.gov (United States)

    Reardon, Ryan Turner

    2008-01-01

    The purpose of this non-experimental correlational study was to determine the relationship between the type of attendance policies in the high schools of the 67 Florida school districts, the size of the school district (number of high school students), the socioeconomic status SES) of the school district, and the average daily attendance rate of…

  11. School Start Times for Middle School and High School Students - United States, 2011-12 School Year.

    Science.gov (United States)

    Wheaton, Anne G; Ferro, Gabrielle A; Croft, Janet B

    2015-08-07

    Adolescents who do not get enough sleep are more likely to be overweight; not engage in daily physical activity; suffer from depressive symptoms; engage in unhealthy risk behaviors such as drinking, smoking tobacco, and using illicit drugs; and perform poorly in school. However, insufficient sleep is common among high school students, with less than one third of U.S. high school students sleeping at least 8 hours on school nights. In a policy statement published in 2014, the American Academy of Pediatrics (AAP) urged middle and high schools to modify start times as a means to enable students to get adequate sleep and improve their health, safety, academic performance, and quality of life. AAP recommended that "middle and high schools should aim for a starting time of no earlier than 8:30 a.m.". To assess state-specific distributions of public middle and high school start times and establish a pre-recommendation baseline, CDC and the U.S. Department of Education analyzed data from the 2011-12 Schools and Staffing Survey (SASS). Among an estimated 39,700 public middle, high, and combined schools* in the United States, the average start time was 8:03 a.m. Overall, only 17.7% of these public schools started school at 8:30 a.m. or later. The percentage of schools with 8:30 a.m. or later start times varied greatly by state, ranging from 0% in Hawaii, Mississippi, and Wyoming to more than three quarters of schools in Alaska (76.8%) and North Dakota (78.5%). A school system start time policy of 8:30 a.m. or later provides teenage students the opportunity to achieve the 8.5-9.5 hours of sleep recommended by AAP and the 8-10 hours recommended by the National Sleep Foundation.

  12. Muscle size, quality, and body composition: characteristics of division I cross-country runners.

    Science.gov (United States)

    Roelofs, Erica J; Smith-Ryan, Abbie E; Melvin, Malia N; Wingfield, Hailee L; Trexler, Eric T; Walker, Nina

    2015-02-01

    The primary purpose of this study was to identify the relationship between muscle cross-sectional area (mCSA), echo intensity (EI), and body composition of Division I cross-country runners. The secondary purpose was to examine differences in these variables in athletes stratified based on stress-fracture (SFx) history. Thirty-six athletes were stratified based on sex and SFx history. A panoramic scan vastus lateralis was performed using a GE Logiq-e B-mode ultrasound. Echo intensity and mCSA were determined from the scan using a grayscale imaging software (ImageJ). Body composition measures were determined using dual-energy x-ray absorptiometry. For females, mCSA was significantly correlated with left leg lean mass (LM; R = 0.54) and EI (R = -0.57). Lean mass was significantly correlated with bone mineral density (BMD; R = 0.58) and bone mineral content (BMC; R = 0.56), whereas BMC was also correlated with leg LM (R = 0.72). For males, mCSA was significantly correlated with leg LM (R = 0.66), BMD (R = 0.50), and BMC (R = 0.54). Leg LM was significantly correlated with BMD (R = 0.53) and BMC (R = 0.77). Personal best times for males were significantly correlated with fat mass (R = 0.489) and %fat (R = 0.556) for the 10- and 5-km races, respectively. Female and male athletes with a history of SFx were not significantly different across any variables when compared with athletes with no history. These correlations suggest that more muscle mass may associate with higher BMD and BMC for stronger bone structure. Modifications in training strategies to include heavy resistance training and plyometrics may be advantageous for preventing risk factors associated with SFx reoccurrence.

  13. Effects of exercise on the markers of iron status in serum of cross-country skiers

    Directory of Open Access Journals (Sweden)

    J Malczewska-Lenczowska

    2010-12-01

    Full Text Available The study aim was to assess the within-subject, day-to-day variability for ferritin and soluble transferrin receptor (sTfR concentrations in serum of 6 female and 8 male cross-country skiers aged 16-18 years under a regular training regimen throughout 8 consecutive days. The concentrations of iron status variables and creatine kinase (CK activities were adjusted to plasma volume changes. Mean ferritin concentrations were 30.6 • 1.142[sup]±1[/sup] and 22.6 • 1.167[sup]±1[/sup] μg/l for men and women, respectively, the average within-subject, mean day-to-day variability coefficients (CV being 13.4% in men and 15.2% in women. Mean sTfR was 2.14 • 1.050[sup]±1[/sup] and 2.62 • 1.047[sup]±1[/sup] mg/l, respectively, and mean day-to-day CV 6.5% and 4.6%. Mean CV for sTfR/logFerr were 6.0% and 7.4%, respectively. Neither index correlated with training loads or CK activities. Thus, the training performed once daily had no significant effect on ferritin concentrations on the following morning, so ferritin alone may prove insufficient in detecting iron deficiency in endurance athletes. The low variability of sTfR under endurance loads made it useful in detecting iron deficiency together with ferritin and the sTfR/logFerr index. Adjusting the concentrations of ferritin and sTfR by changes in plasma volume might be recommendable for endurance athletes.

  14. Coproducing flood risk management through citizen involvement: insights from cross-country comparison in Europe

    Directory of Open Access Journals (Sweden)

    Hannelore Mees

    2016-09-01

    Full Text Available Across Europe, citizens are increasingly expected to participate in the implementation of flood risk management (FRM, by engaging in voluntary-based activities to enhance preparedness, implementing property-level measures, and so forth. Although citizen participation in FRM decision making is widely addressed in academic literature, citizens' involvement in the delivery of FRM measures is comparatively understudied. Drawing from public administration literature, we adopted the notion of "coproduction" as an analytical framework for studying the interaction between citizens and public authorities, from the decision-making process through to the implementation of FRM in practice. We considered to what extent coproduction is evident in selected European Union (EU member states, drawing from research conducted within the EU project STAR-FLOOD (Strengthening and Redesigning European Flood Risk Practices towards Appropriate and Resilient Flood Risk Governance Arrangements. On the basis of a cross-country comparison between Flanders (Belgium, England (United Kingdom, France, the Netherlands, and Poland, we have highlighted the varied forms of coproduction and reflected on how these have been established within divergent settings. Coproduction is most prominent in discourse and practice in England and is emergent in France and Flanders. By contrast, FRM in the Netherlands and Poland remains almost exclusively reliant on governmental protection measures and thereby consultation-based forms of coproduction. Analysis revealed how these actions are motivated by different underlying rationales, which in turn shape the type of approaches and degree of institutionalization of coproduction. In the Netherlands, coproduction is primarily encouraged to increase societal resilience, whereas public authorities in the other countries also use it to improve cost-efficiency and redistribute responsibilities to its beneficiaries.

  15. Environmental policies and risk finance in the green sector: Cross-country evidence

    International Nuclear Information System (INIS)

    Criscuolo, Chiara; Menon, Carlo

    2015-01-01

    This paper provides a detailed description of venture capital investment in the green sector across 29 countries over the period 2005–2010, and identifies the role that policies might play in explaining observed cross-country differences. The analysis is based on a deal-level database of businesses seeking financing, combined with indicators of renewable policies and government R&D expenditures. The econometric analysis relates the number of deals and their volumes in a country to deployment and supply policies using count data and limited dependent variable (Tobit) models. The results suggest that both supply side policies and environmental deployment policies, designed with a long-term perspective of creating a market for environmental technologies, are associated with higher levels of venture capital relative to more short-term fiscal policies. When focusing on policies related to renewable energy generation, the results confirm the positive association of generous feed-in tariffs (FITs) with venture capital investment. However, in the solar sector excessively generous FITs tend to discourage investment, perhaps reflecting a lack of credibility over the longer term. Thus, both sets of results point to long-term policy stability, sustainability and credibility as important policy features to ensure Venture capital backing of innovative and risky ventures in a country's green sector. -- Highlights: •Risk-finance in the green sector is likely to face more challenges than in other hi-tech sectors. •Supply and deployment policies are associated with more investments relative to fiscal policies. •FITs have a positive effect, but in the solar sector very generous FITs discourage investments

  16. Information systems for mental health in six low and middle income countries: cross country situation analysis.

    Science.gov (United States)

    Upadhaya, Nawaraj; Jordans, Mark J D; Abdulmalik, Jibril; Ahuja, Shalini; Alem, Atalay; Hanlon, Charlotte; Kigozi, Fred; Kizza, Dorothy; Lund, Crick; Semrau, Maya; Shidhaye, Rahul; Thornicroft, Graham; Komproe, Ivan H; Gureje, Oye

    2016-01-01

    Research on information systems for mental health in low and middle income countries (LMICs) is scarce. As a result, there is a lack of reliable information on mental health service needs, treatment coverage and the quality of services provided. With the aim of informing the development and implementation of a mental health information sub-system that includes reliable and measurable indicators on mental health within the Health Management Information Systems (HMIS), a cross-country situation analysis of HMIS was conducted in six LMICs (Ethiopia, India, Nepal, Nigeria, South Africa and Uganda), participating in the 'Emerging mental health systems in low and middle income countries' (Emerald) research programme. A situation analysis tool was developed to obtain and chart information from documents in the public domain. In circumstances when information was inadequate, key government officials were contacted to verify the data collected. In this paper we compare the baseline policy context, human resources situation as well as the processes and mechanisms of collecting, verifying, reporting and disseminating mental health related HMIS data. The findings suggest that countries face substantial policy, human resource and health governance challenges for mental health HMIS, many of which are common across sites. In particular, the specific policies and plans for the governance and implementation of mental health data collection, reporting and dissemination are absent. Across sites there is inadequate infrastructure, few HMIS experts, and inadequate technical support and supervision to junior staff, particularly in the area of mental health. Nonetheless there are also strengths in existing HMIS where a few mental health morbidity, mortality, and system level indicators are collected and reported. Our study indicates the need for greater technical and resources input to strengthen routine HMIS and develop standardized HMIS indicators for mental health, focusing in

  17. Transitions from high school to college.

    Science.gov (United States)

    Venezia, Andrea; Jaeger, Laura

    2013-01-01

    The vast majority of high school students aspire to some kind of postsecondary education, yet far too many of them enter college without the basic content knowledge, skills, or habits of mind they need to succeed. Andrea Venezia and Laura Jaeger look at the state of college readiness among high school students, the effectiveness of programs in place to help them transition to college, and efforts to improve those transitions. Students are unprepared for postsecondary coursework for many reasons, the authors write, including differences between what high schools teach and what colleges expect, as well as large disparities between the instruction offered by high schools with high concentrations of students in poverty and that offered by high schools with more advantaged students. The authors also note the importance of noncurricular variables, such as peer influences, parental expectations, and conditions that encourage academic study. Interventions to improve college readiness offer a variety of services, from academic preparation and information about college and financial aid, to psychosocial and behavioral supports, to the development of habits of mind including organizational skills, anticipation, persistence, and resiliency. The authors also discuss more systemic programs, such as Middle College High Schools, and review efforts to allow high school students to take college classes (known as dual enrollment). Evaluations of the effectiveness of these efforts are limited, but the authors report that studies of precollege support programs generally show small impacts, while the more systemic programs show mixed results. Dual-enrollment programs show promise, but the evaluation designs may overstate the results. The Common Core State Standards, a voluntary set of goals and expectations in English and math adopted by most states, offer the potential to improve college and career readiness, the authors write. But that potential will be realized, they add, only if the

  18. Predicting Success in College Mathematics from High School Mathematics Preparation

    OpenAIRE

    Shepley, Richard A.

    1983-01-01

    The purpose of this study was to develop a model to predict the college mathematics courses a freshman could expect to pass by considering their high school mathematics preparation. The high school information that was used consisted of the student's sex, the student's grade point average in mathematics, the highest level of high school mathematics courses taken, and the number of mathematics courses taken in high school. The high school sample was drawn from graduated Seniors in the State...

  19. Examples from Astronomy for High School Physics

    Science.gov (United States)

    Dieterich, Sergio

    2016-01-01

    A formal course in physics is increasingly becoming a standard requirement in the high school curriculum. With that dissemination comes the challenge of reaching and motivating a population that is more diverse in their academic abilities and intrinsic motivation. The abstract nature of pure physics is often made more accessible when motivated by examples from everyday life, and providing copious mathematical as well as conceptual examples has become standard practice in high school physics textbooks. Astronomy is a naturally captivating subject and astronomical examples are often successful in capturing the curiosity of high school students as well as the general population. This project seeks to diversify the range of pedagogical materials available to the high school physics instructor by compiling and publishing specific examples where an astronomical concept can be used to motivate the physics curriculum. This collection of examples will consist of both short problems suitable for daily homework assignments as well as longer project style activities. Collaborations are encouraged and inquiries should be directed to sdieterich at carnegiescience dot edu.This work is funded by the NSF Astronomy and Astrophysics Postdoctoral Fellowship Program through NSF grant AST-1400680.

  20. Early Predictors of High School Mathematics Achievement

    Science.gov (United States)

    Siegler, Robert S.; Duncan, Greg J.; Davis-Kean, Pamela E.; Duckworth, Kathryn; Claessens, Amy; Engel, Mimi; Susperreguy, Maria Ines; Meichu, Chen

    2012-01-01

    Identifying the types of mathematics content knowledge that are most predictive of students' long-term learning is essential for improving both theories of mathematical development and mathematics education. To identify these types of knowledge, we examined long-term predictors of high school students' knowledge of algebra and overall mathematics…

  1. Teaching the EPR Paradox at High School?

    Science.gov (United States)

    Pospiech, Gesche

    1999-01-01

    Argues the importance of students at university and in the final years of high school gaining an appreciation of the principles of quantum mechanics. Presents the EPR gedanken experiment (thought experiment) as a method of teaching the principles of quantum mechanics. (Author/CCM)

  2. Complex Development Report: Moanalua High School.

    Science.gov (United States)

    Anbe, Aruga and Ishizu, Architects, Inc., Honolulu, HI.

    This report documents the planning process and the decisions involved in master planning a proposed Honolulu high school, and it provides guidance for the implementation of those increments remaining after phase one of the first increment had been completed in September 1972. Phase two of the first increment and the second increment are now under…

  3. Planning of high school examinations in Denmark

    DEFF Research Database (Denmark)

    Vidal, Rene Victor Valqui; Hansen, Michael Pilegaard

    1995-01-01

    This paper presents a computer based support system used to plan high school examinations in Denmark. We will discuss the methods and techniques used to solve such a complex and large scale combinatorial problem. Decomposition and other heuristic principles have been used extensively to develop...

  4. HUMANITIES IN A JUNIOR HIGH SCHOOL.

    Science.gov (United States)

    KNIGHT, BONNIE M.

    A HUMANITIES COURSE HAS BEEN DEVELOPED FOR ACADEMICALLY ABLE SEVENTH-GRADE STUDENTS IN BRANCIFORTE JUNIOR HIGH SCHOOL IN SANTA CRUZ, CALIFORNIA. IN A TWO-PERIOD DAILY TIME BLOCK, STUDENTS LEARN ENGLISH, LITERATURE, AND LATIN, AND INVESTIGATE TOPICS IN ARCHEOLOGY, CULTURAL ANTHROPOLOGY, LINGUISTICS, PSYCHOLOGY, PHILOSOPHY, GREEK LITERATURE AND…

  5. Job Satisfaction of High School Journalism Educators.

    Science.gov (United States)

    Dvorak, Jack; Phillips, Kay D.

    Four research questions are posed to explore the job satisfaction of high school journalism educators. A national random sample of 669 respondents shows that journalism educators are generally satisfied with their jobs--more so than teachers in other disciplines. Multiple regression analysis using Herzberg's motivation-hygiene theory as a…

  6. The Gravity Model for High School Students

    Science.gov (United States)

    Tribble, Paul; Mitchell, William A.

    1977-01-01

    The authors suggest ways in which the gravity model can be used in high school geography classes. Based on Newton's Law of Molecular Gravitation, the law states that gravitation is in direct ratio to mass and inverse ratio to distance. One activity for students involves determination of zones of influence of cities of various sizes. (Author/AV)

  7. An Exemplary High School Literary Magazine: "Cinnabar."

    Science.gov (United States)

    Holbrook, Hilary Taylor, Comp.

    One of a series of 20 literary magazine profiles written to help faculty advisors wishing to start or improve their publication, this profile provides information on staffing and production of "Cinnabar," the magazine published by Ward Melville High School, Setauket, New York. The introduction describes the literary magazine contest (and…

  8. Grandfather Tang Goes to High School

    Science.gov (United States)

    Johnson, Iris DeLoach

    2006-01-01

    This article describes how the children's literature book, Grandfather Tang's Story, which is commonly used in the elementary grades, may be used at the high school level to engage students in an exploration of area and perimeter which includes basic operations with square roots, ordering numbers (decimal approximations, and their exact…

  9. High School Peer Helping: A Program Evaluation.

    Science.gov (United States)

    Kilgariff, Lisa; Solomon, Mindy; Zanotti, Mary; Chambliss, Catherine

    Peer helpers can act as liaisons to high school guidance departments by identifying problems, making appropriate referrals, and encouraging others to obtain professional help if necessary. An active program can help ensure that in the future students are better prepared to handle conflicts that arise within marriage, career, and family. This study…

  10. Choosing High School Courses with Purpose

    Science.gov (United States)

    Ayotte, Steve; Sevier, Sharon

    2010-01-01

    In choosing high school courses, students often seem to focus on everything except preparation for an intended major or career. They consider graduation requirements, weighted classes, easy classes...but rarely are these types of choices preparing students for postsecondary education. This article describes the "Career Companion Guide"…

  11. Neoliberalism inside Two American High Schools

    Science.gov (United States)

    Cleary, Joseph, Jr.

    2017-01-01

    This article examines "neoliberalism" inside two American public high schools. The work of one leading critical theorist, Mark Olssen, is explained and examined. Particular attention is paid to Olssen's concepts of "homo economicus" and "manipulatable man." It is concluded that Olssen's theories on neoliberalism…

  12. Nematodes: Model Organisms in High School Biology

    Science.gov (United States)

    Bliss, TJ; Anderson, Margery; Dillman, Adler; Yourick, Debra; Jett, Marti; Adams, Byron J.; Russell, RevaBeth

    2007-01-01

    In a collaborative effort between university researchers and high school science teachers, an inquiry-based laboratory module was designed using two species of insecticidal nematodes to help students apply scientific inquiry and elements of thoughtful experimental design. The learning experience and model are described in this article. (Contains 4…

  13. Using Creative Group Techniques in High Schools

    Science.gov (United States)

    Veach, Laura J.; Gladding, Samuel T.

    2007-01-01

    Groups in high schools that use creative techniques help adolescents express their emotions appropriately, behave differently, and gain insight into themselves and others. This article looks at seven different creative arts media--music, movement, visual art, literature, drama, play, and humor--and offers examples of how they can be used in groups…

  14. AAPT/NSTA High School Physics Examination.

    Science.gov (United States)

    Nelson, James

    1983-01-01

    Discusses development of the American Association of Physics Teachers and National Science Teachers Association (AAPT/NSTA) high school physics examination. Includes sample examination questions and distribution of topics: mechanics (30 percent), waves/optics/sound (20 percent), heat/kinetic theory (10 percent), electricity/magnetism (25 percent),…

  15. San Diego's High School Dropout Crisis

    Science.gov (United States)

    Wilson, James C.

    2012-01-01

    This article highlights San Diego's dropout problem and how much it's costing the city and the state. Most San Diegans do not realize the enormous impact high school dropouts on their city. The California Dropout Research Project, located at the University of California at Santa Barbara, has estimated the lifetime cost of one class or cohort of…

  16. Discrete mathematics in the high school curriculum

    NARCIS (Netherlands)

    Anderson, I.; Asch, van A.G.; van Lint, J.H.

    2004-01-01

    In this paper we present some topics from the field of discrete mathematics which might be suitable for the high school curriculum. These topics yield both easy to understand challenging problems and important applications of discrete mathematics. We choose elements from number theory and various

  17. Socialism in High School Social Studies Textbooks

    Science.gov (United States)

    Neumann, Richard

    2012-01-01

    This article concerns textbook analysis regarding the presentation of socialism in four leading high school social studies books, one in each of the following subjects: United States history, world history, United States government, and economics. Findings indicate that students relying on these texts to gain understanding of socialism and…

  18. Outline of High School Credit Courses.

    Science.gov (United States)

    South Carolina State Dept. of Education, Columbia.

    An outline is presented of the objectives and content of courses offered for credit in high schools in South Carolina. Courses in the following subjects are described: (1) art; (2) drama; (3) driver education; (4) environmental education; (5) foreign language: French, German, Russian, Spanish; (6) health; (7) language arts; (8) mathematics; (9)…

  19. High School Dropout and Teen Childbearing

    Science.gov (United States)

    Marcotte, Dave E.

    2013-01-01

    Understanding the relationship between high school dropout and teen childbearing is complicated because both are affected by a variety of difficult to control factors. In this paper, I use panel data on aggregate dropout and fertility rates by age for all fifty states to develop insight by instrumenting for dropout using information on state…

  20. Like a Rock: Far Rockaway High School

    Science.gov (United States)

    Whelan, Debra Lau

    2007-01-01

    Students from Far Rockaway High School are just back from spring break, and media specialist Geri Ellner is busy getting ready for her first class. She's already pulled out a copy of Anthony Browne's award-winning picture book "The Shape Game" (Farrar, 2003), and now she's patiently cuing up a Disney video of "Pocahontas" on…

  1. High School Womens' Studies: A Working Model

    Science.gov (United States)

    Adler, Iris

    1976-01-01

    Discusses several difficulties in bringing the womens' movement into the high schools, noting a strong resistance to feminism by the students themselves. The authors course began with discussions on what it meant to be a girl, daughter, and female student; focused on women and the media; examined women in other cultures; and finally discussed…

  2. Seasonal variations in VO2max, O2-cost, O2-deficit, and performance in elite cross-country skiers.

    Science.gov (United States)

    Losnegard, Thomas; Myklebust, Håvard; Spencer, Matt; Hallén, Jostein

    2013-07-01

    Long-term effects of training are important information for athletes, coaches, and scientists when associating changes in physiological indices with changes in performance. Therefore, this study monitored changes in aerobic and anaerobic capacities and performance in a group of elite cross-country skiers during a full sport season. Thirteen men (age, 23 ± 2 years; height, 182 ± 6 cm; body mass, 76 ± 8 kg; V2 roller ski skating VO2max, 79.3 ± 4.4 ml·kg·min or 6.0 ± 0.5 L·min) were tested during the early, middle, and late preparation phase: June (T1), August (T2), and October (T3); during the competition phase: January/February (T4); and after early precompetition phase: June (T5). O2-cost during submaximal efforts, V[Combining Dot Above]O2peak, accumulated oxygen deficit (ΣO2-deficit), and performance during a 1,000-m test were determined in the V2 ski skating technique on a roller ski treadmill. Subjects performed their training on an individual basis, and detailed training logs were categorized into different intensity zones and exercise modes. Total training volume was highest during the summer months (early preseason) and decreased toward and through the winter season, whereas the volume of high-intensity training increased (all p size; ES = 0.63-1.37, moderate to large, all p country skiers induced no significant changes in V[Combining Dot Above]O2peak but improved performance, O2-cost, and ΣO2-deficit.

  3. Self-Esteem of Junior High and High School Students.

    Science.gov (United States)

    Lee, Kimberly E.

    The purpose of this thesis was to investigate the self-esteem of junior high and high school students. The independent variables investigated were quality of family life, birth order, family size, maternal employment, grade level and family structure. The dependent variables were the self-esteem scores from the following sub-scales of the Texas…

  4. A systematic assessment of the current capacity to act in nutrition in West Africa: cross-country similarities and differences

    Directory of Open Access Journals (Sweden)

    Roger Sodjinou

    2014-07-01

    Full Text Available Background: Although it is widely accepted that lack of capacity is one of the barriers to scaling up nutrition in West Africa, there is a paucity of information about what capacities exist and the capacities that need to be developed to accelerate progress toward improved nutrition outcomes in the region. Objective: To systematically assess the current capacity to act in nutrition in the West Africa region and explore cross-country similarities and differences. Design: Data were collected from 13 West African countries through interviews with government officials, key development partners, tertiary-level training institutions, and health professional schools. The assessment was based on a conceptual framework of four interdependent levels (tools; skills; staff and infrastructure; and structures, systems and roles. In each of the surveyed countries, we assessed capacity assets and gaps at individual, organizational, and systemic levels. Results: Important similarities and differences in capacity assets and gaps emerged across all the surveyed countries. There was strong momentum to improve nutrition in nearly all the surveyed countries. Most of the countries had a set of policies on nutrition in place and had set up multisectoral, multi-stakeholder platforms to coordinate nutrition activities, although much remained to be done to improve the effectiveness of these platforms. Many initiatives aimed to reduce undernutrition were ongoing in the region, but there did not seem to be clear coordination between them. Insufficient financial resources to implement nutrition activities were a major problem in all countries. The bulk of financial allocations for nutrition was provided by development partners, even though some countries, such as Niger, Nigeria, and Senegal, had a national budget line for nutrition. Sporadic stock-outs of nutrition supplies were reported in most of the countries as a result of a weak logistic and supply chain system. They

  5. Building a Virtual High School...Click by Click

    Science.gov (United States)

    Podoll, Sue; Randle, Darcy

    2005-01-01

    The Rapid City Academy is the alternative high school program for South Dakota's Rapid City Area Schools, which has an enrollment of about 13,000 K-12 students, with five middle schools feeding two large traditional high schools and the alternative program. A high percentage of students at the academy are considered "at-risk" due to…

  6. Continuing Care in High Schools: A Descriptive Study of Recovery High School Programs

    Science.gov (United States)

    Finch, Andrew J.; Moberg, D. Paul; Krupp, Amanda Lawton

    2014-01-01

    Data from 17 recovery high schools suggest programs are dynamic and vary in enrollment, fiscal stability, governance, staffing, and organizational structure. Schools struggle with enrollment, funding, lack of primary treatment accessibility, academic rigor, and institutional support. Still, for adolescents having received treatment for substance…

  7. Reduction of Social Inequality in High School

    DEFF Research Database (Denmark)

    Jensen, Ulla Højmark

    2014-01-01

    This article explores structures in the learning environment at the classroom level that can contribute to reduction of social inequality in education. It draws on qualitative observation studies of Latino’s in high schools in New York City, USA, by a Danish researcher. The purpose of this article...... is to explore ‘good examples’ from an outsider’s perspective and there by create an empirical and theoretical focus on how school characteristics and structures cross boarders are connected to the reduction of social inequality in education....

  8. Harmfulness of smoking among high school students

    Directory of Open Access Journals (Sweden)

    Iwona Rotter

    2013-03-01

    Full Text Available Introduction: The aim of the study was to assess the level of awareness of smoking and non smoking students on harmful impact of nicotine and cigarette smoke on human body. Material and methods: The study was carried out in March 2011 in high schools in Szczecin. Own elaborated questionnaire was used. 288 students from high school, technical college and vocational school were tested. Results: The majority of responders (95,1% claimed that cigarette smoke is harmful both for passive and active smokers. They most often pinpoint the direct cause connected with smoking to pulmonary diseases (264 persons and cancers (240 persons. Almost 90% of students found negative impact of tobacco products on development of fetus of pregnant women. Overwhelming majority of respondents (83,2% feels anxious if it comes to stay in a room filled with smoke. Conclusions: The awareness of high school students on negative influence of smoking on human body is quite satisfactory, but there is still a need for more education in the range of diseases and symptoms connected with smoking.

  9. Astrobiology in an Urban New York City High School: John Dewey High School's Space Science Academy

    Science.gov (United States)

    Fried, B.; Dash, H. B.

    2010-04-01

    John Dewey High School's participation in NASA's MESDT and DLN projects and other partnerships provide opportunities for our diverse population, focusing particular attention to under-represented and under-served groups in the field of Space Science.

  10. The Effect of High School Shootings on Schools and Student Performance

    Science.gov (United States)

    Beland, Louis-Philippe; Kim, Dongwoo

    2016-01-01

    We analyze how fatal shootings in high schools affect schools and students using data from shooting databases, school report cards, and the Common Core of Data. We examine schools' test scores, enrollment, number of teachers, graduation, attendance, and suspension rates at schools that experienced a shooting, employing a difference-in-differences…

  11. The Effect of High School Shootings on Schools and Student Performance

    OpenAIRE

    Louis-Philippe Beland; Dongwoo Kim

    2015-01-01

    We analyze how fatal shootings in high schools affect schools and students using data from shooting databases, school report cards, and the Common Core of Data. We examine schools’ test scores, enrollment, and number of teachers, as well as graduation, attendance, and suspension rates at schools that experienced a shooting, employing a difference-in-differences strategy that uses other high schools in the same district as the comparison group. Our findings suggest that homicidal shootings s...

  12. Transformational Leadership and Teacher Motivation in Southwestern Arizona High Schools

    Science.gov (United States)

    Reynolds, Catherine L.

    2009-01-01

    The purpose of this study was to explore the relationship between transformational leadership and teacher motivation in Southwestern Arizona high schools. Teachers in a school district in Southwestern Arizona comprised of high schools were surveyed using two instruments, Leithwood and Jantzi's (1998) The Leadership and Management of Schools in…

  13. James Madison High: A School at the Crossroads

    Science.gov (United States)

    Stroup, John T.; Salmonowicz, Michael J.; Broom, Christopher C.

    2007-01-01

    This case tells the story of James Madison High School, which became the epicenter of a debate over the future reorganization and control of large secondary schools in the Los Angeles Unified School District (LAUSD). The LAUSD, recently taken over by the newly elected mayor, was fighting for control of this 3,000-student high school with a charter…

  14. Prediction of performance in Vasaloppet through long lasting ski- ergometer and rollerski tests in cross-country skiers

    DEFF Research Database (Denmark)

    Mygind, Erik; Wulff, Kristian; Jensen, Mads Rosenkilde

    2015-01-01

    -ergometer and Rollerski field tests correlate strongly with performance in Vasaloppet and therefore might be useful test tools for recreational skiers who wish to participate in long lasting c-c competitions. Keywords: Cross-country ski training, Upper body, Exercise intensity, Field test, Body composition blood lactate......The main purpose was to investigate if long lasting cross-country (c-c) test procedures could predict performance time in ‘Vasaloppet’ and secondly the effect of a 16 weeks training period on a 90 min double poling performance test. 24 moderate trained c-c skiers participated in the study...... and completed Vasaloppet. All skiers carried out pre and post training tests in a 90 minutes ski-ergometer double poling test and a 120 minutes rollerski field test on a closed paved circuit. 19 skiers provided detailed training logs that could sufficiently establish their training preparation for Vasaloppet...

  15. Sleep disorders among high school students in New Zealand

    OpenAIRE

    Fernando AT; Samaranayake CB; Blank CJ; Roberts G; Arroll B

    2013-01-01

    INTRODUCTION: Adolescents are known to have high risk factors for sleep disorders, yet the youth rates of sleep disturbances are unknown. AIM: This study aimed to determine the prevalence of sleep disorders among New Zealand high school students. METHODS: The Auckland Sleep Questionnaire (ASQ) was administered to high school students at six schools in the North Island. Schools were chosen to reflect a range of ethnicities and school deciles, which identify the socioeconomic status of househol...

  16. The High School student’s journey:

    DEFF Research Database (Denmark)

    Gholamian, Jamshid

    The aim of this paper is to examine the construction of self and other in counseling conversations between students with an ethnic minority background and counselors in 3 high schools in Copenhagen, Denmark. The analysis is based on Russian philosopher Mikhail Bakhtin’s literary theory of Chronot......The aim of this paper is to examine the construction of self and other in counseling conversations between students with an ethnic minority background and counselors in 3 high schools in Copenhagen, Denmark. The analysis is based on Russian philosopher Mikhail Bakhtin’s literary theory...... of Chronotope. I see the concept as useful in connection with students' self-constructions (autobiographies). The analysis shows how time and space plays into the counseling conversations, and how other contexts and dialogues play a stronger role in the students design of themselves; that is, how a fusion...

  17. Implementing US GDP in Chained Prices for Cross-country GDP Growth and Sectoral Comparisons: Application to Selected ASEAN Countries

    OpenAIRE

    Dumagan, Jesus C.

    2008-01-01

    GDP in constant prices of ASEAN countries suffers from substitution bias by ignoring relative price changes and makes GDP growth and shares dependent on the base year. These analytical deficiencies led the US since the mid-1990s to convert GDP from constant to chained prices. Thus, cross-country comparisons in constant prices are analytically shaky even with the same base year. Therefore, this paper implements US GDP in chained prices in Indonesia, Malaysia, Philippines, and Thailand to allev...

  18. Assessment of ventilatory thresholds from heart rate variability in five incremental treadmill tests in cross country skiers

    OpenAIRE

    Mendia Iztueta, Ibai

    2014-01-01

    Incremental treadmill tests are widely used in the field of exercise physiology for the assessment of Ventilatory Thresholds for clinical and sport oriented issues. The assessment of Ventilatory Thresholds (VTs) from Heart Rate Variability (HRV) is a relatively new approach with increasing popularity because it is a non-invasive and economical method. Nevertheless, this has not been used in Cross Country (XC) Skiing, an endurance sport where the knowledge of VTs holds special importance. The ...

  19. Performance of European cross-country oil pipelines. Statistical summary of reported spillages in 2006 and since 1971

    International Nuclear Information System (INIS)

    Larive, J.F.

    2008-08-01

    Since 1971 CONCAWE has been collecting data on spillages from cross-country oil pipelines in Europe. The information is collated in an annual report which includes an analysis of the human and environmental consequences and of the underlying causes of such incidents. CONCAWE report 7/08 covers the results for the year 2006 and includes an analysis of the accumulated data for the whole 36-year period from 1971 to 2006

  20. Analysis of classical time-trial performance and technique-specific physiological determinants in elite female cross-country skiers

    Directory of Open Access Journals (Sweden)

    Øyvind Sandbakk

    2016-08-01

    Full Text Available The present study investigated the contribution of performance on uphill, flat, and downhill sections to overall performance in an international 10-km classical time-trial in elite female cross-country skiers, as well as the relationships between performance on snow and laboratory-measured physiological variables in the double poling (DP and diagonal (DIA techniques. Ten elite female cross-country skiers were continuously measured by a global positioning system device during an international 10-km cross-country skiing time-trial in the classical technique. One month prior to the race, all skiers performed a 5-min submaximal and 3-min self-paced performance test while roller skiing on a treadmill, both in the DP and DIA techniques. The time spent on uphill (r=0.98 and flat (r=0.91 sections of the race correlated most strongly with the overall 10-km performance (both p<0.05. Approximately 56% of the racing time was spent uphill, and stepwise multiple regression revealed that uphill time explained 95.5% of the variance in overall performance (p<0.001. Distance covered during the 3-min roller-skiing test and body-mass normalized peak oxygen uptake (VO2peak in both techniques showed the strongest correlations with overall time-trial performance (r=0.66-0.78, with DP capacity tending to have greatest impact on the flat and DIA capacity on uphill terrain (all p<0.05. Our present findings reveal that the time spent uphill most strongly determine classical time-trial performance, and that the major portion of the performance differences among elite female cross-country skiers can be explained by variations in technique-specific aerobic power.

  1. Performance of European cross-country oil pipelines. Statistical summary of reported spillages in 2006 and since 1971

    Energy Technology Data Exchange (ETDEWEB)

    Larive, J.F. [CONCAWE, Brussels (Belgium)

    2008-08-15

    Since 1971 CONCAWE has been collecting data on spillages from cross-country oil pipelines in Europe. The information is collated in an annual report which includes an analysis of the human and environmental consequences and of the underlying causes of such incidents. CONCAWE report 7/08 covers the results for the year 2006 and includes an analysis of the accumulated data for the whole 36-year period from 1971 to 2006.

  2. Premenstrual syndrome (PMS among high school students

    Directory of Open Access Journals (Sweden)

    Buddhabunyakan N

    2017-07-01

    Full Text Available Nattapong Buddhabunyakan, Srinaree Kaewrudee, Chompilas Chongsomchai, Sukree Soontrapa, Woraluk Somboonporn, Jen Sothornwit Department of Obstetrics and Gynaecology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand Background: Premenstrual syndrome (PMS is a common health problem among adolescents.Objective: To assess the prevalence of PMS in Thai high school students.Materials and methods: This was a prospective study conducted among menstruating high school students in Khon Kaen, Thailand, from September to December, 2015. Participants were asked to prospectively complete an anonymous questionnaire, which included information about demographic data, menstrual patterns, and symptoms to be recorded on a daily calendar of premenstrual experiences according to the diagnostic criteria proposed by the American College of Obstetricians and Gynecologists. All of the data were prospectively recorded for 90 consecutive days.Results: Of the 399 participants, 289 (72.4% completed the self-report questionnaire. Eighty-six participants (29.8%; 95% CI, 24.5%–35.4% reported having PMS. The most common somatic and affective symptoms among participants with PMS were breast tenderness (74.4% and angry outbursts (97.7%. There were significant differences between the PMS and non-PMS groups, and PMS was associated with various problems related to educational activities, including lack of concentration and motivation, poor individual work performance, poor collaborative work performance, and low scores. However, there were no significant differences regarding interpersonal relationships between the PMS and non-PMS groups.Conclusions: PMS is a common menstrual disorder among Thai high school students. The most common symptoms reported in this study were angry outbursts and breast tenderness. Keywords: premenstrual symptoms, prevalence, association, high school students

  3. Factors Associated with Absenteeism in High Schools

    OpenAIRE

    DEMIR, Kamile; AKMAN KARABEYOGLU, Yasemin

    2016-01-01

    Problem Statement: There are many factors that affect student achievement directly and indirectly at the secondary educational level. Lower attendance rates have been cited as detrimental to academic achievement; therefore, it is suggested that improved attendance is a direct indicator, rather than determinant of students’ academic achievement.Purpose of Study: The main purpose of this study was to investigate the effect of individual, family and school variables on absenteeism among high sch...

  4. Citizenship Engagement: Responses from High School Students

    OpenAIRE

    Martin, Leisa A.

    2017-01-01

    In the United States, the main mission of social studies education is to prepare students for citizenship. With this in mind, the following study examined 191 high school students’ views on how they demonstrated citizenship. Traditionally with this age group, personally responsible citizenship has been a common form of self-reported citizenship engagement. However, in this study, the students seemed to conceptualize citizenship differently. With the Akwesasne Mohawk students, the European Ame...

  5. At-risk high school seniors: Science remediation for Georgia's High School Graduation Test

    Science.gov (United States)

    Carroll, Carolyn M.

    State departments of education have created a system of accountability for the academic achievement of students under the mandate of the No Child Left Behind Act of 2001. The Georgia Department of Education established the Georgia High School Graduation Test (GHSGT) as their method of evaluating the academic achievement of high school students. The GHSGT consist of five sections and students must pass all five sections before students they are eligible to receive a diploma. The purpose of the study was to examine the effects of teacher-lead and computer based remediation for a group of high school seniors who have been unsuccessful in passing the science portion of the GHSGT. The objectives of this study include (a) Identify the most effective method of remediation for at-risk students on the science section of the GHSGT, and (b) evaluate the methods of remediation for at-risk students on the science section of GHSGT available to high school students. The participants of this study were at-risk seniors enrolled in one high school during the 2007-2008 school year. The findings of this research study indicated that at-risk students who participated in both types of remediation, teacher-led and computer-based, scored significantly higher than the computer-based remediation group alone. There was no significant relationship between the test scores and the number of times the students were tested.

  6. Biomechanical comparison of the double-push technique and the conventional skate skiing technique in cross-country sprint skiing.

    Science.gov (United States)

    Stöggl, Thomas; Müller, Erich; Lindinger, Stefan

    2008-09-01

    The aims of the study were to: (1) adapt the "double-push" technique from inline skating to cross-country skiing; (2) compare this new skiing technique with the conventional skate skiing cross-country technique; and (3) test the hypothesis that the double-push technique improves skiing speed in a short sprint. 13 elite skiers performed maximum-speed sprints over 100 m using the double-push skate skiing technique and using the conventional "V2" skate skiing technique. Pole and plantar forces, knee angle, cycle characteristics, and electromyography of nine lower body muscles were analysed. We found that the double-push technique could be successfully transferred to cross-country skiing, and that this new technique is faster than the conventional skate skiing technique. The double-push technique was 2.9 +/- 2.2% faster (P push technique had a longer cycle length and a lower cycle rate, and it was characterized by higher muscle activity, higher knee extension amplitudes and velocities, and higher peak foot forces, especially in the first phase of the push-off. Also, the foot was more loaded laterally in the double-push technique than in the conventional skate skiing technique.

  7. A simulation of cross-country skiing on varying terrain by using a mathematical power balance model.

    Science.gov (United States)

    Moxnes, John F; Sandbakk, Oyvind; Hausken, Kjell

    2013-01-01

    The current study simulated cross-country skiing on varying terrain by using a power balance model. By applying the hypothetical inductive deductive method, we compared the simulated position along the track with actual skiing on snow, and calculated the theoretical effect of friction and air drag on skiing performance. As input values in the model, air drag and friction were estimated from the literature, whereas the model included relationships between heart rate, metabolic rate, and work rate based on the treadmill roller-ski testing of an elite cross-country skier. We verified this procedure by testing four models of metabolic rate against experimental data on the treadmill. The experimental data corresponded well with the simulations, with the best fit when work rate was increased on uphill and decreased on downhill terrain. The simulations predicted that skiing time increases by 3%-4% when either friction or air drag increases by 10%. In conclusion, the power balance model was found to be a useful tool for predicting how various factors influence racing performance in cross-country skiing.

  8. Analysis of high school students’ environmental literacy

    Science.gov (United States)

    Wardani, R. A. K.; Karyanto, P.; Ramli, M.

    2018-05-01

    The student’s environmental literacy (EL) is a vital component to improve the awareness of student on environmental issues. This research aims to measure and analyse the EL of high school students, and how the topic of environment has been taught in high school. The research was conducted in February to April 2017. The EL was measured on three aspects, i.e. knowledge, attitude and concern. The participants were sixty-five (21 boys, 44 girls) purposively selected from students of grade X, XI and XII of one Senior High School in Karanganyar Regency, Indonesia. The knowledge of students on concepts of environmental issues was tested by fourteen main questions followed by supported questions. The result showed that 80% of students were classified as inadequate category. The attitude of students was measured by New Ecological Paradigm (NEP) consisted of fifteen items, and students’ average score was 46.42 (medium). The concern was measured by fifteen statements about environment, and it was ranged from 2.58 to 4.18. EL of students may low due to students’ lack understanding of the environment concepts, the limited theories and concepts transferred to students, inappropriate lesson plan to meet the EL components.

  9. Forensic Science Curriculum for High School Students

    Science.gov (United States)

    Burgess, Christiana J.

    Over the last several decades, forensic science---the application of science to civil and criminal legal matters---has become of increasing popularity with the public. The range of disciplines within the field is immense, offering individuals the potential for a unique career, regardless of their specific interests or expertise. In response to this growth, many organizations, both public and private, have recognized the need to create forensic science programs that strive to maintain and enhance the quality of forensic science education. Unfortunately, most of the emphasis placed on developing these materials relates to post-secondary education, and creates a significant lack of forensic science educational materials available in the U.S., especially in Oklahoma. The purpose of this project was to create a high school curriculum that provides the foundation for building a broad, yet comprehensive, overview of the field of forensic science and its associated disciplines. The overall goal was to create and provide course materials to high school teachers in order to increase their knowledge of forensic science such that they are able to teach its disciplines effectively and with accuracy. The Forensic Science Curriculum for High School Students includes sample lesson plans, PowerPoint presentations, and lab activities with step-by-step instructions.

  10. Case Studies of Leading Edge Small Urban High Schools. Relevance Strategic Designs: 6. Perspectives Charter School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  11. Graduation Rates in South Carolina Public High Schools: The Effect of School Size and Socioeconomic Status

    Science.gov (United States)

    Rivers, Thomas E., Jr.

    2012-01-01

    This study included a comparison of the graduation rates among high schools in South Carolina closely analyzing school size and socioeconomic status. The purpose for the study was to answer two questions: What patterns and relationships exist between school size and graduation rates at high schools in South Carolina? What patterns and…

  12. Relations between Popularity and Prosocial Behavior in Middle School and High School Chinese Adolescents

    Science.gov (United States)

    Lu, Ting; Li, Ling; Niu, Li; Jin, Shenghua; French, Doran C.

    2018-01-01

    The concurrent and longitudinal associations between popularity, likeability, and prosocial behavior were evaluated in this three-year study of middle school and high school Chinese adolescents. The initial sample included 766 middle school (mean age = 13.3 years) and 668 high school participants (mean age = 16.6 years); there were 880 (399 girls)…

  13. Creating a Comprehensive School Reform Model: The Talent Development High School with Career Academies.

    Science.gov (United States)

    Jordan, Will J.; McPartland, James M.; Legters, Nettie E.; Balfanz, Robert

    2000-01-01

    Discusses the need for comprehensive reforms in school organization, curriculum and instruction, and professional development to address the problems of large urban high schools. Describes the Talent Development High School with Career Academies model being developed to meet the needs of such schools. (SLD)

  14. High Pressure Reform: Examining Urban Schools' Response to Multiple School Choice Policies

    Science.gov (United States)

    Holme, Jennifer Jellison; Carkhum, Rian; Rangel, Virginia Snodgrass

    2013-01-01

    Over the past several decades, policymakers have sought to address the problem of school failure by exposing traditional public schools to competitive market forces. In this analysis, we examine how two traditional public schools in a "high pressure/high choice" urban school cluster in Texas responded to a number of overlapping choice…

  15. Case Studies of Leading Edge Small Urban High Schools. Personalization Strategic Designs: 9. MetWest High School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  16. Case Studies of Leading Edge Small Urban High Schools. Core Academic Strategic Designs: 2. Noble Street Charter High School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  17. Merits of Undergraduate and High School Research

    Science.gov (United States)

    Kenney, John

    2016-06-01

    When it comes to sports, everyone gets it; you have to play to really understand, experience, and learn what the game is all about. It would be ludicrous to teach basketball by practicing basketball fundamentals in the gym (layups, free throws, jump shots, dribbling, defense), reading about and attending professional basketball games, but never playing in a game. As important as classes and teaching laboratories may be in science education, there is simply no substitute for active engagement in scientific research to show students what science is all about and, perhaps even more importantly, to inspire and motivate them to become scientists or at least appreciate science. It is a widely held misconception that a student cannot really do meaningful, publishable scientific research until he/she is in graduate school. In actual fact, college undergraduates and even high school students can make original and significant scientific research contributions. Astronomical research, in particular, is very well suited to engage the beginning high school or college undergraduate researcher. The night sky’s inherent accessibility and also its inherent grandeur are natural draws for the curious student’s mind. And much can be learned and discovered using small telescopes. In sports, joining a team is a key aspect of the sports experience. Similarly in science, joining a research team and thereby entering a “community of scientific practice” is fundamental and transformational. As important as working with equipment and acquiring data happen to be in scientific research, this is only the beginning of the research process. Student researchers of all ages—particularly high school students and college undergraduates—have much to gain by giving presentations on their research, writing up their results for publication, and going through the peer review process. But this only works if the student researchers are imbedded within the community of practice.

  18. High School Physics Courses & Enrollments: Results from the 2012-13 Nationwide Survey of High School Physics Teachers. Focus On

    Science.gov (United States)

    White, Susan; Tesfaye, Casey Langer

    2014-01-01

    This report examines enrollments in high school physics during the 2012-13 school year. Based on data from the most recent survey (which includes both public and private high schools in the U.S.), it is estimated that 39% of the class of 2013 took high school physics before graduating. During the 2012-13 school year, 1.38 million students were…

  19. HIGH SCHOOL STUDENTS’ VIEWS ON BLENDED LEARNING

    Directory of Open Access Journals (Sweden)

    Ibrahim Umit YAPICI,

    2012-08-01

    Full Text Available In this study, it is aimed to determine the high school students’ views on blended learning. The study was carried out in biology course for the lesson unit of “Classification of Living Things and Biodiversity” with 47 9th grade students attending Nevzat Ayaz Anatolian High School in the second term of the academic year of 2009-2010. The lessons were taught in a way appropriate to the blended learning model both via the Internet and on face-to-face basis. As the online dimension of the blended learning model, Moodle, a Learning Management System (LMS, was used. The application lasted 10 weeks. The scale of learners’ views on blended learning was applied and interviews were held to determine the views. As a result of the analysis of the scale, it was seen that their views were “highly” positive. The interviews held with the students revealed that the blended learning model provided students with various opportunities such as getting prepared for the lessons, reviewing the lessons as many times as wanted, reaching the subject-related materials without being dependent on time and place, testing oneself and communicating with the teacher and other students out of the school. The interviews also revealed that there were various problems though such as lack of Internet connection at home and problems experienced while playing the videos.

  20. Energy Design Guidelines for High Performance Schools: Tropical Island Climates

    Energy Technology Data Exchange (ETDEWEB)

    2004-11-01

    The Energy Design Guidelines for High Performance Schools--Tropical Island Climates provides school boards, administrators, and design staff with guidance to help them make informed decisions about energy and environmental issues important to school systems and communities. These design guidelines outline high performance principles for the new or retrofit design of your K-12 school in tropical island climates. By incorporating energy improvements into their construction or renovation plans, schools can significantly reduce energy consumption and costs.

  1. The Treatment of Wealth Distribution by High School Economics Textbooks

    Science.gov (United States)

    Neumann, Richard

    2014-01-01

    This article presents findings from an investigation of the treatment of wealth distribution by high school economics textbooks. The eight leading high school economics texts in the United States were examined.

  2. Determinants of a simulated cross-country skiing sprint competition using V2 skating technique on roller skis.

    Science.gov (United States)

    Mikkola, Jussi; Laaksonen, Marko; Holmberg, Hans-Christer; Vesterinen, Ville; Nummela, Ari

    2010-04-01

    The present study investigated the performance-predicting factors of a simulated cross-country (XC) skiing sprint competition on roller skis, on a slow surface. Sixteen elite male XC skiers performed a simulated sprint competition (4 x 850 m heat with a 20-minute recovery) using V2 skating technique on an indoor tartan track. Heat velocities, oxygen consumption, and peak lactate were measured during or after the heats. Maximal skiing velocity was measured by performing a 30-m speed test. Explosive and maximal force production in the upper body was determined by bench press (BP). Subjects also performed maximal anaerobic skiing test (MAST) and the 2 x 2-km double poling (DP) test. The maximal velocity of MAST (VMAST) and velocities at 3 (V3), 5 (V5), 7 (V7) mmol.L lactate levels in MAST were determined. In the 2 x 2-km test, DP economy (VO2SUBDP) and maximal 2-km DP velocity (VDP2KM) were determined. The best single performance-predicting factors for the sprint performance were VDP2KM (r = 0.73, p < 0.01), V7 (r = 0.70, p < 0.01), and VO2SUBDP (r = -0.70, p < 0.01). Faster skiers in sprint simulation had a higher absolute VO2 (L.min) (p < 0.05-0.01) during sprint heats, and higher anaerobic skiing power (VMAST, p < 0.05) and better anaerobic skiing economy (V3, V5, V7, p < 0.05-0.001) than slower skiers. Faster skiers were also stronger in BP, with regard to both absolute (p < 0.01) and relative (p < 0.05) values. In addition, anaerobic characteristics seem to be of importance at the beginning of the XC skiing sprint competition, whereas the aerobic characteristics become more important as the XC skiing sprint competition progressed. This study indicates that sprint skiers should emphasize sport-specific upper body training, and training skiing economy at high speeds.

  3. Success Despite Socioeconomics: A Case Study of a High-Achieving, High-Poverty School

    Science.gov (United States)

    Tilley, Thomas Brent; Smith, Samuel J.; Claxton, Russell L.

    2012-01-01

    This case study of a high-achieving, high-poverty school describes the school's leadership, culture, and programs that contributed to its success. Data were collected from two surveys (the School Culture Survey and the Vanderbilt Assessment of Leadership in Education), observations at the school site, and interviews with school personnel. The…

  4. Blended Learning and Student Engagement in an Urban High School

    Science.gov (United States)

    Johnson, Courtney

    2017-01-01

    A metropolitan school district wanted to understand blended learning as it existed in one of their high schools. Blended learning had been school-wide for four years, and district administrators wanted to know how students, teachers, and school administrators perceived blended learning and its impact on student engagement. This was a…

  5. Humanizing the High School: The Power of Peers.

    Science.gov (United States)

    Stader, David L.; Gagnepain, F. J.

    2000-01-01

    Discusses what high schools can do to improve student relationships, highlighting a St. Louis area school's efforts to develop peer-mentoring and peer-mediation programs. Offers guidelines to help other schools develop a school culture that promotes caring, teaches constructive conflict resolution, and reduces potential for violence. (MLH)

  6. Gay Youth in American Public High Schools: Invisible Diversity.

    Science.gov (United States)

    Reed, Donald B.

    Gay youth enter high school with the knowledge that they are different and with the belief that heterosexuality is normal and that homosexuality is not normal. Also, gay youth enter high school with the belief that honesty and integrity are important personal values. Additionally, the gay youth enter high school without family knowledge of their…

  7. TOCUSO: Test of Conceptual Understanding on High School Optics Topics

    Science.gov (United States)

    Akarsu, Bayram

    2012-01-01

    Physics educators around the world often need reliable diagnostic materials to measure students' understanding of physics concept in high school. The purpose of this study is to evaluate a new diagnostic tool on High School Optics concept. Test of Conceptual Understanding on High School Optics (TOCUSO) consists of 25 conceptual items that measures…

  8. Parental Engagement Strategies in Greek and Nigerian Preschool Settings: Cross-Country Comparison

    Science.gov (United States)

    Rentzou, Konstantina; Ekine, Adefunke

    2017-01-01

    Acknowledging the fact that parental engagement is more beneficial during early childhood compared to other developmental stages many countries have institutionalised parental engagement. In Nigeria, the government has taken initiatives in order to involve parents in their child's development by encouraging the establishment of School Management…

  9. The Availability and Utilization of School Library Resources in Some Selected Secondary Schools (High School) in Rivers State

    Science.gov (United States)

    Owate, C. N.; Iroha, Okpa

    2013-01-01

    This study investigates the availability and utilization of school library resources by Secondary School (High School) Students. Eight Selected Secondary Schools in Rivers State, Nigeria were chosen based on their performance in external examinations and geographic locations. In carrying out the research, questionnaires were administered to both…

  10. School Variables as Mediators of Personal and Family Factors on School Violence in Taiwanese Junior High Schools

    Science.gov (United States)

    Chen, Ji-Kang; Astor, Ron Avi

    2012-01-01

    Using a nationally representative sample of 3,058 junior high school students in Taiwan, this study examines a model of how personal traits, family factors, and school dynamics influence school violence committed by students against students and teachers. This model proposed that school violence is directly influenced by personal traits,…

  11. The physical activity climate in Minnesota middle and high schools.

    Science.gov (United States)

    Samuelson, Anne; Lytle, Leslie; Pasch, Keryn; Farbakhsh, Kian; Moe, Stacey; Sirard, John Ronald

    2010-11-01

    This article describes policies, practices, and facilities that form the physical activity climate in Minneapolis/St. Paul, Minnesota metro area middle and high schools and examines how the physical activity climate varies by school characteristics, including public/private, school location and grade level. Surveys examining school physical activity practices, policies and environment were administered to principals and physical education department heads from 115 middle and high schools participating in the Transdisciplinary Research on Energetics and Cancer-Identifying Determinants of Eating and Activity (TREC-IDEA) study. While some supportive practices were highly prevalent in the schools studied (such as prohibiting substitution of other classes for physical education); other practices were less common (such as providing opportunity for intramural (noncompetitive) sports). Public schools vs. private schools and schools with a larger school enrollment were more likely to have a school climate supportive of physical activity. Although schools reported elements of positive physical activity climates, discrepancies exist by school characteristics. Of note, public schools were more than twice as likely as private schools to have supportive physical activity environments. Establishing more consistent physical activity expectations and funding at the state and national level is necessary to increase regular school physical activity.

  12. European School of High-Energy Physics

    CERN Document Server

    2006-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures notes on field theory and the Standard Model, quantum chromodynamics, flavour physics and CP violation, experimental aspects of CP violation in K and B decays, relativistic heavy-ion physics, and the scientific programme of the Joint Institute for Nuclear Research. These core scientific topics are complemented by a lecture about the physics of ski jumping.

  13. Facebook and socializing among high school students

    OpenAIRE

    Kordić, Boris; Babić, Lepa

    2011-01-01

    Facebook is currently the most popular friend-networking site in the world. The concept of friends on social networking site does not coincide with the notion of friends in real life. Nevertheless, Facebook is a social network that is based on real friends with the possibility of accepting strangers. In a study on a sample of 150 pupils from High School of Economics, we found that all have a profile on Facebook, the majority spends two hours a day on Facebook and has over a hundred Facebook f...

  14. Predicting Parental Home and School Involvement in High School African American Adolescents

    Science.gov (United States)

    Hayes, DeMarquis

    2011-01-01

    Predictors of parental home and school involvement for high school adolescents were examined within two groups of urban African American parents from various socioeconomic levels. Home involvement was defined as parent-adolescent communication about school and learning, while school involvement was defined in terms of parent attendance and…

  15. School District Wellness Policy Quality and Weight-Related Outcomes among High School Students in Minnesota

    Science.gov (United States)

    Hoffman, Pamela K.; Davey, Cynthia S.; Larson, Nicole; Grannon, Katherine Y.; Hanson, Carlie; Nanney, Marilyn S.

    2016-01-01

    Weight-related outcomes were examined among high school students in Minnesota public school districts according to the quality of district wellness policies. Wellness policy strength and comprehensiveness were scored using the Wellness School Assessment Tool (WellSAT) for 325 Minnesota public school districts in 2013. The associations between…

  16. The Educational Benefits of Attending Higher Performing Schools: Evidence from Chicago High Schools

    Science.gov (United States)

    Allensworth, Elaine M.; Moore, Paul T.; Sartain, Lauren; de la Torre, Marisa

    2017-01-01

    Policymakers are implementing reforms with the assumption that students do better when attending high-achieving schools. In this article, we use longitudinal data from Chicago Public Schools to test that assumption. We find that the effects of attending a higher performing school depend on the school's performance level. At elite public schools…

  17. Total Quality Management (TQM) Practices and School Climate amongst High, Average and Low Performance Secondary Schools

    Science.gov (United States)

    Ismail, Siti Noor

    2014-01-01

    Purpose: This study attempted to determine whether the dimensions of TQM practices are predictors of school climate. It aimed to identify the level of TQM practices and school climate in three different categories of schools, namely high, average and low performance schools. The study also sought to examine which dimensions of TQM practices…

  18. Bullying Victimization and Student Engagement in Elementary, Middle, and High Schools: Moderating Role of School Climate

    Science.gov (United States)

    Yang, Chunyan; Sharkey, Jill D.; Reed, Lauren A.; Chen, Chun; Dowdy, Erin

    2018-01-01

    Bullying is the most common form of school violence and is associated with a range of negative outcomes, including traumatic responses. This study used hierarchical linear modeling to examine the multilevel moderating effects of school climate and school level (i.e., elementary, middle, and high schools) on the association between bullying…

  19. Effects of Part-Time Work on School Achievement During High School

    Science.gov (United States)

    Singh, Kusum; Chang, Mido; Dika, Sandra

    2007-01-01

    The authors explored the effects of part-time work on school achievement during high school. To estimate the true effects of part-time work on school grades, the authors included family background, students' educational aspirations, and school engagement as controls. Although a substantial literature exists on the relationship of part-time work…

  20. High School Graduation Rates:Alternative Methods and Implications

    OpenAIRE

    Jing Miao; Walt Haney

    2004-01-01

    The No Child Left Behind Act has brought great attention to the high school graduation rate as one of the mandatory accountability measures for public school systems. However, there is no consensus on how to calculate the high school graduation rate given the lack of longitudinal databases that track individual students. This study reviews literature on and practices in reporting high school graduation rates, compares graduation rate estimates yielded from alternative methods, and estimates d...

  1. The Relationships among the Fine Arts, School Culture, and High School Graduation Rates in Georgia

    Science.gov (United States)

    Lovett, Andrew, Jr.

    2014-01-01

    High school graduation is the single largest hurdle that students must achieve to prepare for college and career (National Governor's Association, 2011). Fleischman & Heppen (2009) agree that American high schools must address the problem of declining graduation rate. Approximately 1.28 million students drop out of high school annually (Amos,…

  2. Shopping Problems among High School Students

    Science.gov (United States)

    Grant, Jon E.; Potenza, Marc N.; Krishnan-Sarin, Suchitra; Cavallo, Dana A.; Desai, Rani A.

    2010-01-01

    Background Although shopping behavior among adolescents is normal, for some the shopping becomes problematic. An assessment of adolescent shopping behavior along a continuum of severity and its relationship to other behaviors and health issues is incompletely understood. Methods A large sample of high school students (n=3999) was examined using a self-report survey with 153 questions concerning demographic characteristics, shopping behaviors, other health behaviors including substance use, and functioning variables such as grades and violent behavior. Results The overall prevalence of problem shopping was 3.5% (95%CI: 2.93–4.07). Regular smoking, marijuana and other drug use, sadness and hopelessness, and antisocial behaviors (e.g., fighting, carrying weapons) were associated with problem shopping behavior in both boys and girls. Heavy alcohol use was significantly associated with problem shopping only in girls. Conclusion Problem shopping appears fairly common among high school students and is associated with symptoms of depression and a range of potentially addictive and antisocial behaviors. Significant distress and diminished behavioral control suggest that excessive shopping may often have significant associated morbidity. Additional research is needed to develop specific prevention and treatment strategies for adolescents who report problems with shopping. PMID:21497217

  3. Shopping problems among high school students.

    Science.gov (United States)

    Grant, Jon E; Potenza, Marc N; Krishnan-Sarin, Suchitra; Cavallo, Dana A; Desai, Rani A

    2011-01-01

    Although shopping behavior among adolescents is normal, for some, the shopping becomes problematic. An assessment of adolescent shopping behavior along a continuum of severity and its relationship to other behaviors and health issues is incompletely understood. A large sample of high school students (n = 3999) was examined using a self-report survey with 153 questions concerning demographic characteristics, shopping behaviors, other health behaviors including substance use, and functioning variables such as grades and violent behavior. The overall prevalence of problem shopping was 3.5% (95% CI, 2.93-4.07). Regular smoking, marijuana and other drug use, sadness and hopelessness, and antisocial behaviors (e.g., fighting, carrying weapons) were associated with problem shopping behavior in both boys and girls. Heavy alcohol use was significantly associated with problem shopping only in girls. Problem shopping appears fairly common among high school students and is associated with symptoms of depression and a range of potentially addictive and antisocial behaviors. Significant distress and diminished behavioral control suggest that excessive shopping may often have significant associated morbidity. Additional research is needed to develop specific prevention and treatment strategies for adolescents who report problems with shopping. Copyright © 2011 Elsevier Inc. All rights reserved.

  4. Contextualising case studies in entrepreneurship: A tandem approach to conducting a longitudinal cross-country case study

    DEFF Research Database (Denmark)

    Chetty, S. K.; Partanen, J.; Rasmussen, Erik Stavnsager

    2014-01-01

    Using predictive and effectuation logics as a framework, this research note explains how case study research was conducted to demonstrate rigour and relevance. The study involves a longitudinal cross-country case study on small and medium-sized firm growth and networks undertaken by research teams...... in three countries (Finland, Denmark and New Zealand) involving 33 firms. This research note outlines the implications of this research and provides valuable guidance and reflections upon opportunities for future research regarding the conduct of contextual studies in entrepreneurship without compromising...

  5. The School Absenteeism among High School Students: Contributing Factors

    Science.gov (United States)

    Balkis, Murat; Arslan, Gökmen; Duru, Erdinç

    2016-01-01

    The aim of this study was to examine the direct and indirect relationship between student school absenteeism, personal factors (academic self- perception, attitudes towards teacher and school, goal valuation and motivation/ self-regulation), family factors (parents' educational level and income), and academic achievement in structural equation…

  6. Case Study: North Laurel High School, London, Kentucky.

    Science.gov (United States)

    Southern Regional Education Board, Atlanta, GA.

    When North Laurel High School, London, Kentucky, opened in Fall 1992, students and teachers entered a new facility and a new era of commitment to excellence for all students. In Spring 1993, North Laurel joined the Southern Regional Education Board's High Schools That Work initiative. The new school replaced the general track and raised graduation…

  7. Attitudes of Turkish High School Students toward Mathematics

    Science.gov (United States)

    Yenilmez, Kursat

    2007-01-01

    This study examines high school students' attitudes toward mathematics and analyzes whether there were differences in attitude and its source that could be attributed to gender, class level, type of school, mathematics success, whether the students received preschool education, families' income level, and high school student's place of living.…

  8. A Workshop for High School Students on Naive Set Theory

    Science.gov (United States)

    Wegner, Sven-Ake

    2014-01-01

    In this article we present the prototype of a workshop on naive set theory designed for high school students in or around the seventh year of primary education. Our concept is based on two events which the author organized in 2006 and 2010 for students of elementary school and high school, respectively. The article also includes a practice report…

  9. Examining the Internet Addiction Levels of High School Senior Students

    Science.gov (United States)

    Aydemir, Hasan

    2018-01-01

    In the present study, the internet addiction status of high school senior students in Yesilyurt county of Malatya was analyzed and examined in terms of gender variable. The study population consisted of 3442 senior students who were studying at 37 high schools in state schools in Yesilyurt County of the city of Malatya in 2016-2017 academic year.…

  10. Mental skills of South African male high school rugby players ...

    African Journals Online (AJOL)

    The aim of this study was to establish preliminary South African high school rugby norms for the BMSQ. The sample consisted of 152 male high school rugby players from two schools in the Ethekwini region. Preliminary norms are presented in the form of means and standard deviations. Results are compared with those of ...

  11. Aggressive Students and High School Dropout: An Event History Analysis

    Science.gov (United States)

    Orozco, Steven R.

    2016-01-01

    Aggressive students often struggle in multiple domains of their school functioning and are at increased risk for high school dropout. Research has identified a variety of warning flags which are strong predictors of high school dropout. While it is known that aggressive students exhibit many of these warning flags, there is little research which…

  12. The High School Dropout Problem: Perspectives of Teachers and Principals

    Science.gov (United States)

    Bridgeland, John M.; Dilulio, John J., Jr.; Balfanz, Robert

    2009-01-01

    To better understand the views of teachers and administrators on the high school dropout problem, focus groups and nationally representative surveys were conducted of high school teachers and principals. A focus group of superintendents and school board members was also included. To help interpret the results, the authors convened a colloquium…

  13. "Higher Expectations" in the Catholic Inner City High School.

    Science.gov (United States)

    Harkins, William

    1987-01-01

    Considers the implications of statistics on death and poverty in minority communities for Catholic high schools with large minority populations. Sees hope at the heart of the Catholic high school. Discusses how teachers, school climate, and careful curriculum design can help instill this hope in the students. (DMM)

  14. Sexuality Education in Junior High Schools in Japan

    Science.gov (United States)

    Hashimoto, N.; Shinohara, H.; Tashiro, M.; Suzuki, S.; Hirose, H.; Ikeya, H.; Ushitora, K.; Komiya, A.; Watanabe, M.; Motegi, T.; Morioka, M.

    2012-01-01

    This paper aims to determine via responses to three questionnaire surveys how sexuality education programs are conducted at junior high schools in Japan. Study 1 examined the practice of sexuality education in schools, Study 2 investigated junior high school students' (age 12-13 and 14-15 years) knowledge of sexuality, and Study 3 examined…

  15. The Characteristics of High School Department Chairs: A National Perspective

    Science.gov (United States)

    DeAngelis, Karen J.

    2013-01-01

    Department chairs occupy a potentially important leadership position in high schools, yet little is known about them, particularly with regard to who they are and how they compare to other high school teachers. This is surprising given growing expectations for distributed leadership practice in schools. In this study, I utilize a national dataset…

  16. Middle School Teachers and School Leadership Perceptions of School Culture: An Examination of the Transition from Junior Highs to Middle Schools

    Science.gov (United States)

    Chaney, Maura Chase

    2013-01-01

    The purpose of this case study was to examine the transition from junior high school to a middle school as experienced in two middle schools from a mid-sized urban school district located in the Rocky Mountains. The overarching question that guided data collection for this study centered on the factors that influenced school culture before,…

  17. High School Physics Availability: Results from the 2012-13 Nationwide Survey of High School Physics Teachers. Focus On

    Science.gov (United States)

    White, Susan; Tesfaye, Casey Langer

    2014-01-01

    In this report, the authors share their analysis of the data from over 3,500 high schools in the U.S. beginning with an examination of the availability of physics in U.S. high schools. The schools in their sample are a nationally-representative random sample of the almost 25,000 high schools in forty-nine of the fifty states. Table 1 shows the…

  18. Energy Design Guidelines for High Performance Schools: Tropical Island Climates

    Energy Technology Data Exchange (ETDEWEB)

    None

    2004-11-01

    Design guidelines outline high performance principles for the new or retrofit design of K-12 schools in tropical island climates. By incorporating energy improvements into construction or renovation plans, schools can reduce energy consumption and costs.

  19. prevalence of substance use among rural high school students

    African Journals Online (AJOL)

    Administrator

    School of Public Health, University of the Limpopo. Sovenga, South Africa ... KEY WORDS: substance use, rural high school students, South Africa ... increased into the 1990s, these behaviours ..... Canada's Mental Health Supplement, 68,. 12.

  20. Astronomy Education Project for Guangdong High Schools F. P. Pi ...

    Indian Academy of Sciences (India)

    School of Physics and Electronic Engineering, Guangzhou University, ... an astronomy education project for high school teachers and students was initiated ... ipality, universities and research institutes, professional and amateur astronomical.

  1. Predicting High School Completion Using Student Performance in High School Algebra: A Mixed Methods Research Study

    Science.gov (United States)

    Chiado, Wendy S.

    2012-01-01

    Too many of our nation's youth have failed to complete high school. Determining why so many of our nation's students fail to graduate is a complex, multi-faceted problem and beyond the scope of any one study. The study presented herein utilized a thirteen-step mixed methods model developed by Leech and Onwuegbuzie (2007) to demonstrate within a…

  2. Conceptual problem solving in high school physics

    Science.gov (United States)

    Docktor, Jennifer L.; Strand, Natalie E.; Mestre, José P.; Ross, Brian H.

    2015-12-01

    Problem solving is a critical element of learning physics. However, traditional instruction often emphasizes the quantitative aspects of problem solving such as equations and mathematical procedures rather than qualitative analysis for selecting appropriate concepts and principles. This study describes the development and evaluation of an instructional approach called Conceptual Problem Solving (CPS) which guides students to identify principles, justify their use, and plan their solution in writing before solving a problem. The CPS approach was implemented by high school physics teachers at three schools for major theorems and conservation laws in mechanics and CPS-taught classes were compared to control classes taught using traditional problem solving methods. Information about the teachers' implementation of the approach was gathered from classroom observations and interviews, and the effectiveness of the approach was evaluated from a series of written assessments. Results indicated that teachers found CPS easy to integrate into their curricula, students engaged in classroom discussions and produced problem solutions of a higher quality than before, and students scored higher on conceptual and problem solving measures.

  3. Breakfast Composition in Junior High School Students

    Directory of Open Access Journals (Sweden)

    Sheila Devi

    2015-12-01

    Full Text Available Background: Adolescence is a time of rapid development that requires higher nutrient intake levels than in adulthood. However the habit of skipping breakfast has become very popular among adolescents. Skipping breakfast has negative effects such as difficulty in concentrating, growth impairment and decrease academic performance. Therefore, this study was conducted to identify the breakfast composisition of early adolescents in Jatinangor, Sumedang, Indonesia. Methods: A cross sectional study with non-probability sampling method, was conducted in a junior high school Jatinangor during the month of July 2013. Ninety six participants were included in this study. All the participants underwent an interview about the food intake for breakfast in seven days using eating pattern recall guidelines. Results: Overall, 37% of the respondents skipped breakfast. The mean of total calories among the adolescents who consumed breakfast was 286.06 (187.89 kcal. The amount of carbohydrate, fat and protein consumed was 29.23 (19.93 gram, 13.93 (13.29 gram and 8.78 (6.11 gram accordingly. The main reason for adolescent to skip breakfast was lack of time. Conclusions: Majority of the respondents have their breakfast before they go to school. Overall, the total calories comsumed is sufficient however the amount of protein consumed is low.

  4. Conceptual problem solving in high school physics

    Directory of Open Access Journals (Sweden)

    Jennifer L. Docktor

    2015-09-01

    Full Text Available Problem solving is a critical element of learning physics. However, traditional instruction often emphasizes the quantitative aspects of problem solving such as equations and mathematical procedures rather than qualitative analysis for selecting appropriate concepts and principles. This study describes the development and evaluation of an instructional approach called Conceptual Problem Solving (CPS which guides students to identify principles, justify their use, and plan their solution in writing before solving a problem. The CPS approach was implemented by high school physics teachers at three schools for major theorems and conservation laws in mechanics and CPS-taught classes were compared to control classes taught using traditional problem solving methods. Information about the teachers’ implementation of the approach was gathered from classroom observations and interviews, and the effectiveness of the approach was evaluated from a series of written assessments. Results indicated that teachers found CPS easy to integrate into their curricula, students engaged in classroom discussions and produced problem solutions of a higher quality than before, and students scored higher on conceptual and problem solving measures.

  5. Heads Up to High School Sports

    Science.gov (United States)

    ... submit" value="Submit" /> HEADS UP to School Sports Recommend on Facebook Tweet Share Compartir To help ... organizations, developed the HEADS UP: Concussion in School Sports initiative and materials. Specific Concussion Information for... Coaches ...

  6. Adolescent Views of Time Management: Rethinking the School Day in Junior High School

    Science.gov (United States)

    Strom, Paris S.; Strom, Robert D.; Sindel-Arrington, Tricia

    2016-01-01

    Junior high school presents a significant increase in time demands both for study and for social relationships. The students (N = 240) in grades 7 and 8 at a junior high school anonymously completed online the Time Management Poll concerning their own use of time and the way their school managed time. The 20 items in the poll allowed them to…

  7. A Positive Model for Reducing and Preventing School Burnout in High School Students

    Science.gov (United States)

    Aypay, Ayse

    2017-01-01

    This study aims to develop and test the validity of a model limited to attitude towards the future and subjective well-being for reducing and preventing the school burnout that high school students can experience. The study is designed as a relational screening model conducted over 389 high school students. The data in this study are analyzed…

  8. Effects of High School Students' Perceptions of School Life Quality on Their Academic Motivation Levels

    Science.gov (United States)

    Akin Kösterelioglu, Meltem; Kösterelioglu, Ilker

    2015-01-01

    This study aims to identify the effects of high school students' perceptions of school life quality on their academic motivation levels. The study was conducted on a sample of high school students (n = 2371) in Amasya Province in the fall semester of 2013-2014 academic year. Study sample was selected with the help of cluster sampling method. Data…

  9. A Study of Democratic School Culture Perceptions of Sport High School Students

    Science.gov (United States)

    Isikgöz, Enes

    2016-01-01

    In this study; the perceptions of the students studying at sport high schools about democratic school culture were analysed in accordance with different variables. Participants of the research consisted of 216 students studying at Sport High Schools in Sakarya and Batman Provinces of Turkey. The data were collected with the Democratic School…

  10. School-Related Variables in the Dimensions of Anger in High School Students in Turkey

    Science.gov (United States)

    Siyez, Digdem M.

    2018-01-01

    The study aimed to examine the effects of perceived social support from teachers, expectation of academic achievement, school control, and gender on anger dimensions in high school students in Izmir, Turkey. In total, 446 high school students (234 girls, 212 boys) participated in the study. Pearson's correlation and multiple regression analyses…

  11. School Reform in a High Poverty Elementary School: A Grounded Theory Case Study of Capacity Building

    Science.gov (United States)

    Dodman, Stephanie Lynn

    2011-01-01

    There is a persistent and significant gap in the achievement of students who attend high-poverty schools and those who attend low-poverty schools. Students in high-poverty schools, the majority of whom are African American and Hispanic, are not achieving the same levels of academic success as their low-poverty or White counterparts. Retention…

  12. School-Based Drug Abuse Prevention Programs in High School Students

    Science.gov (United States)

    Sharma, Manoj; Branscum, Paul

    2013-01-01

    Drug abuse, or substance abuse, is a substantial public health problem in the United States, particularly among high school students. The purpose of this article was to review school-based programs implemented in high schools for substance abuse prevention and to suggest recommendations for future interventions. Included were English language…

  13. Investigating the Link between Home-School Dissonance and Academic Cheating among High School Students

    Science.gov (United States)

    Brown-Wright, Lynda; Tyler, Kenneth M.; Stevens-Watkins, Danelle; Thomas, Deneia; Mulder, Shambra; Hughes, Travonia; Stevens-Morgan, Ruby; Roan-Belle, Clarissa; Gadson, Nadia; Smith, La Toya

    2013-01-01

    The current study examined the association between home-school dissonance and academic cheating among 344 high school juniors and seniors at two urban high schools. Students completed two subscales of the Patterns of Adaptive Learning Scale (PALS) and one subscale of the Academic Motivation Scale (AMS). Analyses revealed that home-school…

  14. Health behaviors of Bydgoszcz high school graduates

    Directory of Open Access Journals (Sweden)

    Alicja Kostencka

    2016-10-01

    Full Text Available Lifestyle affects the physical, mental, social development, health and learning ability. It seems that there are differences in the health behaviors  of young females and males, however these differences are not well described. The aim of the current study was to assess the lifestyle of eighteen-years old and to compare their health behaviors of young persons according to their gender. The study was conducted among 98 students of high schools in Bydgoszcz (35 females and 68 males. All participants were 18 years old. The questionnaire was prepared especially for the purposes of the study, a part of the questions of this questionnaire was taken from the Canada Fitness Survey. The physical activity, mode of nutrition, use of stimulants, hours of sleep, time spent in front of screens and the level of stress were taken into consideration while assessing the teenagers’ lifestyle. The lifestyle of high school graduates is worrisome. It is characterized by low level of physical activity, irregular nutrition, not enough fruits, vegetables and water consumed. A large group of young people drink alcohol, smoke tobacco and marijuana, sleep too short. Males also spend too many hours in front of a television, computer or other similar device. Differences in the health behaviors of  women and men appear to be significant. The prevalence of alcohol abuse in this group is very high and affects both sexes. The sex differences in the health-promoting behaviors among men and women in this group of adolescents seems to diminish. Observed unhealthy behaviors indicates the urgent need for health education, especially those that educate the student about the value of the person, the value of health, and the development of social skills that underlie personal development. The foremost priority is  risk prevention implementation in primary schools. Further research and continuous monitoring of health behaviors in different age groups  is needed as well as  to

  15. The Question of Queue: Implications for -Best Practice- in Cross-country Transport of Commercial Spent Nuclear Fuel

    International Nuclear Information System (INIS)

    Williams, J.M.

    2009-01-01

    The 'Standard Contract' authorized by the Nuclear Waste Policy Act of 1982 (Section 302(a)) provides that priority for acceptance of spent nuclear fuel (SNF) shall be based on the date of its discharge from civilian nuclear reactors. Through 2007, about 2,100 discharges of about 58,000 metric tons have created a priority ranking (or 'queue') for US DOE spent fuel acceptance and transport. Since 1982, consideration of the task of large-scale, cross-country SNF transport (by the National Academies and others) has led to several recommendations for 'best practice' in such an unprecedented campaign. Many of these recommendations, however, are inconsistent with the acceptance priority established by the Standard Contract, and in fact cannot be implemented under its provisions. This paper considers the SNF acceptance rankings established by the Standard Contract, and the barrier these place on best practice cross-country transport of the nation's inventory of SNF. Using a series of case studies, the paper explores the challenge of best practice transport from selected shipment origins under current arrangements. The case studies support preliminary conclusions regarding the inconsistency between best practice SNF transport and the Standard Contract acceptance queue, with reference to particular origins sites and their utility owners. The paper concludes with a suggestion for resolving the inconsistencies, and recommended next steps in the inquiry. (authors)

  16. The impact of uphill cycling and bicycle suspension on downhill performance during cross-country mountain biking.

    Science.gov (United States)

    Macdermid, Paul W; Fink, Philip W; Miller, Matthew C; Stannard, Stephen

    2017-07-01

    Non-propulsive work demand has been linked to reduced energetic economy of cross-country mountain biking. The purpose of this study was to determine mechanical, physiological and performance differences and observe economy while riding a downhill section of a cross-country course prior to and following the metabolic "load" of a climb at race pace under two conditions (hardtail and full suspension) expected to alter vibration damping mechanics. Participants completed 1 lap of the track incorporating the same downhill section twice, under two conditions (hardtail and full suspension). Performance was determined by time to complete overall lap and specific terrain sections. Power, cadence, heart rate and oxygen consumption were sampled and logged every second while triaxial accelerometers recorded accelerations (128 Hz) to quantify vibration. No differences between performance times (P = 0.65) or power outputs (P = 0.61) were observed while physiological demand of loaded downhill riding was significantly greater (P  0.05) measures. This study showed minimal advantage of a full suspension bike in our trial, with further investigations over a full race distance warranted.

  17. Expert model for the evaluation of potential competition performance in cross-country skiers exemplified by two evaluated athletes

    Directory of Open Access Journals (Sweden)

    J Pustovrh

    2008-09-01

    Full Text Available The objective of the present research was to obtain information on potential competition performance in cross-country skiers by the method of expert modelling. On the basis of expert knowledge, a model of potential performance (MFMPS was constructed in the form of a decision tree, encompassing motor, functional, morphological, psychological, and sociological subspaces. For all base variables, normalisers were determined, and for all nodes in the MFMPS model, decision rules were determined according to the method applying dependent determination of weights. Potential competition performance of the sample of 14 subjects measured – cross-country skiers in the age of 17 and 18 years was assessed at all levels in the MFMPS model by means of the SMMS program. At the highest levels of the MFMPS model, the correlation between the scores of the variables and the criterion variable SLO_FIS was established by means of the Pearson correlation coefficient. The validity of the MFMPS model  by means of which 81% of the variance of the criterion variable was explained – was established. The model laid out in this way allows us to search for current weak and good points in the preparation status of an athlete, on which the direction and correction of the transformation process is based. In this way, objective longitudinal monitoring of the development of the athlete's potential is also ensured.

  18. Quantification of brake data acquired with a brake power meter during simulated cross-country mountain bike racing.

    Science.gov (United States)

    Miller, Matthew C; Fink, Philip W; Macdermid, Paul W; Stannard, Stephen R

    2018-01-17

    There is currently a dearth of information describing cycling performance outside of propulsive and physiological variables. The aim of the present study was to utilise a brake power meter to quantify braking during a multi-lap cross-country mountain bike time trial and to determine how braking affects performance. A significant negative association was determined between lap time and brake power (800.8 ± 216.4 W, mean ± SD; r = -0.446; p  0.05) which was attributed to decreased brake work (p < 0.05) and brake time (p < 0.05) in both the front and rear brakes by the final lap. A multiple regression model incorporating braking and propulsion was able to explain more of the variance in lap time (r 2  = 0.935) than propulsion alone (r 2  = 0.826). The present study highlights that riders' braking contributes to mountain bike performance. As riders repeat a cross-country mountain bike track, they are able to change braking, which in turn can counterbalance a reduction in power output. Further research is required to understand braking better.

  19. An Approach to Energy Education for High School, Junior High School and Elementary School Students at Aichi Institute of Technology

    Science.gov (United States)

    Yukita, Kazuto; Ichiyanagi, Katsuhiro; Mori, Tsuyoshi; Goto, Yasuyuki

    This paper discusses the methods of implementation and improvement adopted in the energy education program of “Marugoto Taiken World” (“Total Experience World”) at Aichi Institute of Technology. The program, which is aimed at high school, junior high school and elementary school students, has been carried on at Aichi Institute of Technology for a number of years now, and the authors have been involved in the energy education project for the past four years. During that time, the following four courses have been held : 1) Let's use wind power to generate electricity, 2) Let's use flowers to build a solar battery, 3) Let's use bottles to build a fuel cell battery, 4) Let's make all sorts of batteries.

  20. Response strategies in an international strategic alliance experimental context: Cross-countries differences

    NARCIS (Netherlands)

    Tjemkes, B.V.; Furrer, O.; Adolfs, K.; Ulgen Aydinlik, A.

    2012-01-01

    International strategic alliances have grown increasingly popular in recent decades, yet their failure rate is extremely high. Poor management of adverse situations contributes significantly to such high failure rates. Moreover, the international environments in which international strategic

  1. Associations of Teen Dating Violence Victimization With School Violence and Bullying Among US High School Students*

    Science.gov (United States)

    Vivolo-Kantor, Alana M.; Olsen, Emily O’malley; Bacon, Sarah

    2016-01-01

    BACKGROUND Teen dating violence (TDV) negatively impacts health, mental and physical well-being, and school performance. METHODS Data from a nationally representative sample of high school students participating in the Centers for Disease Control and Prevention (CDC)’s 2013 Youth Risk Behavior Survey (YRBS) are used to demonstrate associations of physical and sexual TDV with school violence-related experiences and behaviors, including bullying victimization. Bivariate and adjusted sex-stratified regressions assessed relationships between TDV and school violence-related experiences and behaviors. RESULTS Compared to students not reporting TDV, those experiencing both physical and sexual TDV were more likely to report carrying a weapon at school, missing school because they felt unsafe, being threatened or injured with a weapon on school property, having a physical fight at school, and being bullied on school property. CONCLUSIONS School-based prevention efforts should target multiple forms of violence. PMID:27374352

  2. Virtual Learning Simulations in High School

    DEFF Research Database (Denmark)

    Thisgaard, Malene Warming; Makransky, Guido

    2017-01-01

    The present study compared the value of using a virtual learning simulation compared to traditional lessons on the topic of evolution, and investigated if the virtual learning simulation could serve as a catalyst for STEM academic and career development, based on social cognitive career theory....... The investigation was conducted using a crossover repeated measures design based on a sample of 128 high school biology/biotech students. The results showed that the virtual learning simulation increased knowledge of evolution significantly, compared to the traditional lesson. No significant differences between...... the simulation and lesson were found in their ability to increase the non-cognitive measures. Both interventions increased self-efficacy significantly, and none of them had a significant effect on motivation. In addition, the results showed that the simulation increased interest in biology related tasks...

  3. Norwegian High-School Students Internship Programme

    CERN Multimedia

    2017-01-01

    The High-School Students Internship Programme (HSSIP is a programme developed by the ECO group’s Teacher and Student Programmes section to engage students from a young age with scientific research and innovation. Norway was selected as one out of five countries for the pilot programmes run in 2017. Out of some 150 applications, 10 boys and 14 girls, from Longyearbyen (Svalbard) in the North to Flekkefjord in the South, were invited to participate in the Norwegian programme that took place from 15 October - 28 October. The youngsters were offered an intense two-week internship at CERN, during which they took part in many diverse activities. Accompanied by mentors, the students got a deeper insight into how CERN supports particle physics by working on their own projects and through a variety of visits.

  4. Lifelines for High School Climate Change Education

    Science.gov (United States)

    Gould, A. D.

    2012-12-01

    The Lifelines project aims to establish a network of practicing high school teachers actively using climate change curricula by creating professional learning communities (PLCs) of teachers who, through remote meetings and workshops, maintain ongoing communication and sharing of best practices among colleagues to strengthen knowledge and promote effective teaching strategies. The project explores techniques to achieve the most effective teleconferencing meetings and workshops. This promotes not only teaching about minimizing environmental impacts of human activity, but minimizes environmental impacts of professional development — practicing what we preach. To date, Lifelines PLCs have set up websites and e-mail lists for sharing information. Teleconferences and webinars have been held using services such as Skype, ReadyTalk, and Wiggio. Many of the meetings have been recorded and archived for the benefit of members who could not attend in real-time.

  5. School for Young High Energy Physicists

    CERN Document Server

    Evans, M E

    2003-01-01

    Forty-seven experimental particle physicists attended the 2002 Summer School, held, as usual, at The Cosener's House in Abingdon during September. The weather was glorious allowing a number of tutorials and impromptu seminars to take place in the lovely gardens. The lectures were of a high standard and were delivered and received enthusiastically, providing material for lively discussions in tutorials and elsewhere. The students each gave a ten-minute seminar and the general quality of the talks was impressive and the time keeping excellent. The activities described ranged from front-line physics analysis to preparations for the next generation of machines and detectors, and gave a clear indication of the breadth of particle physics activities in the UK

  6. [Frequency of use of school cafeterias in middle and high schools in 3 French districts].

    Science.gov (United States)

    Michaud, C; Feur, E; Gerbouin-Rérolle, P; Leynaud-Rouaud, C; Chateil, S; Gourdon, M

    2000-09-01

    Reports from the French Ministry of Education warn of a decrease in the use of school food services, especially in sensitive urban areas. They also suggest that this decline has led to cases of malnutrition. This article describes the characteristics of the current supply of school meals and measures the evolution of demand observed between 1992 and 1996 in relation to the economic situation of students' families. The study was carried out in 3 departments in France: Doubs, Herault, and Val de Marne. The administrators of all public and private middle and high schools in the 3 departments received a questionnaire asking them to describe the services offered in their cafeterias and to provide the corresponding statistical and accounting data. External food services near the schools were also taken into account. Seventy-nine percent of schools responded to the survey. Concerning the services offered, 91% of schools have their own cafeterias, of which 81% are managed by the schools. Concerning the evolution of utilisation, a significant decrease in the number of meals served in seen in middle schools. On the other hand, high schools have observed stable utilisation. The positive changes in utilisation are linked, in middle schools, to characteristics of the schools' internal food services (self-service, choice of main courses, modulation of seats). In high schools, positive changes in the utilisation of school services are linked to the lack of external food services near the schools. As middle schools and high schools control the logistics and management of food services offered to students, they are potentially in a position to influence a policy on this issue. The evolution in utilisation is very different among departments and between middle and high schools. While economic precariousness has a negative structural effect on utilisation, it doesn't seem to be a major factor in the evolution of the decrease observed over the past few years.

  7. Strategic Designs: Lessons from Leading Edge Small Urban High Schools

    Science.gov (United States)

    Shields, Regis Anne; Miles, Karen Hawley

    2008-01-01

    Education Resource Strategies (ERS) works with school and district leaders to help them more strategically use resources--people, time, and money--to improve student performance. They have found that many school districts begin creating small high schools without a clear sense of how much they will spend or how to ensure that small schools…

  8. High School Harvest: Combining Food Service Training and Institutional Procurement

    Science.gov (United States)

    Conner, David; Estrin, Hans; Becot, Florence

    2014-01-01

    This article discusses High School Harvest (HSH), an Extension educator-led project in five Vermont schools to provide students with job training and food system education and to provide lightly processed produce to school lunch programs. One hundred and twenty-one students participated, logging 8,752 hours growing, harvesting, and processing…

  9. Inclusive STEM High Schools Increase Opportunities for Underrepresented Students

    Science.gov (United States)

    Spillane, Nancy K.; Lynch, Sharon J.; Ford, Michael R.

    2016-01-01

    The authors report on a study of eight inclusive STEM high schools that are designed to increase the numbers of students in demographic groups underrepresented in STEM. As STEM schools, they have had broader and deeper STEM coursework (taken by all students) than required by their respective states and school districts; they also had outcome…

  10. Homeless High School Students in America: Who Counts?

    Science.gov (United States)

    Cumming, John M.; Gloeckner, Gene W.

    2012-01-01

    After interviewing homeless high school students, the research team in a Colorado school district discovered that many students had not revealed their true living conditions (homelessness) to anyone in the school district. This research team developed an anonymous survey written around the homeless categories identified in the McKinney-Vento…

  11. Comal County, Texas: Preparing for Life after High School

    Science.gov (United States)

    Walter, Frank

    2018-01-01

    Comal County, Texas, may be rural but its students face many of the same challenges as students in urban districts. Communities In Schools of South Central Texas works with the local school district to identify student needs and provide critical supports to help young people prepare for life after high school.

  12. High School Students' Perceptions of Narrative Evaluations as Summative Assessment

    Science.gov (United States)

    Bagley, Sylvia S.

    2008-01-01

    This study focuses on data collected at "Progressive Secondary School" in Southern California, a high school which uses narrative evaluations and other forms of alternative summative assessment on a school wide basis. Through a survey and personal interviews, students were asked to describe what they liked most and least about the use of…

  13. Teacher Performance Trajectories in High- and Lower-Poverty Schools

    Science.gov (United States)

    Xu, Zeyu; Özek, Umut; Hansen, Michael

    2015-01-01

    This study explores whether teacher performance trajectory over time differs by school-poverty settings. Focusing on elementary school mathematics teachers in North Carolina and Florida, we find no systematic relationship between school student poverty rates and teacher performance trajectories. In both high- (=60% free/reduced-price lunch [FRPL])…

  14. The anthropometric match between high school learners and ...

    African Journals Online (AJOL)

    Background: A South African study illustrated that the school computer chair was the least ergonomic aspect of a school computer workstation and this may explain why computer usage was the only predictor of cervical pain among high school students (Smith et al. 2007). An alarming percentage of South African learners ...

  15. San Diego Met High School: Personalization as a Foundation

    Science.gov (United States)

    Principal Leadership, 2010

    2010-01-01

    The mission of San Diego Met High School is to prepare students for college and the workforce through active learning, academic rigor, and community involvement in a small school setting. Because personalization is a key component of the school culture, advisories of 20-25 students work with the same teachers for all four years. Advisers, parents,…

  16. Plate Waste and Attitudes among High School Lunch Program Participants

    Science.gov (United States)

    Haas, Jessica; Cunningham-Sabo, Leslie; Auld, Garry

    2014-01-01

    Purpose/Objectives: The purpose of this study was to determine: (1) What foods high school students participating in the National School Lunch Program (NSLP) are discarding the most? (2) How much of these foods they are discarding? and (3) What are their perceptions towards school lunch? Methods: Researchers measured plate waste at two high…

  17. Listening to the Voices of Civically Engaged High School Students

    Science.gov (United States)

    Preus, Betty; Payne, Rachel; Wick, Carly; Glomski, Emily

    2016-01-01

    This study examines why a group of students representing two high schools became involved in an activist organization, the benefits they gained as a result, the impact they had on their school and community, and their recommendations for how school personnel can foster civic engagement in young people. The student-led group campaigned for a school…

  18. On the High School Education of a Pithecanthropus Erectus

    Science.gov (United States)

    Steel, Sean

    2014-01-01

    This article examines our modern ways of schooling youth in light of philosophic and personal narrative accounts of "the Dionysian" aspect--a term the author uses to understand his own experiences and aspirations as a high school English teacher. Having articulated the meaning of this term, he goes on to point out how schools today are…

  19. High-Tech School Bus Teaches Students on the Road

    Science.gov (United States)

    Katims, Lauren

    2011-01-01

    Last year, kindergarten through high school students in the rural Hector, Arkansas, School District barely had the technology resources that keep kids interested in math and science. This year, they potentially have the most advanced resources in the country--before they even step into the classroom. One school bus in Arkansas' Pope County has…

  20. Why Sleep Matters-The Economic Costs of Insufficient Sleep: A Cross-Country Comparative Analysis.

    Science.gov (United States)

    Hafner, Marco; Stepanek, Martin; Taylor, Jirka; Troxel, Wendy M; van Stolk, Christian

    2017-01-01

    The Centers for Disease Control and Prevention (CDC) in the United States has declared insufficient sleep a "public health problem." Indeed, according to a recent CDC study, more than a third of American adults are not getting enough sleep on a regular basis. However, insufficient sleep is not exclusively a US problem, and equally concerns other industrialised countries such as the United Kingdom, Japan, Germany, or Canada. According to some evidence, the proportion of people sleeping less than the recommended hours of sleep is rising and associated with lifestyle factors related to a modern 24/7 society, such as psychosocial stress, alcohol consumption, smoking, lack of physical activity and excessive electronic media use, among others. This is alarming as insufficient sleep has been found to be associated with a range of negative health and social outcomes, including success at school and in the labour market. Over the last few decades, for example, there has been growing evidence suggesting a strong association between short sleep duration and elevated mortality risks. Given the potential adverse effects of insufficient sleep on health, well-being and productivity, the consequences of sleep-deprivation have far-reaching economic consequences. Hence, in order to raise awareness of the scale of insufficient sleep as a public-health issue, comparative quantitative figures need to be provided for policy- and decision-makers, as well as recommendations and potential solutions that can help tackling the problem.

  1. High School Physics Students' Personal Epistemologies and School Science Practice

    Science.gov (United States)

    Alpaslan, Muhammet Mustafa; Yalvac, Bugrahan; Loving, Cathleen

    2017-11-01

    This case study explores students' physics-related personal epistemologies in school science practices. The school science practices of nine eleventh grade students in a physics class were audio-taped over 6 weeks. The students were also interviewed to find out their ideas on the nature of scientific knowledge after each activity. Analysis of transcripts yielded several epistemological resources that students activated in their school science practice. The findings show that there is inconsistency between students' definitions of scientific theories and their epistemological judgments. Analysis revealed that students used several epistemological resources to decide on the accuracy of their data including accuracy via following the right procedure and accuracy via what the others find. Traditional, formulation-based, physics instruction might have led students to activate naive epistemological resources that prevent them to participate in the practice of science in ways that are more meaningful. Implications for future studies are presented.

  2. Structural Intervention With School Nurses Increases Receipt of Sexual Health Care Among Male High School Students.

    Science.gov (United States)

    Dittus, Patricia J; Harper, Christopher R; Becasen, Jeffrey S; Donatello, Robin A; Ethier, Kathleen A

    2018-01-01

    Adolescent males are less likely to receive health care and have lower levels of sexual and reproductive health (SRH) knowledge than adolescent females. The purpose of this study was to determine if a school-based structural intervention focused on school nurses increases receipt of condoms and SRH information among male students. Interventions to improve student access to sexual and reproductive health care were implemented in six urban high schools with a matched set of comparison schools. Interventions included working with school nurses to improve access to sexual and reproductive health care, including the provision of condoms and information about pregnancy and sexually transmitted disease prevention and services. Intervention effects were assessed through five cross-sectional yearly surveys, and analyses include data from 13,740 male students. Nurses in intervention schools changed their interactions with male students who visited them for services, such that, among those who reported they went to the school nurse for any reason in the previous year, those in intervention schools reported significant increases in receipt of sexual health services over the course of the study compared with students in comparison schools. Further, these results translated into population-level effects. Among all male students surveyed, those in intervention schools were more likely than those in comparison schools to report increases in receipt of sexual health services from school nurses. With a minimal investment of resources, school nurses can become important sources of SRH information and condoms for male high school students. Published by Elsevier Inc.

  3. Bullying victimization and student engagement in elementary, middle, and high schools: Moderating role of school climate.

    Science.gov (United States)

    Yang, Chunyan; Sharkey, Jill D; Reed, Lauren A; Chen, Chun; Dowdy, Erin

    2018-03-01

    Bullying is the most common form of school violence and is associated with a range of negative outcomes, including traumatic responses. This study used hierarchical linear modeling to examine the multilevel moderating effects of school climate and school level (i.e., elementary, middle, and high schools) on the association between bullying victimization and student engagement. Participants included 25,896 students in 4th to 12th grades from 114 schools. Results indicated that, after controlling for student and school demographic factors, positive school climate was associated with higher behavioral/cognitive and emotional engagement of students across all grades. This highlights the critical and fundamental role of positive school climate in bullying prevention and intervention, among students across all grade levels, including those with frequent bullying victimization experience. Results also showed that negative associations between student-level bullying victimization and engagement were intensified in more positive school climates. This finding suggests that, in comparison with students in schools with less positive school climates, the engagement of bullying victims in schools with a more positive school climate might be more negatively influenced by their victimization experience. Additionally, the relation between student-level bullying victimization and emotional engagement was significantly different across middle and high schools. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  4. A Study of School Size among Alabama’s Public High Schools

    Directory of Open Access Journals (Sweden)

    Ronald A. Lindahl

    2012-01-01

    Full Text Available The purpose of this study was to examine the relationship between the size of Alabama’s public high schools, selected school quality and financial indicators, and their students’ performance on standardized exams. When the socioeconomic level of the student bodies is held constant, the size of high schools in Alabama has relatively little relationship with 11th grade student (both regular and special education performance on the reading and math portions of the Alabama High School Graduation Exam (AHSGE. High schools’ average daily attendance rates and pupil-to-computer (and computer with Internet connections ratios do not vary in accordance with school size. Higher percentages of highly qualified teachers are found in Alabama’s largest high schools. There was very little difference in the percentage of teachers with a master’s degree or above across school size categories. Very little difference exists across size categories in regard to mean expenditures per pupil (range = $7,322 to $7,829. However, districts of the large high schools exert over twice the effort of those with small high schools (3.2 mills to 1.5 mills and approximately 50 percent greater local effort than the districts of the medium-size high schools.

  5. Nuclear science experiments in high schools

    International Nuclear Information System (INIS)

    Lowenthal, G.C.

    1990-01-01

    This paper comments on the importance of nuclear science experiments and demonstrations to science education in secondary schools. It claims that radiation protection is incompletly realised unless supported by some knowledge about ionizing radiations. The negative influence of the NHMRC Code of Practice on school experiments involving ionizing radiation is also outlined. The authors offer some suggestions for a new edition of the Code with a positive approach to nuclear science experiments in schools. 7 refs., 4 figs

  6. Affect of school related factors in the student's choices of the high school

    OpenAIRE

    Gönül Cengiz; Osman Titrek; Özcan Erkan Akgün

    2007-01-01

    It is studied that to determine the school related factors which affects the students’ choices of the high school, according to the type of the schools. This is a survey study. The participants are 523  9 th grade students in 21 secondary schools in Adapazarı. SPSS is used for analyzing data. Kay-Kare Test is used to determine the demografic differences due to the type of the school. To analyze the data for the school related factors, Kruskal Wallis is used. As a result, it is expr...

  7. A photovoice study of school belongingness among high school students in Norway.

    Science.gov (United States)

    Lieblein, Vaiva Sunniva Deraas; Warne, Maria; Huot, Suzanne; Laliberte Rudman, Debbie; Raanaas, Ruth Kjærsti

    2018-12-01

    Although high school graduation is important for living conditions and health throughout life, many students do not complete. In Norway's northern most county, Finnmark, up to 45% of students do not complete high school. Contrary to prior research that has primarily focused on causes for dropout, this study's aim was to deepen understanding of factors that support high school attendance. A strengths-based participatory approach using photovoice addressed attendance factors as perceived by seven participating students from one high school in Finnmark. Qualitative content analysis of data generated through group dialogue about participant-generated photos and individual interviews identified six factors important for students' school attendance: a supportive school environment, a good learning environment, recuperation and recreation, family and friends, goals and ambitions, and place attachment. Related aspects of a supportive environment and belongingness, where school staff made important contributions to promoting a positive environment, were essential.

  8. The Kennedy Report: Commission Evaluates High School Journalism

    Science.gov (United States)

    Heintz, Ann

    1974-01-01

    Presents excerpts from the report of the Kennedy Commission of Inquiry into High School Journalism, concentrating on censorship, minority participation, journalism education, established media, and censorship issues.

  9. The School Counselor Leading (Social) Entrepreneurship within High Schools

    Science.gov (United States)

    Cuervo, Gemma; Alvarez, Isabel

    2016-01-01

    This article aims to determine the role that should exercise a School Counselor in social entrepreneurship education programs. To achieve this objective, first, we have analyzed the main approaches of these programs that are being carried out currently in Europe, which has allowed getting a concrete and contextualized idea about the status of the…

  10. Extreme Consumption Drinking Gaming and Prepartying among High School Students

    Science.gov (United States)

    Tomaso, Cara C.; Zamboanga, Byron L.; Haas, Amie L.; Kenney, Shannon R.; Ham, Lindsay S.; Borsari, Brian

    2016-01-01

    Drinking games and prepartying (i.e., drinking before going to a social gathering/event) have emerged as high-risk drinking behaviors in high school students. The present study examines the current prepartying behaviors of high school students who report current participation in extreme-consumption games (e.g., chugging) with those who do not.…

  11. A Pilot Study of a Kindergarten Summer School Reading Program in High-Poverty Urban Schools

    Science.gov (United States)

    Denton, Carolyn A.; Solari, Emily J.; Ciancio, Dennis J.; Hecht, Steven A.; Swank, Paul R.

    2010-01-01

    This pilot study examined an implementation of a kindergarten summer school reading program in 4 high-poverty urban schools. The program targeted both basic reading skills and oral language development. Students were randomly assigned to a treatment group (n = 25) or a typical practice comparison group (n = 28) within each school; however,…

  12. Excellence in Urban High Schools: An Emerging District/School Perspective.

    Science.gov (United States)

    Yin, Robert K.; And Others

    This report presents the preliminary findings of the District/Secondary School Study. The study had two purposes: (1) to identify ways of managing urban high schools to produce excellence, and (2) to recommend policy-relevant guidance to existing school and district administrators. The study design focused on the testing of two specific theories…

  13. Leadership to Build a Democratic Community within School: A Case Study of Two Korean High Schools

    Science.gov (United States)

    Kang, Young Taek; Printy, Susan

    2009-01-01

    This article aims to explore how democratic community is manifest in schools in Korea. It also tries to examine how leadership, specifically transformational leadership, functions in shaping a democratic community within a school. Toward this aim, we have conducted a case study of two religious high schools in Korea. Based on the findings from the…

  14. Assessment of Secondhand Smoke Exposure at School among U.S. Middle and High School Students

    Science.gov (United States)

    Olufajo, Olubode Ademola; Agaku, Israel Terungwa

    2015-01-01

    To obtain nationally representative estimates of the prevalence of secondhand smoke (SHS) exposure at U.S. schools, we assessed the prevalence and correlates of SHS exposure at school among U.S. middle and high school students using data from the 2011 National Youth Tobacco Survey comprising of 18,866 students spread across all the U.S. states.…

  15. The Effects of Home-School Dissonance on African American Male High School Students

    Science.gov (United States)

    Brown-Wright, Lynda; Tyler, Kenneth Maurice

    2010-01-01

    The current study examined associations between home-school dissonance and several academic and psychological variables among 80 African American male high school students. Regression analyses revealed that home-school dissonance significantly predicted multiple academic and psychological variables, including amotivation, academic cheating,…

  16. Guiding High School Students through Applied Internship Projects in College Environments: A Met School Story

    Science.gov (United States)

    Hassan, Said

    2012-01-01

    Many high school students are faced with the dilemma of "what next?" as they go through their final years at school. With new-economy jobs becoming more complex and career paths increasingly convoluted, the decision-making process is no simple task. What do these jobs and careers entail? How does what they are studying in school relate…

  17. Reducing School Factors That Lead to Student Dropout at Sussex Central High School

    Science.gov (United States)

    Jerns, Pamela Renee

    2012-01-01

    The focus of this Executive Position Paper (EPP) is to address the dropout rate at Sussex Central High School (SCHS) in the Indian River School District (IRSD). Studies conducted for this EPP align with current research--student dropout is a result of culminating school-based factors that include poor attendance and lack of exposure to rigorous…

  18. The Nature, Causes and Effects of School Violence in South African High Schools

    Science.gov (United States)

    Ncontsa, Vusumzi Nelson; Shumba, Almon

    2013-01-01

    We sought to investigate the nature, causes and effects of school violence in four South African high schools. A purposive sample of five principals, 80 learners and 20 educators was selected from the four schools used in the study. A sequential mixed method approach was used in this study; both questionnaires and interviews were used. The design…

  19. High School Dropouts: Interactions between Social Context, Self-Perceptions, School Engagement, and Student Dropout

    Science.gov (United States)

    Fall, Anna-Maria; Roberts, Greg

    2012-01-01

    Research suggests that contextual, self-system, and school engagement variables influence dropping out from school. However, it is not clear how different types of contextual and self-system variables interact to affect students' engagement or contribute to decisions to dropout from high school. The self-system model of motivational development…

  20. Impact of Texas high school science teacher credentials on student performance in high school science

    Science.gov (United States)

    George, Anna Ray Bayless

    A study was conducted to determine the relationship between the credentials held by science teachers who taught at a school that administered the Science Texas Assessment on Knowledge and Skills (Science TAKS), the state standardized exam in science, at grade 11 and student performance on a state standardized exam in science administered in grade 11. Years of teaching experience, teacher certification type(s), highest degree level held, teacher and school demographic information, and the percentage of students who met the passing standard on the Science TAKS were obtained through a public records request to the Texas Education Agency (TEA) and the State Board for Educator Certification (SBEC). Analysis was performed through the use of canonical correlation analysis and multiple linear regression analysis. The results of the multiple linear regression analysis indicate that a larger percentage of students met the passing standard on the Science TAKS state attended schools in which a large portion of the high school science teachers held post baccalaureate degrees, elementary and physical science certifications, and had 11-20 years of teaching experience.

  1. Technical Challenges and Potential Solutions for Cross-Country Multi-Terminal Superconducting DC Power Cables

    Science.gov (United States)

    Al-Taie, A.; Graber, L.; Pamidi, S. V.

    2017-12-01

    Opportunities for applications of high temperature superconducting (HTS) DC power cables for long distance power transmission in increasing the reliability of the electric power grid and to enable easier integration of distributed renewable sources into the grid are discussed. The gaps in the technology developments both in the superconducting cable designs and cryogenic systems as well as power electronic devices are identified. Various technology components in multi-terminal high voltage DC power transmission networks and the available options are discussed. The potential of ongoing efforts in the development of superconducting DC transmission systems is discussed.

  2. Cigar Product Modification Among High School Youth.

    Science.gov (United States)

    Trapl, Erika S; Koopman Gonzalez, Sarah J; Cofie, Leslie; Yoder, Laura D; Frank, Jean; Sterling, Kymberle L

    2018-02-07

    Prevalence of cigar use has been increasing among youth. Research indicates that youth are modifying cigar products either by "freaking" (ie, removing the filter paper) or "blunting" (removing the tobacco and supplementing or replacing with marijuana), yet little is known about youth who engage in this behavior. Thus, this study examines demographic and concurrent substance use behaviors of youth who modify cigars. Data from the 2013 Cuyahoga County Youth Risk Behavior survey were examined (n = 16 855). The survey collected data on demographics, cigar product use, cigar modification behaviors, and current cigarette, hookah and marijuana use. Responses to cigar product use items were used to create a composite to classify youth in one of eight unique user categories. Univariate and bivariate statistics were calculated using SPSS complex samples procedures. Overall, 15.2% reported current cigar product use, 11.0% reported current freaking, and 18.5% reported current blunt use; taken together, 25.3% of respondents reported any current use of a cigar product. When examined by user category, of those who endorsed any cigar product use, cigars, cigarillos, and little cigars use only was most endorsed (26.3%), followed by Blunt only (25.2%) and all three (ie, cigars, cigarillos, and little cigars, freaking, and blunting; 17.4%). A substantial proportion of high school youth who report using cigar products are modifying them in some way, with nearly half freaking and nearly two-thirds blunting. Given the FDA Center for Tobacco products recent extension of its regulatory authority to include cigar products, it is imperative to understand more about the prevalence of and reasons for cigar modification behaviors. Although the FDA has recently enacted regulatory authority over cigar products, little is known about cigar product modification. This is the first study to concurrently examine two unique cigar modification behaviors, "freaking" (ie, removing the filter paper) and

  3. A Cross-country Comparison of Success Factor Priorities for Health Information Technology Managers

    DEFF Research Database (Denmark)

    Nguyen, Thi Thanh Hai; Eikebrokk, Tom Roar; Moe, Carl Erik

    2015-01-01

    agree highly with each other in their judgment of the importance of these success factors. While Nordic countries’ healthcare systems and culture are relatively similar, the results suggest that an internationally applicable set of recommendations for the successful completion of HIT implementations...

  4. Sexual Harassment, Bullying, and School Outcomes for High School Girls and Boys.

    Science.gov (United States)

    Gruber, James; Fineran, Susan

    2016-01-01

    A comparison of the impact of bullying and sexual harassment on five school outcomes was conducted on a sample of high school students. Results revealed that sexual harassment was a stronger predictor than bullying of all school outcomes for both sexes, but especially for girls. This study suggests that sexual harassment, which activates sexist and heterosexist stereotypes, erodes school engagement, alienates students from teachers, and adversely affects academic achievement, to a greater degree than bullying does. © The Author(s) 2015.

  5. Identifying and Understanding Effective High School Practices

    Science.gov (United States)

    Rutledge, Stacey A.; Cannata, Marisa

    2016-01-01

    The authors report on a yearlong investigation into similar schools that performed well and less well in the same district. They found that the higher-performing schools engaged in an intentional set of systemic practices that encourage Personalization for Academic and Social Learning (PASL) in one district and integrated structures of academic…

  6. Student engagement and its relationship with early high school dropout.

    Science.gov (United States)

    Archambault, Isabelle; Janosz, Michel; Fallu, Jean-Sébastien; Pagani, Linda S

    2009-06-01

    Although the concept of school engagement figures prominently in most school dropout theories, there has been little empirical research conducted on its nature and course and, more importantly, the association with dropout. Information on the natural development of school engagement would greatly benefit those interested in preventing student alienation during adolescence. Using a longitudinal sample of 11,827 French-Canadian high school students, we tested behavioral, affective, cognitive indices of engagement both separately and as a global construct. We then assessed their contribution as prospective predictors of school dropout using factor analysis and structural equation modeling. Global engagement reliably predicted school dropout. Among its three specific dimensions, only behavioral engagement made a significant contribution in the prediction equation. Our findings confirm the robustness of the overall multidimensional construct of school engagement, which reflects both cognitive and psychosocial characteristics, and underscore the importance attributed to basic participation and compliance issues in reliably estimating risk of not completing basic schooling during adolescence.

  7. The Effects of a 10-day Altitude Training Camp at 1828 Meters on Varsity Cross-Country Runners.

    Science.gov (United States)

    Diebel, Sebastian R; Newhouse, Ian; Thompson, David S; Johnson, Vineet B K

    2017-01-01

    Altitude training has been shown to alter blood lactate (BL) levels due to alterations resulting from acclimatization. This study aims to estimate the impact of altitude training on BL changes immediately following an incremental treadmill test and during recovery before and after 10-day altitude training at approximately 1828 meters. Eight varsity cross-country runners performed an incremental treadmill test (ITT), pre and post-altitude training. Resting and post-warm-up BL values were recorded. During ITT, heart rate (HR), oxygen saturation (SpO2), and time to exhaustion were monitored. BL was also measured post-ITT at 0, 2, 4, 6, and 8 minutes. The average of all BL values was higher following altitude intervention (8.8 ± 4.6 mmol/L) compared to pre-intervention (7.4 ± 3.3 mmol/L). These differences were statistically significant ( t (6) = -2.40, p = .026). BL immediately (0 minutes) after the ITT was higher following the altitude intervention (13.6 ± 3.6 mmol/L) compared to pre-intervention (9.7 ± 3.8 mmol/L) and was statistically significant ( t (7) = -3.30, p = .006). Average HR during the ITT was lower following the altitude intervention (176.9 ± 11.1 bpm) compared to pre (187 ± 9.5 bpm), these differences were statistically significant ( t (28)= 18.07, p= altitude intervention at 1828 meters may benefit varsity cross-country runners. The higher post-exercise BL may be attributed to more anaerobic contributions. Lower HR may suggest a larger stroke volume and/or more efficient O2 carrying capacity.

  8. The effectiveness of front fork systems at damping accelerations during isolated aspects specific to cross-country mountain biking.

    Science.gov (United States)

    Macdermid, Paul W; Miller, Matthew C; Fink, Philip W; Stannard, Stephen R

    2017-11-01

    Cross-country mountain bike suspension reportedly enhances comfort and performance through reduced vibration and impact exposure. This study analysed the effectiveness of three different front fork systems at damping accelerations during the crossing of three isolated obstacles (stairs, drop, and root). One participant completed three trials on six separate occasions in a randomised order using rigid, air-sprung, and carbon leaf-sprung forks. Performance was determined by time to cross obstacles, while triaxial accelerometers quantified impact exposure and damping response. Results identified significant main effect of fork type for performance time (p < 0.05). The air-sprung and leaf-sprung forks were significantly slower than the rigid forks for the stairs (p < 0.05), while air-sprung suspension was slower than the rigid for the root protocol (p < 0.05). There were no differences for the drop protocol (p < 0.05). Rigid forks reduced overall exposure (p < 0.05), specifically at the handlebars for the stairs and drop trials. More detailed analysis presented smaller vertical accelerations at the handlebar for air-sprung and leaf-sprung forks on the stairs (p < 0.05), and drop (p < 0.05) but not the root. As such, it appears that the suspension systems tested were ineffective at reducing overall impact exposure at the handlebar during isolated aspects of cross-country terrain features which may be influenced to a larger extent by rider technique.

  9. EARTHTIME: Teaching geochronology to high school students

    Science.gov (United States)

    Bookhagen, Britta; Buchwaldt, Robert; McLean, Noah; Rioux, Matthew; Bowring, Samuel

    2010-05-01

    The authors taught an educational module developed as part of the EARTHTIME (www.earth-time.org) outreach initiative to 215 high school students from a Massachusetts (USA) High School as part of an "out-of-school" field trip. The workshop focuses on uranium-lead (U-Pb) dating of zircons and its application to solving a geological problem. The theme of our 2.5-hour module is the timing of the K-T boundary and a discussion of how geochronology can be used to evaluate the two main hypotheses for the cause of the concurrent extinction—the Chicxlub impact and the massive eruption of the Deccan Traps. Activities are divided into three parts: In the first part, the instructors lead hands-on activities demonstrating how rock samples are processed to isolate minerals by their physical properties. Students use different techniques, such as magnetic separation, density separation using non-toxic heavy liquids, and mineral identification with a microscope. We cover all the steps from sampling an outcrop to determining a final age. Students also discuss geologic features relevant to the K-T boundary problem and get the chance to examine basalts, impact melts and meteorites. In the second part, we use a curriculum developed for and available on the EARTHTIME website (http://www.earth-time.org/Lesson_Plan.pdf). The curriculum teaches the science behind uranium-lead dating using tables, graphs, and a geochronology kit. In this module, the students start by exploring the concepts of half-life and exponential decay and graphically solving the isotopic decay equation. Manipulating groups of double-sided chips labeled with U and Pb isotopes reinforces the concept that an age determination depends on the Pb/U ratio, not the absolute number of atoms present. Next, the technique's accuracy despite loss of parent and daughter atoms during analysis, as well as the use of isotopic ratios rather than absolute abundances, is explained with an activity on isotope dilution. Here the students

  10. Cardiopulmonary resuscitation training in Washington state public high schools.

    Science.gov (United States)

    Reder, Sheri; Quan, Linda

    2003-03-01

    To determine the best approaches for increasing cardiopulmonary resuscitation (CPR) training opportunities for public high school students, we conducted a statewide survey of all 310 public high schools in Washington State. The findings describe CPR student training currently provided by high schools, barriers to providing, and strategies to increase CPR training of high school students. The response rate was 89% (276 schools) from a combination of mail and telephone surveys; 35% (n=97) reported that they did not provide any CPR student training. Of the 132 schools that provided CPR student training, 23% trained less than 10% of their students, and 39% trained more than 90% of their students. The majority of public high schools, 70%, did not have any teacher trained to teach CPR or had only one teacher with such training. Yet 80% of schools felt that CPR training is best provided in school settings. Schools perceived the greatest benefit of CPR training as providing students with the skill to save a life (43%). The most frequently identified barriers were logistical: limited time to teach the curriculum (24%), lack of funds (16%), and instructor scheduling difficulties (17%). Less than 5% of respondents voiced any opposition to CPR training, and that opposition was for logistical reasons. To increase CPR training, the single best strategies suggested were: increase funding, provide time in the curriculum, have more certified instructors, and make CPR student training a requirement.

  11. Cross-Country Electricity Trade, Renewable Energy and European Transmission Infrastructure Policy

    OpenAIRE

    Abrell, Jan; Rausch, Sebastian

    2016-01-01

    This paper develops a multi-country multi-sector general equilibrium model, integrating high-frequency electricity dispatch and trade decisions, to study the e ects of electricity transmission infrastructure (TI) expansion and re- newable energy (RE) penetration in Europe for gains from trade and carbon dioxide emissions in the power sector. TI can bene t or degrade environ- mental outcomes, depending on RE penetration: it complements emissions abatement by mitigating dispatch problems associ...

  12. High School Students' Recommendations to Improve School Food Environments: Insights From a Critical Stakeholder Group.

    Science.gov (United States)

    Asada, Yuka; Hughes, Alejandro G; Read, Margaret; Schwartz, Marlene B; Chriqui, Jamie F

    2017-11-01

    The Healthy, Hunger-Free Kids Act of 2010 (HHFKA) directed the US Department of Agriculture (USDA) to revise school meal standards. Students are most affected by efforts to improve the school food environment; yet, few studies directly include students. This study examined high school students' experiences of school meal reform to gain insight into implementation recommendations. We conducted 5 focus groups with high school students (N = 15) from high schools across 9 states. We also conducted follow-up interviews to further explore personal experiences. Focus groups and interview transcripts were coded and organized in Atlas.ti v7 by analysts, following principles of constant comparative analysis. Students reported overall positive perceptions of the revised school meal standards and supported continued efforts to improve the food environment. Recommendations to improve the food environment included engaging students, focusing on the quality and palatability of meal items, moving toward scratch-cooking, and addressing cafeteria infrastructure. Students' recommendations point to opportunities where school districts, as well as local, state, and federal organizations can work to improve the school food environment. Their insights are directly relevant to USDA's recently released Local School Wellness Policy final rule, of which school meal standards are one provision. © 2017, American School Health Association.

  13. School and community predictors of smoking: a longitudinal study of Canadian high schools.

    Science.gov (United States)

    Lovato, Chris; Watts, Allison; Brown, K Stephen; Lee, Derrick; Sabiston, Catherine; Nykiforuk, Candace; Eyles, John; Manske, Steve; Campbell, H Sharon; Thompson, Mary

    2013-02-01

    We identified the most effective mix of school-based policies, programs, and regional environments associated with low school smoking rates in a cohort of Canadian high schools over time. We collected a comprehensive set of student, school, and community data from a national cohort of 51 high schools in 2004 and 2007. Hierarchical linear modeling was used to predict school and community characteristics associated with school smoking prevalence. Between 2004 and 2007, smoking prevalence decreased from 13.3% to 10.7% in cohort schools. Predictors of lower school smoking prevalence included both school characteristics related to prevention programming and community characteristics, including higher cigarette prices, a greater proportion of immigrants, higher education levels, and lower median household income. Effective approaches to reduce adolescent smoking will require interventions that focus on multiple factors. In particular, prevention programming and high pricing for cigarettes sold near schools may contribute to lower school smoking rates, and these factors are amenable to change. A sustained focus on smoking prevention is needed to maintain low levels of adolescent smoking.

  14. Violence Prevention after Columbine: A Survey of High School Mental Health Professionals

    Science.gov (United States)

    Crepeau-Hobson, M. Franci; Filaccio, Marylynne; Gottfried, Linda

    2005-01-01

    The authors examined changes in mental health services and violence prevention strategies in public high schools since the shootings at Columbine High School. Surveys were mailed to school mental health professionals at public high schools in Colorado. Respondents included school counselors, school psychologists, school social workers, principals,…

  15. Principals' Perceptions of Professional Development in High- and Low-Performing High-Poverty Schools

    Science.gov (United States)

    Moore, Sheila; Kochan, Frances

    2013-01-01

    This is the second part of a two-part study examining issues related to professional development in high-poverty schools. The findings from the initial study indicated that principals in high-poverty, high-performing schools perceived higher levels of implementation of quality professional development standards in their schools than did principals…

  16. Educational Management Organizations as High Reliability Organizations: A Study of Victory's Philadelphia High School Reform Work

    Science.gov (United States)

    Thomas, David E.

    2013-01-01

    This executive position paper proposes recommendations for designing reform models between public and private sectors dedicated to improving school reform work in low performing urban high schools. It reviews scholarly research about for-profit educational management organizations, high reliability organizations, American high school reform, and…

  17. The Global Systems Science High School Curriculum

    Science.gov (United States)

    Gould, A. D.; Sneider, C.; Farmer, E.; Erickson, J.

    2015-12-01

    Global Systems Science (GSS), a high school integrated interdisciplinary science project based at Lawrence Hall of Science at UC Berkeley, began in the early 1990s as a single book "Planet at Risk" which was only about climate change. Federal grants enabled the project to enlist about 150 teachers to field test materials in their classes and then meeting in summer institutes to share results and effect changes. The result was a series of smaller modules dealing not only with climate change, but other related topics including energy flow, energy use, ozone, loss of biodiversity, and ecosystem change. Other relevant societal issues have also been incorporated including economics, psychology and sociology. The course has many investigations/activities for student to pursue, interviews with scientists working in specific areas of research, and historical contexts. The interconnectedness of a myriad of small and large systems became an overarching theme of the resulting course materials which are now available to teachers for free online at http://www.globalsystemsscience.org/

  18. THE CAUSES OF ABSENTEEISM OF HIGH SCHOOL STUDENTS

    OpenAIRE

    Gürbüz Ocak; İjlal Ocak; Emine A. Baysal

    2017-01-01

    The purpose of this study is to find out the causes of high school students’ absenteeism. Survey method was used. The population was comprised of 531 students in the public high schools. The data was collected with "The Scale of Absenteeism Causes" developed by the researchers. Cronbach Alpha was calculated as α=0.936. Findings show the causes of students' absenteeism aren't related to school, students themselves and their parent, however, student absenteeism causes partly psychological reaso...

  19. High-Performance Schools: Affordable Green Design for K-12 Schools; Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Plympton, P.; Brown, J.; Stevens, K.

    2004-08-01

    Schools in the United States spend $7.8 billion on energy each year-more than the cost of computers and textbooks combined, according to a 2003 report from the National Center for Education Statistics. The U.S. Department of Energy (DOE) estimates that these high utility bills could be reduced as much as 25% if schools adopt readily available high performance design principles and technologies. Accordingly, hundreds of K-12 schools across the country have made a commitment to improve the learning and teaching environment of schools while saving money and energy and protecting the environment. DOE and its public- and private-sector partners have developed Energy Design Guidelines for High Performance Schools, customized for nine climate zones in U.S. states and territories. These design guidelines provide information for school decision makers and design professionals on the advantages of energy efficiency and renewable energy designs and technologies. With such features as natural day lighting, efficient electric lights, water conservation, and renewable energy, schools in all types of climates are proving that school buildings, and the students and teachers who occupy them, are indeed high performers. This paper describes high performance schools from each of the nine climate zones associated with the Energy Design Guidelines. The nine case studies focus on the high performance design strategies implemented in each school, as well as the cost savings and benefits realized by students, faculty, the community, and the environment.

  20. Engaging High School Youth in Paleobiology Research

    Science.gov (United States)

    Saltzman, J.; Heim, N. A.; Payne, J.

    2013-12-01

    The chasm between classroom science and scientific research is bridged by the History of Life Internships at Stanford University. Nineteen interns recorded more than 25,500 linear body size measurements of fossil echinoderms and ostracods spanning more than 11,000 species. The interns were selected from a large pool of applicants, and well-established relationships with local teachers at schools serving underrepresented groups in STEM fields were leveraged to ensure a diverse mix of applicants. The lead investigator has been hosting interns in his research group for seven years, in the process measuring over 36,000 foraminfera species as well as representatives from many other fossil groups. We (faculty member, researcher, and educators) all find this very valuable to engage youth in novel research projects. We are able to create an environment where high school students can make genuine contributions to jmportant and unsolved scientific problems, not only through data collection but also through original data analysis. Science often involves long intervals of data collection, which can be tedious, and big questions often require big datasets. Body size evolution is ideally suited to this type of program, as the data collection process requires substantial person-power but not deep technical expertise or expensive equipment. Students are therefore able to engage in the full scientific process, posing previously unanswered questions regarding the evolution of animal size, compiling relevant data, and then analyzing the data in order to test their hypotheses. Some of the projects students developed were truly creative and fun to see come together. Communicating is a critical step in science yet is often lost in the science classroom. The interns submitted seven abstracts to this meeting for the youth session entitled Bright STaRS based on their research projects. To round out the experience, students also learn about the broad field of earth sciences through

  1. HIV/AIDS health care challenges for cross-country migrants in low- and middle-income countries: a scoping review

    Science.gov (United States)

    Suphanchaimat, Rapeepong; Sommanustweechai, Angkana; Khitdee, Chiraporn; Thaichinda, Chompoonut; Kantamaturapoj, Kanang; Leelahavarong, Pattara; Jumriangrit, Pensom; Topothai, Thitikorn; Wisaijohn, Thunthita; Putthasri, Weerasak

    2014-01-01

    Introduction HIV/AIDS has been one of the world’s most important health challenges in recent history. The global solidarity in responding to HIV/AIDS through the provision of antiretroviral therapy (ART) and encouraging early screening has been proved successful in saving lives of infected populations in past decades. However, there remain several challenges, one of which is how HIV/AIDS policies keep pace with the growing speed and diversity of migration flows. This study therefore aimed to examine the nature and the extent of HIV/AIDS health services, barriers to care, and epidemic burdens among cross-country migrants in low-and middle-income countries. Methods A scoping review was undertaken by gathering evidence from electronic databases and gray literature from the websites of relevant international initiatives. The articles were reviewed according to the defined themes: epidemic burdens of HIV/AIDS, barriers to health services and HIV/AIDS risks, and the operational management of the current health systems for HIV/AIDS. Results Of the 437 articles selected for an initial screening, 35 were read in full and mapped with the defined research questions. A high HIV/AIDS infection rate was a major concern among cross-country migrants in many regions, in particular sub-Saharan Africa. Despite a large number of studies reported in Africa, fewer studies were found in Asia and Latin America. Barriers of access to HIV/AIDS services comprised inadequate management of guidelines and referral systems, discriminatory attitudes, language differences, unstable legal status, and financial hardship. Though health systems management varied across countries, international partners consistently played a critical role in providing support for HIV/AIDS services to uninsured migrants and refugees. Conclusion It was evident that HIV/AIDS health care problems for migrants were a major concern in many developing nations. However, there was little evidence suggesting if the current

  2. Taxation of Spouses: A Cross-Country Study of the Effects on Married Women's Labour Supply

    DEFF Research Database (Denmark)

    Callan, Tim; Dex, Shirley; Smith, Nina

    1999-01-01

    The labour force participation rate of married women varies considerably between the European countries. There may be several explanations for this evidence. In this study, the effect of the different income tax schemes on female labour force participation is investigated and compared. A common...... of married women if the households were taxed by either separate or split taxation principles, as in Britain and Ireland, respectively. The results show that the design of the tax scheme is highly important for the economic incentives that married women face and their resulting labour supply behaviour....... labour supply function is estimated on cross-section household samples for each of the countries Britain, Denmark, Ireland, and East and West Germany. Based on the estimated labour supply functions, we calculate for each of the countries the hypothetical part time and full time participation rates...

  3. The heterogeneous landscape of innovation in female led-businesses – cross-country comparisons

    Directory of Open Access Journals (Sweden)

    Filculescu Adina

    2016-12-01

    Full Text Available Female led-businesses are nowadays regarded as a vehicle for worldwide economic and social wellbeing. Seen as a mechanism for better social inclusion, empowerment, wide institutional change and local economic development, female entrepreneurship has been the focus of many scholarly pursuits. However, one field in which the interest in female-led businesses has been somewhat overlooked and overshadowed by other topics is the field of innovation studies. There are various national and international programs meant to increase the level of innovativeness of female-led businesses and there are reports presenting somewhat contradictory results in which women business owners are portrayed either as more innovative or at a disadvantage when it comes to the resources needed for innovation in comparison to their male counterparts. Thus, this study seeks to disentangle the various aspects which affect the landscape of innovation in female led-businesses by focusing on the way in which the national contexts creates opportunities or barriers for innovation. Based on the qualitative data provided by the GEM 2012 Adult Population Survey, we show that, in the case of the six countries included in the sample, the landscape is highly heterogeneous and that macrolevel indicators such as percentage of female entrepreneurs, public support for high growth female entrepreneurship and gender equality are not capable of fully explaining the innovation behavior of female-led businesses. The results presented here contribute to advancing the research on innovation and female entrepreneurship by opening up new avenues for research which will renounce the paradigm of an ideal type of female-led business, and start to seriously take into consideration the heterogeneity of these businesses and of the landscapes in which they operate.

  4. Eye Injuries in High School and Collegiate Athletes.

    Science.gov (United States)

    Boden, Barry P; Pierpoint, Lauren A; Boden, Rebecca G; Comstock, R Dawn; Kerr, Zachary Y

    Although eye injuries constitute a small percentage of high school and college sports injuries, they have the potential to be permanently debilitating. Eye injury rates will vary by sport, sex, and between the high school and college age groups. Descriptive epidemiology study. Level 3. Data from eye injury reports in high school and college athletes were obtained from the National High School Sports-Related Injury Surveillance System, High School Reporting Information Online (HS RIO) database over a 10-year span (2005-2006 through 2014-2015 school years) and the National Collegiate Athletic Association (NCAA) Injury Surveillance Program (ISP) over an 11-year span (2004-2005 through 2014-2015 school years). Injury rates per 100,000 athlete-exposures (AEs), injury rate ratios (RRs), and 95% CIs were calculated. Distributions of eye injuries by diagnosis, mechanism, time loss, and surgery needs were also examined. A total of 237 and 273 eye injuries were reported in the HS RIO and the NCAA ISP databases, respectively. The sports with the highest eye injury rates (per 100,000 AEs) for combined high school and college athletes were women's basketball (2.36), women's field hockey (2.35), men's basketball (2.31), and men's wrestling (2.07). Overall eye injury rates at the high school and college levels were 0.68 and 1.84 per 100,000 AEs, respectively. Eye injury rates were higher in competition than practice in high school (RR, 3.47; 95% CI, 2.69-4.48) and college (RR, 3.13; 95% CI, 2.45-3.99). Most injuries were contusions (high school, 35.9%; college, 33.3%) and due to contact (high school, 89.9%; college, 86.4%). Only a small percentage of injuries resulted in time loss over 21 days (high school, 4.2%; college, 3.0%). Eye injury rates and patterns vary by sport, sex, and between the high school and college age groups. Although severe injuries do occur, most eye injuries sustained by high school and college athletes are minor, with limited time loss and full recovery

  5. Approaches to School Leadership in Inclusive STEM High Schools: A Cross-Case Analysis

    Science.gov (United States)

    Ford, Michael Robert

    Inclusive STEM-focused high schools (ISHSs) are a relatively new phenomenon in the landscape of public education. This study of four exemplar ISHSs (identified by experts in STEM education as highly successfully in preparing students underrepresented in STEM for STEM majors in college and future STEM careers) provides a rich description of the approach to ISHS school leadership by identifying various internal and external leadership factors influencing school leadership. This study examined an existing data set that included site visits to four ISHSs along with pre- and post-visit data, and a cross-case analysis focused on the leadership contributions of ISHS leaders and their larger community. This study found that the ISHSs expanded the concept of school leadership to include leadership both within and outside the school. In addition, school leaders needed autonomy to innovate and respond to their schools' needs. This included autonomy in hiring new teachers, autonomy from school district influence, and autonomy from restrictive teachers' union regulation and policies. Finally, ISHSs needed to continually invest in increasing their schools' capacities. This included investing in teacher professionalization, providing pathways for school leadership, collaborating with business and industry, and identifying the best student supports. A product of this study was a proposition for characterizing school leadership in an ISHS. This proposition may offer valuable insight, implications, and information for states and schools districts that may be planning or improving STEM education programs.

  6. High schools and labour market outcomes: Italian graduates

    DEFF Research Database (Denmark)

    Pozzoli, Dario

    2007-01-01

    To provide empirical evidence on differences across high school tracks in early occupational labour market outcome, I estimate how the employment probability, the time before the first job is taken up, and earnings depend on high school type, controlling for student characteristics by a propensit...

  7. ExpandED Options: Learning beyond High School Walls

    Science.gov (United States)

    ExpandED Schools, 2014

    2014-01-01

    Through ExpandED Options by TASC, New York City high school students get academic credit for learning career-related skills that lead to paid summer jobs. Too many high school students--including those most likely to drop out--are bored or see classroom learning as irrelevant. ExpandED Options students live the connection between mastering new…

  8. GIS Adoption among Senior High School Geography Teachers in Taiwan

    Science.gov (United States)

    Lay, Jinn-Guey; Chen, Yu-Wen; Chi, Yu-Lin

    2013-01-01

    This article explores the adoption of geographic information system (GIS) knowledge and skills through in-service training for high school geography teachers in Taiwan. Through statistical analysis of primary data collected from a census of Taiwan's high school geography teachers, it explores what motivates these teachers to undertake GIS…

  9. Standards for the High School Psychology Course. ERIC Digest.

    Science.gov (United States)

    Morganett, L. Lee

    The latest contribution to the content standards boom that began in the 1990s comes from the American Psychological Association (APA), which recently published "National Standards for the Teaching of High School Psychology." This Digest discusses: (1) the origin and purposes of the project to develop standards for high school psychology…

  10. River City High School Guidance Services: A Conceptual Model.

    Science.gov (United States)

    American Coll. Testing Program, Iowa City, IA.

    This model describes how the guidance staff at a hypothetical high school communicated the effectiveness of the guidance program to students, parents, teachers, and administrators. A description of the high school is presented, and guidance services and personnel are described. A conceptual model responding to student needs is outlined along with…

  11. Examining Gender Inequality in a High School Engineering Course

    Science.gov (United States)

    Riegle-Crumb, Catherine; Moore, Chelsea

    2013-01-01

    This paper examines gender inequality within the context of an upper-level high school engineering course recently offered in Texas. Data was collected from six high schools that serve students from a variety of backgrounds. Among the almost two hundred students who enrolled in this challenge-based engineering course, females constituted a clear…

  12. NASA Ames Summer High School Apprenticeship Research Program

    Science.gov (United States)

    Powell, P.

    1985-01-01

    The Summer High School Apprenticeship Research Program (SHARP) is described. This program is designed to provide engineering experience for gifted female and minority high school students. The students from this work study program which features trips, lectures, written reports, and job experience describe their individual work with their mentors.

  13. Interpretation Awareness of Creativity Mathematics Teacher High School

    Science.gov (United States)

    Mastuti, Ajeng Gelora; Nusantara, Toto; Purwanto; As'ari, Abdurrahman; Subanji; Abadyo; Susiswo

    2016-01-01

    The purposes of this study are: a) to investigate high school math teacher creativity equality, b) to investigate what factors can inhibit their creativity consciousness. The subjects of this study consisted of two high school math teacher who had a different experience academically. The results of the qualitative research show the relationship…

  14. Fears and Related Anxieties in Chinese High School Students

    Science.gov (United States)

    Li, Huijun; Prevatt, Frances

    2008-01-01

    Chinese students from different high school settings face unique academic and emotional challenges. They are in a very vulnerable position due to high parent and teacher expectations and pressure to succeed in college entrance examinations and honour the family and the school. They are also vulnerable due to possible inappropriate parenting…

  15. Determination of Healthy Lifestyle Behaviors of High School Students

    Science.gov (United States)

    Çelebi, Evrim; Gündogdu, Cemal; Kizilkaya, Aysel

    2017-01-01

    Healthy lifestyle behaviors can be defined as all the behaviors believed and applied by individuals to be healthy, maintain health and be protected from diseases. This study aims to determine the healthy lifestyle behaviors of high school students studying at the high schools in the Province of Elazig, Turkey. The study population of this…

  16. Centauri High School Teacher Honored as Colorado Outstanding Biology

    Science.gov (United States)

    Teacher Centauri High School Teacher Honored as Colorado Outstanding Biology Teacher For more information contact: e:mail: Public Affairs Golden, Colo., May 2, 1997 -- Tracy Swedlund, biology teacher at Centauri High School in LaJara, was selected as Colorado's 1997 Outstanding Biology Teacher and will be

  17. Elective course student sectioning at Danish high schools

    DEFF Research Database (Denmark)

    Kristiansen, Simon; Stidsen, Thomas Riis

    2016-01-01

    . This paper presents an Adaptive Large Neighborhood Search heuristic for the ESCC. The algorithm is applied to 80 real-life instances from Danish high schools and compared with solutions found by using the state-of-the-art MIP solver Gurobi. The algorithm has been implemented in the commercial product Lectio......, and is thereby available for approximately 200 high schools in Denmark....

  18. Family Influences on Dropout Behavior in One California High School.

    Science.gov (United States)

    Rumberger, Russell W.; And Others

    1990-01-01

    Investigated how family processes influence high school student dropout behavior. Used a sample of 114 dropouts from 1 California high school, 48 of whom were matched to similarly profiled continuing students. Identified factors that explain students' dropout decisions: permissive parenting, negative parental reactions to grades, excessive…

  19. Learner Factors in a High-Poverty Urban Middle School

    Science.gov (United States)

    Olivares-Cuhat, Gabriela

    2011-01-01

    The purpose of this pilot study is to gain more insight into learner factors prominent in high-poverty urban schools and to suggest pedagogical approaches appropriate to this environment. To this end, three surveys were administered to students attending a high-poverty, urban middle school in order to measure their learning style preferences,…

  20. The Family Liaison Position in High-Poverty, Urban Schools

    Science.gov (United States)

    Dretzke, Beverly J.; Rickers, Susan R.

    2016-01-01

    This study examined the roles and responsibilities of family liaisons working in urban schools with enrollments characterized by high poverty, high mobility, and ethnic diversity. Results indicated that the major responsibilities of the liaisons were creating a trusting and welcoming environment, facilitating parent involvement in the school,…

  1. Self-Concept and Achievement Motivation of High School Students

    Science.gov (United States)

    Lawrence, A. S. Arul; Vimala, A.

    2013-01-01

    The present study "Self-concept and Achievement Motivation of High School Students" was investigated to find the relationship between Self-concept and Achievement Motivation of High School Students. Data for the study were collected using Self-concept Questionnaire developed by Raj Kumar Saraswath (1984) and Achievement Motive Test (ACMT)…

  2. Profiles of Change: Lessons for Improving High School Physical Education

    Science.gov (United States)

    Doolittle, Sarah

    2014-01-01

    This feature has told stories of high school physical educators who have refused to accept the status quo of high school physical education programs. They have identified problems, initiated innovations in their own classes, implemented changes beyond their classes, and moved toward institutionalizing improvements throughout their programs and…

  3. Epidemiology of soccer-related injuries among male high school ...

    African Journals Online (AJOL)

    Soccer in Rwandan high schools can expose players to the risk of injury warranting prevention programmes. The aim of this study was to determine the type, causes, severity and management of injuries among high school soccer players in Rwanda, in order to obtain baseline data for injury prevention programmes.

  4. High School Psychology: A Coming of Age Story

    Science.gov (United States)

    Keith, Kenneth D.; Hammer, Elizabeth Yost; Blair-Broeker, Charles T.; Ernst, Randal M.

    2013-01-01

    Although institutional recognition of high school psychology is fairly recent, psychology and psychological subject matters have a history dating to at least the 1830s. By the middle of the twentieth century, high school psychology courses existed in nearly all U.S. states, and enrollments grew throughout the second half of the century. However,…

  5. Highly-Valued Reasons Muslim Caregivers Choose Evangelical Christian Schools

    Science.gov (United States)

    Rumbaugh, Andrew E.

    2009-01-01

    This study investigated what were the most highly-valued reasons among Muslim caregivers for sending their children to Lebanese evangelical Christian schools. Muslim caregivers (N = 1,403) from four Lebanese evangelical Christian schools responded to determine what were the most highly-valued reasons for sending their children to an evangelical…

  6. Building a Framework for Engineering Design Experiences in High School

    Science.gov (United States)

    Denson, Cameron D.; Lammi, Matthew

    2014-01-01

    In this article, Denson and Lammi put forth a conceptual framework that will help promote the successful infusion of engineering design experiences into high school settings. When considering a conceptual framework of engineering design in high school settings, it is important to consider the complex issue at hand. For the purposes of this…

  7. High School Students' Representations and Understandings of Electric Fields

    Science.gov (United States)

    Cao, Ying; Brizuela, Bárbara M.

    2016-01-01

    This study investigates the representations and understandings of electric fields expressed by Chinese high school students 15 to 16 years old who have not received high school level physics instruction. The physics education research literature has reported students' conceptions of electric fields post-instruction as indicated by students'…

  8. Adolescent alcohol use in rural South African high schools | Onya ...

    African Journals Online (AJOL)

    Objective: To examine psychosocial correlates of lifetime alcohol use among adolescents in rural South African high schools. Method: Questionnaires were administered to 1600 students from 20 randomly selected high schools in the Mankweng district within Limpopo province. Self-report data on alcohol use, demographic, ...

  9. Professional Identities of Vocational High School Students and Extracurricular Activities

    Science.gov (United States)

    Altan, Bilge Aslan; Altintas, Havva Ozge

    2017-01-01

    Vocational high schools are one of the controversial topics, and also the hardly touched fields in educational field. Students' profiles of vocational schools, their visions, and professional identity developments are not frequently reflected in the literature. Therefore, the main aim of the study is to research whether vocational high school…

  10. Creative Approaches to Teaching Shakespeare in High School.

    Science.gov (United States)

    Dienstfrey, Sherri R.

    William Shakespeare should be taught in high schools in an entertaining fashion so the high school student will appreciate his genius, keen insights, and talents. A strategy to accomplish this goal starts with simple material and progresses to the more difficult. Shakespeare's personal and historical background are presented in a short lecture,…

  11. The Method of High School English Word Learning

    Institute of Scientific and Technical Information of China (English)

    吴博涵

    2016-01-01

    Most Chinese students are not interested in English learning, especially English words. In this paper, I focus on English vocabulary learning, for example, the study of high school students English word learning method, and also introduce several ways to make vocabulary memory becomes more effective. The purpose is to make high school students grasp more English word learning skills.

  12. Financial Literacy of High School Students: Evidence from Germany

    Science.gov (United States)

    Erner, Carsten; Goedde-Menke, Michael; Oberste, Michael

    2016-01-01

    After graduating high school, underage individuals soon face ever more complex and important financial decisions. Pivotal to the development of improved financial literacy programs is a comprehensive examination of financial literacy levels and potentially related factors. The authors conducted a survey among German high school students and found…

  13. Examining Leisure Boredom in High School Students in Turkey

    Science.gov (United States)

    Akgul, Merve Beyza

    2015-01-01

    High school students who do not have leisure skills are more likely to be bored during leisure time. The aim of the study is to examine leisure boredom of high school students based on some variables (gender and income), and to investigate the relationship between leisure boredom, the presence/absence of anti-social behavior and the frequency at…

  14. Tanzanian High School students' attitude towards five University ...

    African Journals Online (AJOL)

    Objective: To determine the attitude of high school students majoring in Physics, Chemistry and Biology (PCB) towards Medicine, Pharmacy, Dentistry, Veterinary Medicine and Nursing as professions at university. Design: A cross sectional study of a representative sample of high school students using a pretested attitudinal ...

  15. Effects of Problem Based Economics on High School Economics Instruction

    Science.gov (United States)

    Finkelstein, Neal; Hanson, Thomas

    2011-01-01

    The primary purpose of this study is to assess student-level impacts of a problem-based instructional approach to high school economics. The curriculum approach examined here was designed to increase class participation and content knowledge for high school students who are learning economics. This study tests the effectiveness of Problem Based…

  16. Alberta High School, College Elevate Learning with Rare Joint Venture

    Science.gov (United States)

    Pearson, George

    2012-01-01

    The refusal by a group of parents in Olds, Alberta, in 2003 to accept a provincial grant to renovate their high school set in motion a remarkable collaboration that spawned an innovative learning campus for an entire community and beyond. The new Olds High School, which opened in 2010, is part of a new Community Learning Campus (CLC), a joint…

  17. CERN High School Teachers Training Programme meets DG

    CERN Multimedia

    Brice, Maximilien

    2014-01-01

    CERN's DG Rolf Heuer met with the participants of the High School Teachers Training Programme on 23 July 2014 for a Q&A Session. Following the interaction, he met with the HST Working Group collaborating on a lesson plan for teaching SESAME in high schools.

  18. Understanding How Domestic Violence Affects Behavior in High School Students

    Science.gov (United States)

    Frank, Malika

    2011-01-01

    This paper will provide the reader with an understanding of how domestic violence affects the behavior of high school students. The presentation is designed to provide the reader with a working definition of domestic violence, the rate of occurrence and its effects on high school students. Additionally the paper will summarize the negative effects…

  19. Perspectives on High School Reform. NCREL Viewpoints, Volume 13

    Science.gov (United States)

    Learning Point Associates / North Central Regional Educational Laboratory (NCREL), 2005

    2005-01-01

    Viewpoints is a multimedia package containing two audio CDs and a brief, informative booklet. This volume of Viewpoints focuses on issues related to high school reform. This booklet offers background information explaining the issues surrounding high school reform with perspectives from research, policy, and practice. It also provides a list of…

  20. Adjustment of High School Dropouts in Closed Religious Communities

    Science.gov (United States)

    Itzhaki, Yael; Itzhaky, Haya; Yablon, Yaacov B.

    2018-01-01

    Background: While extensive research has been done on high-school dropouts' adjustment, there is little data on dropouts from closed religious communities. Objective: This study examines the contribution of personal and social resources to the adjustment of high school dropouts in Ultraorthodox Jewish communities in Israel. Method: Using a…

  1. Indicating the Attitudes of High School Students to Environment

    Science.gov (United States)

    Ozkan, Recep

    2013-01-01

    Within this work in which it has been aimed to indicate the attitudes of High School Students to environment, indication of the attitudes of high school students in Nigde has been regarded as the problem matter. This analysis has the qualification of survey model and techniques of questionnaire and observation have been used. The investigation has…

  2. High School Leadership: The Challenge of Managing Resources and Competencies

    Science.gov (United States)

    Alsaaty, Falih M.; Morris, Archie, III

    2015-01-01

    High schools play a vital role in achieving and reflecting American ideals and culture. They provide the foundation for the country's economic, social, and political systems as well as the impetus for its scientific progress and technological superiority. The purpose of this study was to explore the challenges facing high schools' leadership in…

  3. The Coverage of the Holocaust in High School History Textbooks

    Science.gov (United States)

    Lindquist, David

    2009-01-01

    The Holocaust is now a regular part of high school history curricula throughout the United States and, as a result, coverage of the Holocaust has become a standard feature of high school textbooks. As with any major event, it is important for textbooks to provide a rigorously accurate and valid historical account. In dealing with the Holocaust,…

  4. Predictors of Behavior Factors of High School Students against Recycling

    Science.gov (United States)

    Cimen, Osman; Yilmaz, Mehmet

    2016-01-01

    This study aims to determine the variables that predict high school students' recycling behaviors. The study was designed as survey model. The study's sample consists of 203 students at a high school in Ankara. A recycling behavior scale developed by the researchers was used as a data collection tool. The scale has 3 dimensions: recycling…

  5. The Effect of Minimum Wage Rates on High School Completion

    Science.gov (United States)

    Warren, John Robert; Hamrock, Caitlin

    2010-01-01

    Does increasing the minimum wage reduce the high school completion rate? Previous research has suffered from (1. narrow time horizons, (2. potentially inadequate measures of states' high school completion rates, and (3. potentially inadequate measures of minimum wage rates. Overcoming each of these limitations, we analyze the impact of changes in…

  6. Effective Instructional Management: Perceptions and Recommendations from High School Administrators

    Science.gov (United States)

    Knechtel, Troy

    2010-01-01

    The two overarching research questions of this study are: What are the perceptions of high school administrators regarding the effectiveness of their current approach to instructional management? What recommendations do high school administrators have for effective strategies for instructional management? To answer these questions, a qualitative…

  7. Gender Differences in High School Students' Interests in Physics

    Science.gov (United States)

    Baran, Medine

    2016-01-01

    The aim of this research was to determine the interests of high school students in Physics and variable of how the influential factors on their interests depending on gender. The research sample included 154 (F:78 M:76) high school students. A structured interview form was used as the data collection tool in the study. The research data were…

  8. High School Science Teachers' Views on Science Process Skills

    Science.gov (United States)

    Gultepe, Nejla

    2016-01-01

    The current research is a descriptive study in which a survey model was used. The research involved chemistry (n = 26), physics (n = 27), and biology (n = 29) teachers working in Science High Schools and Anatolian High Schools in Turkey. An inventory that consisted of seven questions was designed to ascertain what teachers' think about the…

  9. Analyzing High School Students' Reasoning about Electromagnetic Induction

    Science.gov (United States)

    Jelicic, Katarina; Planinic, Maja; Planinsic, Gorazd

    2017-01-01

    Electromagnetic induction is an important, yet complex, physics topic that is a part of Croatian high school curriculum. Nine Croatian high school students of different abilities in physics were interviewed using six demonstration experiments from electromagnetism (three of them concerned the topic of electromagnetic induction). Students were…

  10. Intertextuality in Chinese High School Students' Essay Writing

    Science.gov (United States)

    Liddicoat, Anthony J.; Scrimgeour, Andrew; Chen, Toni

    2008-01-01

    This paper investigates the intertextual practices developed for writing in Chinese of high school students in Taiwan. On the basis of texts written by Chinese high school students, we investigate these practices within their own cultural context to develop an understanding of intertextual practices into which Chinese learners are socialised. We…

  11. Relationship between High School Students' Facebook Addiction and Loneliness Status

    Science.gov (United States)

    Karakose, Turgut; Yirci, Ramazan; Uygun, Harun; Ozdemir, Tuncay Yavuz

    2016-01-01

    This study was conducted in order to analyze the relation between high school students' Facebook addiction and loneliness levels. The study was conducted with the relational screening model. The sample of the study consists of 712 randomly selected high school students. The data was collected using the Bergen Facebook Addiction Scale (BFAS) to…

  12. Organ and tissue donation: what do high school students know?

    Directory of Open Access Journals (Sweden)

    Marcela Cristina de Lemos

    2007-09-01

    Full Text Available Objectives: To know the opinion of senior high school students in publicand private schools on the process of donating and transplanting organsand tissues, and their desire to be donors. Methods: A descriptive crosssectionalstudy, conducted from 2004 to 2005, on the opinion/knowledgeof senior high school students in public and private schools in the VilaMariana region of the city of São Paulo, on the process of organ and tissuedonation and transplantation. The convenience sample was made up of140 (81% students from two private schools and 167 (51% studentsfrom a public school. The project was approved by the Research EthicsCommittee of the UNIFESP. Results: Data showed that 163 (53.1%students believe that donation is by presumed consent and 147 (47.9%that consider that it occurs by informed consent. Of the public schoolstudents, 120 (71.9% believe that transplants are public and free ofcharge in Brazil versus 94 (67.1% of the students from private schools.Students know that donations may be made by living or dead donors(121 - 86.4% private schools versus 113 – 67.7% public school. Wehighlight that 22 (15.7% of the private school students and 16 (9.6%of those from the public school believe that the commerce of organs isallowed in Brazil. As to intentions of being a donor, 108 (77.1% of theprivate school students declared themselves organ and tissue donorsversus 106 (63.5% from the public school, and 63 (59.4% from thepublic versus 61 (56.5% from the private schools have already informedtheir families. Conclusion: There was no difference in knowledge andopinion among the students from the public and private schools as toaspects regarding donation and transplantation.

  13. Injuries at Johannesburg high school rugby festivals

    African Journals Online (AJOL)

    1 Centre for Exercise Science and Sports Medicine, School of Therapeutic Sciences, Faculty of Health Sciences ... withdrawal from play at time of injury and management. ..... 2011 South African Rugby Union (SARU) Youth Week tournaments.

  14. Successful three-way kidney paired donation with cross-country live donor allograft transport.

    Science.gov (United States)

    Montgomery, R A; Katznelson, S; Bry, W I; Zachary, A A; Houp, J; Hiller, J M; Shridharani, S; John, D; Singer, A L; Segev, D L

    2008-10-01

    Providing transplantation opportunities for patients with incompatible live donors through kidney paired donation (KPD) is seen as one of the important strategies for easing the crisis in organ availability. It has been estimated that an additional 1000-2000 transplants per year could be accomplished if a national KPD program were implemented in the United States. While most of these transplants could be arranged within the participants' local or regional area, patients with hard-to-match blood types or broad HLA sensitization would benefit from matching across larger geographic areas. In this case, either patients or organs would need to travel in order to obtain maximum benefit from a national program. In this study, we describe how a triple KPD enabled a highly sensitized patient (PRA 96%) to receive a well-matched kidney from a live donor on the opposite coast. The kidney was removed in San Francisco and transported to Baltimore where it was reperfused 8 h later. The patient had prompt function and 1 year later has a serum creatinine of 1.1 mg/dl. This case provides a blueprint for solving some of the complexities that are inherent in the implementation of a national KPD program in a large country like the United States.

  15. The influence of tyre characteristics on measures of rolling performance during cross-country mountain biking.

    Science.gov (United States)

    Macdermid, Paul William; Fink, Philip W; Stannard, Stephen R

    2015-01-01

    This investigation sets out to assess the effect of five different models of mountain bike tyre on rolling performance over hard-pack mud. Independent characteristics included total weight, volume, tread surface area and tread depth. One male cyclist performed multiple (30) trials of a deceleration field test to assess reliability. Further tests performed on a separate occasion included multiple (15) trials of the deceleration test and six fixed power output hill climb tests for each tyre. The deceleration test proved to be reliable as a means of assessing rolling performance via differences in initial and final speed (coefficient of variation (CV) = 4.52%). Overall differences between tyre performance for both deceleration test (P = 0.014) and hill climb (P = 0.032) were found, enabling significant (P < 0.0001 and P = 0.049) models to be generated, allowing tyre performance prediction based on tyre characteristics. The ideal tyre for rolling and climbing performance on hard-pack surfaces would be to decrease tyre weight by way of reductions in tread surface area and tread depth while keeping volume high.

  16. Implementing Cardiopulmonary Resuscitation Training Programs in High Schools: Iowa's Experience.

    Science.gov (United States)

    Hoyme, Derek B; Atkins, Dianne L

    2017-02-01

    To understand perceived barriers to providing cardiopulmonary resuscitation (CPR) education, implementation processes, and practices in high schools. Iowa has required CPR as a graduation requirement since 2011 as an unfunded mandate. A cross-sectional study was performed through multiple choice surveys sent to Iowa high schools to collect data about school demographics, details of CPR programs, cost, logistics, and barriers to implementation, as well as automated external defibrillator training and availability. Eighty-four schools responded (26%), with the most frequently reported school size of 100-500 students and faculty size of 25-50. When the law took effect, 51% of schools had training programs already in place; at the time of the study, 96% had successfully implemented CPR training. Perceived barriers to implementation were staffing, time commitment, equipment availability, and cost. The average estimated startup cost was $1000 US, and the yearly maintenance cost was <$500 with funds typically allocated from existing school resources. The facilitator was a school official or volunteer for 81% of schools. Average estimated training time commitment per student was <2 hours. Automated external defibrillators are available in 98% of schools, and 61% include automated external defibrillator training in their curriculum. Despite perceived barriers, school CPR training programs can be implemented with reasonable resource and time allocations. Copyright © 2016 Elsevier Inc. All rights reserved.

  17. Availability of Automated External Defibrillators in Public High Schools.

    Science.gov (United States)

    White, Michelle J; Loccoh, Emefah C; Goble, Monica M; Yu, Sunkyung; Duquette, Deb; Davis, Matthew M; Odetola, Folafoluwa O; Russell, Mark W

    2016-05-01

    To assess automated external defibrillator (AED) distribution and cardiac emergency preparedness in Michigan secondary schools and investigate for association with school sociodemographic characteristics. Surveys were sent via electronic mail to representatives from all public high schools in 30 randomly selected Michigan counties, stratified by population. Association of AED-related factors with school sociodemographic characteristics were evaluated using Wilcoxon rank sum test and χ(2) test, as appropriate. Of 188 schools, 133 (71%) responded to the survey and all had AEDs. Larger student population was associated with fewer AEDs per 100 students (P schools. Schools with >20% students from racial minority groups had significantly fewer AEDs available per 100 students than schools with less racial diversity (P = .03). Schools with more students eligible for free and reduced lunch were less likely to have a cardiac emergency response plan (P = .02) and demonstrated less frequent AED maintenance (P = .03). Although AEDs are available at public high schools across Michigan, the number of AEDs per student varies inversely with minority student population and school size. Unequal distribution of AEDs and lack of cardiac emergency preparedness may contribute to outcomes of sudden cardiac arrest among youth. Copyright © 2016 Elsevier Inc. All rights reserved.

  18. Highlighting High Performance: Clearview Elementary School, Hanover, Pennsylvania

    Energy Technology Data Exchange (ETDEWEB)

    2002-08-01

    Case study on high performance building features of Clearview Elementary School in Hanover, Pennsylvania. Clearview Elementary School in Hanover, Pennsylvania, is filled with natural light, not only in classrooms but also in unexpected, and traditionally dark, places like stairwells and hallways. The result is enhanced learning. Recent scientific studies conducted by the California Board for Energy Efficiency, involving 21,000 students, show test scores were 15% to 26% higher in classrooms with daylighting. Clearview's ventilation system also helps students and teachers stay healthy, alert, and focused on learning. The school's superior learning environment comes with annual average energy savings of about 40% over a conventional school. For example, with so much daylight, the school requires about a third less energy for electric lighting than a typical school. The school's innovative geothermal heating and cooling system uses the constant temperature of the Earth to cool and heat the building. The building and landscape designs work together to enhance solar heating in the winter, summer cooling, and daylighting all year long. Students and teachers have the opportunity to learn about high-performance design by studying their own school. At Clearview, the Hanover Public School District has shown that designing a school to save energy is affordable. Even with its many innovative features, the school's $6.35 million price tag is just $150,000 higher than average for elementary schools in Pennsylvania. Projected annual energy cost savings of approximately $18,000 mean a payback in 9 years. Reasonable construction costs demonstrate that other school districts can build schools that conserve energy, protect natural resources, and provide the educational and health benefits that come with high-performance buildings.

  19. A longitudinal study of school belonging and academic motivation across high school.

    Science.gov (United States)

    Neel, Cari Gillen-O'; Fuligni, Andrew

    2013-01-01

    This longitudinal study examined how school belonging changes over the years of high school, and how it is associated with academic achievement and motivation. Students from Latin American, Asian, and European backgrounds participated (N = 572; age span = 13.94-19.15 years). In ninth grade, girls' school belonging was higher than boys'. Over the course of high school, however, girls' school belonging declined, whereas boys' remained stable. Within-person longitudinal analyses indicated that years in which students had higher school belonging were also years in which they felt that school was more enjoyable and more useful, above and beyond their actual level of achievement. Results highlight the importance of belonging for maintaining students' academic engagement during the teenage years. © 2012 The Authors. Child Development © 2012 Society for Research in Child Development, Inc.

  20. Is urbanization eco-friendly? An energy and land use cross-country analysis

    International Nuclear Information System (INIS)

    Long, X.; Ji, Xi; Ulgiati, S.

    2017-01-01

    Urbanization imposes complicated and heterogeneous impacts on ecosystems. With the purpose of reflecting the comprehensive influence of urbanization on the ecosystem, we choose the ecological footprint to represent the ecosystem's integrated change and distinguish low-income, middle-income and high-income countries to reflect the nonlinear impact. This paper uses both static and dynamic STIRPAT (Stochastic Impacts by Regression on Population, Affluence and Technology) models to analyze 72 countries at different income levels during the 1980–2008 period. The results show that the overall ecological elasticity of urbanization at the global level is negative. Specifically, results suggest urbanization, associated to increased income, to have eco-friendly potential in terms of decreased ecological footprint. To explain such results, this paper answers two questions: Why does urbanization show ecological protection effects? Why does a more pronounced protection effect seem associated to increased income levels? Improved market mechanism, increased resource use efficiency as well as increased environmental awareness in urban areas associated to increased income levels are likely to support an eco-friendly urbanization process. Burden-shift to low-income countries also needs to be taken into account, in order to avoid policies that increase wellbeing locally at the expenses of far-away areas. - Highlights: • Ecological effects of urbanization are estimated. • Ecological footprint is used to represent the integrated change related to energy and land use. • Static and dynamic STIRPAT models are employed for regression. • The reasons for the ecological protection effect of urbanization are analyzed. • The heterogeneity of urban structure and function across income levels is discussed.