Ecce Homo Sexual: Ontology and Eros in the Age of Incompleteness and Entanglement     

Johnny Golding 《Parallax》2014,20(3):217-230

  相似文献   

A control group outcome study of a nonexclusionary time‐out package to improve social skills with preschoolers     

Virginia E. Fee  Johnny L. Matson  Ramasamy Manikam 《Exceptionality》2013,21(2):107-121

Abstract

Teachers used a nonexclusionary time‐out package to treat inappropriate social behaviors that interfered with instructional tasks in four classrooms of preschool children, each containing an average of 16 students. We yoked classrooms on pretreatment scores of target behaviors and randomly assigned them to a time‐out ribbon plus praise or control condition. Students in the treatment condition wore wristbands with attached smiling face stickers and received praise from teachers for taking turns talking and remaining seated during group activities. Contingent on disruptive behavior, teachers removed the wristbands signaling a three‐minute time‐out period in which teachers restricted praise and attention but ongoing participation in activities continued. Multiple measures of treatment outcome were analyzed via MANCOVA and ANCOVAs. Behavior improved on direct observations of target behavior, the Preschool Behavior Questionnaire (PBQ) and items on a semantic differential, but not the Matson Evaluation of Social Skills with Youngsters. Treatment acceptability also supported treatment effects. We discuss implications of these results.  相似文献   

Hell on Wheels: The Outlaw Motorcycle Gangs     

Columbus B. Hopper  Johnny Moore 《Journal of American culture (Malden, Mass. : 2003)》1983,6(2):58-64

  相似文献   

TUT and TABU transitional filters     

Johnny R. Johnson  David E. Johnson  Ronald J. Lacarna 《Journal of The Franklin Institute》1979,307(3):175-182

Transitional XY filters (TXY) are considered with characteristics that vary smoothly from those of filter X to those of filter Y as a parameter is varied continuously. Emphasis is placed on transitional ultraspherical—Thomson (TUT) filters and transitional ultraspherical “a”-ultraspherical “b” (TABU) filters.  相似文献   

Pole length and ground reaction forces during maximal double poling in skiing   总被引：1，自引：0，他引：1  

Nilsson J  Jakobsen V  Tveit P  Eikrehagen O 《Sports biomechanics / International Society of Biomechanics in Sports》2003,2(2):227-236

The purpose of the investigation was to study the relationship between thrust phase duration, ground reaction force, velocity increase after pole thrust and pole angles versus pole length during double poling in roller skiing. Seven male regional elite cross-country skiers volunteered as subjects for the study. The subjects performed a maximal double pole thrust on roller skis with each of the three different pole lengths: 'short', self-selected (normal) and 'long'. The short and long poles were 7.5 cm shorter and 7.5 cm longer than the self-selected pole length. The subjects made seven maximal pole thrusts with each pole length, which were randomly selected during 21 trials. For each trial the subjects accelerated from a 1.2 m high downhill slope attaining a speed of 3.92 m.s-1 before making a maximal double pole thrust on a force plate placed at the bottom of the slope. The vertical (F2), anterior-posterior (Fy) and mediolateral (Fx) reaction forces of the left pole were measured by the force plate. The positions of the pole were recorded in 3-D by an opto-electronic system. Thrust phase duration, impulse, mean force, velocity increase after pole thrust and pole angles were calculated from the recorded data. Double poling with long poles produced a significantly larger propulsive anterior-posterior reaction force impulse and velocity increase than normal (p < .05) and short poles (p < .05). This was in spite of a larger mean anterior-posterior reaction force being produced with short poles. Thus, thrust phase duration was a primary factor in determining propulsive anterior-posterior impulse. For the practitioner, the results can be useful in the selection of pole length when the aim is to increase thrust phase duration, anterior-posterior force impulse and velocity.  相似文献   

Simulated Sustainable Societies: Students’ Reflections on Creating Future Cities in Computer Games   总被引：1，自引：1，他引：0  

Elisabet M. Nilsson  Anders Jakobsson 《Journal of Science Education and Technology》2011,20(1):33-50

The empirical study, in this article, involved 42 students (ages 14–15), who used the urban simulation computer game SimCity 4 to create models of sustainable future cities. The aim was to explore in what ways the simulated “real” worlds provided by this game could be a potential facilitator for science learning contexts. The topic investigated is in what way interactions in this gaming environment, and reflections about these interactions, can form a context where the students deal with real world problems, and where they can contextualise and apply their scientific knowledge. Focus group interviews and video recordings were used to gather data on students’ reflections on their cities, and on sustainable development. The findings indicate that SimCity 4 actually contributes to creating meaningful educational situations in science classrooms, and that computer games can constitute an important artefact that may facilitate contextualisation and make students’ use of science concepts and theories more explicit.  相似文献   

Cross‐Country Skiing     

Johnny Nilsson  Per Tveit  Olav Eikrehagen 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(1):85-108

The purpose was to study the adaptation to speed in the temporal patterns of the movement cycle and determine any differences in velocity, cycle rate and cycle length at the maximum speed level in the different classical style and freestyle cross‐country skiing techniques. Eight skilled male cross‐country skiers were filmed with a digital video camera in the sagittal plane while skiing on a flat cross‐country ski track. The skiers performed three classical style techniques the diagonal stride, kick double poling and the double poling technique and four freestyle techniques paddle dance (gear 2), double dance (gear 3), single dance (gear 4) and combiskate (gear 5) at four different self‐selected speed levels slow, medium, fast and their maximum. Cycle duration, cycle rate, cycle length, and relative and absolute cycle phase duration of the different techniques at the different speed levels were analysed by means of a video analysis system. The cycle rate in all tested classical and freestyle techniques was found to increase significantly (p < .01) with speed from slow to maximum. Simultaneously, there was a significant decrease in the absolute phase durations of all the investigated skiing techniques. A minor, not significant, change in cycle length, and the significant increase in cycle rate with speed showed that the classical and freestyle cross‐country skiing styles are dependent, to a large extent, on an increase in cycle rate for speed adaptation. A striking finding was the constant relative phase duration with speed, which indicates a simplified neural control of the speed adaptation in both cross‐country skiing styles. For the practitioner, the knowledge about the importance of increasing cycle frequency rather than cycle length in the speed adaptation can be used to optimise a rapid increase in speed. The knowledge about the decrease in absolute phase duration, especially the thrust phase duration, points to the need for strength and technique training to enable force production at a high cycle rate and skiing speed. The knowledge that the relative phase duration stays constant with speed may be used to simplify the learning of the different cross‐country skiing techniques.  相似文献   

Knee angular displacement and extensor muscle activity in telemark skiing and in ski-specific strength exercises     

Johnny Nilsson  Per Haugen 《Journal of sports sciences》2013,31(4):357-364

Much of the training of competitive telemark skiers is performed as dry-land exercises. The specificity of these exercises is important for optimizing the training effect. Our aim here was to study the activation of the knee extensor musculature and knee angular displacement during competitive telemark skiing and during dry-land strength training exercises to determine the specificity of the latter. Specificity was analysed with respect to angular amplitude, angular velocity, muscle action and electromyographic (EMG) activity. Five male telemark skiers of national and international standard volunteered to participate in the study, which consisted of two parts: (1) skiing a telemark ski course and (2) specific dry-land strength training exercises for telemark skiing (telemark jumps and barbell squats). The angular displacement of the right knee joint was recorded with an electrogoniometer. A tape pressure sensor was used to measure pressure between the sole of the foot and the bottom of the right ski boot. Electromyographic activity in the right vastus lateralis was recorded with surface electrodes. The EMG activity recorded during maximum countermovement jumps was used to normalize the EMG activity during telemark skiing, telemark jumps and barbell squats. The results showed that knee angular displacement during telemark skiing and dry-land telemark jumps had four distinct phases: a flexion (F1) and extension (E1) phase during the thrust phase of the outside ski/leg in the turn/jump and a flexion (F2) and extension (E2) phase when the leg was on the inside of the turn/jump. The vastus lateralis muscle was activated during F1 and E1 in the thrust phase during telemark skiing and telemark jumps. The overall net knee angular amplitude was significantly greater (P<0.05) for telemark jumps than for telemark skiing. Barbell squats showed a knee angular amplitude significantly greater than that in telemark skiing (P<0.05). The mean knee angular velocity of the F1 and E1 phases during telemark skiing was about 0.47 rad?·?s^?1; during barbell squats, it was about 1.22 rad?·?s^?1. The angular velocity during telemark jumps was 2.34 and 1.59 rad?·?s^?1 in the F1 and E1 phase, respectively. The normalized activation level of the EMG bursts during telemark skiing, telemark jumps and barbell squats was 70–80%. In conclusion, the muscle action and level of activation in the vastus lateralis during the F1 and E1 phases were similar during telemark skiing and dry-land exercises. However, the dry-land exercises showed a larger knee extension and flexion amplitude and angular velocity compared with telemark skiing. It appears that an adjustment of knee angular velocity during barbell squats and an adjustment of knee angle amplitude during both telemark jumps and barbell squats will improve specificity during training.  相似文献   

Drive for dough. PGA Tour golfers’ tee shot functional accuracy,distance and hole score     

John Hellström  Johnny Nilsson  Leif Isberg 《Journal of sports sciences》2013,31(5):462-469

Abstract

A player’s ability to score low is critical to the tournament outcome in golf. The relationships of round scores to fairways hit in regulation or striking distance on two holes per round have been investigated before with some disagreement. The purpose is therefore to examine the relationships of par-4 and par-5 hole scores to tee shot functional accuracy and distance, measured as lie of the ball and penalty, and striking distance or distance to the pin for the second shot. Such information is possible to collect without interviewing players. The best US Professional Golfers’ Association Tour players’ statistics during a season are used, provided by the Professional Golfers’ Association Tour and ShotLink. Distance was measured with laser equipment. The results include significant (P < 0.05) correlations between score and striking distance or distance to pin, when hitting rough but not fairway on par-4s and when hitting fairway and rough on par-5s. It is therefore relevant, for performance, to consider the type of fairway miss as well as the striking distance in relation to the par and length of the hole. The findings can be considered when making gap and needs profiles, and when making tactical decisions for tee shots on different types of holes.  相似文献   

The Relationships Among Perfectionism,Acculturation, and Stress in Asian International Students     

Johanna E. Nilsson  Jenay Butler  Sarah Shouse  Chetan Joshi 《Journal of College Counseling》2008,11(2):147-158

This study examined relationships among perfectionism, acculturation, and stress in 76 Asian international students. Results showed that perfectionism and acculturation predicted stress, together accounting for 50% of the variance in stress. Furthermore, acculturation explained students' experience of stress above and beyond perfectionism, and 1 specific acculturation variable examined, perceived prejudice, revealed the strongest relationship with stress. Implications for providing counseling services to international students and for future research are described.  相似文献