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1

Ignition and Growth Modeling of LX-17 Hockey Puck Experiments  

SciTech Connect

Detonating solid plastic bonded explosives (PBX) formulated with the insensitive molecule triaminotrinitrobenzene (TATB) exhibit measurable reaction zone lengths, curved shock fronts, and regions of failing chemical reaction at abrupt changes in the charge geometry. A recent set of ''hockey puck'' experiments measured the breakout times of diverging detonation waves in ambient temperature LX-17 (92.5 % TATB plus 7.5% Kel-F binder) and the breakout times at the lower surfaces of 15 mm thick LX-17 discs placed below the detonator-booster plane. The LX-17 detonation waves in these discs grow outward from the initial wave leaving regions of unreacted or partially reacted TATB in the corners of these charges. This new experimental data is accurately simulated for the first time using the Ignition and Growth reactive flow model for LX-17, which is normalized to a great deal of detonation reaction zone, failure diameter and diverging detonation data. A pressure cubed dependence for the main growth of reaction rate yields excellent agreement with experiment, while a pressure squared rate diverges too quickly and a pressure quadrupled rate diverges too slowly in the LX-17 below the booster equatorial plane.

Tarver, C M

2004-04-19

2

The Impact of Puck Possession and Location on Ice Hockey Strategy  

Microsoft Academic Search

I create a state space within the game of ice hockey by noting which team has possession, and in what location of the rink the puck is located. This space is used to model the game as a semi-Markov process, as data from a series of games in 2004-2005 NCAA play suggest that the system cannot be modeled as a

Andrew C. Thomas

2006-01-01

3

The Puck Stops Here  

NSDL National Science Digital Library

After learning about the concept of transfer of energy, specifically the loss of kinetic energy to friction, students get a chance to test friction. Student groups are each given a wooden block and different fabrics and weights and challenged to design the "best" puck. First the class defines what makes the "best" puck. They come to realize that the most desirable puck is the one that travels the farthest, thus the puck with the least amount of friction. In the context of hockey, the "best" puck is the one that travels farthest and loses the least kinetic energy to friction. Students then apply their knowledge of friction—the energy transfer from kinetic to heat energy—to design new, optimal pucks for the National Hockey League.

Engineering K-PhD Program,

4

Multiple shock initiation of LX17  

Microsoft Academic Search

The response of the insensitive TATB-based high explosive LX-17 to multiple shock impacts is studied experimentally in a four inch gas gun using embedded manganin gauges and numerically using the ignition and growth reactive flow model of shock initiation and detonation. Pressure histories are reported for LX-17 cylinders which are subjected to sustained shock pulses followed by secondary compressions from

C. M. Tarver; T. M. Cook; P. A. Urtiew; W. C. Tao

1993-01-01

5

Multiple shock initiation of LX-17  

SciTech Connect

The response of the insensitive TATB-based high explosive LX-17 to multiple shock impacts is studied experimentally in a four inch gas gun using embedded manganin gauges and numerically using the ignition and growth reactive flow model of shock initiation and detonation. Pressure histories are reported for LX-17 cylinders which are subjected to sustained shock pulses followed by secondary compressions from shocks reflected from metal discs attached to the backs of the explosive targets. These measured and calculated pressure histories show that the threshold for hot spot growth in LX-17 is 7 GPa, that LX-17 can be dead pressed at slightly lower pressures, and that the reaction rates behind reflected shocks increase greatly as the impedance of the metal increases. A study of the response of LX-17 to the collision of two reacting, diverging shocks forming a Mach stem wave inside the LX-17 charge demonstrated that this interaction can result in a high pressure region of sufficient size and strength to cause detonation under certain conditions.

Tarver, C.M.; Cook, T.M.; Urtiew, P.A.; Tao, W.C.

1993-07-01

6

Evaluation of LX-17 made from water-aminated TATB  

SciTech Connect

Water-aminated TATB was formulated into LX-17 at both Pantex and Holston. Mechanical properties, growth, pressed density, corner turning and gap sensitivity properties were compared. Mechanical properties, corner turning and gap sensitivity were similar to those of LX-17 made from dry-aminated TATB. Permanent expansion resulting from thermal aging may be slightly greater than that of LX-17 with dry-aminated TATB.

Osborn, A.G.

1982-10-01

7

Air Gap Effects in LX-17  

SciTech Connect

Three experiments done over twenty years on gaps in LX-17 are reported. For the detonation front moving parallel to the gaps, jets of gas products were seen coming from the gaps at velocities greater than the detonation velocity. A case can be made that the jet velocity increased with gap thickness but the data is scattered. For the detonation front moving transverse to the gap, time delays were seen. The delays roughly increase with gap width, going from 0-70 ns at 'zero gap' to around 300 ns at 0.5-1 mm gap. Larger gaps of up to 6 mm width almost certainly stopped the detonation, but this was not proved. Real-time resolution of the parallel jets and determination of the actual re-detonation or failure in the transverse case needs to be done in future experiments.

Souers, P C; Ault, S; Avara, R; Bahl, K L; Boat, R; Cunningham, B; Gidding, D; Janzen, J; Kuklo, D; Lee, R; Lauderbach, L; Weingart, W C; Wu, B; Winer, K

2005-09-26

8

LX-17 and ufTATB Data for Corner-Turning, Failure and Detonation  

SciTech Connect

Data is presented for the size (diameter) effect for ambient and cold confined LX-17, unconfined ambient LX-17, and confined ambient ultrafine TATB. Ambient, cold and hot double cylinder corner-turning data for LX-17, PBX 9502 and ufTATB is presented. Transverse air gap crossing in ambient LX-17 is studied with time delays given for detonations that cross.

Souers, P C; Lauderbach, L; Garza, R; Vitello, P; Hare, D E

2010-02-03

9

LX-17 Deflagration at High Pressures and Temperatures  

SciTech Connect

We measure the laminar deflagration rate of LX-17 (92.5 wt% TATB, 7.5 wt% Kel-F 800) at high pressure and temperature in a strand burner, thereby obtaining reaction rate data for prediction of thermal explosion violence. Simultaneous measurements of flame front time-of-arrival and temporal pressure history allow for the direct calculation of deflagration rate as a function of pressure. Additionally, deflagrating surface areas are calculated in order to provide quantitative insight into the dynamic surface structure during deflagration and its relationship to explosion violence. Deflagration rate data show that LX-17 burns in a smooth fashion at ambient temperature and is represented by the burn rate equation B = 0.2P{sup 0.9}. At 225 C, deflagration is more rapid and erratic. Dynamic deflagrating surface area calculations show that ambient temperature LX-17 deflagrating surface areas remain near unity over the pressure range studied.

Koerner, J; Maienschein, J; Black, K; DeHaven, M; Wardell, J

2006-10-23

10

Mechanical modeling of the plastic bonded explosive LX17  

E-print Network

The current research attempts to develop a model for a polycrystalline, composite solid with viscoelastic matrix known as LX17. It is a highly-filled plastic bonded explosive with a shelf-life of up to 50 years. Experimentation is too costly...

Clayton, Kyle Martin

2012-06-07

11

Dead Zones in LX-17 and PBX 9502  

SciTech Connect

Pin and X-ray corner-turning data have been taken on ambient LX-17 and PBX 9052, and the results are listed in tables as an aid to future modeling. The results have been modeled at 4 zones/mm with a reactive flow approach that varies the burn rate as a function of pressure. A single rate format is used to simulate failure and detonation in different pressure regimes. A pressure cut-off must also be reached to initiate the burn. Corner-turning and failure are modeled using an intermediate pressure rate region, and detonation occurs at high pressure. The TATB booster is also modeled using reactive flow, and X-ray tomography is used to partition the ram-pressed hemisphere into five different density regions. The model reasonably fits the bare corner-turning experiment but predicts a smaller dead zone with steel confinement, in contradiction with experiment. The same model also calculates the confined and unconfined cylinder detonation velocities and predicts the failure of the unconfined cylinder at 3.75 mm radius. The PBX 9502 shows a smaller dead zone than LX-17. An old experiment that showed a large apparent dead zone in Comp B was repeated with X-ray transmission and no dead zone was seen. This confirms the idea that a variable burn rate is the key to modeling. The model also produces initiation delays, which are shorter than those found in time-to-detonation.

Souers, P C; Andreski, H G; Batteux, J; Bratton, B; Cabacungan, C; Cook, III, C F; Fletcher, S; Garza, R; Grimsley, D; Handly, J; Hernandez, A; McMaster, P; Molitoris, J D; Palmer, R; Prindiville, J; Rodriguez, J; Schneberk, D; Wong, B; Vitello, P

2005-09-06

12

The Science of Hockey  

NSDL National Science Digital Library

This site is a Sports Science resource where users read about National Hockey League players, coaches from the San Jose Sharks, and physicists and chemists. Included is information about ice, the qualities that make it a unique playing surface, why ice is slippery, mechanics of ice skating, hockey equipment, NHL goals, how players can shoot the puck over one hundred miles an hour, checking using physical force, and physical fitness. Links to other sites and mathematics formulas that show how much energy is expended in an open ice hit can also be found.

Spadaccini, Jim

2004-01-01

13

LX-17 Corner-Turning and Reactive Flow Failure  

SciTech Connect

We have performed a series of highly-instrumented experiments examining corner-turning of detonation. A TATB booster is inset 15 mm into LX-17 (92.5% TATB, 7.5% kel-F) so that the detonation must turn a right angle around an air well. An optical pin located at the edge of the TATB gives the start time of the corner-turn. The breakout time on the side and back edges is measured with streak cameras. Three high-resolution X-ray images were taken on each experiment to examine the details of the detonation. We have concluded that the detonation cannot turn the corner and subsequently fails, but the shock wave continues to propagate in the unreacted explosive, leaving behind a dead zone. The detonation front farther out from the corner slowly turns and eventually reaches the air well edge 180{sup o} from its original direction. The dead zone is stable and persists 7.7 {micro}s after the corner-turn, although it has drifted into the original air well area. Our regular reactive flow computer models sometimes show temporary failure but they recover quickly and are unable to model the dead zones. We present a failure model that cuts off the reaction rate below certain detonation velocities and reproduces the qualitative features of the corner-turning failure.

Souers, P C; Andreski, H; Cook III, C F; Garza, R; Pastrone, R; Phillips, D; Roeske, F; Vitello, P; Molitoris, J

2004-03-11

14

First-Generation Jet Propulsion Laboratory "Hockey-Puck" Free-Flying Magnetometers for Distributed In-Situ Multiprobe Measurement of Current Density Filamentation in the Northern Auroral Zone: Enstrophy Mission  

NASA Technical Reports Server (NTRS)

The sub-orbital rocket mission was a collaborative project between the University of New Hampshire, Cornell University, and the Jet Propulsion Laboratory (JPL) to study filamentation phenomena in the northern Auroral zone. The Enstrophy mission test flies the JPL Free-Flying Magnetometer (FFM) concept. The FFM technology development task has been funded by NASA develop miniaturized, low-power, integrated "sensorcrafts". JPL's role was to design, integrate, test, and deliver four FFMs for deployment from the sounding rocket, allowing a unique determination of curl-B. This provides a direct measurement of magnetic-field-aligned current density along the rocket trajectory. A miniaturized three-axis fluxgate magnetometer was integrated with a 4-channel 22-bit sigma-delta Analog to Digital Converter (ADC), four temperature sensors, digital control electronics, seven (Li-SOCl2) batteries, two (4 deg x 170 deg field of view) sun-sensors, a fan-shaped-beam laser diode beacon, a (16 MHz) stable Temperature Compensated Crystal Oscillator (TCXO) clock, Radio Frequency (RF) communication subsystem, and an antenna for approximately 15 minutes of operation where data was collected continuously and transmitted in three (3) bursts (approximately 26 seconds each) to ground station antennas at Poker Flat, Alaska. FFMs were stowed within two trays onboard the rocket during the rocket launch and were released simultaneously using the spinning action of the rocket at approximately 300 km altitude (approximately 100 sec. into the flight). FFMs were deployed with spin rate of approximately 17 Hz and approximately 3 m/sec linear velocity with respect to the rocket. For testing purposes while the rocket was in the launch pad and during flight prior to release of FFMs from the rocket, commands (such as "power on", "test", "flight", "power off', and clock "Reset" signal) were transmitted via a infrared Light Emitting Diode to an infrared detector in the FFM. Special attention was paid to low magnetic signature electronic design and choice of materials in packaging. The miniaturized fluxgate magnetometers had a range of 1-60000 nT with 0.1% full-scale linearity. The frequency range of interest for magnetic measurement was 10 mHz - 50 Hz. Digital data from the magnetometer's three axes were placed in a 4MB Static Random Access Memory (SRAM) in data packages (frames) formatted together with time tags and frame ID. After a specified time was elapsed, the data were Viterbi encoded and transmitted at a rate of 100 kbps (BPSK). Each of the four FFMs transmitted at different frequency. These carrier frequencies were in the range of 2200-2300 MHz. The antenna was a single patch on a high dielectric constant substrate covering one end-plate of the hockey-puck-sized unit. The local clocks aboard the FFMs were reset at the start of the mission and stayed synchronized within 3 msec during the mission. Position of each FFM with respect to the rocket is calculated by the knowledge of its release velocity (measured at exit point of the FFM launcher tract) providing an accuracy of 1 m over the maximum range of 3 km. Spatial and temporal nature of observants can be separated to within 3 m in space or 3 msec time interval.

Javadi, H.; Blaes, B.; Boehm, M.; Boykins, K.; Gibbs, J.; Goodman, W.; Lieneweg, U.; Lux, J.; Lynch, K.; Narvaez, P.

2000-01-01

15

Mesoscale Modeling of LX-17 Under Isentropic Compression  

SciTech Connect

Mesoscale simulations of LX-17 incorporating different equilibrium mixture models were used to investigate the unreacted equation-of-state (UEOS) of TATB. Candidate TATB UEOS were calculated using the equilibrium mixture models and benchmarked with mesoscale simulations of isentropic compression experiments (ICE). X-ray computed tomography (XRCT) data provided the basis for initializing the simulations with realistic microstructural details. Three equilibrium mixture models were used in this study. The single constituent with conservation equations (SCCE) model was based on a mass-fraction weighted specific volume and the conservation of mass, momentum, and energy. The single constituent equation-of-state (SCEOS) model was based on a mass-fraction weighted specific volume and the equation-of-state of the constituents. The kinetic energy averaging (KEA) model was based on a mass-fraction weighted particle velocity mixture rule and the conservation equations. The SCEOS model yielded the stiffest TATB EOS (0.121{micro} + 0.4958{micro}{sup 2} + 2.0473{micro}{sup 3}) and, when incorporated in mesoscale simulations of the ICE, demonstrated the best agreement with VISAR velocity data for both specimen thicknesses. The SCCE model yielded a relatively more compliant EOS (0.1999{micro}-0.6967{micro}{sup 2} + 4.9546{micro}{sup 3}) and the KEA model yielded the most compliant EOS (0.1999{micro}-0.6967{micro}{sup 2}+4.9546{micro}{sup 3}) of all the equilibrium mixture models. Mesoscale simulations with the lower density TATB adiabatic EOS data demonstrated the least agreement with VISAR velocity data.

Springer, H K; Willey, T M; Friedman, G; Fried, L E; Vandersall, K S; Baer, M R

2010-03-06

16

Dynamic mechanical signatures of aged LX17-1 plastic bonded explosive  

Microsoft Academic Search

The complex shear modulus of the plastic bonded explosive (PBX) LX-17-1 from stockpile returns, core tests and historical billets was measured over the temperature range from ?150 to 120°C at five frequencies from 0.1 to 10 Hz. LX-17-1 is composed of 92.5% insensitive high explosive triaminotrinitro-benzene (TATB) and 7.5% plastic binder, KF-800. Three relaxations were observed as peaks in the

D. Mark Hoffman

2001-01-01

17

Modeling Detonation Experiments on Triaminotrinitrobenzene (TATB)Based Explosives LX17, PBX 9502, and Ultrafine TATB  

Microsoft Academic Search

Previously determined ignition and growth reactive flow model parameters for detonating LX-17 (92.5% triaminotrinitrobenzene [TATB], 7.5% Kel-F binder), PBX 9502 (95% TATB, 5% Kel-F), and pure ultrafine TATB were used to calculate the results of two new experiments. Continuous detonation velocity measurements were made using embedded fiber optic (EFO) diagnostic probes in ambient temperature (25°C) LX-17 cylinders of various diameters.

Craig M. Tarver

2012-01-01

18

Development of a Detonation Profile Test for Studying Aging Effects in LX17  

Microsoft Academic Search

A new small-scale Detonation Profile Test (DPT) is being developed to investigate aging effects on the detonation behavior of insensitive high explosives. The experiment involves initiating a small LX-17 cylindrical charge (12.7-19.1 mm diameter x 25.4-33 mm long) and measuring the velocity and curvature of the emerging detonation wave using a streak camera. Results for 12.7 mm diameter unconfined LX-17

T Tran; P Lewis; C Tarver; J Maienschein; R Druce; R Lee; F Roeske

2002-01-01

19

Modeling two-dimensional shock initiation and detonation-wave phenomena in PBX 9404 and LX-17  

SciTech Connect

The ignition and growth concept of reactive flow in heterogeneous solid explosives is incorporated into a two-dimensional, finite element, Lagrangian code and used to model shock initiation and detonation wave propagation experiments on PBX 9404 and LX-17. The failure radii and corner turning abilities of detonating PBX 9404 and LX-17 are calculated. Two-dimensional shock initiation experiments on LX-17 which produce both failing and diverging detonation waves are accurately simulated.

Tarver, C.M.; Hallquist, J.O.

1981-05-15

20

Exploring evolutionary learning in a simulated hockey environment  

E-print Network

a simulated hockey game called Shock in which players at­ tempt to shoot a puck into their enemy's goal duringExploring evolutionary learning in a simulated hockey environment Alan D. Blair 1 Dept. of Computer measure based purely on whether or not a goal was scored. Moreover, they evolve to develop robust

Pollack, Jordan B.

21

Exploring evolutionary learning in a simulated hockey environment  

E-print Network

a simulated hockey game called Shock in which players at- tempt to shoot a puck into their enemy's goal duringExploring evolutionary learning in a simulated hockey environment Alan D. Blair1 Dept. of Computer measure based purely on whether or not a goal was scored. Moreover, they evolve to develop robust

Blair, Alan

22

Increased shock sensitivity of the insensitive explosive LX-17 at high temperatures  

SciTech Connect

Explosive formulations based on TATB (1.3.5-trichloro-2,4,6-trinitrobenzene) have proven to be remarkably insensitive to shock and thermal stimuli. However, hazards to an insensitive high explosive (IHE) charge do not always confine themselves to a single stimulus. In the study reported here, we have investigated the response of the LLNL explosive LX-17 (92.5%/7.5% TATB/Kel-F 800) to shock when the explosive is at an elevated temperature. The motivation for the work was to learn the extent to which the shock initiation threshold and critical initiation area of LX-17 are lowered by exposure to elevated temperature.

Lee, R.S.; Chau, H.H.

1994-05-01

23

Air Gaps, Size Effect, and Corner-Turning in Ambient LX-17  

SciTech Connect

Various ambient measurements are presented for LX-17. The size (diameter) effect has been measured with copper and Lucite confinement, where the failure radii are 4.0 and 6.5 mm, respectively. The air well corner-turn has been measured with an LX-07 booster, and the dead-zone results are comparable to the previous TATB-boosted work. Four double cylinders have been fired, and dead zones appear in all cases. The steel-backed samples are faster than the Lucite-backed samples by 0.6 {micro}s. Bare LX-07 and LX-17 of 12.7 mm-radius were fired with air gaps. Long acceptor regions were used to truly determine if detonation occurred or not. The LX-07 crossed at 10 mm with a slight time delay. Steady state LX-17 crossed at 3.5 mm gap but failed to cross at 4.0 mm. LX-17 with a 12.7 mm run after the booster crossed a 1.5 mm gap but failed to cross 2.5 mm. Timing delays were measured where the detonation crossed the gaps. The Tarantula model is introduced as embedded in 0 reactive flow JWL++ and Linked Cheetah V4, mostly at 4 zones/mm. Tarantula has four pressure regions: off, initiation, failure and detonation. The physical basis of the input parameters is considered.

Souers, P C; Hernandez, A; Cabacungan, C; Fried, L; Garza, R; Glaesemann, K; Lauderbach, L; Liao, S; Vitello, P

2008-02-05

24

Characterization of Detonation Wave Propagation in LX17 Near the Critical Diameter  

Microsoft Academic Search

A new Detonation Profile Test (DPT) was developed to measure simultaneously the detonation wave breakout profile and the average detonation velocity at the breakout surface. The test evaluated small cylindrical samples with diameter up to 19.08 mm and length up to 33 mm. The experiment involved initiating a LX-17 cylindrical specimen and recording the wave breakout using a fast streaking

T. D. Tran; C. M. Tarver; J. Maienschein; P. Lewis; R Pastrone; R. S. Lee; F. Roeske

2002-01-01

25

Air Gaps, Size Effect, and Corner-Turning in Ambient LX-17  

SciTech Connect

Various ambient measurements are presented for LX-17. The size (diameter) effect has been measured with copper and Lucite confinement, where the failure radii are 4.0 and 6.5 mm, respectively. The air well corner-turn has been measured with an LX-07 booster, and the dead-zone results are comparable to the previous TATB-boosted work. Four double cylinders have been fired, and dead zones appear in all cases. The steel-backed samples are faster than the Lucite-backed samples by 0.6 {micro}s. Bare LX-07 and LX-17 of 12.7 mm-radius were fired with air gaps. Long acceptor regions were used to truly determine if detonation occurred or not. The LX-07 crossed at 10 mm with a slight time delay. Steady state LX-17 crossed at 3.5 mm gap but failed to cross at 4.0 mm. LX-17 with a 12.7 mm run after the booster crossed a 1.5 mm gap but failed to cross 2.5 mm. Timing delays were measured where the detonation crossed the gaps. The Tarantula model is introduced as embedded in the Linked Cheetah V4.0 reactive flow code at 4 zones/mm. Tarantula has four pressure regions: off, initiation, failure and detonation. A report card of 25 tests run with the same settings on LX-17 is shown, possibly the most extensive simultaneous calibration yet tried with an explosive. The physical basis of some of the input parameters is considered.

Souers, P C; Hernandez, A; Cabacungen, C; Fried, L; Garza, R; Glaesemann, K; Lauderbach, L; Liao, S; Vitello, P

2007-05-30

26

A Comparison of New TATBs, FK-800 binder and LX-17-like PBXs to Legacy Materials  

SciTech Connect

Two newly synthesized versions of the insensitive high explosive (IHE) 1,3,5-triamino-2,4,6-trinitrobenzenes (TATBs) were compared to two legacy explosives currently used by the Department of Energy. Except for thermal analysis, small scale safety tests could not distinguish between the different synthetic routes. Morphologies of new TATBs were less faceted and more spherical. The particle size distribution of one new material was similar to legacy TATBs, but the other was very fine. Densities and submicron structure of the new TATBs were also significantly different from the legacy explosives. Pressed pellets of the new explosives were less dense. New FK-800 binder was used to prepare LX-17-like plastic bonded explosives (PBXs) from new and wet aminated TATB. Some mechanical, thermal and performance characterization of the new binder and LX-17-like PBXs was done. Significant differences were found. The reason for a number of these differences is not well understood.

Willey, T M; DePiero, S C; Hoffman, D M

2009-05-01

27

CHARACTERIZING DETONATING LX-17 CHARGES CROSSING A TRANSVERSE AIR GAP WITH EXPERIMENTS AND MODELING  

SciTech Connect

Experiments were performed using detonating LX-17 (92.5% TATB, 7.5% Kel-F by weight) charges with various width transverse air gaps with manganin peizoresistive in-situ gauges present. The experiments, performed with 25 mm diameter by 25 mm long LX-17 pellets with the transverse air gap in between, showed that transverse gaps up to about 3 mm could be present without causing the detonation wave to fail to continue as a detonation. The Tarantula/JWL{sup ++} code was utilized to model the results and compare with the in-situ gauge records with some agreement to the experimental data with additional work needed for a better match to the data. This work will present the experimental details as well as comparison to the model results.

Lauderbach, L M; Souers, P C; Garcia, F; Vitello, P; Vandersall, K S

2009-06-26

28

Shock simulation with magnetic pucks  

NASA Astrophysics Data System (ADS)

Magnetic pucks on an air table create a two dimensional ``gas.'' The pucks are accelerated around a race track forming a strong shock and a rarefaction wave. The shock density reaches the limit given by the Rankine Hugoniot equations. A shock front instability is observed.

Michaelis, M. M.

1994-08-01

29

SPORT & RECREATION SERVICES-ICE HOCKEY INTRAMURALS RELEASE OF LIABILITY, WAIVER OF CLAIMS,  

E-print Network

SPORT & RECREATION SERVICES-ICE HOCKEY INTRAMURALS RELEASE OF LIABILITY, WAIVER OF CLAIMS #:______________________ TO: THE UNIVERSITY OF LETHBRIDGE (THE "UOFL"), THE ACTIVITY: The UofL plays host to Ice Hockey, but is not limited to, game equipment such as: skates, pucks, sticks, helmets, goals; abrasions, bruises, blisters

Burg, Theresa

30

Inter-arrival Times of Goals in Ice Hockey  

Microsoft Academic Search

Previous studies have attempted to model goal scoring in sports such as ice hockey as simple Poisson processes. Others (Thomas, 2006) have shown that events within the game of ice hockey are better modelled as a Semi-Markov process determined by puck possession and location. I demonstrate that a similarly defined Semi-Markov process model is well-suited to describe the times between

Andrew C. Thomas

2007-01-01

31

Vulnerability of hot LX-17 to lightning strikes on exposed detonator and actuator cables  

SciTech Connect

Capacitor bank discharges with peak currents up to 700 kA were used to explode test sections of detonator cable and launch the dielectric material on top of the exploding conductor as a fast flyer plate. Velocity of the launched material, pressure profiles from the impact of the launched material and impact marks formed in aluminum witness plates were used to study the stimulus that could be transmitted to high explosive in the vicinity of the exploding cable. To quantify the risk of initiating the main charge or booster insensitive high explosive (IHE) in a weapon, one must know the threshold stimulus required for shock initiation. LX-17 samples, heated to temperatures up to 250C were impacted by 3 to 10-mm-wide stripes of 0.12-mm-thick Kapton to determine the initiation threshold velocity at ambient and elevated temperatures, The strips simulate the impact of the cover coat of a flat detonator cable which has been exploded by a lighting strike. The data allow us to assess the likelihood that a lightning strike on the cable would be able to initiate a detonation of the LX- 17 main charge.

Chau, H.H.; Osher, J.E.; Von Holle, W.G.; Lee, R.S.; Moua, K.

1993-12-01

32

Explosive Model Tarantula 4d/JWL++ Calibration of LX-17  

SciTech Connect

Tarantula is an explosive kinetic package intended to do detonation, shock initiation, failure, corner-turning with dead zones, gap tests and air gaps in reactive flow hydrocode models. The first, 2007-2008 version with monotonic Q is here run inside JWL++ with square zoning from 40 to 200 zones/cm on ambient LX-17. The model splits the rate behavior in every zone into sections set by the hydrocode pressure, P + Q. As the pressure rises, we pass through the no-reaction, initiation, ramp-up/failure and detonation sections sequentially. We find that the initiation and pure detonation rate constants are largely insensitive to zoning but that the ramp-up/failure rate constant is extremely sensitive. At no time does the model pass every test, but the pressure-based approach generally works. The best values for the ramp/failure region are listed here in Mb units.

Souers, P C; Vitello, P A

2008-09-30

33

Periodic Orbits on a Triangular Air Hockey Table By A. Baxter, J. Gemmer, K. Gerhart, S. Laverty, S. Weaver  

E-print Network

Periodic Orbits on a Triangular Air Hockey Table By A. Baxter, J. Gemmer, K. Gerhart, S. Laverty, S. Weaver Sponsored by Drs. Ron Umble and Zhoude Shao The Problem Examine periodic orbits on a triangular frictionless surface bounded by walls. · A triangular air hockey table with a bouncing puck. · Triangular

Umble, Ron

34

Embedded electromagnetic gauge measurements and modeling of shock initiation in the TATB based explosives PBX 9502 and LX-17  

SciTech Connect

We have completed a series of shock initiation experiments on PBX 9502 (95 weight % dry aminated TATB explosive, 5 weight % Kel-F 800 binder) and LX-17 (92.% wet aminated TATB, 7.5 % Kel-F 800). These experiments were performed on the gas/gas two stage gun at Los Alamos. Samples were prepared with ten or eleven embedded electromagnetic particle velocity gauges to measure the evolution of the wave leading up to a detonation. Additionally, one to three shock tracker gauges were used to track the position of the shock front with time and determine the point where detonation was achieved. Wave profiles indicate little delay between formation of hot-spots in the shock front and release of hotspot energy. In other words, a great deal of the buildup occurs in the shock front, rather than behind it. Run distances and times to detonation as a function of initial pressure are consistent with published data. The Ignition and Growth model with published parameters for LX-17 replicate the data very well.

Gustavsen, R. L. (Richard L.); Sheffield, S. A. (Stephen A.); Alcon, R. R. (Robert R.); Forbes, J. W. (Jerry W.); Tarver, C. M. (Craig M.); Garcia, F.

2001-01-01

35

Formulation and Characterization of LX-17-2 from new FK 800 binder and WA, ATK, and BAE TATBs  

SciTech Connect

Currently LLNL has no Kel-F 800 or wet-aminated TATB reserves for formulation. Although both materials are soon to be commercially available, their synthesis processes have changed and the explosive must be re-evaluated. In 2000 3M phased out the uses of perfluorooctanoyl (C8) derivatives due to environmental persistence and bioaccumulation issues. A C8 derivative was used as an emulsifier for making Kel F-800. In 2001 Kel F-800 was scheduled to be discontinued and the last Kel F-800 run was made in early 2002. LANL ordered 2M$ worth of Kel-F 800 for reserves and Pantex purchased several hundred pounds to satisfy mock needs. After four years, 3M has decided to introduce a Kel-F 800-like polymer based on a new emulsifier using the same chlorotrifluoroethylene and vinylidene fluoride monomers and emulsion polymerization process. They have produced 3 batches and claim the 'new' FK-800 is indistinguishable from the 'old' Kel-F 800 in any of their testing parameters. In June-July 2006 3M scaled up a batch of about 800 pounds and have test quantities available. We have samples of the new FK-800 for evaluation. Neither wet nor dry-aminated TATB has been synthesized in the US in any significant quantity since about 1985 and significant quantities of LX-17-1 has not been formulated since about 1990. Over the last few years as part of a DOD MANTECH, ATK Thiokol and BAE Holston Army Ammunition Plant (HAAP) have produced moderate quantities of TATB ({approx}5 kg batches) with plans to scale up for DOD applications. Thiokol TATB is polycrystalline with an average particle size of about 40 m (similar to WA TATB) but HAAP TATB is only 5-6 {micro}m (similar to ultrafine). We have obtained small quantities of these materials for evaluation. The project (1) compares new FK-800 with old Kel-F 800 and FK-800 lots currently available at LLNL, (2) compares and characterizes new TATB with old TATB, (3) formulates new FK-800 with wet-aminated TATB and new TATBs in according to HAAP slurry coating procedure into LX-17-2, and (4) evaluates the mechanical and detonation performance characteristics of this insensitive high explosive (IHE). Priorities are to prove that these new materials can be formulated, pressed to density and machined; and that they contain no impurities which might cause compatibility issues. Since 3M, LANL, Pantex and AWE are currently evaluating the new FK-800, we plan to share data rather than repeating their work. Our effort is described.

DePiero, S C; Hoffman, D M

2007-08-03

36

Puck - A Visual Programming System for Schools  

Microsoft Academic Search

There are many visual programming languages for educa- tion but they are poorly used in German schools as most do not fit the requirements of the various curricula. This pa- per introduces a new visual programming language called Puck, that has been developed at the Friedrich Schiller University, Jena, in accordance with the wishes of teachers in Thuringia (a federal

Lutz Kohl

37

Canada's Game : Hockey and Identity  

Microsoft Academic Search

Almost every Canadian can hum the original Hockey Night in Canada theme - even those who don't think of themselves as hockey fans. For more than a century, Canadians have seen something of themselves in the sport of hockey. \\

Andrew C. Holman

2009-01-01

38

The Ice Hockey Injury  

NSDL National Science Digital Library

A high school hockey team is playing the last of three games in one day. The game gets rough, and the star player is slammed against the boards. Injured, he is escorted off the ice. This case follows his health as it deteriorates over the next several hours. Students are presented with the hockey player's symptoms, and they use their knowledge of anatomy and physiology to diagnose the problem.

Phil Stephens

2004-10-01

39

Backcheck: A Hockey Retrospective  

NSDL National Science Digital Library

In Canada, to grow up with ice in your veins is considered a terrifically good thing. For well over a hundred years, Canadians have lived -- almost symbiotically -- with ice hockey. While their American neighbors claim ownership over a multitude of cultural identities -- like baseball and basketball -- to varying degrees of seriousness, Canadians truly eat, sleep, and breath hockey as the sole definition of who they are. This site, produced by the National Library of Canada, does an exceptional job of providing visitors with very well arranged material reflecting on the history of hockey in Canada. In fact, while very few Web sites provide much of interest on their home pages, the letter of introduction by Roch Carrier truly makes you want to delve into Backcheck and take in some of this fascinating history. The site includes several historical articles, the gems of the site, that take you all the way back to the patent of the ice skate and the introduction of women in hockey -- including a picture of Lord Stanley's daughter playing hockey circa 1890 (thought to be the earliest photograph of women playing the sport). Also a part of the site is a small, but interesting, educational resources section including lessons for grades 4 through 12. Check it out.

40

FIELD HOCKEY at Williams College  

E-print Network

students Our goal is to expose participants to the Williams College's Field Hockey Program, how the team2012 FIELD HOCKEY CLINIC at Williams College for rising Sophomore, Junior & Senior High School and instruction, lunch and a t-shirt. EQUIPMENT Please bring your field hockey stick, mouth guard, shinguards

Aalberts, Daniel P.

41

The Science of Hockey  

NSDL National Science Digital Library

The Science of Hockey is the first in a series of "Sports Science" resources developed by the Exploratorium. This site takes you inside the game: you'll hear from NHL players and coaches from the San Jose Sharks, as well as leading physicists and chemists.

42

A Hockey Hero  

ERIC Educational Resources Information Center

In this article, the author shares the story of Will Poulos, a hockey player who has developmental and physical disabilities (mild mental retardation and left cerebral palsy). Will has overcome tremendous obstacles in his life. He was born at 28 weeks in 1986 at three pounds, one ounce, and 19 inches long. He was very sick; his odds for survival…

Bolduc, Matt

2009-01-01

43

The Hockey/Art Alliance  

ERIC Educational Resources Information Center

Ice hockey can be a violent sport as evidenced by the fighting among the members of an ice hockey team of 13-year-old boys from mixed racial and socioeconomic backgrounds. Two series of eight art sessions were used to help the boys develop respect for themselves and others, to solve conflicts without combat, and to build more positive…

Wadeson, Harriet; Wirtz, Gail

2005-01-01

44

Propagation or failure of detonation across an air gap in an LX-17 column: continuous time-dependent detonation or shock speed using the Embedded Fiber Optic (EFO) technique  

SciTech Connect

The detailed history of the shock/detonation wave propagation after crossing a room-temperature-room-pressure (RTP) air gap between a 25.4 mm diameter LX-17 donor column and a 25.4 mm diameter by 25.4 mm long LX-17 acceptor pellet is investigated for three different gap widths (3.07, 2.08, and 0.00 mm) using the Embedded Fiber Optic (EFO) technique. The 2.08 mm gap propagated and the 3.07 mm gap failed and this can be seen clearly and unambiguously in the EFO data even though the 25.4 mm-long acceptor pellet would be considered quite short for a determination by more traditional means such as pins.

Hare, D E; Chandler, J B; Compton, S M; Garza, R G; Grimsley, D A; Hernandez, A; Villafana, R J; Wade, J T; Weber, S R; Wong, B M; Souers, P C

2008-01-16

45

Injuries in men's international ice hockey: a 7-year study of the International Ice Hockey Federation Adult World Championship Tournaments and Olympic Winter Games  

PubMed Central

Background Information on ice hockey injuries at the international level is very limited. The aim of the study was to analyse the incidence, type, mechanism and severity of ice hockey injuries in men's international ice hockey tournaments. Methods All the injuries in men's International Ice Hockey Federation World Championship tournaments over a 7-year period were analysed using a strict definition of injury, standardised reporting strategies and an injury diagnosis made by a team physician. Results 528 injuries were recorded in games resulting in an injury rate of 14.2 per 1000 player-games (52.1/1000 player-game hours). Additionally, 27 injuries occurred during practice. For WC A-pool Tournaments and Olympic Winter Games (OWG) the injury rate was 16.3/1000 player-games (59.6/1000 player-game hours). Body checking, and stick and puck contact caused 60.7% of the injuries. The most common types of injuries were lacerations, sprains, contusions and fractures. A laceration was the most common facial injury and was typically caused by a stick. The knee was the most frequently injured part of the lower body and the shoulder was the most common site of an upper body injury. Arenas with flexible boards and glass reduced the risk of injury by 29% (IRR 0.71, (95% CI 0.56 to 0.91)). Conclusions The incidence of injury during international ice hockey competition is relatively high. Arena characteristics, such as flexible boards and glass, appeared to reduce the risk of injury. PMID:25293341

Tuominen, Markku; Stuart, Michael J; Aubry, Mark; Kannus, Pekka; Parkkari, Jari

2015-01-01

46

2-D Collision of Pucks -- Center of Mass Velocity  

NSDL National Science Digital Library

This lab uses Tracker video analysis software to measure and analyze the center of mass of a system of two pucks during a two-dimensional collision. Students measure the initial and final velocity vector for each puck and calculate the center-of-mass velocity of the system before and after the collision and show that it is constant. Tracker can automatically calculate and mark the center of mass in each frame, so it is easy to see that the center of mass velocity is constant and calculate its value from graphs of center-of-mass variables. The zip file contains the lab handout, a video showing a 2-D collision of pucks, and the Tracker file. The video copyright is Flashmedia. To open the Tracker file, download and run Tracker from http://www.cabrillo.edu/~dbrown/tracker/. Tracker is free. The videos can be used with other video analysis software; however, the handout has screen captures from Tracker and instructions specifically written for Tracker.

Titus, Aaron

2011-01-16

47

A to Z Encyclopaedia of Ice Hockey  

NSDL National Science Digital Library

Developed by the UK-based Stewart Roberts and Phil Stamp, this huge compendium of ice hockey information (over 14,000 entries) is all the more notable for its international scope. No NHL-centricity here. In fact, the only Americans and Canadians in the site's Hall of Fame are in the International Ice Hockey Federation section. A constant work-in-progress, this site is a seemingly bottomless well of hockey trivia and lore. Need to know the Attendance Averages for Finnish Division 1 hockey? The winner of the 1997 Croation hockey championship? What the "A" on players' jerseys means? Its all here and much, much more.

48

Huskie Hockey Camps Program Description  

E-print Network

). A well, each age group will be supervised by at least two group leaders and three on-ice instructors will conduct each ice session, one being the head instructor. Note, some of our younger age groups require more on-ice hockey instruction as well as a variety of other daily activities. Off-ice sessions may

Saskatchewan, University of

49

Surface resistance measurements of HTS films placed inside a cavity with a puck resonator  

NASA Astrophysics Data System (ADS)

Possibilities of dielectric puck resonators for measuring of the surface resistance of arbitrary shaped pieces of high temperature superconducting (HTS) films, placed inside a copper shielding cavity are discussed. Effect of additional microwave losses, caused by the field perturbation, on the results of the surface resistance measurements is analysed. The problem is investigated experimentally by comparing the results obtained by puck and parallel plate resonator techniques for an YBCO film.

Nurgaliev, T.; Cohen, L. F.; Purnell, A.; HaO, L.; Gallop, J.

2004-04-01

50

NU Intramural Sports Floor Hockey Rules  

E-print Network

NU Intramural Sports Floor Hockey Rules GENERAL RULES: 1. All players must present their valid goals. Each team is allowed 1 time-out per game, if the score is within 2 goals and its in the last 2. 11. Players may use their own sticks, however floor hockey sticks can be provided by the Intramural

Sridhar, Srinivas

51

NU Intramural Sports Ice Hockey Rules  

E-print Network

NU Intramural Sports Ice Hockey Rules GENERAL RULES: 1. All players must present their valid will be removed from Intramurals. Intramurals Supervisors also have the authority to end a game. 6. USA Hockey, the clock will stop on all whistles (WITH A 2 GOAL LEAD OR FEWER). The game may be shortened

Sridhar, Srinivas

52

Visual Attentional Orienting in Developing Hockey Players.  

ERIC Educational Resources Information Center

Covert visual orienting was measured in 13 twelve-year-old and 11 fifteen-year-old hockey players and in 13 college students with no hockey training. Found that high-skill 15-year-olds were better able than all other groups to take advantage of the general alerting effect produced by the sudden onset of a cue. (MDM)

Enns, James T.; Richards, James C.

1997-01-01

53

The Open Geospatial Consortium PUCK Standard: Building Sensor Networks with Self-Describing Instruments  

NASA Astrophysics Data System (ADS)

Sensor technology is rapidly advancing, enabling smaller and cheaper instruments to monitor Earth's environment. It is expected that many more kinds and quantities of networked environmental sensors will be deployed in coming years. Knowledge of each instrument's command protocol is required to operate and acquire data from the network. Making sense of these data streams to create an integrated picture of environmental conditions requires that each instrument's data and metadata be accurately processed and that "suspect" data be flagged. Use of standards to operate an instrument and retrieve and describe its data generally simplifies instrument software development, integration, operation and data processing. The Open Geospatial Consortium (OGC) PUCK protocol enables instruments that describe themselves in a standard way. OGC PUCK defines a small "data sheet" that describes key instrument characteristics, and a standard protocol to retrieve the data sheet from the device itself. Data sheet fields include a universal serial number that is unique across all PUCK-compliant instruments. Other fields identify the instrument manufacturer and model. In addition to the data sheet, the instrument may also provide a "PUCK payload" which can contain additional descriptive information (e.g. a SensorML document or IEEE 1451 TEDS), as well as actual instrument "driver" code. Computers on the sensor network can use PUCK protocol to retrieve this information from installed instruments and utilize it appropriately, e.g. to automatically identify, configure and operate the instruments, and acquire and process their data. The protocol is defined for instruments with an RS232 or Ethernet interface. OGC members recently voted to adopt PUCK as a component of the OGC's Sensor Web Enablement (SWE) standards. The protocol is also supported by a consortium of hydrographic instrument manufacturers and has been implemented by several of them (https://sites.google.com/site/soscsite/). Thus far PUCK has been deployed on oceanographic observatories in North America and Europe, and is generally applicable to environmental sensor networks. As an example we describe how PUCK can be used with other established and emerging OGC SWE standards to simplify configuration and operation of environmental sensor networks, and to automate assessment and processing of the sensor data. The PUCK specification is free of charge and can be downloaded along with tools to implement and use the standard from http://www.opengeospatial.org/standards/puck.

O'Reilly, T. C.; Broering, A.; del Rio, J.; Headley, K. L.; Toma, D.; Bermudez, L. E.; Edgington, D.; Fredericks, J.; Manuel, A.

2012-12-01

54

PUCK: An Automated Prompting System for Smart Environments  

PubMed Central

The growth in popularity of smart environments has been quite steep in the last decade and so has the demand for smart health assistance systems. A smart home-based prompting system can enhance these technologies to deliver in-home interventions to users for timely reminders or brief instructions describing the way a task should be done for successful completion. This technology is in high demand given the desire of people who have physical or cognitive limitations to live independently in their homes. In this paper, with the introduction of the “PUCK” prompting system, we take an approach to automate prompting-based interventions without any predefined rule sets or user feedback. Unlike other approaches, we use simple off-the-shelf sensors and learn the timing for prompts based on real data that is collected with volunteer participants in our smart home test bed. The data mining approaches taken to solve this problem come with the challenge of an imbalanced class distribution that occurs naturally in the data. We propose a variant of an existing sampling technique, SMOTE, to deal with the class imbalance problem. To validate the approach, a comparative analysis with Cost Sensitive Learning is performed. PMID:25364323

Das, Barnan; Cook, Diane J.; Schmitter-Edgecombe, Maureen; Seelye, Adriana M.

2014-01-01

55

Maintaining hydration with a carbohydrate-electrolyte solution improves performance, thermoregulation, and fatigue during an ice hockey scrimmage.  

PubMed

Research in "stop-and-go" sports has demonstrated that carbohydrate ingestion improves performance and fatigue, and that dehydration of ?1.5%-2% body mass (BM) loss results in decreased performance, increased fatigue, and increased core temperature. The purpose of this investigation was to assess the physiological, performance, and fatigue-related effects of maintaining hydration with a carbohydrate-electrolyte solution (CES) versus dehydrating by ?2% BM (no fluid; NF) during a 70-min ice hockey scrimmage. Skilled male hockey players (n = 14; age, 21.3 ± 0.2 years; BM, 80.1 ± 2.5 kg; height, 182.0 ± 1.2 cm) volunteered for the study. Subjects lost 1.94% ± 0.1% BM in NF, and 0.12% ± 0.1% BM in CES. Core temperature (Tc) throughout the scrimmage (10-50 min) and peak Tc (CES: 38.69 ± 0.10 vs. NF: 38.92 ± 0.11 °C; p < 0.05) were significantly reduced in CES compared with NF. Players in CES had increased mean skating speed and time at high effort between 30-50 min of the scrimmage. They also committed fewer puck turnovers and completed a higher percentage of passes in the last 20 min of play compared with NF. Postscrimmage shuttle skating performance was improved in CES versus NF and fatigue was lower following the CES trial. The results indicated that ingesting a CES to maintain BM throughout a 70-min hockey scrimmage resulted in improved hockey performance and thermoregulation, and decreased fatigue as compared with drinking no fluid and dehydrating by ?2%. PMID:25061764

Linseman, Mark E; Palmer, Matthew S; Sprenger, Heather M; Spriet, Lawrence L

2014-11-01

56

Hockey Greats Retire En Masse  

NSDL National Science Digital Library

Mark of distinctionhttp://sportsillustrated.cnn.com/2005/writers/michael_farber/09/12/messier.retires/index.htmlCentre Ron Francis retires after 23 distinguished NHL seasonshttp://www.canada.com/edmonton/edmontonjournal/news/sports/story.html?id=cda782b9-2192-4783-8365-7acc1bc6b656Another NHL star quits; Francis retireshttp://msnbc.msn.com/id/9340488/ESPN.com: NHL Statisticshttp://sports.espn.go.com/nhl/statisticsHockey Hall of Famehttp://www.hhof.com/index.htmAfter a long strike, the National Hockey League is gearing up for the 2005-2006 season in earnest. Regrettably, the game will be without two of its standout players, as both Mark Messier of the New York Rangers and Ron Francis of the Toronto Maple Leafs announced their retirements this week. Messier began his 25-season career with his hometown Edmonton Oilers in 1979, and led the team to five Stanley Cup victories. Of course, many will also remember his many fine years of play with the Rangers, where he also led them to victory in the 1994 Stanley Cap as well. Messier made his announcement on a conference call because as he remarked, "no one wants to see a blubbering idiot at the podium".

2005-01-01

57

PhET Simulation: Electric Field Hockey  

NSDL National Science Digital Library

This webpage contains an activity that allows users to guide a charged object, or "puck", through a maze using the electric field created by point charges placed by the user. Options exist to control the mass and sign of the charge of the puck. There are four levels of difficulty that change the barrier placement. Barriers do not affect the fields, only define the path of the puck. The user can view a vector representation of the electric field, as well as trace the path of the puck. After each attempt the user may move the existing charge or place more charges and try again. This activity gives users an immediate experience with the interaction between fields and charges. The page also contains samples of learning goals as well as user-submitted ideas and activities for use with the simulation. This simulation is part of a large and growing collection. It has been designed using principles from physics education research and refined based on student interviews.

Project, Physics E.

2006-10-31

58

Cardiac arrhythmia detection using combination of heart rate variability analyses and PUCK analysis.  

PubMed

This paper presents cardiac arrhythmia detection using the combination of a heart rate variability (HRV) analysis and a "potential of unbalanced complex kinetics" (PUCK) analysis. Detection performance was improved by adding features extracted from the PUCK analysis. Initially, R-R interval data were extracted from the original electrocardiogram (ECG) recordings and were cut into small segments and marked as either normal or arrhythmia. HRV analyses then were conducted using the segmented R-R interval data, including a time-domain analysis, frequency-domain analysis, and nonlinear analysis. In addition to the HRV analysis, PUCK analysis, which has been implemented successfully in a foreign exchange market series to characterize change, was employed. A decision-tree algorithm was applied to all of the obtained features for classification. The proposed method was tested using the MIT-BIH arrhythmia database and had an overall classification accuracy of 91.73%. After combining features obtained from the PUCK analysis, the overall accuracy increased to 92.91%. Therefore, we suggest that the use of a PUCK analysis in conjunction with HRV analysis might improve performance accuracy for the detection of cardiac arrhythmia. PMID:24110032

Mahananto, Faizal; Igasaki, Tomohiko; Murayama, Nobuki

2013-01-01

59

Pythagoras and the National Hockey League  

Microsoft Academic Search

The nature of the relationship Bill James found between the win\\/loss percentage of a Major League Baseball team and the number of runs the team scores and allows over the course of a season is investigated for the National Hockey League (NHL). We find the optimal form of James' model for the NHL using the absolute error criterion and demonstrate

James J. Cochran; Rob Blackstock

2009-01-01

60

Siméon Poisson and the National Hockey League  

Microsoft Academic Search

Separate Poisson distributions were evaluated via several hypotheses tests for each of the 16 teams in the National Hockey League using 1973–74 goals for and goals against both home and away. After examining independence of goals for and goals against, they in turn were used to explain order of finish for the 16 teams. The results were quite surprising.

Gary M. Mullet

1977-01-01

61

Hockey: Special Olympics Sports Skills Instructional Program.  

ERIC Educational Resources Information Center

Suggestions for coaching and teaching hockey skills to mentally retarded persons are presented in this guide, one of seven booklets on Special Olympics Sports Skills Instructional Programs. An introductory section presents an overview of the sport, information on the organization of the training session, and a list of goals, objectives, and…

Special Olympics, Inc., Washington, DC.

62

Evaluating parameters of a professional hockey team  

Microsoft Academic Search

A championship professional hockey team was eval uated with regard to three systems: cardiovascular, muscular, and visual. The cardiovascular system was tested three times during the season, revealing little significant variation in fitness parameters from the preseason to the late-season periods. The visual and muscular testings were performed only during the preseason. Visual functions, especially eye speed and span, were

Jeffrey Minkoff

1982-01-01

63

Truman State University Intramurals Floor Hockey  

E-print Network

Truman State University Intramurals Floor Hockey Location: Student Recreation Center Entry Form. SCORING: Goals are worth one (1) point. Shots that deflect off of the body of any player unintentionally will be counted as goals. 9. MERCY RULE: When a team is winning by seven (7) or more anytime in the 3rd period

Gering, Jon C.

64

Strategies for Pulling the Goalie in Hockey  

Microsoft Academic Search

This paper develops a simulator for matches in the National Hockey League with the intent of assessing strategies for pulling the goaltender. Aspects of the approach that are novel include breaking the game down into ner and more realistic situations, introducing the eect of penalties and including the home-ice advantage. Parameter estimates used in the simulator are obtained through the

David Beaudoin; Tim B. Swartz

2010-01-01

65

Change Agent Research for Windsor Minor Hockey.  

ERIC Educational Resources Information Center

This study was based on an earlier 1972-73 study (see SP 009 113) which led to organizational restructuring of Windsor minor hockey (WMH). It was felt that further studies comparing attitudes and beliefs with behavior would be beneficial. Of particular interest were: (a) whether or not attitudes and beliefs changed due to adjusted organization and…

Moriarty, Dick; Duthie, James

66

Assessment of ice hockey performance in real-game conditions  

Microsoft Academic Search

The aim of this study was to adapt a performance measurement tool, the Team Sport Assessment Procedure (TSAP), to ice hockey during match-play. In addition to the six categories included in the original observational procedure, the ice hockey TSAP contained four new categories. Twelve Pee-Wee ice hockey matches were video-recorded during a regional championship tournament. The game play of 103

Luc Nadeau; Paul Godbout; Jean-François Richard

2008-01-01

67

Social determinants of violence in hockey: a review.  

PubMed

Research on the social determinants of hockey violence is organized in this paper under three main headings: (1) the social organization of the hockey "system", (2) mass media portrayals of the professional game, and (3) the influence of players' reference others. It appears that these determinants all contribute to a social environment in which hockey performers perceive that the rewards of violence often outweigh the costs. PMID:498406

Smith, M D

1979-03-01

68

11. Photocopy of Photograph (Courtesy of the Detroit Hockey Club, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Photocopy of Photograph (Courtesy of the Detroit Hockey Club, Detroit, Michigan). GROUNDBREAKING FOR ADDITION, JUNE 23, 1965. Left Sid Abel, Genral Manager of the Detroit Hockey Club Center - Jerome Cavanaugh, Mayor, City of Detroit Right - Nick Landis, General Manager of the Olympia Stadium - Olympia Arena, 5920 Grand River Avenue, Detroit, Wayne County, MI

69

2011 PROSPECTUS2011 PROSPECTUS WESLEYAN FIELD HOCKEYWESLEYAN FIELD HOCKEY  

E-print Network

Manager/Asst. AD ...Erin Carey Assistant AD ........................Rachel Ludwig Fitness Center Director..................Joe Reilly W Basketball/Assoc. AD...........Kate Mullen Men's Crew..........................Phil Carney Women........................................Chris Potter/Jeff Gilarde Men's Ice Hockey................Chris Potter Women's Ice Hockey ..........Jodi Mc

Devoto, Stephen H.

70

Analysis of Player Actions in Selected Hockey Game Situations  

Microsoft Academic Search

We present a proof of concept system to represent and reason about hockey play. The system takes as input player motion trajectory data tracked from game video and supported by knowledge of hockey strategy, game situation and specific player profiles. The raw motion trajectory data consists of space-time point sequences of player position registered to rink coordinates. The raw data

Fahong Li; Robert J. Woodham

2005-01-01

71

Match Analysis of Elite Ice Sledge Hockey in Paralympics 2010  

Microsoft Academic Search

The aims of this study were to describe match actions in ice sledge hockey on a team level and identify the differences between successful and less successful teams. Eight ice sledge hockey matches in the Winter Paralympics 2010 were recorded and analyzed using the Dartfish TeamPro 5.5 analysis program. The variables for the analysis were chosen based on the performance

Jouni Juntunen; Minna Blomqvist; Bartosz Molik; Andrzej Kosmol; Natalia Morgulec-Adamowicz

2011-01-01

72

Video analysis of hockey play in selected game situations  

Microsoft Academic Search

We present a proof of concept system to represent and reason about hockey play. The system takes as input player motion trajectory data tracked from game video and supported by knowledge of hockey strategy, game situation and specific player profiles. The raw motion trajectory data consists of space-time point sequences of player position registered to rink coordinates. The raw data

Fahong Li; Robert J. Woodham

2009-01-01

73

Blood Money: Incentives for Violence in NHL Hockey  

Microsoft Academic Search

The level of violence in the National Hockey League (NHL) reached its highest point in 1987 and has reduced somewhat since then, although to levels much larger than before the first team expansions in 1967. Using publicly available information from several databases 1996–2007, the incentives for violence in North American ice hockey are analyzed.We examine the role of penalty minutes

John P. Haisken-DeNew; Matthias Vorell

2008-01-01

74

Benthic re-colonization in post-dredging pits in the Puck Bay (Southern Baltic Sea)  

NASA Astrophysics Data System (ADS)

The stage of benthic re-colonization at a site formed by sand extraction was investigated some 10 years after the cessation of dredging. The examined post-dredging pit is one of five deep (up to 14 m) pits created with a static suction hopper on the sandy, flat and shallow (1-2 m) part of the inner Puck Bay (the southern Baltic Sea). The topography of the dredged area makes a specific trap for different kinds of organic matter. It is created by the small areas of post-dredging pits as compared to their depths. As a result, organic matter accumulation leads to anaerobic conditions and hydrogen sulfide formation. Macrofauna was not found to occur permanently in the deepest part (11 m) of the cup-shaped depression, which was characterized by its small area (0.2 km 2) and steep walls. However, permanent occurrence of meiofauna (max. 180 ind. 10 cm -2, mainly Nematoda) was noted. Undoubtedly, re-colonization of benthic fauna assemblages, typical of shallow and sandy seabed of the Puck Bay, will not follow in a natural way in the area of post-dredging pits. Also, it could not be expected that the re-colonization sequence would result in the formation of a structure similar to that of the natural depression (the Ku?nica Hollow).

Szymelfenig, Maria; Kotwicki, Lech; Graca, Bo?ena

2006-07-01

75

Arthroscopic Labral Repair and Treatment of Femoroacetabular Impingement in Professional Hockey Players  

Microsoft Academic Search

Background: Hip injuries are common among professional hockey players in the National Hockey League (NHL).Hypothesis: Professional hockey players will return to a high level of function and ice hockey after arthroscopic labral repair and treatment of femoroacetabular impingement.Study Design: Case series; Level of evidence, 4.Methods: Twenty-eight professional hockey players (NHL) were unable to perform at the professional level due to

Marc J. Philippon; Douglass R. Weiss; David A. Kuppersmith; Karen K. Briggs; Connor J. Hay

2010-01-01

76

International Toys in Space: Hockey - Duration: 2:12.  

NASA Video Gallery

Cosmonauts Sergi Treschev and Valery Korzun discover ways to adapt the game of hockey while trying to overcome the challenges of playing the game in microgravity. Astronaut Peggy Whitson narrates t...

77

A survey of age group ice hockey goal keepers.  

PubMed

How large are age group ice hockey goal keepers who defend goals in the Canadian amateur hockey system? This and similar questions regarding physical size were the subject of a survey of age group ice hockey goal keepers from six age categories recognized by the Canadian Amateur Hockey Association. Of these six categories, only four, namely Mite, Pee Wee, Bantam, and Midget were sampled with sufficient frequency to be reported here. A non-amateur seventh category entitled Professional was also examined using the same survey instruments. The goalers participating in the survey provided anecdotal information, were weighed, height measured, and then photographed while in their goal keepers' 'crouch', both with and without their full goal keeping equipment. Non-inferential statistics of central tendency and dispersion were used to examine normalcies of anthropometric measures, proportionality of growth process, and distribution of apparent body size as determined from the blocking area of the body (frontal perspective). PMID:3219671

Wilberg, R B

1988-12-01

78

Crime, Punishment, and Recidivism: Lessons from the National Hockey League  

Microsoft Academic Search

Among the fundamental elements of the sport of ice hockey are the on-ice rules violations occasionally committed by players and the penalties assessed for those violations. During the 1998-99 season, the National Hockey League (NHL) for the first time experimented with the deployment of two on-ice referees for a selection of games instead of the customary single referee, significant in

W. David Allen

2002-01-01

79

Automatic acquisition of motion trajectories: tracking hockey players  

NASA Astrophysics Data System (ADS)

Computer systems that have the capability of analyzing complex and dynamic scenes play an essential role in video annotation. Scenes can be complex in such a way that there are many cluttered objects with different colors, shapes and sizes, and can be dynamic with multiple interacting moving objects and a constantly changing background. In reality, there are many scenes that are complex, dynamic, and challenging enough for computers to describe. These scenes include games of sports, air traffic, car traffic, street intersections, and cloud transformations. Our research is about the challenge of inventing a descriptive computer system that analyzes scenes of hockey games where multiple moving players interact with each other on a constantly moving background due to camera motions. Ultimately, such a computer system should be able to acquire reliable data by extracting the players" motion as their trajectories, querying them by analyzing the descriptive information of data, and predict the motions of some hockey players based on the result of the query. Among these three major aspects of the system, we primarily focus on visual information of the scenes, that is, how to automatically acquire motion trajectories of hockey players from video. More accurately, we automatically analyze the hockey scenes by estimating parameters (i.e., pan, tilt, and zoom) of the broadcast cameras, tracking hockey players in those scenes, and constructing a visual description of the data by displaying trajectories of those players. Many technical problems in vision such as fast and unpredictable players' motions and rapid camera motions make our challenge worth tackling. To the best of our knowledge, there have not been any automatic video annotation systems for hockey developed in the past. Although there are many obstacles to overcome, our efforts and accomplishments would hopefully establish the infrastructure of the automatic hockey annotation system and become a milestone for research in automatic video annotation in this domain.

Okuma, Kenji; Little, James J.; Lowe, David

2003-12-01

80

For Immediate Release --Thursday, April 3, 2014 Pronghorns men's hockey program taps Red Wings  

E-print Network

For Immediate Release -- Thursday, April 3, 2014 Pronghorns men's hockey University of Lethbridge Pronghorns Athletics has named Spiros Anastas as the new's an exciting time for Pronghorns men's hockey, it's hard not to get excited

Seldin, Jonathan P.

81

2011 FIELD HOCKEY CLINIC at Williams College for rising Sophomore, Junior & Senior High School students  

E-print Network

students Our goal is to expose participants to the Williams College's Field Hockey Program, how the team2011 FIELD HOCKEY CLINIC at Williams College for rising Sophomore, Junior & Senior High School and instruction, lunch and a t-shirt. EQUIPMENT Please bring your field hockey stick, mouth guard, shinguards

Aalberts, Daniel P.

82

Use of Performance Metrics to Forecast Success in the National Hockey League  

E-print Network

- cess in the National Hockey League. Our approach combines traditional statistics, such as goals and lack of events (goals). This paper describes a National Hockey League (NHL) Case Study in which weUse of Performance Metrics to Forecast Success in the National Hockey League Joshua Weissbock

Inkpen, Diana

83

Description, Analysis and Prediction of Player Actions in Selected Hockey Game Situations  

Microsoft Academic Search

Abstract Motion is an important cue to the intentions of active agents in environments involving collaboration and competition. We demonstrate this in the domain of ice hockey. We develop a framework to represent and reason about hockey behaviors using as input actual player motion trajectory data tracked from game video and supported by knowledge of hockey strategy, game context and

Fahong Li

2004-01-01

84

Even as Wits women's hockey coach Pietie Coetzee (extreme left, back row) heads off  

E-print Network

injury-cover call-up. She is the highest goal-scorer in international women's hockey and is hoping to addwitsblitz TimesTimes Even as Wits women's hockey coach Pietie Coetzee (extreme left, back row and preparation of her team as they build up to the USSA hockey tournament at the end of June. The Wits 1st team

Wagner, Stephan

85

Periodic Orbits on a Triangular Air Hockey Table A Senior Thesis Submitted to the Department of  

E-print Network

Periodic Orbits on a Triangular Air Hockey Table A Senior Thesis Submitted to the Department 2 #12;Abstract We explore the existence of periodic orbits on a triangular air hockey table, also concerning more general triangles in section 3. 3 #12;Periodic Orbits in a Triangular Air Hockey Table

Umble, Ron

86

"No Fear Comes": Adolescent Girls, Ice Hockey, and the Embodiment of Gender.  

ERIC Educational Resources Information Center

Examined the relationship between gender, physicality, and embodiment among Canadian adolescent girls who played ice hockey. Interview data indicated that the girls emphasized the importance of being aggressive (fearless in use of the body). Players understood that contrasts between men's hockey (more physical and aggressive) and women's hockey

Theberge, Nancy

2003-01-01

87

Increasing task complexity and ice hockey skills of youth athletes.  

PubMed

The objective of this pilot study was to investigate the effects on cognitive performance of progressively adding tasks specific to ice hockey (skating, stick handling, and obstacle avoidance) during a visual interference task (Stroop Color Word Test-interference condition). In addition, the effects on locomotor performance of progressively adding tasks of stickhandling, visual interference, and obstacle avoidance related to maximal skating speed and minimal obstacle clearance were investigated in eight male athletes ages 10 to 12 years. Results revealed decreased performance on both cognitive and physical measures with increased task complexity, suggesting that adding complexity to an environment influences hockey skill performance. PMID:21466078

Fait, Philippe E; McFadyen, Bradford J; Zabjek, Karl; Reed, Nick; Taha, Tim; Keightley, Michelle

2011-02-01

88

Last Updated: 8/4/2012 FLOOR HOCKEY  

E-print Network

Last Updated: 8/4/2012 FLOOR HOCKEY *The following rules provided by Purdue Intramural Sports but not required. II. The Court A. The playing court will be the MAC gym B. The goal box, located directly in front of the goal, will be nine (9) feet wide and four (4) feet deep. C. The goals are four (4) feet high by six (6

Pittendrigh, Barry

89

Advanced Field Hockey; Physical Education: 5551.22.  

ERIC Educational Resources Information Center

GRADES OR AGES: Grades 7-12. SUBJECT MATTER: Advanced field hockey. ORGANIZATION AND PHYSICAL APPEARANCE. Course guidelines, description, and a broad goal statement are presented and behavioral objectives listed. Course content and learning activities to meet the skill objectives are also presented. A 14-item bibliography is included. OBJECTIVES…

Lowe, Billye J.

90

Last Updated: 9/30/2013 FLOOR HOCKEY  

E-print Network

Last Updated: 9/30/2013 FLOOR HOCKEY *The following rules provided by Purdue Intramural Sports. The Court A. The playing court will be the MAC gym B. The goal box, located directly in front of the goal, will be nine (9) feet wide and four (4) feet deep. C. The goals are four (4) feet high by six (6) feet wide

Pittendrigh, Barry

91

An Assessment of the Dietary Habits of College Hockey Players  

Microsoft Academic Search

While significant research exists on the nutritional patterns of football players, soccer players, bodybuilders, and runners there appears to be a gap in the literature regarding nutrition and hockey players. This descriptive study, with a 77% response rate, utilized a 3-day food record, eating and lifestyles patterns questionnaire, and height and weight measurements to assess the dietary habits of 30

N. L. Ferguson

1999-01-01

92

The Design of Protective Equipment for Ice Hockey  

Microsoft Academic Search

The major objectives of the research were to provide the apparel designer with informa tion about user needs with regard to protective equipment and to stimulate the devel opment of new apparel forms for protective materials. Hockey players were observed under game conditions to gather impact and body movement data. Impact data were related to medical literature and recommendations were

Susan M. Watkins

1977-01-01

93

Field Hockey; Lacrosse, June 1976-June 1978. NAGWS Guide.  

ERIC Educational Resources Information Center

This guide for field hockey and lacrosse is one in a series of guides for 22 sports published by the National Association for Girls and Women in Sport (NAGWS). Guides contain information on NAGWS-approved playing rules, officials' ratings, articles on teaching, coaching and organization, regulations governing national championships,…

Nixon, Linda K., Ed.; Hess, Eleanor Kay, Ed.

94

Hypothenar hammer syndrome from ice hockey stick-handling.  

PubMed

Ulnar artery thrombosis and hypothenar hammer syndrome are rare vascular complications that could potentially occur with repeated blows or trauma to the hand. Although initially reported as an occupational hazard among laborers and craftsmen, it has been observed more recently among recreationalists and athletes. Until now, it has never been reported as a complication in ice hockey players. In this case report, a 26-year-old Canadian professional ice hockey player presented with acute dominant right hand paleness, coolness, and pain with hand use. The patient used a wooden hockey stick with a large knob of tape at the end of the handle, which he regularly gripped in the palm of his right hand to help with face-offs and general stick-handling. Sonographic evaluation demonstrated no arterial flow in the distal right ulnar artery distribution, and ulnar artery occlusion with no aneurysmal degeneration was confirmed by magnetic resonance angiogram. Intraarterial thrombolytic therapy was initiated, and subsequent serial angiograms demonstrated significant improvement in distal ulnar artery flow as well as recanalization of right hand deep palmar arch and digital arteries. The patient's symptoms resolved, and he was maintained on therapeutic anticoagulation for 3 months prior to returning to playing ice hockey professionally, but with a padded glove and no tape knob at the handle tip. This case highlights a unique presentation of hockey stick-handling causing ulnar artery thrombosis that was likely from repeated palmar hypothenar trauma. Appropriate diagnostic imaging, early intraarterial thrombolysis, and postoperative surveillance and follow-up were crucial for the successful outcome in this patient. PMID:23988538

Zayed, Mohamed A; McDonald, Joey; Tittley, Jacques G

2013-11-01

95

Position Statement. Violence and injury in ice hockey.  

PubMed

Ice hockey is a sport enjoyed by many men and women at the spectator and participant level. It is played with high intensity and often involves body contact. Although the women's games is far from injury free, it is the men's game that has drawn criticism for excessive violence. Much attention has been drawn to the serious injuries that have occurred in ice hockey, specifically spinal injuries, concussions, and eye injuries. Many such injuries are the result of illegal and violent acts such as checking from behind or a deliberate high stick. Because of this, some medical organizations have called for changes in the sport, such as minimum age requirements for body-checking. As a practical matter such changes are unlikely to be accepted by hockey governing boards. Many of those involved in the sport consider body-checking a fundamental component of the game. Furthermore, a distinction needs to be made between any kind of injury and a serious, catastrophic injury. For example, although a recent study found that body-checking accounted for up to 38% of ice hockey injuries, none were of the catastrophic type. With respect to catastrophic injuries such as spinal cord trauma or a blinded eye, legal body-checking accounts for significantly less than illegal body-checking (e.g., checking from behind) or violent stick work. To reduce serious injury in ice hockey, we offer 10 recommendations, key among them automatic game suspensions for certain rules violations, and recognition of the coach as the most important figure in promoting a clean, safe game. PMID:11854591

Juhn, Mark S; Brolinson, Per Gunnar; Duffey, Timothy; Stockard, Alan; Vangelos, Zenos A; Emaus, Erik; Maddox, Matthew; Boyajian, Lori; Henehan, Michael

2002-01-01

96

Atlantic University Field Hockey League Tournament #2 @ UPEI 2014 The Atlantic University Field Hockey League is comprised of teams from Acadia, Dalhousie, Saint  

E-print Network

Atlantic University Field Hockey League Tournament #2 @ UPEI 2014 The Atlantic University Field Hockey League is comprised of teams from Acadia, Dalhousie, Saint Mary's, St Frances Xavier, University: 1. UPEI 1 vs SMU 1 UPEI goal: Lacey MacLauchlan SMU Goal: Brittany Avery 2. STFX 4 vs MTA 0 STFX

Brownstone, Rob

97

Atlantic University Field Hockey League Tournament #1 @ SMU/DAL 2014 The Atlantic University Field Hockey League is comprised of teams from Acadia, Dalhousie, Saint  

E-print Network

Atlantic University Field Hockey League Tournament #1 @ SMU/DAL 2014 The Atlantic University Field Hockey League is comprised of teams from Acadia, Dalhousie, Saint Mary's, St Frances Xavier, University STFX 2 20. UNB 1 vs DAL 0 21. UPEI 4 vs ACA 0 #12;Game Stats: 1. SMU 0 vs UPEI 1 UPEI goal: Ashley

Brownstone, Rob

98

Intentional versus unintentional contact as a mechanism of injury in youth ice hockey  

Microsoft Academic Search

BackgroundYouth ice hockey injury rates and mechanisms have been described by various classification systems. Intentional versus unintentional contact was used to classify mechanisms of injuries. All injuries (n=247) in one youth hockey programme over a 5-year period were recorded and included in the analysis.PurposeTo evaluate youth ice hockey injuries and compare programmes that allow body checking versus programmes that do

Scott R Darling; Douglas E Schaubel; John G Baker; John J Leddy; Leslie J Bisson; Barry Willer

2011-01-01

99

National Hockey League players from North America are more violent than those from Europe.  

PubMed

It is commonly believed by hockey fans that European hockey players rely more on skill while. North American players are more violent. The number of penalty minutes gathered by European and North American players in the National Hockey League's 1995-1996 season was examined. When corrected for the low proportion of European players, North American players had significantly more penalty minutes than European players. PMID:8902034

Grossman, S; Hines, T

1996-10-01

100

National survey of spinal injuries in hockey players.  

PubMed

There has been an alarming increase in the number of spinal injuries in hockey players. Between 1976 and 1983, 42 were reported to the Committee on Prevention of Spinal Injuries due to Hockey. The median age of the injured players was 17 years. Of the 42 players 28 had spinal cord injuries, and 17 of them had complete paralysis below the vertebral level of the injury. Strikes from behind and collisions with the boards were common mechanisms of injury. Many of the players had suffered a burst fracture of the cervical spine following a blow to the top of the helmet when the neck was slightly flexed. The committee studied a number of possible etiologic factors and made several recommendations regarding prevention. League officials, coaches, players and equipment manufacturers can all play a role in prevention. PMID:6704840

Tator, C H; Edmonds, V E

1984-04-01

101

[A systematic approach to the study of violence in hockey].  

PubMed

All across Canada, numerous studies every year are being terminated prematurely or simply stored without recognition. Perceived non-significance and a silent and timid approach are among the factors which contribute to the lack of attention to the author's conclusions and recommendations. Therefore the "Comité d'étude sur la violence au hockey amateur au Québec" (CEVH) decided upon a systematic approach to get the interest of specialists and the general public during the entire duration of the investigation. As such, the recommendations were supported by scientific data as well as by public opinion. This approach (POLITICAL TACTIC) resulted in the implementation of more than 80% of the 78 recommendations in less than 6 months after the presentation of the Report. This very season in Quebec amateur hockey, fundamental changes occured. PMID:519836

Neron, G E

1979-06-01

102

Personal food systems of male college hockey players  

Microsoft Academic Search

This study sought to improve the understanding of processes involved in food choice and dietary change by examining how members of a college men's ice hockey team experienced the multiple factors influencing their food choices. The study employed a theory-guided, grounded-theory approach, participant observation, and open-ended interviews with ten team members. Field notes and transcripts were analysed using the constant

L. Ryan Smart; Carole A. Bisogni

2001-01-01

103

The Evolution of Subtle Manoeuvres in Simulated Hockey  

Microsoft Academic Search

A simulated hockey environment is introduced as atest bed for studying adaptive behavior and evolutionof robot controllers. A near-frictionless playing surfaceis employed, partially mimicking zero gravity conditions.We show how a neural network using a simpleevolutionary algorithm can develop nimble strategiesfor moving about the rink and scoring goals quicklyand effectively.1. IntroductionIn recent years, there has been growing interest in usingmachine learning

Alan D. Blair Elizabeth Sklar

1998-01-01

104

A fuzzy based hierarchical coordination and control system for a robotic agent team in the robot Hockey competition  

Microsoft Academic Search

This paper presents the system used by the team of the German University in Cairo (GUC) within the FESTO Hockey Challenge league that took place within RoboCup 2009. The goal of the FESTO Hockey Challenge is to have a competition between robotic teams where each team consists of three robots to compete in an Ice Hockey game. All robots are

H. Hagras; R. Ramadan; M. Nawito; H. Gabr; M. Zaher; H. Fahmy

2010-01-01

105

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN WOMEN'S ICE HOCKEYWESLEYAN WOMEN'S ICE HOCKEY  

E-print Network

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN WOMEN'S ICE HOCKEYWESLEYAN WOMEN'S ICE HOCKEY #12......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black Intramural........................Phil Carney Women's Crew...................Pat Tynan M/W Cross Country ...........John Crooke Field Hockey

Devoto, Stephen H.

106

Laterality differences in elite ice hockey: An investigation of shooting and catching orientations  

Microsoft Academic Search

Little is known about the implications of motor asymmetries for skilled performers in dynamic, time-constrained, team-based activities such as ice hockey. Three studies were conducted to examine laterality differences in ice hockey. Study 1 investigated laterality distributions across three leagues of increasing calibre. Among skating players, skill level was related to changes in laterality patterns based on position, while a

Jared Puterman; Joseph Baker; Jörg Schorer

2010-01-01

107

Lesbian Erotics at Women's Hockey: Fans, Flashing, and the Booby Orrs  

Microsoft Academic Search

This article analyzes a public breast flashing event that occurred during the women's ice hockey tournament at the OutGames\\/Western Cup Lesbigay athletic event in 2007. Employing a postfoundational perspective, I first contextualize the ice hockey subculture of the team called the Booby Orrs, outlining some of our history, norms, and context. I then tell the particular story that leads to

Judy Davidson

2009-01-01

108

The Relationship of Various Psychosocial Variables on the Positioning of College Ice Hockey Players.  

ERIC Educational Resources Information Center

This paper presents the results of research conducted to investigate the relationship of various psychosocial variables on the positioning of college ice hockey players. The California Personality Inventory (CPI) was administered to the NCAA Championship ice hockey team at the University of Minnesota, and a separate subjective psychosocial rating…

Krotee, March L.; La Point, James D.

109

Aggression, Performance Variables, and Anger Self-Report in Ice Hockey Players  

Microsoft Academic Search

This study partially replicated a former one showing a relationship between aggression and performance among hockey players. With certain penalties used as a measure of aggression, two groups of male college ice hockey players were compared for differences in goals and assists. Those rated high in aggression scored significantly more goals than those low in aggression. The direction of differences

John F. McCarthy; Bryan R. Kelly

1978-01-01

110

Canadian Amateur Hockey by the Year 2000: Projected Problems and Priority Goals  

Microsoft Academic Search

The purpose of the study was to develop a long-range projection of future prob lems and objectives in Canadian amateur hockey. Such a study, it was thought, could facilitate planning processes for Canadian political organizations concerned with the development and administration of amateur hockey. A modified version of the Delphi technique, a technique developed at the Rand Corporation in Santa

Louis-Philippe Nault

1978-01-01

111

Somatic and functional variables determining game efficiency of ice hockey players  

Microsoft Academic Search

Ice hockey is a sport discipline, in which championship performance is mainly determined by functional features and somatic variables. The main goal of this paper was the estimation of values of basic somatic features and selected fitness variables, as well as their relationships, in ice hockey players of different level. The research was carried out on members of national teams,

Teresa Socha; Tomasz Skowronek; Stanislaw Socha

2006-01-01

112

THE COMPETITIVE DEMANDS OF ELITE MALE RINK HOCKEY  

PubMed Central

The aim of this study was to simulate the activity pattern of rink hockey by designing a specific skate test (ST) to study the energy expenditure and metabolic responses to this intermittent high-intensity exercise and extrapolate the results from the test to competition. Six rink hockey players performed, in three phases, the 20-metre multi-stage shuttle roller skate test, a tournament match and the ST. Heart rate was monitored in all three phases. Blood lactate, oxygen consumption, ventilation and respiratory exchange ratio were also recorded during the ST. Peak HR was 190.7±7.2 beats · min?1. There were no differences in peak HR between the three tests. Mean HR was similar between the ST and the match (86% and 87% of HRmax, respectively). Peak and mean ventilation averaged 111.0±8.8 L · min?1 and 70.3±14.0 L · min?1 (60% of VEmax), respectively. VO2max was 56.3±8.4 mL · kg?1 · min?1, and mean oxygen consumption was 40.9±7.9 mL · kg?1 · min?1 (70% of VO2max). Maximum blood lactate concentration was 7.2±1.3 mmol · L-1. ST yielded an energy expenditure of 899.1±232.9 kJ, and energy power was 59.9±15.5 kJ · min?1. These findings suggest that the ST is suitable for estimating the physiological demands of competitive rink hockey, which places a heavy demand on the aerobic and anaerobic systems, and requires high energy consumption. PMID:24744488

Del Valle, M.E.; Egocheaga, J.; Linnamo, V.; Fernández, A.

2013-01-01

113

Relationship between hockey skating speed and selected performance measures.  

PubMed

The objective of this study was to determine the relationship between specific performance measures and hockey skating speed. Thirty competitive secondary school and junior hockey players were timed for skating speed. Off-ice measures included a 40-yd (36.9-m) sprint, concentric squat jump, drop jump, 1 repetition maximum leg press, flexibility, and balance ratio (wobble board test). Pearson product moment correlations were used to quantify the relationships between the variables. Electromyographic (EMG) activity of the dominant vastus lateralis and biceps femoris was monitored in 12 of the players while skating, stopping, turning, and performing a change-of-direction drill. Significant correlations (p < 0.005) were found between skating performance and the sprint and balance tests. Further analysis demonstrated significant correlations between balance and players under the age of 19 years (r = -0.65) but not those over 19 years old (r = -0.28). The significant correlations with balance suggested that stability may be associated with skating speed in younger players. The low correlations with drop jumps suggested that short contact time stretch-shortening activities (i.e., low amplitude plyometrics) may not be an important factor. Electromyographic activities illustrated the very high activation levels associated with maximum skating speed. PMID:15903370

Behm, David G; Wahl, Michael J; Button, Duane C; Power, Kevin E; Anderson, Kenneth G

2005-05-01

114

Personality and Injury Risk Among Professional Hockey Players  

PubMed Central

Abstract: Background: Although much is known about risk for athletic injury, research on the roles of individual differences in personality and temperament on athletic injury has lagged. We hypothesized that professional athletes with high sensation-seeking and extraversion scores, and with low effortful control scores, would experience more injuries over the course of a season, would have more severe injuries, and would miss more total days of play. Methods: Prospective design with questionnaire report at time one and injury tracking throughout an 18-week athletic season. Setting: Professional hockey team in the United States. Participants: Eighteen professional hockey players (ages 21-33). Measurement: Players completed self-report personality (Sensation-Seeking Scale, Form V) and temperament (the Adult Temperament Questionnaire) measures. Quantity and severity of injury, as well as playing time missed, were tracked for 18 weeks. Results: On average, players experienced almost 6 injuries causing a loss of 10 playing days through the season. Those players scoring high on Boredom Susceptibility and Total Sensation-Seeking incurred more total injuries. Those scoring high on temperamental neutral perceptual sensitivity suffered more severe injuries. Conclusions: Athletes who suffered more injuries reported a preference for stimulating environments and boredom with non-stimulating environments. Injury severity was not correlated with sensation-seeking but was related to temperamental perceptual sensitivity. Implications for identification of injury-prone athletes, pre-injury training, and post-injury treatment are discussed. PMID:21483186

Osborn, Zachary H; Blanton, Paul D; Schwebel, David C

2009-01-01

115

Motion Fields to Predict Play Evolution in Dynamic Sport Scenes Kihwan Kim1  

E-print Network

actions and in- teractions are complex as they are driven by many factors, such as the short-term goals Gretsky, the legendary hockey player, "A good hockey player plays where the puck is. A great hockey player

Haro, Antonio

116

The Three People You'll Meet at a Hockey Game  

E-print Network

members use to assign roles and reframe actions EX: "Sieve" #12;Restatements A blatant vocalization and players organize for puck drop] Band: (begins to play "charge") Crowd: (hold right hand in the air) Oh New Way Three Types Spectators: Do not vocalize favor of one team over another Fans: Vocalize

New Hampshire, University of

117

Checking in: an analysis of the (lack of) body checking in women's ice hockey.  

PubMed

Despite the growing popularity of women's ice hockey in North America, players continue to face limitations because of the prohibition of body checking. In this paper we argue from a liberal feminist philosophical perspective that this prohibition reinforces existing traditional stereotypes of female athletes. Because the women's game does not incorporate checking, female ice hockey players are not afforded the same opportunity to flourish as men and experience bodily agency, which results in continued male domination of the game, therefore, indirectly reinforcing a gender hierarchy in hockey and society. PMID:22978197

Weaving, Charlene; Roberts, Samuel

2012-09-01

118

Sports chiropractic management at the World Ice Hockey Championships  

PubMed Central

Background Ice hockey is an international sport. Injuries occur in a full body fashion, to a number of tissues, commonly through body contact. There is a lack of literature documenting the scope of sports chiropractic practice. Thus, it was the aim to document the type, scope and severity of conditions presenting to, and the treatment provided by, the New Zealand team chiropractor acting as a primary health provider for the duration of the 2007 World Ice Hockey Championships. Methods All conditions presenting were recorded. Diagnosis was recorded along with clinical parameters of injury: injury type, severity, mechanism and whether referral or advanced imaging was required. All treatment provided was continuously recorded, including information on the number of treatments required and the reason, duration, type and location of treatment. Results Players presented for diagnosis of injury 50 times. Muscle (34%), joint (24%) and tendon injuries (18%) were most common. Players presented with a new injury 76% of the time. Most injuries had been present for less than one week (84%), with 53% occurring through a contact mechanism. Injuries were common at training and match locations. Only two injuries required the player to stop playing or training, both of which were referred for advanced imaging. During the study, 134 treatment consultations were rendered to 45 player injuries. Eighty per-cent of injuries were managed with four or less treatments. Three quarters of treatment was provided at training locations with treatment duration predominantly being between 11-15 minutes (71%) and 16-20 minutes (27%). Most treatment delivered was passive in nature (71%) although combination active and passive care was provided (27%). Treatment typically involved joint (81%) and soft tissue based therapies (81%) and was delivered in a full body manner. Conclusions This study documented the injury profile of ice hockey at an international level of competition. It documented the conditions presenting to a chiropractor for diagnosis and the treatment provided. Treatment was consistent with that recommended for chiropractic management of athletic injuries. This documentation of sports chiropractic scope of practice fills a void in the literature and assists in determining a role for sports chiropractors as primary health providers or in multidisciplinary sports management teams. PMID:21129212

2010-01-01

119

The effect of a complex training program on skating abilities in ice hockey players.  

PubMed

[Purpose] Little data exist on systemic training programs to improve skating abilities in ice hockey players. The purpose of this study was to evaluate the effectiveness of a complex training program on skating abilities in ice hockey players. [Methods] Ten male ice hockey players (training group) that engaged in 12 weeks of complex training and skating training and ten male players (control group) that only participated in 12 weeks of skating training completed on-ice skating tests including a 5 time 18 meters shuttle, t-test, Rink dash 5 times, and line drill before, during, and the training. [Results] Significant group-by-time interactions were found in all skating ability tests. [Conclusion] The complex training program intervention for 12 weeks improved their skating abilities of the ice hockey players. PMID:24764628

Lee, Changyoung; Lee, Sookyung; Yoo, Jaehyun

2014-04-01

120

The Ice Hockey Injury An Interrupted Case Study  

NSDL National Science Digital Library

The high school ice hockey team is playing the last of three games in one day. The game gets rough and Rick, the star player, is slammed against the boards. Injured, he has to be  escorted from the ice. This interrupted case study follows Ricks health as it deteriorates over the next few hours. Students are presented with Rick’s symptoms and use their knowledge of anatomy and physiology to diagnose the problem. The case was developed for a one-semester animal physiology course taken mostly by sophomore and junior biology or general science majors. It could also be used in a freshman general biology course, anatomy and physiology course, or human physiology course for non-science majors.

Phil Stephens

2004-01-01

121

Institutionalized rule violation and control in organized minor league hockey.  

PubMed

In minor league hockey, rule violation including the illegitimate use of force is institutionalized behaviour. Illegitimate tactics are among the minimal general criteria for the assessment and selection of players. No formal mechanism operates to socialize players to obey normative rules. The "official" control system is ineffective in preventing normative rule violation. However, it regulates the game according to constitutive rules preventing its disorganization, and creates the impression that players actually govern their conduct according to normative rules. An informal control system (combative and aggressive in orientation) legitimizes and regulates the amount and kinds of rule violation occurring, and highlights collective meanings of the occupation. A scheme is presented for reducing institutionalized rule violation. Team success (victory) and rule conformity are considered desirable and are rewarded. What value to assign these two "things" remains problematic. To avoid undermining motivation to win the contest, more value must be assigned team success than rule conformity. The question is how much more. PMID:498408

Vaz, E W

1979-03-01

122

NHL.com: The National Hockey League Web Site  

NSDL National Science Digital Library

The NHL's official site is a good place to start for anyone interested in the professional version of Canada's national pastime. Unfortunately, the site doesn't contain an archive of boxscores and/or recaps of all games. However, extensive boxes and recaps are provided for the latest games. Updated statistics are available on a wide variety of team and individual variables, and information is available on the various teams. But what really makes this site interesting are the "Cool Shots" section (8 multimedia highlights from the previous week's play--archived back to the beginning of the season), and "Feature Files," a potpourri of information including weekly reviews, instruction, and special features highlighted by "A Day in the Life of the National Hockey League," a photo essay of the NHL on March 23, 1996.

123

TIME-MOTION ANALYSIS OF ICE-HOCKEY SKILLS DURING GAMES  

Microsoft Academic Search

Time-motion analysis (TMA) has been performed for a variety of sporting activities, including ice-hockey. However, these previous TMA studies on ice-hockey have not differentiated between playing levels and\\/or playing positions. It is the main goal of this study to establish if differences exist between the skills most frequently performed by players of the various positions during actual competition (forwards, defensemen

Dany Lafontaine; Mario Lamontagne; Kelly Lockwood

124

Development of hydroacoustical techniques for the monitoring and classification of benthic habitats in Puck Bay: Modeling of acoustic waves scattering by seagrass  

NASA Astrophysics Data System (ADS)

Puck Bay is an area of high species biodiversity belonging to the Coastal Landscape Park of Baltic Sea Protected Areas (BSPA) and is also included in the list of the World Wide Fund for Nature (WWF) and covered by the protection program "Natura 2000". The underwater meadows of the Puck Bay are important for Europe's natural habitats due to their role in enhancing the productivity of marine ecosystems and providing shelter and optimal feeding conditions for many marine organisms. One of the dominant species comprising the underwater meadows of the Southern Baltic Sea is the seagrass Zostera marina. The spatial extent of underwater seagrass meadows is altered by pollution and eutrophication; therefore, to properly manage the area one must monitor its ecological state. Remote acoustic methods are useful tools for the monitoring of benthic habitats in many marine areas because they are non-invasive and allow researchers to obtain data from a large area in a short period of time. Currently there is a need to apply these methods in the Baltic Sea. Here we present an analysis of the mechanism of scattering of acoustic waves on seagrass in the Southern Baltic Sea based on the numerical modeling of acoustic wave scattering by the biological tissues of plants. The study was conducted by adapting a model developed on the basis of DWBA (Distorted Wave Born Approximation) developed by Stanton and Chu (2005) for fluid-like objects, including the characteristics of the Southern Baltic seagrass. Input data for the model, including the morphometry of seagrass leaves, their angle of inclination and the density plant cover, was obtained through the analysis of biological materials collected in the Puck Bay in the framework of a research project financed by the Polish Government (Development of hydroacoustic methods for studies of underwater meadows of Puck Bay, 6P04E 051 20). On the basis of the developed model, we have analyzed the dependence of the target strength of a single seagrass leaf and the strength of surface scattering from the orientation of the leaves relative to the direction of incidence of the acoustic wave. The influences of the acoustic properties of the biological plant tissue and acoustic frequency were also examined in regards to these dependencies. It was found that the target strength of the seagrass leaf depends on the angle of inclination relative to the direction of incidence of the acoustic wave; furthermore, target strength was found to be sensitive to the frequency of the wave and the value of density and speed sound contrasts. These parameters also affect the nature of the oscillations depending on the target strenght to the angle of inclination of sea grass leaves. We have also performed a prognosis of surface scattering strength variability for sea grass meadows of Zostera marina in Puck Bay. The results obtained in this study are important for interpretation of acoustic measurements carried out in the underwater meadows of Puck Bay. Thus, they contribute to the development of non-invasive and fast acoustic monitoring methods.

Raczkowska, A.; Gorska, N.

2012-12-01

125

Evaluation of the ThinkFirst Canada, Smart Hockey, brain and spinal cord injury prevention video  

PubMed Central

Objective: The ThinkFirst Canada Smart Hockey program is an educational injury prevention video that teaches the mechanisms, consequences, and prevention of brain and spinal cord injury in ice hockey. This study evaluates knowledge transfer and behavioural outcomes in 11–12 year old hockey players who viewed the video. Design: Randomized controlled design. Setting: Greater Toronto Minor Hockey League, Toronto Ontario. Subjects: Minor, competitive 11–12 year old male ice hockey players and hockey team coaches. Interventions: The Smart Hockey video was shown to experimental teams at mid-season. An interview was conducted with coaches to understand reasons to accept or refuse the injury prevention video. Main outcome measures: A test of concussion knowledge was administered before, immediately after, and three months after exposure to the video. The incidence of aggressive penalties was measured before and after viewing the video. Results: The number of causes and mechanisms of concussion named by players increased from 1.13 to 2.47 and from 0.67 to 1.22 respectively. This effect was maintained at three months. There was no significant change in control teams. There was no significant change in total penalties after video exposure; however, specific body checking related penalties were significantly reduced in the experimental group. Conclusion: This study showed some improvements in knowledge and behaviours after a single viewing of a video; however, these findings require confirmation with a larger sample to understand the sociobehavioural aspects of sport that determine the effectiveness and acceptance of injury prevention interventions. PMID:14693901

Cook, D; Cusimano, M; Tator, C; Chipman, M; Macarthur, C

2003-01-01

126

Intramural 6v6 Floor Hockey League **Please refer to the Captain's Manual for a complete list of all Intramural Sport guidelines & procedures**  

E-print Network

/ice hockey per roster. F. Player Positioning A. The goalie may leave the goal crease, but while outside the Intramural 6v6 Floor Hockey League **Please refer to the Captain's Manual for a complete list

Almor, Amit

127

Ice friction of flared ice hockey skate blades.  

PubMed

In ice hockey, skating performance depends on the skill and physical conditioning of the players and on the characteristics of their equipment. CT Edge have recently designed a new skate blade that angles outward near the bottom of the blade. The objective of this study was to compare the frictional characteristics of three CT Edge blades (with blade angles of 4 degrees, 60, and 8 degrees, respectively) with the frictional characteristics of a standard skate blade. The friction coefficients of the blades were determined by measuring the deceleration of an aluminium test sled equipped with three test blades. The measurements were conducted with an initial sled speed of 1.8 m s(-1) and with a load of 53 kg on each blade. The friction coefficient of the standard blades was 0.0071 (s = 0.0005). For the CT Edge blades with blade angles of 4 degrees, 6 degrees, and 8 degrees, friction coefficients were lower by about 13%, 21%, and 22%, respectively. Furthermore, the friction coefficients decreased with increasing load. The results of this study show that widely accepted paradigms such as "thinner blades cause less friction" need to be revisited. New blade designs might also be able to reduce friction in speed skating, figure skating, bobsledding, and luge. PMID:18608838

Federolf, Peter A; Mills, Robert; Nigg, Benno

2008-09-01

128

Many roads lead to Rome--developmental paths to Olympic gold in men's field hockey.  

PubMed

This study examined the developmental sporting activities of the Olympic Champions 2012 in men's field hockey. The volume of organised practice/training and non-organised sporting leisure play in both field hockey and other sports through childhood, adolescence and adulthood was examined and compared between the Olympic Champions and (1) current national class players and (2) international medallists of one decade earlier. Analyses revealed that the Olympic Champions performed moderate volumes of organised field hockey practice/training throughout their career and attained their first international senior medal after accumulating 4393 ± 1389 practice/training hours, but they engaged in extensive other sporting activities during childhood and youth. It took them 18 ± 3 years of involvement to attain an international medal and they had engaged for 22 ± 3 years when winning the Olympic gold medal. The Olympic Champions did not differ from national class players in the amount of hockey-specific practice/training, but in greater amounts of organised involvement in other sports and later specialisation. They differed from the international medallists of one decade earlier in less increase of organised hockey-specific practice/training during adulthood and a longer period of involvement until attaining their first international medal. The sporting activities were characterised by sizeable interindividual variation within each subsample. The findings are reflected against the deliberate practice and Developmental Model of Sports Participation (DMSP) frameworks and are discussed with reference to the concept of long-term sustainability. PMID:24707887

Güllich, Arne

2014-01-01

129

Effects of a Four Week Plyometric Training Program on Measurements of Power in Male Collegiate Hockey Players: 1429  

Microsoft Academic Search

EFFECTS OF A FOUR WEEK PLYOMETRIC TRAINING PROGRAM ON MEASUREMENTS OF POWER IN MALE COLLEGIATE HOCKEY PLAYERS. Reyment, Corey M., Bonis, Megan E., Lundquist, Jacob C., Tice, Brent S. Effects of a Four Week Plyometric training Program on Measurements of Power in Male Collegiate Hockey Players. J. Undergrad. Kin. Res. 2006; 1(2): 44-62. The purpose of this study was to

Corey M. Reyment; Megan E. Bonis; Jacob C. Lundquist; Lance C. Dalleck; Jeffrey M. Janot

2007-01-01

130

Gender Differences in Head Impacts Sustained by Collegiate Ice Hockey Players  

PubMed Central

Purpose This study aims to quantify the frequency, magnitude, and location of head impacts sustained by male and female collegiate ice hockey players over two seasons of play. Methods Over two seasons, 88 collegiate athletes (51 female, 37 male) on two female and male NCAA varsity ice hockey teams wore instrumented helmets. Each helmet was equipped with 6 single-axis accelerometers and a miniature data acquisition system to capture and record head impacts sustained during play. Data collected from the helmets were post-processed to compute linear and rotational acceleration of the head as well as impact location. The head impact exposure data (frequency, location, and magnitude) were then compared across gender. Results Female hockey players experienced a significantly lower (p < 0.001) number of impacts per athlete exposure than males (female: 1.7 ± 0.7; male: 2.9 ± 1.2). The frequency of impacts by location was the same between gender (p > 0.278) for all locations except the right side of the head, where males received fewer impacts than females (p = 0.031). Female hockey players were 1.1 times more likely than males to sustain an impact less than 50 g while males were 1.3 times more likely to sustain an impact greater than 100 g. Similarly, males were 1.9 times more likely to sustain an impact with peak rotational acceleration greater than 5,000 rad/s2 and 3.5 times more likely to sustain an impact greater than 10,000 rad/s2. Conclusions Although the incidence of concussion has typically been higher for female hockey players than male hockey players, female players sustain fewer impacts and impacts resulting in lower head acceleration than males. Further study is required to better understand the intrinsic and extrinsic risk factors that lead to higher rates of concussion for females that have been previously reported. PMID:21716150

Brainard, Lindley L.; Beckwith, Jonathan G.; Chu, Jeffrey J.; Crisco, Joseph J.; McAllister, Thomas W.; Duhaime, Ann-Christine; Maerlender, Arthur C.; Greenwald, Richard M.

2013-01-01

131

Lesbian erotics at women's hockey: fans, flashing, and the Booby Orrs.  

PubMed

This article analyzes a public breast flashing event that occurred during the women's ice hockey tournament at the OutGames/Western Cup Lesbigay athletic event in 2007. Employing a postfoundational perspective, I first contextualize the ice hockey subculture of the team called the Booby Orrs, outlining some of our history, norms, and context. I then tell the particular story that leads to our fans flashing their breasts as we finally scored some goals. I end with my analysis of this event: how a public nude display of sexualized women's breasts in a lesbian-coded public space prompted a resistant sporting moment, at least contingently. PMID:19598052

Davidson, Judy

2009-01-01

132

Patients With Ice Hockey Injuries Presenting to US Emergency Departments, 1990–2006  

PubMed Central

Abstract Context: Although the number of US ice hockey participants doubled from 1990 to 2006, no nationally representative studies have examined US ice hockey injuries among participants of all ages during this period. Objective: To describe patients with ice hockey injuries presenting to a representative sample of US emergency departments (EDs) from 1990 through 2006. Design: Prospective injury surveillance study. Setting: The US Consumer Product Safety Commission collects data from 100 nationally representative EDs via the National Electronic Injury Surveillance System (NEISS). Patients or Other Participants: Individuals injured while playing ice hockey and presenting to a NEISS-affiliated ED from 1990 through 2006. Main Outcome Measure(s): Incidence and patterns of ice hockey–related injuries. Results: From 1990 through 2006, 8228 patients with ice hockey–related injuries presented to NEISS-affiliated EDs, representing an estimated 302?368 ice hockey–related injuries sustained nationally during this time. Injuries occurred predominantly among males (93.5%). More than half of the injured were aged 9 to 14 years (28.9%) or 15 to 18 years (30.1%), and injury incidence in these age groups increased over the study period (P ?=? .009 and P < .001, respectively). The most commonly injured body sites were the face (19.1%), wrist/hand/finger (14.1%), shoulder/upper arm (13.8%), and lower leg/ankle/foot (11.1%). Lacerations (27.0%), contusions/abrasions (23.6%), fractures (17.3%), and sprains/strains (16.9%) were the most common injuries. Falls (16.5%), contact with boards (13.6%), and contact with stick (13.0%) were the most common injury mechanisms. Compared with those aged 9 to 18 years, those aged 2 to 8 years and those older than 18 years sustained larger proportions of face (injury proportion ratio [IPR] ?=? 2.66; 95% confidence interval [CI] ?=? 2.29, 3.08) and mouth (IPR ?=? 4.34; 95% CI ?=? 2.87, 6.56) injuries. Concussions were more common among those aged 2 to 18 years (9.0%) than in those who were older than 18 years (3.7%) (IPR ?=? 2.47; 95% CI ?=? 1.75, 3.49). Conclusions: Ice hockey injury patterns vary by age and sex. Our findings indicate that many trips to the ED might be prevented by using protective equipment appropriately. PMID:20831391

Deits, Jeff; Yard, Ellen E.; Collins, Christy L.; Fields, Sarah K.; Comstock, R. Dawn

2010-01-01

133

The past, present, and future of hockey-stick-shaped liquid crystals  

NASA Astrophysics Data System (ADS)

Recently, the liquid crystalline materials with a bent-core mesogen have attracted attentions because their interesting properties such as polarity and biaxiality of the mesophase. There are several types of bent-core mesogenic structures have been reported, for instance, banana-shaped, V-shaped molecules, boomerang-shaped, hockey stick-shaped, and Yshaped molecules. In this study, the liquid crystals and the reactive mesogens with the hockey-stick shaped mesogens will be described concerning with the structure-property relationship.

Choi, E.-Joon

2014-02-01

134

Complex training in ice hockey: the effects of a heavy resisted sprint on subsequent ice-hockey sprint performance.  

PubMed

The aim of the study was to investigate the acute effect of a heavy resisted sprint when used as a preload exercise to enhance subsequent 25-m on-ice sprint performance. Eleven competitive ice-hockey players (mean ± SD: Age = 22.09 ± 3.05 years; Body Mass = 83.47 ± 11.7 kg; Height = 1.794 ± 0.060 m) from the English National League participated in a same-subject repeated-measures design, involving 2 experimental conditions. During condition 1, participants performed a 10-second heavy resisted sprint on ice. Condition 2 was a control, where participants rested. An electronically timed 25-m sprint on ice was performed before and 4 minutes after each condition. The results indicated no significant difference (p = 0.176) between pre (3.940 + 0.258 seconds) and post (3.954 + 0.261 seconds) sprint times in the control condition. The intervention condition, however, demonstrated a significant 2.6% decrease in times (p = 0.02) between pre (3.950 + 0.251 seconds) and post (3.859 + 0.288 seconds) test sprints. There was also a significant change (p = 0.002) when compared to the times of the control condition. These findings appear to suggest that the intensity and duration of a single resisted sprint in this study are sufficient to induce an acute (after 4 minutes of rest) improvement in 25-m sprint performance on ice. For those athletes wishing to improve skating speed, heavy resisted sprints on ice may provide a biomechanically suitable exercise for inducing potentiation before speed training drills. PMID:20940636

Matthews, Martyn J; Comfort, Paul; Crebin, Robyn

2010-11-01

135

Ice Hockey vs. Ithaca College Sa 11/2 Women's Soccer Tournament Su 11/3  

E-print Network

Facilities Ice Hockey vs. Ithaca College Sa 11/2 Women's Soccer Tournament Su 11/3 Women A Ball Working Out! - FREE We 11/13 @ Noon Fitness & Wellness ARC CPR/AED for Prof. Rescuer - $95 Su 11 177 Outdoor Living Skills for Women CEO 180 Bicycling CEO 250 Canoeing CEO 251 Backcountry Medicine

Suzuki, Masatsugu

136

Describing Strategies Used by Elite, Intermediate, and Novice Ice Hockey Referees  

ERIC Educational Resources Information Center

Much is known about sport officials' decisions (e.g., anticipation, visual search, and prior experience). Comprehension of the entire decision process, however, requires an ecologically valid examination. To address this, we implemented a 2-part study using an expertise paradigm with ice hockey referees. Purpose: Study 1 explored the…

Hancock, David J.; Ste-Marie, Diane M.

2014-01-01

137

A test of motor skill-specific action embodiment in ice-hockey players.  

PubMed

To further our understanding of the role of the motor system in comprehending action-related sentences, we compared action experts (athletes) to visual experts (fans) and novices when responding with an action-specific effector (either hand or foot). These conditions allowed inferences about the degree and specificity of embodiment in language comprehension. Ice hockey players, fans and novices made speeded judgments regarding the congruence between an auditorily presented sentence and a subsequently presented picture. Picture stimuli consisted of either hockey or everyday items. Half of these pictures 'matched' the action implied in the preceding sentence. Further, the action in these images involved either primarily the hand or the foot. For everyday items, action-matched items were responded to faster than action-mismatched items. However, only the players and fans showed the action-match effect for hockey items. There were no consistent effector-stimuli compatibility effects, nor skill-based interactions with compatibility, suggesting that the action-match effect was not based on motor ability per se, but rather a construction of the action based on knowledge or visual experience with the hockey related sentences. PMID:24818535

Ong, Nicole T; Lohse, Keith R; Chua, Romeo; Sinnett, Scott; Hodges, Nicola J

2014-07-01

138

Combing Line and Point Correspondences to Calculate Homographies with Applications in Hockey Rink Registration  

Microsoft Academic Search

The goal of this project is to explore the use of a combination of line and point correspondences to improve the computation of homog- raphy transformations. The rink registration aspect of the UBC Hockey Tracking System currently uses only keypoint matches be- tween frames leaving the line information on the rink unutilized. The hypothesis is that use of line information

Elan Dubrofsky

139

Tracking and recognizing actions of multiple hockey players using the boosted particle filter  

Microsoft Academic Search

This article presents a system that can automatically track multiple hockey players and simultaneously recognize their actions given a single broadcast video sequence, where detection is complicated by a pan- ning, tilting, and zooming camera. There are three contributions. Firstly, we use the Histograms of Ori- ented Gradients (HOG) to represent the players, and introduce a probabilistic framework to model

Wei-lwun Lu; Kenji Okuma; James J. Little

2009-01-01

140

Computing and calibrating collision impulses and its application for air hockey game  

Microsoft Academic Search

In this paper, we calibrate Mirtich's approach (1996) for computing a collision impulse by two kinds of randomized algorithms, and then apply the model for an air hockey game. Mirtich proposed a smart dynamic simulation called impulse-based simulation. He considers twin goals of physical accuracy and computational efficiency. The simulation can accurately model complex dynamic system in real-time. However, whether

Toshiko Iguchi; Noriyuki Katsuyama; Hiroshi Noborio; Shinichi Hirai

2002-01-01

141

Performance Posting, Goal Setting, and Activity-Contingent Praise as Applied to a University Hockey Team  

Microsoft Academic Search

Rate of legal body checking (hit rate) was targeted for change for each of two consecutive seasons for a university hockey team that had a chronic losing record. Following baseline recording (A), the interventions of publicly posted individual feedback (B), goal setting (C), and praise (D) were successively introduced \\

D. Chris Anderson; Charles R. Crowell; Mark Doman; George S. Howard

1988-01-01

142

Laterality differences in elite ice hockey: an investigation of shooting and catching orientations.  

PubMed

Little is known about the implications of motor asymmetries for skilled performers in dynamic, time-constrained, team-based activities such as ice hockey. Three studies were conducted to examine laterality differences in ice hockey. Study 1 investigated laterality distributions across three leagues of increasing calibre. Among skating players, skill level was related to changes in laterality patterns based on position, while a significant increase in the proportion of left-catching goaltenders was found across the levels of competition. Study 2 examined laterality differences through a 90-year retrospective analysis of player performance measures within an evolving system. Regression analysis indicated right shot preferences were associated with scoring more goals, while left shot preferences were related to assisting more goals. Among goaltenders, right-catching preferences were associated with an increased save percentage compared with left-catching goaltenders. In Study 3, player-goaltender shootout interactions revealed left shooters to be less successful against right-catching goaltenders. Results suggest ice hockey supports models of skilled perception, and provide new information in the area of laterality and strategic frequency-dependent effects in ice hockey. PMID:21058167

Puterman, Jared; Schorer, Jörg; Baker, Joseph

2010-12-01

143

Ice Hockey Players Using a Weighted Implement when Training on the Ice: A Randomized Control Trial  

ERIC Educational Resources Information Center

The purpose of this study was to investigate the potential for improving hockey players' performance using a weighted implement on the ice. Forty-eight players were tested using a grip strength dynamometer. They also were assessed on their abilities to stick-handle. The participants were randomly placed into a control or research group. The…

Stark, Timothy W.; Tvoric, Bojan; Walker, Bruce; Noonan, Dom; Sibla, Janeene

2009-01-01

144

Checking in: An Analysis of the (Lack of) Body Checking in Women's Ice Hockey  

ERIC Educational Resources Information Center

Despite the growing popularity of women's ice hockey in North America, players continue to face limitations because of the prohibition of body checking. In this paper, we argue from a liberal feminist philosophical perspective that this prohibition reinforces existing traditional stereotypes of female athletes. Because the women's game does not…

Weaving, Charlene; Roberts, Samuel

2012-01-01

145

1Athletic Training & Sports Health Care | Vol. 5 No. X 2013 Enhancing Ice Hockey Skills Through  

E-print Network

1Athletic Training & Sports Health Care | Vol. 5 No. X 2013 Enhancing Ice Hockey Skills Through- ponent--wearing stroboscopic eyewear--to their normal rou- tines. [Athletic Training & Sports Health Care, MEd, FAAO ABSTRACT Recent research has suggested that a new sport training tool may enhance vision

Mitroff, Stephen

146

And a Hockey Game Broke Out: Crime and Punishment in the NHL  

Microsoft Academic Search

We apply the economic theory of crime to the National Hockey League. We analyze a natural experiment in which games during the 1999--2000 season had either one or two referees. We determine the effect of the number of referees on both the number of penalties called and the number of rules infractions committed by players. The results indicate that increasing

Jac C. Heckelman; Andrew J. Yates

2003-01-01

147

The Control of Externalities in Sports Leagues: An Analysis of Restrictions in the National Hockey League  

ERIC Educational Resources Information Center

This paper provides one of the few successful demonstrations of the efficiency of certain types of restrictions in the context of a joint venture. The joint venture we examine is the National Hockey League (NHL) in the 1980s, which was then composed of 21 separately owned teams. (It now has 30 teams.) The restriction we analyze is the NHL rule on…

Carlton, Dennis W.; Frankel, Alan S.; Landes, Elisabeth M.

2004-01-01

148

Support Based Measures Applied to Ice Hockey Scoring Summaries: Extended Version  

E-print Network

on the ice. While many statistics are available on the Internet for hockey players and teams in the National, data mining techniques are being applied to sports data [5, 8]. For example, IBM developed the Advanced Scout data mining software for analyzing basketball games by collecting statistics on shots attempted

Regina, University of

149

Validation of the FAST skating protocol to predict aerobic power in ice hockey players.  

PubMed

Few studies have reported a sport-specific protocol to measure the aerobic power of ice hockey players using a predictive process. The purpose of our study was to validate an ice hockey aerobic field test on players of varying ages, abilities, and levels. The Faught Aerobic Skating Test (FAST) uses an on-ice continuous skating protocol on a course measuring 160 feet (48.8 m) using a CD to pace the skater with a beep signal to cross the starting line at each end of the course. The FAST incorporates the principle of increasing workload at measured time intervals during a continuous skating exercise. Step-wise multiple regression modelling was used to determine the estimate of aerobic power. Participants completed a maximal aerobic power test using a modified Bruce incremental treadmill protocol, as well as the on-ice FAST. Normative data were collected on 406 ice hockey players (291 males, 115 females) ranging in age from 9 to 25 y. A regression to predict maximum aerobic power was developed using body mass (kg), height (m), age (y), and maximum completed lengths of the FAST as the significant predictors of skating aerobic power (adjusted R2 = 0.387, SEE = 7.25 mL.kg-1.min-1, p < 0.0001). These results support the application of the FAST in estimating aerobic power among male and female competitive ice hockey players between the ages of 9 and 25 years. PMID:17622284

Petrella, Nicholas J; Montelpare, William J; Nystrom, Murray; Plyley, Michael; Faught, Brent E

2007-08-01

150

Experiential Learning in the Introductory Class: The Role of Minor League Hockey in Teaching Social Psychology  

ERIC Educational Resources Information Center

To convince my students they are surrounded by social psychology, we attended a minor league hockey game. During the next class period I asked students to write a brief paragraph about their experiences. From those paragraphs I chose four reoccurring themes to analyze from a social psychological perspective. My introductory classes and I benefited…

Forrest, Krista D.

2005-01-01

151

SPORT & RECREATION SERVICES-FLOOR HOCKEY INTRAMURALS RELEASE OF LIABILITY, WAIVER OF CLAIMS,  

E-print Network

SPORT & RECREATION SERVICES-FLOOR HOCKEY INTRAMURALS RELEASE OF LIABILITY, WAIVER OF CLAIMS INJURY, DISABILITY, DEATH, DAMAGE TO PROPERTY OR LOSSES RESULTING THEREFROM. HEALTH CARE COVERAGE: I injury, disability, death, property damage or loss I may suffer as a result of my participation

Seldin, Jonathan P.

152

Physiological correlates of skating performance in women's and men's ice hockey.  

PubMed

The purpose of the current investigation was to identify relationships between physiological off-ice tests and on-ice performance in female and male ice hockey players on a comparable competitive level. Eleven women, 24 ± 3.0 years, and 10 male ice hockey players, 23 ± 2.4 years, were tested for background variables: height, body weight (BW), ice hockey history, and lean body mass (LBM) and peak torque (PT) of the thigh muscles, VO2peak and aerobic performance (Onset of Blood Lactate Accumulation [OBLA], respiratory exchange ratio [RER1]) during an incremental bicycle ergometer test. Four different on-ice tests were used to measure ice skating performance. For women, skating time was positively correlated (p < 0.05) to BW and negatively correlated to LBM%, PT/BW, OBLA, RER 1, and VO2peak (ml O2·kg(-1) BW(-1)·min(-1)) in the Speed test. Acceleration test was positively correlated to BW and negatively correlated to OBLA and RER 1. For men, correlation analysis revealed only 1 significant correlation where skating time was positively correlated to VO2peak (L O2·min(-1)) in the Acceleration test. The male group had significantly higher physiological test values in all variables (absolute and relative to BW) but not in relation to LBM. Selected off-ice tests predict skating performance for women but not for men. The group of women was significantly smaller and had a lower physiological performance than the group of men and were slower in the on-ice performance tests. However, gender differences in off-ice variables were reduced or disappeared when values were related to LBM, indicating a similar capacity of producing strength and aerobic power in female and male hockey players. Skating performance in female hockey players may be improved by increasing thigh muscle strength, oxygen uptake, and relative muscle mass. PMID:21785292

Gilenstam, Kajsa M; Thorsen, Kim; Henriksson-Larsén, Karin B

2011-08-01

153

Effectiveness of interventions to reduce aggression and injuries among ice hockey players: a systematic review  

PubMed Central

Background: The increasing incidence of injuries related to playing ice hockey is an important public health issue. We conducted a systematic review to evaluate the effectiveness of interventions designed to reduce injuries related to aggressive acts in ice hockey. Methods: We identified relevant articles by searching electronic databases from their inception through July 2012, by using Internet search engines, and by manually searching sports medicine journals, the book series Safety in Ice Hockey and reference lists of included articles. We included studies that evaluated interventions to reduce aggression-related injuries and reported ratings of aggressive behaviour or rates of penalties or injuries. Results: We identified 18 eligible studies. Most involved players in minor hockey leagues. Of 13 studies that evaluated changes in mandatory rules intended to lessen aggression (most commonly the restriction of body-checking), 11 observed a reduction in penalty or injury rates associated with rule changes, and 9 of these showed a statistically significant decrease. The mean number of penalties decreased by 1.2–5.9 per game, and injury rates decreased 3- to 12-fold. All 3 studies of educational interventions showed a reduction in penalty rates, but they were not powered or designed to show a change in injury rates. In 2 studies of cognitive behavioural interventions, reductions in aggressive behaviours were observed. Interpretation: Changes to mandatory rules were associated with reductions in penalties for aggressive acts and in injuries related to aggression among ice hockey players. Effects of educational and cognitive behavioural interventions on injury rates are less clear. Well-designed studies of multifaceted strategies that combine such approaches are required. PMID:23209118

Cusimano, Michael D.; Nastis, Sofia; Zuccaro, Laura

2013-01-01

154

Benefit of a Class-based Language Model for Real-time Closed -captioning of TV Ice-hockey Commentaries  

Microsoft Academic Search

This article describes the real-time speech recognition sy stem for closed-captioning of TV ice-hockey commentaries. Automatic tran- scription of TV commentary accompanying an ice-hockey match is usually a hard task due to the spontaneous speech of a commentator put often into a very loud background noise created by the public, music, siren, drums, whistle, etc. Data for building th is

Jan Hoidekr; J. V. Psutka

155

Aggression, performance variables, and anger self-report in ice hockey players.  

PubMed

This study partially replicated a former one showing a relationship between aggression and performance among hockey players. With certain penalties used as a measure of aggression, two groups of male college ice hockey players were compared for differences in goals and assists. Those rated high in aggression scored significantly more goals than those low in aggression. The direction of differences in assists was the same but did not reach significance. When the same groups were compared for shots on goals, significant differences were found, favoring the high aggressive group. This findings was discussed in light of energy output and efficiency. Attempts to relate performance and personality measures were not successful when comparisons on a self-report measure of anger were analyzed. PMID:650607

McCarthy, J F; Kelly, B R

1978-05-01

156

Injuries in competitive junior ice-hockey. 1437 players followed for one season.  

PubMed

During one season we followed 1437 ice-hockey players, 9-18 years of age, participating in a junior league. We found 128 injuries (9 percent) that caused the player to miss at least one training session or game. One third of the injuries were a result of foul play. The most common types of injury were contusions, sprains, and lacerations. However, fissures and fractures were surprisingly frequent, reflecting foul play with the stick and improper use of the protective equipment. Thanks to the mandatory use of a completely-covering face protector, there were few maxillofacial injuries. The highest yearly incidence of injuries was found in the older players. Prevention of ice hockey injuries is multifactorial, including stricter rule enforcement, improved protective equipment, and better understanding of the forces involved. PMID:8213128

Björkenheim, J M; Syvähuoko, I; Rosenberg, P H

1993-08-01

157

Head injuries in winter sports: downhill skiing, snowboarding, sledding, snowmobiling, ice skating and ice hockey.  

PubMed

Winter sports are often associated with high speed, which carries with it the potential for collision. As such, head injuries are among the more commonly encountered injuries in winter-related sporting activities. This article focuses on popular winter sports such as downhill skiing and snowboarding, sledding, snowmobiling, ice skating, and hockey. In virtually all of these activities, the incidence and severity of head injuries can be reduced by the use of appropriate protective headgear. PMID:18295099

Chaze, Brian; McDonald, Patrick

2008-02-01

158

Head injuries in winter sports: downhill skiing, snowboarding, sledding, snowmobiling, ice skating and ice hockey.  

PubMed

Winter sports are often associated with high speed, which carries with it the potential for collision. As such, head injuries are among the more commonly encountered injuries in winter-related sporting activities. This article focuses on popular winter sports such as downhill skiing and snowboarding, sledding, snowmobiling, ice skating, and hockey. In virtually all of these activities, the incidence and severity of head injuries can be reduced by the use of appropriate protective headgear. PMID:19084778

Chaze, Brian; McDonald, Patrick

2009-02-01

159

Cornell Hockey Cornell Overall Team Statistics (as of Dec 03, 2007)  

E-print Network

Cornell Hockey Cornell Overall Team Statistics (as of Dec 03, 2007) All games Overall: 7-3-1 Conf: 6-1-1 Home: 4-1-1 Away: 3-1-0 Neut: 0-1-0 TEAM STATISTICS COR OPP SHOT STATISTICS Goals-Shot attempts 32-255 18-257 Shot pct. .125 .070 Goals/Game 2.9 1.6 Shots/Game 23.2 23.4 Assists 51 33 POWER

Rodriguez, Carlos

160

Machiavellianism, Locus of Control, Aggression, Performance and Precautionary Behaviour in Ice Hockey  

Microsoft Academic Search

The sport of hockey served as a setting for the investigation of the relationships between both Machiavellianism and I-E locus of control and three behavioural indices of aggression. Physical aggression, challenge to authority, and total aggression were positively related to Mach V scores and I-E locus of control, the only exception being I-E and physical aggression. Goal scoring, as a

Gordon W. Russell

1974-01-01

161

Trends in North American newspaper reporting of brain injury in ice hockey.  

PubMed

The frequency and potential long-term effects of sport-related traumatic brain injuries (TBI) make it a major public health concern. The culture within contact sports, such as ice hockey, encourages aggression that puts youth at risk of TBI such as concussion. Newspaper reports play an important role in conveying and shaping the culture around health-related behaviors. We qualitatively studied reports about sport-related TBI in four major North American newspapers over the last quarter-century. We used the grounded-theory approach to identify major themes and then did a content analysis to compare the frequency of key themes between 1998-2000 and 2009-2011. The major themes were: perceptions of brain injury, aggression, equipment, rules and regulations, and youth hockey. Across the full study period, newspaper articles from Canada and America portrayed violence and aggression that leads to TBI both as integral to hockey and as an unavoidable risk associated with playing the game. They also condemned violence in ice hockey, criticized the administrative response to TBI, and recognized the significance of TBI. In Canada, aggression was reported more often recently and there was a distinctive shift in portraying protective equipment as a solution to TBI in earlier years to a potential contributing factor to TBI later in the study period. American newspapers gave a greater attention to 'perception of risks' and the role of protective equipment, and discussed TBI in a broader context in the recent time period. Newspapers from both countries showed similar recent trends in regards to a need for rule changes to curb youth sport-related TBI. This study provides a rich description of the reporting around TBI in contact sport. Understanding this reporting is important for evaluating whether the dangers of sport-related TBI are being appropriately communicated by the media. PMID:23613957

Cusimano, Michael D; Sharma, Bhanu; Lawrence, David W; Ilie, Gabriela; Silverberg, Sarah; Jones, Rochelle

2013-01-01

162

Trends in North American Newspaper Reporting of Brain Injury in Ice Hockey  

PubMed Central

The frequency and potential long-term effects of sport-related traumatic brain injuries (TBI) make it a major public health concern. The culture within contact sports, such as ice hockey, encourages aggression that puts youth at risk of TBI such as concussion. Newspaper reports play an important role in conveying and shaping the culture around health-related behaviors. We qualitatively studied reports about sport-related TBI in four major North American newspapers over the last quarter-century. We used the grounded-theory approach to identify major themes and then did a content analysis to compare the frequency of key themes between 1998–2000 and 2009–2011. The major themes were: perceptions of brain injury, aggression, equipment, rules and regulations, and youth hockey. Across the full study period, newspaper articles from Canada and America portrayed violence and aggression that leads to TBI both as integral to hockey and as an unavoidable risk associated with playing the game. They also condemned violence in ice hockey, criticized the administrative response to TBI, and recognized the significance of TBI. In Canada, aggression was reported more often recently and there was a distinctive shift in portraying protective equipment as a solution to TBI in earlier years to a potential contributing factor to TBI later in the study period. American newspapers gave a greater attention to ‘perception of risks’ and the role of protective equipment, and discussed TBI in a broader context in the recent time period. Newspapers from both countries showed similar recent trends in regards to a need for rule changes to curb youth sport-related TBI. This study provides a rich description of the reporting around TBI in contact sport. Understanding this reporting is important for evaluating whether the dangers of sport-related TBI are being appropriately communicated by the media. PMID:23613957

Cusimano, Michael D.; Sharma, Bhanu; Lawrence, David W.; Ilie, Gabriela; Silverberg, Sarah; Jones, Rochelle

2013-01-01

163

Penalty corner routines in elite women's indoor field hockey: prediction of outcomes based on tactical decisions.  

PubMed

Indoor hockey is a highly competitive international sport, yet no research to date has investigated the key actions within this sport. As with outdoor field hockey, penalty corners represent one of the most likely situations in which goals can be scored. All 36 matches of the round-robin phase of the 2010-2011 England Hockey League Women's Premier Division 'Super Sixes' competition were analysed with the purpose of establishing which factors can predict the scoring of a goal using binary logistic regression analysis. Seventy-two (22.6%) of the 319 observed penalty corners resulted in a goal. The strongest predictor of scoring a goal was taking the penalty corner from the goalkeeper's right. Based on the odds ratio (OR), the odds of the attacking team scoring were 2.27 (confidence interval (CI) = 1.41-3.65) times higher with penalty corners taken from the goalkeeper's right as opposed to the left. Additionally, if the goalkeeper decided to rush to the edge of the circle, the odds of the attacking team failing to score were 2.19 (CI = 1.18-4.08) times higher compared to when the goalkeeper remained near the goal line. These results suggest that strategic decisions from the players and coaches have an important part to play in the success of penalty corners. Future research should investigate the impact of goalkeepers' movement and further examine the technical and tactical intricacies of penalty corners. PMID:23305340

Vinson, Don; Padley, Simon; Croad, Alison; Jeffreys, Mark; Brady, Abbe; James, David

2013-01-01

164

The Hockey Stick and the Climate Wars: Dispatches From The Front Lines  

NASA Astrophysics Data System (ADS)

A central figure in the controversy over human-caused climate change has been The Hockey Stick, a simple, easy-to-understand graph my colleagues and I constructed to depict changes in Earth's temperature back to 1000 AD. The graph was featured in the high-profile Summary for Policy Makers of the 2001 report of the Intergovernmental Panel on Climate Change (IPCC), and it quickly became an icon in the debate over human-caused (anthropogenic) climate change. I will tell the story behind the Hockey Stick, using it as a vehicle for exploring broader issues regarding the role of skepticism in science, the uneasy relationship between science and politics, and the dangers that arise when special economic interests and those who do their bidding attempt to skew the discourse over policy-relevant areas of science. In short, I attempt to use the Hockey Stick to cut through the fog of disinformation that has been generated by the campaign to deny the reality of climate change. It is my intent, in so doing, to reveal the very real threat to our future that lies behind it.

Mann, M. E.

2011-12-01

165

Trends in reporting of mechanisms and incidence of hip injuries in males playing minor ice hockey in Canada: a cross-sectional study  

PubMed Central

Background There has been a noted increase in the diagnosis and reporting of sporting hip injuries and conditions in the medical literature but reporting at the minor hockey level is unknown. The purpose of this study is to investigate the trend of reporting hip injuries in amateur ice hockey players in Canada with a focus on injury type and mechanism. Methods A retrospective review of the Hockey Canada insurance database was performed and data on ice hockey hip injuries reported between January 2005 and June 2011 were collected. The study population included all male hockey players from Peewee (aged 11–12 years) to Senior (aged 20+ years) participating in amateur level competition sanctioned by Hockey Canada. Reported cases of ice hockey hip injuries were analyzed according to age, mechanism of injury, and injury subtype. Annual injury reporting rates were determined and using a linear regression analysis trended to determine the change in ice hockey hip injury reporting rate over time. Results One hundred and six cases of ice hockey-related hip injuries were reported in total. The majority of injuries (75.5%) occurred in players aged 15–20 years playing at the Junior level. Most injuries were caused by a noncontact mechanism (40.6%) and strains were the most common subtype (50.0%). From 2005 to 2010, the number of reported hip injuries increased by 5.31 cases per year and the rate of reported hip injury per 1,000 registered players increased by 0.02 cases annually. Conclusion Reporting of hip injuries in amateur ice hockey players is increasing. A more accurate injury reporting system is critical for future epidemiologic studies to accurately document the rate and mechanism of hip injury in amateur ice hockey players. PMID:24966705

Ayeni, Olufemi R; Kowalczuk, Marcin; Farag, Jordan; Farrokhyar, Forough; Chu, Raymond; Bedi, Asheesh; Willits, Kevin; Bhandari, Mohit

2014-01-01

166

Field hockey players have different values of ulnar and tibial motor nerve conduction velocity than soccer and tennis players.  

PubMed

The aim of this study was to describe motor nerve conduction velocity in upper and lower extremities in sportsmen. Fifteen high-level field hockey players, seventeen soccer players and ten tennis players were recruited from the Polish National Field Hockey League, Polish Soccer League Clubs, and Polish Tennis Association clubs,respectively. The control group comprised of seventeen healthy, non-active young men. Nerve conduction velocities of ulnar and tibial nerve were assessed with NeuroScreen electromyograph (Toennies, Germany) equipped with standard techniques of supramaximal percutaneus stimulation with constant current and surface electrodes. No significant differences in motor nerve conduction velocities were found between dominant and non-dominant limbs in each studied group. Ulnar nerve conduction velocity measured from above elbow to below elbow was significantly lower only in the field hockey players' dominant limb. Tibial conduction velocity of the field hockey players' non-dominant lower limb was higher in comparison to the tennis players and the control group. There was no significant correlation between body mass and NCV as well as between height of subjects and NCV in both athletes or non-athletes. A slight trend towards a lower TCV values in athletes with longer duration of practicing sport was found. It was most pronounced in the non-dominant lower extremity of field hockey players. PMID:21308651

Pawlak, Matthias; Kaczmarek, Dominik

2010-12-01

167

Examining the relationship between relative age, competition level, and dropout rates in male youth ice-hockey players.  

PubMed

The relative age effect suggests that athletes born in the first two quartiles of a given selection year experience a selection advantage and therefore a greater opportunity for success. We describe two studies examining the relationship between relative age, competition level, and dropout rates of Ontario Minor Hockey Association male ice-hockey players from ages 10 to 15 years (n?=?14?325). In Study 1, dropout was highest among players born in quartiles three and four [?(2) (3)?=?16.32, P?hockey and adds further depth to our understanding of this persistent phenomenon. PMID:24118622

Lemez, S; Baker, J; Horton, S; Wattie, N; Weir, P

2014-12-01

168

The effects of undergarment composition worn beneath hockey protective equipment on high-intensity intermittent exercise.  

PubMed

The purpose of this study was to examine the impact of undergarment composition worn beneath ice hockey protective equipment on thermal homeostasis and power output, during a cycle ergometer exercise protocol designed to simulate the energy expenditure of a hockey game. We hypothesized that the layers of protective equipment would negate the potential thermoregulatory benefits from synthetic "wicking" undergarments but that subjects may feel more comfortable because of the inherent low moisture retention of these fabrics. Eight men (age, 25.4 ± 1.3 year) performed a repeated sprint test before and after a simulated game under typical hockey conditions (12°C; 82% relative humidity). This test was completed twice while wearing full protective equipment and either synthetic (SYN) or cotton (COT) full-length undergarments. During the simulated game, skin temperatures (34.22 ± 0.20°C vs. 34.46 ± 0.16°C) and core temperatures (37.50 ± 0.13°C vs. 37.59 ± 0.14°C) were similar between SYN and COT, respectively. There were also no significant differences found in sweat loss as a percent of body mass, heart rate, plasma lactate, sprint power, or ratings of perceived exertion between SYN and COT, respectively. The SYN retained less water than COT (140 ± 30 vs. 310 ± 30 g; p < 0.05); however, clothing and protective equipment weight gains as a whole were unaffected by the fabric worn (470 ± 110 vs. 590 ± 80 g) for SYN and COT, respectively. There were minimal differences in thermal sensation and undergarment wetness ratings during the simulated game. Thermoregulation and performance was driven more by properties of the layered protective equipment with minimal effects from undergarment composition. PMID:22706578

Noonan, Benjamin; Stachenfeld, Nina

2012-09-01

169

The role of aerobic capacity in high-intensity intermittent efforts in ice-hockey.  

PubMed

The primary objective of this study was to determine a relationship between aerobic capacity ([Formula: see text]O2max) and fatigue from high-intensity skating in elite male hockey players. The subjects were twenty-four male members of the senior national ice hockey team of Poland who played the position of forward or defence. Each subject completed an on-ice Repeated-Skate Sprint test (RSS) consisting of 6 timed 89-m sprints, with 30 s of rest between subsequent efforts, and an incremental test on a cycle ergometer in the laboratory, the aim of which was to establish their maximal oxygen uptake ([Formula: see text]O2max). The analysis of variance showed that each next repetition in the 6x89 m test was significantly longer than the previous one (F5,138=53.33, p<0.001). An analysis of the fatigue index (FI) calculated from the times recorded for subsequent repetitions showed that the value of the FI increased with subsequent repetitions, reaching its maximum between repetitions 5 and 6 (3.10±1.16%). The total FI was 13.77±1.74%. The coefficient of correlation between [Formula: see text]O2max and the total FI for 6 sprints on the distance of 89 m (r =-0.584) was significant (p=0.003). The variance in the index of players' fatigue in the 6x89 m test accounted for 34% of the variance in [Formula: see text]O2max. The 6x89 m test proposed in this study offers a high test-retest correlation coefficient (r=0.78). Even though the test is criticized for being too exhaustive and thereby for producing highly variable results it still seems that it was well selected for repeated sprint ability testing in hockey players. PMID:25177097

Stanula, A; Roczniok, R; Maszczyk, A; Pietraszewski, P; Zaj?c, A

2014-08-01

170

The Assessment of Airway Maneuvers and Interventions in University Canadian Football, Ice Hockey, and Soccer Players  

PubMed Central

Abstract Context: Managing an airway in an unconscious athlete is a lifesaving skill that may be made more difficult by the recent changes in protective equipment. Different airway maneuvers and techniques may be required to help ventilate an unconscious athlete who is wearing full protective equipment. Objective: To assess the effectiveness of different airway maneuvers with football, ice hockey, and soccer players wearing full protective equipment. Design: Crossover study. Setting: University sports medicine clinic. Patients or Other Participants: A total of 146 university varsity athletes, consisting of 62 football, 45 ice hockey, and 39 soccer players. Intervention(s): Athletes were assessed for different airway and physical characteristics. Three investigators then evaluated the effectiveness of different bag-valve-mask (BVM) ventilation techniques in supine athletes who were wearing protective equipment while inline cervical spine immobilization was maintained. Main Outcome Measure(s): The effectiveness of 1-person BVM ventilation (1-BVM), 2-person BVM ventilation (2-BVM), and inline immobilization and ventilation (IIV) was judged by each investigator for each athlete using a 4-point rating scale. Results: All forms of ventilation were least difficult in soccer players and most difficult in football players. When compared with 1-BVM, both 2-BVM and IIV were deemed more effective by all investigators for all athletes. Interference from the helmet and stabilizer were common reasons for difficult ventilation in football and ice hockey players. Conclusions: Sports medicine professionals should practice and be comfortable with different ventilation techniques for athletes wearing full equipment. The use of a new ventilation technique, termed inline immobilization and ventilation, may be beneficial, especially when the number of responders is limited. PMID:21391796

Delaney, J. Scott; Al-Kashmiri, Ammar; Baylis, Penny-Jane; Troutman, Tracy; Aljufaili, Mahmood; Correa, José A.

2011-01-01

171

Explosive Model Tarantula V1/JWL++ Calibration of LX-17: #2  

SciTech Connect

Tarantula V1 is a kinetic package for reactive flow codes that seeks to describe initiation, failure, dead zones and detonation simultaneously. The most important parameter is P1, the pressure between the initiation and failure regions. Both dead zone formation and failure can be largely controlled with this knob. However, V1 does failure with low settings and dead zones with higher settings, so that it cannot fulfill its purpose in the current format. To this end, V2 is under test. The derivation of the initiation threshold P0 is discussed. The derivation of the initiation pressure-tau curve as an output of Tarantula shows that the initiation package is sound. A desensitization package is also considered.

Souers, P C; Vitello, P

2009-05-01

172

A model for predicting the evolution of damage in the plastic bonded explosive LX17  

E-print Network

Viscoelastic cohesive zones are employed within the framework of a finite element code to model a two-phase particle-reinforced composite material consisting of a relatively stiff aggregate embedded in a copolymer binder. The composite of interest...

Seidel, Gary Don

2012-06-07

173

Goal orientations of young male ice hockey players and their parents.  

PubMed

In this study, the researchers investigated the relationship between parent and player dispositional goal orientations associated with playing youth hockey. The authors used the Task and Ego Orientation in Sport Questionnaire (J. L. Duda & J. Whitehead, 1998) to measure task and ego orientation in 123 boys (10-13 years old) and 1 of their parents. Sons rated their own goal orientations for hockey and their perceptions of their parent's goal orientations. Parents rated their goal orientations for their son and their perceptions of their son's goal orientations. Mothers and fathers did not differ in their goal orientations for their son. Travel-team and nontravel-team players did not differ. For ego orientation, the son's self-ratings correlated significantly with the parent's goals for the son, but not for task orientation. Sons reported being significantly more ego-oriented than their parents desired. Sons perceived that their parents had goal orientations similar to their own. The data from this study are congruent with the assertion that parents socialize their children's goal orientations and that ego orientation may be more salient and easily communicated than task orientation. PMID:15636385

Bergin, David A; Habusta, Steven F

2004-12-01

174

King-Devick test normative reference values for professional male ice hockey players.  

PubMed

The King-Devick (K-D) test, a measure of processing speed, visual tracking, and saccadic eye movements, has shown promise as a supplemental screening test following concussion. However, limited normative data for this test have been published.The K-D test was administered to 185 professional ice hockey players as a preseason baseline test in seasons 2012-2013 and 2013-2014. Their average age was 23.8 years (median?=?22.0 years, range?=?16-40 years). The average K-D score was 40.0?s (SD?=?6.1?s, range?=?24.0-65.7?s). K-D test performance showed no association with age, education, or the number of self-reported previous concussions in this sample. The association between trials 1 and 2 of the K-D test was good (ICC?=?0.92, Pearson?=?0.93). Normative values of the K-D test for professional male ice hockey players are reported. K-D test performance did not vary by age, education, or concussion history in this study. PMID:25138698

Vartiainen, M V; Holm, A; Peltonen, K; Luoto, T M; Iverson, G L; Hokkanen, L

2014-08-20

175

Carbon monoxide in indoor ice skating rinks: Evaluation of absorption by adult hockey players  

SciTech Connect

We evaluated alveolar carbon monoxide (CO) levels of 122 male, adult hockey players active in recreational leagues of the Quebec City region (Canada), before and after 10 weekly 90-minute games in 10 different rinks. We also determined exposure by quantifying the average CO level in the rink during the games. Other variables documented included age, pulmonary function, aerobic capacity, and smoking status. Environmental concentrations varied from 1.6 to 131.5 parts per million (ppm). We examined the absorption/exposure relationship using a simple linear regression model. In low CO exposure levels, physical exercise lowered the alveolar CO concentration. However, we noted that for each 10 ppm of CO in the ambient air, the players had adsorbed enough CO to raise their carboxyhemoglobin (COHb) levels by 1 percent. This relationship was true both for smokers and non-smokers. We suggest that an average environmental concentration of 20 ppm of CO for the duration of a hockey game (90 minutes) should be reference limit not to be exceeded in indoor skating rinks.

Levesque, B.; Dewailly, E.; Lavoie, R.; Prud'Homme, D.; Allaire, S. (Centre hospitalier de l'Universite Laval, Quebec City (Canada))

1990-05-01

176

Moral disengagement in the legitimation and realization of aggressive behavior in soccer and ice hockey.  

PubMed

The aim of the present study was to verify that the level of tolerance for aggression is higher in a collective context than in an individual context (polarization effect), and to test the association between moral disengagement, team and self-attitudes toward aggression, and tolerance and realization of aggressive acts in Swiss male soccer and ice hockey. In individual or collective answering conditions, 104 soccer and 98 ice hockey players viewed videotaped aggressive acts and completed a questionnaire, including measures of the perceived legitimacy of videotaped aggression, of the teammates, coach, and self attitudes toward transgressions (modified TNQ), of the moral disengagement in sport (modified MDSS-S), and of self-reported aggressive behavior. A multilevel analysis confirmed a strong polarization effect on the perception of instrumental aggression, the videotaped aggressive acts appearing more tolerated in the collective than in the individual answering condition. Using a structural equation modeling, we found that the moral disengagement, which mediates the effects of perceived coach and ego attitudes toward transgressions, correlates positively with the tolerance of hostile aggression within teams, and with the level of aggressive acts reported by the participants. Aggr. Behav. 9999:XX-XX, 2014. © 2014 Wiley Periodicals, Inc. PMID:25230671

Traclet, Alan; Moret, Orlan; Ohl, Fabien; Clémence, Alain

2014-09-17

177

Skating mechanics of change-of-direction manoeuvres in ice hockey players.  

PubMed

Ice hockey requires rapid transitions between skating trajectories to effectively navigate about the ice surface. Player performance relates in large part to effective change-of-direction manoeuvres, but little is known about how those skills are performed mechanically and the effect of equipment design on them. The purpose of this study was to observe the kinetics involved in those manoeuvres as well as to compare whether kinetic differences may result between two skate models of varying ankle mobility. Eight subjects with competitive ice hockey playing experience performed rapid lateral (90°) left and right change-of-direction manoeuvres. Kinetic data were collected using force strain gauge transducers on the blade holders of the skates. Significantly greater forces were applied by the outside skate (50-70% body weight, %BW) in comparison to the inside skate (12-24%BW, p < 0.05). Skate model and turn direction had no main effect, though significant mixed interactions between leg side (inside/outside) with skate model or turn direction (p < 0.05) were observed, with a trend for left-turn dominance. This study demonstrates the asymmetric dynamic behaviour inherent in skating change-of-direction tasks. PMID:25419626

Fortier, Antoine; Turcotte, René A; Pearsall, David J

2014-11-01

178

High-intensity Interval Training Has Positive Effects on Performance In Ice Hockey Players.  

PubMed

In spite of the well-known benefits that have been shown, few studies have looked at the practical applications of high-intensity interval training (HIIT) on athletic performance. This study investigated the effects of a HIIT program compared to traditional continuous endurance exercise training. 24 hockey players were randomly assigned to either a continuous or high-intensity interval group during a 4-week training program. The interval group (IG) was involved in a periodized HIIT program. The continuous group (CG) performed moderate intensity cycling for 45-60?min at an intensity that was 65% of their calculated heart rate reserve. Body composition, muscle thickness, anaerobic power, and on-ice measures were assessed pre- and post-training. Muscle thickness was significantly greater in IG (p=0.01) when compared to CG. The IG had greater values for both ? peak power (p<0.003) and ? mean power (p<0.02). Additionally, IG demonstrated a faster ? sprint (p<0.02) and a trend (p=0.08) for faster ? endurance test time to completion for IG. These results indicate that hockey players may utilize short-term HIIT to elicit positive effects in muscle thickness, power and on-ice performance. PMID:25329432

Naimo, M A; de Souza, E O; Wilson, J M; Carpenter, A L; Gilchrist, P; Lowery, R P; Averbuch, B; White, T M; Joy, J

2015-01-01

179

The geopolitics of failure: Swedish journalism and the demise of the national ice hockey team in Salt Lake City, 2002  

Microsoft Academic Search

When the Swedish ice hockey team lost to Belarus [Vitryssland] in the 2002 Salt Lake City Olympics after a ‘sudden death’ goal, the Swedish media surpassed one another in throwing insults at the team, and the players were regarded with contempt as traitors. Of key significance in understanding this animosity towards the team's loss against Belarus are the historical and

Peter Dahlén

2012-01-01

180

The Relation Between Perceived Parent-Created Sport Climate and Competitive Male Youth Hockey Players' Good and Poor Sport Behaviors  

Microsoft Academic Search

The authors examined achievement goal orientation (J. L. Duda & J. G. Nicholls, 1992), parental influence (M. L. Babkes & M. R. Weiss, 1999), and the parent-initiated motivational climate (S. A. White, 1996, 1998) in combination to broaden understanding of competitive male youth hockey players' (N = 259) perceptions of the parent-created sport climate and its relation to their self-reported

Nicole M. Lavoi; Megan Babkes Stellino

2008-01-01

181

Secrets of Success In the fall of 1979, Bill Wenmark, a former ice hockey player from Deephaven, Minnesota,  

E-print Network

Secrets of Success In the fall of 1979, Bill Wenmark, a former ice hockey player from Deephaven-praise as your achieve each interim goal en route to the marathon. 6. Don't overtrain. Twenty miles is plenty on the final goal: the marathon finish line. Excerpt Taken from Marathon: The Ultimate Training Guide, by Hal

Huang, Jianyu

182

Climate change: where is the hockey stick? evidence from millennial-scale reconstructed and updated temperature time series  

Microsoft Academic Search

The goal of this paper is to test on a millennial scale the magnitude of the recent warmth period, known as the “hockey-stick”, and the relevance of the causative anthropogenic climate change hypothesis advanced by several academics and worldwide institutions. A select batch of ten long-term climate proxies, included in the NOAA 92 PCN dataset all of which running well

Guido Travaglini

2011-01-01

183

Division I hockey players generate more power than Division III players during on- and off-ice performance tests.  

PubMed

Current research has found anthropometric and physiologic characteristics of hockey players that are correlated to performance. These characteristics, however, have never been examined to see if significant differences exist between on- and off-ice performance markers at different levels of play; Division I, Elite Junior, and Division III. The purpose of this study was to examine the differences that may exist between these characteristics in Division I (24), Elite Junior (10), and Division III hockey (11) players. Forty-five (age 18-24) hockey players completed anthropometric, on-ice, and off-ice tests to ascertain average measures for each division of play. On-ice testing was conducted in full hockey gear and consisted of acceleration, top speed, and on-ice repeated shift test (RST). Off-ice tests included vertical jump, Wingate™, grip strength, and a graded exercise test performed on a skating treadmill to ascertain their VO2peak. Division I players had significantly lower body fat than their Division III peers (p = 0.004). Division I players also scored significantly better on measures of anaerobic power; vertical jump (p = .001), Wingate Peak Power (p = 0.05), grip strength (p = 0.008), top speed (p = .001), and fastest RST course time (p = .001) than their Division III counterparts. There was no significant difference between Division I and Elite Junior players for any on- or off-ice performance variable. The results of this study indicate that performance differences between Division I and Division III hockey players appears to be primarily due to rate of force production. PMID:25436625

Peterson, Ben J; Fitzgerald, John S; Dietz, Calvin C; Ziegler, Kevin S; Ingraham, Stacy J; Baker, Sarah E; Snyder, Eric M

2014-11-26

184

352 Nils B. [ostmann & Sander L. Koole Schonpflug, W. (1983). Coping efficiency and situational demands. In G. R. J. Hockey (Ed.),  

E-print Network

demands. In G. R. J. Hockey (Ed.), Stress andfatigue in human performance (pp, 299-330). Chichester, UK and consequences of goal shielding. Journal of Personality and Social Psychology, 83, 1261-1280. Sriensrneier

Gross, James J.

185

Chiral random grain boundary phase of achiral hockey-stick liquid crystals.  

PubMed

A disordered chiral conglomerate, the random grain boundary (RGB) phase, has been observed below the smectic A liquid crystal phase of an achiral, hockey-stick molecule. In cells, the RGB phase appears dark between crossed polarizers but decrossing the polarizers reveals large left- and right-handed chiral domains with opposite optical rotation. Freeze-fracture transmission electron microscopy reveals that the RGB phase is an assembly of randomly oriented blocks of smectic layers, an arrangement that distinguishes the RGB from the dark, chiral conglomerate phases of bent-core mesogens. X-ray diffraction indicates that there is significant layer shrinkage at the SmA-RGB phase transition, which is marked by the collapse of layers with long-range order into small, randomly oriented smectic blocks. PMID:25310113

Chen, Dong; Wang, Haitao; Li, Min; Glaser, Matthew A; Maclennan, Joseph E; Clark, Noel A

2014-12-01

186

Ice hockey lung - a case of mass nitrogen dioxide poisoning in the Czech Republic.  

PubMed

Nitrogen dioxide (NO?) is a toxic gas, a product of combustion in malfunctioning ice-resurfacing machines. NO? poisoning is rare but potentially lethal. The authors report a case of mass NO? poisoning involving 15 amateur ice hockey players in the Czech Republic. All players were treated in the Department of Respiratory Diseases at Brno University Hospital in November 2010 - three as inpatients because they developed pneumonitis. All patients were followed-up until November 2011. Complete recovery in all but one patient was achieved by December 2010. None of the 15 patients developed asthma-like disease or chronic cough. Corticosteroids appeared to be useful in treatment. Electric-powered ice-resurfacing machines are preferable in indoor ice skating arenas. PMID:24032121

Brat, Kristian; Merta, Zdenek; Plutinsky, Marek; Skrickova, Jana; Stanek, Miroslav

2013-01-01

187

CHRONIC LEG PAIN IN A DIVISION II FIELD HOCKEY PLAYER: A CASE REPORT  

PubMed Central

Exertional compartment syndromes in athletes represent a diagnostic and management challenge for clinicians. The clinical presentation of exertional compartment syndrome is similar to other more common musculoskeletal disorders. A lack of special tests or unique diagnostic identifiers for use in decision making by out?patient clinicians complicates early recognition of this disorder and may delay optimal management. The purpose of this case report is to retrospectively explore the clinical presentation and the decision?making during the course of care of a field hockey athlete eventually determined to have exertional compartment syndrome. Suggestions to assist in recognition and guidance in patient management are included as well as the procedures required for differential diagnosis. Procedures utilized during conservative care are also described in detail. Level of Evidence: 5 (Single Case Report) PMID:24567863

Snowden, Julie; Becker, Jonathan A.; Hazle, Charles

2014-01-01

188

[Analysis of the behavior of the coach in relation to violence in minor league hockey].  

PubMed

The purpose of this study was to verify if, during games, the behavior of ice hockey coaches at the bantam level tends to incite players to use roughness and to infringe upon the rules of the game, as the Néron report (1977) states. The video recording of 27 games using a split-screen technique made it possible to view simultaneously the players in action as well as the coaches' behavior. Analysis of the videotapes revealed that the coaches (n = 11) at the bantam level often exhort their players to put more intensity in their physical contacts (legal body checking), but they more often encouraged them to control themselves and avoid penalties. In general, the coaches displayed very little behavior that encouraged violent actions from the players. PMID:1647855

Trudel, P; Guertin, D; Bernard, D; Boileau, R; Marcotte, G

1991-06-01

189

[A qualitative study of the violence in hockey: perceptions of trainers and players].  

PubMed

During semistructured interviews, coaches and players have expressed their perception of violence in hockey through several game situations. The responses reveal that coaches disapprove and even sanction players receiving too many useless penalties, but occasionally congratulate them for a penalized action executed to save a goal. During matches, verbal intimidation is high and not always criticized, especially when it causes the opponent to lose concentration and take a penalty. Body checks have been identified as a main generator of frustration and lack of discipline among players. Data analysis suggests two interventions in training programmes for coaches: the development of teaching material on body checking and on individual counselling techniques to impart sportsmanship attitudes to young players. PMID:1330272

Trudel, P; Dionne, J P; Bernard, D

1992-12-01

190

With an urban renaissance underway, Hartford begins to think about their hockey heritage  

NSDL National Science Digital Library

The Blowhole! Hartford Whalershttp://www.hartfordwhalers.org/Brass Bonanzahttp://www.brassbonanza.com/hcc/The Sports Economisthttp://www.thesportseconomist.com/Grateful Dead Live at Hartford Civic Center on October 10, 1984http://www.archive.org/details/gd1984-10-14.fob.beyerm88.suraci.77990.sbeok.flac16Mark Twain Househttp://www.marktwainhouse.org/Since 1997, the city of Hartford has been searching for some new whalers. Of course, they aren't looking for a few old salts to go out and hunt those gentle beasts of the deep (that's generally prohibited by international treaties and Hartford is more than a harpoon toss from the Atlantic Ocean), but rather an intrepid band of die-hard hockey fans are searching for the former NHL team known as the Hartford Whalers. This industrial town and noted insurance capital has been without major league hockey since the Hartford Whalers pulled up stakes and moved to the generally ice-free city of Raleigh. Interestingly enough, the Hartford Whalers Booster Club keeps the hockey home fires burning by hosting various events, and they have recently created an online petition to build support for a new NHL arena in Hartford. During the mid-1990s there was a spate of NHL team relocations as the Quebec Nordiques decamped to Colorado and the Winnipeg Jets became the Phoenix Coyotes. Whalers fans remain dedicated to the spirit and legacy of the team, and long-time fan Marty Evtushek said it best when he noted recently that, "They were more rooted in the community. In New York, they were in their high-rises and didn't bother with the average fans. The Whalers were our neighbors." The first link will take users to an article from the New York Times about the hockey lobbying efforts of the Hartford Whalers Boosters Club. Moving on, the second link leads to a site that provides users with a slew of information on the history of the Whalers, complete with rosters, uniform information, and so on. The third link is an audio trove of Whalers-related sounds, including the final outgoing message from the team store answering machine. Most people will also want to listen to "Brass Bonanza" here, the Whalers' Herb Alpert-like theme song. The fourth link will whisk users away to an excellent weblog on sports economics written by a team of economists from schools such as College of the Holy Cross and Clemson University. The fifth link leads to a much celebrated Grateful Dead concert (courtesy of the Internet Archive) that took place at the former home of the Whalers, the Hartford Civic Arena. Finally, the sixth link leads to the homepage of the Mark Twain House. Twain lived in Hartford for seventeen years, and this site provides a host of material on Twain's life and this rather impressive building.

Grinnell, Max

2009-05-08

191

Conservative management of symptomatic Carpal Bossing in an elite hockey player: a case report  

PubMed Central

Objective: To present the characteristics and create awareness of symptomatic carpal bossing and discuss potential etiologies and the role of conservative management through the presentation of an athlete with traumatic onset of symptomatic carpal bossing. Clinical features: This case report outlines the presentation and conservative management of an elite eighteen year old hockey player with symptomatic carpal bossing after a traumatic on ice collision. Carpal bossing is a bony, dorsal prominence in the quadrangular joint of the wrist that is inconsistently symptomatic. Intervention and outcome: A conservative treatment plan consisting of education, reassurance, avoidance of aggravation, and soft tissue therapy allowed return to play in two weeks without restrictions or need for surgical consultation. Conclusion: With inconsistent recurrence rates and surgical complications, the role of conservative management for symptomatic carpal bossing deserves further exploration. The conservative practitioner should be aware of the signs and symptoms of symptomatic carpal bossing to institute suitable treatment. PMID:20037693

Kissel, Peter

2009-01-01

192

Tsunami Hockey  

NASA Astrophysics Data System (ADS)

An important issue that vexes tsunami warning centers (TWCs) is when to cancel a tsunami warning once it is in effect. Emergency managers often face a variety of pressures to allow the public to resume their normal activities, but allowing coastal populations to return too quickly can put them at risk. A TWC must, therefore, exercise caution when cancelling a warning. Kim and Whitmore (2013) show that in many cases a TWC can use the decay of tsunami oscillations in a harbor to forecast when its amplitudes will fall to safe levels. This technique should prove reasonably robust for local tsunamis (those that are potentially dangerous within only 100 km of their source region) and for regional tsunamis (whose danger is limited to within 1000km of the source region) as well. For ocean-crossing destructive tsunamis such as the 11 March 2011 Tohoku tsunami, however, this technique may be inadequate. When a tsunami propagates across the ocean basin, it will encounter topographic obstacles such as seamount chains or coastlines, resulting in coherent reflections that can propagate great distances. When these reflections reach previously-impacted coastlines, they can recharge decaying tsunami oscillations and make them hazardous again. Warning center scientists should forecast sea-level records for 24 hours beyond the initial tsunami arrival in order to observe any potential reflections that may pose a hazard. Animations are a convenient way to visualize reflections and gain a broad geographic overview of their impacts. The Pacific Tsunami Warning Center has developed tools based on tsunami simulations using the RIFT tsunami forecast model. RIFT is a linear, parallelized numerical tsunami propagation model that runs very efficiently on a multi-CPU system (Wang et al, 2012). It can simulate 30-hours of tsunami wave propagation in the Pacific Ocean at 4 arc minute resolution in approximately 6 minutes of real time on a 12-CPU system. Constructing a 30-hour animation using 1 minute simulated time steps takes approximately 50 minutes on the same system. These animations are generated quickly enough to provide decision support for emergency managers whose coastlines may be impacted by the tsunami several hours later. Tsunami reflections can also aid in determining the source region for those tsunamis generated by non-seismic mechanisms without a clear source such as meteotsunamis, tsunamis generated by meteorological phenomena. A derecho that crossed the New Jersey coast and entered the Atlantic Ocean at approximately 1500 UTC June 13, 2013 generated a meteotsunami that struck the northeast coast of the US causing several injuries. A DART sensor off Montauk, NY, recorded tsunami waves approximately 200 minutes apart. We show how the arrival times of the tsunamis recorded by this DART can help to constrain the source region of the meteotsunami. We also examine other reflections produced by the Haida Gwaii 2012, Tohoku 2011, and other tsunamis.

Weinstein, S.; Becker, N. C.; Wang, D.; Fryer, G. J.

2013-12-01

193

A comparative analysis of injuries in handball, hockey, volleyball and soccer in kenya.  

PubMed

The occurrence of injuries in sports and the negligence of the injured players have caused an early exit of talented players in most third world countries. It is therefore necessary to document statistics on injuries in these countries. We prospectively observed and documented injuries to female and male players in handball, hockey, volleyball and soccer in Kenya involving 20 % of all the league matches played in a period of 3 months. Only the injuries that led to substitution of a player or temporary stoppage of the game were recorded in relation to the ecology, nature, mechanism, etiology, and part of the field. There were more injuries in soccer (51.30 %), compared to hockey (23.78 %), handball (14.94 %) and volleyball (10.30 % ). The male players received 72.08 % of all the injuries; soccer players being the most affected (66.34 %). Contusions (62.34 % ) and sprains (14.94 %) were the most noted nature of injuries and occurred more to the lower limbs (74.59 %). The frequently observed etiology was another player (49.35 % ). Most players were injured while tackling or being tackled (31.17 % ), falling (14.94 % ) and this occurred more in the offensive part of the field (53.25 % ). Only 21.43 % of the injuries warranted a substitution of a player. The injuries recorded are typical in these sports, hence more studies of this nature of longer duration and involving a larger sample are recommended in order to corroborate these results. PMID:17650050

Wekesa, M; Njororai, W W; Madaga, E L; Asembo, J M

2001-01-01

194

The relation between perceived parent-created sport climate and competitive male youth hockey players' good and poor sport behaviors.  

PubMed

The authors examined achievement goal orientation (J. L. Duda & J. G. Nicholls, 1992), parental influence (M. L. Babkes & M. R. Weiss, 1999), and the parent-initiated motivational climate (S. A. White, 1996, 1998) in combination to broaden understanding of competitive male youth hockey players' (N = 259) perceptions of the parent-created sport climate and its relation to their self-reported good and poor sport behaviors (GPSB). Exploratory factor analysis revealed a multidimensional measure of GPSB. Multiple regression analyses indicated that athletes' GPSB were significantly predicted by different forms of parental influence. Canonical correlations revealed a complex picture of the contributions of goal orientation and the parent-created sport climate on boys' GPSB in youth hockey. Results expand knowledge of the influence that parents have in youth sport and emphasize the importance of understanding how children's interpretations of parental beliefs and behaviors affect their choices to engage in good and poor sport behaviors. PMID:18959221

LaVoi, Nicole M; Stellino, Megan Babkes

2008-09-01

195

Off-ice fitness of elite female ice hockey players by team success, age, and player position.  

PubMed

This study examined off-ice fitness profiles of 204 elite female ice hockey players from 13 countries who attended a high-performance camp organized by the International Ice Hockey Federation (IIHF) in Bratislava, Slovakia, in July of 2011. Athletes were tested using standardized protocols for vertical jump (centimeters), long jump (centimeters), 4-jump average (centimeters), elasticity ratio (4-vertical jump average/vertical jump), pull-up or inverted row (n), aerobic fitness (V[Combining Dot Above]O2max), body mass (kilograms), and body composition (% fat). These variables were examined relative to team success in major international hockey competition (group 1: Canada and USA, group 2: Sweden and Finland, group 3: All other participating countries), age group (Under 18 and Senior/Open Levels), and player position (forwards, defenders, and goalies). The athletes from countries with the best international records weighed more, yet had less body fat, had greater lower body muscular power and upper body strength, and higher aerobic capacity compared with their less successful counterparts. Compared with the younger athletes, athletes from the senior-level age group weighed more and had higher scores for lower body power, pull-ups, and aerobic capacity. There were no significant differences in anthropometric or fitness data based on player position. This study is the first to report the physical characteristics of a worldwide sample of elite female ice hockey players relative to team performance, age, and player position. Coaches should use these data to identify talent, test for strengths and weaknesses in conditioning programs, and design off-ice programs that will help athletes match the fitness profiles of the most successful teams in the world. PMID:22739329

Ransdell, Lynda B; Murray, Teena M; Gao, Yong

2013-04-01

196

Biomechanical analysis of the penalty-corner drag-flick of elite male and female hockey players  

Microsoft Academic Search

The aim of this study was to analyse the kinematic sequencing in the penalty-corner drag-flicks of elite male and female field hockey players of international calibre. Thirteen participants (one skilled male drag-flicker and six male and six female elite players) participated in the study. An optoelectronic motion analysis system was used to capture the drag-flicks with six cameras, sampling at

Cristina López De Subijana; Daniel Juárez; Javier Mallo; Enrique Navarro

2010-01-01

197

A Cool Sport Full of Physics  

ERIC Educational Resources Information Center

Of all sports, ice hockey is possibly the one with the widest array of physics elements in it. The game provides many examples that can bring physics to life in the classroom. Ice hockey (or just "hockey" as many Canadians would say) sees athletes sliding on ice at high speeds and in various ways, shooting and slapping pucks, and colliding against…

Hache, Alain

2008-01-01

198

Habituation of 10-year-old hockey players to treadmill skating.  

PubMed

This study assessed changes in selected physiological and kinematic variables over 6 weeks of treadmill skating in an effort to understand the process of habituation to this novel training modality. Seven male, Atom-A hockey players who were injury-free and had no previous treadmill skating experience participated in the study. Players performed four 1-min skating bouts at progressively increasing speeds, each week, for 6 weeks. One speed (10.5 km/h) was repeated weekly to allow for assessment of the habituation process. Our criteria for habituation were: a decrease in stride rate, heart rate and rating of perceived exertion, and an increase in stride length, trunk angle and vertical movement of the centre of mass, leading to a plateau, over the course of the 6-week study. Significant decreases were seen in stride rate, heart rate and ratings of perceived exertion, and significant increases were found in stride length. Some of these changes were evident after only one week of training and all were present by week 4. After 6 weeks (24 min) of exposure to treadmill skating, all participants displayed a visibly more efficient skating style. PMID:17892092

Lockwood, Kelly L; Frost, Gail

2007-05-01

199

Three-dimensional kinematics of the lower limbs during forward ice hockey skating.  

PubMed

The objectives of the study were to describe lower limb kinematics in three dimensions during the forward skating stride in hockey players and to contrast skating techniques between low- and high-calibre skaters. Participant motions were recorded with four synchronized digital video cameras while wearing reflective marker triads on the thighs, shanks, and skates. Participants skated on a specialized treadmill with a polyethylene slat bed at a self-selected speed for 1 min. Each participant completed three 1-min skating trials separated by 5 min of rest. Joint and limb segment angles were calculated within the local (anatomical) and global reference planes. Similar gross movement patterns and stride rates were observed; however, high-calibre participants showed a greater range and rate of joint motion in both the sagittal and frontal planes, contributing to greater stride length for high-calibre players. Furthermore, consequent postural differences led to greater lateral excursion during the power stroke in high-calibre skaters. In conclusion, specific kinematic differences in both joint and limb segment angle movement patterns were observed between low- and high-calibre skaters. PMID:18610773

Upjohn, Tegan; Turcotte, René; Pearsall, David J; Loh, Jonathan

2008-05-01

200

Strength and conditioning practices of National Hockey League strength and conditioning coaches.  

PubMed

This study describes the results of a survey of the practices of National Hockey League strength and conditioning (NHL S&C) coaches. The response rate was 76.6% (23 of 30). This survey examines (a) background information, (b) physical testing, (c) flexibility development, (d) speed development, (e) plyometrics, (f) strength/power development, (g) unique aspects, and (h) comments. Results indicate, in part, that coaches assess an average of 7.2 parameters of fitness, with tests of strength and power being the most common. All coaches used a variety of flexibility-development strategies. Results reveal that 21 of 23 (91.3%) of NHL S&C coaches follow a periodization model (PM). Of the coaches who follow a PM, 21 of 21 (100%) indicated that their athletes used Olympic-style lifts, and 21 of 21 coaches (100%) trained athletes with plyometric exercises. For those who used plyometrics with their athletes, 17 of 21 (80.1%) reported no plyometric-related injuries in the past year. Coaches who report they did not follow a PM also did not use Olympic-style lifts, plyometrics, or speed development strategies, such as assisted, resisted, or interval training, with their athletes. Finally, coaches reported that the squat and their variations, as well at the Olympic-style lifts and its variations, were most frequently used with their athletes. The survey serves as a review, as well as a source of applied information and new ideas. PMID:15574099

Ebben, William P; Carroll, Ryan M; Simenz, Christopher J

2004-11-01

201

Trajectories of affective states in adolescent hockey players: turning point and motivational antecedents.  

PubMed

This study examined longitudinal trajectories of positive and negative affective states with a sample of 265 adolescent elite hockey players followed across 3 measurement points during the 1st 11 weeks of a season. Latent class growth modeling, incorporating a time-varying covariate and a series of predictors assessed at the onset of the season, was used to chart out distinct longitudinal trajectories of affective states. Results provided evidence for 3 trajectories of positive affect and 3 trajectories of negative affect. Two of these trajectories were deflected by team selection, a seasonal turning point occurring after the 1st measurement point. Furthermore, the trajectories of positive and negative affective states were predicted by theoretically driven predictors assessed at the start of the season (i.e., self-determination, need satisfaction, athletic identity, and school identity). These results contribute to a better understanding of the motivational, social, and identity-related processes associated with the distinct affective trajectories of athletes participating in elite sport during adolescence. PMID:19271820

Gaudreau, Patrick; Amiot, Catherine E; Vallerand, Robert J

2009-03-01

202

Why do sleeping nematodes adopt a hockey-stick-like posture?  

PubMed

A characteristic posture is considered one of the behavioral hallmarks of sleep, and typically includes functional features such as support for the limbs and shielding of sensory organs. The nematode C. elegans exhibits a sleep-like state during a stage termed lethargus, which precedes ecdysis at the transition between larval stages. A hockey-stick-like posture is commonly observed during lethargus. What might its function be? It was previously noted that during lethargus, C. elegans nematodes abruptly rotate about their longitudinal axis. Plausibly, these "flips" facilitate ecdysis by assisting the disassociation of the old cuticle from the new one. We found that body-posture during lethargus was established using a stereotypical motor program and that body bends during lethargus quiescence were actively maintained. Moreover, flips occurred almost exclusively when the animals exhibited a single body bend, preferentially in the anterior or mid section of the body. We describe a simple biomechanical model that imposes the observed lengths of the longitudinally directed body-wall muscles on an otherwise passive elastic rod. We show that this minimal model is sufficient for generating a rotation about the anterior-posterior body axis. Our analysis suggests that posture during lethargus quiescence may serve a developmental role in facilitating flips and that the control of body wall muscles in anterior and posterior body regions are distinct. PMID:25025212

Tramm, Nora; Oppenheimer, Naomi; Nagy, Stanislav; Efrati, Efi; Biron, David

2014-01-01

203

Why Do Sleeping Nematodes Adopt a Hockey-Stick-Like Posture?  

PubMed Central

A characteristic posture is considered one of the behavioral hallmarks of sleep, and typically includes functional features such as support for the limbs and shielding of sensory organs. The nematode C. elegans exhibits a sleep-like state during a stage termed lethargus, which precedes ecdysis at the transition between larval stages. A hockey-stick-like posture is commonly observed during lethargus. What might its function be? It was previously noted that during lethargus, C. elegans nematodes abruptly rotate about their longitudinal axis. Plausibly, these “flips” facilitate ecdysis by assisting the disassociation of the old cuticle from the new one. We found that body-posture during lethargus was established using a stereotypical motor program and that body bends during lethargus quiescence were actively maintained. Moreover, flips occurred almost exclusively when the animals exhibited a single body bend, preferentially in the anterior or mid section of the body. We describe a simple biomechanical model that imposes the observed lengths of the longitudinally directed body-wall muscles on an otherwise passive elastic rod. We show that this minimal model is sufficient for generating a rotation about the anterior-posterior body axis. Our analysis suggests that posture during lethargus quiescence may serve a developmental role in facilitating flips and that the control of body wall muscles in anterior and posterior body regions are distinct. PMID:25025212

Tramm, Nora; Oppenheimer, Naomi; Nagy, Stanislav

2014-01-01

204

Can injury in major junior hockey players be predicted by a pre-season functional movement screen – a prospective cohort study  

PubMed Central

Background: The Functional Movement Screen (FMS) is a tool that is commonly used to predict the occurrence of injury. Previous studies have shown that a score of 14 or less (with a maximum possible score of 21) successfully predicted future injury occurrence in athletes. No studies have looked at the use of the FMS to predict injuries in hockey players. Objective: To see if injury in major junior hockey players can be predicted by a preseason FMS. Methods: A convenience sample of 20 hockey players was scored on the FMS prior to the start of the hockey season. Injuries and number of man-games lost for each injury were documented over the course of the season. Results: The mean FMS score was 14.7+/?2.58. Those with an FMS score of ?14 were not more likely to sustain an injury as determined by the Fisher’s exact test (one-tailed, P = 0.32). Conclusion: This study did not support the notion that lower FMS scores predict injury in major junior hockey players. PMID:25550667

Dossa, Khaled; Cashman, Glenn; Howitt, Scott; West, Bill; Murray, Nick

2014-01-01

205

A study on effectiveness between set and SHT teaching modules in acquiring speed and accuracy, knowledge acquisition, 3 versus 3 game play (ball control, decision making and skill execution) among students of varying skill levels in hockey  

Microsoft Academic Search

The study examined the effectiveness of two teaching modules of Style E Tactical (SET) and Style H Tactical (SHT) on school boys' in acquiring speed and accuracy in executing general hockey skill, declarative and procedural knowledge as well as ball control, decision making and skill execution in 3 versus 3 hockey game play. The samples (n = 225 for general

Sanmuga Nathan

2010-01-01

206

Relationship between body composition, leg strength, anaerobic power, and on-ice skating performance in division I men's hockey athletes.  

PubMed

The purpose of this study was to examine relationships between laboratory tests and on-ice skating performance in division I men's hockey athletes. Twenty-one men (age 20.7 +/- 1.6 years) were assessed for body composition, isokinetic force production in the quadriceps and hamstring muscles, and anaerobic muscle power via the Wingate 30-second cycle ergometer test. Air displacement plethysmography was used to determine % body fat (%FAT), fat-free mass (FFM), and fat mass. Peak torque and total work during 10 maximal effort repetitions at 120 degrees .s were measured during concentric muscle actions using an isokinetic dynamometer. Muscle power was measured using a Monark cycle ergometer with resistance set at 7.5% of body mass. On-ice skating performance was measured during 6 timed 89-m sprints with subjects wearing full hockey equipment. First length skate (FLS) was 54 m, and total length skate (TLS) was 89 m with fastest and average skating times used in the analysis. Correlation coefficients were used to determine relationships between laboratory testing and on-ice performance. Subjects had a body mass of 88.8 +/- 7.8 kg and %FAT of 11.9 +/- 4.6. First length skate-Average and TLS-Average skating times were moderately correlated to %FAT ([r = 0.53; p = 0.013] and [r = 0.57; p = 0.007]) such that a greater %FAT was related to slower skating speeds. First length skate-Fastest was correlated to Wingate percent fatigue index (r = -0.48; p = 0.027) and FLS-Average was correlated to Wingate peak power per kilogram body mass (r = -0.43; p = 0.05). Laboratory testing of select variables can predict skating performance in ice hockey athletes. This information can be used to develop targeted and effective strength and conditioning programs that will improve on-ice skating speed. PMID:20543730

Potteiger, Jeffrey A; Smith, Dean L; Maier, Mark L; Foster, Timothy S

2010-07-01

207

Analysis of International Competition and Training in Men's Field Hockey by Global Positioning System and Inertial Sensor Technology.  

PubMed

White, AD and MacFarlane, NG. Analysis of international competition and training in men's field hockey by global positioning system and inertial sensor technology. J Strength Cond Res 29(1): 137-143, 2015-This study assessed the relative demands of elite field hockey training and competition to determine whether familiar exercise prescription strategies provide an appropriate training stimulus. Sixteen elite male field hockey players (age, 25 ± 4 years; body mass, 70.9 ± 6.6 kg; and maximal oxygen consumption, 61.0 ± 2.1 ml·kg·min [mean ± SD]) participated in the study. Seventy-five elite level competition and 37 training analyses from 8 games and 4 training sessions were obtained. Training duration was longer than competition and covered a greater total distance (109 ± 2.5 vs. 74 ± 0.3 minutes and 7318 ± 221 vs. 5868 ± 75 m; p < 0.001 in both). The distance covered sprinting and running at high intensity was not different between training and competition (114 ± 6 vs. 116 ± 9 m when sprinting and 457 ± 6 vs. 448 ± 7 m for high-intensity running). More high-intensity accelerations were performed during training than in competition (37 ± 3 vs. 20 ± 2). Despite having lower predicted aerobic capacity and covering less distance in competition than in some previous studies, these data support the suggestion that it is high-intensity activity that differentiates international level competition and further suggests that international players can replicate the intensity of competition during small-sided games. PMID:24978837

White, Andrew D; MacFarlane, Niall G

2015-01-01

208

Head Impact Exposure in Male and Female Collegiate Ice Hockey Players  

PubMed Central

The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p<0.001) and helmet impact location (p<0.001), but not by player position (p=0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p<0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6g, females: 40.8g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s2, and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2g) and females (50.4g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec2, females: 3567, 3784 rad/sec2 respectively). It has been proposed that reducing an individual’s head impact exposure is a practical approach for reducing the risk of brain injuries. Strategies to decrease an individual athlete’s exposure need to be sport and gender specific, with considerations for team and session type. PMID:24210478

Wilcox, Bethany J.; Beckwith, Jonathan G.; Greenwald, Richard M.; Chu, Jeffrey J.; McAllister, Thomas W.; Flashman, Laura A.; Maerlender, Arthur C.; Duhaime, Ann-Christine; Crisco, Joseph J.

2014-01-01

209

Strategic Design of Engineering Education for the Flat World  

E-print Network

. Mass customization of courses refers to adapting the course material to educational goals and learning to the question about the secret behind his success as a hockey player was: "I skate to where the puck is going

210

Gender Differences in Student Responses to Physics  

E-print Network

not account for gap 8 #12;a large truck collides with... a hockey puck sliding with constant speed... a boy negative changes on post-test for men, neutral for women Overall score not affected 19 #12;Goals

Wu, Mingshen

211

Physiological characteristics of National Collegiate Athletic Association Division I ice hockey players and their relation to game performance.  

PubMed

Previous ice hockey research has focused on physiological profiles and determinants of skating speed, but few studies have examined the association of preseason player evaluations with a measure of season-long performance. Understanding which tests are most predictive of player performance could help coaches organize practice and training more effectively. The purpose of this study was to describe physical characteristics and skill levels of 24 members of an NCAA Division I men's ice hockey team and relate them to game performance over the course of a season as measured by plus/minus (+/-) score. Subjects performed a battery of preseason tests including treadmill maximal aerobic capacity, body fat, leg press, push-ups, bench press, chin-ups, and sprinting ability both on and off ice. Pearson and Spearman correlations were used to examine correlations between preseason measures and +/- score. One coach also subjectively grouped the top and bottom 6 players, and analysis of variance was used to examine any differences in preseason measures and +/- score between these 2 groups. Leg press, chin-ups, bench press, and repeat sprint performance were significantly correlated with +/- score (r = 0.554, 0.462, 0.499, and -0.568, respectively). Teams with limited time and resources may choose to perform these tests to evaluate player potential efficiently. Only +/- score differed between top and bottom players suggesting that +/- accurately reflected the coach's perception of player success in this sample. PMID:21478763

Peyer, Karissa L; Pivarnik, James M; Eisenmann, Joey C; Vorkapich, Michael

2011-05-01

212

The effects of heavy upper-body strength training on ice sledge hockey sprint abilities in world class players.  

PubMed

The current study investigated the effects of 6 weeks of heavy upper-body strength training on maximal strength and sprint abilities in eight world class ice sledge hockey players. Before and after the strength training intervention, all subjects performed a 30-m maximal sprint on ice (where time for each 10 m section was measured) and 1 repetition maximal (1RM) strength test in the bench pull (BP), pull-down (PD), pull over (PO) and front pull (FP) exercises. Three weekly sessions with 3×6-8RM for these strength exercises were added during the intervention period. From pre- to post-test, 1RM in the strength exercises improved by 4-8%, whereas 30-m sprint time, all 10-m section times and the calculated power output in the 10-m acceleration phase all improved by 2-3% (all P<.05). The pre- to post-test changes in 30-m sprint time and the initial 10-m time correlated significantly with the changes in 1RM for BP (r=0.59 and 0.55) and PD (r=0.60 and 0.68) (all P<.05). In conclusion, the results of this study strongly suggest that heavy upper-body strength training improves upper-body strength and ice sledge hockey sprint abilities, and that the magnitude of improvements in strength correlates with the improvements in sprint abilities. PMID:25457423

Sandbakk, Øyvind; Hansen, Mads; Ettema, Gertjan; Rønnestad, Bent

2014-12-01

213

Optimized cooling systems for semiconductor devices  

Microsoft Academic Search

The straightforward air cooling of semiconductor devices has gradually been replaced by methods using liquid coolants, especially water cooling. In the work described, more efficient cooling devices than those already existing for hockey-puck and module type semiconductors are suggested. An existing heat sink made of aluminium nitride for the water-cooling of hockey-puck type semiconductors has been used as a basis

H. Baumann; P. Heinemeyer; W. Staiger; M. Topfer; K. Unger; D. Muller

1998-01-01

214

The influence of gender-related beliefs and conceptions of ability on women learning the hockey wrist shot.  

PubMed

The purpose of this study was to determine the influence of beliefs about gender appropriateness and conceptions of ability on perceived and actual competene and patterns of behavior during practice of the hockey wrist shot. Sixty-eight undergraduate women formed four treatment conditions based on their beliefs about gender appropriateness and conceptions of ability. Four teachers taught across the treatment conditions for a total of 16 learning groups. Data were collected through a three-part questionnaire and from audio-video taping of the entire episode to ascertain the paticipants' competency beliefs, effort, and performance. Gender appropriateness impacted the participants' perceptions of competence and actual performance in the study, while beliefs about conceptions of ability did not produce a significant difference. This study reaffirms that educators must work diligently to combat the stereotypical beliefs many hold with respect to the gender appropriateness of physical activities. PMID:12848231

Belcher, Don; Lee, Amelia M; Solmon, Melinda A; Harrison, Louis

2003-06-01

215

Skin conditions in figure skaters, ice-hockey players and speed skaters: part I - mechanical dermatoses.  

PubMed

Figure skaters, ice-hockey players and speed skaters experience a range of dermatologic conditions and tissue-related injuries on account of mechanical trauma, infectious pathogens, inflammatory processes and environmental factors related to these competitive pursuits. Sports medicine practitioners, family physicians, dermatologists and coaches should be familiar with these skin conditions to ensure timely and accurate diagnosis and management of affected athletes. This review is Part I of a subsequent companion review and provides a comprehensive review of mechanical dermatoses experienced by ice-skating athletes, including skater's nodules and its variants, pump bumps, piezogenic pedal papules, talon noir, skate/lace bite, friction bullae, corns and calluses, onychocryptosis, skater's toe and skate blade-induced lacerations. These injuries result from friction, shear forces, chronic pressure and collisions with surfaces that occur when athletes endure repetitive jump landings, accelerated starts and stops and other manoeuvres during rigorous training and competition. Ill-fitting skates, improper lacing techniques and insufficient lubrication or protective padding of the foot and ankle often contribute to the development of skin conditions that result from these physical and mechanical stresses. As we will explain, simple measures can frequently prevent the development of these conditions. The treatment of skater's nodules involves reduction in chronic stimulation of the malleoli, and the use of keratolytics and intralesional steroid injections; if malleolar bursitis develops, bursa aspirations may be required. Pump bumps, which result from repetitive friction posteriorly, can be prevented by wearing skates that fit correctly at the heel. Piezogenic pedal papules may be treated conservatively by using heel cups, compressive stockings and by reducing prolonged standing. Talon noir usually resolves without intervention within several weeks. The treatment of skate bite is centred on reducing compression by the skate tongue of the extensor tendons of the anterior ankle, which can be accomplished by use of proper lacing techniques, increasing pliability of the skate tongue and using protective padding, such as Bunga Pads™. Anti-inflammatory medications and cold compresses can also help reduce inflammation. Friction bullae are best managed by careful lancing of painful blisters and application of petrolatum or protective dressings to accelerate healing; preventative measures include the use of well fitting skates, proper lacing techniques and moisture-wicking socks. Corns and calluses are similarly best prevented by the use of well fitted skates and orthotic devices. Symptomatic, debridement reduces the irritant effect of the thick epidermis, and can be accomplished by soaking the area in warm water followed by paring. Application of creams with high concentrations of urea or salicylic acid can also soften callosities. Cases of onychocryptosis benefit from warm soaks, antibiotic ointments and topical steroids to reduce inflammation, but sometimes chemical or surgical matricectomies are required. Preventative measures of both onychocryptosis and skater's toe include cutting toenails straight across to allow for a more equal distribution of forces within the toe box. Finally, the prevention and treatment of lacerations, which constitute a potentially fatal type of mechanical injury, require special protective gear and acute surgical intervention with appropriate suturing. The subsequent companion review of skin conditions in ice skaters will discuss infectious, inflammatory and cold-induced dermatoses, with continued emphasis on clinical presentation, diagnosis, treatment and prevention. PMID:21846161

Tlougan, Brook E; Mancini, Anthony J; Mandell, Jenny A; Cohen, David E; Sanchez, Miguel R

2011-09-01

216

Knowing what to do and doing it: Differences in self-assessed tactical skills of regional, sub-elite, and elite youth field hockey players  

Microsoft Academic Search

To determine whether youth athletes with an “average” (regional), “high” (sub-elite), and “very high” (elite) level of performance differ with respect to their self-assessed tactical skills, 191 youth field hockey players (mean age 15.5 years, s = 1.6) completed the Tactical Skills Inventory for Sports (TACSIS) with scales for declarative (“knowing what to do”) and procedural (“doing it”) knowledge. Multivariate analyses of

Marije T. Elferink-Gemser; Rianne Kannekens; Jim Lyons; Yvonne Tromp; Chris Visscher

2010-01-01

217

The role of visual perception measures used in sports vision programmes in predicting actual game performance in Division I collegiate hockey players.  

PubMed

Abstract In the growing field of sports vision little is still known about unique attributes of visual processing in ice hockey and what role visual processing plays in the overall athlete's performance. In the present study we evaluated whether visual, perceptual and cognitive/motor variables collected using the Nike SPARQ Sensory Training Station have significant relevance to the real game statistics of 38 Division I collegiate male and female hockey players. The results demonstrated that 69% of variance in the goals made by forwards in 2011-2013 could be predicted by their faster reaction time to a visual stimulus, better visual memory, better visual discrimination and a faster ability to shift focus between near and far objects. Approximately 33% of variance in game points was significantly related to better discrimination among competing visual stimuli. In addition, reaction time to a visual stimulus as well as stereoptic quickness significantly accounted for 24% of variance in the mean duration of the player's penalty time. This is one of the first studies to show that some of the visual skills that state-of-the-art generalised sports vision programmes are purported to target may indeed be important for hockey players' actual performance on the ice. PMID:25142869

Poltavski, Dmitri; Biberdorf, David

2015-03-01

218

Brief Communications Near-Optimal Human Adaptive Control across Different  

E-print Network

and Grafton, 2000). A person learning to hit a hockey puck toward a teammate, for example, learns about; Baddeley et al., 2003). For example, a hockey player may learn that large muscle commands lead by studying the goals of the device. An important property of research that uses ideal actors

Jacobs, Robert A.

219

Imagine Life without Friction  

NSDL National Science Digital Library

Students are introduced to the concept of inertia and its application to a world without the force of friction acting on moving objects. When an object is in motion, friction tends to be the force that acts on this object to slow it down and eventually come to a stop. By severely limiting friction through the use of hover pucks, students learn that the energy of one moving puck is transferred directly to another puck at rest when they collide. Students learn the concept of the conservation of energy via a "collision," and come to realize that with friction, energy is converted primarily to heat to slow and stop an object in motion. In the associated activity, "The Puck Stops Here," students investigate the frictional force of an object when different materials are placed between the object and the ground. They apply this understanding to the challenge to design a new hockey puck for the National Hockey League.

Engineering K-PhD Program,

220

Descriptive Epidemiology of Collegiate Women's Field Hockey Injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 Through 2002–2003  

PubMed Central

Objective: To review 15 years of National Collegiate Athletic Association (NCAA) injury surveillance data for women's field hockey and identify potential areas for injury prevention initiatives. Background: Field hockey is one of the most popular sports worldwide and is growing in participation in the United States, particularly among women. From 1988–1989 to 2002–2003, participation in NCAA women's field hockey increased 12%, with the largest growth among Division III programs. In 2002– 2003, 253 colleges offered women's field hockey and 5385 women participated. Main Results: Game injury rates showed a significant average annual 2.5% decline over 15 years, most likely fueled by drops in ankle ligament sprain, knee internal derangement, and finger fracture injuries. Despite this, ankle ligament sprains were common (13.7% of game and 15.0% of practice injuries) and a frequent cause of severe injuries (resulting in 10+ days of time-loss activity). Concussion and head laceration injuries increased over this same time, and the risk of sustaining a concussion in a game was 6 times higher than the risk of sustaining one during practice. Overall, injury rates were twice as high in games as in practices (7.87 versus 3.70 injuries per 1000 athlete-exposures, rate ratio = 2.1, 95% confidence interval = 2.0, 2.3). Most head/neck/face (71%) and hand/finger/thumb (68%) injuries occurred when the player was near the goal or within the 25-yd line and were caused by contact with the stick or ball (greater than 77% for both body sites); for 34% of head/neck/ face injuries, a penalty was called on the play. Recommendations: Equipment (requiring helmets and padded gloves) and rule changes (to decrease field congestion near the goal) as well as evidence-based injury prevention interventions (eg, prophylactic ankle taping/bracing, neuromuscular balance exercise programs) may be viable prevention initiatives for reducing injury rates in women's collegiate field hockey players. PMID:17710169

Dick, Randall; Hootman, Jennifer M; Agel, Julie; Vela, Luzita; Marshall, Stephen W; Messina, Renee

2007-01-01

221

Generic Hockey-Stick Model for Estimating Benchmark Dose and Potency: Performance Relative to BMDS and Application to Anthraquinone  

PubMed Central

Benchmark Dose Model software (BMDS), developed by the U.S. Environmental Protection Agency, involves a growing suite of models and decision rules now widely applied to assess noncancer and cancer risk, yet its statistical performance has never been examined systematically. As typically applied, BMDS also ignores the possibility of reduced risk at low doses (“hormesis”). A simpler, proposed Generic Hockey-Stick (GHS) model also estimates benchmark dose and potency, and additionally characterizes and tests objectively for hormetic trend. Using 100 simulated dichotomous-data sets (5 dose groups, 50 animals/group), sampled from each of seven risk functions, GHS estimators performed about as well or better than BMDS estimators, and a surprising observation was that BMDS mis-specified all of six non-hormetic sampled risk functions most or all of the time. When applied to data on rodent tumors induced by the genotoxic chemical carcinogen anthraquinone (AQ), the GHS model yielded significantly negative estimates of net potency exhibited by the combined rodent data, suggesting that—consistent with the anti-leukemogenic properties of AQ and structurally similar quinones—environmental AQ exposures do not likely increase net cancer risk. In addition to its simplicity and flexibility, the GHS approach offers a unified, consistent approach to quantifying environmental chemical risk. PMID:21731536

Bogen, Kenneth T.

2010-01-01

222

NON-SURGICAL TREATMENT OF A PROFESSIONAL HOCKEY PLAYER WITH THE SIGNS AND SYMPTOMS OF SPORTS HERNIA: A CASE REPORT  

PubMed Central

Study Design: Case Report Background: Injury or weakness of lower abdominal attachments and the posterior inguinal wall can be symptoms of a “sports hernia” and an underlying source of groin pain. Although several authors note conservative treatment as the initial step in the management of this condition, very little has been written on the specific description of non-surgical measures. Most published articles favoring operative care describe poor results related to conservative management; however they fail to report what treatment techniques comprise non-operative management. Case Presentation: The subject of this case report is a professional ice hockey player who sustained an abdominal injury in a game, which was diagnosed as a sports hernia. Following the injury, structured conservative treatment emphasized core control and stability with progressive peripheral demand challenges. Intrinsic core control emphasis continued throughout the treatment progression and during the functional training prior to return to sport. Outcome: The player completed his recovery with return to full competition seven weeks post injury, and continues to compete in the NHL seven years later. Discussion: Surgical intervention has been shown to be effective in the treatment of the “sports hernia.” However it is the authors' opinion that conservative care emphasizing evaluation of intrinsic core muscular deficits and rehabilitation directed at addressing these deficits is an appropriate option, and should be considered prior to surgical intervention. PMID:22319682

Woodward, J. Scott; Parker, Andrew; MacDonald, Robert M.

2012-01-01

223

Perfectionism and achievement goals in young Finnish ice-hockey players aspiring to make the Under-16 national team.  

PubMed

Research on perfectionism suggests that is it useful to differentiate between perfectionistic strivings and perfectionistic concerns. Regarding the 2x2 achievement goal framework, the usefulness of this differentiation was recently demonstrated in a study with university student athletes (Stoeber, Stoll, Pescheck, & Otto, 2008, Study 2), in which it was found that perfectionistic strivings were associated with mastery-approach and performance-approach goals and perfectionistic concerns with mastery-avoidance, performance-approach, and performance-avoidance goals. Because the study was largely exploratory and only used non-elite athletes, the aim of the present research was to replicate and extend these findings by investigating a sample of 138 young, elite ice-hockey players, while adding further measures of perfectionism and using structural equation modelling (SEM) to confirm the relationships between perfectionistic strivings, perfectionistic concerns, and the 2x2 achievement goals. The SEM results showed that, in elite athletes also, perfectionistic strivings are associated with mastery-approach and performance-approach goals, whereas perfectionistic concerns are associated with mastery-avoidance, performance-approach, and performance-avoidance goals. Our findings corroborate the importance of differentiating between perfectionistic strivings and perfectionistic concerns when studying perfectionism in sports, because only perfectionistic concerns (and not perfectionistic strivings) are associated with maladaptive patterns of achievement goals. PMID:19012074

Stoeber, Joachim; Stoll, Oliver; Salmi, Olli; Tiikkaja, Jukka

2009-01-01

224

A simple video-based timing system for on-ice team testing in ice hockey: a technical report.  

PubMed

The purpose of this study was to describe and evaluate a newly developed on-ice timing system for team evaluation in the sport of ice hockey. We hypothesized that this new, simple, inexpensive, timing system would prove to be highly accurate and reliable. Six adult subjects (age 30.4 ± 6.2 years) performed on ice tests of acceleration and conditioning. The performance times of the subjects were recorded using a handheld stopwatch, photocell, and high-speed (240 frames per second) video. These results were then compared to allow for accuracy calculations of the stopwatch and video as compared with filtered photocell timing that was used as the "gold standard." Accuracy was evaluated using maximal differences, typical error/coefficient of variation (CV), and intraclass correlation coefficients (ICCs) between the timing methods. The reliability of the video method was evaluated using the same variables in a test-retest analysis both within and between evaluators. The video timing method proved to be both highly accurate (ICC: 0.96-0.99 and CV: 0.1-0.6% as compared with the photocell method) and reliable (ICC and CV within and between evaluators: 0.99 and 0.08%, respectively). This video-based timing method provides a very rapid means of collecting a high volume of very accurate and reliable on-ice measures of skating speed and conditioning, and can easily be adapted to other testing surfaces and parameters. PMID:24936905

Larson, David P; Noonan, Benjamin C

2014-09-01

225

The Social Support Experiences of Major Junior Ice Hockey Players in a Physically Removed Region of Canada  

PubMed Central

The present report from a larger project overviews the sources and types of social support resourced by 10 major junior athletes while they performed out of one physically removed Canadian region. Retrospective interviews and content analysis were conducted during three stages (3, 3, and 4 respondents). The data were segmented into meaning units, coded into a hierarchy of themes, and verified by each respondent and an expert panel (former athlete, coach, parent of former athlete). The respondents sought out three types of social support from four different sources (providers) that were adapted to their remote location, including teachers and general community support. Implications are considered in terms of applied research and practice with aspiring adolescent athletes located in removed locations. Key pointsThe study extends knowledge about the sources and types of social support resourced by elite major junior ice hockey players located in one physically removed Canadian region.From the respondents’ views, three types of social support were sought from four different sources.Implications are considered in terms of sport psychology research and applied practice. PMID:24149469

Dubé, Timothy V.; Schinke, Robert J.; Hancock, David J.; Dubuc, Nicole G.

2007-01-01

226

The Experience Exchange n Ew vEnTu r E com p ETiTion wom En's f i Eld hockEy p l ay-of f r u n m ba i s l au dEd  

E-print Network

Mentorship The Experience Exchange n Ew vEnTu r E com p ETiTion wom En's f i Eld hockEy p l ay to the National Technical Information Service advisory board. 26 sPotlight on: athletics Women's field hockey storms, and help you realize your goals and full potential. I've been fortunate to have a number

Blais, Brian

227

Sweat rate, salt loss, and fluid intake during an intense on-ice practice in elite Canadian male junior hockey players.  

PubMed

Previous research in many sports suggests that losing ~1%-2% body mass through sweating impairs athletic performance. Elite-level hockey involves high-intensity bursts of skating, arena temperatures are >10 degrees C, and players wear protective equipment, all of which promote sweating. This study examined the pre-practice hydration, on-ice fluid intake, and sweat and sodium losses of 44 candidates for Canada's junior men's hockey team (mean +/- SE age, 18.4 +/- 0.1 y; height, 184.8 +/- 0.9 cm; mass, 89.9 +/- 1.1 kg). Players were studied in groups of 10-12 during 4 intense 1 h practices (13.9 degrees C, 66% relative humidity) on 1 day. Hydration status was estimated by measuring urine specific gravity (USG). Sweat rate was calculated from body mass changes and fluid intake. Sweat sodium concentration ([Na]) was analyzed in forehead sweat patch samples and used with sweat rate to estimate sodium loss. Over 50% of players began practice mildly hypohydrated (USG > 1.020). Sweat rate during practice was 1.8 +/- 0.1 L.h(-1) and players replaced 58% (1.0 +/- 0.1 L.h(-1)) of the sweat lost. Body mass loss averaged 0.8% +/- 0.1%, but 1/3 of players lost more than 1%. Sweat [Na] was 54.2 +/- 2.4 mmol.L(-1) and sodium loss averaged 2.26 +/- 0.17 g during practice. Players drank only water during practice and replaced no sodium. In summary, elite junior hockey players incurred large sweat and sodium losses during an intense practice, but 2/3 of players drank enough to minimize body mass loss. However, 1/3 of players lost more than 1% body mass despite ready access to fluid and numerous drinking opportunities from the coaches. PMID:18347681

Palmer, Matthew S; Spriet, Lawrence L

2008-04-01

228

Vitamin D status and V[combining dot above]O2peak during a skate treadmill graded exercise test in competitive ice hockey players.  

PubMed

Vitamin D status has been associated with cardiorespiratory fitness (CRF) in cross-sectional investigations in the general population. Data characterizing the association between 25-hydroxyvitamin D (25(OH)D) concentration and CRF in athletes are lacking. Junior and collegiate ice hockey players were recruited from the Minneapolis, MN (44.9° N), area during the off-season period (May 16-June 28). The purpose of this study was to examine the cross-sectional association between 25(OH)D concentration and CRF in a sample population of competitive ice hockey players. Circulating 25(OH)D level was assessed from a capillary blood sample analyzed using liquid chromatography-tandem mass spectrometry. V[Combining Dot Above]O2peak during a skate treadmill graded exercise test (GXT) was used to assess CRF. Data on both 25(OH)D concentration and V[Combining Dot Above]O2peak were available for 52 athletes. Insufficient 25(OH)D concentrations were found in 37.7% of the athletes (<32 ng·ml). Vitamin D status was not significantly associated with any physiological or physical parameter during the skate treadmill GXT. PMID:24832977

Fitzgerald, John S; Peterson, Ben J; Warpeha, Joseph M; Wilson, Patrick B; Rhodes, Greg S; Ingraham, Stacy J

2014-11-01

229

Reliability, usefulness, and validity of the 30-15 Intermittent Ice Test in young elite ice hockey players.  

PubMed

The purpose of this study was to examine the reliability, usefulness, and validity of the 30-15 Intermittent Ice Test (30-15(IIT)) in 17 young elite ice hockey players. For the reliability and usefulness study, players performed the 30-15(IIT) 7 days apart. For the validity study, data derived from the first 30-15(IIT) were compared with those obtained from the 30-15 Intermittent Fitness Test (30-15(IFT), the running version of this test used as a reference marker for its ability to assess cardiovascular fitness in the field, that is, VO?peak). Maximal speed, heart rate at exhaustion (HR(peak)) and postexercise blood-lactate levels ([La](b)) were collected for all tests, whereas submaximal HR was taken at stages 4 and 8 (HR(stage4) and HR(stage8)) during the 30-15(IIT). All intra-class correlation coefficients were >0.94. Coefficients of variation were 1.6% (90% CI, 1.3-2.3), 1.7% (1.3-2.8), 1.4% (1.0-2.2), and 0.7% (0.5-1.1) for maximal skating speed, HR(stage4), HR(stage8), and HR(peak), respectively. Correlations between maximal velocities and HR(peak) obtained for the 30-15(IIT) vs. 30-15(IFT) were very large (r = 0.72) and large (r = 0.61), respectively. Maximal skating speed was also largely correlated to estimated VO?peak (r = 0.71). There was however no correlation for [La](b) values between both tests (r = 0.42). These results highlight the specificity of the on-ice 30-15(IIT) and show it to be a reliable and valid test for assessing cardiorespiratory fitness in young elite players. Coaches could interpret a change in performance of at least 2 stages, or a change in submaximal HR of more than 8% (?8 b·min?¹) during the eighth stage to be a meaningful change in skating fitness. PMID:21522077

Buchheit, Martin; Lefebvre, Benjamin; Laursen, Paul B; Ahmaidi, Said

2011-05-01

230

Descriptive Epidemiology of Collegiate Men's Ice Hockey Injuries: National Collegiate Athletic Association Injury Surveillance System, 1988–1989 Through 2003–2004  

PubMed Central

Objective: To review 16 years of National Collegiate Athletic Association (NCAA) injury surveillance data for men's ice hockey and to identify potential areas for injury prevention initiatives. Background: The NCAA began injury surveillance of men's ice hockey during the 1988–1989 academic year. These data represent all 3 NCAA divisions; the last Division II championship, however, was held during the 1998–1999 academic year. Main Results: The rate of injury was more than 8 times higher in games than in practices (16.27 versus 1.96 injuries per 1000 athlete-exposures [A-Es], rate ratio = 8.3, 95% confidence interval [CI] = 7.9, 8.8). A significant average annual increase of 1.3% in game injury rates occurred over the sample period ( P = .05), but practice rates stayed static ( P = .77). Preseason practice injury rates were more than twice as high as regular-season practice rates (5.05 versus 1.94 injuries per 1000 A-Es, rate ratio = 2.6, 95% CI = 2.4, 2.9, P < .01). The majority of game and practice injuries occurred to the lower extremity. Knee internal derangement (13.5%) was the most common lower extremity injury reported for games, whereas pelvis and hip muscle strains (13.1%) were the most common injury reported during practices. Player-to-player contact was the most frequent game mechanism of injury (50.0%). The majority of injuries occurred between the blue line and face-off circles (28.0%), in the corner (23.5%), and in the neutral zone (21.4%). Recommendations: Preventive efforts should focus on strategies that limit player-to-player contact in the neutral zone and at the top of the offensive and defensive zones. In addition, clinicians and researchers should identify risk factors and interventions for muscle strains at the pelvis and hip region. PMID:17710172

Agel, Julie; Dompier, Thomas P; Dick, Randall; Marshall, Stephen W

2007-01-01

231

Innovation Now Episode #:IN0038  

E-print Network

dollar total prize-purse for the winners. The goal of the "Sample Return Robot Challenge" is to develop it before the clock runs out! The robots will be retrieving items such as a hockey puck, a metal hook it takes to gather samples to analyze and achieve mission goals. For Innovation Now, this is Buddy Rubino

Waliser, Duane E.

232

Skin conditions in figure skaters, ice-hockey players and speed skaters: part II - cold-induced, infectious and inflammatory dermatoses.  

PubMed

Participation in ice-skating sports, particularly figure skating, ice hockey and speed skating, has increased in recent years. Competitive athletes in these sports experience a range of dermatological injuries related to mechanical factors: exposure to cold temperatures, infectious agents and inflammation. Part I of this two part review discussed the mechanical dermatoses affecting ice-skating athletes that result from friction, pressure, and chronic irritation related to athletic equipment and contact with surfaces. Here, in Part II, we review the cold-induced, infectious and inflammatory skin conditions observed in ice-skating athletes. Cold-induced dermatoses experienced by ice-skating athletes result from specific physiological effects of cold exposure on the skin. These conditions include physiological livedo reticularis, chilblains (pernio), Raynaud phenomenon, cold panniculitis, frostnip and frostbite. Frostbite, that is the literal freezing of tissue, occurs with specific symptoms that progress in a stepwise fashion, starting with frostnip. Treatment involves gradual forms of rewarming and the use of friction massages and pain medications as needed. Calcium channel blockers, including nifedipine, are the mainstay of pharmacological therapy for the major nonfreezing cold-induced dermatoses including chilblains and Raynaud phenomenon. Raynaud phenomenon, a vasculopathy involving recurrent vasospasm of the fingers and toes in response to cold, is especially common in figure skaters. Protective clothing and insulation, avoidance of smoking and vasoconstrictive medications, maintaining a dry environment around the skin, cold avoidance when possible as well as certain physical manoeuvres that promote vasodilation are useful preventative measures. Infectious conditions most often seen in ice-skating athletes include tinea pedis, onychomycosis, pitted keratolysis, warts and folliculitis. Awareness, prompt treatment and the use of preventative measures are particularly important in managing such dermatoses that are easily spread from person to person in training facilities. The use of well ventilated footgear and synthetic substances to keep feet dry, as well as wearing sandals in shared facilities and maintaining good personal hygiene are very helpful in preventing transmission. Inflammatory conditions that may be seen in ice-skating athletes include allergic contact dermatitis, palmoplantar eccrine hidradenitis, exercise-induced purpuric eruptions and urticaria. Several materials commonly used in ice hockey and figure skating cause contact dermatitis. Identification of the allergen is essential and patch testing may be required. Exercise-induced purpuric eruptions often occur after exercise, are rarely indicative of a chronic venous disorder or other haematological abnormality and the lesions typically resolve spontaneously. The subtypes of urticaria most commonly seen in athletes are acute forms induced by physical stimuli, such as exercise, temperature, sunlight, water or particular levels of external pressure. Cholinergic urticaria is the most common type of physical urticaria seen in athletes aged 30 years and under. Occasionally, skaters may develop eating disorders and other related behaviours some of which have skin manifestations that are discussed herein. We hope that this comprehensive review will aid sports medicine practitioners, dermatologists and other physicians in the diagnosis and treatment of these dermatoses. PMID:21985216

Tlougan, Brook E; Mancini, Anthony J; Mandell, Jenny A; Cohen, David E; Sanchez, Miguel R

2011-11-01

233

Safety Tips: Hockey (For Parents)  

MedlinePLUS

... flexors. Back Continue Keeping it Safe During a Game There's a reason why tripping, hooking, slashing, high- ... by theirs. Other penalties designed to keep the game safe involve roughing, boarding, and checking from behind. ...

234

Case Study: Ice Hockey Injury  

NSDL National Science Digital Library

This is a case study for high school and/or undergraduate students in anatomy and physiology. In particular this case study explores the anatomy and physiology of the cardiovascular and respiratory systems. Users of the National Center for Case Study Teaching in Science will be required to register (free) to gain access to the answer key (and must be of teaching status to receive the key). Included in the resource are the case overview, objectives, case study, teaching notes and answer key.

Philip J Stephens (Villanova University Biology)

2004-04-19

235

The 'Patient experience' revolution.  

PubMed

We're arguably at the most pivotal time in our young profession. The ACA has provided EMS an unprecedented opportunity to become a part of the healthcare system, a move that many of us have dreamed about for decades. We need to pay attention to the changing dynamics of the environment in which we operate. The factors that currently impact hospitals, doctors and other healthcare providers will also impact us sooner than we think. Take the time to help shape our future and how we participate in this new healthcare system. It's time to focus on the patient and the patient's experience with our service. Wayne Gretzky said two important things during an interview when he was asked what makes him such a great hockey player. One was, "You miss 100% of the shots you don't take." The other was, "A good hockey player plays where the puck is. A great hockey player plays where the puck is going to be. I skate to where the puck is going to be, not where it has been." Our advice to you is to go ahead, take the shot, get ahead of the other team and focus on improved customer satisfaction sooner rather than later. PMID:24660359

Hooten, Doug; Zavadsky, Matt

2014-02-01

236

Ojibway Hockey CD ROM in the Making.  

ERIC Educational Resources Information Center

A shortage of instructional materials and activities is a continual problem for Native language courses, as is making the material relevant to students. The Native way of teaching and learning has always been to have fun. In response to these concerns, a group of language experts at Trent University (Ontario) are developing a CD-ROM for high…

Williams, Shirley I.

237

Communicating Uncertainty: The phantom hockey stick  

E-print Network

an estimated con- fidence of 66 - 90 percent, or better than two-to-one odds. #12;Quantifying uncertainty a fixed method. What if tree rings respond differently in 1200AD? · Maxima are always tricky ... Little

Nychka, Douglas

238

Metazoan meiofauna within the oxygen-minimum zone off Chile: Results of the 2001-PUCK expedition  

NASA Astrophysics Data System (ADS)

A quantitative study of metazoan meiofauna was carried out at continental shelf and slope stations affected by the oxygen-minimum zone in the eastern South Pacific off Chile. Densities of meiobenthos at the investigated stations off Antofagasta (22°S), Concepción (36°S), and Chiloé (42°S) ranged from 1282.1 to 8847.8 ind 10 cm -2. Oxygen deficiency led only to average abundances, despite higher food availability and freshness at the corresponding sites. Sediment organic carbon, chlorophyll- a, and phaeopigment contents were used as measures of the input from water-column primary production, which accumulated at the oxygen-minimum zone stations. The highest abundances were found at a station with an oxygen content of 0.79 mL L -1, which was slightly elevated from what is defined as oxygen minimum (0.5 mL L -1). The most oxygenated site yielded the lowest densities. Meiofauna assemblages became more diverse with increasing bottom-water oxygenation, whereas nematodes were the most abundant taxon at every station, followed by annelids, copepods, and nauplii.

Veit-Köhler, Gritta; Gerdes, Dieter; Quiroga, Eduardo; Hebbeln, Dierk; Sellanes, Javier

2009-07-01

239

Puck in the Schoolyard: Crassing the Bard at Hawthorn Secondary College.  

ERIC Educational Resources Information Center

Claims doing "A Midsummer Night's Dream" as a school production allows students to bring their own personalities and cultures into the play. Explains how the production can be both inclusive, making room for many extra actions, as well communal, vivifying a school community to make it live more intensely. (NH)

Hayes, Terry

1999-01-01

240

The e-puck, a Robot Designed for Education in Engineering  

Microsoft Academic Search

Mobile robots have the potential to become the ideal tool to teach a broad range of engineering disciplines. Indeed, mobile robots are getting increasingly complex and accessible. They embed elements from diverse fields such as mechanics, digital electronics, automatic control, signal pro- cessing, embedded programming, and energy management. Moreover, they are attractive for students which increases their motivation to learn.

Francesco Mondada; Michael Bonani; Xavier Raemy; James Pugh; Christopher Cianci; Adam Klaptocz; Jean-Christophe Zufferey; Dario Floreano; Alcherio Martinoli

241

Augmented Reality Comes to Physics  

NASA Astrophysics Data System (ADS)

Augmented reality (AR) is a technology used on computing devices where processor-generated graphics are rendered over real objects to enhance the sensory experience in real time. In other words, what you are really seeing is augmented by the computer. Many AR games already exist for systems such as Kinect and Nintendo 3DS and mobile apps, such as Tagwhat and Star Chart (a must for astronomy class). The yellow line marking first downs in a televised football game2 and the enhanced puck that makes televised hockey easier to follow3 both use augmented reality to do the job.

Buesing, Mark; Cook, Michael

2013-04-01

242

Ultra-Compact Motor Controller  

NASA Technical Reports Server (NTRS)

This invention is an electronically commutated brushless motor contro ller that incorporates Hall-array sensing in a small, 42-gram packag e that provides 4096 absolute counts per motor revolution position s ensing. The unit is the size of a miniature hockey puck, and is a 44 -pin male connector that provides many I/O channels, including CANbus , RS-232 communications, general-purpose analog and digital I/O (GPI O), analog and digital Hall inputs, DC power input (18-90 VDC, 0-l0 A), three-phase motor outputs, and a strain gauge amplifier.

Townsend, William T.; Cromwell, Adam; Hauptman, Traveler; Pratt, Gill Andrews

2012-01-01

243

Updated On: 3/21/2014 15:44 Teams: Dont Puck WIth Us points Combat Wombats points  

E-print Network

Casey Mullane 0 Luke Fisher 0 Jenny Yan 0 Matt Cardonick 0 Mei Bruist 0 Daniel Mcloone 0 Alexandria Grimaldi 0 Rebecca Rosenblum 0 Brian Wyer 0 Kenneth Lau 0 Walker Mayerchak 0 Rachel Iaconis 0 Sam Letcher 0

Sridhar, Srinivas

244

A former hockey player with knee and calf pain.  

PubMed

A 37-year-old man presented with severe pain in his left knee and calf. He had no other joint pain, fever, chills, or dysuria. He had previously gone to another hospital, where x-rays of the knees and legs reportedly showed inflammation and arthritis. He had been given oxycodone-acetaminophen, but the pain continued. PMID:8814117

Patel, K; D'Agostino, A M

1996-09-15

245

Video gaming promotes concussion knowledge acquisition in youth hockey players  

Microsoft Academic Search

While the positive uses for video games in an educational setting have also been established, the educational aim is usually made explicit. The goal of this research was to develop a video game wherein the educational aspect was implicitly embedded in the video game, such that the gameing activity remained interesting and relevant. Following a pilot study to confirm the

David Goodman; Nori L. Bradley; Bradley Paras; Ian J. Williamson; James Bizzochi

2006-01-01

246

Video Gaming Promotes Concussion Knowledge Acquisition in Youth Hockey Players  

ERIC Educational Resources Information Center

While the positive uses for video games in an educational setting have also been established, the educational aim is usually made explicit. The goal of this research was to develop a video game wherein the educational aspect was implicitly embedded in the video game, such that the gameing activity remained interesting and relevant. Following a…

Goodman, David; Bradley, Nori L.; Paras, Bradley, Williamson, Ian J.; Bizzochi, James

2006-01-01

247

Management: Global positioning and wireless dispatching  

SciTech Connect

Over the last several years, my company has been supplying many service companies with wireless dispatching solutions. Recently the impact of the system has been greatly increased with the introduction of a GPS (Global Position Systems) interface. This adds visual recognition as to the whereabouts of each vehicle within the customer service area. The only equipment required in the field for GPS is a transmit/receive device and a wireless modem, one mounted out of the way in the vehicle (under the seat) and a {open_quotes}hockey puck{close_quotes} size unit on the roof of the vehicle. The GPS received unit and wireless modem are used to retrieve the longitude, latitude and ground speed coordinates and transmit them back to the host system.

Wood, M. [ICC International, Cedar Knolls, NJ (United States)

1996-02-01

248

Insulin Delivery System  

NASA Technical Reports Server (NTRS)

When Programmable Implantable Medication System (PIMS) is implanted in human body, it delivers precise programmed amounts of insulin over long periods of time. Mini-Med Technologies has been refining the Technologies since initial development at APL. The size of a hockey puck, and encased in titanium shell, PIMS holds about 2 1/2 teaspoons of insulin at a programmed basal rate. If a change in measured blood sugar level dictates a different dose, the patient can vary the amount of insulin delivered by holding a small radio transceiver over the implanted system and dialing in a specific program held in the PIMS computer memory. Insulin refills are accomplished approximately 4 times a year by hypodermic needle.

1988-01-01

249

EPMA Instructions for Thin Film Samples General guidelines to reading computer related commands  

E-print Network

EPMA Instructions for Thin Film Samples General guidelines to reading computer related commands- = refers to a command given by the computer = button Making an EPMA puck 1. Get a puck, 5 min epoxy is dry the epoxy on your puck will be dry. It is then OK to take the puck over to the EPMA facility

250

Experienced hockey coach and defense attorney with Machiaveliian leadership skills in  

E-print Network

DucatiOn CINDY J.H.YEN National Chengchi University B.A. in Public Finance Expected Graduate Date June 2012 / Taipei, Taiwan · Relevant Coursework: Corporate Finance, Public Finance, Financial Report Analysis

Ouhyoung, Ming

251

Hockey Night in Canada and Waltzing Matilda: Examining Culture in a Global Classroom.  

ERIC Educational Resources Information Center

This paper, the result of a collaboration between professors at the University of Calgary in Canada and Ararat Community College in Victoria (Australia), was presented at the 2001 Teaching the in Community Colleges Conference, "Teaching and Learning: What Have We Discovered and Where Are We Headed?" In this paper, the authors describe their…

Jacobsen, Michele; Tate, Joanne

252

Coach Selections and the Relative Age Effect in Male Youth Ice Hockey  

ERIC Educational Resources Information Center

Relative age effects (RAEs; when relatively older children possess participation and performance advantages over relatively younger children) are frequent in male team sports. One possible explanation is that coaches select players based on physical attributes, which are more likely witnessed in relatively older athletes. Purpose: To determine if…

Hancock, David J.; Ste-Marie, Diane M.; Young, Bradley W.

2013-01-01

253

The Validity and Reliability of a Performance Assessment Procedure in Ice Hockey  

ERIC Educational Resources Information Center

Background: Coaches and physical educators must obtain valid data relating to the contribution of each of their players in order to assess their level of performance in team sport competition. This information must also be collected and used in real game situations to be more valid. Developed initially for a physical education class context, the…

Nadeau, Luc; Richard, Jean-Francois; Godbout, Paul

2008-01-01

254

Relative Age Effects and the PhD 1 Revisiting Gladwell's Hockey Players  

E-print Network

relatively longer careers in the NHL and participate disproportionately in elite levels of competition (i diagnosed with learning disabilities. In a study of German students for whom decisions are made at age 10

Danforth, Bryan Nicholas

255

An Examination of the Relative Age Effect in Developmental Girls' Hockey in Ontario  

ERIC Educational Resources Information Center

The relative age effect (RAE) suggests that athletes may be provided with greater opportunities for success depending on the position of their birthdate in a sport's selection year. While the effect has been well established in men's sports, less is known about women's sports. This study examined the RAE in developmental girls'…

Smith, Kristy L.; Weir, Patricia L.

2013-01-01

256

Exploring Coaching Actions Based on Developed Values: A Case Study of a Female Hockey Coach  

ERIC Educational Resources Information Center

There are few empirical studies that demonstrate how values are developed and how they are linked to coaching actions. There can be a discrepancy between the statement of coaches' values and their actual coaching actions. In order to examine how coaching actions are influenced by values that are developed over a lifetime, the purpose of this…

Callary, Bettina; Werthner, Penny; Trudel, Pierre

2013-01-01

257

The evolution of subtle manoeuvres in simulated hockey Alan D. Blair?  

E-print Network

of robot controllers. A near-frictionless playing surface is employed, partially mimicking zero gravity, hardware designs that will sustain a robot operating in zero gravity have been investigated. The Zero are rectangular in shape aordingdevelopmentofstrategies involvinginter- nal movement and co-ordination dierent

Blair, Alan

258

The evolution of subtle manoeuvres in simulated hockey Alan D. Blair?  

E-print Network

of robot controllers. A near-frictionless playing surface is employed, partially mimicking zero gravity that will sustain a robot operating in zero gravity have been investigated. The Zero-G robot (Raibert et al., 1989 aordingdevelopmentofstrategies involvinginter- nal movement and co-ordination dierent from those of circular players. In addition

Pollack, Jordan B.

259

The evolution of subtle manoeuvres in simulated hockey Alan D. Blair ? & Elizabeth Sklar ??  

E-print Network

of robot controllers. A near­frictionless playing surface is employed, partially mimicking zero gravity, hardware designs that will sustain a robot operating in zero gravity have been investigated. The Zero players are rectangular in shape affording development of strategies involving inter­ nal movement and co

Blair, Alan

260

The evolution of subtle manoeuvres in simulated hockey Alan D. Blair ? & Elizabeth Sklar ??  

E-print Network

of robot controllers. A near­frictionless playing surface is employed, partially mimicking zero gravity the conditions found in outer space. Lately, hardware designs that will sustain a robot operating in zero gravity players are rectangular in shape affording development of strategies involving inter­ nal movement and co

Pollack, Jordan B.

261

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN MEN'S ICE HOCKEYWESLEYAN MEN'S ICE HOCKEY  

E-print Network

Certified Athletic Trainer....Vicky Graham Equipment Manager..........Bob Chiapetta Equipment Room AttendantKenna Men's Lacrosse/Asst. AD ..John Raba Women's Lacrosse ............Holly Wheeler Men's Soccer

Devoto, Stephen H.

262

Bose-Einstein condensation in dark power-law laser traps  

E-print Network

We investigate theoretically an original route to achieve Bose-Einstein condensation using dark power-law laser traps. We propose to create such traps with two crossing blue-detuned Laguerre-Gaussian optical beams. Controlling their azimuthal order $\\ell$ allows for the exploration of a multitude of power-law trapping situations in one, two and three dimensions, ranging from the usual harmonic trap to an almost square-well potential, in which a quasi-homogeneous Bose gas can be formed. The usual cigar-shaped and disk-shaped Bose-Einstein condensates obtained in a 1D or 2D harmonic trap take the generic form of a "finger" or of a "hockey puck" in such Laguerre-Gaussian traps. In addition, for a fixed atom number, higher transition temperatures are obtained in such configurations when compared with a harmonic trap of same volume. This effect, which results in a substantial acceleration of the condensation dynamics, requires a better but still reasonable focusing of the Laguerre-Gaussian beams.

Amine Jaouadi; Naceur Gaaloul; Bruno Viaris De Lesegno; Mourad Telmini; Laurence Pruvost; Eric Charron

2009-09-28

263

Bose-Einstein condensation in dark power-law laser traps  

SciTech Connect

We investigate theoretically an original route to achieve Bose-Einstein condensation using dark power-law laser traps. We propose to create such traps with two crossing blue-detuned Laguerre-Gaussian optical beams. Controlling their azimuthal order l allows for the exploration of a multitude of power-law trapping situations in one, two, and three dimensions, ranging from the usual harmonic trap to an almost square-well potential, in which a quasihomogeneous Bose gas can be formed. The usual cigar-shaped and disk-shaped Bose-Einstein condensates obtained in a 1D or 2D harmonic trap take the generic form of a 'finger' or of a 'hockey puck' in such Laguerre-Gaussian traps. In addition, for a fixed atom number, higher transition temperatures are obtained in such configurations when compared with a harmonic trap of the same volume. This effect, which results in a substantial acceleration of the condensation dynamics, requires a better but still reasonable focusing of the Laguerre-Gaussian beams.

Jaouadi, A. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 France (France); Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Gaaloul, N. [Institut fuer Quantenoptik, Welfengarten 1, Gottfried Wilhelm Leibniz Universitaet, D-30167 Hannover (Germany); Viaris de Lesegno, B.; Pruvost, L. [CNRS, Laboratoire Aime Cotton (LAC), F-91405 Orsay (France); Universite Paris-Sud, Orsay, F-91405 France (France); Telmini, M. [Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Charron, E. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 (France)

2010-08-15

264

Sport at City Your guide to getting involved  

E-print Network

and fitness classes for both our students and staff. Sport has long played an important role in university's Hockey Charlotte McPike Women's Hockey Hettie Hobbs Women's Hockey Jane McConnell Women's Hockey Chloe OMoore-Rugby SportsWomanoftheYear JaneMcConnell-Women'sHockey SportsManoftheYear HarryMarson-Rugby Sports

Weyde, Tillman

265

The Effect Of Game Day Promotions On Consumer Behavior In The East Coast Hockey League(ECHL)  

Microsoft Academic Search

Factors associated with attendance at sporting events has been well documented in recent literature. Numerous studies have been conducted in college and professional sports, yet little work to date has examined factors associated with attendance in the minor leagues. Very few studies have specifically investigated special game day promotions at the minor league level. Based on the absence of some

Brian Edmund Pruegger

2003-01-01

266

Employment Law, Negotiation, and the Business Environment: A Cooperative Collective Bargaining Negotiation of the National Hockey League Lockout of 2004  

ERIC Educational Resources Information Center

Employment law is a "must-cover" subject in business environment courses. Comparing the plethora of topics requiring coverage with the limited time devoted to employment law during a typical academic term, other important employment subjects--such as negotiation and collective bargaining--commonly receive short shrift. This article offers a…

Ciocchetti, Corey A.

2008-01-01

267

Measurement of Hybrid III Head Impact Kinematics Using an Accelerometer and Gyroscope System in Ice Hockey Helmets.  

PubMed

Helmet-based instrumentation is used to study the biomechanics of concussion. The most extensively used systems estimate rotational acceleration from linear acceleration, but new instrumentation measures rotational velocity using gyroscopes, potentially reducing error. This study compared kinematics from an accelerometer and gyroscope-containing system to reference measures. A Hybrid III (HIII) adult male anthropometric test device head and neck was fit with two helmet brands, each instrumented with gForce Tracker (GFT) sensor systems in four locations. Helmets were impacted at various speeds and directions. Regression relationships between GFT-measured and reference peak kinematics were quantified, and influence of impact direction, sensor location, and helmet brand was evaluated. The relationship between the sensor output and the reference acceleration/velocity experienced by the head was strong. Coefficients of determination for data stratified by individual impact directions ranged from 0.77 to 0.99 for peak linear acceleration and from 0.78 to 1.0 for peak rotational velocity. For the data from all impact directions combined, coefficients of determination ranged from 0.60 to 0.80 for peak resultant linear acceleration and 0.83 to 0.91 for peak resultant rotational velocity. As expected, raw peak resultant linear acceleration measures exhibited large percent differences from reference measures. Adjustment using regressions resulted in average absolute errors of 10-15% if regression adjustments were done by impact direction or 25-40% if regressions incorporating data from all impact directions were used. Average absolute percent differences in raw peak resultant rotational velocity were much lower, around 10-15%. It is important to define system accuracy for a particular helmet brand, sensor location, and impact direction in order to interpret real-world data. PMID:25476162

Allison, Mari A; Kang, Yun Seok; Maltese, Matthew R; Bolte, John H; Arbogast, Kristy B

2014-12-01

268

THE EFFECT OF STICK CURVATURE ON WRIST SHOT EXECUTION OF PEEWEE AND JUNIOR AGED ICE HOCKEY PLAYERS  

Microsoft Academic Search

INTRODUCTION: Research on stick curvature is very important to the understanding of its effect on shot velocity and accuracy. In the past, studies have been focused on analysis of stick rigidity, skating and skate design (Lamontagne et aI., 2001). The purpose of the present study is to evaluate the effects of stick curvature on the execution of a wrist shot

Daniel Theoret; Mario Lamontagne; Marshall Kendall; Stefan Potoczny

2002-01-01

269

Perfectionism and achievement goals in young Finnish ice-hockey players aspiring to make the Under16 national team  

Microsoft Academic Search

Research on perfectionism suggests that is it useful to differentiate between perfectionistic strivings and perfectionistic concerns. Regarding the 2 × 2 achievement goal framework, the usefulness of this differentiation was recently demonstrated in a study with university student athletes (Stoeber, Stoll, Pescheck, & Otto, 2008, Study 2), in which it was found that perfectionistic strivings were associated with mastery-approach and performance-approach goals

Joachim Stoeber; Oliver Stoll; Olli Salmi; Jukka Tiikkaja

2009-01-01

270

The Reverse Favorite—Longshot Bias in the National Hockey League: Do Bettors Still Score on Longshots?  

Microsoft Academic Search

The favorite—longshot bias, the tendency of bettors to underbet favorites and overbet longshots (underdogs), has received considerable attention in the economics and finance literature. Although the bias is prevalent in racetrack betting, with pari-mutuel odds, researchers have detected a reverse bias in two fixed-odds betting markets in the United States. A weak bias was documented for Major League Baseball for

Linda M. Woodland; Bill M. Woodland

2011-01-01

271

The Annals of Applied Statistics 2013, Vol. 7, No. 3, 14971524  

E-print Network

observations. The study of goal-based team sports--ice hockey, field hockey, basketball, soc- cer and lacrosse hockey, player abilities are historically quantified by citing offensive statistics, such as goals into segments of a minute each, the fact that most hockey games have fewer than ten total goals means

Jensen, Shane T.

272

The effect of metal particle size on blast performance of RDX and TATB based explosives  

Microsoft Academic Search

This paper discusses the role that particle size of aluminum has on the internal blast performance of explosives. Tests were performed using a small sealed chamber and a larger open-ended shock tube. Two sets of explosive formulations were tested. One is TATB based and the other RDX. The TATB was an aluminized LX-17 formulation while the RDX was based on

Jeffery Davis; Phillip Miller

2001-01-01

273

Insensitive HE EOS  

SciTech Connect

A typical insensitive high explosive such as LX-17 has a large carbon-content and produces hydrogen fluoride (HF) as a detonation product. It is also characterized by slow energy release as indicated by a large curvature of the detonation front. We analyze these new physics issues which are needed to predict the performance of a insensitive high explosive. (U)

Ree, F.H.; Viecelli, J.; van Thiel, M.

1997-12-01

274

Modeling Hemispheric Detonation Experiments in 2-Dimensions  

SciTech Connect

Experiments have been performed with LX-17 (92.5% TATB and 7.5% Kel-F 800 binder) to study scaling of detonation waves using a dimensional scaling in a hemispherical divergent geometry. We model these experiments using an arbitrary Lagrange-Eulerian (ALE3D) hydrodynamics code, with reactive flow models based on the thermo-chemical code, Cheetah. The thermo-chemical code Cheetah provides a pressure-dependent kinetic rate law, along with an equation of state based on exponential-6 fluid potentials for individual detonation product species, calibrated to high pressures ({approx} few Mbars) and high temperatures (20000K). The parameters for these potentials are fit to a wide variety of experimental data, including shock, compression and sound speed data. For the un-reacted high explosive equation of state we use a modified Murnaghan form. We model the detonator (including the flyer plate) and initiation system in detail. The detonator is composed of LX-16, for which we use a program burn model. Steinberg-Guinan models5 are used for the metal components of the detonator. The booster and high explosive are LX-10 and LX-17, respectively. For both the LX-10 and LX-17, we use a pressure dependent rate law, coupled with a chemical equilibrium equation of state based on Cheetah. For LX-17, the kinetic model includes carbon clustering on the nanometer size scale.

Howard, W M; Fried, L E; Vitello, P A; Druce, R L; Phillips, D; Lee, R; Mudge, S; Roeske, F

2006-06-22

275

FLOOR HOCKEY RULES -MEN'S, WOMEN'S & CO-REC Each player must present his/her valid UMass UCard to participate in each and every intramural contest.  

E-print Network

, necklaces, watches and earrings, is illegal. Also, hats and bandanas are not permitted. Taping of earrings. 2. Teams will switch sides after each period; except for overtime. 3. The clock will continuously run through the first two periods. a. The clock will stop with two minutes or less to play

Massachusetts at Amherst, University of

276

Femoroacetabular Impingement in Professional Ice Hockey PlayersA Case Series of 5 Athletes After Open Surgical Decompression of the Hip  

Microsoft Academic Search

Background: Femoroacetabular impingement of the hip joint has been identified as a major cause for hip pain in athletes. Surgical open decompression of the hip has historically been proposed as the first treatment of choice. Functional outcomes in athletes after this procedure are unknown.Purpose: To describe the functional and sport-related outcome 2 years after open surgical hip decompression in a

Mario Bizzini; Hubert P. Notzli; Nicola A. Maffiuletti

2007-01-01

277

Establishing the Test-Retest Reliability & Concurrent Validity for the Repeat Ice Skating Test (RIST) in Adolescent Male Ice Hockey Players  

ERIC Educational Resources Information Center

In this study the authors examine the test-retest reliability and concurrent validity of the Repeat Ice Skating Test (RIST). This was an on-ice field anaerobic test that measured average peak power and was validated with 3 anaerobic lab tests: (a) vertical jump, (b) the Margaria-Kalamen stair test, and (c) the Wingate Anaerobic Test. The…

Power, Allan; Faught, Brent E.; Przysucha, Eryk; McPherson, Moira; Montelpare, William

2012-01-01

278

Quadriceps Contusion  

MedlinePLUS

... lot of direct contact, such as football and hockey. They're also a risk in sports where ... play sports: Wear protective gear that fits correctly. Hockey and football require pants that should have thigh ...

279

Math 10120 --Finite Mathematics Some Counting Problems  

E-print Network

Hockey: Notre dame hockey has a 26-man roster, of which exactly three are goaltenders. Each game day of the six starters, with the goal- tender announced last. How many options does he have in total? 1 #12

Galvin, David

280

Meniscus Tears  

MedlinePLUS

... common sports injury, particularly in contact sports like football and hockey. Meniscus tears can range from minor ... knee while playing a contact sport, such as football, hockey, or rugby, where the knee may be ...

281

Sport Clubs RECord Handball--Dec 4-6  

E-print Network

Meet Austin, TX Ice Hockey--Jan 15-16 Vs. UT-San Antonio Arctic Wolf Ice Arena Ice Hockey--Jan 23 Building Ice Hockey--Jan 29 Vs. Texas Arctic Wolf Ice Arena Ice Hockey--Jan 30 @ Texas Chaparral Ice Arena goals is to have a future-oriented mindset. Where will your club be in 5 years? 10 years? One way

282

Hospitality Pavilion ......................................................... RESERVED Multimedia Theater-Style Classroom ........................ RESERVED  

E-print Network

.....................................$5,000,000 Individual Training Stations (Equipment)......................$250,000 Head Strength........................................................................... RESERVED Field Hockey................................................................... RESERVED Lacrosse

Adams, Mark

283

Ultra-Compact Motor Controller  

NASA Technical Reports Server (NTRS)

This invention is an electronically commutated brushless motor controller that incorporates Hall-array sensing in a small, 42-gram package that provides 4096 absolute counts per motor revolution position sensing. The unit is the size of a miniature hockey puck, and is a 44-pin male connector that provides many I/O channels, including CANbus, RS-232 communications, general-purpose analog and digital I/O (GPIO), analog and digital Hall inputs, DC power input (18-90 VDC, 0-l0 A), three-phase motor outputs, and a strain gauge amplifier. This controller replaces air cooling with conduction cooling via a high-thermal-conductivity epoxy casting. A secondary advantage of the relatively good heat conductivity that comes with ultra-small size is that temperature differences within the controller become smaller, so that it is easier to measure the hottest temperature in the controller with fewer temperature sensors, or even one temperature sensor. Another size-sensitive design feature is in the approach to electrical noise immunity. At a very small size, where conduction paths are much shorter than in conventional designs, the ground becomes essentially isopotential, and so certain (space-consuming) electrical noise control components become unnecessary, which helps make small size possible. One winding-current sensor, applied to all of the windings in fast sequence, is smaller and wastes less power than the two or more sensors conventionally used to sense and control winding currents. An unexpected benefit of using only one current sensor is that it actually improves the precision of current control by using the "same" sensors to read each of the three phases. Folding the encoder directly into the controller electronics eliminates a great deal of redundant electronics, packaging, connectors, and hook-up wiring. The reduction of wires and connectors subtracts substantial bulk and eliminates their role in behaving as EMI (electro-magnetic interference) antennas. A shared knowledge by each motor controller of the state of all the motors in the system at 500 Hz also allows parallel processing of higher-level kinematic matrix calculations.

Townsend, William T.; Crowell, Adam; Hauptman, Traveler; Pratt, Gill Andrews

2012-01-01

284

Multimed Tools Appl DOI 10.1007/s11042-010-0722-9  

E-print Network

hidden Markov model Xiaofeng Wang · Xiao-Ping Zhang © Springer Science+Business Media, LLC 2011 Abstract hockey videos. Hockey is a competitive sport and hockey videos are hard to analyze because content and computer vision analysis is dominated by content-based image and video indexing and retrieval

Zhang, Xiao-Ping

285

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN MEN'S SQUASHWESLEYAN MEN'S SQUASH  

E-print Network

......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black Intramural........................Phil Carney Women's Crew...................Pat Tynan M/W Cross Country ...........John Crooke Field Hockey....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

286

2012 PROSPECTUS WESLEYAN SOFTBALL  

E-print Network

Attendant......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black........................Phil Carney Women's Crew...................Pat Tynan M/W Cross Country ...........John Crooke Field Hockey....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

287

F R I D A Y 1 9 S E P T E M B E R 2 0 1 4 V O L 1 # 1 3 The Wits men's team have made the USSA Gauteng Foot-  

E-print Network

to come support our boys, e-mail Dennis at ntuthuko.tshabalala@wits.ac.za HOCKEY NEW SUMMER LEAGUE unleashed a peach of a drop goal from close to the touchline, breaking Masakhane hearts and sealing SEASON Wits Hockey's new Summer League commences on Wednes- day 1 October at the Wits Hockey Stadium

Wagner, Stephan

288

PHOTO:MARTINDEE Getting to Beijing  

E-print Network

. "For field hockey players, qualifying for the Olympics is our Stanley Cup. You train with one goal Anthony Wright takes to the field hockey pitch in Beijing this summer. In what surely is an Olympic record and field), mother Thelma Wright (1972, 1976; 1,500 m run) and father Lee Wright (1964, 1976; field hockey

Farrell, Anthony P.

289

University of New Hampshire Office of Athletics Development  

E-print Network

to the late Ed Fish '58, who passed away on June 15, 2010. Fish, a football and ice hockey participant during Apollo '86 (women's ice hockey), Robert Black '77 (men's soccer), Marcie Boyer '03 (field hockey), Lou D director's priorities. Our annual fundraising goal for this fiscal year is $650,000. Help us continue to do

New Hampshire, University of

290

READ THEM, LEARN THEM, LIVE THEM! PLEASE LOCK UP JACKET, CLOTHES AND ALL PERSONAL BELONGINGS IN THE LOCKER  

E-print Network

MUST STAY ON SPORTCOURT AND BATHROOM END OF HALLWAY WITH SKATES! ONLY SHOOT AT A HOCKEY GOAL FROM THE MARINO CENTER! HOCKEY IS PERMITTED ON SPORTCOURT ONLY WHEN SCHEDULED! COURT SCHEDULE POSTED DOORS CLOSED AT ALL TIMES WHILE PLAYING HOCKEY! THE CHAIRS ARE FOR SITTING AND SITTING ONLY! WHEN MOVING

Sridhar, Srinivas

291

UNIVERSITY OF MASSACHUSETTS INTRAMURAL SPORTS  

E-print Network

1 UNIVERSITY OF MASSACHUSETTS INTRAMURAL SPORTS WOMEN'S FIELD HOCKEY RULES The International Hockey Federation Rules of Hockey with NCAA modifications will govern play with the following intramural be awarded for an intentional offense by a defender in the circle to prevent a goal being scored

Massachusetts at Amherst, University of

292

University of Massachusetts Lowell Campus Recreation  

E-print Network

is a game very much like hockey. Most hockey rules apply, except that the game is played with a regulation. The game is played on an ice hockey rink (Tsongas Arena). Players are not allowed to wear skates. A coin toss at the beginning of the game will determine which goal will be defended. Broomball is played

Massachusetts at Lowell, University of

293

Combining Textual Pre-game Reports and Statistical Data for Predicting Success  

E-print Network

have been used to estimate rates at which National Hockey League (NHL) teams score and yield goals [5 Hockey League Josh Weissbock and Diana Inkpen University of Ottawa, Ottawa, Canada {jweis035,diana.inkpen}@uottawa.ca Abstract. In this paper, we create meta-classifiers to forecast success in the National Hockey League. We

Inkpen, Diana

294

BOSTONIA WinterSpring 2013 freshman, but the 18-year-  

E-print Network

of the 2012 NHL Entry Draft. "Playing hockey and getting the chance to play Division I, obviously your goal to becoming a hometown success story for hockey-crazed Boston. Grzelcyk (SMG'16) grew up a rink rat to play Division I hockey at BU, and in summer 2012 he was chosen by the Boston Bruins in the third round

Goldberg, Bennett

295

Discovering Generalized Concepts from Documents Using a Category Graph  

E-print Network

in a somewhat broader topic area. For example, topics for a document on the San Jose Sharks could be San Jose Sharks, Hockey Team Mascots, NHL Teams, National Hockey League, Hockey, or Sports, de- pending. The technique is a modification of the page rank algorithm and takes a user-selectable parameter to bias

Boley, Daniel

296

The effect of metal particle size on blast performance of RDX and TATB based explosives  

NASA Astrophysics Data System (ADS)

This paper discusses the role that particle size of aluminum has on the internal blast performance of explosives. Tests were performed using a small sealed chamber and a larger open-ended shock tube. Two sets of explosive formulations were tested. One is TATB based and the other RDX. The TATB was an aluminized LX-17 formulation while the RDX was based on PBXN-109. The Al particle size examined was 20 micron and 150 nanometer in pressed compositions. PBXN-109 and LX-17 were also tested. A noticeable difference in the internal blast pressure was observed between the 20 micron and 150 nm Al. The experimental results compare favorably with modeling work performed

Davis, Jeffery; Miller, Phillip

2001-06-01

297

Temperature-dependent shock initiation of TATB-based high explosives  

SciTech Connect

The effects of temperature on the shock sensitivity of two TATB formulations PBX 9502 and LX-17 are studied over the temperature range {minus}54{degrees}C to 252{degrees}C. The shock Hugoniot curves over this same temperature range are developed. Thermal expansion properties and porosities are used to help determine the mechanisms of thermal sensitization. Impact sensitivities over the range from ambient to 300{degrees}C are reported. Analyses of these results imply that thermal sensitization is the result of purely chemical kinetics enhancement and intracrystalline hot-spot growth. Additional results on the ambient shock sensitivity of PBX 9502 and LX-17 following thermal cycling to 252{degrees}C and back to ambient is presented.

Dallman, J.C.; Wackerle, J.

1993-10-01

298

SHOCK INITIATION EXPERIMENTS ON THE TATB BASED EXPLOSIVE RX-03-GO WITH IGNITION AND GROWTH MODELING  

SciTech Connect

Shock initiation experiments on the TATB based explosive RX-03-GO (92.5% TATB, 7.5% Cytop A by weight) were performed to obtain in-situ pressure gauge data, characterize the run-distance-to-detonation behavior, and calculate Ignition and Growth modeling parameters. A 101 mm diameter propellant driven gas gun was utilized to initiate the explosive sample with manganin piezoresistive pressure gauge packages placed between sample slices. The RX-03-GO formulation utilized is similar to that of LX-17 (92.5% TATB, 7.5% Kel-f by weight) with the notable differences of a new binder material and TATB that has been dissolved and recrystallized in order to improve the purity and morphology. The shock sensitivity will be compared with that of prior data on LX-17 and other TATB formulations. Ignition and Growth modeling parameters were obtained with a reasonable fit to the experimental data.

Vandersall, K S; Garcia, F; Tarver, C M

2009-06-23

299

Detonation waves in triaminotrinitrobenzene  

Microsoft Academic Search

FabryâPerot laser interferometry is used to obtain nanosecond time resolved particle velocity histories of the free surfaces of copper, tantalum, or magnesium disks driven by detonating triaminotrinitrobenzene (TATB)-based charges and of the interfaces between detonating TATB and transparent salt crystals. Detonation reaction zone profiles are measured for self-sustaining detonation waves propagating through various thicknesses of LX-17 (92.5% TATB and 7.5%

Craig M. Tarver; John W. Kury; R. Don Breithaupt

1997-01-01

300

Detonation waves in triaminotrinitrobenzene  

Microsoft Academic Search

Fabry–Perot laser interferometry is used to obtain nanosecond time resolved particle velocity histories of the free surfaces of copper, tantalum, or magnesium disks driven by detonating triaminotrinitrobenzene (TATB)-based charges and of the interfaces between detonating TATB and transparent salt crystals. Detonation reaction zone profiles are measured for self-sustaining detonation waves propagating through various thicknesses of LX-17 (92.5% TATB and 7.5%

Craig M. Tarver; John W. Kury; R. Don Breithaupt

1997-01-01

301

Jack Rabbit Pretest 2021E PT4 Photonic Doppler Velocimetry Data Volume 4 Section 1  

Microsoft Academic Search

The Jack Rabbit Pretest (PT) 2021E PT4 was fired on March 19, 2008 at the Contained Firing Facility, Site 300, Lawrence Livermore National Laboratory. This experiment is part of an effort to determine the properties of LX-17 in a regime where corner-turning behavior and dead-zone formation are not well understood. Photonic Doppler Velocimetry (PDV) measured diagnostic plate velocities confirming the

M M Hart; O T Strand; S T Bosson; R A Bonner; D M Hester

2008-01-01

302

Lightning-resistant, low-inductance detonator cables  

SciTech Connect

A lightning strike on a flat detonator cable in close proximity to a high explosive (HE) main charge poses a possible detonation hazard if the electrical explosion of the cable launches the dielectric cover coat of the cable at a high enough velocity to shock-initiate the HE. The detonator cable for the W87 system has been demonstrated to be incapable of initiating LX-17 main-charge explosive even for a 99 percentile negative lightning strike (1). The W87 cable is a relatively high inductance cable, unsuitable for use with low-inductance firesets. We have performed tests on a low-inductance cable designed for the W89 program, which show it to be marginal in its ability to withstand a lightning strike without the possibility of initiating a heated LX-17 main charge HE. A new cable design, proposed by R.E. Lee of LLNL has been tested and shown to be capable of withstanding a 99 percentile negative lightning strike without initiating LX-17 heated to 250{degree}C.

Druce, R.L.; Lee, R.S.; Moua, K.

1994-04-01

303

Lab III -1 LABORATORY III  

E-print Network

surface (felt or wood) to use for the game. If there is too much friction, no one will ever get the puck that is similar to the picture in the Equipment section. Draw and label vectors to indicate the direction

Minnesota, University of

304

Computer Workstation: Pointer/Mouse  

MedlinePLUS

... and pucks, to name a few. Selection and placement of a pointer/mouse is an important factor ... following factors when evaluating your computer workstation. Pointer Placement Pointer Size, Shape, and Settings Pointer Placement Potential ...

305

FOR TICKETS AND INFO VISIT PIFA.ORG OR  

E-print Network

& Video 24 Food & Fashion 27 Kids & Families 28 Music 33 Outdoor 45 Speakers & Salons 47 Theatre 52 Tours of Stravinsky's Pulcinella. Dinner by Wolfgang Puck in honor of Chef Georges Perrier, featuring a pre-dessert

Plotkin, Joshua B.

306

McMaster University Risk Management  

E-print Network

glued down to polishing puck with crystal bond melted on a hot plate.) Cut 3mm disc from polished/thinning of solid GaAs wafers on abrasive paper/film i.e. SiC, diamond, with water as lubricant. (Samples are first/thinned sample using ultrasonic cutter. Water drop used as lubricant. (Sample is first glued down to puck.) Make

Thompson, Michael

307

Growth of Superconducting Bulk Single Crystals and their use in Leviation Demonstrations  

NASA Astrophysics Data System (ADS)

We present our work on the growth of bulk single-crystal YBa2Cu3O7 and a novel superconducting demonstration using our superconductors. We report the first successful fabrication at the undergraduate level of YBa2Cu3O7 superconducting pucks with enhanced flux-pinning properties. We follow a bulk superconductor growth recipe developed by Dr. Kazumasa Iida at the Institute for Metallic Materials in Dresden, Germany. In order to grow a puck that is largely single crystalline in phase, it is necessary to mix portions of both superconducting (YBa2Cu3O7) and non-superconducting (Y2BaCuO5) phases together and fire them at near liquefying temperatures. This process is known as melt-textured growth. We have also constructed a figure-8 track of strong permanent NdFeB magnets to demonstrate the dramatic effect of flux-pinning. This track is outfitted with an accelerator to keep the puck circling the track. We accelerate the puck to a speed that, without the introduction of enhanced flux-pinning, would cause the puck to be thrown from the track. We will show a video of our puck and novel demonstration.

Kotlyarevsky, A.; Sullivan, M. C.; Hunting, J.

2010-03-01

308

www.sport.bham.ac.uk Annual Review 200708  

E-print Network

strategic goals of increasing participation (student, staff and community), improving performance (to Centres for hockey, fencing, rugby league and badminton. One performance indicator that is raising concern

Heinke, Dietmar

309

2006 Wesleyan University Baseball 1 2006 Wesleyan University Baseball2  

E-print Network

Trainer ................................................Joe Fountain Equipment Manager .............................................Chris Potter Womens Ice Hockey .................................... Donna Wright Mens Lacrosse ................................................... John Raba Womens Lacrosse ....................................... Holly Wheeler Mens Soccer

Royer, Dana

310

2007 Wesleyan University Baseball 1 2007 Wesleyan University Baseball2  

E-print Network

................................................Joe Fountain Equipment Manager .......................................Bob Chiapetta Baseball History .............................................Chris Potter Women's Ice Hockey .................................... Donna Wright Men's Lacrosse ................................................... John Raba Women's Lacrosse ....................................... Holly Wheeler Men's Soccer

Royer, Dana

311

Detonator cable initiation system safety investigation: Consequences of energizing the detonator and actuator cables  

SciTech Connect

This study was performed to explore and assess the worst-case response of a W89-type weapons system, damaged so as to expose detonator and/or detonator safing strong link (DSSL) cables to the most extreme, credible lightning-discharge, environment. The test program used extremely high-current-level, fast-rise-time (1- to 2-{mu}s) discharges to simulate lightning strikes to either the exposed detonator or DSSL cables. Discharges with peak currents above 700 kA were required to explode test sections of detonator cable and launch a flyer fast enough potentially to detonate weapon high explosive (HE). Detonator-safing-strong-link (DSSL) cables were exploded in direct contact with hot LX-17 and Ultrafine TATB (UFTATB). At maximum charging voltage, the discharge system associated with the HE firing chamber exploded the cables at more than 600-kA peak current; however, neither LX-17 nor UFTATB detonated at 250{degree}C. Tests showed that intense surface arc discharges of more than 700 kA/cm in width across the surface of hot UFTATB [generally the more sensitive of the two insensitive high explosives (IHE)] could not initiate this hot IHE. As an extension to this study, we applied the same technique to test sections of the much-narrower but thicker-cover-layer W87 detonator cable. These tests were performed at the same initial stored electrical energy as that used for the W89 study. Because of the narrower cable conductor in the W87 cables, discharges greater than 550-kA peak current were sufficient to explode the cable and launch a fast flyer. In summary, we found that lightning strikes to exposed DSSL cables cannot directly detonate LX-17 or UFTATB even at high temperatures, and they pose no HE safety threat.

Osher, J.; Chau, H.; Von Holle, W.

1994-03-01

312

Bigplate: an oblique angle explosive EOS test  

SciTech Connect

Bigplate is an advanced explosive equation of state (EOS) test. It consists of a point detonator driving a large disc (100 mm radius) of explosive, which pushes a 0.5 mm thick copper or tantalum plate. The plate is observed by a five-beam Fabry-Perot interferometer, which has beams at 0, 10, 20,40 and 80 mm on the plate. A short Fabry gives the jump-off to high accuracy; a long Fabry runs out to I0-15 microsec. A detailed error analysis is given, with the final velocity measurements considered good to ±0.066 mm/microsec. Jump-offs are measured to 0.01-0.02 microsec. Spall is seen in all shots, which creates a time delay on both the first and second velocity plateaus. A 0.1 microsec delay in jump-off of unknown origin is also seen at 80 mm. In order of decreasing explosive ideality, the explosives tired have been LX-14, LX-04 and LX-17. To partially negate the time delays, the data and code runs are overlaid at each radial position between the first and second plateaus. Traditional JWL's model LX-14 and LX-04 within accuracy, but not so for LX-17. The spall may be partly modeled using the pmin model but high resolution zoning is required. At longer times, spall does not appear to affect the explosive energetics. Because it includes diagonal zone crossing, Bigplate occupies a location between simple plate and cylinder tests and truly complex geometries. Hence, an EOS that fails Bigplate is not likely to move on to more complex issues. Bigplate is an excellent test bed for radically new EOS's, and the initial LX-17 runs done with Equilibrium and KINETIC CHEETAH are promising.

Anderson, S; Avara, R; Fried, L; Janzen, J; McGuire, E; Souers, P C; Wu, B

1998-04-16

313

Free-Flying Magnetometer Data System  

NASA Technical Reports Server (NTRS)

The Free-Flying Magnetometer (FFM) is an autonomous "sensorcraft" developed at the Jet Propulsion Laboratory (JPL) for the Enstrophy sounding rocket mission. This mission was a collaborative project between the University of New Hampshire, Cornell University and JPL. The science goal of the mission was the study of current filamentation phenomena in the northern auroral region through multipoint measurements of magnetic field. The technical objective of the mission was the proof of concept of the JPL FFM design and the demonstration of an in-situ multipoint measurement technique employing many free-flying spacecraft. Four FFMs were successfully deployed from a sounding rocket launched from Poker Flats, Alaska on February 11, 1999. These hockey-puck-sized (80 mm diameter, 38 mm. height, 250 gram mass) free flyers each carry a miniature 3-axis flux-gate magnetometer that output +/- 2 V signals corresponding to a +/- 60,000 nT measurement range for each axis. The FFM uses a synchronized four-channel Sigma(Delta) Analog-to-Digital Converter (ADC) having a dynamic range of +/- 2.5V and converting at a rate of 279 samples/second/channel. Three channels are used to digitize the magnetometer signals to 17-bit (1.144 nT/bit) resolution. The fourth ADC channel is multiplexed for system monitoring of four temperature sensors and two battery voltages. The FFM also contains two sun sensors, a laser diode which emits a fan-shaped beam, a miniature S-band transmitter for direct communication to the ground station antennas, an ultra-stable Temperature Compensated Crystal Oscillator (TCXO) clock, an integrated data subsystem implemented in a Field-Programmable Gate Array (FPGA), a 4 Mbit Static Random Access Memory (SRAM) for data storage and Lithium Thionyl Chloride batteries for power. Communicating commands to the FFM prior to deployment is achieved with an infrared (IR) link. The FFM IR receiver responds to 9-bit pulse coded signals that are generated by an IR Light Emitting Diode (LED) in the payload for turning FFM power on or off and placing the FFM in a test mode or flight mode. The IR links are also used to synchronize (zero) the clocks onboard all the FFMs through a reset pulse originating from the payload GPS receiver that is issued when the FFMs are in flight mode. The FPGA based data subsystem manages continuous data collection from the four ADC channels and sun sensors, formatting and storing the data to SRAM, and controlling downlink transmission. The transmitter is powered only after a 2547 frame SRAM buffer has been filled (approx. 5 minutes of data). The data is Viterbi encoded and sent to the S-band transmitter via a First-In-First-Out (FIFO) buffer who's output is clocked at 100 bits/second. After the 26-second transmission, the transmitter is turned off to reduce noise coupling to the sensitive magnetometer. The data subsystem control consists of a master state machine that performs data flow management and is interfaced through a prioritized interrupt scheme to state machines that service the ADC, sun sensors and transmitter FIFO. Continuous data collection prevents the missing of data during transmission and provides implicit time tagging of the data acquired by the ADC because of synchronization with the TCXO clock.

Blaes, B.; Javadi, H.; Spencer, H.

2000-01-01

314

Insensitive fuze train for high explosives  

DOEpatents

A generic insensitive fuze train to initiate insensitive high explosives, such as PBXW-124. The insensitive fuze train uses a slapper foil to initiate sub-gram quantities of an explosive, such as HNS-IV or PETN. This small amount of explosive drives a larger metal slapper onto a booster charge of an insensitive explosive, such as UF-TATB. The booster charge initiates a larger charge of an explosive, such as LX-17, which in turn, initiates the insensitive high explosive, such as PBXW-124.

Cutting, Jack L. (Livermore, CA); Lee, Ronald S. (Livermore, CA); Von Holle, William G. (Livermore, CA)

1994-01-01

315

Insensitive fuze train for high explosives  

SciTech Connect

A generic insensitive fuze train to initiate insensitive high explosives, such as PBXW-124 is described. The insensitive fuze train uses a slapper foil to initiate sub-gram quantities of an explosive, such as HNS-IV or PETN. This small amount of explosive drives a larger metal slapper onto a booster charge of an insensitive explosive, such as UF-TATB. The booster charge initiates a larger charge of an explosive, such as LX-17, which in turn, initiates the insensitive high explosive, such as PBXW-124. 3 figures.

Cutting, J.L.; Lee, R.S.; Von Holle, W.G.

1994-01-04

316

Public Broadcasting, Sport, and Cultural CitizenshipThe Future of Sport on the Canadian Broadcasting Corporation?  

Microsoft Academic Search

In this article we examine the recent debate over the continued role of the Canadian Broadcasting Corporation (CBC) in airing National Hockey League (NHL) games on its iconic television show, Hockey Night in Canada (HNIC) . Specifically, we outline the heightened competition between the CBC and private networks for the most desirable sports rights in the context of the explosive

Jay Scherer; David Whitson

2009-01-01

317

Nontraditional Games in a Foreign Environment.  

ERIC Educational Resources Information Center

A study investigated students' reactions to the addition of nontraditional games (played in and traditional to another country) to the physical education curriculum. Seventh grade students in Australia were introduced to game development, skills, and present status of two sports, 'Midget' Hockey, a modified version of Canadian ice hockey, and…

Cross, Thomas S.

318

2011-12 PROSPECTUS WESLEYAN MEN'S BASKETBALL  

E-print Network

..........Bob Chiapetta Equipment Room Attendant......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center ...............Joe Reilly W Basketball/Assoc. AD....Kate Mullen Men's Crew........................Phil Carney Women....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

319

2012 PROSPECTUS2012 PROSPECTUS WESLEYAN MEN'S LACROSSEWESLEYAN MEN'S LACROSSE  

E-print Network

......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black Intramural ...............Joe Reilly W Basketball/Assoc. AD....Kate Mullen Men's Crew........................Phil Carney Women....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

320

2012 PROSPECTUS2012 PROSPECTUS WESLEYAN VOLLEYBALLWESLEYAN VOLLEYBALL  

E-print Network

Manager/Asst. AD ...Erin Carey Assistant AD ........................Rachel Ludwig Fitness Center Director..................Joe Reilly W Basketball/Assoc. AD...........Kate Mullen Men's Crew..........................Phil Carney Women........................................Chris Potter/Jeff Gilarde Men's Ice Hockey................Chris Potter Women's Ice Hockey ..........Jodi Mc

Devoto, Stephen H.

321

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN MEN'S CREWWESLEYAN MEN'S CREW  

E-print Network

......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black Intramural ...............Joe Reilly W Basketball/Assoc. AD....Kate Mullen Men's Crew........................Phil Carney Women....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

322

2011-12 PROSPECTUS2011-12 PROSPECTUS WESLEYAN MEN'S TENNISWESLEYAN MEN'S TENNIS  

E-print Network

......Jason Helbig Facility Manager/Asst. AD ....Erin Carey Fitness Center Director......Drew Black Intramural ...............Joe Reilly W Basketball/Assoc. AD....Kate Mullen Men's Crew........................Phil Carney Women....................................Chris Potter/Jeff Gilarde Men's Ice Hockey..............Chris Potter Women's Ice Hockey.........Jodi Mc

Devoto, Stephen H.

323

The Tuck MBA Program The Tuck MBA Program  

E-print Network

and supportive, Tuck is a community unlike any other. A Message from the Dean #12;Everyone is goal-oriented and driven, whether it's in their career search, the classroom, or a new sport, like ice hockey, General Management Club, Marketing Club, Tuck Wine Society, Tripod Hockey, Reach the Beach Current

324

University Of Idaho Moscow, Idaho  

E-print Network

's Intramural Football Crown 40 INTRAMURAL FOOTBALL #12;INTRAMURAL FOOTBALL 41 #12;Field Hockey Interest Grows At Idaho 42 FIELD HOCKEY #12;Volleyball Finishes Season With 16-14 Record. VOLLEYBALL 43 #12;44 CROSS the overall goals and objectives of the University for the period 1975 to 1980. The plan. which was intended

O'Laughlin, Jay

325

Home | Register Web Search: Post Archives  

E-print Network

at the National Hockey League playoff game between the home-town Maple Leafs and the Ottawa Senators, it generated the kind of fist-in-the-air ovation usually reserved for goals scored in sudden-death. "I the punch line: "Canada is the second-largest land mass, the first nation of hockey and the best part

Richardson, Derek Charles

326

EU-Canada Mobility Program Experience Report By Cam Mazurek  

E-print Network

Our projected required us to convert a current 2-wheel differential drive hockey playing robot, and the hockey stick mechanism would ideally stay the same. After a couple weeks of familiarizing ourselves on this project. It was very satisfying to have completed the project goal of producing a working omnidirectional

Payandeh, Shahram

327

October 7, 2011 MBA All Star: Brian Donaldson  

E-print Network

practical. So Donaldson set a new goal for himself: to become commissioner of the National Hockey League a professional hockey player. And like many kids, he had to alter his dream to something a little more. Ordinarily such a goal would sound impractical at best and insane at worst, but he actually has a plan

Huang, Jianyu

328

Sport Clubs RECord Archery -Nov 6-8  

E-print Network

. National Competition Updates Club Spotlight--Ice Hockey Next Sport Clubs Meeting: February 1 @ 6:3o pm in Room 281 The Ice Hockey team has been growing over the past few years. The team currently consists with a record of 9-1. They are pushing towards their goal of making it to regional's, in order to do

329

WEATHER, p. 2 Volume 134, Number 46 Tuesday, October 14, 2014  

E-print Network

sunny WEd: 76°f | 61°f Partly cloudy THu: 72°f | 60°f Rain FIEld HOCkEy WINS MIT field hockey beats Wheaton by one goal sports, p. 11 WOmEN'S SOCCER vICTORy MIT wins with single overtime goal sports, p. 11

330

Math 1107 Project 1 Due Date: Start of Class on Wednesday, Sept. 21, 2011  

E-print Network

Gretzky's 92 goals in the '81-'82 NHL season; 3. Nolan Ryan's 7 career no-hitters in MLB; 4 than basketball, hockey or baseball. 60 points (15 points per athlete) Part 1: Analyzing each athlete to demonstrate the significance of the individual achievement. For example, you might go to http://www.hockey

DeMaio, Joe

331

NU Intramural Sports Broomball Rules  

E-print Network

to initiate play. The players take positions identical to hockey for the face-offs. 3. All ties at the end until a winner is declared. 4. Mercy Rule: All games with a 10-goal differential at any time in the 3rd (2) women, any of the four players may be the goalie. #12;6. All players must wear hockey helmets

Sridhar, Srinivas

332

2005 Nature Publishing Group Privacy Policy  

E-print Network

.1038/433800b Climate blog could score with newer hockey stick Sir ­ In your Editorial "Welcome climate bloggers by a posting by M. E. Mann on 4 December: "Temperature variations in past centuries and the so-called 'Hockey their attention to this. Your Editorial asserts that there is little reason to doubt that RealClimate's goal, "to

Huang, Shaopeng

333

DalhousieUniversity DepartmentofAthletics&RecreationalServices  

E-print Network

(soccer, cross country, track and field, swimming, basketball, volleyball and hockey) including over 300 banners. You can help the Tigers achieve these goals. As a member of Atlantic University Sport (AUS for Dalplex and Wickwire Field events and 1 event ticket for men's hockey) ·FAMILY $250 (includes 4 event

Brownstone, Rob

334

The Best of Both Worlds London offers the best of both worlds big  

E-print Network

's got game! The London Knights (hockey), the London Majors (baseball), and the London Lightning, while indoor and outdoor ice rinks are a popular choice for skaters and hockey players. In the summer ­ Friday (no program on July 1st) Welcome to Western University! Our goal for this unique Western program

Sinnamon, Gordon J.

335

DalhousieUniversity DepartmentofAthletics&RecreationalServices  

E-print Network

and hockey) with over 300 student-athletes, coaches, trainers and managers. You, as a member, become AUS and CIS championship banners. You can help the Tigers achieve these goals. As a member of Atlantic W Cross Country q M q W Hockey q M q W Soccer q M q W Swimming q M q W Track & Field q M q W

Brownstone, Rob

336

Research, faculty, student and community news, brought to you by the Faculty of Science. Allergy Project  

E-print Network

is intended to communicate the faculty's goals, strategic direction and activities in order to connect alumni he started playing hockey, a sport which led the father and Carleton University neuroscience son to hockey," said holahan, whose wife is a neuropsychologist at the children's hospital of eastern

Dawson, Jeff W.

337

Math 1107 Project 1 Due Date: Start of Class on Thursday, June 16, 2011  

E-print Network

the significance of the individual achievement. For example, you might go to http://www.hockey-reference.com/leaders/goals on March 2, 1962 in the NBA; 2. Wayne Gretzky's 92 goals in the '81-'82 NHL season; 3. Nolan Ryan's 7 sport- like activity) or game other than basketball, hockey or baseball. 60 points (15 points per

DeMaio, Joe

338

4 BOSTONIA WinterSpring 2011 COMMONWEALTH NEWS FROM BU AND BEYOND  

E-print Network

4 BOSTONIA Winter­Spring 2011 COMMONWEALTH NEWS FROM BU AND BEYOND Women's ice hockey coach Brian Hockey East title and an NCAA tourna- ment berth last year, Durocher (SED'78) skated into his sixth- can hearts in the 2010 Winter Olympics, in Vancouver. Poulin, in fact, scored both goals in the gold

Spence, Harlan Ernest

339

[Operational research applied to ranking systems and competition  

E-print Network

fr [Operational research applied to ranking systems and competition formats in field hockey] [Titre Thesis is dedicated to the application of Operations Research in the domain of field hockey. It proposes different sort of ranking systems: based on the goal average; with different weights attributed to a win

Libre de Bruxelles, Université

340

NU Intramural Sports 8v8 Full Ice Co-Rec Broomball Rules  

E-print Network

-off is used to initiate play. The players take positions identical to hockey for the face-offs. 3. All ties overtime periods until a winner is declared. 4. Mercy Rule: All games with a 7-goal differential at any to avoid a forfeit. #12;7. All players must wear hockey helmets AT ALL TIMES (including scrimmages after

Sridhar, Srinivas

341

Math 1107 Project 1 Due Date: Start of Class on Thursday, June 14, 2012  

E-print Network

. If this were my project, I would go to http://www.hockey- reference.com/leaders/goals_yearly.html and compute on March 2, 1962 in the NBA; 2. Wayne Gretzky's 92 goals in the '81-'82 NHL season; 3. Nolan Ryan's 7 sport- like activity) or game other than basketball, hockey or baseball. 60 points (15 points per

DeMaio, Joe

342

The BosTon College Chronicle may 7, 2009-vol. 17 no. 17  

E-print Network

-up that promises to have the cam- pus grounds in pristine condition for the May 18 Commencement showcase. "Our goal Honors Program and on the BC women's ice hockey team. What she didn't know was how impor- tant the latter out to her hockey teammates, who rallied around her and her faith, and in doing so taught her

Huang, Jianyu

343

Copyright 2005 Psychonomic Society, Inc. 1252 2005, ?? (?), ???-???  

E-print Network

various sources of in- formation in the external environment and the goals inter- nal to the observer & Kunde, 1999; Hughes & Zimba, 1985; Kinchla, 1977; Kingstone & Klein, 1991; Lambert & Hockey, 1986; Lambert & Hockey, 1986). Using a similar paradigm, but with objectlike global configurations, Hoffmann

Behrmann, Marlene

344

Math 10120 --Finite Mathematics Some Counting Problems --with solutions  

E-print Network

: 13 Ã? 48 (choose denomination for the four, then one other card) 3. Notre Dame Hockey: Notre dame hockey has a 26-man roster, of which exactly three are goaltenders. Each game day, Coach Jeff Jackson has, with the goal- tender announced last. 1 #12;How many options does he have in total? Solution: Lots of different

Galvin, David

345

M A G A Z I N E at theTsongas  

E-print Network

UMass M A G A Z I N E FALL 2007 VOLUME 10 NUMBER 3 Tsunami at theTsongas River Hawks' Hockey of you to help achieve our lofty goals in teaching, research and service. We begin this fiscal year.uml.edu/chancellor/) to ensure that we have a vigorous dialogue on campus. We had an extraordinary situation with our hockey team

Massachusetts at Lowell, University of

346

Leading the way, staying in touch, making the difference SEASON 11 TOGETHERFostering Inclusion in  

E-print Network

12 ® #12;2 | Spring 2012 INSIDE FEATURES 10 INCLUSION It's not a goal. It's a lifestyle. 16 HOCKEY HEROES A group of area hockey players achieved their share of success on the ice and in the office. 20 in metropolitan Detroit, UM-Dearborn believes in inclusion. In recent years, our goal of inclusion prompted us

Lu, Yi

347

The Dalhousie University Community Committee Meeting Lord Dalhousie Room  

E-print Network

students with the goal to expose the students the not-for-profit organizations in the city. The students to meet a fundraising goal is $1,800. C.) Trick or Eat Students from Eliza Ritchie participated in a Trick.) Charity Face-Off Hockey Game Tryouts have begun for the 5th Annual Residence Charity Face-Off Hockey Game

Brownstone, Rob

348

MICHIGAN TECHNOLOGICAL UNIVERSITY INTRAMURAL-RECREATIONAL SPORTS  

E-print Network

. The following pages contain figures on participation, goals and results for Fall Semester 2011. If you have any SEMESTER 2011 Total Participants - 2,457 Women - 446 Men - 2,011 Teams - 230 The Intramural ice hockey program (30 teams) is currently in round robin tournament play. Ice hockey figures will be included

349

Score a Facilities Hat Trick: Strategic Goals for Successful Hiring, Training, and Team Commitment  

ERIC Educational Resources Information Center

Granted, it might be a bit of a stretch to find comparable attributes between an ice hockey team and facilities management organizations. However, if you are open-minded to the possibility and begin to analyze each of these entities, you will find there are some distinct similarities. Ice hockey is a fast-paced and ever-changing game, much like a…

Loy, Darcy

2012-01-01

350

MIT Hillel Update 4 Adar II 5774  

E-print Network

by their trips. Immediately following Shabbat, on Saturday night, MIT's ice hockey team hosted the Israeli national ice hockey team in an exhibition game. Our Engineers played well and were heartily cheered, with the goal of engaging more Jews in Jewish life. I started hosting "Shabbatlucks" this year. About once

Jackson, Daniel

351

gents, physical and virtual entities that interact with their environment, are becoming increasingly prevalent. How-  

E-print Network

watching ice hockey! He noticed that many of the hockey play- ers had the habit of hanging around the goal problems, agents sequentially observe their state and execute actions. The goal is to maximize a real, a general learning framework where an agent acts in an environment to maximize a reward signal. The goals

Sukthankar, Gita Reese

352

My Budapest Exchange Trip by Andrew George Yathon Introduction  

E-print Network

provided me with some challenging and very applicable experience for a mechanical engineer. The main goal was to take the existing hockey playing robot model and modify it so that it could move holonomically the old hockey robot fully assembled, our new Omnirobot fully assembled, and the omniwheel that we

Payandeh, Shahram

353

With little more than a mathematical chance separating  

E-print Network

six inter-varsity codes (basketball, cricket, football, hockey, netball & rugby) should mimicSportCouncil #12;T Results from Sauturday's schedule of games against UJ in the annual hockey Derby Day series. of Technology (VUT) tomorrow night at the Bidvest Stadium @ 18h30 (women) and 20h30 (men). AIRBORNE: Goal

Wagner, Stephan

354

1Toward a Model of Student Education in Microworlds Cristina Conati Jill Fain Lehman  

E-print Network

the microworldAbstract experiences make their contribution. Thus, the goal of Microworlds are educational preliminary work is preliminary, demonstrating a problem-solving whose goal is to attain a better processes involved in learning from incorrect behavior. Hockey (hereafter, simply Hockey) (Chabay & Sherwood

Conati, Cristina

355

EUCanadaRomania Student Mobility Program Personal Experience By Egon Fernandes (Simon Fraser University)  

E-print Network

my next four months of my student exchange experience working on the Mobile Robot Hockey System supposed to play a simple game of hockey. The premise of the task may seem simple;worked independently for the most part but towards the same goal. I was given the role of coding

Payandeh, Shahram

356

Proposed Renovations for Lansing Chapman Rink Energy Efficiency Improvements  

E-print Network

hockey teams. While the rink's biggest aesthetic appeal is its classic voluminous design of Williams College campus since 1961, serving as home ice for the men's and women's Varsity hockey teams efficiency and ultimately saving the College thousands of dollars annually. Williams College's goal to reduce

Aalberts, Daniel P.

357

QUARTERFINALS THURS., MARCH 1  

E-print Network

, and her .521 field goal percentage at midyear was third in the conference. RACHEL KOTULA Kotula won her-Tournament honors. THE BIG DOUBLEHEADER: APRIL 29 VS. CENT. CONN. ST. MEN'S HOCKEY Next year RMU hosts the NCAA Hockey quarterfinal on their Neville Island ice, with the winner heading to Rochester, N.Y., to play

VanDieren, Monica

358

Chip Knight Professors Art and Dethier  

E-print Network

and LEED Certification Introduction The home of the Williams College Football, Track, Field Hockey an aggressive greenhouse gas emissions goal of 10% below the school's 1990-1991 levels by the year 2020 the site in 2004 to make room for the Renzie Lamb synthetic turf lacrosse and field hockey facility (see

Aalberts, Daniel P.

359

u n i v e r s i t y o f v e r m o n t many offer inter-collegiate competition  

E-print Network

Aikido Alpine Skiing Badminton Baseball Basketball (men's and women's) Brazilian Jiu Jitsu Catamount's Jen Johnson, (802) 656-7709 jennifer.johnson@uvm.edu Skiing, Alpine ­ men's & women's Bill Reichelt Hockey Figure Skating Football Freestyle Ski Golf Gymnastics Hoop Dancing Ice Hockey (men's and women

Hayden, Nancy J.

360

The use of Video Game Technology for Investigating Perceptual and Cognitive Awareness in Sports  

Microsoft Academic Search

This paper describes a framework for investigating and manipulating the attentional components of video game play in order to affect learning transfer across different task environments. Several groups of video game players (VGP) and non video game players - both hockey and non-hockey groups (NVGPH, NVGP) will be tested at baseline on several aspects of visual processing skill. The NVGP

Desmond E. Mulligan; Michael W. Dobson; Janet Mccracken

2005-01-01

361

TABLE OF CONTENTS I. Introduction 2-3  

E-print Network

Management 6-9 A. Requirements B. AED procedures C. Emergency Action Plan V. Planning 9 A. Travel B varsity teams and then changed to club status · Long history of well-run club organization and leadership Sports · Men's Hockey · Women's Hockey · Men's Rugby · Women's Rugby Team Sports are housed under

Yener, Aylin

362

Holiday Hotlist 2014 Cornell Public Service Center  

E-print Network

.255.1148 · cupsc@cornell.edu · www.psc.cornell.edu This list is updated weekly on Wednesdays- please checkHoliday Hotlist 2014 Cornell Public Service Center 100/200 Barnes Hall · Cornell University 607 Drive at Cornell Men's Hockey Coach Mike Shafer and the Cornell Men's Hockey

Rodriguez, Carlos

363

Deep drawing of uranium metal  

SciTech Connect

A procedure was developed to fabricate uranium forming blanks with high ''draw-ability'' so that cup shapes could be easily and uniformly deep drawn. The overall procedure involved a posttreatment to develop optimum mechanical and structural properties in the deep-drawn cups. The fabrication sequence is casting high-purity logs, pucking cast logs, cross-rolling pucks to forming blanks, annealing and outgassing forming blanks, cold deep drawing to hemispherical shapes, and stress relieving, outgassing, and annealing deep-drawn parts to restore ductility and impart dimensional stability. The fabrication development and the resulting fabrication procedure are discussed in detail. The mechanical properties and microstructural properties are discussed.

Jackson, R J; Lundberg, M R

1987-01-19

364

Shock sensitivity of IHE at elevated temperatures  

SciTech Connect

Insensitive high explosives (IHE`s) based on triamino-trinitrobenzene (TATB) have been demonstrated to be very insensitive to shock, thermal, friction and other stimuli. Hazard scenarios can involve more than one stimulus, such as heating followed by fragment impact (shock). The shock sensitivity of the IHE`s LX-17 and PBX-9502 preheated to a temperature (250{degree}C) just below thermal runaway is quantitatively studied using embedded manganin pressure gauges. The thermal expansion of TATB to 250{degree}C is measured to determine the state of the explosive prior to shock initiation. LX-17 and PBX-9502 are found to be significantly more sensitive at 250{degree}C than at lower temperatures, but still less sensitive than ambient temperature HMX-based explosives. An ignition and growth reactive flow computer model of the shock initiation of hot IHE is developed to allow predictions of the response of hot IHE to impact scenarios which can not be tested directly.

Urtiew, P.A.; Cook, T.M.; Maienschein, J.L.; Tarver, C.M.

1993-06-01

365

Probabilistic Threshold Criterion  

SciTech Connect

The Probabilistic Shock Threshold Criterion (PSTC) Project at LLNL develops phenomenological criteria for estimating safety or performance margin on high explosive (HE) initiation in the shock initiation regime, creating tools for safety assessment and design of initiation systems and HE trains in general. Until recently, there has been little foundation for probabilistic assessment of HE initiation scenarios. This work attempts to use probabilistic information that is available from both historic and ongoing tests to develop a basis for such assessment. Current PSTC approaches start with the functional form of the James Initiation Criterion as a backbone, and generalize to include varying areas of initiation and provide a probabilistic response based on test data for 1.8 g/cc (Ultrafine) 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) and LX-17 (92.5% TATB, 7.5% Kel-F 800 binder). Application of the PSTC methodology is presented investigating the safety and performance of a flying plate detonator and the margin of an Ultrafine TATB booster initiating LX-17.

Gresshoff, M; Hrousis, C A

2010-03-09

366

Apparatus for Teaching Physics.  

ERIC Educational Resources Information Center

Summarizes the advantages in using the Daedalon Air Table, which supplies compressed air to the pucks instead of the table surface itself. Describes methods for constructing an electronic null detector using a Weston type galvanometer and an integrated circuit operational amplifier. Also describes a redesigned and improved sound-level meter. (CS)

Gottlieb, Herbert H., Ed.

1980-01-01

367

Discrepant Results in a 2-D Marble Collision  

ERIC Educational Resources Information Center

Video analysis of 2-D collisions is an excellent way to investigate conservation of linear momentum. The often-desired experimental design goal is to minimize the momentum loss in order to demonstrate the conservation law. An air table with colliding pucks is an ideal medium for this experiment, but such equipment is beyond the budget of many…

Kalajian, Peter

2013-01-01

368

ILD 6 Name: ____________________ Tutorial section _______ Rolling & kinetic energy  

E-print Network

of Maryland Physics Education Research Group, Fall 2002. 1 I. Kinetic energy clarified This section clarifies. Discussion. B. (Work together) On the pond, two identical pucks move across the ice at the same speed at the bottom. A. (Work alone) What's your initial guess about which object has more speed at the bottom

Maryland at College Park, University of

369

The HAPTICTOUCH Toolkit: Enabling Exploration of Haptic Interactions  

E-print Network

-it-yourself fashion. The problem is that programming the HTP (and haptics in general) is difficult. To address called the Haptic Tabletop Puck (or HTP) [14]. It uses inexpensive do-it-yourself (DIY) hardware and low downloadable toolkit that simplifies haptic programming on a DIY platform (the HTP platform); a series

Greenberg, Saul

370

Shakespeare  

NSDL National Science Digital Library

Helping students to see that themes repeat themselves throughout time allows them to see inside their own hearts more clearly. Use these sites to learn more about William Shakespeare and his time. Shakespeare for Kids Queen Elizabeth Puck s Place You can add your own sonnets or pictures Go inside the Globe Theatre ...

Steele, Karen

2007-01-16

371

PP HH YY SS II CC AA LL PP RR OO PP EE RR TT YY MM EE AA SS UU RR EE MM EE NN TT SS YY SS TT EE MM Q u a n t u m D e s i g n  

E-print Network

PP HH YY SS II CC AA LL PP RR OO PP EE RR TT YY MM EE AA SS UU RR EE MM EE NN TT SS YY SS TT EE MM Sample puck "Keyed" bottom connector SS YY SS TT EE MM FF EE AA TT UU RR EE SS 1 Much of the versatility

Liu, J. Ping

372

A Preponderance of Elastic Properties of Alpha Plutonium Measured Via Resonant Ultrasound Spectroscopy  

SciTech Connect

Samples of {alpha} plutonium were fabricated at the Los Alamos National Laboratory's Plutonium Facility. Cylindrical samples were machined from cast pucks. Precision immersion density and resonant ultrasound spectroscopy (RUS) measurements were completed on 27 new samples, yielding elastic moduli measurements. Mechanical tests were performed in compression yielding stress-strain curves as a function of rate, temperature and phase.

Saleh, Tarik A. [Los Alamos National Laboratory; Farrow, Adam M. [Los Alamos National Laboratory; Freibert, Franz J. [Los Alamos National Laboratory

2012-06-06

373

Designing Interfaces for Robot Control Based on Semiotic Engineering Luis Felipe Hussin Bento, Raquel Oliveira Prates, Luiz Chaimowicz  

E-print Network

Designing Interfaces for Robot Control Based on Semiotic Engineering Lu´is Felipe Hussin Bento--This paper explores the use of Semiotic Engineering theory in the design of different interfaces of diverse interaction technologies. Keywords-human-robot interaction, semiotic engineering, e- puck

Chaimowicz, Luiz

374

Plutonium Immobilization Can Loading Preliminary Specifications  

SciTech Connect

This report discusses the Plutonium Immobilization can loading preliminary equipment specifications and includes a process block diagram, process description, equipment list, preliminary equipment specifications, plan and elevation sketches, and some commercial catalogs. This report identifies loading pucks into cans and backfilling cans with helium as the top priority can loading development areas.

Kriikku, E.

1998-11-25

375

PLUTONIUM RECYCLE PROGRAM ANNUAL REPORT, FISCAL YEAR 1961  

Microsoft Academic Search

7 6 4 9 ; : 9 7 8 5 9 6 3 7B 8 8 5 ; 8 5 9 ; ? : < 6 A 8 tinued on updating, revising, and ; debugging the RBU, MELEAGER, PUCK, and LOLA codes. Three new codes, PROTEUS, ; PUVE, and QUICK, were developed to assist analytical studies. The PROTEUS code, ;

S. ed

1961-01-01

376

Flat Polishing for TEM sample preparation Things you will need to buy or borrow  

E-print Network

with sample Thickness adjustment knob #12;4 Mounting the sample 6. Crystal bond wax melts nicely at 150C, so flake of wax on it. Let the wax melt, then push your sample into it. Use just a small flake of wax. You don't want wax all over the holder. 7. Place the sample holder into the polishing puck, and retract

Devoret, Michel H.

377

Techniques for Teachers Section  

ERIC Educational Resources Information Center

Includes a simple technique to demonstrate Millikan's oil drop experiment, an environmental studies experiment to measure dissolved oxygen in water samples, and a technique to demonstrate action-reaction. Science materials described are the Pol-A-Star Tomiscope, Nuffield chemistry film loops, air pucks and pH meters. (JR)

Tait, A., Ed.

1973-01-01

378

The Rat's Life benchmark: competing cognitive robots  

Microsoft Academic Search

This paper describes Rat's Life: a complete cognitive robotics benchmark that was carefully designed to be easily reproducible in a research lab with limited resources. It relies on two e-puck robots, some LEGO bricks and the Webots robot simulation software. This benchmark is a survival game where two robots compete against each other for resources in an unknown maze. Like

Olivier Michel; Fabien Rohrer

2008-01-01

379

Metropolitan Council Regional Development  

E-print Network

to where the puck will be, not where it is · We know some things about changing technologies. NoneMetropolitan Council Regional Development Framework: Some Thoughts David Levinson University. These things include jobs, friends, mates, security, supplies, and so on. If you do not wish to reach

Levinson, David M.

380

Ice Skating Instruction at the University of Illinois.  

ERIC Educational Resources Information Center

The University of Illinois at Urbana-Champaign conducts a instructional ice skating program for its students and the community. Activities include: a figure skating club; a speed skating club; ice hockey program; and ice skating classes. (CJ)

Christensen, Char; And Others

1981-01-01

381

Concussion - adults - discharge  

MedlinePLUS

... Allowing rest times during the day Having extra time to complete projects A doctor should tell you when you can: Do heavy labor or operate machines Play contact sports, such as football, hockey, and ...

382

M A G A Z I N E SPRING 2009 VOLUME 12 NUMBER 1  

E-print Network

at River Hawk hockey games has broken attendance records this year and the percentage of students living been meeting to identify strategic goals. An external advisory board, made up of alumni, is helping

Massachusetts at Lowell, University of

383

College/University: 2000-2005 University of Applied Sciences Hamburg  

E-print Network

. Scientific Interests and Goals: My main field of interest is development ofthe vascular system. I want to the development of new therapies for vascular diseases in humans. Hobbies and other interests: Hockey, Fitness

Manstein, Dietmar J.

384

The Biologist NKU Department of Biological Sciences News  

E-print Network

on Occupations, Recruiting, Role mod- els, Community, and Engagement, and the goals are very ambitious. Project aspects of avian reproductive behavior. Lindsey enjoys football and hockey, and always wears her lucky

Boyce, Richard L.

385

Steady Advances Against Cystic Fibrosis | NIH MedlinePlus the Magazine  

MedlinePLUS

... playing everything from football and lacrosse to ice hockey and golf. And his family's foundation has become ... be," says Gunnar. "That has been my main goal." From 1985 to 2005, predicted survival of people ...

386

UNIVERSITY RESIDENCES begins here.  

E-print Network

-screen TVs; ping-pong, pool, and air hockey tables; arcade games; and numerous recreation, study, and group that will help you explore your interests, dreams, and career goals. For more information, visit www

Fernández-Juricic, Esteban

387

University of Minnesota Intramural 5v5 Broomball Rules  

E-print Network

to score more goals than your opponents during the specified game time. B. Playing area: Play will take be kept on the helmet provided. ALL HELMETS MUST HAVE CAGES! 4. Protective Equipment: Hockey gloves, pads

Amin, S. Massoud

388

Learning From Observation and From Practice Using Behavioral Primitives  

E-print Network

a memory-based approach to learning how to select and provide sub- goals for behavioral primitives, given on a marble maze task, Labyrinth. We have also explored an air hockey task, but present that work in other

Bentivegna, Darrin

389

Dear University of Rochester Families, Welcome to the 200910 school year. Almost 1,100 students arrived for Orientation  

E-print Network

. Women's cross coun- try has two athletes back who ran in the national championship meet. Field hockey scored 49 goals in 20 matches last year and returns seven of its top eight scorers. Men's cross country

Mahon, Bradford Z.

390

Semantic Lexicons and sloWNet  

E-print Network

.000 hrs or 1.000 days goals: faster easier cheaper recyclable #12;WordNet #12;Serbian wordnet: konac, kraj in the network #12;Encyclopedic Approach - Example English wordnet: ice hockey Wnglish Wikipedia: Slovene

Erjavec, TomaÂ?

391

0% 10% 20% 30% 40% 50% 60% Internet (9)  

E-print Network

- - Graduate School/Full-Time 7 4.5% TOTAL 164 100% *Position Related to Career Goals - 94% Placement MA Odessa Jackalopes Hockey Director/Broadcasting, Media & PR Odessa TX Turner/Time Warner, CNN News

Doyle, Robert

392

The Asian American community is diverse and comprised of many unique histories, ethnicities, languages, and cultures. There is not one Asian American narrative, counter  

E-print Network

's ice hockey player · Jeremy Lin, NBA player · Ken Jeong: Actor in TV show Community · George Takei from, but also clearly and assertively communicate your hopes, dreams, and career goals. · "I'd like

Illinois at Chicago, University of

393

Aggression in Sport: Its Implications for Character Building.  

ERIC Educational Resources Information Center

The premise that "sports builds character" is scrutinized through a discussion of several contact sports--boxing, hockey, and football. The fine line between assertiveness and aggression is explored, and the interrelationship between society and sports is investigated. (JN)

VanDyke, Roger R.

1980-01-01

394

Injuries to the Head We have all heard of athletes, particularly  

E-print Network

72 #12;73 Injuries to the Head We have all heard of athletes, particularly hockey and football and with micrometer spatial resolution. Our goals are to reveal the mechanisms underlying these brain dis- eases

Schaffer, Chris B.

395

COGS 300 Notes January 21, 2014 Today's "Fun" Example: Rotating Mask  

E-print Network

" (Original) credit: http://www.kyb.tuebingen.mpg.de/ As a quick follow up to the hockey video analysis ­ strong social animal hypothesis This Week's Learning Goals 1. To share the "big picture" story

Woodham, Robert J.

396

0% 10% 20% 30% Employment Agency (4)  

E-print Network

% *Position Related to Career Goals - 89% Placement Information When Position Obtained #12;Employment Detail Global Spectrum Event Manager Bangor ME National Hockey League Account Executive New York NY NFL Network

Doyle, Robert

397

Remote Augmented Reality for Multiple Players Over Daniel C. M. Leung, Pak Shing Au, Irwin King, and Edward H. H. Yau  

E-print Network

them. The design goals of the Tele-Table are real-time and realistic user experience. The features of games such as board games (Chinese chess), card games (UNO) or inter- active games (air hockey) using

King, Kuo Chin Irwin

398

EPICORE 2013 Annual Report EPICORE SCORes! -Supporting Clinical and Outcomes Research  

E-print Network

that I present to you our 2013 annual report. By now you will have noted the references to hockey in our report - indeed, ours is a team sport, with each member contributing to the goals that we score. 2013

MacMillan, Andrew

399

Merci monsieur le Doyen Lagu, pour l'introduction. Madame la chancelire, monsieur le recteur, parents, amis et distingus invits, bonsoir.  

E-print Network

relationships with your family and friends, or even your floor hockey team's performance, or your race time pursue goals you're passionate about, and can persevere for. Those are the success stories I want to hear

Petriu, Emil M.

400

University of Minnesota Intramural 8v8 Broomball Rules  

E-print Network

to score more goals than your opponents during the specified game time. B. Playing area: Play will take provided. ALL HELMETS MUST HAVE CAGES! 4. Protective Equipment: Hockey gloves, pads, etc. are permitted

Blanchette, Robert A.

401

WSU Tri-Cities is fully accredited, with small classes and real-life connections  

E-print Network

pursuing those life-long goals and dreams, it's an investment in life. You must be willing to commit hockey games, or just hanging out in the student lounge. Belong. Be a leader by joining the Associated

Collins, Gary S.

402

Final Report of the Virginia 2020 Strategic Planning Task Force for the Department of Athletics  

E-print Network

; compliance; and finances and fundraising. This report identifies the group's recommended goals, budgetary, men's and women's soccer, field hockey, rowing, and men's and women's swimming. ! Third-tier sports

Acton, Scott

403

Copyright 2005 by the Consortium for Computing Sciences in Colleges. Permission to copy without fee all or part of this material is granted provided that the copies are not made or  

E-print Network

include aesthetically graded figure skating, a timed biathlon, and a head-to-head hockey competition. From) at an appropriate level for CS1 students. Starting with a clean slate, we devised RoboGames. Our primary goals

Harcourt, Ed

404

Calculation and Visualization of Range of Motion of Hip Joint from MRI  

E-print Network

trained. These goals are achieved by presenting three dimensional (3D) visualizations of motions envelopes, sporting activities that require repetitive and extreme movements (e.g. dancers, gymnasts and hockey

Lee, WonSook

405

Honors... the nextlevel Dr. Jeffrey Buller, Dean  

E-print Network

students with course selection; it also includes mentoring them as they develop their goals for college; it is where you will go to find out about what is happening on campus. You will find billiards, air hockey

Fernandez, Eduardo

406

The influence of birth date and place of development on youth sport participation.  

PubMed

Previous research highlights the critical role that contextual factors play in shaping athlete development. The purpose of the present study was to investigate two of these contextual factors: birth date (known as the relative age effect, RAE) and city of development as determinants of participation in a sample of youth ice hockey players. The sample included 146,424 athletes registered with Ontario youth ice hockey between the 2004 and 2010 seasons. Chi-square statistics determined a significant RAE in youth ice hockey. Findings also revealed a significant association between small cities of development and increased youth ice hockey participation. Finally, there was no evidence of an interaction between relative age and city of development. The characteristics of smaller communities that may facilitate sport participation across all youth are discussed, along with recommendations for future research. PMID:22998526

Turnnidge, J; Hancock, D J; Côté, J

2014-04-01

407

6/26/09 11:38 PMThat Shot Was Out? A Clue on When to Challenge a Call -NYTimes.com Page 1 of 3http://www.nytimes.com/2009/06/24/sports/tennis/24tennis.html?ref=sports  

E-print Network

Wastes Too Fast 2. Well: Can You Get Fit in Six Minutes a Week? 3. Pastor Urges His Flock to Bring Guns COLLEGE FOOTBALL PRO BASKETBALL COLLEGE BASKETBALL HOCKEY SOCCER GOLF TENNIS GLOBAL SPORTS BUY TICKETS

Whitney, David

408

Club Sport Director -Maureen Michaud 994-6313 maureen.michaud@montana.edu Sport President Contact Info  

E-print Network

Info Alpine Skiing Jackson Coyle jacksonscoyle@yahoo.com Bobcat Hockey Club of MSU Jeff Quay Will Boekel runningclubmsu@gmail.com Ski Club of MSU Nevin Leh alpine.montana@gmail.com Taekwando Club Clay

Maxwell, Bruce D.

409

New Names for New Games  

ERIC Educational Resources Information Center

A collection of the following original games, adapted from traditional sports: frisbee baseball, rollerboard hockey, bell ball, throw and go netball, boardless basketball, crosseball, flag football, french dodgeball, korfbal, german bat ball, and flag football. (AP)

Foster, Jerry; and others

1969-01-01

410

34 CFR 106.41 - Athletics.  

Code of Federal Regulations, 2012 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-07-01

411

15 CFR 8a.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-01-01

412

24 CFR 3.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-04-01

413

Sports Safety: Avoiding Tooth and Mouth Injuries  

MedlinePLUS

... protect yourself. The use of mouth guards among football players, for example, is believed to prevent about ... activities that involve speed or impact. These include football, hockey, skating and bike riding. The helmet should ...

414

45 CFR 618.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-10-01

415

22 CFR 146.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-04-01

416

36 CFR 1211.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-07-01

417

29 CFR 36.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-07-01

418

32 CFR 196.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-07-01

419

24 CFR 3.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-04-01

420

38 CFR 23.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-07-01

421

24 CFR 3.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-04-01

422

36 CFR 1211.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-07-01

423

10 CFR 5.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-01-01

424

29 CFR 36.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-07-01

425

34 CFR 106.41 - Athletics.  

Code of Federal Regulations, 2013 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-07-01

426

41 CFR 101-4.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-07-01

427

29 CFR 36.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-07-01

428

41 CFR 101-4.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-07-01

429

32 CFR 196.415 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2010-07-01

430

14 CFR 1253.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-01-01

431

10 CFR 5.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-01-01

432

43 CFR 41.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-10-01

433

40 CFR 5.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-07-01

434

Sports and Exercise Safety  

MedlinePLUS

... risk of injury almost as much as playing football without shoulder pads? Using the wrong — or improperly ... helmets : They're important for sports such as football, hockey, baseball, softball, biking, skateboarding, inline skating, skiing, ...

435

49 CFR 25.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-10-01

436

6 CFR 17.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-01-01

437

13 CFR 113.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-01-01

438

7 CFR 15a.34 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball and other sports, the purpose or major activity of which involves bodily contact. (d) Where use of a...

2014-01-01

439

45 CFR 86.41 - Athletics.  

Code of Federal Regulations, 2010 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball and other sports the purpose of major activity of which involves bodily contact. (c) Equal...

2010-10-01

440

7 CFR 15a.34 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball and other sports, the purpose or major activity of which involves bodily contact. (d) Where use of a...

2010-01-01

441

28 CFR 54.415 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2010-07-01

442

40 CFR 5.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-07-01

443

6 CFR 17.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-01-01

444

What Are Knee Problems?  

MedlinePLUS

... impact, such as in an automobile accident or football tackle. The medial and lateral collateral ligaments are ... These blows frequently occur in sports such as football or hockey. Ligament injuries are treated with: Ice ...

445

28 CFR 54.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-07-01

446

45 CFR 86.41 - Athletics.  

Code of Federal Regulations, 2011 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball and other sports the purpose of major activity of which involves bodily contact. (c) Equal...

2011-10-01

447

43 CFR 41.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-10-01

448

22 CFR 146.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-04-01

449

10 CFR 5.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-01-01

450

7 CFR 15a.41 - Athletics.  

Code of Federal Regulations, 2011 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-01-01

451

24 CFR 3.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-04-01

452

22 CFR 146.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-04-01

453

45 CFR 86.34 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball and other sports the purpose or major activity of which involves bodily contact. (d) Where use of a...

2014-10-01

454

Concussions  

MedlinePLUS

... a sports injury. High-contact sports such as football, boxing, and hockey pose a higher risk of ... a Head Injury Dealing With Falls Safety Tips: Football Bike Safety Safety Tips: Skateboarding Sports and Exercise ...

455

44 CFR 19.415 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2010-10-01

456

31 CFR 28.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-07-01

457

29 CFR 36.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-07-01

458

14 CFR 1253.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-01-01

459

14 CFR 1253.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-01-01

460

22 CFR 229.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-04-01

461

22 CFR 146.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-04-01

462

43 CFR 41.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-10-01

463

43 CFR 41.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-10-01

464

41 CFR 101-4.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-07-01

465

18 CFR 1317.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-04-01

466

28 CFR 54.415 - Access to course offerings.  

Code of Federal Regulations, 2011 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2011-07-01

467

7 CFR 15a.41 - Athletics.  

Code of Federal Regulations, 2010 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-01-01

468

38 CFR 23.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-07-01

469

6 CFR 17.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-01-01

470

28 CFR 54.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-07-01

471

49 CFR 25.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-10-01

472

22 CFR 229.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-04-01

473

43 CFR 41.415 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2010-10-01

474

34 CFR 106.34 - Access to classes and schools.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (2) Ability grouping...

2012-07-01

475

45 CFR 2555.415 - Access to course offerings.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2010-10-01

476

22 CFR 229.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-04-01

477

31 CFR 28.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-07-01

478

7 CFR 15a.41 - Athletics.  

Code of Federal Regulations, 2012 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-01-01

479

31 CFR 28.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-07-01

480

14 CFR 1253.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-01-01

481

44 CFR 19.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-10-01

482

28 CFR 54.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-07-01

483

18 CFR 1317.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-04-01

484

34 CFR 106.41 - Athletics.  

Code of Federal Regulations, 2011 CFR

...involved is a contact sport. For the purposes of this part, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-07-01

485

10 CFR 1042.415 - Access to course offerings.  

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2014-01-01

486

36 CFR 1211.450 - Athletics.  

Code of Federal Regulations, 2012 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2012-07-01

487

32 CFR 196.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-07-01

488

34 CFR 106.34 - Access to classes and schools.  

Code of Federal Regulations, 2010 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (2) Ability grouping...

2010-07-01

489

10 CFR 1042.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-01-01

490

45 CFR 618.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-10-01

491

45 CFR 618.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-10-01

492

6 CFR 17.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-01-01

493

41 CFR 101-4.415 - Access to course offerings.  

Code of Federal Regulations, 2012 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2012-07-01

494

24 CFR 3.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-04-01

495

45 CFR 618.450 - Athletics.  

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2014-10-01

496

43 CFR 41.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-10-01

497

49 CFR 25.450 - Athletics.  

Code of Federal Regulations, 2013 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2013-10-01

498

31 CFR 28.415 - Access to course offerings.  

Code of Federal Regulations, 2013 CFR

...students by sex within physical education classes or activities during participation in wrestling, boxing, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (4) Where use of a...

2013-07-01

499

13 CFR 113.450 - Athletics.  

Code of Federal Regulations, 2011 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2011-01-01

500

24 CFR 3.450 - Athletics.  

Code of Federal Regulations, 2010 CFR

...contact sport. For the purposes of these Title IX regulations, contact sports include boxing, wrestling, rugby, ice hockey, football, basketball, and other sports the purpose or major activity of which involves bodily contact. (c) Equal...

2010-04-01