Relevant bibliographies by topics / Jump

Academic literature on the topic 'Jump'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 April 2023

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Journal articles on the topic "Jump"

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Ercan Köse, Damla, Tolga Akşit, Osman Açıkgöz, and Gamze Ceyhan. "TIME COURSE OF CHANGES IN STRADDLE JUMP AND VERTICAL JUMP PERFORMANCE AFTER ACUTE STATIC STRETCHING IN ARTISTIC GYMNASTS." Science of Gymnastics Journal 15, no. 1 (February 24, 2023): 75–85. http://dx.doi.org/10.52165/sgj.15.1.75-85.

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The aim of the present study was to examine the time course of changes of the effects of static stretching on straddle jump, vertical jump height and flexibility after performing dynamic movements in artistic gymnasts. The study was participated by 14 female artistic gymnasts aged between 9 and 14. Vertical jump heights were measured using the New Test 2000 testing device. Flexibility measurement was performed with sit and reach flexibility test. Artistic gymnastics-specific jump movement was evaluated looking at the angle between lower extremities using the Dartfish motion analysis program. Baseline measurements taken before the standard warm-up and the measurements taken after static stretching were assessed. Four sets of gymnastics moves each lasting two minutes were performed. The tests were repeated after each set. Static stretching was found to affect vertical jump performance significantly. Significant differences were found between Jump2 and Jump1 (p=0.01), Jump2 and Jump3 (p=0.03), Jump2 and Jump4 (p=0.01), Jump2 and Jumop5 (p=0.004), and Jump2 and Jump6 (p=0.009). In flexibility-related changes, significant differences were found between Reach2 and Reach3 (p=0.03), and Reach2 and Reach6 (p=0.006). Static stretching was found to have no significant effect on the lower extremity straddle jump degree. In conclusion, although the static stretching protocol reduced vertical jump performance significantly, it did not affect the artistic gymnastics-specific jump move. The negative effects of static stretching on jump height approached the baseline value approximately 4 minutes later.
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Vieira, Amilton, Gabriela L. Ribeiro, Victor Macedo, Valdinar de Araújo Rocha Junior, Roberto de Souza Baptista, Carlos Gonçalves, Rafael Cunha, and James Tufano. "Evidence of validity and reliability of Jumpo 2 and MyJump 2 for estimating vertical jump variables." PeerJ 11 (January 25, 2023): e14558. http://dx.doi.org/10.7717/peerj.14558.

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Background We investigated the concurrent validity and test-retest reliability of the Jumpo 2 and MyJump 2 apps for estimating jump height, and the mean values of force, velocity, and power produced during countermovement (CMJ) and squat jumps (SJ). Methods Physically active university aged men (n = 10, 20 ± 3 years, 176 ± 6 cm, 68 ± 9 kg) jumped on a force plate (i.e., criterion) while being recorded by a smartphone slow-motion camera. The videos were analyzed using Jumpo 2 and MyJump 2 using a Samsung Galaxy S7 powered by the Android system. Validity and reliability were determined by regression analysis, typical error of estimates and measurements, and intraclass correlation coefficients. Results Both apps provided a reliable estimate of jump height and the mean values of force, velocity, and power. Furthermore, estimates of jump height for CMJ and SJ and the mean force of the CMJ were valid. However, the apps presented impractical or poor validity correlations for velocity and power. Compared with criterion, the apps underestimated the velocity of the CMJ. Conclusions Therefore, Jumpo 2 and MyJump 2 both provide a valid measure of jump height, but the remaining variables provided by these apps must be viewed with caution since the validity of force depends on jump type, while velocity (and as consequence power) could not be well estimated from the apps.
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Shu, Yang, Dong Sun, Qiu Li Hu, Yan Zhang, Jian She Li, and Yao Dong Gu. "Lower Limb Kinetics and Kinematics during Two Different Jumping Methods." Journal of Biomimetics, Biomaterials and Biomedical Engineering 22 (March 2015): 29–35. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.22.29.

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The purpose of the study is to investigate into the dynamic and kinematic parameters of lower limbs about two types of jump high-level basketball athlete doing: countermovement jump and squat jump. There were distinctively different in jump height between two types. Kinetics and kinematics parameters of squat jump were less than countermovement jump. Using Vertical Jumps countermovement jump can increase the height of vertical jump effectively. These jumps all can cushion the pressure of impact force in landing phase.
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Ju, Yong-In, Hak-Jin Choi, and Teruki Sone. "Effects of Korean red ginseng on three-dimensional trabecular bone microarchitecture and strength in growing rats: Comparison with changes due to jump exercise." PLOS ONE 17, no. 5 (May 5, 2022): e0267466. http://dx.doi.org/10.1371/journal.pone.0267466.

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Objectives The preventive effects of Korean red ginseng (KRG) on bone loss and microarchitectural deterioration have been extensively studied in animal models. However, few results have been reported for the effects of KRG on the trabecular microarchitecture as compared to changes resulting from physiological stimuli such as exercise load. We compared the effects of KRG and jump exercise on improvements in trabecular microarchitecture and strength of the distal femoral metaphysis in rats. Methods and materials Eleven-week-old male Wistar rats were divided into sedentary (CON), KRG-administered (KRG), and jump-exercised (JUM) groups. Rats were orally administered KRG extract (200 mg/kg body weight/day) once a day for 6 weeks. The jump exercise protocol comprised 10 jumps/day, 5 days/week at a jump height of 40 cm. We used microcomputed tomography to assess the microarchitecture, volumetric bone mineral density (vBMD), and fracture load as predicted by finite element analysis at the right distal femoral metaphysis. The left femur was used for the quantitative bone histomorphometry measurements. Results Although KRG produced significantly higher trabecular bone volume (BV/TV) than CON, BV/TV was even higher in JUM than in KRG, and differences in vBMD and fracture load were only significant between JUM and CON. In terms of trabecular microarchitecture, KRG increased trabecular number and connectivity, whereas the JUM group showed increased trabecular thickness. Bone resorption showed significant decrease by JUM and KRG group. In contrast, bone formation showed significant increase by JUM group. Conclusions These data show that KRG has weak but significant positive effects on bone mass and suggest that the effects on trabecular microarchitecture differ from those of jump exercise. The effects of combined KRG and jump exercise on trabecular bone mass and strength should be investigated.
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You, Chieh-Hsin, and Chi-Huang Huang. "Effects of Leg Stiffness Regulated by Different Landing Styles on Vertical Drop Jump Performance." Journal of Human Kinetics 83, no. 1 (August 23, 2022): 29–37. http://dx.doi.org/10.2478/hukin-2022-0066.

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Abstract The purpose of this study was to investigate the effects of stiffness regulated by landing styles on drop jump performance. Twenty-four male lacrosse athletes performed drop jumps with stiff (ST), self-selected (SS), and soft (SF) landing from a 0.42 m box. Leg stiffness, ground contact time, depth, jump height, maximum ground reaction force (GRF), GRF at the start of the propulsive phase, mean power, peak power, and the reactive strength index (RSI) were calculated. The results showed that jump height and the RSI had strong correlations to power production in all drop jump styles. Power would be a key factor to overall athletic performance. Repeated measures ANOVA showed significant differences (p < 0.05) in all variables among the three styles. Drop jumps with SS landing had comparable jump height to drop jumps with SF landing and power output to drop jumps with ST landing. Drop jumps with ST landing had significantly lower jump height, but higher GRF, power, and the RSI compared to drop jumps with SF landing. In drop jump testing, drop jumps with SS landing should be used if power and jump height were the major concerns; if the RSI was the major concern, drop jumps with ST landing should be used. Training with drop jumps, one of the main objectives should be increasing power output due to its significant correlation to jump height and the RSI in all conditions.
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Driller, Matthew, Francisco Tavares, Daniel McMaster, and Shannon O’Donnell. "Assessing a smartphone application to measure counter-movement jumps in recreational athletes." International Journal of Sports Science & Coaching 12, no. 5 (August 25, 2017): 661–64. http://dx.doi.org/10.1177/1747954117727846.

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The use of counter-movement jumps as a measure of neuromuscular performance in athletes has become common in the sport setting. Accurate methods of measuring jump parameters are often expensive, difficult to transport and require expert knowledge. A new smartphone application ( My Jump) claims to be a valid and reliable tool for assessing jump height but is yet to be evaluated by independent researchers. Sixty-one recreational athletes (30 male/31 female, mean ± SD; age: 20 ± 4 years) each performed three counter-movement jumps (totalling 183 jumps) on a force plate following a standardised warm-up. All jumps were recorded using an iPhone 6 s and analysed for jump height (m) and flight time (s) using the My Jump application. Jumps were compared between a force plate and My Jump for validity with inter-scorer reliability also assessed. Results show that My Jump is valid (mean bias = 0.9 cm, r = 0.96) and reliable (typical error of estimate = 1.4 cm) for assessing jump performance in recreational athletes using an iPhone 6 s with a 240 Hz high-speed camera. My Jump is a cost-effective and easy-to-use alternative for measuring vertical jump performance without the need for specialist equipment or expertise.
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Sánchez-Sixto, Alberto, Andrew Harrison, and Pablo Floría. "Larger Countermovement Increases the Jump Height of Countermovement Jump." Sports 6, no. 4 (October 26, 2018): 131. http://dx.doi.org/10.3390/sports6040131.

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Simulation studies show that jump performance can be improved by increasing the depth of countermovement. The purpose of this study was to determine how modifications to the depth of countermovement lead to changes in jump height and the biomechanical parameters related to center of mass displacement and force application. Twenty-nine competitive males participated in this investigation, performing nine countermovement jumps using a self-selected, a deep, and a shallow crouch position. Jump height and relative net vertical impulse were greater when using a deeper crouch position, compared to the self-selected position. Force application variables did not report differences, when the deeper countermovement was compared to the self-selected countermovement; although, the shallower countermovement showed higher values in force application parameters. The deeper countermovement jumps achieved higher velocities of the center of mass than the self-selected jumps, while shallower jumps produced lower velocities than the self-selected jumps. The results of this investigation were consistent with simulation studies, showing that deep countermovements increase net vertical impulse, leading to a higher jump height. In addition, the maximum downward velocity was higher, when the crouch position was deeper. Conversely, force-applied variables did not change when jump performance was increased.
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Fuchs, Philip X., Julia Mitteregger, Dominik Hoelbling, Hans-Joachim K. Menzel, Jeffrey W. Bell, Serge P. von Duvillard, and Herbert Wagner. "Relationship between General Jump Types and Spike Jump Performance in Elite Female and Male Volleyball Players." Applied Sciences 11, no. 3 (January 25, 2021): 1105. http://dx.doi.org/10.3390/app11031105.

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In performance testing, it is well-established that general jump types like squat and countermovement jumps have great reliability, but the relationship with volleyball spike jumps is unclear. The objectives of this study were to analyze the relationship between general and spike jumps and to provide improved models for predicting spike jump height by general jump performance. Thirty female and male elite volleyball players performed general and spike jumps in a randomized order. Two AMTI force plates (2000 Hz) and 13 Vicon MX cameras (250 Hz) captured kinematic and kinetic data. Correlation and stepwise-forward regression analyses were conducted at p < 0.05. Simple regression models with general jump height as the only predictor for spike jumps revealed 0.52 ≤ R2 ≤ 0.76 for all general jumps in both sexes (p < 0.05). Alternative models including rate of force development and impulse improved predictions during squat jumps from R2 = 0.76 to R2 = 0.92 (p < 0.05) in females and from R2 = 0.61 to R2 = 0.71 (p < 0.05) in males, and during countermovement jumps with arm swing from R2 = 0.52 to R2 = 0.78 (p < 0.01) in males. The findings include improved prediction models for spike jump height based on general jump performance. The derived formulas can be applied in general jump testing to improve the assessment of sport-specific spike jump performance.
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Yu, Bo, Bruce Mizrach, and Norman R. Swanson. "New Evidence of the Marginal Predictive Content of Small and Large Jumps in the Cross-Section." Econometrics 8, no. 2 (May 19, 2020): 19. http://dx.doi.org/10.3390/econometrics8020019.

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We investigate the marginal predictive content of small versus large jump variation, when forecasting one-week-ahead cross-sectional equity returns, building on Bollerslev et al. (2020). We find that sorting on signed small jump variation leads to greater value-weighted return differentials between stocks in our highest- and lowest-quintile portfolios (i.e., high–low spreads) than when either signed total jump or signed large jump variation is sorted on. It is shown that the benefit of signed small jump variation investing is driven by stock selection within an industry, rather than industry bets. Investors prefer stocks with a high probability of having positive jumps, but they also tend to overweight safer industries. Also, consistent with the findings in Scaillet et al. (2018), upside (downside) jump variation negatively (positively) predicts future returns. However, signed (large/small/total) jump variation has stronger predictive power than both upside and downside jump variation. One reason large and small (signed) jump variation have differing marginal predictive contents is that the predictive content of signed large jump variation is negligible when controlling for either signed total jump variation or realized skewness. By contrast, signed small jump variation has unique information for predicting future returns, even when controlling for these variables. By analyzing earnings announcement surprises, we find that large jumps are closely associated with “big” news. However, while such news-related information is embedded in large jump variation, the information is generally short-lived, and dissipates too quickly to provide marginal predictive content for subsequent weekly returns. Finally, we find that small jumps are more likely to be diversified away than large jumps and tend to be more closely associated with idiosyncratic risks. This indicates that small jumps are more likely to be driven by liquidity conditions and trading activity.
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Pawlik, Damian, Adam Kawczyński, Jan Chmura, Krzysztof Maćkała, Marcin Kutrzyński, and Dariusz Mroczek. "Jumping Flying Distance and Jump Performance of Elite Male Volleyball Players at FIVB Volleyball Men’s World Championship." Applied Sciences 10, no. 6 (March 18, 2020): 2045. http://dx.doi.org/10.3390/app10062045.

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We investigated different specific jumping performances of high-level male volleyball players. The aim of this study was to assess covered jumping distance, jump height, and number of jumps performed at certain positions by volleyball players competing at the 2014 FIVB Volleyball Men’s World Championship in Poland. A total of 140 male volleyball players from national teams participated in the study. The analysis was performed for jumping flying distance (JFD), jump serve height (SJH), attack jump height (AJH), block jump height (BJH), and quantity of jumps (JC). The analysis of JFD of attack jumps showed that the middles covered a shorter distance than the other players. When analyzing the block jump lengths, distance during jump performance covered by the receivers (R1) was shorter than that of the opposites. Analysis of SJH by volleyball players at various positions showed statistically significant differences (P < 0.05) among the middles (M1, M2), receivers (R1, R2), and opposites (O). Statistically significant differences (P < 0.05) in BJH were found between the middles and the rest of the players. The results of the experiment show a high degree of reliability for jump height during serve and attack, jumping flying distance covered during an attack, and number of block jumps. The strongest relationship was seen between jump components, which predominantly depend only on a volleyball player performing a specific action (e.g., jump serve or attack jump).
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Dissertations / Theses on the topic "Jump"

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Zambon, Nancy. "Jumps diffusion and jump risk pricing." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3423229.

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Every day market operators exchange tens of thousand of stocks, creating an extremely rich information set to study price dynamics. Indeed, the pattern followed by asset returns have been a fundamental topic in finance literature for decades. Several studies provide evidence, Ball and Torous (1983), Jarrow and Rosenfeld (1984), and Jorion (1988) among others, that stock prices show sudden but infrequent movements of large magnitude, that are commonly known as jumps. Thus, it is a standard to design the dynamic of stock prices as a combination of a continuous diffusion component, plus discontinuous jumps. Because of their relevance in economics, finance, and decision sciences, the present thesis focuses on jumps in stock returns. Note, Chapters 1 and 2 represent two different papers, respectively entitled “Jump risk and pricing implications” and “The cross-sectional diffusion of jumps and the identifcation of collective sectorial movements”, each of them develops the main theme in a different direction. Chapter 1: construction of a jump risk factor. A central model in the description of market returns and risks is the Sharpe (1964), Lintner (1965), Mossin (1966) and Black (1972) CAPM. Subsequently, Fama and French (1993) and Carhart (1997) among others, proposed alternative asset-pricing models that add to the CAPM additional risk sources. Chapter 1 contributes to the existing literature by proposing a factor which captures investors fear of future jumps. Moreover, we add it to the Carhart (1997) model, thus putting forward a 5-factor model, and show that not only our factor is able to capture common variation in stock returns, but also that its use improves the model performance. We additionally compute the risk premiums for the five risk sources of the model and find that they are always positive and not signifcantly different from their factor means. In doing this we employ all CRSP stocks over the 1925-2014 sample period, which leads to 89 years of assets prices and more than 24,000 stocks. Chapter 2: cross-sectional jump diffusion. Even if there is evidence of price jumps in various markets, there is still little understanding about their cross-sectional diffusion. Chapter 2 investigates the presence of contemporaneous jumps among a large number of stocks, the multivariate jumps (or MJs), using a high-frequency dataset of considerable dimension. The database includes 1-minute prices for all 3,509 stocks belonging to the Russell 3000 index between January 2, 1998 and June 5, 2015 (4,344 days), data that we treat both as a whole as well by focusing on its 11 industries. Using the information about MJs, we then propose two indexes which summarize data on cross-sectional jump diffusion: the daily diffusion index (or DID), and the intraday diffusion index (or DII). Results confirm the usefulness of both DID and DII, which trends and residuals show more and higher spikes in correspondence of important economic moments, as in 2008 and 2010. Moreover, we observe a positive and signifcant association of diffusion indexes with the market, and highlight that limiting the analysis to systemic events could be misleading and incomplete, while we suggest a combined use of systemic and non-systemic MJs. We additionally establish a relationship between detected MJs and market-level news. Our results have important implication not only for asset allocation and hedging, but also in asset pricing. Regarding this last point, by including our diffusion indexes to the CAPM model, we prove that DID and DII capture common variation in stock returns that is missed by the market factor. This advocates to employ mulivariate jump information to build a factor capturing the cross-sectional jump risk, which could then be added, e.g., to the 5-factor model we propose in Chapter 1.
Ogni giorno gli operatori di mercato si scambiano decine di migliaia di titoli, creando in questo modo un ricco bacino d'informazione che può essere utilizzato per studiare la dinamica dei prezzi. Infatti, il processo seguito dai rendimenti dei titoli rappresenta un argomento fondamentale nella letteratura finanziaria da decenni. Diversi studi forniscono prove, tra gli altri Ball e Torous (1983), Jarrow e Rosenfeld (1984), e Jorion (1988), circa la presenza di improvvisi ed infrequenti movimenti di grande ampiezza nei prezzi delle azioni, conosciuti con il nome di jump (salti). Pertanto, è uno standard disegnare la dinamica dei prezzi delle azioni combinando una componente diffusiva continua e una componente discontinua rappresentata dai jump. A causa della loro rilevanza in economia, finanza e scienze delle decisioni, la presente tesi si concentra sui jump nei rendimenti azionari. Si noti che i capitoli 1 e 2 rappresentano due diversi paper, intitolati rispettivamente "Rischio legato ai jump e implicazioni sui prezzi" e "La diffusione nella cross-section dei jump e l'identificazione dei movimenti settoriali di tipo collettivo", ognuno dei quali sviluppa il tema principale in una diversa direzione. Capitolo 1: costruzione di un fattore di rischio legato ai jump. Un modello centrale nella descrizione dei rischi e rendimenti di mercato è quello proposto da Sharpe (1964), Lintner (1965), Mossin (1966) e Black (1972): il CAPM. Successivamente, Fama e French (1993) e Carhart (1997), tra gli altri, hanno proposto modelli di asset pricing alternativi, sviluppati espandono il CAPM con l’aggiunta di ulteriori fonti di rischio. Il primo capitolo contribuisce alla letteratura esistente proponendo un fattore in grado di catturare la paura degli investitori di futuri salti nei prezzi delle azioni, fattore che viene successivamente aggiunto al modello di Carhart (1997) creando, di conseguenza, un modello a cinque fattori. Tramite l’utilizzo di questo modello, dimostriamo che non solo il nostro fattore è in grado di catturare variazioni comuni nei rendimenti azionari, ma anche che il suo utilizzo migliora le prestazioni del modello. Infine calcoliamo i premi per il rischio associati alle cinque fonti di rischio del modello e mostriamo che essi sono sempre positivi e non significativamente diversi dai rendimenti medi dei fattori. Il database utilizzato per tutte le elaborazioni è costituito dalle informazioni reperibili tramite il CRSP per il periodo 1925-2014, scelta che ci permette di utilizzare una base di informazioni molto ampia: 89 anni di dati e più di 24.000 titoli. Capitolo 2: diffusione nella cross-section dei jump. Nonostante sia stata evidenziata la presenza di jump nei prezzi dei titoli per vari mercati, continua ad essere limitata la comprensione della loro diffusione nella cross-section. Il secondo capitolo indaga la presenza di jump che coinvolgono contemporaneamente un gran numero di azioni, i salti multivariati (o MJ), utilizzando un database di dati in alta frequenza di notevoli dimensioni. Il database include i prezzi a 1 minuto per tutti i 3.509 titoli appartenenti all'indice Russell 3000 tra il 2 Gennaio 1998 e il 5 Giugno 2015 (4.344 giorni), dati che trattiamo sia nel loro complesso sia concentrandoci sulle 11 industrie cui appartengono. Utilizzando le informazioni sui jump multivariati, proponiamo due indici informativi della diffusione in cross-section dei jump: un indice di diffusione giornaliero (o DID), e un indice di diffusione intraday (o DII). I risultati confermano l'utilità di entrambi gli indici, i cui trend e residui mostrano picchi più alti in corrispondenza di importanti fasi economiche, come ad esempio il 2008 e il 2010. Inoltre, osserviamo una correlazione positiva e significativa degli indici di diffusione con il mercato ed evidenziamo che un’analisi limitata agli eventi sistemici potrebbe essere fuorviante e incompleta. Diversamente si consiglia l’uso combinato di jump multivariati sistemici e non sistemici. Siamo inoltre in grado di stabilire una relazione tra jump multivariati e notizie a livello di mercato. I nostri risultati hanno importanti implicazioni non solo per le attività di asset allocation ed hedging, ma anche nel settore di asset pricing. Per quanto riguarda questo ultimo punto, includendo i nostri indici di diffusione in un modello CAPM, dimostriamo che, sia il DID che il DII, catturano variazioni comuni dei rendimenti azionari che sono invece tralasciate dal fattore di mercato. Questi risultati depongono a favore dell’utilizzo di informazioni sui jump multivariati per la costruzione di un fattore che catturi il rischio di jump nella cross-section, che potrebbe poi essere aggiunto, ad esempio, nel modello a 5 fattori che abbiamo proposto nel Capitolo 1.
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Broussard, Tracey Ann. "Jump! How high?" FIU Digital Commons, 2004. http://digitalcommons.fiu.edu/etd/1816.

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JUMP! HOW HIGH? is a memoir of a journey to a black belt in Karate, one that explores the duality inherent in being a nurturing yet powerful woman. The book moves between personal growth and an exploration of karate training, questioning both the means by which martial arts training promotes growth and the dichotomy of what it means to be a good girl/bad girl. The karate style in which the author trains embraces the Samurai virtues of honor, justice, loyalty, wisdom, compassion and bravery. This is juxtaposed by the virtues of the Southern woman, compliance, hospitality, and warmth, with which the author was brought up. In the final analysis, the author grapples and comes to terms with the question of loyalty to the self.
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Flykt, Ebba, and Hanna Magnusson. "JJ PRO JUMP." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279726.

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Det här examensarbetet har genomförts inom Teknisk Design på Kungliga Tekniska Högskolan i samarbete med företaget NOA Aluminium. Uppdraget i detta projekt har varit att utveckla en hoppsele som ska användas av skridskoåkare och tränare inom konståkning. Hoppselen ska vara konstruerad för 20-talet i moderna material. Den ska också upplevas som smidig och hållbar. Selen ska vara anpassningsbar för olika konståkare och redskapet ska erbjuda extrafunktioner som kan hjälpa att främja konståkarens inlärningsprocess samt underlätta tränarens arbete. Under detta arbete har iterativa undersökningar gjorts för att samla information om uppgiften och de problem som uppstår vid användning av de befintliga redskapen. En marknadsanalys genomfördes, och intervjuer, samtal och diskussioner har hållits. Under marknadsanalysen framgick det att det finns tre olika redskap som idag används inom konståkning. Dessa tre är en handhållen hoppsele, NoFall samt en hoppsele med vajerblock. Från detta var det viktigt att få ut information om nackdelar och fördelar med de olika redskapen, samt få en bild av vad användarna värderar högt av att använda redskapen. Efter undersökningsfasen användes ett flertal metoder för att kreativt få fram många olika idéer och lösningar på problemet. Några av de idégenereringsmetoder som användes var Brainstorming, Brainwriting, 3-6-5 samt struktur- och formvariation. Efter idégenerering kunde tre koncept utvecklas. Dessa tre koncept särskilde sig från varandra. Mette var en vidareutveckling av den handhållna hoppselen, Magda var en sele som skulle fungera genom magnetisk levitation, och Stella var en bärande ställning. Koncepten utvärderades och diskuterades, därefter valdes ett av koncepten för vidareutveckling. Det valda konceptet blev Mette, en handhållen sele med ergonomiskt fokus för konståkare och tränare. Redskapet innefattar en teleskopisk aluminiumstång, en vajerkonstruktion, en sele för konståkare, en sele för tränare samt ett på- och avtagbart handtag för tränaren. Denna produkt ska fungera smidigt, vara bekväm, lätt att ta med sig, samt hållbar.
This report is part of the Bachelor’s Degree Project in Integrated Product Design at KTH, Royal Institute of Technology. The project was conducted in collaboration with NOA Aluminium. The task was to develop a jumping harness which is to be used by figure skaters and their coaches. It is common by figure skaters to use a jumping harness to reduce the learning time for performing different types of artistic movements. It was stated at the beginning of the project that the product ought to be constructed with modern materials and solutions. Furthermore, the harness should be adjustable to fit athletes of different ages and sizes. Several methods, such as market analysis, interviews, and observations, were used to gather information about the user and his or her experiences with their harness. The market analysis showed that there are three various types of jumping harnesses on the market today. These are known as NoFall, On-Ice track, and the hand-held harness. The interviews and observations gave a whole lot of information about the positive and negative sides of the tools. Thereafter, the ideation phase took a start. Numerous design thinking methods, such as brainstorming, 3-6-5, and brainwriting, were used to generate as many and as broad ideas as possible. Henceforth, three ideas were chosen, all of which differed a lot from each other. The concepts were named Mette, Magda, and Stella. Mette is a development of the hand-held jumping harness. Moreover, Magda is a concept that works through magnetic levitation, and Stella is a bearing rack. After careful evaluation, the concept called Mette was chosen for further development. The final concept is a product that aims to be comfortable, easy to carry, and sustainable for the environment. The product consists of a telescopic aluminum bar, a wire construction, a detachable handle for the coach, as well as one harness for the athlete and one for its coach.
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Liao, Fuong-Cheng William. "The influence of different drop jump training techniques on jump performance." Thesis, University of Ulster, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411659.

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Wong, Ho Cheung. "Control of a quadruped standing jump and running jump over irregular terrain obstacles /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487760357823082.

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Rosenbaum, Molly Anne. "One Jump Forward, Two Jumps Back: A Qualitative Study of Parental Issues Raising Adolescents with Autism." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7028.

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There have been numerous investigations seeking to quantify the experience of parents raising adolescents of autism, but remarkably few have looked at the total experience qualitatively, as reported by parents. The present study was conducted along with a larger study for adolescents with autism participating in the PEERS® social skills group intervention, which includes simultaneous parent sessions. This study analyzed comments made in the parent group, identifying the issues parents reported spontaneously through a qualitative analysis of 12 unstructured hour-long sessions including parents (n = 16) and graduate student clinicians. The purpose of this investigation was to explore the meaning and experiences of these parents to gain increased understanding about the needs of both parents and adolescents with autism. Themes resulting from the hermeneutic analysis of these videos focused on the adolescents and their "spark," a term coined by the parents denoting the unique strengths of their children, the values they share with the family, the impact of autism on the family, lack of self-awareness, being included and finding "one good friend." There was also a strong theme of the parents seeking support from one another. Finally, the parents spoke often of planning for/hoping for the future and what it may bring for their adolescent with autism. These themes can help describe the challenges/successes of parenting an adolescent with autism. This study provides some direction for further research to inform supports for parents whose children are approaching or are in the midst of adolescence with autism. Some other findings in our study were that parents are very concerned about acceptance of family values by their adolescent. Future studies can explore further what parents' needs are and how clinicians can help them.
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Griggs, Cameron V. "Relationship Between Lower Body Strength, Countermovement Jump Height, and Optimal Drop Jump Drop Height." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3098.

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The purpose of this study was to understand the relationship between back squat one-repetition maximum relative to body mass (1RMrel), countermovement jump height (CMJH), and optimal drop height in drop jump (DHopt). Fifteen male participants with various sport backgrounds and training experience completed a one repetition maximum (1RM) back squat, maximum countermovement jump (CMJ), and drop jumps (DJ) from incrementally increasing drop heights to determine which drop height elicited the greatest jump height. The DHopt testing protocol was unique in that smaller increments were used to determine DHopt compared to what has been reported in literature previously. Pearson correlation coefficients revealed that DHopt had small (r=0.214) and moderate (r=0.464) relationships with 1RMrel and CMJH, respectively. A second analysis (n=13) was conducted after two participants (i.e. powerlifters) were identified as possibly being representative of a different population. The second analysis found that DHopt had strong relationships with 1RMrel (r=0.645) and CMJH (r=0.690). Results from this study seem to suggest that individuals with greater 1RMrel and CMJH tend to have a higher DHopt. However, this relationship may not be observed among all populations due to likely differences in sport background, genetics, and/or training experience.
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Tassi-Londorfou, Eleftheria. "Jump diffusion models in volatility." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249634.

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Conforti, Giovanni, Pra Paolo Dai, and Sylvie Roelly. "Reciprocal class of jump processes." Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7077/.

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Processes having the same bridges as a given reference Markov process constitute its reciprocal class. In this paper we study the reciprocal class of compound Poisson processes whose jumps belong to a finite set A in R^d. We propose a characterization of the reciprocal class as the unique set of probability measures on which a family of time and space transformations induces the same density, expressed in terms of the reciprocal invariants. The geometry of A plays a crucial role in the design of the transformations, and we use tools from discrete geometry to obtain an optimal characterization. We deduce explicit conditions for two Markov jump processes to belong to the same class. Finally, we provide a natural interpretation of the invariants as short-time asymptotics for the probability that the reference process makes a cycle around its current state.
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Hadjerioua, Boualem 1957. "Behavior of hydraulic jump basins." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291709.

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The goal of this project was to determine the performance of two types of stilling basins with varying tailwater elevation. The performance was evaluated in terms of scour at the toe of the stilling basin and containment of the jump in the basin. The investigation involved establishing the relationships for different flow rates, different velocities and depth of approach flow for the U.S. Bureau of Reclamation stilling basins III and IV. It is well known that the Bureau of reclamation stilling basins perform satisfactorily for design tailwater conditions. It is not clear how much higher or lower the tailwater can be and still have marginally acceptable performance in the basin. This research sought to establish: (1) the behavior changes with high and low tailwater, and (2) the limiting range of tailwater for acceptable performance.
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Books on the topic "Jump"

1

Carter, Jill. Jump, jump, jump. Bothell, WA: The Wright Group, 1997.

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ill, Costantino Valerie, ed. Jump! Jump! Los Angeles: Price Stern Sloan, 1996.

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Kalan, Robert. Jump, frog, jump! London: Corgi, 1986.

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Murphy, Stuart J. Jump, kangaroo, jump. New York, NY: HarperCollinsPublishers, 1999.

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Kalan, Robert. Jump, frog, jump! New York: HarperFestival, 2003.

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Carbone, Elisa Lynn. Jump. New York: Viking, 2010.

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Jafrate, Keith. Jump! Nottingham: Slow Dancer Press, 1988.

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Jump! New York: Lodestar Books/Dutton, 1998.

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Lupica, Mike. Jump. New York: Villard Books, 1995.

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Lupica, Mike. Jump. New York: Kenstington Books, 1995.

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Book chapters on the topic "Jump"

1

Weik, Martin H. "jump." In Computer Science and Communications Dictionary, 850. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_9738.

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Gikhman, Iosif Ilyich, and Anatoli Vladimirovich Skorokhod. "Jump Processes." In The Theory of Stochastic Processes II, 187–257. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-61921-2_4.

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Hager, Willi H. "Sloping Jump." In Energy Dissipators and Hydraulic Jump, 41–52. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-8048-9_3.

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Weik, Martin H. "image jump." In Computer Science and Communications Dictionary, 751. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_8651.

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Weik, Martin H. "unconditional jump." In Computer Science and Communications Dictionary, 1857. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_20369.

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Szulga, Jerzy. "Jump Processes." In Introduction to Random Chaos, 97–120. Boca Raton: Routledge, 2022. http://dx.doi.org/10.1201/9780203749906-7.

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Weik, Martin H. "phase jump." In Computer Science and Communications Dictionary, 1260. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_13916.

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Weik, Martin H. "jump instruction." In Computer Science and Communications Dictionary, 850. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_9741.

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Hollar, David W. "Jump Conditions." In Trajectory Analysis in Health Care, 179–95. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59626-6_13.

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Osterhage, Wolfgang W. "Jump Transformations." In Mathematical Theory of Advanced Computing, 63–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60359-8_5.

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Conference papers on the topic "Jump"

1

Nowak, Till. "Jump." In ACM SIGGRAPH ASIA 2009 Computer Animation Festival. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1665208.1665227.

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Nowak, Till. "Jump." In ACM SIGGRAPH 2009 Computer Animation Fesitval. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1596685.1596758.

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Terry, Michael, Janet Cheung, Justin Lee, Terry Park, and Nigel Williams. "Jump." In Graphics Interface 2007. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1268517.1268540.

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Takahashi, Takumi, Keisuke Shiro, Akira Matsuda, Ryo Komiyama, Hayato Nishioka, Kazunori Hori, Yoshio Ishiguro, Takashi Miyaki, and Jun Rekimoto. "Augmented jump." In UbiComp '18: The 2018 ACM International Joint Conference on Pervasive and Ubiquitous Computing. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3267242.3267270.

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Witschen, Linus, Hassan Ghasemzadeh Mohammadi, Matthias Artmann, and Marco Platzner. "Jump Search." In GLSVLSI '19: Great Lakes Symposium on VLSI 2019. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3299874.3317998.

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Yao, Lining, Sayamindu Dasgupta, Nadia Cheng, Jason Spingarn-Koff, Ostap Rudakevych, and Hiroshi Ishii. "Multi-jump." In the 2011 annual conference extended abstracts. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/1979742.1979836.

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Flores-Galea, Antonio Luis. "The jump." In 2010 Second IEEE Region 8 Conference on the History of Telecommunications (HISTELCON). IEEE, 2010. http://dx.doi.org/10.1109/histelcon.2010.5735306.

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Zhang, Han, Maosong Sun, Xiaochen Wang, Zhengyang Song, Jie Tang, and Jimeng Sun. "Smart Jump." In the 26th International Conference. New York, New York, USA: ACM Press, 2017. http://dx.doi.org/10.1145/3041021.3054166.

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Zhang, Han. "Smart Jump." In the 26th International Conference. New York, New York, USA: ACM Press, 2017. http://dx.doi.org/10.1145/3041021.3055364.

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Graur, Cristian. "COMPARATIVE TECHNIQUES ANALYSIS OF LOWER LIMB EXPLOSIVE POWER TO THE TRIPLE JUMPERS." In eLSE 2014. Editura Universitatii Nationale de Aparare "Carol I", 2014. http://dx.doi.org/10.12753/2066-026x-14-248.

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The analysis of the lower limb explosive power was performed on two of the most valuable Romanian triple jumpers in 2013.One of the tested athletes was Marian Oprea,Olimpic silver medallist in 2004 Athena and in a same time Romanian record holder on senior triple jump event with a result of 17,81 m. The other tested athlete was Valentin Scanghel, Romanian record holder, also in triple jump event on IIIthJuniors category, with 14,70 m, as personal best. The used device for the investigation of explosive power of lower limbs was Optojump Next System. In order to identify the level of explosive power of lower limb, each athlete performed three tests related to standing repetitive jumping of two legs and one test addressed to single maximal jump on two legs. The used tests were : 15 seconds repetitive jumps test; 30 seconds repetitive jumps test; stiffness jumps test and squat jump test. The order of test execution was:the first one,15sec. jump test, the second, 30 sec. jump test, then squat jump test and stiffness test. During the tests it was followed H-average height reached by center of mass, Tf- flying time, Tc- contact time, Pwr- power. Also, other parameters, such as: specific energy(J/Kg), specific power(w/kg), total energy (J) and total power(W)were determined by the Optojump Next System software on each performed test. Comparing the results we are able to identify the level of anaerobic alactacid power, the level of maximal explosive power and the level of reactive power and muscular elasticity, which can be used in the training process.
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Reports on the topic "Jump"

1

Elliott, Robert J. Filtering of Jump Processes. Fort Belvoir, VA: Defense Technical Information Center, October 1987. http://dx.doi.org/10.21236/ada189701.

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Kewisch J. and C. Tang. RHIC Optics for Transition Jump. Office of Scientific and Technical Information (OSTI), May 2001. http://dx.doi.org/10.2172/1061647.

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Huijser, Marcel, and S. C. Getty. Modified jump-outs for white-tailed deer and mule deer. Nevada Department of Transportation, September 2022. http://dx.doi.org/10.15788/ndot2018.2022.

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The height of the jump-outs should be low enough for the target species to readily jump down to the safe side, or the habitat side, of the fence. At the same time, the jump-outs should be high enough to discourage animals that are on the habitat side of the fence from jumping up into the fenced road corridor. Previous research along US Hwy 93 North in Montana showed that only about 32% of the mule deer and about 7% of the white-tailed deer that appeared on top of the jump-outs, jumped down to safety. For this project, 10 of the jump-outs along US Hwy 93 North were lowered in height and provided with a bar on top. The height of the bars (made from rebar) and their setback from the vertical face of the jump-outs was adjustable and the researchers applied 4 different treatments: 2 different heights (18 and 15 inches) and 3 different setbacks (4, 12, and 15 inches). The overall effectiveness of the lowered jump-outs in allowing white-tailed deer to jump down, regardless of the height and setback of the bar, was only just above 5% (no improvement). For mule deer the effectiveness of the lowered jump-outs in allowing them to jump down, regardless of the height and setback of the bar, was about 64% (this was double the effectiveness of non-modified jump-outs).
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Tang, Chunmei, and Jie Wei. Simulation Result of Phase Jump Mistiming. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/1119560.

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Bundy, Mark. The Regional Nature of Aerodynamic Jump. Fort Belvoir, VA: Defense Technical Information Center, January 1999. http://dx.doi.org/10.21236/ada360570.

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Lewis, Mark J., David Beksinski, and Peter White. Small-Scale Propulsion for Jump Augmentation. Fort Belvoir, VA: Defense Technical Information Center, December 2001. http://dx.doi.org/10.21236/ada422725.

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Ruggiero A. G. RF Acceleration with Harmonic-Number Jump. Office of Scientific and Technical Information (OSTI), May 2006. http://dx.doi.org/10.2172/1061828.

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Calvet, Laurent, and Adlai Fisher. Multifrequency Jump-Diffusions: An Equilibrium Approach. Cambridge, MA: National Bureau of Economic Research, December 2006. http://dx.doi.org/10.3386/w12797.

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Ahrens L., E. Gill, and E. Raka. Passing Transition with a Double Phase Jump. Office of Scientific and Technical Information (OSTI), November 1985. http://dx.doi.org/10.2172/1130925.

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Cooper, Gene R. Extending the Jump Analysis for Aerodynamic Asymmetry. Fort Belvoir, VA: Defense Technical Information Center, August 2004. http://dx.doi.org/10.21236/ada426056.

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