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Artykuły w czasopismach na temat "Starts and turns"
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Rühlemann, Christoph. "Turn structure and inserts". International Journal of Corpus Linguistics 25, nr 2 (28.08.2020): 185–214. http://dx.doi.org/10.1075/ijcl.19098.ruh.
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Abstract Turns-at-talk often do not start with their main business but rather with a pre-start (Sacks et al., 1974). This paper investigates the correlation of pre-starts with inserts, one of three major word classes (Biber et al., 1999). Based on the BNC’s mark-up, I investigate how inserts are positionally distributed in large amounts of turns of varied lengths. The analysis shows that inserts are overwhelmingly attracted to turn-first positions, the likely location of pre-starts. Further, in a subsample of 1,000 ten-word turns manually coded for pre-starts, 86% of all inserts serve a pre-start function. The findings call into question current speech processing models that fail to factor in turn structure. Further, pre-starts have crucial sequential and interactional implications as early indicators whether the new turn “agrees” with the prior turn and are likely key signals aiding listeners’ action ascription.
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de Jesus, Karla, Luis Mourão, Hélio Roesler, Nuno Viriato, Kelly de Jesus, Mário Vaz, Ricardo Fernandes i João Paulo Vilas-Boas. "3D Device for Forces in Swimming Starts and Turns". Applied Sciences 9, nr 17 (30.08.2019): 3559. http://dx.doi.org/10.3390/app9173559.
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Biomechanical tools capable of detecting external forces in swimming starts and turns have been developed since 1970. This study described the development and validation of a three-dimensional (six-degrees of freedom) instrumented block for swimming starts and turns. Seven force plates, a starting block, an underwater structure, one pair of handgrips and feet supports for starts were firstly designed, numerically simulated, manufactured and validated according to the Fédération Internationale de Natation rules. Static and dynamic force plate simulations revealed deformations between 290 to 376 µε and 279 to 545 µε in the anterior-posterior and vertical axis and 182 to 328.6 Hz resonance frequencies. Force plates were instrumented with 24 strain gauges each connected to full Wheatstone bridge circuits. Static and dynamic calibration revealed linearity ( R 2 between 0.97 and 0.99) and non-meaningful cross-talk between orthogonal (1%) axes. Laboratory and ecological validation revealed the similarity between force curve profiles. The need for discriminating each upper and lower limb force responses has implied a final nine-force plates solution with seven above and two underwater platforms. The instrumented block has given an unprecedented contribution to accurate external force measurements in swimming starts and turns.
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Qiu, Xiao, Blanca De la Fuente, Alberto Lorenzo i Santiago Veiga. "Comparison of Starts and Turns between Individual and Relay Swimming Races". International Journal of Environmental Research and Public Health 18, nr 9 (29.04.2021): 4740. http://dx.doi.org/10.3390/ijerph18094740.
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The present study investigated swimmers’ performances on the starting and turning segments between individual and relay races. A total number of 72 race performances of the same swimmers in both relay 4 × 100 m finals (freestyle, medley, and mixed freestyle) and individual 100 m finals or semi-finals (butterfly, breaststroke, and freestyle) from the LEN European Swimming Championships were compared with repeated measures MANOVA. Swimmers performed 5–7% faster starts in the relay than in the corresponding individual events, despite no differences in the flight phase and a lower performance (shorter distances and slower velocities) on the underwater start section. The 15 m turn times were slower in the butterfly relay races although no specific differences in the underwater parameters were observed. These results suggest that specific training of the starting and turning segments should be performed under relay conditions to optimise pacing and performance in the underwater sections.
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Worawannotai, Chalermpong, i Watcharintorn Ruksasakchai. "Competition-Independence Game and Domination Game". Mathematics 8, nr 3 (5.03.2020): 359. http://dx.doi.org/10.3390/math8030359.
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The domination game is played on a graph by two players, Dominator and Staller, who alternately choose a vertex of G. Dominator aims to finish the game in as few turns as possible while Staller aims to finish the game in as many turns as possible. The game ends when all vertices are dominated. The game domination number, denoted by γ g ( G ) (respectively γ g ′ ( G ) ), is the total number of turns when both players play optimally and when Dominator (respectively Staller) starts the game. In this paper, we study a version of this game where the set of chosen vertices is always independent. This version turns out to be another game known as the competition-independence game. The competition-independence game is played on a graph by two players, Diminisher and Sweller. They take turns in constructing maximal independent set M, where Diminisher tries to minimize | M | and Sweller tries to maximize | M | . Note that, actually, it is the domination game in which the set of played vertices is independent. The competition-independence number, denoted by I d ( G ) (respectively I s ( G ) ) is the optimal size of the final independent set in the competition-independence game if Diminisher (respectively Sweller) starts the game. In this paper, we check whether some well-known results in the domination game hold for the competition-independence game. We compare the competition-independence numbers to the game domination numbers. Moreover, we provide a family of graphs such that many parameters are equal. Finally, we present a realization result on the competition-independence numbers.
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Matthews, Roger. "False Starts, Wrong Turns and Dead Ends: Reflections on Recent Developments in Criminology". Critical Criminology 25, nr 4 (25.09.2017): 577–91. http://dx.doi.org/10.1007/s10612-017-9372-9.
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Hermosilla, Francisco, Ross Sanders, Fernando González-Mohíno, Inmaculada Yustres i José M. González-Rave. "Effects of Dry-Land Training Programs on Swimming Turn Performance: A Systematic Review". International Journal of Environmental Research and Public Health 18, nr 17 (3.09.2021): 9340. http://dx.doi.org/10.3390/ijerph18179340.
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Swimming coaches have prescribed dry-land training programs over the years to improve the overall swimming performance (starts, clean swimming, turns and finish). The main aim of the present systematic review was to examine the effects of dry-land strength and conditioning programs on swimming turns. Four online databases were scrutinised, data were extracted using the Preferred PRISMA guidelines and the PEDro scale was applied. A total of 1259 articles were retrieved from database searches. From the 19 studies which were full-text evaluated, six studies were included in the review process. The review indicated that plyometric, strength, ballistic and core training programs were implemented for improving swimming turn performance. Strength, ballistic and plyometric training focusing on neural enhancement seem to be effective for improving swimming turn performance. The data related to training of the core were not conclusive. Coaches should consider incorporating exercises focusing on improving the neuromuscular factor of the leg-extensor muscles into their daily dry-land training programs. More researches are needed to provide a better understanding of the training methods effects and training organisations for improving swimming turn performance.
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Veiga, Santiago, Antonio Cala, Pablo G. Frutos i Enrique Navarro. "Comparison of starts and turns of national and regional level swimmers by individualized-distance measurements". Sports Biomechanics 13, nr 3 (13.06.2014): 285–95. http://dx.doi.org/10.1080/14763141.2014.910265.
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Gueguen, Yannick, Yann Czorlich, Max Mastail, Bruno Le Tohic, Didier Defay, Pierre Lyonnard, Damien Marigliano i in. "Yes, it turns: experimental evidence of pearl rotation during its formation". Royal Society Open Science 2, nr 7 (lipiec 2015): 150144. http://dx.doi.org/10.1098/rsos.150144.
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Cultured pearls are human creations formed by inserting a nucleus and a small piece of mantle tissue into a living shelled mollusc, usually a pearl oyster. Although many pearl observations intuitively suggest a possible rotation of the nucleated pearl inside the oyster, no experimental demonstration of such a movement has ever been done. This can be explained by the difficulty of observation of such a phenomenon in the tissues of a living animal. To investigate this question of pearl rotation, a magnetometer system was specifically engineered to register magnetic field variations with magnetic sensors from movements of a magnetic nucleus inserted in the pearl oyster. We demonstrated that a continuous movement of the nucleus inside the oyster starts after a minimum of 40 days post-grafting and continues until the pearl harvest. We measured a mean angular speed of 1.27° min −1 calculated for four different oysters. Rotation variability was observed among oysters and may be correlated to pearl shape and defects. Nature's ability to generate so amazingly complex structures like a pearl has delivered one of its secrets.
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Stevenson, Leslie. "Critique of Kant on Arithmetic". Estudos Kantianos [EK] 9, nr 1 (10.07.2021): 77. http://dx.doi.org/10.36311/2318-0501.2021.v9n1.p77.
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Arithmetical truths are a priori, but our understanding of them starts with the practical experience of counting. Whether arithmetic is analytic – or synthetic as Kant maintained – turns out to depend on what view we take about the precise scope of logic. A survey of mathematical theorizing about various kinds of numbers shows that there is more than one kind of “construction” or “intuition” involved. Kant’s conception of a priori intuition, as applied to arithmetic, seems to be just mathematical perception.
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Auer, Peter. "Turn-allocation and gaze: A multimodal revision of the “current-speaker-selects-next” rule of the turn-taking system of conversation analysis". Discourse Studies 23, nr 2 (9.03.2021): 117–40. http://dx.doi.org/10.1177/1461445620966922.
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It is argued in this paper that a multimodal analysis of turn-taking, one of the core areas of conversation analytic research, is needed and has to integrate gaze as one of the most central resources for allocating turns, and that new technologies are available that can provide a solid and reliable empirical foundation for this analysis. On the basis of eye-tracking data of spontaneous conversations, it is shown that gaze is the most ubiquitous next-speaker-selection technique. It can function alone or enhance other techniques. I also discuss the interrelationship between the strength for sequential projection and the choice of next-speaker-selection techniques by a current speaker. The appropriate consideration of gaze leads to a revision of the turn-taking model in that it reduces the domain of self-selection and expands that of the current-speaker-selects-next sub-rule. It also has consequences for the analysis of “simultaneous starts”.
Rozprawy doktorskie na temat "Starts and turns"
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Farrell, Matthew Todd. "Angular momentum in turns and abrupt starts : strategies for bipedal balance control". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51660.
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Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2009.Includes bibliographical references (p. 81-83).
Transients occur in human walking during a transition to, from, and between steady state walking and act as an impulse destabilizing an otherwise normal gait cycle. Turns and accelerated starts are all common transients encountered and managed intelligently by humans everyday. The population of elderly has increased and understanding balance control in healthy subjects will be more important. In addition, humanoid bipeds are rapidly becoming a more common part of our everyday life. Therefore, they must also be able to navigate our environments adroitly if they are to assist us in our daily living. This thesis takes biomechanical principals of angular momentum and applies them to healthy subjects in an effort to elucidate human balance control strategies. Each transient task is unique, and despite large segmental contributions to whole-body angular momentum during movement, the whole-body angular momentum remains tightly regulated. A analysis of segmental contributions to the principal components explaining more than 90% makes clear the balance control strategy used by healthy humans during these transients.
by Matthew Todd Farrell.
S.M.
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Clothier, Peter University of Ballarat. "Underwater kicking following the freestyle tumble-turn". University of Ballarat, 2004. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/12776.
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Swim turns are a component of competitive swimming where considerable advantage can be gained or lost. This thesis investigates underwater dolphin and flutter kicking techniques and their application to exits following the turn in freestyle swimming. Five separate investigations were conducted to examine the kinetics and kinematics of each underwater kicking technique and are presented in expanded journal manuscript form. Studies one, two and three involved the comparison of freestyle turns when using flutter and dolphin kicking wall exit techniques. The results obtained indicated that freestyle turns using flutter kicking were faster than dolphin kicking in age-group swimmers. For this group, significant and equal improvements were made to flutter and dolphin kick turn performances following six weeks of dolphin kick and dolphin kick turn training. However, no difference in turn times were observed between kicking conditions by older and more highly skilled swimmers. Study four involved a kinematical comparison of maximal underwater free-swimming dolphin and flutter kicking. Results showed dolphin kick to be a superior underwater free-swimming technique. Greater foot width, increased ankle range of movement and greater vertical displacement of the ankle and foot during kicking were shown to be highly predictive of faster underwater dolphin kicking. Investigation five compared the drag forces and kinematics between the dolphin and flutter kicking techniques while subjects were towed at velocities representing those experienced following wall turn push-off. Results favour the dolphin kick as a superior underwater technique at these higher velocities. Increased underwater dolphin kicking efficiency, as measured by decreased net towing force, was found to be associated with larger kick amplitude – rate ratios, and higher kick amplitude – streamline length ratios.Doctor of Philosophy
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Clothier, Peter. "Underwater kicking following the freestyle tumble-turn". Thesis, University of Ballarat, 2004. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/58058.
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Swim turns are a component of competitive swimming where considerable advantage can be gained or lost. This thesis investigates underwater dolphin and flutter kicking techniques and their application to exits following the turn in freestyle swimming. Five separate investigations were conducted to examine the kinetics and kinematics of each underwater kicking technique and are presented in expanded journal manuscript form. Studies one, two and three involved the comparison of freestyle turns when using flutter and dolphin kicking wall exit techniques. The results obtained indicated that freestyle turns using flutter kicking were faster than dolphin kicking in age-group swimmers. For this group, significant and equal improvements were made to flutter and dolphin kick turn performances following six weeks of dolphin kick and dolphin kick turn training. However, no difference in turn times were observed between kicking conditions by older and more highly skilled swimmers. Study four involved a kinematical comparison of maximal underwater free-swimming dolphin and flutter kicking. Results showed dolphin kick to be a superior underwater free-swimming technique. Greater foot width, increased ankle range of movement and greater vertical displacement of the ankle and foot during kicking were shown to be highly predictive of faster underwater dolphin kicking. Investigation five compared the drag forces and kinematics between the dolphin and flutter kicking techniques while subjects were towed at velocities representing those experienced following wall turn push-off. Results favour the dolphin kick as a superior underwater technique at these higher velocities. Increased underwater dolphin kicking efficiency, as measured by decreased net towing force, was found to be associated with larger kick amplitude – rate ratios, and higher kick amplitude – streamline length ratios.Doctor of Philosophy
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Clothier, Peter. "Underwater kicking following the freestyle tumble-turn". University of Ballarat, 2004. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/14612.
Pełny tekst źródłaStreszczenie:
Swim turns are a component of competitive swimming where considerable advantage can be gained or lost. This thesis investigates underwater dolphin and flutter kicking techniques and their application to exits following the turn in freestyle swimming. Five separate investigations were conducted to examine the kinetics and kinematics of each underwater kicking technique and are presented in expanded journal manuscript form. Studies one, two and three involved the comparison of freestyle turns when using flutter and dolphin kicking wall exit techniques. The results obtained indicated that freestyle turns using flutter kicking were faster than dolphin kicking in age-group swimmers. For this group, significant and equal improvements were made to flutter and dolphin kick turn performances following six weeks of dolphin kick and dolphin kick turn training. However, no difference in turn times were observed between kicking conditions by older and more highly skilled swimmers. Study four involved a kinematical comparison of maximal underwater free-swimming dolphin and flutter kicking. Results showed dolphin kick to be a superior underwater free-swimming technique. Greater foot width, increased ankle range of movement and greater vertical displacement of the ankle and foot during kicking were shown to be highly predictive of faster underwater dolphin kicking. Investigation five compared the drag forces and kinematics between the dolphin and flutter kicking techniques while subjects were towed at velocities representing those experienced following wall turn push-off. Results favour the dolphin kick as a superior underwater technique at these higher velocities. Increased underwater dolphin kicking efficiency, as measured by decreased net towing force, was found to be associated with larger kick amplitude – rate ratios, and higher kick amplitude – streamline length ratios.Doctor of Philosophy
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Lindley, Steven L. "Kinematic analysis of freestyle and backstroke flip-turns in competitive swimming". Virtual Press, 2001. http://liblink.bsu.edu/uhtbin/catkey/1221279.
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The primary purpose of this study was to gain a better understanding of the turn interval and the factors that influence turn performance. A secondary purpose was to investigate the relationship between turn time, the components that influence turn time, and performance in competitive swimming. Fifty-eight swimmers (24 female, 34 male) from four NCAA Division I schools were videotaped in the 100 and 200 yd freestyle and backstroke events during three collegiate competitions. The freestyle was shown to be significantly different from the backstroke in race time, turn time, and time during the in phase of the turn for both genders in the 100 and 200 yard events. Significant positive correlations were found between turn time and race time across both genders and all four events. Inspecting the velocity curves of the turns allowed the key outphase variables to be defined. Turn time is an important determinant of race time in collegiate swimming. Using the dolphin kick technique during a turn causes large fluctuations in velocity during the active glide phase of the turn.School of Physical Education
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Hardt, Julie E. "Optimization of the competitive swimming track start based on lower limb asymmetry". University of Western Australia. School of Sport Science, Exercise and Health, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0192.
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The swimming track start is a complex motor skill that utilizes asymmetric lower limb action. The purpose of this study was to explore whether it could be optimized by applying the commonly accepted view that there are asymmetries in the function and behaviors of the lower limbs. Initially, the study aimed to examine the relationship between various measures of lower limb asymmetry and the swimmers' preferences for forward foot placement in the swimming track start. Participants underwent a 7 week training period whereby both the left foot forward (LFF) and the right foot forward (RFF) track starts were practiced. The philosophy behind this training protocol was to ensure that participants received equal practice with the preferred and non-preferred stance so that a dominant stance, if it existed, could emerge. Consequently, the relationships between the dominant track start stance and the lower limb asymmetry measures could be determined more accurately. Participants were male (N=11) and female (N=11) swimmers, aged 12-16 years, from the UWA-Uniswim National Age Squad. Kinetic and kinematic data were collected for the track start prior to and following the 7 week training intervention. The intervention was finished when a participant had completed approximately 14 dive sessions where both the LFF and RFF track starts were practiced. The performance criterion measure was time to 5 m. Despite significant differences in vertical force and velocity contributions following the intervention, time to 5 m did not improve for either the LFF or the RFF track start. Four different measures of lower limb asymmetry were collected, including footedness, the preferred track start stance, and the dominant take-off limb for the unilateral and bilateral counter-movement jump (CMJ). Sixteen of 22 participants displayed changes in their dominant track start stance. Eleven participants showed biases for one stance (6 for the LFF & 5 for the RFF), and 11 participants remained or became more symmetrical. Results indicated that the preferred track start stance was the only measure of asymmetry that was significantly related to track start performance (x2[2]= 6.71, p=.04 for pre-intervention & x2[2]=7.77, p=.02 for post-intervention). All other measures of lower limb asymmetry were shown to be unrelated to track start preference and performance. It was suggested that the 7 week training intervention did not provide a sufficient amount of time to see conclusive effects on 5 m time or to make conclusive comparisons between the dominant track start stance and measures of asymmetry. Since the preferred track start corresponded with better performance less than 50% of the time, it was suggested that swimmers and coaches experiment with different dive techniques to find the start which is most effective for them and spend more time on them during training.
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Carissimi, Alicia. "Avaliação da influência do turno escolar e dos componentes circadianos do sono no comportamento de crianças e adolescentes". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/148125.
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Objetivo: Avaliar a relação do turno escolar e o ritmo circadiano de crianças e adolescentes sob a expressão de sintomas comportamentais e de níveis de cortisol e melatonina. Métodos: Estudo transversal envolvendo 639 estudantes do ensino fundamental e médio (idade média de 13,03 anos, variando de 8–18; 58,5% meninas) recrutados em cidades localizadas na região do Vale do Taquari, Rio Grande do Sul, Brasil. Na segunda fase, 80 participantes foram selecionados aleatoriamente para coleta de saliva para análise de melatonina e cortisol. Os parâmetros circadianos do sono foram acessados pelo auto-relato de duração do sono nos dias de semana e fins de semana, diferenças no horário de acordar e dormir, déficit de sono, ponto médio do sono nos dias de semana e fins de semana, jetlag social e pela versão em português do Morningness-Eveningness Questionnaire (MEQ) para avaliação do cronotipo. Os desfechos, níveis de melatonina e cortisol salivares, foram medidos através de amostras de saliva pela manhã, tarde e noite, e problemas de comportamento (sintomas psiquiátricos), foram avaliados usando a Lista de verificação comportamental para crianças e adolescentes (em inglês, Child Behavior Checklist, CBCL). O estudo foi realizado de acordo com as diretrizes éticas internacionais (número de aprovação no comitê de ética: 12-0386 GPPG/HCPA). Resultados: No primeiro artigo, estudantes do turno da manhã eram significativamente mais velhos, apresentavam maior diferença entre os horários de acordar e dormir, maior déficit de sono e jetlag social. O déficit de sono apresentado por meninas foi maior do que o observado em meninos da mesma idade. regressão multivariada, utilizando o método passo-a-passo, identificou jetlag social, diferença nos horários de acordar nos dias de semana e fins de semana e ponto médio nos fins de semana como preditores significativos de déficit de sono. O segundo artigo demonstrou que o turno escolar influenciou a secreção de melatonina, a qual se correlacionou com os parâmetros do sono circadianos, diferentemente para o grupo não-clínico e clínico. Os níveis de melatonina foram positivamente correlacionados com ponto médio do sono em estudantes do turno da manhã, e negativamente correlacionados com ponto médio do sono em estudantes do turno da tarde. No terceiro artigo, identificou-se idade, horário de início da escola, ponto médio de sono e duração do sono nos dias de semana como preditores de sintomas psiquiátricos, avaliados pelo CBCL. Os estudantes do turno da manhã, classificados como cronotipo do tipo vespertino, apresentaram menor duração do sono durante a semana e maior jetlag social do que estudantes do tipo matutino. Além disso, os alunos do turno da manhã com sintomas psiquiátricos apresentaram menor duração do sono e padrão circadiano de sono mais cedo. Conclusões: Os achados do presente estudo mostram que o turno escolar influencia os parâmetros circadianos de sono, fatores fisiológicos e sintomas psiquiátricos em crianças e adolescentes. Nossos resultados reforçam a importância de redirecionar crianças e adolescentes para um turno escolar que contemple as preferências individuais de sono, prevenindo as consequências negativas à saúde, tanto no sono quanto em sintomas psiquiátricos.Objective: To evaluate the relationship of the school schedules and the circadian rhythm of children and adolescents under the expression of behavioral symptoms and cortisol and melatonin levels. Methods: This cross-sectional study involved 639 elementary and high school students (mean age 13.03 years, range 8–18, 58.5% female) recruited from the cities located in the Vale do Taquari region, Rio Grande do Sul, Brazil. In the second phase, 80 participants were randomly selected for saliva collection to analyze melatonin and cortisol. Circadian sleep parameters were assessed by self-reported sleep duration on weekdays and weekends, bedtime and wake time differences, sleep deficit, midpoint of sleep on weekdays and weekends, social jetlag, and the Portuguese version of Morningness-Eveningness Questionnaire (MEQ) for assessment of chronotype. The outcomes, salivary melatonin and cortisol levels, were measured in morning, afternoon, and night saliva samples, and behavior problems (psychiatric symptoms) were assessed using the Child Behavior Checklist (CBCL). This study was performed according to international ethical guidelines (ethics committee approval number: 12–0386 GPPG/HCPA). Results: In the first article, the morning-school-time students presented significantly higher age, bedtime and wake up differences, sleep deficits, and social jetlag. The sleep deficit presented by girls was greater than that observed in boys of the same age. A step-by-step multivariate logistic regression identified social jetlag, the difference between waking times on weekdays and weekends, and the mid-point of sleep on weekends as significant predictors of sleep deficit. In the second article, school start time influenced the melatonin secretion, which correlated with circadian sleep parameters, although differently for non-clinical and clinical groups. Melatonin levels were positively correlated with sleep midpoint in morning students, and negatively correlated with sleep midpoint in afternoon students. In the third article, we identified age, school start time, midpoint of sleep on weekdays, and sleep duration on weekdays as predictors of psychiatric symptoms, as evaluated by the CBCL. Students with a morning school start time whose chronotype was classified as evening had shorter sleep duration on weekdays and higher social jetlag than morning-type participants. Moreover, students with a morning school start time and psychiatric symptoms had shorter duration of sleep and earlier circadian sleep patterns. Conclusion: The findings of the present study showed that school start time influences on the circadian sleep patterns, physiological factors and psychiatric symptoms in children and adolescents. Our findings emphasize the importance to redirect children and adolescents for a school start time that includes the individual preferences of sleep, preventing the negative health consequences, both in sleep and in psychiatric symptoms.
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Gaus, Nurdiana. "The Indonesian state university in flux : academics and the neo-liberal turn". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/the-indonesian-state-university-in-flux-academics-and-the-neoliberal-turn(61156cdd-4d61-47ca-b859-c817ab2ac6d4).html.
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This thesis aims to better understand the under life of Indonesian academics during implementation of major policy changes associated with the Higher Education Act 2012. More specifically the study sought to explore and analyse the principal changes as experienced by academics in Indonesian state universities, how academics responded to these changes and the impact of these changes upon the nature of academic work and organisations. The research undertaken was in the form of a multiple-embedded case study using semi-structured interviews, observations, and document analysis as instruments to collect data. Interviews were conducted with 30 academics in three state universities in Indonesia. The findings demonstrate how Indonesian academics' work is moving away from their traditional functions and roles towards new prescribed roles revealing tensions between maintaining their existing identities and pressures from the external environment to adapt. Using Scott's notion of 'weapons of the weak' the study reveals how Indonesian academics have resisted and accommodated policy reform in ways that have taken largely discursive and unobtrusive forms. It is anticipated that the study will both contribute to a better understanding of the dynamics of academics' work lives as they encounter large scale reform, and offer guidance for policy makers in the formulation and enactment of relevant policy.
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Juergens, Cheryl A. "A kinetic and kinematic comparison of the grab and track starts in competitive swimming". Thesis, 1994. http://hdl.handle.net/1957/35313.
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In competitive swimming a spread in time of only 0.10,
and 0.16 seconds constituted the difference between
finishing second and seventh, and first and eighth,
respectively, in the women's 50 yard freestyle at the 1993
NCAA Division III National Swimming & Diving Championships.
Based on data collected over a period of years Maglischo
(1993) noted that "improving the start can reduce race times
by at least 0.10 second" (p. 544). Therefore it is
beneficial to the outcome of a race to direct attention to
maximizing the effectiveness of the racing start. The
primary purpose of this study therefore was to compare
kinetic and kinematic components of the grab and track style
starts.
During the past two decades extensive kinematic
research has been done using cinematography. These studies
used time, velocity, displacement, and the measure of angles
(i.e. at takeoff and entry) to measure the relative
effectiveness of various racing starts. Conversely, there
has been limited analysis of racing starts using kinetic
measurements.
Four kinetic and five kinematic variables were
evaluated in this study to compare the relative effectiveness
of the starting techniques. Ten female varsity
swimmers, who had used both starts interchangeably in
competition, were selected for this study. Force components
were obtained directly from a Kistler force platform. Block
time, horizontal and vertical impulse, and average horizontal
and vertical force values were obtained in subsequent
analysis of the Force-time data. Each subject was videotaped
as she executed three trials of each start. The video
data were digitized and then analyzed using two dimensional
video analysis techniques.
The type of start technique used on each trial was
randomly ordered. Kinematic variables of horizontal and
vertical displacement of the center of mass, average
horizontal velocity and vertical velocity were also obtained
from the video data in order to determine which of the two
starting techniques (i.e. grab vs. track) was the most
effective.
2x10 (starting technique x subject) repeated measures
Analyses of Variance indicated significant differences
(p<0.01) between the starting styles for five of the nine
dependent variables measured which provided support for the
original contention that the track style start was the more
effective of the two racing start techniques investigated.
The results of this study provide support to the empirical
and observational findings of earlier researchers.Graduation date: 1995
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Patz, Amy E. "Optimizing freestyle flip-turn technique". Thesis, 2005. http://hdl.handle.net/10125/20655.
Pełny tekst źródłaKsiążki na temat "Starts and turns"
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The science of a flip turn. Ann Arbor, Michigan: Cherry Lake Publishing, 2016.
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Stars that turn. Charleston, SC: David Newhouse, 2011.
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Straczynski, J. Michael. Amazing Spider-man: Revelations ; Until the stars turn cold. Tunbridge Wells: Panini, 2002.
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Olney, Claude. The bucks start here: How to turn your hidden assets into money. New York: Morrow, 1991.
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Olney, Claude. The bucks start here: How to turn your hidden assets into money. New York: Morrow, 1991.
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Turn the stars upside down: The last days and tragic death of Crazy Horse. New York: St. Martin's Press, 2001.
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From brainwave to business: How to turn your brilliant idea into a successful start-up. Harlow, England: Pearson, 2010.
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Adam, Lowry, i Conley Lucas, red. The Method method: Seven obsessions that helped our scrappy start-up turn an industry upside down. New York: Portfolio/Penguin, 2011.
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Davis, Dan M. (Dan Michael), 1956-, red. Turn left at Orion: A hundreds of night sky objects to see in a home telescope-- and how to find them. Wyd. 4. Cambridge: Cambridge University Press, 2011.
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Start and run a business from home: How to turn your hobby or interest into a business. Wyd. 2. Oxford: How To Books, 2009.
Znajdź pełny tekst źródłaCzęści książek na temat "Starts and turns"
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Matsaganis, Manos. "False Starts, Wrong Turns, and Dead Ends. How (Not) to Ensure Social Protection for All Workers". W Defining and Protecting Autonomous Work, 31–50. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06397-8_3.
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Adema, Willem, Chris Clarke i Olivier Thévenon. "Family Policies and Family Outcomes in OECD Countries". W The Palgrave Handbook of Family Policy, 193–217. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54618-2_9.
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AbstractFamilies in OECD member countries have changed dramatically in recent decades. Across almost all OECD countries, couples are marrying and starting a family later than ever before. Fertility rates are low. Divorce and re-partnering have become much more common, giving rise to a diversity of new family forms. The (male) single-earner family model, previously dominant, is now largely a thing of the past. This chapter examines how families and family policies have changed in OECD countries in recent decades. It starts with an overview of changes in families, in partnering behaviours, in family living arrangements, and in family work arrangements. The chapter then turns to the evolution of family policy and the policy response to changing families, such as increases in public Early Childhood Education and Care (ECEC) support and the provision of fathers-only paid parental leave. It concludes by highlighting important key challenges ahead, including how policy must adapt to growing inequalities between families.
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Bakir, Vian, i Andrew McStay. "Affective Contexts Worldwide". W Optimising Emotions, Incubating Falsehoods, 53–69. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13551-4_3.
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AbstractTo better understand the mechanics of how false information challenges the health of the civic body, this chapter explores the economics of emotion (the optimisation of datafied emotional content for financial gain) and the politics of emotion (the optimisation of datafied emotional content for political gain) under different affective contexts worldwide. It starts by examining elections in the USA, given its politically affectively polarised population, its media polarisation and long experience of emotive electoral disinformation on social media. It then turns to the Philippines, given its affective patronage democracy, clientelism and extremely high social media usage. This is followed by examining Sweden, a country that should be resilient to false information given its strong civic institutions, but that has witnessed a breakdown of consensus culture initiated by the emergence of right-wing populist nationalist political parties and supporting online media. These examples provide a grounded sense of the scale and dynamics of false information media systems. They highlight the importance of understanding specificities of affective contexts, and their intersections with international information flows such as information warfare, ideological struggles and resources for content moderation by global platforms.
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Gardner, Rod. "‘Broken’ Starts: Bricolage in Turn Starts in Second Language Talk". W Language Learning and Teaching as Social Inter-Action, 58–71. London: Palgrave Macmillan UK, 2007. http://dx.doi.org/10.1057/9780230591240_5.
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Cristani, Federica. "The Role of Sub-Regional Systems in Shaping International Investment Law-Making: The Case of the Visegrád Group". W Public Actors in International Investment Law, 135–53. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58916-5_8.
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AbstractThe present chapter focuses on the role of the Visegrád group (or V4, comprising Slovakia, Hungary, Poland and the Czech Republic) in international investment law-making. The chapter starts with a brief overview of the V4 group as a sub-regional system in Europe, including its modus operandi and main achievements in the field of economic cooperation. Subsequently, it turns to the regulation of foreign direct investment (FDI), both at the level of each V4 state and at EU level—with particular regard to the implication of the EU’s exclusive competence on FDI. Special attention is paid to the approach of the V4 countries towards the question of termination of intra-EU bilateral investment treaties (BITs)—including an overview of the related objections to jurisdiction that the four countries have raised over the years in investor-state arbitrations based on intra-EU BITs—and to the relationship of the V4 group with non-EU countries—especially with (selected) East Asian countries. The main question is whether—and to what extent—the V4 group as a sub-regional system has a role to play in international investment law-making. The chapter highlights the proactive and advocacy role that the V4 group has traditionally played in manifold subject-matters, including the promotion and protection of FDI, and supports the positive “soft power” the V4 may exercise in this respect.
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Cope, David. "Out thru the eye beyond the stars". W Turn the Wheel, 61. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-59259-420-7_38.
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Rietjens, Sebastiaan. "Intelligence in Military Missions: Between Theory and Practice". W Handbook of Military Sciences, 1–20. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-02866-4_96-1.
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AbstractIntelligence is the primary mechanism that military organizations use to generate understanding and its main purpose is to provide information to decision-makers such as commanders that may help illuminate their decision options. This chapter assesses the role of intelligence in military missions, more specifically the counterinsurgency and stabilizations missions that took place in, for example, former Yugoslavia, Iraq, Afghanistan, and Mali.The chapter starts by addressing the changing and increasingly complex nature of many of the conflicts from the 1990s onwards. It explores how this has influenced the use of intelligence and presents two distinct schools of thought. The first school of thought, referred to as Jominian intelligence, tries to unravel the operational environment in a systematic way and regards the intelligence challenges as a series of problems with definite solutions. The second school of thought, referred to as Clausewitzian intelligence, argues that the goal of intelligence is to assess uncertainty and reach a deliberate judgment.The main body of the chapter then analyzes the intelligence process and identifies several of the main intelligence issues within military missions. The intelligence process starts with the direction phase in which policy makers, military commanders, or planners state their needs, often referred to as information requirements. Several issues complicate such direction, including (1) the comprehensive focus of many current military missions, (2) their abstract and ambiguous strategic objectives and expectations, and (3) the military’s unfamiliarity with the area of operations.In the second phase of the intelligence process, the necessary information is collected. In addition to consulting their archives and databases, military units often have a plethora of means, both technical and human, available to collect information. Cross-cultural competencies are of crucial importance, in particular, during the collection phase.The third phase of the intelligence process, labeled processing, turns raw data into intelligence. During the processing phase, the data are analyzed in order to gain understanding or insight. This exceeds the registration of events, but includes understanding the meaning of these events as well as their importance.The fourth and final phase is dissemination of intelligence. Here, the relationship between the producers and consumers of intelligence during military missions is explored. This includes the reasons why consumers sometimes do not fully accept the intelligence they receive.The chapter concludes with an agenda for research on military intelligence. It calls, for example, for a more eclectic author base; multidisciplinary as well as comparative research; increased attention to oversight, ethics, and open source intelligence; and more emphasis on intelligence within the navy, special forces, and constabulary forces.
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Blakkisrud, Helge. "An Asian Pivot Starts at Home: The Russian Far East in Russian Regional Policy". W Russia's Turn to the East, 11–30. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69790-1_2.
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Kluzniak, W., M. Ruderman, J. Shaham i M. Tavani. "Pulsar Turn-On and Secondary Evaporation in the PSR 1957 + 20 Binary". W Timing Neutron Stars, 641–45. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2273-0_54.
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Christensen, Hilda Rømer, i Michala Hvidt Breengaard. "Towards a climate-friendly turn?" W Gender, Intersectionality and Climate Institutions in Industrialised States, 105–23. Abingdon, Oxon; New York, NY: Routledge, 2021.: Routledge, 2021. http://dx.doi.org/10.4324/9781003052821-9.
Pełny tekst źródłaStreszczenia konferencji na temat "Starts and turns"
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Verbisck, Janielly, Marilena Bittar, Marianna Bosch, Berta Barquero i Ricardo Benito. "Study and Research Paths for Statistics Teacher Education at Secondary School Level: An Exploratory Study". W Bridging the Gap: Empowering and Educating Today’s Learners in Statistics. International Association for Statistical Education, 2022. http://dx.doi.org/10.52041/iase.icots11.t2a2.
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We present the design and implementation of an inquiry-based activity based on a general proposal of the Anthropological Theory of the Didactic called “study and research path for teacher education” (SRP-TE) as a tool to reflect, develop, analyze, and experience proposals for teaching statistics at lower secondary school. Our proposal of SRP-TE starts from a textbook activity based on a statistical graph about water distribution in Brazil and turns it into an open activity that fosters different dimensions of statistical work (searching, collecting, cleaning, organizing, and exploring data), including interdisciplinary interaction. After its implementation, when asked about the content inherent in the inquiry, pre-service teachers seem to disregard many dimensions of the statistical work, especially those related to data handling.
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Wärmefjord, Kristina, Rikard Söderberg, Lars Lindkvist, Björn Lindau i Johan S. Carlson. "Inspection Data to Support a Digital Twin for Geometry Assurance". W ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70398.
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Geometrical variation is a problem in all complex, assembled products. Recently, the Digital Twin concept was launched as a tool for improving geometrical quality and reduce costs by using real time control and optimization of products and production systems. The Digital Twin for geometry assurance is created together with the product and the production systems in early design phases. When full production starts, the purpose of the Digital Twin turns towards optimization of the geometrical quality by small changes in the assembly process. To reach its full potential, the Digital Twin concept is depending on high quality input data. In line with Internet of Things and Big Data, the problem is rather to extract appropriate data than to find data. In this paper, an inspection strategy serving the Digital Twin is given. Necessary input data describing form and shape of individual parts, and how this data should be collected, stored and utilized is described.
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Waniczek, P., P. Jeschke, H. Schoenenborn i T. Metzler. "Investigation of the Surge Behavior of a Multi-Stage Axial Compressor With a Multi-Sensor Probe". W ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46219.
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The surge behavior of the first rotor of an eight-stage aero engine high pressure compressor has been investigated experimentally. For that purpose, a new multi-hole pressure probe was developed and adapted to the axial compressor test rig. Due to the high time resolution measurements (more than 45000 measuring points per surge cycle) it is possible to investigate the dynamic flow field of a surge cycle in a time-accurate manner. The results especially show the complex flow field structure at the surge inception. At the rotor leading edge the flow shows perturbations with high amplitudes and initiates the surge event, whereas the flow at the rotor trailing edge is less influenced. The inflow vector turns around the leading edge of the blade relatively slowly. During that turn around three different characteristic flow conditions have been identified. These are ‘zero rotor turning’, ‘turbine-like flow’ and ‘no flow’. ‘No flow’ means, that the absolute velocity vector reaches a flow angle where it consists of a pure tangential velocity component. That is the point where the reverse flow phase is initiated. A 180° shift of the flow direction at the rotor trailing edge is the consequence. After a quasi-steady reverse flow the acceleration of the flow starts. In total, this paper gives new and fundamental insights into the unsteady flow field phenomena during various surge cycles. Especially the transient velocity vector imparts a good idea of the flow field structure of a surging compressor.
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Fu, Juan, Bengt Sunden i Xiaoqian Chen. "Analysis of Self-Pressurization Phenomenon in a Cryogenic Fluid Storage Tank With VOF Method". W ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63209.
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The self-pressurization phenomenon is studied numerically with the Volume of Fluid (VOF) method in a cryogenic fluid tank. Heat and mass transfer modelling is used for the phase change calculation at the interface. Transient simulations of the vaporization and pressure rise in a cylindrical liquid hydrogen tank are performed. The computations are carried out by using the CFD software package, Ansys Fluent, and an in-house developed code to calculate the source term associated with the phase change. Effects of the heat flux, fill level and gravity acceleration are investigated. Numerical results indicate that the pressure starts to rise after a certain time of sidewall heating and pressure rises gradually once the vaporization occurs. The rise rate increases as time elapses and is larger at higher heat flux at the same time. Multiple loops are observed in the fluid flow and thermal stratification is developed. The stratification degree is nearly the same for different fill levels at the same heat flux while the pressure rise rate increases as the fill fraction becomes larger. High temperature area appears when the fluid mixing becomes weaker as gravity acceleration decreases. Heat transfer turns to nucleate boiling at the wall from convection as evaporation occurs at the interface.
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Lockan, Michael, Dieter Bestle, Christian Janke i Marcus Meyer. "Optimization of Coupled System Components Using Approximations of Interface Quantities". W ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64135.
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Optimization of complex systems like jet engines is a process where discipline experts from several departments or even different companies have to work together. Thus, a complete system analysis code usually does not exist preventing an overall system optimization. Therefore, the system is typically split into components, and interface parameters between components are decided and fixed in early design stages based on low-fidelity information. Finally the components are optimized separately according to these fixed settings which, however, may prohibit an overall optimal system behavior even if sophisticated subsystem optimization is performed. Consequently, interface parameters should be varied in an overall coupled system optimization process and adapted to subsystem needs. This may be supported by utilizing collaborative optimization strategies. Basically there are two types of such optimization approaches: global strategies with nested optimization loops and local subsystem optimization strategies supported by sensitivity-based approximations of other subsystems. The multidisciplinary optimization approach presented here combines the benefits of both strategies: efficient global optimization and approximations of subsystem quantities without the need of sensitivity information. It starts with an initial design of experiments for each component by varying all input parameters and evaluating the associated outputs. Due to the fact that these quantities consist of shared design parameters and outputs of other components, not all of the used input parameter combinations are feasible for the coupled system. In order to enforce consistency for the entire system, the interface regions are characterized by feasibility criteria acting as approximated constraints for further component optimizations. Beside that an approximation of the overall system objective is provided to all components to drive component design towards an overall optimal system performance. The developed approach is demonstrated by an application to a jet engine turbine consisting of a high and low pressure part where the goal is to maximize the overall turbine efficiency. On the one hand the turbine is optimized with the proposed approach by splitting it into two coupled components; on the other hand the turbine is optimized as a complete system. It turns out that the proposed approach yields equally good results in much shorter time than overall optimization.
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Lin, Mengxuan, Dawei Li, Yu Zhao, Xiang Ren i Ronghai Qu. "Line-Start Permanent Magnet Motors with Variable Coil Turns". W 2018 XIII International Conference on Electrical Machines (ICEM). IEEE, 2018. http://dx.doi.org/10.1109/icelmach.2018.8507193.
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Xu, Changxue, Zhengyi Zhang, Yong Huang i Heqi Xu. "Phase Diagram of Pinch-Off Behaviors During Drop-on-Demand Inkjetting of Alginate Solutions". W ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2915.
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Abstract Viscoelastic polymer solutions have been extensively utilized in drop-wise manufacturing (such as inkjet printing) for a variety of biomedical applications. The pinch-off of viscoelastic jets is a key step towards generation of droplets in inkjet printing. This complex process is governed by interplay of four stresses including inertial stress, capillary stress, viscous stress, and elastic stress. Depending on polymer solution properties and process conditions, four types of pinch-off phenomenon were observed during inkjetting of viscoelastic alginate solutions. In this study, material properties of alginate solutions with different concentrations have been characterized, and three dimensionless numbers (Ohnesorge number Oh, Deborah number De and Weber number We) have been proposed to analyze different pinch-off behaviors. Phase diagram in terms of these three dimensionless numbers has been constructed to classify the regimes for different pinch-off types during inkjetting of viscoelastic alginate solutions. It is found that: 1) At low De and Oh, the viscoelastic effect is small. The capillary stress is mainly balanced by the inertial stress, resulting in front pinching. 2) At medium De and low Oh, the capillary stress is still mainly balanced by the inertial stress, but the elastic effect starts to show its effect by delaying the ligament thinning near the front-pinching location. With the increase of We, the pinch-off type may change from front pinching to hybrid pinching to exit pinching. 3) At low Oh and high De, the viscous and inertial effects are small. The capillary stress is mainly balanced by the elastic stress, resulting in exit pinching. 4) At high Oh and De, the viscoelastic effect is dominant. The capillary stress is mainly balanced by the viscous and elastic stresses. With the increase of We, middle pinching turns to be exit pinching due to the increase of the initial ligament diameter near the forming droplet.
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Fangbo, Jing, Lai Qiang, Wei Dongliang, Chen Xianhui i Yuan Yongqiang. "Economic Analysis for Nozzle Governing With Overload Valve Regulation Technology". W ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3322.
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With the implementation of low-carbon economy policy, clean energy (such as wind and solar energy) has been developing rapidly, and the percentage is increasing year by year; On the other hand, with a steadily growing percentage of residential electricity consumption and commercial electricity consumption, resulting in large electricity load difference between peak and valley, the load related requirements of modern steam power plants are noticeably changing. Whereas the past units being designed in base load now have to take part in peak load, and usually in a low load operation, unable to play its advantages of high efficiency in design load. In the article the current three main governing methods (i.e. nozzle governing, throttling governing and bypass governing) for steam turbine will be discussed and evaluated under economical criteria focused on the above described challenges for future power generating technologies. A new governing method is Nozzle governing with Overload Valve Regulation, which keeps the advantage that main steam pressure of the Nozzle governing steam turbine is higher under partial load conditions, and weakens the influence of the low efficiency of governing stage on high pressure turbine, effectively improves the efficiency of steam turbine unit under partial load conditions. In the turbine adopted the new governing method of Nozzle governing with Overload Valve Regulation, the first stage is governing stage, divided into several groups. Main steam from boiler goes through the main stop valve and main steam control valve in sequence, and then turns to the governing stage. When the load is below 85%THA, main steam control valve I, II and III are fully opened, main steam control valve IV is fully closed, and the unit is in sliding pressure operation. When the load is 85%THA, the main steam pressure can reach the rated pressure. With the load increasing, main steam control valve IV starts to open, but the main steam pressure maintains the rated pressure, adjusted to THA when main steam control valve IV is fully opened and the flowrate of governing stage reaches the maximum. In the load more than THA condition, the bypass valve starts to open, the main steam goes through the bypass steam room into the certain stage (as fourth), to meet the requirements of the super load, adjusted to VWO (about 108%THA) when the bypass valve is fully opened. Through the detailed description about the scheme set and calculation analysis about economy benefit of the new regulation technology of Nozzle governing with Overload Valve Regulation, it shows that with the annual load range of 40%THA–85%THA, the economy of turbine adopted the new regulation technology is better than bypass governing by about 21.6 kJ/kW.h. (CSPE)
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Azzouz, M. Salim, i Jan Brink. "Twists and Turns of a Senior Design Project". W ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66194.
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Teaching senior design courses and labs has not been an easy task for the two authors. It has been rather a daunting working task associated with great learning experiences. It was decided early on from the initiation of the mechanical engineering program at the McCoy School of Engineering at Midwestern State University that the senior design project within the senior design class is a testing and enriching experience for senior mechanical engineering students as well as the teaching faculty. The senior design course and labs are conducted as a research experience for undergraduate students and their assigned faculty. The proposed senior project spans over two semesters, fall and spring, where the students experience a full mechanical engineering related project from the inception phase, through the design and construction phases, and finishing with the testing and analysis phases. The inception phase stands essentially for the brainstorming phase where the students are required to come-up with a set of diverse solutions to their assigned project problem. The design and construction phases stand for choosing an optimal particular solution for their problem according to a set of defined criteria. Then, the students start the preliminary design phase with related cost estimation, and then finalize the design with a set of final drawings. After the design phase, the students start building a machine, an apparatus, a prototype or putting together the elements of a process. In this period they work intensely, with their faculty, the purchasing department, and mostly the department machinist, or the surrounding town machine shops. The testing and analysis phase stands for designing an experimental set-up, writing a testing procedure, and obtaining real time recorded data and proceeding with its analysis. In this technical paper, the authors talk about the requirements for a senior project known as the deliverables, the teaching tools used throughout the class work and labs, the students’ partial and final PowerPoints presentations and weekly and final reports. The authors describe the students overall achievements, and the archiving of the projects. Additionally, the authors talk about the twists and turns encountered during a senior project, with students, other faculty, the machinist, the lab technician, the secretary, and suppliers, and other difficulties experienced in running a full project with real final products. Finally, the authors talk about the aftermath of a senior project, eventual publications related to the project, and what is the view point of the American Board of Engineering and Technology (ABET) on these senior projects.
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Yin, Yue, LianShui Guo, Ning Han, Ji Zheng i Pengpeng Zhang. "A New Strategy of Cavity Cutting Trajectory Generation in High Speed Machining". W ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53700.
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High speed machining is widely used in manufacturing. For its high cutting speed, high feeding rate, and high machining accuracy, its requirements for cutting trajectory in high speed machining are so strict that only continuous and smooth trajectories with even cutting loads can lead to high machining efficiency and accuracy. The traditional row or ring machining trajectory fails to meet these requirements. In order to acquire the continuous and smooth machining trajectories, and to avoid load mutation in the machining process, some researchers developed a curvilinear cutting trajectory generating method based on partial differential equation. This trajectory, however, is still made up from free form curve segment, and unable to completely eliminate the effects on smoothness by line segment interpolation, which has a very adverse effect on the efficiency, tool life and machining accuracy. A new strategy to generate a continuous and smooth cavity cutting trajectories in high speed machining is introduced in this article. The new trajectory determines the necessity-nodes from outside (the boundary) to inside in the way of spiral cutting. It starts from the cavity center with spiral expanding, and each cutting loop adopts end connection between straight line and the tangent arc, meeting continuous first-order constraint satisfaction. The smooth trajectory reduces the amplitude and directing mutation of cutting force, thus effectively avoids the impact on the machining efficiency and machining accuracy by speeding down in the corner. The strategy also, by controlling the row space, ensures that there is no cutting residual. A cavity machining programming system based on this strategy is developed on Siemens UG-CAM module. The manufacturing of triangle cavities is studied as a case. It turns out that the new trajectory improves efficiency by 26.23% compared with the traditional one. It ensures a stable operation of the cutting tool in machining, therefore effectively extends the tool life. The main advantages are that the new strategy adopts the geometrical drawing strategy and the trajectories are all made up from the straight lines and the tangent arcs. The trajectory can greatly reduce NC code. It thoroughly removes the effort to mind the smooth, continuity and even cutting load of the tool-path.
Raporty organizacyjne na temat "Starts and turns"
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Bevelander, Pieter, i Henrik Emilsson. One size fits all? : Integration approaches for beneficiaries of international protection. Malmö university, 2021. http://dx.doi.org/10.24834/isbn.9789178771745.
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This thematic paper deals with integration policies concerning persons who aregranted international protection in EU Member States. It acknowledges that there are two general trends in integration policies - a civic turn and a local turn. The civic turn implies more integration requirements for migrants, decided upon by the state, that have an impact on the legal status of migrant newcomers. On the other hand, the local turn implies less national involvement with cities instead handling more of the integration policies, including funding and policy measures. The paper then describes four different models for the integration of beneficiaries of international protection: a national government-led model, a project based/multilevel governance model, a laissez-faire model, and a NGO-led model.
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Anayatova, Dilraba, Marina Basu, Saiarchana Darira, Andrew Freiband, Devynn Glanz, Atota Halkiyo, Setrag Hovsepian i in. Turn it around! An education guide to climate futures. Mary Lou Fulton Teachers College, maj 2022. http://dx.doi.org/10.14507/oge-tia.
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Building on the scientific evidence and keeping in focus policy promises made over the decades, this report mobilizes the power of socially engaged art to bring together visions and voices of youth from across the globe in a collective effort to address the root causes of the climate crisis. It starts with the premise that education is directly implicated in the climate crisis and our failure to imagine alternatives. But it can also be the catalyst for radical change. Aiming to shift and shuffle the dominant knowledge systems and categories with the cards from the Turn It Around! deck, this report urges you to turn toward the reality of the climate crisis by capturing its devastating impacts from youth perspective in a way statistical data might not. It challenges existing education policies, practices, and patterns as no longer possible, tolerable, or even thinkable. With the powerful imagination and creativity of youth, the report activates a series of turning points — intergenerational, decolonial, methodological, and pedagogical — in order to turn around the environmental catastrophe, while reconfiguring the role of education toward ecologically just and sustainable futures.
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Schueler, Beth, Joshua Goodman i David Deming. Can States Take Over and Turn Around School Districts? Evidence from Lawrence, Massachusetts. Cambridge, MA: National Bureau of Economic Research, styczeń 2016. http://dx.doi.org/10.3386/w21895.
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Ukkusuri, Satish, Lu Ling, Tho V. Le i Wenbo Zhang. Performance of Right-Turn Lane Designs at Intersections. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317277.
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Right-turn lane (RTL) crashes are among the most key contributors to intersection crashes in the US. Different right turn lanes based on their design, traffic volume, and location have varying levels of crash risk. Therefore, engineers and researchers have been looking for alternative ways to improve the safety and operations for right-turn traffic. This study investigates the traffic safety performance of the RTL in Indiana state based on multi-sources, including official crash reports, official database, and field study. To understand the RTL crashes' influencing factors, we introduce a random effect negative binomial model and log-linear model to estimate the impact of influencing factors on the crash frequency and severity and adopt the robustness test to verify the reliability of estimations. In addition to the environmental factors, spatial and temporal factors, intersection, and RTL geometric factors, we propose build environment factors such as the RTL geometrics and intersection characteristics to address the endogeneity issues, which is rarely addressed in the accident-related research literature. Last, we develop a case study with the help of the Indiana Department of Transportation (INDOT). The empirical analyses indicate that RTL crash frequency and severity is mainly influenced by turn radius, traffic control, and other intersection related factors such as right-turn type and speed limit, channelized type, and AADT, acceleration lane and AADT. In particular, the effects of these factors are different among counties and right turn lane roadway types.
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Haertel, Kateryna. ECMI Minorities Blog. Ukraine’s National Minorities Trapped by the War: the Cases of Ethnic Greeks and Bulgarians. European Centre for Minority Issues, marzec 2022. http://dx.doi.org/10.53779/smlq2239.
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As the war against Ukraine erupted on 24 February 2022, national minorities found themselves among its first victims, both as individuals and communities characterized by unique knowledge, language, and culture. This piece looks into the immediate effects of the war on ethnic Greeks and Bulgarians, and potential lessons learned for the state of Ukraine and its minorities from these tragic events. Whereas ethnic Greeks strive for physical survival in a besieged city of Mariupol and its surroundings, ethnic Bulgarians have mobilized in support of refugees. Those situations highlight the role of minority community leaders in voicing support for the Ukrainian authorities and as facilitators of aid from kin-states, as well as turn minority civil society organizations (CSOs) into agents of change of nation-wide significance.
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Hoffman, Wyatt. AI and the Future of Cyber Competition. Center for Security and Emerging Technology, styczeń 2021. http://dx.doi.org/10.51593/2020ca007.
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As states turn to AI to gain an edge in cyber competition, it will change the cat-and-mouse game between cyber attackers and defenders. Embracing machine learning systems for cyber defense could drive more aggressive and destabilizing engagements between states. Wyatt Hoffman writes that cyber competition already has the ingredients needed for escalation to real-world violence, even if these ingredients have yet to come together in the right conditions.
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Lutz, Carsten, Dirk Walther i Frank Wolter. Quantitative Temporal Logics: PSpace and below. Technische Universität Dresden, 2005. http://dx.doi.org/10.25368/2022.146.
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Often the addition of metric operators to qualitative temporal logics leads to an increase of the complexity of satisfiability by at least one exponential. In this paper, we exhibit a number of metric extensions of qualitative temporal logics of the real line that do not lead to an increase in computational complexity. The main result states that the language obtained by extending since/until logic of the real line with the operators 'sometime within n time units', n coded in binary, is PSpace-complete even without the finite variability assumption. Without qualitative temporal operators the complexity of this language turns out to depend on whether binary or unary coding of parameters is assumed: it is still PSpace-hard under binary coding but in NP under unary coding.
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Maydykovskiy, Igor, i Petras Užpelkis. The Physical Essence of Time. Intellectual Archive, grudzień 2020. http://dx.doi.org/10.32370/iaj.2450.
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The article considers the model of the space-frequency-time continuum, according to which the physical essence of Time is manifested as a fraction of electromagnetic energy spent on updating a material object in a cyclic process of copying-incarnation. For all structural levels of physical reality, the value of this fraction is a fundamental constant, which can be represented as the tangent of the loss angle, or expressed in radians, as the angle of inclination of the evolutionary spiral, which characterizes the rate of change of states or the duration of events and processes. The value of this constant can be calculated, and its value turns out to be identically equals to the square of the fine structure Constant (α2). The description of the method for identifying a new constant allows us to present the formula of Scientific Discovery as the Physical Essence of Time.
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Бережна, Маргарита Василівна. Maleficent: from the Matriarch to the Scorned Woman (Psycholinguistic Image). Baltija Publishing, 2021. http://dx.doi.org/10.31812/123456789/5766.
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The aim of the research is to identify the elements of the psycholinguistic image of the leading character in the dark fantasy adventure film Maleficent directed by Robert Stromberg (2014). The task consists of two stages, at the first of which I identify the psychological characteristics of the character to determine to which of the archetypes Maleficent belongs. As the basis, I take the classification of film archetypes by V. Schmidt. At the second stage, I distinguish the speech peculiarities of the character that reflex her psychological image. This paper explores 98 Maleficent’s turns of dialogues in the film. According to V. Schmidt’s classification, Maleficent belongs first to the Matriarch archetype and later in the plot to the Scorned Woman archetype. These archetypes are representations of the powerful goddess of marriage and fertility Hera, being respectively her heroic and villainous embodiments. There are several crucial characteristics revealed by speech elements.
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Pritchett, Lant, Kirsty Newman i Jason Silberstein. Focus to Flourish: Five Actions to Accelerate Progress in Learning. Research on Improving Systems of Education (RISE), grudzień 2022. http://dx.doi.org/10.35489/bsg-rise-misc_2022/07.
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There is a severe global learning crisis. While nearly all children start school, far too many do not learn even the most foundational skills of reading, writing, and basic mathematics during the years they spend there. The urgent need to address this crisis requires no elaborate reasoning. If one starts with love for a child, a human universal, it is easy to see that in the modern world a child’s dignity, self-worth, and freedom to define their own destiny require an adequate education. An adequate education is what will then enable that child to lead a full adult life as a parent, community member, citizen, and worker in the 21st century. To enable every child to leave school with the foundational skills they need will require fundamental changes to education systems. Since 2015, the Research on Improving Systems of Education (RISE) Programme, with which we are affiliated, has been conducting research exploring how to make these changes through country research teams in seven countries (Ethiopia, India, Indonesia, Nigeria, Pakistan, Tanzania, and Vietnam) and crosscutting teams on the political economy of education reform. Drawing on the cumulative body of research on learning outcomes and systems of education in the developing world, both from the RISE Programme and other sources, we advocate for five key actions to drive system transformation. (See next page.) A message cutting across all five actions is “focus to flourish”. Education systems have been tremendously successful at achieving specific educational goals, such as expanding schooling, because that is what they committed to, that is what they measured, that is what they were aligned for, and that is what they supported. In order to achieve system transformation for learning, systems must focus on learning and then act accordingly. Only after a system prioritises learning from among myriad competing educational goals can it dedicate the tremendous energies necessary to succeed at improving learning. The research points to these five actions as a means to chart a path out of the learning crisis and toward a future that offers foundational skills to all children. The first section that follows provides background on the depth and nature of the learning crisis. The remainder of the document explains each of the five actions in turn, synthesising the research that informs each action, contrasting that action with the prevailing status quo, and describing what the action would entail in practice.