Zaloguj się

Gotowe bibliografie tematyczne / Speed of development / Artykuły w czasopismach

Artykuły w czasopismach na temat „Speed of development”

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Speed of development.

Autor: Grafiati

Data publikacji: 25 maja 2024

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych artykułów w czasopismach naukowych na temat „Speed of development”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj artykuły w czasopismach z różnych dziedzin i twórz odpowiednie bibliografie.

1

Cross, Tom. "SPEED DEVELOPMENT: Technique drills for speed development". National Strength & Conditioning Association Journal 13, nr 2 (1991): 35. http://dx.doi.org/10.1519/0744-0049(1991)013<0035:tdfsd>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

2

Ustoev, Abdurazzok Kurbanovich. "DEVELOPMENT OF SPEED-POWER ABILITIES IN YOUNG SAMBISTS". CURRENT RESEARCH JOURNAL OF PEDAGOGICS 02, nr 11 (1.11.2021): 157–60. http://dx.doi.org/10.37547/pedagogics-crjp-02-11-30.

Pełny tekst źródła

Streszczenie:

The purpose of this article was to develop and experimentally substantiate the effectiveness of the training methodology for young sambo wrestlers 10 -11 years old with a focus on the speed-strength component. The experiment was attended by 24 young sambists from the sports school of the city of Termez, Surkhandarya region. The athletes were divided into experimental and control groups. A specially organized pedagogical experiment lasted 20 weeks. The content of the training sessions of the experimental group included a large number of general developmental and special exercises aimed at the development of speed-strength abilities of athletes. We used exercises with rubber shock absorbers, weights, jumping exercises, throwing various objects, games with elements of martial arts, outdoor games and exercises that contribute to the development of the ability to quickly tension and relax muscles.

Style APA, Harvard, Vancouver, ISO itp.

3

Garceau, Luke, Erich J. Petushek, Christina R. Feldmann, Tyler VanderZanden, Katlin Millin, Mark Spadavecchia, Kelly Petrauskas i William P. Ebben. "Resisted Speed Development The Effect Of Wind Speed". Journal of Strength and Conditioning Research 24 (styczeń 2010): 1. http://dx.doi.org/10.1097/01.jsc.0000367114.59026.c5.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

4

Bojak, Rick. "SPEED DEVELOPMENT: Leg Speed: Quick, Easy and Inexpensive". National Strength & Conditioning Association Journal 15, nr 3 (1993): 70. http://dx.doi.org/10.1519/0744-0049(1993)015<0070:lsqeai>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

5

Lendrem, Dennis W., i B. Clare Lendrem. "The development speed paradox: can increasing development speed reduce R&D productivity?" Drug Discovery Today 19, nr 3 (marzec 2014): 209–14. http://dx.doi.org/10.1016/j.drudis.2013.09.002.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

6

이숭봉, Young-Ihn Lee, Kiyoung Lee i 장현호. "Development of Speed Estimation Model under Variable Speed Limit". Journal of Transport Research 22, nr 1 (marzec 2015): 1–14. http://dx.doi.org/10.34143/jtr.2015.22.1.1.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

7

McFadden, John, i Lily Elefteriadou. "Evaluating Horizontal Alignment Design Consistency of Two-Lane Rural Highways: Development of New Procedure". Transportation Research Record: Journal of the Transportation Research Board 1737, nr 1 (styczeń 2000): 9–17. http://dx.doi.org/10.3141/1737-02.

Pełny tekst źródła

Streszczenie:

Design consistency refers to the condition wherein the roadway geometry does not violate driver expectations. Operating-speed profile models are used to evaluate the consistency of a design by identifying locations with large speed variability between successive design elements. There is a direct correlation between safety and variability in speeds. Recent operating-speed models predict the 85th percentile speeds on horizontal curves and compare this value with the expected 85th percentile speed on the approach tangent. There is a direct correlation between speed variability between successive design elements and crash rates. Eighty-fifth percentile speeds, however, do not necessarily represent the speed reductions experienced by drivers. The primary objective of the research was to assess the efficacy of the use of 85th percentile speed by operating-speed profile models to evaluate the consistency of a design. Speed data were collected at 21 horizontal curve sites. These data were used to evaluate the implication of using 85th percentile speed for evaluating design consistency. A new parameter was investigated for analyzing design consistency: the 85th percentile maximum reduction in speed (85MSR). This parameter is calculated by using each driver’s speed profile from an approach tangent through a horizontal curve and determining the maximum speed reduction each driver experiences. These maximum speed reductions are sorted, and the 85th percentile value becomes the statistic of interest, or 85MSR. 85MSR was compared with the difference in 85th percentile speeds (85S), and it was found that 85MSR is significantly larger than 85S. The data showed that, on average, 85MSR is approximately two times larger than 85S. Models were developed that predict 85MSR as a function of geometric design elements, and these models could be used to complement existing operating-speed models.

Style APA, Harvard, Vancouver, ISO itp.

8

Riddihough, G. "DEVELOPMENT: Trading Accuracy for Speed". Science 312, nr 5770 (7.04.2006): 22b. http://dx.doi.org/10.1126/science.312.5770.22b.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

9

Ikeda, H., i H. Inukai. "High-speed DRAM architecture development". IEEE Journal of Solid-State Circuits 34, nr 5 (maj 1999): 685–92. http://dx.doi.org/10.1109/4.760380.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

10

Gambetta, Vern. "FOOTBALL: Speed development for football". National Strength & Conditioning Association Journal 12, nr 1 (1990): 45. http://dx.doi.org/10.1519/0744-0049(1990)012<0045:sdff>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

11

Fawcett, B. K. "Tools to speed FPGA development". IEEE Spectrum 31, nr 11 (listopad 1994): 88–94. http://dx.doi.org/10.1109/6.328732.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

12

Lobier, Muriel, Matthieu Dubois i Sylviane Valdois. "The Role of Visual Processing Speed in Reading Speed Development". PLoS ONE 8, nr 4 (4.04.2013): e58097. http://dx.doi.org/10.1371/journal.pone.0058097.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

13

Morrow, Lee J. "SPEED DEVELOPMENT: Single leg strength: Its relationship to speed enhancement". National Strength & Conditioning Association Journal 8, nr 5 (1986): 64. http://dx.doi.org/10.1519/0744-0049(1986)008<0064:slsirt>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

Xiao, M. H., L. B. Yu, G. H. Li i W. J. Liang. "Development of High Speed Precision Press and its Development Trends". Key Engineering Materials 693 (maj 2016): 89–92. http://dx.doi.org/10.4028/www.scientific.net/kem.693.89.

Pełny tekst źródła

Streszczenie:

High speed press is precision mechanical presses, with automatic feeding device, which has automatic, high-speed, precision three basic elements. This paper first describes the characteristics of the different definitions of high-speed presses and the characteristics of the object suitable for processing parts. Then the research status of high speed precision press at home and abroad was analyzed, and the development trend of high-speed precision presses was investigated.

Style APA, Harvard, Vancouver, ISO itp.

15

Onuoha, S. N., M. A. Enaboifo i R. Ibrahim. "Development of cowpea thresher". Nigerian Journal of Technology 41, nr 2 (2.06.2022): 385–95. http://dx.doi.org/10.4314/njt.v41i2.21.

Pełny tekst źródła

Streszczenie:

A cowpea thresher that uses petrol engine was developed to overcome drudgery of threshing with manually operated thresher and also to replace motorized cowpea thresher that cannot be used in areas where there is no supply of electricity. The performance tests on the machine were replicated three times using 10000, 8000 and 6000 grams of kannanado cowpea pods at the threshing cylinder speed of 700, 800 and 900 rpm each and moisture contents of 11.05%, 13.65% and 14.75% respectively based on the following parameters; Threshing efficiency, throughput capacity and percentage seed damage. The findings of the tests showed that the thresher had highest threshing efficiency of 98% at moisture content of 11.05%, threshing cylinder speed of 900 rpm and feed rate of 6 kg/hr. The maximum throughput capacity was observed to be 46.18 kg/hr at the feed rate of 10 kg/hr, 11.05% grain moisture content and threshing cylinder speed of 900 rpm. A highest cleaning efficiency and grain damage of 93.06% and 4.90% respectively were observed. This revealed that as the cylinder speed increased the threshing and cleaning efficiency and the throughput capacity also increased whereas feed rate and moisture content were decreased. The test also showed that high moisture content has a tendency to reduce the mechanical seed damage for the variety (kannanado) of cowpea investigated. Therefore, cowpea moisture contents of 11.05 % and threshing cylinder speeds of 900 rpm are the crop-machine parameters combination for optimum thresher performance. The performance of the machine is satisfactory; small-scale farmers will find more comfort in using it for threshing.

Style APA, Harvard, Vancouver, ISO itp.

16

Li, Zimo. "Analysis Of the Development History, Key Technologies, And Future Development of Integrated Circuits". Highlights in Science, Engineering and Technology 81 (26.01.2024): 313–17. http://dx.doi.org/10.54097/bbqvc047.

Pełny tekst źródła

Streszczenie:

Integrated circuits (ICs) are pivotal in propelling the advancement of contemporary human technology. This article delves into the definition and evolution of integrated circuits, while also examining various collaborative technologies. Notable among these are EDR technology, VLSI testing technology, and High-Speed signal integrity testing assurance technology. The roots of integrated circuits can be traced back to their inception, with innovations occurring at a rapid pace over the years. EDR technology, for instance, has been instrumental in enhancing the efficiency of ICs by enabling data transmission at high speeds. Similarly, VLSI testing technology has played a crucial role in ensuring the reliability and quality of ICs. High-Speed signal integrity testing assurance technology has emerged as a fundamental aspect of IC development, ensuring that signals remain stable and accurate even at high speeds. These collaborative technologies have propelled ICs to new heights, paving the way for more powerful and efficient electronic devices. Furthermore, this article explores the challenges and prospects associated with integrated circuits on both a national and global scale.

Style APA, Harvard, Vancouver, ISO itp.

17

Wenzel, Ralph R., i Eleanor M. Perfetto. "The Effect of Speed Versus Non-speed Training in Power Development". Journal of Strength and Conditioning Research 6, nr 2 (maj 1992): 82–87. http://dx.doi.org/10.1519/00124278-199205000-00003.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

18

Green, Kimberly M. ""Knowledge Utilization, Development Speed, and Discontinue Speed for New Product Initiatives"". Academy of Management Proceedings 2014, nr 1 (styczeń 2014): 16583. http://dx.doi.org/10.5465/ambpp.2014.16583abstract.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

19

Wenzel, Ralph R., i Eleanor M. Perfetto. "The Effect of Speed Versus Non-speed Training in Power Development". Journal of Strength and Conditioning Research 6, nr 2 (1992): 82. http://dx.doi.org/10.1519/1533-4287(1992)006<0082:teosvn>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

20

Hillis, Tracy L., i Shawn Holman. "The Relationship between Speed and Technical Development in Young Speed Skaters". International Journal of Sports Science & Coaching 9, nr 2 (kwiecień 2014): 393–400. http://dx.doi.org/10.1260/1747-9541.9.2.393.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

21

McFarlane, Brent. "SPEED DEVELOPMENT: A Look Inside the Biomechanics and Dynamics of Speed". National Strength & Conditioning Association Journal 9, nr 5 (1987): 35. http://dx.doi.org/10.1519/0744-0049(1987)009<0035:alitba>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

22

Stern, William H. "SPEED DEVELOPMENT: Developing the calves to increase speed and jumping ability". National Strength & Conditioning Association Journal 13, nr 3 (1991): 46. http://dx.doi.org/10.1519/0744-0049(1991)013<0046:dtctis>2.3.co;2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

23

Ryazanov, Anton, i Mikhail Bogdanov. "Volleyball players speed-strength abilities development". Tambov University Review. Series: Humanities, nr 178 (2019): 53–59. http://dx.doi.org/10.20310/1810-0201-2019-24-178-53-59.

Pełny tekst źródła

Streszczenie:

Volleyball-one of the team games, where muscle work is mostly presented by speed-power and coordination. Speed-strength training of volleyball players is solved by means of specialization and individualization of preparation methods, optimization of correlation physical and technical training, taking into account age features, a condition and preparedness of volleyball players that causes need of carrying out additional researches. The purpose of the study: to develop and test in practice the effectiveness of development methods of speed-strength abilities of volleyball players volleyball club “Tambov” in the preparation period. The following tasks are to be solved: 1) to determine the tests to assess of volleyball players speed-strength abilities; 2) to work out a methodology for the development of speed-strength abilities of volleyball players in the preparation period; 3) to test experimentally the effectiveness of the developed technique. Re-search methods: analysis and generalization of scientific and methodical literature; pedagogical observations; testing of speed-power abilities (control tests); pedagogical experiment; mathemati-cal and statistical methods of information processing. Analysis of the experiment results allowed to establish an increase in the speed-strength abilities, reflecting the height of the jump – by 12 %; in indicators, reflecting the speed of movement – by 2 %; in indicators, reflecting the explosive force – by 8 %.

Style APA, Harvard, Vancouver, ISO itp.

24

Choon, Tan Wee, Churia Prakash, Lim Eng Aik i Teoh Thean Hin. "Development of Low Wind Speed Anemometer". International Journal on Advanced Science, Engineering and Information Technology 2, nr 3 (2012): 237. http://dx.doi.org/10.18517/ijaseit.2.3.194.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Norhayati, Ibrahim, Khairudin Zulkhairi i M. Sahak Z. Rohaiza. "DEVELOPMENT OF HIGH SPEED PAINT MIXER". MATTER: International Journal of Science and Technology 6, nr 2 (19.10.2020): 119–31. http://dx.doi.org/10.20319/mijst.2020.62.119131.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Euchner, Jim. "The Speed of New Product Development". Research-Technology Management 64, nr 5 (19.08.2021): 9–10. http://dx.doi.org/10.1080/08956308.2021.1949934.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

27

KROSTA, ROKSANA, MILOSZ DROZD, ROBERT GORALCZYK, MACIEJ KOSTRZEWA, PATRICIA FISCHEROVA i ANGELINA IGNATIEVA. "Models of speed development in soccer". Baltic Journal of Health and Physical Activity 12, nr 2 (30.06.2020): 27–34. http://dx.doi.org/10.29359/bjhpa.12.2.04.

Pełny tekst źródła

Streszczenie:

Background: ‪The main objective of this research was to determine a model of the Speed Abilities Development Index (SADI) in selected teams of the top league, the first and the second league in Poland. The indirect aim was to determine the most significant predictors that have the greatest effect on development of this model. Material and methods: ‪The study examined a group of randomly selected 20 athletes (age 24 ± 3years) from four Polish premium league soccer teams, four teams of the first league and four teams of the second league, what amounted to 60 randomly selected players. The following independent variables related to starting and absolute running were considered: 5 m, 20 m, 30 m, 520 m, 530 m, 2030 m. Results: I‪n the group of top league players the model determined the following predictors of speed as most significant: the sprint time of 5 to 30 m segment run, the sprint time recorded between 20 to 30 m and the mean result of the RAST. In the group of players from the first and second leagues, the predictors included: the time of 20 to 30 m run, mean result of the RAST and the sprint time of the 5 m run. Conclusions: ‪A good soccer player should be prepared for both short (5 to 20 m) and longer (30 to 50 m) runs at the highest speed possible.

Style APA, Harvard, Vancouver, ISO itp.

28

Sugihara, Masahiro, Kenji Yamada, Hiroshi Miura i Toshiaki Miyakura. "Development of Mitsubishi High Speed Coater". JAPAN TAPPI JOURNAL 55, nr 4 (2001): 428–34. http://dx.doi.org/10.2524/jtappij.55.428.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

29

Baskerville, R., B. Ramesh, L. Levine, J. Pries-Heje i S. Slaughter. "Is internet-speed software development different?" IEEE Software 20, nr 6 (listopad 2003): 70–77. http://dx.doi.org/10.1109/ms.2003.1241369.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

SEMBA, Takuya, Naoki TOMITA i Shinichi FUJII. "Development of High-Speed Electroforming Technique." Transactions of the Japan Society of Mechanical Engineers Series C 69, nr 679 (2003): 773–79. http://dx.doi.org/10.1299/kikaic.69.773.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Hertegård, Stellan, Hans Larsson i Thomas Wittenberg. "High-speed imaging: applications and development". Logopedics Phoniatrics Vocology 28, nr 3 (styczeń 2003): 133–39. http://dx.doi.org/10.1080/14015430310015246.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

32

Warriner, J. F., i D. L. Westerling. "Medium-Speed Engine Bearings—Development Experience". Journal of Engineering for Gas Turbines and Power 113, nr 3 (1.07.1991): 331–39. http://dx.doi.org/10.1115/1.2906234.

Pełny tekst źródła

Streszczenie:

After a brief history of the introduction of galvanically applied overlays to the surface of thin-walled half-bearings, the paper goes on to describe experiences in service engines. This shows that from the mid-1970s, overlay life could be sharply reduced due to a variety (or combination) of factors. These are described, the possible causes explained, and various palliatives investigated. The principle factor in the mid-1970s was the rapid rise in the use of lower quality heavy fuels initiated by escalating oil costs. The consequence of using these fuels was often rapid overlay loss, which in turn resulted in further problems, particularly: large areas of exposed nickel interlay, corrosion of the overlay, and/or corrosion of the base lining material. Four palliatives, elimination of the overlay, harder overlays, elimination of the interlayer, and modified surface topography are described and results of development testing and field service experience are presented.

Style APA, Harvard, Vancouver, ISO itp.

33

BORMAN, STU. "Criteria may speed AIDS vaccine development". Chemical & Engineering News 74, nr 8 (19.02.1996): 9. http://dx.doi.org/10.1021/cen-v074n008.p009.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

34

Manning, Catherine, David Aagten-Murphy i Elizabeth Pellicano. "The development of speed discrimination abilities". Vision Research 70 (październik 2012): 27–33. http://dx.doi.org/10.1016/j.visres.2012.08.004.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Vos, Johan, i Haneen Farah. "Speed development at freeway curves based on high frequency floating car data". European Journal of Transport and Infrastructure Research 22, nr 2 (24.06.2022): 201–23. http://dx.doi.org/10.18757/ejtir.2022.22.2.6114.

Pełny tekst źródła

Streszczenie:

Road designers need to have insights where deceleration and acceleration are expected related to the position of the curve, and in in which amount so that drivers are able to safely decelerate and accelerate respectively into and out of a freeway curve. For this, empirical speed data is needed. Therefore, Floating Car Data in 153 curves in The Netherlands were collected at a resolution of 1 Hz and were filtered on free-flow periods, to analyse over 800 thousand unique continuous free-flow speed observations on these curves. Regression models were developed to predict speed development, including deceleration and acceleration behaviour upon entering and exiting freeway curves. The models rely on easy to generate geometric design variables, including the start and end position of the horizontal curve, the horizontal radius and the number of lanes. Using these variables, the designer can predict the speed development based on the 85th percentile of speed and acceleration, relative to the position of the curve. The regression models reveal strong goodness-of-fit of the predicted 85th percentiles of speed in a curve, showing acceleration and deceleration inside the curve, and higher predicted 85th percentile speeds than the design speeds. The models also show satisfying results in speed development prediction in sets of consecutive curves with different characteristics, as well as deceleration when entering a first curve and acceleration when exiting a last curve. These insights are valuable in evaluating road design in relation to traffic safety based on its predicted use.

Style APA, Harvard, Vancouver, ISO itp.

36

Vakulenko, S. P., D. Yu Romensky i K. A. Kalinin. "Typification of Projects for Development of High-Speed Rail". World of Transport and Transportation 21, nr 3 (17.11.2023): 85–94. http://dx.doi.org/10.30932/1992-3252-2023-21-3-8.

Pełny tekst źródła

Streszczenie:

The emerging demand for improving consumer parameters of rail passenger transport leads to the need to build a dedicated railway infrastructure for passenger trains with speeds exceeding in some sections 250 km/h. The high capital intensity of dedicated infrastructure development projects imposes significant restrictions on their scope and financial feasibility. The geographically determined location of urban agglomerations in European and Asian countries has led to formation of many approaches to the routing of lines for high-speed passenger transportation.The projects for development of dedicated high-speed railways being developed in various countries differ in their technical, technological, and operational characteristics. The use of different approaches has led to different efficiency of the passenger traffic, expressed in the demand of passengers for transportation.A structural analysis of existing high-speed transportation projects allowed revealing general patterns of their development. By the number of operational tasks arising with regard to movement of trains, the phases of traffic development were divided into linear, treelike and network stages. Thus, when moving from the linear structure of a high-speed rail, an additional problem arises of trains passing from the main track to the secondary one. The transition to the network stage can result in emergence of parallel passages rail tracks between urban agglomerations.To generalise the experience of operating high-speed systems in the world, the article describes the developed method that allows comparing different projects for organising high-speed rail with each other. The comparison is made according to the main characteristics of traffic: travel time between separation points, the traffic speed, the total length of the railway line. Identification of the patterns inherent in various projects for development of high-speed rail will make it possible to compare their technological parameters, to identify the scope of rational use of high-speed lines and areas of competition with other core types of transport.

Style APA, Harvard, Vancouver, ISO itp.

37

Mitin, I. V., R. A. Korotaev, V. I. Mironov, S. A. Lobov i V. B. Kazantsev. "Development of the bioinspired propulsion system for a robotic fish". Genes & Cells 18, nr 4 (15.12.2023): 866–69. http://dx.doi.org/10.17816/gc623480.

Pełny tekst źródła

Streszczenie:

Biomimetic robots aim to replicate the movement principles of living creatures, which have been continuously perfected by nature to ensure survival. Technically, survival comprises two factors: optimizing movement efficacy, such as speed, distance traveled, or acceleration, and minimizing energy consumption during movement. Researchers have made several attempts to develop a biomimetic fish robot [1–3]. Tunas are a group of fish with numerous evolutionary adaptations that make them exceptional swimmers, including tail shape, lateral peduncle keels, pectoral fin shape, and finlets. Thunniform locomotion is characterized by limited undulation, typically restricted to the rear one-third of the body, with maximal amplitude reached at the end of the tail peduncle. A bioinspired propulsion system was developed for a robotic fish model. It is based on the combination of an elastic cord with a tail fin that is firmly attached to the cord. Two symmetric movable thrusts that simulate muscle contractions connect the tail fin to a servomotor. The propulsion system provides oscillatory tail movement that can be controlled for amplitude and frequency. This movement translates to the movement of the robotic fish, which executes the thunniform principle of locomotion. The body and tail fin of the robotic fish were designed using a computational model that simulates a virtual body in water. Subsequently, we constructed a prototype of the robotic fish and tested it under experimental conditions. Experiments were conducted to investigate the relationship between the robot’s kinematics and the dynamic parameters of the propulsion system. The results showed that increasing the frequency of tail fin oscillations led to an increase in the robot’s speed. At fixed frequencies, there was an interval of energetically efficient travel speeds up to a threshold velocity. Movement at higher speeds was achievable; however, it was accompanied by greater power consumption. The conclusion aligns with the data from COT studies on living tunas, indicating qualitative agreement. However, the robot’s values were quantitatively higher. Our robotic fish reached a maximum speed of approximately 0.4 BL/s, exceeding speeds in other works where a simplified tail section was used (0.22 BL/s [4], 0.254 BL/s [5]). Our study demonstrated a correlation between the efficiency of robot swimming and amplitude, which was previously unexplored in addition to previous findings on the relationship between tail beat frequency and swimming speed, as well as the dependence of frequency and swimming speed. The results showed that increasing the oscillation amplitude of the propulsion system, at a fixed frequency, only led to a rise in swimming speed up to a certain threshold. However, further increases in amplitude resulted in minimal speed increases at higher energy costs. An evaluation of energy efficiency was conducted, assessing its dependence on dynamic parameters of tail oscillation. The results show that the transport cost rises as the tail amplitude rises beyond the threshold. Furthermore, it was found that for a fixed frequency, an interval of energetic preferred speeds up to a threshold exists. Although moving at a higher speed is possible, it consumes more power. In general, it is preferable to increase caudal fin oscillation frequency rather than amplitude to increase swimming speed. These findings are in qualitative accordance with the outcomes of the numerical simulation of thunniform swimming.

Style APA, Harvard, Vancouver, ISO itp.

38

Lu, Chun-fang. "A discussion on technologies for improving the operational speed of high-speed railway networks". Transportation Safety and Environment 1, nr 1 (1.07.2019): 22–36. http://dx.doi.org/10.1093/tse/tdz003.

Pełny tekst źródła

Streszczenie:

Abstract: China’s high-speed railway network has already achieved speeds of 350 km/h; however, this could be further increased to 400 km/h. After considering the development status and technical level of the high-speed railway system in China, this study indicates that there are four key technologies involved in improving its operational speed: the track, the electrical moving unit, the control system and the traction power supply. Through an experimental analysis, an evaluation index for the high-speed railway is then constructed based on four aspects: safety, comfort, intelligence and environmental protection. Using this system, the rationality of the high-speed railway speed-improvement plan can be scientifically evaluated. The results are of practical significance to the Chinese railway administration, as they can be used to formulate specific plans to increase rail speeds, and therefore promote the rapid development of the high-speed railway network in China.

Style APA, Harvard, Vancouver, ISO itp.

39

Lyshevska, Valentyna, i Serhiy Shepoval. "Serological Markers in the Prognosis of the Development of Human Speed Abilities". PHYSICAL EDUCATION, SPORTS AND HEALTH CULTURE IN MODERN SOCIETY, nr 4 (2017): 53–59. http://dx.doi.org/10.29038/2220-7481-2017-04-53-59.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

40

Wilson, A. G., i C. Freeman. "Stall Inception and Development in an Axial Flow Aeroengine". Journal of Turbomachinery 116, nr 2 (1.04.1994): 216–25. http://dx.doi.org/10.1115/1.2928356.

Pełny tekst źródła

Streszczenie:

This paper describes the phenomenon of stall and surge in an axial flow aeroengine using fast response static pressure measurements from the compressor of a Rolls-Royce VIPER engine. It details the growth of flow instability at various speeds, from a small zone of stalled fluid involving only a few blades into the violent surge motion of the entire machine. Various observations from earlier theoretical and compressor rig results are confirmed by these new engine measurements. The main findings are as follows: (1) The point of stall inception moves rearward as engine speed increases, and is shown to be simply related to the axial matching of the compressor. (2) The final unstable operation of the machine can be divided into rotating stall at low speed and surge or multiple surge at high speed. (3) The inception process is independent of whether the final unstable operation is rotating stall or multiple surge. (4) Stall/surge always starts as a circumferentially small flow disturbance, rotating around the annulus at some fraction of rotor speed.

Style APA, Harvard, Vancouver, ISO itp.

41

Rykov, S., A. Burdei, O. Petrenko, S. Mogilevskyy i L. Denisyuk. "Speed of development and speed of progression of primary open-angle glaucoma". Oftalmologicheskii Zhurnal 76, nr 5 (26.10.2018): 20–25. http://dx.doi.org/10.31288/oftalmolzh201852025.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

42

Hilmersson, Mikael, i Martin Johanson. "Knowledge acquisition strategy, speed of capability development and speed of SME internationalisation". International Small Business Journal: Researching Entrepreneurship 38, nr 6 (16.04.2020): 536–56. http://dx.doi.org/10.1177/0266242620909029.

Pełny tekst źródła

Streszczenie:

From a study following two sequential on-site data collection stages at 618 internationalising SMEs in Sweden, Poland and China, we identify and validate four distinct international knowledge acquisition strategies. In contrast to traditional theories suggesting that firms develop capabilities by generating their own experience, we show that Grafters and Pragmatists have a higher speed of international capability development than Experiencers and Networkers. Subsequently, by drawing on capability development theory, we show that the speed of capability development has a curvilinear (inverted U-shaped) effect on the speed of spread between international markets. These findings have consequences both for practitioners and theory.

Style APA, Harvard, Vancouver, ISO itp.

43

Maryani, Dedeh, i Zainal Abidin. "JAKARTA-BANDUNG HIGH-SPEED TRAIN INFRASTRUCTURE DEVELOPMENT". Jurnal Ilmiah Administrasi Pemerintahan Daerah 14, nr 1 (30.06.2022): 162–79. http://dx.doi.org/10.33701/jiapd.v14i1.2731.

Pełny tekst źródła

Streszczenie:

In accelerating economic growth, Indonesia is actively implementing infrastructure development. One of the developments currently underway is the construction of the Jakarta-Bandung high-speed train infrastructure. Jakarta as the nation's capital and Bandung as the capital city of West Java Province as a buffer for the capital city have high mobility in the use of transportation means including trains. To support the business activities between the two cities, the government considers the development of high-speed train infrastructure as a priority development. Due to the limited Indonesian Budget, Indonesia decided to collaborate with the Chinese government in its development and financing. However, the implementation of the construction of the Jakarta-Bandung high-speed train infrastructure is not simple, because it involves various stakeholders, including the Central Government, the Chinese Government, the West Java Provincial Government, the Regency/City Governments that the high-speed train line passes, and the people. This study aims to describe the implementation of collaboration among all stakeholders. The research method used is qualitative descriptive. The results of this study indicate that there are still various technical obstacles faced so that the implementation of the Jakarta-Bandung high-speed train infrastructure development runs slowly. The right collaboration model found to be applicable in infrastructure development is the Transnational Model.

Style APA, Harvard, Vancouver, ISO itp.

44

Kazanskaya, Liliya F., i Natalia V. Batalova. "Innovative technologies in the development of high-speed ground transport". Modern Transportation Systems and Technologies 9, nr 4 (25.12.2023): 108–16. http://dx.doi.org/10.17816/transsyst202394108-116.

Pełny tekst źródła

Streszczenie:

Aim: is a comparative analysis of the technical and economic characteristics of various types of land rail transport. Methods: comparative analysis, structuring of high-speed traffic processes, logical analysis of the cause-and-effect organization of the high-speed highways, made it possible to formalize the technical advantages of maglev transport technology in comparison with the construction of high-speed highways. Results: A key trend has been identified to increase traffic speeds, requiring the convergence of various transport systems. The main criteria for innovative high-speed ground transport systems are classified. It is substantiated that increasing the level of technical characteristics of innovative technologies in the development of high-speed ground transport will allow maglev transport to become a key link in multimodal transport corridors. A comparison of the technical and economic characteristics of various types of land railway transport confirms that the introduction of MLTT into the transport complex will be able to significantly influence the matrix of the transport industry and accumulate both the passenger flow of air and rail traffic, as well as part of the containerized cargo, and become a key link in the multimodal transport corridors of the Russian Federation. Conclusion: The conclusions are based on a representative sample of data on the innovative, technological and economic parameters of two high-speed rail construction technologies: wheel-rail and magnetic levitation.

Style APA, Harvard, Vancouver, ISO itp.

45

SUGIYAMA, Yoshiki. "Development Process of Products. Development of Super-high Speed Elevators." Journal of the Japan Society for Precision Engineering 61, nr 1 (1995): 23–28. http://dx.doi.org/10.2493/jjspe.61.23.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

46

Alfaro, Iván, i Ranganathan Chandrasekaran. "Software Quality and Development Speed in Global Software Development Teams". Business & Information Systems Engineering 57, nr 2 (28.02.2015): 91–102. http://dx.doi.org/10.1007/s12599-015-0372-6.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

47

Lv, Letian, Yanmin Zhang, Yunhua Wang, Wenzheng Jiang i Daozhong Sun. "Development of a New Tropical Cyclone Strip Segment Retrieval Model for C-Band Cross-Polarized SAR Data". Remote Sensing 14, nr 7 (29.03.2022): 1637. http://dx.doi.org/10.3390/rs14071637.

Pełny tekst źródła

Streszczenie:

Compared with co-polarized (HH/VV) normalized radar cross-section (NRCS) backscattered from the sea surface, there is no saturation phenomenon in cross-polarized (HV/VH) NRCS when wind speed is greater than about 20 m/s, so cross-polarized synthetic aperture radar (SAR) images can be used for high wind speed monitoring. In this work, a new geophysical model function (GMF) is proposed to describe the relation of the C-band cross-polarized NRCS with wind speed and radar incidence angle. Here, sixteen ScanSAR wide mode SAR images acquired by RADARSAT-2 (RS-2) under tropical cyclone (TC) conditions and the matching wind speed data from the European Centre for Medium-Range Weather Forecasts (ECMWF) and the Stepped-Frequency Microwave Radiometer (SFMR) are collected and divided into datasets A and B. Dataset A is used for analyzing the effects of the wind field and radar incidence angle on the reference noise-removed cross-polarized NRCS, and for proposing the new GMF for each sub-swath of the SAR images, while dataset B is used to retrieve wind speed and evaluate the validity of the new GMF. The comparisons between the wind speeds retrieved by the new GMF and the collocated ECMWF and SFMR data demonstrate the excellent performance of the new GMF for wind speed retrieval. To analyze the universality of the new GMF, wind speed retrievals based on 32 Sentinel-1A/B (S-1A/B) extra-wide-swath (EW) mode images acquired under TC conditions are also compared with the collocated wind speeds measured by the Soil Moisture Active Passive (SMAP) radiometer, and the retrieved wind speeds have RMSE of 3.667 m/s and a bias of 2.767 m/s. The successful applications in high wind speed retrieval of different tropical cyclones again supports the availability of the new GMF.

Style APA, Harvard, Vancouver, ISO itp.

48

Pamungkas, Wahyu, Nunung Sadtomo i Erlinda Febrianingtyas. "Analisis Kualitas Jaringan Akses Tembaga Terhadap Layanan Speedy Studi Kasus Di PT.Telkom,Tbk Divisi Access Site Operation Purwokerto". JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 4, nr 2 (10.11.2012): 23. http://dx.doi.org/10.20895/infotel.v4i2.105.

Pełny tekst źródła

Streszczenie:

The development of fast evolving telecomunication technologies starting from communications cable to wireless communications. One of the communication cable for data is a technology Asymetric Digital Subscriber Line (ADSL). ADSL technology is an access technology that enable data communications, voice and video simultaneously at cooper access network media. Speedy service is one example of the use of ADSL technology. Telkom Speedy offers internet access speeds ranging from 384 Kbps for downstream speed and 3 Mbps for upstream speed. Speed of access internet is affected by the quality of the network. Parameters that effect the quality of network are : attenuation, Signal to Noise Ratio (SNR), Packet Loss, Bit Error Ratio (BER), jitter and time to life (TTL). In this study analysis of network quality affected by these parameters were measured advance to the quality of the network by using the EMBASSY software, while the perform measurements speedtest by using internal web aplications PT.Telkom,Tbk. After measurement is complete then performed the analysis for determine network quality. Based on observations can be known on the upload and download speed the capacity of 384 Kbps, 1024 Kbps and 3 Mbps. Of these three on capacity can be known to the average percentage of the upload speed is found to be 83,33 %, while the percentage of download speeds is found to be 76,67 %

Style APA, Harvard, Vancouver, ISO itp.

49

Mattox, James H., Wayne A. Sarasua, Jennifer H. Ogle, Ryan T. Eckenrode i Anne Dunning. "Development and Evaluation of Speed-Activated Sign to Reduce Speeds in Work Zones". Transportation Research Record: Journal of the Transportation Research Board 2015, nr 1 (styczeń 2007): 3–11. http://dx.doi.org/10.3141/2015-01.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

50

Wang, Chong, Qun Sun i Limin Xu. "Development of an Integrated Cooling System Controller for Hybrid Electric Vehicles". Journal of Electrical and Computer Engineering 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/2605460.

Pełny tekst źródła

Streszczenie:

A hybrid electrical bus employs both a turbo diesel engine and an electric motor to drive the vehicle in different speed-torque scenarios. The cooling system for such a vehicle is particularly power costing because it needs to dissipate heat from not only the engine, but also the intercooler and the motor. An electronic control unit (ECU) has been designed with a single chip computer, temperature sensors, DC motor drive circuit, and optimized control algorithm to manage the speeds of several fans for efficient cooling using a nonlinear fan speed adjustment strategy. Experiments suggested that the continuous operating performance of the ECU is robust and capable of saving 15% of the total electricity comparing with ordinary fan speed control method.

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!