Увійти

Готові списки джерел за темами / Space mechanism in-flight testing / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Space mechanism in-flight testing.

Статті в журналах з теми "Space mechanism in-flight testing"

Автор: Grafiati

Опубліковано: 11 березня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-50 статей у журналах для дослідження на тему "Space mechanism in-flight testing".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Taylor, Gerald R., and Robert P. Janney. "In vivo testing confirms a blunting of the human cell-mediated immune mechanism during space flight." Journal of Leukocyte Biology 51, no. 2 (1992): 129–32. http://dx.doi.org/10.1002/jlb.51.2.129.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Huber, F. W., P. D. Johnson, O. P. Sharma, J. B. Staubach, and S. W. Gaddis. "Performance Improvement Through Indexing of Turbine Airfoils: Part 1—Experimental Investigation." Journal of Turbomachinery 118, no. 4 (1996): 630–35. http://dx.doi.org/10.1115/1.2840918.

Повний текст джерела

Анотація:

This paper describes the results of a study to determine the performance improvements achievable by circumferentially indexing successive rows of turbine stator airfoils. An experimental/analytical investigation has been completed that indicates significant stage efficiency increases can be attained through application of this airfoil clocking concept. A series of tests was conducted at the National Aeronautics and Space Administration’s (NASA) Marshall Space Flight Center (MSFC) to experimentally investigate stator wake clocking effects on the performance of the Space Shuttle Main Engine Alte

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Z˙bikowski, Rafał, Cezary Galin´ski, and Christopher B. Pedersen. "Four-Bar Linkage Mechanism for Insectlike Flapping Wings in Hover: Concept and an Outline of Its Realization." Journal of Mechanical Design 127, no. 4 (2005): 817–24. http://dx.doi.org/10.1115/1.1829091.

Повний текст джерела

Анотація:

This paper describes the concept of a four-bar linkage mechanism for flapping wing micro air vehicles and outlines its design, implementation, and testing. Micro air vehicles (MAVs) are defined as flying vehicles ca. 150 mm in size (handheld), weighing 50–100 g, and are developed to reconnoiter in confined spaces (inside buildings, tunnels, etc.). For this application, insectlike flapping wings are an attractive solution and, hence, the need to realize the functionality of insect flight by engineering means. Insects fly by oscillating (plunging) and rotating (pitching) their wings through larg

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Merriam, E. G., J. E. Jones, S. P. Magleby, and L. L. Howell. "Monolithic 2 DOF fully compliant space pointing mechanism." Mechanical Sciences 4, no. 2 (2013): 381–90. http://dx.doi.org/10.5194/ms-4-381-2013.

Повний текст джерела

Анотація:

Abstract. This paper describes the conception, modeling, and development of a fully compliant two-degree-of-freedom pointing mechanism for application in spacecraft thruster, antenna, or solar array systems. The design objectives and the advantages of a compliant solution are briefly discussed. Detailed design decisions to meet project objectives are described. Analytical and numerical models are developed and subsequently verified by prototype testing and measurements in several iterations. A final design of the 3-D printed titanium monolithic pointing mechanism is described in detail and its

Стилі APA, Harvard, Vancouver, ISO та ін.

5

ZHAO Hai-bo, 赵海波, 赵伟国 ZHAO Wei-guo, 董吉洪 DONG Ji-hong, et al. "Accuracy analysis and testing for secondary mirror adjusting mechanism in large space telescope." Optics and Precision Engineering 27, no. 11 (2019): 2374–83. http://dx.doi.org/10.3788/ope.20192711.2374.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Michaels, Dan, and Alon Gany. "Modeling and testing of a tube-in-tube separation mechanism of bodies in space." Acta Astronautica 129 (December 2016): 214–22. http://dx.doi.org/10.1016/j.actaastro.2016.09.013.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Wang, Junwei, Lei Zhang, Guohua Li, et al. "Research and Verification of Key Techniques in the Simulation of Space Extremely Rapid Decompression in Millisecond." International Journal of Aerospace Engineering 2021 (April 5, 2021): 1–11. http://dx.doi.org/10.1155/2021/6634468.

Повний текст джерела

Анотація:

The research of rapid decompression with its effect assessment and protection technology is the problem that must be faced by the future exploration projects such as near space exploration, deep space exploration, and long-term lunar or Mars base. A new reusable quick opening mechanism which can be opened in millisecond is designed to meet the testing requirement of ground simulator for extremely rapid decompression, and the testing results show that the quick opening mechanism can be opened within 0.1 s. The mathematical formulation is also developed, and the comparisons with the results from

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Hymer, W. C., R. E. Grindeland, T. Salada, P. Nye, E. J. Grossman, and P. K. Lane. "Experimental modification of rat pituitary growth hormone cell function during and after spaceflight." Journal of Applied Physiology 80, no. 3 (1996): 955–70. http://dx.doi.org/10.1152/jappl.1996.80.3.955.

Повний текст джерела

Анотація:

Space-flown rats show a number of flight-induced changes in the structure and function of pituitary growth hormone (GH) cells after in vitro postflight testing (W. C. Hymen, R. E. Grindeland, I. Krasnov, I, Victorov, K. Motter, P. Mukherjee, K. Shellenberger, and M. Vasques. J. Appl. Physiol. 73, Suppl.: 151S-157S, 1992). To evaluate the possible effects of microgravity on growth hormone (GH) cells themselves, freshly dispersed rat anterior pituitary gland cells were seeded into vials containing serum +/- microM hydrocortisone (HC) before flight. Five different cell preparations were used: the

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Konovalov, A. M., and V. I. Kugushev. "Mechanism of excitatioon of natural vibrations of fireclay products and its application in flaw detection." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 10 (November 25, 2022): 55–62. http://dx.doi.org/10.17073/1683-4518-2022-10-55-62.

Повний текст джерела

Анотація:

In this article, using the example of developing a technique for non-destructive testing of a fireclay product («asterisks») using the natural vibrations of the object of control, a mathematical model is presented that allows us to specifically describe the process of converting an external dynamic effect into the natural vibrations of the part. The peculiarity of the model is that, firstly, it is a carrier of the free energy of elastic deformation and the process of natural oscillations is formed in it. Secondly, the model is a Riemannian space in which all dynamic parameters are constant and

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Zhou, Hongming, Peiyuan Li, Longfei Wu, and Qiankun Gao. "A wavelet analysis-based matching pursuit algorithm for an accurate ultrasonic TOFD measurement." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 11 (2020): 662–68. http://dx.doi.org/10.1784/insi.2020.62.11.662.

Повний текст джерела

Анотація:

The time-of-flight diffraction (TOFD) technique is used as an important non-destructive testing method in weld integrity evaluation and failure analysis. However, an accurate measurement of the time-of-flight (TOF) has proven to be difficult due to the low time resolution of the measured signal. Conventional deconvolution techniques have been used to improve the time resolution of the signal but are not effective for ultrasonic TOFD signals because the frequency contents of the signals are non-static in space-frequency distribution. To overcome this problem, a method is proposed in this paper

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Phillips, W. M., and J. W. Stearns. "Alkali Metal/Halide Thermal Energy Storage Systems Performance Evaluation." Journal of Solar Energy Engineering 109, no. 3 (1987): 235–37. http://dx.doi.org/10.1115/1.3268212.

Повний текст джерела

Анотація:

Materials compatibility and durability of advanced salt/alkali metal slurry thermal energy storage systems has been demonstrated [1]. Applications are being evaluated for both space and terrestrial solar thermal power conversion [2]. High energy density of these thermal storage systems is achieved by colocation of heat input and extraction within the slurry mixture which is overwhelmingly phase-change salt. This paper addresses performance testing of these systems. Understanding of mechanisms of both micro and macro stratification of the slurry is necessary to fully predict system performance

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Fauzia, Marliana Eka. "Mengembalikan Tahapan Uji Publik Pada Pilkada." Jurnal Adhyasta Pemilu 3, no. 2 (2021): 121–40. http://dx.doi.org/10.55108/jap.v3i2.14.

Повний текст джерела

Анотація:

The writing of this article is intended to evaluate the urgency of revising the Pilkada Law, on eliminating public examination points. The DPR removed public test points in the revision of the Election Law No. 1 of 2015, and was replaced by the Election Law No. 8 of 2015. Until the current election law No. 10 of 2016 there has been no re-discussion regarding the stages of public testing. The public test is a stage of competency and integrity testing for candidates for regional head and representative in an open manner which is independently formed by the Provincial / Regency / City KPU. Public

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Berlin, M., N. Goossens, H. W. Oelze, and C. Braxmaier. "Launch lock system for reaction wheels." CEAS Space Journal 13, no. 4 (2021): 583–89. http://dx.doi.org/10.1007/s12567-021-00353-9.

Повний текст джерела

Анотація:

AbstractLaunch loads are critical forces to the payload. Many structures are not designed to survive these loads, thus, additional systems which absorb them are required. These launch lock mechanisms are available in different varieties. For a future magnetic bearing reaction wheel, two different principles of launch lock mechanism concepts were developed and tested. The first one is based on a spring mechanism, while the second uses electromagnetism to move the locking pins. A first testing with prototypes of both was conducted to evaluate the functionality. Subsequently improvements regardin

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Dündar-Coecke, Selma, Gideon Goldin, and Steven A. Sloman. "Causal reasoning without mechanism." PLOS ONE 17, no. 5 (2022): e0268219. http://dx.doi.org/10.1371/journal.pone.0268219.

Повний текст джерела

Анотація:

Unobservable mechanisms that tie causes to their effects generate observable events. How can one make inferences about hidden causal structures? This paper introduces the domain-matching heuristic to explain how humans perform causal reasoning when lacking mechanistic knowledge. We posit that people reduce the otherwise vast space of possible causal relations by focusing only on the likeliest ones. When thinking about a cause, people tend to think about possible effects that participate in the same domain, and vice versa. To explore the specific domains that people use, we asked people to clus

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Konovalov, A. M., and V. I. Kugushev. "MODEL OF MECHANISM OF CONVERSION OF EXTERNAL ACTION INTO NATURAL OSCILLATIONS." Kontrol'. Diagnostika, no. 281 (November 2021): 10–20. http://dx.doi.org/10.14489/td.2021.11.pp.010-020.

Повний текст джерела

Анотація:

The work presents a geometrical interpretation of a mathematical model intended to give a specific description of the process of conversion of external dynamic action into natural oscillations of a part. Besides geometrical constructions, the essence of the model stems from the strict logic as well, following which the model does not have a tangible embodiment. Nonetheless, it is a function space, in which the process is being generated and energy of natural oscillations is getting accumulated, i.e. the model is an non-material carrier of free energy of elastic oscillations. Material carrier i

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Du, Mei, Shuang-Xi Yi, Tong Liu, Cui-Ying Song, and Wei Xie. "Testing Blandford–Znajek Mechanism in Black Hole Hyperaccretion Flows for Long-duration Gamma-Ray Bursts." Astrophysical Journal 908, no. 2 (2021): 242. http://dx.doi.org/10.3847/1538-4357/abd6bd.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Kiener, Lionel, Hervé Saudan, Florent Cosandier, Gérald Perruchoud, and Peter Spanoudakis. "Innovative concept of compliant mechanisms made by additive manufacturing." MATEC Web of Conferences 304 (2019): 07002. http://dx.doi.org/10.1051/matecconf/201930407002.

Повний текст джерела

Анотація:

The complete redesign for Additive Manufacturing of compliant mechanism structures enables CSEM to develop innovative concepts to drastically reduce the need of machining and assembly after additive manufacturing. Support structures under flexure blades are thus minimised and the overall process becomes more streamlined. Moreover, this concept allows us to easily design and produce monolithic cross flexure pivots with interlocked flexible blades. Based on this concept, CSEM is now developing new architectures of Compliant Mechanisms based on Additive Manufacturing (COMAM) for the European Spac

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Sánchez, Jonatan, Antonio da Silva, Pablo Parra, Óscar R. Polo, Agustín Martínez Hellín, and Sebastián Sánchez. "ARINC653 Channel Robustness Verification Using LeonViP-MC, a LEON4 Multicore Virtual Platform." Electronics 10, no. 10 (2021): 1179. http://dx.doi.org/10.3390/electronics10101179.

Повний текст джерела

Анотація:

Multicore hardware platforms are being incorporated into spacecraft on-board systems to achieve faster and more efficient data processing. However, such systems lead to increased complexity in software development and represent a considerable challenge, especially concerning the runtime verification of fault-tolerance requirements. To address the ever-challenging verification of this kind of requirement, we introduce a LEON4 multicore virtual platform called LeonViP-MC. LeonViP-MC is an evolution of a previous development called Leon2ViP, carried out by the Space Research Group of the Universi

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Arcodia, R., A. Merloni, K. Nandra, and G. Ponti. "Testing the disk-corona interplay in radiatively-efficient broad-line AGN." Astronomy & Astrophysics 628 (August 2019): A135. http://dx.doi.org/10.1051/0004-6361/201935874.

Повний текст джерела

Анотація:

The correlation observed between monochromatic X-ray and UV luminosities in radiatively-efficient active galactic nuclei (AGN) lacks a clear theoretical explanation despite being used for many applications. Such a correlation, with its small intrinsic scatter and its slope that is smaller than unity in log space, represents the compelling evidence that a mechanism regulating the energetic interaction between the accretion disk and the X-ray corona must be in place. This ensures that going from fainter to brighter sources the coronal emission increases less than the disk emission. We discuss he

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Irwan, Y. M., A. R. Amelia, M. Irwanto, W. Z. Leow, Z. Syafiqah, and I. Safwati. "Influences of Hybrid Cooling Mechanism through PV System under Solar Simulator Testing." International Journal of Advances in Applied Sciences 6, no. 3 (2017): 213. http://dx.doi.org/10.11591/ijaas.v6.i3.pp213-220.

Повний текст джерела

Анотація:

An increasing efficiency of the solar system can be improved by using hybrid cooling mechanism. This paper presents the impact of hybrid cooling mechanism on PV panel under indoor testing with varying solar intensity. Thus, the fabrication of a solar simulator for indoor testing reacts as the space solar radiation is described. The performance of PV panel which attached to a hybrid cooling mechanism compared with PV panel without cooling mechanism under variation of average solar radiation. Experimental tests were carried out for various average solar radiations by varying the number of lamps

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Li, Dong, Shulin Liu, Furong Gao, and Xin Sun. "Continual learning classification method for time-varying data space based on artificial immune system." Journal of Intelligent & Fuzzy Systems 40, no. 5 (2021): 8741–54. http://dx.doi.org/10.3233/jifs-200044.

Повний текст джерела

Анотація:

Classification methods play an important role in many fields. However, they cannot effectively classify the samples from sample spaces that are varying with time, for they lack continual learning ability. A continual learning classification method for time-varying data space based on artificial immune system, CLCMTVD, is proposed. It is inspired by the intelligent mechanism that memory cells of the biological immune system can recognize and eliminate previous invaders when they attack again very fast and more efficiently, and these memory cells can evolve with the evolution of previous invader

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Hung, Chih Ching, Chi Chang Hsieh, Yan Huei Li, and Chyun Chau Lin. "LED Color Mixing Mechanism Design." Applied Mechanics and Materials 284-287 (January 2013): 2894–98. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2894.

Повний текст джерела

Анотація:

LED is the solid-state light source of the 21st century that ranges from white light to any color in the entire spectrum. LED lights create static or dynamic illumination in indoor lighting applications. Modern indoor lighting fixtures not only provide illumination, but also are the primary elements that create the atmosphere. The use of gradual mixing of lights or different colors not only makes lights fit more people’s physical and psychological needs, but also improve one’s aesthetic perspectives. However, the LED color mixing technique based on RGB colors requires the package of the RGB ch

Стилі APA, Harvard, Vancouver, ISO та ін.

23

., Tin Thein Thwel, and G. R. Sinha . "Efficient Data Deduplication Mechanism for Genomic Data." CSVTU International Journal of Biotechnology Bioinformatics and Biomedical 4, no. 2 (2019): 52–58. http://dx.doi.org/10.30732/ijbbb.20190402004.

Повний текст джерела

Анотація:

During the data science age, many people tend to access health concerned information and diagnosis using information technology, including telemedicine. Therefore, many researchers attempting to work with medical experts as well as bioinformatics area. In the bioinformatics field, handling the genomic data of human beings becomes essential such as collecting, storing and processing. Genomic data refers to the genome and DNA data of an organism. Unavoidably, genomic data require huge amount of storage for the customized software to analyze. Recently, genome researchers are rising the alarms ove

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Graham, Sean S., Wangyuan Zong, Jun Feng, and Shengping Tang. "Design and Testing of a Kiwifruit Harvester End-Effector." Transactions of the ASABE 61, no. 1 (2018): 45–51. http://dx.doi.org/10.13031/trans.12361.

Повний текст джерела

Анотація:

Abstract. Mechanisms to aid fruit harvesting are undergoing constant development with increasing available technologies. However, fruits grown on vines, such as kiwifruit, have complex tree architectures and present difficulties in confirming design parameters. The objective of this research was to develop an end-effector for a kiwifruit harvester based on integrating the physical characteristics of the fruit, such as stem length, the space between mature fruits, and the growing environment provided by a trellised system into the design. These properties contribute to developing a mechanism th

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Zhao, Guohua, Dan Wang, Liangbao Liu, Rui Fanand, and Rukun Mi. "Research on multidimensional loading device of material mechanical test." MATEC Web of Conferences 207 (2018): 03012. http://dx.doi.org/10.1051/matecconf/201820703012.

Повний текст джерела

Анотація:

A multidimensional loading device for the material mechanical test based on Stewart Platform was proposed and manufactured in this paper. A determination method of mechanism parameters toward specific engineering requirements was analysed via inverse kinematics and contact interference boundary condition of mechanism components. A set of optimized mechanism parameters was achieved and then the pose space was obtained. Meanwhile, five repeated quasi-static standard tensile tests were performed on the multidimensional loading device and the standard tensile testing machine, respectively. The ave

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Sartori, Igor, Synne Lien, Marius Bagle, Harald Walnum, and Benjamin Manrique. "Development and testing of load flexibility KPIs in the ZEN definition." E3S Web of Conferences 362 (2022): 13004. http://dx.doi.org/10.1051/e3sconf/202236213004.

Повний текст джерела

Анотація:

This paper discusses the flexibility KPIs proposed in the context of the Zero Emission Neighborhood (ZEN) definition for characterizing how a building or neighborhood exchanges energy with the surrounding energy system and presents preliminary results of testing them on single, archetype buildings. The KPIs are calculated as the deviation of a flexible load from a baseline, typical load. The results depend on the flexibility sources activated, as well as the flexibility drivers and flexibility goals deployed for the activation. It is shown how the mechanism of flexibility works and how the KPI

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Tufan, Ö., K. Arroyo Ohori, C. León-Sánchez, G. Agugiaro, and J. Stoter. "DEVELOPMENT AND TESTING OF THE CITYJSON ENERGY EXTENSION FOR SPACE HEATING DEMAND CALCULATION." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-4/W4-2022 (October 14, 2022): 169–76. http://dx.doi.org/10.5194/isprs-archives-xlviii-4-w4-2022-169-2022.

Повний текст джерела

Анотація:

Abstract. 3D city models are frequently used to acquire and store energy-related information of buildings for energy applications. In this context, CityGML is the most common data model, and the Energy ADE, one of its most complex extensions, provides a systematic way of storing detailed energy-related data in XML format. Contrarily, even though CityGML’s JSON-based encoding, CityJSON, has an extension mechanism, an energy-related CityJSON Extension is missing. This paper, therefore, presents the first results of the development of a CityJSON Energy Extension and space heating demand calculati

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Chakravarti, Arpita, K. Gowthamarajan, and Jayakumar Venkatesan. "A brief introduction to the universe of space medication." Journal of medical pharmaceutical and allied sciences 11, no. 2 (2022): 4770–76. http://dx.doi.org/10.55522/jmpas.v11i2.2946.

Повний текст джерела

Анотація:

In the present era, scientific explorations have crossed the boundaries of our planet and are ready to venture into the unknown in an estimated time span of next 20 years. In the near future, manned missions to space will be for a longer period of time meaning that the human body will be exposed to a foreign environment for a longer duration of time. The space environment has various effects on the human body and if it’s not taken care of; may lead to long-term and irreversible damage. This article outlines some of the novel formulations which could be used for space travel and their stability

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Ponkin, I. V. "Public Administration and Regulatory Space in the Field of Artificial Intelligence." Courier of Kutafin Moscow State Law University (MSAL)) 1, no. 11 (2023): 108–16. http://dx.doi.org/10.17803/2311-5998.2022.99.11.108-116.

Повний текст джерела

Анотація:

The article is devoted to assessing the completeness and quality of legal regulation in the field of artificial intelligence and legal support for the use of artificial intelligence in public administration. The author shows the state and development of artificial intelligence regulation in Russia.The author shows that the segments of conceptual and doctrinal and strategic planning acts and the segment of standardizing documents in Russia have been created and filled to a certain extent in the country (at least purely formally), but there are no acts of legal regulation today, neither in a ful

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Zadorozhny, Оleksandr. "Demonopolization of the space industry in Ukraine." Law Review of Kyiv University of Law, no. 4 (December 30, 2020): 428–31. http://dx.doi.org/10.36695/2219-5521.4.2020.77.

Повний текст джерела

Анотація:

The emergence of the need to demonopolize space activities in Ukraine indicates that space may soon turn from an object ofexclusively state research into a regular destination. Therefore, we turn to the analysis of Ukrainian legislation in this area.The article analyzes the provisions of the Law of Ukraine “On Amendments to Certain Legislative Acts of Ukraine on State Regu -lation of Space Activities” and presents arguments in favor of demonopolization of space activities in Ukraine, which in turn shouldpromote space activities and attract investment in Ukraine.Historically, in Ukraine, the sp

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Feinstein, Adina D., Darryl Z. Seligman, Maximilian N. Günther, and Fred C. Adams. "Testing Self-organized Criticality across the Main Sequence Using Stellar Flares from TESS." Astrophysical Journal Letters 925, no. 1 (2022): L9. http://dx.doi.org/10.3847/2041-8213/ac4b5e.

Повний текст джерела

Анотація:

Abstract Self-organized criticality describes a class of dynamical systems that maintain themselves in an attractor state with no intrinsic length or timescale. Fundamentally, this theoretical construct requires a mechanism for instability that may trigger additional instabilities locally via dissipative processes. This concept has been invoked to explain nonlinear dynamical phenomena such as featureless energy spectra that have been observed empirically for earthquakes, avalanches, and solar flares. If this interpretation proves correct, it implies that the solar coronal magnetic field mainta

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Zhao, Lin, Xuesong Leng, Bowen Bai, et al. "Effect of Coating Thickness on the Atomic Oxygen Resistance of Siloxane Coatings Synthesized by Plasma Polymerization Deposition Technique." Coatings 13, no. 1 (2023): 153. http://dx.doi.org/10.3390/coatings13010153.

Повний текст джерела

Анотація:

Atomic oxygen in the low Earth orbit (LEO) environment is highly oxidizing. Due to the high flight speed of spacecraft, the relative kinetic energy of high-flux atomic oxygen bombarding the spacecraft surface can reach up to about 5 eV. Therefore, atomic oxygen is one of the most dangerous space environment factors in LEO, which seriously affects the safe operation and service life of spacecraft in orbit. In order to meet the requirements for the high reliability and long lifetime of spacecraft, effective protection measures must be taken on their sensitive surfaces. Siloxane is a coating with

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Singh, Anmol, and P. K. Jain. "A Study on Rocker-Bogie Suspension for a Planetary Rover Prototype." International Journal of Advance Research and Innovation 8, no. 3 (2020): 27–39. http://dx.doi.org/10.51976/ijari.832006.

Повний текст джерела

Анотація:

In light of the notable rocker-bogie mechanism, this paper shows an ideal plan of a rocker-bogie suspension framework so as to ensure high mobile steadiness as well as excellent versatility of a prototype rover vehicle while traversing through rough terrains. It is essentially a suspension arrangement utilized in mechanical automated vehicles utilized explicitly for space investigation. The rocker-bogie suspension-based rovers have been effectively presented for the Mars Pathfinder and Mars Exploration Rover (MER) and Mars Science Laboratory (MSL) missions led by zenith space investigation lab

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Mishra, B., Eesha Gadia, and S. K. Tripathy. "Dynamics of quasi-de Sitter and linear combination of exponential models in extended gravity." International Journal of Geometric Methods in Modern Physics 18, no. 11 (2021): 2150168. http://dx.doi.org/10.1142/s0219887821501681.

Повний текст джерела

Анотація:

In this paper, we have studied the dynamical aspects of some cosmological models in an isotropic space-time within the framework of an extended gravity theory. Two accelerating cosmological models are presented with quasi-de Sitter (QDS) and linear combination of exponential (LCE) scale factors. The geometrical testing mechanism has been performed and analyzed. While the results of the QDS model show a departure from the concordant [Formula: see text]CDM model, the resulting behavior of the LCE model seems to be compatible with the [Formula: see text]CDM model only at the present epoch and is

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Nyberg, Erik, Dídac Llopart i Cervelló, and Ichiro Minami. "Tribology in Space Robotic Actuators: Experimental Method for Evaluation and Analysis of Gearboxes." Aerospace 8, no. 3 (2021): 75. http://dx.doi.org/10.3390/aerospace8030075.

Повний текст джерела

Анотація:

Liquid lubricants are critical to enable long-life operation of high-performance machinery, such as geared actuators employed in robotics. In space applications, actuator gearboxes must operate in low temperatures, where liquid lubricants face inherent problems related to low temperature rheology. Heaters are relied upon to provide acceptable gearbox temperatures. Unfortunately, heating is energy-intense and does not scale well with increasing mechanism mass and performance. Effective boundary lubrication (BL), on the other hand, can minimize problems of low temperature rheology. BL relies on

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Shelton, Travis Edward, Dylan Joseph Stelzer, Carl R. Hartsfield, Gregory Richard Cobb, Ryan P. O'Hara, and Christopher D. Tommila. "Understanding surface roughness of additively manufactured nickel superalloy for space applications." Rapid Prototyping Journal 26, no. 3 (2019): 557–65. http://dx.doi.org/10.1108/rpj-02-2019-0049.

Повний текст джерела

Анотація:

Purpose For many applications, including space applications, the usability and performance of a component is dependent on the surface topology of the additively manufactured part. The purpose of this paper is to present an investigation into minimizing the residual surface roughness of direct metal laser sintering (DMLS) samples by manipulating the input process parameters. Design/methodology/approach First, the ability to manipulate surface roughness by modifying processing parameters was explored. Next, the surface topography was characterized to quantify roughness. Finally, microthruster no

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Shams, Taimur Ali, Syed Irtiza Ali Shah, Muhammad Ayaz Ahmad, Kashif Mehmood, Waseem Ahmad, and Syed Tauqeer ul Islam Rizvi. "Selection Methodology of an Electric Actuator for Nose Landing Gear of a Light Weight Aircraft." Applied Sciences 10, no. 23 (2020): 8730. http://dx.doi.org/10.3390/app10238730.

Повний текст джерела

Анотація:

Landing gear system of an aircraft enables it to take off and land with safety and comfort. Because of the horizontal and vertical velocity of aircraft, upon landing, the complete aircraft undergoes different forcing functions in the form of the impact force that is absorbed by landing gears, shock absorbers, and actuators. In this research, a selection methodology has been proposed for an electrical actuator to be installed in the retraction mechanism of nose landing gear of an aircraft having 1600 kg gross takeoff weight. Nose landing gear and its associated components, like strut and shock

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Walsh, James C. "High Throughput, Mechanism-Based Screening Techniques for Discovering Novel Agrochemicals." Journal of Biomolecular Screening 3, no. 3 (1998): 175–81. http://dx.doi.org/10.1177/108705719800300303.

Повний текст джерела

Анотація:

A variety of screening strategies can be employed for discovering novel agrochemicals such as fungicides, insecticides, herbicides and antiparasitics. Traditionally, random evaluation of chemical and natural products samples has been used in assay systems ranging from greenhouse testing down to in vitro microplate screening. This task can be formidable depending on the size of sample libraries and personnel resources available. One important tool in the overall discovery process is the application of highly specific and sensitive mechanism-based assays for the purpose of identifying novel lead

Стилі APA, Harvard, Vancouver, ISO та ін.

39

de Groh, Kim K., James R. Gaier, Rachelle L. Hall, et al. "Insights into the Damage Mechanism of Teflon® FEP from the Hubble Space Telescope." High Performance Polymers 12, no. 1 (2000): 83–104. http://dx.doi.org/10.1088/0954-0083/12/1/307.

Повний текст джерела

Анотація:

Metallized Teflon® FEP (fluorinated ethylene propylene) thermal control material on the Hubble Space Telescope (HST) has been found to be degrading in the space environment. Teflon® FEP thermal control blankets (space-facing FEP) retrieved during the first servicing mission (SM1) were found to be embrittled on solar-facing surfaces and contained microscopic cracks. During the second servicing mission (SM2) astronauts noticed that the FEP outer layer of the multi-layer insulation (MLI) covering the telescope was cracked in many locations around the telescope. Large cracks were observed on the l

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Wang, Futao, Chaobing Li, Shaohua Niu, Pengfei Wang, Huaisong Wu, and Bingyang Li. "Design and Analysis of a Spherical Robot with Rolling and Jumping Modes for Deep Space Exploration." Machines 10, no. 2 (2022): 126. http://dx.doi.org/10.3390/machines10020126.

Повний текст джерела

Анотація:

Complex and unknown terrains in deep space exploration present great challenges to existing exploration robots. In this paper, a multi-mode motion spherical robot with flexible motion and strong environmental adaptability is presented. The spherical robot can roll and jump by swinging the pendulum and rotating the 2-DOF frame. The structure design of spherical robot is described, and the feasibility of multi-mode motion is analyzed by establishing dynamic model and testing robot prototype. In addition, the adaptability of the spherical robot motion mechanism in microgravity environment is prel

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Yang, Shu-Cheng, Wen-Biao Han, Shuo Xin, and Chen Zhang. "Testing dispersion of gravitational waves from eccentric extreme-mass-ratio inspirals." International Journal of Modern Physics D 28, no. 15 (2019): 1950166. http://dx.doi.org/10.1142/s0218271819501669.

Повний текст джерела

Анотація:

In general relativity, there is no dispersion in gravitational waves, while some modified gravity theories predict dispersion phenomena in the propagation of gravitational waves. In this paper, we demonstrate that this dispersion will induce an observable deviation of waveforms if the orbits have large eccentricities. The mechanism is that the waveform modes with different frequencies will be emitted at the same time due to the existence of eccentricity. During the propagation, because of the dispersion, the arrival time of different modes will be different, then produce the deviation and deph

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Yu, Helong, Shimeng Qiao, Ali Asghar Heidari, Lei Shi, and Huiling Chen. "Mutational Chemotaxis Motion Driven Moth-Flame Optimizer for Engineering Applications." Applied Sciences 12, no. 23 (2022): 12179. http://dx.doi.org/10.3390/app122312179.

Повний текст джерела

Анотація:

Moth-flame optimization is a typical meta-heuristic algorithm, but it has the shortcomings of low-optimization accuracy and a high risk of falling into local optima. Therefore, this paper proposes an enhanced moth-flame optimization algorithm named HMCMMFO, which combines the mechanisms of hybrid mutation and chemotaxis motion, where the hybrid-mutation mechanism can enhance population diversity and reduce the risk of stagnation. In contrast, chemotaxis-motion strategy can better utilize the local-search space to explore more potential solutions further; thus, it improves the optimization accu

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Jiang, H., M. Wang, and M. X. Huang. "Crucial feature space for ductile bcc high-entropy alloys." Applied Physics Letters 121, no. 16 (2022): 161902. http://dx.doi.org/10.1063/5.0124590.

Повний текст джерела

Анотація:

Body-centered cubic (bcc) high-entropy alloys (HEAs) are promising structural materials for nuclear power plants to ensure good radiation resistance. However, the majority of bcc HEAs show limited room temperature ductility even in compression. In addition to the compressive properties of as-cast high-activation bcc HEAs collected from the literature, those of low-activation ones were investigated by phase diagram calculations and experiments. Therefore, a consistent dataset comprising 93 samples was generated. A classification and regression tree (CART) algorithm was employed to differentiate

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Volkov, M. V. "Modernization of the electromechanical equipment the trigger device: description of the design and testing." Spacecrafts & Technologies 5, no. 3 (2021): 137–45. http://dx.doi.org/10.26732/j.st.2021.3.02.

Повний текст джерела

Анотація:

At present, modern spacecraft use high-precision equipment that is sensitive to influence impacts. In this regard, there is a need to create shock-free trigger devices for mechanisms for holding and releasing movable structural elements. These tasks determined the vector of development of electromechanical trigger devices that do not contain pyrotechnic devices in their design. Along with the new tasks, there are constant problems of rocket and space technology – the improvement of mass-dimensional characteristics. However, pyrotechnic elements force the use of massive housings and brackets fo

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Li, Li, and Ji Li. "An Inverse Modeling Method for Acoustic Emission Source of Cracking." Applied Mechanics and Materials 333-335 (July 2013): 1742–45. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1742.

Повний текст джерела

Анотація:

Crack formation is a severe problem concerning steel structures under service loading. Understanding of the mechanism of crack initiation and propagation is therefore critical to structure safety design and maintenance. Although many efforts were put into crack mechanism studying, and some progress has been made in the aspect of crack propagation, the problem of crack initiation i.e. cracking remains left unsolved. In this paper, an inverse modeling method for acoustic emission (AE) source of cracking was proposed for the mechanism revelation. In the method, AE signal was related to crack stre

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Thienyaem, Titinai, Khwantri Saengprachatanarug, Saree Wongpichet, Taira Eizo, and Prakarn Thongrak. "The Influence of the Metering Device Arrangement to the Discharging Consistency of the Sugarcane Billet Planter." Advanced Materials Research 931-932 (May 2014): 1561–67. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.1561.

Повний текст джерела

Анотація:

Sugar cane is an important economic crop of Thailand, used as a raw material to produce sugar and renewable energy. Due to a labor shortage problem, and an increase in the number of sugarcane combine harvesters, sugarcane billet planters from overseas have become more popular, because they can use seed cane prepared by combine harvesters. In order to maintain a high consistency of billet plating, the harvester discharge mechanism needs to accommodate the physical properties of sugarcane billet of Thai's variety, which vary by breed and harvesting method according to area. Thus, this study aims

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Zhang, Yi Zhuo, Da Yong Wang, Zhi Wei Zhou, and Shi Quan Tao. "Imaging Analysis of Image Plane Digital Holography." Advanced Materials Research 314-316 (August 2011): 1439–43. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1439.

Повний текст джерела

Анотація:

Digital holography microscopy has been widely used as a testing technology in many areas for the ability of real-time three-dimensional imaging. In this study we focus on understanding the system imaging mechanism and recording capacity of the off-axis image plane digital holography (IPDH) which has several advantages. Wigner distribution function and space-bandwidth product are utilized to examine the minimum requirement for the recording capacity of the CCD camera. The discussion provides a good understanding and a useful guide to the formation of practical IPDH systems.

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Jones, H. E., K. L. Grieve, W. Wang, and A. M. Sillito. "Surround Suppression in Primate V1." Journal of Neurophysiology 86, no. 4 (2001): 2011–28. http://dx.doi.org/10.1152/jn.2001.86.4.2011.

Повний текст джерела

Анотація:

We investigated the spatial organization of surround suppression in primate primary visual cortex (V1). We utilized drifting stimuli, configured to extend either from within the classical receptive field (CRF) to surrounding visual space, or from surrounding visual space into the CRF or subdivided to generate direction contrast, to make a detailed examination of the strength, spatial organization, direction dependence, mechanisms, and laminar distribution of surround suppression. Most cells (99/105, 94%) through all cortical layers, exhibited suppression (mean reduction 67%) to uniform stimuli

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Chen, Xu, Chunhong Liu, Changchun Gao, and Yao Jiang. "Mechanism Underlying the Formation of Virtual Agglomeration of Creative Industries: Theoretical Analysis and Empirical Research." Sustainability 13, no. 4 (2021): 1637. http://dx.doi.org/10.3390/su13041637.

Повний текст джерела

Анотація:

Industrial agglomeration serves as an effective model for developing the creative economy and manifests itself as the interdependence of creative subjects in geographical space. The traditional methods of resource agglomeration have undergone tremendous changes due to the development of digital technology. These transformations have given birth to a new organizational form of the virtual agglomeration of creative industries. The present work uses field interviews and grounded theoretical research methods to construct a theoretical model of this new organizational phenomenon. Questionnaire surv

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Xue, Xingsi, Xiaojing Wu, Jie Zhang, Lingyu Zhang, Hai Zhu, and Guojun Mao. "Aggregating Heterogeneous Sensor Ontologies with Fuzzy Debate Mechanism." Security and Communication Networks 2021 (May 26, 2021): 1–12. http://dx.doi.org/10.1155/2021/2878684.

Повний текст джерела

Анотація:

Aiming at enhancing the communication and information security between the next generation of Industrial Internet of Things (Nx-IIoT) sensor networks, it is critical to aggregate heterogeneous sensor data in the sensor ontologies by establishing semantic connections in diverse sensor ontologies. Sensor ontology matching technology is devoted to determining heterogeneous sensor concept pairs in two distinct sensor ontologies, which is an effective method of addressing the heterogeneity problem. The existing matching techniques neglect the relationships among different entity mapping, which make

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!