To see the other types of publications on this topic, follow the link: "Cascade technology".

Journal articles on the topic '"Cascade technology"'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic '"Cascade technology".'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Deyo, Richard A. "Cascade Effects of Medical Technology." Annual Review of Public Health 23, no. 1 (2002): 23–44. http://dx.doi.org/10.1146/annurev.publhealth.23.092101.134534.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cao, Puyu, Luanjiao Liu, Jinfeng Zhang, Guidong Li, Rui Zhu, and Zhiqin Yang. "A Study of the Hydrodynamic Characteristics of Two-Dimensional Tandem Cascades." Water 16, no. 5 (2024): 679. http://dx.doi.org/10.3390/w16050679.

Full text
Abstract:
In comparison to single-row cascades, tandem cascades offer the advantages of reduced losses and enhanced operational capabilities, making them widely employed in compressor applications. However, current research on tandem cascades in hydraulic equipment remains relatively limited. In order to explore the potential application of two-dimensional tandem cascade structures in hydrodynamics and investigate their performance differences from single-row cascades, this study proposes a design scheme for a tandem cascade based on an existing single-row cascade design. Numerical simulation technology
APA, Harvard, Vancouver, ISO, and other styles
3

Saandeep, Sreerambatla. "Quantum Cascade Lasers." European Journal of Advances in Engineering and Technology 9, no. 5 (2022): 120–26. https://doi.org/10.5281/zenodo.13325205.

Full text
Abstract:
Quantum Cascade Lasers (QCLs) represent a significant advancement in laser technology, enabling a broad range of applications due to their unique operational principles. Unlike traditional semiconductor lasers that rely on inter-band transitions, QCLs use intersubband transitions within quantum wells, allowing for emission in the mid-infrared and terahertz regions. This paper aims to provide a comprehensive overview of QCL technology, discussing its principles, current developments, and potential future applications. The integration of QCLs with silicon technology is also examined, showcasing
APA, Harvard, Vancouver, ISO, and other styles
4

Granata, Francesco. "Dropshaft cascades in urban drainage systems." Water Science and Technology 73, no. 9 (2016): 2052–59. http://dx.doi.org/10.2166/wst.2016.051.

Full text
Abstract:
Dropshaft cascades are typical elements of sewer systems in steep urban catchment basins. The design of a dropshaft cascade, which is generally addressed as an optimization problem, also needs to consider the subsequent effects induced on the flow by the different elements of the cascade. Experimental research has been performed at the hydraulic engineering laboratory of the University of Cassino and Southern Lazio in order to investigate the basic flow patterns in a dropshaft cascade, with particular reference to energy dissipation and air entrainment. This research has shown that, regarding
APA, Harvard, Vancouver, ISO, and other styles
5

Fu, Lan Fang, He Xu Sun, and Yan Cai Zhu. "Sample Time Staggered One-Cycle Control Based on Three-Phase H-Bridge Cascade VSI." Advanced Materials Research 516-517 (May 2012): 1822–26. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1822.

Full text
Abstract:
The One-Cycle Control(OCC) technique not only provides fast dynamic response, but also can admirably suppress the perturbation yielded by dc source and eliminate the undesired harmonic contents.The cascade H-bridge VSI has very low dv/dt and distortion in the voltage output waveform.Sample time staggered one-cycle control(STS-OCC) based on three-phase H-bridge cascade VSI is proposed. It yields all of the advantages of the OCC and cascade VSI.The results of the simulation and analysis show that the STS-OCC technology has high equivalent work frequency, little switching loss and quick dynamic r
APA, Harvard, Vancouver, ISO, and other styles
6

Andrefsky, William. "Cascade Phase Lithic Technology: An Example from the Lower Snake River." North American Archaeologist 16, no. 2 (1995): 95–115. http://dx.doi.org/10.2190/5jg4-bxd1-mjub-a214.

Full text
Abstract:
Chipped stone artifact data from several Cascade phase sites located on the lower Snake River are analyzed to evaluate lithic technological characteristics of the early Cascade phase. Interpretations based upon the stone tool assemblages suggest traditional generalizations about the early Cascade phase require some rethinking. Specifically, tool type and debitage type analysis indicate that early Cascade phase settlement organization was not necessarily oriented to a local riverine setting, rather, early Cascade phase populations were highly mobile and visited major river drainages during only
APA, Harvard, Vancouver, ISO, and other styles
7

Han, Jinyoung, Daejin Choi, Jungseock Joo, and Chen-Nee Chuah. "Predicting Popular and Viral Image Cascades in Pinterest." Proceedings of the International AAAI Conference on Web and Social Media 11, no. 1 (2017): 82–91. http://dx.doi.org/10.1609/icwsm.v11i1.14879.

Full text
Abstract:
The word-of-mouth diffusion has been regarded as an important mechanism to advertise a new idea, image, technology, or product in online social networks (OSNs). This paper studies the prediction of popular and viral image diffusion in Pinterest. We first characterize an image cascade from two perspectives: (i) volume — how large the cascade is, that is, total number of users reached, and (ii) structural virality — how many users in the cascade are responsible for attracting other users. Our model predicts whether an image will be (a) popular in terms of the volume of its cascade, or (b) viral
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Zhihua, Zianfei Tang, and Yihua Yang. "Research on architecture of security video surveillance network cascade system with big data." World Journal of Engineering 13, no. 1 (2016): 77–81. http://dx.doi.org/10.1108/wje-02-2016-010.

Full text
Abstract:
Purpose The high-efficient processing of mass data is a primary issue in building and maintaining security video surveillance system. This paper aims to focus on the architecture of security video surveillance system, which was based on Hadoop parallel processing technology in big data environment. Design/methodology/approach A hardware framework of security video surveillance network cascaded system (SVSNCS) was constructed on the basis of Internet of Things, network cascade technology and Hadoop platform. Then, the architecture model of SVSNCS was proposed using the Hadoop and big data proce
APA, Harvard, Vancouver, ISO, and other styles
9

Bra¨unling, W., and F. Lehthaus. "Investigations of the Effect of Annulus Taper on Transonic Turbine Cascade Flow." Journal of Engineering for Gas Turbines and Power 108, no. 2 (1986): 285–92. http://dx.doi.org/10.1115/1.3239901.

Full text
Abstract:
In a test facility for rotating annular cascades with three conical test sections of different taper angles (0, 30, 45 deg), experiments are conducted for two geometrically different turbine cascade configurations, a hub section cascade with high deflection and a tip section cascade with low deflection. The evaluation of time-averaged data derived from conventional probe measurements upstream and downstream of the test wheel in the machine-fixed absolute system is based on the assumption of axisymmetric stream surfaces. The cascade characteristics, i.e., mass flow, deflection, and losses, for
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Zhen Fang. "The Energy-Saving Analysis of Cascade Speed Control and Frequency Control about Chopper Inner Feedback." Applied Mechanics and Materials 401-403 (September 2013): 1641–43. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1641.

Full text
Abstract:
ntroduced the working principle and energy-saving analysis of cascade speed control system feedback chopping cascade speed control motor. The comparison of Inverter technology and chopping cascade speed control of the internal feedback technology.
APA, Harvard, Vancouver, ISO, and other styles
11

Nitzsche, Roy, Hendrik Etzold, Marlen Verges, Arne Gröngröft, and Matthias Kraume. "Demonstration and Assessment of Purification Cascades for the Separation and Valorization of Hemicellulose from Organosolv Beechwood Hydrolyzates." Membranes 12, no. 1 (2022): 82. http://dx.doi.org/10.3390/membranes12010082.

Full text
Abstract:
Hemicellulose and its derivatives have a high potential to replace fossil-based materials in various high-value-added products. Within this study, two purification cascades for the separation and valorization of hemicellulose and its derived monomeric sugars from organosolv beechwood hydrolyzates (BWHs) were experimentally demonstrated and assessed. Purification cascade 1 included hydrothermal treatment for converting remaining hemicellulose oligomers to xylose and the purification of the xylose by nanofiltration. Purification cascade 2 included the removal of lignin by adsorption, followed by
APA, Harvard, Vancouver, ISO, and other styles
12

Sun, Ying, Xiaoli Ma, and Hao Hu. "Application of Nano-Drug Delivery System Based on Cascade Technology in Cancer Treatment." International Journal of Molecular Sciences 22, no. 11 (2021): 5698. http://dx.doi.org/10.3390/ijms22115698.

Full text
Abstract:
In the current cancer treatment, various combination therapies have been widely used, such as photodynamic therapy (PDT) combined with chemokinetic therapy (CDT). However, due to the complexity of the tumor microenvironment (TME) and the limitations of treatment, the efficacy of current treatment options for some cancers is unsatisfactory. Nowadays, cascade technology has been used in cancer treatment and achieved good therapeutic effect. Cascade technology based on nanotechnology can trigger cascade reactions under specific tumor conditions to achieve precise positioning and controlled releas
APA, Harvard, Vancouver, ISO, and other styles
13

Nesterov-Mueller, Alexander, and Roman Popov. "The Combinatorial Fusion Cascade to Generate the Standard Genetic Code." Life 11, no. 9 (2021): 975. http://dx.doi.org/10.3390/life11090975.

Full text
Abstract:
Combinatorial fusion cascade was proposed as a transition stage between prebiotic chemistry and early forms of life. The combinatorial fusion cascade consists of three stages: eight initial complimentary pairs of amino acids, four protocodes, and the standard genetic code. The initial complimentary pairs and the protocodes are divided into dominant and recessive entities. The transitions between these stages obey the same combinatorial fusion rules for all amino acids. The combinatorial fusion cascade mathematically describes the codon assignments in the standard genetic code. It explains the
APA, Harvard, Vancouver, ISO, and other styles
14

Perera, K. T. N., T. M. N. Wijayaratna, H. M. Jayatillake, J. M. A. Manatunge, and Tilak Priyadarshana. "Hydrological principle behind the development of series of bunds in ancient tank cascades in small catchments, Sri Lanka." Water Practice and Technology 15, no. 4 (2020): 1174–89. http://dx.doi.org/10.2166/wpt.2020.088.

Full text
Abstract:
Abstract Utilisation of water harvesting systems of ancient origin for present-day requirements can be seen in many regions of the world. The adoption of ancient tank cascades as the smallest hydrological unit of river basin development in Sri Lanka is such a practice. However, these systems are associated with unsuccessful experiences in agricultural performance while being vulnerable to both floods and droughts. Therefore, the identification of principles behind the development of cascades is vital. This study reviewed historical evidence, definitions, terminologies and studies on the develo
APA, Harvard, Vancouver, ISO, and other styles
15

Pacciani, R., M. Marconcini, A. Arnone, and F. Bertini. "An assessment of the laminar kinetic energy concept for the prediction of high-lift, low-Reynolds number cascade flows." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 225, no. 7 (2011): 995–1003. http://dx.doi.org/10.1177/0957650911412444.

Full text
Abstract:
The laminar kinetic energy (LKE) concept has been applied to the prediction of low-Reynolds number flows, characterized by separation-induced transition, in high-lift airfoil cascades for aeronautical low-pressure turbine applications. The LKE transport equation has been coupled with the low-Reynolds number formulation of the Wilcox's k − ω turbulence model. The proposed methodology has been assessed against two high-lift cascade configurations, characterized by different loading distributions and suction-side diffusion rates, and tested over a wide range of Reynolds numbers. The aft-loaded T1
APA, Harvard, Vancouver, ISO, and other styles
16

Shekhtman, Lev, and Aleksandr Dolgov. "Fast High Resolution Position-Sensitive Gaseous Detectors." Siberian Journal of Physics 8, no. 3 (2013): 47–62. http://dx.doi.org/10.54362/1818-7919-2013-8-3-47-62.

Full text
Abstract:
The present review describes a new coordinate detectors based on gas micro-pattern technology, which are applied in experiments in elementary particle physics and with SR beams. The microstrip gas chambers (MSGC) on substrates with electronic conductivity are presented in the paper. Such detectors are shown to have spatial resolution better than 100 micron and to be able to effectively operate at particle rates up to 106 s-1mm-2, that at least by two orders of magnitude higher than rate capability of multiwire proportional chambers. Essential part of the review is devoted to studies of the cas
APA, Harvard, Vancouver, ISO, and other styles
17

Han, Delong, Tao Meng, and Min Li. "Dynamic End-to-End Information Cascade Prediction Based on Neural Networks and Snapshot Capture." Electronics 12, no. 13 (2023): 2875. http://dx.doi.org/10.3390/electronics12132875.

Full text
Abstract:
Knowing how to effectively predict the scale of future information cascades based on the historical trajectory of information dissemination has become an important topic. It is significant for public opinion guidance; advertising; and hotspot recommendation. Deep learning technology has become a research hotspot in popularity prediction, but for complex social platform data, existing methods are challenging to utilize cascade information effectively. This paper proposes a novel end-to-end deep learning network CAC-G with cascade attention convolution (CAC). This model can stress the global inf
APA, Harvard, Vancouver, ISO, and other styles
18

Vitiello, Miriam S., and Alessandro Tredicucci. "Physics and technology of Terahertz quantum cascade lasers." Advances in Physics: X 6, no. 1 (2021): 1893809. http://dx.doi.org/10.1080/23746149.2021.1893809.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Vitiello, Miriam Serena, and Paolo De Natale. "Terahertz Quantum Cascade Lasers as Enabling Quantum Technology." Advanced Quantum Technologies 5, no. 1 (2021): 2100082. http://dx.doi.org/10.1002/qute.202100082.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Szerling, A., P. Karbownik, K. Kosiel, et al. "Mid-Infrared GaAs/AlGaAs Quantum Cascade Lasers Technology." Acta Physica Polonica A 116, Supplement (2009): S—45—S—47. http://dx.doi.org/10.12693/aphyspola.116.s-45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Landis, Geoffrey A. "Technology assessment of thin-film cascade photovoltaic modules." Solar Cells 25, no. 3 (1988): 203–21. http://dx.doi.org/10.1016/0379-6787(88)90061-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Büurkholz, Armin. "The Technology of Droplet Measurement with Cascade Impactors." Particle & Particle Systems Characterization 3, no. 1 (1986): 8–13. http://dx.doi.org/10.1002/ppsc.19860030103.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Zhu, Jian Hong, Wei Chang, Wen Xia Pan, et al. "Harmonic Frequency Cascade Static Synchronous Compensator." Applied Mechanics and Materials 236-237 (November 2012): 1373–82. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.1373.

Full text
Abstract:
Traditional Static Synchronous Compensator(STATCOM ) compensates most singly for reactive power or steady state voltage in high power field. On this point, the paper puts forward a harmonic frequency compensation technique, which can realize dynamic reactive power compensation as well as harmonic control of less than 20th power. Then, using average switching method, it gives the mathematical model on the device. Active and reactive current decoupling is realized. For the electrical model, the compensator developed uses 8-cascaded H bridge structure, together with the carrier phase-shifted SVM
APA, Harvard, Vancouver, ISO, and other styles
24

Liang, Zhaoheng, Jun Zhou, Lucia Petti, et al. "SERS-based cascade amplification bioassay protocol of miRNA-21 by using sandwich structure with biotin–streptavidin system." Analyst 144, no. 5 (2019): 1741–50. http://dx.doi.org/10.1039/c8an02259c.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Benini, E., and A. Toffolo. "A parametric method for optimal design of two-dimensional cascades." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 215, no. 4 (2001): 465–73. http://dx.doi.org/10.1243/0957650011538721.

Full text
Abstract:
A parametric method for optimal design of two-dimensional cascades, based on the coupling between a genetic algorithm and a commercial computational fluid dynamics code, is introduced. The results of cascade geometry optimization for a large range of inlet and outlet flow angle pairs are presented. The method is a simple as well as effective tool for the optimal design of cascades for axial flow pumps.
APA, Harvard, Vancouver, ISO, and other styles
26

Bobrischev, A. A., K. V. Motovichev, and M. S. Nazarova. "PEDAGOGICAL TECHNOLOGY OF CASCADE ECONOMIZATION OF APPLIED SWIMMING TECHNIQUE." Bulletin of Udmurt University. Series Philosophy. Psychology. Pedagogy 32, no. 4 (2022): 445–51. http://dx.doi.org/10.35634/2412-9550-2022-32-4-445-451.

Full text
Abstract:
Current problem : insufficient attention is paid to the training of students in water rescue based on the development of applied swimming skills, while the need to increase its effectiveness is of particular importance, since, according to statistics, the number of emergencies on water is high. Purpose : empirical substantiation of the effectiveness of the pedagogical technology of cascade economization of applied swimming technique. Methodology : conducting a pedagogical experiment using three experimental groups (52 students, aged 19-21 years), with the use of the pedagogical technology of c
APA, Harvard, Vancouver, ISO, and other styles
27

Hergt, Alexander, Tobias Danninger, Joachim Klinner, Sebastian Grund, Manfred Beversdorff, and Christian Werner-Spatz. "Effect of Leading-Edge Erosion on the Performance of Transonic Compressor Blades." International Journal of Turbomachinery, Propulsion and Power 9, no. 1 (2024): 1. http://dx.doi.org/10.3390/ijtpp9010001.

Full text
Abstract:
In this paper, an experimental and numerical investigation of the effect of leading-edge erosion in transonic blades was performed. The measurements were carried out on a linear blade cascade in the Transonic Cascade Wind Tunnel of DLR in Cologne at two operating points with an inflow Mach number of 1.05 and 1.12. The numerical simulations were performed by ANSYS Germany. The type and specifications of the erosion for the study were derived from real engine blades and applied to the leading edges of the experimental cascade blades using a waterjet process, as well as modeled in detail and mesh
APA, Harvard, Vancouver, ISO, and other styles
28

Hua, Bing, Nan Zhang, and Mohong Zheng. "Satellite magnetic/momentum wheel attitude control technology based on PIO cascade-saturation algorithm." World Journal of Engineering 18, no. 4 (2021): 645–50. http://dx.doi.org/10.1108/wje-10-2020-0536.

Full text
Abstract:
Purpose Taking into account the factors of torque saturation and angular velocity limitation during the actual attitude maneuver of the satellite, as well as the difficulty of parameter selection in the design of attitude control algorithm, the purpose of this paper is to propose a satellite magnetic/momentum wheel attitude control technology based on pigeon-inspired optimization (PIO) cascade-saturation control law optimization. Design/methodology/approach The optimal parameters are calculated through the PIO algorithm and then the parameters are used in the cascade-saturation control law to
APA, Harvard, Vancouver, ISO, and other styles
29

Cao, Zhiyuan, Bo Liu, Ting Zhang, Yibing Xu, and Hang Zhao. "Non-axisymmetric endwall profiling in a highly loaded compressor cascade." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 233, no. 3 (2018): 275–92. http://dx.doi.org/10.1177/0957650918786148.

Full text
Abstract:
Very few studies of non-axisymmetric endwall profiling in compressor have been conducted in published literatures. This study investigates the control mechanism of non-axisymmetric endwall on the flow field of a highly loaded compressor cascade and the guidelines for the design of non-axisymmetric endwall. First, CFD method was validated with existing experimental data. Then, the design method of non-axisymmetric endwall based on trigonometric function and Bezier curve was introduced. The design strategies of non-axisymmetric endwall considering axial position effect, height effect and differe
APA, Harvard, Vancouver, ISO, and other styles
30

Sirtori, C., H. Page, C. Becker, and V. Ortiz. "GaAs-AlGaAs quantum cascade lasers: physics, technology, and prospects." IEEE Journal of Quantum Electronics 38, no. 6 (2002): 547–58. http://dx.doi.org/10.1109/jqe.2002.1005405.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Harrowven, David C., Shelagh T. Dennison, and Peter Howes. "A synthetic approach to the pseudopterosins using cascade technology." Tetrahedron Letters 35, no. 24 (1994): 4243–46. http://dx.doi.org/10.1016/s0040-4039(00)73163-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Gorokhovsky, Vladimir I. "Characterization of cascade arc assisted CVD diamond coating technology." Surface and Coatings Technology 194, no. 2-3 (2005): 344–62. http://dx.doi.org/10.1016/j.surfcoat.2004.08.220.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Zhuravleva, Larisa, and Vladimir Solovyev. "IRRIGATION TECHNOLOGY WITH CASCADE SPRINKLER WITH INTELLIGENT CONTROL SYSTEM." Scientific Life 14, no. 11 (2019): 1658–66. http://dx.doi.org/10.35679/1991-9476-2019-14-11-1658-1666.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Li, Chang. "Research on the traffic flow measurement method of intelligent connected vehicles based on series and cascade technology." Mathematical Modeling and Algorithm Application 2, no. 3 (2024): 17–20. http://dx.doi.org/10.54097/y98dwv38.

Full text
Abstract:
At present, the major cities in our country have entered the development of smart cities, the utilization rate and prevalence rate of intelligent connected cars in smart cities have reached a new peak,to manage the real-time traffic flow of intelligent connected vehicles effectively in smart cities. This paper proposes to calculate the flow of intelligent connected vehicles based on series cascade technology. Firstly, this paper collects multi-source heterogeneous data based on multiple collectors; Secondly, a generative adversarial network is employed for data fusion, synthetic data, closely
APA, Harvard, Vancouver, ISO, and other styles
35

von Sperling, Marcos. "A Study on Reaeration in River Cascades." Water Science and Technology 19, no. 5-6 (1987): 757–67. http://dx.doi.org/10.2166/wst.1987.0254.

Full text
Abstract:
The reaeration caused by a series of natural cascades on the Arrudas River was studied. Experimental results were compared with theoretical ones given by formulae available in the literature and showed no positive agreement. An empirical formula was derived and further simplified for use in a more generalized way, giving very good correlation with observed dissolved oxygen values. This formula was tested in two other cascade systems, giving acceptable results. A sample calculation for a simulated situation is presented, showing the methodology to be employed in cascades of similar configuratio
APA, Harvard, Vancouver, ISO, and other styles
36

Wang, Yongfei, Xianxun Wang, Edgar Virguez, et al. "The Effect of Down-Cascade Re-Regulation on Alleviating the Flow Regime Alteration Induced by an Up-Cascade Reservoir." Water 15, no. 12 (2023): 2166. http://dx.doi.org/10.3390/w15122166.

Full text
Abstract:
An analysis of the effect on the flow regime caused by reservoir operation is crucial to balancing the exploitation and protection of water resources. The long-term effect of this on the intraday scale and small storage capacity is considerable, but rarely analyzed. This study examines the world’s largest dual-cascade hydro-junction, the Three Gorges Dam and Gezhouba Dam junction, as a case study, adopting eight indices to characterize the reservoir’s inflow and outflow fluctuation. In doing this, we evaluate the alteration of the flow regime induced by an up-cascade reservoir and its alleviat
APA, Harvard, Vancouver, ISO, and other styles
37

Ismaeel, Nooruldeen Q., Sarmad K. Ibrahim, and A. Hajer Najah. "Enhancement of Cognitive Radio Spectrum with Proposed Cascade Filter Model." Webology 19, no. 1 (2022): 1282–96. http://dx.doi.org/10.14704/web/v19i1/web19086.

Full text
Abstract:
The use of the frequency spectrum has become an urgent necessity, especially in the advanced generations of communications and various types of transmitted data. The radio spectrum is not being exploited effectively, primarily due to the current strict frequency allocation scheme. Only few bands of the spectrum are heavily utilized, such as those used for wireless base stations. Many bands are either not used at all or are only used infrequently. This problem has been solved through cognitive radio (CR) technology. CR technology faces many challenges in finding the unused frequency spectrum, e
APA, Harvard, Vancouver, ISO, and other styles
38

Yang, Yi, and Ru Chen. "Spectral Kinetic-Energy Fluxes in the North Pacific: Definition Comparison and Normal- and Shear-Strain Decomposition." Journal of Marine Science and Engineering 10, no. 8 (2022): 1148. http://dx.doi.org/10.3390/jmse10081148.

Full text
Abstract:
The spectral kinetic-energy flux is an effective tool to analyze the kinetic-energy transfer across a range of length scales, also known as the kinetic-energy cascade. Three methods to calculate spectral energy fluxes have been widely used, hereafter the ΠA, ΠF, and ΠQ definitions. However, the relations among these three definitions have not been examined in detail. Moreover, the respective contribution of the normal strain and shear strain of the flow field to kinetic-energy cascade has not been estimated before. Here, we use the kinetic energy equations to rigorously compare these definitio
APA, Harvard, Vancouver, ISO, and other styles
39

Zheng, Zheng, and Fei Yan. "Research on Cascade Multilevel Inverter Control Strategy." Applied Mechanics and Materials 273 (January 2013): 439–43. http://dx.doi.org/10.4028/www.scientific.net/amm.273.439.

Full text
Abstract:
Due to easy realization and high equivalent carrier frequency, the Carrier Phase-Shifted pulse width modulation technology has been applied in the multilevel modulation circuit. Space vector modulation technology has a wide range application because it is easy to realize and has the advantage of high DC voltage utilization. However, when it is directly used in a cascade inverter system, it becomes difficult to be realized because of the too many synthesis voltage vectors and switch states. This paper puts forward a new control strategy based on the technology of carrier phase-shift and vector
APA, Harvard, Vancouver, ISO, and other styles
40

Cao, Zhiyuan, Bo Liu, Ting Zhang, and Yibing Xu. "Design strategies and numerical simulation of highly loaded aspirated compressor blades." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 4 (2017): 315–36. http://dx.doi.org/10.1177/0957650917736921.

Full text
Abstract:
Boundary layer suction can effectively eliminate flow separations and increase aerodynamic loading of axial compressors. The design methodology of highly loaded aspirated compressor blades was developed and illustrated in this study. In this work, Computational Fluid Dynamics (CFD) methods were first validated with existing data and then used to develop the design strategy of aspirated compressor blades. Design strategies for higher blade performances, including higher loading, larger stall margin and larger blade thickness near the suction slot of aspirated blades, were investigated through a
APA, Harvard, Vancouver, ISO, and other styles
41

Arnav Madan. "Face Recognition using Haar Cascade Classifier." January 2021 7, no. 01 (2021): 85–87. http://dx.doi.org/10.46501/ijmtst070119.

Full text
Abstract:
With development of machine learning technology many applications have been revolutionized which earlier usedto utilize high amoun to fresources. Face recognition is a crucial security application. Though this paper we present this application using optimized amount of resources and high efficiency.
APA, Harvard, Vancouver, ISO, and other styles
42

GORDANA, KOPILOVIĆ, and GAŠIĆ DUŠANKA. "PRODUCTION OF CASCADE CHRYSANTHEMUMS INPUBLIC UTILITY COMPANY "GRADSKO ZELENILO" NOVI SAD." Contemporary Agriculture (2013) 62, no. 3-4 (2013): 160–67. https://doi.org/10.5281/zenodo.7256993.

Full text
Abstract:
The study was conducted in a semi-controlled greenhouse conditions in the nursery of the Public Utility Company "Gradsko zelenilo" in Novi Sad. In order to broaden the range of potted chrysanthemum, in addition to multi-flowered ones, four new varieties suitable for getting cascade chrysanthemumsare introduced experimentally in the manufacturing, whose production required special breeding technology. Testing decorative features included measurement of cascades'lengthas well as numberof flowers per dm² of a plant, and measurement parameters are presented in tables and ch
APA, Harvard, Vancouver, ISO, and other styles
43

Sagar, Chinchorkar, Silag Manoj, and Najan Vaibhav. "VEHICLE DETECTION USING HAAR CASCADE." JournalNX - A Multidisciplinary Peer Reviewed Journal QIPCEI2K18 (April 30, 2018): 143–44. https://doi.org/10.5281/zenodo.1411813.

Full text
Abstract:
Vehicle detection is an important part of traffic inspection system. In this paper we outline a vehicle detection technique which could be used in vehicle inspection system. An intelligent vehicle inspection system uses an advance features with electronic devices which are used for analysis the traffic problem. So the first step is to detect the vehicle.The system uses Haar like featurecascading technology.Its a machine learning technology which uses positive and negative images for training purpose. https://journalnx.com/journal-article/20150591
APA, Harvard, Vancouver, ISO, and other styles
44

Chabokpour, Jafar, Barkha Chaplot, Mehdi Dasineh, Amir Ghaderi, and Hazi Md Azamathulla. "Functioning of the multilinear lag-cascade flood routing model as a means of transporting pollutants in the river." Water Supply 20, no. 7 (2020): 2845–57. http://dx.doi.org/10.2166/ws.2020.181.

Full text
Abstract:
Abstract The purpose of this paper is to use the application of the multilinear lag cascade model as a contaminant transport model through river networks. Monocacy River and Antietam Creek data, which were collected by USGS with different reach lengths and discharge conditions, have been used in the current study. It was found that the multilinear discrete lag-cascade (MDLC) model is capable of reconstructing contaminant breakthrough curves. A complete study was performed to estimate the reach length for use in the accurate simulation, and it was concluded that by assuming a uniform flow throu
APA, Harvard, Vancouver, ISO, and other styles
45

Soloviev, Dmitry Aleksandrovich, and Larisa Anatolyevna Zhuravleva. "Robotic irrigation complex “CASCADE”." Agrarian Scientific Journal, no. 1 (January 22, 2020): 74–78. http://dx.doi.org/10.28983/asj.y2020i1pp74-78.

Full text
Abstract:
The article considers the possibility of improving irrigation technology by expanding the functions of the automation system, the introduction of digital technologies and intelligent-advising control systems. The developed control system installed on the irrigation complex “CASCADE” provides control of the irrigation complex and pumping station with the transmission of information to the operator panel, followed by processing and analysis of data. Made on the basis of a programmable logic controller allows you to ensure timely watering with the introduction of the necessary fertilizers and pes
APA, Harvard, Vancouver, ISO, and other styles
46

Vrečko, Darko, Nadja Hvala, Aljaž Stare, et al. "Improvement of ammonia removal in activated sludge process with feedforward-feedback aeration controllers." Water Science and Technology 53, no. 4-5 (2006): 125–32. http://dx.doi.org/10.2166/wst.2006.098.

Full text
Abstract:
In the paper three linear aeration controllers that can be easily implemented are presented and evaluated on the activated sludge process pilot plant. Controllers differ according to the information that is used about the process, which can be oxygen in the last aerobic reactor, ammonia in the last aerobic reactor and ammonia in the influent. The aeration controllers that are addressed are: oxygen cascade PI controller, ammonia cascade PI controller and ammonia feedforward-cascade PI controller. Experiments show that, in comparison with the oxygen cascade PI controller, the ammonia cascade PI
APA, Harvard, Vancouver, ISO, and other styles
47

Pinheiro Ferreira, Vitor, Micael Lima Conceição, and William Souza dos Santos. "EXPERIMENTAL EVALUATION OF A CASCADE REFRIGERATION SYSTEM USING R-134a AND R-404a." RECIMA21 - Revista Científica Multidisciplinar - ISSN 2675-6218 3, no. 2 (2022): e321127. http://dx.doi.org/10.47820/recima21.v3i2.1127.

Full text
Abstract:
Cascade refrigeration system is an attractive technology for low-temperature requirement, allowing operation under these conditions with positive suction pressures and a moderate condensation pressure at ambient temperature. This work describes a performance analysis of a cascade refrigeration prototype equipped with hermetic compressors working with R-134a and R-404a as refrigerants, thermally connected by a tube-in-tube-type cascade-condenser. Energy flows and performance parameters were evaluated under different evaporating temperature conditions of the low temperature cycle (LTC). The resu
APA, Harvard, Vancouver, ISO, and other styles
48

Zhang, Song, Ting Hu, Man Zhou, and Xing’e Hu. "Dynamic coordination and control technology of the operating water level during flood season and its application in Xiluodu-Xiangjiaba - Three Gorges cascade reservoirs." E3S Web of Conferences 346 (2022): 02003. http://dx.doi.org/10.1051/e3sconf/202234602003.

Full text
Abstract:
To satisfy the increasing multi-objective scheduling requirements in flood season of the Xiluodu-Xiangjiaba - Three Gorges multi-function cascade reservoir system located in the lower reaches of Jinsha River and the upper reaches of Yangze River, and simultaneously solve the key technical problems of the resource utilization of floods by joint optimal scheduling of cascade reservoirs. This paper explorers and presents a scientific solution of joint dynamic control of the reservoirs’ operating water level during flood season that suitable for the flood resources comprehensive utilization of the
APA, Harvard, Vancouver, ISO, and other styles
49

Pereira, L. "Cascade to black." IEEE Power and Energy Magazine 2, no. 3 (2004): 54–57. http://dx.doi.org/10.1109/mpae.2004.1293601.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Wu, Wanyang, and Jingjun Zhong. "Experimental investigation of the influence on compressor cascade characteristics at high subsonic speed with pressure surface tip winglets." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 235, no. 6 (2021): 1257–71. http://dx.doi.org/10.1177/0957650921990198.

Full text
Abstract:
To investigate the influence of tip winglets on the tip leakage flow in a compressor cascade with different incidences, the experimental measurement combined with numerical simulation are used to study the conventional cascade and cascades with three different pressure surface tip winglets at five incidences of −6°, −3°, 0°, +3° and +6°. The results indicate that three different tip winglets at five incidences all restrain the occurrence of leakage flow, delay the mixing of leakage flow and the mainstream, change the formation path of leakage vortex and weaken its intensity, reduce the flow lo
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!