Relevant bibliographies by topics / Skew-angle

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Skew-angle'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 June 2025

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

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Skew-angle.'

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.

Journal articles on the topic "Skew-angle"

1

Nnonyelu, Chibuzo Joseph, Meng Jiang, and Jan Lundgren. "A Lower Bound on the Estimation Variance of Direction-of-Arrival and Skew Angle of a Biaxial Velocity Sensor Suffering from Stochastic Loss of Perpendicularity." Sensors 22, no. 21 (2022): 8464. http://dx.doi.org/10.3390/s22218464.

Full text
Abstract:
The biaxial velocity sensor comprises two nominally perpendicular particle velocity sensors and a collocated pressure sensor. Due to real-world imperfections in manufacturing or setup errors, the two axes may suffer from perpendicularity losses. To analytically study how skewness affects its direction-finding performance, the hybrid Cramér-Rao bound (HCRB) of the directions-of-arrival for the polar angle, azimuth angle and the skew angle of a biaxial velocity sensor that suffers from stochastic loss of perpendicularity were derived in closed form. The skew angle was modeled as a zero-mean Gaussian random variable of a known variance, which was assumed to be very small, to capture the uncertainty in the orthogonality of the biaxial velocity sensor. The analysis shows that for the polar and azimuth angle, the loss of perpendicularity introduces the variation of the HCRB along the azimuth angle axis, which is independent of the skew angle, but on its variance. The dynamic range of this variation increases as the variance of the skew angle increases. For the estimation of the skew angle, the HCRB of the skew angle is bounded upwards by the variance of the skew angle and varies with the azimuth angle. The hybrid maximum likelihood- maximum a posterior (hybrid ML/MAP) estimator was used to verify the derived bounds.
APA, Harvard, Vancouver, ISO, and other styles
2

H. M. Ali, Abdelhameed, and Anwar Adam Ahmed. "Effect of Skew Angle on Bridge Superstructures." FES Journal of Engineering Sciences 9, no. 1 (2021): 43–48. http://dx.doi.org/10.52981/fjes.v9i1.656.

Full text
Abstract:
In this paper, the effect of skew angle on reinforced concrete skew bridge decks is presented by using the grillage analogy. The actual deck system of the bridge is represented by an equivalent grillage of longitudinal and transverse beams. A span 26m of simply supported bridge deck is taken as the case study to obtain the values of the bending moment' s distribution versus span length for the one type of skewness and the results are compared against the moments of the right deck span of the bridge. The analysis results were based (BS5400) dead and live loads using Structural Analysis program (SAP2000). The analysis provided useful information about the variation of moments and shear forces with respect to change in skewness. It is concluded that in skew bridge deck, the bending moment is decreased, but torsional moments and shear forces are increased by increasing the skew angle. It is noticed that the maximum bending moment at skew angle 55o, by 76% in comparison with zero skew angle. On the other hand the maximum torsional moment increases for the same skew angle (55o) more than five times than with zero skew angles.
APA, Harvard, Vancouver, ISO, and other styles
3

Fadhil, Ghaidak A. "EFFECTS OF SKEW ANGLE ON BENDING MOMENT'S DISTRIBUTION IN THE SKEW BRIDGE DECK." Journal of Engineering 14, no. 04 (2024): 3245–56. http://dx.doi.org/10.31026/j.eng.2008.04.28.

Full text
Abstract:
In this paper the effect of skew angle on reinforced concrete skew bridges deck is presented by using the grillage analogy. The actual decking system of the bridge is represented by an equivalent grillage of beams. A span 24 m of simply supported right bridge deck with I-section prestressed concrete girders is taken as the case study to obtain the values of the bending moment's distribution for the two types of skewness (types 1 and 2) and the results of skew types are compared against the moments of the right deck span of the bridge. In the skew type 1 the deck span is increased as skew angle increased while in type 2 there is no increase in the desk span. The analysis results for the span are obtained dead and live loads (Iraqi standard load and walkway loading) using STAADPRO computer program. The analysis provided useful information about the variation of moments with respect to change in skewness. It is concluded that in skew bridge deck, the bending moment is increased with increasing the skew angle in skew type 1 while it is decreased with increasing the skew angle in skew type 2 and the negative bending moment in transverse direction and the torsion are increased.
APA, Harvard, Vancouver, ISO, and other styles
4

Srinivasa, C. V., Y. J. Suresh, and W. P. Prema Kumar. "Experimental and Finite Element Studies on Free Vibration of Skew Plates." International Journal of Applied Mechanics and Engineering 19, no. 2 (2014): 365–77. http://dx.doi.org/10.2478/ijame-2014-0024.

Full text
Abstract:
Abstract The present paper deals with the experimental studies carried out on free vibration of isotropic and laminated composite skew plates. The natural frequencies were also determined using QUAD8 finite element of MSC/NASTRAN and a comparison was made between the experimental values and the finite element solution. The effects of the skew angle and aspect ratio on the natural frequencies of isotropic skew plates were studied. The effects of the skew angle, aspect ratio, fiber orientation angle and laminate sequence (keeping the number of layers constant) on the natural frequencies of antisymmetric composite laminates were also studied. The experimental values of natural frequencies are in good agreement with the FE solutions. The natural frequencies are found to increase with an increase in the skew angle. The variation of natural frequencies with the aspect ratio is small and negligible both for isotropic and laminated composite skew plates.
APA, Harvard, Vancouver, ISO, and other styles
5

Memar, Sargol, Mohammad Zounemat-Kermani, Ali-Asghar Beheshti, Giovanni De Cesare, and Anton J. Schleiss. "Investigation of local scour around tandem piers for different skew-angles." E3S Web of Conferences 40 (2018): 03008. http://dx.doi.org/10.1051/e3sconf/20184003008.

Full text
Abstract:
In the present study the effect of the skew-angle of the alignment of tandem piers on local scour depth around them is investigated. The tandem piers were aligned with different skew-angles of θ=0°,30°,45°,60°,90° with respect to the flow direction. The results indicatethat with the increment of the skew-angle, the influence of sheltering effects is decreased. In other word, since the sheltering effect of the upstream pier is declined (which reduces the approach velocity for the downstream pier) the scour depth around downstream pier increases. The results show that the maximum scour depth occurs at both piers for the skew-angle of θ=45°.Furthermore, the best configuration to aligned tandem piers was achieved at the skew-angle of θ=30°.
APA, Harvard, Vancouver, ISO, and other styles
6

Habib, Ibtesam Abudallah, Wan Hanna Melini Wan Mohtar, Atef Elsaiad, and Ahmed El-Shafie. "Nose-Angle Bridge Piers as Alternative Countermeasures for Local Scour Reduction." Baltic Journal of Road and Bridge Engineering 13, no. 2 (2018): 110–20. http://dx.doi.org/10.7250/bjrbe.2018-13.405.

Full text
Abstract:
This study investigates the performance nose-angle piers as countermeasures for local scour reduction around piers. Four nose angles were studied, i.e., 90°, 70°, 60° and 45° and tested in a laboratory. The sediment size was fixed at 0.39 mm whereas the flow angle of attack (or skew angle) was varied at four angles, i.e., skew angles, i.e., 0°, 10°, 20° and 30°. Scour reduction was clear when decreasing nose angles and reached maximum when the nose angle is 45°. Increasing the flow velocity and skew angle was subsequently increasing the scour profile, both in vertical and transversal directions. However, the efficiency of nose angle piers was only high at low Froude number less than 0.40 where higher Froude number gives minimal changes in the maximum scour depth reduction. At a higher skew angle, although showed promising maximum scour depth reduction, the increasing pier projected width resulted in the increase of transversal lengths.
APA, Harvard, Vancouver, ISO, and other styles
7

Srinivasa, Chikkol Venkateshappa, Yalaburgi Jayadevappa Suresh, and Wooday Puttiah Prema Kumar. "Finite element studies on buckling of laminated cylindrical skew panels." Science and Engineering of Composite Materials 21, no. 4 (2014): 551–58. http://dx.doi.org/10.1515/secm-2013-0204.

Full text
Abstract:
AbstractThe present paper presents the finite element studies made on critical buckling load of isotropic and laminated composite cylindrical skew panels. Analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. It is found that the CQUAD8 element yields better results compared to the CQUAD4 element in terms of accuracy and convergence. Using the CQUAD8 element, the effects of the panel angle, skew angle, aspect ratio, and length-to-thickness ratio on the critical buckling load of isotropic cylindrical skew panels have been studied. The effects of additional parameters such as fiber orientation angle, numbers of layers (NL), and stacking sequence on the critical buckling load of laminated composite cylindrical skew panels have also been studied. The critical buckling loads are found to increase with the increase in panel angle and skew angle. When the NL in the laminate is large, the variation of the critical buckling load with the NL is not appreciable. The boundary conditions are found to have significant influence on the critical buckling load.
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Jian Hua, Ping Li, Xiao Dan Li, and Yi Wen Wang. "A Skew Detection Algorithm for PDF417 Based on Feature Point." Applied Mechanics and Materials 128-129 (October 2011): 495–99. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.495.

Full text
Abstract:
The automatic identification of 2D (two dimensional) bar code PDF417 is very sensitive to skew angle, but, the common skew angle detection methods have shortcomings such as weak performance in time complexity. In this paper, based on the properties of PDF417 character code and the extraction of feature points, we get skew angle of PDF417 bar code image using the least square method. Experiments show that this algorithm has virtue of less computation and high accuracy.
APA, Harvard, Vancouver, ISO, and other styles
9

Chikkol, Srinivasa Venkateshappa, Prema Kumar Puttiah Wooday, and Suresh Jayadevappa Yelaburgi. "Buckling of laminated composite cylindrical skew panels." Journal of Thermoplastic Composite Materials 30, no. 9 (2015): 1175–99. http://dx.doi.org/10.1177/0892705715618741.

Full text
Abstract:
Experimental studies were made on isotropic cylindrical skew panels made of Aluminum 7075-T6 and laminated composite cylindrical skew panels under uniaxial compression. The experimental values of the critical buckling load ( Pcr) were determined using five different methods. The values of Pcr were also determined using MSC/Nastran and CQUAD8 finite element. The experimental values of the Pcr obtained by different methods were compared with the finite element solution. The effects of the skew angle and aspect ratio on the critical buckling load of isotropic cylindrical skew panels made of Aluminum 7075-T6 were studied. The effects of the skew angle, aspect ratio, and the laminate stacking sequence on the critical buckling load of laminated composite cylindrical skew panels were also studied. It is found that the method IV (based on a plot of applied load ( P) vs. average axial strain) yields the highest value for Pcr and method III (based on a plot of P vs. square of out-of-plane-deflection) the lowest value for Pcr. The experimental values given by method IV are seen to be closest to the finite element solution, the discrepancy being in the range of 5–23% for laminated composite cylindrical skew panels. For isotropic panels, it is found that the value Pcr initially increases with an increase in the skew angle and later decreases as the skew angle increases beyond 15°. For laminated composite panels, the Pcr value decreases as the aspect ratio increases for all laminate stacking sequences.
APA, Harvard, Vancouver, ISO, and other styles
10

MISS., KSHITIJA S. BALWAN, V. G. KHURD MR., and S. S. CHOUGULE MR. "TO STUDY THE RESPONSES OF BRIDGE DECK FOR VARIOUS SKEW ANGLES." JournalNX - a Multidisciplinary Peer Reviewed Journal 3, no. 9 (2017): 35–37. https://doi.org/10.5281/zenodo.1420608.

Full text
Abstract:
he objective of this study was to understand the meaning of skew bridge. To know the behavior of skew deck. In this work, the effect of change of skew angles for right bridge deck is studied by finite element method. Bending moment, support reaction and torsional moment are computed by using FEM in CSI BRIDGE and results are compared for different skew angles. Simple supported single span bridge deck is considered for this study. The results by analysis shows that as the skew angle increases, support reaction increases, but bending moment decreases and torsion moment also increases. The effect of skewness on the behavior of bridge deck is studied for skew angle 15°, 30° and 45° and presented graphically using FEM method. Results are presented for analysis method for dead load and live load. https://journalnx.com/journal-article/20150437
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Skew-angle"

1

Bengtsson, Pär, and Johan Wallin. "Analysis of a Prefabricated Concrete Skew Angle Slab Bridge." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-81146.

Full text
Abstract:
Prefabricated concrete elements are widely used in the construction industry today. With advantages such as time savings, increased safety at the construction site and minimized material usage, prefab becomes a major challenger to the traditional on-site casting construction method. However, constructing a bridge in concrete still presents challenges when using prefab as a construction method. Hence, more research in the area is needed. This master thesis has been studying the behavior of a prefabricated skew angle slab and the connection between the slab and wall elements of a bridge. The study was conducted using a finite element software, where three 3D-models of skew angle slabs were created. The three models had different skew angles (0, 15 and 30 degrees) and crossed the same path. The models could represent both the slab and the slab-wall connection. The finite element analysis showed that slabs with angles up to 15 degrees could be designed as a straight bridge. However, when the skew angle increases to 30 degrees, the behavior of the slab and connection changes significantly. Furthermore, the results show that a stress concentration occurs in the obtuse corner and that the stress increases when the skew angle increases. Moreover, there is a slight uplift in the acute corner when the skew angle increases to 30 degrees.
APA, Harvard, Vancouver, ISO, and other styles
2

Kocis, Shawn M. "Prototyping and characterization of an adjustable skew angle single gimbal control moment gyroscope." Thesis, Monterey, California: Naval Postgraduate School, 2015. http://hdl.handle.net/10945/45208.

Full text
Abstract:
Approved for public release; distribution is unlimited<br>This thesis is the second phase of development of an open architecture control moment gyroscope (CMG). The focus is on designing an adjustable skew angle single gimbal CMG frame, and integrating a previously developed momentum wheel assembly into it. The result of this phase is a fully operational CMG that can be used to retrofit the NPS Reconfigurable Satellite Autonomy Testbed (R-SAT). The open architecture design allows for both hardware and software upgrades to the R-SAT Attitude Determination and Control System (ADCS). This capability is vitally important in order to support the development and testing of new satellite control algorithms that can be used to improve the agility and efficiency of satellite maneuvers. The CMG developed in this project is capable of delivering 7.79 Nm of output torque at the standard gimbal rate of 1 rad/s. The CMG power consumption ranges between 50W and 100W. 4. SUBJECT TERMS Control Moment Gyroscope, Control Moment Gyro, gimbal, momentum wheel, momentum wheel assembly, skew angle, adjustable skew angle, back drive, open architecture
APA, Harvard, Vancouver, ISO, and other styles
3

Arenas, Alfredo Eduardo. "Thermal Response of Integral Abutment Bridges With Mse Walls: Numerical Analyses and a Practical Analysis Tool." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/30134.

Full text
Abstract:
The advantages of Integral Abutment Bridges (IABs) include reduced maintenance costs and increased useful life spans. However, comprehensive and practical analysis tools for design of IABs have not been developed to account for the impacts of thermal displacements on abutment and foundation components, including the components of mechanically stabilized earth (MSE) walls that are often used around the abutment piling. During this research, over 65 three-dimensional numerical analyses were performed to investigate and quantify how different structural and geotechnical bridge components behave during thermal expansion and contraction of the bridge deck. In addition, separate three-dimensional numerical models were developed to evaluate the usefulness of corrugated steel pipes around the abutment piles. The results of this research quantify the influence of design parameter variations on the effects of thermal displacement on system components, and thus provide guidelines for IAB design, where none had existed before. One of the findings is that corrugated steel pipes around abutment piles are not necessary. One of the most important products of this research is an easy-to-use Excel spreadsheet, named IAB v2, that not only quantifies the impact of thermal displacement in the longitudinal direction, but also in the transverse direction when the abutment wall is at a skew angle to the bridge alignment. The spreadsheet accommodates seven different pile sizes, which can be oriented in weak or strong directions, with variable offset of the abutment from the MSE wall and for variable skew angles. The spreadsheet calculates the increment of displacements, forces, moments, and pressures on systems components due to thermal displacement of IABs.<br>Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
4

Bäck, Pär. "Control of Torsionalpendulum on Containercranes." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2245.

Full text
Abstract:
<p>A container crane of STS-type, Ship To Shore, consists of a spreader hanging underneath a railrunning trolly. As the container is under the influence of wind, it is likely that it starts to turn in a torsional pendulum. This report handles how the torsional pendulum of a container crane can be damped. </p><p>A number of different models have been developed to analyze how different placement of the actuators affects the system. Two differens types of controllers, LQG and MPC, have been developed and applied to these models. The different models and controlers were evaluated and compared by studying simulation results in timedomain. Moreover in order to make the simulations more realistic, a wind model has been developed and applied. </p><p>The models and controllers have been analyzed with bodediagrams and sensitivity functions. </p><p>The analyses shows clearly that the best placement of the actuators for control of the torsional pendulum on an STS-crane is in the trolly, pulling and relaxing the wires. This control is best handled by a state feedback control (LQG). Furthermore, the control should in this way, with addition of in the horizontalplane movable suspensions in the trolly, work acceptably in the whole operational area of a STS-crane.</p>
APA, Harvard, Vancouver, ISO, and other styles
5

Lin, Yi-Fong, and 林逸鋒. "Motion and Structure Analysis of Cycloidal Speed Reducer with Skew Angle Design." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/m5yyeu.

Full text
Abstract:
碩士<br>國立虎尾科技大學<br>創意工程與精密科技研究所<br>98<br>This paper presented is design of the cycloid drives gear tooth profile. This goal is in to solve the question of the speed reduce with the vibration and make the work effectively. The discussion about Dynamic simulation analysis and structure analysis using the design of the cycloid drives gear tooth profile. From the analysis compare their differences: new gear tooth profile and skew angle design of the traditional cycloid gear. Using the Solid Works to build a new project of gear tooth profile and prove the curve of mathematic model is correct. At first, using the COSMOSMotion and the COSMOSWorks corresponding three major parts of the manufactured component speed reduce increase moment with dynamic simulation analysis and structure analysis, obtained angular velocity with movement variation curve and structure stress variation. And then, run an integral whole analysis. Then observes the vibration of the gear tooth during the operations and analyzes the influence of the structure stress variation. The gear tooth profile α3.5° is able to improve the vibration of cycloid drives gear tooth profile and the moment average value.The results found in the current study will shed some lights on the research of cycloid drives gear tooth profile for the academia and industry.
APA, Harvard, Vancouver, ISO, and other styles
6

Chen, Wei-jie, and 陳韋榤. "Applying the fast generalized Hough transform to skew vehicle license plate location and angle estimation." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/10640165326562787812.

Full text
Abstract:
碩士<br>國立臺灣科技大學<br>高分子系<br>97<br>License plate locate system plays an important role in the intelligent transportation systems. Most of license plate locate systems can deal with the situation when the license plate image is taken from license plate’s front. However, if the license plate has a skew angle in the image, the shape of license plate will change. This kind of change brought most of license plate locate systems can not locate the license plate correctly. Fast generalized Hough transform apply the voting process to detect arbitrary shape’s scale, rotation, and shift parameters in the image. This paper combine the fast generalized Hough transform with 3D coordinate transformation to detect the skew angle of the plate, the ratio of the shape-changed plate (in vertical and horizontal direction), and the location of the plate. The effectiveness of the propose method has been confirmed by some actual images taken by a normal digital camera.
APA, Harvard, Vancouver, ISO, and other styles
7

Tu, Tsung-Hsien, and 涂聰賢. "An Experimental Investigation on Noise Reduction and Internal Flow Visualization of a Cross-Flow Fan with Rotor-Skew-AngleSkew-Angle." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/zww2b3.

Full text
Abstract:
博士<br>國立臺北科技大學<br>機電科技研究所<br>97<br>The rotor-skew-angle design was proposed in this research for lowering the cross-flow-fan emitted noise, especially for the significantly narrow band noise accompanying with the blade operation. Following 0, 5, and 10 degree of rotor-skew-angle designs, the cross-flow fan radiated noise and its sound quality were evaluated. The pressure fluctuations were measured at different positions along the axial direction on the tonge. The coherence analysis was utilized for illustrating the blade passing frequency cancellation mechanism. A 3-D flow visualization method, which overcame the blind slight from LDV and PTV, was used to present the differences of internal flow patterns. The experimental results indicated that RSA-5, which was a rotor with a nearly a pitch skewed within impeller’s two end shrouds, had a lower sound emission and little pressure drops relative to that of no skew-angle case, RSA-0. RSA-10, two pitches twisting case, also had a better acoustics quietness than that of RSA-0, but it exited undesired noise in high frequency components around 2 – 4 kHz (3rd and 4th harmonics of the blade passing frequency). In this research, for a compromise between flow and acoustics performance, RSA-5 showed the most suitable design for cross-flow fan rotor.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Skew-angle"

1

Manomathi, M., and S. Chitrakala. "Skew Angle Estimation and Correction for Noisy Document Images." In Advances in Computing and Communications. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22720-2_43.

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

Kulkarni, Unnati Raju, Hemant Goraksh Ghuge, Revati Anand Kulkarni, and Kirti Vasant Thakur. "An Algorithm for Skew Angle Estimation and It’s Application Domain." In Lecture Notes in Electrical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8391-9_37.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sreevishnu, Unnikrishnan, A. R. Arathi, and M. Harikrishna. "Influence of Skew Angle on the Gap Parameters at Uncontrolled Intersections." In Proceedings of the Sixth International Conference of Transportation Research Group of India. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3494-0_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ramakrishna, V., D. A. Rao, Ch Sankara Rao, P. V. S. Ganesh Kumar, T. Gunasekhar, and V. Mani kumar. "Noise Control of a Marine Propeller by Modifying the Skew Angle." In Recent Developments in Acoustics. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5776-7_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Rocha, Bruno, Gabriel Vieira, Helio Pedrini, et al. "Skew Angle Detection and Correction in Text Images Using RGB Gradient." In Image Analysis and Processing – ICIAP 2022. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06430-2_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hraib, Faress, Li Hui, Miguel Vicente, and Riyadh Hindi. "Effect of Skew Angle on the Rotation of Exterior Girders During Construction." In Springer Tracts on Transportation and Traffic. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59169-4_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wang, Peisen, Bo Wang, Xixi Nie, Chunyi Guo, and Kaijiang Li. "MLR-NET: An Arbitrary Skew Angle Detection Algorithm for Complex Layout Document Images." In Lecture Notes in Computer Science. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-8511-7_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Satomi, M., R. Handa, Y. Sugimoto, and H. Onishi. "A study of the effect of skew angle on natural frequencies of bridge girders." In Bridge Maintenance, Safety, Management, Digitalization and Sustainability. CRC Press, 2024. http://dx.doi.org/10.1201/9781003483755-253.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Chatterjee, Dona, Arghya Ghosh, and Dipankar Chakravorty. "On Nonlinear First Ply Failure Behaviour of Angle Ply Composite Thin Skew Plates Using FEM." In Structural Integrity. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98335-2_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ravikumar, M., B. J. Shivaprasad, G. Shivakumar, and P. G. Rachana. "Estimation of Skew Angle from Trilingual Handwritten Documents at Word Level: An Approach Based on Region Props." In Advances in Intelligent Systems and Computing. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3393-4_43.

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

Conference papers on the topic "Skew-angle"

1

Kong, Yong-Boon, Jeewoong Kim, J. V. R. Prasad, and Lakshmi Sankar. "Finite State Coaxial Rotor Inflow Model Improvements via System Identification." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11498.

Full text
Abstract:
For real-time rotor inflow calculations, the finite state inflow models are commonly used due to the fact that they are more computationally efficient compared to CFD models. For coaxial rotor configuration, the finite state Active-Receiving Rotor Inflow Model (ARRIM) developed from potential flow theory, was shown to correctly predict power variations with rotor thrust in hover. However, potential flow theory cannot capture the complex aerodynamic interactions between upper and lower rotors in forward flight. In order to address this problem, a system identification approach is used to quantify both rotors' mutual interference effects using results from GT-Hybrid, a high-fidelity free-wake model. There are significant differences in wake skew angles predicted by GT-Hybrid and those calculated using momentum theory. Corrections needed in ARRIM influence coefficient matrix (L-matrix) in capturing wake distortions due to rotor-to-rotor flow interactions are identified. The identified results show a linear correlation between the required corrections to the wake skew angle and advance ratio. ARRIM with the identified wake skew angle and L-matrix corrections is implemented in FLIGHTLAB R and is seen to improve its inflow predictions.
APA, Harvard, Vancouver, ISO, and other styles
2

Peters, David, Morgan Nowak, Jianzhe Huang, and JVR Prasad. "Converged Velocity Field for Rotors by a Blended Potential Flow Method." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9551.

Full text
Abstract:
Potential-flow solutions for rotor induced flow by the He method give good convergence on the disk but can provide only a crude approximation off of the disk. The Morillo-Duffy formulation can give all three components off the disk, but the results converge poorly on the disk. Furthermore, Morillo-Duffy solutions converge very slowly for the velocity downstream in the limit as wake skew angle approaches 90° (edgewise flow). In this work, new variables––called the Nowak-He variables––are introduced that provide both the He velocity and the Morillo-Duffy velocity from a single set of states. In addition, an approximate downstream velocity field is obtained from the adjoint theorem that gives the exact downstream velocity as skew angle approaches 90°. The blending of these three velocity fields is shown to give robust and accurate convergence to the potential-flow equations at all flight conditions.
APA, Harvard, Vancouver, ISO, and other styles
3

Le, Daniel X., and George R. Thoma. "Document skew-angle detection algorithm." In Optical Engineering and Photonics in Aerospace Sensing, edited by Friedrich O. Huck and Richard D. Juday. SPIE, 1993. http://dx.doi.org/10.1117/12.150957.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Zhang, HaoGuang, WenHao Liu, WuLi Chu, and EnHao Wang. "The Effect of Radial Skew Angles of Blade Angle Slots on the Stability and Performance of an Axial Flow Compressor." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14545.

Full text
Abstract:
Abstract The parametric numerical study was performed to explore the effect of radial skew angles of blade angle slot casing treatment (CT) on the stability and performance of an axial flow subsonic compressor. Five kinds of blade slot casing treatment with difference radial skew angles (0 degree, 30 degrees, 45 degrees, 60 degrees, and 75 degrees) were designed in the numerical investigations. The unsteady calculated results show that among the radial skew angles of 0 degree, 30 degrees, 45 degrees, 60 degrees, the bigger the radial skew angle of the slots is, the greater the stall margin improvement (SMI) generated by the slots is, and the slots with 60 degrees radial skew angle can generate 58.86% SMI. Moreover, the SMI for the slots with 60 degrees radial skew angle is 29.64% more than that for the slots with 75 degrees radial skew angle. Besides, the slots with radial skew angle of 75 degrees cause the least penalty in peak efficiency among five kinds of radial skew angle, and the peak efficiency for the slots with 75 degrees radial skew angle is 0.88% higher than that for smooth wall casing treatment. The slots with 0 degree radial skew angle generate the biggest peak efficiency loss of 5.94% among five kinds of radial skew angle. The flow field analyses show that the recirculated flows formed in the slots can generate momentum transport effects on the flow field in the blade tip. Under the effects of the momentum transport, the momentum balance between the tip leakage flow (TLF) and main flow (MF) is changed, and the momentum balance determines the trajectory of the TLF and the mainstream/tip leakage flows interface. As a result, the flow condition in the tip channel is also changed. By changing the radial skew angle of slots, the slots behave different capacities of momentum transport on the tip flow field, and the momentum balance between tip leakage flow and main flow is changed differently. So, the trajectory of the TLF and the mainstream/tip leakage flows interface are deflected differently. Different improvements of the compressor stability are obtained by the slots with different radial skew angles. The slots with radial skew angle of 60 degrees can largely deflect the trajectory of TLF and the mainstream/tip leakage flows interface to the blade suction surface. It improves the flow condition of the blade tip channel, and the slots generate 58.86% SMI. However, after the slots with radial skew angle of 0 degree and 30 degrees are applied, the tip leakage vortex breakdown is occurred. So, they generate few improvements of the stall margin. Furthermore, the interaction between recirculated flows inside slots and main flows inevitably causes additional flow losses. With the increase of radial skew angle, the efficiency loss caused by slot CT decreases. Thus, the slots with 75 degrees radial skew angle generate the least peak efficiency loss among five kinds of radial skew angle.
APA, Harvard, Vancouver, ISO, and other styles
5

Qi, Xiaorui, Lei Ma, Changjiang Sun, and Jiang Liu. "Fast Skew Angle Detection Algorithm for Scanned Document Images." In 2011 Third Pacific-Asia Conference on Circuits, Communications and System (PACCS). IEEE, 2011. http://dx.doi.org/10.1109/paccs.2011.5990142.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

He, Zhimin, Jianqiang Mou, Kheong Sann Chan, Suet Hoi Lam, Boon Long See, and Wuzhong Lin. "A Near Zero Skew Actuation Mechanism for Hard Disk Drives." In ASME 2013 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/isps2013-2941.

Full text
Abstract:
One of the issues in VCM rotary actuation in hard disk drives (HDDs) is the excessive sensitivity of the system to the skew angle. The rotation of the VCM from the inner diameter (ID) to the outer diameter (OD) of the disk results in an angle of skew between the read/write head and the track. The difference in skew angle, between the ID to the OD can be as large as 25 to 30 degrees in conventional 3.5″ and 2.5″ HDDs. A large skew angle affects the slider’s flying performance and off-track capability, causing an increase in side reading and writing, and thus reduces the achievable recording density. Large skewed actuation also complicates the position error signal calibration process in the hard disk drive servo loop. This paper presents a 4 link mechanism which can be designed to achieve near zero skew actuation in hard disk drives. The profiles of the arm, suspension, and links can be designed and optimized such that the skew angle is close to zero while the VCM actuator rotates from the ID to the OD. Study shows that the 4-link mechanism does not degrade the resonance performance along the tracking direction compared to a conventional actuator.
APA, Harvard, Vancouver, ISO, and other styles
7

Sandnes, Pål Grøthe, Martin Storheim, Ketil Aas-Jakobsen, Rolf Magne Larssen, and Mitja Papinutti. "Effect of skew wind on curved long-span floating bridges." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.1452.

Full text
Abstract:
&lt;p&gt;Long-span floating bridges have a transverse flexibility that give long natural periods. The horizontal profile is typically arch shaped to provide lateral stiffness which makes the skew wind angle (incident angle in the horizontal plane) a function of the position along the bridge. Hence, skew wind effects may be important. In this paper, a wind load module is developed for &lt;i&gt;OrcaFlex &lt;/i&gt;based on classical buffeting theory extended to account for variations of the aerodynamic coefficients with variation of the skew wind angle relative to the bridge. Using this load module, the response of a 3 km floating bridge is investigated with and without skew wind effects.&lt;/p&gt;
APA, Harvard, Vancouver, ISO, and other styles
8

L, Banumathi K., and Jagadeesh Chandra A P. "An Approach to Estimate Skew Angle in Printed Document Images." In 2019 1st International Conference on Advances in Information Technology (ICAIT). IEEE, 2019. http://dx.doi.org/10.1109/icait47043.2019.8987420.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Huiye Ma and Zhenwei Yu. "An enhanced skew angle estimation technique for binary document images." In Proceedings of the Fifth International Conference on Document Analysis and Recognition. ICDAR '99 (Cat. No.PR00318). IEEE, 1999. http://dx.doi.org/10.1109/icdar.1999.791750.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Clifford, G., and D. Henze. "An air rearing minimizing the effects of slider skew angle." In International Magnetics Conference. IEEE, 1989. http://dx.doi.org/10.1109/intmag.1989.690145.

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

Reports on the topic "Skew-angle"

1

Andrawes, Bassem, and Dachina Gunasekaran. Testing, Analysis, and Load Rating of Precast Prestressed Concrete Deck Beams with Transverse Cracks. Illinois Center for Transportation, 2025. https://doi.org/10.36501/0197-9191/25-002.

Full text
Abstract:
This study focused on understanding the impact of transverse cracks on the residual capacity and load rating analysis of in-service precast prestressed concrete (PPC) deck beams. Two decommissioned (33 × 36 and 21 × 36) PPC deck beams were tested under four-point bending loads to assess the impact of transverse cracks on the structural performance of the beams. Finite element and theoretical cracked section analyses were also performed to investigate the capacity of the as-built and cracked PPC deck beam. Transverse cracks reduced the load rating capacity of the 33 × 36 beam by almost 34%, which subsequently reduced the capacity-based load rating factor by 22% under the HS-20 truck load. The experimental investigation of the 21 × 36 PPC deck beam showed that the load required to induce visible cracks in the beam was 95.5% of its AASHTO live load capacity. The load rating of the cracked 21 × 36 beam was 73.6% lower than its as-built capacity, exhibiting a severe reduction in its load-bearing capacity. A parametric study was conducted to understand the effect of the influencing parameters, like the beam geometry and material properties, on the damaged beams’ behavior. For PPC deck beams with rectangular voids, the statistically significant parameters were span length, strand diameter, and skew angle. In the parametric study, the inventory load rating factor of the prestressing strands in tension was predicted to decrease linearly for a crack width up to 0.64 mm, while the capacity inventory rating factor was predicted to decrease up to 73.8% for a crack width of 0.64 mm.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Skew-angle' for particular source types:
Journal articles
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!

To the bibliography