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Journal articles on the topic 'Block Method'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Li, C., H. Chen, X. Han, X. Pan, and D. Niu. "An improved Criminisi method for image inpainting." Journal of Physics: Conference Series 2253, no. 1 (2022): 012023. http://dx.doi.org/10.1088/1742-6596/2253/1/012023.

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Abstract The Criminisi method is a classical image inpainting method, which has flaw of unreasonable priority calculation. To overcome this flaw, we propose an improved Criminisi method. To improve the accuracy of a repaired block’s priority, we propose a novel method by considering the continuity of structure and color information between the repaired block and its adjacent blocks. When searching the matching block for a repaired block, we compute the similar between two blocks as the sum of squared differences (SSD). Since different blocks within an image may contain different levels of info

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2

HE, LEI, and GUOWEI MA. "DEVELOPMENT OF 3D NUMERICAL MANIFOLD METHOD." International Journal of Computational Methods 07, no. 01 (2010): 107–29. http://dx.doi.org/10.1142/s0219876210002088.

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The numerical manifold method (NMM) is a combination of the finite element method (FEM) and discontinuous deformation analysis (DDA) method. It provides a robust numerical solution to a solid medium with dense discontinuities. This paper extends NMM to the three-dimensional domain based on the 2D fundamentals. The general framework of the 3D NMM is introduced, including the cover geometry patterns (GP) with division structure from hexahedron to tetrahedron, and general formulations based on the virtual work principle. The block cutting process to generate discrete blocks are discussed through

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Zhang, Shuo, Dongqing Wang, and Feng Liu. "Separate block-based parameter estimation method for Hammerstein systems." Royal Society Open Science 5, no. 6 (2018): 172194. http://dx.doi.org/10.1098/rsos.172194.

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Different from the output–input representation-based identification methods of two-block Hammerstein systems, this paper concerns a separate block-based parameter estimation method for each block of a two-block Hammerstein CARMA system, without combining the parameters of two parts together. The idea is to consider each block as a subsystem and to estimate the parameters of the nonlinear block and the linear block separately (interactively), by using two least-squares algorithms in one recursive step. The internal variable between the two blocks (the output of the nonlinear block, and also the

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Lv, Xian Qiang, Song Yang, Xin Zhang, Ying Wang, Yun Feng Shi, and Liu Wei. "Fast Fractal Image Coding Method Based on RMSE and DCT Classification." Applied Mechanics and Materials 241-244 (December 2012): 3034–39. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.3034.

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To solve the problem of long time consuming in the fractal encoding process, a fast fractal encoding algorithm based on RMSE (Root mean square error) and DCT (Discrete Cosine Transform) classification is proposed. During the encoding process, firstly, the image is divided into range blocks and domain blocks by quadtree partition according to RMSE, then, according to DCT coefficients of image block, three classes of image blocks are defined, which are smooth class, horizontal/vertical edge class, diagonal/sub-diagonal class. At last, every range block is limited to search the best matched block

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Khafizov, T. M., A. Kh Baiburin, S. E. Denisov, and A. D. Ovchinnikov. "BLOCK-ROOM CONCRETING TECHNOLOGY USING THE DESCENDING CONCRETE METHOD." Bulletin of South Ural State University series "Construction Engineering and Architecture" 23, no. 2 (2023): 73–79. http://dx.doi.org/10.14529/build230209.

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We describe the concrete deposition method for manufacturing concrete products in mobile workshops for the construction of residential buildings consisting of block rooms. A literature review was carried out in the field of volumetric block construction, modular structures, 3D block construction, and prefabricated blocks. We propose a concept of mobile manufacturing. Per this method, three-dimensional blocks of a room for a residential structure are manufactured in a mobile workshop using the patented method of concrete deposition. The workshop is located directly on the construction site or n

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6

Zhu, Feng, Yingkun Hou, and Jingyu Yang. "Block-Matching Based Multifocus Image Fusion." Mathematical Problems in Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/405919.

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A new multifocus image fusion method is proposed. Two image blocks are selected by sliding the window from the two source images at the same position, discrete cosine transform (DCT) is implemented, respectively, on these two blocks, and the alternating component (AC) energy of these blocks is then calculated to decide which is the well-focused one. In addition, block matching is used to determine a group of image blocks that are all similar to the well-focused reference block. Finally, all the blocks are returned to their original positions through weighted average. The weight is decided with

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7

Su, Chao, Yebin Zhao, and Yusong Jiang. "Multibody Finite Element Method and Application in Hydraulic Structure Analysis." Mathematical Problems in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/907620.

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Multibody finite element method is proposed for analysis of contact problems in hydraulic structure. This method is based on the block theory of discontinuous deformation analysis (DDA) method and combines advantages of finite element method (FEM) and the displacement compatibility equation in classical elastic mechanics. Each single block is analyzed using FEM in corresponding local coordinate system and all contacting blocks need to satisfy the displacement compatibility requirement between any two blocks in a blocky system. It is proved that this method is very efficient and practical to ov

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8

Grządziela, Andrzej, Radosław Kiciński, Bogdan Szturomski, and Paweł Piskur. "Determining the Trajectory of the Crane Block Using the Finite Element Method." Naše more 69, no. 2 (2022): 92–102. http://dx.doi.org/10.17818/nm/2022/2.3.

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The paper discusses determining crane block trajectories using the finite element method (FEM). The mathematical formulation for air resistance of hooks’ block is presented with kinematic analysis of the block. The three crane blocks are considered: without wind deflector, with a spherical deflector and a cylindrical fairing. The hook block was assumed as a physical pendulum. The FEM analysis is provided with the hook block movement consideration. Movement trajectories of hook blocks for different wind speeds is depicted and the results are. At the end of the paper, the conclusions are provide

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Griazev, Kiril, and Simona Ramanauskaitė. "Web Page Content Block Identification with Extended Block Properties." Applied Sciences 13, no. 9 (2023): 5680. http://dx.doi.org/10.3390/app13095680.

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Web page segmentation is one of the most influential factors for the automated integration of web page content with other systems. Existing solutions are focused on segmentation but do not provide a more detailed description of the segment including its range (minimum and maximum HTML code bounds, covering the segment content) and variants (the same segments with different content). Therefore the paper proposes a novel solution designed to find all web page content blocks and detail them for further usage. It applies text similarity and document object model (DOM) tree analysis methods to indi

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10

Wang, Jianming, and Jianhua Chen. "An Adaptive Rate Blocked Compressive Sensing Method for Video." Entropy 23, no. 8 (2021): 1002. http://dx.doi.org/10.3390/e23081002.

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An adaptive rate Compressive Sensing (CS) method for video signals is proposed. The Blocked Compressive Sensing (BCS) scheme is adopted in this method. Firstly, each video frame is blocked and measured by the BCS scheme, and then the mean and variance of each image block are estimated by observing the CS measurement results. Using the mean and variance of each image block, the sparsity of the block is estimated and then the block can be classified. Adaptive rate sampling is realized by assigning different sampling rates to different classes. At the same time, in order to make better use of the

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11

Musso, Carlos, Maria C. Silva-Santos, and Fausto E. L. Pereira. "Cotton Block Method." Acta Cytologica 49, no. 1 (2005): 22–26. http://dx.doi.org/10.1159/000326090.

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12

CHAN, Lai-Wan, and Chi-Cheong SZETO. "WEIGHT GROUPINGS IN SECOND ORDER TRAINING METHODS FOR RECURRENT NETWORKS." International Journal of Neural Systems 11, no. 04 (2001): 379–87. http://dx.doi.org/10.1142/s0129065701000849.

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In this paper, we use block-diagonal matrix to approximate the Hessian matrix in the Levenberg Marquardt method during the training of recurrent neural networks. We analyze the weight updating strategies and the groupings of the weights associated with the approximation. Two weight updating strategies, namely asynchronous and synchronous updating methods are investigated. Asynchronous method updated weights of one block at a time while synchronous method updates all weights at the same time. Variations of these two methods, which involve the determination of two parameters μ and λ, are examine

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13

Kovalevsky, V. N., A. V. Mysi, and V. I. Sushkova. "Theoretical aspects of block stone blasting method." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 9, no. 2 (2024): 97–104. http://dx.doi.org/10.17073/2500-0632-2023-12-187.

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Block stone excavation is a key aspect of the building materials industry, important for providing construction with durable materials and when giving aesthetic solutions to various structures and design elements. However, when excavating stone (using drilling and blasting), it is necessary to maintain its integrity for further processing and use. The conditions required for applying the method of blasting separation (split off) of stone blocks from hard rock mass were considered, which is important for improving the quality of blasted stone blocks. The rational parameters of stone block blast

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14

Li, Zhongcheng, Zhidong Bao, Li Chen, et al. "Optimization of EOR Displacement Methods Based on Multiple Factor Analysis." Geofluids 2022 (July 22, 2022): 1–10. http://dx.doi.org/10.1155/2022/6588741.

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In order to ensure that the new block can select the best displacement method, this paper determines 23 key reservoir basic parameters based on the statistical analysis of the field application of the tertiary oil recovery displacement method in typical blocks at home and abroad. The best displacement method is selected by the fuzzy evaluation method, and the correlation degree between the target block and the typical block is calculated by the improved Deng correlation method; then, the ultimate recovery rate of the target block is determined. Taking a new block of an oil field in China as an

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15

WANG, XING-YUAN, FAN-PING LI, and ZHI-FENG CHEN. "AN IMPROVED FRACTAL IMAGE CODING METHOD." Fractals 17, no. 04 (2009): 451–57. http://dx.doi.org/10.1142/s0218348x09004545.

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This paper presents a fast fractal image coding method based on quadtree division, improved neighbor search and asymptotic strategy. We search the optimal matched domain block of a range block in its five nearest neighbor blocks and make asymptotic moves along the direction of potential optimal solution. If the optimal solution can not be improved, we carry out quadtree division for this range block until it caters to our demand or reaches greatest division level. The experimental results show that the coding speed of the proposed method declined slightly, but it has a better quality of recons

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16

Lee, Myungsub. "A Block Classification Method with Monitor and Restriction in NAND Flash memory." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 5 (2021): 209–15. http://dx.doi.org/10.17762/turcomat.v12i5.877.

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In this paper, we propose a block classification with monitor and restriction (BCMR) method to isolate and reduce the interference of blocks in garbage collection and wear leveling. The proposed method monitors the endurance variation of blocks during garbage collection and detects hot blocks by making a restriction condition based on this information. This method induces block classification by its update frequency for garbage collection and wear leveling, resulting in a prolonged lifespan for NAND flash memory systems. The performance evaluation results show that the BCMR method prolonged th

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17

Castelani, Emerson Vitor, Wesley Vagner Inês Shirabayashi, and Ronaldo Lopes. "A note on the equivalence of Broyden and Block ABS methods." Advanced Modeling and Optimization 20, no. 1 (2018): 1–9. https://doi.org/10.5281/zenodo.1288828.

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In this paper we are considering a scaled linear system and presenting a result of equivalence between Broyden’s Method and Block ABS Method applied to this system. As consequence, we have an alternative proof of finite termination for Broyden’s method as showed in  David M Gay. Some convergence properties of broyden’s method. SIAM Journal on Numerical Analysis, 16(4):623–630, 1979.   

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18

Toteva, Pavlina, Dimka Vasileva, and Krasimira Koleva. "Measuring the roundness deviation in the Vblock measurement method." MATEC Web of Conferences 178 (2018): 08016. http://dx.doi.org/10.1051/matecconf/201817808016.

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In this paper the measurement capabilities of form deviation of cylindrical surfaces using V-Block method are studied. The paper presents the influence of the V - Block angle to the ratio coefficient of dimension, and the ratio coefficient of form deviation on the k-harmonic. The equations for the dimension ratio coefficient and the form ratio coefficient of kharmonic are obtained. These equations give the opportunity to choose the most appropriate combination for the V-block angle and the measurement direction, angle β. Studies have been made using V-Blocks with the most common angles by symm

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19

Zhao, Jian, Ming Xiao, Juntao Chen, and Dongdong Li. "Explicit Dynamic DDA Method considering Dynamic Contact Force." Shock and Vibration 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/7431245.

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This paper proposes an explicit dynamic DDA method considering dynamic contact force, which aims at solving the problems of low efficiency of dynamic contact detection and the simulation of dynamic contact force in the conventional DDA method. The mutual contact between blocks can be regarded as the application of point loading on a single block, and the corresponding contact submatrix can be calculated and the simultaneous equations of the block system can be integrated. The central difference method is adopted to deduce the explicit expression of block displacement containing dynamic contact

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20

Hu, Xu Xiao, Ji Li, and Ming Min Yang. "Research on the Recursive and Step-by-Step Algorithm for Extraction of Point Laser Spot Center." Advanced Materials Research 1079-1080 (December 2014): 991–97. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.991.

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Whentesting the flatness of plate iron, if there is no disturbance in the spotdetection, the traditional centroid method and circle fitting method can bewell applied to extract the point laser spot center. However, the disturbanceof droplets, dusts, oil droplet and other factors are unavoidably in thepractical projects, and then the detection precision will falls sharply. In orderto solve the problem, the recursive and step-by-step method of extracting pointlaser spot center is proposed. There are two steps in this method.The thresholdcentroid method is used as the first step to extract the sp

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21

Lan, Guanqi, Sisi Chao, Yihong Wang, and Ying Cui. "Methods to Test the Compressive Strength of Earth Blocks." Advances in Materials Science and Engineering 2021 (August 26, 2021): 1–11. http://dx.doi.org/10.1155/2021/1767238.

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The efficient design of new earth structures and the restoration of old structures both require a reliable assessment of the compressive strength of earth materials. However, there is still much debate on the best method to accurately measure the compressive strength of earth blocks. To solve the problem of measuring the compressive strength of the earth block, the cube specimen, the half-block stacked specimen, and the full-size block specimen are used to measure the compressive strength of the molded adobe and rammed adobe, respectively, considering the influence of the specimen preparation

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22

Huang, Lan, Jia Zeng, Shiqi Sun, Wencong Wang, Yan Wang, and Kangping Wang. "Coarse-Grained Pruning of Neural Network Models Based on Blocky Sparse Structure." Entropy 23, no. 8 (2021): 1042. http://dx.doi.org/10.3390/e23081042.

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Deep neural networks may achieve excellent performance in many research fields. However, many deep neural network models are over-parameterized. The computation of weight matrices often consumes a lot of time, which requires plenty of computing resources. In order to solve these problems, a novel block-based division method and a special coarse-grained block pruning strategy are proposed in this paper to simplify and compress the fully connected structure, and the pruned weight matrices with a blocky structure are then stored in the format of Block Sparse Row (BSR) to accelerate the calculatio

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23

Vanlalruata, l. H. Jonathan, and Hijam Meronbala Devi. "Survey and Identification of Fungal Plant Diseases on Major Crops in Lunglei District of Mizoram." Environment and Ecology 42, no. 4A (2024): 1688–98. http://dx.doi.org/10.60151/envec/khro7188.

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A survey work on fungal diseases of major crops in Lunglei district, Mizoram was undertaken in farmers’ field during kharif season of 2021, using visual assessment method, in which pictorial representation of the host plant with known and graded amount of disease are compared with disease leaves to allow estimation of disease incidence, by measuring intensity of the pathogen with the help of disease grading scales. The disease samples collected from the farmers’ field were brought in the laboratory where identification of pathogen was done based on their morphological characters under the micr

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A., M. Al-Bugami, and S. Al-Juaid S. "Runge-Kutta and Block by Block Methods to Solve NonLinearVolterra Integral Equation Of The Second Kind." Journal of Progressive Research in Mathematics 11, no. 3 (2017): 1627–37. https://doi.org/10.5281/zenodo.3975981.

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In this paper, we discussed Runge-Kutta method (R.KM) and Block-by-Block method (B by BM) for used to solve (NVIE) of the second kind with continuous kernel. Numerical examples are presented and results are compared with the analytical solution to demonstrate the validity and applicability of this methods.

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Iwashita, Takeshi, Yuuichi Nakanishi, and Masaaki Shimasaki. "Parallelization of ICCG Method Using Three Dimensional Block Red-Black Ordering Method." IEEJ Transactions on Electronics, Information and Systems 124, no. 2 (2004): 526–32. http://dx.doi.org/10.1541/ieejeiss.124.526.

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26

Zou, Rui. "Adjustment method and understanding of water-cut recovery period in polymer injection block." E3S Web of Conferences 352 (2022): 01047. http://dx.doi.org/10.1051/e3sconf/202235201047.

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Taking an injection station in polymer injection block (BLOCK A) as an example, this paper proposed a series of measures such as stratification polymer injection and regional overall profile control to improve the development effect and further enhance the final recovery factor of the block in view of the problems of low injection pressure in individual areas, profile in thrust and high comprehensive water cut of produced Wells in the block. It provides some basis and reference for production and development of other polymer injection blocks.

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27

Liu, C. H., M. B. Jaksa, and A. G. Meyers. "A transfer coefficient method for rock slope toppling." Canadian Geotechnical Journal 46, no. 1 (2009): 1–9. http://dx.doi.org/10.1139/t08-094.

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A common block toppling mode is adopted for analysing toppling stability of rock slopes. A transfer coefficient method is developed based on Goodman and Bray’s kinematic model, by introducing two parameters: the transfer coefficient and equivalent toppling weight, which, given the geometrical and geotechnical parameters of the slope, can be determined as functions of the relative position of the block to the slope crest. Accounting for the case that the block base is not normal to the dominant discontinuities, the arithmetic is extended. The method describes a concise relationship between the

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Yu, Chau Cho, Jun Wei Chang, and Su Wei Hao. "A Numerical Method for the Paving Block Evaluation." Applied Mechanics and Materials 395-396 (September 2013): 524–28. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.524.

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A process to evaluate the paving block design is proposed. A numerical tire model is developed appropriately for the analysis. The contact pressure between the tire and paving block is calculated. Its distribution pattern is compared with the result of the field tests and is found to be in a good agreement. The present study shows that the magnitude and the distribution pattern are sensitive to the roughness of the road surface. The contact pressure induced by the dynamic impact due to a bumpy surface could be several times higher than that contributed from a smooth run-over. The hot spots in

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Ghosh, D. K., and N. R. Desai. "Alternate Method for the Robustness of the Block Design of Block Sizes two against the Loss of Whole Blocks." INTERNATIONAL JOURNAL OF AGRICULTURAL AND STATISTICAL SCIENCES 20, no. 01 (2024): 53. http://dx.doi.org/10.59467/ijass.2024.20.53.

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The usual procedure for indentifying the block design to be connected is rank of C matrix (information matrix) should be (v ? 1), if this violates then design becomes disconnected. Several authors obtained robustness criteria against the loss of one block or more than one blocks based on connected property. Because connectedness is one of the important criteria to find the robustness of the residual design. Tsai and Liao (2013) discussed the minimum break down criteria and connectedness criteria of block design to obtain the robust design against the lost of whole block. In this investigation,

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McCarthy, J. F. "Block-conjugate-gradient method." Physical Review D 40, no. 6 (1989): 2149–52. http://dx.doi.org/10.1103/physrevd.40.2149.

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Yoon, Yong-Uk, and Jae-Gon Kim. "Activity-Based Block Partitioning Decision Method for Versatile Video Coding." Electronics 11, no. 7 (2022): 1061. http://dx.doi.org/10.3390/electronics11071061.

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Versatile Video Coding (VVC), the latest international video coding standard, has more than twice the compression performance of High-Efficiency Video Coding (HEVC) through adopting various coding techniques. The multi-type tree (MTT) block structure offers more advanced flexible block partitioning by allowing the binary tree (BT) and ternary tree (TT) structures, as well as the quadtree (QT) structure. Because VVC selects the optimal block partition by performing encoding on all possible CU partitions, the encoding complexity increases enormously. In this paper, we observe the relationship be

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Zheng, Yinhe, Lu Xia, and Qingchun Yu. "Analysis of removability and stability of rock blocks by considering the rock bridge effect." Canadian Geotechnical Journal 53, no. 3 (2016): 384–95. http://dx.doi.org/10.1139/cgj-2014-0503.

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In traditional block theory, the removability and stability of rock blocks are analyzed independently; that is, the stability of a removable block is analyzed in detail, and nonremovable blocks are regarded as stable. However, in practical situations, nonremovable blocks may pose more danger than removable blocks. This paper presents a unified method for analyzing the removability and stability of rock blocks. In this method, the cracking of rock bridges is considered and nonremovable blocks are not assumed to be stable. First, possible cracking rock bridges are identified by extending finite-

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Carey, Anne, Ajay Nair, and Adam Thoms. "Evaluating the Soil Block Method and Growing Media in Organic Vegetable Transplant Production." HortScience 59, no. 4 (2024): 542–51. http://dx.doi.org/10.21273/hortsci17566-23.

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Organic vegetable growers are interested in using the “soil block” method for transplant production as an alternative to plastic flats. The soil block method compresses growing media into a freestanding block in contrast to the cells of a plastic flat. Anecdotal evidence of soil block–grown transplants with increased vigor and root development exists, but limited research has been conducted to evaluate these claims. Furthermore, identifying commercial growing medium for certified organic transplant production is needed. The objective of this study was to compare growth parameters and root deve

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No, Yoomin, and Kyoung Sun Kim. "A Comparative Study on the Block Patterns Based on the Standard Body Type of Korean Females in Their Twenties." Research Institute of Human Ecology 27, no. 3 (2023): 67–84. http://dx.doi.org/10.36357/johe.2023.27.3.67.

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Background/Objectives: The relationship between somatotype and patterns in garment fitting is important when it comes to clothing fitness. In this study, we analyze the relationship and garment sample fitness between standard somatotypes of Korean females in their twenties and seven block patterns mainly used in fashion-related educational institutions. Also, we propose a block pattern correction method for Korean females in their twenties. Three types of bodice blocks, such as new bunka, Armstrong, and Natalie bray, were used in this study, along with four types of torsos blocks, such as L&am

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Kasichhwa, Anita, Shreya Shrivastav, and Ayushi Agrawal. "A comparison of two techniques of cell block preparation." Journal of Pathology of Nepal 9, no. 1 (2019): 1469–74. http://dx.doi.org/10.3126/jpn.v9i1.23370.

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Background: Cell block technique is a method of preparing cytological material so that it can be processed, sectioned, stained, and viewed as a histology section. The study compared two methods of cell block preparation, plasma-thromboplastin method and collodion bag technique of cell block preparation. Materials and Methods: Samples were randomly processed by plasma-thromboplastin technique or by collodion bag technique. Hematoxylin/Eosin stained cell block sections were examined and scored scaling from 1 to 3 for cellularity, clarity, nuclear features, cytoplasm, use of ancillary test

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Cao, Thi Luyen, Dinh Phong Pham, and Hoang Hiep Pham. "A Novel Revesible Data Hiding based on Improved Pixel Value Ordering Method." Research and Development on Information and Communication Technology 2022, no. 2 (2022): 82–100. http://dx.doi.org/10.32913/mic-ict-research.v2022.n2.1064.

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Reversible data hiding based on the preservationof sorted pixel value ordering (PVO) technique has beenresearched and expanded recently due to its high embeddingcapacity and good image quality. secret data is always embedded in the largest or smallest pixel of the sub-block. Thus,each sub-block will embed two bits. The more blocks an imagehas, the higher the embedding potential. In this paper, to havemore sub-blocks, the paper divides the image into sub-blockswith 3 pixels and embeds 2 bits in the maximum value and1 bit in the minimum value. Therefore, each sub-block of theproposed embedding s

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Elci, Hakan, and Necdet Turk. "Block Volume Estimation from the Discontinuity Spacing Measurements of Mesozoic Limestone Quarries, Karaburun Peninsula, Turkey." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/363572.

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Block volumes are generally estimated by analyzing the discontinuity spacing measurements obtained either from the scan lines placed over the rock exposures or the borehole cores. Discontinuity spacing measurements made at the Mesozoic limestone quarries in Karaburun Peninsula were used to estimate the average block volumes that could be produced from them using the suggested methods in the literature. The Block Quality Designation (BQD) ratio method proposed by the authors has been found to have given in the same order of the rock block volume to the volumetric joint count (Jv) method. Moreov

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Wu, Han-Yan, Ling-Hwei Chen, and Yu-Tai Ching. "Block-Based Steganography Method Using Optimal Selection to Reach High Efficiency and Capacity for Palette Images." Applied Sciences 10, no. 21 (2020): 7820. http://dx.doi.org/10.3390/app10217820.

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The primary goal of steganographic methods is to develop statically undetectable methods with high steganographic capacity. The embedding efficiency is one kind of measure for undetectability. Block-based steganography methods have been proposed for achieving higher embedding efficiency under limited embedding capacity. However, in these methods, some blocks with larger embedding distortions are skipped, and a location map is usually incorporated into these methods to record the embedding status of each block. This reduces the embedding capacity for secret messages. In this study, we proposed

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Pan, Shuo, and Xinjie Shao. "An Optimal Method for Extracting the Center of Light Stripes." Journal of Physics: Conference Series 2132, no. 1 (2021): 012005. http://dx.doi.org/10.1088/1742-6596/2132/1/012005.

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Abstract A method for extracting the center of the light stripe to effectively reduce the environmental noise is proposed in this paper. The block matching algorithm is adapted to use the global information in the structured light image to group image blocks with similar light stripe structures. The center coordinates of the light stripe in each group of image blocks are extracted by the gray gravity method, and its average value is used as the final center of light stripes in the similar image block, which reduces the influence of random noise on the accuracy of the extraction algorithm.

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Zeng, Jiani, Wenbo Wu, Zhengdong Huang, and Kuan Fan. "A block-queue based optimization method for composite structures blended with multiple templates." MATEC Web of Conferences 249 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201824901003.

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Maintaining the continuity (blending) of stacking sequences is very vital when the stacking sequences of a multi-region panel is being optimized. The traditional attempt simplifies the difficulty of the blending problem by designing the whole panel based on one stacking template. However, this simplification adds an unnecessary constraint that regions with the same thickness should have the same stacking sequence. In order to overcome the drawback, this paper introduces a region block queue based method to obtain the optimal manufacturable stacking sequences of composite laminates blended from

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Moral, Çiğdem Kıvılcımdan, Özdemir Doğan, and Faika Dilek Sanin. "Comparison of chemical fractionation method and 1H-NMR spectroscopy in measuring the monomer block distribution of algal alginates." Journal of Polymer Engineering 33, no. 3 (2013): 239–46. http://dx.doi.org/10.1515/polyeng-2012-0066.

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Abstract Alginates are composed of β-D-mannuronic acid (M) and α-L-guluronic acid (G). In this study, block distributions of alginate samples were measured by a chemical fractionation method and 1H-NMR spectroscopy, to compare the usefulness of the two methods. Block distribution results obtained from the two methods were found to be statistically different from each other; the chemical fractionation method gave consistently lower estimates for the amount of homopolymeric blocks. The repeatability of the results was also lower in the chemical fractionation method. By contrast, 1H-NMR spectrosc

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Lumingkewas, Riana H., Sigit P. Hadiwardoyo, and Finno A. Hadiwardoyo. "Laboratory Innovation to Investigate Concrete Paving Blocks Compressive Strength." Civil Engineering Journal 9, no. 11 (2023): 2672–88. http://dx.doi.org/10.28991/cej-2023-09-11-03.

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This research aims to evaluate the block method against the cube test method using variations in thickness. Paving blocks can be produced using a hydraulic machine or a simple press, and their performance can be measured based on density and compressive strength tests. The block test method shows that with the same material composition forming the paving block, a paving block with a higher thickness can lead to a lower compressive strength value. In contrast, the cube test method shows different results. The paving blocks used in this study had width and length sizes of 100 and 200 mm, respect

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Горбунов, В. А., and Д. Е. Стародубцев. "Method of the regenerative block coding." Cherepovets State University Bulletin, no. 5(116) (October 13, 2023): 67–74. http://dx.doi.org/10.23859/1994-0637-2023-5-116-5.

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В статье предлагается метод регенерационного интерпретационного блочного кодирования информации, позволяющий осуществлять не только восстановление потерь блоков данных при передаче информации по зашумленному акустическому каналу связи, но и передачу вместе с исходным сообщением метаданных без внесения избыточности в его состав и структуру. В настоящее время задача оперативной регенерации блоков потерянных данных при передаче по каналам связи с шумом представляет особую значимость практически во всех современных инфокоммуникационных системах, поэтому актуальность темы представленного в статье

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Arnold, Daiana Cristina Metz, Valéria Costa de Oliveira, Claudio de Souza Kazmierczak, et al. "A Critical Analysis of Red Ceramic Blocks Roughness Estimation by 2D and 3D Methods." Remote Sensing 13, no. 4 (2021): 789. http://dx.doi.org/10.3390/rs13040789.

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The method of measuring the roughness of ceramic substrates is not consensual, with unsuccessful attempts to associate roughness with the adhesion of coatings because the ceramic blocks have different areas of contact, shapes, and dimensions of the roughness as well as the extrusion process influences the mechanical anisotropy of the block. The goal of this work is a quantification and comparison of roughness data obtained by 2D and 3D methods, evaluating the variations of results between the measurement methods and formulating a critical analysis regarding the quality of the information obtai

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Chesnokov, Andrey, and Marc Van Barel. "A direct method to solve block banded block Toeplitz systems with non-banded Toeplitz blocks." Journal of Computational and Applied Mathematics 234, no. 5 (2010): 1485–91. http://dx.doi.org/10.1016/j.cam.2010.02.029.

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Zhu, Wen Hua. "Boundary Stitching Method for Block-Based Parallel Error Diffusion." Applied Mechanics and Materials 738-739 (March 2015): 560–63. http://dx.doi.org/10.4028/www.scientific.net/amm.738-739.560.

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In this paper, we describe a boundary stitching method for block-based parallel error diffusion algorithm. A blocked strategy is used to separate the original image into independent blocks. Overlapping areas across adjacent blocks and initial error of boundary pixels are introduce to eliminate the boundary artifacts. Experimental results show that the proposed method generates high quality images similar to that of the original algorithm.

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Baiyin, Yang, Xie Haiqiong, and Gan Daoqi. "Biomechanical Study of Porous Osteotomy Block in Evans Osteotomy for Flat Foot Correction Based on Finite Element Method." BIO Web of Conferences 59 (2023): 01013. http://dx.doi.org/10.1051/bioconf/20235901013.

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ased on the finite element method, the effect of porous osteotomy block on the biomechanics of surrounding joints in the treatment of flat foot by Evans osteotomy is studied. The finite element method is used to simulate the osteotomy block for Evans osteotomy to correct flatfoot. The effect of Evans osteotomy on the foot force line is analyzed from the biomechanical point of view. The osteotomy blocks were divided into solid osteotomy blocks and porous osteotomy blocks, and normal foot and flat foot were used as control groups. The results show that Evans osteotomy can effectively improve the

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Chen, Huan. "Optimization of the combination method for tertiary oil recovery layers in Block N." E3S Web of Conferences 416 (2023): 01020. http://dx.doi.org/10.1051/e3sconf/202341601020.

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This article analyzes the development status of oil layers in Zone N, and based on the principles of layer combination in other injected blocks in Zone X, compares the development status of oil layers in Block M, and formulates two sets of layer combination plans for tertiary oil recovery in Block N. By comparing and optimizing the two sets of layer combination plans, the final decision is made to conform to the combination plan for tertiary oil recovery in Block N.

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Kovanič, Ľudovít, and Peter Blišťan. "Quarry Wall Stability Assessment Using TLS Method." Advanced Materials Research 1044-1045 (October 2014): 603–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.603.

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The aim of this paper is to test the possibility of terrestrial laser scanning use to analyze the stability of quarry walls. In recent years the laser scanners started being tested and used for the documentation of geological structures and various phenomena such as landslides, rock collapses and observation of their morphological changes. The subject of our research was a quarry wall in the open-pit mine Brestov, with a significant bench or block disintegration of the andesite massif and therefore, there is a risk of rock blocks crashing. Selected quarry wall was repeatedly measured in the au

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Fang Ren, Fang Ren, Yi-Ping Yang Fang Ren, and Zhe-Lin Zhang Yi-Ping Yang. "Dynamic Hybrid Reversible Data Hiding Based on Pixel-value-ordering." 電腦學刊 34, no. 6 (2023): 015–29. http://dx.doi.org/10.53106/199115992023123406002.

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<p>Reversible data hiding (RDH) using pixel-value-ordering (PVO) is a well-established technique for embedding data in a cover image by modifying the maximum and minimum in each block. This paper proposes a dynamic hybrid RDH method based on PVO. Specifically, a 3&times;3 block according to its complexity and two thresholds T1 and T2 is classified as three levels: extremely smooth, smooth, and rough. Different processing algorithms are used for different levels. For rough blocks, they are ignored to avoid reducing the peak signal-to-noise ratio. For smooth blocks, the proposed method

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