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1

Djuve, Vilde Lunnan, Carl Henrik Knutsen, and Tore Wig. "Patterns of Regime Breakdown Since the French Revolution." Comparative Political Studies 53, no. 6 (2019): 923–58. http://dx.doi.org/10.1177/0010414019879953.

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We present a temporally fine-grained data set on regimes, defined as the formal and informal rules essential for selecting leaders. The data set comprises more than 2,000 regimes from 197 polities, 1789 to 2016. We highlight how the frequency of breakdowns and particular modes of breakdown have followed cyclical rather than monotonic patterns across modern history. The most common breakdown modes, overall, are coups and incumbent-guided regime transformations. Furthermore, we report robust evidence that low income, slow or negative growth, and intermediate levels of democracy predict a higher
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2

Sato, Soshi, Kikuo Yamabe, Tetsuo Endoh, and Masaaki Niwa. "Failure Analysis of a SiC MOS Capacitor with a Poly-Si Gate Electrode." Materials Science Forum 858 (May 2016): 485–88. http://dx.doi.org/10.4028/www.scientific.net/msf.858.485.

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The failure mechanism of a SiC metal-oxide-semiconductor capacitor with a poly-Si gate electrode was investigated by time-dependent dielectric breakdown testing under a 200-nA constant current stress. The capacitor exhibited both hard and soft breakdowns. After dielectric breakdown in both cases, adjacent concaves were observed on the capacitor with a field-emission scanning electron microscope. Additional optical beam-induced resistance changes and photo-emission analysis of a capacitor after hard-breakdown located a failure point on the periphery of a group of adjacent concaves. Cross-sectio
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3

Müller, Christine H. "Optimal breakdown point maximizing designs." Metrika 42, no. 1 (1995): 244–45. http://dx.doi.org/10.1007/bf01894312.

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4

Ruckdeschel, Peter, and Nataliya Horbenko. "Yet another breakdown point notion: EFSBP." Metrika 75, no. 8 (2011): 1025–47. http://dx.doi.org/10.1007/s00184-011-0366-4.

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5

Ohyanagi, Takasumi, Chen Bin, Takashi Sekiguchi, Hirotaka Yamaguchi, and Hirofumi Matsuhata. "EBIC Analysis of Breakdown Failure Point in 4H-SiC PiN Diodes." Materials Science Forum 615-617 (March 2009): 707–10. http://dx.doi.org/10.4028/www.scientific.net/msf.615-617.707.

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The breakdown failure points in the 4H-SiC PiN diodes were analyzed by the electron beam induced current (EBIC). We focused on the failure, which showed the avalanche breakdown, and we determined the failure points by an emission microscopy. We observed the basal plane dislocation around the failure point and at measured temperatures below 200K we found the dark spots in the EBIC. However, in the X-ray topography image, no spots were found around the dislocations. We therefore think that these spots originated from the metal contamination. The electric field was multiplied due to a permittivit
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6

Bondarenko, S. I., A. V. Krevsun, and V. P. Koverya. "Features of nanocontact formed using point electrical breakdown of a niobium oxide nanolayer." Low Temperature Physics 50, no. 4 (2024): 350–58. http://dx.doi.org/10.1063/10.0025302.

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The electrical characteristics of a point section of niobium oxide between a massive cathode made of a superconducting indium-tin alloy and a niobium film before the oxide breakdown and the nanocontact that appears after the breakdown of the oxide at room temperature have been studied. The dependencies of the point breakdown voltage of the oxide and the resistance of nanocontacts on the method of breakdown and the thickness of the oxide in the range of 15–60 nm have been established. In particular, a minimum value of the breakdown current has been established (about 1 μA), below which breakdow
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7

Camponovo, Lorenzo, and Taisuke Otsu. "Breakdown point theory for implied probability bootstrap." Econometrics Journal 15, no. 1 (2012): 32–55. http://dx.doi.org/10.1111/j.1368-423x.2011.00365.x.

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8

Vandev, D. L., and N. M. Neykov*. "About Regression Estimators with High Breakdown Point." Statistics 32, no. 2 (1998): 111–29. http://dx.doi.org/10.1080/02331889808802657.

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9

Van Ness, John W., and Jim J. Yang. "Robust discriminant analysis: Training data breakdown point." Journal of Statistical Planning and Inference 67, no. 1 (1998): 67–83. http://dx.doi.org/10.1016/s0378-3758(97)00106-7.

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10

Schmitt, Eric, Viktoria Öllerer, and Kaveh Vakili. "The finite sample breakdown point of PCS." Statistics & Probability Letters 94 (November 2014): 214–20. http://dx.doi.org/10.1016/j.spl.2014.07.026.

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11

Chen, Zhiqiang. "Breakdown point of Schuster–Narvarte's location estimator." Statistics & Probability Letters 48, no. 3 (2000): 283–86. http://dx.doi.org/10.1016/s0167-7152(00)00008-0.

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12

Kanamori, Takafumi, Shuhei Fujiwara, and Akiko Takeda. "Breakdown Point of Robust Support Vector Machines." Entropy 19, no. 2 (2017): 83. http://dx.doi.org/10.3390/e19020083.

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13

Seela-Or, Surapong, Kittipong Tonmitra, and Arkom Kaewrawang. "Solid Dielectric Barrier in Oil Insulator under Uniform and Non-Uniform Electric Fields." Advanced Materials Research 740 (August 2013): 540–44. http://dx.doi.org/10.4028/www.scientific.net/amr.740.540.

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This paper presents the dielectric barrier (PVC, PMMA, and glass) breakdown voltage test in transformer oil in uniform field, slight non-uniform field and highly non-uniform field generated by plate-plate, plate-point, and point-point electrodes, respectively. It was found that PVC can withstand the maximum breakdown voltage that is higher than PMMA and glass. The dielectric barrier with 1 mm thick placed next to the high voltage electrode and ground electrode can withstand the higher breakdown voltage than dielectric barrier with 2 mm thick placed next to the ground electrode and at the middl
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14

Masten, Matthew A., and Alexandre Poirier. "Inference on breakdown frontiers." Quantitative Economics 11, no. 1 (2020): 41–111. http://dx.doi.org/10.3982/qe1288.

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Given a set of baseline assumptions, a breakdown frontier is the boundary between the set of assumptions which lead to a specific conclusion and those which do not. In a potential outcomes model with a binary treatment, we consider two conclusions: First, that ATE is at least a specific value (e.g., nonnegative) and second that the proportion of units who benefit from treatment is at least a specific value (e.g., at least 50%). For these conclusions, we derive the breakdown frontier for two kinds of assumptions: one which indexes relaxations of the baseline random assignment of treatment assum
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15

Mikhailov, P. S., and I. L. Muzyukin. "Field electron emission from a nanostructured tungsten surface." Journal of Physics: Conference Series 2064, no. 1 (2021): 012059. http://dx.doi.org/10.1088/1742-6596/2064/1/012059.

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Abstract In this paper, the electron emission from a nanostructured tungsten surface was investigated. A method for measuring an extremely low current (10−12 – 10−14 A) has been tested. It made possible to reduce the effect of the electric field on the sample surface and to minimize the probability of spontaneous breakdowns. For a detailed study of tungsten fuzz, a point tungsten anode (diameter 90 μm) was used. Field enhancement factor (β = 2000 – 3000) and effective emission area were calculated using the Fowler–Nordheim plots. The pre-breakdown current rise was studied. The emission current
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16

Western, Ned J., Ivan Perez-Wurfl, Stuart R. Wenham, and Stephen P. Bremner. "Point-Contacting by Localized Dielectric Breakdown With Breakdown Fields Described by the Weibull Distribution." IEEE Transactions on Electron Devices 62, no. 6 (2015): 1826–30. http://dx.doi.org/10.1109/ted.2015.2423292.

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17

Cho, Jung Jin, Yong Chen, and Yu Ding. "Calculating the Breakdown Point of Sparse Linear Models." Technometrics 51, no. 1 (2009): 34–46. http://dx.doi.org/10.1198/tech.2009.0004.

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18

Sapra, Sunil K. "High-breakdown point estimation of some regression models." Applied Economics Letters 10, no. 14 (2003): 875–78. http://dx.doi.org/10.1080/1350485032000162820.

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19

Zinde-Walsh, Victoria. "ASYMPTOTIC THEORY FOR SOME HIGH BREAKDOWN POINT ESTIMATORS." Econometric Theory 18, no. 5 (2002): 1172–96. http://dx.doi.org/10.1017/s0266466602185070.

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High breakdown point estimators in regression are robust against gross contamination in the regressors and also in the errors; the least median of squares (LMS) estimator has the additional property of packing the majority of the sample most tightly around the estimated regression hyperplane in terms of absolute deviations of the residuals and thus is helpful in identifying outliers. Asymptotics for a class of high breakdown point smoothed LMS estimators are derived here under a variety of conditions that allow for time series applications; joint limit processes for several smoothed estimators
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20

Rusak, Zvi. "Axisymmetric swirling flow around a vortex breakdown point." Journal of Fluid Mechanics 323 (September 25, 1996): 79–105. http://dx.doi.org/10.1017/s0022112096000857.

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The structure of an axisymmetric and inviscid swirling flow around a vortex breakdown point is analysed. The model assumes that a free axisymmetric bubble surface is developed in the flow with a stagnation point at its nose. The classical Squire-Long equation for the stream function ψ(x,y) (where y = r2/2) is transformed into a free boundary problem for the solution of y(x, ψ). The development of the flow is studied in three regions: the approaching flow ahead of the bubble, around the bubble nose and around the separated bubble surface. Asymptotic expansions are constructed to describe the fl
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21

Liu, XiaoHui, YiJun Zuo, and QiHua Wang. "Finite sample breakdown point of Tukey’s halfspace median." Science China Mathematics 60, no. 5 (2017): 861–74. http://dx.doi.org/10.1007/s11425-016-0285-1.

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22

Hekimoğlu, Serif, and R. Cuneyt Erenoglu. "A new GM-estimate with high breakdown point." Acta Geodaetica et Geophysica 48, no. 4 (2013): 419–37. http://dx.doi.org/10.1007/s40328-013-0029-1.

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23

Salibian-Barrera, Matías, and Víctor J. Yohai. "High breakdown point robust regression with censored data." Annals of Statistics 36, no. 1 (2008): 118–46. http://dx.doi.org/10.1214/009053607000000794.

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24

Statti, Florencia, Mariela Sued, and Victor J. Yohai. "High breakdown point robust estimators with missing data." Communications in Statistics - Theory and Methods 47, no. 21 (2017): 5145–62. http://dx.doi.org/10.1080/03610926.2017.1388396.

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25

T., Alanamu, Oyeyemi G.M., Olaniran R.O., and Adetunji K.O. "Review of Some Robust Estimators in Multiple Linear Regressions in the Presence of Outlier(s)." African Journal of Mathematics and Statistics Studies 6, no. 3 (2023): 59–69. http://dx.doi.org/10.52589/ajmss-ec8ewxul.

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Linear regression has been one of the most important statistical data analysis tools. Multiple regression is a type of regression where the dependent variable shows a linear relationship with two or more independent variables. OLS estimate is extremely sensitive to unusual observations (outliers), with low breakdown point and low efficiency. This paper reviews and compares some of the existing robust methods (Least Absolute Deviation, Huber M-Estimator, Bisquare M-Estimator, MM Estimator, Least Median Square, Least Trimmed Square, S-Estimator); a simulation method is used to compare the selected
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26

Svolik, Milan W. "Which Democracies Will Last? Coups, Incumbent Takeovers, and the Dynamic of Democratic Consolidation." British Journal of Political Science 45, no. 4 (2014): 715–38. http://dx.doi.org/10.1017/s0007123413000550.

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This article develops a change-point model of democratic consolidation that conceives of consolidation as a latent quality to be inferred rather than measured directly. Consolidation is hypothesized to occur when a large, durable, and statistically significant decline in the risk of democratic breakdowns occurs at a well-defined point during a democracy's lifetime. This approach is applied to new data on democratic survival that distinguish between breakdowns due to military coups and incumbent takeovers. We find that the risk of an authoritarian reversal by either process differs both in its
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27

Jones, Nick. "Far from Houdini: The ‘Magic’ of the VFX Breakdown." Animation 18, no. 1 (2023): 42–58. http://dx.doi.org/10.1177/17468477231155541.

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VFX (visual effects) breakdowns are short ancillary videos that advertise the digital animation work undertaken by a VFX company for a particular film or television programme. Claiming to take viewers ‘behind the magic’ of VFX, breakdowns disassemble a wide variety of shots and sequences, and point to the extensive use of computer-generated imagery in contemporary blockbuster cinema. But, as much as breakdowns reveal some illusions, they conjure others. Breakdowns operate in a register of speed, fluidity and efficacy, showing neither the many people nor the extensive periods of time that it ta
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28

Lin, R. H., H. Chen, L. Xiang, and N. C. Qu. "Experiment of cavitating flow characteristics of inducer with inflow entrained air." Journal of Physics: Conference Series 2707, no. 1 (2024): 012032. http://dx.doi.org/10.1088/1742-6596/2707/1/012032.

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Abstract To study the effect of inflow entrained non-condensable LOX tank pressurization gas on cavitating flow inside inducer pumps, a series of experiment were performed. The cavitation head breakdown point and cavitation instability characteristics of an inducer pump under different inlet gas volume fraction(IGVF) were investigated. It was found that head breakdown occurred at higher cavitation number under higher IGVF condition. Analysis of low frequency pulsating pressure suggested that cavitation surge was supressed by extra compressibility provided by non-condensable gas at operating po
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29

Bekibenan, Sekongo, Yeo Zie, and Grafoute Moussa. "PREDICTION TOOL FOR OIL DIELECTRIC PERFORMANCE USING AN ELECTRICAL CIRCUIT APPROACH FOR FRESH SYNTHETIC, NATURAL ESTER, AND MINERAL OILS UNDER AC STRESS." International Journal of Advanced Research 12, no. 12 (2024): 649–56. https://doi.org/10.21474/ijar01/20063.

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Breakdown voltage and streamer velocity are crucial parameters in evaluating liquid dielectrics used in power transformers. The breakdown phenomenon is a complex physical process that requires a multidisciplinary approach. This paper presents a step-by-step modelling procedure for a single-arc discharge. A point-plane electrode configuration is employed, utilizing three distinct dielectric liquids. An AC voltage is applied, increasing at a rate of 1 kV/s until the breakdown voltage is reached, replicating the experimental setup. The input data include geometric parameters, such as the distance
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30

Bekibenan, Sekongo, Yeo Zie, and Grafoute Moussa. "PREDICTION TOOL FOR OIL DIELECTRIC PERFORMANCE USING AN ELECTRICAL CIRCUIT APPROACH FOR FRESH SYNTHETIC, NATURAL ESTER, AND MINERAL OILS UNDER AC STRESS." International Journal of Advanced Research 12, no. 12 (2024): 649–56. https://doi.org/10.21474/ijar01/20075.

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Breakdown voltage and streamer velocity are crucial parameters in evaluating liquid dielectrics used in power transformers. The breakdown phenomenon is a complex physical process that requires a multidisciplinary approach. This paper presents a step-by-step modelling procedure for a single-arc discharge. A point-plane electrode configuration is employed, utilizing three distinct dielectric liquids. An AC voltage is applied, increasing at a rate of 1 kV/s until the breakdown voltage is reached, replicating the experimental setup. The input data include geometric parameters, such as the distance
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31

Zhang, Xian Jun, and Na You. "Dependence of the Breakdown Voltage of 4H-SiC MESFET’s on the Field Plate and Step-Channel." Applied Mechanics and Materials 668-669 (October 2014): 803–7. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.803.

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The breakdown mechanism of the 4H-SiC metal-semiconductor field effect transistor (4H-SiC MESFET) at a large drain bias is explored and the dependence of breakdown voltage on the field-plate and the step-channel is investigated by simulation. The results revealed that the breakdown occurs at the corner of the gate near to the drain. The channel step and the field-plate length have sensitive effect on the breakdown voltage. The breakdown characteristics are improved since the electric field peak is lowered at breakdown point in the step-channel and field-plate structures. The largest breakdown
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32

Park, Chanseok, and Ayanendranath Basu. "MINIMUM DISPARITY ESTIMATION : ASYMPTOTIC NORMALITY AND BREAKDOWN POINT RESULTS." Bulletin of informatics and cybernetics 36 (December 2004): 19–33. http://dx.doi.org/10.5109/12576.

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33

Excell, P. S. "Microwave breakdown in a point-to-plane electrode gap." IEE Proceedings A Science, Measurement and Technology 139, no. 3 (1992): 89. http://dx.doi.org/10.1049/ip-a-3.1992.0017.

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34

Zhao, Junlong, Guan Yu, and Yufeng Liu. "Assessing robustness of classification using an angular breakdown point." Annals of Statistics 46, no. 6B (2018): 3362–89. http://dx.doi.org/10.1214/17-aos1661.

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35

Rodriguez, Daniela, and Marina Valdora. "The breakdown point of the median of means tournament." Statistics & Probability Letters 153 (October 2019): 108–12. http://dx.doi.org/10.1016/j.spl.2019.05.012.

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36

Müller, Christine H. "Comparison of high-breakdown-point estimators for image denoising." Allgemeines Statistisches Archiv 86, no. 3 (2002): 307–21. http://dx.doi.org/10.1007/s101820200106.

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37

Giloni, Avi, and Manfred Padberg. "The Finite Sample Breakdown Point of \boldmath$\ell_1$-Regression." SIAM Journal on Optimization 14, no. 4 (2004): 1028–42. http://dx.doi.org/10.1137/s1052623403424156.

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38

Becker, Claudia, and Ursula Gather. "The Masking Breakdown Point of Multivariate Outlier Identification Rules." Journal of the American Statistical Association 94, no. 447 (1999): 947–55. http://dx.doi.org/10.1080/01621459.1999.10474199.

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39

Chen, Z. Q. "Bounds for the Breakdown Point of the Simplicial Median." Journal of Multivariate Analysis 55, no. 1 (1995): 1–13. http://dx.doi.org/10.1006/jmva.1995.1063.

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40

S., M. Shaharudin, Ahmad N., H. Zainuddin N., and S. Mohamed N. "Identification of Rainfall Patterns on Hydrological Simulation Using Robust Principal Component Analysis." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 3 (2018): 1162–67. https://doi.org/10.11591/ijeecs.v11.i3.pp1162-1167.

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A robust dimension reduction method in Principal Component Analysis (PCA) was used to rectify the issue of unbalanced clusters in rainfall patterns due to the skewed nature of rainfall data. A robust measure in PCA using Tukey’s biweight correlation to downweigh observations was introduced and the optimum breakdown point to extract the number of components in PCA using this approach is proposed. A set of simulated data matrix that mimicked the real data set was used to determine an appropriate breakdown point for robust PCA and compare the performance of the both approaches. The simulate
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41

Chen, Yu-Chun, Ruei-Hong Yan, Hsu-Chia Huang, Liang-Hsuan Nieh, and Hao-Hsiung Lin. "Guard Ring Design to Prevent Edge Breakdown in Double-Diffused Planar InGaAs/InP Avalanche Photodiodes." Materials 16, no. 4 (2023): 1667. http://dx.doi.org/10.3390/ma16041667.

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We report on the design of an attached guard ring (AGR) and a floating guard ring (FGR) in a planar separate absorption, grading, charge, and multiplication In0.53Ga0.47As/InP avalanche photodiode to prevent premature edge breakdowns. The depths of the two Zn diffusions were utilized to manipulate the guard ring structures. Results from TCAD simulation indicate that the optimal AGR diffusion depth is right at the turning point where the breakdown current shifts from the edge of active region to the AGR region. The devices with optimal AGR depth contain significantly higher breakdown voltages t
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42

Riani, Marco, Anthony C. Atkinson, Aldo Corbellini, and Domenico Perrotta. "Robust Regression with Density Power Divergence: Theory, Comparisons, and Data Analysis." Entropy 22, no. 4 (2020): 399. http://dx.doi.org/10.3390/e22040399.

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Minimum density power divergence estimation provides a general framework for robust statistics, depending on a parameter α , which determines the robustness properties of the method. The usual estimation method is numerical minimization of the power divergence. The paper considers the special case of linear regression. We developed an alternative estimation procedure using the methods of S-estimation. The rho function so obtained is proportional to one minus a suitably scaled normal density raised to the power α . We used the theory of S-estimation to determine the asymptotic efficiency and br
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43

Saleh, Shokrya. "Robust AIC with High Breakdown Scale Estimate." Journal of Applied Mathematics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/286414.

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Akaike Information Criterion (AIC) based on least squares (LS) regression minimizes the sum of the squared residuals; LS is sensitive to outlier observations. Alternative criterion, which is less sensitive to outlying observation, has been proposed; examples are robust AIC (RAIC), robust Mallows Cp (RCp), and robust Bayesian information criterion (RBIC). In this paper, we propose a robust AIC by replacing the scale estimate with a high breakdown point estimate of scale. The robustness of the proposed methods is studied through its influence function. We show that, the proposed robust AIC is ef
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44

Habib, K. A., M. S. Damra, J. J. Saura, I. Cervera, and J. Bellés. "Breakdown and Evolution of the Protective Oxide Scales of AISI 304 and AISI 316 Stainless Steels under High-Temperature Oxidation." International Journal of Corrosion 2011 (2011): 1–10. http://dx.doi.org/10.1155/2011/824676.

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The failure of the protective oxide scales of AISI 304 and AISI 316 stainless steels has been studied and compared at 1,000°C in synthetic air. First, the isothermal thermogravimetric curves of both stainless steels were plotted to determine the time needed to reach the breakdown point. The different resistance of each stainless steel was interpreted on the basis of the nature of the crystalline phases formed, the morphology, and the surface structure as well as the cross-section structure of the oxidation products. The weight gain of AISI 304 stainless steel was about 8 times greater than tha
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45

Yang, Xin, Baoxing Duan, and Yintang Yang. "GaN/Si Heterojunction VDMOS with High Breakdown Voltage and Low Specific On-Resistance." Micromachines 14, no. 6 (2023): 1166. http://dx.doi.org/10.3390/mi14061166.

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A novel VDMOS with the GaN/Si heterojunction (GaN/Si VDMOS) is proposed in this letter to optimize the breakdown voltage (BV) and the specific on-resistance (Ron,sp) by Breakdown Point Transfer (BPT), which transfers the breakdown point from the high-electric-field region to the low-electric-field region and improves the BV compared with conventional Si VDMOS. The results of the TCAD simulation show that the optimized BV of the proposed GaN/Si VDMOS increases from 374 V to 2029 V compared with the conventional Si VDMOS with the same drift region length of 20 μm, and the Ron,sp of 17.2 mΩ·cm2 i
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46

Lark, R. M. "Some Results on the Spatial Breakdown Point of Robust Point Estimates of the Variogram." Mathematical Geosciences 40, no. 7 (2008): 729–51. http://dx.doi.org/10.1007/s11004-008-9162-8.

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47

Shaharudin, S. M., N. Ahmad, N. H. Zainuddin, and N. S. Mohamed. "Identification of Rainfall Patterns on Hydrological Simulation Using Robust Principal Component Analysis." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 3 (2018): 1162. http://dx.doi.org/10.11591/ijeecs.v11.i3.pp1162-1167.

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A robust dimension reduction method in Principal Component Analysis (PCA) was used to rectify the issue of unbalanced clusters in rainfall patterns due to the skewed nature of rainfall data. A robust measure in PCA using Tukey’s biweight correlation to downweigh observations was introduced and the optimum breakdown point to extract the number of components in PCA using this approach is proposed. A set of simulated data matrix that mimicked the real data set was used to determine an appropriate breakdown point for robust PCA and compare the performance of the both approaches. The simulated data
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48

Izdebski, Mariusz, Marianna Jacyna, and Jerzy Bogdański. "Minimisation of the Energy Expenditure of Electric Vehicles in Municipal Service Companies, Taking into Account the Uncertainty of Charging Point Operation." Energies 17, no. 9 (2024): 2179. http://dx.doi.org/10.3390/en17092179.

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This article presents an original method for minimising the energy expenditure of electric vehicles used in municipal service undertakings, taking into account the uncertainty in the functioning of their charging points. The uncertainty of the charging points’ operation was presented as the probability of the occurrence of an emergency situation hindering a point’s operation, e.g., a breakdown or lack of energy supply. The problem is how to calculate the driving routes of electric vehicles so that they will arrive at charging points at times at which there is a minimal probability of breakdown
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49

Yogeswari, A., and T. Chitrakalarani. "Time To Breakdown Point Of An Organization –Cumulative Damage Model." Scientific Transactions in Enviornment and Technovation 4, no. 4 (2011): 161–63. http://dx.doi.org/10.20894/stet.116.004.004.004.

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50

Chan, Wai-Sum. "Teaching the concept of breakdown point in simple linear regression." International Journal of Mathematical Education in Science and Technology 32, no. 5 (2001): 745–48. http://dx.doi.org/10.1080/00207390110053441.

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