Journal articles: 'Gavin Holt'

1

Hirsch, J. E. "Hole superconductivity from kinetic energy gain." Physica C: Superconductivity 341-348 (November 2000): 213–16. http://dx.doi.org/10.1016/s0921-4534(00)00452-4.

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Nyitrai, Gábor, Gergő Hamar, Gábor Galgóczi, and Dezső Varga. "MPGD hole-by-hole gain scanning by UV excited single photoelectron detection." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 958 (April 2020): 162726. http://dx.doi.org/10.1016/j.nima.2019.162726.

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Wandreal, Johansson. "Is Black Hole A Hole?" Science Insights 28, no. 3 (April 15, 2019): 29–32. http://dx.doi.org/10.15354/si.19.vw011.

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The first picture of block hole was released on April 10th, 2019. This breakthrough came after a decade of collaborate work to align the myriad parts of the giant project and gain the highest resolution possible from the Earth’s surface. Even from our original consideration, block hole is a mysterious greedy hole that can suck anything away no matter how big the matter is. However, the newly released results indicated that block hole is not the imaginary hole; it is as a dark shadow within a doughnut-like ring of hot, glowing material with almost the size of our solar system.

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Keilmann, Fritz, and Hanna Zuckermann. "Transient gain of the germanium hot hole laser." Optics Communications 109, no. 3-4 (July 1994): 296–303. http://dx.doi.org/10.1016/0030-4018(94)90696-3.

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5

Ooi, Tat Lung Wesley, Pei Ling Cheang, Ah Heng You, and Yee Kit Chan. "Mean multiplication gain and excess noise factor of GaN and Al0.45Ga0.55N avalanche photodiodes." European Physical Journal Applied Physics 92, no. 1 (October 2020): 10301. http://dx.doi.org/10.1051/epjap/2020200067.

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In this work, Monte Carlo model is developed to investigate the avalanche characteristics of GaN and Al0.45Ga0.55N avalanche photodiodes (APDs) using random ionization path lengths incorporating dead space effect. The simulation includes the impact ionization coefficients, multiplication gain and excess noise factor for electron- and hole-initiated multiplication with a range of thin multiplication widths. The impact ionization coefficient for GaN is higher than that of Al0.45Ga0.55N. For GaN, electron dominates the impact ionization at high electric field while hole dominate at low electric field whereas Al0.45Ga0.55N has hole dominate the impact ionization at higher field while electron dominate the lower field. In GaN APDs, electron-initiated multiplication is leading the multiplication gain at thinner multiplication widths while hole-initiated multiplication leads for longer widths. However for Al0.45Ga0.55N APDs, hole-initiated multiplication leads the multiplication gain for all multiplication widths simulated. The excess noise of electron-initiated multiplication in GaN APDs increases as multiplication widths increases while the excess noise decreases as the multiplication widths increases for hole-initiated multiplication. As for Al0.45Ga0.55N APDs, the excess noise for hole-initiated multiplication increases when multiplication width increases while the electron-initiated multiplication increases with the same gradient at all multiplication widths.

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Pleumeekers, J. L., M. A. Dupertuis, T. Hessler, P. E. Selbmann, S. Haacke, and B. Deveaud. "Longitudinal spatial hole burning and associated nonlinear gain in gain-clamped semiconductor optical amplifiers." IEEE Journal of Quantum Electronics 34, no. 5 (May 1998): 879–86. http://dx.doi.org/10.1109/3.668776.

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7

Logsdon, J. M. "Worm genomes hold the smoking guns of intron gain." Proceedings of the National Academy of Sciences 101, no. 31 (July 26, 2004): 11195–96. http://dx.doi.org/10.1073/pnas.0404148101.

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Beruete, M., I. Campillo, J. E. RodrÍguez-Seco, E. Perea, M. Navarro-CÍa, I. J. NÚÑez-Manrique, and M. Sorolla. "Enhanced Gain by Double-Periodic Stacked Subwavelength Hole Array." IEEE Microwave and Wireless Components Letters 17, no. 12 (December 2007): 831–33. http://dx.doi.org/10.1109/lmwc.2007.910470.

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9

Huang, Y. C., R. H. Pantell, J. F. Schmerge, and J. Feinstein. "Maximization of FEL gain for a hole-coupled resonator." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 358, no. 1-3 (April 1995): 315–18. http://dx.doi.org/10.1016/0168-9002(94)01512-0.

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10

Brücken, Erik, Jouni Heino, Timo Hildén, Matti Kalliokoski, Vladyslav Litichevskyi, Raimo Turpeinen, and Dezső Varga. "Hole misalignment and gain performance of Gaseous Electron Multipliers." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1002 (June 2021): 165271. http://dx.doi.org/10.1016/j.nima.2021.165271.

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11

Søltoft, Pia. "Giveren, gaven, modtageren og gensidigheden." Dansk Teologisk Tidsskrift 76, no. 2 (May 10, 2013): 95–114. http://dx.doi.org/10.7146/dtt.v76i2.105666.

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In this article we will read Kierkegaard in continuation of theun-going debate about the economy of the gift. I will argue that Kierkegaard’snotion of love as a three-part-relation in many ways exceedsthe insights in the economy of the gift that Marcel Mauss gained holdof in his anthropologic studies in 1925. Insights which have led to anun-going debate about the “pureness” of the gift between philosopherslike Jacques Derrida, Emmanuel Lévinas and Jean-Luc Marion andin recent theological studies as the ones by Bo Holm og Niels HenrikGregersen. In what follows I will put attention to how Kierkegaard inhis upbuilding discourses and in Works of Love describes love as a specialmutual relation between the lover (the giver) the beloved (the receiver)and love itself (the gift). Hereby I wish to show that Kierkegaard’s notionof love contains a deliberate contribution to the recent debate of theeconomy of the gift.

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12

Dubinov, Alexander A., and Vladimir Ya Aleshkin. "Calculation of Modal Gain for Terahertz Lasers Based on HgCdTe Heterostructures with Quantum Wells." International Journal of High Speed Electronics and Systems 25, no. 03n04 (September 2016): 1640018. http://dx.doi.org/10.1142/s0129156416400188.

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In this work we calculate and analyze modal gain for terahertz lasers based on HgCdTe heterostructures with quantum wells (QWs) taking into account the symmetry-enforced light hole-heavy hole mixing at the quantum well interfaces. We have found that modal gain for a structure with 5 HgTe QWs of the 5.2 nm width can be 33 cm−1 at 9 THz.

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13

Keller, H., T. Hebbeker, K. Hoepfner, G. Mocellin, and S. Zaleski. "Influence of hole geometry on gas gain in GEM detectors." Journal of Instrumentation 15, no. 06 (June 1, 2020): C06004. http://dx.doi.org/10.1088/1748-0221/15/06/c06004.

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14

Karadzhinova, A., A. Nolvi, R. Veenhof, E. Tuominen, E. Hæggström, and I. Kassamakov. "Impact of GEM foil hole geometry on GEM detector gain." Journal of Instrumentation 10, no. 12 (December 18, 2015): P12014. http://dx.doi.org/10.1088/1748-0221/10/12/p12014.

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15

di Cataldo, G., G. Palmisano, and G. Palumbo. "Gain-compensated sample-and-hold circuit for high frequency application." Electronics Letters 29, no. 15 (1993): 1347. http://dx.doi.org/10.1049/el:19930903.

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16

FUSTOS, Adrian, Liviu HOLONEC, Tabita Teodora LISANDRU, and Florin REBREAN. "Comparative Studies Of Oak (Quercus Petraea L.) Reservations Within Cluj Forestry." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 74, no. 1 (May 19, 2017): 63. http://dx.doi.org/10.15835/buasvmcn-hort:12637.

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In Romania it is necessary a sustained effort to extend the forest areas through artificial regeneration. The purpose of this study is to show the correlation between the heights and diameters of Quercus petraea trees from seed reserves and their seed production. They were chosen 80 trees situated in four Quercus petraea seed reserves of Cluj County. The trees selected were located at a distance of 30 meters from each other. It has been found that the two measured variables (core diameter and trees height) are direct positive correlated, in the sense that increasing the value of a variable and thus leads to an increase in the other. Choosing trees with special qualities have great importance when it comes to transmitting genetic gain new generations. Comprehensive analysis of stationary and vegetation characteristics result in reproductive material with significant values as seeds quality and adaptability.

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17

Nicholls, Jack. "Gavin Wakefield, Saints and Holy Places of Yorkshire: A Pilgrims' Guide to God's Own County." Theology 124, no. 3 (May 2021): 228–29. http://dx.doi.org/10.1177/0040571x211008551p.

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18

Yang, Zi-Xian, Chia-Yu Kuo, and Gray Lin. "Simulation of Photonic-Crystal Surface-Emitting Lasers with Air-Hole and Air-Pillar Structures." Photonics 8, no. 6 (May 27, 2021): 189. http://dx.doi.org/10.3390/photonics8060189.

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Photonic-crystal surface-emitting lasers (PC-SELs), with and without regrowth, are theoretically simplified as air-hole and air-pillar structures, respectively. In this paper, square-latticed air-hole and air-pillar PC-SELs are simulated by a three-dimensional coupled-wave theory model and the design guideline is illustrated with a PC basis of a right isosceles triangular and double circular shapes. The optimum PC filling factor is determined by infinite PC cavity analysis and the slope efficiency of finite-size PC-SEL is then calculated for the lowest threshold band-edge mode. In comparison with air-hole PC-SEL, air-pillar PC-SEL exhibits lower threshold gain, larger gain discrimination but lower slope efficiency. To achieve slope efficiency of comparable value, the cavity area of air-pillar PC-SEL is about four times larger than that of air-hole PC-SEL.

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19

Abdelaziz, Zakaria, and Zakaria Mahmoud. "Past-Tense Verbs of Futurity in the Holy Quran: A New Text-World Theory Approach." International Journal of Applied Linguistics and English Literature 7, no. 7 (December 1, 2018): 110. http://dx.doi.org/10.7575/aiac.ijalel.v.7n.7p.110.

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Since the publication of Paul Werth’s (1999) seminal work Text Worlds: Representing Conceptual Space in Discourse, Text World Theory has undergone various modifications and development. In this paper, I attempt to apply the text-world model to two neglected areas of research which are the Arabic language and the Holy Quran. I particularly examine the text-worlds constructed by Arabic past-tense verbs or perfect verbs which express futurity in the Holy Quran. Drawing on my analysis of a number of such Arabic verbs, I argue that the text-world model proposed by Werth and Gavins is not particularly valid for the proposed study of Arabic past-tense verbs or perfect verbs which express futurity in the Holy Quran. Rather, I argue that introducing a new type of world which is a confirmed-unrealized text-world to the text-world framework is more effective for the study of the Holy Quran as a sacred and heavenly text. This paper argues further that Gavins’ notion of split discourse-world which is used for written communications is not particularly valid for the Holy Quran as a Godly transcript. Instead, the Holy Quran should be dealt with as a type of spoken discourse.

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20

Paudel, Hari Ram, Lucas José Karas, and Judy I.-Chia Wu. "On the reciprocal relationship between σ-hole bonding and (anti)aromaticity gain in ketocyclopolyenes." Organic & Biomolecular Chemistry 18, no. 27 (2020): 5125–29. http://dx.doi.org/10.1039/d0ob01076f.

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σ-Hole bonding interactions (e.g., tetrel, pnictogen, chalcogen, and halogen bonding) can polarize π-electrons to enhance cyclic [4n] π-electron delocalization (i.e., antiaromaticity gain) or cyclic [4n + 2] π-electron delocalization (i.e., aromaticity gain).

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21

Rossi, Mauro, and Daniel E. Miller. "Gain/phase margin improvement using static generalized sampled-data hold functions." Systems & Control Letters 37, no. 3 (July 1999): 163–72. http://dx.doi.org/10.1016/s0167-6911(99)00016-x.

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22

Tsujino, Soichiro. "Optical gain of two-dimensional hole gas by intersubband Raman transitions." Journal of Applied Physics 112, no. 2 (July 15, 2012): 023508. http://dx.doi.org/10.1063/1.4737575.

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23

Zhang, Dezhong, Chunyu Liu, Kanzhe Li, Wenbin Guo, Fengli Gao, Jingran Zhou, Xindong Zhang, and Shengping Ruan. "Trapped-Electron-Induced Hole Injection in Perovskite Photodetector with Controllable Gain." Advanced Optical Materials 6, no. 4 (January 9, 2018): 1701189. http://dx.doi.org/10.1002/adom.201701189.

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24

Kamide, Kenji, Masahiro Yoshita, Hidefumi Akiyama, Makoto Yamaguchi, and Tetsuo Ogawa. "Fano-Resonance Gain by Dephasing Electron–Hole Cooper Pairs in Semiconductors." Journal of the Physical Society of Japan 81, no. 9 (September 15, 2012): 093706. http://dx.doi.org/10.1143/jpsj.81.093706.

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25

Henneberger, K., F. Herzel, S. W. Koch, R. Binder, A. E. Paul, and D. Scott. "Spectral hole burning and gain saturation in short-cavity semiconductor lasers." Physical Review A 45, no. 3 (February 1, 1992): 1853–59. http://dx.doi.org/10.1103/physreva.45.1853.

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26

Meissner, K., B. Fluegel, H. Giessen, B. P. McGinnis, A. Paul, R. Binder, S. W. Koch, N. Peyghambarian, M. Grün, and C. Klingshirn. "Spectral hole burning in the gain region of an inverted semiconductor." Physical Review B 48, no. 20 (November 15, 1993): 15472–75. http://dx.doi.org/10.1103/physrevb.48.15472.

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27

Wentworth, R. H. "Large-scale longitudinal spatial-hole burning contribution to laser gain compression." IEEE Journal of Quantum Electronics 29, no. 7 (July 1993): 2145–53. http://dx.doi.org/10.1109/3.237488.

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28

Inoue, Hajime. "Wandering of the central black hole in a galactic nucleus and correlation of the black hole mass with the bulge mass." Publications of the Astronomical Society of Japan 73, no. 2 (February 16, 2021): 431–38. http://dx.doi.org/10.1093/pasj/psab009.

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Abstract We investigate a mechanism for a super-massive black hole at the center of a galaxy to wander in the nucleus region. A situation is supposed in which the central black hole tends to move by the gravitational attractions from the nearby molecular clouds in a nuclear bulge but is braked via the dynamical frictions from the ambient stars there. We estimate the approximate kinetic energy of the black hole in an equilibrium between the energy gain rate through the gravitational attractions and the energy loss rate through the dynamical frictions in a nuclear bulge composed of a nuclear stellar disk and a nuclear stellar cluster as observed from our Galaxy. The wandering distance of the black hole in the gravitational potential of the nuclear bulge is evaluated to get as large as several 10 pc, when the black hole mass is relatively small. The distance, however, shrinks as the black hole mass increases, and the equilibrium solution between the energy gain and loss disappears when the black hole mass exceeds an upper limit. As a result, we can expect the following scenario for the evolution of the black hole mass: When the black hole mass is smaller than the upper limit, mass accretion of the interstellar matter in the circumnuclear region, causing the AGN activities, makes the black hole mass larger. However, when the mass gets to the upper limit, the black hole loses the balancing force against the dynamical friction and starts spiraling downward to the gravity center. From simple parameter scaling, the upper mass limit of the black hole is found to be proportional to the bulge mass, and this could explain the observed correlation of the black hole mass with the bulge mass.

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Falsetta, Diana, and Richard A. White. "The Impact of Income Tax Withholding Position and Stock Position on the Sale of Stock." Journal of the American Taxation Association 27, no. 1 (March 1, 2005): 1–23. http://dx.doi.org/10.2308/jata.2005.27.1.1.

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The objective of this study is to investigate the effect that stock position (gain or loss) and income tax withholding position (tax payment or tax refund) have on the sale of stock at the end of the year. Prior investigations of stock position have shown that individuals are more likely to sell gain stocks and hold loss stocks (e.g., the disposition effect). However, studies also have found this pattern of behavior to reverse at year-end in an effort to reduce tax liabilities. We conduct two experiments (baseline and primary) to compare the sell or hold decision of participants with either a gain or loss stock. Results of the baseline experiment confirm the disposition effect. However, when participants become more sensitive to tax considerations, the results of the primary experiment support the tax-loss selling hypothesis. That is, participants tend to sell loss stocks and hold gain stocks. These results, while consistent with the tax-loss selling hypothesis, are contrary to the disposition effect, indicating that these effects are strongest when tax considerations are not a primary factor in the decision process. Furthermore, contrary to expectations, participants are not influenced by income tax withholding position. Their propensity to sell loss stocks relative to gain stocks at year-end is the same whether they are faced with a tax payment or a tax refund.

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Berti, Emanuele, Vitor Cardoso, Luis C. B. Crispino, Leonardo Gualtieri, Carlos Herdeiro, and Ulrich Sperhake. "Numerical relativity and high energy physics: Recent developments." International Journal of Modern Physics D 25, no. 09 (August 2016): 1641022. http://dx.doi.org/10.1142/s0218271816410224.

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We review recent progress in the application of numerical relativity techniques to astrophysics and high-energy physics. We focus on recent developments regarding the spin evolution in black hole binaries, high-energy black hole collisions, compact object solutions in scalar–tensor gravity, superradiant instabilities, hairy black hole solutions in Einstein’s gravity coupled to fundamental fields, and the possibility to gain insight into these phenomena using analog gravity models.

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31

FUENTES, Francisco, Atul BHARGAVA, and Claudia ROJAS BERTINI. "Early Mass Selection Response of Two Quinoa Landraces under Highlands Conditions in Northern Chile." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 77, no. 2 (November 18, 2020): 15. http://dx.doi.org/10.15835/buasvmcn-hort:2020.0059.

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Quinoa has been cultivated since centuries in the Andean region as a seed crop by indigenous communities. The crop has gained renewed interest because of its highly nutritious grain with high-quality protein rich in essential amino acids, and several bioactive compounds, along with its ability to grow under stress conditions. Despite the importance of the crop, limited research work on breeding aspects has been undertaken, leading to lack of information on the understanding of levels of variability of genotypes for different traits and their interactions. The aim of the present study was to assess and quantify the early response to mass selection in two quinoa landraces in highland conditions. Mass selection experiments were conducted during two successive crop seasons using eleven morphological traits. Correlation, genetic gain (gg) per selection cycle and principal component analysis was carried out. Only plant height (PH) and number of branches (NB) presented changes between selection cycles in both germplasm lines. Grain yield per plant (GYP) was positively correlated with inflorescence length (IL), stem diameter (SD) and plant weight (PW) for both quinoa lines. The results obtained would be useful to facilitate selection of the most relevant variables of quinoa considering its variation and interactions in the highland environment in Chile.

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32

Zou, R. "Design of High Performance Sample Hold Amplifier for Pipeline ADC." Applied Mechanics and Materials 743 (March 2015): 244–47. http://dx.doi.org/10.4028/www.scientific.net/amm.743.244.

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A fully-differential switched-capacitor sample-and-hold amplifier (SHA) used in a 10-bit 30-MS/s pipeline analog-to-digital converter (ADC) was designed using a 0.13-μm CMOS process. Flip-around architecture was used in the SHA circuit to lower the power consumption. A gain-boosted operational amplifier (OPAMP) was designed with a DC gain of 87 dB and a unit gain bandwidth of 388MHz at a phase margin of 75 degree. The simulated results have shown that the SHA circuit reaches a spurious free dynamic range (SFDR) of 94 dB and a signal-to-noise ratio (SNR) of 76 dB for a 10.18 MHz input signal with 30 MS/s sampling rate.

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33

Ghosh, Moumita, Mangolika Mondal, and Aritra Acharyya. "The Effect of Electron versus Hole Photocurrent on Optoelectric Properties of p+-p-n-n+ Wz-GaN Reach-Through Avalanche Photodiodes." Advances in OptoElectronics 2013 (March 25, 2013): 1–12. http://dx.doi.org/10.1155/2013/840931.

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The authors have made an attempt to investigate the effect of electron versus hole photocurrent on the optoelectric properties of p+-p-n-n+ structured Wurtzite-GaN (Wz-GaN) reach-through avalanche photodiodes (RAPDs). The photo responsivity and optical gain of the devices are obtained within the wavelength range of 300 to 450 nm using a novel modeling and simulation technique developed by the authors. Two optical illumination configurations of the device such as Top Mounted (TM) and Flip Chip (FC) are considered for the present study to investigate the optoelectric performance of the device separately due to electron dominated and hole dominated photocurrents, respectively, in the visible-blind ultraviolet (UV) spectrum. The results show that the peak unity gain responsivity and corresponding optical gain of the device are 555.78 mA W−1 and 9.4144×103, respectively, due to hole dominated photocurrent (i.e., in FC structure); while those are 480.56 mA W−1 and 7.8800×103, respectively, due to electron dominated photocurrent (i.e., in TM structure) at the wavelength of 365 nm and for applied reverse bias of 85 V. Thus, better optoelectric performance of Wz-GaN RAPDs can be achieved when the photocurrent is made hole dominated by allowing the UV light to be shined on the n+-layer instead of p+-layer of the device.

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He, Dongshan, and Qingyu Cai. "Area Entropy and Quantized Mass of Black Holes from Information Theory." Entropy 23, no. 7 (July 3, 2021): 858. http://dx.doi.org/10.3390/e23070858.

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In this paper, we present a derivation of the black hole area entropy with the relationship between entropy and information. The curved space of a black hole allows objects to be imaged in the same way as camera lenses. The maximal information that a black hole can gain is limited by both the Compton wavelength of the object and the diameter of the black hole. When an object falls into a black hole, its information disappears due to the no-hair theorem, and the entropy of the black hole increases correspondingly. The area entropy of a black hole can thus be obtained, which indicates that the Bekenstein–Hawking entropy is information entropy rather than thermodynamic entropy. The quantum corrections of black hole entropy are also obtained according to the limit of Compton wavelength of the captured particles, which makes the mass of a black hole naturally quantized. Our work provides an information-theoretic perspective for understanding the nature of black hole entropy.

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Gravagne, Ian A., John M. Davis, and Jeffrey J. DaCunha. "A Unified Approach to High-Gain Adaptive Controllers." Abstract and Applied Analysis 2009 (2009): 1–13. http://dx.doi.org/10.1155/2009/198353.

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It has been known for some time that proportional output feedback will stabilize MIMO, minimum-phase, linear time-invariant systems if the feedback gain is sufficiently large. High-gain adaptive controllers achieve stability by automatically driving up the feedback gain monotonically. More recently, it was demonstrated that sample-and-hold implementations of the high-gain adaptive controller also require adaptation of the sampling rate. In this paper, we use recent advances in the mathematical field of dynamic equations on time scales to unify and generalize the discrete and continuous versions of the high-gain adaptive controller. We prove the stability of high-gain adaptive controllers on a wide class of time scales.

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Hall, Martin T., Anna Scheyett, and Kimberly Strom-Gottfried. "No Gain, No Pain: Ethics and the Genomic Revolution." Families in Society: The Journal of Contemporary Social Services 89, no. 4 (October 2008): 562–70. http://dx.doi.org/10.1606/1044-3894.3820.

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The mapping of the human genome and scientific discoveries regarding genetic contributions to disease hold great promise for the prevention and treatment of an array of conditions. Social workers and other professionals must keep abreast of these developments and the ethical dimensions of such progress. Familiar ethical provisions such as confidentiality, informed consent, self-determination, and social justice take on new meaning in light of innovations in genetic science. This article reviews ethical issues and practice implications emerging from advances in genetics knowledge, and it suggests mechanisms for continuing professional development and involvement in this important area.

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Wang, Zhi Gang, and Hao Ding. "A Millimeter-Wave SIW Gain Equalizer Using LTCC Technology." Applied Mechanics and Materials 789-790 (September 2015): 515–18. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.515.

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This paper presents a novel structure of millimeter-wave amplitude equalization based on low temperature co-fired ceramic (LTCC) technology, which is implemented by substrate integrated waveguide (SIW) resonator, thin film resistor, microstrip-line and metallic via hole probe. It has advantages of compact, easy for integration, low cost, low loss, and mass-producible. The effects of each component for equalizer performance have been analyzed by simulation. In order to validate the new proposed topology, a millimeter-wave gain equalizer is developed and verified by full-wave simulation using 9-layers Ferro A6 substrates. The designed equalizer exhibits excellent performances.

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Wartak, M. S., P. Weetman, T. Alajoki, J. Aikio, V. Heikkinen, N. A. Pikhtin, and P. Rusek. "Optical modal gain in multiple quantum-well semiconductor lasers based on InP." Canadian Journal of Physics 84, no. 1 (January 1, 2006): 53–66. http://dx.doi.org/10.1139/p06-005.

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An approach to determine the optical modal gain spectra in multiple quantum-well semiconductor lasers based on InP in terms of the current at electrodes is presented. The link between the current at the electrodes and the density of carriers inside each quantum well was provided by rate equations with the inclusion of carrier transport effects. Description of hole dispersion is based on a 4 × 4 Luttinger–Kohn Hamiltonian and was done with the electrostatic effects of the carrier charges. Electrostatic effects were included via a self-consistent solution of electron and hole wave equations and the Poisson equation. The optical gain for the TE (transverse electric) mode has been determined with the inclusion of non-Markovian effects, Coulombic enhancement, and band-gap renormalization. The theoretical approach was compared with experimental measurements of the optical gain on a laser structure consisting of four quantum wells using the Hakki–Paoli method. The important role played by the leakage current was revealed when the results were compared. PACS No.: 73.63.Hs, 78.20.Bh, 78.20.Ci

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Serra, Yann, Xavier Ficquet, and Ed Kingston. "Residual Stress Measurement Using the Hole Drilling Technique on Components outside the ASTM E837 Standard." Advanced Materials Research 996 (August 2014): 301–6. http://dx.doi.org/10.4028/www.scientific.net/amr.996.301.

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The hole drilling technique is probably the most widely used residual stress measurement technique. The ASTM E837 standard covers hole drilling measurements for thin and thick specimens. VEQTER have encountered several cases when the specimen was between the thick and thin specification. In order to gain a greater understanding of the sensitivity of the analyses and accurately measure the residual stresses using the hole drilling technique within intermediate thickness specimens and within thin specimens containing non-uniform residual stresses a study was performed.

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Bobeico, Eugenia, Lucia V. Mercaldo, Pasquale Morvillo, Iurie Usatii, Marco Della Noce, Laura Lancellotti, Carmen Sasso, Rosa Ricciardi, and Paola Delli Veneri. "Evaporated MoOx as General Back-Side Hole Collector for Solar Cells." Coatings 10, no. 8 (August 6, 2020): 763. http://dx.doi.org/10.3390/coatings10080763.

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Substoichiometric molybdenum oxide (MoOx) has good potential as a hole-collecting layer in solar cells. In this paper, we report on the application of ultrathin evaporated MoOx as a hole collector at the back side of two distinct photovoltaic technologies: polymeric and silicon heterojunction (SHJ). In the case of polymer solar cells, we test MoOx as a hole transport layer in devices with inverted architecture. The higher transparency of the MoOx film, compared to the commonly used poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), allows an enhanced back reflected light into the photoactive layer, thus boosting the photogeneration, as found from the illuminated J-V and external quantum efficiency (EQE) curves. The higher fill factor (FF) of the MoOx-based device also suggests an improved charge collection efficiency compared to the cells with PEDOT:PSS. As for SHJ solar cells, we show that MoOx offers the means for dopant-free hole collection with both p-type and n-type Si wafers. In the present comparison over planar test structures with Ag back reflecting electrodes, we observe an efficiency gain of approximately 1% absolute against a baseline with a conventional p-type amorphous silicon hole collector. The gain is linked to the increased VOC, which is likely due to the reduced recombination at the Si wafer.

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Yu, Junting, Maoqiu Li, Chao Xu, Fanyuan Meng, Jiamin Cao, Hua Tan, and Weiguo Zhu. "Near-infrared cyclometalated iridium(iii) complexes with bipolar features for efficient OLEDs via solution-processing." Dalton Transactions 49, no. 25 (2020): 8785–90. http://dx.doi.org/10.1039/d0dt01415j.

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Procter, Simon. "Kris Kristofferson/John Holt—‘Help Me Make It Through The Night’." Suomen Antropologi: Journal of the Finnish Anthropological Society 43, no. 2 (February 6, 2019): 92–95. http://dx.doi.org/10.30676/jfas.v43i2.77710.

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As with all the contributors here, my chosen song comes from fieldwork. I spent time in an urban UK mental health community setting, a place which nobody has to attend (it is not part of the statutory psychiatric system), but where people choose to spend time to gain various kinds of support – formal and informal – whilst in other respects living independently despite (in most cases) having a psychiatric diagnosis. Most service users with whom I spent time were male, over forty, long-term unemployed, living on the economic edge, ever fearful about having their benefits withdrawn, and diagnosed with some form of mental illness, most commonly paranoid schizophrenia. My primary reason for being there was to participate in and observe the various interactions around the provision of music in general and music therapy in particular.

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Naik, N. K., and K. Rajaiah. "Effect of Change of Load Direction on SCF for Optimized Quasi-Square Hole in Isotropic Plates." Journal of Ship Research 29, no. 03 (September 1, 1985): 206–8. http://dx.doi.org/10.5957/jsr.1985.29.3.206.

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Determination of optimum quasi-square hole shape with minimum stress concentration in isotropic plates under uniaxial inplane loading is an important engineering problem in ship design. For such an optimized hole, the tensile and compressive boundaries are respectively having constant stress values. It should be noted that optimized shapes apply only to the loading conditions and specified geometric constraints. In actual practice, if the load axis for the optimized hole is tilted, the stress concentrations on the hole boundary will be increased. It is observed that the load axis tilt angle β can be as large as 11 deg on tensile region and 17 deg on compressive region before the load axis tilting negates the gain due to hole shape optimization for uniaxial tensile loading compared with a circular hole.

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Temes, G. C., Yunteng Huang, and P. F. Ferguson. "A high-frequency track-and-hold stage with offset and gain compensation." IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 42, no. 8 (1995): 559–61. http://dx.doi.org/10.1109/82.404076.

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Zenteno, L. A., J. Wang, D. T. Walton, B. A. Ruffin, M. J. Li, S. Gray, A. Crowley, and X. Chen. "Suppression of Raman gain in single-transverse-mode dual-hole-assisted fiber." Optics Express 13, no. 22 (2005): 8921. http://dx.doi.org/10.1364/opex.13.008921.

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Takushima, Yuichi, and Kazuro Kikuchi. "Spectral gain hole burning and modulation instability in a Brillouin fiber amplifier." Optics Letters 20, no. 1 (January 1, 1995): 34. http://dx.doi.org/10.1364/ol.20.000034.

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Chang Yang and P. T. Kabamba. "Multi-channel output gain margin improvement using generalized sampled-data hold functions." IEEE Transactions on Automatic Control 39, no. 3 (March 1994): 657–61. http://dx.doi.org/10.1109/9.280782.

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Kikuchi, Kenji, Yuji Ohkawa, Kazunori Miyakawa, Tomoki Matsubara, Kenkichi Tanioka, Misao Kubota, and Norifumi Egami. "Hole-blocking mechanism in high-gain avalanche rushing amorphous photoconductor (HARP) film." physica status solidi (c) 8, no. 9 (May 2, 2011): 2800–2803. http://dx.doi.org/10.1002/pssc.201084055.

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Agrawal, Govind P. "Spectral hole‐burning and gain saturation in semiconductor lasers: Strong‐signal theory." Journal of Applied Physics 63, no. 4 (February 15, 1988): 1232–35. http://dx.doi.org/10.1063/1.339990.

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Nakazato, K., and T. Nakamura. "Hole-spreading effect on upward current gain in n-p-n transistors." IEEE Transactions on Electron Devices 32, no. 5 (May 1985): 965–71. http://dx.doi.org/10.1109/t-ed.1985.22054.

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Journal articles on the topic 'Gavin Holt'

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