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Artykuły w czasopismach na temat „Weak Inversion Region”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Forti, F., and M. E. Wright. "Measurement of MOS current mismatch in the weak inversion region." IEEE Journal of Solid-State Circuits 29, no. 2 (1994): 138–42. http://dx.doi.org/10.1109/4.272119.

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Dei, Michele. "Heuristic Enz–Krummenacher–Vittoz (EKV) Model Fitting for Low-Power Integrated Circuit Design: An Open-Source Implementation." Electronics 14, no. 6 (2025): 1162. https://doi.org/10.3390/electronics14061162.

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Accurate parameter extraction for the Enz–Krummenacher–Vittoz (EKV) model is crucial for low-power integrated circuit design, especially in weak and moderate inversion regions. This work introduces a novel iterative subranging (ISR) technique for EKV model fitting, implemented in Python (version 3.10.12) using SciPy (version 1.10.1), NumPy (version 1.24.3), and Matplotlib (version 3.7.1). The core of the methodology is the Fitter class, which refines the threshold voltage (VTH) by progressively narrowing the fitting range, controlled by the fit_range_parameter. This approach achieves a relativ

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3

Fan, Hua, Peng Lei, Jingxuan Yang, et al. "A high-efficient dynamic comparator with low-offset in weak inversion region." Analog Integrated Circuits and Signal Processing 110, no. 1 (2021): 175–83. http://dx.doi.org/10.1007/s10470-021-01950-8.

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Comer, D. J., and D. T. Comer. "Operation of Analog MOS Circuits in the Weak or Moderate Inversion Region." IEEE Transactions on Education 47, no. 4 (2004): 430–35. http://dx.doi.org/10.1109/te.2004.825537.

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Kalra, Shruti, and Amalendu B. Bhattacharyya. "Ultra Low Power Design for Digital CMOS Circuits Operating Near Threshold." International Journal of Electronics and Telecommunications 63, no. 4 (2017): 369–74. http://dx.doi.org/10.1515/eletel-2017-0050.

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Abstract Circuits operating in the subthreshold region are synonymous to low energy operation. However, the penalty in performance is colossal. In this paper, we investigate how designing in moderate inversion region recuperates some of that lost performance, while remaining very near to the minimum energy point. An power based minimum energy delay modeling that is continuous over the weak, moderate, and strong inversion regions is presented. The value of α is obtained through interpolation following EKV model. The effect of supply voltage and device sizing on the minimum energy and performanc

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Ma, Guoqing, Lingwei Meng, and Lili Li. "Fast Magnetization Vector Inversion Method with Undulating Observation Surface in Spherical Coordinate for Revealing Lunar Weak Magnetic Anomaly Feature." Remote Sensing 16, no. 2 (2024): 432. http://dx.doi.org/10.3390/rs16020432.

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The three-dimensional magnetic vector structure (magnetization intensity and direction) of the planet can be effectively used to analyze the characteristics of its formation and operation. However, the quick acquisition of a large region of the magnetic vector structure of the planet with bigger observation surfaces undulation is hard and indispensable. We firstly proposed a fast magnetization vector inversion method for the inversion of a magnetic anomaly with the undulating observation surfaces in the spherical coordinate system, which first transforms the data to a plane when the data are d

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7

Jinglin Shi, Yong Zhong Xiong, Kai Kang, Lan Nan, and Fujiang Lin. "RF Noise of 65-nm MOSFETs in the Weak-to-Moderate-Inversion Region." IEEE Electron Device Letters 30, no. 2 (2009): 185–88. http://dx.doi.org/10.1109/led.2008.2010464.

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Maag-Capriotti, Elizabeth, and Yaoguo Li. "Understanding the information content in gravity gradiometry data through constrained inversions for salt bodies." GEOPHYSICS 86, no. 4 (2021): G35—G53. http://dx.doi.org/10.1190/geo2019-0688.1.

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Gravity gradiometry inversion can provide important knowledge about a salt body and can assist in subsalt imaging. However, such inversions are faced with difficulties associated with the lack of response from the nil zone in which the salt density is nearly identical to that of the background sediments and weak signals from the deeper portion of the salt. It is well understood that such difficulties could be alleviated by incorporating prior information, such as the top of salt from seismic imaging and petrophysical data, into the inversions. How to effectively incorporate such prior informat

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9

Liesenborgs, Jori, Liliya L. R. Williams, Jenny Wagner, and Sven De Rijcke. "Extended lens reconstructions with grale: exploiting time-domain, substructural, and weak lensing information." Monthly Notices of the Royal Astronomical Society 494, no. 3 (2020): 3253–74. http://dx.doi.org/10.1093/mnras/staa842.

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ABSTRACT The information about the mass density of galaxy clusters provided by the gravitational lens effect has inspired many inversion techniques. In this article, updates to the previously introduced method in grale are described, and explored in a number of examples. The first looks into a different way of incorporating time delay information, not requiring the unknown source position. It is found that this avoids a possible bias that leads to ‘overfocusing’ the images, i.e. providing source position estimates that lie in a considerably smaller region than the true positions. The second is

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10

Comer, D. J., and D. T. Comer. "Using the weak inversion region to optimize input stage design of CMOS op amps." IEEE Transactions on Circuits and Systems II: Express Briefs 51, no. 1 (2004): 8–14. http://dx.doi.org/10.1109/tcsii.2003.821517.

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Guo, Zichen, Yuqiang Li, Xuyang Wang, Xiangwen Gong, Yun Chen, and Wenjie Cao. "Remote Sensing of Soil Organic Carbon at Regional Scale Based on Deep Learning: A Case Study of Agro-Pastoral Ecotone in Northern China." Remote Sensing 15, no. 15 (2023): 3846. http://dx.doi.org/10.3390/rs15153846.

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The North China agro–pastoral zone is a large, ecologically fragile zone in the arid and semi-arid regions. Quantitative remote sensing inversion of soil organic carbon (SOC) in this region can facilitate understanding of the current status of degraded land restoration and provide data support for carbon cycling research in the region. Deep learning (DNN) for SOC inversion has been W.a hot topic over the past decade, but there have been few studies at the regional scale in the arid and semi-arid zones. In this study, a DNN model with five hidden layers and five skip connections was established

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12

Cai, Q. Y., J. F. Jiang, B. Shen, and M. Z. Tong. "Intrinsic model for high Tc superconducting field effect transistor operating in the weak inversion region." Physica C: Superconductivity and its Applications 282-287 (August 1997): 2499–500. http://dx.doi.org/10.1016/s0921-4534(97)01350-6.

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13

Ardeleanu, Luminita, Mircea Radulian, Jan Šílený, and Giuliano Francesco Panza. "Source Parameters of Weak Crustal Earthquakes of the Vrancea Region from Short-period Waveform Inversion." pure and applied geophysics PAGEOPH 162, no. 3 (2005): 495–513. http://dx.doi.org/10.1007/s00024-004-2618-y.

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Miralda-Escudé, Jordi. "The Mass Distribution In Clusters Of Galaxies From Weak And Strong Lensing." Symposium - International Astronomical Union 173 (1996): 131–36. http://dx.doi.org/10.1017/s0074180900231136.

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This paper is intended as an introduction to the theory of weak lensing. A review of the inversion formula introduced by Kaiser and Squires is presented. We then prove the formula of the aperture densitometry method in a simple way that allows a clear understanding of where the various terms come from. This is particularly useful to measure quantitatively masses in any region of a lens. We then summarize what has been learned from observations of strong lensing about the dark matter distribution; weak lensing should provide similar information on larger scales in clusters of galaxies.

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15

Park, Ki-Min, Cheol Joo Moon, Sanghyun Paek та Youngjin Kang. "Synthesis, crystal structure and photophysical properties of chlorido[2-(2′,6′-difluoro-2,3′-bipyridin-6-yl-κN 1)-6-(pyridin-2-yloxy-κN)phenyl-κC 1]platinum(II)". Acta Crystallographica Section E Crystallographic Communications 77, № 2 (2021): 107–10. http://dx.doi.org/10.1107/s2056989021000128.

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The title compound, [Pt(C21H12F2N3O)Cl], crystallizes with two crystallographically independent molecules (A and B) in the asymmetric unit, which adopt similar conformations. The PtII atoms in both molecules adopt distorted square-planar geometries, coordinated by one C and two N atoms from the tridentate 2′,6′-difluoro-6-[3-(pyridin-2-yloxy)phenyl]-2,3′-bipyridine ligand and a chloride anion: the C and Cl atoms are trans. In the crystal, C—H...Cl/F hydrogen bonds, F...π and weak π–π stacking interactions between adjacent A and B molecules and between pairs of inversion-related B molecules lea

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16

Park, Ki-Min, Cheol Joo Moon, Sanghyun Paek та Youngjin Kang. "Synthesis, crystal structure and photophysical properties of chlorido[2-(2′,6′-difluoro-2,3′-bipyridin-6-yl-κN 1)-6-(pyridin-2-yloxy-κN)phenyl-κC 1]platinum(II)". Acta Crystallographica Section E Crystallographic Communications 77, № 2 (2021): 107–10. http://dx.doi.org/10.1107/s2056989021000128.

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The title compound, [Pt(C21H12F2N3O)Cl], crystallizes with two crystallographically independent molecules (A and B) in the asymmetric unit, which adopt similar conformations. The PtII atoms in both molecules adopt distorted square-planar geometries, coordinated by one C and two N atoms from the tridentate 2′,6′-difluoro-6-[3-(pyridin-2-yloxy)phenyl]-2,3′-bipyridine ligand and a chloride anion: the C and Cl atoms are trans. In the crystal, C—H...Cl/F hydrogen bonds, F...π and weak π–π stacking interactions between adjacent A and B molecules and between pairs of inversion-related B molecules lea

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17

Srivastava, Richa, Maneesha Gupta, and Urvashi Singh. "Fully Programmable Gaussian Function Generator Using Floating Gate MOS Transistor." ISRN Electronics 2012 (November 20, 2012): 1–5. http://dx.doi.org/10.5402/2012/148492.

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Floating gate MOS (FGMOS) based fully programmable Gaussian function generator is presented. The circuit combines the tunable property of FGMOS transistor, exponential characteristics of MOS transistor in weak inversion, and its square law characteristic in strong inversion region to implement the function. Two-quadrant current mode squarer is the core subcircuit of Gaussian function generator that helps to implement full Gaussian function for positive as well as negative input current. FGMOS implementation of the circuit reduces the current mismatching error and increases the tunability of th

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18

Fiorelli, Rafaella, Fernando Silveira, and Eduardo Peralias. "MOST Moderate–Weak-Inversion Region as the Optimum Design Zone for CMOS 2.4-GHz CS-LNAs." IEEE Transactions on Microwave Theory and Techniques 62, no. 3 (2014): 556–66. http://dx.doi.org/10.1109/tmtt.2014.2303476.

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Pati, Sudhansu Kumar, Hemant Pardeshi, Godwin Raj, N. Mohankumar, and Chandan Kumar Sarkar. "Flicker and thermal noise in an n-channel underlap DG FinFET in a weak inversion region." Journal of Semiconductors 34, no. 2 (2013): 024002. http://dx.doi.org/10.1088/1674-4926/34/2/024002.

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20

Roiha, H., G. M. Rubin, and K. O'Hare. "P element insertions and rearrangements at the singed locus of Drosophila melanogaster." Genetics 119, no. 1 (1988): 75–83. http://dx.doi.org/10.1093/genetics/119.1.75.

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Abstract DNA from the singed gene of Drosophila melanogaster was isolated using an inversion between a previously cloned P element at cytological location 17C and the hypermutable allele singed-weak. Five out of nine singed mutants examined have alterations in their DNA maps in this region. The singed locus is a hotspot for mutation during P-M hybrid dysgenesis, and we have analyzed 22 mutations induced by P-M hybrid dysgenesis. All 22 have a P element inserted within a 700-bp region. The precise positions of 10 P element insertions were determined and they define 4 sites within a 100-bp inter

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21

Li, Hao, Tanausú del Pino Alemán, Javier Trujillo Bueno, et al. "Tomography of a Solar Plage with the Tenerife Inversion Code." Astrophysical Journal 945, no. 2 (2023): 144. http://dx.doi.org/10.3847/1538-4357/acb76e.

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Abstract We apply the Tenerife Inversion Code (TIC) to the plage spectropolarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter (CLASP2). These unprecedented data consist of full Stokes profiles in the spectral region around the Mg ii h and k lines for a single slit position, with around two thirds of the 196″ slit crossing a plage region and the rest crossing an enhanced network. A previous analysis of these data had allowed us to infer the longitudinal component of the magnetic field by applying the weak-field approximation (WFA) to the circular polarization profiles

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22

Ma, Bill, and Feng Qi Yu. "A 1.2-V 1.76-Ppm/°C Low Voltage CMOS Band-Gap Reference." Applied Mechanics and Materials 303-306 (February 2013): 1798–802. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1798.

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This paper proposes an innovative CMOS band-gap reference (BGR) topology with a curvature-compensation by using MOS transistors operating in weak inversion region. The mechanism is analyzed thoroughly and the corresponding BGR circuit has been implemented in standard CMOS 0.18u technology. The proposed BGR achieves 1.76 ppm/°C in the range of -40°C to 120°C at 1.2V supply voltage. In addition, it consumes only 30uA current.

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23

Hansen, David Lundbek, Søren Bom Nielsen, and Derek J. Blundell. "A Model for the evolution of the Weald." Bulletin of the Geological Society of Denmark 49 (December 2, 2002): 109–18. http://dx.doi.org/10.37570/bgsd-2003-49-09.

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The Weald Basin developed through the Jurassic–Lower Cretaceous as an extensional basin founded upon E–W trending low-angle faults that were probably Variscan thrusts, subsequently reactivated as normal faults. Later, the basin was inverted and uplifted into a broad dome, whilst the London Basin to the north, and the Hampshire–Dieppe Basin to the south, subsided as flanking basins during the late Palaeocene–Eocene. Seismic sections across the Weald indicate that inversion resulted from north-directed stress. A stratigraphic reconstruction based on a N–S profile across the Weald and flanking ba

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Srivastava, Ajay, Christina Heise, Ankush Garg, and John B. Bell. "The relationship between the dominant Additional vein mutant in Drosophila melanogaster and engrailed." Genome 45, no. 6 (2002): 1077–82. http://dx.doi.org/10.1139/g02-078.

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Additional vein (Adv) is a dominant mutation that affects the first wing vein in Drosophila. It also manifests a recessive lethal phenotype and is associated with a large inversion. Using a combination of genetic and cytogenetic techniques, we show that Adv interacts with engrailed (en), likely because one of the inversion breakpoints interferes with en function. Genetic interaction studies reveal that Adv is lethal in trans with various lethal alleles of en and gives an engrailed-like wing phenotype with weak alleles of en. In situ hybridization to polytene chromosomes using en cDNA demonstra

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Correa, Vinícius Henrique Geraldo, Rodrigo Aparecido da Silva Braga, Dean Bicudo Karolak, and Fernanda Rodrigues Silva. "A Subthreshold Biased CMOS Ring Oscillator Model Design in 180-nm Process." Journal of ICT Research and Applications 17, no. 2 (2023): 135–50. http://dx.doi.org/10.5614/itbj.ict.res.appl.2023.17.2.1.

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In this paper, a 180-nm CMOS ring oscillator design, made with halo-implanted transistors and operating in the weak inversion region, is proposed, based on an undergraduate integrated circuit design course methodology for building logic gates and comparing simulated results with reviewed literature data. Halo-implanted channel transistors have a steeper and less distorted voltage characteristic curve compared to uniformly doped channel ones, which makes them a more appropriate option when designing asynchronous digital integrated circuits aimed at low bias and low power. Three gate models were

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Niederer, H. H. J. M. "Magnetoconductance of an n-type Si inversion layer in the transition region of weak to strong localization." Surface Science Letters 152-153 (April 1985): A167. http://dx.doi.org/10.1016/0167-2584(85)90206-3.

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Niederer, H. H. J. M. "Magnetoconductance of an n-type Si inversion layer in the transition region of weak to strong localization." Surface Science 152-153 (April 1985): 1167–77. http://dx.doi.org/10.1016/0039-6028(85)90535-7.

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Robustini, Carolina, Sara Esteban Pozuelo, Jorrit Leenaarts, and Jaime de la Cruz Rodríguez. "Chromospheric observations and magnetic configuration of a supergranular structure." Astronomy & Astrophysics 621 (December 19, 2018): A1. http://dx.doi.org/10.1051/0004-6361/201833246.

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Context.Unipolar magnetic regions are often associated with supergranular cells. The chromosphere above these regions is regulated by the magnetic field, but the field structure is poorly known. In unipolar regions, the fibrillar arrangement does not always coincide with magnetic field lines, and polarimetric observations are needed to establish the chromospheric magnetic topology.Aims.In an active region close to the limb, we observed a unipolar annular network of supergranular size. This supergranular structure harbours a radial distribution of the fibrils converging towards its centre. We a

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Yang, Hanzhao, and Lijuan Liu. "Why Could a Newborn Active Region Produce Coronal Mass Ejections?" Astrophysical Journal 973, no. 2 (2024): 164. http://dx.doi.org/10.3847/1538-4357/ad6900.

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Abstract Solar active regions (ARs) are the main sources of flares and coronal mass ejections (CMEs). NOAA AR 12089, which emerged on 2014 June 10, produced two C-class flares accompanied by CMEs within 5 hr after its emergence. When producing the two eruptive flares, the total unsigned magnetic flux (ΦAR) and magnetic free energy (E f ) of the AR are much smaller than the common CME-producing ARs. Why can this extremely small AR produce eruptive flares so early? We compare the AR magnetic environment for the eruptive flares to that for the largest confined flare from the AR. In addition to th

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Wang, Peng, Ru Kong, Xiaolu Kong, et al. "Inversion of a large-scale circuit model reveals a cortical hierarchy in the dynamic resting human brain." Science Advances 5, no. 1 (2019): eaat7854. http://dx.doi.org/10.1126/sciadv.aat7854.

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We considered a large-scale dynamical circuit model of human cerebral cortex with region-specific microscale properties. The model was inverted using a stochastic optimization approach, yielding markedly better fit to new, out-of-sample resting functional magnetic resonance imaging (fMRI) data. Without assuming the existence of a hierarchy, the estimated model parameters revealed a large-scale cortical gradient. At one end, sensorimotor regions had strong recurrent connections and excitatory subcortical inputs, consistent with localized processing of external stimuli. At the opposing end, defa

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Zhong, Shiyuan, Hee-Jin In, Xindi Bian, Joseph Charney, Warren Heilman, and Brian Potter. "Evaluation of Real-Time High-Resolution MM5 Predictions over the Great Lakes Region." Weather and Forecasting 20, no. 1 (2005): 63–81. http://dx.doi.org/10.1175/waf-834.1.

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Abstract Real-time high-resolution mesoscale predictions using the fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) over the Great Lakes region are evaluated for the 2002/03 winter and 2003 summer seasons using surface and upper-air observations, with a focus on near-surface and boundary layer properties that are important for applications such as air quality and fire weather predictions. The summer season predictions produce a cold bias in maximum daily temperature and a warm bias in minimum temperature that together lead to a good prediction of daily mean temperature

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Muñoz, Ricardo C., Rosa A. Zamora, and José A. Rutllant. "The Coastal Boundary Layer at the Eastern Margin of the Southeast Pacific (23.4°S, 70.4°W): Cloudiness-Conditioned Climatology." Journal of Climate 24, no. 4 (2011): 1013–33. http://dx.doi.org/10.1175/2010jcli3714.1.

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Abstract A basic climatological description of 29 years of surface and upper-air observations at a coastal site (23.4°S, 70.4°W) in northern Chile is presented. The site is considered to be generally representative of the eastern coastal margin of the southeast Pacific stratocumulus region, which plays an important role in the global radiative balance. The analysis focuses on two of the main elements affecting coastal weather in this region: low-level cloudiness and the state of the subsidence temperature inversion. The objectives of the paper are 1) to present the basic climatological feature

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Chen, Chih-Chieh, Gregory J. Hakim, and Dale R. Durran. "Transient Mountain Waves and Their Interaction with Large Scales." Journal of the Atmospheric Sciences 64, no. 7 (2007): 2378–400. http://dx.doi.org/10.1175/jas3972.1.

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Abstract The impact of transient mountain waves on a large-scale flow is examined through idealized numerical simulations of the passage of a time-evolving synoptic-scale jet over an isolated 3D mountain. Both the global momentum budget and the spatial flow response are examined to illustrate the impact of transient mountain waves on the large-scale flow. Additionally, aspects of the spatial response are quantified by potential vorticity inversion. Nearly linear cases exhibit a weak loss of domain-averaged absolute momentum despite the absence of wave breaking. This transient effect occurs bec

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Andrews, Timothy, and Mark J. Webb. "The Dependence of Global Cloud and Lapse Rate Feedbacks on the Spatial Structure of Tropical Pacific Warming." Journal of Climate 31, no. 2 (2018): 641–54. http://dx.doi.org/10.1175/jcli-d-17-0087.1.

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An atmospheric general circulation model (AGCM) is forced with patterns of observed sea surface temperature (SST) change and those output from atmosphere–ocean GCM (AOGCM) climate change simulations to demonstrate a strong dependence of climate feedback on the spatial structure of surface temperature change. Cloud and lapse rate feedbacks are found to vary the most, depending strongly on the pattern of tropical Pacific SST change. When warming is focused in the southeast tropical Pacific—a region of climatological subsidence and extensive marine low cloud cover—warming reduces the lower-tropos

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Guo, Juan, Huaning Wang, Jingxiu Wang, et al. "The Role of Magnetic Skeleton in Solar Flare Filaments Activity." Astrophysical Journal 975, no. 2 (2024): 221. http://dx.doi.org/10.3847/1538-4357/ad7a67.

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Abstract We report an M9.3 flare and filaments activities from NOAA Active Region 11261 that are strongly modulated by the 3D magnetic skeleton. Magnetic field extrapolation from the vector magnetic field suggests complex magnetic connectivity and the existence of a high coronal null point southeast of the active region. A small filament over the inversed V-shaped polarity inversion line erupted and resulted in the M9.3 flare associated with a weak ejection in the EUV hot channel and the formation of a relatively large filament. Both the weak ejection and the eruption of the large filament wer

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Chellaiah, S., and R. Viskanta. "Freezing of Water-Saturated Porous Media in the Presence of Natural Convection: Experiments and Analysis." Journal of Heat Transfer 111, no. 2 (1989): 425–32. http://dx.doi.org/10.1115/1.3250694.

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Freezing of superheated water-porous media (glass beads) contained in a rectangular test cell has been studied both experimentally and numerically. The effects of liquid superheat and imposed temperature difference were investigated. When the superheat across the liquid region was small the flow in the porous media was weak, and the interface was almost planar. For larger superheats, natural convection flow and the solidification front shape and velocity were found to depend on the imposed temperature and the permeability of the porous medium. Due to the density inversion of water, the rate of

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Starzhinskii, S. S., A. Yoshikawa, and S. Yu Khomutov. "Geoelectric Section of the Coastal Region of the Chukchi Sea near the Cape Schmidt Observatory." Russian Geology and Geophysics 63, no. 12 (2022): 1459–73. http://dx.doi.org/10.2113/rgg20214362.

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Abstract —This paper presents the results of 3D inversion of magnetovariational tippers obtained at the Cape Schmidt observatory via digital processing of geomagnetic variation records performed by the MAGDAS-I magnetometer. 3D tipper frequency inversion is carried out using the ModEM software. The result is horizontal and vertical sections in the coastal strip of the Chukchi Sea in a spatial region with a dimension of 300 × 300 × 200 km along the X, Y, and Z axes, respectively. The geoelectric section of the investigated region contains both surface and deep conductive blocks located at diffe

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Sinha, ArunKumar, and DanieleD Caviglia. "Designing high-value resistive network using weak inversion region of a PMOS device at the floating gate of a sensor." IETE Technical Review 30, no. 6 (2013): 473. http://dx.doi.org/10.4103/0256-4602.125665.

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Ferrente, F., F. Zuccarello, S. L. Guglielmino, S. Criscuoli, and P. Romano. "Photospheric and Chromospheric Magnetic Field Evolution during the X1.6 Flare in Active Region NOAA 12192." Astrophysical Journal 954, no. 2 (2023): 185. http://dx.doi.org/10.3847/1538-4357/ace9d1.

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Abstract We report on observations acquired by the Interferometric Bidimensional Spectropolarimeter (IBIS) during SOL2014-10-22T14:02, an X1.6 flare that occurred in active region NOAA 12192, taken in the Fe i 617.30 nm and Ca ii 854.2 nm line profiles. We analyze polarization signatures in the Stokes profiles of the two lines across one of the flare ribbons. Focusing our attention on the chromospheric signals and using the weak-field approximation (WFA), we study the temporal variation of the line-of-sight (LOS) magnetic field. We find variations of the magnetic field or the opacity along the

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Réchou, A., P. Durand, A. Druilhet, and B. Bénech. "Turbulence structure of the boundary layer below marine clouds in the SOFIA experiment." Annales Geophysicae 13, no. 10 (1995): 1075–86. http://dx.doi.org/10.1007/s00585-995-1075-y.

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Abstract. The SOFIA (Surface of the Ocean: Flux and Interaction with the Atmosphere) experiment, included in the ASTEX (Atlantic Stratocumulus Transition Experiment) field program, was conducted in June 1992 in the Azores region in order to investigate air-sea exchanges, as well as the structure of the atmospheric boundary layer and its capping low-level cloud cover. We present an analysis of the vertical structure of the marine atmospheric boundary layer (MABL), and especially of its turbulence characteristics, deduced from the aircraft missions performed during SOFIA. The meteorological situ

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Gomes, Helber Barros, Natalia Fedorova, and Vladimir Levit. "Rare events of stratus clouds on the northeast coast of Brazil." Revista Brasileira de Meteorologia 26, no. 1 (2011): 9–18. http://dx.doi.org/10.1590/s0102-77862011000100002.

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One event of three consecutive days and another of four consecutive days of Stratus clouds were registered at the Maceio airport on the northeast coast of Brazil. This is a very rare phenomenon for equatorial regions and it was analyzed using the high resolution (10km) ETA model, NCEP reanalysis, satellite data and conventional data supplied by the Hydrometeorological Directory DHM-SERHI/AL and by the Department of Flight Protection of the Zumbi dos Palmares airport. Wave disturbance in the trade winds and weak ascendant movements at low levels (1000 and 925hPa) were identified. At the same ti

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Zhou, Xiaoli, Pavlos Kollias, and Ernie R. Lewis. "Clouds, Precipitation, and Marine Boundary Layer Structure during the MAGIC Field Campaign." Journal of Climate 28, no. 6 (2015): 2420–42. http://dx.doi.org/10.1175/jcli-d-14-00320.1.

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Abstract The recent ship-based Marine ARM GCSS Pacific Cross-Section Intercomparison (GPCI) Investigation of Clouds (MAGIC) field campaign with the marine-capable Second ARM Mobile Facility (AMF2) deployed on the Horizon Lines cargo container M/V Spirit provided nearly 200 days of intraseasonal high-resolution observations of clouds, precipitation, and marine boundary layer (MBL) structure on multiple legs between Los Angeles, California, and Honolulu, Hawaii. During the deployment, MBL clouds exhibited a much higher frequency of occurrence than other cloud types and occurred more often in the

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Sik, Park Sung. "Analysis of an operational trans-conductance amplifier with positive feedback." Analysis of an operational trans-conductance amplifier with positive feedback 14, no. 4 (2024): 3820–29. https://doi.org/10.11591/ijece.v14i4.pp3820-3829.

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In this paper, we present an analysis of an operational trans-conductance amplifier (OTA) with two positive feedback. The direct current (DC) transfer function is obtained by analyzing the OTA using the drain current in the weak inversion region. The analysis results were verified through comparison with SPICE simulations, and the characteristics of the DC transfer function analysis for the OTA design are well matched with the simulation results. The designed OTA dissipates a low power of 41.4 nW, and features the slew rate is improved by 436% compared to a c

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Lanotte, Alessandra S., and Irene M. Mazzitelli. "Scalar Turbulence in Convective Boundary Layers by Changing the Entrainment Flux." Journal of the Atmospheric Sciences 70, no. 1 (2013): 248–65. http://dx.doi.org/10.1175/jas-d-11-0330.1.

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Abstract A large-eddy simulation model is adopted to investigate the evolution of scalars transported by atmospheric cloud-free convective boundary layer flows. Temperature fluctuations due to the ground release of sensible heat and concentration fluctuations of a trace gas emitted at the homogeneous surface are mixed by turbulence within the unstable boundary layer. On the top, the entrainment zone is varied to obtain two distinct situations: (i) the temperature inversion is strong and the trace gas increment across the entrainment region is small, yielding to a small top flux with respect to

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Fuller, Zachary L., Spencer A. Koury, Christopher J. Leonard, et al. "Extensive Recombination Suppression and Epistatic Selection Causes Chromosome-Wide Differentiation of a Selfish Sex Chromosome in Drosophila pseudoobscura." Genetics 216, no. 1 (2020): 205–26. http://dx.doi.org/10.1534/genetics.120.303460.

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Sex-Ratio (SR) chromosomes are selfish X-chromosomes that distort Mendelian segregation and are commonly associated with inversions. These chromosomal rearrangements suppress recombination with Standard (ST) X-chromosomes and are hypothesized to maintain multiple alleles important for distortion in a single large haplotype. Here, we conduct a multifaceted study of the multiply inverted Drosophila pseudoobscura SR chromosome to understand the evolutionary history, genetic architecture, and present-day dynamics that shape this enigmatic selfish chromosome. The D. pseudoobscura SR chromosome has

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Campbell, R. J., M. Mathioudakis, M. Collados, et al. "Temporal evolution of small-scale internetwork magnetic fields in the solar photosphere." Astronomy & Astrophysics 647 (March 2021): A182. http://dx.doi.org/10.1051/0004-6361/202040028.

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Context. While the longitudinal field that dominates in photospheric network regions has been studied extensively, small-scale transverse fields have recently been found to be ubiquitous in the quiet internetwork photosphere and this merits further study. Furthermore, few observations have been able to capture how this field evolves. Aims. We aim to statistically characterize the magnetic vector in a quiet Sun internetwork region and observe the temporal evolution of specific small-scale magnetic features. Methods. We present two high spatio-temporal resolution observations that reveal the dyn

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Zhou, Ying, Tianming Miao, Jian Yang, Xiuli Wang, Hongwei Wang, and Wenzhong Zheng. "Seismic Wave Attenuation Characteristics from the Ground Motion Spectral Analysis around the Kanto Basin." Buildings 12, no. 3 (2022): 318. http://dx.doi.org/10.3390/buildings12030318.

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In order to study the seismic wave attenuation characteristics of complex plate tectonics in and around the Kanto Basin, based on the focal mechanism and Slab1.0 model, the research area is divided into four regions. The one-step non-parametric generalized inversion technique was used to analyze the seismic wave attenuation characteristics of each region separately. The results show that the seismic path attenuation of earthquakes occurring in the shallow crust (Reg.1) is weak, and the seismic wave refraction at the crust–mantle boundary leads to almost no attenuation over a long hypocentral d

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Sakakibara, Kiyohiko, and Kazutami Arimoto. "An accurate method for predicting temperature-dependent current mismatch in weak inversion region of long and wide channel MOSFET without subthreshold hump." Japanese Journal of Applied Physics 53, no. 6 (2014): 064305. http://dx.doi.org/10.7567/jjap.53.064305.

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Yu, Chao, Tianliang Zhao, Yongqing Bai, et al. "Heavy air pollution with a unique “non-stagnant” atmospheric boundary layer in the Yangtze River middle basin aggravated by regional transport of PM<sub>2.5</sub> over China." Atmospheric Chemistry and Physics 20, no. 12 (2020): 7217–30. http://dx.doi.org/10.5194/acp-20-7217-2020.

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Abstract. The regional transport of air pollutants, controlled by emission sources and meteorological factors, results in a complex source–receptor relationship of air pollution change. Wuhan, a metropolis in the Yangtze River middle basin (YRMB) of central China, experienced heavy air pollution characterized by hourly PM2.5 concentrations reaching 471.1 µg m−3 in January 2016. To investigate the regional transport of PM2.5 over central eastern China (CEC) and the meteorological impact on wintertime air pollution in the YRMB area, observed meteorological and other relevant environmental data f

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Kaskouta, Elpida, Stavroula Kapoulea, Costas Psychalinos, and Ahmed S. Elwakil. "Implementation of a Fractional-Order Electronically Reconfigurable Lung Impedance Emulator of the Human Respiratory Tree." Journal of Low Power Electronics and Applications 10, no. 2 (2020): 18. http://dx.doi.org/10.3390/jlpea10020018.

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The fractional-order lung impedance model of the human respiratory tree is implemented in this paper, using Operational Transconductance Amplifiers. The employment of such active element offers electronic adjustment of the impedance characteristics in terms of both elements values and orders. As the MOS transistors in OTAs are biased in the weak inversion region, the power dissipation and the dc bias voltage of operation are also minimized. In addition, the partial fraction expansion tool has been utilized, in order to achieve reduction of the spread of the required time-constants and scaling

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