Log in

Relevant bibliographies by topics / Weak sign / Journal articles

To see the other types of publications on this topic, follow the link: Weak sign.

Journal articles on the topic 'Weak sign'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Weak sign.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Paindaveine, Davy, Julien Remy, and Thomas Verdebout. "Sign tests for weak principal directions." Bernoulli 26, no. 4 (2020): 2987–3016. http://dx.doi.org/10.3150/20-bej1213.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Dencker, Tobias, Pablo Klinkisch, Stefan M. Maul, and Björn Ommer. "Deep learning of cuneiform sign detection with weak supervision using transliteration alignment." PLOS ONE 15, no. 12 (2020): e0243039. http://dx.doi.org/10.1371/journal.pone.0243039.

Full text

Abstract:

The cuneiform script provides a glimpse into our ancient history. However, reading age-old clay tablets is time-consuming and requires years of training. To simplify this process, we propose a deep-learning based sign detector that locates and classifies cuneiform signs in images of clay tablets. Deep learning requires large amounts of training data in the form of bounding boxes around cuneiform signs, which are not readily available and costly to obtain in the case of cuneiform script. To tackle this problem, we make use of existing transliterations, a sign-by-sign representation of the table

APA, Harvard, Vancouver, ISO, and other styles

3

ARONOV, A. G., and A. B. RAPOROT. "HALL EFFECT IN SUPERCONDUCTORS ABOVE Tc." Modern Physics Letters B 06, no. 16n17 (1992): 1083–88. http://dx.doi.org/10.1142/s0217984992001939.

Full text

Abstract:

We consider the Aslamazov-Larkin term in the Hall conductivity near Tc, and find that the sign of this term is determined by ∂Tc/∂μ, where μ is Fermi level. We show that the AL term cannot explain the sign change of the Hall conductivity in high temperature superconductors. We also show that weak damping helicon waves exist in classical weak magnetic field due to the very strong increasing of AL term near Tc.

APA, Harvard, Vancouver, ISO, and other styles

4

Li, Qiong, and Hai Ning Zhang. "Protein Adsorption on Surface-Attached Weak Polyelectrolyte Layers." Advanced Materials Research 621 (December 2012): 93–96. http://dx.doi.org/10.4028/www.scientific.net/amr.621.93.

Full text

Abstract:

Fibrinogen adsorption onto surface-attached poly(methacrylic acid) monolayers and poly(methacrylic acid)/polyethyleneimine bilayers has been investigated. The adsorbed amount of fibrinogen was found to be dependant on the charge sign of the topmost layer because of electrostatic interactions.

APA, Harvard, Vancouver, ISO, and other styles

5

Huang, Rui, Shanming Ji, and Yansheng Ma. "Cauchy problem for the Lane-Emden heat flow with sign-changing initial data." Electronic Journal of Differential Equations 2024, no. 01-?? (2024): 66. http://dx.doi.org/10.58997/ejde.2024.66.

Full text

Abstract:

This article concerns the blow-up phenomenon of sign-changing solutions to the Lane-Emden heat flow. We construct sign-changing weak sub-solutions and localization of the positive and negative parts of the sign-changing solutions. We also extend the results to a nonlinear and finite diffusion equations. For more information see https://ejde.math.txstate.edu/Volumes/2024/66/abstr.html

APA, Harvard, Vancouver, ISO, and other styles

6

Sáfár, Anna, and Vadim Kimmelman. "Weak hand holds in two sign languages and two genres." Sign Language and Linguistics 18, no. 2 (2015): 205–37. http://dx.doi.org/10.1075/sll.18.2.02saf.

Full text

Abstract:

In this paper, we provide a quantitative analysis of weak hand holds based on corpus data. We include both a cross-linguistic analysis of these holds in narrative data from Russian Sign Language (RSL) and Sign Language of the Netherlands (NGT), and a language-internal, cross-genre analysis comparing NGT narrative and conversational data. We classified the functions of all holds found in two corpora of RSL and NGT, and analyzed their formal characteristics. We found that holds in RSL and NGT have similar functions. However, holds are significantly more frequent in RSL than in NGT. In addition,

APA, Harvard, Vancouver, ISO, and other styles

7

Zhang, Zhen, and Fang Liu. "Application of Wavelet Analysis Technique in the Life Sign Detection below Solid Material." Advanced Materials Research 534 (June 2012): 114–17. http://dx.doi.org/10.4028/www.scientific.net/amr.534.114.

Full text

Abstract:

In life sign detection below solid material， radar echo signal is very weak and hard to extract. For solve this problem, weak life signal de-noising based on wavelet transform is studied. Through the studies of wavelet threshold de-noising method, the use of it in weak life signal de-noising in strong noise background, and the verification of simulation by Matlab, the results shows that wavelet threshold de-noising method can remove the noise signal from weak life signal effectively and be an effective de-noising and extraction method for weak life signal.

APA, Harvard, Vancouver, ISO, and other styles

8

Zhang, Xinguang, Jingsong Chen, Peng Chen, Lishuang Li, and Yonghong Wu. "Nonlocal Changing-Sign Perturbation Tempered Fractional Sub-Diffusion Model with Weak Singularity." Fractal and Fractional 8, no. 6 (2024): 337. http://dx.doi.org/10.3390/fractalfract8060337.

Full text

Abstract:

In this paper, we study the existence of positive solutions for a changing-sign perturbation tempered fractional model with weak singularity which arises from the sub-diffusion study of anomalous diffusion in Brownian motion. By two-step substitution, we first transform the higher-order sub-diffusion model to a lower-order mixed integro-differential sub-diffusion model, and then introduce a power factor to the non-negative Green function such that the linear integral operator has a positive infimum. This innovative technique is introduced for the first time in the literature and it is critical

APA, Harvard, Vancouver, ISO, and other styles

9

Xu, Jiafa, Zhongli Wei, and Wei Dong. "Weak solutions for a fractionalp-Laplacian equation with sign-changing potential." Complex Variables and Elliptic Equations 61, no. 2 (2015): 284–96. http://dx.doi.org/10.1080/17476933.2015.1076808.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Dmitrienko, V. E., E. N. Ovchinnikova, J. Kokubun, and K. Ishida. "Dzyaloshinskii–Moriya interaction: How to measure its sign in weak ferromagnets?" JETP Letters 92, no. 6 (2010): 383–87. http://dx.doi.org/10.1134/s0021364010180050.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Guan, Donghai, Tingting Wang, Weiwei Yuan, et al. "SWNF: Sign Prediction of Weak Ties Based on the Network Features." IEEE Access 7 (2019): 102054–63. http://dx.doi.org/10.1109/access.2019.2928438.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Nikolaichik, V. I., and I. I. Khodos. "Determination of the Sign of a Dissociated Dislocation in Weak Beam." physica status solidi (a) 98, no. 1 (1986): K19—K21. http://dx.doi.org/10.1002/pssa.2210980142.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Guefaifia, Rafik, Salah Mahmoud Boulaaras, Sultan Alodhaibi, and Salem Alkhalaf. "Existence of Positive Weak Solutions for a New Class of p,q Laplacian Nonlinear Elliptic System with Sign-Changing Weights." Complexity 2020 (May 4, 2020): 1–6. http://dx.doi.org/10.1155/2020/5302513.

Full text

Abstract:

In this paper, by using subsuper solutions method, we study the existence of weak positive solutions for a new class of p,q Laplacian nonlinear elliptic system in bounded domains, when ax, bx,αx, and βx are sign-changing functions that maybe negative near the boundary, without assuming sign conditions on f0,g0,h0, and γ0.

APA, Harvard, Vancouver, ISO, and other styles

14

CHOBAN, E. A., and A. B. ONIPCHUK. "WRONG-SIGN MUONS IN NEUTRINO(ANTINEUTRINO)-NUCLEON COLLISIONS." International Journal of Modern Physics A 08, no. 06 (1993): 1059–80. http://dx.doi.org/10.1142/s0217751x93000412.

Full text

Abstract:

The contribution of the quasi-parton mechanism (a model of [Formula: see text] creation phenomenologically including nonperturbative effects) to the wrong-sign-muon production in the (anti)neutrino-nucleon scattering is calculated and compared with experimental data. The comparison shows that this contribution may be significant, and thus the wrong-sign-muon production could be used as the means of investigating the quasi-parton mechanism in the weak neutral-current interaction.

APA, Harvard, Vancouver, ISO, and other styles

15

Brown, Wendy W. "Geriatric Nephrology and Urology-1989." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 9, no. 1 (1989): 27–28. http://dx.doi.org/10.1177/089686088900900105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Vorkastner, Isabell. "Noise dependent synchronization of a degenerate SDE." Stochastics and Dynamics 18, no. 01 (2017): 1850007. http://dx.doi.org/10.1142/s0219493718500077.

Full text

Abstract:

We provide an example of an SDE with degenerate additive noise where synchronization depends on the strength of noise and the number of directions in which the noise acts. Here, synchronization means that the weak random attractor consists of a single random point. Indicated by a change of sign of the top Lyapunov exponent, we prove synchronization and no (weak) synchronization respectively.

APA, Harvard, Vancouver, ISO, and other styles

17

Nezhadshahbodaghi, M., M. R. Mosavi, and N. Rahemi. "Improved Semi-Bit Differential Acquisition Method for Navigation Bit Sign Transition and Code Doppler Compensation in Weak Signal Environment." Journal of Navigation 73, no. 4 (2020): 892–911. http://dx.doi.org/10.1017/s0373463320000028.

Full text

Abstract:

The presence of code Doppler and navigation bit sign transitions means that the acquisition of global positioning system (GPS) signals is difficult in weak signal environments where the output signal-to-noise ratio (SNR) is significantly reduced. Post-correlation techniques are typically utilised to solve these problems. Despite the advantages of these techniques, the post-correlation techniques suffer from problems caused by the code Doppler and the navigation bit sign transitions. We present an improved semi-bit differential acquisition method which can improve the code Doppler and the bit s

APA, Harvard, Vancouver, ISO, and other styles

18

Beutier, Guillaume, Steve Collins, Gareth Nisbet, Elena Ovchinnikova, and Vladimir Dmitrienko. "Mapping domains in the weak ferromagnet CoCO3." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1356. http://dx.doi.org/10.1107/s2053273314086434.

Full text

Abstract:

The Dzyaloshinskii-Moriya (DM) interaction [1,2] produces a perpendicular component in the coupling of neighbouring spins when the symmetry between the spins is low, or can drive a distortion of intervening atoms to create a spontaneous electric polarization in some magnetoelectrics. In weak ferromagnets, the canting of the atomic moments due to the DM interaction leads to a small parasitic ferromagnetic polarization in an otherwise antiferromagnetic structure. Recently, we determined the sign of the Dzyaloshinskii–Moriya interaction in the weak ferromagnet FeBO3 by measuring the interference

APA, Harvard, Vancouver, ISO, and other styles

19

Godoy, José, and Manuel Zamora. "Periodic solutions for a second-order differential equation with indefinite weak singularity." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 149, no. 5 (2019): 1135–52. http://dx.doi.org/10.1017/prm.2018.79.

Full text

Abstract:

AbstractAs a consequence of the main result of this paper efficient conditions guaranteeing the existence of a T −periodic solution to the second-order differential equation $${u}^{\prime \prime} = \displaystyle{{h(t)} \over {u^\lambda }}$$are established. Here, h ∈ L(ℝ/Tℤ) is a piecewise-constant sign-changing function and the non-linear term presents a weak singularity at 0 (i.e. λ ∈ (0, 1)).

APA, Harvard, Vancouver, ISO, and other styles

20

ZHU, B. Y. "ANOMALOUS HALL EFFECT IN WEAK PINNING HIGH-Tc SUPERCONDUCTORS." Modern Physics Letters B 10, no. 25 (1996): 1227–36. http://dx.doi.org/10.1142/s0217984996001395.

Full text

Abstract:

Taking into account both pinning and thermal fluctuation and employing the single flux flow model of Wang, Dong, and Ting (WDT), we have performed numerical study to investigate the flux motion in the weak pinning environment in the mixed-state of high-Tc superconductors. We find that there exist two kinds of weak pinning regime, one possesses low pinning concentration but strong individual pinning potentials, the other consists of high pinning concentration but weak individual pinning potentials for the double sign reversal of Hall resistivity ρxy. Moreover, our simulation and analysis sugges

APA, Harvard, Vancouver, ISO, and other styles

21

Ti, Ruixia, Xiaomei Lu, Ju He, et al. "Multiferroic properties and magnetoelectric coupling in Fe/Co co-doped Bi3.25La0.75Ti3O12 ceramics." Journal of Materials Chemistry C 3, no. 45 (2015): 11868–73. http://dx.doi.org/10.1039/c5tc02399h.

Full text

Abstract:

Good ferroelectricity, weak ferromagnetism and the sign of magnetoelectric coupling are obtained simultaneously in Bi<sub>3.25</sub>La<sub>0.75</sub>(Ti<sub>2.75</sub>Fe<sub>0.125</sub>Co<sub>0.125</sub>)O<sub>12</sub> ceramics.

APA, Harvard, Vancouver, ISO, and other styles

22

Sandyk, Reuven, and Lea C. Dann. "Resolution of Lhermitte's Sign in Multiple Sclerosis by Treatment with weak Electromagnetic Fields." International Journal of Neuroscience 81, no. 1-2 (1995): 215–24. http://dx.doi.org/10.3109/00207459509004888.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Wu, Falin, Yong Fu, Tahir Jan, and Yuan Liang. "Weak BeiDou signal acquisition in the presence of sign transition over multiple periods." International Journal of Satellite Communications and Networking 36, no. 6 (2018): 542–52. http://dx.doi.org/10.1002/sat.1257.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Fujiki, Michiya, Julian R. Koe, and Seiko Amazumi. "Questions of Mirror Symmetry at the Photoexcited and Ground States of Non-Rigid Luminophores Raised by Circularly Polarized Luminescence and Circular Dichroism Spectroscopy. Part 2: Perylenes, BODIPYs, Molecular Scintillators, Coumarins, Rhodamine B, and DCM." Symmetry 11, no. 3 (2019): 363. http://dx.doi.org/10.3390/sym11030363.

Full text

Abstract:

We investigated whether semi-rigid and non-rigid π-conjugated fluorophores in the photoexcited (S1) and ground (S0) states exhibited mirror symmetry by circularly polarized luminescence (CPL) and circular dichroism (CD) spectroscopy using a range of compounds dissolved in achiral liquids. The fluorophores tested were six perylenes, six scintillators, 11 coumarins, two pyrromethene difluoroborates (BODIPYs), rhodamine B (RhB), and 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM). All the fluorophores showed negative-sign CPL signals in the ultraviolet (UV)–visible region,

APA, Harvard, Vancouver, ISO, and other styles

25

Yang, Menghuan, Hong Wu, Qiqi Wang, Yingxin Zhao, and Zhiyang Liu. "A BeiDou Signal Acquisition Approach Using Variable Length Data Accumulation Based on Signal Delay and Multiplication." Sensors 20, no. 5 (2020): 1309. http://dx.doi.org/10.3390/s20051309.

Full text

Abstract:

The secondary modulation with the Neumann-Hoffman code increases the possibility of bit sign transition. Unlike other GNSS signals, there is no pilot component for synchronization in BeiDou B1/B3 signals, which increases the complexity in acquisition. A previous study has shown that the delay and multiplication (DAM) method is able to eliminate the bit sign transition problem, but it only applies to pretty strong signals. In this paper, a DAM-based BeiDou signal acquisition approach, called variable length data accumulation (VLDA), is proposed to acquire weak satellite signals. Firstly, the pe

APA, Harvard, Vancouver, ISO, and other styles

26

Hild, Patrick. "A sign preserving mixed finite element approximation for contact problems." International Journal of Applied Mathematics and Computer Science 21, no. 3 (2011): 487–98. http://dx.doi.org/10.2478/v10006-011-0037-7.

Full text

Abstract:

A sign preserving mixed finite element approximation for contact problemsThis paper is concerned with the frictionless unilateral contact problem (i.e., a Signorini problem with the elasticity operator). We consider a mixed finite element method in which the unknowns are the displacement field and the contact pressure. The particularity of the method is that it furnishes a normal displacement field and a contact pressure satisfying the sign conditions of the continuous problem. Thea priorierror analysis of the method is closely linked with the study of a specific positivity preserving operator

APA, Harvard, Vancouver, ISO, and other styles

27

Adrien, Emmanuelle, Helena P. Osana, Rebecca Watchorn Kong, Jeffrey Bisanz, and Jody Sherman LeVos. "An examination of third- and fourth-graders’ equivalence knowledge after classroom instruction." Journal of Numerical Cognition 7, no. 2 (2021): 104–24. http://dx.doi.org/10.5964/jnc.6913.

Full text

Abstract:

The present correlational study examined third- and fourth-graders’ (N = 56) knowledge of mathematical equivalence after classroom instruction on the equal sign. Three distinct learning trajectories of student equivalence knowledge were compared: those who did not learn from instruction (Never Solvers), those whose performance improved after instruction (Learners), and those who had strong performance before instruction and maintained it throughout the study (Solvers). Learners and Solvers performed similarly on measures of equivalence knowledge after instruction. Both groups demonstrated high

APA, Harvard, Vancouver, ISO, and other styles

28

Yan, Haibo, and Ls Yong. "On the Study of Global Solutions for a Nonlinear Equation." Abstract and Applied Analysis 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/808214.

Full text

Abstract:

The well-posedness of global strong solutions for a nonlinear partial differential equation including the Novikov equation is established provided that its initial valuev0(x)satisfies a sign condition andv0(x)∈Hs(R)withs>3/2. If the initial valuev0(x)∈Hs(R) (1≤s≤3/2)and the mean function of(1-∂x2)v0(x)satisfies the sign condition, it is proved that there exists at least one global weak solution to the equation in the spacev(t,x)∈L2([0,+∞),Hs(R))in the sense of distribution andvx∈L∞([0,+∞)×R).

APA, Harvard, Vancouver, ISO, and other styles

29

Ali, Z. I., and M. Sango. "Probabilistic weak solutions for nonlinear stochastic evolution problems involving pseudomonotone operators." Ukrains’kyi Matematychnyi Zhurnal 74, no. 7 (2022): 871–92. http://dx.doi.org/10.37863/umzh.v74i7.2286.

Full text

Abstract:

UDC 519.21 We study an important class of stochastic nonlinear evolution problems with pseudomonotone elliptic parts and establish the existence of probabilistic weak (or martingale) solutions. No solvability theory has been developed so far for these equations despite numerous works involving various generalizations of the monotonicity condition. Key to our work is a sign result for the Ito differential of an approximate solution that we establish, as well as several compactness results of the analytic and probabilistic nature, and a characterization of pseudomonotone operators due to F. E. B

APA, Harvard, Vancouver, ISO, and other styles

30

Widgren, Jonas. "Asylum Seekers in Europe in the Context of South-North Movements." International Migration Review 23, no. 3 (1989): 599–605. http://dx.doi.org/10.1177/019791838902300310.

Full text

Abstract:

This article will elucidate the threat towards the established system for asylum in Europe which originates from the increase of asylum seekers with very weak or no genuine claims at all. This increase might be the early sign of new intercontinental movements of migration.

APA, Harvard, Vancouver, ISO, and other styles

31

Abdou, M. H., M. Chrif, S. El Manouni, and H. Hjiaj. "On a class of nonlinear anisotropic parabolic problems." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 146, no. 1 (2015): 1–21. http://dx.doi.org/10.1017/s0308210515000402.

Full text

Abstract:

We prove the existence of weak solutions for the strongly nonlinear parabolic problem in the anisotropic Sobolev space , where the data f are assumed to be in the dual, and the nonlinear term g(x, t, s) has growth and sign conditions on s.

APA, Harvard, Vancouver, ISO, and other styles

32

M, Vaishnavi. "Indian Sign Language Recognition." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 05 (2025): 1–9. https://doi.org/10.55041/ijsrem47426.

Full text

Abstract:

Abstract - Indian Sign Language Recognition System provides a robust solution towards real-time sign language recognition, particularly for the deaf and hard-of-hearing. The system compared to traditional approaches relying more on vision-based features and less on contextual awareness utilizes deep generative models and transfer learning techniques to provide improved accuracy. The constructed approach enunciates the challenge of temporal boundary localizations among continuous gestures as weak supervised learning, where boundaries among continuous gestures are indeterminate. As a counter mea

APA, Harvard, Vancouver, ISO, and other styles

33

DE FÁTIMA SÁ CORREIA, MARIA, Orquídea Coelho, António Magalhães, and Andrea Benvenuto. "Learning/teaching philosophy in sign language as a cultural issue." Journal of Education Culture and Society 4, no. 1 (2020): 9–19. http://dx.doi.org/10.15503/jecs20131.9.19.

Full text

Abstract:

This paper is about the process of learning/teaching philosophy in a class of deaf stu-dents. It starts with a presentation of Portuguese Sign Language that, as with other sign lan-guages, is recognized as a language on equal terms with vocal languages. However, in spite of the recognition of that identity, sign languages have specifi city related to the quadrimodal way of their production, and iconicity is an exclusive quality. Next, it will be argued that according to linguistic relativism - even in its weak version - language is a mould of thought. The idea of Philosophy is then discussed a

APA, Harvard, Vancouver, ISO, and other styles

34

Putz, D., B. Moriggl, and E. Brenner. "Stemmer's (Kaposi-Stemmer-) sign – 30 years later." Phlebologie 36, no. 06 (2007): 320–24. http://dx.doi.org/10.1055/s-0037-1622203.

Full text

Abstract:

SummaryBackground: Since the first description 30 years ago the Kaposi-Stemmer-sign is used consistently in the diagnostics of lymphoedema. Since then the original definition was extended or changed several times by other authors. Additionally, the underlying morphology of this clinical sign was not investigated. Material, methods: The second toes of both a patient with lymphoedema (stage III; iL5VxF5) and a healthy subject were compared sonographically, macroscopically and microscopically. Results: In lymphoedema both cutis and subcutis of the second toe were thickened, the structure of the d

APA, Harvard, Vancouver, ISO, and other styles

35

Wang, Yongxin, He Jiang, Yutong Sun, and Longqi Xu. "A Static Sign Language Recognition Method Enhanced with Self-Attention Mechanisms." Sensors 24, no. 21 (2024): 6921. http://dx.doi.org/10.3390/s24216921.

Full text

Abstract:

For the current wearable devices in the application of cross-diversified user groups, it is common to face the technical difficulties of static sign language recognition accuracy attenuation, weak anti-noise ability, and insufficient system robustness due to the differences in the use of users. This paper proposes a novel static sign language recognition method enhanced by a self-attention mechanism. The key features of sign language gesture classification are highlighted by the weight function, and then the self-attention mechanism is combined to pay more attention to the key features, and th

APA, Harvard, Vancouver, ISO, and other styles

36

Cheng, Yan, Qing Chang, Hao Wang, and Xianxu Li. "A Two-Stage Kalman Filter-Based Carrier Tracking Loop for Weak GNSS Signals." Sensors 19, no. 6 (2019): 1369. http://dx.doi.org/10.3390/s19061369.

Full text

Abstract:

For global navigation satellite system receivers, Kalman filter (KF)-based tracking loops show remarkable advantages in terms of tracking sensitivity and robustness compared with conventional tracking loops. However, to improve the tracking sensitivity further, increasing the coherent integration time is necessary, but it is typically limited by the navigation data bit sign transition. Moreover, for standard KF-based tracking receivers, the KF parameters are initialized by the acquired results. However, especially under weak signal conditions, the acquired results have frequency errors that ar

APA, Harvard, Vancouver, ISO, and other styles

37

Huang, Zhaofei, Shian Qiu, Jun Li, Yibing Zhao, Pan Cui, and Ronghui Zhang. "Road Traffic Sign Identification in Weak Illumination for Intelligent Vehicle Based on Machine Vision." Recent Patents on Mechanical Engineering 11, no. 2 (2018): 127–34. http://dx.doi.org/10.2174/2212797611666180309162545.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Zhou, Qing-Mei, and Ke-Qi Wang. "Infinitely many weak solutions for p(x)-Laplacian-like problems with sign-changing potential." Electronic Journal of Qualitative Theory of Differential Equations, no. 10 (2020): 1–14. http://dx.doi.org/10.14232/ejqtde.2020.1.10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

DUAN, FABING, DEREK ABBOTT, and FRANÇOIS CHAPEAU-BLONDEAU. "EVALUATION OF THE SIGN DETECTOR FOR DCT DOMAIN WATERMARK DETECTION." Fluctuation and Noise Letters 10, no. 04 (2011): 337–58. http://dx.doi.org/10.1142/s0219477511000612.

Full text

Abstract:

Reordering by the rule of decreased absolute amplitudes, the discrete cosine transformation (DCT) coefficients of an image are approximately modeled as dichotomous noise. Based on this assumption, it is interesting to note that the classical multiplicative embedding method can be transformed into an additive embedding rule, which accords with the signal processing problem of detecting a known weak signal in additive non-Gaussian noise. Then, following the generalized Neyman-Pearson lemma, a locally optimum detector, named the sign detector, is introduced to distinguish the correct watermark fr

APA, Harvard, Vancouver, ISO, and other styles

40

Bao, Shudong. "The Current Helicity Parameter Hc is More Sensitive than αbest to Faraday Rotation". Highlights of Astronomy 13 (2005): 143. http://dx.doi.org/10.1017/s1539299600015434.

Full text

Abstract:

Observations have indicated that the net helicity sign of active regions is predominantly negative in the northern hemisphere and positive in the southern (see Table 1). From Table 1, we find that the hemispheric sign rule of helicity parameter αbest does not change with another solar cycle; but the helicity parameter Hc seems to show a weak opposite hemispheric preference for Huairou data in the solar cycle 23 and no preference for Mees data. How to explain such a phenomenon? We think one reason may be from the action of Faraday rotation. Faraday rotation will cause a counterclockwise rotatio

APA, Harvard, Vancouver, ISO, and other styles

41

Lebedeva, Daria Sergeevna. "Semiotic weakening of the strong character sign “sun” in the Chinese language." Philology. Issues of Theory and Practice 16, no. 10 (2023): 3280–86. http://dx.doi.org/10.30853/phil20230509.

Full text

Abstract:

The aim of the study is to identify the features of strong character signs from the perspective of the semiotic weakening law (using the Chinese character “sun” as an example). The Chinese character system is a heterogeneous system with different types of signs (strong, weakened and weak signs). To figure out the place and role of a strong sign in this system and to describe its basic features, the paper provides the description of different character categories in compliance with their stages of semiotic weakening. The analysis showed that pictograms and simple indicatives belong to the stron

APA, Harvard, Vancouver, ISO, and other styles

42

Fumagalli, Chiara, and Massimo Motta. "Exclusive Dealing and Entry, when Buyers Compete." American Economic Review 96, no. 3 (2006): 785–95. http://dx.doi.org/10.1257/aer.96.3.785.

Full text

Abstract:

Rasmusen et al. (1991) and Segal and Whinston (2000) show that an incumbent monopolist might prevent entry of a more efficient competitor by exploiting externalities among buyers. We show that their results hold only when downstream competition among buyers is weak. Under fierce downstream competition, if entry took place, a free buyer would become more competitive and increase its output and profits at the expense of buyers that sign an exclusive deal with the incumbent. Anticipating that orders from a single buyer would trigger entry, no buyer will sign the exclusive deal and entry will occu

APA, Harvard, Vancouver, ISO, and other styles

43

WANG, QIAN, and LI SHENG. "CURRENT INDUCED LOCAL SPIN POLARIZATION DUE TO THE SPIN-ORBIT COUPLING IN A TWO DIMENSIONAL NARROW STRIP." International Journal of Modern Physics B 19, no. 27 (2005): 4135–42. http://dx.doi.org/10.1142/s021797920503267x.

Full text

Abstract:

The current induced local spin polarization due to weak Rashba spin-orbit coupling in narrow strip is studied. In the presence of longitudinal charge current, local spin polarizations appear in the sample. The spin polarization perpendicular to the plane has opposite sign near the two edges. The in-plane spin polarization in the direction perpendicular to the sample edges also appears, but does not change sign across the sample. From our scaling analysis based on increasing the strip width, the out-of-plane spin polarization is important mainly in a system of mesoscopic size, and thus appears

APA, Harvard, Vancouver, ISO, and other styles

44

Dhillon, Ramandeep Singh, Cristobal Barrios, Cecilia Lau, et al. "Seatbelt Sign as an Indication for Four-vessel Computed Tomography Angiogram of the Neck to Diagnose Blunt Carotid Artery and Other Cervical Vascular Injuries." American Surgeon 79, no. 10 (2013): 1001–4. http://dx.doi.org/10.1177/000313481307901009.

Full text

Abstract:

Computed tomography angiography (CTA) of the neck has become the most common modality for diagnosing blunt carotid artery injury (BCAI). The protocol at our institution includes CTA on trauma patients with a seatbelt sign. The purpose of this study is to evaluate whether a solitary seatbelt sign is an indication for CTA of the neck to diagnose BCAI. We conducted a retrospective review of patients from 2000 to 2010 who received CTAs as a result of a seatbelt sign performed at our Level I trauma center. Four hundred eighteen patients received CTAs based on the presence of a seatbelt sign. Two hu

APA, Harvard, Vancouver, ISO, and other styles

45

Blanco, Pablo M., Claudio F. Narambuena, Sergio Madurga, Francesc Mas, and Josep L. Garcés. "Unusual Aspects of Charge Regulation in Flexible Weak Polyelectrolytes." Polymers 15, no. 12 (2023): 2680. http://dx.doi.org/10.3390/polym15122680.

Full text

Abstract:

This article reviews the state of the art of the studies on charge regulation (CR) effects in flexible weak polyelectrolytes (FWPE). The characteristic of FWPE is the strong coupling of ionization and conformational degrees of freedom. After introducing the necessary fundamental concepts, some unconventional aspects of the the physical chemistry of FWPE are discussed. These aspects are: (i) the extension of statistical mechanics techniques to include ionization equilibria and, in particular, the use of the recently proposed Site Binding-Rotational Isomeric State (SBRIS) model, which allows the

APA, Harvard, Vancouver, ISO, and other styles

46

Alagic, Gorjan, Tommaso Gagliardoni, and Christian Majenz. "Can you sign a quantum state?" Quantum 5 (December 16, 2021): 603. http://dx.doi.org/10.22331/q-2021-12-16-603.

Full text

Abstract:

Cryptography with quantum states exhibits a number of surprising and counterintuitive features. In a 2002 work, Barnum et al. argue that these features imply that digital signatures for quantum states are impossible (Barnum et al., FOCS 2002). In this work, we ask: can all forms of signing quantum data, even in a possibly weak sense, be completely ruled out? We give two results which shed significant light on this basic question.First, we prove an impossibility result for digital signatures for quantum data, which extends the result of Barnum et al. Specifically, we show that no nontrivial com

APA, Harvard, Vancouver, ISO, and other styles

47

Goel, Divya, Deepak Kumar, and K. Sreenadh. "Regularity and multiplicity results for fractional (p,q)-Laplacian equations." Communications in Contemporary Mathematics 22, no. 08 (2019): 1950065. http://dx.doi.org/10.1142/s0219199719500652.

Full text

Abstract:

This paper deals with the study of the following nonlinear doubly nonlocal equation: [Formula: see text] where [Formula: see text] is a bounded domain in [Formula: see text] with smooth boundary, [Formula: see text], with [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] are parameters. Here [Formula: see text] and [Formula: see text] are sign-changing functions. We prove [Formula: see text] estimates, weak Harnack inequality and Interior Hölder regularity of the weak solutions of the above problem in the subcritical case [Formula: see text] Also, by analyzi

APA, Harvard, Vancouver, ISO, and other styles

48

Hidayah, Linta Wafdan, and Alisa Qotrunada. "A SEMIOTIC ANALYSIS OF FEMINISM THEORIES IN THE MOVIE OF 7 HATI 7 CINTA 7 WANITA DIRECTED BY ROBBY ERTANTO." Teaching English as Foreign Language, Literature and Linguistics 1, no. 2 (2021): 1–17. http://dx.doi.org/10.33752/teflics.v1i2.2161.

Full text

Abstract:

The movie 7 Hati 7 Cinta 7 Wanita directed by Robby Ertanto that presents a representation of seven women in the Indonesian context through certain signs, concepts, thoughts, and language. This representation can be in the form of a depiction of physical or psychological violence, subordination, workload, power, or women's reproductive rights. The research method used Roland Barthes' semiotic analysis model and constructivist paradigm approach. Barthes' theory represents two ideological signs that he put forward, namely the denotative sign system or the connotative sign system: A denotative si

APA, Harvard, Vancouver, ISO, and other styles

49

Thoma, Henrik Friedrich, Vladimir Hutanu, Georg Roth, and Manuel Angst. "Absolute sign of the Dzyaloshinskii–Moriya interaction in weak ferromagnets disclosed by polarized neutron diffraction." Acta Crystallographica Section A Foundations and Advances 77, a2 (2021): C443. http://dx.doi.org/10.1107/s0108767321092436.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Han, Yuzhu, Chunling Cao, and Jiankang Li. "Multiplicity of weak solutions to a fourth-order elliptic equation with sign-changing weight function." Complex Variables and Elliptic Equations 65, no. 9 (2019): 1462–73. http://dx.doi.org/10.1080/17476933.2019.1662405.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!