To see the other types of publications on this topic, follow the link: Matched Sampling.

Journal articles on the topic 'Matched Sampling'

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 'Matched Sampling.'

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

Wade, Angie. "Matched Sampling for Causal Effects." Journal of the Royal Statistical Society: Series A (Statistics in Society) 171, no. 3 (2008): 760–61. http://dx.doi.org/10.1111/j.1467-985x.2008.00538_9.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lacaze, B. "Matched shapes for uniform sampling." Statistics & Probability Letters 70, no. 2 (2004): 127–35. http://dx.doi.org/10.1016/j.spl.2004.06.002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Williamson, John, Tor Tosteson, Susan Redline, Xiangyang Liu, and D. Dawson. "Familial Aggregation Studies with Matched Proband Sampling." Human Heredity 46, no. 2 (1996): 76–84. http://dx.doi.org/10.1159/000154330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lee, James, H. P. Lee, and Lynne Wilkens. "Comparing means based on generalized matched sampling." Psychiatry Research 54, no. 3 (1994): 305–6. http://dx.doi.org/10.1016/0165-1781(94)90024-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Danziger, Yochay. "Sampling-balanced imaging system utilizing whitening matched filter." Applied Optics 49, no. 17 (2010): 3330. http://dx.doi.org/10.1364/ao.49.003330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Clements, S. M., R. K. Cavin III, J. Kang, and W. Liu. "Very high speed continuous sampling using matched delays." Electronics Letters 30, no. 6 (1994): 463–65. http://dx.doi.org/10.1049/el:19940339.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Imbens, Guido W. "Matched Sampling for Causal Effects by Donald B. Rubin." International Statistical Review 75, no. 2 (2007): 257–58. http://dx.doi.org/10.1111/j.1751-5823.2007.00015_10.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Cheung, Yin Bun, Xiangmei Ma, K. F. Lam, Jialiang Li, and Paul Milligan. "Bias control in the analysis of case–control studies with incidence density sampling." International Journal of Epidemiology 48, no. 6 (2019): 1981–91. http://dx.doi.org/10.1093/ije/dyz116.

Full text
Abstract:
Abstract Background Previous simulation studies of the case–control study design using incidence density sampling, which required individual matching for time, showed biased estimates of association from conditional logistic regression (CLR) analysis; however, the reason for this is unknown. Separately, in the analysis of case–control studies using the exclusive sampling design, it has been shown that unconditional logistic regression (ULR) with adjustment for an individually matched binary factor can give unbiased estimates. The validity of this analytic approach in incidence density sampling
APA, Harvard, Vancouver, ISO, and other styles
9

Niraula, Surya Raj, and Frederick A. Connell. "Probability Sampling in Matched Case-Control Study in Drug Abuse." International Journal of Statistics in Medical Research 7, no. 1 (2018): 18–24. http://dx.doi.org/10.6000/1929-6029.2018.07.01.3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sakamoto, Takahide, Guo-Wei Lu, and Naokatsu Yamamoto. "Loop-Assisted Coherent Matched Detector for Parallel Time-Frequency Sampling." Journal of Lightwave Technology 35, no. 4 (2017): 807–14. http://dx.doi.org/10.1109/jlt.2016.2645224.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Keogh, R. H. "Inverse sampling of controls in a matched case–control study." Biostatistics 9, no. 1 (2007): 152–58. http://dx.doi.org/10.1093/biostatistics/kxm019.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Michalopoulou, Zoi‐Heleni. "A Gibbs sampling approach to matched‐field source localization and deconvolution." Journal of the Acoustical Society of America 108, no. 5 (2000): 2646. http://dx.doi.org/10.1121/1.4743862.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Borgan, Ornulf, and Espen F. Olsen. "The Efficiency of Simple and Counter-matched Nested Case-control Sampling." Scandinavian Journal of Statistics 26, no. 4 (1999): 493–509. http://dx.doi.org/10.1111/1467-9469.00164.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Lui, Kung-Jong. "Notes in Case-Control Studies with Matched Pairs under Inverse Sampling." Biometrical Journal 38, no. 6 (1996): 681–93. http://dx.doi.org/10.1002/bimj.4710380606.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Lu, Lu, and Meiguo Gao. "A Truncated Matched Filter Method for Interrupted Sampling Repeater Jamming Suppression Based on Jamming Reconstruction." Remote Sensing 14, no. 1 (2021): 97. http://dx.doi.org/10.3390/rs14010097.

Full text
Abstract:
Interrupted sampling repeater jamming (ISRJ) is becoming more widely used in electronic countermeasures (ECM), thanks to the development of digital radio frequency memory (DRFM). Radar electronic counter-countermeasure (ECCM) is much more difficult when the jamming signal is coherent with the emitted signal. Due to the intermittent transmission feature of ISRJ, the energy accumulation of jamming on the matched filter shows a ‘ladder’ characteristic, whereas the real target signal is continuous. As a consequence, the time delay and distribution of the jamming slice can be obtained based on sear
APA, Harvard, Vancouver, ISO, and other styles
16

Bopardikar, A. S., R. M. Rao, and B. S. Adiga. "Matched sampling systems, relation to wavelets and implementation using PRCC filter banks." IEEE Transactions on Signal Processing 48, no. 8 (2000): 2269–78. http://dx.doi.org/10.1109/78.852008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Sun, Jing. "The sensitivity of matched sampling methodology in the literature of foreign acquisition." Applied Economics Letters 19, no. 16 (2012): 1567–70. http://dx.doi.org/10.1080/13504851.2011.639728.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Mohamed, Linah, Mike Christie, and Vasily Demyanov. "Comparison of Stochastic Sampling Algorithms for Uncertainty Quantification." SPE Journal 15, no. 01 (2009): 31–38. http://dx.doi.org/10.2118/119139-pa.

Full text
Abstract:
Summary History matching and uncertainty quantification are two important research topics in reservoir simulation currently. In the Bayesian approach, we start with prior information about a reservoir (e.g., from analog outcrop data) and update our reservoir models with observations (e.g., from production data or time-lapse seismic). The goal of this activity is often to generate multiple models that match the history and use the models to quantify uncertainties in predictions of reservoir performance. A critical aspect of generating multiple history-matched models is the sampling algorithm us
APA, Harvard, Vancouver, ISO, and other styles
19

Likar, Ivana Paljk, Ksenija Slavec Jere, Teja Možina, Ivan Verdenik, and Nataša Tul. "Pregnancy loss after amniocentesis and chorionic villus sampling: Cohort study." Slovenian Journal of Public Health 60, no. 1 (2020): 25–29. http://dx.doi.org/10.2478/sjph-2021-0005.

Full text
Abstract:
Abstract Introduction Introduction: To estimate the procedure-related risks of pregnancy loss following chorionic villus sampling (CVS) and amniocentesis (AC) compared to pregnancies without procedure. Methods This cohort study enrolled all women who underwent CVS or AC at the Department of Perinatology, University Medical Centre, Ljubljana, Slovenia (from January 2013 to June 2015). For each group we obtained a maternal age and gestational age (11–14 weeks for CVS and >15 weeks for AC) for a matched control group without invasive procedures from the national database. The data was obtained
APA, Harvard, Vancouver, ISO, and other styles
20

Deltas, George, and Eleftherios Zacharias. "Sampling Frequency and the Comparison Between Matched-Model and Hedonic Regression Price Indexes." Journal of Business & Economic Statistics 22, no. 1 (2004): 94–106. http://dx.doi.org/10.1198/073500103288619421.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Zhou, Qian, Weilin Xie, Zongyang Xia, Hongxiao Shi, Yi Dong, and Weisheng Hu. "Compensation of phase error in optical frequency-domain reflectometry using delay-matched sampling." Optical Engineering 53, no. 7 (2014): 074103. http://dx.doi.org/10.1117/1.oe.53.7.074103.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Suhara, T., H. Ishizuki, M. Fujimura, and H. Nishihara. "Waveguide quasi-phase-matched sum-frequency generation device for high-efficiency optical sampling." IEEE Photonics Technology Letters 11, no. 8 (1999): 1027–29. http://dx.doi.org/10.1109/68.775335.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Jin-Ku Kang, Wentai Liu, and R. K. Cavin. "A CMOS high-speed data recovery circuit using the matched delay sampling technique." IEEE Journal of Solid-State Circuits 32, no. 10 (1997): 1588–96. http://dx.doi.org/10.1109/4.634670.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Lui, Kung-Jong. "Notes on Interval Estimation of Odds Ratio in Matched Pairs under Stratified Sampling." Communications in Statistics - Simulation and Computation 45, no. 7 (2014): 2562–76. http://dx.doi.org/10.1080/03610918.2014.909934.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Lui, Kung-Jong. "Estimation of rate ratio and relative difference in matched-pairs under inverse sampling." Environmetrics 12, no. 6 (2001): 539–46. http://dx.doi.org/10.1002/env.479.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Ecker, Frank, Jennifer Francis, Per Olsson, and Katherine Schipper. "Non-random sampling and association tests on realized returns and risk proxies." Review of Accounting Studies 26, no. 2 (2021): 772–814. http://dx.doi.org/10.1007/s11142-021-09581-0.

Full text
Abstract:
AbstractThis paper investigates how data requirements often encountered in archival accounting research can produce a data-restricted sample that is a non-random selection of observations from the reference sample to which the researcher wishes to generalize results. We illustrate the effects of non-random sampling on results of association tests in a setting with data on one variable of interest for all observations and frequently-missing data on another variable of interest. We develop and validate a resampling approach that uses only observations from the data-restricted sample to construct
APA, Harvard, Vancouver, ISO, and other styles
27

Ralte, Zoramthanga, and Gitasree Das. "Ratio-to-regression estimator in successive sampling using one auxiliary variable." Statistics in Transition new series 16, no. 2 (2015): 183–202. http://dx.doi.org/10.59170/stattrans-2015-010.

Full text
Abstract:
The problem of estimation of finite population mean on the current occasion based on the samples selected over two occasions has been considered. In this paper, first a chain ratio-to-regression estimator was proposed to estimate the population mean on the current occasion in two-occasion successive (rotation) sampling using only the matched part and one auxiliary variable, which is available in both the occasions. The bias and mean square error of the proposed estimator is obtained. We proposed another estimator, which is a linear combination of the means of the matched and unmatched portion
APA, Harvard, Vancouver, ISO, and other styles
28

García luengo, A. V. "Ratio-cum-product estimation in presence of non-response in successive sampling." Journal of Applied Mathematics, Statistics and Informatics 12, no. 1 (2016): 55–83. http://dx.doi.org/10.1515/jamsi-2016-0005.

Full text
Abstract:
Abstract The problem of estimating the finite population mean on the samples selected over two occasions has been considered, when there is non-response (i) on both the occasions, (ii) only on the second occasion for both matched and unmatched portions of the sample, and (iii) only on the second occasion for unmatched portion of the sample. For the case when two auxiliary variables are positively and negatively correlated with the study variable, a double sampling ratio-cum-product estimate from the matched portion of the sample is presented. Expressions for optimum matching fraction and of th
APA, Harvard, Vancouver, ISO, and other styles
29

Dollaghan, Christine A., Thomas F. Campbell, and Russell Tomlin. "Video Narration as a Language Sampling Context." Journal of Speech and Hearing Disorders 55, no. 3 (1990): 582–90. http://dx.doi.org/10.1044/jshd.5503.582.

Full text
Abstract:
Video narration is a context for samping spontaneous expressive language in which the subject produces an on-line description of the events he or she observes on videotape. Video narration offers a means of reducing the variability among language samples from different speakers, or from the same speaker over time, because the number and complexity of events to be coded linguistically is known and constant. This increased consistency facilitates comparisons among samples, as well as enabling certain analyses requiring a transparent relationship between utterances and events. Advantages and limi
APA, Harvard, Vancouver, ISO, and other styles
30

Veenhof, Herman, Remco A. Koster, Lenneke A. T. Junier, Stefan P. Berger, Stephan J. L. Bakker, and Daan J. Touw. "Volumetric absorptive microsampling and dried blood spot microsampling vs. conventional venous sampling for tacrolimus trough concentration monitoring." Clinical Chemistry and Laboratory Medicine (CCLM) 58, no. 10 (2020): 1687–95. http://dx.doi.org/10.1515/cclm-2019-1260.

Full text
Abstract:
AbstractObjectivesMonitoring tacrolimus blood concentrations is important for preventing allograft rejection in transplant patients. Our hospital offers dried blood spot (DBS) sampling, giving patients the opportunity to sample a drop of blood from a fingerprick at home, which can be sent to the laboratory by mail. In this study, both a volumetric absorptive microsampling (VAMS) device and DBS sampling were compared to venous whole blood (WB) sampling.MethodsA total of 130 matched fingerprick VAMS, fingerprick DBS and venous WB samples were obtained from 107 different kidney transplant patient
APA, Harvard, Vancouver, ISO, and other styles
31

Zhang, Li-Chun. "Generalised Regression Estimation Given Imperfectly Matched Auxiliary Data." Journal of Official Statistics 37, no. 1 (2021): 239–55. http://dx.doi.org/10.2478/jos-2021-0010.

Full text
Abstract:
Abstract Generalised regression estimation allows one to make use of available auxiliary information in survey sampling. We develop three types of generalised regression estimator when the auxiliary data cannot be matched perfectly to the sample units, so that the standard estimator is inapplicable. The inference remains design-based. Consistency of the proposed estimators is either given by construction or else can be tested given the observed sample and links. Mean square errors can be estimated. A simulation study is used to explore the potentials of the proposed estimators.
APA, Harvard, Vancouver, ISO, and other styles
32

Rosenbaum, Paul R., and Donald B. Rubin. "Constructing a Control Group Using Multivariate Matched Sampling Methods That Incorporate the Propensity Score." American Statistician 39, no. 1 (1985): 33. http://dx.doi.org/10.2307/2683903.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Rosenbaum, Paul R., and Donald B. Rubin. "Constructing a Control Group Using Multivariate Matched Sampling Methods That Incorporate the Propensity Score." American Statistician 39, no. 1 (1985): 33–38. http://dx.doi.org/10.1080/00031305.1985.10479383.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Ishizuki, Hideki, Masatoshi Fujimura, Toshiaki Suhara, and Hiroshi Nishihara. "LiNbO3 waveguide quasi‐phase‐matched sum‐frequency generation device for high‐efficiency optical sampling." Electronics and Communications in Japan (Part II: Electronics) 84, no. 5 (2001): 29–36. http://dx.doi.org/10.1002/ecjb.1026.abs.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Cheung, Yin Bun, Xiangmei Ma, K. F. Lam, et al. "Statistical inference in matched case–control studies of recurrent events." International Journal of Epidemiology 49, no. 3 (2020): 996–1006. http://dx.doi.org/10.1093/ije/dyaa012.

Full text
Abstract:
Abstract Background The concurrent sampling design was developed for case–control studies of recurrent events. It involves matching for time. Standard conditional logistic-regression (CLR) analysis ignores the dependence among recurrent events. Existing methods for clustered observations for CLR do not fit the complex data structure arising from the concurrent sampling design. Methods We propose to break the matches, apply unconditional logistic regression with adjustment for time in quintiles and residual time within each quintile, and use a robust standard error for observations clustered wi
APA, Harvard, Vancouver, ISO, and other styles
36

Koolman, Leonard, Reenesh Prakash, Yohane Diness, et al. "Case-control investigation of invasive Salmonella disease in Malawi reveals no evidence of environmental or animal transmission of invasive strains, and supports human to human transmission." PLOS Neglected Tropical Diseases 16, no. 12 (2022): e0010982. http://dx.doi.org/10.1371/journal.pntd.0010982.

Full text
Abstract:
Background Invasive Salmonella infections cause significant morbidity and mortality in Sub-Saharan Africa. However, the routes of transmission are uncertain. We conducted a case-control study of index-case and geographically-matched control households in Blantyre, Malawi, sampling Salmonella isolates from index cases, healthy people, animals, and the household environment. Methodology Sixty index cases of human invasive Salmonella infection were recruited (March 2015-Oct 2016). Twenty-eight invasive Non-Typhoidal Salmonella (iNTS) disease and 32 typhoid patients consented to household sampling
APA, Harvard, Vancouver, ISO, and other styles
37

Arratia, Richard, and Stephen DeSalvo. "On the Random Sampling of Pairs, with Pedestrian Examples." Advances in Applied Probability 47, no. 1 (2015): 292–305. http://dx.doi.org/10.1239/aap/1427814592.

Full text
Abstract:
For a collection of objects such as socks, which can be matched according to a characteristic such as color, we study the innocent phrase ‘the distribution of the color of a matching pair’ by looking at two methods for selecting socks. One method is memoryless and effectively samples socks with replacement, while the other samples socks sequentially, with memory, until the same color has been seen twice. We prove that these two methods yield the same distribution on colors if and only if the initial distribution of colors is a uniform distribution. We conjecture a nontrivial maximum value for
APA, Harvard, Vancouver, ISO, and other styles
38

Arratia, Richard, and Stephen DeSalvo. "On the Random Sampling of Pairs, with Pedestrian Examples." Advances in Applied Probability 47, no. 01 (2015): 292–305. http://dx.doi.org/10.1017/s0001867800007813.

Full text
Abstract:
For a collection of objects such as socks, which can be matched according to a characteristic such as color, we study the innocent phrase ‘the distribution of the color of a matching pair’ by looking at two methods for selecting socks. One method is memoryless and effectively samples socks with replacement, while the other samples socks sequentially, with memory, until the same color has been seen twice. We prove that these two methods yield the same distribution on colors if and only if the initial distribution of colors is a uniform distribution. We conjecture a nontrivial maximum value for
APA, Harvard, Vancouver, ISO, and other styles
39

Delcoigne, Bénédicte, Niels Hagenbuch, Maria EC Schelin, et al. "Feasibility of reusing time-matched controls in an overlapping cohort." Statistical Methods in Medical Research 27, no. 6 (2016): 1818–29. http://dx.doi.org/10.1177/0962280216669744.

Full text
Abstract:
The methods developed for secondary analysis of nested case-control data have been illustrated only in simplified settings in a common cohort and have not found their way into biostatistical practice. This paper demonstrates the feasibility of reusing prior nested case-control data in a realistic setting where a new outcome is available in an overlapping cohort where no new controls were gathered and where all data have been anonymised. Using basic information about the background cohort and sampling criteria, the new cases and prior data are “aligned” to identify the common underlying study b
APA, Harvard, Vancouver, ISO, and other styles
40

Fujii, Yoshinori, and Zhong-Zhan Zhang. "MANTEL-HAENSZEL TYPE ESTIMATORS FOR THE COUNTER-MATCHED SAMPLING DESIGN IN NESTED CASE-CONTROL STUDY." Bulletin of informatics and cybernetics 33, no. 1/2 (2001): 43–52. http://dx.doi.org/10.5109/13502.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Samawi, Hani M., Mohammad F. Al-Saleh, and Obaid Al-Saidy. "The matched pair sign test using bivariate ranked set sampling for different ranking based schemes." Statistical Methodology 6, no. 4 (2009): 397–407. http://dx.doi.org/10.1016/j.stamet.2009.02.002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Kitaeva, G. Kh, S. P. Kovalev, I. I. Naumova, et al. "Quasi-phase-matched probe-energy electro-optic sampling as a method of narrowband terahertz detection." Applied Physics Letters 96, no. 7 (2010): 071106. http://dx.doi.org/10.1063/1.3309688.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Xie, Yuan Mang, Zhao Hua Pan, De Gan Zhang, and Hong Tao Peng. "A New Kind of Texture Synthesis Method Based on Best Match." Applied Mechanics and Materials 575 (June 2014): 585–88. http://dx.doi.org/10.4028/www.scientific.net/amm.575.585.

Full text
Abstract:
In order to improve above problems, this paper presents a new patch-based sampling algorithm for synthesizing textures from an input sample texture. We determine the size of block analyzing the effect of the best matched texture to synthesis result, and the result is satisfying. Moreover, the patch-based sampling algorithm remains effective when pixel-based non-parametric sampling algorithms fail to produce good results.
APA, Harvard, Vancouver, ISO, and other styles
44

Herrmann, R. B., and D. R. Russell. "Ground roll: Rejection using adaptive phase‐matched filters." GEOPHYSICS 55, no. 6 (1990): 776–81. http://dx.doi.org/10.1190/1.1442890.

Full text
Abstract:
The technique of phase‐matched filtering dispersive surface waves is extended to permit an adaptive, iterative process by which the signal itself in a seismic trace designs a filter to remove the surface wave. The technique is robust and well‐behaved and requires the specification of only simple parameters for its operation. The technique is applied to data sets from three regions, representing a wide range in the ratio of surface‐wave noise to exploration signal. The technique works very well with poor data sets and also improves good data sets. Since the technique is applied to individual tr
APA, Harvard, Vancouver, ISO, and other styles
45

Tomazin, Rok, Tjaša Cerar Kišek, Tea Janko, et al. "Comparison of Culture-Dependent and Culture-Independent Methods for Routine Identification of Airborne Microorganisms in Speleotherapeutic Caves." Microorganisms 12, no. 7 (2024): 1427. http://dx.doi.org/10.3390/microorganisms12071427.

Full text
Abstract:
The effective identification of bacterial and fungal isolates is essential for microbiological monitoring in environments like speleotherapeutic caves. This study compares MALDI-TOF MS and the OmniLog ID System, two high-throughput culture-based identification methods. MALDI-TOF MS identified 80.0% of bacterial isolates to the species level, while the OmniLog ID System identified 92.9%. However, species-level matches between the methods were only 48.8%, revealing considerable discrepancies. For discrepant results, MALDI-TOF MS matched molecular identification at the genus level in 90.5% of cas
APA, Harvard, Vancouver, ISO, and other styles
46

Aljannah, Nur Fajrin, and Francisca Romana Sri Supadmi. "Incompatible Results on Matched Cross Test Examination." Jaringan Laboratorium Medis 3, no. 2 (2021): 77–82. http://dx.doi.org/10.31983/jlm.v3i2.8027.

Full text
Abstract:
Compatibility testing before blood transfusion is very crucial. This procedure to prevent transfusion reactions due to blood group incompatibility or irregular antibodies. Cross-matching to ensure that the blood safe for the recipient. There are two results in the cross-matching, namely compatible and incompatible. This study aims to determine the inappropriate results of cross-matching at Blood Transfusion Service of the Indonesian Red Cross, Kulon Progo Regency. This study used a quantitative descriptive research design with a retrospective approach. The samples used in this study were 78 in
APA, Harvard, Vancouver, ISO, and other styles
47

Ishizuki, Hideki, Masatoshi Fujimura, Toshiaki Suhara, and Hiroshi Nishihara. "LiNbO3 waveguide quasi‐phase‐matched sum‐frequency generation device for high‐efficiency optical sampling." Electronics and Communications in Japan (Part II: Electronics) 84, no. 5 (2001): 29–36. http://dx.doi.org/10.1002/ecjb.1026.

Full text
Abstract:
AbstractA LiNbO3 waveguide quasi‐phase‐matched sum‐frequency generation (SFG) device is studied. From the design of the device and a study of the sampling characteristic, it is determined that picosecond optical sampling can be realized at high conversion efficiency. A device 5 mm long with a fan‐shaped polarization inversion grating is fabricated for optical sampling experiments. By using the sampling pulse light with a width of 25 ps obtained by gain‐switching operation of a laser diode, the waveform of the signal light at a wavelength of 1.5 μm is observed. Optical sampling at a normalized
APA, Harvard, Vancouver, ISO, and other styles
48

Güralp, Onur, Nevin Tüten, Koray Gök, et al. "Serum kallistatin level is decreased in women with preeclampsia." Journal of Perinatal Medicine 49, no. 1 (2021): 60–66. http://dx.doi.org/10.1515/jpm-2020-0142.

Full text
Abstract:
AbstractObjectivesTo evaluate the serum levels of the serine proteinase inhibitor kallistatin in women with preeclampsia (PE).MethodsThe clinical and laboratory parameters of 55 consecutive women with early-onset PE (EOPE) and 55 consecutive women with late-onset PE (LOPE) were compared with 110 consecutive gestational age (GA)-matched (±1 week) pregnant women with an uncomplicated pregnancy and an appropriate for gestational age fetus.ResultsMean serum kallistatin was significantly lower in women with PE compared to the GA-matched-controls (27.74±8.29 ng/mL vs. 37.86±20.64 ng/mL, p<0.001);
APA, Harvard, Vancouver, ISO, and other styles
49

Hu, Chunyuan, Yujie Lin, Jianguo Li, Xiangyuan Bu, and Jianping An. "Near-Nyquist-Limit Optical Communication and Ranging Method Based on Waveform Matched PPM." Electronics 11, no. 4 (2022): 565. http://dx.doi.org/10.3390/electronics11040565.

Full text
Abstract:
Deep-space optical communication and ranging technologies have attracted much attention for satellite-to-earth and moon-to-earth exploration. In integrated communication and ranging scenarios, non-integer oversampling factors are employed to improve the ranging performance, which can cause accumulated timing errors. We propose a novel pulse position modulation (PPM) symbol decision method based on waveform matching to reduce the impact of accumulated timing errors near the Nyquist sampling limit. Simulation results demonstrate that the ranging accuracy can reach 2.6 and 0.52 mm at sampling rat
APA, Harvard, Vancouver, ISO, and other styles
50

Rosenbaum, Paul R., Richard N. Ross, and Jeffrey H. Silber. "Minimum Distance Matched Sampling With Fine Balance in an Observational Study of Treatment for Ovarian Cancer." Journal of the American Statistical Association 102, no. 477 (2007): 75–83. http://dx.doi.org/10.1198/016214506000001059.

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!