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Articles de revues sur le sujet « Incomplete Survey »

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Auteur : Grafiati
Publié le 8 septembre 2023

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1

Miao, Xiaoye, Yunjun Gao, Su Guo et Wanqi Liu. « Incomplete data management : a survey ». Frontiers of Computer Science 12, no 1 (23 janvier 2017) : 4–25. http://dx.doi.org/10.1007/s11704-016-6195-x.

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Wang, Hai, et Shouhong Wang. « Mining incomplete survey data through classification ». Knowledge and Information Systems 24, no 2 (20 août 2009) : 221–33. http://dx.doi.org/10.1007/s10115-009-0245-8.

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Wang, Shouhong, et Hai Wang. « Conceptual construction on incomplete survey data ». Data & ; Knowledge Engineering 49, no 3 (juin 2004) : 311–23. http://dx.doi.org/10.1016/j.datak.2003.10.007.

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Bill, Marc, et Beat Hulliger. « Treatment of Multivariate Outliers in Incomplete Business Survey Data ». Austrian Journal of Statistics 45, no 1 (29 février 2016) : 3–23. http://dx.doi.org/10.17713/ajs.v45i1.86.

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The distribution of multivariate quantitative survey data usually is not normal. Skewed and semi-continuous distributions occur often. In addition, missing values and non-response is common. All together this mix of problems makes multivariate outlier detection difficult. Examples of surveys where these problems occur are most business surveys and some household surveys like the Survey for the Statistics of Income and Living Condition (SILC) of the European Union. Several methods for multivariate outlier detection are collected in the R-package modi. This paper gives an overview of modi and its functions for outlier detection and corresponding imputation. The use of the methods is explained with a business survey dataset. The discussion covers pre- and post-processing to deal with skewness and zero-inflation, advantages and disadvantages of the methods and the choice of the parameters.
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Suzuki, Jeff. « Modern Geometric Algebra : A (Very Incomplete!) Survey ». Mathematics Teacher 103, no 1 (août 2009) : 26–33. http://dx.doi.org/10.5951/mt.103.1.0026.

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Suzuki, Jeff. « Modern Geometric Algebra : A (Very Incomplete!) Survey ». Mathematics Teacher 103, no 1 (août 2009) : 26–33. http://dx.doi.org/10.5951/mt.103.1.0026.

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Löfgren, Karl-Gustaf, et Karl-Gustaf Lofgren. « Macroeconomic Model Building in Sweden : An Incomplete Survey ». Scandinavian Journal of Economics 93, no 2 (juin 1991) : 331. http://dx.doi.org/10.2307/3440339.

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Glimm, Birte, et Heiner Stuckenschmidt. « 15 Years of Semantic Web : An Incomplete Survey ». KI - Künstliche Intelligenz 30, no 2 (23 janvier 2016) : 117–30. http://dx.doi.org/10.1007/s13218-016-0424-1.

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Shen, Dong. « Iterative learning control with incomplete information : a survey ». IEEE/CAA Journal of Automatica Sinica 5, no 5 (septembre 2018) : 885–901. http://dx.doi.org/10.1109/jas.2018.7511123.

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Arslanturk, Suzan, Mohammad-Reza Siadat, Theophilus Ogunyemi, Kim Killinger et Ananias Diokno. « Analysis of incomplete and inconsistent clinical survey data ». Knowledge and Information Systems 46, no 3 (8 juillet 2015) : 731–50. http://dx.doi.org/10.1007/s10115-015-0850-7.

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Schneider, Thomas, et Mantas Šimkus. « Ontologies and Data Management : A Brief Survey ». KI - Künstliche Intelligenz 34, no 3 (13 août 2020) : 329–53. http://dx.doi.org/10.1007/s13218-020-00686-3.

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Abstract Information systems have to deal with an increasing amount of data that is heterogeneous, unstructured, or incomplete. In order to align and complete data, systems may rely on taxonomies and background knowledge that are provided in the form of an ontology. This survey gives an overview of research work on the use of ontologies for accessing incomplete and/or heterogeneous data.
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Wu, Xing, Shuai Mao, Luolin Xiong et Yang Tang. « A survey on temporal network dynamics with incomplete data ». Electronic Research Archive 30, no 10 (2022) : 3786–810. http://dx.doi.org/10.3934/era.2022193.

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<abstract><p>With the development of complex network theory, many phenomena on complex networks, such as infectious disease transmission, information spreading and transportation management, can be explained by temporal network dynamics, to reveal the evolution of the real world. Due to the failure of equipment for collecting data, human subjectivity, and false decisions made by machines when the high accuracy is required, data from temporal networks is usually incomplete, which makes the samples unrepresentative and the model analysis more challenging. This survey concentrates on the pre-processing strategies of incomplete data and overviews two categories of methods on data imputation and prediction, respectively. According to whether each layer in temporal networks has the coupling process, this survey overviews the dynamic modeling approaches in terms of both a single process and coupling processes on complex temporal networks. Moreover, for complex temporal networks with incomplete data, this survey summarizes various characteristic analysis methods, which concentrate on critical nodes identification, network reconstruction, network recoverity, and criticality. Finally, some future directions are discussed for temporal networks dynamics with incomplete data.</p></abstract>
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Claytor, Ross R., et Jacques Allard. « Properties of abundance indices obtained from acoustic data collected by inshore herring gillnet boats ». Canadian Journal of Fisheries and Aquatic Sciences 58, no 12 (1 décembre 2001) : 2502–12. http://dx.doi.org/10.1139/f01-189.

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Acoustic data collection during fishing activities can be used to obtain an abundance index. A simulation, calibrated against an experiment conducted during the Pictou, Nova Scotia, Canada, 1997 inshore herring fishery, is used to understand how survey design affects the properties of abundance indices derived from these data. Two fishing survey protocols and random and systematic transect surveys were simulated. During the complete fishing survey protocol, the simulated survey boat collected acoustic data before and after a management-imposed nightly boat limit was caught. In contrast, during the incomplete fishing survey protocol, data collection was terminated when the boat limit was caught. Properties of abundance indices derived from the fishing and transect surveys were examined over five levels of fish dispersion, two conditions of fish mobility, and in the presence and absence of concurrent fleet fishing. All indices were subject to change caused by changing fish dispersion, but only the incomplete fishing survey index was highly unsatisfactory. The complete fishing survey index is more susceptible to change than the transect indices but displays a lower sampling variation across conditions than the transect indices. We conclude that the complete fishing survey index is a viable alternative to the transect indices.
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Dr. V. Anuratha, M. Pushpalatha,. « A Survey : Rough Set Theory in Incomplete Information Systems ». International Journal of Innovative Research in Computer and Communication Engineering 3, no 8 (30 août 2015) : 7183–86. http://dx.doi.org/10.15680/ijircce.2015.0308007.

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Jou, Yow-Jen, Hsun-Jung Cho, Pei-Wei Lin et Chih-Yin Wang. « Incomplete Information Analysis for the Origin-Destination Survey Table ». Journal of Urban Planning and Development 132, no 4 (décembre 2006) : 193–200. http://dx.doi.org/10.1061/(asce)0733-9488(2006)132:4(193).

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Kreps, V. L. « Bidding Models and Repeated Games with Incomplete Information : A Survey ». Automation and Remote Control 80, no 2 (février 2019) : 362–79. http://dx.doi.org/10.1134/s0005117919020139.

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Moore, Charity G., Stuart R. Lipsitz, Cheryl L. Addy, James R. Hussey, Garrett Fitzmaurice et Sundar Natarajan. « Logistic Regression With Incomplete Covariate Data in Complex Survey Sampling ». Epidemiology 20, no 3 (mai 2009) : 382–90. http://dx.doi.org/10.1097/ede.0b013e318196cd65.

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Aste, Marco, Massimo Boninsegna, Antonino Freno et Edmondo Trentin. « Techniques for dealing with incomplete data : a tutorial and survey ». Pattern Analysis and Applications 18, no 1 (21 septembre 2014) : 1–29. http://dx.doi.org/10.1007/s10044-014-0411-9.

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Wang, Shouhong. « Classification with incomplete survey data : a Hopfield neural network approach ». Computers & ; Operations Research 32, no 10 (octobre 2005) : 2583–94. http://dx.doi.org/10.1016/j.cor.2004.03.018.

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Rendall, Michael S., Bonnie Ghosh-Dastidar, Margaret M. Weden, Elizabeth H. Baker et Zafar Nazarov. « Multiple Imputation for Combined-survey Estimation With Incomplete Regressors in One but Not Both Surveys ». Sociological Methods & ; Research 42, no 4 (16 octobre 2013) : 483–530. http://dx.doi.org/10.1177/0049124113502947.

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Brown, Gerald, et Siovache Kahkeshan. « Estimating a mode choice model with incomplete data ». Canadian Journal of Civil Engineering 16, no 6 (1 décembre 1989) : 917–23. http://dx.doi.org/10.1139/l89-135.

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This study develops and uses a synthetic data base to calibrate a logit mode choice model of work trips in metropolitan Vancouver. Missing survey data entries for perceived measures of travel time and waiting time by bus, as well as operating and parking cost by car, are calculated using statistical methods to increase the survey sample of 275 complete cases to 621 usable cases. The synthesized data set is used to specify random utility functions for two planning assumptions. The short-term policy specification using only level of service variables does not produce a usable model, but the specification based on a long-term planning assumption using a combination of level of service and socioeconomic variables produces plausible results. The inconclusive results from the policy model could be due to survey data problems, data simulation, and (or) the lack of conceptual validity of perceived measures of transportation attributes. The planning model provides insight into mode split prediction and transportation management for cities that are undergoing dynamic demographic and social changes. Key words: mode choice, incomplete data, socioeconomic factors, logit model.
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VOLIĆ, ISMAR. « A SURVEY OF BOTT–TAUBES INTEGRATION ». Journal of Knot Theory and Its Ramifications 16, no 01 (janvier 2007) : 1–42. http://dx.doi.org/10.1142/s0218216507005178.

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It is well-known that certain combinations of configuration space integrals defined by Bott and Taubes [11] produce cohomology classes of spaces of knots. The literature surrounding this important fact, however, is somewhat incomplete and lacking in detail. The aim of this paper is to fill in the gaps as well as summarize the importance of these integrals.
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Singh, Neelam Kumar. « Frame error in sample survey ». INTERNATIONAL RESEARCH JOURNAL OF AGRICULTURAL ECONOMICS AND STATISTICS 11, no 2 (15 septembre 2020) : 318–22. http://dx.doi.org/10.15740/has/irjaes/11.2/318-322.

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Quite often sampling frames are incomplete and imperfect. The sampling results based on imperfect frame will lead to sampling and non-sampling error along with third error called frame error which is rarely discussed. This occurs because estimate based on sampling population will not conform to the target population because of imperfection of frame and dynamic nature of frame. It is emphasized that that attention should be drawn to the frame error.
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Burton, Nicola W., Gavin Turrell et Brian Oldenburg. « Item Nonresponse in a Population-Based Mail Survey of Physical Activity ». Journal of Physical Activity and Health 1, no 4 (octobre 2004) : 344–62. http://dx.doi.org/10.1123/jpah.1.4.344.

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Background.This study assessed item nonresponse (INR) in a population-based mail survey of physical activity (PA).Methods.A questionnaire was mailed to a random sample, with a 57% response rate (n = 2532). The magnitude and type of PA INR and the association with sociodemographic variables was examined using logistic regression.Results.Among survey respondents, 28% had incomplete PA data; 11% missed 1 item, 11% missed 2 items, and 5% missed all 3 items. Respondents missing 3 items tended to be female, less educated, low income, in poor health, and current smokers. The walking item was missed by 8% of respondents, and 18% and 23% missed the vigorous-intensity and moderate-intensity PA items respectively. These groups were sociodemograpically different from those without INR. Incomplete PA data was also associated with sociodemographic INR.Conclusions.Mail surveys may underrepresent individuals insufficiently active for health, in particular those of low socioeconomic position.
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Shen, Bo, Zidong Wang, Jinling Liang et Yurong Liu. « Recent Advances on Filtering and Control for Nonlinear Stochastic Complex Systems with Incomplete Information : A Survey ». Mathematical Problems in Engineering 2012 (2012) : 1–16. http://dx.doi.org/10.1155/2012/530759.

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Some recent advances on the filtering and control problems for nonlinear stochastic complex systems with incomplete information are surveyed. The incomplete information under consideration mainly includes missing measurements, randomly varying sensor delays, signal quantization, sensor saturations, and signal sampling. With such incomplete information, the developments on various filtering and control issues are reviewed in great detail. In particular, the addressed nonlinear stochastic complex systems are so comprehensive that they include conventional nonlinear stochastic systems, different kinds of complex networks, and a large class of sensor networks. The corresponding filtering and control technologies for such nonlinear stochastic complex systems are then discussed. Subsequently, some latest results on the filtering and control problems for the complex systems with incomplete information are given. Finally, conclusions are drawn and several possible future research directions are pointed out.
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Todorov, Valentin, Matthias Templ et Peter Filzmoser. « Detection of multivariate outliers in business survey data with incomplete information ». Advances in Data Analysis and Classification 5, no 1 (27 octobre 2010) : 37–56. http://dx.doi.org/10.1007/s11634-010-0075-2.

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Lumley, Thomas, Pamela A. Shaw et James Y. Dai. « Connections between Survey Calibration Estimators and Semiparametric Models for Incomplete Data ». International Statistical Review 79, no 2 (août 2011) : 200–220. http://dx.doi.org/10.1111/j.1751-5823.2011.00138.x.

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FORGES, FRANÇOISE, et ROBERTO SERRANO. « COOPERATIVE GAMES WITH INCOMPLETE INFORMATION : SOME OPEN PROBLEMS ». International Game Theory Review 15, no 02 (juin 2013) : 1340009. http://dx.doi.org/10.1142/s0219198913400094.

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This is a brief survey describing some of the recent progress and open problems in the area of cooperative games with incomplete information. We discuss exchange economies, cooperative Bayesian games with orthogonal coalitions, and issues of cooperation in noncooperative Bayesian games.
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Juodis, Arturas, et Simas Kucinskas. « Quantifying noise in survey expectations ». Quantitative Economics 14, no 2 (2023) : 609–50. http://dx.doi.org/10.3982/qe1633.

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Expectations affect economic decisions, and inaccurate expectations are costly. Expectations can be wrong due to either bias (systematic mistakes) or noise (unsystematic mistakes). We develop a framework for quantifying the level of noise in survey expectations. The method is based on the insight that theoretical models of expectation formation predict a factor structure for individual expectations. Using data from professional forecasters, we find that the magnitude of noise is large (10%–30% of forecast MSE) and comparable to bias. We illustrate how our estimates can be applied to calibrate models with incomplete information and bound the effects of measurement error.
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HERNÁNDEZ-ALVAREZ, MYRIAM, et JOSÉ M. GOMEZ. « Survey about citation context analysis : Tasks, techniques, and resources ». Natural Language Engineering 22, no 3 (5 novembre 2015) : 327–49. http://dx.doi.org/10.1017/s1351324915000388.

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AbstractBibliometric calculations currently used to assess the quality of researchers, articles, and scientific journals have serious structural problems; many authors have noted the weakness of citation counts, because they are purely quantitative and do not differentiate between high- and low-citing papers. If a paper’s reputation is simply evaluated according to the number of its citations, then incomplete, incorrect, or controversial articles may be promoted, regardless of their relevancy. Therefore, perverse incentives are generated for researchers who may publish many incorrect or incomplete papers to achieve high impact indexes. It is essential to improve the objective criteria for automatic article-quality assessments. However, to obtain these new criteria, it is necessary to advance the programmed detection of context, polarity, and function of bibliographic references.We present an overview of general concepts and review contributions to the solutions to problems related to these issues, with the purpose of identifying trends and suggesting possible future research directions.
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Kimble, H. « Squeezed states of light : an (incomplete) survey of experimental progress and prospects ». Physics Reports 219, no 3-6 (octobre 1992) : 227–34. http://dx.doi.org/10.1016/0370-1573(92)90139-q.

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Wilson, Duncan S., Margo A. Stoddard et Klaus J. Puettmann. « Monitoring amphibian populations with incomplete survey information using a Bayesian probabilistic model ». Ecological Modelling 214, no 2-4 (juin 2008) : 210–18. http://dx.doi.org/10.1016/j.ecolmodel.2008.02.003.

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Taam, Winson, et Guohua Pan. « The value of unranked items in the analysis of incomplete ranking survey ». Journal of Statistical Computation and Simulation 61, no 1-2 (septembre 1998) : 1–14. http://dx.doi.org/10.1080/00949659808811899.

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Russell, Michael L., et Jeffrey L. Probstfield. « Survey methods in clinical trials : The bias introduced by incomplete follow-up ». Controlled Clinical Trials 6, no 3 (septembre 1985) : 232. http://dx.doi.org/10.1016/0197-2456(85)90047-9.

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Sudo, Daisuke, Yoshiro Monobe, Mayumi Yashiro, Makiko Naka Mieno, Ritei Uehara, Keiji Tsuchiya, Tomoyoshi Sonobe et Yosikazu Nakamura. « Coronary artery lesions of incomplete Kawasaki disease : a nationwide survey in Japan ». European Journal of Pediatrics 171, no 4 (10 décembre 2011) : 651–56. http://dx.doi.org/10.1007/s00431-011-1630-3.

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Gabkika, Bray Madoue, Fankep Djomo Carine, Tchari Adoum et Tchoubou Brai Madoue. « Interest of manual vacuum aspiration in the management of incomplete abortion at the district hospital of n’djamena south, chad ». Bangladesh Journal of Medical Science 15, no 4 (18 décembre 2016) : 572–74. http://dx.doi.org/10.3329/bjms.v15i4.30716.

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Background: abortion is one of the main causes of maternal mortality and morbidity in Chad. Objective: The aim of this work was to evaluate the interest of manual vacuum aspiration (MVA) in the management of incomplete abortion.Methods: This was a prospective and descriptive survey for five months from March 5th 2014 to August 05th 2014 conducted at the district hospital of N’ Djamena South. All women admitted for incomplete abortion were included. Before including the patient in our investigation her consent should be gotten after some explanations on the necessity of the survey have been given. Data analysis has been done by EPI INFO 3.5.1.Results: we enumerated 154 incomplete abortions among 2327 pregnancies registered at the prenatal consultation service and emergency unit. That gave the prevalence of 06.6%. The majorities of our patients had spontaneous abortion (96.1%). The time allowed for management was ?12 hours (90.3%). No complication was observedConclusion: MVA is an effective and sure method to evacuate uterus when incomplete abortion is diagnosed.Bangladesh Journal of Medical Science Vol.15(4) 2016 p.572-574
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Davis, Todd M., et James E. McLean. « Simplifying Ranking Tasks in Survey Research : A Method and Example ». Psychological Reports 62, no 3 (juin 1988) : 987–92. http://dx.doi.org/10.2466/pr0.1988.62.3.987.

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In many situations in survey research ranking objects or choices is desired. Ranking often presents many difficulties for respondents so data are incomplete. This paper demonstrates that use of paired comparisons may overcome many such difficulties. The paper also describes the simple computations involved in its use.
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Barnes, A., GJE Hill et GR Wilson. « Correcting for Incomplete Sighting in Aerial Surveys of Kangaroos ». Wildlife Research 13, no 3 (1986) : 339. http://dx.doi.org/10.1071/wr9860339.

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Kangaroo density estimates derived from aerial survey depend on the method of deriving sightability correction factors developed by Caughley. The method depends on five assumptions, some concerned with the mathematical properties of a model for sightability probabilities and others with deriving correction factors from this model. All these assumptions can be criticized. In addition, evidence on the performance of the method does not suggest that it is accurate. Published density estimates are less precise than indicated, and may include biases due to factors not considered in the correction factors used, e.g. seasonal conditions, time of day, and species differences. At present, no satisfactory alternative method of correction exists but, because inaccuracies may be large, continued use of the method requires much greater caution than has previously been shown. This is particularly relevant where density estimates are used to determine management procedures.
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Desai, Shrinivas D., et Linganagouda Kulkarni. « Comprehensive Survey on Metal Artifact Reduction Methods in Computed Tomography Images ». International Journal of Rough Sets and Data Analysis 2, no 2 (juillet 2015) : 92–114. http://dx.doi.org/10.4018/ijrsda.2015070106.

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Over the past few years, medical imaging technology has significantly advanced. Today, medical imaging modalities have been designed with state-of-the-art technology to provide much better in-depth resolution, reduced artifacts, and improved contrast –to – noise ratio. However in many practical situations complete projection data is not acquired leading to incomplete data problem. When the data is incomplete, tomograms may blur, resolution degrades, noise increases and forms artifacts which is the most important factor in degrading the tomography image quality and eventually hinders diagnostic accuracy. Efficient strategies to address this problem and to improve the diagnostic acceptability of CT images are thus invaluable. This review work, presents comprehensive survey of techniques for minimization of streaking artifact due to metallic implant in CT images. Problematic issues and outlook for the future research are discussed too. The major goal of the paper is to provide a comprehensive reference source for the researchers involved in metal artifact reduction methods.
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Santos, Larissa, Kai Wang, Yangrui Hu, Wenjuan Fang et Wen Zhao. « Statistical imprints of CMBB-type polarization leakage in an incomplete sky survey analysis ». Journal of Cosmology and Astroparticle Physics 2017, no 01 (20 janvier 2017) : 043. http://dx.doi.org/10.1088/1475-7516/2017/01/043.

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Heid, F., B. Jage, T. Piepho et J. Jage. « Management of incomplete regional anaesthesia in Germany : results of a nation-wide survey ». Acta Anaesthesiologica Scandinavica 51, no 5 (mai 2007) : 595–600. http://dx.doi.org/10.1111/j.1399-6576.2007.01267.x.

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Radaelli, Franco, et Giorgio Minoli. « Factors Associated With Incomplete Colonoscopy : Further Information From a Large Prospective Italian Survey ». Gastroenterology 133, no 4 (octobre 2007) : 1390–91. http://dx.doi.org/10.1053/j.gastro.2007.08.030.

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Wood, S., John Owen, Sheri Jenkins et Lorie Harper. « The Utility of Repeat Midtrimester Anatomy Ultrasound for Anomaly Detection ». American Journal of Perinatology 35, no 14 (8 février 2018) : 1346–51. http://dx.doi.org/10.1055/s-0038-1626715.

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Introduction Although guidelines recommend repeat ultrasound in the setting of an incomplete fetal anatomic survey, the clinical utility of this practice has not been established. As such, we aimed to assess the yield of repeat ultrasound for anomaly detection following an incomplete survey. Materials and Methods This is a retrospective cohort study of all singletons who underwent a midtrimester anatomic ultrasound at University of Alabama at Birmingham (UAB) from 2006 to 2014. Patients with an incomplete ultrasound underwent repeat examinations until completion. The population was divided into cohorts FIRST, SECOND, and THIRD, corresponding to the ultrasound at which the exam was deemed complete. Each detected anomaly was tallied. The number of ultrasounds needed to detect an anomaly was then assessed per group. Results Of 15,768 ultrasounds performed on 13,740 patients, 11,828 exams were completed on first attempt; 1,796 patients required a second, while 116 patients required a third scan or more. We detected 324 anomalies; 93.8% in FIRST, 5.9% in SECOND, and 0.3% in THIRD. The number of scans needed to detect an anomaly was 39, 189, and 348 for FIRST, SECOND, and THIRD, respectively. Conclusion Over 90% of anomalies are detected on the initial fetal anatomic survey. The incremental diagnostic yield then decreases, requiring appreciably more repeat scans to detect one anomaly.
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Azzopardi, Marc, et Nicole Meyssonnier. « A New Survey for Hα-Emission-Line Stars in the Small Magellanic Cloud ». Symposium - International Astronomical Union 116 (1986) : 225–26. http://dx.doi.org/10.1017/s0074180900148910.

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A number of surveys for emission-line objects have been made in the Magellanic Clouds (see Westerlund, 1983). Hα-emission-line objects in the Small Magellanic Cloud (SMC) have been identified mainly by Henize (1956) and Lindsay (1961). Since this pioneering work took place, no other extensive survey for this kind of object - such as the one by Bohannan and Epps (1974) in the Large Cloud - has been carried out in the SMC. Consequently the detection of Hα-emission-line objects in the SMC is still rather incomplete.
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Thorén, Fredrik, Åse A. Johnsson, John Brandberg et Mikael Hellström. « CT colonography : implementation, indications, and technical performance – a follow-up national survey ». Acta Radiologica 60, no 3 (13 juin 2018) : 271–77. http://dx.doi.org/10.1177/0284185118780899.

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Background Computed tomography colonography (CTC) is an accepted complement or alternative to optical colonoscopy (OC) but its implementation is incompletely analyzed, and technical performance varies between centers. Purpose To evaluate implementation, indications, and technical performance of CTC in Sweden and to evaluate compliance to international guidelines. Material and Methods A structured, self-assessed questionnaire regarding implementation and technical performance of CTC was sent to all eligible radiology departments in Sweden. Eighty-six out of 89 departments replied. Comparisons were made with similar national surveys from 2004 and 2009. Results The number of centers performing CTC gradually increased from 23 in 2004 to 77 in 2016. In parallel, centers performing barium enema (BE) examinations have decreased from 89 in 2004 to 13 in 2016. Main reasons stated for still performing BE were lack of resources regarding CTC/OC. Main reasons for not performing CTC were lack of suitable software, lack of machine/reading time, and lack of experience. The majority of centers follow international CTC guidelines. An important exception is fecal tagging, which was implemented in only 63% of the centers. Incomplete OC remains a major indication for CTC, while preoperative CTC in colorectal cancer and follow-up after diverticulitis have emerged as new indications. Conclusion CTC today is well implemented in routine healthcare but still lacking in capacity. Indications have expanded over time, and most departments perform “state of the art” CTC, although fecal tagging is incompletely implemented.
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Bodt, Timotheus Adrianus. « Ethnolinguistic survey of westernmost Arunachal Pradesh ». Linguistics of the Tibeto-Burman Area 37, no 2 (1 décembre 2014) : 198–239. http://dx.doi.org/10.1075/ltba.37.2.03bod.

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The area between Bhutan in the west, Tibet in the north, the Kameng river in the east and Assam in the south is home to at least six distinct phyla of the Trans-Himalayan (Tibeto-Burman, Sino-Tibetan) language family. These phyla encompass a minimum of 11, but probably 15 or even more mutually unintelligible languages, all showing considerable internal dialect variation. Previous literature provided largely incomplete or incorrect accounts of these phyla. Based on recent field research, this article discusses in detail the several languages of four phyla whose speakers are included in the Monpa Scheduled Tribe, providing the most accurate speaker data, geographical distribution, internal variation and degree of endangerment. The article also provides some insights into the historical background of the area and the impact this has had on the distribution of the ethnolinguistic groups.
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Singh, Neelam Kumar. « Domain studies with imperfect frame in large population ». INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 17, no 2 (15 juin 2021) : 620–26. http://dx.doi.org/10.15740/has/ijas/17.2/620-626.

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Existence of the frame is pre-requisite for any sample survey or census of a large population. Frames are quite often imperfect due to dynamic nature of sampling units. Frames become incomplete by the time actual survey and enumeration starts which affects the statistical results desired for the target population. In present study imperfection in the frame of large population arising due to qualitative change of units from one class to other have been considered. We have considered incomplete frame assuming the nature of units following dynamic change from class one to other follow a probability distribution function. Suitable estimator for proportion of units belonging to a particular domain and unbiased estimate of target population for a class have been proposed along with its estimate of variance. The estimates are evolved so as to eliminate error caused due to deviation of sampled population from target population. The paper deals with interesting problem arising in survey sampling and is useful in practice.
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Rao, Supriya, Nicole Scattolini de Gier, L. Brett Caram, Joyce Frederick, Mary Moorefield et Christopher W. Woods. « Adherence to Self-Quarantine Recommendations during an Outbreak of Norovirus Infection ». Infection Control & ; Hospital Epidemiology 30, no 9 (septembre 2009) : 896–99. http://dx.doi.org/10.1086/598346.

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A large norovirus outbreak affecting hospital patients and staff occurred during the winter of 2007. We administered a survey to affected staff to evaluate adherence to social distancing recommendations. Of the 102 survey respondents, 74 (73%) completed self-quarantine. Staff adherence was similar regardless of job responsibility. Incomplete adherence to recommendations could potentially accelerate and prolong infectious disease outbreaks.
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Vicente, Paula, et Elizabeth Reis. « Coverage Error in Internet Surveys : Can Fixed Phones Fix It ? » International Journal of Market Research 54, no 3 (mai 2012) : 323–45. http://dx.doi.org/10.2501/ijmr-54-3-323-345.

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The internet is increasingly being used for cross-sectional surveys and online panels. Although internet accessibility is growing across developed and developing countries, it seems unlikely that the internet alone will ever provide complete coverage of the general population. Given the incomplete coverage and imbalanced penetration rate of the internet across segments of the population, it is pertinent both for survey companies and academics to assess the potential of mixing the internet with other survey modes as part of a strategy to assure validity of inferential samples when surveying general populations. The purpose of this research was to evaluate to what extent coverage error in internet surveys can be reduced by surveying the offline population via telephone. We use data from Eurobarometer collected in the EU27 member states to simulate first an internetbased survey and then a mixed-mode survey combining the internet with the telephone. Comparisons are made to identify differences in the socio-demographic characteristics of internet households and those of non-internet households with telephone. Coverage error is also estimated in each survey design. Findings reveal significant socio-demographic differences and although the coverage error is reduced in the mixed-mode survey design, it cannot be completely eliminated. Moreover, the outcomes are not homogeneous across countries.
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Leung, Denis H. Y., et Jing Qin. « Analysing survey data with incomplete responses by using a method based on empirical likelihood ». Journal of the Royal Statistical Society : Series C (Applied Statistics) 55, no 3 (mai 2006) : 379–96. http://dx.doi.org/10.1111/j.1467-9876.2006.00542.x.

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