Статті в журналах: "Repeated problems"

1

Ye, Meng-Hua. "Repeated stochastic tree problems." Economics Letters 20, no. 2 (January 1986): 117–19. http://dx.doi.org/10.1016/0165-1765(86)90156-4.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Darling, April L., Leonid Breydo, Emma G. Rivas, Niad T. Gebru, Dali Zheng, Jeremy D. Baker, Laura J. Blair, Chad A. Dickey, John Koren, and Vladimir N. Uversky. "Repeated repeat problems: Combinatorial effect of C9orf72-derived dipeptide repeat proteins." International Journal of Biological Macromolecules 127 (April 2019): 136–45. http://dx.doi.org/10.1016/j.ijbiomac.2019.01.035.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Street, Deborah J. "Combinatorial problems in repeated measurements designs." Discrete Mathematics 77, no. 1-3 (September 1989): 323–43. http://dx.doi.org/10.1016/0012-365x(89)90371-3.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Hirao, Yukiko. "Learning and Incentive Problems in Repeated Partnerships." International Economic Review 34, no. 1 (February 1993): 101. http://dx.doi.org/10.2307/2526952.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Lin, Xihong, and Raymond J. Carroll. "Semiparametric estimation in general repeated measures problems." Journal of the Royal Statistical Society: Series B (Statistical Methodology) 68, no. 1 (February 2006): 69–88. http://dx.doi.org/10.1111/j.1467-9868.2005.00533.x.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Sakinofsky, Isaac, Robin S. Roberts, and Patricia James. "Why Parasuicides Repeat Despite Problem Resolution." British Journal of Psychiatry 156, no. 3 (March 1990): 399–405. http://dx.doi.org/10.1192/bjp.156.3.399.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

To discover why parasuicides who resolved their difficulties repeated self-harm within three-month follow-up at the same rate as those who had not resolved problems, a group of 30 repeaters was compared with 156 non-repeaters. The repeaters had a history of more frequent episodes, beginning younger. Their problems were more severe, the acts of self-harm potentially less lethal. They experienced greater feelings of externally directed hostility, powerlessness, and ‘normlessness'. A constellation of nine variables correctly predicted 81.5% of the repeaters and 77.5% of the non-repeaters. At follow-up the non-repeaters had improved on several parameters but the repeaters were essentially unchanged. The resolvers among the subgroup of repeaters were more like repeaters in the overall sample than the resolvers, which may explain why some parasuicides repeat in spite of resolving their problems.

7

Eifert, Georg H., and Kevin Duggan. "Problems with repeated exposures to behavior test situations." Journal of Behavior Therapy and Experimental Psychiatry 16, no. 2 (June 1985): 185–86. http://dx.doi.org/10.1016/0005-7916(85)90056-4.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Pach, János, and Micha Sharir. "Repeated angles in the plane and related problems." Journal of Combinatorial Theory, Series A 59, no. 1 (January 1992): 12–22. http://dx.doi.org/10.1016/0097-3165(92)90094-b.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

RIVALS, ERIC. "A SURVEY ON ALGORITHMIC ASPECTS OF TANDEM REPEATS EVOLUTION." International Journal of Foundations of Computer Science 15, no. 02 (April 2004): 225–57. http://dx.doi.org/10.1142/s012905410400239x.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Local repetitions in genomes are called tandem repeats. A tandem repeat contains multiple, but slightly different copies of a repeated unit. It changes over time as the copies are altered by mutations, when additional copies are created by amplification of an existing copy, or when a copy is removed by contraction. Theses changes let tandem repeats evolve dynamically. From this statement follow two problems. TANDEM REPEAT HISTORY aims at recovering the history of amplifications and mutations that produced the tandem repeat sequence given as input. Given the tandem repeat sequences at the same genomic location in two individuals and a cost function for amplifications, contractions, and mutations, the purpose of TANDEM REPEAT ALLELE ALIGNMENT is to find an alignment of the sequences having minimal cost. We present a survey of these two problems that allow to investigate evolutionary mechanisms at work in tandem repeats.

10

Hou, Gene J. W., and Scan P. Kenny. "Eigenvalue and eigenvector approximate analysis for repeated eigenvalue problems." AIAA Journal 30, no. 9 (September 1992): 2317–24. http://dx.doi.org/10.2514/3.11220.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Van Assche, C. "PROBLEMS OF REPEATED PESTICIDE APPLICATIONS CAUSING CUMULATIVE RESIDUE SITUATIONS." Acta Horticulturae, no. 220 (January 1988): 383–90. http://dx.doi.org/10.17660/actahortic.1988.220.53.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Sugawara, Osamu, Makoto Miyatsu, Izumi Yamashita, Yoshiharu Takemitsu, and Tosihiro Onozawa. "Problems with repeated arthroscopic surgery in the discoid meniscus." Arthroscopy: The Journal of Arthroscopic & Related Surgery 7, no. 1 (March 1991): 68–71. http://dx.doi.org/10.1016/0749-8063(91)90081-8.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Skrzypacz, Andrzej, and Juuso Toikka. "Mechanisms for Repeated Trade." American Economic Journal: Microeconomics 7, no. 4 (November 1, 2015): 252–93. http://dx.doi.org/10.1257/mic.20140173.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

How does feasibility of efficient repeated trade depend on the features of the environment such as persistence of values, private information about their evolution, or trading frequency? We derive a necessary and sufficient condition for efficient, unsubsidized, and voluntary trade, which implies that efficient contracting requires sufficient congruence of expectations. This translates to bounds on persistence of values and on private information about their evolution, and distinguishes increasing patience from more frequent interaction; the latter need not facilitate efficiency even when the former does. We also discuss second-best mechanisms and extend the characterization to general dynamic collective choice problems. (JEL C73, D82, D86)

14

McAULIFFE, CARMEL, PAUL CORCORAN, HELEN S. KEELEY, ELLA ARENSMAN, UNNI BILLE-BRAHE, DIEGO De LEO, SANDOR FEKETE, et al. "Problem-solving ability and repetition of deliberate self-harm: a multicentre study." Psychological Medicine 36, no. 1 (September 29, 2005): 45–55. http://dx.doi.org/10.1017/s0033291705005945.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Background. While recent studies have found problem-solving impairments in individuals who engage in deliberate self-harm (DSH), few studies have examined repeaters and non-repeaters separately. The aim of the present study was to investigate whether specific types of problem-solving are associated with repeated DSH.Method. As part of the WHO/EURO Multicentre Study on Suicidal Behaviour, 836 medically treated DSH patients (59% repeaters) from 12 European regions were interviewed using the European Parasuicide Study Interview Schedule (EPSIS II) approximately 1 year after their index episode. The Utrecht Coping List (UCL) assessed habitual responses to problems.Results. Factor analysis identified five dimensions – Active Handling, Passive-Avoidance, Problem Sharing, Palliative Reactions and Negative Expression. Passive-Avoidance – characterized by a pre-occupation with problems, feeling unable to do anything, worrying about the past and taking a gloomy view of the situation, a greater likelihood of giving in so as to avoid difficult situations, the tendency to resign oneself to the situation, and to try to avoid problems – was the problem-solving dimension most strongly associated with repetition, although this association was attenuated by self-esteem.Conclusions. The outcomes of the study indicate that treatments for DSH patients with repeated episodes should include problem-solving interventions. The observed passivity and avoidance of problems (coupled with low self-esteem) associated with repetition suggests that intensive therapeutic input and follow-up are required for those with repeated DSH.

15

POWELL, ROBERT. "Why Some Persistent Problems Persist." American Political Science Review 113, no. 4 (July 25, 2019): 980–96. http://dx.doi.org/10.1017/s0003055419000364.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Recent work on counter-insurgency, client states, foreign aid, and proxy wars uses a principal–agent framework to study the principal’s ability to induce an agent to exert effort on the principal’s behalf. This work broadly emphasizes the moral hazard problem and the actors’ limited commitment power. The latter is usually addressed through the logic of repeated games in which reneging on an agreement triggers future punishment. This study analyzes a related incentive problem that undermines the principal’s ability to induce an agent to exert effort on its behalf. The repeated-game’s enforcement mechanism tends to break down if the principal is trying to get the agent to resolve a problem that, if resolved, (i) creates an ongoing problem for the agent and (ii) simultaneously significantly reduces the agent’s ability to impose future costs on the principal. The principal cannot induce the agent to exert much effort in these circumstances, and the problem persists.

16

Ram, Y. M. "A method for finding repeated roots in transcendental eigenvalue problems." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 9 (September 1, 2008): 1665–71. http://dx.doi.org/10.1243/09544062jmes896.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

The eigenvalues of a gyroscopic system depend on a parameter, and the system may become unstable when eigenvalues collide. For continuous systems, the eigenvalue problem is represented by a matrix with transcendental elements. A method is developed to determine the value of the parameter that causes eigenvalues to collide. The method is implemented using a certain formula for the determination of the derivative of a matrix determinant without the use of symbolic expansion of the determinant. This formula simplifies the computational task considerably. Applications of the method are demonstrated by problems involving buckling by circulatory forces and oscillations of a gyroscopic system.

17

Elwood, Robert W. "Problems with repeated contests: a comment on Chapin et al." Behavioral Ecology 30, no. 5 (July 24, 2019): 1189. http://dx.doi.org/10.1093/beheco/arz121.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Brombin, Chiara, Edoardo Midena, and Luigi Salmaso. "Robust non-parametric tests for complex-repeated measures problems in ophthalmology." Statistical Methods in Medical Research 22, no. 6 (June 24, 2011): 643–60. http://dx.doi.org/10.1177/0962280211403659.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Lagunoff, Roger. "On the Evolution of Pareto‐Optimal Behavior in Repeated Coordination Problems." International Economic Review 41, no. 2 (May 2000): 273–93. http://dx.doi.org/10.1111/1468-2354.00064.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Pogrebnyak, A. D. "Solving Fatigue Problems for Reversed and Repeated Biaxial Combined Stress Cycles." International Applied Mechanics 52, no. 3 (May 2016): 315–25. http://dx.doi.org/10.1007/s10778-016-0754-6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Privalova, M. A., L. A. Karasaeva, G. A. Alekseev, and A. A. Okhotnikova. "Problems of post-hospital rehabilitation of patients suffering from post-stroke depression." Vestnik nevrologii, psihiatrii i nejrohirurgii (Bulletin of Neurology, Psychiatry and Neurosurgery), no. 9 (September 1, 2020): 31–37. http://dx.doi.org/10.33920/med-01-2009-03.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

The article covers the issues of organization of rehabilitation at the post-hospital stage for patients who have suffered an acute cerebrovascular accident. According to statistics, almost half of patients who have suffered an acute cerebrovascular accident have a risk of a repeated stroke in the next five years of life against the background of manifestations of post-stroke depression. It is established that in these cases, one of the causes of repeated cerebrovascular accidents is the failure of patients to take prescribed antidepressant medications. The article analyzes two groups of patients who were observed in dynamics up to 6–12 months after the rehabilitation treatment in the Department of Neurology of the hospital. The main group included the patients with diagnosed post-stroke depression. The control group included patients without signs of clinically apparent depression. As a result of a retrospective study, it was found that 85,7 % of patients in the main group who had a repeated stroke did not adhere to the regime for taking antidepressant medications. Among the patients who continue to take antidepressants, there have not been repeated cases of cerebral circulatory disorders. Therefore, timely detection and correction of post-stroke depression in the early stroke recovery period and maintaining the principle of continuity at the post-hospital stage of rehabilitation contributes not only to the recovery of neurological deficit, but also reduces the risk of developing repeated disorders of cerebral circulation.

22

Czabanowski, Robert. "Selected problems of wireless transmission of measurement signals." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (June 30, 2018): 384–87. http://dx.doi.org/10.24136/atest.2018.098.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

The article presents the quantified and qualitative effects of the application of wireless signal transmission with particular emphasis on the effects of repeated signal transformation and synchronization problems when using more complex measurement systems containing parallel operating wired and wireless interfaces.

23

Hendrickson, A. Dean. "Verbal Multiplication and Division Problems: Some Difficulties and Some Solutions." Arithmetic Teacher 33, no. 8 (April 1986): 26–33. http://dx.doi.org/10.5951/at.33.8.0026.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Verbal problems that involve multiplication and division are difficult for children to solve. Many of these difficulties arise because of their limited under tanding of these arithmetic operations. Their experience with the different kinds of situation that call for these operations is also limited. At the same time, these problem cannot be categorized easily because the situation that require these operations are varied. Nonetheless. multiplication is often taught only as “repeated addition” and division only as “repeated subtraction.” Children must have specific instruction in all the situation that require multiplication and division as arithmetic operations if they are to apply them successfully to verbal problems.

24

Fagin, Leonard. "Repeated self-injury: perspectives from general psychiatry." Advances in Psychiatric Treatment 12, no. 3 (May 2006): 193–201. http://dx.doi.org/10.1192/apt.12.3.193.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Patients who repeatedly injure themselves present particular management problems for general psychiatric teams. This article, the first of a series of four, examines the characteristics of those that present to adult mental health services, and the possible underlying background and trigger factors that lead to these anxiety-raising events. Suggestions are made on preventive and assessment procedures, staff reactions and management strategies aimed at helping patients deal with the overwhelming feelings that underlie self-injury.

25

Harpur, John G. E., Heather M. A. Macleod, and Joy V. Decker. "Development of Problem-Solving Strategies in Repeated Sentence-Verification Tasks." Perceptual and Motor Skills 65, no. 2 (October 1987): 655–61. http://dx.doi.org/10.2466/pms.1987.65.2.655.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This experiment was designed to investigate the development of problem-solving strategies by subjects in a sentence-verification paradigm which permitted repeated exposure to problems of the same type. While it was predicted that subjects would show a general improvement across trials as a function of repeated exposure to similar sets of problems, nevertheless it was predicted that some types of problem would show little or no improvement across trials, while other problems would show significant improvement as the subjects determined more efficient strategies to use to aid in rapid solutions. The results illustrate that certain types of sentence-verification tasks allow the development of efficient strategies which significantly decrease reaction times across trials, while other problem types produce uniform response rates across problem sets with negligible improvement as a function of practice. The results ate interpreted in terms of the relative availability of problem-solving strategies for the different types of verification task.

26

Qian, Jiang, Alan L. Andrew, Delin Chu, and Roger C. E. Tan. "Computing Derivatives of Repeated Eigenvalues and Corresponding Eigenvectors of Quadratic Eigenvalue Problems." SIAM Journal on Matrix Analysis and Applications 34, no. 3 (January 2013): 1089–111. http://dx.doi.org/10.1137/120879841.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Morishima, Mika, Tamaki Mitsuno, and Koya Kishida. "Problems related to mask use in hay fever sufferers by repeated surveys." International Journal of Clothing Science and Technology 29, no. 1 (March 6, 2017): 123–34. http://dx.doi.org/10.1108/ijcst-05-2016-0064.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Purpose Many Japanese hay fever (HF) sufferers wear a hygienic face mask to prevent pollen inhalation, but most find it very uncomfortable. The purpose of this paper is to identify the problems associated with mask wearing through repeated surveys. This information can be used in the improved design of a hygienic face mask that can be worn without discomfort by HF sufferers. Design/methodology/approach In 2009 (n=1,519), 2012 (n=2,994), and 2015 (n=3,213), repeated surveys of university students were conducted. HF sufferers were queried regarding symptoms, countermeasures, and problems associated with wearing a hygienic face mask. Holistic perspectives for each year were obtained by a co-occurrence analysis of the aggregated data. The triplet co-occurrence of specific problems was compared among the surveys using the χ2 test. Temporary and contemporary co-occurrence relationships were also determined. Findings Most Japanese university students with HF wore a hygienic face mask. In each survey, the most common problems associated with mask use were related to its thermal, hygroscopic, and air-flow properties. Contemporary problems with co-occurrence relationships were “humidity,” “breathing difficulty,” and “mist over eyeglasses” for males and, “humidity,” “breathing difficulty,” and “make-up coming off” for females. Originality/value The results of this study will contribute to improving hygienic face mask design. The co-occurrence of contemporary problems related to mask use was identified by comparing the results obtained in each year. The thermal, hygroscopic, and air flow properties of the mask cause these problems, and the air gap between the mask and the wearer’s face influences the inherent physical properties of the mask. To measure the air gap, a suitable hydrostatic pressure-balanced experimental method was applied, and the data were demonstrated experimentally.

28

Banik, Ivan, Jozefa Lukovičová, Gabriela Pavlendová, and Rudolf Podoba. "Problems in Teaching Physics at Technical Universities." Annals of West University of Timisoara - Physics 57, no. 1 (December 1, 2013): 10–23. http://dx.doi.org/10.1515/awutp-2015-0102.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Abstract The paper deals with the problem of decreasing level of knowledge of university students due to the changes of the school system in Slovakia. As the commonly repeated words connected with education in 21st.century are key competencies, we tried to look at the problems and challenges in teaching physics from this point of view. The role of classical experiments in our computerized world is also discussed.

29

Ho, Chien-Ju, Aleksandrs Slivkins, and Jennifer Wortman Vaughan. "Adaptive Contract Design for Crowdsourcing Markets: Bandit Algorithms for Repeated Principal-Agent Problems." Journal of Artificial Intelligence Research 55 (February 3, 2016): 317–59. http://dx.doi.org/10.1613/jair.4940.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Crowdsourcing markets have emerged as a popular platform for matching available workers with tasks to complete. The payment for a particular task is typically set by the task's requester, and may be adjusted based on the quality of the completed work, for example, through the use of "bonus" payments. In this paper, we study the requester's problem of dynamically adjusting quality-contingent payments for tasks. We consider a multi-round version of the well-known principal-agent model, whereby in each round a worker makes a strategic choice of the effort level which is not directly observable by the requester. In particular, our formulation significantly generalizes the budget-free online task pricing problems studied in prior work. We treat this problem as a multi-armed bandit problem, with each "arm" representing a potential contract. To cope with the large (and in fact, infinite) number of arms, we propose a new algorithm, AgnosticZooming, which discretizes the contract space into a finite number of regions, effectively treating each region as a single arm. This discretization is adaptively refined, so that more promising regions of the contract space are eventually discretized more finely. We analyze this algorithm, showing that it achieves regret sublinear in the time horizon and substantially improves over non-adaptive discretization (which is the only competing approach in the literature). Our results advance the state of art on several different topics: the theory of crowdsourcing markets, principal-agent problems, multi-armed bandits, and dynamic pricing.

30

Schliemann, Analúcia D., Cláudia Araujo, Maria Angela Cassundé, Suzana Macedo, and Lenice Nicéas. "Use of Multiplicative Commutativity by School Children and Street Sellers." Journal for Research in Mathematics Education 29, no. 4 (July 1998): 422–35. http://dx.doi.org/10.5951/jresematheduc.29.4.0422.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

We analyzed use of the commutative property for solving multiplication problems by children who learn about multiplication in schools and by street vendors who solve multiplication problems through repeated addition. Subjects were Brazilian street vendors with irregular school attendance, who had received no, or very little, school instruction on multiplication, and 1st- to 3rd-grade Brazilian school children. Results from 2 studies show that use of commutativity to solve multiplication problems is closely related to use of multiplication. Street sellers who rely exclusively on repeated addition to solve such problems may, however, use multiplicative commutativity if it represents a clear reduction in the number of computational steps needed to reach a solution. But their justifications for its use are often based on knowledge about multiplication.

31

Mandi, Jayanta, Emir Demirovi?, Peter J. Stuckey, and Tias Guns. "Smart Predict-and-Optimize for Hard Combinatorial Optimization Problems." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 02 (April 3, 2020): 1603–10. http://dx.doi.org/10.1609/aaai.v34i02.5521.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Combinatorial optimization assumes that all parameters of the optimization problem, e.g. the weights in the objective function, are fixed. Often, these weights are mere estimates and increasingly machine learning techniques are used to for their estimation. Recently, Smart Predict and Optimize (SPO) has been proposed for problems with a linear objective function over the predictions, more specifically linear programming problems. It takes the regret of the predictions on the linear problem into account, by repeatedly solving it during learning. We investigate the use of SPO to solve more realistic discrete optimization problems. The main challenge is the repeated solving of the optimization problem. To this end, we investigate ways to relax the problem as well as warm-starting the learning and the solving. Our results show that even for discrete problems it often suffices to train by solving the relaxation in the SPO loss. Furthermore, this approach outperforms the state-of-the-art approach of Wilder, Dilkina, and Tambe. We experiment with weighted knapsack problems as well as complex scheduling problems, and show for the first time that a predict-and-optimize approach can successfully be used on large-scale combinatorial optimization problems.

32

Dattoli, Giuseppe, Silvia Licciardi, Rosa Maria Pidatella, and Elio Sabia. "Repeated Derivatives of Hyperbolic Trigonometric Functions and Associated Polynomials." Axioms 8, no. 4 (December 6, 2019): 138. http://dx.doi.org/10.3390/axioms8040138.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Elementary problems as the evaluation of repeated derivatives of ordinary transcendent functions can usefully be treated with the use of special polynomials and of a formalism borrowed from combinatorial analysis. Motivated by previous researches in this field, we review the results obtained by other authors and develop a complementary point of view for the repeated derivatives of sec ( . ) , tan ( . ) and for their hyperbolic counterparts.

33

Hoeltge, Gerald A., Mari Gina Phillips, Patricia E. Styer, and Peter Mockridge. "Detection and Correction of Systematic Laboratory Problems by Analysis of Clustered Proficiency Testing Failures." Archives of Pathology & Laboratory Medicine 129, no. 2 (February 1, 2005): 186–89. http://dx.doi.org/10.5858/2005-129-186-dacosl.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Abstract Context.—The Laboratory Accreditation Program of the College of American Pathologists monitors the performance of its subscribers in proficiency testing (PT). Failure to perform as expected prompts the program to query the laboratory. Objective.—To determine whether laboratories are correcting apparent problems when contacted by the program about repeatedly unacceptable performance in a diagnostic test. Design.—Retrospective analysis of 1 year's records (2002–2003) from the College's Proficiency Testing Exception Summary correspondence, which identifies clusters of PT failures. The analysis focused on those laboratories in which the Proficiency Testing Exception Summary algorithm identified repeated failures over 3 or 4 testing events; PT performance is monitored as a condition of accreditation. During 1 survey year, approximately 6300 accredited laboratories collectively tested approximately 1 205 000 analytes and submitted results to their PT providers on more than 3 500 000 PT challenges. During the period of observation, 14 085 Proficiency Testing Exception Summary reports were mailed to participants. Educational materials were included to help laboratories identify and correct each PT failure. Results.—There were only 1304 cases of repeated PT failures after the initial correspondence from the accreditation program (9.3%). Of these, there were only 119 cases of unsatisfactory results on the subsequent PT event (9.1%). All systematic problems were resolved by the conclusion of the third round of correspondence. Conclusions.—Accredited laboratories generally perform well in proficiency testing. Identification of clusters of PT failures by the accreditation provider can help those laboratories having analytic difficulties to investigate and correct the problems.

34

Yoshimura, S., Y. Kaku, T. Ueda, K. Hayashi, Y. Nishimura, T. Andoh, and N. Sakai. "Results and Problems in Percutaneous Transluminal Angioplasty for Internal Carotid Artery Stenosis." Interventional Neuroradiology 4, no. 1_suppl (November 1998): 37–40. http://dx.doi.org/10.1177/15910199980040s105.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Percutaneous transluminal angioplasty (PTA) is currently performed as a therapeutic strategy for the management of the cervical carotid artery stenosis. In our clinic, PTA was performed successfully in all 24 patients initially. Restenosis was observed in 4 of 24 patients who received 3 to 6 month follow-up angiography. Repeated PTA was performed in 4 patients, 3 of whom were successfully treated, while severe wall dissection occurred in 1 patient. Furthermore, asymptomatic re-restenosis was noted in 1 of 4 patients who received repeated PTA. Dissection was noted in 5 of 28 procedures, which occurred more often in the patients with calcified or restenotic lesions. These results suggest that stenting or emergent surgery should be prepared in PTA of the carotid artery stenosis to avoid major complications, especially when the patients have calcified or restenotic lesions.

35

AGRAWAL, A., M. T. LYNSKEY, K. K. BUCHOLZ, N. G. MARTIN, P. A. F. MADDEN, and A. C. HEATH. "Contrasting models of genetic co-morbidity for cannabis and other illicit drugs in adult Australian twins." Psychological Medicine 37, no. 1 (November 1, 2006): 49–60. http://dx.doi.org/10.1017/s0033291706009287.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Background. The use of cannabis and other illicit drugs (OIDs) and their co-morbid misuse are frequently reported in the literature. Correlated vulnerabilities and causal or gateway influences have been implicated in this association. We investigated the source of this co-morbidity between cannabis use (experimentation, early and repeated use, and problems) and OID experimentation and problems using genetic models proposed by Neale and Kendler (American Journal of Human Genetics 1995, 57, 935–953).Method. In a sample of 4152 same-sex male and female adult Australian twin individuals, we fit 13 genetically informative models of co-morbidity to data on experimentation, early use, repeated use of cannabis and co-morbid OID experimentation, and to abuse/dependence (A/D) problems with cannabis and OIDs.Results. Model-fitting results suggest that common genetic, shared and unique environmental factors are responsible for the association between cannabis experimentation, early use, repeated use and A/D problems and OID experimentation or problems. The liability causation model, which is a reduced form of the correlated vulnerabilities model, also fit very well. In women, we found evidence for high-risk cannabis experimenters and repeated users to be at increased risk for OID experimentation, despite being below the risk threshold on the liability distribution for OID experimentation (extreme multiformity).Conclusions. Co-morbid cannabis and OID use and misuse are due partly to a common predisposition to substance use disorders. Putative causal effects could not be ruled out. These models warrant further research, so that features of the correlated vulnerabilities model and the gateway models can be studied jointly in a single series of adaptive nested models.

36

Kenjaboyevna, Bobokalonova Mushtariy. "COLLOQUIAL STYLE IN ENGLISH AND IT'S TRANSLATION PROBLEMS INTO UZBEK." European International Journal of Multidisciplinary Research and Management Studies 02, no. 04 (April 1, 2022): 1–4. http://dx.doi.org/10.55640/eijmrms-02-04-01.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Style is a reference language that has its own vocabulary, fixed combinations, sentences, and syntactic devices, and is a linguistic system that differs from other types in its internal elements, mainly expressive features. Elements of a particular style are easier to identify when they differ from other style elements. For example, the style of parables, the style of folk epics, the style of speech, the style of newspaper language, the style of office, the book style, the style of literature, the style of science, the style of science and technology, the style of publicism, the style of speech, the style of written speech style, etc. Style is a set of basic, typical ideological and artistic features of a writer's work that are repeated in his works. All of these must have their own alternatives in the translation. One cannot be replaced or substituted for another. In this article we discuss about information colloquial style in English and it's translation problems into Uzbek.

37

Radovsky, Boris S., and Natalie V. Murashina. "Shakedown of Subgrade Soil under Repeated Loading." Transportation Research Record: Journal of the Transportation Research Board 1547, no. 1 (January 1996): 82–88. http://dx.doi.org/10.1177/0361198196154700112.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

A new model for predicting the performance of a subgrade during soil compaction by rollers as a function of contact pressure and the strength characteristics of soils was developed. The model can be used to develop improved methods of pavement design, considering that the accumulation of plastic strains may continue under additional load repetitions or may cease to increase with time, indicating adaptation or shakedown conditions. To develop the mechanistic model of a subgrade, the homogeneous semi-infinite elastoplastic half-space under repeated loading was considered. By using a Mohr-Coulomb failure criterion, the boundary loads for which shakedown conditions or the steady state will be attained were determined. The residual horizontal normal stresses in the half-space were calculated and were shown to be in agreement with the measured distribution with depth. The theoretical and experimental results as they apply to soil compaction and pavement design problems are discussed. The required compaction contact pressure and the thickness of the compacted zone are estimated. The structural pavement design approach, considering residual normal stresses in a subgrade, is presented.

38

Pelzer, Ben, Rob Eisinga, and Philip Hans Franses. "Inferring Transition Probabilities from Repeated Cross Sections." Political Analysis 10, no. 2 (2002): 113–33. http://dx.doi.org/10.1093/pan/10.2.113.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This paper discusses a nonstationary, heterogeneous Markov model designed to estimate entry and exit transition probabilities at the micro level from a time series of independent cross-sectional samples with a binary outcome variable. The model has its origins in the work of Moffitt and shares features with standard statistical methods for ecological inference. We outline the methodological framework proposed by Moffitt and present several extensions of the model to increase its potential application in a wider array of research contexts. We also discuss the relationship with previous lines of related research in political science. The example illustration uses survey data on American presidential vote intentions from a five-wave panel study conducted by Patterson in 1976. We treat the panel data as independent cross sections and compare the estimates of the Markov model with both dynamic panel parameter estimates and the actual observations in the panel. The results suggest that the proposed model provides a useful framework for the analysis of transitions in repeated cross sections. Open problems requiring further study are discussed.

39

Wible, B. "Abnormal neural encoding of repeated speech stimuli in noise in children with learning problems." Clinical Neurophysiology 113, no. 4 (April 2002): 485–94. http://dx.doi.org/10.1016/s1388-2457(02)00017-2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Lijia, Fan, Xiang Zhihai, Xue Mingde, and Cen Zhangzhi. "A sub-domain method for solving stochastic problems with large uncertainties and repeated eigenvalues." International Journal for Numerical Methods in Biomedical Engineering 27, no. 8 (December 1, 2009): 1264–79. http://dx.doi.org/10.1002/cnm.1357.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Parent, Carine, Irina Pokhvisneva, Hélène Gaudreau, Michael J. Meaney, and Patricia P. Silveira. "Association Between Repeated Episodes of Gastroenteritis and Mental Health Problems in Childhood and Adolescence." Journal of the American Academy of Child & Adolescent Psychiatry 58, no. 11 (November 2019): 1115–23. http://dx.doi.org/10.1016/j.jaac.2019.01.007.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Dobrov, A. N., and S. A. Baranova. "Problems of holding liable for repeated non-compliance with restrictions established under administrative supervision." Вестник Сибирского юридического института МВД России, no. 3 (2020): 59–64. http://dx.doi.org/10.51980/2542-1735_2020_3_59.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Saburov, M., and Kh Saburov. "Applications of Quadratic Stochastic Operators to Nonlinear Consensus Problems." Contemporary Mathematics. Fundamental Directions 68, no. 1 (April 20, 2022): 110–26. http://dx.doi.org/10.22363/2413-3639-2022-68-1-110-126.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Historically, the idea of reaching consensus through repeated averaging was introduced by De Groot for a structured time-invariant and synchronous environment. Since that time, the consensus, which is the most ubiquitous phenomenon of multi-agent systems, becomes popular in the various scientific fields such as biology, physics, control engineering and social science. In this paper, we give an overview of the recent development of applications of quadratic stochastic operators to nonlinear consensus problems. We also present some refinement and improvement of the previous results.

44

Fischbein, Efraim, Maria Deri, Maria Sainat Nello, and Maria Sciolis Marino. "The Role of Implicit Models in Solving Verbal Problems in Multiplication and Division." Journal for Research in Mathematics Education 16, no. 1 (January 1985): 3–17. http://dx.doi.org/10.5951/jresematheduc.16.1.0003.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Arithmetical operations were assumed to remain attached to primitive behavioral models that influence tacitly the choice of an operation even after the learner has had solid formal-algorithmic training. The model for multiplication was conjectured to be repeated addition, and two primitive models (partitive and quotative) were seen as linked to division. A total of 623 pupils enrolled in 13 Italian schools (Grades 5, 7, and 9) were asked to choose the operation needed to solve 26 multiplication and division word problems. Violations by the numerical data of the constraints imposed by the assumed tacit models (for instance, when the operator was a decimal number) constituted particular sources of difficulty at all three grade levels. The findings seemed to confirm the impact of the repeated addition model on multiplication and of the partitive model on division. The quotative division model influenced the pupils' choices only at the ninth-grade level.

45

VAN LEIJEN, A. VINCENT, LEON ROTHKRANTZ, and FRANS GROEN. "METAHEURISTIC OPTIMIZATION OF ACOUSTIC INVERSE PROBLEMS." Journal of Computational Acoustics 19, no. 04 (December 2011): 407–31. http://dx.doi.org/10.1142/s0218396x1100447x.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Swift solving of geoacoustic inverse problems strongly depends on the application of a global optimization scheme. Given a particular inverse problem, this work aims to answer the questions how to select an appropriate metaheuristic search strategy, and how to configure it for optimal performance. Four state-of-the-art metaheuristics have been selected for this study; these are simulated annealing, genetic algorithms, ant colony optimization, and differential evolution. To make a careful comparison, each of these metaheuristic optimizers has been configured for two real-world geoacoustic inverse problems. The influence and sensitivity of specific performance parameters have been studied by analysis of repeated problem-solving. It is concluded that a proper configuration and tuning is just as important as selection of the best optimization scheme. The application in this work is geoacoustic inversion, but the argumentation on selecting and configuring an appropriate metaheuristic has potential for any indirect inverse problem.

46

Revie, Gay, and Dawne Larkin. "Task-Specific Intervention with Children Reduces Movement Problems." Adapted Physical Activity Quarterly 10, no. 1 (January 1993): 29–41. http://dx.doi.org/10.1123/apaq.10.1.29.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

This investigation examined the effects of eight sessions of intensive teaching of motor tasks on children with poor coordination. The 24 children, aged 5 to 9 years, were grouped by age and assigned to 1 of 10 teachers. These teachers were then randomly assigned to either Task Treatment Group 1 (TTG1) to teach both the overarm throw and hopping to their allocated children or Task Treatment Group 2 (TTG2) to teach target kicking and the volleyball bounce and catch. Each group acted as the other group’s control. Repeated measures ANOVA of pretest-posttest scores showed that intensive teaching of the overarm throw, target kicking, and the bounce-and-catch task resulted in significant gains for the respective groups.

47

Rudnick, Zeév, and Ron Peled. "On locally repeated values of arithmetic functions over Fq[T]." Quarterly Journal of Mathematics 70, no. 2 (October 15, 2018): 451–72. http://dx.doi.org/10.1093/qmath/hay053.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

AbstractThe frequency of occurrence of ‘locally repeated’ values of arithmetic functions is a common theme in analytic number theory, for instance in the Erdős–Mirsky problem on coincidences of the divisor function at consecutive integers, the analogous problem for the Euler totient function and the quantitative conjectures of Erdős, Pomerance and Sarkőzy and of Graham, Holt and Pomerance on the frequency of occurrences. In this paper, we introduce the corresponding problems in the setting of polynomials over a finite field, and completely solve them in the large finite field limit.

48

Kristek, Vladimir, Jaromir Kunrt, Miroslav Skaloud, and Shota Urushadze. "Problems Connected with the Application of Lamella Flanges in Steel Bridge Construction." Applied Mechanics and Materials 769 (June 2015): 13–18. http://dx.doi.org/10.4028/www.scientific.net/amm.769.13.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Lamella flanges (Fig. 1) have lately grown popular with the designers of steel bridges –in their belief that these flanges provide us with the possibility of avoiding very thick flange plates in steel bridge structures. This belief is based on the assumption that the lamellas are perfectly plane and, therefore, in perfect contact everywhere, so that the loading from one lamella is transmitted into the other via pure compression, and that the perfect interaction of both lamellas is materialized by means of boundary fillet welds connecting both of the two lamellas. This simple assumption is, however, far from reality: it is not in the means of steel fabricators, not even in the means of those which are very progressively equipped, to produce perfectly plane flange lamellas. Then both lamellas exhibit unavoidable initial curvatures, which in combination form a gap between the lamellas, and consequently the directly loaded lamella is pressed into this gap. As the loading acting on every bridge is many times repeated, the aforesaid phenomenon is also many times repeated, (we can say that the lamellas „breathe“), and then an unavoidable cumulative damage process in the lamellas comes to being.

49

Catts, Hugh W. "Speech Production Deficits in Developmental Dyslexia." Journal of Speech and Hearing Disorders 54, no. 3 (August 1989): 422–28. http://dx.doi.org/10.1044/jshd.5403.422.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

In this study, dyslexic and normal subjects rapidly repeated a series of phonologically complex and simple phrases. Dyslexic subjects repeated the phrases at a significantly slower rate and, in the complex condition, made significantly more errors. An examination of errors suggested that dyslexics may have difficulties in the planning stage of speech production. Findings are discussed in reference to other phonological deficits and oral reading problems in dyslexia.

50

YANOVSKI, JACK A., LAWRENCE M. NELSON, ENGLISH D. WILLIS, and GORDON B. CUTLER. "Repeated, Childhood Vaginal Bleeding Is Not Always Precocious Puberty." Pediatrics 89, no. 1 (January 1, 1992): 149–51. http://dx.doi.org/10.1542/peds.89.1.149.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Анотація:

Vaginal bleeding is an uncommon problem in childhood. In infants and children, vaginal bleeding may result from the hormonal fluctuations of precocious puberty.1-4 However, many cases are related to local vaginal problems. We report a case of recurrent vaginal bleeding caused by infection with Shigella flexneri that was difficult to diagnose and treat. This patient was considered by her general pediatrician possibly to have precocious puberty because of her repeated episodes of bleeding. CASE REPORT The patient was a 2-year-old Peruvian girl who was suffering from severe nonbloody, nonpurulent diarrhea when she met her adoptive parents in July 1989. The diarrhea persisted for almost 2 months, and although stool cultures in Peru were unrevealing, she was treated with 10-day courses of both trimethoprim-sulfamethoxazole and metronidazole.

Статті в журналах з теми "Repeated problems"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями