Bibliographies thématiques / INDEX SIZE

Littérature scientifique sur le sujet « INDEX SIZE »

Auteur : Grafiati
Publié le 11 septembre 2023

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Articles de revues sur le sujet "INDEX SIZE"

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Sonoo, M., et E. V. Stålberg. « 56. Size index revisited ». Clinical Neurophysiology 123, no 6 (juin 2012) : e32-e33. http://dx.doi.org/10.1016/j.clinph.2011.11.138.

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Vandekar, Simon, Ran Tao et Jeffrey Blume. « A Robust Effect Size Index ». Psychometrika 85, no 1 (mars 2020) : 232–46. http://dx.doi.org/10.1007/s11336-020-09698-2.

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AbstractEffect size indices are useful tools in study design and reporting because they are unitless measures of association strength that do not depend on sample size. Existing effect size indices are developed for particular parametric models or population parameters. Here, we propose a robust effect size index based on M-estimators. This approach yields an index that is very generalizable because it is unitless across a wide range of models. We demonstrate that the new index is a function of Cohen’s d, $$R^2$$ R 2 , and standardized log odds ratio when each of the parametric models is correctly specified. We show that existing effect size estimators are biased when the parametric models are incorrect (e.g., under unknown heteroskedasticity). We provide simple formulas to compute power and sample size and use simulations to assess the bias and standard error of the effect size estimator in finite samples. Because the new index is invariant across models, it has the potential to make communication and comprehension of effect size uniform across the behavioral sciences.
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Pan, Qi. « Novel droplet size and complex refractive index measurement based on rainbow detection ». Chinese Optics Letters 10, S2 (2012) : s22901. http://dx.doi.org/10.3788/col201210.s22901.

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Brencis, Ainars, et Jacob Ikkala. « Does City Size Matter ? City Brand Index VS Population Size ». Sociology and Anthropology 1, no 2 (septembre 2013) : 95–103. http://dx.doi.org/10.13189/sa.2013.010208.

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Yngve, Agneta. « The Santa Body Size Index (SBSI) ». Public Health Nutrition 10, no 12 (décembre 2007) : 1415–16. http://dx.doi.org/10.1017/s1368980007001176.

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Keshari Jena, Sangram, et Ashutosh Dash. « Does contract size matter for price discovery and risk management in stock index futures ? » Investment Management and Financial Innovations 13, no 3 (23 août 2016) : 62–74. http://dx.doi.org/10.21511/imfi.13(3).2016.05.

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In an effort to increase the liquidity and accessibility to the investors, National Stock Exchange of India (NSE) had reduced contract size of its Nifty index futures two times from 200 to 100 and, subsequently, to 50 units. How does this change in contract size of index futures impact the informed and hedge based trading, thereby contributing to the twin objectives of price discovery and risk management, respectively? VAR model is applied to daily return volatility, volume and open interest to study the impact. Significant feedback relationship between volume and volatility following the reduction in contract size establishes the informational trading and price discovery. However, no causality from volatility to open interest implies contract size is not a determinant of hedging. But significant causality from open interest to volatility is establishing the non-informational and liquidity trading. So stock exchanges should consider the appropriate lot size before going for introducing new futures contract
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Ratanasiripong, Paul, et Heidi Burkey. « Body Mass Index and Body Size Perception ». Californian Journal of Health Promotion 9, no 1 (1 mai 2011) : 18–24. http://dx.doi.org/10.32398/cjhp.v9i1.2054.

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The present study investigated actual body size as measured by the Body Mass Index in comparison to self-reported body size among diverse college student population. The study was conducted at a large public university in the western United States. Of the random sample of 15,000 enrolled students selected to receive an electronic survey, a total of 1,798 students elected to participate. Normalizing of overweight and obesity was found among study participants. The results from this survey indicate that, despite the fact that the majority of participants engaged in weight management methods, all gender and ethnic groups underreported instances of overweight and obesity, as well as discrepancies between perceived body image and actual body size. Implications for health promotion and future research are highlighted.
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Shanmugam, Ramalingam. « Index method of determining the sample size ». Communications in Statistics - Theory and Methods 27, no 4 (janvier 1998) : 1001–8. http://dx.doi.org/10.1080/03610929808832140.

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Fearon, William F., et Rajesh Dash. « Index of Microcirculatory Resistance and Infarct Size ». JACC : Cardiovascular Imaging 12, no 5 (mai 2019) : 849–51. http://dx.doi.org/10.1016/j.jcmg.2018.04.004.

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Hasselbalch, H., D. L. Jeppesen, A. K. Ersbøll, M. D. M. Engelmann et M. B. Nielsen. « Thymus size evaluated by sonography ». Acta Radiologica 38, no 2 (mars 1997) : 222–27. http://dx.doi.org/10.1080/02841859709172053.

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Objective: to use sonography in a follow-up study aimed at assessing the size of the thymus in healthy infants, and to search for a possible relation to clinical variables, breast-feeding status, and illness. Material and Methods: Forty-seven healthy infants were examined as neonates and re-examined at 4 months of age. Thirty-seven of the infants were also re-examined at 8,10, and 12 months of age. the thymus size was measured with the sonographic thymic index used as a volume estimate. the correlations between the thymic index and the sex, weight, length, illness, and breast-feeding status of the infants were analysed. Results: at birth the median thymic index was 12 (range 4–29). at 4 months the median thymic index was 28 (range 12–83). the thymic index was positively correlated to the body length of the infant and to its breast-feeding status (p<0.0001). at 8 months the median thymic index was 29 (range 6–55) and most of the variation could be explained by the length of the infant (p=0.0018, r=0.50). at 10 months the median thymic value had decreased to 19 (range 9–49), and at 12 months to 17 (range 7–53). Infants exclusively breast-fed during the first 4 months of their lives had a larger thymic index at 10 months than formula-fed infants (p=0.0024). Infants with fever episodes from 10 to 12 months had a smaller thymic index at 12 months (p=0.0241). Conclusion: the thymus size in healthy infants increases from birth to 4 and 8 months of age and then decreases. Most of the individual variation can be explained by breast-feeding status and body size, and to a lesser extent by illness. We propose statistical models by which the normal variation/distribution of the thymic size can be estimated in infants up to one year of age.
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Thèses sur le sujet "INDEX SIZE"

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Taunson, Jude W. « Stock index futures in Malaysia : does tick size reduction matters ? » Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/9886.

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This thesis investigates the impact of tick size reduction on spot index liquidity and in turn on the inter-market pricing relationship between spot and futures indices. Three empirical chapters are presented. The first study investigates the impact on the spot index liquidity in emerging Malaysian capital market. To the best of our knowledge, we are first to investigate this issue. We find higher trading volume following tick size reduction. Further, we find lower mispricing between the spot and futures indices after the reduction. This is an indication that traders benefit from the lower tick sizes. In our second study, the price discovery role of the index futures is assessed. We find that the index futures adjust to equilibrium level ahead of its underlying. Interestingly, the spot index adjusts to equilibrium level at a higher speed in comparison to pre-reduction period. This implies that the lowering of tick sizes facilitates better incorporation of stock specific information. Altogether, the lowering of tick sizes seems to improve index futures price discovery role. In our third paper, we investigate the effectiveness of the index futures as a hedging instrument. We find evidence that the ability of the futures in reducing price risk is greatly enhanced due to the positive impacts of the lower tick sizes.
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Coe, Robert, et Soto César Merino. « Effect Size : A guide for researchers and users ». Pontificia Universidad Católica del Perú, 2003. http://repositorio.pucp.edu.pe/index/handle/123456789/100341.

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The present article describes a method to quantify the magnitude of the differences between two measures and/or the degree of the effect of a variable about criteria, and it is named likethe effect size measure, d. Use it use in research and applied contexts provides a quitedescriptive complementary information, improving the interpretation of the results obtained bythe traditional methods that emphasize the statistical significance. Severa) forms there are of interpreting the d, and an example taken of an experimental research, is presented to clarify the concepts and necessary calculations. This method is not robust to sorne conditions that they candistort its interpretation, for example, the non normality of the data; alternative methods are mentioned to the statistical d. We ending with sorne conclusions that will notice about the appropriate use of it.
El presente artículo describe un método para cuantificar la magnitud de las diferencias entredos mediciones y/o el grado del efecto de una variable sobre un criterio, y es llamado lamedida de la magnitud del efecto, de su uso en contextos de investigación y aplicados proporciona un información complementaria bastante descriptiva, mejorando la interpretaciónde los resultados obtenidos por los métodos tradicionales que enfatizan la significación estadística. Existen varias formas de interpretar el estadístico d, y se presenta un ejemplo,tomado de una investigación experimental, para aclarar los conceptos y cálculos necesarios.Este método no es robusto a ciertas condiciones que pueden distorsionar su interpretación, por ejemplo, la no normalidad de los datos entre otros; se mencionan métodos alternativos alestadístico d. Finalizamos con unas conclusiones que advierten sobre su apropiado uso.
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Ngundze, Unathi. « Statistical comparison of international size-based equity index using a mixture distribution ». Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/d1012367.

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Investors and financial analysts spend an inordinate amount of time, resources and effort in an attempt to perfect the science of maximising the level of financial returns. To this end, the field of distribution modelling and analysis of firm size effect is important as an investment analysis and appraisal tool. Numerous studies have been conducted to determine which distribution best fits stock returns (Mandelbrot, 1963; Fama, 1965 and Akgiray and Booth, 1988). Analysis and review of earlier research has revealed that researchers claim that the returns follow a normal distribution. However, the findings have not been without their own limitations in terms of the empirical results in that many also say that the research done does not account for the fat tails and skewness of the data. Some research studies dealing with the anomaly of firm size effect have led to the conclusion that smaller firms tend to command higher returns relative to their larger counterparts with a similar risk profile (Banz, 1981). Recently, Janse van Rensburg et al. (2009a) conducted a study in which both non- normality of stock returns and firm size effect were addressed simultaneously. They used a scale mixture of two normal distributions to compare the stock returns of large capitalisation and small capitalisation shares portfolios. The study concluded that in periods of high volatility, the small capitalisation portfolio is far more risky than the large capitalisation portfolio. In periods of low volatility they are equally risky. Janse van Rensburg et al. (2009a) identified a number of limitations to the study. These included data problems, survivorship bias, exclusion of dividends, and the use of standard statistical tests in the presence of non-normality. They concluded that it was difficult to generalise findings because of the use of only two (limited) portfolios. In the extension of the research, Janse van Rensburg (2009b) concluded that a scale mixture of two normal distributions provided a more superior fit than any other mixture. The scope of this research is an extension of the work by Janse van Rensburg et al. (2009a) and Janse van Rensburg (2009b), with a view to addressing several of the limitations and findings of the earlier studies. The Janse van rensburg (2009b) study was based on data from the Johannesburg Stock Exchange (JSE); this study seeks to compare their research by looking at the New York Stock Exchange (NYSE) to determine if similar results occur in developed markets. For analysis purposes, this study used the statistical software package R (R Development Core Team 2008) and its package mixtools (Young, Benaglia, Chauveau, Elmore, Hettmansperg, Hunter, Thomas, Xuan 2008). Some computation was also done using Microsoft Excel. This dissertation is arranged as follows: Chapter 2 is a literature review of some of the baseline studies and research that supports the conclusion that earlier research finding had serious limitations. Chapter 3 describes the data used in the study and gives a breakdown of portfolio formation and the methodology used in the study. Chapter 4 provides the statistical background of the methods used in this study. Chapter 5 presents the statistical analysis and distribution fitting of the data. Finally, Chapter 6 gives conclusions drawn from the results obtained in the analysis of data as well as recommendations for future work.
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Miller, Brian Herbert. « Improved aerosol optical depth and particle size index from satellite detected radiance ». Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26590.

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Klink, Tammy. « Evaluation of nurses' perceptions of patients' weight status in relation to their own Body Mass Index (BMI) ». Menomonie, WI : University of Wisconsin--Stout, 2005. http://www.uwstout.edu/lib/thesis/2005/2005klinkt.pdf.

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Farinah, Shiara Connell Lenda Jo Ulrich Pamela V. « Perceptions of the size, shape and attractiveness of female body scans relative to body mass index ». Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/FARINAH_SHIARA_52.pdf.

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Onur, Emine Mercan. « PREDICTING THE PERMEABILITY OF SANDY SOILS FROM GRAIN SIZE DISTRIBUTIONS ». Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1389550812.

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VanderSchaaf, Curtis Lee. « Modeling maximum size-density relationships of loblolly pine (Pinus taeda L.) plantations ». Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/29489.

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Self-thinning quantifies the reduction in tree numbers due to density-dependent mortality. Maximum size-density relationships (MSDRs) are a component of self-thinning that describe the maximum tree density per unit area obtainable for a given average tree size, often quadratic mean diameter (D). An MSDR species boundary line has been defined as a static upper limit of maximum tree density -- D relationships that applies to all stands of a certain species within a particular geographical area. MSDR dynamic thinning lines have been defined as the maximum tree density obtainable within an individual stand for a particular D which have been shown to vary relative to planting density. Results from this study show that differences in boundary levels of individual stands cause the MSDR species boundary line slope estimate to be sensitive to the range of planting densities within the model fitting dataset. Thus, a second MSDR species boundary line was defined whose slope is the average slope of all MSDR dynamic thinning lines. Mixed-models are presented as a statistical method to obtain an estimate of the population average MSDR dynamic thinning line slope. A common problem when modeling self-thinning is to determine what observations are within generally accepted stages of stand development. Segmented regression is presented as a statistical and less subjective method to determine what observations are within various stages of stand development. Estimates of D and trees per acre (N) where MSDR dynamic thinning lines begin and end on the logarithmic scale were used as response variables and predicted as a function of planting density. Predictions of MSDR dynamic thinning line beginning and ending D and N are used in an alternative MSDR dynamic thinning line slope estimation method. These models show that the maximum value of Reineke's Stand Density Index (SDI) varies relative to planting density. By relating planting density specific Zone of Imminent Competition Mortality boundaries to a MSDR species boundary line, self-thinning was found not to begin at a constant relative SDI. Thus, planting density specific Density Management Diagrams (DMD) showed that self-thinning began at 40 to 72% for planting densities of 605 and 2722 seedlings per acre, respectively.
Ph. D.
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Agagliate, Jacopo. « A Mie-based flow cytometric size and real refractive index determination method for natural marine particle populations ». Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28674.

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Following the path of combining Mie theory and flow cytometry to assign size and refractive index to suspended particles in the steps of Ackleson & Spinrad (1988) and, more recently, Green et al. (2003a, 2003b), a Mie-based flow cytometry (FC) method was developed to retrieve particle size distributions (PSDs) and real refractive index (rRI) information in natural waters. The need for a technique capable of directly assessing both size and real refractive index of the particles was first established by carrying out a sensitivity analysis of the effect a spectrally complex refractive index and log-normal variations to commonly employed PSD models have on the optical behaviour of the particle population. The Mie-based FC method proper was then developed and tested, initially against standard particles of known diameter and rRI and secondly on two datasets, one of algal culture samples (AC dataset) and one of natural seawater samples collected in UK coastal waters (UKCW dataset).The method retrieved PSDs and real refractive index distributions (PRIDs) for both datasets. FC PSDs were validated against known algal sizes for AC samples and against independent PSDs measured via laser diffractometry for UKCW samples. PRIDs were then combined with FC PSDs and fed into Mie-based forward optical modelling to reconstruct bulk IOPs. These achieved broad agreement with independent IOP measurements, lending further support to the results of the FC method and to the employment of Mie theory within the context of optical modelling of natural particle populations. Furthermore, the unique insight offered by the FC method in terms of PSD and PRID determination allowed for the assessment of the individual contribution of particle subpopulations to the bulk IOPs, both by size (small/large particle fractions) and by particle type (inorganic/organic/fluorescent fractions). Lastly, PSDs and PRIDs were combined with literature-derived models of particle density, cell organic carbon and chlorophyll-A content, in an effort to explore the biogeochemical properties of the particle populations within the UKCW dataset. The models successfully estimated independent measurements of particulate suspended matter and (after an optimisation procedure) of organic carbon and chlorophyll-A content.
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Breytenbach, Marissa Cornelia. « Die invloed van gemeentedemografie op die fisieke aktiwiteit- en stressimptoomindeks by N.G. predikante / Marissa Cornelia Breytenbach ». Thesis, North-West University, 2004. http://hdl.handle.net/10394/659.

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Research among ministers showed that they are experiencing high levels of stress due to career demands and having to cope with problems on their own (Grosch & Olsen, 2000:260). This has a detrimental effect on their health (Andrew, 1997:SO). Participation in physical activity have positive effects on the physical and psychological well being. Physical activity decrease work stress and increase work satisfaction and -stamina (Dreyer & Strydom, 1992:28). The objectives of this study was to determine the profiles of physical activity participation and the incidence of stress symptoms in relation to congregation type and congregation size in ministers, as well as the influence of physical activity on the relationship between stress symptoms and congregation demography (type and size). Congregation demography was divided into congregation type (location) as well as congregation size (number of church members). In this study a single cross sectional design that has been based on an availability profile has been used. The subjects were 340 ministers of the Dutch Reformed Church, who volunteered to participate in the study. The quality of participation in physical activity was determined with Sharkey's (1997:432) physical activity index The incidence of stress symptoms was determined with Burn's (1988) stress index and the congregation demography was determined by a self-reported questionnaire. The data was analysed by means of a one-way analysis of variance. From the data it is clear that the majority of the respondents were physically inactive and have a low incidence of stress symptoms in relation to congregation demography. The results of the stress symptoms may be attributed to the fact that religion and belief in God may play a vital role in the management of stress. Physical activity participation indicated a statistical significant (p≤0.05) influence on the relationship between stress symptoms and congregation demography. A highly practical significant difference (ES≥0.8) existed between high active and low active ministers working in congregations in rural areas. Physical activity participation also showed a moderate practical significant influence (ES≥0.5) on the relationship between stress symptoms and congregation demography (type and size). It was concluded that physical activity presented a salutogenic effect on psychological well-being among ministers and that congregation demography can influence physical and psycho-emotional health threats of Dutch Reformed ministers.
Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2005.
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Livres sur le sujet "INDEX SIZE"

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New York (State). Dept. of Audit and Control. Division of Management Audit. Department of Labor size of fund index. [Albany, N.Y.] : Office of the State Comptroller, 1990.

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Miller, Brian Herbert. Improved aerosol optical depth and particle size index from satellite detected radiance. Monterey, Calif : Naval Postgraduate School, 1991.

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Waters, Anne-Marie. Assessment of self-reported height and weight and their use in the determination of body mass index : Analysis of data from the 1989 Risk Factor Prevalence Survey. Canberra, ACT : Australian Institute of Health and Welfare, 1993.

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Rashad, Inas. The super size of America : An economic estimation of body mass index and obesity in adults. Cambridge, MA : National Bureau of Economic Research, 2005.

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Rashad, Inas. The super size of America : An economic estimation of body mass index and obesity in adults. Cambridge, MA : National Bureau of Economic Research, 2005.

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Edminster, Carleton B. Site index curves for aspen in the central Rocky Mountains. [Fort Collins, Colo.] : USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1985.

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Payandeh, Bijan. Predictability of site index from soil factors and lesser vegetation in northern Ontario forest types. Sault Ste. Marie, Ont : Great Lakes Forestry Centre, 1986.

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Edminster, Carleton B. Site index curves for aspen in the central Rocky Mountains. Fort Collins, Colo.] : USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1985.

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Carmean, Willard H. Site index curves for forest tree species in the eastern United States. St. Paul, Minn : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1989.

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Cochran, P. H. Site index, height growth, normal yields, and stocking levels for larch in Oregon and Washington. [Portland, Or.?] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1985.

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Chapitres de livres sur le sujet "INDEX SIZE"

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Zaher, Fadi. « Equity Factor Investing : Size ». Dans Index Fund Management, 135–49. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19400-0_8.

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Di, Ya-Feng, Zhi-Hui Wang, Chin-Feng Lee et Chin-Chen Chang. « The Reduction of VQ Index Table Size by Matching Side Pixels ». Dans Advances in Intelligent Information Hiding and Multimedia Signal Processing, 203–10. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-50212-0_25.

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Chan, Ho-Leung, Tak-Wah Lam, Wing-Kin Sung, Siu-Lung Tam et Swee-Seong Wong. « A Linear Size Index for Approximate Pattern Matching ». Dans Combinatorial Pattern Matching, 49–59. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11780441_6.

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Pourabbas, Elaheh, Arie Shoshani et Kesheng Wu. « Minimizing Index Size by Reordering Rows and Columns ». Dans Lecture Notes in Computer Science, 467–84. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31235-9_31.

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Al Ruqeishi, Khalil, et Michal Konečný. « Regrouping Metric-Space Search Index for Search Engine Size Adaptation ». Dans Similarity Search and Applications, 271–82. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25087-8_26.

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Cheng, Rong-shi, et Shi-lin Zhao. « Specific Refractive Index Increments Determined by Quantitative Size-Exclusion Chromatography ». Dans ACS Symposium Series, 113–21. Washington, DC : American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0521.ch009.

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Timpa, Judy D. « Characterization by Size-Exclusion Chromatography with Refractive Index and Viscometry ». Dans Advances in Chemistry, 141–50. Washington, DC : American Chemical Society, 1995. http://dx.doi.org/10.1021/ba-1995-0247.ch011.

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Ono, Hirotaka, Mut unori Yagiura et Toshihide Ibaraki. « An Index for the Data Size to Extract Decomposable Structures in LAD ». Dans Algorithms and Computation, 279–90. Berlin, Heidelberg : Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45678-3_25.

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Samson, M. L., K. N. An, M. G. Rock, R. A. Robb et E. Y. S. Chao. « The Development of a Size and Shape Matching Index for Osteochondral Allografts ». Dans Limb Salvage, 25–31. Berlin, Heidelberg : Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-75879-9_4.

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Hara, Kiyotaka, Takeshi Umezawa et Noritaka Osawa. « Effect of Button Size and Location When Pointing with Index Finger on Smartwatch ». Dans Human-Computer Interaction : Interaction Technologies, 165–74. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20916-6_16.

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Actes de conférences sur le sujet "INDEX SIZE"

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Pankratov, Michail M. « Algorithm to Select the GRIN Lens and Calculate its Length for Variable Magnification Photocoagulating Endoprobe ». Dans Gradient-Index Optical Imaging Systems. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/giois.1987.fa4.

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The probe currently available for intraocular photocoagulation consists of a single quartz fiber that delivers a diverging beam. The surgeon must estimate the beam diameter and its irradiance on the target. As the optical medium inside the eye changes during surgery, beam divergence and other related beam parameters (diameter and irradiance) also change. Our goal was to design a probe that: (1) delivers a converging beam with a known waist at a known distance in front of the tip; (2) maintains waist size regardless of changing optical media; (3) has an array of spot sizes; (4) has an unchanged output power at the exit from the probe for all spots in the spot size range (SSR) for any constant-input laser; and (5) has a total diameter of 0.9 mm.
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Ramaswamy, R. V., T. Horton et P. G. Suchoski. « Graded Index Ti : LiNbO3 Waveguides : Process Optimization ». Dans Gradient-Index Optical Imaging Systems. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/giois.1987.thb4.

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Channel waveguides with minimum mode size, and electrode patterns that maximize the overlap integral between the guided optical field and the applied modulating field are essential for efficient operation of Ti diffused LiNbO3 modulators, switches and other active guided wave devices. Previous efforts have concentrated on improving the coupling efficiency of Ti:LiNbO3 waveguides to single mode fibers. A total fiber-waveguide-fiber insertion loss of 1 dB at 1.32 μm in a z-cut LiNbO3 crystal was achieved [1] by carefully selecting the fabrication parameters so that the TE and TM modal width and depth nearly matched that of a single mode fiber, specifically for guides with Ti strip widths in the range of 6 -10 μm. These waveguides, however, are not quite suitable for efficient active, guided wave device operation, due to their large mode size. Instead, minimum mode size waveguides are required for the maximization of the overlap integral between the optical and modulating fields. It is recognized that the coupling of suchwaveguides to single mode fibers will result in a large mode mismatch loss. In order to reduce this coupling loss to a reasonable value, it is necessary to incorporate a tapered transition [2] between the small mode size LiNbO3 guide and the single mode fiber.
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GM, Pavan Kumar, Krishna P. Leela, Mehul Parsana et Sachin Garg. « Relevance-index size tradeoff in contextual advertising ». Dans the 19th ACM international conference. New York, New York, USA : ACM Press, 2010. http://dx.doi.org/10.1145/1871437.1871713.

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Wu, Shang Pin, Eisuke Nihei et Yasuhiro Koike. « The Large Dimensional Radial Grin Polymer ». Dans Gradient-Index Optical Imaging Systems. Washington, D.C. : Optica Publishing Group, 1994. http://dx.doi.org/10.1364/giois.1994.gwb2.

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Recently, the optical technology has progressed with various kinds of materials. The graded index optical materials are expected as rod lens, low chromatic aberration lens, and high bandwidth optical fibers1)-3) etc. Nowadays, most of practically used GRIN material are made by inorganic materials. On the other hand, it has been reported that the GRIN material can be synthesized by organic material more easily and mildly than inorganic materials4). Regardless of the inorganic or organic materials, the GRIN materials so far have only the small size in diameter as ϕ =10 mm, which is too small to be used as eyeglasses or camera lenses.
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Xu, Xiaojie J., et Michael E. Savard. « The Preparation of Macro Axial Gradient Index Glasses for F/3 Singlet Lenses ». Dans Gradient-Index Optical Imaging Systems. Washington, D.C. : Optica Publishing Group, 1994. http://dx.doi.org/10.1364/giois.1994.gwa2.

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Macro-size axial gradient index glasses with different refractive index profiles have been produced by fusing together layers of glasses of progressively different indices of refraction. Smooth, step-free gradients are formed by controlled diffusion within and across the layers. The refractive index profiles and wavefront distortions of the lens blanks made from these materials were characterized. Different F/3 singlet lenses were designed and fabricated using these gradient glasses. The performance of these gradient lenses were tested using MTF and interferogram methods. These lenses, having only spherical surfaces, have practically no spherical aberration, and the on-axis performance reached diffraction limit. The methods of preparation of the gradient materials are discussed as well as the advantageous properties of macro gradients in optics.
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Xiuping Tao et Hongwei Xin. « Temperature-Humidity-Velocity Index for Market-size Broilers ». Dans 2003, Las Vegas, NV July 27-30, 2003. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2003. http://dx.doi.org/10.13031/2013.14094.

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Pocol, Sergiu. « Index-Based Join Size Estimation Using Adaptive Sampling ». Dans SIGMOD/PODS '21 : International Conference on Management of Data. New York, NY, USA : ACM, 2021. http://dx.doi.org/10.1145/3448016.3450572.

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Gallais, Laurent, Philippe Voarino, Jean-Yves Natoli, Mireille Commandre et Claude Amra. « Size and complex index of nanocenters : optical measurements ». Dans XXXV Annual Symposium on Optical Materials for High Power Lasers : Boulder Damage Symposium, sous la direction de Gregory J. Exarhos, Arthur H. Guenther, Norbert Kaiser, Keith L. Lewis, M. J. Soileau et Christopher J. Stolz. SPIE, 2004. http://dx.doi.org/10.1117/12.524397.

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Rodriguez, Juan, et Torsten Suel. « Exploring Size-Speed Trade-Offs in Static Index Pruning ». Dans 2018 IEEE International Conference on Big Data (Big Data). IEEE, 2018. http://dx.doi.org/10.1109/bigdata.2018.8622177.

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Bohannon, Philip, Peter Mcllroy et Rajeev Rastogi. « Main-memory index structures with fixed-size partial keys ». Dans the 2001 ACM SIGMOD international conference. New York, New York, USA : ACM Press, 2001. http://dx.doi.org/10.1145/375663.375681.

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Rapports d'organisations sur le sujet "INDEX SIZE"

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Rashad, Inas, Michael Grossman et Shin-Yi Chou. The Super Size of America : An Economic Estimation of Body Mass Index and Obesity in Adults. Cambridge, MA : National Bureau of Economic Research, août 2005. http://dx.doi.org/10.3386/w11584.

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Considine, Jennifer, Philip Galkin et Abdullah Aldayel. Global Crude Oil Storage Index : A New Benchmark for Energy Policy. King Abdullah Petroleum Studies and Research Center, septembre 2022. http://dx.doi.org/10.30573/ks--2022-mp01.

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The global oil market dwarfs other commodity markets. Its size and role in the energy and industrial value chains underscore its significant economic and geopolitical impacts. Thus, the consequences of oil price fluctuations extend far beyond the oil industry and can be viewed as a barometer of trends in the global economy. Several oil price benchmarks currently compete in the global market. The most popular ones, such as Brent or West Texas Intermediate (WTI), are backed by a sufficient supply of the underlying crude. They also meet the criteria for efficient trading, hedging and speculating — including having sufficient liquidity, developed futures markets, low transaction costs and strong institutional support.
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Chen, J. M. A New Optical Instrument for Measuring Leaf area Index Based on a Canopy Gap Size Distribution Theory. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/218506.

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Shahin, Mohamed Y., Chad Stock, Lisa Beckberger, Chao-Ming Wang et M. R. Crrovetti. Effect of Sample Unit Size and Number of Survey Distress Types on the Pavement Condition Index (PCI) for Asphalt-Surfaced Roads. Fort Belvoir, VA : Defense Technical Information Center, avril 1996. http://dx.doi.org/10.21236/ada310687.

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Ianchovichina, Elena, et Robert McDougall. Theoretical Structure of Dynamic GTAP. GTAP Technical Paper, décembre 2000. http://dx.doi.org/10.21642/gtap.tp17.

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This paper documents the foreign asset ownership and investment theory of the dynamic GTAP model (GTAP-Dyn). The new investment theory offers a disequilibrium approach to modeling endogenously international capital mobility. It permits a recursive solution procedure, a feature that allows easy implementation of dynamics into any static AGE model without imposing limitations on the model's size. The method involves treating time as a variable, not as an index. Having time as a variable allows the construction of dynamic GTAP with minimum modifications to the existing structure of GTAP, by separating the theory of static GTAP from the length of run.
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Arias, Karla, Segundo Camino-Mogro, Mariana Weiss, David Matías, Yuri Daltro, Franco Carvajal et Michelle Carvalho Metanias Hallack. Measuring the Efficiency in Energy Distribution Firms in LAC : A Service Provision and Financial Performance Approach. Inter-American Development Bank, décembre 2022. http://dx.doi.org/10.18235/0004547.

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This study identifies and analyzes the evolution of efficiency in providing services and in the financial performance of the LAC electricity distribution companies between 2014-2020. In addition, it examines firms characteristics that might be related to efficiencies, such as quality of service, corporate governance, firm size, and ownership. This paper uses a twostep procedure. First, it considers the efficiency levels and the total factor productivity (TFP) changes using the Malmquist index and breaks down the total change by relying on a nonparametric data envelopment analysis (DEA) approach. The second stage focuses on the drivers of efficiency obtained in the first stage using the Tobit technique. The main results suggest that there is no significant improvement in the levels of efficiency in the period analyzed in the energy distribution firms in LAC. When analyzing the heterogeneity of a company's efficiency, the evidence shows a relation between companies efficiency and the quality perceived by users, higher efficiency is related to better-perceived quality. Besides, companies characteristics, such as firm size, corporate governance, and ownership, are related to the heterogeneity of efficiency.
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Gwartney, James, Robert Lawson, Joshua Hall et Ryan Murphy. Economic Freedom of the World : 2022 Dataset for Researchers. Fraser Institute, 2022. http://dx.doi.org/10.53095/88975003.

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Dataset for Researchers of the Economic Freedom of the World Annual Report that measures the degree to which the policies and institutions of countries are supportive of economic freedom. The cornerstones of economic freedom are personal choice, voluntary exchange, freedom to enter markets and compete, and security of the person and privately owned property. Forty-two data points are used to construct a summary index, along with a Gender Legal Rights Adjustment to measure the extent to which women have the same level of economic freedom as men. The degree of economic freedom is measured in five broad areas: Size of Government, Legal System and Property Rights, Sound Money, Freedom to Trade Internationally, and Regulation.
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Gwartney, James, Robert Lawson, Joshua Hall et Ryan Murphy. Economic Freedom of the World : 2022 Dataset by Country. Fraser Institute, 2022. http://dx.doi.org/10.53095/88975002.

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Dataset by Country of the Economic Freedom of the World Annual Report that measures the degree to which the policies and institutions of countries are supportive of economic freedom. The cornerstones of economic freedom are personal choice, voluntary exchange, freedom to enter markets and compete, and security of the person and privately owned property. Forty-two data points are used to construct a summary index, along with a Gender Legal Rights Adjustment to measure the extent to which women have the same level of economic freedom as men. The degree of economic freedom is measured in five broad areas: Size of Government, Legal System and Property Rights, Sound Money, Freedom to Trade Internationally, and Regulation.
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Leis, Sherry, et Lloyd Morrison. Plant community trends at Tallgrass Prairie National Preserve : 1998–2018. National Park Service, octobre 2022. http://dx.doi.org/10.36967/2294512.

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The Heartland Inventory and Monitoring Network monitors plant communities at Tallgrass Prairie National Preserve and evaluates a variety of environmental variables that affect vegetation patterns, including climate and ecological disturbances such as fire and grazing. Here we report on 2002–2018 trends in management actions (fire and grazing) and key plant community indicators. Temperature has increased over the past 50 years in the region. Precipitation and a standardized precipitation-evapotranspiration index included a high degree of interannual variability and did not demonstrate directional change. We documented a decline in disturbance intensity (i.e., less frequent prescribed fire and lower stocking rates) since 2006. A preserve goal is to maintain 30 to 60% of the area as bare ground (soil and rock) for ideal greater prairie-chicken habitat. Bare areas have been in decline and minimally meet the goal preserve wide. Bare areas vary by pasture and year, with bare areas exceeding the threshold in earlier years and Big Pasture and Red House Pasture falling short in some recent years. Although the preserve-scale mean minimally met the objective, there was a great deal of heterogeneity across monitoring sites. Litter cover and depth were greater than ecological recommendations for the greater prairie-chicken, especially in 2018. Litter depth demonstrated a great deal of variability and included deep litter. Woody plants were targeted to remain below 5% cover. Preserve- and pasture-scale cover means were well below this threshold but are increasing. Species richness on a per site basis (alpha diversity) and preserve-wide richness (gamma diversity) showed no apparent directional change when corrected for differences in sample size. Comparison of native species composition between 2002 and 2018 revealed a 36.9% difference in the Sørensen Index, although observer error accounted for almost 2/3 of this apparent change. The preserve continues to have characteristic tallgrass prairie species, and nonnative species continue to be low. Similar to targeted invasive plant monitoring, we found the target species Kentucky bluegrass to be below park thresholds. Continued evaluation of fire frequency and grazing intensity will be critical to achieving ecological goals including conserving the greater prairie-chicken. Development of a grazing plan may assist with prescribing stocking rates that are consistent with the preserve’s ecological and cultural objectives and could include alternative herbivores, such as goats or expansion of bison.
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Rosse, Anine. Stream channel monitoring for Wind Cave National Park 2021 Data report. National Park Service, janvier 2023. http://dx.doi.org/10.36967/2296623.

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The Northern Great Plains Inventory and Monitoring Network (NGPN) began stream channel monitoring in Highland Creek at Wind Cave National Park (WICA) in 2021. This data report summarizes the data collected during the 2021 season pertaining to watershed, reach, and physical habitat. After data are collected for at least four cycles, trends may be reported. This report covers three main areas: 1) Reporting on upland channel characteristics data that may affect habitat such as: land cover, drainage area, and total stream length; 2) Reporting of geomorphic dimensions such as: channel widths, bank angles, vegetative cover, reach slope, measures of bank stability; and 3) Determining physical habitat characteristics such as: size and distribution of bed sediment, large woody debris, and canopy cover. Indices, benchmarks, and other studies are provided in the table for informational purposes to help put Highland Creek’s measurements in context but should not be considered as a reference condition. Upland characteristics of the watershed indicate high natural land use cover (forest, grassland, and shrubland) with little development in the area. Reach characteristics include bank cover, heights, bank stability index, and vegetative cover. In addition to animal-induced erosion of the banks, bank sloughing and widening are occurring. Angles are steep, and there are some sandy banks that are unstable. When plots are revisited in three years, there will be greater understanding of the processes at play and the condition of the stream. Physical characteristics include median particle size, percentage fine substrate, geomorphic units, and canopy cover. Gravel substrate still covers much of the stream; there are wide meanders in the stream bed; and a variety of geomorphic channel units (pool, riffle, run) occur in the creek all of which are indicators of healthy habitat. While there is an absence of large woody debris and canopy cover is low, many grassland streams in good condition can have similar characteristics. More data are needed to fully assess those components and determine a suitable reference condition that can be used to later assess the status and trends of Highland Creek. The reach data contained in this report are specific to a short 150-m segment of Highland Creek and cannot be extrapolated to conditions elsewhere in the creek or to the park in general. Bank erosion and bank instability were observed along the majority of transects at site WICA SCM 001.
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