Journal articles: 'QUOTE CORRETTE'

1

O'Beirne, Tracy. "Correct Quote About Salary." Journal of Nursing Scholarship 36, no. 1 (March 2004): 4–5. http://dx.doi.org/10.1111/j.1547-5069.2004.4003_7.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Berman, Sheri. "The Vain Hope for "Correct" Timing." Journal of Democracy 18, no. 3 (2007): 14–17. http://dx.doi.org/10.1353/jod.2007.0039.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Peters, D. L. "Comment on "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013)." Hydrology and Earth System Sciences Discussions 11, no. 3 (March 20, 2014): 3137–53. http://dx.doi.org/10.5194/hessd-11-3137-2014.

Full text

Abstract:

Abstract. This comment paper addresses data and analysis issues in a paper entitled "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013). Analyses of observed and naturalized lake level data for Lake Athabasca are redone in this comment paper with corrected hydrometric data to provide northerners and researchers with the correct information for environmental assessments.

APA, Harvard, Vancouver, ISO, and other styles

4

Williams, Daniel H. "Politically Correct in Milan: A Reply to "Diehard Homoians and the Election of Ambrose"." Journal of Early Christian Studies 5, no. 3 (1997): 441–46. http://dx.doi.org/10.1353/earl.1997.0074.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Childs, Claire. "Canny good, or quite canny?" English World-Wide 37, no. 3 (October 14, 2016): 238–66. http://dx.doi.org/10.1075/eww.37.3.01chi.

Full text

Abstract:

The word canny has long been associated with the dialects of the North East of England, most typically in its adjectival sense. However, it has four distinct functions (adjective, adverb, intensifier and modifier in quantifying expressions), which this paper tracks in a diachronic speech corpus. Although the intensifier (e.g. it’s canny good) is documented in the Survey of English Dialects (Upton, Parry and Widowson 1994), it appears in the corpus later than expected with the profile of an incoming form. Results from a judgement task corroborate the corpus trends and show that people’s intuitions about intensifier canny correlate with age as well as the semantics and position of the following adjective, in such a way that shows the intensifier is not fully delexicalised. The present research highlights the value of combining production and perception data in establishing how the origins of a linguistic item affect its distribution in its new function.

APA, Harvard, Vancouver, ISO, and other styles

6

Nakai, H., and Y. Kamide. "Substorm-associated large-scale magnetic field changes in the magnetotail: a prerequisite for "magnetotail deflation" events." Annales Geophysicae 21, no. 4 (April 30, 2003): 869–79. http://dx.doi.org/10.5194/angeo-21-869-2003.

Full text

Abstract:

Abstract. An attempt is made to search for a critical condition in the lobe magnetic field to initiate large-scale magnetic field changes associated with substorm expansions. Using data from ISEE-1 for 1978, sudden decreases in the lobe magnetic field accompanied by magnetic field dipolarizations are identified. In this study, such events are designated as the magnetotail deflation. The magnetic field component parallel to the equatorial plane, BE , is normalized to a fixed geocentric distance, BEN , and is corrected for the compression effect of the solar wind dynamic pres-sure, BENC . It is shown that the BENC value just prior to a magnetotail deflation correlates well with the Dst index; BENC = 37.5 - 0.217 Dst0, where Dst0 denotes the Dst value corrected for the solar wind dynamic pressure. This regression function appears to delineate the upper limit of BENC values, when they are sorted by the Dst0 index. On the basis of this finding it is suggested that a prerequisite condition for magnetotail deflations must exist in the magnetosphere.Key words. Magnetospheric physics (magnetotail; current systems; storms and substorms)

APA, Harvard, Vancouver, ISO, and other styles

7

Peters, D. L. "Comment on "Streamflow input to Lake Athabasca, Canada" by Rasouli et al. (2013)." Hydrology and Earth System Sciences 18, no. 9 (September 12, 2014): 3615–21. http://dx.doi.org/10.5194/hess-18-3615-2014.

Full text

Abstract:

Abstract. This comment paper addresses data and analysis issues in a paper entitled "Streamflow Input to Lake Athabasca, Canada" by Rasouli et al. (2013). Analyses of observed and naturalized lake level data for Lake Athabasca are redone in this comment paper with corrected hydrometric data to provide northerners and researchers with the correct information for environmental assessments. The comment paper also highlights the importance of including in the analysis not only direct inflows to Lake Athabasca, but also the hydraulic influences on lake outflow, especially when meaningful future projections of lake levels are required for water management.

APA, Harvard, Vancouver, ISO, and other styles

8

Maynard, Patrick. ""What Will Surprise You Most": Self-Regulating Systems and Problems of Correct Use in Plato's Republic." Journal of the History of Philosophy 38, no. 1 (2000): 1–26. http://dx.doi.org/10.1353/hph.2005.0098.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Nicholson, D. P. "Comment on "Consistent calculation of aquatic gross production from oxygen triple isotope measurements" by Kaiser (2011)." Biogeosciences Discussions 8, no. 4 (July 18, 2011): 7127–39. http://dx.doi.org/10.5194/bgd-8-7127-2011.

Full text

Abstract:

Abstract. Kaiser (2011) has introduced an improved method for calculating gross productivity from the triple isotopic composition of dissolved oxygen in aquatic systems. His equation avoids approximations of previous methodologies, and also accounts for additional physical processes such as kinetic fractionation during invasion and evasion at the air-sea interface. However, when comparing his new approach to previous methods, Kaiser inconsistently defines the biological end-member with the result of overestimating the degree to which the various approaches of previous studies diverge. In particular, for his base case, Kaiser assigns a 17O excess to the product of photosynthesis that is too low, resulting in his result being ~30 % too high when compared to previous equations. When this is corrected, I find that Kaiser's equations are consistent with all previous study methodologies within about ±20 % for realistic conditions of metabolic balance (f) and gross productivity (g). A methodological bias of ±20 % is of similar magnitude to current uncertainty in the wind-speed dependence of the air-sea gas transfer velocity, k, which directly impacts calculated gross productivity rates as well. While previous results could and should be revisited and corrected using the proposed improved equations, the magnitude of such corrections may be much less than implied by Kaiser.

APA, Harvard, Vancouver, ISO, and other styles

10

Bellaire, S., J. B. Jamieson, and C. Fierz. "Corrigendum to "Forcing the snow-cover model SNOWPACK with forecasted weather data" published in The Cryosphere, 5, 1115–1125, 2011." Cryosphere 7, no. 2 (March 25, 2013): 511–13. http://dx.doi.org/10.5194/tc-7-511-2013.

Full text

Abstract:

Abstract. This corrigendum is written to correct a misinterpretation of data used for the analysis of the paper entitled "Forcing the snow-cover model SNOWPACK with forecasted weather data". In the following we will provide corrected figures, equations and tables where applicable.

APA, Harvard, Vancouver, ISO, and other styles

11

Nicholson, D. P. "Comment on: "Technical note: Consistent calculation of aquatic gross production from oxygen triple isotope measurements" by Kaiser (2011)." Biogeosciences 8, no. 10 (October 27, 2011): 2993–97. http://dx.doi.org/10.5194/bg-8-2993-2011.

Full text

Abstract:

Abstract. Kaiser (2011) has introduced an improved method for calculating gross productivity from the triple isotopic composition of dissolved oxygen in aquatic systems. His equation avoids approximations of previous methodologies, and also accounts for additional physical processes such as kinetic fractionation during invasion and evasion at the air-sea interface. However, when comparing his new approach to previous methods, Kaiser inconsistently defines the biological end-member with the result of overestimating the degree to which the various approaches of previous studies diverge. In particular, for his base case, Kaiser assigns a 17O excess to the product of photosynthesis (17δP) that is too low, resulting in his result being ~30 % too high when compared to previous equations. When this is corrected, I find that Kaiser's equations are consistent with all previous study methodologies within about ±20 % for realistic conditions of metabolic balance (f) and gross productivity (g). A methodological bias of ±20 % is of similar magnitude to current uncertainty in the wind-speed dependence of the air-sea gas transfer velocity, k, which directly impacts calculated gross productivity rates as well. While previous results could and should be revisited and corrected using the proposed improved equations, the magnitude of such corrections may be much less than implied by Kaiser.

APA, Harvard, Vancouver, ISO, and other styles

12

Birnbrauer, Jay S. "Two Factors are Quite Enough: A Response to Molloy (1984)." Behaviour Change 2, no. 1 (March 1985): 2–5. http://dx.doi.org/10.1017/s0813483900008731.

Full text

Abstract:

External variables and measurable aspects of human behaviour, biology, mind, emotions, and whatever else one cares to name are all that psychologists and other professionals concerned with behaviour change have to respond to and manipulate. A two factor model thus is proposed to maintain attention and action on goals and methods. In the course of arguing this position, some common misconceptions of the operant model are corrected.

APA, Harvard, Vancouver, ISO, and other styles

13

Hodell, D. A., L. Lourens, D. A. V. Stow, J. Hernández-Molina, and C. A. Alvarez Zarikian. "The "Shackleton Site" (IODP Site U1385) on the Iberian Margin." Scientific Drilling 16 (November 5, 2013): 13–19. http://dx.doi.org/10.5194/sd-16-13-2013.

Full text

Abstract:

Abstract. Nick Shackleton's research on piston cores from the Iberian margin highlighted the importance of this region for providing high-fidelity records of millennial-scale climate variability, and for correlating climate events from the marine environment to polar ice cores and European terrestrial sequences. During the Integrated Ocean Drilling Program (IODP) Expedition 339, we sought to extend the Iberian margin sediment record by drilling with the D/V JOIDES Resolution. Five holes were cored at Site U1385 using the advanced piston corer (APC) system to a maximum depth of ~155.9 m below sea floor (m b.s.f.). Immediately after the expedition, cores from all holes were analyzed by core scanning X-ray fluorescence (XRF) at 1 cm spatial resolution. Ca/Ti data were used to accurately correlate from hole-to-hole and construct a composite spliced section, containing no gaps or disturbed intervals to 166.5 m composite depth (mcd). A low-resolution (20 cm sample spacing) oxygen isotope record confirms that Site U1385 contains a continuous record of hemipelagic sedimentation from the Holocene to 1.43 Ma (Marine Isotope Stage 46). The sediment profile at Site U1385 extends across the middle Pleistocene transition (MPT) with sedimentation rates averaging ~10 cm kyr−1. Strong precession cycles in colour and elemental XRF signals provide a powerful tool for developing an orbitally tuned reference timescale. Site U1385 is likely to become an important type section for marine–ice–terrestrial core correlations and the study of orbital- and millennial-scale climate variability.

APA, Harvard, Vancouver, ISO, and other styles

14

Miller, John H., and Saul M. Bernstein. "The Roentgenographic Appearance of the “Corrected Clubfoot”." Foot & Ankle 6, no. 4 (February 1986): 177–83. http://dx.doi.org/10.1177/107110078600600402.

Full text

Abstract:

Roentgenographic changes associated with a corrected clubfoot may not be readily apparent. In some individuals with minimal residual deformity, these roentgenographic changes are quite subtle. The roentgenographic abnormalities of the corrected clubfoot are described.

APA, Harvard, Vancouver, ISO, and other styles

15

Barnard, J. C., E. I. Kassianov, T. P. Ackerman, K. Johnson, B. Zuberi, L. T. Molina, and M. J. Molina. "Estimation of a "radiatively correct" black carbon specific absorption during the Mexico City Metropolitan Area (MCMA) 2003 field campaign." Atmospheric Chemistry and Physics 7, no. 6 (March 27, 2007): 1645–55. http://dx.doi.org/10.5194/acp-7-1645-2007.

Full text

Abstract:

Abstract. During the Mexico City Metropolitan Area (MCMA) field campaign of 2003, measurements of the shortwave radiation field allowed the inference of the black carbon (BC) specific absorption, αλ, defined as the monochromatic absorption cross section per unit mass (with units of m2/g). The averaged values of αλ derived from the method here are either 8.9 m2/g or 8.2 m2/g at 500 nm, depending upon the physical and optical parameters assumed for BC. These results are reasonably consistent with those of Schuster et al. (2005), 9.5 m2/g, and Baumgartner et al. (2002), 7.0 m2/g, both measured at 550 nm. The αλ values reported in this paper should only be considered effective, "radiatively correct" values because when used in radiative transfer calculations the calculated irradiances match the measured irradiances at 500 nm. The specific absorption so defined can assume a wide range of values, depending upon: (1) the assumptions made prior to the retrieval (e.g., shell/core aerosol configuration), and (2) values chosen for BC density and refractive index. The range of possible values is large, corresponding to a "worst case" uncertainty of about ±70%, assuming that all errors are additive and of the same sign so that no error cancellation occurs.

APA, Harvard, Vancouver, ISO, and other styles

16

Akers, Katherine G. "Correction to “Social justice and the medical librarian” on 107(3) July, page 302. DOI: http://dx.doi.org/10.5195/jmla.2019.712." Journal of the Medical Library Association 107, no. 4 (October 1, 2019): 638. http://dx.doi.org/10.5195/jmla.2019.814.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Kang, Alice J., and Aili Mari Tripp. "Coalitions Matter: Citizenship, Women, and Quota Adoption in Africa." Perspectives on Politics 16, no. 1 (February 7, 2018): 73–91. http://dx.doi.org/10.1017/s1537592717002225.

Full text

Abstract:

We provide new theory and evidence of the role of domestic women’s coalitions in the adoption of gender quotas. Previous research has shown the importance of women’s movements to policy change. We show that specific types of mobilization, often multiethnic in character, are a more precise way of describing these influences. Using a new dataset of coalitions in 50 countries in Africa (1989–2014), we first examine where coalitions are likely to emerge. Controlling for factors that correlate with their formation, we find that when domestic women’s organizations form a coalition for quotas, governments are more likely to adopt them and do so more quickly. This correlation holds when controlling for international aid, involvement of international women’s movements, and whether countries recently emerged out of major armed conflict, complementing recent scholarship that highlights global influences. A comparative case study of the adoption of a gender quota in Senegal and non-adoption in Benin helps illustrate the nuances of the theory.

APA, Harvard, Vancouver, ISO, and other styles

18

Brugnara, Y., R. Auchmann, S. Brönnimann, R. J. Allan, I. Auer, M. Barriendos, H. Bergström, et al. "A collection of sub-daily pressure and temperature observations for the early instrumental period with a focus on the "year without a summer" 1816." Climate of the Past Discussions 11, no. 3 (May 13, 2015): 1741–94. http://dx.doi.org/10.5194/cpd-11-1741-2015.

Full text

Abstract:

Abstract. The eruption of Mount Tambora (Indonesia) in April 1815 is the largest documented volcanic eruption in history. It caused a large global cooling during the following year, felt particularly in parts of Europe and North America, where the year 1816 became known as the "year without a summer". This paper describes an effort made to collect surface meteorological observations from the early instrumental period, with a focus on the years immediately following the eruption (1815–1817). Although the collection aimed in particular at pressure observations, correspondent temperature observations were also recovered. Some of the series had already been described in the literature, but a large part of the data, recently digitised from original weather diaries and contemporary magazines and newspapers, is presented here for the first time. The collection puts together more than fifty sub-daily series from land observatories in Europe and North America, and from ships in the tropics. The pressure observations have been corrected for temperature and gravity and reduced to mean sea level, moreover an additional statistical correction was applied to take into account common error sources in mercury barometers. To assess the reliability of the corrected dataset, the variance of the pressure observations is compared with modern climatologies and single observations are used for synoptic analyses of three case studies in Europe. All raw observations will be made available to the scientific community in the International Surface Pressure Databank.

APA, Harvard, Vancouver, ISO, and other styles

19

Brugnara, Y., R. Auchmann, S. Brönnimann, R. J. Allan, I. Auer, M. Barriendos, H. Bergström, et al. "A collection of sub-daily pressure and temperature observations for the early instrumental period with a focus on the "year without a summer" 1816." Climate of the Past 11, no. 8 (August 6, 2015): 1027–47. http://dx.doi.org/10.5194/cp-11-1027-2015.

Full text

Abstract:

Abstract. The eruption of Mount Tambora (Indonesia) in April 1815 is the largest documented volcanic eruption in history. It is associated with a large global cooling during the following year, felt particularly in parts of Europe and North America, where the year 1816 became known as the "year without a summer". This paper describes an effort made to collect surface meteorological observations from the early instrumental period, with a focus on the years of and immediately following the eruption (1815–1817). Although the collection aimed in particular at pressure observations, correspondent temperature observations were also recovered. Some of the series had already been described in the literature, but a large part of the data, recently digitised from original weather diaries and contemporary magazines and newspapers, is presented here for the first time. The collection puts together more than 50 sub-daily series from land observatories in Europe and North America and from ships in the tropics. The pressure observations have been corrected for temperature and gravity and reduced to mean sea level. Moreover, an additional statistical correction was applied to take into account common error sources in mercury barometers. To assess the reliability of the corrected data set, the variance in the pressure observations is compared with modern climatologies, and single observations are used for synoptic analyses of three case studies in Europe. All raw observations will be made available to the scientific community in the International Surface Pressure Databank.

APA, Harvard, Vancouver, ISO, and other styles

20

AVIRAM, AMITAI. "What do corporate directors maximize? (Not quite what everybody thinks)." Journal of Institutional Economics 6, no. 1 (January 25, 2010): 47–53. http://dx.doi.org/10.1017/s1744137409990130.

Full text

Abstract:

Abstract:The agency problem at the core of corporate law stems from a chronic potential conflict of interest between directors’ self-interest and that of shareholders. Corporate law views directors’ self-interest in terms of diverting welfare to directors at the expense of shareholders. Another component of directors’ self-interest – being perceived as maximizing shareholders’ welfare – is seen not as part of the agency problem, but as part of the solution (aligning directors’ incentives with shareholders’).This is true only if taking actions that maximize shareholders’ welfare is also the optimal manner for a director to be perceived as maximizing welfare. However, directors have more appealing ways to be positively perceived. In conducting bias arbitrage, directors identify risks that shareholders over-estimate, take action to address the risk, and then take credit for the ‘lowered’ risk (i.e., shareholders’ corrected assessment of the risk).Bias arbitrage is more attractive as shareholders’ misperception of a risk increases. The opportunity to bias arbitrage thus leads directors to address highly misperceived risks instead of highly remediable risks.

APA, Harvard, Vancouver, ISO, and other styles

21

Hebbar, Shripad, Mehak Misha, and Lavanya Rai. "Significance of Maternal and Cord Blood Nucleated Red Blood Cell Count in Pregnancies Complicated by Preeclampsia." Journal of Pregnancy 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/496416.

Full text

Abstract:

Objectives.To evaluate the effect of preeclampsia on the cord blood and maternal NRBC count and to correlate NRBC count and neonatal outcome in preeclampsia and control groups.Study Design.This is a prospective case control observational study.Patients and Methods.Maternal and cord blood NRBC counts were studied in 50 preeclamptic women and 50 healthy pregnant women. Using automated cell counter total leucocyte count was obtained and peripheral smear was prepared to obtain NRBC count. Corrected WBC count and NRBC count/100 leucocytes in maternal venous blood and in cord blood were compared between the 2 groups.Results.No significant differences were found in corrected WBC count in maternal and cord blood in cases and controls. Significant differences were found in mean cord blood NRBC count in preeclampsia and control groups (40.0±85.1and5.9±6.3,P=0.006). The mean maternal NRBC count in two groups was2.4±9.0and0.8±1.5, respectively (P=0.214). Cord blood NRBC count cut off value ≤13 could rule out adverse neonatal outcome with a sensitivity of 63% and specificity of 89%.Conclusion.Cord blood NRBC are significantly raised in preeclampsia. Neonates with elevated cord blood NRBC counts are more likely to have IUGR, low birth weight, neonatal ICU admission, respiratory distress syndrome, and assisted ventilation. Below the count of 13/100 leucocytes, adverse neonatal outcome is quite less likely.

APA, Harvard, Vancouver, ISO, and other styles

22

Raveloson, A., R. Wang, R. Kind, L. Ceranna, and X. Yuan. "Brief communication "Seismic and acoustic-gravity signals from the source of the 2004 Indian Ocean Tsunami"." Natural Hazards and Earth System Sciences 12, no. 2 (February 9, 2012): 287–94. http://dx.doi.org/10.5194/nhess-12-287-2012.

Full text

Abstract:

Abstract. The great Sumatra-Andaman earthquake of 26 December 2004 caused seismic waves propagating through the solid Earth, tsunami waves propagating through the ocean and infrasound or acoustic-gravity waves propagating through the atmosphere. Since the infrasound wave travels faster than its associated tsunami, it is for warning purposes very intriguing to study the possibility of infrasound generation directly at the earthquake source. Garces et al. (2005) and Le Pichon et al. (2005) emphasized that infrasound was generated by mountainous islands near the epicenter and by tsunami propagation along the continental shelf to the Bay of Bengal. Mikumo et al. (2008) concluded from the analysis of travel times and amplitudes of first arriving acoustic-gravity waves with periods of about 400–700 s that these waves are caused by coseismic motion of the sea surface mainly to the west of the Nicobar islands in the open seas. We reanalyzed the acoustic-gravity waves and corrected the first arrival times of Mikumo et al. (2008) by up to 20 min. We found the source of the first arriving acoustic-gravity wave about 300 km to the north of the US Geological Survey earthquake epicenter. This confirms the result of Mikumo et al. (2008) that sea level changes at the earthquake source cause long period acoustic-gravity waves, which indicate that a tsunami was generated. Therefore, a denser local network of infrasound stations may be helpful for tsunami warnings, not only for very large earthquakes.

APA, Harvard, Vancouver, ISO, and other styles

23

Schwarz, Björn, Björn Wissmach, and Gabriele Kaiser. "“Last curves not quite correct”: diagnostic competences of future teachers with regard to modelling and graphical representations." ZDM 40, no. 5 (November 6, 2008): 777–90. http://dx.doi.org/10.1007/s11858-008-0158-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Wright, Jonathan H. "Term Premia and Inflation Uncertainty: Empirical Evidence from an International Panel Dataset: Reply." American Economic Review 104, no. 1 (January 1, 2014): 338–41. http://dx.doi.org/10.1257/aer.104.1.338.

Full text

Abstract:

Bauer, Rudebusch, and Wu (2014) advocate the use of bias-corrected estimates in their comment on Wright (2011). Econometric estimation of a macro-finance VAR provides quite imprecise estimates of future short-term interest rates. Nonetheless, comparison with survey responses indicates that the proposed bias-corrected point estimates are less plausible than their maximum-likelihood counterparts. (JEL E31, E43, E52, G12, H63)

APA, Harvard, Vancouver, ISO, and other styles

25

Taiwo Olarinre, Oluwaleye,, Kolapo, Funso Tajudeen (PhD), and Ajayi, Foluso Isaac. "IMPACT OF CAPITAL STRUCTURE ON THE PERFORMANCE OF QUOTED INSURANCE FIRMS IN NIGERIA." International Journal of Advanced Research 9, no. 07 (July 31, 2021): 324–34. http://dx.doi.org/10.21474/ijar01/13131.

Full text

Abstract:

Evidence from the past studies revealed that capital structure has an impact on the firm performance. This research appraises the impact of capital structure on the performance of quoted life insurance companies in Nigeria from 2010 to 2019. The researchers used the panel cointegration model, autoregressive dynamic lag error correction model and pair wise granger causality test to measure the relationship among the variables. The study revealed that capital structure and firm performance has a long-run relationshipand 81% long run disequilibrium is corrected within a year. It was also apparent that there is a significant short run relationship between liquidity of life insurance and return on asset. The Granger causality outcome also shows that bidirectional causality exists between firm size (SIZE) and profitability (ROA) in the short run. We conclude that a large size of life insurance firm has more scope to make more profit in Nigeria context within the study period. The study recommended that to maximize firmÃƒÂƒÃ‚Â¢ÃƒÂ‚Ã‚Â€ÃƒÂ‚Ã‚Â™s performance managers must endeavor to obtain and maintain an optimum capital structure level among others.

APA, Harvard, Vancouver, ISO, and other styles

26

Bierzyński, A., and K. Pawłowski. "Helix-coil transition theories. Are they correct?" Acta Biochimica Polonica 44, no. 3 (September 30, 1997): 423–32. http://dx.doi.org/10.18388/abp.1997_4394.

Full text

Abstract:

Principles of contemporary theoretical description of alpha-helix formation by polypeptide chains in water solution are shortly presented and critically discussed. The theory treats the unfolded state of a peptide as "random coil"--an ideal conformation quite distant from reality. We suggest that for this reason the helix propagation parameters of amino-acid residues, determined using series of model peptides with different sequential patterns, are not the same. Interpretation of the so called "nucleation parameter" is erroneous. In fact, it is not determined by the helix nucleation process but rather by a specific situation of residues at the helix N- and C-termini, and it strongly depends on solvation of their NH and CO groups, respectively. Consequently, helical segments with terminal sequences dominated by residues with strongly hydrophobic, bulky side chains can be very unstable. We postulate that an unexpectedly high stability of very short, pre-nucleated helices studied by us arises from a "helix end separation effect": separated helix termini are better solvated than when they overlap each other. Because of this effect, helix initiation may be much more difficult than predicted by the theoretical "helix nucleation parameters".

APA, Harvard, Vancouver, ISO, and other styles

27

Batson, Philip E. "Motion of Gold Atoms on Carbon in the Aberration-Corrected STEM." Microscopy and Microanalysis 14, no. 1 (December 21, 2007): 89–97. http://dx.doi.org/10.1017/s1431927608080197.

Full text

Abstract:

The movement of heavy atoms on a thin carbon substrate is readily observed using a sub-Ångstrom electron probe. The observed movement is consistent with an electron beam activation mechanism whereby atoms are occasionally detached from bonding sites, allowing rapid diffusion to new sites that may be quite far from the original. The bonding sites are most often observed to lie at defects, steps, and other asperities in the substrate. Formation of three-dimensional clusters can occur during diffusion of several isolated atoms. Coalescence and dissolution of larger clusters and islands both occur under varying observation conditions, but island coalescence appears most probable for islands that are greater than 2 nm in size.

APA, Harvard, Vancouver, ISO, and other styles

28

M, Jacob, and Winfried Dolderer. "België vernietigen. Het kronkelpad van een citaat." WT. Tijdschrift over de geschiedenis van de Vlaamse beweging 74, no. 2 (June 17, 2015): 103–11. http://dx.doi.org/10.21825/wt.v74i2.12095.

Full text

Abstract:

“Wij moeten België misschien opgeven, maar het vernietigen door de Vlamingen”, zou gouverneur-generaal Moritz von Bissing in december 1914 in een gesprek met de Alduitser Theodor Reismann-Grone gezegd hebben. Dat lezen we in tal van werken over de Flamenpolitik, onder meer van Lode Wils, Sophie De Schaepdrijver en Bruno Yammine. De toeschrijving van de uitspraak aan de gouverneur-generaal klopt evenwel niet, zoals blijkt uit het dagboek van Reismann-Grone waar de ontmoeting wordt beschreven. Verantwoordelijk voor de verwarring was de Nederlandse historicus Lammert Buning die in 1975 op basis van de aantekeningen van Reismann-Grone twee opstellen publiceerde. In het eerste legde hij het citaat over de vernietiging van België de gouverneur-generaaal, in het tweede – misschien bij wijze van stilzwijgende correctie – de Alduitser in de mond. De slordigheid van Buning heeft zodoende haar sporen achtergelaten in veertig jaar Vlaamse geschiedschrijving.________ To destroy Belgium: The winding road of a quotationIn a conversation with the ultra-nationalist Theodor Reismann-Grone in December 1914, Governor-general Moritz von Bissing is alleged to have made the following statement: “We may have to give up Belgium, but will destroy it by means of the Flemish.” This is quoted in a number of works about the Flamenpolitik, including those by Lode Wils, Sophie de Schaepdrijver and Bruno Yammine. However, the attribution of the statement to the Governor-general is incorrect, as is demonstrated by Reismann-Grone’s diary in which he describes the encounter. The Dutch historian Lammert Buning who published two essays in 1975, based on the notes by Reismann-Grone, is responsible for the confusion. In his first essay he attributed the quote about the destruction of Belgium to the Governor-general, whilst in his second essay – perhaps by means of a tacit correction – he attributed the quote to the ultra-nationalist. Buning’s carelessness thus left its mark on forty years of Flemish historiography.

APA, Harvard, Vancouver, ISO, and other styles

29

Raju, Nambury S., and Paul A. Brand. "Determining the Significance of Correlations Corrected for Unreliability and Range Restriction." Applied Psychological Measurement 27, no. 1 (January 2003): 52–71. http://dx.doi.org/10.1177/0146621602239476.

Full text

Abstract:

A new asymptotic formula for estimating the sampling variance of a correlation coefficient corrected for unreliability and range restriction was proposed. A Monte Carlo assessment of the new sampling variance formula has resulted in the following conclusions. First, the formula-based (analytical) sampling variances were very close to the empirically derived sampling variances based on 5,000 replications. Second, the sampling variance formula was quite robust against committing Type I errors. Third, the statistical power was low to moderate in distinguishing between two unattenuated and unrestricted population correlations. Fourth, the new formula produced smaller sampling variances; was closer to nominal alpha levels; and was more powerful when sample size increased, when the population correlation coefficient increased, when range restriction was less severe, and when both the criterion and predictor reliabilities increased.

APA, Harvard, Vancouver, ISO, and other styles

30

Rousseau, D. D., M. Ghil, G. Kukla, A. Sima, P. Antoine, M. Fuchs, C. Hatté, F. Lagroix, M. Debret, and O. Moine. "Major dust events in Europe during marine isotope stage 5 (130–74 ka): a climatic interpretation of the "markers"." Climate of the Past Discussions 9, no. 3 (May 2, 2013): 2235–76. http://dx.doi.org/10.5194/cpd-9-2235-2013.

Full text

Abstract:

Abstract. At present, major dust storms are occurring at mid-latitudes in the Middle East and Asia, as well as at low latitudes in northern Africa and in Australia. Western Europe, though, does not experience such dramatic climate events, except for some African dust reaching it from the Sahara. This modern situation is of particular interest, in the context of future climate projections, since the present interglacial is usually interpreted, in this context, as an analog of the warm Eemian interval. European terrestrial records show, however, major dust events during the penultimate interglacial and early glacial. These events are easily observed in loess records by their whitish-color deposits, which lie above and below dark chernozem paleosols in Central European records of Marine Isotope Stage (MIS) 5 age. We describe here the base of the Dolni Vestonice (DV) loess sequence, Czech Republic, as the reference of such records. The dust is deposited during intervals that are characterized by poor vegetation – manifested by high δ13C values and low magnetic susceptibility – while the fine sand and clay in the deposits shows grain sizes that are clearly different from the overlying pleniglacial loess deposits. Some of these dust events have been previously described as "Markers" or Marker Silts (MS) by one of us (G. Kukla), and are dated at about 111–109 and 93–92 ka, with a third and last one slightly visible at about 75–73 ka. Other events correspond to the loess material of Kukla's cycles, and are described as eolian silts (ES); they are observed in the same DV sequence and are dated at about 106–105, 88–86, and 78.5–77 ka. The fine eolian deposits mentioned above, MS as well as ES, correspond to short events that lasted about 2 ka; they are synchronous with re-advances of the polar front over the North Atlantic, as observed in marine sediment cores. These deposits also correlate with important changes observed in European vegetation. Some ES and MS events appear to be coeval with significant dust peaks recorded in the Greenland ice cores, while others are not. This decoupling between the European eolian and Greenland dust depositions is of considerable interest, as it differs from the fully glacial situation, in which the Eurasian loess sedimentation mimics the Greenland dust record. Previous field observations supported an interpretation of MS events as caused by continental dust storms. We show here, by a comparison with speleothems of the same age found in the northern Alps, that different atmospheric-circulation modes seem to be responsible for the two categories of dust events, MS vs. ES.

APA, Harvard, Vancouver, ISO, and other styles

31

Donovan, John J. "Using Quantitative Iteration to Correct for Pathological Spectral Interferences." Microscopy and Microanalysis 4, S2 (July 1998): 222–23. http://dx.doi.org/10.1017/s1431927600021231.

Full text

Abstract:

A number of problematic analytical situations are known to exist in electron probe microanalysis (EPMA) where characteristic x-ray spectral overlaps are not only severe, but are also of the “self-interfering” or “cascade” variety. The “self-interfering” variety is exemplified by the innocuous Ba Lα ↔ Ti Kα; to the fearsome Pb Lα↔As Kα binaries, while “cascade” interferences are often seen among the transition metal series as in Ti Kβ → V Kα - V Kα Cr Kα or as seen with a secondary fluorescence interference effect as in Ni K ⇒ Fe Kα - Fe Kβ → Co Kα. Unlike simple interferences of the type Mn Kβ → Fe Kα, both of these types of spectral interferences are often quite troublesome for the analyst to correct for, especially for Si(Li) and Ge energy dispersive spectrometers (EDS) where the analytical peaks are often so overlapped as to prevent graphical deconvolution, and even for the higher resolution wavelength dispersive spectrometers (WDS) along with the yet to come bolometric energy dispersive detectors (based on projected resolution), the task can still be formidable.

APA, Harvard, Vancouver, ISO, and other styles

32

Rousseau, D. D., M. Ghil, G. Kukla, A. Sima, P. Antoine, M. Fuchs, C. Hatté, F. Lagroix, M. Debret, and O. Moine. "Major dust events in Europe during marine isotope stage 5 (130–74 ka): a climatic interpretation of the "markers"." Climate of the Past 9, no. 5 (September 26, 2013): 2213–30. http://dx.doi.org/10.5194/cp-9-2213-2013.

Full text

Abstract:

Abstract. At present, major dust storms are occurring at mid-latitudes in the Middle East and Asia, as well as at low latitudes in Northern Africa and in Australia. Western Europe, though, does not experience such dramatic climate events, except for some African dust reaching it from the Sahara. This modern situation is of particular interest, in the context of future climate projections, since the present interglacial is usually interpreted, in this context, as an analog of the warm Eemian interval. European terrestrial records show, however, major dust events during the penultimate interglacial and early glacial. These events are easily observed in loess records by their whitish-color deposits, which lie above and below dark chernozem paleosols in Central European records of Marine Isotope Stage (MIS) 5 age. We describe here the base of the Dolni Vestonice (DV) loess sequence, Czech Republic, as the reference of such records. The dust is deposited during intervals that are characterized by poor vegetation – manifested by high δ13C values and low magnetic susceptibility – while the fine sand and clay in the deposits shows grain sizes that are clearly different from the overlying pleniglacial loess deposits. Some of these dust events have been previously described as "Markers" or Marker Silts (MS) by one of us (G. Kukla), and are dated at about 111–109 ka and 93–92 ka, with a third and last one slightly visible at about 75–73 ka. Other events correspond to the loess material of Kukla's cycles, and are described as eolian silts (ES); they are observed in the same DV sequence and are dated at about 106–105 ka, 88–86 ka, and 78.5–77 ka. These dates are determined by considering the OSL ages with their errors measured on the studied sequence, and the comparison with Greenland ice-core and European speleothem chronologies. The fine eolian deposits mentioned above, MS as well as ES, correspond to short events that lasted about 2 ka; they are synchronous with re-advances of the polar front over the North Atlantic, as observed in marine sediment cores. These deposits also correlate with important changes observed in European vegetation. Some ES and MS events appear to be coeval with significant dust peaks recorded in the Greenland ice cores, while others are not. This decoupling between the European eolian and Greenland dust depositions is of considerable interest, as it differs from the fully glacial situation, in which the Eurasian loess sedimentation mimics the Greenland dust record. Previous field observations supported an interpretation of MS events as caused by continental dust storms. We show here, by a comparison with speleothems of the same age found in the northern Alps, that different atmospheric-circulation modes seem to be responsible for the two categories of dust events, MS vs. ES.

APA, Harvard, Vancouver, ISO, and other styles

33

Gorecki, J., E. J. Dolan, R. R. Tasker, and W. Kucharczyk. "Correlation of CT and MR with Impedance Monitoring and Histopathology in Stereotactic Biopsies." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 17, no. 2 (May 1990): 184–89. http://dx.doi.org/10.1017/s0317167100030420.

Full text

Abstract:

ABSTRACT:Magnetic Resonance Imaging (MR) and Computer Assisted Tomography (CT) guided stereotaxis combined with intraoperative impedance monitoring and multiple sequential biopsies provides the opportunity to correlate the results of radiologic imaging with impedance and histopathology. The authors present the methods used and preliminary results obtained from 30 stereotactic biopsies with complete correlation in 12 cases. Impedance changes correlate accurately with lesion margins as defined by histology. CT images of enhancing lesions correlate quite closely to the histopathologic lesion margins whereas the appearance of the lesion on MR images is often larger than subsequently identified by either impedance or at pathologic examination. Impedance monitoring is a useful adjunct to stereotactic biopsy as it helps to accurately define lesion margins and can help direct the choice of biopsy sites.

APA, Harvard, Vancouver, ISO, and other styles

34

von Schacky, Clemens. "Omega-3 Fatty Acids in Pregnancy—The Case for a Target Omega-3 Index." Nutrients 12, no. 4 (March 26, 2020): 898. http://dx.doi.org/10.3390/nu12040898.

Full text

Abstract:

Scientific societies recommend increasing intake of docosahexaenoic acid (DHA) by 200 mg/day during pregnancy. However, individually, clinical events correlate quite strongly with levels of eicosapentaenoic acid (EPA) and DHA in blood, but these levels poorly correlate with amounts ingested. EPA and DHA in erythrocytes (Omega-3 Index) have a low biologic variability. If analyzed with a standardized analytical procedure (HS-Omega-3 Index®), analytical variability is low. Thus, the largest database of any fatty acid analytical method was provided. Pregnant women in Germany had a mean Omega-3 Index below the target range suggested for cardiovascular disease of 8–11%, with large interindividual variation, and quite independent of supplementation with EPA and DHA. In Germany, premature birth is a major health issue. Premature birth and other health issues of pregnant women and their offspring correlate with levels of EPA and DHA in blood and can be reduced by increasing intake of EPA and DHA, according to individual trials and pertinent meta-analyses. Very high intake or levels of EPA and DHA may also produce health issues, like bleeding, prolonged gestation, or even premature birth. While direct evidence remains to be generated, evidence from various scientific approaches supports that the target range for the Omega-3 Index of 8–11% might also pertain to pregnancy and lactation.

APA, Harvard, Vancouver, ISO, and other styles

35

Khvorostyanov, V. I., and J. A. Curry. "Comment on "Comparisons with analytical solutions from Khvorostyanov and Curry (2007) on the critical droplet radii and supersaturations of CCN with insoluble fractions" by Kokkola et al. (2008)." Atmospheric Chemistry and Physics 9, no. 16 (August 20, 2009): 6033–39. http://dx.doi.org/10.5194/acp-9-6033-2009.

Full text

Abstract:

Abstract. Analytical solutions for the critical radii and supersaturations of the cloud condensation nuclei (CCN) with insoluble fractions were derived by Khvorostyanov and Curry (2007, hereafter KC07). These solutions generalize Köhler's solutions for an arbitrary soluble fraction of CCN, and have two limiting cases: large soluble fraction (Köhler's original solution); and a new "low soluble fraction" limit. Similar solutions were found subsequently by Kokkola et al. (2008, hereafter Kok08); however, Kok08 used the approximation of an ideal and dilute solution, while KC07 used more accurate assumptions that account for nonideality of solutions. Kok08 found a large discrepancy with KC07 in the critical supersaturations. It is shown that the major discrepancy with KC07 found in Kok08 was caused by the simple mistake in Kok08, where comparison was made not with the general solution from KC07, but with the Köhler's solution or with some unknown quantity, not even with the "low soluble fraction" limit. If general solutions from the two works are compared, the equations from Kok08 mostly repeat the equations from KC07, except that Kok08 use the ideal dilute solution approximation. If the mistake in Kok08 is corrected, then the differences in the critical radii and supersaturations do not exceed 16–18%, which characterizes the errors of the ideal dilute solution approximation. If the Kok08 scheme is modified following KC07 to account for the non-ideality of solution, then the difference with KC07 does not exceed 0.4–1%.

APA, Harvard, Vancouver, ISO, and other styles

36

Černušák, Ivan, Susan K. Gregurick, Marjorie Roswell, Carol A. Deakyne, H. Donald Brooke Jenkins, and Joel F. Liebman. "Additivity of Absolute Entropies." Collection of Czechoslovak Chemical Communications 69, no. 1 (2004): 213–30. http://dx.doi.org/10.1135/cccc20040213.

Full text

Abstract:

Symmetry number-corrected entropies for a series of inorganic diatomic molecules were analyzed. We have considered molecules XY (X, Y = H, F, Cl, Br, I, Li, Na, K, Rb, Cs, B and Al). Based on the assumption of elemental additivity, the prediction of known entropy data is quite satisfactory (except for H2) and provides fairly reasonable estimates for data currently unavailable.

APA, Harvard, Vancouver, ISO, and other styles

37

Dyundik, Yuliya, and Elena Kalish. "Sharing experience: how to prevent and correct mistakes when teaching english at university." Applied psychology and pedagogy 5, no. 2 (April 29, 2020): 97–106. http://dx.doi.org/10.12737/2500-0543-2020-97-106.

Full text

Abstract:

In the article the authors analyze a mistake as an integral part of any studying process on the example of studying English at University. The authors point out that making mistakes is quite natural, moreover it helps reveal major problems in terms of both studying and teaching. Thanks to students’ mistakes the teacher has an opportunity to understand how to work with a definite group, what aspects and methods need more attention and activity. The article considers basic reasons which lead to mistakes and ideas how to deal with them based on the authors’ experience. It is pointed out that the teacher has to decide how to prevent and work with mistakes in every occasion as every student and every lesson are unique and require individual approach and attention.

APA, Harvard, Vancouver, ISO, and other styles

38

Duan, Xiao Xia, Shi Hua Huang, Li Xin Yi, and Wen Chao Wei. "In Depth Analysis on the Excitation Spectrum of SrS: Eu²⁺, Dy³⁺." Advanced Materials Research 1096 (April 2015): 262–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1096.262.

Full text

Abstract:

The long persistent phosphor SrS: Eu2+, Dy3+ was prepared by hydrothermal method. The crystalline structure was characterized by using X-ray diffraction (XRD). The experimental excitation spectrum was carried out with Flurolog-3 fluorescent spectrometer. The results show that there are seven sharp sub-peaks on the wide band spectrum. This paper focuses on the origin of the seven peaks. Rhodamine B standard solution was used to confirmed that these peaks correspond to the light source (Xe lamp) emission in Flurolog-3 fluorescent spectrometer. The excitation spectrum of Eu2+ in SrS: Eu2+, Dy3+ was corrected with Rhodamine B. It was found that the corrected spectrum was quite different from the experimental spectrum.

APA, Harvard, Vancouver, ISO, and other styles

39

Innis, Peter C., and Kenneth A. Krackow. "Weightbearing Roentgenograms in Arthritis of the Ankle: A Case Report." Foot & Ankle 9, no. 1 (August 1988): 54–58. http://dx.doi.org/10.1177/107110078800900111.

Full text

Abstract:

In specific situations the nonweightbearing roentgenograms of the ankle do not correlate with clinically suspected ankle malalignment or arthrosis, and weightbearing roentgenograms of the ankle joint can be quite helpful. The nature and severity of ankle arthrosis may not be detected with standard x-rays alone. A case is described in which these views contributed significantly to the clinical treatment of a rheumatoid patient.

APA, Harvard, Vancouver, ISO, and other styles

40

Mantelli, Sincero. "Quia scarabaeus uel cantharus uermis est stercoris. Una glossa erasmiana nel Commentario ad Abacuc di Gerolamo." Augustinianum 50, no. 2 (2010): 443–51. http://dx.doi.org/10.5840/agstm201050216.

Full text

Abstract:

In the main editions of the Commentary by Jerome on the prophet Habakkuk one can read a gloss (« quia scarabaeus uel cantharus uermis est stercoris ») which cannot be found in the manuscript that is usually consulted. The codices show different readings which in most cases quote a corrupt text. Considering that the above-mentioned note does not appear in the pre-Erasmian editions one can draw the conclusion that Erasmus himself corrected the text, adding the meaningful note. To confirm what has been said one can add other corrections, perhaps less significant but which nevertheless can be equally attributed to the hand of the Rotterdam Humanist.

APA, Harvard, Vancouver, ISO, and other styles

41

Bohigues, Asbel. "Group identity, ideology or recognition? Lawmakers’ support for gender quotas in Latin America." Revista CIDOB d'Afers Internacionals, no. 127 (April 8, 2021): 95–120. http://dx.doi.org/10.24241/rcai.2021.127.1.95/en.

Full text

Abstract:

The adoption and improvement of gender quota laws depend on political elites, but which lawmakers believe quotas are necessary? To answer this question, we use data from surveys of the elites in 13 Latin American parliaments. The findings are unexpected, both at national and party levels: the strength of already-existing quotas does not perfectly correlate with support for quotas, and the attitudes of political parties on the matter are not consistent. At the individual level, three pro-quota groups are identified: women, the left, and those who recognise the problem of gender inequality. When comparing the significance of these three groups, it is observed that women lawmakers will always be more supportive than men, regardless of ideology and the degree of recognition of the problem.

APA, Harvard, Vancouver, ISO, and other styles

42

Mehta, P. P., J. S. Bertram, and W. R. Loewenstein. "The actions of retinoids on cellular growth correlate with their actions on gap junctional communication." Journal of Cell Biology 108, no. 3 (March 1, 1989): 1053–65. http://dx.doi.org/10.1083/jcb.108.3.1053.

Full text

Abstract:

Retinoic acid (a possible morphogen), its biological precursor retinol, and certain synthetic derivatives of retinol profoundly change junctional intercellular communication and growth (saturation density) in 10T 1/2 and 3T3 cells and in their transformed counterparts. The changes correlate: growth decreases as the steady-state junctional permeability rises, and growth increases as that permeability falls. Retinoic acid and retinol exert quite different steady-state actions on communication at noncytotoxic concentrations in the normal cells: retinoic acid inhibits communication at 10(-10)-10(-9) M and enhances at 10(-9)-10(-7) M, whereas retinol only enhances (10(-8)-10(-6) M). In v-mos-transformed cells the enhancement is altogether lacking. But regardless of the retinoid or cell type, all growth responses show essentially the same dependence on junctional permeability. This is the expected behavior if the cell-to-cell channels of gap junctions disseminate growth-regulating signals through cell populations.

APA, Harvard, Vancouver, ISO, and other styles

43

Guedes, Ana C., Francisco Cribari-Neto, and Patrícia L. Espinheira. "Bartlett-corrected tests for varying precision beta regressions with application to environmental biometrics." PLOS ONE 16, no. 6 (June 28, 2021): e0253349. http://dx.doi.org/10.1371/journal.pone.0253349.

Full text

Abstract:

Beta regressions are commonly used with responses that assume values in the standard unit interval, such as rates, proportions and concentration indices. Hypothesis testing inferences on the model parameters are typically performed using the likelihood ratio test. It delivers accurate inferences when the sample size is large, but can otherwise lead to unreliable conclusions. It is thus important to develop alternative tests with superior finite sample behavior. We derive the Bartlett correction to the likelihood ratio test under the more general formulation of the beta regression model, i.e. under varying precision. The model contains two submodels, one for the mean response and a separate one for the precision parameter. Our interest lies in performing testing inferences on the parameters that index both submodels. We use three Bartlett-corrected likelihood ratio test statistics that are expected to yield superior performance when the sample size is small. We present Monte Carlo simulation evidence on the finite sample behavior of the Bartlett-corrected tests relative to the standard likelihood ratio test and to two improved tests that are based on an alternative approach. The numerical evidence shows that one of the Bartlett-corrected typically delivers accurate inferences even when the sample is quite small. An empirical application related to behavioral biometrics is presented and discussed.

APA, Harvard, Vancouver, ISO, and other styles

44

Leinert, Ch, and U. Thiele. "Stellar Photometry at the North Ecliptic Pole: The Contribution to Background Starlight." Symposium - International Astronomical Union 139 (1990): 105–6. http://dx.doi.org/10.1017/s0074180900240461.

Full text

Abstract:

We performed UBVRI photometry in a 4.7° field of diameter centered on the North Ecliptic Pole, covering all 94 SAO stars and one planetary nebula. This represents the first step of an attempt to improve the knowledge of integrated starlight in this important viewing direction. The contribution of these bright stars to the integrated starlight is considerable (30–40%) and quite unevenly distributed. Therefore, surface photometry with large fields of view should be individually corrected for this contribution.

APA, Harvard, Vancouver, ISO, and other styles

45

Fedi, Maurizio, Tatiana Quarta, and Angelo De Santis. "Inherent power‐law behavior of magnetic field power spectra from a Spector and Grant ensemble." GEOPHYSICS 62, no. 4 (July 1997): 1143–50. http://dx.doi.org/10.1190/1.1444215.

Full text

Abstract:

The Spector and Grant method, which has been in use for 25 years, relates average depths to source to rate of decay of the magnetic power spectra. This method, which assumes a uniform distribution of parameters for an ensemble of magnetized blocks, leads to a depth‐dependent exponential rate of decay. We show that also inherent in this model is a power‐law rate of decay that is independent of depth. For most cases, except for extreme depths and small block sizes, the observed power spectrum should be corrected for a power law decay rate of β∼3. If the depth distribution of the magnetic blocks is Gaussian, then the observed power spectrum should be corrected for both a depth independent power law and exponential decay. This power‐law decay is very similar to the scaling behavior, supposed as a fractal character, of observed magnetic fields in North America. As a general rule, when β∼3, further information is needed to discriminate between a fractal or Spector and Grant model. However, it is becoming quite clear that magnetic power spectra should be corrected for a power law decay before applying the Spector and Grant method for depth determination.

APA, Harvard, Vancouver, ISO, and other styles

46

TAYLOR, MICHAEL J., and ROBERT K. HEATON. "Sensitivity and specificity of WAIS–III/WMS–III demographically corrected factor scores in neuropsychological assessment." Journal of the International Neuropsychological Society 7, no. 7 (November 2001): 867–74. http://dx.doi.org/10.1017/s1355617701777107.

Full text

Abstract:

This study explored the neurodiagnostic utility of 6 factor scores identified by recent exploratory and confirmatory factor analyses of the WAIS–III and WMS–III: Verbal Comprehension, Perceptual Organization, Processing Speed, Working Memory, Auditory Memory and Visual Memory. Factor scores were corrected for age, education, sex and ethnicity to minimize their influences on diagnostic accuracy. Cut-offs at 1, 1.5 and 2 standard deviations (SDs) below the standardization sample mean were applied to data from the overlapping test normative samples (N = 1073) and 6 clinical samples described in the WAIS–III/WMS–III Technical Manual (N = 126). The analyses suggest that a 1 SD cut-off yields the most balanced levels of sensitivity and specificity; more strict (1.5 or 2 SD) cut-offs generally result in trading modest gains in specificity for larger losses in sensitivity. Finally, using combinations of WAIS–III/WMS–III factors together as test batteries, we explored the sensitivity and specificity implications of varying diagnostic decision rules (e.g., 1 vs. 2 impaired factors = “impairment”). For most of the disorders considered here, even a small (e.g., 3 factor) WAIS–III/WMS–III battery provides quite good overall diagnostic accuracy. (JINS, 2001, 7, 867–874.)

APA, Harvard, Vancouver, ISO, and other styles

47

Wirtz, Peter, and Gregor Ries. "The Pace of Life - Reanalysed: Why Does Walking Speed of Pedestrians Correlate With City Size?" Behaviour 123, no. 1-2 (1992): 77–83. http://dx.doi.org/10.1163/156853992x00129.

Full text

Abstract:

AbstractIn a much quoted study, BORNSTEIN & BORNSTEIN (1976) showed that the walking speed of pedestrians is positively correlated with the size of the city. They interpreted the higher walking speed of people in larger cities as a psychological response to stimulatory overload. We also found a positive correlation between walking speed and city size. In addition, we showed that - at least in our sample - larger cities had higher proportions of young males and lower proportions of people older than 60 years. Walking speed and momentary density did not correlate positively. Because walking speed is age- and sex-dependent (Fig. 2), differences in population structure are likely to cause differences in average walking speed. The average walking speed predicted for each city according to its age- and sex-composition correlated positively with city size. The regressions of observed walking speed on population size and of walking speed predicted from age structure on population size did no differ significantly in their slopes (p > 0.95). It therefore seems unnecessary to invoke other factors in addition to age composition to explain differences in average walking speeds of pedestrians.

APA, Harvard, Vancouver, ISO, and other styles

48

Huang, Xian-Rong, Thomas Gog, Jungho Kim, Elina Kasman, Ayman H. Said, Diego M. Casa, Michael Wieczorek, Marcelo G. Hönnicke, and Lahsen Assoufid. "Correct interpretation of diffraction properties of quartz crystals for X-ray optics applications." Journal of Applied Crystallography 51, no. 1 (February 1, 2018): 140–47. http://dx.doi.org/10.1107/s1600576717018155.

Full text

Abstract:

Quartz has hundreds of strong Bragg reflections that may offer a great number of choices for making fixed-angle X-ray analyzers and polarizers at virtually any hard X-ray energies with selectable resolution. However, quartz crystals, unlike silicon and germanium, are chiral and may thus appear in two different forms of handedness that are mirror images. Furthermore, because of the threefold rotational symmetry along thecaxis, the {h1h2h3L} and {h2h1h3L} Bragg reflections may have quite different Darwin bandwidth, reflectivity and angular acceptance, although they have the same Bragg angle. The design of X-ray optics from quartz crystals therefore requires unambiguous determination of the orientation, handedness and polarity of the crystals. The Laue method and single-axis diffraction technique can provide such information, but the variety of conventions used in the literature to describe quartz structures has caused widespread confusion. The current studies give detailed guidelines for design and fabrication of quartz X-ray optics, with special emphasis on the correct interpretation of Laue patterns in terms of the crystallography and diffraction properties of quartz. Meanwhile, the quartz crystals examined were confirmed by X-ray topography to have acceptably low densities of dislocations and other defects, which is the foundation for developing high-resolution quartz-based X-ray optics.

APA, Harvard, Vancouver, ISO, and other styles

49

de Witte, Bruno. "Revision." European Constitutional Law Review 1, no. 1 (October 12, 2004): 136–40. http://dx.doi.org/10.1017/s1574019605001367.

Full text

Abstract:

Many proponents of the Constitutional Treaty admit that this document is far from perfect, indeed quite disappointing in many respects, but argue that the Treaty should be seen as a step in the long process of European integration rather than an end-point. It will be possible to learn from the failings of the new Treaty and correct them later on, just like this Treaty itself has corrected some of the mistakes, and fill in some of the blanks left by earlier Treaty revisions.

APA, Harvard, Vancouver, ISO, and other styles

50

Pujol, José M., Ewald Luschen, and Yiguang Hu. "Seismic wave attenuation in metamorphic rocks from VSP data recorded in Germany’s continental super‐deep borehole." GEOPHYSICS 63, no. 2 (March 1998): 354–65. http://dx.doi.org/10.1190/1.1444335.

Full text

Abstract:

Vertical seismic profiling (VSP) data recorded in the German continental deep borehole (KTB) between 3 and 6 km have been used to study the attenuation of P-waves. A vibrator source was used to generate the data. In this depth range, the lithology is dominated by a metabasite unit (amphibolite and metagabbro) with various degrees of alteration, intercalated with paragneisses. The method used to determine attenuation is based on the fit of a straight line to the logarithm of amplitude ratios for variable depth and fixed frequency. Inspection of the corresponding attenuation curves showed sharp discontinuities, which correlate with changes in the seismic source (mostly related to changes in location), as recorded by a nearby monitor geophone. To avoid the uncertainties introduced by these changes, the analysis was restricted to a depth interval (3576–4538 m) for which the source was not moved. Even in this case, however, the monitor traces showed significant variations in their frequency content, although not much variation in their peak time‐domain amplitudes. To account for these variations, the attenuation coefficients obtained for the actual data were corrected for source variations by subtraction of the attenuation coefficients determined from the analysis of synthetic VSP data computed using source wavelets extracted from the monitor traces. After these corrections, the values of Q for frequencies between 7.8 and 46.9 Hz are between 14 and 32. These values are quite low, and may be related to the presence of fluids known to exist in the depth range under consideration, although scattering processes may also contribute to the high attenuation. The variation of Q with frequency may be the result of processing artifacts.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'QUOTE CORRETTE'

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