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Hirsh, Max. "Design Aesthetics of Transborder Infrastructure in the Pearl River Delta". Journal of the Society of Architectural Historians 73, n.º 1 (1 de marzo de 2014): 137–52. http://dx.doi.org/10.1525/jsah.2014.73.1.137.
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Design Aesthetics of Transborder Infrastructure in the Pearl River Delta investigates the development of a “transborder” ferry network that allows passengers in Mainland China to fly through Hong Kong International Airport without going through customs and immigration controls. Located deep inside Guangdong Province, these facilities cater to travelers whose movement across international frontiers is limited by their income or citizenship. Focusing on two of these terminals, Max Hirsh argues that the prevailing emphasis on iconic structures in the architectural history of air travel has overshadowed the emergence of distinctly un-iconic aviation facilities designed to plug less-privileged people and places into broader networks of international air travel. Hirsh locates this infrastructural innovation in the historical context of the region and interrogates its spatial logic and aesthetic composition in an effort to model a new understanding of urban space: one that illuminates an architecture of incipient global mobility that has been inconspicuously inserted into ordinary places and unspectacular structures throughout the Pearl River Delta.
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Rivers, Andrew M. y Adam Hahn. "What Cognitive Mechanisms Do People Reflect on When They Predict IAT Scores?" Personality and Social Psychology Bulletin 45, n.º 6 (14 de octubre de 2018): 878–92. http://dx.doi.org/10.1177/0146167218799307.
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Research indicates that individuals can prospectively predict biases they will show on the implicit-association test (IAT). The present study uses the Quadruple process model to analyze data from Hahn, Judd, Hirsh, and Blair to investigate which cognitive mechanisms people reflect on when predicting their racial bias scores on the IAT. The Quadruple process model reveals that a combination of activated associations and self-regulatory control best explains what participants report when they predict their biases on the IAT. Furthermore, it appears to be specifically the total activation of positive attitudes toward Whites and negative attitudes toward minorities rather than negative attitudes toward minorities alone, that participants use to make their predictions.
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SAXTON, MATTHEW. "The Contrast Theory of negative input". Journal of Child Language 24, n.º 1 (febrero de 1997): 139–61. http://dx.doi.org/10.1017/s030500099600298x.
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Beliefs about whether or not children receive corrective input for grammatical errors depend crucially on how one defines the concept of correction. Arguably, previous conceptualizations do not provide a viable basis for empirical research (Gold, 1967; Brown & Hanlon, 1970; Hirsh-Pasek, Treiman & Schneiderman, 1984). Within the Contrast Theory of negative input, an alternative definition of negative evidence is offered, based on the idea that the unique discourse structure created in the juxtaposition of child error and adult correct form can reveal to the child the contrast, or conflict, between the two forms, and hence provide a basis for rejecting the erroneous form. A within-subjects experimental design was implemented for 36 children (mean age 5;0), in order to compare the immediate effects of negative evidence with those of positive input, on the acquisition of six novel irregular past tense forms. Children reproduced the correct irregular model more often, and persisted with fewer errors, following negative evidence rather than positive input.
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Awodutire, Phillip, Blessing Sasanya, Olohita Ufuoma y Oluwafemi Samson Balogun. "Parametric modelling of rainfall return periods in south-western Nigeria: Survival analysis approach". F1000Research 11 (24 de enero de 2022): 83. http://dx.doi.org/10.12688/f1000research.75722.1.
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Background: Rainfall is the main source of water on the earth’s surface. It infiltrates and percolates deep into the soil for groundwater recharge. Rainfall patterns, amounts, durations, and intensities can vary daily, monthly, annually, and spatially. It is therefore important to accurately estimate rainfall return periods, which can be employed in hydraulic design and flood control measures. Methods: This research considered the survival analysis approach for the prediction of rainfall return periods including intensity, and months during which these would occur in south-western Nigeria. Twenty years’ of annual rainfall data were obtained from three metrological stations and these were subjected to nine different probability plotting position methods. Results from the plotting positions was further subjected to four survival models using five years of censor time. The Akaike Information Criterion (AIC) was used to determine the best-fitting model for the dataset. Results: The Laplace probability plotting position in conjunction with the log-logistic distribution best describes the datasets, since it gave the lowest AIC value of 22.53. The log-logistic distribution is also suitable for the prediction of return period from the Weibull probability plotting position since the AIC values were 6.934 and -4.332 respectively. The Hirsh plotting position in conjunction with the Weibull distribution is also suitable for the description of the dataset. Conclusion: The established parametric models are suitable for the accurate prediction of return periods of peak rainfall events during any month of the year.
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Shen, J. y J. Hirsh. "cis-regulatory sequences responsible for alternative splicing of the Drosophila dopa decarboxylase gene". Molecular and Cellular Biology 14, n.º 11 (noviembre de 1994): 7385–93. http://dx.doi.org/10.1128/mcb.14.11.7385-7393.1994.
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The Drosophila dopa decarboxylase gene, Ddc, is expressed in the hypoderm and in specific sets of cells in the central nervous system (CNS). The unique Ddc primary transcript is alternatively spliced in these two tissues. The Ddc CNS mRNA contains all four exons (A through D), whereas the hypodermal mRNA contains only three exons (A, C, and D). To localize cis-regulatory sequences responsible for Ddc alternative splicing, a Ddc minigene and several fusion genes containing various amounts of Ddc sequences fused to fushi tarazu (ftz) exon 1 were constructed and introduced into flies by P-element-mediated germ line transformation. We find that Ddc intron ab and exon B are sufficient to regulate Ddc alternative splicing, since transcripts of a minimal fusion gene containing most of Ddc intron ab and exon B are spliced to exon B in the CNS but not in the hypoderm. These results indicate that Ddc alternative splicing is regulated by either a negative mechanism preventing splicing to exon B in the hypoderm or a positive mechanism activating splicing to exon B in the CNS. Our previous data suggest that Ddc hypodermal splicing is the actively regulated splicing pathway (J. Shen, C. J. Beall, and J. Hirsh, Mol. Cell. Biol. 13:4549-4555, 1993). Here we show that deletion of Ddc intron ab sequences selectively disrupts hypodermal splicing specificity. These results support a model in which Ddc alternative splicing is negatively regulated by a blockage mechanism preventing splicing to exon B in the hypoderm.
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Shen, J. y J. Hirsh. "cis-regulatory sequences responsible for alternative splicing of the Drosophila dopa decarboxylase gene." Molecular and Cellular Biology 14, n.º 11 (noviembre de 1994): 7385–93. http://dx.doi.org/10.1128/mcb.14.11.7385.
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The Drosophila dopa decarboxylase gene, Ddc, is expressed in the hypoderm and in specific sets of cells in the central nervous system (CNS). The unique Ddc primary transcript is alternatively spliced in these two tissues. The Ddc CNS mRNA contains all four exons (A through D), whereas the hypodermal mRNA contains only three exons (A, C, and D). To localize cis-regulatory sequences responsible for Ddc alternative splicing, a Ddc minigene and several fusion genes containing various amounts of Ddc sequences fused to fushi tarazu (ftz) exon 1 were constructed and introduced into flies by P-element-mediated germ line transformation. We find that Ddc intron ab and exon B are sufficient to regulate Ddc alternative splicing, since transcripts of a minimal fusion gene containing most of Ddc intron ab and exon B are spliced to exon B in the CNS but not in the hypoderm. These results indicate that Ddc alternative splicing is regulated by either a negative mechanism preventing splicing to exon B in the hypoderm or a positive mechanism activating splicing to exon B in the CNS. Our previous data suggest that Ddc hypodermal splicing is the actively regulated splicing pathway (J. Shen, C. J. Beall, and J. Hirsh, Mol. Cell. Biol. 13:4549-4555, 1993). Here we show that deletion of Ddc intron ab sequences selectively disrupts hypodermal splicing specificity. These results support a model in which Ddc alternative splicing is negatively regulated by a blockage mechanism preventing splicing to exon B in the hypoderm.
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MacKenzie, Ian A., Simon F. B. Tett y Anders V. Lindfors. "Climate Model–Simulated Diurnal Cycles in HIRS Clear-Sky Brightness Temperatures". Journal of Climate 25, n.º 17 (13 de abril de 2012): 5845–63. http://dx.doi.org/10.1175/jcli-d-11-00552.1.
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Abstract Clear-sky brightness temperature measurements from the High-Resolution Infrared Radiation Sounder (HIRS) are simulated with two climate models via a radiative transfer code. The models are sampled along the HIRS orbit paths to derive diurnal climatologies of simulated brightness temperature analogous to an existing climatology based on HIRS observations. Simulated and observed climatologies are compared to assess model performance and the robustness of the observed climatology. Over land, there is good agreement between simulations and observations, with particularly high consistency for the tropospheric temperature channels. Diurnal cycles in the middle- and upper-tropospheric water vapor channels are weak in both simulations and observations, but the simulated diurnal brightness temperature ranges are smaller than are observed with different phase and there are also intermodel differences. Over sea, the absence of diurnal variability in the models’ sea surface temperatures causes an underestimate of the small diurnal cycles measured in the troposphere. The simulated and observed climatologies imply similar diurnal sampling biases in the HIRS record for the tropospheric temperature channels, but for the upper-tropospheric water vapor channel, differences in the contributions of the 24- and 12-hourly diurnal harmonics lead to differences in the implied bias. Comparison of diurnal cycles derived from HIRS-like and full model sampling suggests that the HIRS measurements are sufficient to fully constrain the diurnal behavior. Overall, the results suggest that recent climate models well represent the major processes driving the diurnal behavior of clear-sky brightness temperature in the HIRS channels. This encourages further studies of observed and simulated climate trends over the HIRS era.
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Hapidin, R. Sri Martini Meilanie y Eriva Syamsiatin. "Multi Perspectives on Play Based Curriculum Quality Standards in the Center Learning Model". JPUD - Jurnal Pendidikan Usia Dini 14, n.º 1 (30 de abril de 2020): 15–31. http://dx.doi.org/10.21009/jpud.141.02.
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Playing curriculum development based on early childhood learning is a major issue in international early childhood education discussions. This study aims to look at the concepts and practices of play-based curriculum in early childhood education institutions. The study uses qualitative methods with the CIPP model program evaluation on play-based curriculum. Data collection techniqueswere carriedout using participatory observation, document studies and interviews. Participants are early childhood educators, early childhood and parents. The results found that the play-based curriculum has not yet become the main note in the preparation and development of concepts and learning practices in early childhood. Play-based curriculum quality standards have not provided a solid and clear concept foundation in placing play in the center of learning models. Other findings the institution has not been able to use the DAP (Developmentally Appropriate Practice) approach fully, and has not been able to carry out the philosophy and ways for developing a curriculum based on play. However, quite a lot of research found good practices implemented in learning centers in early childhood education institutions, such as develop children's independence programs through habituation to toilet training and fantasy play.
Keywords: Play Based Curriculum, Center Learning Model, Curriculum Quality Standards, Early Childhood Education
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Monteiro, Paulo J. M. "A note on the Hirsch model". Cement and Concrete Research 21, n.º 5 (septiembre de 1991): 947–50. http://dx.doi.org/10.1016/0008-8846(91)90190-s.
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Ivanov, Valery A. y Mikhail E. Zhuravlev. "Ferromagnetism in the Hubbard-Hirsch model". Physica C: Superconductivity 185-189 (diciembre de 1991): 1423–24. http://dx.doi.org/10.1016/0921-4534(91)90838-p.
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Klebanov, Lev B., Yulia V. Kuvaeva y Zeev E. Volkovich. "Statistical Indicators of the Scientific Publications Importance: A Stochastic Model and Critical Look". Mathematics 8, n.º 5 (3 de mayo de 2020): 713. http://dx.doi.org/10.3390/math8050713.
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A model of scientific citation distribution is given. We apply it to understand the role of the Hirsch index as an indicator of scientific publication importance in Mathematics and some related fields. The proposed model is based on a generalization of such well-known distributions as geometric and Sibuya laws. Real data analysis of the Hirsch index and corresponding citation numbers is given.
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Kwong, LE, KD Suchy, AR Sastri, JF Dower y EA Pakhomov. "Comparison of mesozooplankton production estimates from Saanich Inlet (British Columbia, Canada) using the chitobiase and biomass size spectra approaches". Marine Ecology Progress Series 655 (26 de noviembre de 2020): 59–75. http://dx.doi.org/10.3354/meps13533.
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Zooplankton production estimates are necessary to understand the availability and transfer of energy to higher trophic levels in marine food webs. Methods have been developed to quantify zooplankton production; however, they are difficult to compare as they focus on single species, groups, stages, or size classes of zooplankton. We compared 2 methods for estimating crustacean production: the chitobiase method (based on a crustacean moulting enzyme), and 3 empirical growth rate models (Huntley-Lopez, Hirst-Lampitt, and Hirst-Bunker) applied to optically resolved mesozooplankton normalized biomass size spectra (NBSS). Mesozooplankton net samples were collected between March and August of 2010 and 2011 in Saanich Inlet (British Columbia, Canada) and analyzed in the laboratory using microscopy and a bench-top laser optical particle counter (lab-LOPC). Microscope and lab-LOPC estimates of abundance and biomass were in close agreement. Crustacean production estimates were highest using Huntley-Lopez (0.20-185.3 mg C m-3 d-1), followed by Hirst-Bunker (0 .01-18.3 mg C m-3 d-1), chitobiase (0.05-15.6 mg C m-3 d-1), and Hirst-Lampitt (0.03-14.3 mg C m-3 d-1). Hirst-Lampitt-, Hirst-Bunker-, and chitobiase-based estimates of crustacean production and trophic transfer efficiency (TTE) yielded similar patterns/magnitude, while the Huntley-Lopez model was more variable. Estimates showed stronger agreement in 2011 than in 2010, attributed to the shift from El Niño to La Niña conditions. We highlight similarities/differences associated with these techniques and suggest that Hirst-Bunker estimates of production and TTE are most consistent with chitobiase-based values.
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Ceylan, Halil, Kasthurirangan Gopalakrishnan y Sunghwan Kim. "Advanced approaches to hot-mix asphalt dynamic modulus prediction". Canadian Journal of Civil Engineering 35, n.º 7 (julio de 2008): 699–707. http://dx.doi.org/10.1139/l08-016.
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The dynamic modulus (|E*|) is one of the primary hot-mix asphalt (HMA) material property inputs at all three hierarchical levels in the new Mechanistic–empirical pavement design guide (MEPDG). The existing |E*| prediction models were developed mainly from regression analysis of an |E*| database obtained from laboratory testing over many years and, in general, lack the necessary accuracy for making reliable predictions. This paper describes the development of a simplified HMA |E*| prediction model employing artificial neural network (ANN) methodology. The intelligent |E*| prediction models were developed using the latest comprehensive |E*| database that is available to researchers (from National Cooperative Highway Research Program Report 547) containing 7400 data points from 346 HMA mixtures. The ANN model predictions were compared with the Hirsch |E*| prediction model, which has a logical structure and a relatively simple prediction model in terms of the number of input parameters needed with respect to the existing |E*| models. The ANN-based |E*| predictions showed significantly higher accuracy compared with the Hirsch model predictions. The sensitivity of input variables to the ANN model predictions were also examined and discussed.
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Berikashvili, N. y M. Mikiashvili. "The Predifferential of a Path Fibration". gmj 11, n.º 3 (septiembre de 2004): 415–24. http://dx.doi.org/10.1515/gmj.2004.415.
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Abstract For a simply connected space 𝐵 the Hirsch model of path fibration is constructed in terms of 𝐵. In particular this means the calculation of loop space cohomology. As an application, the Hirsch model of the fiber of any fibration over 𝐵 is given.
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Zhijun, Wang y Qiu Xiaoming. "Two Theorems on the Hubbard-Hirsch Model". Communications in Theoretical Physics 28, n.º 1 (30 de julio de 1997): 51–56. http://dx.doi.org/10.1088/0253-6102/28/1/51.
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Zhang, Xiangdong, Bozang Li y Fu-Cho Pu. "Magnetic excitation in the Hubbard-Hirsch model". Physical Review B 54, n.º 1 (1 de julio de 1996): 44–47. http://dx.doi.org/10.1103/physrevb.54.44.
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Egghe, Leo y Ronald Rousseau. "An informetric model for the Hirsch-index". Scientometrics 69, n.º 1 (octubre de 2006): 121–29. http://dx.doi.org/10.1007/s11192-006-0143-8.
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Jungles, Kassidy M., Andrea M. Pesch, Nicole Hirsh, Anna R. Michmerhuizen, Kari Wilder-Romans, Benjamin C. Chandler, Meilan Liu et al. "Abstract 216: Expression of DNA damage response proteins modifies the efficacy of CDK4/6 inhibitor-mediated radiosensitization in breast cancer models". Cancer Research 82, n.º 12_Supplement (15 de junio de 2022): 216. http://dx.doi.org/10.1158/1538-7445.am2022-216.
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Abstract Purpose: CDK4/6 inhibitors (CDK4/6i) are standard of care for the treatment of locally advanced and metastatic estrogen receptor-positive (ER+), HER2-negative metastatic breast cancer (BC). CDK4/6 inhibition + radiation therapy (RT) is synergistic in both ER+ and triple negative breast cancers (TNBC), but the underlying mechanism is not entirely understood. In this study, we evaluated how pre-existing or genetically engineered deficits in DNA damage response genes (BRCA1/2, RAD51, RB1, XRCC6, TP53) influence radiosensitization. We hypothesized that inhibition of homologous recombination (HR) would prevent CDK4/6i-mediated radiosensitization and blocking non-homologous end joining (NHEJ) would be synergistic. Methods: Cellular proliferation assays determined the half-maximal inhibitory concentrations (IC50) of the 3 approved CDK4/6i palbociclib, ribociclib, and abemaciclib. Clonogenic survival assays determined the radiation enhancement ratios (rERs) and evaluated the efficacy of CDK4/6i + RT. Immunofluorescence assays measured RAD51 foci formation and quantified micronuclei formation following RT and/or CDK4/6 inhibition. Immunoprecipitation with myc-RAD51 and GFP-RB assessed potential protein-protein interactions. Results: While ER+ and TNBC cell lines with wild type BRCA1 expression are radiosensitized by CDK4/6i, BRCA1-deficient SUM-149 cells are not radiosensitized by CDK4/6i at concentrations up to 1µM (rER: 0.92-1.01). In an MCF-7 isogenic model of BRCA2 knockout, CDK4/6i-mediated radiosensitization was abolished compared to Cas9 control or parental cell lines. In ER+ BC cell lines (MCF-7-p53 wt, T47D-p53 mutant), transient or genetic knockdown of RAD51 prevented CDK4/6i-induced radiosensitization. The total quantity of RT-induced RAD51 foci increased in vitro following overexpression of RB-a tumor suppressor and downstream target of CDK4/6. RB overexpression also rescued CDK4/6i-mediated radiosensitization in RB-deficient cell lines through changes in HR efficiency but not via NHEJ or altered micronuclei formation. Moreover, immunoprecipitation of RAD51 in ER+ (MCF-7) and TNBC (MDA-MB-231) cells exhibited an interaction with RB. Conversely, loss of the NHEJ-associated protein Ku70 (XRCC6) was synergistic with palbociclib + RT in MCF7 (rER: 1.76-2.44) and T47D (rER: 1.61-3.88) cells. Finally, CRISPR Cas9-mediated loss of the tumor suppressor p53 (TP53) did not affect radiosensitization induced by CDK4/6i in isogenic p53 wt ER+ (MCF-7, rER: 1.19-1.33) and p53 wt TNBC (CAL-51, rER: 1.23-1.52) cell lines with TP53 loss. Conclusions: Taken together, our results in multiple non-overlapping isogenic models of ER+ and TNBC suggest that CDK4/6i-mediated radiosensitization of BC cell lines occurs through impaired HR activity and RB signaling, and not through the actions of p53 or NHEJ-mediated DNA repair. Citation Format: Kassidy M. Jungles, Andrea M. Pesch, Nicole Hirsh, Anna R. Michmerhuizen, Kari Wilder-Romans, Benjamin C. Chandler, Meilan Liu, Lynn Lerner, Lori J. Pierce, James M. Rae, Corey W. Speers. Expression of DNA damage response proteins modifies the efficacy of CDK4/6 inhibitor-mediated radiosensitization in breast cancer models [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 216.
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WEI GUO-ZHU. "ELECTRON CORRELATION EFFECT IN THE HUBBARD-HIRSCH MODEL". Acta Physica Sinica 43, n.º 11 (1994): 1828. http://dx.doi.org/10.7498/aps.43.1828.
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Ivanov, V. A. y M. E. Zhuravlev. "One‐band ferromagnetism in the Hubbard–Hirsch model". Journal of Applied Physics 71, n.º 7 (abril de 1992): 3455–56. http://dx.doi.org/10.1063/1.350944.
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Picard, Philippe. "Two variants of the first Nåsell-Hirsch model". Mathematical Biosciences 94, n.º 1 (mayo de 1989): 45–85. http://dx.doi.org/10.1016/0025-5564(89)90072-2.
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Hirsch, Aron. "Modal adverbs and constraints on type-flexibility". Snippets, n.º 37 (diciembre de 2019): 49–51. http://dx.doi.org/10.7358/snip-2019-037-hirs.
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Lee, Hai-Tien, Arnold Gruber, Robert G. Ellingson y Istvan Laszlo. "Development of the HIRS Outgoing Longwave Radiation Climate Dataset". Journal of Atmospheric and Oceanic Technology 24, n.º 12 (1 de diciembre de 2007): 2029–47. http://dx.doi.org/10.1175/2007jtecha989.1.
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Abstract The Advanced Very High Resolution Radiometer (AVHRR) outgoing longwave radiation (OLR) product, which NOAA has been operationally generating since 1979, is a very long data record that has been used in many applications, yet past studies have shown its limitations and several algorithm-related deficiencies. Ellingson et al. have developed the multispectral algorithm that largely improved the accuracy of the narrowband-estimated OLR as well as eliminated the problems in AVHRR. NOAA has been generating High Resolution Infrared Radiation Sounder (HIRS) OLR operationally since September 1998. In recognition of the need for a continuous and long OLR data record that would be consistent with the earth radiation budget broadband measurements in the National Polar-orbiting Operational Environmental Satellite System (NPOESS) era, and to provide a climate data record for global change studies, a vigorous reprocessing of the HIRS radiance for OLR derivation is necessary. This paper describes the development of the new HIRS OLR climate dataset. The HIRS level 1b data from the entire Television and Infrared Observation Satellite N-series (TIROS-N) satellites have been assembled. A new radiance calibration procedure was applied to obtain more accurate and consistent HIRS radiance measurements. The regression coefficients of the HIRS OLR algorithm for all satellites were rederived from calculations using an improved radiative transfer model. Intersatellite calibrations were performed to remove possible discontinuity in the HIRS OLR product from different satellites. A set of global monthly diurnal models was constructed consistent with the HIRS OLR retrievals to reduce the temporal sampling errors and to alleviate an orbital-drift-induced artificial trend. These steps significantly improved the accuracy, continuity, and uniformity of the HIRS monthly mean OLR time series. As a result, the HIRS OLR shows a comparable stability as in the Earth Radiation Budget Satellite (ERBS) nonscanner OLR measurements. HIRS OLR has superb agreement with the broadband observations from Earth Radiation Budget Experiment (ERBE) and Clouds and the Earth’s Radiant Energy System (CERES) in the ENSO-monitoring regions. It shows compatible ENSO-monitoring capability with the AVHRR OLR. Globally, HIRS OLR agrees with CERES with an accuracy to within 2 W m−2 and a precision of about 4 W m−2. The correlation coefficient between HIRS and CERES global monthly mean is 0.997. Regionally, HIRS OLR agrees with CERES to within 3 W m−2 with precisions better than 3 W m−2 in most places. HIRS OLR could be used for constructing climatology for applications that plan to use NPOESS ERBS and previously used AVHRR OLR observations. The HIRS monthly mean OLR data have high accuracy and precision with respect to the broadband observations of ERBE and CERES. It can be used as an independent validation data source. The uniformity and continuity of HIRS OLR time series suggest that it could be used as a reliable transfer reference for the discontinuous broadband measurements from ERBE, CERES, and ERBS.
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Jackson, Darren L. y Brian J. Soden. "Detection and Correction of Diurnal Sampling Bias in HIRS/2 Brightness Temperatures". Journal of Atmospheric and Oceanic Technology 24, n.º 8 (1 de agosto de 2007): 1425–38. http://dx.doi.org/10.1175/jtech2062.1.
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Abstract Diurnal sampling biases arise in the High-Resolution Infrared Radiation Sounder (HIRS) satellite observations because some of the NOAA polar-orbiting satellites drift significantly from their original local observation time. Such bias adversely affects interpretation of these data for climate studies. Twenty-six years of HIRS/2 radiance satellite data (1979–2004) were examined by creating monthly mean gridded data that categorize the observations by local observing time through averaging ascending and descending orbits separately. Corresponding HIRS/2 simulated radiance data from the Geophysical Fluid Dynamics Laboratory (GFDL) climate model were constructed using HIRS/2 satellite sampling and were found to accurately represent the diurnal sampling bias. Correction of the HIRS/2 observations from the observed diurnal sampling bias was using the model simulations of HIRS brightness temperatures to adjust the observed brightness temperatures to the model daily mean. The diurnal bias was found to vary with channel, surface type, latitude, satellite, and cloud cover, but showed little dependence on satellite scan angle. Diurnal bias is most pronounced for ascending orbit observations of the afternoon [1400 local solar time (LST)] satellites with 60°N to 60°S domain averaged brightness temperatures variations up to 0.78 K yr−1. Lower tropospheric temperature and water vapor channels contained the largest bias, and biases over land were more than twice as large as those over the ocean. Brightness temperature adjustments of up to 10 K were needed in the most extreme situations.
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Hollander, Samuel y Sandra Peart. "A Rejoinder to Abraham Hirsch". Journal of the History of Economic Thought 22, n.º 3 (septiembre de 2000): 361–65. http://dx.doi.org/10.1080/10427710050122567.
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The dispute between Hollander and Peart, and Hirsch, turns on the nature and role of verification in Mill's perception of the appropriate method for Political Economy. Professor Hirsch maintains against us that, for Mill, the models constructed by political economists are insulated from verification. His case is based on two counterclaims. First, that when Mill writes of “verification” in Book III of the Logic, he has in mind a procedure differing from that appropriate for Political Economy, which allows only “indirect verification” (outlined in Book VI). Hirsch finds that Hollander and Peart confuse the two. Secondly, since the contexts of our case studies often relate to policy formulation, Hirsch finds our elucidations of an appeal to experience of a more basic order to be unconvincing.
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Allday, Christopher y Volker Puppe. "The minimal Hirsch–Brown model via classical Hodge theory". Pacific Journal of Mathematics 226, n.º 1 (1 de julio de 2006): 41–51. http://dx.doi.org/10.2140/pjm.2006.226.41.
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Padula, Flávio R. G., Sidney Nicodemos, Júlia C. Mendes y Richard Willis. "Sensitivity analysis of complex shear modulus using Hirsch model". International Journal of Pavement Research and Technology 12, n.º 2 (marzo de 2019): 125–30. http://dx.doi.org/10.1007/s42947-019-0016-1.
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Wang, Likun, Changyong Cao y Pubu Ciren. "Assessing NOAA-16 HIRS Radiance Accuracy Using Simultaneous Nadir Overpass Observations from AIRS". Journal of Atmospheric and Oceanic Technology 24, n.º 9 (1 de septiembre de 2007): 1546–61. http://dx.doi.org/10.1175/jtech2073.1.
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Abstract The High-Resolution Infrared Radiation Sounder (HIRS) has been carried on NOAA satellites for more than two decades, and the HIRS data have been widely used for geophysical retrievals, climate studies, and radiance assimilation for numerical weather prediction models. However, given the legacy of the filter-wheel radiometer originally designed in the 1970s, the HIRS measurement accuracy is neither well documented nor well understood, despite the importance of this information for data users, instrument manufacturers, and calibration scientists. The advent of hyperspectral sounders, such as the Atmospheric Infrared Sounder (AIRS), and intersatellite calibration techniques makes it possible to independently assess the accuracy of the HIRS radiances. This study independently assesses the data quality and calibration accuracy of HIRS by comparing the radiances between HIRS on NOAA-16 and AIRS on Aqua with simultaneous nadir overpass (SNO) observations for the year 2004. The results suggest that the HIRS radiometric bias relative to the AIRS-convolved HIRS radiance is on the order of ∼0.5 K, except channel 16, which has a bias of 0.8 K. For all eight spectrally overlapped channels, the observations by HIRS are warmer than the corresponding AIRS-convolved HIRS channel. Other than channel 16, the biases are temperature dependent. The root causes of the bias can be traced to a combination of the HIRS blackbody emissivity, nonlinearity, and spectral uncertainties. This study further demonstrates the utility of high-spectral-resolution radiance measurements for high-accuracy assessments of broadband radiometer calibration with the SNO observations.
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Chung, Eui-Seok y Brian J. Soden. "Investigating the Influence of Carbon Dioxide and the Stratosphere on the Long-Term Tropospheric Temperature Monitoring from HIRS". Journal of Applied Meteorology and Climatology 49, n.º 9 (1 de septiembre de 2010): 1927–37. http://dx.doi.org/10.1175/2010jamc2486.1.
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Abstract Contrary to a midtropospheric warming trend detected from Microwave Sounding Unit (MSU) measurements, High-Resolution Infrared Radiation Sounder (HIRS) temperature (15 μm) channels, sensitive to the thermal emission from the troposphere, produce distinct cooling trends for the period 1980–99. This apparent discrepancy in the tropospheric temperature trend is investigated through radiative transfer simulations using Geophysical Fluid Dynamics Laboratory climate model output and the profiles of the standard model atmospheres. Radiative simulations with time-invariant carbon dioxide concentration throughout the entire analysis period produce trends that are qualitatively similar to that obtained from the MSU observations, implying that the observed cooling trends of the HIRS temperature channels are attributable to increased carbon dioxide concentration over the 20-yr period. Additional simulations with the observed time-varying concentration of carbon dioxide confirm this basic result. Whereas temperature fluctuations dominate variability on monthly to interannual time scales, carbon dioxide changes dominate the decadal trends in both the observations and model simulations. Further simulations examined the sensitivity of the brightness temperature change with respect to the changes in tropospheric and stratospheric temperature. These calculations indicate that the influences of stratospheric temperature on the measured radiances are greater for the HIRS temperature channels relative to the MSU midtropospheric channel. These results highlight the contributions of time-varying carbon dioxide concentrations and stratospheric temperature to the HIRS 15-μm (temperature channel) radiance record and underscore the importance of accurately accounting for these changes when using HIRS measurements for long-term monitoring.
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IVANOV, V. A. y R. O. ZAITSEV. "NONPHONON MECHANISM OF SUPERCONDUCTIVITY IN COMPOUNDS OF TRANSITION METALS". International Journal of Modern Physics B 03, n.º 09 (septiembre de 1989): 1403–23. http://dx.doi.org/10.1142/s0217979289000907.
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The kinematical mechanism of superconductivity is applied to the Emery-Hirsch model for the CuO 2 and BiO 3 layers. A superconducting region due to strong kinematic interaction of p- and s, d-electrons are determined as a function of np and ns,d-degrees of non-filling of 2p6, 6s2, 3d10 shells of O 2−, Bi 3+, Cu +. The T c is calculated taking into account the spin flip relaxation time. Magnetostatic properties of a superconducting state in a weak magnetic field are investigated. Coefficients of the Ginzburg-Landau equation are calculated. The ground state energy of the Emery-Hirsch model is also calculated.
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Nightingale, Paul. "‘As if by osmosis’: How Ofsted’s new deficit model emerged, fully formed, as cultural capital". Power and Education 12, n.º 3 (25 de septiembre de 2020): 232–45. http://dx.doi.org/10.1177/1757743820961417.
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This paper considers recent developments in English education policy as, confirming promises made in the 2016 White Paper, Educational Excellence Everywhere, schools are now to concentrate on the realisation of a knowledge-based curriculum, one that allows all students to ‘acquire’ cultural capital. First, the remodelling of Bourdieu’s concept, designed to explain class privilege, means that the cultural capital is now a mechanism for disciplining schools and teachers who fail to deliver the required curriculum. Second, in going beyond the social inclusion advocated by previous governments, this version of cultural capital has simply recycled the 1950s notion of cultural deprivation, turning it into a ‘knowledge deficit’ to be explained with reference to the work of ED Hirsch. It remains to be seen if ‘Hirsch-knowledge’ offers anything more than passive consumption of approved content, and the paper ends with a discussion of the implications for students of the new curriculum.
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Zhong, Qiang, Hui-Quan Nie y Guo-Zhu Wei. "Properties of the Ground State in the Hubbard-Hirsch Model". physica status solidi (b) 179, n.º 1 (1 de septiembre de 1993): 177–85. http://dx.doi.org/10.1002/pssb.2221790118.
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Elkashef, Mohamed, Shawn S. Hung, David Jones y John Harvey. "Using Predictive Models to Estimate the Properties of Binders in Reclaimed Asphalt Pavement Mixes using Fine Aggregate Matrix Mix Testing". Transportation Research Record: Journal of the Transportation Research Board 2673, n.º 6 (junio de 2019): 501–11. http://dx.doi.org/10.1177/0361198119849901.
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A number of predictive models, such as the Hirsch and Al-Khateeb models, have been proposed to determine the properties of asphalt binders from asphalt concrete mix testing results. Fine aggregate matrix (FAM) mix testing can also provide useful insights into the likely performance of asphalt concrete mixes. Consequently, FAM mix testing can be an appropriate means of assessing the predictive power of these models. In this study, FAM mixes prepared with two virgin binders, PG58-28 and PG64-16, and then with different percentages of reclaimed asphalt pavement (RAP) were tested to determine their stiffness and phase angle using temperature-frequency sweeps in a dynamic shear rheometer. The data from the control mixes with no RAP were used along with the rheological properties of the virgin binders to fit the Hirsch and Al-Khateeb models. The fitted models were then used to estimate the properties of the binders in the 15% and 25% RAP FAM mixes. A comparison of the estimated binder properties with the measured binder properties clearly indicated that the fitting parameters are binder dependent. Moreover, the estimated binder moduli deviate from the measured moduli, particularly at high temperatures. The estimated complex shear moduli from the model were found to be consistently higher than the measured shear moduli values of the chemically extracted binders. It was thus concluded that the predictive models studied, in their current form, fail to provide a reliable estimate of the binder properties in mixes containing RAP.
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Turner, Emma C. y Simon F. B. Tett. "Using longwave HIRS radiances to test climate models". Climate Dynamics 43, n.º 3-4 (26 de octubre de 2013): 1103–27. http://dx.doi.org/10.1007/s00382-013-1959-6.
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Christensen, Donald W. y Ramon Bonaquist. "Improved Hirsch model for estimating the modulus of hot-mix asphalt". Road Materials and Pavement Design 16, sup2 (20 de agosto de 2015): 254–74. http://dx.doi.org/10.1080/14680629.2015.1077635.
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Zhang, Cheng, Shihui Shen y Xiaoyun Jia. "Modification of the Hirsch Dynamic Modulus Prediction Model for Asphalt Mixtures". Journal of Materials in Civil Engineering 29, n.º 12 (diciembre de 2017): 04017241. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0002099.
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Gastineau, Guillaume, Brian J. Soden, Darren L. Jackson y Chris W. O’Dell. "Satellite-Based Reconstruction of the Tropical Oceanic Clear-Sky Outgoing Longwave Radiation and Comparison with Climate Models". Journal of Climate 27, n.º 2 (15 de enero de 2014): 941–57. http://dx.doi.org/10.1175/jcli-d-13-00047.1.
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Abstract The changes of the outgoing longwave radiation (OLR) in clear-sky conditions have been calculated using High Resolution Infrared Radiation Sounder (HIRS) observations from 1979 to 2004. After applying corrections for satellite orbital drift and intercalibration of the HIRS/2 data from the NOAA satellites, the OLR is calculated from a multivariate regression over the tropical ocean region. The clear-sky OLR retrievals compare well with the observed top-of-atmosphere radiation measurements, although the precision and stability uncertainties are larger. While the tropical ocean surface temperature has risen by roughly 0.2 K from 1982 to 2004, the reconstructed OLR remains stable over the ocean. Consequently, there is an increase in the clear-sky greenhouse effect (GHE) of 0.80 W m−2 decade−1. This trend is shown to be larger than the uncertainty in the stability of the HIRS retrievals. The observations are compared with two phase 3 of the Coupled Model Intercomparison Project model ensembles: one ensemble includes both natural and anthropogenic forcings [the twentieth-century (20C) ensemble] and the other ensemble only contains natural climate variability (the control ensemble). The OLR trend in the 20C simulations tends to be more negative than observed, although a majority is found to be within the observational uncertainty. Conversely, the response of the clear-sky OLR to SST is shown to be very similar in observations and models. Therefore, the trend differences between the 20C simulations and observations are likely because of internal climate variability or uncertainties in the external forcings. The observed increase in GHE is shown to be inconsistent with the control ensemble, indicating that anthropogenic forcings are required to reproduce the observed changes in GHE.
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HIRTH, ULRICH MARTIN. "From GEM back to Dirichlet via Hoppe's Urn". Combinatorics, Probability and Computing 6, n.º 2 (junio de 1997): 185–95. http://dx.doi.org/10.1017/s0963548396002842.
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In generalisation of the beta law obtained under the GEM/Poisson–Dirichlet distribution in Hirth [12] we undertake here an analogous construction which results in the Dirichlet law. Our proof makes use of Hoppe's Pólya-like urn model in population genetics.
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Müller, T. G., M. Burgdorf, V. Alí-Lagoa, S. A. Buehler y M. Prange. "The Moon at thermal infrared wavelengths: a benchmark for asteroid thermal models". Astronomy & Astrophysics 650 (junio de 2021): A38. http://dx.doi.org/10.1051/0004-6361/202039946.
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Thermal-infrared measurements of asteroids, satellites, and distant minor bodies are crucial for deriving the objects’ sizes, albedos, and in some cases, also the thermophysical properties of the surface material. Depending on the available measurements and auxiliary data, such as visual light curves, spin and shape information, or direct size measurements from occultations or high-resolution imaging techniques, a range of simple to complex thermal models are applied to achieve specific science goals. However, testing these models is often a difficult process and the uncertainties of the derived parameters are not easy to estimate. Here, we make an attempt to verify a widely accepted thermophysical model (TPM) against unique thermal infrared (IR), full-disk, and well-calibrated measurements of the Moon. The data were obtained by the High-resolution InfraRed Sounder (HIRS) instruments on board a fleet of Earth weather satellites that serendipitously scan the surface of the Moon. We found 22 Moon intrusions, taken in 19 channels between 3.75 μm and 15.0 μm, and over a wide phase angle range from −73.1° (waxing Moon) to +73.8° (waning Moon). These measurements include the entire Moon in a single pixel, seen almost simultaneously in all bands. The HIRS filters are narrow and outside the wavelength regime of the Christiansen feature. The similarity between these Moon data and typical asteroid spectral-IR energy distributions allows us to benchmark the TPM concepts and to point out problematic aspects. The TPM predictions match the HIRS measurements within 5% (10% at the shortest wavelengths below 5 μm) when using the Moon’s known properties (size, shape, spin, albedo, thermal inertia, roughness) in combination with a newly established wavelength-dependent hemispherical emissivity. In the 5–7.5 μm and in the 9.5–11 μm ranges, the global emissivity model deviates considerably from the known lunar sample spectra. Our findings will influence radiometric studies of near-Earth and main-belt asteroids in cases where only short-wavelength data (from e.g., NEOWISE, the warm Spitzer mission, or ground-based M-band measurements) are available. The new, full-disk IR Moon model will also be used for the calibration of IR instrumentation on interplanetary missions (e.g., for Hayabusa-2) and weather satellites.
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KAMINSKYY, ROMA, NATALIYA SHAKHOVSKA y BOHDAN KHUDOBA. "FRACTAL ANALYSIS OF MODELS OF TEXTS OF DIFFERENT STYLES SUBMITTED INTEGER EQUIDISTANT SEQUENCES NUMBER OF LETTERS IN WORDS". HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 295, n.º 2 (mayo de 2021): 26–34. http://dx.doi.org/10.31891/2307-5732-2021-295-2-26-34.
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This paper presents the results of fractal analysis of models of texts of different styles. Integer numerical sequences, the elements of which are the number of letters in the words of the text, are used as models. An algorithm for calculating the exact value of the fractal dimension is presented, which provided the determination of the exact value of the Hirst index. In addition, the value of the power dependence constant R / S is calculated. The obtained indicators in the aspect of fractality fully describe the objects of research. This method is in fact a logical implementation of the known procedures of fractal analysis and its advantage is that it provides a rigorous mathematical representation of the values of the fractal dimension, the Hirst index and the constant in relation to the indicators of variation. The essence of his presentation is, first of all, as a warning to researchers against misinterpretation of the relationship R / S, because many researchers ignore the existence of a constant for this relationship. Indeed, this relation is a function with two unknown parameters and cannot be directly determined. With regard to the fractal dimension, we can point out that the least important is the conversational style, and the most – poetic. In other words, the model of colloquial text is the smallest part of its environment, poetic – the largest. From the point of view of Hirst’s index, the model of the spoken text contains a trend, while the model of the poem has a character closer to the random one. The largest scope of the cumulative series has a model of spoken text, and the smallest – a model of artistic style of the text. Since the cumulative series is a sequential (cumulative) summation of the sequence of deviations of elements from its arithmetic mean, its scope will depend on the presence of groups of elements of the sequence with very large deviations. Artistic style has the least significance of scope.
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Cao, Changyong, Mitch Goldberg y Likun Wang. "Spectral Bias Estimation of Historical HIRS Using IASI Observations for Improved Fundamental Climate Data Records". Journal of Atmospheric and Oceanic Technology 26, n.º 7 (1 de julio de 2009): 1378–87. http://dx.doi.org/10.1175/2009jtecha1235.1.
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Abstract A prerequisite for climate change detection from satellites is that the measurements from a series of historical satellites must be consistent and ideally made traceable to the International System of Units (SI). Unfortunately, this requirement is not met for the 14 High Resolution Infrared Radiation Sounders (HIRS) on the historical NOAA satellites, because the instrument was developed for weather forecasts and lacks accuracy and consistency across satellites. It is well known that for HIRS, differences in the spectral response functions (SRF) between instruments and their prelaunch measurement uncertainties often lead to observations of the atmosphere at different altitudes. As a result of the atmospheric lapse rate, they both can introduce significant intersatellite biases. The SRF-dependent biases are further mixed with other effects such as the diurnal cycle because of observation time differences and orbital drifts, on board calibration, and algorithm issues. In this study, the Infrared Atmospheric Sounding Interferometer (IASI) observations are used to calculate the radiances for the 14 Television Infrared Observation Satellite series N (TIROS-N; to MetOp-A) HIRS instruments in different climate regimes and seasons to separate the SRF-induced intersatellite biases from other factors. It is found that the calculated radiance ratio (a bias indicator) using IASI observations for the HIRS satellite pairs forms bell-shaped curves that vary with the HIRS model and channel as well as climate regimes. This suggests that a bias found in the polar regions at the Simultaneous Nadir Overpass (SNO) cannot be blindly used for bias correction globally; instead, the IASI/HIRS spectral bias bell curves should be used as a complement to more fully address the biases. These bell curves also serve as lookup charts for separating the bias due to true SRF differences from that caused by SRF prelaunch measurement errors to resolve the inconsistency, which sheds new light on reprocessing and reanalysis in generating fundamental climate data records from HIRS.
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Khadijah, Arlina, Miftahul Jannah Addaudy y Maisarah. "The Effect of Edutainment Learning Model on Early Childhood Socio-emotional Development". JPUD - Jurnal Pendidikan Usia Dini 15, n.º 2 (30 de noviembre de 2021): 201–20. http://dx.doi.org/10.21009/jpud.152.01.
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The idea of edutainment began to become the interest of early childhood educators to make the learning process more holistic, including knowledge about how the brain works, memory, motivation, self-image, emotions, learning styles, and other learning strategies. This study aims to analyse and compare the effect of edutainment and group learning on the socio-emotional development of early childhood. This research method uses a quasi-experimental design with data collection techniques derived from the results of the pre-test and post-test on 20 children. The results of this study indicate that there are differences in the influence of edutainment learning with the control group on the social-emotional development of early childhood. Although both groups affect the socio-emotional development, edutainment learning has a better effect than the control group. For further research, it is recommended to create various types of edutainments learning to improve various aspects of children development.
Keywords: Early Childhood, Edutainment Learning Model, Socio-emotional Development
References:
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Wei, G. Z. y H. Q. Nie. "Local approach to the ferromagnetic ground state in the Hubbard-Hirsch model". Physical Review B 46, n.º 14 (1 de octubre de 1992): 8954–57. http://dx.doi.org/10.1103/physrevb.46.8954.
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Siudem, Grzegorz, Barbara Żogała-Siudem, Anna Cena y Marek Gagolewski. "Three dimensions of scientific impact". Proceedings of the National Academy of Sciences 117, n.º 25 (8 de junio de 2020): 13896–900. http://dx.doi.org/10.1073/pnas.2001064117.
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The growing popularity of bibliometric indexes (whose most famous example is thehindex by J. E. Hirsch [J. E. Hirsch,Proc. Natl. Acad. Sci. U.S.A.102, 16569–16572 (2005)]) is opposed by those claiming that one’s scientific impact cannot be reduced to a single number. Some even believe that our complex reality fails to submit to any quantitative description. We argue that neither of the two controversial extremes is true. By assuming that some citations are distributed according to the rich get richer rule (success breeds success, preferential attachment) while some others are assigned totally at random (all in all, a paper needs a bibliography), we have crafted a model that accurately summarizes citation records with merely three easily interpretable parameters: productivity, total impact, and how lucky an author has been so far.
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Luz, Cicero Krupp da y Eduardo Henrique Lopes Figueiredo. "REVISITANDO MARX: UMA NARRATIVA CRÍTICA DA FORMA DO ESTADO CAPITALISTA DESDE DE JOACHIM HIRSCH". Revista Direitos Culturais 12, n.º 28 (9 de febrero de 2018): 183. http://dx.doi.org/10.20912/rdc.v12i28.2465.
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<p>O objetivo desse ensaio é uma aproximação das investigações sobre o Estado desenvolvidas por Joachim Hirsch, em especial, que considerem proposições críticas às teorias ortodoxas do materialismo histórico. A forma e a função estatais são exploradas na teoria do Estado capitalista, incluindo um auxílio do modelo de Hirsch, onde os limites do constitucionalismo social residem na possibilidade interventiva, necessária e constitutiva da experiência política aplacadora da exclusão social, porquanto é o Estado capitalista pressuposto, também exigente de intervenções que o institui em uma ‘forma’ política entre as relações sociais. Diante disso, propomos associar brevemente essas ideias com a crise do Estado brasileiro da segunda década do século XXI. </p>
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Zhang, Bin, Changyong Cao, Tung-Chang Liu y Xi Shao. "Spectral Recalibration of NOAA HIRS Longwave CO2 Channels toward a 40+ Year Time Series for Climate Studies". Atmosphere 12, n.º 10 (9 de octubre de 2021): 1317. http://dx.doi.org/10.3390/atmos12101317.
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The High-Resolution Infrared Radiation Sounder (HIRS) on NOAA and MetOp A/B satellites has been observing the Earth continuously for over four decades, providing essential data for operational numerical weather prediction, retrieval of atmospheric vertical profile, and total column information on atmospheric temperature, moisture, water vapor, ozone, cloud climatology, and other geophysical parameters globally. Although the HIRS data meets the needs of the short-term weather forecast, there are inconsistencies when the long-term decadal time series is used for time series analysis. The discrepancies are caused by several factors, including spectral response differences between the HIRS models on the satellites and spectral response uncertainties and other calibration issues. Previous studies have demonstrated that significant improvements can be achieved by recalibrating some of the HIRS longwave CO2 channels (Channels 4, 5, 6, and 7), which has helped make the time series more consistent. The current study aims to extend the previous study to the remaining longwave infrared sounding channels, including Channels 1, 2, 3, and 8, using a similar approach. Similar to previous findings, the spectral shift of the HIRS bands has helped improve the consistency in the time series from NOAA-06 to MetOp-A and B for these channels. We also found that HIRS channels on MetOp-B also have bias relative to Infrared Atmospheric Sounding Interferometer (IASI) on the same satellite, especially Channel 4, and a spectral shift significantly reduced the bias. To bridge the observation gap in time series in the mid-1980s between NOAA-07 and NOAA-09, the global mean method has been used since no transfer radiometers between them was available for this period, and the spectral response function corrections, therefore, can be applied to the earliest satellites (NOAA-06) for these channels. The recalibration parameters have been provided to other scientists at the University of Wisconsin for improving the time series in their long-term studies using historical HIRS data and are now made available to the science community.
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Marhun, M. "Building blocks play: Model reconstruction, teacher’s guidance and early childhood creativity". Journal of Early Childhood Care and Education 3, n.º 1 (21 de mayo de 2020): 14. http://dx.doi.org/10.26555/jecce.v3i1.1763.
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Teachers in ECE (Early Childhood Education) should have the knowledge and skills in guiding children when playing blocks, but this is not shared by most PAUD teachers in Indonesia. Therefore, this study develops a block play model that refers to the PKPK model from Hirsch and Dodge with the adjustment of conditions in Indonesia. This research is a research and development (R&D) that seeks to develop, refine (re-construct), test, and validate Masnipal-models that are easy for teachers to use and effectively develop children's creativity. This study begins with testing the PKPK model to a group of subjects to obtain data about the ability of teachers to understand and apply the model. After revisions and improvements, the model of reconstruction results was further tested. Research subjects were PAUD teachers in Cianjur (n = 42) and Bandung (n = 78). Data collection uses observation and peer assessment techniques and data analysis uses descriptive analysis techniques. The novelty of this study is the resulting Masnipal-model that facilitates PAUD teachers in Indonesia in guiding children to develop creativity through block play.
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Biwole Fouda, Jean y Irène Abessolo Abessolo. "Stakeholder performance, corporate social performance". Society and Business Review 14, n.º 3 (11 de octubre de 2019): 242–53. http://dx.doi.org/10.1108/sbr-06-2018-0062.
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Purpose The purpose of this paper is to find out what added value does the stakeholder performance concept bring with respect to that of corporate social performance. To better understand the developments of these concepts, the authors resort to Gallie’s theory (1956) of essentially contested concepts, the life-cycle model of Hirsch and Levin’s (1999) umbrella concepts. Reconciling these two theoretical frameworks allows us to introduce the competing category notion consisting of a dominant and a dominated-type concepts. Through a historical and synchronic literature examination, CSP is shown to have characteristics of the dominant type, thanks to its more diffuse character. On the other hand, the stakeholder performance would relate to the dominated type, though it provides better operationalization possibilities. Design/methodology/approach To better understand the developments of these concepts, Gallie’s theory (1956) of essentially contested concepts, the life cycle model of Hirsch and Levin’s (1999) umbrella concepts are used. Findings CSP has characteristics of the dominant type, thanks to its more diffuse character. On the other hand, the stakeholder performance relates to the dominated type, though it provides better operationalization. Originality/value CSP as a dominant type and stakeholder performance is a dominated type.
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Jiang, Hanjie, Ye Zhou, Hann Woei Ho y Elmi Abu Bakar. "Modeling of two-stroke aviation piston engines for control applications". Advances in Mechanical Engineering 15, n.º 2 (febrero de 2023): 168781322311532. http://dx.doi.org/10.1177/16878132231153234.
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Two-stroke Aviation Piston Engines are multivariable systems with severe non-linear dynamics, making their modeling challenging for control engineers. Although many studies have been conducted on simplified modeling of four-stroke gasoline engines and large-scale two-stroke diesel engines for automobiles and ships, only a few have focused on the general modeling of small two-stroke aviation engines. Thus, extensive research on a general modeling method for two-stroke aviation engines is required. A general non-linear Mean Value Engine Model (MVEM) of two-stroke aviation piston engines is developed. Various parts of the model are represented by appropriate empirical equations that require little engine data and easily fit different engines. The objective is to develop a general and accurate method for rapid engine modeling that captures the main dynamics and can create control systems for two-stroke aviation piston engines. The model is validated using HIRTH-3203 and NU-57 measurement data, and the results show that the issues of fitting simplicity and general applicability are well addressed. Finally, the air-fuel ratio control based on the model predictive control method is carried out on the HIRTH-3203 MVEM, which demonstrates the effectiveness of the proposed MVEM in the controller design and evaluation. The proposed model may support the application of new control technologies, such as adaptive control and intelligent control, in the two-stroke aviation piston engine systems.
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D’Souza, Rohan J. y Dara W. Childs. "A Comparison of Rotordynamic-Coefficient Predictions for Annular Honeycomb Gas Seals Using Three Different Friction-Factor Models". Journal of Tribology 124, n.º 3 (31 de mayo de 2002): 524–29. http://dx.doi.org/10.1115/1.1456086.
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A two-control-volume bulk-flow model is used to predict rotordynamic coefficients for an annular, honeycomb-stator/smooth-rotor gas seal. The bulk-flow model uses Hirs’ turbulent-lubrication model, which requires a friction factor model to define the shear stresses at the rotor and stator wall. Rotordynamic coefficients predictions are compared for the following three variations of the Blasius pipe-friction model: (i) a basic model where the Reynolds number is a linear function of the local clearance, fs=ns Rems (ii) a model where the coefficient is a function of the local clearance, and (iii) a model where both the coefficient and exponent are functions of the local clearance. The latter models are based on data that shows the friction factor increasing with increasing clearances. Rotordynamic-coefficient predictions shows that the friction-factor-model choice is important in predicting the effective-damping coefficients at a lower frequency range (60∼70 Hz) where industrial centrifugal compressors and steam turbines tend to become unstable. At a higher frequency range, irrespective of the friction-factor model, the rotordynamic-coefficient predictions tend to coincide. Blasius-based Models which directly account for the observed increase in stator friction factors with increasing clearance predict significantly lower values for the destabilizing cross-coupled stiffness coefficients.