The Experts below are selected from a list of 172527 Experts worldwide ranked by ideXlab platform
Dawn S Carlson - One of the best experts on this subject based on the ideXlab platform.
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measuring the positive side of the work family interface development and validation of a work family enrichment scale
Journal of Vocational Behavior, 2006Co-Authors: Dawn S Carlson, Michele K Kacmar, Julie Holliday Wayne, Joseph G GrzywaczAbstract:Abstract Based on current conceptualizations of enrichment, or the positive side of the work–family interface, a multi-dimensional measure of work–family enrichment is developed and validated using five samples. The final 18 item measure consists of three dimensions from the work to family direction (development, affect, and capital) and three dimensions from the family to work direction (development, affect, and efficiency). The validity of the scale was established by assessing the content adequacy, dimensionality, Reliability, Factor structure invariance, convergent validity, divergent validity, and its relationship to work and family correlates.
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construction and initial validation of a multidimensional measure of work family conflict
Journal of Vocational Behavior, 2000Co-Authors: Dawn S Carlson, Michele K Kacmar, Larry J WilliamsAbstract:Abstract This manuscript reports on three studies that utilized five different samples ( N = 1211) to construct and validate a multidimensional measure of work–family conflict. The six dimensions of conflict measured include the combination of three forms of work–family conflict (time, strain, and behavior) and two directions of work–family conflict (work interference with family and family interference with work). The three studies assessed the content adequacy, dimensionality, Reliability, Factor structure invariance, and construct validity of the scale. The design of the final scale provides future researchers the flexibility to measure any of the six dimensions of work–family conflict individually.
Ulrike Ravenssieberer - One of the best experts on this subject based on the ideXlab platform.
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development and evaluation of the promis pediatric positive affect item bank child report and parent proxy editions
Journal of Happiness Studies, 2018Co-Authors: Christopher B Forrest, Ulrike Ravenssieberer, Janine Devine, Brandon D Becker, Rachel E Teneralli, Jeanhee Moon, Adam C Carle, Carole A Tucker, Katherine B BevansAbstract:The purpose of this study is to describe the psychometric evaluation and item response theory (IRT) calibration of the PROMIS Pediatric Positive Affect item bank, child-report and parent-proxy editions. The initial item pool comprising 53 items, previously developed using qualitative methods, was administered to 1874 children 8–17 years old and 909 parents of children 5–17 years old. Analyses included descriptive statistics, Reliability, Factor analysis, differential item functioning, and construct validity. A total of 14 items were deleted, because of poor psychometric performance, and an 8-item short form constructed from the remaining 39 items was administered to a national sample of 1004 children 8–17 years old, and 1306 parents of children 5–17 years old. The combined sample was used in IRT calibration analyses. The final item bank appeared unidimensional, the items appeared locally independent, and the items were free from differential item functioning. The scales showed excellent Reliability and convergent and discriminant validity. Positive affect decreased with children’s age and was lower for those with a special health care need. After IRT calibration, we found that 4 and 8 item short forms had a high degree of precision (Reliability) across a wide range of the latent trait (>4 SD units). The PROMIS Pediatric Positive Affect item bank and its short forms provide an efficient, precise, and valid assessment of positive affect in children and youth.
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development and psychometric evaluation of the promis pediatric life satisfaction item banks child report and parent proxy editions
Quality of Life Research, 2018Co-Authors: Christopher B Forrest, Janine Devine, Brandon D Becker, Rachel E Teneralli, Jeanhee Moon, Adam C Carle, Carole A Tucker, Katherine B Bevans, Ulrike RavenssiebererAbstract:To describe the psychometric evaluation and item response theory calibration of the PROMIS Pediatric Life Satisfaction item banks, child-report, and parent-proxy editions. A pool of 55 life satisfaction items was administered to 1992 children 8–17 years old and 964 parents of children 5–17 years old. Analyses included descriptive statistics, Reliability, Factor analysis, differential item functioning, and assessment of construct validity. Thirteen items were deleted because of poor psychometric performance. An 8-item short form was administered to a national sample of 996 children 8–17 years old, and 1294 parents of children 5–17 years old. The combined sample (2988 children and 2258 parents) was used in item response theory (IRT) calibration analyses. The final item banks were unidimensional, the items were locally independent, and the items were free from impactful differential item functioning. The 8-item and 4-item short form scales showed excellent Reliability, convergent validity, and discriminant validity. Life satisfaction decreased with declining socio-economic status, presence of a special health care need, and increasing age for girls, but not boys. After IRT calibration, we found that 4- and 8-item short forms had a high degree of precision (Reliability) across a wide range (>4 SD units) of the latent variable. The PROMIS Pediatric Life Satisfaction item banks and their short forms provide efficient, precise, and valid assessments of life satisfaction in children and youth.
Larry J Williams - One of the best experts on this subject based on the ideXlab platform.
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construction and initial validation of a multidimensional measure of work family conflict
Journal of Vocational Behavior, 2000Co-Authors: Dawn S Carlson, Michele K Kacmar, Larry J WilliamsAbstract:Abstract This manuscript reports on three studies that utilized five different samples ( N = 1211) to construct and validate a multidimensional measure of work–family conflict. The six dimensions of conflict measured include the combination of three forms of work–family conflict (time, strain, and behavior) and two directions of work–family conflict (work interference with family and family interference with work). The three studies assessed the content adequacy, dimensionality, Reliability, Factor structure invariance, and construct validity of the scale. The design of the final scale provides future researchers the flexibility to measure any of the six dimensions of work–family conflict individually.
Michele K Kacmar - One of the best experts on this subject based on the ideXlab platform.
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measuring the positive side of the work family interface development and validation of a work family enrichment scale
Journal of Vocational Behavior, 2006Co-Authors: Dawn S Carlson, Michele K Kacmar, Julie Holliday Wayne, Joseph G GrzywaczAbstract:Abstract Based on current conceptualizations of enrichment, or the positive side of the work–family interface, a multi-dimensional measure of work–family enrichment is developed and validated using five samples. The final 18 item measure consists of three dimensions from the work to family direction (development, affect, and capital) and three dimensions from the family to work direction (development, affect, and efficiency). The validity of the scale was established by assessing the content adequacy, dimensionality, Reliability, Factor structure invariance, convergent validity, divergent validity, and its relationship to work and family correlates.
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construction and initial validation of a multidimensional measure of work family conflict
Journal of Vocational Behavior, 2000Co-Authors: Dawn S Carlson, Michele K Kacmar, Larry J WilliamsAbstract:Abstract This manuscript reports on three studies that utilized five different samples ( N = 1211) to construct and validate a multidimensional measure of work–family conflict. The six dimensions of conflict measured include the combination of three forms of work–family conflict (time, strain, and behavior) and two directions of work–family conflict (work interference with family and family interference with work). The three studies assessed the content adequacy, dimensionality, Reliability, Factor structure invariance, and construct validity of the scale. The design of the final scale provides future researchers the flexibility to measure any of the six dimensions of work–family conflict individually.
R K Rastsvetaeva - One of the best experts on this subject based on the ideXlab platform.
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new data on the isomorphism in eudialyte group minerals x crystal structure of the intermediate member of the raslakite sergevanite series
Crystallography Reports, 2021Co-Authors: R K Rastsvetaeva, N V ChukanovAbstract:An intermediate member of the raslakite–sergevanite solid-solution series has been investigated by X-ray diffraction analysis, electron probe microanalysis, and IR spectroscopy. The trigonal unit-cell parameters of the mineral are found to be a = 14.208(1) A, c = 30.384(1) A, and V = 5311.80(6) A3; sp. gr. R3. The crystal structure is refined to the final Reliability Factor R = 4.59% in the anisotropic approximation of atomic displacements using 3394 reflections with F > 3σ(F). The idealized formula of the mineral (Z = 3) is [Na12(H3O)2][Ca3(Fe1.5Mn1.5)]Zr3[Na2Zr][Si26O72]OH4. Splitting of the site of six-membered ring of octahedra, occupied mainly by Fe and Mn, has been established for the first time. The problems of the genesis of calcium-poor eudialyte-group minerals are discussed.
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new data on the isomorphism in eudialyte group minerals iх blocky isomorphism at key sites crystal structure of fe deficient eudialyte from the khibiny massif
Crystallography Reports, 2021Co-Authors: R K Rastsvetaeva, N V Chukanov, D V LisitsinAbstract:The crystal structure and crystallochemical features of Fe-deficient manganese-rich eudialyte from the Khibiny massif (Kola Peninsula) have been investigated by X-ray diffraction analysis, electron probe microanalysis, and IR spectroscopy. The trigonal unit-cell parameters of the mineral are found to be a = 14.199(1) A, c = 30.305(1) A, and V = 5291.2(2) A3; sp. gr. R3m. The crystal structure is refined to the final Reliability Factor R = 4.46% in the anisotropic approximation of atomic displacements, using 1937 reflections with F > 3σ(F). The idealized crystallochemical formula of the mineral (Z = 3, Roman numerals indicate the coordination numbers (CNs) of cations in the key sites) is N1–5(Na,H3O) $$_{{15}}^{{{\text{V}}-{\text{X}}}}$$ M1(Ca,Mn) $$_{6}^{{{\text{VI}}}}$$ M2(FeIV,NaVI,NaV,MnVII,MnV)3 M3(SiIV,NbVI) M4SiIV Z(Zr,Ti) $$_{3}^{{{\text{VI}}}}$$ [Si24O72] (OH,Cl,SO4)3 (H2O,OH) ⋅ 1.5H2O. The regularities of block isomorphism in eudialyte-group minerals are discussed.
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new data on the isomorphism in eudialyte group minerals viii crystal structure of the fe 2 analog of feklichevite a potentially new mineral from the khibiny massif
Crystallography Reports, 2020Co-Authors: R K Rastsvetaeva, N V Chukanov, L V Sipavina, M V VoroninAbstract:A potentially new calcium-rich eudialyte-group mineral from the Khibiny massif has been investigated by X-ray diffraction (XRD) analysis. The trigonal unit-cell parameters are found to be as follows: a = 14.221(1) A, c = 30.04(1) A, and V = 5261.3 A3; sp. gr. R3m. The crystal structure is refined to the final Reliability Factor R = 2.8% in the anisotropic approximation of atomic displacements, using 1714 reflections with F > 3σ(F). The idealized formula of the mineral (Z = 3) is (Na12Ca3)Ca6Fe $$_{3}^{{2 + }}$$ Zr3NbSi25O75(H2O,OH,F,Cl)3. The dominance of divalent iron form is confirmed by Mossbauer spectroscopy data. The closest analog of the mineral under study is feklichevite from the Kovdor alkaline massif; the main difference is the dominance of divalent iron over trivalent iron in the former.
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new data on the isomorphism in eudialyte group minerals vii crystal structure of the eudialyte sergevanite series mineral from the lovozero alkaline massif
Crystallography Reports, 2020Co-Authors: R K Rastsvetaeva, N V Chukanov, K V VanAbstract:An intermediate member of the eudialyte–sergevanite solid-solution series has been investigated by X-ray diffraction analysis, electron probe microanalysis, and IR spectroscopy. The trigonal unit-cell parameters of the mineral are found to be a = 14.1944(4) A, c = 30.294(1) A, and V = 5286.0(3) A3; sp. gr. R3. The crystal structure is refined to the final Reliability Factor R = 4.48% in the anisotropic approximation of atomic displacements, using 2420 reflections with F > 3σ(F). The idealized formula of the mineral (Z = 3) is Na14Sr(Ca3Mn3)(Na2Fe)Zr3Si26O72(OH)3Cl · H2O. An increase in the Ca and Fe contents in comparison with the holotype sergevanite does not increase symmetry. The problems of genesis of calcium-poor minerals with eudialyte-type structure are discussed.
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new data on the isomorphism in eudialyte group minerals vi crystal structure of the first member containing sulfide anion with isomorphic substitution cl s 2
Crystallography Reports, 2020Co-Authors: R K Rastsvetaeva, N V Chukanov, Igor V Pekov, D A Varlamov, Sergey M AksenovAbstract:An eudialyte-group representative containing S2– sulfide anion has been investigated by X-ray diffraction analysis, electron-probe microanalysis, and IR spectroscopy. The unit-cell parameters are found to be a = 14.2156(3) A, c = 30.405(1) A, and V = 5321.16(3) A3; sp. gr. R3m. The crystal structure is refined to the final Reliability Factor R = 3.9% in the anisotropic approximation of atomic displacements using 2158 reflections with F > 3σ(F). The idealized formula of the mineral (Z = 3) is [(Na,Н3О)14Sr]Ca6(Mn2Na)Zr3[Si26O72](OH)3S2– · 2H2O. The problems of mineral origin and presence of sulfide sulfur in the minerals with eudialyte-type structure are discussed.