The Van Vechten genealogy /

Mode of access: Internet.

Portrait of a Man, probably a Member of the Van Beresteyn Family

Rembrandt van Rijn; 3 ft. 8 1/64 in.x 2 ft. 11 in.; oil on canvas

Portrait of a Woman, probably a Member of the Van Beresteyn Family

Rembrandt van Rijn; 3 ft. 8 1/64 in.x 2 ft. 11 in.; oil on canvas

The Van Cortlandt family papers /

Includes bibliographical references and index.

William Van Every fonds, 1784, 1804-1806, 1815-1816, 1828, 1832, n.d.

William Van Every, son of McGregory and Mary Wilcox (Jaycocks) Van Every, was born in New York state in 1765. During the Revolutionary War he joined Butler’s Rangers and served under Captain John McDonnell. He was granted three lots of land in the Township of Niagara, with additional lands granted at later dates. William married Elizabeth, daughter of George Young. Elizabeth was the widow of Col. Frederick Dochstader and mother of Catherine Dochstader, b. 1781. William Van Every died in 1832, his wife Elizabeth in 1851. Both are buried in the Warner Cemetery, in present day Niagara Falls. The children of William Van Every and Elizabeth Young were Mary, Elizabeth, Phoebe, John, Peter, William, Rebecca, Samuel and Joseph. Source: Mary Blackadar Piersol, The Records of the Van Every Family, Toronto : Best Printing, 1947. And, Patricia M. Orr, Historic Woodend, sponsored by Niagara Peninsula Conservation Authority, 1980?

Effectiviteit van Preventieve Interventies op het Gezinsfunctioneren bij hoogangstige Kinderen

Het doel van dit onderzoek is inzicht geven in het effect van preventieve angstinterventies op verschillende stijlen (algeheel, functioneel, disfunctioneel) van het gezinsfunctioneren bij hoogangstige kinderen en hun ouders. De proefpersonen (N = 2494) werden gerekruteerd op basisscholen. Uiteindelijk bleven 150 respondenten over. Deze respondenten bestaan uit 70 (46.7%) jongens en 80 (53.3%) meisjes. De respondenten zijn kinderen van 8 tot 13 jaar. De gemiddelde leeftijd van de respondenten is 9.83 jaar (SD = 1.14), de jongste is 8 en de oudste is 13 jaar. De screeningsprocedure is uitgevoerd met de kindversie van de zelfrapportage vragenlijst Screen for Child Anxiety Related Emotional Disorders. Na screening werden de hoogangstige kinderen en hun ouders gerandomiseerd over de drie onderzoekscondities. Daarnaast werd aan de deelnemers gevraagd de Family Functioning Scale in te vullen. Maximaal 3 maanden na de screening vond de voormeting plaats bij kinderen en ouders, hierna vond na maximaal 6 weken de interventie plaats. Na de voormeting volgden de follow-up metingen na respectievelijk 1 en 2 jaar. Om de variabele angst te meten is gebruik gemaakt van de Screen for Child Anxiety Related Emotional Disorder (SCARED-71; Bodden, Bögels, & Muris, 2009). Om de variabele gezinsfunctioneren te meten is gebruik gemaakt van de Family Functioning Scale (FFS; Bloom, 1985). De resultaten lieten zien dat het gezinsfunctioneren bij hoogangstige kinderen en hun ouders niet verbetert na het volgen van een interventie of geen interventie. Daarnaast is geen verschil in effectiviteit gevonden tussen de kind- of oudergerichte interventie op de verschillende aspecten van het gezinsfunctioneren.

The influence of bond valence on bond covalency in RMn2O5 (R=La, Pr, Nd, Sm, Eu)

The relationship between bond valence and bond covalency in RMn2O5 (R = La, Pr, Nd, Sm, Eu) has been investigated by a semiempirical method. This method is the generalization of the dielectric description theory of Phillips, Van Vechten, Levine and Tanaka scheme. The results indicate that larger valences usually result in higher bond covalencies, in good agreement with the point that the excess charge in the bonding region is the origin of formation of bond covalency. Other factors, such as oxidation state of elements, only make a small contribution to bond covalency.

Bond covalencies in R2BaCuO5 (R = Sm, Gd, Dy, Ho, Y, Er, Tm, Yb, Lu)

Bond covalencies in R2BaCuO5 (R = Sm, Gd, Dy, Ho, Y, Er, Tm, Yb, Lu) were calculated by means of a semiempirical method. This method is the generalization of the dielectric description theory of Phillips-Van Vechten-Levine-Tanaka scheme. The present paper presents the formula concerning the decomposing of complex crystals which are usually anisotropic systems into the sum of binary crystals which are isotropic systems. It can be seen that although the bond covalency is related to many physical quantities, it is mainly influenced by bond valence or bond charge, and a higher bond valence will produce higher bond covalency.

Semiempirical method for the evaluation of bond covalency in complex crystals

We report a semiempirical method for the evaluation of bond covalency in complex crystals. This method is the extension of the dielectric description theory delivered by Phillips, Van Vechten, Levine, and Tanaka (PVLT) which is mainly suitable for binary crystals. Our method offers the advantage of applicability to a broad class of complex materials. The simplicity of the approach allows a broader class of researchers to access the method easily and to calculate not only the bond covalency but also other useful. properties such as bulk modulus. For a series study, a useful trend can be illustrated and often the prediction of the properties of the-missing one(s) among the series can be possible. Finally, examples are given to show how the method is applied and the procedure is transferable to other complex crystals.

Calculation of chemical bond parameters in La1-xCaxCrO3 (0.0 <= x <= 0.3)

The chemical bond parameters, that is, bond covalency, bond susceptibility, and macroscopic linear susceptibility of La1-xCaxCrO3 (x = 0.0, 0.1, 0.2, 0.3) has been calculated using a semiempirical method. This method is the generalization of the dielectric description theory proposed by Phillips, Van Vechten, Levine, and Tanaka (PVLT). In the calculation of bond valence, two schemes were adopted. One is the bond valence sums (BVS) scheme, and the other is the equal-valence scheme. Both schemes suggest that for the title compounds bond covalency and bond susceptibility are mainly influenced by bond valence and are insensitive to the Ca doping level or structural change. Larger bond valences usually result in higher bond covalency and bond susceptibility. The macroscopic linear susceptibility increases (only slightly for BVS scheme) with the increasing Ca doping level. (C) 1999 John Wiley & Sons, Inc.

Influence of bond valence on bond covalency in calcium doped lanthanum chromite

The influence of bond valence on bond covalency in La1-xCaxCrO3(x =0.0, 0.1, 0.2, 0.3) has been studied by using semiempirical method. This method is the extension of the dielectric description theory proposed by Phillips, Van Vechten, levine and Tanaka (PVLT). In the calculation of bond valence, two schemes were adopted. The first is the equal-valence scheme, and the second is Bond Valence Sums (BVS) scheme. Both schemes suggest that for the title compound bond covalency be mainly influenced by bond valence, and insensitive to the Ca doping level. Generally speaking, larger bond valences usually result in higher bond covalencies.

Semiempirical study on the valences of Cu and bond covalency in Y1-xCaxBa2Cu3O6+y

The valences of Cu and bond covalencies in Y1-xCaxBa2Cu3O6+y, have been investigated using complex chemical bond theory, This theory is the generalization of Phillips, Van Vechten, Levine, and Tanaka's scheme. The results indicate that the valences of Cu(1) and Cu(2) in our calculation agree well with those obtained by the bond valence sum method. The valences of Cu(1) and Cu(2) in our calculation also suggest that the holes introduced by Ca substitution only reside in CuO2 planes and there is a competing mechanism for the hole density in CuO2 planes between,Ca doping and oxygen depletion. These conclusions are in satisfactory agreement with experiments. The calculated ordering of covalencies is Cu(1)-O(4)>Cu(1)-O(1)>Cu(2)-O(2,3)>Cu(2)-O(1)>Ca-O>Y-O similar to Ba-O, regardless of the Ca doping level and oxygen content. [S0163-1829(98)03325-6].

Bond-charge calculation of electro-optic coefficients of diatomic crystals

A theoretical method has been set up to calculate the electrooptic tensor coefficients r(ijk), based on the Phillips-Van Vechten (PV) dielectric theory and the Levine bond charge model, Starting from the crystal structure data and only introducing the experimentally determined optical permittivity and dielectric constant, the electro-optic tensor coefficients r(ijk) can be quantitatively predicted, The theoretical calculations are in good agreement with experiment in the case of zinc blende and wurtzite crystals, For zinc blende crystals, the effects of covalent radii on the linear electro-optic coefficients are discussed. (C) 1997 Academic Press.

CHEMICAL-BONDS AND DIELECTRIC-CONSTANTS OF REM (RE=RARE EARTH, M=N, P, AS, SB) CRYSTALS

By using Pillips and van Vechten theory, the chemical bond parameters and dielectric constants of REM (RE=rare earth, M=N, P, As, Sb) crystals were calculated. The values calculated of dielectric constants agree with the experimental values.

Dianna Hostetter funeral invitation, 1861

The invitation is a request of Jacob Hostetter to his friends and acquaintances to attend the funeral of his wife, Dianna on Tuesday, October 29, 1861. Dianna, also known as Dinah, was the second daughter of Joseph and Mary Heslop Van Every. She was born in 1831 and married Jacob Hostetter of Grantham Township. Jacob died a year later, leaving two children, Joseph Blain Hostetter (1860-1896) and Laura Diana Hostetter (1861-1933). Jacob was the son of Capt. Herman Hostetter of Ten Mile Creek who had died from wounds received at the Battle of Queenston Heights. Jacob and Dianna Hostetter are buried in the Warner Cemetery, Niagara Falls, Ont.