A cross-cultural perspective on mothers’ attitudes on sharing information with the teachers on which child has been conceived by egg donation

There is now a growing body of research examining psychological aspects of children born as a result of Assisted Reproductive Technologies (ARTs), in particular via egg donation. Some research suggests that concealment of children’s biological origins may affect their psychological development. Hence, there is current debate to decide how widely details about children’s conception should be disclosed to the public in particular to those involved in the education of children. Some parents maintain that the school should be informed so that teachers can offer support to children that reveal details about their origin. Others think this information should be kept private. The present study is focused on the debate as to whether the private information about the children’s conception should be shared with their teachers. This will be studied from the point of view of mothers with naturally conceived children and mothers of children born as a result of egg donation. Furthermore, the topic will be investigated from a cross-cultural perspective. Mothers of children born as a result of egg donation from Iran (N =4) and Britain (N =4), overall mean age = 39.37, and 69 mothers with naturally conceived children from Iran (N = 33) and Britain (N = 36), overall mean age = 36.79, were asked if they would agree that information about how their child was born should be shared with their teachers. The results were an overwhelming disagreement from all women that this information should be shared with teachers. However, Iranian women with naturally born children differed from their British counterparts in being relatively more positive on this subject, possibly an indication that they do not agree with conception via egg donation. The implications of the results are discussed

High strain fatigue of cast steel and cast irons

Imperial Users onl

Conception by egg donation: perceptions, maternal bonding and health practices

Infertility is a condition that affects a significant number of couples around the world and Assisted Reproductive Technology (ART), which offers a range of possible treatments, is the most effective means to treat infertility. One of the key features of ART is conception by egg donation in which the child has no genetic link with the mother. The aim of the present thesis is to examine how the Iranian (Eastern) and British (Western) public, as well as mothers (both Iranian and British) who have conceived a child by egg donation, differ in their perceptions of the consequences of children born by egg donation from psychological, social and medical perspectives (study1). Furthermore, it aims to examine how Iranian pregnant women who have conceived by egg donation differ in their maternal bonding and health practices from those who conceived naturally (study 2). The sample group in study 1 consisted of 121 participants, 63 Iranian (Male = 26, Female = 37, Mean Age = 42.91, SD = 13.58) and 58 British (Male = 19, Female = 39, Mean Age = 32.36, SD = 14.02), in which 8 participants (4 Iranian and 4 British) were mothers with a donor egg child of primary school age. A 12-item questionnaire/statements was presented to the participants based on key reported literature on various scientific research findings on psychological, medical and social issues related to children born through ART. The participants were requested to respond to each statement by choosing one of the Likert scale options ranging from 1 to 4, Strongly agree, Agree, and Disagree to Strongly disagree. There was also an opportunity for the participants to write down additional comments in response to each of the statements about the reasons for their choice on each of the options. The process of data collection took 5 months to complete from January to May 2015. Study 1 results were subjected to quantitative analyses for the Iranian and the British public and for the Iranian and British mothers who have children born as a result of egg donation. Furthermore, all written comments were subjected to content analysis. The results showed that Iranian mothers with a donor egg child agreed more than their British counterparts (8 participants) that conception via egg donation might have psychological, social and medical problems for the resulting children due to a) lack of genetic link b) being unhappier than naturally born and c) might experience overt prejudice from the society. Overall, study 1 found that men more than women and the Iranians more than the British were in agreement with scientific research that children conceived via egg donation have more medical, psychological and social problems than naturally born children due to lack of genetic link, being unhappier and experience more prejudice from their society. Study 2 conducted in a hospital in Tehran aimed to explore maternal bonding between mother and fetus, and health practices in Iranian pregnant women via egg donation and naturally through the Maternal-Fetal Attachment (MFA), Fetal Health Locus of Control (FHLC) and Maternal Health Practices (MHP). The target group consisted of 21 Iranian women pregnant via egg donation (Mean Age = 32.42, SD = 4.48). For comparison, a sample of 50 women pregnant by natural conception (Mean Age = 28.06, SD = 5.45) was also recruited. The process of data collection initiated in January 2018 and concluded in May 2018. The results showed women who conceived via donor egg, compared to women who conceived naturally, scored lower on the 4 subscales of MFA namely: Attributing characteristics to the fetus, Giving of self, Differentiation of self from the fetus and Interaction with the fetus. On the FHLC scale, women who conceived via donor egg, compared to women who conceived naturally, considered both Chance and Professionals/Powerful Others (External factors) as being more responsible for the health of their baby rather than Internal factors (or themselves). Finally, women who conceived via donor egg, compared to women who conceived naturally, scored lower on MHP indicating they paid significantly less attention to their health activities during pregnancy. Overall, the results of the two studies are argued to make an original contribution to public perceptions of donor egg children and maternal bonding, and health practices of pregnant women who conceived by egg donation, in particular, in a culture such as Iran. It is hoped that practitioners and those involved in infertility treatment benefit from the results of the present study in giving the best advice to their patients. The limitations of the thesis, as well as recommendations and future directions, are discussed

Bottomless

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Irrational Toric Varieties

Classical toric varieties are among the simplest objects in algebraic geometry. They arise in an elementary fashion as varieties parametrized by monomials whose exponents are a finite subset A of Zⁿ . They may also be constructed from a rational fan Σ in Rⁿ . The combinatorics of the set A or fan Σ control the geometry of the associated toric variety. These toric varieties have an action of an algebraic torus with a dense orbit. Applications of algebraic geometry in geometric modeling and algebraic statistics have long studied the nonnegative real part of a toric variety as the main object, where the set A may be an arbitrary set in Rⁿ. These are called irrational affine toric varieties. This theory has been limited by the lack of a construction of an irrational toric variety from an arbitrary fan in Rⁿ. We construct a theory of irrational toric varieties associated to arbitrary fans. These are (R>)ⁿ-equivariant cell complexes dual to the fan. Such an irrational toric variety is projective (may be embedded in a simplex) if and only if its fan is the normal fan of a polytope, and in that case, the toric variety is homeomorphic to that polytope. We use irrational toric varieties to show that the space of Hausdorff limits of translates an irrational toric variety associated to a finite subset A of Rⁿ is homeomorphic to the secondary polytope of A

A cross-cultural perspective on mothers’ attitudes on sharing information with the teachers on which child has been conceived by egg donation

There is now a growing body of research examining psychological aspects of children born as a result of Assisted Reproductive Technologies (ARTs), in particular via egg donation. Some research suggests that concealment of children’s biological origins may affect their psychological development. Hence, there is current debate to decide how widely details about children’s conception should be disclosed to the public in particular to those involved in the education of children. Some parents maintain that the school should be informed so that teachers can offer support to children that reveal details about their origin. Others think this information should be kept private. The present study is focused on the debate as to whether the private information about the children’s conception should be shared with their teachers. This will be studied from the point of view of mothers with naturally conceived children and mothers of children born as a result of egg donation. Furthermore, the topic will be investigated from a cross-cultural perspective. Mothers of children born as a result of egg donation from Iran (N =4) and Britain (N =4), overall mean age = 39.37, and 69 mothers with naturally conceived children from Iran (N = 33) and Britain (N = 36), overall mean age = 36.79, were asked if they would agree that information about how their child was born should be shared with their teachers. The results were an overwhelming disagreement from all women that this information should be shared with teachers. However, Iranian women with naturally born children differed from their British counterparts in being relatively more positive on this subject, possibly an indication that they do not agree with conception via egg donation. The implications of the results are discussed

Monomial Gotzmann sets

Ankara : The Department of Mathematics and the Institute of Engineering and Science of Bilkent University, 2011.Thesis (Master's) -- Bilkent University, 2011.Includes bibliographical references leaves 21-22.A homogeneous set of monomials in a quotient of the polynomial ring S := F[x1, . . . , xn] is called Gotzmann if the size of this set grows minimally when multiplied with the variables. We note that Gotzmann sets in the quotient R := F[x1, . . . , xn]/(x a 1 ) arise from certain Gotzmann sets in S. Then we partition the monomials in a Gotzmann set in S with respect to the multiplicity of xi and obtain bounds on the size of a component in the partition depending on neighboring components. We show that if the growth of the size of a component is larger than the size of a neighboring component, then this component is a multiple of a Gotzmann set in F[x1, . . . , xi−1, xi+1, . . . xn]. We also adopt some properties of the minimal growth of the Hilbert function in S to R.Pir, Ata FıratM.S