Advanced Laminated Object Manufacturing (LOM) of SiSiC Ceramics

Carbon sheets were used as a starting material for fabrication of SiSiC composites by advanced LOM. This approach consists of three steps: First a preform was fabricated form phenolic resin coated carbon paper with a LOM-device. Second the preform was turned into a carbon preform by pyrolysis in N2-atmosphere. Third pressureless reactive melt infiltration of silicon into the as fabricated carbon preform, which finally yielded a dense SiSiC composite. SEM analysis revealed a microstructure consisting of uniformly dispersed β-SiC grains in a matrix of silicon. The LOM fabricated material exhibited an average four point bending strength and Youngs modulus of 115 MPa and 165 GPa, respectively.Mechanical Engineerin

Sociological Cocoons: Organizations for the Transformation of Identity

A paper presented by David R. Rudy and Arthur L. Greil at the annual meeting of the Society for the Scientific Study of Religion in the winter of 1980 on the rise of new religions

Conversion to the World View of Alcoholics Anonymous: A Refinement of Conversion Theory

Most empirical studies of the conversion process have focused on individuals who have come to espouse the world view of a deviant religious denomination or sect. Using observational data our research analyzes the conversion process by which individuals come to identify with the ideology propounded by Alcoholics Anonymous (A.A.). A.A. provides prospective alcoholics with both a solution to drinking problems and an overarching world view with which to reinterpret their past experience. The A.A. conversion process can be divided into six phases: hitting bottom, first stepping, making a commitment, accepting your problem, telling your story, and doing Twelfth Step work. Each of these phases is described in detail. Similarities and differences are noted between the observed A.A. conversion process and the model generally described in the sociological literature on religious conversion. Our analysis indicates certain weaknesses in the process-model explanation of conversion and points to the necessity of taking into account organizational context and situational variables

Fertility Response to the COVID-19 Pandemic in Developed Countries – On Pre-pandemic Fertility Forecasts

The COVID-19 pandemic has affected all areas of our lives. Among other outcomes, the academic literature and popular media both discuss the potential effects of the pandemic on fertility. As fertility is an important determinant of population development and population forecasts are important for policy decisions and planning, we need to address to which extent fertility forecasts performed before the pandemic still apply. Using Monte Carlo forecasting based on principal components of fertility rates, we quantify the effects of the pandemic on fertility for 22 countries and discuss whether forecasts made prior to the pandemic need adjustment based on more recent data. Among the studied countries, 14 countries show no significant effect of the pandemic at all, while six countries have significantly lowered numbers of births in comparison to counterfactual trajectories that assume that past trends will hold. These countries are primarily in the Mediterranean and East Asia. For Finland and South Korea, there is statistical evidence for increased fertility in the early phases of the pandemic. In all cases with statistically significant fertility differentials caused by the pandemic, reproductive behavior normalized quickly. Therefore, we find no evidence for long-term effects of the pandemic on fertility, leading to the conclusion that pre-pandemic fertility forecasts still apply

Understanding and Treating the Psychosocial Consequences of Infertility

Psychological distress and infertility are linked in a complex pattern, such that distress may be a cause of infertility and reduce the probability of achieving a pregnancy at the same time that infertility may be a cause of psychological distress. Although infertile women are not more likely to be characterized by psychopathology, they are more likely to experience higher levels of distress than comparison groups. Infertile men also experience psychological distress, but women experience more infertility distress than men. Both infertility and its treatment are stressors putting a heavy psychological strain on couple relationships. Whereas there is general agreement about the need for psychological interventions to treat infertility distress, little is known about the efficacy and effectiveness of psychosocial intervention. Given the prevalence of infertility and the fact that the numbers of individuals and couples seeking infertility treatments are increasing, it is essential that mental health professionals understand the emotional challenges faced by this population.https://digitalcommons.chapman.edu/mft_books/1002/thumbnail.jp

Infertility and Life Satisfaction Among Women

Using data from a random sample of 580 midwestern women, the authors explore the association between lifetime infertility and life satisfaction. Past research shows lower life satisfaction among those seeking help for infertility. The authors find no direct effects of lifetime infertility, regardless of perception of a problem, on life satisfaction; however, there are several conditional effects. Among women who have ever met the criteria for infertility and perceive a fertility problem, life satisfaction is significantly lower for non-mothers and those with higher internal medical locus of control, and the association is weaker for employed women. For women with infertility who do not perceive a problem, motherhood is associated with higher life satisfaction compared to women with no history of infertility

Pregnancy Loss and Distress Among U.S. Women

Although pregnancy loss—especially miscarriage— is a relatively common experience among reproductive-aged women, much of our understanding about the experience has come from small clinic-based or other nonrepresentative samples. We compared fertility-specific distress among a national sample of 1,284 women who have ever experienced a stillbirth or miscarriage. We found that commitment/attachment to pregnancy that ended in loss as well as current childbearing contexts and attitudes were associated with distress following pregnancy loss. Practitioners working with women or couples who have experienced pregnancy loss should be aware of the importance of characteristics associated with higher distress, such as whether the pregnancy had been planned, recency of the loss, no subsequent live births, having a medical explanation for the loss, a history of infertility, current childbearing desires, importance of motherhood, and locus of control over fertility

The experience of infertility: A review of recent literature

About 10 years ago Greil published a review and critique of the literature on the socio-psychological impact of infertility. He found at the time that most scholars treated infertility as a medical condition with psychological consequences rather than as a socially constructed reality. This article examines research published since the last review. More studies now place infertility within larger social contexts and social scientific frameworks although clinical emphases persist. Methodological problems remain but important improvements are also evident. We identify two vigorous research traditions in the social scientific study of infertility. One tradition uses primarily quantitative techniques to study clinic patients in order to improve service delivery and to assess the need for psychological counseling. The other tradition uses primarily qualitative research to capture the experiences of infertile people in a sociocultural context. We conclude that more attention is now being paid to the ways in which the experience of infertility is shaped by social context. We call for continued progress in the development of a distinctly sociological approach to infertility and for the continued integration of the two research traditions identified here