Data Mining Practical Machine Learning Tools and Techniques

/pdf/social-capital-a-theory-of-social-structure-and-action-4m7poq6byy.pdf

Social capital: a theory of social structure and action

All Our Kin: Strategies for Survival in a Black Community. C. B. Stack. New York: Harper & Row. 1974. Carol Stack wrote one of the most powerful books of the last half century about African American families. The book's power derived from its focus on the stories and the lives of persons who were struggling to manage with limited resources and who had evolved seamless methods of survival and coping strategies. Stack was not content to view the problems of impoverished African American families from an outside perspective, as had been done in the past, but chose instead to present her work from the view of the participants. She presented a sensitive view of families that has not been duplicated to this day. Stack put specific emphasis on being accepted by the families before she began interviewing them. She and her son took a long time to be accepted by the families as they gradually became participants in the day-to-day lives of the "Flats." She was sensitive to the patterns of interactions among the networks of family and friends that would have been overlooked by almost any other researcher or method of observation. The book showed how a person from another racial and economic group was able, with skill, to become an intimate part of the experience and the lives of very poor families. Her anthropological approach stands in sharp contrast to the countless attempts of others to quickly go in and pull out slices of families' lives with a preexisting conceptual framework. The African American families of the Flats were presented as they were, not from a White academic theoretical perspective that was not based on reality. Stack made many observations that allowed one to see the intricate workings of the families that "outsiders" had not been documented before. Participants were allowed to make observations about their own families' patterns of interaction and to uncover truths of family functioning based on the reality of their lives. Important data on these second-generation urban dwellers are presented in such a calm manner that one could overlook their significance to the field. The impact of the economic pressures on the men and women in the African American community show how persons can have mainstream values but are prevented from achieving them because of the lack of employment and economic security within the community. In response to the reality, Stack found that African Americans have cooperated to produce an adaptive strategy of exchanging goods and trading resources, as well as offering child care or temporary fosterage. Kinship boundaries were more elastic than they were in more affluent families because these individuals immersed themselves in a domestic network of kinfolk and fictive kin, or those who became as kin. The participants in Stack's study moved around and had loyalties to more than one household grouping at a time, making their family networks unlike the "household" structures of most American families. These networks were diffused over several kin-based households that changed frequently. The usual method of arbitrarily specifying widely accepted definitions of the family as nuclear or matrilocal may block one from seeing the world as it exists in very poor communities. Stack's observations refuted the "culture of poverty" position that had seen African Americans as having no culture or totally negative qualities of family disorganization, personal disorganization, and fatalism. Unfortunately, too many current writings on African Americans still take these same positions. The views may be the result of ignorance, naivete, or complex levels of racism that insidiously make their way into present family literature. Stack continued to reflect on the poverty of the participants' situations. By doing so, she avoided another position that is all too common-assumption that all African American families are the same, regardless of their levels of poverty or affluence. …

All Our Kin: Strategies for Survival in a Black Community

https://link.springer.com/content/pdf/10.2307/3343529.pdf

Making Ends Meet: How Single Mothers Survive Welfare and Low-Wage Work

This article reviews scientific advances in the prevention and treatment of substance-use disorder and related developments in public policy. In the past two decades, research has increasingly supported the view that addiction is a disease of the brain. Although the brain disease model of addiction has yielded effective preventive measures, treatment interventions, and public health policies to address substance-use disorders, the underlying concept of substance abuse as a brain disease continues to be questioned, perhaps because the aberrant, impulsive, and compulsive behaviors that are characteristic of addiction have not been clearly tied to neurobiology. Here we review recent advances in the neurobiology of addiction to clarify the link between addiction and brain function and to broaden the understanding of addiction as a brain disease. We review findings on the desensitization of reward circuits, which dampens the ability to feel pleasure and the motivation to pursue everyday activities; the increasing strength of conditioned responses and stress reactivity, which results in increased cravings for alcohol and other drugs and negative emotions when these cravings are not sated; and the weakening of the brain regions involved in executive functions such as decision making, inhibitory control, and self-regulation that leads to repeated relapse. We also review the ways in which social environments, developmental stages, and genetics are intimately linked to and influence vulnerability and recovery. We conclude that neuroscience continues to support the brain disease model of addiction. Neuroscience research in this area not only offers new opportunities for the prevention and treatment of substance addictions and related behavioral addictions (e.g., to food, sex, and gambling) but may also improve our understanding of the fundamental biologic processes involved in voluntary behavioral control. In the United States, 8 to 10% of people 12 years of age or older, or 20 to 22 million people, are addicted to alcohol or other drugs. 1 The abuse of tobacco, alcohol, and illicit drugs in the United States exacts more than $700 billion annually in costs related to crime, lost work productivity, and health care. 2-4 After centuries of efforts to reduce addiction and its related costs by punishing addictive behaviors failed to produce adequate results, recent basic and clinical research has provided clear evidence that addiction might be better considered and treated as an acquired disease of the brain (see Box 1 for definitions of substance-use disorder and addiction). Research guided by the brain disease model of addiction has led to the development of more effective methods of prevention and treatment and to more informed public health policies. Notable examples include the Mental Health Parity and Addiction Equity Act of 2008, which requires medical insurance plans to provide the same coverage for substance-use disorders and other mental illnesses that is provided for other illnesses, 5 and the proposed bipartisan Senate legislation that From the National Institute on Drug Abuse (N.D.V.) and the National Institute of Alcohol Abuse and Alcoholism (G.F.K.) — both in Bethesda, MD; and the Treatment Research Institute, Philadelphia (A.T.M.). Address reprint requests to Dr. Volkow at the National Institute on Drug Abuse, 6001 Executive Bld., Rm. 5274, Bethesda, MD 20892, or at nvolkow@ nida . nih . gov.

Review Article: Neurobiologic Advances from the Brain Disease Model of Addiction

Background Racial/ethnic disparities in living donor kidney transplantation (LDKT) are large, and rates of LDKT may be limited by indirect costs of living donation. A 2019 Executive Order- Advancing American Kidney Health (AAKH)- sought to remove indirect costs through an expanded reimbursement program. We examine how potential living kidney donors in the U.S. believe regulation stemming from the AAKH initiative will impact their living donor evaluation likelihood, how these beliefs vary by minority race/ethnicity and prior willingness to be evaluated, and how differences are explained by ability to benefit or knowledge and attitudes. Methods Data from a 2019 online survey (Families of Renal Patients Survey) were used. Respondents are U.S. adult (> 18 years) members of the Qualtrics Survey Panel who reported having relatives with weak or failing kidneys (N = 590). Respondents' likelihood to be evaluated for living kidney donation are measured by self-report. Prior willingness is measured by past donation-related actions and current attitudes. Ability to benefit is measured by self-reported labor force participation and financial strain. Transplant knowledge is measured by self-report and a knowledge test, and transplant-related attitudes are measured by self-report. Average marginal effects of minority race/ethnicity and prior willingness for response to each provision in fully-adjusted models were estimated. Formal tests of mediation were conducted using the Karlson, Holm, and Breen (KHB) mediation model. Stata/MP 14.2 was used to conduct all analyses. Results Majorities of all groups report favorable responses to the provisions stipulated in AAKH regulation. Responses to provisions are significantly associated with race/ethnicity and prior willingness, with racial/ethnic minorities and those not previously willing to be evaluated less likely to report favorable responses to these provisions. Prior willingness differences are partially explained by group differences in ability to benefit and transplant-related knowledge and attitudes, but racial/ethnic differences largely are not. Conclusions Regulation stemming from the AAKH initiative is likely to effectively promote LDKT, but may also exacerbate racial/ethnic disparities. Therefore, the regulation may need to be supplemented by efforts to address non-financial obstacles to LDKT in racial/ethnic minority communities in order to ensure equitable increases in LDKT rates and living donor support.

Racial/ethnic and prior willingness disparities in potential living kidney donors' self-assessed responses to advancing American kidney health regulation.

Code for "Projections of white and black older adults without living kin in the United States, 2015 to 2060." Ashton M. Verdery and Rachel Margolis.

Much of what we know about the intellectual landscape of anglophone demography comes from two sources: subjective narratives authored by leaders in the field, whose reviews and observations are derived from their research experience and field-specific knowledge; and professional histories covering the field's foundational controversies, which tend to focus on individuals, institutions, and influence. Here we use bibliographic information from all articles published in the three leading journals of anglophone demography-Demography, Population Studies, and Population and Development Review-to survey the changing contours of anglophone demography's key research areas over the past 70 years. We characterize the field of demography by applying a two-pronged, data-grounded approach from the sociology of science. The first uses natural language processing that lets the substance of the field emerge from the contents of publication records and applies social network analyses to identify groups of papers that talk about the same thing. The second uses bibliometric tools to capture the "conversations" of demography with other disciplines. Our goals are to (1) identify the primary topics of demography since the discipline first gained prominence as an organized field; (2) assess changes in the field's intellectual cohesion and the topical areas that have grown or shrunk; and (3) examine how demographers place their work in relationship to other disciplines, the visibility and influence of demographic research in the broader scientific literature, and the cross-disciplinary translational reach of demographic research. Results provide a dynamic view of the field's scientific development in the second half of the twentieth century and the first two decades of the twenty-first century.

/pdf/demography-s-changing-intellectual-landscape-a-bibliometric-3c9t0bxu.pdf

Demography's Changing Intellectual Landscape: A Bibliometric Analysis of the Leading Anglophone Journals, 1950-2020.

Abstract Millions of COVID-19 widows worldwide face elevated mental health risks that foreshadow worsening physical health and elevated mortality. It remains unknown whether the excess mental health problems for COVID-19 widows are a result of the “bad death” experiences from COVID-19 (e.g., unexpected death and high levels of medical intervention) or pandemic-induced social changes (e.g., social isolation and limited funerals). This study examines whether older adults whose spouses died of COVID-19 disease have worse mental health (self-reported depression, loneliness, and trouble sleeping) than those whose spouses died from causes other than COVID-19 before and during the pandemic. We used Survey of Health, Ageing and Retirement in Europe data collected before (Wave 8, fielded October 2019 to March 2020) and during the pandemic (COVID-19 Supplement-2, fielded June to August 2021) to compare three groups whose spouses died (a) before the pandemic, (b) from COVID-19 during the pandemic, and (c) from non-COVID-19 causes during the pandemic. We find those spouses died from COVID-19 have higher risks of self-reported depression, loneliness, and trouble sleeping than those losing a spouse before the pandemic. However, losing a spouse due to non-COVID-19 causes during the pandemic is not significantly associated with worse mental health compared to pre-pandemic scenarios. During the pandemic, older adults whose spouses died from COVID-19 report higher risks of loneliness than those spouses died from non-COVID-19 causes. This study suggests losing a spouse due to COVID-19 presents unique mental health risks for older adults, clarifying prior theories about mental health impacts of pandemic bereavement.

/pdf/covid-19-widowhood-or-pandemic-widowhood-examining-the-1uazkgqm.pdf

Covid-19 widowhood or pandemic widowhood: examining the differential implications for mental health

INTRODUCTION
Racial/ethnic disparities in living donor kidney transplantation (LDKT) are a persistent challenge. Although nearly all directed donations are from members of patients' social networks, little is known about which social network members take steps toward living kidney donation, which do not, and what mechanisms contribute to racial/ethnic LDKT disparities.


METHODS
We describe the design and rationale of the Friends and Family of Kidney Transplant Patients Study, a factorial experimental fielding two interventions designed to promote LKD discussions. Participants are kidney transplant candidates at two centers who are interviewed and delivered an intervention by trained center research coordinators. The search intervention advises patients on which social network members are most likely to be LKD contraindication-free; the script intervention advises patients on how to initiate effective LKD discussions. Participants are randomized into four conditions: no intervention, search only, script only, or both search and script. Patients also complete a survey and optionally provide social network member contact information so they can be surveyed directly. This study will seek to enroll 200 transplant candidates. The primary outcome is LDKT receipt. Secondary outcomes include live donor screening and medical evaluations and outcomes. Tertiary outcomes include LDKT self-efficacy, concerns, knowledge, and willingness, measured before and after the interventions.


CONCLUSION
This study will assess the effectiveness of two interventions to promote LKD and ameliorate Black-White disparities. It will also collect unprecedented information on transplant candidates' social network members, enabling future work to address network member structural barriers to LKD.

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/ctr.15064

Social network interventions to reduce race disparities in living kidney donation: Design and rationale of the friends and family of kidney transplant patients study (FFKTPS).

Ashton M. Verdery

Papers

Racial/ethnic and prior willingness disparities in potential living kidney donors' self-assessed responses to advancing American kidney health regulation.

Code for "Projections of white and black older adults without living kin in the United States, 2015 to 2060." Ashton M. Verdery and Rachel Margolis.

Demography's Changing Intellectual Landscape: A Bibliometric Analysis of the Leading Anglophone Journals, 1950-2020.

Covid-19 widowhood or pandemic widowhood: examining the differential implications for mental health

Social network interventions to reduce race disparities in living kidney donation: Design and rationale of the friends and family of kidney transplant patients study (FFKTPS).