M Morris
Dados Biográficos
| ID | 879 |
|---|---|
| NOME | M Morris |
| PRENOMES | M |
| SOBRENOME | Morris |
| ASSINATURA | MORRIS M |
| AFILIAÇÕES | University of Washington |
| ORCID | 0000-0002-1191-3521 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 68 |
| TOTAL DE CITAÇÕES | 397 |
| TOTAL COMO AUTOR | 68 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1973 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2022 |
| ÍNDICE H | 7 |
Impact of survey design on estimation of exponential-family random graph models from egocentrically-sampled data
A Behavioral Cascade of HIV Seroadaptation Among US Men Who Have Sex with Men in the Era of PrEP and U = U
Cold War Panic and the Korean War Film
The Korean War would generate a wide range of cinematic responses. The fledgling film industry of South Korea produced films that, in sync with an ideology of stark anti-communism, tended to emphasise the immediate physical brutality of the communist enemy. The reaction of American film makers was at first to reproduce the narrative shape and tropes of the very successful films from World War II, usually situated in Europe or the Pacific Islands.…
Multilevel network data facilitate statistical inference for curved ERGMs with geometrically weighted terms
Forward reachable sets
Formal analysis of the emergent structural properties of dynamic networks is largely uncharted territory. We focus here on the properties of forward reachable sets (FRS) as a function of the underlying degree distribution and edge duration. FRS are defined as the set of nodes that can be reached from an initial seed via a path of temporally ordered edges; a natural extension of connected component measures to dynamic networks. Working in a stocha…
Epidemic potential by sexual activity distributions
For sexually transmitted infections like HIV to propagate through a population, there must be a path linking susceptible cases to currently infectious cases. The existence of such paths depends in part on the degree distribution . Here, we use simulation methods to examine how two features of the degree distribution affect network connectivity: Mean degree captures a volume dimension, while the skewness of the upper tail captures a shape dimensio…
Notes Toward an Archaeology of Hallyu
The first consciousness that a new Korean cultural wave -hallyu- was in motion began to take shape in different forms and at different times in the rest of East Asia. It was the craze for Korean TV drama that represented a sudden apparition of something new from South Korea. Before long, however, this wave grew bigger and far more complex than anyone might have predicted, including Korean pop music and films, animation, online games, smartphones,…
A Preliminary Evaluation of a Community-Based Campaign to Increase Awareness of Concurrency and HIV Transmission in African American and African-Born Communities
Reprint of
Rising Sun, Divided Land
Rising Sun, Divided Land: Japanese and South Korean Filmmakers." Asian Studies Review, 38(3), pp. 522–523
This is the medicine
We report the results of the first study designed to evaluate the feasibility and acceptability of an HIV prevention intervention focused on concurrent sexual partnerships. Mathematical models and longitudinal studies of stable couples indicate concurrency plays a critical role in sustaining generalized HIV epidemics in heterosexual populations, and East and Southern African nations identified concurrency reduction as a priority for HIV preventio…
Comparing Estimates of Multiple and Concurrent Partnerships Across Population Based Surveys
Sex, Drugs, and Race
Objectives. We examined how risk behaviors differentially connect a population at high risk for sexually transmitted infections. Methods. Starting from observed networks representing the full risk network and the risk network among respondents only, we constructed a series of edge-deleted counterfactual networks that selectively remove sex ties, drug ties, and ties involving both sex and drugs and a comparison random set. With these edge-deleted …
A qualitative study of barriers to consistent condom use among HIV-1 serodiscordant couples in Kenya
This study explored barriers to consistent condom use among heterosexual HIV-1 serodiscordant couples who were aware of the HIV-1 serodiscordant status and had been informed about condom use as a risk reduction strategy. We conducted 28 in-depth interviews and 9 focus group discussions among purposively selected heterosexual HIV-1 serodiscordant couples from Thika and Nairobi districts in Kenya. We analyzed the transcribed data with a grounded th…
Quantifying the Benefits of Link-Tracing Designs for Partnership Network Studies
Difficult-to-reach populations are frequently sampled through various link tracing-based designs, which rely on interpersonal networks to identify members of the population. This article examines the substantive returns to one such multiple-link tracing design in the Colorado Springs "project 90" human immunodeficiency virus (HIV) risk networks study. Cross-links were respondents who were targeted for enrollment because of being named as partners…
East Asia
Mixed Methods in Health Psychology
This article has two purposes: to examine why mixed methods is a legitimate approach particularly well suited to health psychology; and to describe the challenges inherent in conducting mixed methods research. First, arguments justifying the status of mixed methods as a third paradigm alongside solely quantitative and qualitative frameworks are discussed. Second, a qualitatively driven model of mixed methods is illustrated using examples from a r…
Concurrent Partnerships, Acute Infection and HIV Epidemic Dynamics Among Young Adults in Zimbabwe
Consistency of Self-Reported Sexual Behavior in Surveys
South Korea's Kwangju Uprising
2010 will be a year of commemorations in South Korea. The 25th of June will mark the sixtieth anniversary of the beginning of the Korea War. Midway between 2010 and 1950 was 1980. The Kwangju Uprising of May of that year was an event almost as significant as the US-Korean War in framing the contemporary nation
Concurrent Partnerships and HIV Prevalence Disparities by Race
Concurrent sexual partnerships may help to explain the disproportionately high prevalence of HIV and other sexually transmitted infections among African Americans. The persistence of such disparities would also require strong assortative mixing by race. We examined descriptive evidence from 4 nationally representative US surveys and found consistent support for both elements of this hypothesis. Using a data-driven network simulation model, we fou…
Birds of a feather, or friend of a friend? using exponential random graph models to investigate adolescent social networks
In this article, we use newly developed statistical methods to examine the generative processes that give rise to widespread patterns in friendship networks. The methods incorporate both traditional demographic measures on individuals (age, sex, and race) and network measures for structural processes operating on individual, dyadic, and triadic levels. We apply the methods to adolescent friendship networks in 59 U.S. schools from the National Lon…
A statnet Tutorial
The statnet suite of R packages contains a wide range of functionality for the statistical analysis of social networks, including the implementation of exponential-family random graph (ERG) models. In this paper we illustrate some of the functionality of statnet through a tutorial analysis of a friendship network of 1,461 adolescents.
Ergm
We describe some of the capabilities of the ergm package and the statistical theory underlying it. This package contains tools for accomplishing three important, and interrelated, tasks involving exponential-family random graph models (ERGMs): estimation, simulation, and goodness of fit. More precisely, ergm has the capability of approximating a maximum likelihood estimator for an ERGM given a network data set; simulating new network data sets fr…
Specification of Exponential-Family Random Graph Models
Exponential-family random graph models (ERGMs) represent the processes that govern the formation of links in networks through the terms selected by the user. The terms specify network statistics that are sufficient to represent the probability distribution over the space of networks of that size. Many classes of statistics can be used. In this article we describe the classes of statistics that are currently available in the ergm package. We also …
Birds of a feather, or friend of a friend? using exponential random graph models to investigate adolescent social networks
In this article, we use newly developed statistical methods to examine the generative processes that give rise to widespread patterns in friendship networks. The methods incorporate both traditional demographic measures on individuals (age, sex, and race) and network measures for structural processes operating on individual, dyadic, and triadic levels. We apply the methods to adolescent friendship networks in 59 U.S. schools from the National Lon…
Women's Gains or Men's Losses? A Closer Look at the Shrinking Gender Gap in Earnings
The recent closing of the gender wage gap is often attributed to increases in women's human capital. This explanation neglects the effect of growing inequality in men's earnings. The authors develop a decomposition that allows them to test how distributional changes in men's and women's earnings combine to yield changes in women's economic status. Using Current Population Survey data from 1967 to 1987, the authors find that the striking polarizat…
Economic Inequality
Two positions dominate the debate over the recent increases in economic inequality in the United States. The job-skill mismatch thesis attributes rising inequality to growth in the number of high-skill, high-wage jobs that leaves less-skilled workers behind. The thesis, in contrast, argues that the service shift generates growth in the number of both high-wage and low-wage jobs, and declines in the middle. Standard summary measures of distributio…
Concurrent Partnerships and HIV Prevalence Disparities by Race
Concurrent sexual partnerships may help to explain the disproportionately high prevalence of HIV and other sexually transmitted infections among African Americans. The persistence of such disparities would also require strong assortative mixing by race. We examined descriptive evidence from 4 nationally representative US surveys and found consistent support for both elements of this hypothesis. Using a data-driven network simulation model, we fou…
Place of death
Epidemiology and Social Networks
The spread of a disease through human populations can be significantly altered by patterned networks of social contact. Largely in response to AIDS, the way in which social networks channel disease has recently become the focus of a sustained modeling effort in epidemiology. The challenge has been to develop a general framework capable of representing both simple and arbitrarily complicated mixing structures, and of solving the matching problem i…
Relative Distribution Methods
We present an outline of relative distribution methods, with an application to recent changes in the U.S. wage distribution. Relative distribution methods are a nonparametric statistical framework for analyzing data in a fully distributional context. The framework combines the graphical tools of exploratory data analysis with statistical summaries, decomposition, and inference. The relative distribution is similar to a density ratio. It is techni…
Mixed Methods in Health Psychology
This article has two purposes: to examine why mixed methods is a legitimate approach particularly well suited to health psychology; and to describe the challenges inherent in conducting mixed methods research. First, arguments justifying the status of mixed methods as a third paradigm alongside solely quantitative and qualitative frameworks are discussed. Second, a qualitatively driven model of mixed methods is illustrated using examples from a r…
Exponential Family Models for Sampled and Census Network Data
Much progress has been made on the development of statistical methods for network analysis in the past ten years, building on the general class of exponential family random graph (ERG) network models first introduced by Holland and Leinhardt (1981). Recent examples include models for Markov graphs, “p*” models, and actor-oriented models. For empirical application, these ERG models take a logistic form, and require the equivalent of a network cens…
This is the medicine
We report the results of the first study designed to evaluate the feasibility and acceptability of an HIV prevention intervention focused on concurrent sexual partnerships. Mathematical models and longitudinal studies of stable couples indicate concurrency plays a critical role in sustaining generalized HIV epidemics in heterosexual populations, and East and Southern African nations identified concurrency reduction as a priority for HIV preventio…
Sex, Drugs, and Race
Objectives. We examined how risk behaviors differentially connect a population at high risk for sexually transmitted infections. Methods. Starting from observed networks representing the full risk network and the risk network among respondents only, we constructed a series of edge-deleted counterfactual networks that selectively remove sex ties, drug ties, and ties involving both sex and drugs and a comparison random set. With these edge-deleted …
Consistency of Self-Reported Sexual Behavior in Surveys
Prevalence of HIV Infection Among Young Adults in the United States
Objectives. We estimated HIV prevalence rates among young adults in the United States. Methods. We used survey data from the third wave of the National Longitudinal Study of Adolescent Health, a random sample of nearly 19000 young adults initiated in 1994–1995. Consenting respondents were screened for the presence of antibodies to HIV-1 in oral mucosal transudate specimens. We calculated prevalence rates, accounting for survey design, response ra…
Epidemic potential by sexual activity distributions
For sexually transmitted infections like HIV to propagate through a population, there must be a path linking susceptible cases to currently infectious cases. The existence of such paths depends in part on the degree distribution . Here, we use simulation methods to examine how two features of the degree distribution affect network connectivity: Mean degree captures a volume dimension, while the skewness of the upper tail captures a shape dimensio…
Impact of survey design on estimation of exponential-family random graph models from egocentrically-sampled data
Quantifying the Benefits of Link-Tracing Designs for Partnership Network Studies
Difficult-to-reach populations are frequently sampled through various link tracing-based designs, which rely on interpersonal networks to identify members of the population. This article examines the substantive returns to one such multiple-link tracing design in the Colorado Springs "project 90" human immunodeficiency virus (HIV) risk networks study. Cross-links were respondents who were targeted for enrollment because of being named as partners…
Forward reachable sets
Formal analysis of the emergent structural properties of dynamic networks is largely uncharted territory. We focus here on the properties of forward reachable sets (FRS) as a function of the underlying degree distribution and edge duration. FRS are defined as the set of nodes that can be reached from an initial seed via a path of temporally ordered edges; a natural extension of connected component measures to dynamic networks. Working in a stocha…
Put on a Happy Face
Practice makes perfect
Practice makes perfect: developing public health practice Why do we need a public health practice?What do we mean by practice?That the relationship between public health practice in an academic setting and public health practice within a health service setting should be close and collaborative is not a recent revelation. 1 However, still, academic departments can seem remote and out of touch with the day to day realities of work in a health autho…
The downside report
Percentages, Odds, and the Meaning of Inequality
Anencephalus
Buson and Shiki
Hitomaro and the Birth of Japanese Lyricism
The Riverside Counselor's Stories
Waka and Form, Waka and History
The Fracture of Meaning
Epidemiology and Social Networks
The spread of a disease through human populations can be significantly altered by patterned networks of social contact. Largely in response to AIDS, the way in which social networks channel disease has recently become the focus of a sustained modeling effort in epidemiology. The challenge has been to develop a general framework capable of representing both simple and arbitrarily complicated mixing structures, and of solving the matching problem i…
Epidemiology and Social Networks
Economic Inequality
Two positions dominate the debate over the recent increases in economic inequality in the United States. The job-skill mismatch thesis attributes rising inequality to growth in the number of high-skill, high-wage jobs that leaves less-skilled workers behind. The thesis, in contrast, argues that the service shift generates growth in the number of both high-wage and low-wage jobs, and declines in the middle. Standard summary measures of distributio…
Concurrent partnerships and transmission dynamics in networks
Network structure plays a critical role in channeling person-to-person transmission of infectious disease agents like HIV. Stochastic simulations are used here to examine the effect of two structural attributes: concurrent partnerships (degree) and mixing patterns (degree-based homophily bias). Four alternative partnership scenarios are compared: (1) sequential monogamy, and concurrent partnerships with (2) random (3) assortative and (4) disassor…
Women's Gains or Men's Losses? A Closer Look at the Shrinking Gender Gap in Earnings
The recent closing of the gender wage gap is often attributed to increases in women's human capital. This explanation neglects the effect of growing inequality in men's earnings. The authors develop a decomposition that allows them to test how distributional changes in men's and women's earnings combine to yield changes in women's economic status. Using Current Population Survey data from 1967 to 1987, the authors find that the striking polarizat…
Bridge populations in the spread of HIV/Aids in Thailand
OBJECTIVE: To determine the extent to which men provide a bridge population between commercial sex workers (CSW) and the general female population in Thailand. DESIGN: Sexual network and serological data were collected from a systematic quota sample of low income men and truckers during 1992 in three Thailand provinces. Completed sample size was 1075 men aged 17-45 years and 330 truckers. METHODS: Sexual network information was used to identify t…
America Unequal
Concurrent partnerships and the spread of HIV
OBJECTIVE: To examine how concurrent partnerships amplify the rate of HIV spread, using methods that can be supported by feasible data collection. METHODS: A fully stochastic simulation is used to represent a population of individuals, the sexual partnerships that they form and dissolve over time, and the spread of an infectious disease. Sequential monogamy is compared with various levels of concurrency, holding all other features of the infectio…
Is an Experimental History Possible? The UTS Review. Cultural Studies and New Writing, vol. 2
Percentages, Odds, and the Meaning of Inequality
The downside report
The design
Ethical Challenges
The opportunity
Relative Distribution Methods
We present an outline of relative distribution methods, with an application to recent changes in the U.S. wage distribution. Relative distribution methods are a nonparametric statistical framework for analyzing data in a fully distributional context. The framework combines the graphical tools of exploratory data analysis with statistical summaries, decomposition, and inference. The relative distribution is similar to a density ratio. It is techni…
The case of the desperate staff
The pilotʼs demise
Practice makes perfect
Practice makes perfect: developing public health practice Why do we need a public health practice?What do we mean by practice?That the relationship between public health practice in an academic setting and public health practice within a health service setting should be close and collaborative is not a recent revelation. 1 However, still, academic departments can seem remote and out of touch with the day to day realities of work in a health autho…
Closing comments
Psychology (32 obras) · Sociology (26 obras) · Computer Science (24 obras) · Medicine (21 obras) · Mathematics (15 obras) · Complex Network Analysis Techniques (13 obras) · Population (13 obras) · Adolescent Sexual and Reproductive Health (12 obras) · Demography (12 obras) · HIV/AIDS Research and Interventions (12 obras)