Revision history for WebsiteResearchContent


Revision [508]

Last edited on 2019-12-25 12:51:18 by ChrisMarcum [added white space]

No Differences

Revision [507]

Edited on 2019-12-25 12:50:10 by ChrisMarcum [updated content]
Additions:
""<img src="https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png" title="topical network of CV" alt="topical network of CV" width="50%">""
I am a mathematical sociologist working in the area of health, aging, and social networks. As a generalist, I have published work in a variety of areas including organizational sociology, behavioral medicine, ethology, gerontology, and public policy. I also have expertise in large dataset management and analysis. The figure on the left is a graphical representation of my CV as a topical network. The nodes represent general keywords from my publications (scaled by their relative frequency) and the edges represent co-occurrence. The code used to generate this image is available here on my [[https://github.com/cmarcum/marcumcites github]].
Deletions:
""<img src="https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png" title="topical network of CV" alt="topical network of CV" width="70%">""
I am a mathematical sociologist working in the area of health, aging, and social networks. As a generalist, I have published work in a variety of areas including organizational sociology, behavioral medicine, ethology, gerontology, and public policy. I also have expertise in large dataset management and analysis. The above figure is a graphical representation of my CV as a topical network. The nodes represent general keywords from my publications (scaled by their relative frequency) and the edges represent co-occurrence. The code used to generate this image is available here on my [[https://github.com/cmarcum/marcumcites github]].


Revision [506]

Edited on 2019-12-25 12:48:41 by ChrisMarcum [updated content]
Additions:
""<img src="https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png" title="topical network of CV" alt="topical network of CV" width="70%">""
Deletions:
""<img src="https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png" title="topical network of CV" alt="topical network of CV">""


Revision [505]

Edited on 2019-12-25 12:48:00 by ChrisMarcum [updated content]
Additions:
""<img src="https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png" title="topical network of CV" alt="topical network of CV">""
Deletions:
{{image url=""https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}


Revision [504]

Edited on 2019-12-25 12:46:13 by ChrisMarcum [updated content]

No Differences

Revision [503]

Edited on 2019-12-25 12:45:49 by ChrisMarcum [updated content]
Additions:
{{image url=""https://raw.githubusercontent.com/cmarcum/marcumcites/master/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}
Deletions:
{{image url=""uploads/FileDepository/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}


Revision [499]

Edited on 2019-12-25 12:38:18 by ChrisMarcum [updated content]
Additions:
{{image url=""uploads/FileDepository/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}
Deletions:
@@{{image url=""uploads/FileDepository/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}@@


Revision [498]

Edited on 2019-12-25 12:37:15 by ChrisMarcum [updated page to include CV]
Additions:
@@{{image url=""uploads/FileDepository/marcumtopics.png"" title="topical network of CV" alt="topical network of CV"}}@@
I am a mathematical sociologist working in the area of health, aging, and social networks. As a generalist, I have published work in a variety of areas including organizational sociology, behavioral medicine, ethology, gerontology, and public policy. I also have expertise in large dataset management and analysis. The above figure is a graphical representation of my CV as a topical network. The nodes represent general keywords from my publications (scaled by their relative frequency) and the edges represent co-occurrence. The code used to generate this image is available here on my [[https://github.com/cmarcum/marcumcites github]].
Deletions:
I am a mathematical sociologist working in the area of health, aging, and social networks. As a generalist, I have published work in a variety of areas including organizational sociology, behavioral medicine, gerontology, and public policy. I also have expertise in large dataset management and analysis.
@@{{image url="documents/marcumtopics.png" title="topical network of CV" alt="topical network of CV"}}@@


Revision [492]

Edited on 2019-12-25 08:04:46 by ChrisMarcum [tried importing graphic]
Additions:
@@{{image url="documents/marcumtopics.png" title="topical network of CV" alt="topical network of CV"}}@@


Revision [490]

Edited on 2019-12-24 08:58:07 by ChrisMarcum [updated cv link again]
Additions:
A current version of my [[https://www.dropbox.com/s/703385tdl3kpw36/MarcumCV.pdf?dl=0 cv can be found here]].
Deletions:
A current version of my [[https://www.dropbox.com/s/k7uawqozwkdpveg/MarcumCV.pdf?dl=0 cv can be found here]].


Revision [489]

Edited on 2019-12-24 08:57:19 by ChrisMarcum [updated cv link again]
Additions:
All of my publications can be found on [[https://www.dropbox.com/sh/isay5mxx1n9a8wb/AAA8ls7ikDkb7QSHQQwgMXUva?dl=0 my dropbox]]. For a list, see [[https://www.dropbox.com/s/703385tdl3kpw36/MarcumCV.pdf?dl=0 my cv]].
Deletions:
All of my publications can be found on [[https://www.dropbox.com/sh/isay5mxx1n9a8wb/AAA8ls7ikDkb7QSHQQwgMXUva?dl=0 my dropbox]]. For a list, see [https://www.dropbox.com/s/703385tdl3kpw36/MarcumCV.pdf?dl=0 my cv]].


Revision [488]

Edited on 2019-12-24 08:56:46 by ChrisMarcum [updated the CV link]
Additions:
All of my publications can be found on [[https://www.dropbox.com/sh/isay5mxx1n9a8wb/AAA8ls7ikDkb7QSHQQwgMXUva?dl=0 my dropbox]]. For a list, see [https://www.dropbox.com/s/703385tdl3kpw36/MarcumCV.pdf?dl=0 my cv]].
Deletions:
All of my publications can be found on [[https://www.dropbox.com/sh/isay5mxx1n9a8wb/AAA8ls7ikDkb7QSHQQwgMXUva?dl=0 my dropbox]]. For a list, see [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 my cv]].


Revision [459]

Edited on 2018-05-03 12:32:25 by ChrisMarcum [updated list]
Additions:
===Old Posters===
Here are few of the scientific posters I have presented at conferences in graduate school.
Deletions:
===Posters===
Here are few of the scientific posters I have presented at conferences over the past two years.


Revision [453]

Edited on 2018-01-29 14:22:17 by ChrisMarcum [updated research page]
Additions:
=====The Research Page of Christopher Steven Marcum=====
I am a mathematical sociologist working in the area of health, aging, and social networks. As a generalist, I have published work in a variety of areas including organizational sociology, behavioral medicine, gerontology, and public policy. I also have expertise in large dataset management and analysis.
- LinkedIn: [[https://www.linkedin.com/in/christopher-marcum-15b88249/]]
I am a faculty member of the [[http://www.genome.gov/11508935 Social and Behavioral Research Branch (SBRB)]] at NHGRI. I work very closely with Laura Koehly as a staff scientist and methodologist in the Social Network Methods Section. My research agenda is broadly situated within the context of social networks and health. My current projects support and advance our section’s mission and include papers that: 1) demonstrate the utility, validity, and reliability, of a novel approach for multiple-item measurement of social network data; 2) use network inference methods to identify key actors in caregiving networks to people with Alzheimer’s disease and related dementia (among other genetic diseases) based on multiple-informant accounts; 3) develop methods to learn about relationships among Mexican-origin youth living in the same community from a combination of genetic admixture, social, and geographic data; 4) model the inter-generational communication patterns within Mexican-origin families as they discuss health concerns; and, 5) model dynamic social health behaviors unfolding in time on a network of actors. The substance of this agenda taps my training in gerontology by addressing health-related issues across different phases in the life course (i.e., from youth, to middle adulthood, and finally to old-age).
I also act as a mentor to SBRB trainees and teach a seminar on networks and statistics in the branch. Specifically, I supervise the dissertation of [[http://oxcam.gpp.nih.gov/index.asp OxCam fellow]] Mr. Jeffrey Lienert (with L. Koehly and F. Reed-Tsochas) and supervise the post-doctoral training of Dr. Jielu Lin (Ph.D., Case Western 2014).
Another project involved developing models of daily social behavior across the life course. For this work, I am used the sequence data from the American Time Use Survey to understand how age differences in the process of day-to-day living arise. This project attempts to shed new light on the micro-macro link between very local activity sequence transitions and age-associated declines in daily social contact.
Deletions:
======The Research Page of Christopher Steven Marcum======
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis.
I am a faculty member of the [[http://www.genome.gov/11508935 Social and Behavioral Research Branch]] at NHGRI. I work very closely with Laura Koehly as a staff scientist of the Social Network Methods Section. My research agenda is broadly situated within the context of social networks and health. My current projects support and advance our section’s mission and include papers that: 1) demonstrate the utility, validity, and reliability, of a novel approach for multiple-item measurement of social network data; 2) use network inference methods to identify key actors in caregiving networks to people with Alzheimer’s disease and related dementia (among other genetic diseases) based on multiple-informant accounts; 3) develop methods to learn about relationships among Mexican-origin youth living in the same community from a combination of genetic admixture, social, and geographic data; 4) model the inter-generational communication patterns within Mexican-origin families as they discuss health concerns; and, 5) model dynamic social health behaviors unfolding in time on a network of actors. The substance of this agenda taps my training in gerontology by addressing health-related issues across different phases in the life course (i.e., from youth, to middle adulthood, and finally to old-age).
I also act as a trainee mentor and teach a seminar on networks and statistics in the branch. Specifically, I supervise the dissertation of [[http://oxcam.gpp.nih.gov/index.asp OxCam fellow]] Jeffrey Lienart (with L. Koehly and F. Reed-Tsochas) and will supervise the post-doctoral training of Dr. Jielu Lin (Ph.D., Case Western 2014).
Another project involved developing models of daily social behavior across the life course. For this work, I am using the sequence data from the American Time Use Survey to understand how age differences in the process of day-to-day living arise. This project attempts to shed new light on the micro-macro link between very local activity sequence transitions and age-associated declines in daily social contact.


Revision [448]

Edited on 2017-08-16 09:04:18 by ChrisMarcum [fixed typo in url]
Additions:
A current version of my [[https://www.dropbox.com/s/k7uawqozwkdpveg/MarcumCV.pdf?dl=0 cv can be found here]].
Deletions:
A current version of my [https://www.dropbox.com/s/k7uawqozwkdpveg/MarcumCV.pdf?dl=0 cv can be found here]].


Revision [446]

Edited on 2017-08-16 09:03:35 by ChrisMarcum [fixed typo in url]
Additions:
A current version of my [https://www.dropbox.com/s/k7uawqozwkdpveg/MarcumCV.pdf?dl=0 cv can be found here]].
Deletions:
A current version of my [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 cv can be found here]].


Revision [445]

Edited on 2017-07-25 08:27:48 by ChrisMarcum [fixed typo]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis.
A current version of my [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 cv can be found here]].
- Open Science Framework: [[https://osf.io/h624j]]
Deletions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A
current version of my [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 cv can be found here]].
- OpenScience Framework: [[https://osf.io/h624j]]


Revision [431]

Edited on 2017-06-05 09:25:31 by ChrisMarcum [fixed typo]
Additions:
====Publications====
All of my publications can be found on [[https://www.dropbox.com/sh/isay5mxx1n9a8wb/AAA8ls7ikDkb7QSHQQwgMXUva?dl=0 my dropbox]]. For a list, see [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 my cv]].
Deletions:
==Professional Information==


Revision [430]

Edited on 2017-06-05 09:20:26 by ChrisMarcum [fixed typo]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A
current version of my [[https://www.dropbox.com/s/eancjc3fdb7nh2s/MarcumCV.pdf?dl=0 cv can be found here]].
Given the latency between updates on this website, please see these up-to-date external sites for my recent publications:
- ORCID: [[http://orcid.org/0000-0002-0899-6143 0000-0002-0899-6143]]
- Research Gate: [[http://www.researchgate.net/profile/Christopher_Marcum2 Christopher_Marcum2]]
- Google Scholar: [[https://scholar.google.com/citations?user=J0RbUWoAAAAJ Christopher Steven Marcum]]
- OpenScience Framework: [[https://osf.io/h624j]]
I also act as a trainee mentor and teach a seminar on networks and statistics in the branch. Specifically, I supervise the dissertation of [[http://oxcam.gpp.nih.gov/index.asp OxCam fellow]] Jeffrey Lienart (with L. Koehly and F. Reed-Tsochas) and will supervise the post-doctoral training of Dr. Jielu Lin (Ph.D., Case Western 2014).
Deletions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]].
Given the latency between updates on this website, please see these very up-to-date external sites for my recent publications:
- My ORCID: [[http://orcid.org/0000-0002-0899-6143 0000-0002-0899-6143]]
- My Research Gate: [[http://www.researchgate.net/profile/Christopher_Marcum2 Christopher_Marcum2]]
I also act as a trainee mentor and teach a seminar on networks and statistics in the branch. Specifically, I supervise the dissertation of [[http://oxcam.gpp.nih.gov/index.asp OxCam fellow]] Jeffrey Lienart (with L. Koehly and F. Reed-Tsochas) and will supervise the post-doctoral training of Dr. Jielu Lin (Ph.D., Case Western 2014) when she matriculates to the [[https://www.training.nih.gov/programs/postdoc_irp NIH-IRTA]] fellows program in the fall of 2014.
====Collaborators====
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. My collaborations with faculty at other institutions include: [[http://www.ryanacton.com/ Ryan Acton]] (""UMass""), [[http://cphp.sph.unc.edu/staff/bevc_christine.htm Christine Bevc]] (""UNC""), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UC-Davis), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (UC-Berkeley).
====Curriculum Vitae====
[[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]]


Revision [416]

Edited on 2016-02-16 12:48:21 by ChrisMarcum [removed html version of cv]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]].
Deletions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]].


Revision [414]

Edited on 2016-02-16 11:29:01 by ChrisMarcum [Added resources]
Additions:
====Research for Fun====
Sometimes, I do research for fun. Here are a few examples:
- ResearchGraphsForGrafton A page for research dedicated to or about my son, Grafton Elliott Marcum
- [[http://arxiv.org/abs/1512.02914 Yet Another Statistical Analysis of Bob Ross Paintings]] I used spectral and linear subspace analysis to analyze a sample of clippings from Bob Ross Paintings.


Revision [411]

Edited on 2015-09-17 19:33:49 by ChrisMarcum [Added resources]
Additions:
- My Research Gate: [[http://www.researchgate.net/profile/Christopher_Marcum2 Christopher_Marcum2]]
Deletions:
- My ResearchGate: [[www.researchgate.net/profile/Christopher_Marcum2 Christopher_Marcum2]]


Revision [410]

Edited on 2015-09-17 19:33:22 by ChrisMarcum [added research gate]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]].
==Professional Information==
Given the latency between updates on this website, please see these very up-to-date external sites for my recent publications:
- My ORCID: [[http://orcid.org/0000-0002-0899-6143 0000-0002-0899-6143]]
- My ResearchGate: [[www.researchgate.net/profile/Christopher_Marcum2 Christopher_Marcum2]]
Deletions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A current version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]]


Revision [400]

Edited on 2014-08-22 10:51:18 by ChrisMarcum [Added a brief NIH update]
Additions:
====Research at NIH====
I am a faculty member of the [[http://www.genome.gov/11508935 Social and Behavioral Research Branch]] at NHGRI. I work very closely with Laura Koehly as a staff scientist of the Social Network Methods Section. My research agenda is broadly situated within the context of social networks and health. My current projects support and advance our section’s mission and include papers that: 1) demonstrate the utility, validity, and reliability, of a novel approach for multiple-item measurement of social network data; 2) use network inference methods to identify key actors in caregiving networks to people with Alzheimer’s disease and related dementia (among other genetic diseases) based on multiple-informant accounts; 3) develop methods to learn about relationships among Mexican-origin youth living in the same community from a combination of genetic admixture, social, and geographic data; 4) model the inter-generational communication patterns within Mexican-origin families as they discuss health concerns; and, 5) model dynamic social health behaviors unfolding in time on a network of actors. The substance of this agenda taps my training in gerontology by addressing health-related issues across different phases in the life course (i.e., from youth, to middle adulthood, and finally to old-age).
I also act as a trainee mentor and teach a seminar on networks and statistics in the branch. Specifically, I supervise the dissertation of [[http://oxcam.gpp.nih.gov/index.asp OxCam fellow]] Jeffrey Lienart (with L. Koehly and F. Reed-Tsochas) and will supervise the post-doctoral training of Dr. Jielu Lin (Ph.D., Case Western 2014) when she matriculates to the [[https://www.training.nih.gov/programs/postdoc_irp NIH-IRTA]] fellows program in the fall of 2014.
I collaborated with RAND faculty during my post-doctoral work. One project with physicist Raffaelle Vardavas employees an inductive reasoning model of influenza vaccination decisions as affected by influenza diffusion on large-scale social contact networks. My role is two-fold: parameterizing the IR model using sociological theory and empirical data and constructing realistic models of large-scale contact networks. The goal of the project is to advance vaccination policy (i.e., how to minimize effective coverage in the population) above-and-beyond recommendations arising from agent-based research.
Another project involved developing models of daily social behavior across the life course. For this work, I am using the sequence data from the American Time Use Survey to understand how age differences in the process of day-to-day living arise. This project attempts to shed new light on the micro-macro link between very local activity sequence transitions and age-associated declines in daily social contact.
Deletions:
I am currently involved in several collaborations with RAND faculty. One project with physicist Raffaelle Vardavas employees an inductive reasoning model of influenza vaccination decisions as affected by influenza diffusion on large-scale social contact networks. My role is two-fold: parameterizing the IR model using sociological theory and empirical data and constructing realistic models of large-scale contact networks. The goal of the project is to advance vaccination policy (i.e., how to minimize effective coverage in the population) above-and-beyond recommendations arising from agent-based research.
Another project involves developing models of daily social behavior across the life course. For this work, I am using the sequence data from the American Time Use Survey to understand how age differences in the process of day-to-day living arise. This project attempts to shed new light on the micro-macro link between very local activity sequence transitions and age-associated declines in daily social contact.


Revision [399]

Edited on 2014-02-13 07:57:30 by ChrisMarcum [fixed typo]
Additions:
Since the American Time Use Survey disregards simultaneous behavior (i.e., multi-tasking), we can construct sequences of behavior as transitions from stopping one type of activity and starting another. This figure boils down the most common transitions into a relational (path) diagram. The red nodes represent classes of activities and the directed edges represent transitions from one activity to another. Here, an edge from one node to another represents the cessation of the exit activity and commencement of the entrance activity. For example, the arrow from Leisure to Sleeping should be read as "Stopped Leisure and Started Sleeping." Nodes are scaled by the relative frequency of the activity spell (but not their average duration). Determination of which transitions to plot was made by using hierarchical sequence analysis program [[http://sequitur.info/ Sequitur]] on the entire ATUS dataset. Sequences that occurred more than 5000 times are plotted. The five isolates are valid activities but did not appear in enough sub-sequences. Plotting was accomplished using the plot.network() in Butts's network package for R.
Deletions:
Since the American Time Use Survey disregards simultaneous behavior (i.e., multi-tasking), we can construct sequences of behavior as transitions from stopping one type of activity and starting another. This figure boils down the most common transitions into a relational (path) diagram. The red nodes represent classes of activities and the directed edges represent transitions from on activity to another. Here, an edge from one node to another represents the cessation of the exit activity and commencement of the entrance activity. For example, the arrow from Leisure to Sleeping should be read as "Stopped Leisure and Started Sleeping." Nodes are scaled by the relative frequency of the activity spell (but not their average duration). Determination of which transitions to plot was made by using hierarchical sequence analysis program [[http://sequitur.info/ Sequitur]] on the entire ATUS dataset. Sequences that occurred more than 5000 times are plotted. The five isolates are valid activities but did not appear in enough sub-sequences. Plotting was accomplished using the plot.network() in Butts's network package for R.


Revision [353]

Edited on 2012-07-16 15:33:18 by ChrisMarcum [update research]
Additions:
Another project involves developing models of daily social behavior across the life course. For this work, I am using the sequence data from the American Time Use Survey to understand how age differences in the process of day-to-day living arise. This project attempts to shed new light on the micro-macro link between very local activity sequence transitions and age-associated declines in daily social contact.
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. My collaborations with faculty at other institutions include: [[http://www.ryanacton.com/ Ryan Acton]] (""UMass""), [[http://cphp.sph.unc.edu/staff/bevc_christine.htm Christine Bevc]] (""UNC""), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UC-Davis), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (UC-Berkeley).
Deletions:
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. My collaborations with faculty at other institutions include: [[http://www.ryanacton.com/ Ryan Acton]] (""UMass""), [[http://cphp.sph.unc.edu/staff/bevc_christine.htm Christine Bevc]] (""UNC""). I have also collaborated with other graduate students, including [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).


Revision [341]

Edited on 2012-04-17 01:36:03 by ChrisMarcum [added another link]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis. A current version of my cv can be found here: [[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]]
Deletions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis.


Revision [332]

Edited on 2012-03-29 19:00:00 by ChrisMarcum [updated RAND]
Additions:
I am a mathematical sociologist working in the area of aging and social networks. While my specialization is in social gerontology, I have published work in a variety of other areas including organizational sociology and public policy. I also have expertise in large dataset management and analysis.
====Research at RAND====
I am currently involved in several collaborations with RAND faculty. One project with physicist Raffaelle Vardavas employees an inductive reasoning model of influenza vaccination decisions as affected by influenza diffusion on large-scale social contact networks. My role is two-fold: parameterizing the IR model using sociological theory and empirical data and constructing realistic models of large-scale contact networks. The goal of the project is to advance vaccination policy (i.e., how to minimize effective coverage in the population) above-and-beyond recommendations arising from agent-based research.
Deletions:
I am mathematical sociologist working in the area of aging and social networks.


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Edited on 2012-03-29 18:48:57 by ChrisMarcum [added a general note]
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I am mathematical sociologist working in the area of aging and social networks.


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Edited on 2011-06-14 12:07:15 by ChrisMarcum [corrected typo in title]
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""<a href="documents/atusNet.pdf"><img src="documents/atusNet.png"></a>""**Most Common Daily Activity Transitions Sequences**
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""<a href="documents/atusNet.pdf"><img src="documents/atusNet.png"></a>""**Most Common Activity Transitions Sequences**


Revision [296]

Edited on 2011-06-14 12:06:14 by ChrisMarcum [added a new figure on sequence patterns!]
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""<a href="documents/atusNet.pdf"><img src="documents/atusNet.png"></a>""**Most Common Activity Transitions Sequences**
Since the American Time Use Survey disregards simultaneous behavior (i.e., multi-tasking), we can construct sequences of behavior as transitions from stopping one type of activity and starting another. This figure boils down the most common transitions into a relational (path) diagram. The red nodes represent classes of activities and the directed edges represent transitions from on activity to another. Here, an edge from one node to another represents the cessation of the exit activity and commencement of the entrance activity. For example, the arrow from Leisure to Sleeping should be read as "Stopped Leisure and Started Sleeping." Nodes are scaled by the relative frequency of the activity spell (but not their average duration). Determination of which transitions to plot was made by using hierarchical sequence analysis program [[http://sequitur.info/ Sequitur]] on the entire ATUS dataset. Sequences that occurred more than 5000 times are plotted. The five isolates are valid activities but did not appear in enough sub-sequences. Plotting was accomplished using the plot.network() in Butts's network package for R.


Revision [286]

Edited on 2010-11-29 16:30:29 by ChrisMarcum [updated collaborator institutions]
Additions:
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. My collaborations with faculty at other institutions include: [[http://www.ryanacton.com/ Ryan Acton]] (""UMass""), [[http://cphp.sph.unc.edu/staff/bevc_christine.htm Christine Bevc]] (""UNC""). I have also collaborated with other graduate students, including [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).
Deletions:
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. I have also collaborated with other graduate students, including (in alphabetical order) [[http://www.ryanacton.com/ Ryan Acton]] (UCI), [[http://sobek.colorado.edu/SOC/Graduate/vitae/Bevc_CVSept2009.pdf Christine Bevc]] (Univ. Colorado), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).


Revision [285]

Edited on 2010-11-29 16:23:35 by ChrisMarcum [added another image and summary]
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""<a href="documents/daysXmontsXalters.pdf"><img src="documents/daysXmontsXalters.png"></a>""**Seasonality Effects on Social Time by Day of the Month and Month**
Averaging across all years, this time series plots the copresence volume in the American Time Use dataset by days nested in months for all types of relations analyzed in my dissertation. The dependent variable is the sum (volume) of person hours spent copresent with others in the dataset. Weekly seasonality effects with no obvious trend are apparent in each month, with weekly peaks corresponding to weekend days and lulls corresponding to week days. Some peaks and outliers in the data appear to be associated with major US Holidays, demonstrating the importance of discrete events in interrupting both seasonality effects, in particular, and the probability of interaction more generally.


Revision [284]

Edited on 2010-11-17 10:56:13 by ChrisMarcum [corrected typo]
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My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This "snapshot" approach to social network research allows for in-depth analysis of how personal networks are activated in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group. My dissertation research sheds light on the processes by which age differences in social behavior arise.
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My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This "snapshot" approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group. My dissertation research sheds light on the processes by which age differences in social behavior arise.


Revision [270]

Edited on 2010-09-04 02:55:23 by ChrisMarcum [boom]
Additions:
Both old age and poor health are states that are associated with feelings of loneliness, increased risk of social isolation, and in this case, spending time alone. Aging and poor health are also positively associated and we expect that the age effect of spending time alone will vary by health status. The figure illustrates the interaction between age and subjective health status on the expected number of hours spent alone. The dependent variable counts time that could have been spent with other people, and thus excludes certain personal activities and sleeping (and working activities because of ATUS coding protocols). Younger people in poor health are more different from younger people in good health than their older counterparts, in terms of spending time alone. Indeed, the difference in hours spent alone between being in bad health and being in good health declines with age. This suggests that the marginal effect of aging on increased time spent alone out-paces the effect of declining health status associated with aging. This figure plots the gross interaction effects and does not control for other exogenous factors that may shape the relationship, such as widowhood or retirement statuses.
Deletions:
Both old age and poor health are states that are associated with feelings of loneliness, increased risk of social isolation, and in this case, spending time alone. Aging and poor health are also positively associated' we expect that the age effect of spending time alone will vary by health status. The figure illustrates the interaction between age and subjective health status on the expected number of hours spent alone. The dependent variable counts time that could have been spent with other people, and thus excludes certain personal activities and sleeping (and working activities because of ATUS coding protocols). Younger people in poor health are more different from younger people in good health than their older counterparts, in terms of spending time alone. Indeed, the difference in hours spent alone between being in bad health and being in good health declines with age. This suggests that the marginal effect of aging on increased time spent alone out paces the effect of declining health status associated with aging. This figure plots the gross interaction effects and does not control for other exogenous factors that may shape the relationship, such as widowhood or retirement statuses.


Revision [269]

Edited on 2010-09-04 02:53:19 by ChrisMarcum [corrected wording of ageXstatuses]
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Work and family life often shape who we interact with. Two of the ways in which the work/family dynamic influence social interaction is through the different social contexts associated with various marital and employment statuses. This is especially salient for shaping how much time we spend with people outside one's household. Of course, people of different ages have different propensities to fall into one or another marital and employment statuses. We would expect that the effect of marital status and employment status on social time with non-kin to vary with age. The first panel plots the average number of hours of social time spent with Non-Kin relations by the age by employment status interaction between persons who are employed (the baseline), unemployed, retired, and not in the labor force for other reasons (i.e., education or disability). The second panel plots the results for the age by marital status interaction between persons who are currently married (or living as married, which is the baseline), never married, divorced (or separated), and widowed. These lines are derived from the posterior means of the Bayesian multivariate linear regression of social time spent with various types of relations and spent alone on covariates (MCMC draws n=1000). The big take-away from these figures is that age interacts with marital and employment status in very different ways. The differences between marital statuses at younger ages are greater than they are at older ages, suggesting that the effect of aging reduces the effect of marital status on the ability to spend time with non-kin. This is contrasted by the interaction between age and employment status, which shows an opposite pattern. The differences between employment statuses are smaller at younger ages than at older ages. By the [[http://www.analytictech.com/mb870/Readings/ryan-bernard_techniques_to_identify_themes_in.htm interocular percussion test]], work and family life compete in opposing directions to constrain interaction with friends, colleagues, and other non-kin across the life course.
Deletions:
Work and family life often shape who we interact with, particularly when it comes to spending time with people outside one's immediate family. Of course, people of different ages have different propensities to fall into one or more marital and employment statuses. We would expect that the effect of marital status and employment status on social time with non-kin to vary with age. The first panel plots the average number of hours of social time spent with Non-Kin relations by the age by employment status interaction between persons who are employed (the baseline), unemployed, retired, and not in the labor force for other reasons (i.e., education or disability). The second panel plots the results for the age by marital status interaction between persons who are currently married (or living as married, which is the baseline), never married, divorced (or separated), and widowed. These lines are derived from the posterior means of the Bayesian multivariate linear regression of social time spent with various types of relations and spent alone on covariates (MCMC draws n=1000). The big take-away from these figures is that age interacts with marital and employment status in very different ways. The differences between marital statuses at younger ages are greater than they are at older ages, suggesting that the effect of aging reduces the effect of marital status on the ability to spend time with non-kin. This is contrasted by the interaction between age and employment status, which shows an opposite pattern. The differences between employment statuses are smaller at younger ages than at older ages. By the [[http://www.analytictech.com/mb870/Readings/ryan-bernard_techniques_to_identify_themes_in.htm interocular percussion test]], work and family life compete in opposing directions to constrain interaction with friends, colleagues, and other non-kin across the life course.


Revision [268]

Edited on 2010-09-03 16:34:07 by ChrisMarcum [boom]
Additions:
Work and family life often shape who we interact with, particularly when it comes to spending time with people outside one's immediate family. Of course, people of different ages have different propensities to fall into one or more marital and employment statuses. We would expect that the effect of marital status and employment status on social time with non-kin to vary with age. The first panel plots the average number of hours of social time spent with Non-Kin relations by the age by employment status interaction between persons who are employed (the baseline), unemployed, retired, and not in the labor force for other reasons (i.e., education or disability). The second panel plots the results for the age by marital status interaction between persons who are currently married (or living as married, which is the baseline), never married, divorced (or separated), and widowed. These lines are derived from the posterior means of the Bayesian multivariate linear regression of social time spent with various types of relations and spent alone on covariates (MCMC draws n=1000). The big take-away from these figures is that age interacts with marital and employment status in very different ways. The differences between marital statuses at younger ages are greater than they are at older ages, suggesting that the effect of aging reduces the effect of marital status on the ability to spend time with non-kin. This is contrasted by the interaction between age and employment status, which shows an opposite pattern. The differences between employment statuses are smaller at younger ages than at older ages. By the [[http://www.analytictech.com/mb870/Readings/ryan-bernard_techniques_to_identify_themes_in.htm interocular percussion test]], work and family life compete in opposing directions to constrain interaction with friends, colleagues, and other non-kin across the life course.
Deletions:
Work and family life often shape who we interact with, particularly when it comes to spending time with people outside one's immediate family. Of course, people of different ages have different propensities to fall into one or more marital and employment statuses. We would expect that the effect of marital status and employment status on social time with non-kin to vary with age. The first panel plots the average number of hours of social time spent with Non-Kin relations by the age by employment status interaction between persons who are employed (the baseline), unemployed, retired, and not in the labor force for other reasons (i.e., education or disability). The second panel plots the results for the age by marital status interaction between persons who are currently married (or living as married, which is the baseline), never married, divorced (or separated), and widowed. These lines are derived from the posterior means of the Bayesian multivariate linear regression of social time spent with various types of relations and spent alone on covariates (MCMC draws n=1000). The big take-away from these figures is that the age interacts with marital and employment status in very different ways. The differences between marital statuses at younger ages are greater than they are at older ages, suggesting that the effect of aging reduces the effect of marital status on the ability to spend time with non-kin. This is contrasted by the interaction between age and employment status, which shows an opposite pattern. The differences between employment statuses are smaller at younger ages than at older ages.


Revision [267]

Edited on 2010-09-03 16:28:13 by ChrisMarcum [fixed a typo]
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""<a href="documents/AgeXStatusXNonKin.pdf"><img src="documents/nonkinagestatus.png"></a>""**Interaction between Age and Employment & Marital Statuses on Time Spent with Non-Kin**
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""<a href="documents/AgeXStatusXNonKin.pdf"><img src="documents/nonkinagestatuse.png"></a>""**Interaction between Age and Employment & Marital Statuses on Time Spent with Non-Kin**


Revision [266]

Edited on 2010-09-03 16:27:16 by ChrisMarcum [added another summary]
Additions:
""<a href="documents/AgeXStatusXNonKin.pdf"><img src="documents/nonkinagestatuse.png"></a>""**Interaction between Age and Employment & Marital Statuses on Time Spent with Non-Kin**
Work and family life often shape who we interact with, particularly when it comes to spending time with people outside one's immediate family. Of course, people of different ages have different propensities to fall into one or more marital and employment statuses. We would expect that the effect of marital status and employment status on social time with non-kin to vary with age. The first panel plots the average number of hours of social time spent with Non-Kin relations by the age by employment status interaction between persons who are employed (the baseline), unemployed, retired, and not in the labor force for other reasons (i.e., education or disability). The second panel plots the results for the age by marital status interaction between persons who are currently married (or living as married, which is the baseline), never married, divorced (or separated), and widowed. These lines are derived from the posterior means of the Bayesian multivariate linear regression of social time spent with various types of relations and spent alone on covariates (MCMC draws n=1000). The big take-away from these figures is that the age interacts with marital and employment status in very different ways. The differences between marital statuses at younger ages are greater than they are at older ages, suggesting that the effect of aging reduces the effect of marital status on the ability to spend time with non-kin. This is contrasted by the interaction between age and employment status, which shows an opposite pattern. The differences between employment statuses are smaller at younger ages than at older ages.
Note: The errors from the regressions were allowed to correlate, which accounts for the clustering of relationship types (i.e., within a family) and the negative relationship between spending time alone with all other types of social time.


Revision [224]

Edited on 2010-08-11 01:43:01 by ChrisMarcum [added Susan's link]
Additions:
I work closely, or have written papers, with UCI professors (in alphabetical order) [[http://www.faculty.uci.edu/profile.cfm?faculty_id=4670 Susan K. Brown]], [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. I have also collaborated with other graduate students, including (in alphabetical order) [[http://www.ryanacton.com/ Ryan Acton]] (UCI), [[http://sobek.colorado.edu/SOC/Graduate/vitae/Bevc_CVSept2009.pdf Christine Bevc]] (Univ. Colorado), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).
Deletions:
I work closely, or have written papers, with UCI professors (in alphabetical order) Susan K. Brown, [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. I have also collaborated with other graduate students, including (in alphabetical order) [[http://www.ryanacton.com/ Ryan Acton]] (UCI), [[http://sobek.colorado.edu/SOC/Graduate/vitae/Bevc_CVSept2009.pdf Christine Bevc]] (Univ. Colorado), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).


Revision [218]

Edited on 2010-08-04 15:07:23 by ChrisMarcum [added age health plot]
Additions:
""<a href="documents/AloneXAgeXHealth.pdf"><img src="documents/aloneagehealthlines.png"></a>""**Interaction between Age and Subjective Health Status on Time Spent Alone**
Both old age and poor health are states that are associated with feelings of loneliness, increased risk of social isolation, and in this case, spending time alone. Aging and poor health are also positively associated' we expect that the age effect of spending time alone will vary by health status. The figure illustrates the interaction between age and subjective health status on the expected number of hours spent alone. The dependent variable counts time that could have been spent with other people, and thus excludes certain personal activities and sleeping (and working activities because of ATUS coding protocols). Younger people in poor health are more different from younger people in good health than their older counterparts, in terms of spending time alone. Indeed, the difference in hours spent alone between being in bad health and being in good health declines with age. This suggests that the marginal effect of aging on increased time spent alone out paces the effect of declining health status associated with aging. This figure plots the gross interaction effects and does not control for other exogenous factors that may shape the relationship, such as widowhood or retirement statuses.


Revision [215]

Edited on 2010-07-30 10:05:49 by ChrisMarcum [corrected typo]
Additions:
This figure illustrates differences in the activity sequences from 2000 randomly selected individuals over the course of a single day in two age groups: 25-34 year olds to those age 75 and older. Each row in the figure represents one individual and each colored bar represents an activity spell. The matrix that the figure represents is sorted by [[http://en.wikipedia.org/wiki/Hamming_distance Hamming distance]], with more similarly clustered activity sequences closer together and more distant ones further apart. The figure clearly shows that the younger group has greater activity heterogeneity in both the types of activities and the order in which they are done, than the older group. In particular, and as expected, domestic and work production activities are replaced by sleeping and leisure activities moving from 25-34 to the 75 and up groups.
Deletions:
This figures illustrates differences in the activity sequences from 2000 randomly selected individuals over the course of a single day in two age groups: 25-34 year olds to those age 75 and older. Each row in the figure represents one individual and each colored bar represents an activity spell. The matrix that the figure represents is sorted by [[http://en.wikipedia.org/wiki/Hamming_distance Hamming distance]], with more similarly clustered activity sequences closer together and more distant ones further apart. The figure clearly shows that the younger group has greater activity heterogeneity in both the types of activities and the order in which they are done, than the older group. In particular, and as expected, domestic and work production activities are replaced by sleeping and leisure activities moving from 25-34 to the 75 and up groups.


Revision [214]

Edited on 2010-07-30 00:09:04 by ChrisMarcum [added resources]
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====Curriculum Vitae====
====Resources====
There are a number of research resources I use to stay productive. These include: [[http://cran.r-project.org/ R]] for statistical computing; [[http://www.ctan.org/ Latex]] for document typesetting; and [[http://subversion.tigris.org/ subversion]] and [[http://samba.org/rsync/ rsync]] for archiving and organizing my digital files. For the most part, I try to maintain a library of software that is open-source and free.
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@@====Curriculum Vitae====@@


Revision [213]

Edited on 2010-07-29 23:57:09 by ChrisMarcum [took stuff away]
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@@(Currently Under Development)@@


Revision [210]

Edited on 2010-07-29 23:45:39 by ChrisMarcum [addendum]
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Here are few of the scientific posters I have presented at conferences over the past two years.
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Here are few of the scientific posters I have presented over the past two years.


Revision [209]

Edited on 2010-07-29 23:44:48 by ChrisMarcum [added citation]
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The average number of hours spent with different types of people and time spent alone is plotted against age, with 95% probability bands, in this figure. The figure illustrates how older people spend less time with others overall, and more time alone. Time spent with children declines after middle-adult and continues on a downward trajectory through old-age, while time spent with other relatives (non-spousal, non-children relatives) flatlines at about 2 hours in an average day by the late 20s. The irregular M-shaped curve of spousal time is so-shaped due to an increase in divorces in middle-adulthood followed by widowhood in very old age. Clearly, there is great variability in the amount of time people spend with different types of relations across the life course.
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The average number of hours spent with different types of people is plotted against age, with 95% probability bands in this figure.


Revision [208]

Edited on 2010-07-29 23:37:58 by ChrisMarcum [added a figure]
Additions:
""<a href="documents/fig_relXage.pdf"><img src="documents/agecurve.png"></a>""**Social Time with Select Relations (in Hours) by Age**
The average number of hours spent with different types of people is plotted against age, with 95% probability bands in this figure.


Revision [207]

Edited on 2010-07-29 23:35:24 by ChrisMarcum [added another image]
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===Dissertation Research Findings===


Revision [206]

Edited on 2010-07-29 20:33:20 by ChrisMarcum [update]
Additions:
A couple of illustrations from my dissertation research are provided below.
""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>""**Comparing Age Differences in Diurnal Activity Sequences**
Deletions:
**A couple of illustrations from my dissertation research are provided below.
**==Comparing Age Differences in Diurnal Activity Sequences==
""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>""


Revision [205]

Edited on 2010-07-29 20:32:22 by ChrisMarcum [update]
Additions:
**A couple of illustrations from my dissertation research are provided below.
**==Comparing Age Differences in Diurnal Activity Sequences==
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A couple of illustrations from my dissertation research are provided below.
==Comparing Age Differences in Diurnal Activity Sequences==


Revision [204]

Edited on 2010-07-29 20:31:43 by ChrisMarcum [added a pic and a description]
Additions:
==Comparing Age Differences in Diurnal Activity Sequences==
""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>""
This figures illustrates differences in the activity sequences from 2000 randomly selected individuals over the course of a single day in two age groups: 25-34 year olds to those age 75 and older. Each row in the figure represents one individual and each colored bar represents an activity spell. The matrix that the figure represents is sorted by [[http://en.wikipedia.org/wiki/Hamming_distance Hamming distance]], with more similarly clustered activity sequences closer together and more distant ones further apart. The figure clearly shows that the younger group has greater activity heterogeneity in both the types of activities and the order in which they are done, than the older group. In particular, and as expected, domestic and work production activities are replaced by sleeping and leisure activities moving from 25-34 to the 75 and up groups.
Deletions:
{{table columns="3" cellpadding="1" cells="Comparing Age Differences in Diurnal Activity Sequences;header2;""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>"";cell2"}}


Revision [203]

Edited on 2010-07-29 20:24:05 by ChrisMarcum [added a pic and a description]
Additions:
{{table columns="3" cellpadding="1" cells="Comparing Age Differences in Diurnal Activity Sequences;header2;""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>"";cell2"}}
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{{table columns="3" cellpadding="1" cells="Comparing Age Differences in Diurnal Activity Sequences;header2;<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>;cell2"}}


Revision [202]

Edited on 2010-07-29 20:23:46 by ChrisMarcum [try]
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{{table columns="3" cellpadding="1" cells="Comparing Age Differences in Diurnal Activity Sequences;header2;<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>;cell2"}}
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""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>""


Revision [201]

Edited on 2010-07-29 20:22:31 by ChrisMarcum [added a pic]
Additions:
A couple of illustrations from my dissertation research are provided below.
""<a href="documents/fig_actseqcompare.pdf"><img src="documents/ageact.png"></a>""
Deletions:
Several illustrations from my dissertation research are provided below.


Revision [200]

Edited on 2010-07-29 19:47:20 by ChrisMarcum [added a pic]
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{{files}}
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{{file}}


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Edited on 2010-07-29 19:46:55 by ChrisMarcum [added a pic]
Additions:
Here are few of the scientific posters I have presented over the past two years.
{{file}}
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Here are few of the scientific posters I have presented over the past few years.


Revision [198]

Edited on 2010-07-29 19:12:08 by ChrisMarcum [added a pic]
Additions:
Several illustrations from my dissertation research are provided below.
Deletions:
Several illustrations from the dissertation research are provided below.


Revision [197]

Edited on 2010-07-29 19:11:59 by ChrisMarcum [added a pic]
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{{image url="images/me/dsc00798.jpg/" title="text" alt="text"}}{{image url="url" title="text" alt="text"}}


Revision [196]

Edited on 2010-07-29 19:11:20 by ChrisMarcum [added a pic]
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{{image url="images/me/dsc00798.jpg/" title="text" alt="text"}}{{image url="url" title="text" alt="text"}}
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{{image url="/images/me/dsc00798.jpg/" title="text" alt="text"}}{{image url="url" title="text" alt="text"}}


Revision [195]

Edited on 2010-07-29 19:11:09 by ChrisMarcum [added a pic]
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{{image url="/images/me/dsc00798.jpg/" title="text" alt="text"}}{{image url="url" title="text" alt="text"}}
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""Some html""


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Edited on 2010-07-29 19:07:29 by ChrisMarcum [added a pic]
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""Some html""


Revision [193]

Edited on 2010-07-29 18:58:38 by ChrisMarcum [Added some sections and content]
Additions:
My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This "snapshot" approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group. My dissertation research sheds light on the processes by which age differences in social behavior arise.
===Dissertation Research Findings===
Several illustrations from the dissertation research are provided below.
===Posters===
Here are few of the scientific posters I have presented over the past few years.
Deletions:
My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This "snapshot" approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group.


Revision [192]

Edited on 2010-07-29 18:52:04 by ChrisMarcum [added cv]
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[[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]] [[http://www.chrismarcum.com/documents/cv_csm.html html version]]
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[[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]]


Revision [191]

Edited on 2010-06-30 13:15:05 by ChrisMarcum [updated]
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In addition to my dissertation, I have a number of other research interests. Briefly, I have worked on projects related to organizational collaboration networks, population-level attitudinal change, and statistical research methods.
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In addition to my dissertation, I have a number of other research interests.


Revision [190]

Edited on 2010-06-30 13:13:17 by ChrisMarcum [added person links]
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====Other Research====
In addition to my dissertation, I have a number of other research interests.
====Collaborators====
I work closely, or have written papers, with UCI professors (in alphabetical order) Susan K. Brown, [[http://www.carterbutts.com Carter T. Butts]], [[https://webfiles.uci.edu/noymer/web/ Andrew Noymer]], [[http://www.faculty.uci.edu/profile.cfm?faculty_id=5099 Joy E. Pixley]], and [[http://www.faculty.uci.edu/profile.cfm?faculty_id=2603 Judith Treas]]. I have also collaborated with other graduate students, including (in alphabetical order) [[http://www.ryanacton.com/ Ryan Acton]] (UCI), [[http://sobek.colorado.edu/SOC/Graduate/vitae/Bevc_CVSept2009.pdf Christine Bevc]] (Univ. Colorado), [[http://www.socsci.uci.edu/~sgsa/2005/2005-lorien.html Lorien Jasny]] (UCI), and [[http://www.princeton.edu/~djschnei/ Daniel Schneider]] (Princeton).


Revision [186]

Edited on 2010-06-30 12:36:16 by ChrisMarcum [edited cv]
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My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This "snapshot" approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group.
@@====Curriculum Vitae====@@
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My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This ``snapshot'' approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group.
@@====CV====@@


Revision [185]

Edited on 2010-06-30 12:34:40 by ChrisMarcum [added]
Additions:
[[http://www.chrismarcum.com/documents/cv_csm.pdf pdf version]]
Deletions:
[[http://www.chrismarcum.com/documents/cv_csmp.pdf pdf version]]


Revision [184]

Edited on 2010-06-30 12:34:04 by ChrisMarcum [added some content to the research page]
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@@(Currently Under Development)@@

====Dissertation Research====
My dissertation research focuses on structural explanations of age-differences in daily social interaction. I use the [[http://www.bls.gov/tus/ American Time Use Survey]] to model patterns of who interacts with whom, doing what, at what time, and how long, in an average day. This ``snapshot'' approach to social network research allows for in-depth analysis of how personal networks are used in an everyday context. My emphasis for this research is on how American's personal networks differ across the life course, and especially by age group.

@@====CV====@@
[[http://www.chrismarcum.com/documents/cv_csmp.pdf pdf version]]
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(Currently Under Development)


Revision [158]

The oldest known version of this page was created on 2010-02-12 16:51:15 by ChrisMarcum [added some content to the research page]
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