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2012 - The Mathematical Association of America MathFest Words: 140 words || 
1. Staab, Peter. "How Many Unique 4 by 4 Natural Magic Squares are There?" Paper presented at the annual meeting of the The Mathematical Association of America MathFest, Monona Terrace Convention Center, Madison, WI, Aug 02, 2012 <Not Available>. 2019-10-20 <>
Publication Type: Conference Paper/Unpublished Manuscript
Review Method: Peer Reviewed
Abstract: If we think of a magic squares as matrices, there are 7040 unique natural magic squares that are often classified into one of 12 types, called Dudeney types. Historically, two magic squares are considered equal if you can rotate or reflect one to get the other. In this light each magic square has another 7 related ones, which reduces the total number of unique ones 880. We seek to reduce this number further by finding families of magic squares that are formed by multiplication by permutation matrices. Depending on the Dudeney type of a magic square, there are between 16 and 384 in its family. The determination of the family of every magic square can determine the total number of unique magic squares. Come join us to find the answer to the title question.

2015 - SRCD Biennial Meeting Words: 455 words || 
2. Tenenbaum, Elena., Sheinkopf, Stephen., Miller-Loncar, Cynthia., Messinger, Daniel., Tronick, Edward., LaGasse, Linda., Seifer, Ronald., Shankaran, Seetha., Bada, Henrietta., Bauer, Charles., Whitaker, Toni., Hammond, Jane. and Lester, Barry. "Maternal and Infant Affect at 4 months Predicts Performance and Verbal IQ at 4 and 7 Years in Diverse Population" Paper presented at the annual meeting of the SRCD Biennial Meeting, Pennsylvania Convention Center and the Philadelphia Marriott Downtown Hotel, Philadelphia, PA, Mar 19, 2015 <Not Available>. 2019-10-20 <>
Publication Type: Individual Poster
Review Method: Peer Reviewed
Abstract: Learning in infancy often occurs in the context of dyadic interactions between mothers and their infants. Both parent and child bring characteristics to these interactions that contribute to the quantity and quality of opportunities the infant has to learn. Previous research has shown that a number of maternal (Dunham, Dunham, & Curwin, 1993; Hart & Risley, 1992; Hurtado, Marchman, & Fernald, 2008; Landry, Smith, Miller-Loncar, & Swank, 1997; Lester et al., 1995; Nicely, Tamis-LeMonda, & Bornstein, 1999; Tomasello & Farrar, 1986) and infant (Carpenter, Nagell, & Tomasello, 1998; Dixon & Shore, 1997; Morales, Mundy, Delgado, Yale, Neal, et al., 2000; Slomkowski, Nelson, Dunn, & Plomin, 1992; Young, Merin, Rogers, & Ozonoff, 2009) behaviors and characteristics during infancy hold predictive value for language and cognitive development later in childhood. Though we know that both infant and maternal behaviors and characteristics contribute to these developmental outcomes, the relative contribution of these endogenous and exogenous factors remains unresolved.

The current study used data from 570 participants in the Maternal-Lifestyle Study, a longitudinal study that investigated the effects of prenatal exposure to cocaine and associated risk factors on child development. The goal was to explore the relative contribution of maternal and infant affective behaviors during infancy on developmental outcomes in childhood. Affective behaviors were measured during 2 minute encounters between infants and their mothers and those same infants and an examiner during a face-to-face paradigm administered at 4 months. Outcome measures were WPPSI and WISC performance (PIQ) and verbal IQ (VIQ) scores at 4.5 and 7 years.

We used a 2-step linear regression with Step 1: demographic factors, maternal depression, and prenatal drug exposure, and Step 2: maternal positivity, maternal positive vocalizations, infant positivity during baseline face-to-face encounters with the mother and infant positivity with the examiner. Maternal positivity (β = .15,p< .05), maternal positive vocalizations (β = .20, p< .01), and infant positivity with the examiner (β = .12, p< .01) were significant predictors of VIQ at 4.5 years (Step 2 ΔR² = .03, p <.01). Maternal positivity (β = .18, p< .01) and maternal positive vocalizations (β = .18, p< .01) remained significant predictors of VIQ at 7 years. Maternal positive vocalizations were also predictive of PIQ at 4.5 years (β = .19, p< .01) while the effect of maternal affect was marginally significant (β = .11, p< .10) (Step 2 ΔR² = .02, p <.05).
These results suggest that maternal positivity during the infant period supports language and cognitive outcomes in high risk populations, while infants’ internal social positivity is relevant for verbal abilities specifically. Results are discussed in the context of clinical implications for identifying dyads most in need of targeted interventions and the potential mechanisms for those interventions at critical periods of development in early infancy.

2005 - American Sociological Association Pages: 29 pages || Words: 21535 words || 
3. Parks, Bradley. and Roberts, J.. "Understanding Vulnerability To Disasters: A Cross-National Analysis Of 4,000 Climate-Related Disasters" Paper presented at the annual meeting of the American Sociological Association, Marriott Hotel, Loews Philadelphia Hotel, Philadelphia, PA, Aug 12, 2005 Online <PDF>. 2019-10-20 <>
Publication Type: Conference Paper/Unpublished Manuscript
Abstract: In this paper, we find that that journalistic accounts and most expert case studies do not do justice to the complexity of causal forces producing and reproducing vulnerability to disasters. Using raw disaster data compiled by the US Office of Foreign Disaster Assistance (OFDA) and the Centre for Research on the Epidemiology of Disasters (CRED), we develop three cross-national measures of climate risk, based on 4,040 climate-related natural disasters between 1980 and 2002. These are population-adjusted rates of the cumulative number of people killed, made homeless, or otherwise affected by climate-related disasters (wind storms, flooding, drought, and heat waves) during the period. The most powerful predictors of vulnerability to climate disasters are a country’s level of urbanization, the security of its property rights regime, its coastal exposure, national income, and levels of domestic inequality. We also find that behind these current “proximate” causes of a country’s ability to cope with climate disasters is the way it is “inserted” into the world economy. Countries with a colonial legacy of extraction of its resources – as measured by the narrowness of its export base – are structurally predisposed toward higher levels of social, economic, and institutional vulnerability. These structural disadvantages, we argue, limit their ability to protect themselves from poverty and environmental degradation, but also the growing frequency and strength of climate-related disasters. Disaster relief and prevention that treats only symptoms and not political and economic structure are doomed to longer-term failure.
Supporting Publications:
Supporting Document

2006 - American Studies Association Words: 502 words || 
4. Stoever, Jennifer. "“I Wouldn’t Change Puerto Rico by 4,000 New Yorks”: Tony Schwartz Records the Postwar Metropolis (1946-1958)" Paper presented at the annual meeting of the American Studies Association, Oct 12, 2006 <Not Available>. 2019-10-20 <>
Publication Type: Conference Paper/Unpublished Manuscript
Abstract: Black and Puerto Rican children bang out rhythms on trash cans and empty Pepsi bottles in a Harlem housing project. A Jewish grocer in Manhattan recounts the story of a dying friend whose last words told police “it was white folks that killed me, not colored folks.” A man in Spanish Harlem leans over a jukebox playing a nostalgic lament, translating the words that float past: “I wouldn’t change Puerto Rico by 4,000 New Yorks.” These unique and surprisingly resistant sonic moments are culled from the “sound effects” recordings made by Tony Schwartz on Folkways Records between 1946 and 1958.

Long before the eclectic mixing of the IPOD, Schwartz was splicing diverse snippets of urban life recorded through his wrist microphone on the streets of Manhattan. Schwartz’s audio productions form a rich and indispensable cultural archive that has yet to be mined by American Studies scholars. Linking the insights of the field of Sound Studies with my work on aurality and African American literature, I perform a “close listening” of Schwartz’ key New York recordings, exploring how albums like “New York 19” (1954) and “Nueva York: A Tape Documentary of Puerto Rican New Yorkers” (1955) function to construct New York as a transnational city that is music to white ears.

During the transitional postwar era of urban conflict, increased segregation, and accelerating “white flight,” Schwartz made 19 LPs for Folkways that simultaneously affirm and challenge the notion that music and audio culture function as forces of social cohesion in the United States. On one hand, Schwartz couples swift juxtaposition with seamless editing to present a vibrant, multicultural urban environment where the sounds of a black cab driver singing spirituals can co-exist with a Jewish salesman hawking Parker pens. Through an auditory recreation of the postwar metropolis—complete with rumbling El Trains, honking horns, and jackhammers—Schwartz attempts to reclaim the noisy, ethnically diverse urban streets as the preeminent crucible of American identity in the face of increasing white migration to the quiet, sterile, and secluded suburbs.

However, although invisible, the mechanical ear of the microphone is far from objective. While Schwartz presents his work as typical of what might be experienced on any day in 1950s New York, he is carefully editing the city, re-mixing its sounds primarily for an audience of eavesdropping white ears. Schwartz persuasively uses the sonic medium to make the threatening cultural “noise” of “the Other” recognizable as meaningful sound to the default (white) American ear. I argue that Schwartz’ recordings provide an important insight into an undertheorized aspect of race in America: the presence of an aural equivalent to the “white gaze.” Schwartz’ desire to provide his audience with a cultural exchange that will “enable you to hear the people around you with a new awareness and enjoyment,” attempts to blur the binary of “Us vs. Them,” even as it exposes the ways in which race, urban space, and national identity are powerfully constructed and understood through the ear.

2008 - MWERA Annual Meeting Pages: 6 pages || Words: 1594 words || 
5. AN, QIAN., Li, Yanju., Brooks, Gordon. and Johanson, George. "Determining Sample Size for Tukey MCP in 4-Group ANOVA" Paper presented at the annual meeting of the MWERA Annual Meeting, Westin Great Southern Hotel, Columbus, Ohio, Oct 15, 2008 Online <PDF>. 2019-10-20 <>
Publication Type: Paper Presentation
Abstract: The determination of an appropriate sample size is a difficult, but critically important, element in the research design process. Sample sizes in ANOVA are most often based on an overall standardized difference in the means, but these recommended sample sizes provide statistical power only for the overall test. Adequate sample size for the omnibus test does not necessarily provide sufficient statistical power for the post hoc multiple comparisons typically performed following a statistically significant omnibus test. The purpose of this paper is to demonstrate how Monte Carlo techniques can be used to determine sample sizes that will provide adequate statistical power for Tukey post hoc multiple comparison procedure (MCP) in 4-group ANOVA. Sample size tables will be created from the results.

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