James Cook

Bio: James Cook is an academic researcher from University of Maine at Augusta. The author has contributed to research in topics: Social media & Medicine. The author has an hindex of 12, co-authored 43 publications receiving 15606 citations. Previous affiliations of James Cook include Duke University & University of Arizona.

Birds of a Feather: Homophily in Social Networks

Abstract: Similarity breeds connection. This principle—the homophily principle—structures network ties of every type, including marriage, friendship, work, advice, support, information transfer, exchange, comembership, and other types of relationship. The result is that people's personal networks are homogeneous with regard to many sociodemographic, behavioral, and intrapersonal characteristics. Homophily limits people's social worlds in a way that has powerful implications for the information they receive, the attitudes they form, and the interactions they experience. Homophily in race and ethnicity creates the strongest divides in our personal environments, with age, religion, education, occupation, and gender following in roughly that order. Geographic propinquity, families, organizations, and isomorphic positions in social systems all create contexts in which homophilous relations form. Ties between nonsimilar individuals also dissolve at a higher rate, which sets the stage for the formation of niches (localize...

POLITICS AND INSTITUTIONALISM: Explaining Durability and Change

Abstract: ▪ Abstract From the complex literatures on “institutionalisms” in political science and sociology, various components of institutional change are identified: mutability, contradiction, multiplicity, containment and diffusion, learning and innovation, and mediation. This exercise results in a number of clear prescriptions for the analysis of politics and institutional change: disaggregate institutions into schemas and resources; decompose institutional durability into processes of reproduction, disruption, and response to disruption; and, above all, appreciate the multiplicity and heterogeneity of the institutions that make up the social world. Recent empirical work on identities, interests, alternatives, and political innovation illustrates how political scientists and sociologists have begun to document the consequences of institutional contradiction and multiplicity and to trace the workings of institutional containment, diffusion, and mediation.

The Journals of Captain James Cook on His Voyages of Discovery

Abstract: Vol I: introduction to the first voyage note on Polynesian history textual introduction subordinate manuscript sources - Cook's log, other logs and journals, civilians' journals the printed sources the graphic records note on the printing of the text note on the annotation the instructions the journal appendices - Cook's letters and reports describing the voyage, the Royal Society and the voyage. Vol II: textual introduction subordinate manuscript sources - Cook's log, other logs and journals, civilians' journals the printed sources the graphic records note on the annotation the instructions the journal appendices - Cook's letters and reports on and about the voyage, the controversy over the "Resolution", the Board of Longitude and the voyage, extracts from officers' records. Vol III, part I: textual introduction subordinate manuscript sources - logs and journals, miscellaneous the printed sources the graphic records notes on the printing the instructions the journal supplement to Cook's journal. Vol III, part II: appendices - Anderson's journal, Samwell's journal, extracts from officers' journals, the ships' companies, calendar of documents.

A Voyage Towards the South Pole and Round the World

Abstract: Yet right here, we will show you extraordinary thing to be able constantly read guide a voyage towards the south pole and round the world by james cook%0D anywhere as well as whenever you occur and time. Guide a voyage towards the south pole and round the world by james cook%0D by only can assist you to recognize having guide to read whenever. It won't obligate you to always bring the thick book any place you go. You can just maintain them on the kitchen appliance or on soft documents in your computer system to constantly review the enclosure during that time.

Birds of a Feather: Homophily in Social Networks

Abstract: Similarity breeds connection. This principle—the homophily principle—structures network ties of every type, including marriage, friendship, work, advice, support, information transfer, exchange, comembership, and other types of relationship. The result is that people's personal networks are homogeneous with regard to many sociodemographic, behavioral, and intrapersonal characteristics. Homophily limits people's social worlds in a way that has powerful implications for the information they receive, the attitudes they form, and the interactions they experience. Homophily in race and ethnicity creates the strongest divides in our personal environments, with age, religion, education, occupation, and gender following in roughly that order. Geographic propinquity, families, organizations, and isomorphic positions in social systems all create contexts in which homophilous relations form. Ties between nonsimilar individuals also dissolve at a higher rate, which sets the stage for the formation of niches (localize...

In a Different Voice. Psychological Theory and Women’s Development. Cambridge, MA (Harvard University Press) 1982.

Abstract: Introduction 1. Woman's Place in Man's Life Cycle 2. Images of Relationship 3. Concepts of Self and Morality 4. Crisis and Transition 5. Women's Rights and Women's Judgment 6. Visions of Maturity References Index of Study Participants General Index

What is Twitter, a social network or a news media?

Abstract: Twitter, a microblogging service less than three years old, commands more than 41 million users as of July 2009 and is growing fast. Twitter users tweet about any topic within the 140-character limit and follow others to receive their tweets. The goal of this paper is to study the topological characteristics of Twitter and its power as a new medium of information sharing.We have crawled the entire Twitter site and obtained 41.7 million user profiles, 1.47 billion social relations, 4,262 trending topics, and 106 million tweets. In its follower-following topology analysis we have found a non-power-law follower distribution, a short effective diameter, and low reciprocity, which all mark a deviation from known characteristics of human social networks [28]. In order to identify influentials on Twitter, we have ranked users by the number of followers and by PageRank and found two rankings to be similar. Ranking by retweets differs from the previous two rankings, indicating a gap in influence inferred from the number of followers and that from the popularity of one's tweets. We have analyzed the tweets of top trending topics and reported on their temporal behavior and user participation. We have classified the trending topics based on the active period and the tweets and show that the majority (over 85%) of topics are headline news or persistent news in nature. A closer look at retweets reveals that any retweeted tweet is to reach an average of 1,000 users no matter what the number of followers is of the original tweet. Once retweeted, a tweet gets retweeted almost instantly on next hops, signifying fast diffusion of information after the 1st retweet.To the best of our knowledge this work is the first quantitative study on the entire Twittersphere and information diffusion on it.

The Spread of Obesity in a Large Social Network over 32 Years

Abstract: Background The prevalence of obesity has increased substantially over the past 30 years. We performed a quantitative analysis of the nature and extent of the person-to-person spread of obesity as a possible factor contributing to the obesity epidemic. Methods We evaluated a densely interconnected social network of 12,067 people assessed repeatedly from 1971 to 2003 as part of the Framingham Heart Study. The bodymass index was available for all subjects. We used longitudinal statistical models to examine whether weight gain in one person was associated with weight gain in his or her friends, siblings, spouse, and neighbors. Results Discernible clusters of obese persons (body-mass index [the weight in kilograms divided by the square of the height in meters], ≥30) were present in the network at all time points, and the clusters extended to three degrees of separation. These clusters did not appear to be solely attributable to the selective formation of social ties among obese persons. A person’s chances of becoming obese increased by 57% (95% confidence interval [CI], 6 to 123) if he or she had a friend who became obese in a given interval. Among pairs of adult siblings, if one sibling became obese, the chance that the other would become obese increased by 40% (95% CI, 21 to 60). If one spouse became obese, the likelihood that the other spouse would become obese increased by 37% (95% CI, 7 to 73). These effects were not seen among neighbors in the immediate geographic location. Persons of the same sex had relatively greater influence on each other than those of the opposite sex. The spread of smoking cessation did not account for the spread of obesity in the network. Conclusions Network phenomena appear to be relevant to the biologic and behavioral trait of obesity, and obesity appears to spread through social ties. These findings have implications for clinical and public health interventions.