Showing 3351 - 3400 of 5831 Items
Date: 1966-01-01
Access: Open access
- Exhibition catalogue from Bowdoin College Museum of Art. Includes and essay by Walter Gutman.
Date: 1996-03-19
Creator: A. E. Mcbride, A. Schlegel, K. Kirkegaard
Access: Open access
- A HeLa cDNA expression library was screened for human polypeptides that interacted with the poliovirus RNA-dependent RNA polymerase, 3D, using the two-hybrid system in the yeast Saccharomyces cerevisiae. Sam68 (Src- associated in mitosis, 68 kDa) emerged as the human cDNA that, when fused to a transcriptional activation domain, gave the strongest 3D interaction signal with a LexA-3D hybrid protein. 3D polymerase and Sam68 coimmunoprecipitated from infected human cell lysates with antibodies that recognized either protein. Upon poliovirus infection. Sam68 relocalized from the nucleus to the cytoplasm, where poliovirus replication occurs. Sam68 was isolated from infected cell lysates with an antibody that recognizes poliovirus protein 2C, suggesting that it is found on poliovirus-induced membranes upon which viral RNA synthesis occurs. These data, in combination with the known RNA- and protein-binding properties of Sam68, make Sam68 a strong candidate for a host protein with a functional role in poliovirus replication.
Date: 2013-04-12
Creator: PJ Rey, Nathan Jurgenson
Access: Open access
- Effective collaboration in communities requires information sharing. Though digital media may have certain affordances that encourage us to communicate differently than in the past, the communities these media facilitate are no less real than communities bound together by voice or text. In this paper, we argue that idea of “virtual communities” is misleading. Communities and collaboration occur not in some virtual world or a new, cyber, space, but instead they are part of one reality influenced simultaneously by materiality and the various flows of information—digital included. In light of this argument, we implore researchers to take serious the influence of digitality, and, specific to this conference, those looking primarily at digitality to take seriously the materiality, bodies, history, and politics not separate from but deeply interpenetrating the digital. The changes in community organization brought about by digital media should not be thought of or called “virtual” (e.g., “virtual teams” as opposed to real ones), but instead part of one augmented community. Presented at the Collaborative Organizations & Social Media Conference at Bowdoin College on April 12, 2013.
Date: 1966-01-01
Access: Open access
- Catalogue of an exhibition held at the Bowdoin College Museum of Art.
Date: 2014-05-20
Creator: Joshua J. Lawler, David J. Lewis, Erik Nelson, Andrew J. Plantinga, Stephen, Polasky, John C. Withey, David P. Helmers, Sebastián Martinuzzi, Derric Penningtonh
Access: Open access
- Providing food, timber, energy, housing, and other goods and services, while maintaining ecosystem functions and biodiversity that underpin their sustainable supply, is one of the great challenges of our time. Understanding the drivers of land-use change and how policies can alter land-use change will be critical to meeting this challenge. Here we project land-use change in the contiguous United States to 2051 under two plausible baseline trajectories of economic conditions to illustrate how differences in underlying market forces can have large impacts on land-use with cascading effects on ecosystem services and wildlife habitat. We project a large increase in croplands (28.2 million ha) under a scenario with high crop demand mirroring conditions starting in 2007, compared with a loss of cropland (11.2 million ha) mirroring conditions in the 1990s. Projected land-use changes result in increases in carbon storage, timber production, food production from increased yields, and >10% decreases in habitat for 25% of modeled species. We also analyze policy alternatives designed to encourage forest cover and natural landscapes and reduce urban expansion. Although these policy scenarios modify baseline land-use patterns, they do not reverse powerful underlying trends. Policy interventions need to be aggressive to significantly alter underlying land-use change trends and shift the trajectory of ecosystem service provision.
Date: 2018-01-01
Creator: Elena Gleed
Access: Open access
- Refugee Resettlement to the United States is a globalized and transnational process of making home. After Somali state collapse in 1991, more than a million displaced people fled to refugee camps across the Kenyan border. Today, over 12,000 Somali people now live in Lewiston, ME, an old mill town located along the Androscoggin River. As refugees are resettled by the United Nations High Commissioner for Refugees they enter a system created over fifty years ago in response to World War II. Using post-colonial and feminist scholarship, this project analyses the “female refugee” subject as she appears in the official discourse of resettlement processes. I trace the historical emergence of this subjectivity from an individual and work-based neoliberal American ethos to non-governmental organizations run by Somali women in Lewiston. Drawing from document analysis and ethnographic interviews, this paper explores the how Somali women are made to be “new American workers” in a process that combines western liberal feminism with ideas of integration and cultural orientation to the United States.
Date: 2020-07-01
Creator: Erik Nelson, Maggie Rogers, Spencer Wood, Jesse Chung, Bonnie, Keeler
Access: Open access
- We use large dataset on US lakes from 17 states to estimate the relationship between summertime visits to lakes as proxied by social media use and the lakes' water quality, amenities, and surrounding landscape features and socioeconomic conditions. Prior to estimating these relationships we worked on 1) selecting a parsimonious set of explanatory variables from a roster of more than 100 lake attributes and 2) accounting for the non-random pattern of missing water quality data. These steps 1) improved the interpretability of the estimated visit models and 2) widened our estimated models' scope of statistical inference. We used Machine Learning techniques to select parsimonious sets of explanatory variables and multiple imputation to estimate water quality at lakes missing this data. We found the following relationships between summertime visits to lake and their attributes across the 17-state region. First, we estimated that every additional meter of average summer-time Secchi depth between 1995 and 2014 was associated with at least 7.0% more summer-time visits to a lake between 2005 to 2014, all else equal. Second, we consistently found that lake amenities, such as beaches, boat launches, and public toilets, were more powerful predictors of visits than water quality. Third, we also found that visits to a lake were strongly influenced by the lake's accessibility and its distance to nearby lakes and the amenities the nearby lakes offered. Finally, our results highlight the biased results that "big data"-based research on recreation can generate if non-random missing observation patterns in the data are not corrected.
Date: 2003-07-01
Creator: Stephen M. Majercik, Michael L. Littman
Access: Open access
- We describe a new planning technique that efficiently solves probabilistic propositional contingent planning problems by converting them into instances of stochastic satisfiability (SSAT) and solving these problems instead. We make fundamental contributions in two areas: the solution of SSAT problems and the solution of stochastic planning problems. This is the first work extending the planning-as-satisfiability paradigm to stochastic domains. Our planner, ZANDER, can solve arbitrary, goal-oriented, finite-horizon partially observable Markov decision processes (POMDPs). An empirical study comparing ZANDER to seven other leading planners shows that its performance is competitive on a range of problems. © 2003 Elsevier Science B.V. All rights reserved.
Date: 2013-04-12
Creator: Peter Gloor
Access: Open access
- In this project we compare communication structure and content exchanged by members of creative, interdisciplinary teams of medical researchers, physicians, patients and caretakers with their creative output. We find that longitudinal social networking patterns and word usage predict creative performance. We collected the e-mail archives of 60 members of a community of researchers working on 12 projects improving various aspects of the daily lives of patients of Crohn’s disease. Our results indicate that more creative projects show a decrease in group density, while more actors are involved, and more emails are exchanged, suggesting that a more successful project attracts more attention from many different people. We also found that members of more creative projects use more emotional language, which gets more focused over time.
Date: 2019-03-01
Creator: Joseph Jay Sosa
Access: Open access
- From resistance fighter against Brazil’s military dictatorship to its first female president, Dilma Rousseff’s biography follows the historic arc of democratization in Brazil. Her 2016 impeachment was also the culminating event of numerous crises that polarized Brazilian society. To supporters, Rousseff’s removal without evidence constitutes an abrogation of democracy. To critics, Rousseff had to answer for an economic recession and widespread corruption (though she was not implicated in any investigation). This article examines the social imaginaries of the rightward turn that made Rousseff’s removal possible. Moving across diverse sets of public culture-street protests, journalistic accounts, political observations, and Rousseff’s speeches-the article uses sexism against Rousseff as an analytic to deconstruct the cultural narratives of Brazil’s rightward turn. A first section considers conservative efforts to paint Rousseff as a political subversive. These accusations drew on long-standing, right-wing Brazilian tropes around people who don’t “act right” in the moral, sexual, and ideological fields. A second section reads the maternal metaphors of Rousseff’s governance strategies against conflicting political renderings of the family-pitting left-wing versions of family rooted in economic development against Evangelical Christian accounts of the family as a gender-normative unit. A third section argues that Rousseff’s response to the charges against her turned her (and those who argued her case) into what Sara Ahmed calls “feminist killjoys.” Ultimately, the question of sexism in Rousseff’s impeachment shows how deep-seated cultural conservatisms can be activated in a new era of democratic uncertainty.
Date: 2021-01-01
Creator: Crystal Hall, Eric Chown, Fernando Nascimento
Access: Open access
- The Faculty of Digital and Computational Studies (DCS) at Bowdoin College proposes a critical, analytical framework, referred to as the ‘4As,’ as an interdisciplinary means to interpret, evaluate, and create the data, operations, and devices of computing across all domains of knowledge production. Following other disciplines that have developed in symbiotic relationships to one another, DCS puts computation in conversation with fields from across the arts, humanities, physical, and social sciences. Our foundational premise is the bidirectional influence between these disciplines and digital artifacts and computation. The 4As (artifact, architecture, abstraction, and agency) benefit from both the scepticism of the liberal arts in the face of ubiquitous digital processes and the analytical opening for examining questions pertaining to creative and imaginative alternatives to the digital and computational status quo. We provide an ultra-contemporary case study to demonstrate the framework in use.
Date: 2014-01-01
Creator: Patricia S. Thibodeau, Collin S. Roesler, Susan L. Drapeau, S. G. Prabhu Matondkar, Joaquim I., Goes, P. Jeremy Werdell
Access: Open access
- Coincident with shifting monsoon weather patterns over India, the phytoplankter Noctiluca miliaris has recently been observed to be dominating phytoplankton blooms in the northeastern Arabian Sea during the winter monsoons. Identifying the exact environmental and/or ecological conditions that favor this species has been hampered by the lack of concurrent environmental and biological observations on time and space scales relevant to ecologic and physiologic processes. We present a bio-optical proxy for N. miliaris measured on highly resolved depth scales coincident with hydrographic observations with the goal to identify conducive hydrographic conditions for the bloom. The proxy is derived from multichannel excitation chlorophyll a fluorescence and is validated with microscopy, pigment composition, and spectral absorption. Phytoplankton populations dominated by either diatoms or other dinoflagellates were additionally discerned. N. miliaris populations in full bloom were identified offshore in low-nutrient and low–N:P ratio surface waters within a narrow temperature and salinity range. These populations transitioned to high-biomass diatom-dominated coastal upwelling populations. A week later, the N. miliaris blooms were observed in declining phase, transitioning to very-low-biomass populations of non–N. miliaris dinoflagellates. There were no clear hydrographic conditions uniquely associated with the N. miliaris populations, although N. miliaris was not found in the upwelling or extremely oligotrophic waters. Taxonomic transitions were not discernible in the spatial structure of the bloom as identified by the ocean color Chl imagery, indicating that in situ observations may be necessary to resolve community structure, particularly for populations below the surface.
Date: 2017-01-01
Creator: T.S. Magney, B.A. Logan, J.S. Reblin, N.T. Boelman, J.U.H., Eitel, H.E. Greaves, K.L. Griffin, C.M. Prager, L.A. Vierling
Access: Open access
Date: 2013-04-13
Creator: George Ritzer
Access: Open access
- Many of “cyber-utopians” have lauded the Internet, especially social networking sites, for a variety of reasons, including making possible a dramatic and revolutionary increase in social collaboration (Benkler, 2007; Tapscott and Williams, 2006). The goal of this essay is to examine- and, at least in part, debunk- this claim from a new and unique sociological perspective- the relationship between collaboration and the “new means of prosumption”. Such an examination is suggested by the fact that collaboration is, by definition, a form of prosumption. That is, it involves one or more parties “producing” and other(s) “consuming” something of mutual interest and importance. However, the collaborative process, like prosumption more generally, is not as separable as all that. In fact, collaboration is a dialectical process in which those involved are continually changing their positions on the prosumption continuum (see below), sometimes they are more
Date: 2022-11-15
Creator: Elizabeth R. Chrastil, Caroline Rice, Mathias Goncalves, Kylie N. Moore, Syanah C. Wynn, Chantal E. Stern, Erika Nyhus
Access: Open access
- Active navigation seems to yield better spatial knowledge than passive navigation, but it is unclear how active decision-making influences learning and memory. Here, we examined the contributions of theta oscillations to memory-related exploration while testing theories about how they contribute to active learning. Using electroencephalography (EEG), we tested individuals on a maze-learning task in which they made discrete decisions about where to explore at each choice point in the maze. Half the participants were free to make active decisions at each choice point, and the other half passively explored by selecting a marked choice (matched to active exploration) at each intersection. Critically, all decisions were made when stationary, decoupling the active decision-making process from movement and speed factors, which is another prominent potential role for theta oscillations. Participants were then tested on their knowledge of the maze by traveling from object A to object B within the maze. Results show an advantage for active decision-making during learning and indicate that the active group had greater theta power during choice points in exploration, particularly in midfrontal channels. These findings demonstrate that active exploration is associated with theta oscillations during human spatial navigation, and that these oscillations are not exclusively related to movement or speed. Results demonstrating increased theta oscillations in prefrontal regions suggest communication with the hippocampus and integration of new information into memory. We also found evidence for alpha oscillations during active navigation, suggesting a role for attention as well. This study finds support for a general mnemonic role for theta oscillations during navigational learning. © 2022
Date: 2019-11-09
Creator: Sajjad Jaffer
Access: Open access
- Sajjad Jaffer ('95) shares remarks on his experience as an international student from Tanzania. He explores his own journey towards finding a sense of belonging in Brunswick, Maine, worlds away from his life in eastern Africa. Jaffer speaks of the vast privilege that Bowdoin offered compared to his life at home, while also commenting on the difficulties of being a Muslim student and minority student on campus at the time. Jaffer shares the way that he continues to support Bowdoin students coming from African countries. “This is dedicated to the first American-born in my family- my daughter, Sophie Malaika Jaffer. Sophie recently started middle school as a 6th grader at Castilleja School in Palo Alto, CA. Castilleja has a tradition of picking a word as a theme for the academic year. For 2019-20, the theme is “Belonging”. Acknowledgments I want to thank J. Taylor Crandall ’76 for sharing 3 valuable lessons over the years: 1. It is the student who makes the school, not just the school that makes the student 2. Where there’s a will, there’s a way 3. Carpe diem – seize the day This reflection was influenced and reinforced by 5 notable Polar Bears: 1. Staci Williams ’90 for being my Bowdoin Big Sister 2. Geoffrey Canada ’74 who changed the world 3. Hari Kondabolu ’04 for challenging Hank Azaria, creator of The Simpsons 4. Kenneth Chenault ’73 who reminded us that business is the last frontier in the civil rights movement 5. Alvin Hall ’74 my Bowdoin Soul Brother About Sajjad graduated from Bowdoin in 1995 with a double major in Computer Science, Government and minor in Economics. Sajjad lives in Silicon Valley and co-founded a technology company that applies data science to private equity investing. The firm was founded on 25 years of research from Wharton where he did his MBA and serves on the board of the Wharton Customer Analytics research center."
Date: 2019-11-09
Creator: Paul Wiley
Access: Open access
- Paul Wiley ‘71 talks about the “turnkey” moment that led him to know Bowdoin was where he wanted to go to college: when visiting Bowdoin as a prospective student, an incredible snowstorm hit Maine and he and his father arrived very late in the night Wiley talks about how surprised he was that Harry Warren, the Secretary of the College, was still awake waiting for them and made sure that they had everything they needed. Building upon this, Wiley shares some of the most important and impactful relationships he made at Bowdoin, particularly his football coach, who acted as a father figure, a gentle and forceful leader, and a great motivator. Wiley also talks about his special relationship with one of the Presidents of the College, Roger Howell, attending Bowdoin College with former College president Barry Mills ‘72, and being the first House Manager of AfAm.
Date: 1988-01-01
Creator: Patricia McGraw Anderson
Access: Open access
- The Architecture of Bowdoin College (1988), by Patricia McGraw Anderson, is the best single resource for the architectural history of Bowdoin’s campus buildings, gates, and memorials.
Date: 2021-06-01
Creator: Myron Child, Jack R. Bateman, Amir Jahangiri, Armando Reimer, Nicholas C., Lammers, Nica Sabouni, Diego Villamarin, Grace C. McKenzie-Smith, Justine E. Johnson, Daniel Jost, Hernan G. Garcia
Access: Open access
- 3D eukaryotic genome organization provides the structural basis for gene regulation. In Drosophila melanogaster, genome folding is characterized by somatic homolog pairing, where homologous chromosomes are intimately paired from end to end; however, how homologs identify one another and pair has remained mysterious. Recently, this process has been proposed to be driven by specifically interacting “buttons” encoded along chromosomes. Here, we turned this hypothesis into a quantitative biophysical model to demonstrate that a button-based mechanism can lead to chromosome-wide pairing. We tested our model using live-imaging measurements of chromosomal loci tagged with the MS2 and PP7 nascent RNA labeling systems. We show solid agreement between model predictions and experiments in the pairing dynamics of individual homologous loci. Our results strongly support a button-based mechanism of somatic homolog pairing in Drosophila and provide a theoretical framework for revealing the molecular identity and regulation of buttons.
Date: 1934-01-01
Access: Open access
- Descriptive catalogue of the Warren Classical Collection of Bowdoin College.
Date: 1980-01-01
Access: Open access
- Catalogue of an exhibition held at Bowdoin College Museum of Art, Mar. 14 to May 25, 1980.
Date: 1968-01-01
Access: Open access
- "One thousand copies of this catalogue were set in Linotype Janson and printed by the Anthoensen Press, Portland, Maine. Design by Thomas Cornell"--P. [28]
Date: 1981-01-01
Creator: Margaret Burke
Access: Open access
- "Type composition by the Anthoensen Press."
Date: 1930-01-01
Access: Open access
- "A considerably modified reprint of the preceding edition. [Descriptive catalogue of the art collections of Bowdoin college] compiled by the late Professor Henry Johnson along with a verbatim reprint of his descriptive catalogue of the Bowdoin collection of old masters' drawings."--Prefatory note
Date: 1971-01-01
Access: Open access
- Catalogue of an exhibition held at Bowdoin College Museum of Art, Nov. 5-Dec. 19, 1971 and the Art Museum, Princeton University, Jan. 14-Feb. 13, 1972.
Date: 2012-08-30
Creator: Mary Rogalski
Access: Open access
Date: 2000-04-01
Creator: William R. Jackman, James A. Langeland, Charles B. Kimmel
Access: Open access
- The vertebrate embryonic hindbrain is segmented into rhombomeres. Gene expression studies suggest that amphioxus, the closest invertebrate relative of vertebrates, has a hindbrain homolog. However, this region is not overtly segmented in amphioxus, raising the question of how hindbrain segmentation arose in chordate evolution. Vertebrate hindbrain segmentation includes the patterning of cranial motor neurons, which can be identified by their expression of the LIM-homeodomain transcription factor islet1. To learn if the amphioxus hindbrain homolog is cryptically segmented, we cloned an amphioxus gene closely related to islet1, which we named simply islet. We report that amphioxus islet expression includes a domain of segmentally arranged cells in the ventral hindbrain homolog. We hypothesize that these cells are developing motor neurons and reveal a form of hindbrain segmentation in amphioxus. Hence, vertebrate rhombomeres may derive from a cryptically segmented brain present in the amphioxus/vertebrate ancestor. Other islet expression domains provide evidence for amphioxus homologs of the pineal gland, adenohypophysis, and endocrine pancreas. Surprisingly, homologs of vertebrate islet1-expressing spinal motor neurons and Rohon-Beard sensory neurons appear to be absent. (C) 2000 Academic Press.
Date: 2016-02-25
Creator: B. Zorina Khan
Access: Open access
- The French economy has been criticized for a lack of integration of women in business and for the prevalence of inefficient family firms. A sample drawn from patent and exhibition records is used to examine the role of women in enterprise and invention in France. Middle-class women were extensively engaged in entrepreneurship and innovation, and the empirical analysis indicates that their commercial efforts were significantly enhanced by association with family firms. Such formerly invisible achievements suggest a more productive role for family-based enterprises, as a means of incorporating relatively disadvantaged groups into the market economy as managers and entrepreneurs. This business model .... melds entrepreneurial passion with a long family tradition. - Wendel Company (1704-2014) 1
Date: 1996-01-01
Creator: Justin G. Schuetz
Access: Open access
- Accompanies an exhibition held at the Bowdoin College Museum of Art from April 17 through June 2, 1996. "This brochure is published with funding from the Andrew W. Mellon Foundation."--Colophon
Date: 2013-10-28
Creator: Yao Tang, Yoshinori Kurokawa, Jiaren Pang
Access: Open access
- We construct a dynamic Ricardian model of trade with money and nominal exchange rate. The model implies that the nominal wages of the trading countries are more likely to exhibit stronger positive comovements when the countries fix their bilateral exchange rates. Panel regression results based on data from OECD countries from 1973 to 2012 suggest that countries in the European Monetary Union (EMU) experienced stronger positive wage comovements with their main trade partners. When we restrict the regression to the subsample of the EMU countries, we find a significant increase in wage comovements after these countries joined the EMU in 1999 compared to the pre-euro era. In comparison, when the sample is restricted to the non-EMU countries, we find no evidence that non-currency union pegs affected the wage comovements.
Date: 2014-01-01
Creator: Anja Forche
Access: Open access
- Pathogenic fungi encounter many different host environments to which they must adapt rapidly to ensure growth and survival. They also must be able to cope with alterations in established niches during long-term persistence in the host. Many eukaryotic pathogens have evolved a highly plastic genome, and large-scale chromosomal changes including aneuploidy, and loss of heterozygosity (LOH) can arise under various in vitro and in vivo stresses. Both aneuploidy and LOH can arise quickly during a single cell cycle, and it is hypothesized that they provide a rapid, albeit imprecise, solution to adaptation to stress until better and more refined solutions can be acquired by the organism. While LOH, with the extreme case of haploidization in Candida albicans, can purge the genome from recessive lethal alleles and/or generate recombinant progeny with increased fitness, aneuploidy, in the absence or rarity of meiosis, can serve as a non-Mendelian mechanism for generating genomic variation. © Springer Science+Business Media 2014.
Date: 2017-01-01
Creator: Emilie Dassié, Kristine Delong, Hali Kilbourne, Branwen Williams, Nerilie, Abram, Logan Brenner, Chloé Brahmi, Kim M. Cobb, Thierry Corrège, Delphine Dissard, Julien Emile-Geay, Heitor Evangelista, Michael N. Evans, Jesse Farmer, Thomas Felis, Michael Gagan, David P. Gillikin, Nathalie Goodkin, Myriam Khodri, Ana Carolina Lavagnino, Michèle Lavigne, Claire Lazareth, Braddock Linsley, Janice Lough, Helen McGregor, Intan S. Nurhati, Gilman Ouellette, Laura Perrin, Maureen Raymo, Brad Rosenheim, Michael Sandstrom, Bernd R. Schöne
Access: Open access
Date: 2021-01-01
Creator: Anonymous
Access: Open access
- This is a response to the Documenting Bowdoin & COVID-19 Reflections Questionnaire. The questionnaire was created in March 2021 by staff of Bowdoin's George J. Mitchell Department of Special Collections & Archives. Author is class of 2024.