70 research outputs found
Walking on Sunshine: Can Vitamin D and UV-Exposure Explain Opioid Use?
No full textThesis advisor: Donald CoxCan Vitamin D deficiency contribute to opioid use? Though seemingly unrelated substances, the two interestingly mirror each other in effects and metabolism. Vitamin D deficiency can lead to weakness, pain, and depression. Both can interact with addiction receptors in the brain. For these reasons, some evolutionary thinkers argue sunlight, the primary source of Vitamin D, may have emerged as the very first addiction. In this framework, modern opioid use could mirror sun exposure, but without the benefits and regulation which Vitamin D provides. Thus, one's natural Vitamin D levels may be very important to explaining their interactions with opioids. This paper parallels previous medical and epidemiological literature attempting to demonstrate how Vitamin D mediates the strength of opioids. Using 2003--2004 U.S. NHANES prescription use, health, and demographic data for individuals aged 20 to 84, this paper measures the impact of Vitamin D deficiency on the propensity of opioid use. A control function approach is used, leveraging milk consumption to relieve endogeneity concerns in previous studies. Unlike previous findings, we do not observe any significant effect from Vitamin D levels.Thesis (BA) — Boston College, 2024.Submitted to: Boston College. Morrissey School of Arts and Sciences.Discipline: Economics.Discipline: Departmental Honors
'Surrealistic and disturbing': Timothy O’Sullivan as Seen by Ansel Adams in the 1930s
No full textabstract: In 1937, Ansel Adams described the photographs taken some sixty years earlier by Timothy O’Sullivan in the American West as “surrealistic and disturbing.” He was writing to Beaumont Newhall, who was then curating a landmark exhibition celebrating the centenary of photography’s invention.
This paper examines the 1930s as a formative moment in the Modernist history of photography. At this time, Adams and Newhall—influenced also by Alfred Steiglitz and Edward Weston—developed a history for their young medium that emphasized certain practices and approaches. The Western Survey photographs of the 1870s became cornerstones in this history, for they seemed to exemplify a photographic sensibility unencumbered by artistic aspiration.
A tension develops here between the attempt to define and restrict the medium, and the need to explain the strange qualities of these early photographs, leading to the invocation of surrealism. By examining surrealism’s deployment in this context, the paper provides a different angle from which to view the West as subject and surrealism as style in the history of photography
Strategic arms limitation talks II: linkages and geopolitics
No full textStrategic Arms Limitation Talks II between the United States and the Soviet Union were not ratified by the U.S. in the early 1980s. While there are numerous reasons for this, the Soviets' illicit relations and activities in international politics may be viewed as a major cause. The need for strategic nuclear pact had been previously argued for, President Carter then took the initiative to embark on the SALT II negotiations. Both the Soviets and the United States felt threatened by each others nuclear capabilities and the implications for world peace, but SALT became a dead end. The U.S. senators were influenced negatively in voting for SALT. Most felt that like SALT I the treaty was essentially favoring the Soviets. They were convinced that SALT II was unverifiable and that it endangered certain vital interests of the United States. The Soviet invasion of Afghanistan did not help the situation at all. From a geo-political point of view it was necessary to relate events in different parts of the world to the success or failure of the SALT talks. The Middle East, Afghanistan, Central America and the Caribbean became the areas in the contention. Closely related here was the notion of linkage which assumes the role of national interests as a priority factor. Strategic arms control as a major dimension of Soviet-U.S. relations has relevance beyond the disagreement over SALT II. What SALT did was open doors for further dialog and information access on the subject. This thesis contributes a part to this knowledge which relates to U.S.- Soviet disagreement over SALT II
The soft-focus lens and Anglo-American pictorialism
No full textElectronic version excludes illustrations for which permission has not been granted by the rights holderThe history, practice and aesthetic of the soft focus lens in photography is elucidated and developed from its earliest statements of need to the current time with a particular emphasis on its role in the development of the Pictorialist movement. Using William Crawford's concept of photographic 'syntax', the use of the soft focus lens is explored as an example of how technology shapes style.
A detailed study of the soft focus lenses from the earliest forms to the present is presented, enumerating the core properties of pinhole, early experimental and commercial soft focus lenses. This was researched via published texts in period journals, advertising, private correspondence, interviews, and the lenses themselves. The author conducted a wide range of in-studio experiments with both period and contemporary soft focus lenses to evaluate their character and distinct features, as well as to validate source material.
Nodal points of this history and development are explored in the critical debate between the diffuse and sharp photographic image, beginning with the competition between the calotype and daguerreotype. The role of George Davison's The Old Farmstead is presented as well as the invention of the first modern soft focus lens, the Dallmeyer-Bergheim, and its function in the development of the popular Pictorialist lens, the Pinkham & Smith Semi-Achromatic. The trajectory of the soft focus lens is plotted against the Pictorialist movement, noting the correlation betwixt them, and the modern renaissance of soft focus lenses and the diffuse aesthetic.
This thesis presents a unique history of photography modeled around the determining character of technology and the interdependency of syntax, style and art
Immanuel - author s concept of landcape photography
No full textOvaj završni rad obuhvaća čovjekovo shvaćanje okoliša oko sebe, kao i ulogu koju ima te
identitet koji mu je dan. Sve to je prezentirano na autorov vlastiti način koji je potaknut umjetnošću
i medijem fotografije. Inspiriran kroz stil piktorijalizma i „straight“ fotografije te kroz vlastiti
odnos s Bogom autor je iznio svoje shvaćanje, doživljaje i osjećaje krajobraza oko sebe kao i
društva. Velika paralela u svemu je bio i Ansel Adams koji je autoru bio ne samo umjetnička
inspiracija već i filozofska
Immanuel - author s concept of landcape photography
No full textOvaj završni rad obuhvaća čovjekovo shvaćanje okoliša oko sebe, kao i ulogu koju ima te
identitet koji mu je dan. Sve to je prezentirano na autorov vlastiti način koji je potaknut umjetnošću
i medijem fotografije. Inspiriran kroz stil piktorijalizma i „straight“ fotografije te kroz vlastiti
odnos s Bogom autor je iznio svoje shvaćanje, doživljaje i osjećaje krajobraza oko sebe kao i
društva. Velika paralela u svemu je bio i Ansel Adams koji je autoru bio ne samo umjetnička
inspiracija već i filozofska
An experimental inquiry into the proximate cause of death from suspended respiration in drowning and hanging, with the means of resuscitation. : Submitted as an inaugural essay to the public examination of the trustees and professors of the College of Physicians and Surgeons in the University of the State of New-York, Samuel Bard, M.D. president, for the degree of Doctor of Medicine, on the 3d of May, 1814. /
No full textHSL Copy has partially clipped author's inscription on title page.Dedicated to Valentine Mott, M.D. and doctors Bartow White, Elisha North and Erastus L. Hart.Thesis (Doctor of Medicine) -- College of Physicians and Surgeons, 1814.Includes bibliographical references.Austin, R.B. Early Amer. medical imprints,Shaw & ShoemakerMode of access: Internet
Der Essay als Kraftstation. Walter Benjamins „Karl Kraus“
No full textWithin the extensive textual typology of Walter Benjamin's work, the essay acquired pivotal significance. The author portraits - from Hebel to Keller, from Leskov to Proust and Kafka - turn out as attempts to mirror the critic's inner doubts in the persona of another. In particular, Benjamin's renowned 1931 essay on Karl Kraus can be read as his effort to intellectually and ideologically position himself within a crucial transition phase. This tripartite work portrays Karl Kraus first as “universal man” (Allmensch), a tireless defender of the purity of language and the dignity of every single creature; then as “demon” (Dämon), a satirical and violent mime; and finally as “inhuman 1” (Unmensch), an unwitting revolutionary able to overcome both demon and universal man. In order to pinpoint the telos of this revolution, a “power station” (Kraftstation) in needed, as a cryptic note by the author himself suggests. Benjamin's essay, it is argued here, is just such a power station
Stresses in beams, plates, and shells, third edition
No full textNoted for its practical, student-friendly approach to graduate-level mechanics, this volume is considered one of the top references-for students or professioals-on the subject of elasticity and stress in construction. The author presents many examples and applications to review and support several foundational concepts. The more advanced concepts in elasticity and stress are analyzed and introduced gradually, accompanied by even more examples and engineering applications in addition to numerous illustrations.Chapter problems are carefully arranged from the basic to the more challenging. The author covers computer methods, including FEA and computational/equation-solving software, and, in many cases, classical and numerical/computer approaches
Properties of Cement Acid Gels
No full textThis thesis summarizes the research conducted during the period June 1953 - June 1954 under the research fellowship established in the Department of Chemistry at Union College by the North American Cement Corporation. The research was performed under the direction of Professor Charles B. Hurd, to whom the author is indebted for many helpful suggestions and ideas
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