158 resultados para now@fiu


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Florida International University's Fall 2013 Map and User Imagery Services Newsletter

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For the past thirty years, policymakers have lauded microfinance for its promises to reduce poverty and empower women in developing nations. First conceived by the Bangladeshi economist Muhammed Yunus and the bank he founded, microfinance has been hailed as a visionary project that promises to advance the economic interests of the poor by engaging them directly. Conventional studies by political scientists explore the place of microfinance in the global development architecture of international financial institutions, governments, and NGOs. Economic studies of its effectiveness are contributing to a crisis of legitimacy since they reveal that thousands of clients in developing nations continue to default on their loans due to predatory lending practices. Drawing on discourse analysis methodology, this article seeks to explain how microfinance, an industry embedded in the financialization of development, is now concerned with high financial returns for investments, not the social goals promised by its original raison d'être. Treating microfinance as a discourse, I argue that there is a fundamental tension between the short-term social goals promised by microfinance and the long-term financial objectives of sustainability of investors.

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Indigenous movements have become increasingly powerful in the last couple of decades and they are now important political actors in some South American countries, such as Bolivia, Ecuador, and, to a lesser extent, Peru and Chile. The rise of indigenous movements has provoked concern among U.S. policymakers and other observers who have feared that these movements will exacerbate ethnic polarization, undermine democracy, and jeopardize U.S. interests in the region. This paper argues that concern over the rise of indigenous movements is greatly exaggerated. It maintains that the rise of indigenous movements has not brought about a market increase in ethnic polarization in the region because most indigenous organizations have been ethnically inclusive and have eschewed violence. Although the indigenous movements have at times demonstrated a lack of regard for democratic institutions and procedures, they have also helped deepen democracy in the Andean region by promoting greater political inclusion and participation and by aggressively combating ethnic discrimination and inequality. Finally, this study suggests that the indigenous population has opposed some U.S. –sponsored initiatives, such as coca eradication and market reform, for legitimate reasons. Such policies have had some negative environmental, cultural, and economic consequences for indigenous people, which U.S. policymakers should try to address. The conclusion provides some specific policy recommendations on how to go about this.

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Sampling and preconcentration techniques play a critical role in headspace analysis in analytical chemistry. My dissertation presents a novel sampling design, capillary microextraction of volatiles (CMV), that improves the preconcentration of volatiles and semivolatiles in a headspace with high throughput, near quantitative analysis, high recovery and unambiguous identification of compounds when coupled to mass spectrometry. The CMV devices use sol-gel polydimethylsiloxane (PDMS) coated microglass fibers as the sampling/preconcentration sorbent when these fibers are stacked into open-ended capillary tubes. The design allows for dynamic headspace sampling by connecting the device to a hand-held vacuum pump. The inexpensive device can be fitted into a thermal desorption probe for thermal desorption of the extracted volatile compounds into a gas chromatography-mass spectrometer (GC-MS). The performance of the CMV devices was compared with two other existing preconcentration techniques, solid phase microextraction (SPME) and planar solid phase microextraction (PSPME). Compared to SPME fibers, the CMV devices have an improved surface area and phase volume of 5000 times and 80 times, respectively. One (1) minute dynamic CMV air sampling resulted in similar performance as a 30 min static extraction using a SPME fiber. The PSPME devices have been fashioned to easily interface with ion mobility spectrometers (IMS) for explosives or drugs detection. The CMV devices are shown to offer dynamic sampling and can now be coupled to COTS GC-MS instruments. Several compound classes representing explosives have been analyzed with minimum breakthrough even after a 60 min. sampling time. The extracted volatile compounds were retained in the CMV devices when preserved in aluminum foils after sampling. Finally, the CMV sampling device were used for several different headspace profiling applications which involved sampling a shipping facility, six illicit drugs, seven military explosives and eighteen different bacteria strains. Successful detection of the target analytes at ng levels of the target signature volatile compounds in these applications suggests that the CMV devices can provide high throughput qualitative and quantitative analysis with high recovery and unambiguous identification of analytes.

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The Digital Commons Annual Report is a document that interested parties may use as a means of monitoring the yearly progress of Florida International University Libraries’ institutional repository. The report includes download and page hit statistics for all collections held in FIU Digital Commons.

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The Digital Commons Annual Report is a document that interested parties may use as a means of monitoring the yearly progress of Florida International University Libraries’ institutional repository. The report includes download and page hit statistics for all collections held in FIU Digital Commons.

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This flyer promotes the presentation of the 2014 Cuba Poll results.

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Movement and habitat use patterns are fundamental components of the behaviors of mobile animals and help determine the scale and types of interactions they have with their environments. These behaviors are especially important to quantify for top predators because they can have strong effects on lower trophic levels as well as the wider ecosystem. Many studies of top predator movement and habitat use focus on general population level trends, which may overlook important intra-population variation in behaviors that now appear to be common. In an effort to better understand the prevalence of intra-population variation in top predator movement behaviors and the potential effects of such variation on ecosystem dynamics, we examined the movement and habitat use patterns of a population of adult American alligators (Alligator mississippiensis) in a subtropical estuary for nearly four years. We found that alligators exhibited divergent behaviors with respect to activity ranges, movement rates, and habitat use, and that individualized behaviors were stable over multiple years. We also found that the variations across the three behavioral metrics were correlated such that consistent behavioral types emerged, specifically more exploratory individuals and more sedentary individuals. Our study demonstrates that top predator populations can be characterized by high degrees of intra-population variation in terms of movement and habitat use behaviors that could lead to individuals filling different ecological roles in the same ecosystem. By extension, one-size-fits-all ecosystem and species-specific conservation and management strategies that do not account for potential intra-population variation in top predator behaviors may not produce the desired outcomes in all cases.

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Shallow marine ecosystems are experiencing significant environmental alterations as a result of changing climate and increasing human activities along coasts. Intensive urbanization of the southeast Florida coast and intensification of climate change over the last few centuries changed the character of coastal ecosystems in the semi-enclosed Biscayne Bay, Florida. In order to develop management policies for the Bay, it is vital to obtain reliable scientific evidence of past ecological conditions. The long-term records of subfossil diatoms obtained from No Name Bank and Featherbed Bank in the Central Biscayne Bay, and from the Card Sound Bank in the neighboring Card Sound, were used to study the magnitude of the environmental change caused by climate variability and water management over the last ~ 600 yr. Analyses of these records revealed that the major shifts in the diatom assemblage structures at No Name Bank occurred in 1956, at Featherbed Bank in 1966, and at Card Sound Bank in 1957. Smaller magnitude shifts were also recorded at Featherbed Bank in 1893, 1942, 1974 and 1983. Most of these changes coincided with severe drought periods that developed during the cold phases of El Niño Southern Oscillation (ENSO), Atlantic Multidecadal Oscillation (AMO) and Pacific Decadal Oscillation (PDO), or when AMO was in warm phase and PDO was in the cold phase. Only the 1983 change coincided with an unusually wet period that developed during the warm phases of ENSO and PDO. Quantitative reconstructions of salinity using the weighted averaging partial least squares (WA-PLS) diatom-based salinity model revealed a gradual increase in salinity at the three coring locations over the last ~ 600 yr, which was primarily caused by continuously rising sea level and in the last several decades also by the reduction of the amount of freshwater inflow from the mainland. Concentration of sediment total nitrogen (TN), total phosphorus (TP) and total organic carbon (TOC) increased in the second half of the 20th century, which coincided with the construction of canals, landfills, marinas and water treatment plants along the western margin of Biscayne Bay. Increased magnitude and rate of the diatom assemblage restructuring in the mid- and late-1900s, suggest that large environmental changes are occurring more rapidly now than in the past.

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The Digital Commons Annual Report is a document that interested parties may use as a means of monitoring the yearly progress of Florida International University Libraries’ institutional repository. The report includes download and page hit statistics for all collections held in FIU Digital Commons.

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Dahlia Morgan with Charles Perry. In the late 1970s, FIU had an enrollment of less than 5,000 and two buildings made up the entire campus. Adjunct professor, at the time, Dahlia Morgan was asked to take over the art museum, which was then called the Visual Arts Gallery. During her long career with Florida International University, Dahlia Morgan transformed a modest student gallery on the Miami campus into an internationally celebrated art museum. In 1980, after teaching for five years in the visual arts department she accepted the directorship of the university’s Patricia & Phillip Frost Art Museum (formerly the Art Museum at FIU). As director and curator, Morgan instituted a lecture series, increased the frequency of exhibitions and developed numerous other programs including a student internship program. The Steven and Dorothea Green Critics’ Lecture Series was started by Morgan in 1981 and has now organized, hosted and presented over 100 lectures by internationally renowned artists, critics and scholars who include Pierre Rosenberg, former Director of the Louvre; Hilton Kramer, Art Critic; Helen Frankenthaler, American artist; and Michael Graves, architect and designer. In 1985 Morgan started the exhibition series “American Art Today,” which featured an annual examination of a specific subject or concept in American Art. Morgan curated and organized over 200 exhibitions during her directorship. Under Morgan, the Frost Art Museum grew to achieve local, national and international recognition as one of South Florida’s key cultural institutions. In 1999 the museum received accreditation from the American Association of Museums and in 2001 became an affiliate of the Smithsonian Institution. With the turn of the 21st Century the initiative to build a new facility took shape and in 2008, the new 46,000 square foot Patricia and Phillip Frost Art Museum opened to the public. Morgan is a four time National Endowment for the Arts Grants Panelist and member of the Art Basel Miami, Host Committee. She is listed in “Who’s Who in American Art” and in “Who’s Who of American Women.” Morgan’s largest accomplishment was seeing the completion of the 45,000 square foot Frost Art Museum built across from the Wertheim Performing Arts Center. Morgan’s fund raising techniques helped her raise over $12 million for its development. For 25 years, Morgan has served as director of FIU’s Frost Art Museum.

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In the late 1970s, FIU had an enrollment of less than 5,000 and two buildings made up the entire campus. Adjunct professor, at the time, Dahlia Morgan was asked to take over the art museum, which was then called the Visual Arts Gallery. During her long career with Florida International University, Dahlia Morgan transformed a modest student gallery on the Miami campus into an internationally celebrated art museum. In 1980, after teaching for five years in the visual arts department she accepted the directorship of the university’s Patricia & Phillip Frost Art Museum (formerly the Art Museum at FIU). As director and curator, Morgan instituted a lecture series, increased the frequency of exhibitions and developed numerous other programs including a student internship program. The Steven and Dorothea Green Critics’ Lecture Series was started by Morgan in 1981 and has now organized, hosted and presented over 100 lectures by internationally renowned artists, critics and scholars who include Pierre Rosenberg, former Director of the Louvre; Hilton Kramer, Art Critic; Helen Frankenthaler, American artist; and Michael Graves, architect and designer. In 1985 Morgan started the exhibition series “American Art Today,” which featured an annual examination of a specific subject or concept in American Art. Morgan curated and organized over 200 exhibitions during her directorship. Under Morgan, the Frost Art Museum grew to achieve local, national and international recognition as one of South Florida’s key cultural institutions. In 1999 the museum received accreditation from the American Association of Museums and in 2001 became an affiliate of the Smithsonian Institution. With the turn of the 21st Century the initiative to build a new facility took shape and in 2008, the new 46,000 square foot Patricia and Phillip Frost Art Museum opened to the public. Morgan is a four time National Endowment for the Arts Grants Panelist and member of the Art Basel Miami, Host Committee. She is listed in “Who’s Who in American Art” and in “Who’s Who of American Women.” Morgan’s largest accomplishment was seeing the completion of the 45,000 square foot Frost Art Museum built across from the Wertheim Performing Arts Center. Morgan’s fund raising techniques helped her raise over $12 million for its development. For 25 years, Morgan has served as director of FIU’s Frost Art Museum.

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In the late 1970s, FIU had an enrollment of less than 5,000 and two buildings made up the entire campus. Adjunct professor, at the time, Dahlia Morgan was asked to take over the art museum, which was then called the Visual Arts Gallery. During her long career with Florida International University, Dahlia Morgan transformed a modest student gallery on the Miami campus into an internationally celebrated art museum. In 1980, after teaching for five years in the visual arts department she accepted the directorship of the university’s Patricia & Phillip Frost Art Museum (formerly the Art Museum at FIU). As director and curator, Morgan instituted a lecture series, increased the frequency of exhibitions and developed numerous other programs including a student internship program. The Steven and Dorothea Green Critics’ Lecture Series was started by Morgan in 1981 and has now organized, hosted and presented over 100 lectures by internationally renowned artists, critics and scholars who include Pierre Rosenberg, former Director of the Louvre; Hilton Kramer, Art Critic; Helen Frankenthaler, American artist; and Michael Graves, architect and designer. In 1985 Morgan started the exhibition series “American Art Today,” which featured an annual examination of a specific subject or concept in American Art. Morgan curated and organized over 200 exhibitions during her directorship. Under Morgan, the Frost Art Museum grew to achieve local, national and international recognition as one of South Florida’s key cultural institutions. In 1999 the museum received accreditation from the American Association of Museums and in 2001 became an affiliate of the Smithsonian Institution. With the turn of the 21st Century the initiative to build a new facility took shape and in 2008, the new 46,000 square foot Patricia and Phillip Frost Art Museum opened to the public. Morgan is a four time National Endowment for the Arts Grants Panelist and member of the Art Basel Miami, Host Committee. She is listed in “Who’s Who in American Art” and in “Who’s Who of American Women.” Morgan’s largest accomplishment was seeing the completion of the 45,000 square foot Frost Art Museum built across from the Wertheim Performing Arts Center. Morgan’s fund raising techniques helped her raise over $12 million for its development. For 25 years, Morgan has served as director of FIU’s Frost Art Museum.

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Charles Edward Perry (Chuck), 1937-1999, was the founding president of Florida International University in Miami, Florida. He grew up in Logan County, West Virginia and received his bachelor's and masters's degrees from Bowling Green State University. He married Betty Laird in 1960. In 1969, at the age of 32, Perry was the youngest president of any university in the nation. The name of the university reflects Perry’s desire for a title that would not limit the scope of the institution and would support his vision of having close ties to Latin America. Perry and a founding corps opened FIU to 5,667 students in 1972 with only one large building housing six different schools. Perry left the office of President of FIU in 1976 when the student body had grown to 10,000 students and the university had six buildings, offered 134 different degrees and was fully accredited. Charles Perry died on August 30, 1999 at his home in Rockwall, Texas. A commemorative plaque on a large coral rock is located in the southeast corner of the Primera Casa building, also called the Charles Perry building, where Perry is now buried.

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Hydrogen has been considered as a potentially efficient and environmentally friendly alternative energy solution. However, one of the most important scientific and technical challenges that the "hydrogen economy" faces is the development of safe and economically viable on-board hydrogen storage for fuel cell applications, especially to the transportation sector. Ammonia borane (BH3NH 3), a solid state hydrogen storage material, possesses exceptionally high hydrogen content (19.6 wt%).However, a fairly high temperature is required to release all the hydrogen atoms, along with the emission of toxic borazine. Recently research interests are focusing on the improvement of H2 discharge from ammonia borane (AB) including lowering the dehydrogenation temperature and enhancing hydrogen release rate using different techniques. Till now the detailed information about the bonding characteristics of AB is not sufficient to understand details about its phases and structures. ^ Elemental substitution of ammonia borane produces metal amidoboranes. Introduction of metal atoms to the ammonia borane structure may alter the bonding characteristics. Lithium amidoborane is synthesized by ball milling of ammonia borane and lithium hydride. High pressure study of molecular crystal provides unique insight into the intermolecular bonding forces and phase stability. During this dissertation, Raman spectroscopic study of lithium amidoborane has been carried out at high pressure in a diamond anvil cell. It has been identified that there is no dihydrogen bond in the lithium amidoborane structure, whereas dihydrogen bond is the characteristic bond of the parent compound ammonia borane. It has also been identified that the B-H bond becomes weaker, whereas B-N and N-H bonds become stronger than those in the parent compound ammonia borane. At high pressure up to 15 GPa, Raman spectroscopic study indicates two phase transformations of lithium amidoborane, whereas synchrotron X-ray diffraction data indicates only one phase transformation of this material. ^ Pressure and temperature has a significant effect on the structural stability of ammonia borane. This dissertation explored the phase transformation behavior of ammonia borane at high pressure and low temperature using in situ Raman spectroscopy. The P-T phase boundary between the tetragonal (I4mm) and orthorhombic (Pmn21) phases of ammonia borane has been determined. The transition has a positive Clapeyron slope which indicates the transition is of exothermic in nature. Influence of nanoconfinemment on the I4mm to Pmn2 1 phase transition of ammonia borane was also investigated. Mesoporus silica scaffolds SBA-15 with pore size of ~8 nm and MCM-41 with pore size of 2.1-2.7 nm, were used to nanoconfine ammonia borane. During cooling down, the I4mm to Pmn21 phase transition was not observed in MCM-41 nanoconfined ammonia borane, whereas the SBA-15 nanocondfined ammonia borane shows the phase transition at ~195 K. Four new phases of ammonia borane were also identified at high pressure up to 15 GPa and low temperature down to 90 K.^