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Pages
- Title
- Family Service Agencies: Responding to Need in the 1980s.
- Creator
- Alperin, Diane, E.
- Date Issued
- 1993-09-01
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1093_sw_38.5.597_1629741376
- Format
- Citation
- Title
- Hybrid probabilistic and convex modeling of excitation and response of periodic structures.
- Creator
- Zhu, L. P., Elishakoff, Isaac
- Abstract/Description
-
In this paper, a periodic finite-span beam subjected to the stochastic acoustic pressure with bounded parameters is investigated. Uncertainty parameters exist in this acoustic excitation due to the deviation or imperfection. First, a finite-span beams subjected to the random acoustic pressure field are studied, the exact analytic forms of the cross-spectral density of both the transverse displacement and the bending moment responses of the structure are formulated. The combined probabilistic...
Show moreIn this paper, a periodic finite-span beam subjected to the stochastic acoustic pressure with bounded parameters is investigated. Uncertainty parameters exist in this acoustic excitation due to the deviation or imperfection. First, a finite-span beams subjected to the random acoustic pressure field are studied, the exact analytic forms of the cross-spectral density of both the transverse displacement and the bending moment responses of the structure are formulated. The combined probabilistic and convex modeling of acoustic excitation appears to be most suitable, since there is an insufficient information available on the acoustic excitation parameters, to justify the totally probabilitic analysis. Specifically, we postulate that the uncertainty parameters in the acoustic loading belong to a bounded, convex set. In the special case when this convex set is an ellipsoid, closed form solutions are obtained for the most and least favorable mean square responses of both the transverse displacement and bending moment of the structure. Several finite-span beams are exemplified to gain insight into proposal methodology.
Show less - Date Issued
- 1996
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000090
- Format
- Citation
- Title
- Antioptimization of earthquake exitation and response.
- Creator
- Zuccaro, G., Elishakoff, Isaac, Baratta, A.
- Abstract/Description
-
The paper presents a novel approach to predict the response of earthquake-excited structures. The earthquake excitation is expanded in terms of series of deterministic functions. The coefficients of the series are represented as a point in N-dimensional space. Each available accelerogram at a certain site is then represented as a point in the above space, modeling the available fragmentary historical data. The minimum volume ellipsoid, containing all points, is constructed. The ellipsoidal...
Show moreThe paper presents a novel approach to predict the response of earthquake-excited structures. The earthquake excitation is expanded in terms of series of deterministic functions. The coefficients of the series are represented as a point in N-dimensional space. Each available accelerogram at a certain site is then represented as a point in the above space, modeling the available fragmentary historical data. The minimum volume ellipsoid, containing all points, is constructed. The ellipsoidal models of uncertainty, pertinent to earthquake excitation, are developed. The maximum response of a structure, subjected to the earthquake excitation, within ellipsoidal modeling of the latter, is determined. This procedure of determining least favorable response was termed in the literature (Elishakoff, 1991) as an antioptimization. It appears that under inherent uncertainty of earthquake excitation, antioptimization analysis is a viable alternative to stochastic approach.
Show less - Date Issued
- 1998
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000014
- Format
- Citation
- Title
- Combination of anti-optimization and fuzzy-set-based analysis for structural optimization under uncertainty.
- Creator
- Fang, Jianjie, Smith, Samuel M., Elishakoff, Isaac
- Abstract/Description
-
An approach to the optimum design of structures, in which uncertainties with a fuzzy nature in the magnitude of the loads are considered, is proposed in this study. The optimization process under fuzzy loads is transformed into a fuzzy optimization problem based on the notion of Wemers' maximizing set by defining membership functions of the objective function and constraints. In this paper, Werner's maximizing set is defined using the results obtained by first conducting an optimization...
Show moreAn approach to the optimum design of structures, in which uncertainties with a fuzzy nature in the magnitude of the loads are considered, is proposed in this study. The optimization process under fuzzy loads is transformed into a fuzzy optimization problem based on the notion of Wemers' maximizing set by defining membership functions of the objective function and constraints. In this paper, Werner's maximizing set is defined using the results obtained by first conducting an optimization through anti-optimization modeling of the uncertain loads. An example of a ten-bar truss is used to illustrate the present optimization process. The results are compared with those yielded by other optimization methods.
Show less - Date Issued
- 1998
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000069
- Format
- Citation
- Title
- Ecological Dominance by Paratrechina longicornis (Hymenoptera: Formicidae), an Invasive Tramp Ant, in Biosphere 2.
- Creator
- Wetterer, James K., Miller, S. E., Wheeler, D. E., Olson, C. A., Polhemus, D. A., Pitts, M., Ashton, I. W., Himler, A. G., Yospin, M. M., Helms, K. R., Harken, E. L., Gallaher, J., Dunning, C. E., Nelson, M., Litsinger, J., Southern, A., Burgess, T. L.
- Date Issued
- 1999-09
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000201
- Format
- Citation
- Title
- The brain decade in debate: VII. Neurobiology of sleep and dreams.
- Creator
- Aloe, F., Amzica, F., Hening, W., Menna-Barreto, L., Pinto Jr., L.R., Velluti, R., Vertes, Robert P., Timo-Iaria, C.
- Date Issued
- 2001-12
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000196
- Format
- Citation
- Title
- ANTS (HYMENOPTERA: FORMICIDAE) OF THE DRY TORTUGAS, THE OUTERMOST FLORIDA KEYS.
- Creator
- Wetterer, James K., O’Hara, Brandon C.
- Date Issued
- 2002-06
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000202
- Format
- Citation
- Title
- Ants (Hymenoptera: Formicidae) on Non-native Neotropical Ant-acacias (Fabales: Fabaceae) in Florida.
- Creator
- Wetterer, James K., Wetterer, Andrea L.
- Date Issued
- 2003-12
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000203
- Format
- Citation
- Title
- Ants (Hymenoptera: Formicidae) of Bermuda.
- Creator
- Wetterer, James K., Wetterer, Andrea L.
- Date Issued
- 2004-06
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000204
- Format
- Citation
- Title
- Association of postfire peat accumulation and microtopography in boreal bogs.
- Creator
- Benscoter, Brian W, Vitt, Dale H, Wieder, R Kelman
- Date Issued
- 2005-09-01
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1139_x05-115_1632245551
- Format
- Citation
- Title
- Measurement of the Doppler shift in forward-scattered waves caused by moderate sea surface motion in shallow waters.
- Creator
- Beaujean, Pierre-Philippe, Strutt, Guenael T.
- Abstract/Description
-
A study of the impulse response of the acoustic channel in shallow waters is presented with respect to space, time, and frequency shift over a time window of two hours. A broadband chirp (42–54 kHz) and a narrow band sine wave (58 kHz) are transmitted from a static source located at 51 and 166 m from a vertical line receiver array. In 20 m of water with 0.4 m of wave height, an average Doppler shift of 20 Hz is measured at 51 m range, and 10 Hz at 166 m range, due to the sea-surface motion.
- Date Issued
- 2005-10
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000001
- Format
- Citation
- Title
- Chimeric peptide nucleic acid compounds modulate splicing of the bcl-x gene in vitro and in vivo.
- Creator
- Wilusz, J. E., Devanney, Sean C., Caputi, Massimo
- Date Issued
- 2005-11-27
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000099
- Format
- Citation
- Title
- RED IMPORTED FIRE ANTS (HYMENOPTERA: FORMICIDAE) AT GOPHER TORTOISE (TESTUDINES: TESTUDINIDAE) BURROWS.
- Creator
- Wetterer, James K., Moore, Jon
- Abstract/Description
-
The gopher tortoise, Gopherus polyphemus Daudin, is endemic to the southeastern US, where its populations are declining primarily due to habitat destruction. Tortoises are preyed upon by many species, including the red imported fire ant, Solenopsis invicta Buren, a destructive exotic species now common throughout the tortoises’ entire range. We surveyed ants using tuna bait at 154 G. polyphemus burrows in a greenway reserve established to protect the tortoises in a residential area of...
Show moreThe gopher tortoise, Gopherus polyphemus Daudin, is endemic to the southeastern US, where its populations are declining primarily due to habitat destruction. Tortoises are preyed upon by many species, including the red imported fire ant, Solenopsis invicta Buren, a destructive exotic species now common throughout the tortoises’ entire range. We surveyed ants using tuna bait at 154 G. polyphemus burrows in a greenway reserve established to protect the tortoises in a residential area of southeast Florida. We found S. invicta present, typically recruiting to the bait in very high numbers, on the aprons of 33% of the tortoise burrows. Solenopsis invicta occurred significantly more often at burrows within 30 m of the greenway’s outer edge than at burrows in more interior parts of the greenway (57% versus 16%). Among the interior burrows, S. invicta occurred significantly more often at burrows directly on two narrow strips of disturbed habitat, along an old fence line and an old pipeline, than at burrows not on these two strips (46% versus 12%). The greenway interior appears to offer tortoises and other species some refuge from S. invicta . However, the long thin design typical of greenways, the inclusion of walking paths through the greenways, and the policies of prescribed burning and reduction mowing used to maintain open habitat for the tortoises all may increase the tortoises’ exposure to S. invicta . Solenopsis invicta is also a grave threat to other native species in these reserves, including the many animals that obligately live inside gopher tortoise burrows.
Show less - Date Issued
- 2005-12
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000058
- Format
- Citation
- Title
- Full-Scale Field Tests on Flexible Pipes under Live Load Application.
- Creator
- Arockiasamy, Madasamy, Chaallal, Omar, Limpeteeprakarn, Terdkiat
- Date Issued
- 2006-02
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1061_(ASCE)0887-3828(2006)20:1(21)_1630610987
- Format
- Citation
- Title
- Separation and HPLC Analysis of Diastereomers and Rotational Isomers of.
- Creator
- Chamely-Wiik, Donna M., Carraher, Charles E., Kamel, George, Haky, Jerome E.
- Date Issued
- 2006-06-10
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1080_10826070600757680_1521555358
- Format
- Citation
- Title
- Periodic standing-wave approximation: Eigenspectral computations for linear gravity and nonlinear toy models.
- Creator
- Beetle, Christopher, Bromley, Benjamin, Price, Richard H.
- Date Issued
- 2006-07-13
- PURL
- http://purl.flvc.org/fau/flvc_fau_islandoraimporter_10.1103_PhysRevD.74.024013_1632234668
- Format
- Citation
- Title
- Stochastic analysis of an ecosystem of two competing species.
- Creator
- Cai, Guo-Qiang, Lin, Y. K.
- Date Issued
- 2006-08
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000098
- Format
- Citation
- Title
- THE RED IMPORTED FIRE ANT, SOLENOPSIS INVICTA, IN THE VIRGIN ISLANDS (HYMENOPTERA: FORMICIDAE).
- Creator
- Wetterer, James K., Snelling, Roy R.
- Abstract/Description
-
The best known and most destructive exotic ant species in the US is the red imported fire ant, Solenopsis invicta Buren. Recently, this species has been reported from several islands in the West Indies, including St. Croix, US Virgin Islands (USVI) and Guana Island, British Virgin Islands (BVI). In the present study, we report new records of S. invicta on St. Croix (13 sites) and the first records of S. invicta from 3 other of the Virgin Islands: St. Thomas, USVI (7 sites), St. John, USVI (2...
Show moreThe best known and most destructive exotic ant species in the US is the red imported fire ant, Solenopsis invicta Buren. Recently, this species has been reported from several islands in the West Indies, including St. Croix, US Virgin Islands (USVI) and Guana Island, British Virgin Islands (BVI). In the present study, we report new records of S. invicta on St. Croix (13 sites) and the first records of S. invicta from 3 other of the Virgin Islands: St. Thomas, USVI (7 sites), St. John, USVI (2 sites), and Tortola, BVI (6 sites). Solenopsis invicta appears to be well established in disturbed open environments on all 4 islands. It is important that people in the Virgin Islands and elsewhere in the West Indies, particularly healthcare professionals, are aware of the presence of S. invicta , can recognize the symptoms of S. invicta stings, and know proper treatments for adverse reactions to the stings, including rare but potentially deadly anaphylactic shock.
Show less - Date Issued
- 2006-12
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000057
- Format
- Citation
- Title
- The Role of Stress Proteins in the Study of Allostatic Overload in Birds: Use and Applicability to Current Studies in Avian Ecology.
- Creator
- Herring, Garth, Gawlik, Dale E.
- Abstract/Description
-
Stress proteins offer a measure of stress in birds at the cellular level that are an alternative to the glucocorticoids. Stress proteins are not biased by handling stress, the increase in stress proteins lasts longer than with other measures (e.g., corticosterone), and, therefore, they may be a more appropriate measure of long-term or chronic stress. However, caution should be practiced when using stress proteins because the level of stress needed to elicit a response may be higher than with...
Show moreStress proteins offer a measure of stress in birds at the cellular level that are an alternative to the glucocorticoids. Stress proteins are not biased by handling stress, the increase in stress proteins lasts longer than with other measures (e.g., corticosterone), and, therefore, they may be a more appropriate measure of long-term or chronic stress. However, caution should be practiced when using stress proteins because the level of stress needed to elicit a response may be higher than with corticosterone. Stress proteins have only recently been used to measure the response to competition, food limitation, growth, and parasitism in birds. In other taxa, the stress proteins have been used to measure genetic stress, temperature, toxins, UV radiation, and physical activity. Stress proteins increase the options available to avian ecologists for understanding how avian species respond to changes in the environment.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000071
- Format
- Citation
- Title
- An Attention-Driven Model for Grouping Similar Images with Image Retrieval Applications.
- Creator
- Marques, Oge, Mayron, Liam M, Borba, Gustavo B, Gamba, Humberto R
- Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FAUIR000171
- Format
- Citation