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Pages
- Title
- Mixing properties in human behavioral style and time dependencies in behavior identification: The modeling and application of a universal dynamical law.
- Creator
- Selz, Karen A., Florida Atlantic University, Vallacher, Robin R.
- Abstract/Description
-
Human subjects perform simple, relatively unconstrained, game-like computer tasks. "Meso-level" measures of behavioral complexity and time-dependencies (including entropies, grammatical complexity estimates and run statistics) are derived and computed. Individual behavioral differences in the resulting complexity measures are robust and, in a temporal-forcing paradigm, are statistically significantly related to the same individual's scores on a range of personality and demographic variables....
Show moreHuman subjects perform simple, relatively unconstrained, game-like computer tasks. "Meso-level" measures of behavioral complexity and time-dependencies (including entropies, grammatical complexity estimates and run statistics) are derived and computed. Individual behavioral differences in the resulting complexity measures are robust and, in a temporal-forcing paradigm, are statistically significantly related to the same individual's scores on a range of personality and demographic variables. Through an experimental manipulation and the statistical selection of maximally useful predictor sets personality and demographic variables are united in a "macro-level" temperament typology, based on "micro-level" behavioral tendencies. Further, I can compute a parameter value of a one dimensional dynamical system, the symmetric tent map, matched to the symbol sequence "meso-level" parities of the subject. When this parameter is used in the iterated map, it produces sequences that are of the same autocorrelation "category" and share much of the fine structure of the autocorrelograms of the subjects to which the map parameter had been matched.
Show less - Date Issued
- 1992
- PURL
- http://purl.flvc.org/fcla/dt/12306
- Subject Headings
- Rape victims, Attribution (Social psychology)
- Format
- Document (PDF)
- Title
- Migratory Behavior of Hatchling Sea Turtles: Evidence for Population-Specific Divergence in the Loggerhead (Caretta caretta L.).
- Creator
- Madrak, Sheila Veronica, Salmon, Michael, Florida Atlantic University
- Abstract/Description
-
Migratory bird and insect populations show differences in orientation direction, timing, and distances moved depending upon where they reside in relation to their migratory goals. These differences presumably occur because of selection for behavioral responses that promote the most efficient migratory strategies among members of each population. The purpose of this study was to determine whether migratory behavior in loggerhead hatchlings differs between populations that exit nesting beaches...
Show moreMigratory bird and insect populations show differences in orientation direction, timing, and distances moved depending upon where they reside in relation to their migratory goals. These differences presumably occur because of selection for behavioral responses that promote the most efficient migratory strategies among members of each population. The purpose of this study was to determine whether migratory behavior in loggerhead hatchlings differs between populations that exit nesting beaches on the East and West coast of Florida. When the turtles emerge from the nests, they initially show a swimming "frenzy" that serves to distance individuals from shallow coastal waters, displacing them toward oceanic currents that are used to transport the turtles to the North Atlantic Gyre. On the East coast of Florida, turtles swim eastward toward the Florida Current (western portion of the Gulf Stream) located relatively close to the shoreline (on average, 2 km offshore at Miami to 33 km offshore at Melbourne Beach). On the West coast of Florida, turtles swim westward toward the Loop Current in the Gulf of Mexico, which is located farther offshore (150 km offshore at St. Petersburg to over 200 km offshore at the Everglades National Park). In a previous study, we demonstrated that for East coast loggerheads, the frenzy consists of continuous swimming for - 24 h, followed over the next 5 days by postfrenzy (diurnal, with little nocturnal) swimming activity. No comparable data exist that characterize the frenzy period of loggerheads from the West coast ofFlorida. We used identical methods to quantify the migratory activity of hatchlings from the West coast of Florida. Hatchlings were captured as they emerged from nests located between Venice and Sarasota, Florida. They were then tethered in water-filled pools under laboratory conditions, where temperature and photoperiod could be controlled to duplicate conditions used when studying the East coast turtles. Activity was continuously recorded over the next six days. The data were analyzed to determine the proportion of time the turtles spent swimming every day, and the proportion of that swimming activity that occurred during the light and dark period of each day. Turtl~s from each coast showed no statistical difference in the proportion oftime spent swimming each day. However, after day 1, West coast hatchlings showed statistically lower levels of swimming activity during the day and statistically higher levels of swimming activity at night than did turtles from the East coast. We hypothesize that these differences may reflect a more diffuse period of active "searching" for appropriate oceanic currents by the West coast turtles, under conditions where greater predation pressures might select for more movement under conditions of darkness. Such a response may be appropriate when migratory goals are located at greater distances, and when turtles must migrate farther from the coast to reach deeper, and presumably less predator-rich, waters.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000792
- Subject Headings
- Animal migration--Florida, Sea turtles--Migration--Florida, Predation (Biology), Animal orientation--Florida
- Format
- Document (PDF)
- Title
- Microbial community analysis of the octocoral Eunice a fusca; combined use of cultivation-dependent and independent techniques.
- Creator
- Duque-Alarcon, Angela Patricia, Kerr, Russell G., Florida Atlantic University
- Abstract/Description
-
The octocoral Eunicea fusca is the source of important anti-inflammatory compounds such as the diterpenes fuscol and the fuscosides. Evidence suggests that these compounds are being produce by bacterial sources that live in symbiosis with the coral. As part of an investigation to better understand the role of bacteria associated with E. fusca , the characterization of the bacterial community using two different techniques (culture dependent technique and culture independent technique) and sea...
Show moreThe octocoral Eunicea fusca is the source of important anti-inflammatory compounds such as the diterpenes fuscol and the fuscosides. Evidence suggests that these compounds are being produce by bacterial sources that live in symbiosis with the coral. As part of an investigation to better understand the role of bacteria associated with E. fusca , the characterization of the bacterial community using two different techniques (culture dependent technique and culture independent technique) and sea water samples was done. Sea water samples were used as a control to determine how closely associated bacteria are to this octocoral. The polymerase chain reaction (PCR) with universal bacterial primers FC27 and RC 1492 specific to prokaryotic 16S rDNA gene sequences was used to characterize the total bacterial population when using both the culturable and the non-culturable approaches. The results indicate a diverse group of bacteria associated to E. fusca composed of 10 different groups. The pro teo bacteria group was the most predominant group when both techniques were used. The a-proteobacteria represented the highest percentage of bacteria associated to E. fusca.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000748
- Subject Headings
- Diterpenes--Synthesis, Anti-inflammatory agents, Marine pharmacology, Biodiversity
- Format
- Document (PDF)
- Title
- Electronic Spectra of Quadrate Chromium (III) Complexes.
- Creator
- Lowry, Robert K. Jr., Perumareddi, Jayarama R., Florida Atlantic University
- Abstract/Description
-
Ligand field theory of d^3 transition metal ions in cubic and quadrate fields is briefly summarized, along with the features of the predicted spectra. Diffuse reflectance spectra of a variety of quadrate chromium(III) complexes are measured with special emphasis on uncovering the component structures of the spin-forbidden transitions. Energy level assignments are made for components of both spin-allowed and spin-forbidden bands by fitting of the calculated and observed energy levels. Electron...
Show moreLigand field theory of d^3 transition metal ions in cubic and quadrate fields is briefly summarized, along with the features of the predicted spectra. Diffuse reflectance spectra of a variety of quadrate chromium(III) complexes are measured with special emphasis on uncovering the component structures of the spin-forbidden transitions. Energy level assignments are made for components of both spin-allowed and spin-forbidden bands by fitting of the calculated and observed energy levels. Electron correlation and ligand field parameters are derived by the fitting procedure, and the usefulness of the repulsion parameters Band C in bonding considerations is discussed. Results reveal the need for certain refinements of the present state of ligand field theory. The need for improved experimental techniques to provide more precise and abundant spectral data is evident. When more data is available it will be possible to continue the extensions of the theory of ligand fields to s ystems of lower symmetries.
Show less - Date Issued
- 1969
- PURL
- http://purl.flvc.org/fau/fd/FA00000791
- Subject Headings
- Chromium--Spectra, Ligand field theory
- Format
- Document (PDF)
- Title
- Endogenous programs and the development of sea-finding orientation of loggerhead hatchlings (Caretta caretta).
- Creator
- Barrett, Christie A., Florida Atlantic University, Salmon, Michael
- Abstract/Description
-
This study's objective was to determine if the transfer of a crawling direction to a magnetic compass in loggerhead hatchling sea turtles ( Caretta caretta L.) was facilitated by how long the turtle crawled (an "endogenous timing" component). I first determined how long it took hatchlings to crawl from their nest to the ocean. Two types of experiments were then carried out. In the first, crawling time varied. In the second, both crawling time and direction varied. I found that at most beaches...
Show moreThis study's objective was to determine if the transfer of a crawling direction to a magnetic compass in loggerhead hatchling sea turtles ( Caretta caretta L.) was facilitated by how long the turtle crawled (an "endogenous timing" component). I first determined how long it took hatchlings to crawl from their nest to the ocean. Two types of experiments were then carried out. In the first, crawling time varied. In the second, both crawling time and direction varied. I found that at most beaches hatchlings crawled to the ocean in less than 5 min. My experiments showed that if crawls are too short (1 min), or too long (5 min), vector transfer is weakened compared to a 2 min crawl. I also found that a period of non-directional crawling interfered with the ability of a 2 min crawl to promote calibration. These results confirm that efficient transfer of a crawling vector, maintained by visual compass, to a swimming vector, maintained by a magnetic compass, depends upon an endogenous timing program in hatchlings. The temporal properties of that program are, in turn, apparently shaped by where their mothers place nests on the beach.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13175
- Subject Headings
- Animal orientation, Animal navigation, Sea turtles--Orientation, Loggerhead turtle
- Format
- Document (PDF)
- Title
- Epiphyte productivity and community structure in conjunction with HPLC pigment analysis.
- Creator
- Singh, Alya G., Florida Atlantic University, Louda, J. William
- Abstract/Description
-
Seagrass meadows in Florida Bay have rapidly declined due to synergistic stresses. The microalgal communities present on the leaves of Thalssia testudinum were studied in the Snake Bight and Whipray Basin areas of Florida Bay. These areas have been the sites of recurrent phytoplankton blooms and this study was aimed at exploring similar effects within the microalgal epiphytic communities. Epiphytometers, or surrogate seagrass, were used to provide a time zero (T0) point which is impossible in...
Show moreSeagrass meadows in Florida Bay have rapidly declined due to synergistic stresses. The microalgal communities present on the leaves of Thalssia testudinum were studied in the Snake Bight and Whipray Basin areas of Florida Bay. These areas have been the sites of recurrent phytoplankton blooms and this study was aimed at exploring similar effects within the microalgal epiphytic communities. Epiphytometers, or surrogate seagrass, were used to provide a time zero (T0) point which is impossible in natural samples. Epiphyte samples were analyzed using HPLC/PDA which provided measurements of standing crop and community structure (>90% diatom). Epiphytometers were found to be excellent tool for monitoring epiphyte productivity on Thalassia. The monitoring of productivity, standing crop and community structure should allow insight into positive and negative effects of water supply changes.
Show less - Date Issued
- 2003
- PURL
- http://purl.flvc.org/fcla/dt/13066
- Subject Headings
- Epiphytes, High performance liquid chromatography, Seagrasses--Florida--Florida Bay, Thalassia--Florida--Florida Bay
- Format
- Document (PDF)
- Title
- Estimating predation levels and site-specific survival of hatchling loggerhead sea turtles (Caretta caretta) from south Florida beaches.
- Creator
- Whelan, Christie L., Florida Atlantic University, Wyneken, Jeanette
- Abstract/Description
-
Few studies document mortality rates for hatchling sea turtles during their migration away from the nesting beach. This study quantifies and compares nearshore predation rates on loggerhead hatchlings (Caretta caretta) at several locations in southern Florida. Hatchlings were followed by observers in kayaks during the first 15 min of the migration away from the beach. The overall observed predation rate (4.6%) is similar to a previous estimate (5%) from a natural high density Florida nesting...
Show moreFew studies document mortality rates for hatchling sea turtles during their migration away from the nesting beach. This study quantifies and compares nearshore predation rates on loggerhead hatchlings (Caretta caretta) at several locations in southern Florida. Hatchlings were followed by observers in kayaks during the first 15 min of the migration away from the beach. The overall observed predation rate (4.6%) is similar to a previous estimate (5%) from a natural high density Florida nesting beach, and lower than at a hatchery site. Predation rates were higher on Florida's southeast coast than the southwest coast. Predation increased towards the end of the hatching season. Results suggest that currently, hatchling mortality rates are relative low in Florida's shallow nearshore waters. Given the lack of growth by loggerhead populations, the cumulative mortality must be high after hatchlings depart shallow coastal waters.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13259
- Subject Headings
- Sea turtles--Florida--Atlantic Coast, Loggerhead turtle--Mortality, Predation (Biology)
- Format
- Document (PDF)
- Title
- Elucidation of pseudopterosin biosynthesis: Oxidations of erogorgiaene and the intermediacy of seco-pseudopterosins.
- Creator
- Ferns, Tyrone A., Florida Atlantic University, Kerr, Russell G.
- Abstract/Description
-
The pseudopterosins and seco-pseudopterosins are diterpene glycosides isolated from the marine octocoral Pseudopterogorgia elisabethae . These compounds exhibit potent anti-inflammatory and analgesic properties superior to the industrial standard indomethacin. The overall goal of this work was to complete biosynthetic studies for the development of a biotechnological production method of the pseudopterosins and seco-pseudopterosins. The aim of this project was to identify all intermediates...
Show moreThe pseudopterosins and seco-pseudopterosins are diterpene glycosides isolated from the marine octocoral Pseudopterogorgia elisabethae . These compounds exhibit potent anti-inflammatory and analgesic properties superior to the industrial standard indomethacin. The overall goal of this work was to complete biosynthetic studies for the development of a biotechnological production method of the pseudopterosins and seco-pseudopterosins. The aim of this project was to identify all intermediates involved in pseudopterosin biosynthesis. Previously, the Kerr lab has shown that elisabetatriene and erogorgiaene are the first two committed steps in pseudopterosin biosynthesis. In a continuation of those metabolic studies, the isolation and utilization of 7-hydroxyerogorgiaene, 7,8-dihydroxyerogorgiaene, seco-pseudopterosin J, amphilectosins A and B in pseudopterosin biosynthesis is reported. The utilization of these compounds in pseudopterosin biosynthesis was assessed by incubating these compounds in radiolabeled form with viable cell-free extracts of P. elisabethae and monitoring for the incorporation of a radiolabel in the pseudopterosins. We also report the isolation of the pseudopterosin aglycone from extracts of P. elisabethae and identified the aglycone as the end product of this metabolic pathway.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/12164
- Subject Headings
- Marine pharmacology, Aquaculture, Biological products, Natural products, Pharmacognosy
- Format
- Document (PDF)
- Title
- Ethnicity, Education, and Linguistic Effects on Verbal Fluency Tasks in American Elders.
- Creator
- Zoller, Yaron Joseph, Rosselli, Monica, Florida Atlantic University
- Abstract/Description
-
Educational level affects various neuropsychological measures including performance on verbal fluency tasks. It is still unclear how this effect may differ across the different types of fluency tasks (i.e. animals,fruits, vegetables and clothing) and across American ethnic groups (Hispanics, Europeans, Africans, and African Carib beans) using different languages (English and Spanish). Using a sample of 140 normal elder Americans (ages 57 to 88; 38M/ 102F) divided into two education groups (7...
Show moreEducational level affects various neuropsychological measures including performance on verbal fluency tasks. It is still unclear how this effect may differ across the different types of fluency tasks (i.e. animals,fruits, vegetables and clothing) and across American ethnic groups (Hispanics, Europeans, Africans, and African Carib beans) using different languages (English and Spanish). Using a sample of 140 normal elder Americans (ages 57 to 88; 38M/ 102F) divided into two education groups (7-11 and> 12 years of education), results showed strong association with performance for education on the categories fruits and clothing and for ethnicity on the total items generated and number of switches for vegetables. Differences between Spanish and English speakers were found for the fruits category. Results suggest that the animal category is the best one to be used to reduce potential effects of education in individuals with more than 7 years of education.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00000857
- Subject Headings
- Educational tests and measurements, Cognition--Social aspects, Cognition--Age factors, Neuropsychology--Cross-cultural studies, Ethnopsychology--Cross-cultural studies
- Format
- Document (PDF)
- Title
- APPLICATION OF PHOTOACOUSTIC EFFECT WITH OPTICALLY OPAQUE AND THERMALLY THIN SOLIDS: AN OPTICAL POWER METER.
- Creator
- CHENG, KAM-HO., Florida Atlantic University
- Abstract/Description
-
This thesis begins with a general outline of the applications of photoacoustic effects belonging to the more general area of photothermal measurement techniques. Next comes a discussion of the one-dimensional theory that describes the photoacoustic effect. Then it describes the experiments performed using a photoacoustic cell with an adjustable cell length and the conventional front window replaced with an optically opaque and thermally thin disk sample. For the different samples used, most...
Show moreThis thesis begins with a general outline of the applications of photoacoustic effects belonging to the more general area of photothermal measurement techniques. Next comes a discussion of the one-dimensional theory that describes the photoacoustic effect. Then it describes the experiments performed using a photoacoustic cell with an adjustable cell length and the conventional front window replaced with an optically opaque and thermally thin disk sample. For the different samples used, most of the cell response was found to be linear with the laser beam power up to 3.5 watts. Finally, the cell's performance as a power meter is analyzed and recommendations made for future investigations.
Show less - Date Issued
- 1986
- PURL
- http://purl.flvc.org/fcla/dt/14340
- Subject Headings
- Optoacoustic spectroscopy
- Format
- Document (PDF)
- Title
- Computer Simulation of Charged Particle Trajectories.
- Creator
- Hogan, William A., Lamborn, Bjorn, Florida Atlantic University
- Abstract/Description
-
A computer analysis is made of the trajectories of charged particles injected tangentially into the mid-plane of a static mirror field. Conditions necessary for the non-adiabatic transfer of particle energy from the plane perpendicular to the field to the direction parallel to the field are discussed. Two distinct mechanisms are observed: (1) When the requirements for parametric resonance are satisfied, energy is absorbed into longitudinal motion; and (2) When the particle exhibits the...
Show moreA computer analysis is made of the trajectories of charged particles injected tangentially into the mid-plane of a static mirror field. Conditions necessary for the non-adiabatic transfer of particle energy from the plane perpendicular to the field to the direction parallel to the field are discussed. Two distinct mechanisms are observed: (1) When the requirements for parametric resonance are satisfied, energy is absorbed into longitudinal motion; and (2) When the particle exhibits the characteristic looping behavior, energy may be transferred between the longitudinal and transverse degrees of freedom. Various numerical methods are employed to integrate the equations of motion. The fourthorder Runge-Kutta Method is found to be the most accurate.
Show less - Date Issued
- 1970
- PURL
- http://purl.flvc.org/fau/fd/FA00000753
- Subject Headings
- Magnetic fields--Computer programs, Plasma confinement, Equations of motion
- Format
- Document (PDF)
- Title
- Competition between opposing motion directions in the perception of apparent motion: A new look at an old stimulus.
- Creator
- Huisman, Avia, Florida Atlantic University, Hock, Howard S.
- Abstract/Description
-
This study tested the hypothesis that the perception of 2-flash apparent motion (points of light are briefly presented in succession at a nearby locations) is the outcome of competition between two opposing motion directions activated by the stimulus. Experiment 1 replicated previous results obtained using 2-flash stimuli; motion was optimal for a non-zero inter-frame interval (Kolers, 1972; Wertheimer, 1912). In Experiment 2, stimuli were pared down to a single luminance change toward the...
Show moreThis study tested the hypothesis that the perception of 2-flash apparent motion (points of light are briefly presented in succession at a nearby locations) is the outcome of competition between two opposing motion directions activated by the stimulus. Experiment 1 replicated previous results obtained using 2-flash stimuli; motion was optimal for a non-zero inter-frame interval (Kolers, 1972; Wertheimer, 1912). In Experiment 2, stimuli were pared down to a single luminance change toward the background at one location, and a single luminance change away from the background at one location at another. Results were consistent with apparent motion being specified by the counter-changing luminance; motion was optimal for a non-zero inter-frame interval. A subtractive model based on counter-change stimulating opposing motion directions did not account for the results of the 2-flash experiment. An alternative model based on the combined transient responses of biphasic detectors is discussed.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13209
- Subject Headings
- Contrast sensitivity (Vision), Visual perception, Motion perception (Vision), Movement, Psychology of
- Format
- Document (PDF)
- Title
- Contingent suppression of amphetamine-induced stereotypy in cannula-fed rats.
- Creator
- Wade, John Vincent, Florida Atlantic University, Wolgin, David L.
- Abstract/Description
-
An experiment was conducted to examine whether cannula-fed rats could learn to suppress amphetamine-induced head movements when milk infusion was contingent upon suppression of these stereotyped movements. To test this hypothesis, rats in two cannula-fed conditions, Cannula/No Lick and Cannula/Lick, received injections of amphetamine (2.0 mg/kg) for 42 consecutive days. Pilot data had suggested that suppression of these movements was unlikely to occur unless some other stereotyped behavior (e...
Show moreAn experiment was conducted to examine whether cannula-fed rats could learn to suppress amphetamine-induced head movements when milk infusion was contingent upon suppression of these stereotyped movements. To test this hypothesis, rats in two cannula-fed conditions, Cannula/No Lick and Cannula/Lick, received injections of amphetamine (2.0 mg/kg) for 42 consecutive days. Pilot data had suggested that suppression of these movements was unlikely to occur unless some other stereotyped behavior (e.g., licking) could be made, hence the availability of a drinking tube in one of the conditions. Although neither group recovered to baseline intake levels, milk intakes measured over 6 consecutive weeks revealed that both groups had recovered from the initial hypophagic effect of amphetamine and had learned to suppress stereotyped head movements in order to receive milk infusion. There was no significant difference between the intakes of the two groups. These findings suggest that instrumental learning may be an appropriate model to describe the development of tolerance to amphetamine-induced stereotyped movements. They also imply that the channeling of one form of stereotyped head movement (e.g., head scanning) into another form (e.g., licking) is not necessary for tolerance to occur.
Show less - Date Issued
- 1993
- PURL
- http://purl.flvc.org/fcla/dt/14932
- Subject Headings
- Rats as laboratory animals, Stereotypes (Social psychology), Conditioned response, Reinforcement (Psychology)
- Format
- Document (PDF)
- Title
- Contingent suppression of tolerance to the "anorexigenic" effect of haloperidol.
- Creator
- Thompson, Garrie Burton, III, Florida Atlantic University
- Abstract/Description
-
Two experiments were performed to determine whether tolerance to the "anorexigenic" effect of haloperidol is contingent on access to food in the drugged state. In the first experiment groups of rats were given injections of haloperidol (2.5 or 5 mg/kg) either before or after a 30-min drinking session for 53 days. Control groups were given saline injections. On Day 54 all groups were given the drug before milk access to determine the level of tolerance. Rats which had received the drug after...
Show moreTwo experiments were performed to determine whether tolerance to the "anorexigenic" effect of haloperidol is contingent on access to food in the drugged state. In the first experiment groups of rats were given injections of haloperidol (2.5 or 5 mg/kg) either before or after a 30-min drinking session for 53 days. Control groups were given saline injections. On Day 54 all groups were given the drug before milk access to determine the level of tolerance. Rats which had received the drug after milk were found to be more tolerant than rats given the drug chronically before milk on Day 54. In the second experiment the length of drug administration was shortened to 14 days. Findings suggested that rats which received chronic post-test injections of haloperidol continued to develop tolerance with repeated injections of the drug, while the development of such tolerance was suppressed after Day 15 in rats given repeated pre-test injections of the drug. (Abstract shortened with permission of author.)
Show less - Date Issued
- 1987
- PURL
- http://purl.flvc.org/fcla/dt/14425
- Subject Headings
- Drug tolerance, Neuropsychopharmacology
- Format
- Document (PDF)
- Title
- Contexts and circumstances of filicide-suicide.
- Creator
- Beasley, Shanna L., Florida Atlantic University, Shackelford, Todd K.
- Abstract/Description
-
The contexts and circumstances surrounding filicide-suicide may provide insight into parental psychology. The current studies used two Chicago homicide databases containing incident-level information on homicides committed in Chicago during the years 1965-1994 and 1870-1930. Results provide support for the following hypotheses: (1) genetic parents relative to stepparents are more likely to commit suicide following filicide, (2) filicides of multiple victims are more likely to end in the...
Show moreThe contexts and circumstances surrounding filicide-suicide may provide insight into parental psychology. The current studies used two Chicago homicide databases containing incident-level information on homicides committed in Chicago during the years 1965-1994 and 1870-1930. Results provide support for the following hypotheses: (1) genetic parents relative to stepparents are more likely to commit suicide following filicide, (2) filicides of multiple victims are more likely to end in the offender's suicide than are filicides of a single victim, (3) parents are more likely to commit suicide following a filicide of an older child than a younger child, (4) older parents, relative to younger parents, are more likely to commit suicide following filicide, and (5) fathers, relative to mother, are more likely to commit suicide following filicide. Discussion situates results of the current research within existing literature on filicide-suicide, and highlights important directions for future work on the contexts and circumstances surrounding filicide-suicide.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13314
- Subject Headings
- Filicide, Suicide, Children--Crimes against, Family violence
- Format
- Document (PDF)
- Title
- DERIVATIONS AND DIFFERENTIALS.
- Creator
- BASTIDA, VICKI C., Florida Atlantic University, Bastida, Julio R.
- Abstract/Description
-
In this thesis we present a detailed study of the foundations of the general theory of derivations and differentials for commutative algebras over commutative rings. We give a direct and natural proof of the existence of the module of differentials, and then discuss some of its basic properties. A considerable part of the work is devoted to the establishing of the two fundamental exact sequences.
- Date Issued
- 1971
- PURL
- http://purl.flvc.org/fcla/dt/13447
- Subject Headings
- Algebra, Abstract
- Format
- Document (PDF)
- Title
- THE DEVELOPMENT OF SEX DIFFERENCES IN DISTRIBUTIVE JUSTICE (EQUITY, EQUALITY, FAIRNESS, REWARD ALLOCATION).
- Creator
- BOLDIZAR, JANET P., Florida Atlantic University, Perry, David G.
- Abstract/Description
-
This study assessed the perceived fairness of vignette characters who had contributed either more or less than a coworker in a task and had subsequently divided the rewards either equitably or equally. The objective was to explore the development of sex differences in distributive justice between preadolescence and adulthood in light of two competing explanations of those differences. The "normative" explanation states that males and females vary in their respective preferences for the norms...
Show moreThis study assessed the perceived fairness of vignette characters who had contributed either more or less than a coworker in a task and had subsequently divided the rewards either equitably or equally. The objective was to explore the development of sex differences in distributive justice between preadolescence and adulthood in light of two competing explanations of those differences. The "normative" explanation states that males and females vary in their respective preferences for the norms of equity and equality. The "motivational" explanation states that the sexes vary their norm preference according to self-favoring (males) or generous (females) motives . Results provided no support for the former explanation, but support in the fifth grade and college groups for the latter explanation. The eighth grade group was unique in that those males rated generous allocations more fair than the females did. A developmental pattern of cognitive changes in sex-role concepts was suggested.
Show less - Date Issued
- 1986
- PURL
- http://purl.flvc.org/fcla/dt/14298
- Subject Headings
- Sex differences, Distributive justice
- Format
- Document (PDF)
- Title
- DEVELOPMENTAL DIFFERENCES IN ORGANIZATIONAL CRITERIA IN FREE RECALL.
- Creator
- DE MARCHENA, MELANIE RUTH RABIN., Florida Atlantic University
- Abstract/Description
-
This experiment explored the possibility of a developmental shift from organization according to associative criteria to organization according to taxonomic criteria. First, fourth and seventh graders were presented with a list of items which could be organized equally well into either groups of taxonomic or associative pairs. Children were randomly assigned to either the Sort or No Sort Condition. While clustering levels for children in the Sort Condition were significantly greater than...
Show moreThis experiment explored the possibility of a developmental shift from organization according to associative criteria to organization according to taxonomic criteria. First, fourth and seventh graders were presented with a list of items which could be organized equally well into either groups of taxonomic or associative pairs. Children were randomly assigned to either the Sort or No Sort Condition. While clustering levels for children in the Sort Condition were significantly greater than those of children in the No Sort Condition both had high overall levels of clustering. First grade children's organizational styles during sorting, were significantly more associative than were fourth or seventh graders, who increasingly organized taxonomically. These results suggest that it is not that young children are incapable of using effective organizational strategies to mediate recall, but rather, that their strategies differ from those of older children and adults.
Show less - Date Issued
- 1981
- PURL
- http://purl.flvc.org/fcla/dt/14092
- Subject Headings
- Memory in children, Recollection (Psychology)
- Format
- Document (PDF)
- Title
- Community representation in the planning process and its impact on the landscape: A study of the South Dade U.S. 1 Corridor Project.
- Creator
- Schneider, Martin A., Florida Atlantic University, Domosh, Mona
- Abstract/Description
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This thesis looks at how political decisions influence the design and outcome of planning processes and how these decisions influence the urban landscape. This study looks at one specific planning process and compares the results of two different planning workshops to show how differences in representation and information dissemination can lead to different outcomes. The first workshop had broad representation and was educated by planning experts, while the second consisted of only local...
Show moreThis thesis looks at how political decisions influence the design and outcome of planning processes and how these decisions influence the urban landscape. This study looks at one specific planning process and compares the results of two different planning workshops to show how differences in representation and information dissemination can lead to different outcomes. The first workshop had broad representation and was educated by planning experts, while the second consisted of only local community representatives and was not influenced by planning professionals. Although similar, each workshop had different visions and different priorities. This shows that participatory processes have to be carefully constructed to empower communities. It also shows that decisions made in the way planning processes are structured can lead to differences in the landscape.
Show less - Date Issued
- 1997
- PURL
- http://purl.flvc.org/fcla/dt/15513
- Subject Headings
- Planning--Methodology, City planning--Citizen participation, City planning, South Dade U S 1 Corridor (Project)
- Format
- Document (PDF)
- Title
- Comparison of hypothalamic-pituitary-adrenal responses to maternal deprivation and chronic variable stress in pre-weanling rats.
- Creator
- Blandino, Peter, Jr., Florida Atlantic University, Terry, Leslie M.
- Abstract/Description
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This paradigm evaluated a novel chronic stressor paradigm that could be as effective as 24 hr of maternal deprivation (24-MD), yet be intrinsically capable of examination over numerous days in pre-weanling pups. It was hypothesized that a 19 hr chronic variable stressor paradigm (19-CVS) would be equally or more effective in eliciting a corticosterone (CORT) response than 24-MD and that 19-CVS would have elevated recovery CORT levels over 24-MD. The results indicated that (1) 19-CVS elicited...
Show moreThis paradigm evaluated a novel chronic stressor paradigm that could be as effective as 24 hr of maternal deprivation (24-MD), yet be intrinsically capable of examination over numerous days in pre-weanling pups. It was hypothesized that a 19 hr chronic variable stressor paradigm (19-CVS) would be equally or more effective in eliciting a corticosterone (CORT) response than 24-MD and that 19-CVS would have elevated recovery CORT levels over 24-MD. The results indicated that (1) 19-CVS elicited a significantly greater CORT response than 24-MD immediately after stressor exposure and (2) 19-CVS had significantly elevated recovery CORT in comparison to 24-MD. These results demonstrate that 19-CVS early in development is capable of robustly activating the hypothalamic-pituitary-adrenal (HPA)-axis immediately after exposure and may prove useful as an early life stressor. However, additional work is necessary to clarify how these two distinct stressors differ in termination of their respective HPA response.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13302
- Subject Headings
- Hypothalamic-pituitary-adrenal axis, Rats as laboratory animals, Neuropharmacology, Maternal deprivation
- Format
- Document (PDF)