177 research outputs found
The Relationship Between Bipolar Disorder and Epilepsy: Challenging the Dichotomy of Mental and Physical Health
Abstract
The body of literature associating epilepsy with mood disorders is vast and can be traced as far back as Hippocrates. The comorbidity of the two is notoriously high. The prevalence of depressive symptoms among people with epilepsy has been widely reported for decades, though these symptoms may not be considered or treated as successfully in people with epilepsy as they are in their non-epileptic counterparts. More recently, evidence has been found suggesting that psychiatric symptoms may serve as a precursor to epilepsy. The episodic nature of the illnesses and their congruent model of progression suggest a possible connection. The goal of this literature review is to present evidence of the relationship between the two disorders. Similarities in pathophysiology, structural changes associated with the conditions, and biochemical abnormalities link these two disorders and challenge the distinction between âpsychologicalâ and âneurologicâ illness.
Keywords: bipolar disorder, epilepsy, depression, comorbidity, catamenial epilepsy, antidepressants, anticonvulsant
Crop Monitoring in Australia Using Digital Analysis of Landsat Data
This paper describes on-going co-operative research by the New South Wales (N.S.W.) Department of Agriculture and IBM Australia Limited. The aims of the project are to investigate if Landsat digital data can be used to map and monitor agricultural resources, particularly crop acreages and production, over large areas.
From the outset, multi-temporal whole scene computation has been a feature of the technical approach. Software modifications for large data volumes were carried out allowing supervised maximum likelihood classification to be used throughout the work. Considerable amounts of agronomic ground truth have been collected over wide latitudes for use in training the computer system as well as for accuracy assessment of classification results.
A number of Landsat scenes have been studied, with three to five acquisitions being registered for each. Preliminary analyses were conducted on historical data of Tamworth (N.S.W.) and Narrabri (N.S.W.) scenes. More intensive studies were undertaken for the 1980-81 wheat season in the Narrabri scene and are currently being undertaken in the Horsham (Victoria) scene. The techniques used and results from these analyses are discussed in this paper. Classification accuracy has been very encouraging showing excellent potential for use in crop area and production estimates.
Various problems emerged which required special attention and these are discussed. They included loss of data because of cloud cover, registration accuracy, training techniques, best combinations of bands and dates for classification, confusion classes, computation of very large volumes of data and classification accuracy assessment.
This work is demonstrating valuable applications of Landsat data in Australia. Technology transfer to other users is under way and it is anticipated that further technological development will lead to large scale adoption of remote sensing techniques for monitoring agricultural resources in Australia
An Application of Large Scale Computing Facilities to the Processing of LANDSAT Digital Data in Australia
An early issue in the Australian Wide Scale Wheat Monitoring Project, started in November, 1978, was whether to use area sampling, as in the LACIE, or to be innovative and attempt whole scene processing. The availability of a large computing system and acknowledgment of the trends in price and performance of computers influenced a decision towards whole scene processing.
The computing facilities used in this project are described.
An interactive facility supported by software called ER-MAN II is installed on an IBM 3033 which simultaneously supports several hundred other interactive users. The pros and cons of using such a shared facility for this type of work are explored.
The use of multi-temporal data has been the essence of the approach in this project. Reasons for its use, and its performance implications are discussed from the computing view point.
Results to date indicate that shared use of a large facility is feasible and effective. In addition, some calculations may not be possible on small CPU\u27s.
While the interactive processing of the combination of multi-temporal LANDSAT data and large areas is not common in Australia now, it is probable that its use will increase as the cost of computing equipment decreases
Building empathy through a design thinking project : a case study with middle secondary schoolboys
Adolescents' empathy is an essential socio-emotional concept that helps mediate friendships and family relationships. Year 10 boys, aged 14-15 years, were invited to participate in a five-day experiential education program (Design Week) based on a social equity challenge using a Design Thinking concept. Students worked in small groups, mentored by experts. Student groups developed innovative solutions to support women who experienced domestic and family violence. As a key outcome, students' empathy measured by the Comprehensive State Empathy Scale increased significantly from a baseline of 63% to 75% at post-test, representing a large effect size (d= 1.06). Six empathy subscale factors were also significantly increased (p= <0.05). The program was feasible and was rated by teachers and students as engaging, relevant to learning, and learning about complex social issues. This paper presents a case study of the Design Week program, shown to be worthy of further testing with secondary school adolescents. © 2021, Western Australian Institute for Educational Research Inc. All rights reserved
Population structure of humpback whales in the western and central South Pacific Ocean as determined by vocal exchange among populations
The study was supported by major grants from the Sea World Research and Rescue Foundation Inc., the Australian Department of the Environment, Water, Heritage and the Arts, and the Winifred Violet Scott Estate to M.J.N. and E.C.G. and from the International Fund for Animal Welfare (IFAW) to the South Pacific Whale Research Consortium (SPWRC).For cetaceans, population structure is traditionally determined by molecular genetics or photographically identified individuals. Acoustic data, however, has provided information on movement and population structure with less effort and cost than traditional methods in an array of taxa. Male humpback whales (Megaptera novaeangliae) produce a continually evolving vocal sexual display, or song, that is similar among all males in a population. The rapid cultural transmission (the transfer of information or behavior between conspecifics through social learning) of different versions of this display between distinct but interconnected populations in the western and central South Pacific region presents a unique way to investigate population structure based on the movement dynamics of a song (acoustic) display. Using 11 years of data, we investigated an acoustically based population structure for the region by comparing stereotyped song sequences among populations and years. We used the Levenshtein distance technique to group previously defined populations into (vocally based) clusters based on the overall similarity of their song display in space and time. We identified the following distinct vocal clusters: western cluster, 1 population off eastern Australia; central cluster, populations around New Caledonia, Tonga, and American Samoa; and eastern region, either a single cluster or 2 clusters, one around the Cook Islands and the other off French Polynesia. These results are consistent with the hypothesis that each breeding aggregation represents a distinct population (each occupied a single, terminal node) in a metapopulation, similar to the current understanding of population structure based on genetic and photo-identification studies. However, the central vocal cluster had higher levels of song-sharing among populations than the other clusters, indicating that levels of vocal connectivity varied within the region. Our results demonstrate the utility and value of using culturally transmitted vocal patterns as a way of defining connectivity to infer population structure. We suggest vocal patterns be incorporated by the International Whaling Commission in conjunction with traditional methods in the assessment of structure.PostprintPeer reviewe
Building empathy through a design thinking project: A case study with middle secondary schoolboys
Adolescents' empathy is an essential socio-emotional concept that helps mediate
friendships and family relationships. Year 10 boys, aged 14-15 years, were invited to
participate in a five-day experiential education program (Design Week) based on a social
equity challenge using a Design Thinking concept. Students worked in small groups,
mentored by experts. Student groups developed innovative solutions to support women
who experienced domestic and family violence. As a key outcome, students' empathy
measured by the Comprehensive State Empathy Scale increased significantly from a
baseline of 63% to 75% at post-test, representing a large effect size (d= 1.06). Six
empathy subscale factors were also significantly increased (p= <0.05). The program was
feasible and was rated by teachers and students as engaging, relevant to learning, and
learning about complex social issues. This paper presents a case study of the Design
Week program, shown to be worthy of further testing with secondary school
adolescents
First record of humpback whale songs in Southern Chile: Analysis of seasonal and diel variation
Male humpback whales (Megaptera novaeangliae) produce complex, patterned songs that are traditionally recorded on their breeding grounds. In this work, we report results from the first continuous acoustic monitoring of a humpback whale feeding ground off southern Chile, Corcovado Gulf. Using an autonomous continuously recording system anchored to the seafloor and an automatic signal detector, we used the units within a song to analyze the temporal distribution and diel patterns of humpback whales. Acoustic recordings were made at the end of the austral summer and autumn of 2012. Songs occurred over the entire 130 d monitoring period, from 1 February to 15 June 2012. The percentage of units detected increased throughout the monitored period with the highest detections in the last recorded month (June), despite recording for fewer days that month. Furthermore, songs were detected during all light regimes studied, but most frequently during darknessPostprint (author's final draft
Information theory analysis of Australian humpback whale song
Songs produced by migrating whales were recorded off the coast of Queensland, Australia, over six consecutive weeks in 2003. Forty-eight independent song sessions were analyzed using information theory techniques. The average length of the songs estimated by correlation analysis was approximately 100 units, with song sessions lasting from 300 to over 3100 units. Song entropy, a measure of structural constraints, was estimated using three different methodologies: (1) the independently identically distributed model, (2) a first-order Markov model, and (3) the nonparametric sliding window match length (SWML) method, as described by Suzuki et al. [(2006). âInformation entropy of humpback whale song,â J. Acoust. Soc. Am. 119, 1849â1866]. The analysis finds that the song sequences of migrating Australian whales are consistent with the hierarchical structure proposed by Payne and McVay [(1971). âSongs of humpback whales,â Science 173, 587â597], and recently supported mathematically by Suzuki et al. (2006) for singers on the Hawaiian breeding grounds. Both the SWML entropy estimates and the song lengths for the Australian singers in 2003 were lower than that reported by Suzuki et al. (2006) for Hawaiian whales in 1976â1978; however, song redundancy did not differ between these two populations separated spatially and temporally. The average total information in the sequence of units in Australian song was approximately 35 bits/song. Aberrant songs (8%) yielded entropies similar to the typical songs
The waters of São Tomé: a calving ground for West African humpback whales?
In the Southern Hemisphere, humpback whales Megaptera novaeangliae feed in Antarctic waters during the austral summer and migrate to their breeding grounds in subtropical and tropical waters during the winter. Historical whaling records suggest that the Archipelago of Sao Tome and Principe, located in the Gulf of Guinea, serves as a possible breeding ground. In order to investigate the temporal occurrence and group composition of humpback whales around Sao Tome Island, annual surveys were conducted during the breeding season between 2002 and 2006. A total of 186 boat-based surveys took place during this period. Data collected during each sighting included geographical positions, group size, group composition and behavioural classifications. Of the 66 groups encountered, mother/calf pairs made up a large proportion (65.15%), followed by solitary individuals (15.15%). Mother/calf pairs were seen in the region into November and resightings of identified animals indicate periods of occupancy that extended over three weeks. Few behaviours typically associated with mating activity were observed. Given the high percentage of mother/calf pairs, sometimes with very young calves, and the low frequency of mating activity, the waters of Sao Tome may primarily serve as a calving and nursing or resting area for humpback whales.Projecto Delfim; Rolas Island Resort; ECOFAC (Conservation et utilisation rationnelle des Ecosystemes Forestiers en Afrique Centrale); Wildlife Conservation Society
Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground
© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Royal Society Open Science 3 (2016): 160616, doi:10.1098/rsos.160616.Assessing the movement patterns and key habitat features of breeding humpback whales is a prerequisite for the conservation management of this philopatric species. To investigate the interactions between humpback whale movements and environmental conditions off Madagascar, we deployed 25 satellite tags in the northeast and southwest coast of Madagascar. For each recorded position, we collated estimates of environmental variables and computed two behavioural metrics: behavioural state of âtransitingâ (consistent/directional) versus âlocalizedâ (variable/non-directional), and active swimming speed (i.e. speed relative to the current). On coastal habitats (i.e. bathymetryâ<â200âm and in adjacent areas), females showed localized behaviour in deep waters (191â±â20âm) and at large distances (14â±â0.6âkm) from shore, suggesting that their breeding habitat extends beyond the shallowest waters available close to the coastline. Males' active swimming speed decreased in shallow waters, but environmental parameters did not influence their likelihood to exhibit localized movements, which was probably dominated by social factors instead. In oceanic habitats, both males and females showed localized behaviours in shallow waters and favoured high chlorophyll-a concentrations. Active swimming speed accounts for a large proportion of observed movement speed; however, breeding humpback whales probably exploit prevailing ocean currents to maximize displacement. This study provides evidence that coastal areas, generally subject to strong human pressure, remain the core habitat of humpback whales off Madagascar. Our results expand the knowledge of humpback whale habitat use in oceanic habitat and response to variability of environmental factors such as oceanic current and chlorophyll level.Funding was provided by Total Foundation to NeuroPSI, and by individuals and foundations to the WCS Ocean Giants Program
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