Effect of Aquathol K Treatments on Activity Patterns of Largemouth Bass in Two Coves of Lake Seminole, Georgia

Thirty largemouth bass ( Micropterus salmoide s Lacepde) were implanted with radio tags in late October 2003 in two coves of Lake Seminole, Georgia, and tracked over a 24-hour period about every 10 days to determine their response to herbicide application. After five weeks of tracking, hydrilla ( Hydrilla verticillata Royle) in each cove was treated in early December 2003 with dipotassium salt of endothall (Aquathol K; 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid) at a rate of 3.5 ppm. Largemouth bass were tracked during application and tracking continued for three months post treatment to assess effects of herbicide treatment on activity patterns. The treatment in Desser Cove successfully reduced hydrilla in approximately half the cove. However, the treatment in Peacock Lake completely eliminated all submersed aquatic vegetation (SAV) by April 2004. Movement and activity centers remained similar between treatment periods in Desser Cove, but increased after treatment in Peacock Lake. Depth occupied by telemetered fish decreased after Aquathol K treatment in both coves. In general, behavior of largemouth bass did not change appreciably during treatment, and only minor changes were observed in the posttreatment period in Peacock Lake, where all SAV was eliminated. Fish showed little attraction to or movement away from treatment areas, and fish migration from either cove was nil after treatment. Application of Aquathol K and subsequent reduction of SAV had little effect on largemouth bass behavior or movement. (PDF has 8 pages.

Population Characteristics of Largemouth Bass Associated with Changes in Abundance of Submersed Aquatic Vegetation in Lake Seminole, Georgia

Population characteristics of largemouth bass ( Micropterus salmoides L.) including growth, body condition (relative weight), survival, and egg production were examined in relation to abundance of submersed aquatic vegetation (SAV) coverage (primarily hydrilla [ Hydrilla verticillata L.f. Royle]) in three embayments of Lake Seminole, GA, and compared to a previous study conducted in 1998. (PDF has 8 pages.

Changes in Behavior, Movement, and Home Ranges of Largemouth Bass Following Large-scale Hydrilla Removal in Lake Seminole, Georgia

About 1,200 ha of hydrilla ( Hydrilla verticillata L.f. Royle) was eliminated in the Spring Creek embayment of Lake Seminole, Georgia, using a drip-delivery application of fluridone (1- methyl-3-phenyl-5-[3-(trifluoromethl) phenyl]-4(1H)-pyridinone) in 2000 and 2001. Two groups of 15 and 20 largemouth bass (Micropterus salmoides Lacepede) were implanted with 400-day radio tags in February 2000 and 2001 to determine changes in movement and behavior before and after hydrilla reduction.(PDF contains 8 pages.

The influence of disparate levels of submersed aquatic vegetation on largemouth bass population characteristics in a Georgia reservoir

Population characteristics of largemouth bass (Micropterous salmoides L.) including growth, body condition (relative weight), size structure, survival, and fecundity were examined in relation to abundance of submersed aquatic vegetation (SAV) coverage (primarily hydrilla Hydrilla verticillata L.f. Royle) in three major embayments of Lake Seminole, Georgia. Relative weight, fecundity, and growth of large-mouth bass in the Spring Creek embayment (76% areal SAV coverage) was considerably less than measured in the Chattahoochee and Flint river arms that contained lower SAV coverages (26% and 32%). It took fish 1.8 years longer to reach 406 mm in Spring Creek compared to the Chattahoochee-Flint arms. Consequently, fish were smaller in Spring Creek than in the Chattahoochee-Flint arms. In addition, due to slower growth rates and lower fecundity-to-body weight relation, we predicted a 47% reduction in total potential ova production in Spring Creek compared to the other two reservoir embayments. The annual survival rate of 3 to 10 year old largemouth bass was higher in Spring Creek (84%) than in the Chattahoochee-Flint arms (72%) and suggested either lower harvest and/or lower accessibility of particularly larger fish to angling in dense vegetation. Contrary to our expectaions, the fit between number-at-age and age in a catch-curve regression was weaker for fish collected in Spring Creek and suggested greater recruitment variability has occurred over time in this highly vegetated embayment. In Lake Seminole, spatial differences in largemouth bass population characterstics were associated with disparate levels of SAV. Our data suggest that a reduction in hydrilla, but maintenance of an intermediate level of SAV in Spring Creek, should improve largermouth bass population in this arm of the reservoir

Dvilypis informacijos apdorojimas: 1-ojo ir 2-ojo tipo procesų atskyrimas

The last decade marks the rapid development of dual process theories of higher cognition (Evans, 2007; Evans & Stanovich, 2013 a; 2013 b), i. e. defining the features of intuitive Type 1 and reflective Type 2 processing were separated from their typical correlates, the consensus regarding the use of terminology was reached, and empirical research stimulated the creation of various models of the dual process of conflict resolution. Nevertheless, there is still little knowledge about the general principles of operation of the intuitive Type 1 and the reflective Type 2 processing. Particularly little attention is directed towards the question of interaction between both kinds of processing and their manifestation in a given information processing cycle. The main reason behind this problem is of methodological nature. To date, there are very few methods that both can address this issue and do it in the ecologically valid manner. The most promising model to deal with the aforementioned problem is process dissociation (Jacoby, 1991; Lindsay & Jacoby, 1994), however its use has been thwarted due to the unfavourable historical circumstances. During the period of 1991/1994–2006, the use of the process dissociation method has no firm theoretical basis, because the main principles of dual process theories (and particularly default-interventionist model) were still under discussion, while during the period of 2007–2015, cognitive psychologists used a less ecologically valid form of process dissociation method, which dubiously presupposes the priority of Type 2 processing, although the default-interventionist model highlights the priority of Type 1 processing. This article examines the possibilities of applying the process dissociation method in the context of contemporary dual process theories of higher cognition. It is concluded that the combination of two methods (process dissociation and counterintuitive tasks) may serve as a promising universal research strategy to analyze and mathematically evaluate the interaction of the intuitive Type 1 and the reflective Type 2 processing. Pastarąjį dešimtmetį sparčiai plėtojama dvilypio informacijos apdorojimo samprata: esminiai intuityvaus (1-ojo tipo procesų) ir racionalaus (2-ojo tipo procesų) informacijos apdorojimo bruožai atskirti nuo nepagrindinių jų savybių, tikslinama terminija, atliekami empiriniai tyrimai ir siūlomi modeliai, vaizduojantys dvilypio informacijos apdorojimo ypatumus. Nepaisant to, vis dar mažai žinoma apie bendruosius intuityvaus ir racionalaus informacijos apdorojimo veikimo principus, konkrečiai – jų tarpusavio sąveiką ir santykinį pasireiškimą atskiruose informacijos apdorojimo cikluose.Straipsnyje nagrinėjamos matematinio dvilypio proceso atskyrimo metodo pritaikymo galimybės šiuolaikinės dvilypio informacijos apdorojimo sampratos kontekste. Pateikiama universali tyrimo strategija (sujungti matematinis dvilypio proceso atskyrimo ir netipiškų sprendimų reikalaujančių užduočių metodai), kuri leidžia tirti ir skaitine išraiška įvertinti intuityvaus ir racionalaus informacijos apdorojimo sąveiką specifinėmis aplinkybėmis

Filosofijos keliu

Perspausdinamas A. Maceinos straipsnis, pirmą kartą publikuotas išeivijos žurnale „Aidai“ 1978–1979 metais filosofo jubiliejaus proga. Aptariamas filosofijos statusas, paties autoriaus kūrybinio gyvenimo kelias, jo santykis su teologija ir religija, dėstoma A. Maceinos filosofijos svarbiausi bruožai. Teigiama, kad teologinis ir filosofinis mąstymas rutuliojasi skirtingomis kryptimis: teologija prasideda atsakymu, o filosofija – klausimu. Aptariama Dievo kenozės idėja: Dievas būtybės plotmėje veikia jos būdu. Kenozė yra vienintelė ir tikroviška Dievo būsena bei veiksena. Autorius savo mąstymo pagrindiniu uždaviniu laiko ne rasti Dievą savyje ir apie jį kaip tokį kalbėti, bet rasti žmogaus santykį su Dievu ir juo remtis. Aptariamos autoriaus filosofijos studijos. Kritikuojama filosofinio metodo galimybė, pažinimo teorija, įvedama filosofijos kaip mokslo ir filosofijos kaip interpretacijos perskyra. Teigiama, kad filosofija yra būtybės kaip kūrinio interpretacija. Transcendencija neprieinama tol, kol būtybė nesuvokiama kaip kūrinys. Aptariami filosofinės kalbos, žodžio, gimtosios kalbos ir mąstymo, tiesos daugialypumo ir kiti klausimai

GPGPU application in fusion science

GPGPUs have firmly earned their reputation in HPC (High Performance Computing) as hardware for massively parallel computation. However their application in fusion science is quite marginal and not considered a mainstream approach to numerical problems. Computation advances have increased immensely over the last decade and continue to accelerate. GPGPU boards were always an alternative and exotic approach to problem solving and scientific programming, which was cultivated only by enthusiasts and specialized programmers. Today it is about 10 years, since the first fully programmable GPUs appeared on the market. And due to exponential growth in processing power over the years GPGPUs are not the alternative choice any more, but they became the main choice for big problem solving. Originally developed for and dominating in fields such as image and media processing, image rendering, video encoding/decoding, image scaling, stereo vision and pattern recognition GPGPUs are also becoming mainstream computation platforms in scientific fields such as signal processing, physics, finance and biology. This PhD contains solutions and approaches to two relevant problems for fusion and plasma science using GPGPU processing. First problem belongs to the realms of plasma and accelerator physics. I will present number of plasma simulations built on a PIC (Particle In Cell) method such as plasma sheath simulation, electron beam simulation, negative ion beam simulation and space charge compensation simulation. Second problem belongs to the realms of tomography and real-time control. I will present number of simulated tomographic plasma reconstructions of Fourier-Bessel type and their analysis all in real-time oriented approach, i.e. GPGPU based implementations are integrated into MARTe environment. MARTe is a framework for real-time application developed at JET (Joint European Torus) and used in several european fusion labs. These two sets of problems represent a complete spectrum of GPGPU operation capabilities. PIC based problems are large complex simulations operated as batch processes, which do not have a time constraint and operate on huge amounts of memory. While tomographic plasma reconstructions are online (realtime) processes, which have a strict latency/time constraints suggested by the time scales of real-time control and operate on relatively small amounts of memory. Such a variety of problems covers a very broad range of disciplines and fields of science: such as plasma physics, NBI (Neutral Beam Injector) physics, tokamak physics, parallel computing, iterative/direct matrix solvers, PIC method, tomography and so on. PhD thesis also includes an extended performance analysis of Nvidia GPU cards considering the applicability to the real-time control and real-time performance. In order to approach the aforementioned problems I as a PhD candidate had to gain knowledge in those relevant fields and build a vast range of practical skills such as: parallel/sequential CPU programming, GPU programming, MARTe programming, MatLab programming, IDL programming and Python programming

Long-Term Adult Population Fluctuations and Distribution of the Spot, Leiostomus xanthurus, in Mississippi

Adult specimens of the spot, Leiostomus xanthurus, were collected from bayou, Mississippi Sound, and barrier island locations along the Gulf Coast of Mississippi from November 1982 to July 1989. The mean total length of all spot sampled in comparable gill net sets was 219 mm (± 14 standard deviation, n=4,338). Ninety-five percent of the spot were collected in the island and sound areas, where the salinity was higher than in the bayous. Catch per unit effort was high at island and sound stations in spring and autumn, with relatively few fish caught during the winter spawning season and summer. The relatively high frequency of spot observed at the island stations in the autumn was probably influenced by spawning migrations, and the high spring values may repesent a combination of two abundant year classes. The two greatest yearly collections, in 1983 and 1986, may have been influenced by sampling conditions or by environmental conditions favorable to survival either during those years or earlier when those fish were postlarvae. The smallest yearly catch occurred in 1985 and may have reflected the harsh weather conditions that year

Teisėjų sprendimų priėmimas: intuityvus ir racionalus informacijos apdorojimas

[full article and abstract in Lithuanian; abstract in English] The contributions of judges’ intuitive and rational information processing making decisions on criminal (robbery) cases were evaluated. Results are interpreted in the context of cognitive psychology and discussed in relation to the contemporary trends and future perspectives in the field of legal decsion-making. Summary The aim of the current study is to investigate the contributions of judges’ intuitive and rational information processing making decisions on criminal (robbery) cases. 98 judges working in various courts of Lithuania‘s general jurisdiction participated in this study. We asked participants to solve two vignettes. One vignette was designed to be compatible with intuitive information processing (i. e., anchor provided at the end of the vignette suggested a correct decision), while another counter-intuitive (i. e., anchor suggested incorrect decision). 51 judges were instructed to solve vignettes intuiti- vely under a limit time (intuitive group), 47 judges – rationally with no time constraints (rational group). Results of the current study revealed that intuitive group decided on higher sentences (i.e. was closer to an anchor), compared to rational group. Additonally, we found that judges’ in rational group rational information processing contributed to 53.19%, and intuitive information processing – to 8,51% of all decision-making process. Moreover, judges’ in intuitive group rational information processing contributed to 35.29%, and intuitive information processing – to 15,68% of all decision-making process. Results are interpreted in the context of cognitive psychology.[straipsnis ir santrauka lietuvių kalba; santrauka anglų kalba] Straipsnyje analizuojamas santykinis teisėjų intuityvaus ir racionalaus informacijos apdorojimo pasireiškimas sprendžiant tariamus baudžiamųjų bylų scenarijus, susijusius su plėšimo nusikaltimais. Gauti rezultatai interpretuojami kognityvios psichologijos kontekste, taip pat aptariamas jų sąlytis su pastarųjų dešimtmečių mokslinės produkcijos tendencijomis ir tolesnėmis perspektyvomis

Long-Term Adult Population Fluctuations and Distribution of the Spot, Leiostomus xanthurus, in Mississippi

Adult specimens of the spot, Leiostomus xanthurus, were collected from bayou, Mississippi Sound, and barrier island locations along the Gulf Coast of Mississippi from November 1982 to July 1989. The mean total length of all spot sampled in comparable gill net sets was 219 mm (± 14 standard deviation, n=4,338). Ninety-five percent of the spot were collected in the island and sound areas, where the salinity was higher than in the bayous. Catch per unit effort was high at island and sound stations in spring and autumn, with relatively few fish caught during the winter spawning season and summer. The relatively high frequency of spot observed at the island stations in the autumn was probably influenced by spawning migrations, and the high spring values may repesent a combination of two abundant year classes. The two greatest yearly collections, in 1983 and 1986, may have been influenced by sampling conditions or by environmental conditions favorable to survival either during those years or earlier when those fish were postlarvae. The smallest yearly catch occurred in 1985 and may have reflected the harsh weather conditions that year