Post-release survival of hatchery fishes is imperative to the success of any supplemental stocking program. The purpose of this research was to identify differences between hatchery and wild red drum (Sciaenops ocellatus) and determine if pre-release exposure techniques improve survival of hatchery individuals. Objectives were to contrast survival skills of hatchery and wild red drum from different locations, and examine if exposure to natural stimuli (e.g., habitat, predators, live prey) enhances survival skills in naïve hatchery red drum. Laboratory trials using high-speed videography (250 frames per second, fps) and field mesocosm experiments were used to investigate differences in prey-capture (e.g., attack distance, mean attack velocity, capture time, maximum gape, time to maximum gape, gape cycle duration, and foraging behaviors) and anti-predator performance (e.g., reaction distance, response distance, maximum velocity, time to maximum velocity, mean acceleration, and maximum acceleration) of hatchery and wild red drum. Results indicated that anti-predator performance measures differed significantly between hatchery and wild red drum. Variability in prey-capture and anti-predator performance for hatchery and wild red drum was high (CV range: 5.6 – 76.5%), and was greatest for hatchery fish for the majority of performance variables tested. Exposure to habitat (Spartina alterniflora marsh) did not appear to afford any obvious survival benefits to hatchery red drum, although survival skills did vary according to ontogenetic stage. Hatchery red drum exposed to natural predators (pinfish, Lagodon rhomboides) exhibited significantly greater attack distances during feeding events, and anti-predator performance variables were 20 – 300% in these individuals versus naïve red drum. In predation experiments with free-ranging pinfish predators, mortality rates (Z) ranged from 0.047 – 0.060 h-1 · predator-1; however no significant differences in mortality were found between fish reared with and without predators. Hatchery red drum reared on live prey (Artemia franciscana, mysid shrimp) demonstrated enhanced prey-capture and foraging behaviors as well as anti-predator performance relative to fish reared on artificial (pellet) diets. Findings of this research indicate that several behavioral patterns differed between hatchery and wild red drum; however, these differences can be mediated through the use of various pre-release exposure techniques.

The study analyzes the ethical implications of human gene transfer technology for enhancement. Although human gene transfer technology is widely accepted on therapeutic grounds the non-therapeutic use of gene transfer technology remains to be a gray zone for moral deliberation. The present discussion addresses several ethical issues concerning the impacts of human gene transfer technology on individuals, the society, and future people. Accordingly, the study examines major ethical issues concerning the use of human gene transfer technology in general and genetic enhancement in particular, and reliability of the putative demarcation between therapy and enhancement, and further proposes ethical guidelines for non-therapeutic application of human gene transfer technology. A special attention is given to three major ethical issues, such as our obligation to future generations, problems concerning justice, fairness, and equality, and the problem of uncertainty.

Studiens syfte var att undersöka om det sker en social desirability effekt vid självskatting av egenskaper som beskriver manliga och kvinnliga stereotyper när dessa egenskaper framhävs positivt. Studien ämnade ytterligare undersöka om män och kvinnor skiljer sig åt i social desirability. Ett experiment utfördes där försökspersonerna slumpvis fördelades över en kontrollbetingelse och två experimentbetingelser. Den ena experimentbetingelsen tilldelades en kvinnlig manipulation där kvinnliga stereotyper framhävdes positivt medan den andra experimentbetingelsen tilldelades en manlig manipulation där manliga stereotyper framhävdes positivt. Kontrollbetingelsen tilldelades ingen manipulation. Därefter fick försökspersonerna skatta sig själva på påståenden i en enkät som beskrev de könstereotyperna som angivits i de båda manipulationerna. Ingen social desirability effekt uppvisades i resultatet.

With the proliferation of wireless technologies, wireless Internet access in public places will become a necessity in the near future. In outdoor areas, where the base stations are sparsely distributed, mobile users at the edge of the network communicate with the base station at a very low rate and thus waste network resources. To solve this problem, one of the previously taken approaches was the use of relay stations to improve the throughput of the network. In this work, we take this approach to the next level by updating the positions of the relays according to the particular distribution of the users at certain time instants. By comparing the proposed scheme to fixed relay placement strategies, we show that the former has 15-60% performance improvement over the latter, in terms of the average SNR of the network.

Quantitative relationships were established between speech intelligibility and gaze patterns when subjects listened to sentences spoken by a single talker at different auditory SNRs while viewing one or more talkers. When the auditory SNR was reduced and subjects moved their eyes freely, the main gaze strategy involved looking closer to the mouth. The natural tendency to move closer to the mouth was found to be consistent with a gaze strategy that helps subjects improve their speech intelligibility in environments that include multiple talkers. With a single talker and a fixed point of gaze, subjects' speech intelligibility was found to be optimal for fixations that were distributed within 10 degrees of the center of the mouth. Lower performance was observed at larger eccentricities, and this decrease in performance was investigated by mapping the reduced acuity in the peripheral region to various levels of spatial degradation.

“Positive illusions” refer to the tendencies to perceive the self and others positively. The current study proposes that cultural norms regarding positive illusions contribute to cultural differences in well-being. All pairs of participants completed self-reports and informant reports, and served both as perceivers and targets (N = 906 undergraduate students). A novel validated measure of positive illusions and multi-method assessment of well-being were used to examine cultural differences between Asians and Westerners in well-being. Positive illusions were assessed by means of the halo-alpha-beta model of correlations among ratings of participant’s own and an acquaintance’s personality on the Big Five dimensions (Anusic, Schimmack, Pinkus, & Lockwood, 2009). The results suggest that rating biases influence cross-cultural comparisons of well-being and that European and Asian Canadians have similar levels of well-being.

Quantitative relationships were established between speech intelligibility and gaze patterns when subjects listened to sentences spoken by a single talker at different auditory SNRs while viewing one or more talkers. When the auditory SNR was reduced and subjects moved their eyes freely, the main gaze strategy involved looking closer to the mouth. The natural tendency to move closer to the mouth was found to be consistent with a gaze strategy that helps subjects improve their speech intelligibility in environments that include multiple talkers. With a single talker and a fixed point of gaze, subjects' speech intelligibility was found to be optimal for fixations that were distributed within 10 degrees of the center of the mouth. Lower performance was observed at larger eccentricities, and this decrease in performance was investigated by mapping the reduced acuity in the peripheral region to various levels of spatial degradation.

With the proliferation of wireless technologies, wireless Internet access in public places will become a necessity in the near future. In outdoor areas, where the base stations are sparsely distributed, mobile users at the edge of the network communicate with the base station at a very low rate and thus waste network resources. To solve this problem, one of the previously taken approaches was the use of relay stations to improve the throughput of the network. In this work, we take this approach to the next level by updating the positions of the relays according to the particular distribution of the users at certain time instants. By comparing the proposed scheme to fixed relay placement strategies, we show that the former has 15-60% performance improvement over the latter, in terms of the average SNR of the network.

“Positive illusions” refer to the tendencies to perceive the self and others positively. The current study proposes that cultural norms regarding positive illusions contribute to cultural differences in well-being. All pairs of participants completed self-reports and informant reports, and served both as perceivers and targets (N = 906 undergraduate students). A novel validated measure of positive illusions and multi-method assessment of well-being were used to examine cultural differences between Asians and Westerners in well-being. Positive illusions were assessed by means of the halo-alpha-beta model of correlations among ratings of participant’s own and an acquaintance’s personality on the Big Five dimensions (Anusic, Schimmack, Pinkus, & Lockwood, 2009). The results suggest that rating biases influence cross-cultural comparisons of well-being and that European and Asian Canadians have similar levels of well-being.

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