1,002 research outputs found

    Circuits and circuit testing for spaceborne redundant digital systems Special technical report no. 3

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    Design and testing of majority logic redundancy for spaceborne and GSE digital system

    The Impact of the Capital Construction Fund on the Rhode Island Commercial Fishing Industry

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    The impact of the Capital Construction Fund, a tax deferral program utilized for the construction of fishing vessels, is examined in the context of Rhode Island\u27s fishing industry. It was believed that the Capital Construction Fund contributed to overcapitalization, was an incentive to purchase a vessel, and was mainly used by individuals targeting underutilized species. Indicators of capitalization such as number, size, and ages of vessels owned were gathered from the owners of vessels home-ported in Rhode Island during personal interviews. Response of those that have used the Program were separated from those who have not. A frequency analysis was utilized to determine if there were differences between the two groups regarding indicators of capitalization. Few major differences were found between the two groups. Thus, it was determined that the Capital Construction Fund does not contribute to overcapitalization, is not an incentive to purchase a new vessel, nor is it used predominantly by vessels that target underutilized species, in the Rhode Island fishing industry

    Justifying Leadership: A Social Cognitive Approach to Understanding and Predicting Egotistic and Philanthropic Leadership

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    This study extends the current literature on egotistic and philanthropic leadership by considering the role of social cognition in explaining self-serving versus collective- serving leadership behaviors. Specifically, this study proposed that the overt traits and behaviors that constitute egotistic and philanthropic leadership are surface manifestations of the justification mechanisms (JMs) stemming from uninhibited and inhibited power motives. Thus, the purpose of this study was to identify the JMs that egotistic leaders rely on to enhance the rational appeal of self-serving influence behaviors and the JMs that philanthropic leaders rely on to enhance the rational appeal of collective-serving influence behaviors. Additionally, this study aimed to develop and validate a conditional reasoning test designed to measure these JMs. It was hypothesized that the extent to which individuals’ rely on egotistic justifications mechanisms to rationalize behavior would be positively related to the extent to which they use hard influence tactics and manipulative influence tactics. Furthermore, it was also hypothesized that the extent to which individuals’ use philanthropic justifications mechanisms to rationalize behavior would be positively related to the extent to which they use soft influence tactics and rational persuasion to influence others. Preliminary support was found for the relationship between the egotistic JMs and self-serving influence behaviors and for the relationship between the philanthropic JMs and collective-serving influence behaviors. Thus, the initial validity evidence for using the conditional reasoning methodology in the prediction of egotistic and philanthropic leadership behaviors was promising

    Training Strategies to Improve Muscle Power: Is Olympic-style Weightlifting Relevant?

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    Introduction: This efficacy study investigated the effects of (1) Olympic-style weightlifting (OWL), (2) motorized strength and power training (MSPT), and (3) free weight strength and power training (FSPT) on muscle power. Methods: Thirty-nine young athletes (20±3 yr.; ice hockey, volleyball and badminton) were randomized into the three training groups. All groups participated in 2-3 sessions/week for 8 weeks. The MSPT and FSPT groups trained using squats (two legs and single leg) with high force and high power, while the OWL group trained using clean and snatch exercises. MSPT was conducted as slow-speed isokinetic strength training and isotonic power training with augmented eccentric load, controlled by a computerized robotic engine system. FSPT used free weights. The training volume (sum of repetitions x kg) was similar between all three groups. Vertical jumping capabilities were assessed by countermovement jump (CMJ), squat jump (SJ), drop jump (DJ), and loaded CMJs (10-80 kg). Sprinting capacity was assessed in a 30 m sprint. Secondary variables were squat 1-repetitionmaximum, body composition and quadriceps thickness and architecture. Results: OWL resulted in trivial improvements, and inferior gains compared to FSPT and MSPT for CMJ, SJ, and DJ. MSPT demonstrated small, but robust effects on SJ, DJ and loaded CMJs (3-12%). MSPT was superior to FSPT in improving 30 m sprint performance. FSPT and MSPT, but not OWL, demonstrated increased thickness in the vastus lateralis and rectus femoris (4-7%). Conclusion: MSPT was time-efficient and equally or more effective than FSPT training in improving vertical jumping and sprinting performance. OWL was generally ineffective and inferior to the two other interventions.Training Strategies to Improve Muscle Power: Is Olympic-style Weightlifting Relevant?acceptedVersio

    Risk-shifting Through Issuer Liability and Corporate Monitoring

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    This article explores how issuer liability re-allocates fraud risk and how risk allocation may reduce the incidence of fraud. In the US, the apparent absence of individual liability of officeholders and insufficient monitoring by insurers under-mine the potential deterrent effect of securities litigation. The underlying reasons why both mechanisms remain ineffective are collective action problems under the prevailing dispersed ownership structure, which eliminates the incentives to moni-tor set by issuer liability. This article suggests that issuer liability could potentially have a stronger deterrent effect when it shifts risk to individuals or entities holding a larger financial stake. Thus, it would enlist large shareholders in monitoring in much of Europe. The same risk-shifting effect also has implications for the debate about the relationship between securities litigation and creditor interests. Credi-tors’ claims should not be given precedence over claims of defrauded investors (e.g., because of the capital maintenance principle), since bearing some of the fraud risk will more strongly incentivise large creditors, such as banks, to monitor the firm in jurisdictions where corporate debt is relatively concentrated

    Reading acceleration training changes brain circuitry in children with reading difficulties

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    Introduction: Dyslexia is characterized by slow, inaccurate reading. Previous studies have shown that the Reading Acceleration Program (RAP) improves reading speed and accuracy in children and adults with dyslexia and in typical readers across different orthographies. However, the effect of the RAP on the neural circuitry of reading has not been established. In the current study, we examined the effect of the RAP training on regions of interest in the neural circuitry for reading using a lexical decision task during fMRI in children with reading difficulties and typical readers. Methods: Children (8–12 years old) with reading difficulties and typical readers were studied before and after 4 weeks of training with the RAP in both groups. Results: In addition to improvements in oral and silent contextual reading speed, training-related gains were associated with increased activation of the left hemisphere in both children with reading difficulties and typical readers. However, only children with reading difficulties showed improvements in reading comprehension, which were associated with significant increases in right frontal lobe activation. Conclusions: Our results demonstrate differential effects of the RAP on neural circuits supporting reading in both children with reading difficulties and typical readers and suggest that the intervention may stimulate use of typical neural circuits for reading and engage compensatory pathways to support reading in the developing brain of children with reading difficulties

    Packing and Hausdorff measures of stable trees

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    In this paper we discuss Hausdorff and packing measures of random continuous trees called stable trees. Stable trees form a specific class of L\'evy trees (introduced by Le Gall and Le Jan in 1998) that contains Aldous's continuum random tree (1991) which corresponds to the Brownian case. We provide results for the whole stable trees and for their level sets that are the sets of points situated at a given distance from the root. We first show that there is no exact packing measure for levels sets. We also prove that non-Brownian stable trees and their level sets have no exact Hausdorff measure with regularly varying gauge function, which continues previous results from a joint work with J-F Le Gall (2006).Comment: 40 page

    Eccentric cycling does not improve cycling performance in amateur cyclists

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    Eccentric cycling training induces muscle hypertrophy and increases joint power output in non-athletes. Moreover, eccentric cycling can be considered a movement-specific type of strength training for cyclists, but it is hitherto unknown if eccentric cycling training can improve cycling performance in trained cyclists. Twenty-three male amateur cyclists were randomized to an eccentric or a concentric cycling training group. The eccentric cycling was performed at a low cadence (~40 revolution per minute) and the intensity was controlled by perceived effort (12–17 on the Borgs scale) during 2 min intervals (repeated 5–8 times). The cadence and perceived effort of the concentric group matched those of the eccentric group. Additionally, after the eccentric or concentric cycling, both groups performed traditionally aerobic intervals with freely chosen cadence in the same session (4–5 x 4–15 min). The participants trained twice a week for 10 weeks. Maximal oxygen uptake (VO2max), maximal aerobic power output (Wmax), lactate threshold, isokinetic strength, muscle thickness, pedaling characteristics and cycling performance (6- and 30-sec sprints and a 20-min time trial test) were assessed before and after the intervention period. Inferences about the true value of the effects were evaluated using probabilistic magnitude-based inferences. Eccentric cycling induced muscle hypertrophy (2.3 ± 2.5% more than concentric) and augmented eccentric strength (8.8 ± 5.9% more than concentric), but these small magnitude effects seemed not to transfer into improvements in the physiological assessments or cycling performance. On the contrary, the eccentric training appeared to have limiting or detrimental effects on cycling performance, measured as Wmax and a 20-min time trial. In conclusion, eccentric cycling training did not improve cycling performance in amateur cyclists. Further research is required to ascertain whether the present findings reflect an actual lack of efficacy, negative effects or a delayed response to eccentric cycling training.publishedVersio
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