Pfair scheduling of generalized pinwheel task systems

[[abstract]]The scheduling of generalized pinwheel task systems is considered. It is shown that pinwheel scheduling is closely related to the fair scheduling of periodic task systems. This relationship is exploited to obtain new scheduling algorithms for generalized pinwheel task systems. When compared to traditional pinwheel scheduling algorithms, these new algorithms are both more efficient from a run-time complexity point of view, and have a higher density threshold, on a very large subclass of generalized pinwheel task systems.

Effects of Complex-Contrast Versus Traditional Resistance Training on Linear Sprint, Change-of-Direction Speed, Jumps, and Maximal Strength of Physically Active Males

Background: Complex-contrast training (CT) combines traditional resistance training (RT) and ballistic training exercises to induce neuromuscular adaptation. However, adding ballistic exercises with RT exercise in CT format induces superior neuromuscular adaptation compared to performing RT alone, which needs investigation. Objective: This study compared the effects of seven-week CT and RT intervention on selected physical fitness measures among physically active adult males. Methods: A 2 × 2 repeated measures ANOVA design was used to analyse the effects of training intervention on physical fitness measures. Pre- and post-intervention data were collected for 30-m linear sprint time (with split times measured at every 5 m), countermovement jump (CMJ) height, triple hop distance, change-of-direction (COD) time, and one-repetition maximum (1RM) squat. Results: Significant within-group improvements were observed in the 1RM squat (both p0.001), CMJ (CT, p0.001; RT, p=0.003), and 10 m to 30 m linear sprint times (CT, all p0.001; RT, p=0.003-0.011) for both the experimental groups. However, significant within-group improvements for triple-hop distance (p0.001) and 5 m sprint (p=0.008) were observed only in the CT group. A significant deterioration in performance was observed for COD deficit (CT, p=0.020; RT, p=0.019) in both the experimental groups. A significant deterioration in COD total time was observed in the RT group (p=0037). A significant group-by-time interaction was observed only in 5 m linear sprint time (p=0.042), favouring the CT group. Conclusion: Seven weeks of CT and RT improved the 1RM squat, CMJ height, and 10 m, 15 m, 20 m, 25 m, and 30 m linear sprint times. Meanwhile, the triple-hop distance and 5 m sprint time improved only after CT. Lastly, CT improved the 5 m sprint time more effectively than RT

PAN AIR: A computer program for predicting subsonic or supersonic linear potential flows about arbitrary configurations using a higher order panel method. Volume 2: User's manual (version 3.0)

A comprehensive description of user problem definition for the PAN AIR (Panel Aerodynamics) system is given. PAN AIR solves the 3-D linear integral equations of subsonic and supersonic flow. Influence coefficient methods are used which employ source and doublet panels as boundary surfaces. Both analysis and design boundary conditions can be used. This User's Manual describes the information needed to use the PAN AIR system. The structure and organization of PAN AIR are described, including the job control and module execution control languages for execution of the program system. The engineering input data are described, including the mathematical and physical modeling requirements. Version 3.0 strictly applies only to PAN AIR version 3.0. The major revisions include: (1) inputs and guidelines for the new FDP module (which calculates streamlines and offbody points); (2) nine new class 1 and class 2 boundary conditions to cover commonly used modeling practices, in particular the vorticity matching Kutta condition; (3) use of the CRAY solid state Storage Device (SSD); and (4) incorporation of errata and typo's together with additional explanation and guidelines

Towards a more practical model for mixed criticality systems

Abstract-Mixed Criticality Systems (MCSs) have been the focus of considerable study over the last six years. This work has lead to the definition of a standard model that allows processors to be shared efficiently between tasks of different criticality levels. Key aspects of this model are that a system is deemed to execute in one of a small number of criticality modes; initially the system is in the lowest criticality mode, but if any task executes for more than its predefined budget for this criticality level then a mode change is made to a higher criticality mode and all tasks of the lowest criticality level are abandoned (aborted). The initial criticality level is never revisited. This model has been useful in defining key properties of MCSs, but it does not form a useful basis for an actual implementation of a MCS. In this paper we consider the tradeoffs stemming from a consideration of what systems engineers require at run-time and the actual properties of the model that scheduling analysis guarantees. Alternative models are defined that allow low criticality tasks to continue to execute after a criticality mode change. The paper also addresses robust priority assignment

Effect of feeding three different formulated feeds having different protein levels on the growth of angel fish (Pterophyllum scalare) juveniles

Experiment was conducted to study the effect of dietary protein level on growth and nutrient utilization by angel fish (Pterophyllum scalare) juveniles. Fifty-four juveniles (average wt. 2-2.5 g) were equally divided in three treatments with each of three replicates. Three formulated diets with graded protein levels, T1 (35% CP), T2 (40% CP) and T3 (45% CP) were fed to juveniles for 45 days. A trend of higher weight gain %, SGR, FER and PER was found with the increased CP level in the feed. Feed intake was similar in all the groups. T3 group fed with 45% CP registered highest weight gain % (43.26 ± 2.07), SGR (0.78 ± 0.04), FER (0.29 ± 0.01), which were significantly higher (P<0.05) than the T1 and T2 groups. Protein digestibility of T2 and T3 groups was significantly higher than the T1 group. Survival was similar in all the experimental groups. Diet with 45% CP with protein energy ratio of 112.62 mg protein/K cal. is ideal for juvenile angel fish for indoor rearing