Framework for Simulation of Heterogeneous MpSoC for Design Space Exploration

Due to the ever-growing requirements in high performance data computation, multiprocessor systems have been proposed to solve the bottlenecks in uniprocessor systems. Developing efficient multiprocessor systems requires effective exploration of design choices like application scheduling, mapping, and architecture design. Also, fault tolerance in multiprocessors needs to be addressed. With the advent of nanometer-process technology for chip manufacturing, realization of multiprocessors on SoC (MpSoC) is an active field of research. Developing efficient low power, fault-tolerant task scheduling, and mapping techniques for MpSoCs require optimized algorithms that consider the various scenarios inherent in multiprocessor environments. Therefore there exists a need to develop a simulation framework to explore and evaluate new algorithms on multiprocessor systems. This work proposes a modular framework for the exploration and evaluation of various design algorithms for MpSoC system. This work also proposes new multiprocessor task scheduling and mapping algorithms for MpSoCs. These algorithms are evaluated using the developed simulation framework. The paper also proposes a dynamic fault-tolerant (FT) scheduling and mapping algorithm for robust application processing. The proposed algorithms consider optimizing the power as one of the design constraints. The framework for a heterogeneous multiprocessor simulation was developed using SystemC/C++ language. Various design variations were implemented and evaluated using standard task graphs. Performance evaluation metrics are evaluated and discussed for various design scenarios

Implementation of Large Neural Networks Using Decomposition

The article presents methods of dealing with huge data in the domain of neural networks. The decomposition of neural networks is introduced and its efficiency is proved by the authors’ experiments. The examinations of the effectiveness of argument reduction in the above filed, are presented. Authors indicate, that decomposition is capable of reducing the size and the complexity of the learned data, and thus it makes the learning process faster or, while dealing with large data, possible. According to the authors experiments, in some cases, argument reduction, makes the learning process harder

How Constructivist Learning Impacts Secondary Girls’ STEM Career Interests

This is a quantitative study that examines how constructivist learning in a summer camp impacted middle school and high school girls’ STEM knowledge, self-efficacy, and ultimately, their interests in future STEM learning and growth. An online survey was used to collect information from thirty-one girls at the end of a five-week summer camp. The results are mostly confirmative of past studies that used student-centered project-based authentic STEM learning with significant gains in students’ understanding of STEM, self-efficacy, and interests in STEM for future development. The unique contribution of the study, though, is the finding that, when given the opportunity to engage in active learning and problem-solving, girls’ interest in STEM subjects could be substantially boosted; the constructivist learning environment along with their gains in STEM knowledge can compensate any insufficiency in self-efficacy in this regard. This study provides insight about the importance of instructional approach in STEM education

Crochet: Engaging Secondary School Girls in Art for STEAM’s Sake

Recent STEAM programs have made accomplishments in recruiting K-12 girl students to participate in STEAM activities. Educational researchers have called for studies of how STEM programs engage girls. However, little research has embedded STEM education with girl education such as their emotional needs, identity, and self-expression. This study examined how crochet that was embedded in a STEM summer camp impacted their sense of belonging, creativity, well-being, and STEAM learning. For this qualitative study, surveys were conducted with 37 student participants and Discord was used as part of the data sources. Findings indicated that crocheting enhanced students’ sense of belonging, creativity, well-being, as well as STEM learning. This study contributes to the STEM learning program design for girls in secondary schools with two closely related theories: constructivist learning environment theory and sense of belonging theory. This study added new knowledge to the research of crochet in girl education and STEM program design

Finite-time Sliding Mode and Super-twisting Control of Fighter Aircraft

The development of two nonlinear robust higher-order flight control systems for roll-coupled maneuvers of fighter aircraft with uncertain parameters is discussed in this article. The objective is to independently control the output variables (roll angle, pitch angle and sideslip angle) using aileron, elevator and rudder control surfaces. For a nominal model of aircraft, first a finite time stabilizing (FTS) control law, based on the notion of geometric homogeneity, is designed. Then for robust control in the presence of parameter uncertainties, (i) a discontinuous sliding mode (DSM) control law and (ii) a super-twisting (STW) continuous control law is designed. It is shown that in the composite closed-loop system consisting of either (a) the FTS and DSM control laws or (b) the FTS and STW control systems, the output trajectory tracking error and its first-order derivative converge to the origin in finite time. Digital simulation results for a swept-wing fighter aircraft, including the two composite control systems, are obtained. These results show that each of the designed flight controllers accomplishes precise simultaneous large longitudinal and lateral maneuvers, despite uncertainties in the aerodynamic and inertia parameters, turbulence, and partial loss of control surface effectiveness

Foot Contact Dynamics and Fall Risk Among Children Diagnosed With Idiopathic Toe Walking

Children that are diagnosed with Idiopathic Toe walking (cITW) are characterized by persistent toe-to-toe contacts. The objective of this study was to explore whether typical foot contact dynamics during walking predisposes cITW to a higher risk of falling. Twenty cITW and age-matched controls performed typical and toe walking trials. The gait parameters related to foot contact dynamics, vertical force impulses during stance, slip, and trip risk were compared for both groups. We found that cITW manifest less stable gait and produced significantly higher force impulses during push-off. Additionally, we found that cITW had a higher slip-initiation risk that was associated with higher foot contact horizontal and vertical velocities in addition to lower transitional acceleration of center of mass. We found that cITW exhibited a higher trip risk with toe clearance being significantly lower when compared to healthy counterparts. This study allowed for a quantitative description of foot contact dynamics and delineated typical from toe walking among cITW. Overall, the results indicate that cITW are less stable during typical walking and are prone to a higher risk of slip and trip-like falls