Purpose: This study aimed to examine the relationship between performance-based and rating-based measures of executive functions (EFs) in elementary school students derive implications for EF assessment. Methods: Data were collected from 101 Sejong City using (Go/Nogo, Digit Span, Tower Hanoi, Task Switching, Stroop, WCST) measures, including Social-Emotional Competence Diagnostic Tool Korean version Barkley Deficits Executive Functioning Scale. Descriptive statistics correlation analyses...

This article presents experimental studies of fuzzy logic application to control a two-wheel mobile robot(TWMR) system. The TWMR system is composed two systems, an inverted pendulum and robot Although linear controllers can stabilize the TWMR, are expected have robustness uncertainties so that resulting performances be better. Nominal rules used balance position TWMR. Fuzzy embedded on DSP chip Balancing PID controller under disturbances compared through extensive studies.

Past studies on respirator fit or performance have mostly been done for Whites male subjects, and little attention has paid to minorities Asians. To fill this gap, study was designed provide facial anthropometric data Koreans analyze the association between dimensions factors three brands of quarter-mask respirators, two domestic one imported brand, using a PortacountTM 8020. A total 110 university student 70 males 40 females volunteered participation in study. The results showed that Korean...

Cracks in asphalt pavements create irreversible structural and functional deficiencies that increase maintenance costs decrease lifespan. The understanding of fracture behavior concrete laboratory specimens is currently an open research area comprises a vital link the ability to design paving mixtures flexible pavement structures resist cracking. Towards this end, micro-fabric distinct element modeling (MDEM) approach was implemented two-dimensional particle flow software package (PFC-2D)...

In this paper, we propose a new approach to thermometer-to-binary encoder of Flash ADCs. Instead integrating bubble error correction circuit as previous approaches, proposed integrates detection circuit. The advantage is that it can handle all types whereas approaches often deal with first-order only. Simulation results show the consumes very little energy.

We present an adaptive transmission scheme for the CR (cognitive radio) systems. The proposed estimates distance between a user and incumbent utilizing IT (interference temperature) information recognized through spectrum sensing procedure. Then, determines maximum power which does not cause any interference to by using CR-APC (CR-adaptive control). At same time, in order provide throughput user, adaptively selects modulation considering determined value applying CR-AMC coding) given channel...

With the growing prevalence of Internet Things (IoT), related security threats have kept pace. The need to dynamically detect vulnerabilities in IoT devices cannot be overstated. In this work, we present FIRM-COV, first high coverage-oriented greybox fuzzer for firmware. FIRM-COV leverages newly optimized process emulation by targeting programs and mining real-world vulnerabilities. focuses on solving problems fuzzing based empirical analyses, using required structured input, inaccuracy...

We propose a closed-loop multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) transmission scheme appropriate for the IEEE 802.22 wireless regional area network (WRAN) channel environments. The proposed utilizes Grassmannian beamforming and an antenna selection algorithm to maintain bit-error-rate (BER) performance reduce feedback information. To further information considering property of WRAN, employs extension period subcarrier grouping. Simulation results...

This study aims to evaluate the accuracy, precision and conservatism of three models (ECETOC TRA 3.1, Stoffenmanager 7.0 ART 1.5) by comparing model predictions repeated exposure measurements in Korea. We collected (n = 390) detailed contextual information extracted from 10 survey reports published Ministry Employment Labour mid-2000s. Using these models, seven occupational health professionals predicted inhalation solvents used for cleaning tasks 51 situations at 33 companies 15 industries....

This paper investigated the conductance-state stability of TiN/PrCaMnOx (PCMO)-based resistive random-access memory (RRAM), which serves as a kernel weight element in convolutional neural networks (CNNs), to realize accurate feature extraction from images. On application initial forming process that actively drives more oxygen ions form an interfacial layer between TiN and PCMO RRAM devices with high voltage ±4 V, switching behavior noticeable window was observed. However, achieved...

The discrete element method (DEM) represents a convenient and powerful tool for studying effects of material microstructure on fracture mechanisms in asphalt concrete. In this paper, the rate-dependency concrete is investigated using cohesive zone model with bulk viscoelastic properties combined bilinear post-peak softening. Details constitutive models implemented DEM, particular emphasis verification models, are presented. Experimental test results based disk-shaped compact tension obtained...

Four-point bending beam tests are applied to investigate the behavior of asphalt composites strengthened by grid reinforcements made carbon, glass, and polyester fiber grids. Both experimental analytical predictions compared considering deflection carbon grid-reinforced beams. This study especially shows significant structural improvement better crack resistance composite beams Temperature loading rate dependencies also evaluated for both reinforced unreinforced The maximum forces...

A smart home provides automated services based on the context of environment and user activity.Context acquiring, processing, reasoning, disseminating to are complex tasks for a context-aware system.An appropriate middleware architecture could handle such complexity.In this paper, we proposed system in environment.Here, is modeled ontology using Web Ontology Language (OWL).In addition, profile applied improved rule-based reasoning algorithm integrated into infer high-level contexts from...

This work investigates the mechanical performance and chloride ion penetration of base concrete for shotcrete that was reinforced with non-corroding polyolefin fibers marine structure application. Test parameters included fiber conventional steel fiber, use ground granulated blast furnace slag (GGBFS), two different methods to evaluate property (ASTM C 1202 NT-BUILD 492). results show containing had lower compressive strength, flexural toughness than those but still met criteria shotcrete....

We introduce a MEMS-based pedestrian dead reckoning (PDR) system. A walking navigation algorithm for pedestrians is presented and map-matching the system based on (DR) proposed. The PDR equipped human body provides position information of pedestrians. And this able to be used in ubiquitous sensor network (USN), U-hearth monitoring system, virtual reality (VR) etc. detects step using novel technique simultaneously estimates length. Also an azimuth calculated fluxgate which one magnetometers....