Measurement and Analysis for Determination of PCR of the CANDU6 Core

Kim, Jaeha,Motalab, Mohammad Abdul,Kim, Yonghee,Kim, Gwangsoo Informa UK (Taylor Francis) 2018 Nuclear technology Vol.201 No.2

EFFECTS OF EMOTIONS AND PERSONALITY ON BLACK FRIDAY MISBEHAVIOR

Sharron J. Lennon,Minjeong Kim,Jaeha Lee,Kim K. P. Johnson 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7

Black Friday (BF) is the day after Thanksgiving when U.S. retailers offer “doorbuster” promotions. BF shopping has become a tradition for 48.5% of U.S. shoppers and their families (NRF, 2015). However, BF has a dark side gaining notoriety as shoppers compete for bargains, even at others’ expense. Many incidents of consumer misbehavior (CMB) have been reported: fighting, pepper-spraying, and throwing oneself on desired products to keep other shoppers at bay (Black Friday violence, 2011; Lisa, 2015). BF promotions have expanded outside the U.S. to the U.K.; related CMB (e.g., fighting) was reported in several U.K. locations (“Black Friday,” 2014). Using an online experiment, this study investigated antecedents to CMB from a psychological perspective. Specifically this study examined (1) how positive and negative emotion evoked on BF as a result of varying levels of goal blockage impacts CMB; (2) how personality traits such as self-control and public self-consciousness impact and moderate the relationship between negative emotions evoked on BF and CMB; and (3) how women and men differ in terms of antecedents driving BF CMB and the role personality traits play in impacting CMB. 576 BF shoppers completed the experiment; 411 (M=129, F=282) had shopped in stores on BF were included in analyses. Mean age was 25.8 (SD=8.2) and over half had shopped in stores and online on BF. All scales had adequate reliabilities and EFA confirmed the dimensionality of the original scales. Two emotion factors were named anger and thrill. To assess CMB, shoppers indicated the extent to which they engaged in a series of misbehaviors on BF. A second measure of misbehavior, dysfunctional severity of one’s behavior, evaluated the extent to which one’s own behavior on BF was unacceptable and inappropriate. Multi-group path analysis was used to analyze the data. Results found a significant difference between the sexes (Δdf= 8, Δχ2=32.48, p < .0001), suggesting that women and men do differ in the personality traits impacting CMB. To determine specific paths that differ between the sexes, a series of the χ2 difference tests were performed by imposing equality constraints on each of the path coefficients. The χ2 difference tests showed that women and men significantly differed in four paths; (1) how anger impacted dysfunctional severity (2) how self-control moderated the relationship between anger and CMB, (3) how public self-consciousness moderated the relationship between anger and CMB and (4) how public self-consciousness impacted CMB. For both sexes, both negative emotion such as anger and positive emotion such as thrill led to CMB. Additionally, dysfunctional severity had a positive influence on CMB for both women and men. However different personality traits moderated how anger impacted CMB. For women, public self-consciousness had a direct positive and moderating effect on CMB. When women experienced a mild level of anger, public self-consciousness appears to suppress CMB. However contrary to common beliefs that public self-consciousness may help manage behavior in public, after a certain threshold in terms of the intensity of anger, public self-consciousness had an opposite effect in women. High public women exhibited more CMB than low public women. Public self-consciousness had no direct or moderating effect on men. For men, self-control had a direct, indirect and moderating effect on CMB. In the context of intense anger, men with higher self-control exhibited less CMB than those with low self-control. Self-control also had an indirect effect on CMB by mitigating dysfunctional severity. For women, self-control had no impact on CMB. BF is part of the U.S. Thanksgiving tradition and has been adopted in other countries to kick off the holiday shopping season. Extreme deals (doorbusters) and heightened consumer anticipation as a result of such promotions have led to incidents CMB on BF (Lisa, 2015). With observations of CMB on BF across different countries and extant research findings about the role of emotion on CMB (Bedi & Schat, 2007), this study revealed (1) emotion as a motivator for CMB, (2) that personality traits moderated the impact of emotion on CMB, and (3) differences exist in these relationships between women and men. Both negative (anger) and positive emotion (thrill) led both sexes to misbehave on BF. Whereas most media highlight how angry customers misbehave on BF, positive emotion also contributes to CMB on BF. How personality traits moderated the relationship between anger and CMB significantly differed between the sexes. For women, public self-consciousness mattered, whereas self-control mattered to men in moderating the effect of anger on CMB. The findings of this research shed new light on CMB on BF and also give new insights into the CMB literature. Prior CMB research often assumed that the sexes behave similarly. This research provides empirical evidence that women and men are indeed different in how personality moderates the effect of anger on CMB. Future research is needed to determine the level of anger and public self-consciousness that lead to CMB for women.

Six Degree-of-Freedom Energy Bounding Algorithm for Stable and Directionally Transparent Haptic Interaction

Jaeha Kim,Chang Hoon Seo,Jeha Ryu 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10

This paper proposes a 6-DOF energy bounding algorithm (EBA) for stable and directionally transparent 6-DOF haptic interaction. The proposed 6-DOF algorithm can solve the problem that the direction of the force vector can be distorted if the original EBA shortens the magnitude of each component of force vector for guaranteeing stability in some directions. The proposed solution is based on guaranteeing passivity on each direction and projecting the direction of the resultant force vector on its original direction as had been proposed by Preusche et al. [5] for PO/PC algorithm [3]. The preliminary validity of the proposed algorithm is shown by some experiments.

Demonstration of Unsupervised Learning With Spike-Timing-Dependent Plasticity Using a TFT-Type NOR Flash Memory Array

Kim, Chul-Heung,Lee, Soochang,Woo, Sung Yun,Kang, Won-Mook,Lim, Suhwan,Bae, Jong-Ho,Kim, Jaeha,Lee, Jong-Ho IEEE 2018 IEEE transactions on electron devices Vol.65 No.5

<P>We investigate the characteristics of a synaptic imitation device using a thin-film transistor (TFT)-type NOR flash memory cell with a half-covered floating gate. The long-term potentiation (LTP) and long-term depression (LTD) required for the operation of the spike-timing-dependent plasticity (STDP) algorithm are implemented using the proposed pulse scheme. Unsupervised learning is successfully demonstrated by applying the STDP learning rule through software MATLAB simulation reflecting the LTP/LTD characteristics of the fabricated TFT-type NOR flash memory array. We present the learning and recognition processes of <TEX>$28\times28$</TEX> MNIST handwritten digit patterns. First, STDP learning in a single-neuron string ( <TEX>$784\times1$</TEX>) is investigated, after which STDP learning is demonstrated in a multineuron array ( <TEX>$784\times10$</TEX>) with a lateral inhibition function to demonstrate the ability of multipattern learning and recognition. Meanwhile, we investigate the key factors of STDP unsupervised learning. Finally, an approach is suggested to implement a hardware neural network using the conventional CMOS technology for STDP unsupervised learning as a visual pattern recognition system.</P>

Development of 3-D HCMFD algorithm for efficient pin-by-pin reactor analysis

Kim, Jaeha,Kim, Yonghee Elsevier 2019 Annals of nuclear energy Vol.127 No.-

<P><B>Abstract</B></P> <P>This paper presents the characteristics and performances of the HCMFD (Hybrid Coarse-Mesh Finite Difference) algorithm for 3-D pin-by-pin reactor core analyses. The HCMFD algorithm has been suggested for an extremely efficient parallel computing of a pin-by-pin neutron diffusion analysis with a pin-level nodal calculation based on a non-linear local-global iterative framework. The fundamental ideas and concepts for the one-node CMFD scheme, in combination with the conventional two-node CMFD scheme using the nodal expansion method, has been described in detail. When the HCMFD algorithm is applied to a 3-D problem, it provides flexibility on the axial mesh refinement so that one can easily optimize the axial mesh size to treat a significant heterogeneity in axial direction. In this paper, some possible variations in axial mesh set up and several numerical strategies for better convergence are discussed. The overall features of the 3-D HCMFD algorithm were identified through analyses of the 3-D EPRI-9R benchmark, and the potential performance of the HCMFD algorithm for a practical pin-by-pin reactor core analysis has been estimated by solving a big PWR problem. Including the sensitivity study regarding the optimization in axial direction, the parallel performances of the 3D HCMFD algorithm were measured and compared with those of a conventional two-node CMFD scheme. It was shown that the HCMFD algorithm has clear advantages over the conventional CMFD approach in 3-D pin-by-pin core analyses.</P> <P><B>Highlights</B></P> <P> <UL> <LI> For an efficient 3-D pin-wise reactor analysis, a 3-D HCMFD (Hybrid CMFD) algorithm has been developed. </LI> <LI> A highly parallel computing can be performed with the HCMFD algorithm. </LI> <LI> With the HCMFD algorithm, a big whole PWR core can be analyzed well within a minute in a small commercial parallel computer. </LI> </UL> </P>

Design Approach for Improving Current Concrete Median Barriers on Highways in South Korea

Kim, WooSeok,Lee, Ilkeun,Jeong, Yoseok,Zi, Goangseup,Kim, Kyeongjin,Lee, Jaeha American Society of Civil Engineers 2018 Journal of performance of constructed facilities Vol.32 No.3

Characteristic Risk Factors Associated with Planned versus Impulsive Suicide Attempters

Jaeha Kim,Kang-Sook Lee,Dai Jin Kim,Seung-Chul Hong,Kyoung Ho Choi,Youngmin Oh,Sheng-Min Wang,Hae-Kook Lee,Yong-Sil Kweon,Chung Tai Lee,Kyoung-Uk Lee 대한정신약물학회 2015 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.13 No.3

Objective: The present study aimed to investigate predictors for planned suicide attempters. Methods: This study included 1,003 patients who attempted suicide and visited emergency department. They were divided into two groups, planned suicide attempters (SAs; n=133 [13.3%]) and impulsive SAs (n=870, [86.7%]), and the demographic variables, clinical characteristics, factors related to suicide, and psychiatric resources of the groups were compared. Results: Major depressive disorder and substance use disorders were more common among planned SAs than among impulsive SAs. Additionally, the planned SAs were older, more likely to be divorced, separated or widowed, and more likely to have co-morbid medical illnesses, severe depression, higher suicidality, and self-blaming tendencies than the impulsive SAs. Financial problems and physical illnesses were more common in planned SAs but interpersonal conflicts were more frequent in impulsive SAs. Planned SAs had fewer previous suicide attempts but these were more serious suicide attempts. The presence of the hope to die, a written will, and suicidal ideation of a repetitive, intense, and continuous nature were predictive of planned SAs. Conclusion: The present findings demonstrated that planned SAs had more severe psychopathology and medical illnesses than impulsive SAs. Therefore, screening for depression, substance use disorders, and suicidal plans among old and medically ill patients may be important for preventing suicide attempts.

Divergence in calling songs and genetic sequences in three cryptic cricket species (Genus Loxoblemmus) in Korea

Jaeha Ahn,Hyojoong Kim,Yikweon Jang 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05

The genus Loxoblemmus has three speices in Korea: L. doenitzi, L. campestris and L. equestris. Males of L. doenitzi have flat heads and triangular horns on both sides of their frons, whereas males of L. campestris and L. equestris have flat heads and no horns. The latter two species are not clearly distinguished based on morphology and thus may constitute cryptic species. We studied the divergence in morphology, calling songs, and genetic sequences to understand patterns of differentiation of these three species. Distributions of the number of file teeth and wing morphology overlapped in L. campestris and L. equestris. In calling songs, the number of pulses in a chirp was four in L. campestris, but that was greater than or equal to six in L. equestris. The genetic sequence analyses using 16S rRNA and COI barcode revealed that L. doenitzi diverged off earlier from the other two species. Thus, the genetic data were congruent with the calling song data in three Loxoblemmus species. Our results suggest that the speciation processes may be closely related to differentiation in calling songs in the Loxoblemmus complex.

Maximum energy transfer condition for piezoelectric energy harvesters with single pulsed vibration inputs

Kim, Jaeha,Yang, Joonseok,Lee, Sanggu Institution of Electrical Engineers 2014 Electronics letters Vol.50 No.8

The optimal capacitive load condition is derived for a passive bridge rectifier to harvest the maximum amount of energy when a piezoelectric generator (PG) receives a single vibration pulse (e. g. a button press). When the PG is modelled as a current pulse generator with an internal shunt capacitance (CP), it is shown that an ideal bridge rectifier collects the maximum energy when its output capacitance is set to 3.C-P. The impacts of the nonzero turn-on voltage and on-resistance of the diodes are also discussed. The experimental results with a 300 mm(2) lead magnesium niobate-lead titanate PG and a Schottky-bridge rectifier with 0.22 V turn-on voltage demonstrate that the maximum energy transfer occurs at a capacitance ratio of 3.3, collecting 117 mu J from a single button press.

Debating the Role of the Korea Media Rating Board

Jaeha Chelsea Kim 중앙대학교 영상콘텐츠융합연구소 2014 TechArt :Journal of Arts and Imaging Science Vol.1 No.3