• International Journal of Concrete Structures and Materials
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• v.8 no.3
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• pp.213-228
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• 2014

Alkali-activated binder (AAB) is recently being considered as a sustainable alternative to portland cement (PC) due to its low carbon dioxide emission and diversion of industrial wastes and by-products such as fly ash and slag from landfills. In order to comprehend the behavior of AAB, detailed knowledge on relations between microstructure and mechanical properties are important. To address the issue, a new approach to characterize hardened pastes of AAB containing fly ash as well as those containing fly ash and slag was adopted using scanning electron microscopy (SEM) and energy dispersive X-ray spectra microanalyses. The volume stoichiometries of the alkali activation reactions were used to estimate the quantities of the sodium aluminosilicate (N-A-S-H) and calcium silicate hydrate (CSH) produced by these reactions. The 3D plots of Si/Al, Na/Al and Ca/Si atom ratios given by the microanalyses were compared with the estimated quantities of CSH(S) to successfully determine the unique chemical compositions of the N-A-S-H and CSH(S) for ten different AAB at three different curing temperatures using a constrained nonlinear least squares optimization formulation by general algebraic modeling system. The results show that the theoretical and experimental quantities of N-A-S-H and CSH(S) were in close agreement with each other. The $R^2$ values were 0.99 for both alkali-activated fly ash and alkali-activated slag binders.

• East Asian Economic Review
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• v.20 no.3
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• pp.279-309
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• 2016

The proposed Trans-Pacific Partnership (TPP) is a free trade agreement among 12 Pacific Rim countries whose joint gross domestic products (GDPs) account for 36 percent of world GDP and whose mutual trade accounts for approximately 24 percent of world trade. As for most proposed free trade agreements (FTAs), trade economists have provided ex ante computable general equilibrium (CGE) estimates to predict the trade, employment, and real per capita income effects of this agreement, such as ITC (2016). This paper-intended to complement these studies-examines the potential impacts of TPP beyond such traditional CGE estimates, taking a broader economic, governance, and historical perspective. First, we contrast these traditional CGE trade and welfare estimates that treat all firms within an industry as homogeneous with more recent CGE analyses that allow firms' productivities to be heterogeneous. We show that the latter models' trade predictions are much more consistent with ex post empirical evidence of average trade effects of FTAs. Second, empirical evidence now strongly confirms the existence of FTA "contagion." We review this evidence and show that predictive models of the evolution of FTAs indicate that the TPP should be formed. With China now having formed 12 FTAs and negotiating five new ones (including a sixteen member Asia-Pacific FTA), the United States would likely face considerable trade diversion without the TPP. Third, we examine empirical evidence on the likely further economic growth implications of FTAs by reducing firms' uncertainty over trade relations and trade policies. Fourth, we examine empirical evidence on the additional impact of FTAs on consolidating democratic institutions in countries. The TPP would likely help consolidate some of the less mature democracies. Fifth, we examine empirical evidence on the reductions of conflicts (and enhanced peace) between countries owing to the formations of FTAs. We conclude the paper noting that the potential net benefits to member countries of the proposed TPP extend well beyond the real income gains to households based upon traditional CGE models.

• Human Ecology Research
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• v.52 no.2
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• pp.175-188
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• 2014

This study examined the effects of demographic variables and psychological mechanisms (self-efficacy, need for closure, and fashion innovativeness) on each of the four types of impulsive buying, including suggestion impulsive buying, stimulus impulsive buying, pure impulsive buying, and reminder impulsive buying. In addition, the study analyzed the impact these four types had on evaluations after impulsive buying (i.e., diversion in mood, regret for buying decision and a sense of financial loss, and dissatisfaction of products). Data was collected by a marketing research company from five hundreds consumers in seven different cities of South Korea who experienced impulsive buying in the off-line apparel stores within the past three months. The results of regression analyses indicated that self-efficacy and gender significantly affected suggestion impulsive buying. That is, the higher consumers' self-efficacy, the greater their suggestion impulsive buying was. In addition, women had higher Suggestion Impulsive Buying than men did. However, in case of Stimulus Impulsive Buying, gender was the only significant antecedent. That is, women had higher stimulus impulsive buying than men did. In terms of pure impulsive buying, fashion innovativeness was a significant predictor, and for the reminder impulsive buying level, fashion innovativeness and need for closure were significant predictors. Finally, pure and suggestion impulsive buying were correlated with positive consumer evaluations, while both stimulus and reminder impulsive buyings were correlated with negative consumer evaluations. Implications and future studies were discussed.

• Korean Journal of Human Ecology
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• v.18 no.6
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• pp.1237-1246
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• 2009

This study was designed to identify and compare the consumption value and interest in appearance with regard to the comparison of men's cosmetics purchase decision factors. We conducted a survey among 259 men who have experienced the re-purchase of men's cosmetics. All data was analyzed with the SPSS Windows 17.0 program in terms of frequency, percentage, means, standard deviations, paired-t test, Cronbach $\alpha$, factor analyses, and multiple regression. In summary, three findings emerged from this study. First, men's cosmetics purchase decision factors included two subfactors: product quality factors (price, quality, skin compatibility, fragrance) and image factors (trend, brand image, consciousness of others, diversion). Second, a paired-t test revealed that the consideration toward the image factors of a first time purchase decision was lower than the re-purchase decision factors. However the consideration toward the product quality factors of a first time purchase decision was not different from the re-purchase decision factors. Third, the product quality factors were positively influenced by distinction factors of appearance and functional value. And social value, emotional value, and curiosity value were found to be effective in the image factors at the first time of purchase and re-purchase. Also, the product quality factors of re-purchase decisions were influenced by the satisfaction of the first time purchase. This study will contribute to provide some information for marketers in understanding men's cosmetics purchase decisions and to offer basic data for marketing strategies and product development.

• Journal of Korean Neurosurgical Society
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• v.53 no.5
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• pp.274-280
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• 2013

Objective : To evaluate the feasibility and clinical and angiographic outcomes of stent-assisted embolization for complex middle cerebral artery (MCA) aneurysms. Methods : The records of 23 consecutive patients with 24 MCA aneurysms, who underwent stent-assisted embolization of the aneurysm, were retrospectively evaluated. Results : Fifteen aneurysms were treated with one stent and 8 were treated using more than two stents (5 a stent-within-a-stent, 1 triple stents, and two Y-stent). Angiographically, complete or near complete occlusion was achieved in 15 aneurysms (65.2%), residual neck in five (21.7%), and residual aneurysm in three (13.1%). Five aneurysms demonstrated thrombosis within the stent during the procedure and hospitalization, and were resolved by intraarterial and intravenous Tirofiban injection. Symptomatic thromboembolic complications were developed in five patients and permanent deficits demonstrated in two patients with modified Rankin Scale 1 and 2, respectively. Treatment-related permanent morbidity and mortality rates were 8.3% and 0% with relatively high complication rate. Angiographic follow-up was available in 17 aneurysms at 6-31 months (mean, 13.2 months) and showed stable or improved in 15 (88.2%) and major and minor recurrence in one, respectively. Conclusion : Complex MCA aneurysms could be treated by stent-assisted coiling and showed lower recanalization rate during mid-term follow-up by effective flow diversion due to various stent-assisted techniques. Our results warrant further study with a longer follow-up period in a larger sample.

• Journal of Korean Academy of Nursing
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• v.29 no.6
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• pp.1304-1313
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• 1999

Breathing is essential for life and at the same time takes a role as a antidote for stress. In the Orient, it was recognized early that respiration, mind, and body have a relation that is inseparable and therefore proper breathing is so important. However, since the mechanism of therapeutic effect by breathing have not been verified, the treatment has been continued till recent years. From that which originated in the Orient, several techniques in the west have been developed to regulate breathing, and have been applying to the clinical situation and to studies, however scientific studies are still lacking. Recently, relaxed breathing has been used as an efficient strategy for breathing therapy as it has an effect on reducing physiological tension and arousal, and, therefore can be used as a basic technique to control or manage stress. In this study, in order to provide basic information and guidelines for clinical application, which will aid in the application of the theoretical basics of breathing therapy and its technique, a review of the literative was conducted. The findings are as follows: 1. Since proper breathing not only has, physically, the important function in supplying oxygen to the body but also gives a good emotional, or pleasant state of mind, it is the first step in controlling physical and mental health. 2. The basic types of breathing can be classified into two types; ‘diaphragmatic breathing(relaxed breathing)’ and ‘chest breathing(stress breathing)’. In yoga type breathing, there are four kinds of breathing, ‘upper breathing’, ‘mid breathing’, ‘down breathing’, and ‘complete breathing’. 3. The theoretical explanation of the positive thera peutic effect of breathing therapy techniques exemplifies good brain function, sufficient air flow through the nasal passages, diaphragmatic movement, light vagal stimulation, CO2 changes and cognitive diversion but in most studies, the hypothesis of CO2 is supported. 4. The technique of breathing is designated with many names according to the muscles and techniques used for breathing, and for control of stress, diaphragmatic breathing(relaxed breathing) is explained as a basic technique best used to manage of stress. 5. The relaxed-breathing includes slow diaphragmatic breathing, breath meditation, nasal breathing, yogic abdominal breathing, Benson's relaxed response, and quiet response.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.32 no.6
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• pp.588-593
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• 2006

Cyst is pathologic disease develops in hard tissue as well as soft tissue, which is lined by epithelium filled with liquid, semi-liquid, or air. Origins and symptoms of the cyst are various according to region, and symptoms are malocclusion, diversion of root, tooth mobility, periapical swelling, discoloration and lesion expansion, because the odontogenic cysts begin in the numerous rests of odontogenic epithelium. But almost cysts produce no symptoms unless secondary infection occurs. Treatment of small cysts may include extraction, endodontic therapy, and apical surgery. Treatment of a large cysts usually involves surgical removal (enucleation), Marsupialization(a method of decompression) or combination of two before mentioned. Bone graft is done for helping of bone defect healing at the same time of enucleation This clinical research from January 2000 to December 2005, analyzed by the age, sex, classification, size, region, treatment method, whether or not of bone graft of cyst in the jaw in Daegu Catholic University Hospital.

• Journal of Veterinary Clinics
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• v.23 no.2
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• pp.211-217
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• 2006

Six patients (5 dogs, 1 cat) were referred with the complications of urinary tract injuries. Clinical signs were vomiting (4/6), oliguria (2/6) and anuria (3/6). Four females had been spayed, 1 male had cryptorchid orchiectomy and 1 male had been operated for removing calculi in the urethra. Both preoperative and intraoperative investigation were performed and they were confirmed as iatrogenic injuries in the urinary tract during surgery. Depending on the condition of the complications, urethral anastomosis, unilateral nephrectomy, ureteroneocystostomy, colonic urinary diversion, ureterourethral anastomosis, cystostomy and suture of the defect region were performed separately in individual cases. Postoperative observation revealed 50% (3 cases) survival rate of the patients.

• Journal of the Korea Society of Computer and Information
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• v.25 no.8
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• pp.151-157
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• 2020

The first thing we can consider to prevent juvenile delinquency is to punish those criminals. However, this is not always the proper solution. In consideration to the feature of juvenile period when they lack in proper judgment it is better to provide education than punishment so that they are not branded as criminals in our society. Also, by returning to the society, they can obtain social techniques and obtain the opportunity of making contribution to the society, which is also good for their career development. Combining international examples on juvenile delinquency prevention, there is a need to comprehensively evaluate level of probation and risk exposure of juvenile based on placement matrix of comprehensive strategy program in the US. Also, control solution by juvenile crime development phase should be made. In terms of control treatment based on crime phase, crime history should be considered when applying control. For the subject of preventing juvenile crime, it shouldn't be legal organizations like before but shall be home, school, local society, and legal organization together.

• Journal of Korea Water Resources Association
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• v.31 no.6
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• pp.757-768
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• 1998

rate of outflow is equated to the total rate of flow, both the state equation and its linearized equation yield almost identical oscillations of water levels. This shows that effects of pipe resistance on the surges are small, and justifies a free oscillation analysis. Free oscillation equation has six eigen modes of different periods, including a rigid mode which is existed when the pumped rate of outflow differs from the total rate of inflow. The six modes constitute a variety of surges dependent on different inflow and outflow conditions. Presence of the rigid mode needs sophisticated pump operations adjusted to real flood inflows.