• Korean Journal of Agricultural Science
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• v.44 no.1
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• pp.16-22
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• 2017

An experiment was conducted to detect aquaculture pond bottom soil nutrients, pH and electrical conductivity with a view to optimize production and to incorporate the scientific method of fish nursing, rearing and culturing at Noakhali district in Bangladesh. The soil samples were collected from the recently dug ponds (1 - 5 years) and older ponds (> 5 years). Samples were taken from five different spots in a Z shape from each pond and were mixed to get a composite sample. The composite samples from the ponds were collected in polyethylene bags and shipped to the laboratory for analysis. The soil samples were analyzed with respect to pH, electrical conductivity (EC), organic carbon (OC), organic matter (OM), nitrogen (N), phosphorous (P), potassium (K) and sulfur (S). The average value of pH, OC, OM, N, P, K and S were $7.43{\pm}0.40$, $2.21{\pm}1.43%$, $1.47{\pm}0.53%$, $2.52{\pm}0.94{\mu}g\;g^{-1}$, $0.126{\pm}0.047{\mu}g\;g^{-1}$, $3.84{\pm}1.77{\mu}g\;g^{-1}$, $0.191{\pm}0.106{\mu}g\;g^{-1}$ and $306.72{\pm}222.05{\mu}g\;g^{-1}$ respectively, in Noakhali. The average EC, OC, OM, N and P contents were found to be higher in Subornachar than those in Sonapur. On the other hand pH, K and S were found to be higher in Sonapur than the values of Subornachar. The pH, EC, OC, OM, N and S contents were found to be higher in new ponds than old ponds whereas P and K contents were found to be higher in old pond than in new pond.

• Fashion & Textile Research Journal
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• v.8 no.1
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• pp.80-88
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• 2006

This study attempted to undertake comparative analysis of woman's jacket pattern and details based on the Crinoline and Bustle style of the 19th century, comprehend the relation and differences between the two styles. And it also presented the resultant characteristics and attempted reproducing the original dress of the past for the development of modern woman's jacket design. Larger portion was occupied for the breast front width than the back width for both Crinoline and Bustle style, which indicated the remarkable difference between these styles and modern jackets in terms of pattern size. Circumferences also showed that both styles had larger size for the front region than for the back. Divided by two types of pattern shape. The Crinoline style has a waist line and flare. On the other hand, the Bustle style does not have a waist line and has pleats. These two styles shows distinct differences of patterns even if they seem similar. It was essential to undertake the designing of models by giving a consideration to the characteristics of patterns of the two styles. With respect to how to sketch the study models which will be applied for the reproduction to modern body sizes were as follows: the front bust circumference; B/4 +1+1 cm, the back bust circumference; B/4 +1-1 cm, front waist circumference; W/4 +1+1 cm, back waist circumference; W/4 +1-1 cm, the height of sleeve crown; AH/3, armhole line; B/4, the back width /2; 17.5 cm, the breast front width /2; 16.5cm. And for the rest parts, sizes reflecting the characteristics of the patterns of two styles have been applied.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.34 no.3
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• pp.299-305
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• 2010

In general, the flexible forming die that has been used in the flexible forming process has the identical punch size; hence, its flexibility is relatively low because the range of allowable curvature radii is limited due to the uniform punch tip radius. Hence, a conceptual design of a sectional flexible die is presented for enhancing the flexibility of the forming process. Two punches of different sizes are used to configure the arbitrary forming surface. For a forming region with a relatively large curvature radius, a large punch array block is used; on the other hand, for the forming regions with small curvature radii, a small punch block is used. The cross-sectional profiles are compared with the target shape for evaluating the effectiveness of the process. Consequently, it is confirmed that the sectional flexible die can be used along with a combination of punch blocks of different sizes for manufacturing objective surfaces of complex shapes.

• The Korean Journal of Zoology
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• v.38 no.4
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• pp.483-489
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• 1995

Retinoic acid was found to block membrane fusion of chick embryonic myoblasts in culture. This effed was dosedependent and could he reversed upon removal of the agent from the culture medium. Furthermore, the retinoic acid-mediated inhibition of membrane fusion was observed with the fusion competent cells but not with the cells that had already been committed for fusion, indicating that the effect of RA is differentiation stage-specific. However, retinoic acid showed little or no effect on the ability of the cells to form bipolar shape and to align along their axes. Neither the cell proliferation nor accumulation of muscle specific proteins, such as creatine kinase and tropomyosin, was impaired significantly. On the other hand, retinoic acid blocked the differentiation time~ependent loss of fibronectin, whose process is prerequisite for myoblast fusion. These results suggest that retinoic add acts as a specific inhibitor of membrane fusion by preventing the loss of fibronectin from the differentiating myoblasts.

• Journal of Institute of Control, Robotics and Systems
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• v.22 no.12
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• pp.1011-1020
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• 2016

This paper introduces a tactilely transparent soft glove composed of soft materials and flexible structures. Although it is hard to achieve a high grasping force with conventional grip-assist gloves made from soft material, the proposed glove can exert a high force by using a novel structure. This structure has a triangular shape composed of flexible structural frames, soft fabric, and belts. It can produce grip-assist moment compliantly without harmful force or misalignment with the human fingers. The whole finger part that comes into contact with objects is made of thin and soft fabric in order to facilitate sensation transference. The proposed tactilely transparent soft glove enables the user to manipulate various objects owing to both the softness and high grasping force; it helps lifting heavy weight objects as well as permitting delicate tactile feeling on the palm and fingers. The proposed concept was applied to a two-finger grip-assist device for validation. In addition, the experimental results regarding grasping objects, fingertip force, and grasping force are presented.

• Journal of architectural history
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• v.27 no.2
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• pp.63-78
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• 2018

Pagodas in Myanmar can be largely divided into Zedi and Pato. Zedi is a developed form of the early domed pagodas in India and Sri Lanka, which can be found in the introduction of Buddhism in Myanmar and the comparison of early pagodas in India, Sri Lanka and Myanmar. On the other hand, Pato is where statues of Buddha were enshrined, which is why many scholars referred to it as a temple. However, this study proposes that Pato shall be referred to as a temple-style pagoda in a form unique to Myanmar, based on the origin of Pato, definition of pagodas, and Sarira Enrichment Record of Pato. Moreover, it seems more appropriate to name this type of structure Stupa Temple(塔殿) or Stupa Shrine(塔堂) rather than a Buddhist temple(佛殿) or Buddhist shrine(佛堂) for clear distinction. Pato, or temple-style pagodas, has a ${\acute{S}}ikhara-style$ structure at the center like Ananda Pato upon entering the Pagan (Bagan) kingdom period, on which Zedi-style structures are built. As a result of examining the integration of various Buddhist schools and religions focused on Theravada during the period of King Anawrahta and King Kyanzittha, the ${\acute{S}}ikhara-style$ structure is a symbolic representation of the fact that Theravada embraced Hinduism. The common features shared by pagodas in Myanmar are the centrality of place and the verticality of $y{\check{a}}ngti{\bar{a}}n$ (looking up to the sky) in terms of shape. All temples are placed at the most important and central space, and their forms represent strong religious $y{\check{a}}ngti{\bar{a}}n$ and verticality. These are the features that stand out most among various pagodas in Buddhist countries.

• Journal of the Korean Magnetics Society
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• v.27 no.1
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• pp.23-29
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• 2017

In this study, the influences of magnetization reversal and magnetic interaction on the coercivity of Sr-ferrite particles with different sizes were investigated through various magnetic measurements. The shape of the initial magnetization curve and the magnetic field dependence of the coercive force indicate that the magnetization reversal changes from domain nucleation to wall pinning as the particle size decreases. On the other hand, the Henkel plot, interaction field factor and ${\Delta}M(H)$ obtained from the DCD and IRM curves show that the strength of the dipolar interaction is increased with increasing the particle size. Therefore, it can be concluded that coercivity is closely related to magnetic interaction as well as magnetization reversal mechanism.

• Structural Engineering and Mechanics
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• v.17 no.1
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• pp.51-68
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• 2004

Since the linear elastic fracture analysis has been proved to be insufficient in predicting the failure of strain hardening materials, a number of fracture concepts have been studied which remain applicable in the presence of plasticity near a crack tip. This work thereby presents a new finite element model to predict the elastic-plastic crack-tip field and fatigue life of center-cracked panels(CCP) with ductile fracture under large-scale yielding conditions. Also, this study has been carried out to investigate the path-dependence of J-integral within the plastic zone for elastic-perfectly plastic, bilinear elastic-plastic, and nonlinear elastic-plastic materials. Based on the incremental theory of plasticity, the p-version finite element is employed to account for the accurate values of J-integral, the most dominant fracture parameter, and the shape of plastic zone near a crack tip by using the J-integral method. To predict the fatigue life, the conventional Paris law has been modified by substituting the range of J-value denoted by ${\Delta}J$ for ${\Delta}K$. The experimental fatigue test is conducted with five CCP specimens to validate the accuracy of the proposed model. It is noted that the relationship between the crack length a and ${\Delta}K$ in LEFM analysis shows a strong linearity, on the other hand, the nonlinear relationship between a and ${\Delta}J$ is detected in EPFM analysis. Therefore, this trend will be depended especially in the case of large scale yielding. The numerical results by the proposed model are compared with the theoretical solutions in literatures, experimental results, and the numerical solutions by the conventional h-version of the finite element method.

• Journal of the Korean Home Economics Association
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• v.46 no.1
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• pp.25-37
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• 2008

The aim of this study was to provide basic materials that would enable students who take courses in the subjects of technology and home economics to take the knowledge and technological skills they learn in the classroom and apply them to real life situations and to nurture their thinking power and creativity. To achieve these research objectives, a survey was conducted on 217 home economics teachers at 129 schools in the metropolitan area in order to assess their classroom operations and the adequacy of the curriculum regarding "clothes-making and reuse." The results showed that most of the schools surveyed have only one classroom for home economics and that a majority of them are cooking rooms. The most preferred place to practice making clothes was found to be the classroom. In addition, the use of teaching aids pertaining to clothes-making are lacking or in poor shape. Furthermore, analysis of the curriculum regarding "clothes-making and reuse" showed that most of the students use kits that contain materials for making clothes, due to a lack of practice hours. Most teachers thought that this section was appropriate for the school curriculum. In the more detailed categories, the students' ability to use sewing machines was the lowest, while the ability to sew by hand was selected as the most useful and most appropriate for real life situations.

• Journal of Korea Game Society
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• v.14 no.2
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• pp.67-76
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• 2014

Recently there have been many interests on tangible sport games that can recognize the motions of players. In this paper, we propose essential technologies required for tangible games, which are methods for swing motion recognition and the calculation of shuttle cock's trajectory. When a user carries out a badminton swing while holding a smartphone with his hand, the motion signal generated by smartphone-embedded acceleration sensors is transformed into a feature vector through a Daubechies filter, and then its swing type is recognized using a k-NN based method. The method for swing motion presented herein provides an advantage in a way that a player can enjoy tangible games without purchasing a commercial motion controller. Since a badminton shuttle cock has a particular flight trajectory due to the nature of its shape, it is not easy to calculate the trajectory of the shuttle cock using simple physics rules about force and velocity. In this paper, we propose a method for calculating the flight trajectory of a badminton shuttle cock in which the wind effect is considered.