• Journal of Ocean Engineering and Technology
• /
• v.18 no.2
• /
• pp.39-45
• /
• 2004

We have investigated the usefulness of an active stabilizing system to reduce ship rolling under disturbances, using varying reaction of the flaps. In the proposed anti-rolling system for a ship, the flaps, as the actuator, are installed on the stern, in order to reject the rolling motion induced by disturbances, such as waves. The action induced by the flaps, which is dependent upon the power of the disturbances, can keep the ship in balance. In this study, we define the system parameters under the given system structure, using spectral analysis and experimental studies. Based on this information, we design the controller to evaluate the usefulness of the proposed system.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.28 no.7
• /
• pp.800-808
• /
• 2004

Wind tunnel test of an airplane model with forward swept wing was done in KARI LSWT to evaluate and measure the aerodynamic characteristics of initially designed configuration. Since the given wing planform did not fully satisfy the design requirements, local flow control devices such as vortilon, vortex generator and flow fence were used to delay separation and to enhance aerodynamic characteristics. Also decision making processes of design parameters such as vertical tail boom length, the location, size and the incidence angle of horizontal tail were discussed. The general aerodynamic characteristics of forward swept wing for various control surface deflection conditions of flap, aileron and elevator were also given.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.17 no.4
• /
• pp.430-435
• /
• 2014

This paper presents the case study of the airworthiness certification for the flight control system of tactical UAV. Airworthiness regulations for flight characteristics and design and construction based on the STANAG 4671 are selected, and safety assessment is performed. Stall protection on wing level and turning flight criteria, and flap interconnection system failures were analyzed and applied to the flight control system design. The Hardware-in-the-loop simulation including math model, integrated system verification and validation test and failure mode and effects test were also performed and they are used to validate the means of compliance of the proposed airworthiness.

• Archives of Craniofacial Surgery
• /
• v.23 no.4
• /
• pp.187-189
• /
• 2022

Patients with pixie ear have an attached, tapering, and low-set earlobe. Traditional methods usually describe excision of the caudal portion of the lobule and reattachment in a more superior position. The present report suggests a simplified skin redraping method for correction of pixie ear. The procedure provides easy method to design and perform, which only requires elevation and trimming of the skin. Other ancillary procedures, such as flap design, anchoring, plication, and subdermal fixation, are not required. This method produces satisfactory results. Postoperative scar is invisible because the incision is on the retroauricular region, and the corrected earlobe has a more natural appearance than the repositioned earlobe. Moreover, skin redraping avoids tension, which contributes to minimization of the postoperative scar.

• Journal of the Korean Society of Costume
• /
• v.63 no.7
• /
• pp.1-16
• /
• 2013

The objective of this study is to analyze the characteristic of a functional design for a commercial outdoor brand jacket based on 3 types of functions : windproof, waterproof, and cold proof. To analyze the design and fabric characteristics of outdoor jackets by function, 903 men's and women's outdoor jacket images were selected from the catalogues during S/S 2009 - F/W 2011 of the 6 brands: The North Face, Columbia Sports Wear, Kolon Sports, K2, Arcteryx and Mont-Bell. These brands were selected based on their high market share and brand awareness of the outdoor brands in Korea. In this study, design elements analysis was conducted as following 8 elements: hood/collar height/central front flap/waistline/pocket location/ventilation for the body part/sleeve patterns/cuff for the sleeve part. Fabrics were analyzed by the frequency of fabric types used in the 3 jacket types. According to the result derived from the analysis of the six brands of outdoor wear jacket design trends by year, detachable hood and a co-use of velcro and elastic bands have been mainly designed for all of windproof, waterproof, and cold proof jacket to all in order to respond quickly to changes in the external environment. For reinforced storage function on trekking, the number of pockets has been gradually growing, and a function was being developed to connect an electronic device to a pocket. The method, result, and collateral observations relevant to each of these phases are described. Outdoor jacket design characteristics were investigated for outdoor brands, which can provide data to suggest more accurate functional design, and satisfy functional design needs. In this regard, this research was significant in the sense that it suggested preliminary data to reconsider competitiveness of the brand products.

• Journal of Fashion Business
• /
• v.12 no.6
• /
• pp.93-106
• /
• 2008

The purpose of this study is to analyze design characteristics of Chanel bags by its type and shape, material, color, pattern, decorations in order to give information about foundation of the development of Korean fashion brand handbags and help suggest predict future handbag trends. The methods of this study are documentary research and demonstrative research. For the documentary research, mainly previous researches and fashion related data were used. For the demonstrative research, the total of 288 design photos of Chanel bag were selected from 2001 S/S season to 2008 F/W season fashion collections of firstview.com., style.com., and mode et mode. The results of this study are as follows; First, type and shape of bags are clutch(30%), flap(25%), shoulder(25%), others(10%), tote(5%), hobo(5%). Second, the material data shows that leather(46%), mixed(18%), fabric(17%), synthetics (10%), patent(3%), others(3%), and suede(2%). Third, the patterns are geometrical(27%), solid(25%), combination(24%), symbolic(11%), abstract(11%), nature(2%). Fourth, the colors are largely monochrome(73%) and multicolor(27%). In case of monochrome, achromatic color(50%) is more than chromatic color(23%). The chromatic color is consisted of YR(9%), Y(9%), R(5%), RP(4%), PB(2%), P(1%), GY(0.5%), BG(0.5%). The multicolor is consisted of similar coloration(12%), contrast coloration(10%), and accent coloration(5%). Fifth, the decoration data shows that metallic(53%), plain(23%), combination(22%), and handcrafted(1%).

• Journal of Fashion Business
• /
• v.10 no.2
• /
• pp.147-165
• /
• 2006

The purpose of this study was to develop design of maternity dress combined with nursing. Six maternity wears combined with nursing were developed through the literature, preceding studies, and web sites those were about pregnancy, breast feeding, a maternity wear, and a nursing wear. The results of this study were as follows: 1. In order to develop clothes of diverse styles and designs, an after five dress, a poncho style blouse, wrap culotte as well as a skirt suit, a pants suit, an one-piece dress were designed. 2. It was established to make more amounts of front ease than those of back ease and to supplement a frontal hanging portion in consideration of breast development and abdominal prominence. 3. In order to make use of a maternity wear after a birth, stretch fabric was used for an abdominal part or whole clothes. Also an empire line and pleats, a poncho style, a shirts blouse, and inserting a string were used for it. 4. the fabrics of cotton, mixed cotton, polyester were used because pregnant women and nursing mothers perspires more than others do. 5. The horizontal, vertical, diagonal slits for a breast feeding were made. The storm flap of a trench coat, a machine pleated fabric, a poncho, a bolero style were used for a nursing cover.

• Fashion & Textile Research Journal
• /
• v.15 no.6
• /
• pp.862-873
• /
• 2013

The purpose of this study is to analyze the formative characteristics and the aesthetic values of the Military style in the 20th century and the images of the Military look shown in recent collections. The results of this study are as follows; 1) The aesthetic values of the Military style includes authority, functionality, resistibility and bisexuality. Authority is represented in suits and coats attaching details such as epaulets, flap pockets, gold buttons and badges. Functionality is represented in pants suits and skirts suits which are comfortable and simple. Resistibility is represented in wrinkled, dirty-old and torn military items. Bisexuality is shown on the military pants suits that a skirt or a mink coat is draped over. 2) The Military look in collections are expressed in classic, romantic, sexual, sporty, avant-garde and ethnic images. Classic images are appeared in suits and coats attaching details such as epaulets, flap pockets, gold buttons and badges. Romantic images are represented in the military items made of pastel-tone lace or splendid colored silk. Sexual images are appeared in designs to expose or to focus in women's body. Sporty images are represented in the military items made of new materials such as cotton-fleece, cotton-jersey and tencel. They have camouflage prints, melange-gray and fluorescent colors. Avant-garde images are appeared in the deformed suits and outer made of special materials with camouflage prints, khaki, gray and black. Ethnic images are represented in wearing military and ethnic items at the same time or military items made of ethnic colors, prints and handmade details.

• Journal of the Korean Society for Nondestructive Testing
• /
• v.35 no.3
• /
• pp.179-184
• /
• 2015

In this study, the flap fatigue test of a 48 m long wind turbine blade was performed for 1 million cycles to evaluate the characteristics of acoustic emission signals generated from fatigue damage of the wind blades. As the number of hits and total energy continued to increase during the first 0.6 million cycles, blade damage was constant. The rise-time result showed that the major aspects of damage were initiation and propagation of matrix cracks. In addition, the signal analysis of each channel showed that the most seriously damaged sections were the joint between the skin and spar, 20 m from the connection, and the spot of actual damage was observable by visual inspection. It turned out that the event source location was related to the change in each channel's total energy. It is expected that these findings will be useful for the optimal design of wind turbine blades.

• Archives of Plastic Surgery
• /
• v.37 no.1
• /
• pp.46-51
• /
• 2010

Purpose: The loss of web space is caused by congenital syndactyly or acquired burn injury, trauma or surgery. Numerous surgical procedures have been described for restoration of the web space. Local flaps are usually preferred because of the easiness to perform and tolerable postoperative outcome. Among the various local flaps, the authors introduce V-M plasty for correction of web space contracture and syndactyly. Method: From March 2007 to Jun 2008, 4 patients underwent V-M plasty for correction of web space contracture and syndactyly. V-M plasty consists of 3 distinct triangular flaps. One triangular flap is designed next to the web region on the dorsal site of the hand, whereas the remaining 2 triangular flaps are placed on the volar site. The dorsal triangular flap is then placed between the volar adjacent triangular flaps. At the end of the operation, the involved fingers or toes are positioned in abduction to avoid kinking of the triangular flaps. Result: All the patients gained web functions with good esthetic appearance without any recurrence or complications. Mean follow-up was 8 months. Conclusion: V-M plasty is a safe, easy and rapid procedure to design and apply by using local tissues without the needs for a skin graft or risk of linear scarring and recurrence. The authors advise this versatile technique both in primary and recurrent cases of web space contracture and syndactyly.