• Title/Summary/Keyword: Independent suspension

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Tectonic Strategies in Architectonic Fashion Design (건축적 패션 디자인의 구조적 전략)

  • Yim, Eunhyuk
    • Journal of Fashion Business
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    • v.18 no.1
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    • pp.164-181
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    • 2014
  • As the boundary between fashion and architecture is getting blurred, the interactions of the two fields are turning out abundant as well as essential. This study investigates the tectonic strategies in architectural fashion design as a novel aesthetic in the 21st century by combining literary survey and case analysis on architecture and contemporary fashion. The tectonic strategies in the works of architectural fashion designers were categorized as follows: organic geometry, technological garment construction, and independent space. Organic geometry transforms basic geometric shapes into subtle organic forms after being thrown on the body. Technological garment construction explores the garment structure and volume by applying the structural principle of suspension and fractal geometry. Independent space refers to maintaining the firm three-dimensionality of garment structure which keeps the distance from the body, assuming the similarity to architecture.

Subsystem Synthesis Methods with Independent Coordinates for Real-Time Multibody Dynamics

  • Kim Sung-Soo;Wang Ji-Hyeun
    • Journal of Mechanical Science and Technology
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    • v.19 no.spc1
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    • pp.312-319
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    • 2005
  • For real time dynamic simulation, two different subsystem synthesis methods with independent generalized coordinates have been developed and compared. In each formulation, the subsystem equations of motion are generated in terms of independent generalized coordinates. The first formulation is based on the relative Cartesian coordinates with respect to moving subsystem base body. The second formulation is based on the relative joint coordinates using recursive formulation. Computational efficiency of the formulations has been compared theoretically by the arithmetic operational counts. In order to verify real-time capability of the formulations, bump run simulations of a quarter car model with SLA suspension subsystem have been carried out to measure the actual CPU time.

Transgenic Plants of Easter Lily (Lilium longiflorum) with Phosphinothricin Resistance

  • Ahn, Byung Joon;Joung, Young Hee;Kamo, Kathryn K.
    • Journal of Plant Biotechnology
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    • v.6 no.1
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    • pp.9-13
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    • 2004
  • Transient uidA expression was used to optimize parameters required for biolistic transformation of suspension cells of Easter lily, Lilium longiflourm. Maximum uidA expression occurred following bombardment with gold particles as compared to tungsten. A 3hr pre-treatment of suspension cells with 0.125M osmoticum resulted in a 1.5X increase in uidA expression. A helium pressure of 1550 psi combined with a particle travelling distance of 6cm resulted in maximum uidA expression as compared to either 1100, 1200, or 1800 psi. Transient transformation resulted in up to 493 uidA expressing cells/Petri plate. For stable transformation suspension cells of Lilium longiflorum, were co-bombarded with plasmid DNA containing cucumber mosaic virus (CMV) replicase under the rice actin (Act1) promoter and either the bar or PAT genes under the cauliflower mosaic virus (CaMV 355) promoter. Ten regenerated plants contained the transgene as analyzed by PCR, and two of the ten plants were confirmed to contain the transgene by Southern hybridization. The two transgenic plants were independent transformants, one containing the bar gene and the other both the CMV replicase and bar genes. Plants were sprayed at the rosette stage and found to be resistant to 1000 mg/L of phosphinothricin (Trade name-Ignite) indicating expression of the bar gene throughout the leaves when bar was under control of the CaMV 35S promoter.

Evaluation on Light Scattering Behavior of a Pulverized Coal Suspension (슬러리내 석탄입자의 광산란 특성 평가)

  • Hwang, Munkyeong;Nam, Hyunsoo;Kim, Kyubo;Song, Juhun
    • Transactions of the Korean hydrogen and new energy society
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    • v.24 no.5
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    • pp.451-460
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    • 2013
  • In a direct coal fuel cell (DCFC) system, it is essential to identify volume fraction of coal suspended in electrolyte melt in order to control its dispersion and fluidity. This requirement is compelling especially at anode channel where hot slurry is likely to flow at low velocity. In this study, light scattering techniques were employed to measure the volume fraction for a pulverized coal suspension with relatively high absorption coefficient. The particle size, scattering angle, and volume fraction were varied to evaluate their effects on the scattering behavior as well as scattering regime. The larger coal size and smaller forward scattering angle could provide a shift to more favorable scattering regime, i.e., independent scattering, where interferences of light scattering from one particle with others are suppressed.

Solid-Liquid Mass Transfer in Gas-Solid-Liquid 3-Phase System Agitated Vessel (기 - 액 - 고 3상계 교반조내의 고-액간 물질이동)

  • Lee, Young Sei;Kato, Yoshihito;Suzuki, Junichiro
    • Applied Chemistry for Engineering
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    • v.17 no.5
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    • pp.509-516
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    • 2006
  • The solid-liquid mass transfer coefficients $k_L$ in a gas-liquid-solid three phases agitated vessel were measured with conventional impellers (e.g. Rushton turbine, paddle, and propeller). For the conventional impellers the rotational speed for the complete suspension $N_{js}$ changes with the impeller height and gas flow rate. Mass transfer coefficient of the Rushton turbin impeller, for which the particle suspension was independent of the aeration, is correlated only with Pgv. Mass transfer coefficients $k_L$ for the Rushton turbine, paddle and propeller impellers were affected by the impeller position.

Optimum Design for Reducing Steering Error of Rack-and-Pinion Steering Linkage (랙-피니언 조향기구의 조향오차 최적설계)

  • 홍경진;최동훈
    • Transactions of the Korean Society of Automotive Engineers
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    • v.6 no.2
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    • pp.43-53
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    • 1998
  • This paper addresses an optimization for reducing a steering error of a rack-and-pinion steering linkage with a MacPherson strut independent front suspension system. The length, orientations and inner joint positions of a tie-rod are selected as design variables and Ackerman geonetry, understeer effect, minimum turn radius, wheel alignment and packaging are considered as design constraints. Nonlinear kinematic analysis of the steering system is performed for calculating the values of cost and constraints, and Augmented Lagrange Multiplier(ALM) method is used for solving the constrained optinization problem. The optimization results show that the steering error are considerably reduced while satisfying all the constraints.

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Control of Radial Force in Double Stator Type Bearingless Switched Reluctance Motor

  • Peng, Wei;Xu, Zhenyao;Lee, Dong-Hee;Ahn, Jin-Woo
    • Journal of Electrical Engineering and Technology
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    • v.8 no.4
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    • pp.766-772
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    • 2013
  • Modeling and control of radial force in the double stator type bearingless switched reluctance motor (BLSRM) is researched. The rotational torque is controlled independently from the radial force control. And the radial force is constant which is independent from the rotor position. In order to realize steady suspension, analytical models of torque and radial force for the proposed structure are derived. Meanwhile, in order to realize steady suspension, control scheme for proposed BLSRM is proposed. In the control method, the radial force can be controlled in arbitrary direction and magnitude by selecting some combinations of radial force windings. The validities of structure and control method are verified by the experimental results.

Effect of suspension plank exercise with hip abduction and modified bridge exercise on the trunk muscle thickness in healthy adults (건강한 성인의 엉덩관절 벌림 서스펜션 플랭크 운동과 수정된 브릿지 운동이 몸통근육 두께에 미치는 영향)

  • Yo-han Kim;Ji-heon Hong;Jae-ho Yu;Jin-seop Kim;Dong-yeop Lee
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.29 no.1
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    • pp.1-9
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    • 2023
  • BACKGROUND: The purpose of this study was to find out which exercise is more effective for the activation of the trunk, when the suspension plank and modified bridge exercise are performed. Weakening of the trunk muscles can lead to secondary injuries such as back injuries. In order to prevent injury, trunk muscles must be strengthened, and representative trunk strengthening exercises include planks and bridges. Each has been developed with a modified method, but since there is no paper comparing which exercise is more effective for trunk muscle strength, it was written to compare the two exercises. METHODS: The subjects were a random sample of 30 healthy men who agreed to participate in the study. The subjects were divided into two groups of 15 people each, and the suspension plank and the modified bridge exercise were performed for six weeks. The thickness of the transverse abdominis (TrA), internal abdominal oblique (IO), external abdominal oblique (EO), rectus abdominis (RA), multifidus (MF) was measured before and after the exercise. The two groups were analyzed using an independent t-test and paired t-test to compare the muscle thickness and the difference before and after exercise. RESULTS: The trunk muscle thickness was increased in both groups with suspension plank and modified bridge exercise, and there was a statistically significant difference. When comparing the two groups, the suspension plank group also showed a significant difference in RA (p<.05). CONCLUSION: As a result of this study, suspension plank exercise can have a positive effect on activating the trunk muscles and strengthening the strength of RA. Therefore, it is considered that suspension plank exercise is a more effective intervention to strengthen trunk muscle than modified bridge exercise.

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e-Engineering Framework to Support Collaborative Design of Automotive Suspension Systems (협업설계를 위한 엔지니어링 프레임워크 개발에 관한 연구 -자동차 서스펜션 모듈에의 적용-)

  • Park, Seong-Whan;Lee, Jai-Kyung;Lee, Han-Min
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.21 no.6
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    • pp.555-561
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    • 2008
  • This paper describes an e-Engineering framework to support collaborative design of automotive suspension systems developed at KIMM(Korea Institute of Machinery and Materials). The e-Engineering framework is proposed and developed on the base of the multi-layered software agents including engineering task agent which is generated from the domain knowledge of experts. The developed framework is aim to widely spread application to the small and medium enterprises by adopting open source technologies such as JADE (Java Agent Development Framework) and by using the independent characteristics related with applicant H/W and 81W system. This framework can provide an integrated design environment to support distributed personnel, design activities and engineering resources during product development process. For the validation of the system's applicability and efficiency, the several practical design processes for automotive suspension systems of RR/FR lower arms and RR cross member are applied and discussed.

Scaling analysis of electrorheological poly(naphthalene quinone) radical suspensions

  • Min S. Cho;Park, Hyoung J.
    • Korea-Australia Rheology Journal
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    • v.12 no.3_4
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    • pp.151-155
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    • 2000
  • A semiconducting poly(naphthalene quinone) radical (PNQR) was synthesized from Friedel-Craft acylation between naphthalene and phthalic anhydride and used as dispersing particles of a dry-base electrorheological (ER) material in silicone oil. Under an applied electric field (E), the dynamic yield stress (${\tau}_{dyn}$) of this ER fluid, obtained from a steady shear experiment with a controlled shear rate mode, was observed to increase with $E^{1.45}$ Based on this relationship, we propose a universal correlation curve for shear viscosity, which is independent of E using a scaling analysis.

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