• Applied Microscopy
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• v.33 no.3
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• pp.179-185
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• 2003

The operating accelerating voltage in the electron microscopy may differ from the nominal voltage specified by the manufacture. Thus it is necessary, at least once, to determine the wavelength of electron beam for the nominal accelerating voltage. Particularly in QCBED technique, the wavelength of the incident electron beam on a specimen must be determined as accurately as possible. In this paper we present a simple method to determine accurately the wavelength of electrons from LACBED patterns of a known crystalline materials, which is analogous to a method based on Kikuchi patterns reported previously. This method is to utilize three diffraction lines not belonging to the same zone, which nearly intersect at the same point. For an application of the method, the wavelength of electrons for the 200 kv nominal acceleration voltage of JEM2010 is determined to be 0.002496(3) nm ($201.5{\pm}0.4$ kv) with an uncertainty of 0.12%.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.21 no.9
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• pp.1432-1440
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• 1997

The flexibility as well as the stiffness is required to perform mechanical function of a structure such as compliant mechanisms, which can be applied to MEMS(Micro-Electro-Mechanical Systems), flexible manufacturing devices, and design for no assembly. In this paper, the optimal design problem to achieve both structural flexibility and stiffness is formulated using multi-objective function, and the optimization problem is resolved by using Finite Element Method(FEM) and Sequential Linear Programming(SLP). Design examples of compliant mechanisms are presented to validate the design method.

• Proceedings of the IEEK Conference
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• 2002.07a
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• pp.90-93
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• 2002

In this work, an efficient lifting implementation of invertible deinterlacing is proposed. The invertible deinterlacing is a technique developed for intra-frame-based video coding as a preprocessing. Unlike the conventional deinterlacing, it preserves the sampling density and has the invertibility. For a special selection of filters, it is shown that the deinterlacing can be implemented efficiently by an in-place computation. It is also shown that the deinterlacing can be combined with the lifting discrete wavelet transform (BWT) employed in JPEG2000. A bit modification of the original lifting DWT is shown to provide the simultaneous implementation of deinterlacing. This fact makes the proposed technique attractive for the application to Motion-JPEG2000. The inverse transform and the reversible lifting implementation are also discussed.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1998.06a
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• pp.745-749
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• 1998

Mathematical morphology (MM) has been introduced as a powerful tool for studying the geometrical properties of images, MM is a good approach to digital image processing , which is based on the shape feature. The MM operators such as dilation, erosion, closing and opening have been applied successfully to image noise reduction. The MM filters can easily filter the noise when the noise factors are known. However it is very difficult to reduce the noise when images are ambiguous, because the boundary between the noise and object is vague. In this paper, we propose a new method to reduce noise from ambiguous images by using Fuzzy Mathematical Morphology (FMM) operators. Performance evaluation via simulations show that the FMM filters efficiently reduce the image noise. Furthermore, the FMM filters show a good performance compared with the conventional filters.

• Pediatric Infection and Vaccine
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• v.4 no.1
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• pp.150-154
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• 1997

Since 1972, a unique lymphadenitis called as subacute necrotizing lymphadenitis has been described in many Japanese literature. Originally described in Japan, it now appears worldwide. It mainly affects young women and usually manifests as fever and lymphdenopathy. The pathology is characterized by necrosis with loss of nodal architecture, infiltration with many histiocytes, and an absence of granulocytes. We report a case of subacute necrotizing lymphadenitis in axillary area. 4 10-year-old male child was admitted with a one-month history of fever, swelling in the axillary area. He treated with intravenous antibiotics. Despite treatment he remained febrile for the next ten days. 4 dissection of the axillary swelling was then performed, as was a diagnostic lymph node biopsy. The patient's condition resolved over several days and he was discharged.

• Journal of the Korean Applied Science and Technology
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• v.13 no.3
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• pp.51-60
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• 1996

A new one series of chiral schiff's base containing benzylidene aniline moieties was synthesized and characterized by IR, $^1H$ NMR. elementary analysis, and polarized optical microscopy(POM). The yield of these synthetic compounds was in the range of $62{\sim}67^{\circ}C$. The results showed that most of the synthetic compounds were monotropic liquid crystal and exhibited chiral smectic C($Sc^{\ast}$) liquid crystal phases, and the range of phase transition temperature was to $71.4^{\circ}C$ from $45.0^{\circ}C$.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.16 no.4
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• pp.410-412
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• 1983

On maturation of abalone KIKUCHI'S concept of accumulative temperature expressed ${\Sigma}(t_i-{\theta})$ have been apply importantly for an anniversary spawning of the animals. In case of Haliotis discus hannai he was formulated ${\Sigma}(t_i-7.6)>1300$. This expression is able to modify by UKI'S the relationship between the daily feeding rate ($\%$) (Y) ana temperature ($^{\circ}C$) (t) expressed Y= 0.4291 t-0.1501. The modified expression is as the formula ${\Sigma}(Y-3.05)>570$. And the concept its meaning involves is replaced with accumulative ingestion instead of accumulative temperature. This modified concept is understood that on maturation of abalone temperature decide on satiation level, food ingestion decide on gonad maturity rate.

• Korean Journal of Bronchoesophagology
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• v.2 no.2
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• pp.264-267
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• 1996

Necrotizing lymphadenitis is a peculiar reactive condition with a predilection for cervical lymph nodes commonly in young women. It is characterized by persistent, painless cervical adenopathy with or without fever. Although the histologic features may be confused with those of malignant lymphoma, to our knowledge the natural history has been benign in all cases to date. The excised lymph nodes were moderately enlarged and typically showed focal, well-circumscribed, paracortical, necrotizing lesions, and abundant karyorrhectic debris, scattered fibrin deposits, aggregates of large mononuclear cells, and a paucity of plasma cells and neutrophils. Recently we experienced two female cases of necrotizing lymphadenitis and report with a review of literature.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.344-344
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• 2006

Poly(n-hexyl-(S)-3-methylpentylsilane) aggregates confined in microcapsules to keep the aggregation number and ranging in average polymer mass in a microcapsule from $2{\Box}10^{-16}\;to\;2{\Box}10^{-14}g$. were studied by circular dichroism measurements in ethanol (a non solvent) and tetrahydrofuran (an associative solvent at low temperature) at varioustemperatures. The size of each aggregate did not affect the optical activity because the circular dichroism was proportional to the aggregation number at the same condition. Moreover, the circular dichroism appreciably reflected the prepared method, i.e. temperature and solvent.

• International Journal of High-Rise Buildings
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• v.3 no.1
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• pp.1-8
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• 2014

When seismic isolation system is applied to high aspect-ratio (height/wide-ratio) steel structures, there are several problems to be taken into consideration. One is lifting up tensile force on the isolation bearing by overturning moment caused by earthquake. Another is securing building stiffness to produce seismic isolation effects. Under these conditions, this paper reports the structural design of high-rise research building in the campus of Tokyo Institute of Technology. With the stepping-up system for the corner bearings, the narrow sides of single span framework are designed to concentrate the dead load as counter-weight for the tensile reaction under earthquake. Also we adopted concrete in-filled steel column and Mega-Bracing system covering four layers on north & south framework to secure the horizontal stiffness of the building.