• Title/Summary/Keyword: Generalized Mass

Search Result 203, Processing Time 0.03 seconds

Review on the Duplication of Modern Digital Art Works (현대 디지털 예술작품의 복제성에 대한 고찰)

  • Song, Dae-Sup;Ha, Im-Sung
    • Cartoon and Animation Studies
    • /
    • s.17
    • /
    • pp.205-218
    • /
    • 2009
  • The duplication of art works has been made for wide distribution and profit from long time ago. With material duplication due to recent development of digital duplication media its concept was intervened in art works and the meaning gets expanded more. In this thesis, I will review on the concept of recently marked arts duplication connecting with modern mass culture, compare with duplication of machinery duplication era and research on the features to establish in new way. After all, the duplicational features of digital art works got deeply connected with the characteristics of generalized modern digital mass culture for duplication. In previous times old-fashioned machinery duplication such as pictures, woodblock prints and films played their roles as democratic and social value of art works and now it will be enough to say that the modern digital art works could be developed to be non-materialized factor of art works with the concept of duplication as well as duplication of objects just like previous cases. Besides duplicational factors derived spatial and emotional effects with visional sympathy in existing machinery duplication era and could have verified that the object for duplication was transferred from minor commercial producers to major audience.

  • PDF

Evaporation Heat Transfer Characteristics of CO2 R-22 and R-134a in a Horizontal Smooth Tube (수평원관 내 CO2 R-22 및 R-134a의 증발열전달 특성에 관한 실험적 연구)

  • Yun, Rin;Hwang, Jun-Hyeon;Choi, Young-Don;Kim, Yong-Chan
    • Transactions of the Korean Society of Mechanical Engineers B
    • /
    • v.26 no.7
    • /
    • pp.911-918
    • /
    • 2002
  • Evaporation heat transfer coefficients of carbon dioxide($CO_2$), R-22, and R-134a in a horizontal smooth tube were measured and analyzed as a function of heat flux, mass flux, and evaporating temperature. The experiments were carried out by varying heat flux from 10 to 20 $kW/m^2$, mass flux from 170 to 340 $kg/m^2s$, and saturation temperatures of 5 and $10^{\circ}C$. It was found that the heat transfer coefficient of $CO_2$ decreased with a rise of quality due to an earlier liquid-film dryout as compared to R-22 and R-134a. Averaged heat transfer coefficients of $CO_2$ were 22-63% higher than those of R-22 and R-134a at all test conditions. The effects of mass flux and heat flux on averaged heat transfer coefficients were much greater in $CO_2$ than in R-22 and R-134a. When comparing $CO_2$ test results with the correlations in the literature, the existing models yielded large deviations at medium and high qualities. Therefore, a generalized correlation for $CO_2$evaporation heat transfer needs to be developed by including the effects of dryout phenomenon.

Oral Amelanotic Malignant Melanoma in a Dog: Melan A Immunohistochemical Findings (개에서 발생한 구강 멜라닌결핍 악성흑색종 예 : Melan A 면역화학조직 염색 고찰)

  • Kang, Min-Hee;Park, Chul;Park, Hee-Myung
    • Journal of Veterinary Clinics
    • /
    • v.26 no.6
    • /
    • pp.612-615
    • /
    • 2009
  • A 10-year-old intact male mixed breed dog was presented with a three-month history of massive oral mass. Physical examination revealed extending mass from the right upper gingiva. No metastasis was found at the time of presentation. Histopathologic examination of biopsied tissue from the oral mass was consistent with a neuroendocrine tumor with generalized epithelioid cells and few spindle cells. There were highly mitoses and no visible melanin granules with H&E staining. Immunohistochemical staining for Melan A was performed on section of tumor and was strongly positive. Diagnosis was made as amelanotic malignant melanoma based on histopathology with Melan A immunohistochemistry. This case study indicates that the Melan A immunohistochemical staining may be valuable to diagnose amelanotic malignant melanoma in dogs.

Estimation of active multiple tuned mass dampers for asymmetric structures

  • Li, Chunxiang;Xiong, Xueyu
    • Structural Engineering and Mechanics
    • /
    • v.29 no.5
    • /
    • pp.505-530
    • /
    • 2008
  • This paper proposes the application of active multiple tuned mass dampers (AMTMD) for translational and torsional response control of a simplified two-degree-of-freedom (2DOF) structure, able to represent the dynamic characteristics of general asymmetric structures, under the ground acceleration. This 2DOF structure is a generalized 2DOF system of an asymmetric structure with predominant translational and torsional responses under earthquake excitations using the mode reduced-order method. Depending on the ratio of the torsional to the translational eigenfrequency, i.e. the torsional to translational frequency ratio (TTFR), of asymmetric structures, the following three cases can be distinguished: (1) torsionally flexible structures (TTFR < 1.0), (2) torsionally intermediate stiff structures (TTFR = 1.0), and (3) torsionally stiff structures (TTFR > 1.0). The even distribution of the AMTMD within the whole width and half width of the asymmetric structure, thus leading to three cases of installing the AMTMD (referred to as the AMTMD of case 1, AMTMD of case 2, AMTMD of case 3, respectively), is taken into account. In the present study, the criterion for searching the optimum parameters of the AMTMD is defined as the minimization of the minimum values of the maximum translational and torsional displacement dynamic magnification factors (DMF) of an asymmetric structure with the AMTMD. The criterion used for assessing the effectiveness of the AMTMD is selected as the ratio of the minimization of the minimum values of the maximum translational and torsional displacement DMF of the asymmetric structure with the AMTMD to the maximum translational and torsional displacement DMF of the asymmetric structure without the AMTMD. By resorting to these two criteria, a careful examination of the effects of the normalized eccentricity ratio (NER) on the effectiveness and robustness of the AMTMD are carried out in the mitigation of both the translational and torsional responses of the asymmetric structure. Likewise, the effectiveness of a single ATMD with the optimum positions is presented and compared with that of the AMTMD.

Modernity in Costume (복식에 있어서의 근대성의 의미)

  • Yi, Jae-Yoon
    • Journal of the Korean Society of Costume
    • /
    • v.61 no.1
    • /
    • pp.124-131
    • /
    • 2011
  • Modernity is commonly defined as a reflection of the features of modern society based on the historical experience of the West. As such, modernity includes involvement with political, economic, and social changes, a changing world-view, and changing trends in equality, gender roles, a desire for "the new," consumption, distribution based on mass production, and rational reform in fashion and dress. First and foremost, however, modernity in costume has been driven by the functional requirements of industrial capitalism. But while modernity has popularly been regarded as some sort of universal standard, in fact the West and the other societies have vastly different, unique, and particular experiences with their own respective histories of modernization. For this reason, cultural changes in the modernization process should be-indeed, must be-analyzed in the context of a country's own unique historical and cultural circumstances, rather than through the prism or strict adaptation of generalized Western concepts of modernization. Moreover, a "periodization" of the modernization of fashion and dress can be established by examining the characteristics of modernity in costume.

A Case of Myasthenia Gravis Combined with Mediastinal Leiomyosarcoma and Stevens-Johnson Syndrome (종격 평활근육종 및 Stevens-Johnson증후군과 동반된 중증 근무력증 1예)

  • Lee, Dong-Kuck;Kweon, Young-Mi
    • Annals of Clinical Neurophysiology
    • /
    • v.6 no.1
    • /
    • pp.43-47
    • /
    • 2004
  • We report a case of 36-year-old woman with myasthenia gravis (MG) combined with mediastinal leiomyosarcoma (LMS) and Stevens-Johnson syndrome (SJS). She was admitted to ICU with the symptoms of acute onset headache, diplopia, ptosis, dysphagia, general weakness, and respiratory difficulty for several days. Physical examination revealed tachypnea, decreased breath sounds and dullness to percussion in right lower chest. Neurologic examination showed ptosis, diplopia, decreased gag reflexes, and generalized proximal weakness. Laboratory studies revealed increased serum acetylcholine receptor antibodies and positive Tensilon test. Chest CT showed a huge mass in the right middle mediastium but no evidence of thymic enlargement. Mediastinal LMS was diagnosed by ultrasound-guided needle biopsy. The myasthenic symptoms were fluctuated in spite og intravenous immunoglobulin, plasmapheresis, and corticosteroid. During therapy, SJS developed. She died 4 months after the onset of the myasthenic symptoms despite the chemotherapy for LMS.

  • PDF

Approach to Method of Process Failure Mode and Effect Analysis for Construction Industry (건설업에서의 시공FMEA적용 방안 연구)

  • Kim Yoon-Sung
    • Proceedings of the Korean Institute Of Construction Engineering and Management
    • /
    • autumn
    • /
    • pp.271-274
    • /
    • 2002
  • The aim of FMEA method which is already generalized in the industry engineering is to grasp a possibility that defect forms will appear. And it is a means of prevention step to let person remove obstacles which have an influence on customers beforehand in order. The two parts of FMEA are Design FMEA which we prepare in an early stage and Process FMEA which we prepare in time previous to mass production. This Study apply Process FMEA to execution fields of the construction industry.

  • PDF

Microscopic Modeling of Creep Behavior for Soils (지반 크리프 거동의 미시학적 모델링)

  • Kim Dae-Kyu
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.7 no.3
    • /
    • pp.409-413
    • /
    • 2006
  • The accumulated deformation due to the undrained creep causes the general stability problem for the overall soil mass. In this study, the time-dependent constitutive equation, into which a damage law, modified cam clay model, and Perzyna's generalized viscous theory were incorporated, was derived microscopically. The model prediction agreed well with the experimental result including the case of the undrained creep rupture.

  • PDF

Explicit integration algorithm for fully flexible unit cell simulation with recursive thermostat chains (순환적으로 결합되는 정온기들을 갖는 $N{\sigma}T$ 분자동역학 전산모사에 적용한 외연적 적분기법)

  • Jung, Kwang-Sub;Cho, Maeng-Hyo
    • Proceedings of the KSME Conference
    • /
    • 2007.05a
    • /
    • pp.512-517
    • /
    • 2007
  • In the previous development of the recursive thermostat chained fully flexible cell molecular dynamics simulation, implicit time integration method such as generalized leapfrog integration is used. The implicit algorithm is very much complicated and not easy to show time reversibility because it is solved by the nonlinear iterative procedure. Thus we develop simple, explicit symplectic time integration formula for the recursive thermostat chained fully flexible unit cell simulation. Uniaxial tension test is performed to verify the present explicit algorithm. We check that the present simulation satisfies the ergodic hypothesis for various values of fictitious mass and coefficient of multiple thermostat system. The proposed method should be helpful to predict mechanical and thermal behavior of nano-scale structure.

  • PDF

Giant Cavernous Malformation : A Case Report and Review of the Literature

  • Son, Dong-Wuk;Lee, Sang-Weon;Choi, Chang-Hwa
    • Journal of Korean Neurosurgical Society
    • /
    • v.43 no.4
    • /
    • pp.198-200
    • /
    • 2008
  • Giant cavernous malformations (GCMs) occur very rarely and little has been reported about their clinical characteristics. The authors present a case of a 20-year-old woman with a GCM. She was referred due to two episodes of generalized seizure. Computed tomography and magnetic resonance image demonstrated a heterogeneous multi-cystic lesion of $7\times5\times5$ cm size in the left frontal lobe and basal ganglia, and enhancing vascular structure abutting medial portion of the mass. These fingings suggested a diagnosis of GCM accompanying venous angioma. After left frontal craniotomy, transcortical approach was done. Total removal was accomplished and the postoperative course was uneventful. GCMs do not seem differ clinically, surgically or histopathologically from small cavernous angiomas, but imaging appearance of GCMs may be variable. The clinical, radiological feature and management of GCMs are described based on pertinent literature review.