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장성호,박승민,김성호,안상호,조윤우,안미옥 연세대학교의과대학 2004 Yonsei medical journal Vol.45 No.4
Ankle spasticity following brain injury leads to abnormal posture and joint contracture; making standing or walking impossible. This study investigates the efficacy of selective tibial neurotomy (STN) and intensive rehabilitation in a patient who suffered ankle spasticity after brain injury. This case describes a 37-year-old man whose traumatic brain injury (TBI) resulted in severe right ankle spasticity and contracture. He was unable to stand due to severe right ankle spasticity and contracture. Intensive rehabilitation and STN allowed him to walk without brace at 6 months and run at 12 months after STN. STN is an effective procedure to resolve localized spasticity of the ankle and it may be considered as a management strategy after local injection to alleviate ankle spasticity and/or contracture prior to orthopaedic surgery.
Somatotopic Arrangement and Location of the Corticospinal Tract in the Brainstem of the Human Brain
장성호 연세대학교의과대학 2011 Yonsei medical journal Vol.52 No.4
The corticospinal tract (CST) is the most important motor pathway in the human brain. Detailed knowledge of CST somatotopy is important in terms of rehabilitative management and invasive procedures for patients with brain injuries. In this study, I conducted a review of nine previous studies of the somatotopical location and arrangement at the brainstem in the human brain. The results of this review indicated that the hand and leg somatotopies of the CST are arranged medio-laterally in the mid to lateral portion of the cerebral peduncle, ventromedial-dorsolaterally in the pontine basis, and medio-laterally in the medullary pyramid. However, few diffusion tensor imaging (DTI) studies have been conducted on this topic, and only nine have been reported: midbrain (2 studies), pons (4 studies), and medulla (1 study). Therefore,further DTI studies should be conducted in order to expand the literature on this topic. In particular, research on midbrain and medulla should be encouraged.
장성호 한국동북아학회 2012 한국동북아논총 Vol.17 No.4
This study is begun from proposing a problem about what the continuous cyber violation is occurring frequently in the face of adopting a system, which passes the confirmation of real name and identification on the on-line and about the appearance of being sharply confronted still the pros and cons of surrounding internet real name. Accordingly, the online activity of an individual and group needs to be regulated on internet. For this, the aim is to seek a plan for possibly developing the current internet real-name system based on the agreement of the largest number through discussion about which value needs to be collected. As a result of research, the regulation for controlling the current internet real-name system or future internet dysfunction needs to be changed a sight and to be continuously improved institutionally in some aspects. Firstly, it is a problem about how the balance will be pursued between national regulation and self-regulation. Secondly, it is a problem about the appearance of likely forming more sound and responsible cyber culture in relation to the self-regulation dimension. And, finally, it is what needs to push ahead with effective ‘national regulation’ based on reflecting on a role of a country in relation to internet regulation. This study is considered that the core of pursuing harmony and balance in national regulation and self-regulation even among these things just relies upon ‘effective nation.’ It can be said to be needed a role of ‘effective nation,’ which seeks a plan for proceeding with settling self-regulation while forming sound cyber culture from long-term and future-oriented sight rather than pointing to symptomatic treatment-based intervention and regulation on internet dysfunction. 오늘날은 다원성과 창의성, 자율성이 강조되는 지식정보화 시대로 온라인 여론형성 지형의 변화로 인한 개개인의 역량에 의해 연결되는 네트워크 시대이다. PC통신과 인터넷 웹진시대, 포털커뮤니티 시대를 거쳐 1인 미디어의 디지털시대가 도래했다. 그러나 소통의 과격화로 인한 온라인상에서의 지속적인 사이버 폭력 사태가 빈발하고 있으며, 여전히 다양한 규제를 둘러싼 찬반양론이 첨예하게 대립하고 있는가에 대한 문제제기에서 출발한다. 따라서 인터넷 상에서 개인과 집단의 온라인 활동이 어떻게 규율되어 왔고, 이를 위해 어떤 가치의 수렴이 이루어져야 하는가에 대한 논의를 통해 최대다수의 합의에 기반하여 이를 발전시킬 수 있는 방안을 모색하고자 한다. 향후 인터넷과 SNS 등의 뉴미디어의 역기능을 제어하기 위한 규제는 몇 가지 측면에서 시각의 전환과 지속적인 제도적 개선이 이루어져야 한다. 본 연구는 이 중에서도 국가규제와 자율규제의 조화와 균형을 추구하는 핵심은 바로 ‘효과적인 국가’에 있다고 본다. 인터넷 규제는 그 미디어 특성으로 인해 실제로 불가능하다고 볼 때, 국가의 개입과 규제라는 강제적인 측면보다는 의사결정의 합리성을 위한 국가의 개입을 최소화하고 이용자들의 이용문화를 개선하고 혁신하기 위한 지원 조직과 전문인력을 양성해야 할 필요성이 있다고 할 수 있다. 즉 온라인 공간의 갈등을 해소할 수 있는 합리적인 방안을 찾아야 한다. 이제는 기존과는 다른 소통과 인식방법이 필요하다. 또한 인터넷의 역기능에 대한 대증요법적 개입과 규제를 지향하기보다 장기적이고 미래지향적인 시각에서 토론문화를 통한 건전한 사이버 문화를 조성하면서 자율규제를 정착시켜 가기 위한 방안을 모색하는 ‘효과적인 국가’의 역할이 필요하다고 하겠다.
장성호,김성영,이철위,임지선 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Ni-Mn based gradient type cathode for lithium ion battery was prepared by CSTR(Continuous Stirred Tank Reactor) reaction. For high capacity and temperature stability, V<sub>2</sub>O<sub>5</sub> was coated on the surface of prepared cathode. The resultant cathode was characterized through PSA(Particle Size Analysis), FE-SEM(Field Emission-Scanning Electron Microscopy) and XRD(X-ray Diffraction). In addition, the capacity and cycle/ temperature stability were studied and the reaction mechanism of V<sub>2</sub>O<sub>5</sub> was proposed based on relation of cathode characteristics and battery performance.
장성호,여상석 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.3
Purpose: The elucidation of thalamocortical connections between the mediodorsal nucleus (MD) of thalamus and the prefrontal cortex (PFC) is important in the clinicalfields of neurorehabilitation and psychiatry. However, little is known about these connections in human brain. We attempted to identify and investigate the anatomicalcharacteristics of the thalamocortical connection between MD and PFC in human brain using diffusion tensor tractography (DTT). Materials and Methods:Thirty-two healthy volunteers were recruited for this study. Diffusion tensor images were scanned using a 1.5-T. A seed region of interest was placed at the MD of the thalamus on coronal images, and target regions of interest were placed on the dorsolateral prefrontal cortex (DLPFC), the ventrolateral prefrontal cortex (VLPFC), and the orbitofrontal cortex (OFC), respectively. The three thalamocorticalconnections found were reconstructed using Functional Magnetic Resonance Imaging of the Brain (FMRIB) software. Results: The three thalamocortical connectionswere arranged in subcortical white matter in the following order from upperto lower levels: the DLPFC, the VLPFC, and the OFC. In terms of fractional anisotropy and mean diffusivity values, no significant differences were observed between the DLPFC, VLPFC and OFC (p>0.05). In contrast, the OFC tract volumewas higher than those of the DLPFC and the VLPFC (p<0.05). Conclusion: Three thalamocortical connections were reconstructed between MD and PFCs in human brain using DTT. We believe that the results of this study would be helpful to clinicians in treating frontal network syndrome and psychiatric diseases.
장성호,구삼옥,박주원,Chang, SungHo,Koo, SamOk,Park, JuWon 항공우주시스템공학회 2008 항공우주시스템공학회지 Vol.2 No.1
A compact, light-weight, integrated flight control computer(IFCC) for small unmanned autonomous vehicles is developed. Its design objective is to produce an all in one avionics system which includes the navigation sensor, data link, attitude sensors and air data sensors. The initial phase of ground and flight tests are performed to verify the prototype IFCC, showing promising results. The high potential of its application is expected.
장성호,양승빈,정병길,이원기,SSivakumar,정은상,정태화 한국폐기물자원순환학회 2017 한국폐기물자원순환학회지 Vol.34 No.6
Soluble cutting fluids (SCFs) have been used in metal machining processes to improve the quality of metal processing equipment and products in modern society. Because the characteristics among metal machining processes differ, various types of cutting fluids are manufactured to enhance the cutting efficiency of different metals. Although SCFs are useful and essential materials, particular treatment is required attributable to the high concentration of nitrogen materials and chemical oxygen demand (COD). In this study, the removal efficiency of total nitrogen (T-N) contained in SCFs was analyzed using electrochemical treatment. The electrode was made of 316 stainless steel, which had been perforated to prevent an imbalanced sample concentration in the reactor. Cathodic and anodic electrodes were alternately inserted into an acrylic reactor. The removal efficiency of T-N in SCFs using 40 A/m2, 60 A/m2, and 80 A/m2 current density, was 48.2%, 61.5% and 69.3%, respectively. The removal efficiency of T-N in SCFs with the addition of 0, 5 mM, and 10 mM NaCl was 69.3%, 74.6%, 77.6%, respectively.