The Effect of Arm Movements in the during Standing Position on Lower Limb Global Synkinesis and Balance in Stroke Patients

YoungJun Moon,Daekeun Jeong,Jeongil Kang 국제물리치료연구학회 2019 Journal of International Academy of Physical Ther Vol.10 No.3

Background: Stroke patients require arm movement exercising for various stimulations in standing position for various stimulations rather than in a sitting position because they require integrated skillful movements, such as stretching, holding, and controlling. Objective: This study was conducted to provide foundational clinical data about lower limb global synkinesis in stroke patients using arm movements in a standing position. Design: Randomized controlled trial. Methods: The subjects were divided into a control group (n = 10) and an experimental group (n = 10), and a pre-test was conducted to evaluate leg global synkinesis (GS) and balance. Intervention method is stretching an arm to hold a ball, repeating supination and pronation of the hand only while maintaining the arm extended as much as possible, repeating shoulder abduction and adduction while holding the pegboard. This was followed by a three-week intervention during which re-measurement was conducted in the same way as was done for the pre-test. Results: The control group showed a significant difference in GS and balance during plantar flexion (p<.05), and the experimental group showed a significant difference in GS and balance during all movements (p<.05, p<.01, respectively). There was a significant difference in GS and balance between the two groups during dorsiflexion (p<.05, p<.01, respectively). Conclusion: The findings demonstrate that human arm movements in a standing position can reduce GS in the affected limb, and balance can be improved by stimulating the surrounding tissues of the affected limb and changing them positively.

The Effect of Arm Movements in the during Standing Position on Lower Limb Global Synkinesis and Balance in Stroke Patients

Moon, YoungJun,Jeong, DaeKeun,Kang, Jeongil International Academy of Physical Therapy Research 2019 Journal of International Academy of Physical Ther Vol.10 No.3

Background: Stroke patients require arm movement exercising for various stimulations in standing position for various stimulations rather than in a sitting position because they require integrated skillful movements, such as stretching, holding, and controlling. Objective: This study was conducted to provide foundational clinical data about lower limb global synkinesis in stroke patients using arm movements in a standing position. Design: Randomized controlled trial. Methods: The subjects were divided into a control group (n = 10) and an experimental group (n = 10), and a pre-test was conducted to evaluate leg global synkinesis (GS) and balance. Intervention method is stretching an arm to hold a ball, repeating supination and pronation of the hand only while maintaining the arm extended as much as possible, repeating shoulder abduction and adduction while holding the pegboard. This was followed by a three-week intervention during which re-measurement was conducted in the same way as was done for the pre-test. Results: The control group showed a significant difference in GS and balance during plantar flexion (p<.05), and the experimental group showed a significant difference in GS and balance during all movements (p<.05, p<.01, respectively). There was a significant difference in GS and balance between the two groups during dorsiflexion (p<.05, p<.01, respectively). Conclusion: The findings demonstrate that human arm movements in a standing position can reduce GS in the affected limb, and balance can be improved by stimulating the surrounding tissues of the affected limb and changing them positively.

TD-SCDMA망과 WLAN망간의 소프트웨어 핸드오버 방안 연구

문영준(Youngjun Moon),유인태(Intae Ryoo) 한국정보기술학회 2009 Proceedings of KIIT Conference Vol.2009 No.-

최근 3G와 WiBro, WLAN 등의 무선 네트워크 연동이 중요한 이슈로 부각되고 있다. 3G-WLAN 연동망이 구성될 경우 사용자는 WLAN 서비스 지역에서 고속의 데이터 서비스를 저렴하게 이용할 수 있다. 이를 위해 본 논문에서는 멀티모드 단말을 설계 및 구현하고 서버와 클라이언트의 소프트웨어를 변경하여 이종망에서 핸드오버를 지원할 수 있는 방안을 제시한다. Recently many researchers are focusing on the interworking among 3G, WiBro and WLAN. Fast network can be provided cheaply for users by interworking between 3G-WLAN. In this paper, we design the multimode mobile device and propose software handover to modify the server's and client's software in heterogeneous networks.

Denoise of Astronomical Images with Deep Learning

Youngjun Park,Yun-Young Choi,Yong-Jae Moon,Eunsu Park,Beomdu Lim,Taeyoung Kim 한국천문학회 2019 天文學會報 Vol.44 No.1

Practical dynamic matrix control for thermal power plant coordinated control

Moon, Un-Chul,Lee, Youngjun,Lee, Kwang Y. Pergamon Press 2018 Control engineering practice Vol.71 No.-

<P><B>Abstract</B></P> <P>This paper proposes three practical strategies for the coordinated control (CC) of a thermal power plant using dynamic matrix control (DMC) that can be directly applied to industrial power plants. The three strategies are the replacement of conventional CC using DMC, the inclusion of disturbance variables, and a supplementary reference correction of the conventional CC. The performance during wide range operation of the three DMC–CCs is compared and discussed with the simulation results of a large-scale power plant model.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Practical coordinated controls for thermal power plant are proposed. </LI> <LI> Three different structures using Dynamic Matrix Control are compared. </LI> <LI> Three Dynamic Matrix Controls show effective than conventional control. </LI> <LI> Measured disturbance using local control action shows better performance. </LI> </UL> </P>

Supplementary Control of Conventional Coordinated Control for 1000 ㎿ Ultra-supercritical Thermal Power Plant using Dynamic Matrix Control

Youngjun Lee,Euiyeon Yoo,Taehyun Lee,Un-Chul Moon 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.1

This paper proposes supplementary control of conventional coordinated control of a power plant which directly affects network frequency. The supplementary control with dynamic matrix control is applied for 1000 ㎿ power plant with ultra-supercritical (USC) once-through boiler. The supplementary control signal is added to the boiler feedforward signal in the existing coordinated control logic. Therefore, it is a very practical structure that can maintain the existing multi-loop control system. This supplementary controller uses the step response model for the power plant system, and on-line optimization is performed at every sampling step. The simulation results demonstrate the effectiveness of the proposed supplementary control in a wide operating range of a practical 1000 ㎿ USC power plant simulator. These results can contribute the stable operation of power system frequency.

Distinct hydrophobic–hydrophilic dual interactions occurring in the clathrate hydrates of 3,3-dimethyl-1-butanol with help gases

Moon, Seokyoon,Park, Sung O.,Ahn, Yun-Ho,Kim, Heejoong,Shin, Eunhye,Hong, Sujin,Lee, Yunseok,Kwak, Sang Kyu,Park, Youngjune Elsevier 2018 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.348 No.-

<P><B>Abstract</B></P> <P>To unlock the potential of clathrates hydrate for versatile applications in energy and environmental application such as energy storage, gas separation, and novel functional materials, profound understanding of their hidden nature must be secured. In this study, we focused on the complex host–guest and heterogeneous guest–guest interactions occurring on the sH hydrates of 3,3-dimethyl-1-butanol with help gases of CH<SUB>4</SUB> or CO<SUB>2</SUB>. The density functional theory calculations and spectroscopic experimental analyses showed that the dynamics of the large 3,3-dimethyl-1-butanol guest molecule as well as the host water frameworks of sH hydrate were significantly influenced by the type of gaseous co-guest molecules via complex host–guest and/or guest–guest interactions. The flexible hydrogen-bonded water framework underwent contraction or elongation in the O:H–O hydrogen and O–H polar-covalent bonds induced by distinct occupation patterns of the co-guest help gases, and it was observed that, depending on the type, the co-guest help gases triggered the transformation of torsional configuration of the hydrophobic moieties of the large 3,3-dimethyl-1-butanol guest molecule while the hydrophilic part was incorporated into the host water framework.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The complex host–guest interactions occurring on sH hydrates was investigated <I>via</I> experimental and DFT calculation. </LI> <LI> The dynamics of DMB guest molecules were significantly influenced by the type of gaseous co-guest molecules. </LI> <LI> The contraction and/or elongation patterns of the intermolecular hydrogen bond were examined. </LI> <LI> The co-guest help gases evoked a discrete torsional configuration of the DMB molecule. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Secondary gaseous guest-dependent structures of binary neopentyl alcohol hydrates and their tuning behavior for potential application to CO₂ capture

Moon, Seokyoon,Ahn, Yun-Ho,Kim, Heejoong,Hong, Sujin,Koh, Dong-Yeun,Park, Youngjune Elsevier 2017 Chemical engineering journal Vol.330 No.-

<P><B>Abstract</B></P> <P>Clathrate hydrates, commonly called gas hydrates, are non-stoichiometric inclusion compounds with tunable gas storage and separation capabilities. Various efforts have been made to apply these hydrates to energy and environmental fields including energy storage and greenhouse gas capture and separation technologies. Although the unary use of gaseous guest molecules such as methane, carbon dioxide, and nitrogen is generally expected to achieve maximal storage capacity by filling the guest in both small and large cages of each structure, introducing additional liquid guest molecules into the clathrate hydrates could be a more feasible option from an engineering perspective, since such liquid guest molecules often play a critical role in stabilization of the clathrate hydrate by shifting the thermodynamic phase equilibria to practically implementable milder pressure and temperature conditions. Here, we focus on the binary neopentyl alcohol clathrate hydrates with gaseous guest molecules, including carbon dioxide, methane, and nitrogen, to provide a better understanding of the complex nature of the host–guest interactions occurring in the clathrate hydrates. Thermodynamic <I>P</I> – <I>T</I> phase equilibria were measured, and spectroscopic analyses were performed employing HRPD, Raman, and NMR spectrometers. The results revealed that the NPA guest molecule forms sI or sII hydrate depending on the binary gaseous guest molecules. This paper also reports for the first time that the composition of CO<SUB>2</SUB> guest molecules may be ‘tuned’ within the cages of sI hydrate of NPA.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The structures of binary NPA hydrates depend on the secondary gaseous guest. </LI> <LI> Binary (NPA+CO<SUB>2</SUB>) hydrate is investigated for application to CO<SUB>2</SUB> capture. </LI> <LI> The inclusion of NPA shifts the phase equilibrium boundary to a stable region. </LI> <LI> The CO<SUB>2</SUB> guest distribution is tuned by the NPA composition. </LI> </UL> </P>

한국형발사체 액체로켓엔진의 클러스터링 단열

김영준(YoungJun Kim),문윤완(YoonWan Moon) 한국추진공학회 2021 한국추진공학회 학술대회논문집 Vol.2021 No.11

Symbiosis of Effective Microorganisms

Leesl MOON,KiSeok YOON,SungUng HEO,YoungJun KIM,YoonMo KOO 한국생물공학회 2009 한국생물공학회 학술대회 Vol.2009 No.10