노년 청각손상자와 청각장애의 삶의 질 관련성 연구

劉俊榮,張勝成 대구대학교 특수교육재활과학연구소 2006 再活科學硏究 Vol.24 No.2

The hearing impairment happened extensively in the elderly and often resulted in the hearing handicap. A lot of study confused the hearing impairment with the hearing handicap and replaced the score of quality of life by the hearing handicap score to calculate the quality adjusted life years and analyzed the cost-utility of aural rehabilitation. In this study, the confusion of hearing impairment and hearing handicap was clarified, and the relevance between hearing handicap and quality of life was explored in order to examine the fitness of replacing the score of quality of life by the hearing handicap score. The result of this study indicated that the correlation between the hearing handicap and the quality of life. The fitness of correlating model of the hearing handicap and the quality of life was not accepted. So, it was not suggested that replacing the score of quality of life by the hearing handicap score. The inventory of disease-specific quality of life should be developed. Secondly, the poor fitness of correlating model of the hearing handicap and the quality of life could be resulted from the other variables that shall be included in the model. It was proposed to include relevant variables into the model in the future. 청각손상은 노년기에 광범위하게 발생하는 문제이다. 심각한 청각장애를 자주 일으킨다. 많은 연구는 청각손상과 청각장애를 혼돈하는 것 뿐 만아니라 자주 청각장애 검목표의 득점으로 피실험자의 생활 품질을 대표한다. 심지어 청각장애 검목표의 득점으로 생활 품질 조정년을 계산한다. 이것으로 청각 재활의 성공 효과를 분석한다. 본 연구는 청각 손상과 청각장애의 다른 점을 밝히는 것 외에도 주요 목적은 청각장애와 생활 품질의 관련성을 이해하고자 하는 것이다. 이것으로 청각장애 검목표를 생활 품질을 삼는 정당성을 관찰한다. 연구결과에 나타나는 것은 청각 표현과 생활품질의 관련성은 높지 않은 결과를 얻었다. 이 두 가지의 관련 양식은 일반화 하기는 제한점을 갖는다. 그래서 이론적 개념에서 청각 표현과 생활품질은 각자 다른 내용을 갖추고 있다. 자료 통계의 분석 결과도 이 두 가지의 관련 양식에 대해서 유의한 결과를 얻지 못했다. 그래서 청각표현 능력으로 피실험자의 생활 품질을 대신할 수 없다. 마땅히 청각 손상자에게 맞는 적합한 생활 품질 설문지를 발행해야한다. 그 다음에 두 가지의 관련 양식의 관련도 적다. 아마도 청각 손상자의 청각 표현과 생활 품질 간에는 많은 변인의 영향이 존재하기 때문이다. 미래의 연구는 더 많은 상관 관련 인소를 귀납해서 이 이론구조를 검증해야한다는 것을 건의한다.

The Clinical Observation of Inflammation Theory for Depression: The Initiative of the Formosa Long COVID Multicenter Study (FOCuS)

Shu-Tsen Liu(Shu-Tsen Liu),Sheng-Che Lin(Sheng-Che Lin),Jane Pei-Chen Chang(Jane Pei-Chen Chang),Kai-Jie Yang(Kai-Jie Yang),Che-Sheng Chu(Che-Sheng Chu),Chia-Chun Yang(Chia-Chun Yang),Chih-Sung Liang( 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.1

There is growing evidence that the coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is associated with increased risks of psychiatric sequelae. Depression, anxiety, cognitive impairments, sleep disturbance, and fatigue during and after the acute phase of COVID-19 are prevalent, long-lasting, and exerting negative consequences on well-being and imposing a huge burden on healthcare systems and society. This current review presented timely updates of clinical research findings, particularly focusing on the pathogenetic mechanisms underlying the neuropsychiatric sequelae, and identified potential key targets for developing effective treatment strategies for long COVID. In addition, we introduced the Formosa Long COVID Multicenter Study (FOCuS), which aims to apply the inflammation theory to the pathogenesis and the psychosocial and nutrition treatments of post-COVID depression and anxiety.

The role of HABTC’s hydroxamate and dithiocarbamate groups in chalcopyrite flotation

Sheng Liu,Guangyi Liu,Hong Zhong,Xianglin Yang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.52 No.-

In this paper, S-[(2-hydroxyamino)-2-oxoethyl]-N,N-dibutyl-dithiocarbamate (HABTC) wasfirst synthesizedand characterized by 1H NMR, 13C NMR and FTIR. The role of HABTC’s hydroxamate anddithiocarbamate groups in chalcopyriteflotation was evaluated by micro-flotation, bench-scaleflotation,adsorption experiments, zeta potential and X-ray photoelectron spectroscopy (XPS). HABTC exhibitedexcellent affinity to chalcopyrite particles under pH 6–10 and achieved superiorflotation recovery ofcopper minerals in comparison with sodium isobutyl xanthate (SIBX). The adsorption thermodynamicsand kinetics elucidated that HABTC adsorption on to chalcopyrite surfaces was a spontaneouslyendothermic chemisorption process. Zeta potential demonstrated that HABTC might chemisorb on to thepositive sites of chalcopyrite surfaces. XPS spectra further revealed that both dithiocarbamate andhydroxamate groups of HABTC anchored on chalcopyrite surfaces through Cu(II)-hydroxamate and Cu(I)-dithiocarbamate configurations, resulting in an enhanced collecting power of HABTC to chalcopyriteparticles.

Starving Aphelinus asychis negatively affects host feeding and parasitism on Myzus persicae

Sheng-Yin Wang,Yi Feng,Ning-Ning Liang,Rui Tang,Yan-Hong Liu,Da Yu Zhang,Tong-Xian Liu 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.2

Aphelinus asychis (Walker) is an effective biological control agent for many species of aphids found on various crops. To provide strategies for releasing these parasitoids into a crop ecosystem, the effects of a short-duration starvation experiment on A. asychis were measured under laboratory conditions using Myzus persicae (Sulzer) as the host on cabbage and chili pepper plants. The survival rate of starved A. asychis female adults decreased sharply as the starving time increased, and the longevity of the starved parasitoids also decreased significantly. The number of aphids killed by the parasitoids decreased gradually with the extended duration of starvation. In addition, the number of aphids on chili peppers and cabbages killed by starved A. asychis females over their lifespan was significantly lower than that in the control group. Our results indicated that a short period of starvation might not cause significantly negative effects on the parasitoids and may be beneficial for the control of M. persicae at low densities after 1 day; however, starvation for>1 day seriously affected the performance of A. asychis females over their entire lifespan. The parasitoids performed similarly when aphids were fed chili pepper or cabbage plants.

Overlapping Stents-Assisted Coiling for Vertebral Artery Dissecting Aneurysm : LVIS Stent within Neuroform EZ Stent

Liu, Xing-Long,Wang, Bin,Zhao, Lin-Bo,Jia, Zhen-Yu,Shi, Hai-Bin,Liu, Sheng The Korean Neurosurgical Society 2022 Journal of Korean neurosurgical society Vol.65 No.4

Objective : To evaluate the safety and efficacy of an overlapped stenting-assisted coiling technique in treating vertebral artery dissecting aneurysm (VADA) via Low-profile Visualized Intraluminal Support (LVIS) stent-within-Neuroform EZ stent. Methods : From January 2017 to June 2019, 18 consecutive patients with VADAs (ruptured : unruptured=5 : 13) were treated with the overlapping stents assisted-coiling technique in our center. The overlapping manner was a Neuroform EZ stent being deployed first, followed by LVIS stents placement using the 'shelf' technique. The patients' clinical characteristics, technical feasibility and safety, and immediate and follow-up angiographic results were retrospectively reviewed. Results : Seventeen (94.4%) procedures were technically successful with an exact deployment of the stents and patent parent or perforator arteries. The immediate angiographies after procedure confirmed Raymond class I, II, and III occlusion of VADAs were in 12 (66.7%), two (11.1%), and four cases (22.2%), respectively. Post-procedural complications developed in one patient (5.6%) with minor brainstem infarctions, which resulted from an in-stent thrombosis during the procedure. Angiographic follow-up at 5.7 months (range 3 to 9 months) demonstrated Raymond class I and II occlusion were in all cases (100%). The modified Rankin Scale scores at 21.3 months (range 15 to 42 months) 0-2 in 17 cases (94.4%) and three in one case (5.6%). Conclusion : Overlapping stents via LVIS stent-within-Neuroform EZ stent combined with coiling is safe and effective for patients with VADA in the midterm results.

A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields

Liu, Tie,Li, Pak Shing,Juvela, Mika,Kim, Kee-Tae,Evans II, Neal J.,Francesco, James Di,Liu, Sheng-Yuan,Yuan, Jinghua,Tatematsu, Ken’ichi,Zhang, Qizhou,Ward-Thompson, Derek,Fuller, Gary,Goldsmith, Paul American Astronomical Society 2018 The Astrophysical journal Vol.859 No.2

<P>Magnetic field plays a crucial role in shaping molecular clouds and regulating star formation, yet the complete information on the magnetic field is not well constrained owing to the limitations in observations. We study the magnetic field in the massive infrared dark cloud G035.39-00.33 from dust continuum polarization observations at 850 mu m with SCUBA-2/POL-2 at JCMT for the first time. The magnetic field tends to be perpendicular to the densest part of the main filament (F-M), whereas it has a less defined relative orientation in the rest of the structure, where it tends to be parallel to some diffuse regions. A mean plane-of-the-sky magnetic field strength of similar to 50 mu G for F-M is obtained using the Davis-Chandrasekhar-Fermi method. Based on (CO)-C-13 (1-0) line observations, we suggest a formation scenario of F-M due to large-scale (similar to 10 pc) cloud-cloud collision. Using additional NH3 line data, we estimate that F-M will be gravitationally unstable if it is only supported by thermal pressure and turbulence. The northern part of F-M, however, can be stabilized by a modest additional support from the local magnetic field. The middle and southern parts of F-M are likely unstable even if the magnetic field support is taken into account. We claim that the clumps in F-M may be supported by turbulence and magnetic fields against gravitational collapse. Finally, we identified for the first time a massive (similar to 200 M-circle dot, collapsing starless clump candidate, 'c8,' in G035.39-00.33. The magnetic field surrounding 'c8' is likely pinched, hinting at an accretion flow along the filament.</P>

Capital flight from China: Estimates and determinants

Sheng Liu,Choonwon Park 한양대학교 경제연구소 2023 JOURNAL OF ECONOMIC RESEARCH Vol.28 No.2

In this paper, we tried to estimate the size of China’s capital flight by adjusting the World Bank’s calculation method, and investigated the determinants of China’s capital flight using our estimates. We found that the size of China’s capital flight has steadily increased during the analysis period from 1997 to 2020 while the ratio of capital flight to nominal GDP, excluding price factors, showed a decreasing trend. The results of empirical analysis on the determinants of capital flight using a VAR model showed that the US-China interest rate differential and expected returns on overseas investment had the greatest impact on China’s capital flight, and that inflation was a short-term capital inflow factor and a long-term capital outflow factor. It was also confirmed that China’s anti-corruption campaign had a positive correlation with the capital flight.

Modified adaptive complementary sliding mode control for the longitudinal motion stabilization of the fully-submerged hydrofoil craft

Sheng Liu,Hongmin Niu,Lanyong Zhang,Changkui Xu 대한조선학회 2019 International Journal of Naval Architecture and Oc Vol.11 No.1

This paper presents a Modified Adaptive Complementary Sliding Mode Control (MACSMC) system for the longitudinal motion control of the Fully-Submerged Hydrofoil Craft (FSHC) in the presence of time varying disturbance and uncertain perturbations. The nonlinear disturbance observer is designed with less conservatism that only boundedness of the derivative of the disturbance is required. Then, a complementary sliding mode control system combined with adaptive law is designed to reduce the bound of stabilization error with fast convergence. In particularly, the modified complementary sliding mode surface which contains the estimation of the disturbance can reduce the switching gain and retain the normal performance of the system. Moreover, a hyperbolic tangent function contained in the control law is utilized to attenuate the chattering of the actuator. The global asymptotic stability of the closed-loop system is demonstrated utilizing the Lyapunov stability theory. Ultimately, the simulation results show the effectiveness of the proposed approach.

Has the RMB expanded the Efficient Frontier of the SDR?

( Sheng Liu ),( Choon-won Park ) 한양대학교 경제연구소 2021 JOURNAL OF ECONOMIC RESEARCH Vol.26 No.2

In November 2015, the IMF decided to include the Chinese yuan, which is also called Renminbi (RMB), in the SDR basket currency, and it was implemented from 1 October 2016. The purpose of this study is to analyze whether the SDR denominated bond has become more profitable by adding the RMB into the SDR currency basket. Interest rate and foreign exchange rate data of major currencies such as USD, EUR, GBP, JPY, CNY were used, and the Sharpe ratio comparison and spanning test show that inclusion of the RMB expands the efficient frontier of the SDR. This result is due to the high interest rate of RMB-denominated bonds and the higher foreign exchange gains from the RMB. As China still maintains comparatively high interest rates, the effect of SDR’s efficient frontier expansion by including RMB is likely to continue for some time

The TOP-SCOPE Survey of <i>Planck</i> Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17

Liu, Tie,Kim, Kee-Tae,Juvela, Mika,Wang, Ke,Tatematsu, Ken’ichi,Francesco, James Di,Liu, Sheng-Yuan,Wu, Yuefang,Thompson, Mark,Fuller, Gary,Eden, David,Li, Di,Ristorcelli, I.,Kang, Sung-ju,Lin, Yuxin Published by the University of Chicago Press for t 2018 The Astrophysical journal Supplement series Vol.234 No.2

<P>The low dust temperatures (< 14 K) of Planck Galactic cold clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. 'TOP-SCOPE' is a joint survey program targeting similar to 2000 PGCCs in J = 1-0 transitions of CO isotopologues and similar to 1000 PGCCs in 850 mu m continuum emission. The objective of the 'TOP-SCOPE' survey and the joint surveys (SMT 10 m, KVN 21 m, and NRO 45 m) is to statistically study the initial conditions occurring during star formation and the evolution of molecular clouds, across a wide range of environments. The observations, data analysis, and example science cases for these surveys are introduced with an exemplar source, PGCC G26.53+0.17 (G26), which is a filamentary infrared dark cloud (IRDC). The total mass, length, and mean line mass (M/L) of the G26 filament are similar to 6200 M-circle dot, similar to 12 pc, and similar to 500 M-circle dot pc(-1), respectively. Ten massive clumps, including eight starless ones, are found along the filament. The most massive clump as a whole may still be in global collapse, while its denser part seems to be undergoing expansion owing to outflow feedback. The fragmentation in the G26 filament from cloud scale to clump scale is in agreement with gravitational fragmentation of an isothermal, nonmagnetized, and turbulent supported cylinder. A bimodal behavior in dust emissivity spectral index (beta) distribution is found in G26, suggesting grain growth along the filament. The G26 filament may be formed owing to large-scale compression flows evidenced by the temperature and velocity gradients across its natal cloud.</P>