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End-to-end Service Assurance in 5G Crosshaul Networks
Che-Chun Teng,Mei-Chun Chen,Min-Han Hung,Hong-Jie Chen 한국통신학회 2020 한국통신학회 APNOMS Vol.2020 No.09
More and more telecom operators around the world began to build and to deploy fifth-generation (5G) mobile networks. With the advent of 5G service scenarios, it brings new challenges and increases the complexity of management. To deliver good quality of experience of these 5G applications for customers, service assurance is important. In this paper, we propose an end-to-end service assurance solution for 5G crosshaul networks. The 5G crosshaul network architecture consists of fronthaul, midhaul, and backhaul networks. Our solution deployed in 5G trial network in Chunghwa Telecom in Taiwan. The solution focus on slicing service assurance and synchronization monitoring. Besides, our solution adjusts most of network management in the operation support system (OSS) to apply to 5G crosshaul network. Our goal is to provide stable 5G transport network and to assure quality of experience for customers.
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.
( Ming-Che Chen ),( Chih-Chun Hsieh ),( Weite Wu ) 대한금속재료학회 ( 구 대한금속학회 ) 2007 METALS AND MATERIALS International Vol.13 No.3
In this study, the Accumulative Roll Bonding (ARB) process was used with a snap-stack procedure to reduplicate an Al (1100)/Mg (AZ31) alloy. Samples underwent four rolling and stacking cycles four times, which produced a 24-layer structure. The ARB process creates a multilayer compound between Al/Mg layers with excellent bonding characteristics. The excellent bonding characteristics were due to atomic diffusion. Diffusion couples between Al and Mg were investigated to study the composition of the formation in the Al-Mg system. Layers of intermetallic compound (IMC) Al3Mg2 and Al12Mg17 were observed. The composition-depth curves of the diffusion zone were determined by electron microprobe analyses of the IMCs.
A Persistence Probability Analysis in Major Financial Indices
Hsen-Che Tseng,I-Chun Chen,Hung-Jung Chen 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.1I
We analyzed twenty world stock market indices and compared the persistence properties among these countries. Two methods were used in the analyses: (1) the price-price correlation analysis technique and (2) the persistence analysis technique. Our studies are based on numerical estimates of the persistence exponent p and the Hurst exponent H2. The relation p = 1 . H2 among these countries is also discussed.g
( Chih Chun Hsieh ),( Tao Chih Chang ),( Dong Yih Lin ),( Ming Che Chen ),( Wei Te Wu ) 대한금속재료학회 ( 구 대한금속학회 ) 2007 METALS AND MATERIALS International Vol.13 No.5
The purpose of this study is to investigate the precipitation characteristics of σ phase in the fusion zone of stainless steel welds at various welding passes during a tungsten arc welding (GTAW) process. The morphology, quantity, and chemical composition of the δ-ferrite and σ phase were analyzed using optical microscopy (OM), a ferritscope (FS), a X-ray diffractometer (XRD), scanning electron microscopy (SEM), an electron probe micro-analyzer (EPMA), and a wavelength dispersive spectrometer (WDS), respectively. Massive δ-ferrite was observed in the fusion zone of the first pass welds during welding of dissimilar stainless steels. The σ phase precipitated at the inner δ-ferrite particles and decreased δ-ferrite content during the third pass welding. The σ and δ phases can be stabilized by Si element, which promoted the phase transformation of δ→σ + γ2 in the fusion zone of the third pass welds. It was found that the σ phase was a Fe-Cr-Si intermetallic compound found in the fusion zone of the third pass welds during multi-pass welding.
Molecular dynamics studies of interaction between hydrogenand carbon nano-carriers
Wang, Yun-Che,Wu, Chun-Yi,Chen, Chi,Yang, Ding-Shen Techno-Press 2013 Interaction and multiscale mechanics Vol.6 No.3
In this work, quantum molecular dynamics simulations (QMD) are preformed to study the hydrogen molecules in three types of carbon nanostructures, $C_{60}$ fullerene, (5,5) and (9,0) carbon nanotubes and graphene layers. Interactions between hydrogen and the nanostructures is of importance to understand hydrogen storage for the development of hydrogen economy. The QMD method overcomes the difficulties with empirical interatomic potentials to model the interaction among hydrogen and carbon atoms in the confined geometry. In QMD, the interatomic forces are calculated by solving the Schrodinger's equation with the density functional theory (DFT) formulation, and the positions of the atomic nucleus are calculated with the Newton's second law in accordance with the Born-Oppenheimer approximation. It is found that the number of hydrogen atoms that is less than 58 can be stored in the $C_{60}$ fullerene. With larger carbon fullerenes, more hydrogen may be stored. For hydrogen molecules passing though the fullerene, a particular orientation is required to obtain least energy barrier. For carbon nanotubes and graphene, adsorption may adhere hydrogen atoms to carbon atoms. In addition, hydrogen molecules can also be stored inside the nanotubes or between the adjacent layers in graphite, multi-layer graphene.
Molecular dynamics studies of interaction between hydrogenand carbon nano-carriers
Wang, Yun-Che,Wu, Chun-Yi,Chen, Chi,Yang, Ding-Shen Techno-Press 2014 Coupled systems mechanics Vol.3 No.4
In this work, quantum molecular dynamics simulations (QMD) are preformed to study the hydrogen molecules in three types of carbon nanostructures, $C_{60}$ fullerene, (5,5) and (9,0) carbon nanotubes and graphene layers. Interactions between hydrogen and the nanostructures is of importance to understand hydrogen storage for the development of hydrogen economy. The QMD method overcomes the difficulties with empirical interatomic potentials to model the interaction among hydrogen and carbon atoms in the confined geometry. In QMD, the interatomic forces are calculated by solving the Schrodinger's equation with the density functional theory (DFT) formulation, and the positions of the atomic nucleus are calculated with the Newton's second law in accordance with the Born-Oppenheimer approximation. It is found that the number of hydrogen atoms that is less than 58 can be stored in the $C_{60}$ fullerene. With larger carbon fullerenes, more hydrogen may be stored. For hydrogen molecules passing though the fullerene, a particular orientation is required to obtain least energy barrier. For carbon nanotubes and graphene, adsorption may adhere hydrogen atoms to carbon atoms. In addition, hydrogen molecules can also be stored inside the nanotubes or between the adjacent layers in graphite, multi-layer graphene.
Prior uterine myoma and risk of ovarian cancer: a population-based case-control study
Jenn-Jhy Tseng,Chun-Che Huang,Hsiu-Yin Chiang,Yi-Huei Chen,Ching-Heng Lin 대한부인종양학회 2019 Journal of Gynecologic Oncology Vol.30 No.5
Objective Uterine myoma which results in the magnitude of ovarian cancer remains uncertain. This study aimed to assess the association between women with previous uterine myoma and the risk of ovarian cancer. Methods This population-based case-control study was conducted using the Taiwan National Health Insurance Research Database between 2006 and 2010. We identified 4,088 adult women with newly diagnosed ovarian cancer with 16,348 women without ovarian cancer matched for age, urbanization level, income and initial diagnosis date. Logistic regression analyses were used to evaluate the variables associated with ovarian cancer. In addition, the effect of surgical interventions on the risk of ovarian cancer was also evaluated. Results Women with previous uterine myoma were more likely than those who did not to have ovarian cancer (adjusted odds ratio [aOR]=2.26; 95% confidence interval [CI]=2.06−2.49). Patients with uterine myoma who either received (aOR=1.79; 95% CI=1.51−2.13) or did not receive hormone replacement therapy (aOR=2.51; 95% CI=2.24−2.82) experienced a significantly higher risk of ovarian cancer than those without uterine myoma, respectively. However, patients with uterine myoma who underwent either myomectomy (aOR=0.55; 95% CI=0.39−0.77) or hysterectomy (aOR=0.33; 95% CI=0.26−0.42) had a significantly lower risk of ovarian cancer. Conclusion The results revealed that a significantly higher risk of ovarian cancer in women with previous uterine myoma, through an indirect mechanism. Furthermore, a lower risk of ovarian cancer was observed in women who underwent surgical removal of the uterine myoma.
( Meng Tzu Weng ),( Shu Chen Wei ),( Chun Che Lin ),( Yuk Min Tsang ),( Chia Tung Shun ),( Jann Yuan Wang ),( Ming Jium Shieh ),( Cheng Yi Wang ),( Jau Min Wong ) 대한장연구학회 2015 Intestinal Research Vol.13 No.1
Since Taiwan is an endemic area for tuberculosis (TB), differential diagnosis between the intestinal TB and Crohn`s disease is an important issue. The steering committee of Taiwan Society of Inflammatory Bowel Disease (TSIBD) has arranged a seminar accordingly on May 24th, 2014 and the different point of views by gastroenterologist, radiologist, pathologist and infectious dis-ease specialist were suggested to help the proper diagnosis and management of these two diseases. (Intest Res 2015;13:6-10)