http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pave the Way to Future Smart Living Space - Cross-layer Enhanced AAA for 4G Core Network
Tin-Yu Wu,Chi-Yuan Chen,Kai-Di Chang,Diego Chung,Han-Chieh Chao 보안공학연구지원센터 2007 International Journal of Smart Home Vol.1 No.2
The 4th generation mobile communication system certainly will have a lot of improvement such as supporting higher multimedia loading, offering faster transmission rate, and the implementation of IP. The future service of the network will be definitely conveyed into an All-IP network. To allow people to better perform their daily living activities, improve the life quality, and enjoy entertainment and leisure activities, we proposed our system in this paper. This system is built upon a new technology of a 4G network, which includes the user authentication in heterogeneous network, the key generation, and data encryption that later merged together into a cross layer network for smart living space. This technology can develop a smart and convenient way of living.
Increasing the Lifetime of Ad Hoc Networks Using Hierarchical Cluster-based Power Management
( Tin-yu Wu ),( Kai-hua Kuo ),( Hua-pu Cheng ),( Jen-wen Ding ),( Wei-tsong Lee ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.1
One inevitable problem in Ad Hoc networks is the limited battery capacity, which explains why portable devices might shut down suddenly when the power of hardware is depleted. Hence, how to decrease the power consumption is an important issue in ad hoc networks. With the development of wireless technology, mobile devices can transmit voices, surf the Internet, download entertaining stuffs, and even support some P2P applications, like sharing real-time streaming. In order to keep the quality stable, the transmission must be continuous and it is thus necessary to select some managers to coordinate all nodes in a P2P community. In addition to assigning jobs to the staffs (children) when needed, these managers (ancestors) are able to reappoint jobs in advance when employees retire. This paper proposed a mechanism called Cluster-based Power Management (CPM) to stabilize the transmissions and increase Time to Live (TTL) of mobile hosts. In our new proposed method, we establish the clusters according to every node`s joining order and capability, and adjust their sleep time dynamically through three different mathematical models. Our simulation results reveal that this proposed scheme not only reduces the power consumption efficiently, but also increases the total TTLs evidently.
Providing Efficient Secured Mobile IPv6 by SAG and Robust Header Compression
Wu, Tin-Yu,Chao, Han-Chieh,Lo, Chi-Hsiang Korea Information Processing Society 2009 Journal of information processing systems Vol.5 No.3
By providing ubiquitous Internet connectivity, wireless networks offer more convenient ways for users to surf the Internet. However, wireless networks encounter more technological challenges than wired networks, such as bandwidth, security problems, and handoff latency. Thus, this paper proposes new technologies to solve these problems. First, a Security Access Gateway (SAG) is proposed to solve the security issue. Originally, mobile terminals were unable to process high security calculations because of their low calculating power. SAG not only offers high calculating power to encrypt the encryption demand of SAG's domain, but also helps mobile terminals to establish a multiple safety tunnel to maintain a secure domain. Second, Robust Header Compression (RoHC) technology is adopted to increase the utilization of bandwidth. Instead of Access Point (AP), Access Gateway (AG) is used to deal with the packet header compression and de-compression from the wireless end. AG's high calculating power is able to reduce the load on AP. In the original architecture, AP has to deal with a large number of demands by header compression/de-compression from mobile terminals. Eventually, wireless networks must offer users "Mobility" and "Roaming". For wireless networks to achieve "Mobility" and "Roaming," we can use Mobile IPv6 (MIPv6) technology. Nevertheless, such technology might cause latency. Furthermore, how the security tunnel and header compression established before the handoff can be used by mobile terminals handoff will be another great challenge. Thus, this paper proposes to solve the problem by using Early Binding Updates (EBU) and Security Access Gateway (SAG) to offer a complete mechanism with low latency, low handoff mechanism calculation, and high security.
Ho, Manh Tin,Kim, Young Mee,Yu, Dae-Yeul,Lee, Dae Ho,Cho, Moonjae,Hyun, Changlim The Korean Society for Applied Biological Chemistr 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.4
Hepatic stellate cells (HSCs) are the main extra cellular matrix-producing cells in the liver. Several reports have indicated that activated HSCs are involved in hepatic carcinogenesis by way of transforming growth factor ${\beta}$ (TGF-${\beta}$) secretion. This study aimed to investigate the effects of TGF-${\beta}$, derived from HSCs activated by the chronic hepatitis B virus x protein (HBx), on the transdifferentiation of hepatocytes into hepatocarcinoma cells. Normal hepatocytes (the Chang liver cell line) were treated with a low concentration of TGF-${\beta}$ for 2 weeks, after which cell cycle- and cell signaling-related protein expression was analyzed. Long-term treatment of TGF-${\beta}$ clearly induced the proliferation and the expression of cancer signaling proteins in the Chang cell line. TGF-${\beta}$ treatment also increased the expression of c-Jun N-terminal kinase (JNK) and c-Myc, indicating that induction of the JNK/pSmad3/c-Myc oncogenic signaling pathway is involved in hepatocyte transformation. Similar results were observed after culturing Chang cells with conditioned media derived from the activated LX-2 hepatic stellate cell line, suggesting that TGF-${\beta}$ paracrine effects are involved in the transformation of hepatocyte cells into hepatocarcinoma cells. Immunohistochemical results showed that the livers from HBx transgenic mice were composed of more activated HSCs and produced more TGF-${\beta}$ compared with those from normal mice. The TGF-${\beta}$ secreted from HBx-infected HSCs might induce transdifferentiation of hepatocytes into hepatocarcinoma, which is the fact that suggested a potential knowledge on liver cancer inhibition.
Cheung Eric Yuk Hong,Ng Rebecca Yuen Ting,Yu Simon Chun Ho,Zhuang James Tin Fong,Wong George Kwok Chu 대한신경중재치료의학회 2022 Neurointervention Vol.17 No.3
Precipitating hydrophobic injectable liquid (PHIL; MicroVention, Aliso Viejo, CA, USA) and Squid (Balt, Irvine, CA, USA) are 2 newer liquid embolic agents used in endovascular embolization of cerebral arteriovenous malformation (AVM). This study aims to investigate and compare the effectiveness and safety profile of the 2 newer liquid embolic agents in the embolization of cerebral AVM. This is a retrospective study on all patients diagnosed with cerebral AVM undergoing endovascular embolization with liquid embolic agents PHIL and Squid admitted to the Division of Neurosurgery, Department of Surgery in Prince of Wales Hospital from January 2014 to June 2021. Twenty-three patients with cerebral AVM were treated with 34 sessions of endovascular embolization with either PHIL or Squid (17 sessions each) liquid embolic agents with a male to female ratio of 2.3:1 (male 16; female 7) and mean age of 44.6 (range, 12 to 67). The mean total nidus obliteration rate per session was 57% (range, 5% to 100%). Twenty-one patients (91.3%) received further embolization, stereotactic radiosurgery, or surgical excision after initial endovascular embolization. There were 2 morbidities (1 neurological and 1 non-neurological, 6%) and no mortalities (0%). All patients had static or improvement in modified Rankin Scale at 3 to 6 months at discharge. PHIL and Squid are effective and safe liquid embolic agents for endovascular embolization of cerebral AVM, achieving satisfactory nidal obliteration rates and patient functional outcomes.