Narrowband Signal Localization Based on Enhanced LAD Method

Jia, Ke Xin,He, Zi Shu The Korea Institute of Information and Commucation 2011 Journal of communications and networks Vol.13 No.1

In this paper, an enhanced localization algorithm based on double thresholds (LAD) is proposed for localizing narrowband signals in the frequency domain. A simplified LAD method is first studied to reduce the computational complexity of the original LAD method without performance loss. The upper and lower thresholds of the simplified LAD method are directly calculated by running the forward consecutive mean excision algorithm only once. By combining the simplified LAD method and binary morphological operators, the enhanced LAD method is then proposed and its performance is simply discussed. The simulation results verify the correctness of discussion and show that the enhanced LAD method is superior to the LAD with adjacent cluster combining method, especially at low signal-to-noise ratio.

Catalytic, Computational, and Evolutionary Analysis of the D-Lactate Dehydrogenases Responsible for D-Lactic Acid Production in Lactic Acid Bacteria

Jia, Baolei,Pu, Zhong Ji,Tang, Ke,Jia, Xiaomeng,Kim, Kyung Hyun,Liu, Xinli,Jeon, Che Ok ACS AMERICAN CHEMICAL SOCIETY 2018 Journal of agricultural and food chemistry Vol.66 No.31

Design of 1500V solar inverter stack beyond megawatt in NPC1 topology

Xin Hao,Kwok-Wai Ma,Jia Zhao,Xin-Yu Sun 전력전자학회 2017 전력전자학술대회 논문집 Vol.2017 No.7

This paper describes a design concept of NPC1 power stack for 1500VDC megawatt level solar inverter. This stack uses three latest half-bridge IGBT modules with highest power density and operation junction temperature, which enable realization of power level beyond 1MW without paralleling. Critical design concept on loop inductance is explained. Dynamic characteristics are verified by double-pulse test. Thermal characteristics and output power limits are verified by thermal test. Temperature-sensitive component on PCB as output power constraint is identified. Different PCB repositioning solutions are tested to give the overall output power thermal derating curves, which enable output power of 1.15MW at TA=55°C with 15°C thermal margin. The power stack characteristic and performance change under different thermal environment is further analyzed.

Identification and Classification of Ber (Zizyphus mauritiana Lam) Cultivars with ISSR and RAPD Analysis

Jia-Xin Fu,Cheng-Ming Liu,Jiang-Hui Xie 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

The Efficient Induction of Embryogenic Callus and High Frequent Somatic Embryogenesis of in vitro Cultured Ber

Jia-Xin Fu,Cheng-Ming Liu,Gui-Bing Hu 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Comparison of Liver Transplantation and Liver Resection for Hepatocellular Carcinoma Patients with Portal Vein Tumor Thrombus Type I and Type II

Jia-Yu Lv,Ning-Ning Zhang,Ya-Wei Du,Ying Wu,Tian-Qiang Song,Ya-Min Zhang,Yan Qu,Yu-Xin Liu,Jie Gu,Ze-Yu Wang,Yi-Bo Qiu,Bing Yang,Da-Zhi Tian,Qing-Jun Guo,Li Zhang,Ji-San Sun,Yan Xie,Zheng-Lu Wang,Xin 연세대학교의과대학 2021 Yonsei medical journal Vol.62 No.1

Purpose: The aim of this study was to compare the efficacy of liver transplantation (LT) and liver resection (LR) for hepatocellularcarcinoma (HCC) patients with portal vein tumor thrombus (PVTT) and to investigate risk factors affecting prognosis. Materials and Methods: A total of 94 HCC patients with PVTT type I (segmental PVTT) and PVTT type II (lobar PVTT) were involvedand divided into LR (n=47) and LT groups (n=47). Recurrence-free survival (RFS) and overall survival (OS) were comparedbefore and after inverse probability of treatment weighting (IPTW). Prognostic factors for RFS and OS were explored. Results: Two treatment groups were well-balanced using IPTW. In the entire cohort, LT provided a better prognosis than LR. Among patients with PVTT type I, RFS was better with LT (p=0.039); OS was not different significantly between LT and LR(p=0.093). In subgroup analysis of PVTT type I patients with α-fetoprotein (AFP) levels >200 ng/mL, LT elicited significantly longermedian RFS (18.0 months vs. 2.1 months, p=0.022) and relatively longer median OS time (23.6 months vs. 9.8 months, p=0.065). Among patients with PVTT type II, no significant differences in RFS and OS were found between LT and LR (p=0.115 and 0.335,respectively). Multivariate analyses showed treatment allocation (LR), tumor size (>5 cm), AFP and aspartate aminotransferase(AST) levels to be risk factors of RFS and treatment allocation (LR), AFP and AST as risk factors for OS. Conclusion: LT appeared to afford a better prognosis for HCC with PVTT type I than LR, especially in patients with AFP levels>200 ng/mL.

A Comparison between Traditional and Modern Ethics from the Perspective of Social Philosophy

( Xin Qi Jia ) , ( Wan Fu Xi ) 한국윤리학회 2014 倫理硏究 Vol.95 No.1

Social philosophy is the study of people`s conception of basic social objectives. It can be divided into two categories based on two different basic objectives: harmony and strength. Harmony-oriented social philosophy and strength-oriented social philosophy are dominant in traditional society and modern society respectively. From the perspective of social philosophy, we can understand better the differences between traditional ethics and modern ethics.

Membrane Proteins as a Regulator for Antibiotic Persistence in Gram-Negative Bacteria

Yee Jia Xin,Kim Juhyun,Yeom Jinki 한국미생물학회 2023 The journal of microbiology Vol.61 No.3

Antibiotic treatment failure threatens our ability to control bacterial infections that can cause chronic diseases. Persister bacteria are a subpopulation of physiological variants that becomes highly tolerant to antibiotics. Membrane proteins play crucial roles in all living organisms to regulate cellular physiology. Although a diverse membrane component involved in persistence can result in antibiotic treatment failure, the regulations of antibiotic persistence by membrane proteins has not been fully understood. In this review, we summarize the recent advances in our understanding with regards to membrane proteins in Gram-negative bacteria as a regulator for antibiotic persistence, highlighting various physiological mechanisms in bacteria.

롤랑 바르트의 이미지 수사학 이론 바탕으로 한 영화 포스터의 기호 상징성 연구 -영화사상 여성 감독 영화 탑 5 중심으로 -

지아신위에 ( Jia Xin-yue ),이창욱 ( Lee Chang-wook ) 커뮤니케이션디자인학회 2023 커뮤니케이션 디자인학연구 Vol.84 No.-

기술의 변화는 영화를 생활 속 오락의 일부로 만들었고 영화 포스터는 대중이 영화를 선택하는 중요한 수단 중 하나이다. 최근 몇 년 동안 여성 관련 주제가 점차 확대됨에 따라 이러한 작품에 대한 영화 제작자와 관객 간의 논의가 점차 심화되었다. 따라서 여성 감독의 영화 포스터가 영화의 서사와 여성의식을 정확하게 전달하는 방식과 관객이 포스터에 담긴 기호의 상징을 해석하여 영화를 이해하는 방식은 연구할 가치가 있는 주제 중 하나가 되었다. 본 연구의 목적은 여성 감독을 연구의 대상으로 선정하여 여성 감독 영화 포스터의 조형 요소를 분석하고 포스터의 상징성을 파악하며 공통점을 요약하는 것이다. 이를 통해 영화 포스터의 기호 상징성에 대한 연구를 보완함과 동시에 현재 여성 관련 주제의 영화 트렌드와 특성을 전망하고자 한다. 우선, 본 연구에서는 문헌분석법을 이용하여 영화 포스터와 이미지 수사학에 대한 선행문헌을 연구하여 정리하였으며, 영화 포스터의 조형 요소 및 이미지 수사학적 분석법을 이용하여 영화 포스터를 분석하였다. 또한, 연구의 객관성을 확보하기 위하여 연구 결과에 관한 전문가 인터뷰를 수행하였다. 연구 결과 포스터의 조형 요소에는 영화사에서 중요한 의미를 지닌 여성 감독의 영화 포스터를 통해 요약할 수 있었는데, 제목에는 여성의 이름을 사용하는 경향이 있고, 구도는 인물 중심이며, 이미지는 단독 인물을 위주로 강조하고 환경과 사물은 보완적 역할을 하는 특징을 보였다. 그러나 색상에서는 뚜렷한 공통점을 나타내지 않았다. 본 연구는 5개 포스터의 상징적 특성을 분석함으로써 영화 선정에서 현재 트렌드의 방향을 제시하여 이러한 유형의 영화에 참고 자료를 제공하고자 한다. Changes in technology have made movies a part of entertainment in life, and movie posters are one of the important means for the public to choose movies. As women-related themes have gradually expanded in recent years, discussions between filmmakers and audiences about these works have intensified. Therefore, the way a female director's film poster accurately conveys the narrative and female consciousness of the film and the way the audience understands the film by interpreting the symbols contained in the poster have become one of the subjects worthy of research. The purpose of this study is to analyze the formative elements of female director film posters by selecting female directors as the subject of study, identify the symbolism of the posters, and summarize commonalities. Through this, the research on the sign symbolism of the movie poster will be supplemented, and at the same time, the trend and characteristics of the movie related to women will be predicted. First of all, in this study, prior literature on movie posters and image rhetoric was studied and organized using literature analysis, and movie posters were analyzed using the formative elements of movie posters and image rhetoric analysis. In addition, in order to secure the objectivity of the study, expert interviews were conducted on the research results. As a result of the study, the formative elements of the poster could be summarized through the female director's movie poster, which has an important meaning in the history of film. The title tends to use a woman's name, the composition is character-centered, the image focuses on a single character, and the environment and objects play a complementary role. However, there was no clear commonality in color. This study aims to provide reference materials for these types of films by suggesting the direction of the current trend in film selection by analyzing the symbolic characteristics of the five posters.

Prognostic Factors on Overall Survival of Newly Diagnosed Metastatic Nasopharyngeal Carcinoma

Li, Jia-Xin,Huang, Shao-Min,Wen, Bi-Xiu,Lu, Tai-Xiang Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.7

Background: To investigate factors associated with overall survival in patients with newly diagnosed metastatic nasopharyngeal carcinoma. Materials and Methods: Two hundred and two consecutive patients with pathologically confirmed nasopharyngeal carcinoma with distant metastasis at diagnosis seen between December 2007 and May 2011 were reviewed. Patient, tumor and treatment factors were analyzed for their significance regarding overall survival. Results: The median follow-up time was 22 months. At the time of this report, 116 patients had died. For 112 patients, cause of death was nasopharyngeal carcinoma. The 1, 2, 3, and 4-year overall survival rates were 75.6%, 50.2%, 39.2%, and 28.2%, respectively. Cox regression multivariate analysis showed that T-stage (p=0.045), N-stage (p=0.014), metastasis number (p<0.001) and radiotherapy for nasopharynx and neck (p<0.001) were significant factors for overall survival. Conclusions: Early T-stage and N-stage, solitary metastasis in a single organ were good prognostic factors for patients with newly diagnosed metastatic nasopharyngeal carcinoma. Radiotherapy should be strongly recommended in systemic treatment.