KI-HABS: Key Information Guided Hierarchical Abstractive Summarization

( Mengli Zhang ),( Gang Zhou ),( Wanting Yu ),( Wenfen Liu ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.12

With the unprecedented growth of textual information on the Internet, an efficient automatic summarization system has become an urgent need. Recently, the neural network models based on the encoder-decoder with an attention mechanism have demonstrated powerful capabilities in the sentence summarization task. However, for paragraphs or longer document summarization, these models fail to mine the core information in the input text, which leads to information loss and repetitions. In this paper, we propose an abstractive document summarization method by applying guidance signals of key sentences to the encoder based on the hierarchical encoder-decoder architecture, denoted as KI-HABS. Specifically, we first train an extractor to extract key sentences in the input document by the hierarchical bidirectional GRU. Then, we encode the key sentences to the key information representation in the sentence level. Finally, we adopt key information representation guided selective encoding strategies to filter source information, which establishes a connection between the key sentences and the document. We use the CNN/Daily Mail and Gigaword datasets to evaluate our model. The experimental results demonstrate that our method generates more informative and concise summaries, achieving better performance than the competitive models.

A Nano-power Switched-capacitor Voltage Reference Using MOS Body Effect for Applications in Subthreshold LSI

Zhang, Hao,Huang, Meng-Shu,Zhang, Yi-Meng,Yoshihara, Tsutomu The Institute of Electronics and Information Engin 2014 Journal of semiconductor technology and science Vol.14 No.1

A nano-power CMOS voltage reference is proposed in this paper. Through a combination of switched-capacitor technology with the body effect in MOSFETs, the output voltage is defined as the difference between two gate-source voltages using only a single PMOS transistor operated in the subthreshold region, which has low sensitivity to the temperature and supply voltage. A low output, which breaks the threshold restriction, is produced without any subdivision of the components, and flexible trimming capability can be achieved with a composite transistor, such that the chip area is saved. The chip is implemented in $0.18{\mu}m$ standard CMOS technology. Measurements show that the output voltage is approximately 123.3 mV, the temperature coefficient is $17.6ppm/^{\circ}C$, and the line sensitivity is 0.15 %/V. When the supply voltage is 1 V, the supply current is less than 90 nA at room temperature. The area occupation is approximately $0.03mm^2$.

Electrochemical enhanced heterogeneous activation of peroxymonosulfate by CoFe2O4 nanoparticles to degrade moxifloxacin

Meng Zhang,Lili Liu,Jianan Li,Rui Zhan,Zhiping Wang,Haosheng Mi,Yunxiao Zhang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.127 No.-

The catalytic mechanism of CoFe2O4 nanoparticles (NPs) was investigated in the system of electrochemicalenhanced heterogeneous activation of peroxymonosulfate (EC/CoFe2O4/PMS) with moxifloxacin(MOX) as target contaminant. The removal efficiencies of MOX in PMS, CoFe2O4, EC, CoFe2O4/PMS, andEC/CoFe2O4/PMS system were 18.3%, 36.1%, 43.7%, 96.9%, and 98.3%, respectively. Although there wasno synergy effect between EC and heterogeneous catalytic oxidation reaction (HCOR) on MOX removal,the value of apparent rate constant (karc) was much higher in EC/CoFe2O4/PMS system (0.24 min1) comparedwith CoFe2O4/PMS system (0.13 min1). Therefore, EC not only kept the structure of CoFe2O4 NPsstable, but also significantly accelerated the reaction rate of HCOR. Meanwhile, according to electrochemicalimpedance spectra of catalysts synthesized based on ion-substitution strategy and the EC-HCORexperimental results, the decisive role of „Co in PMS activation and the electron transfer between„Co and „Fe were confirmed. The TOC removal efficiency was reached 74.4% as the ratio of PMS toCoFe2O4 NPs being 0.8 mM to 50 mg/L (30 min), and further improved to 87.6% with batch addition(0.25 mM per 30 min) of PMS (120 min, CoFe2O4 = 100 mg/L). The research results could improve theunderstanding of catalytic mechanism of spinel oxide in electrochemical system.

TG-SPSR: A Systematic Targeted Password Attacking Model

( Mengli Zhang ),( Qihui Zhang ),( Wenfen Liu ),( Xuexian Hu ),( And Jianghong Wei ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.5

Identity authentication is a crucial line of defense for network security, and passwords are still the mainstream of identity authentication. So far trawling password attacking has been extensively studied, but the research related with personal information is always sporadic. Probabilistic context-free grammar (PCFG) and Markov chain-based models perform greatly well in trawling guessing. In this paper we propose a systematic targeted attacking model based on structure partition and string reorganization by migrating the above two models to targeted attacking, denoted as TG-SPSR. In structure partition phase, besides dividing passwords to basic structure similar to PCFG, we additionally define a trajectory-based keyboard pattern in the basic grammar and introduce index bits to accurately characterize the position of special characters. Moreover, we also construct a BiLSTM recurrent neural network classifier to characterize the behavior of password reuse and modification after defining nine kinds of modification rules. Extensive experimental results indicate that in online attacking, TG-SPSR outperforms traditional trawling attacking algorithms by average about 275%, and respectively outperforms its foremost counterparts, Personal-PCFG, TarGuess-I, by about 70% and 19%; In offline attacking, TG-SPSR outperforms traditional trawling attacking algorithms by average about 90%, outperforms Personal-PCFG and TarGuess-I by 85% and 30%, respectively.

Uniqueness of Entire Functions and Differential Polynomials Sharing one Value

Zhang, Xiao-Bin,Meng, Da-Wei Department of Mathematics 2014 Kyungpook mathematical journal Vol.54 No.3

In this paper, we shall utilize Nevanlinna value distribution theory to study the uniqueness problems on entire functions and differential polynomials sharing one value. Our theorems improve or generalize some results of Zhang and Lin, Chen, Zhang, Lin and Chen.

Selaginella austrotibetica (Selaginellaceae), a new spikemoss from Xizang, China

Meng-Hua Zhang,Jie Yang,Aleksandr Petrovich Shalimov,강종수,Xian Chun Zhang 국립생물자원관 2024 Journal of species research Vol.13 No.1

Selaginella austrotibetica, a new spikemoss species from China, is described. The species is epipetric and was found on a moss-covered rocky cliff by a riverbank. Morphologically, it is unlike any anisosporophyllous species in the genus Selaginella. However, it resembles species of the S. sanguinolenta group, especially similar to S. sajanensis in gross morphology, except for the characters of strobilus. The molecular phylogenetic analysis clearly showed that S. austrotibetica was nested within the anisosporophyllous species clade, forming a sister relationship with the clade of S. vaginata and S. xipholepis, and distinct from the S. sanguinolenta group, including S. sajanensis. Although S. austrotibetica is sister to the clade of S. vaginata and S. xipholepis, the species can be clearly distinguished by its sparse leaves on branches, dorsal leaves that are broad-ovate, base obtuse to rounded, margin denticulate or very shortly sparsely ciliolate, and leaves that are slightly thick and shiny. Therefore, we described Selaginella austrotibetica as a new species and discuss its phylogenetic relationships within the genus Selaginella.

Dual-inhibitor composite BTA/PPy/MIL-88(Fe) for active anticorrosion of epoxy resin coatings

Meng Zhang,Yu Zhang,Yucong Chen,Xiaoru Tian,Lingzhi Liu,Yizhong Wang,Ruijie Guo,Hong Yan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.119 No.-

MIL-88(Fe) was used as an oxidant and a hard template for the synthesis of polypyrrole (PPy) on its surface,and the formation of PPy made the surface of MIL-88(Fe) rougher as well as more voids formed inthe interior. The increased specific surface area allowed more benzotriazole (BTA) (17.8 wt%) loaded onPPy/MIL-88 particles. BTA/PPy/MIL-88(Fe) was employed as a novel corrosion inhibitor to enhance thecorrosion resistance of epoxy coating for carbon steel. BTA/PPy/MIL-88(Fe) filler improved the corrosionresistance of EP coating without/with artificial scratch by delaying the cathodic and anodic reactions incorrosive media. Both BTA and MIL-88(Fe) played the role of corrosion inhibitors, making EP coating possessactive corrosion protection and pH-sensitive performance. Besides, BTA/PPy/MIL-88(Fe) enhancedthe adhesion of EP coating by filling the pores inside.

Potential Therapeutic Targets for the Primary Gallbladder Carcinoma: Estrogen Receptors

Zhang, Ling-Qiang,Zhang, Xiu-De,Xu, Jia,Wan, Yong,Qu, Kai,Zhang, Jing-Yao,Wang, Zhi-Xin,Wei, Ji-Chao,Meng, Fan-Di,Tai, Ming-Hui,Zhou, Lei,Liu, Chang Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.4

Gallbladder carcinoma, the most frequent malignant neoplasm of the biliary tract system, has always been considered to feature late clinical presentation and diagnosis, limited treatment options and an extremely poor prognosis. In recent years, while the incidence of gallbladder cancer has appeared to be on the increase, the available treatment methods have not greatly improved survival of the affected patients. Thus, exploring new therapeutic targets for this devastating disease is an urgent matter at present. Epidemical studies have demonstrated that the incidence of gallbladder carcinoma exhibits a distinct gender bias, affecting females two to three times more than males, pointing to crucial roles of estrogen. It is well known that estrogen acts on target tissues by binding to estrogen receptors (ERs), which are mainly divided into three subtypes, $ER{\alpha}$, $ER{\beta}$ and $ER{\gamma}$. $ER{\alpha}$ and $ER{\beta}$ appear to have overlapping but also unique even opposite biological effects. As important pathogenic mediators, ERs have been considered to relate to several kinds of tumors. In gallbladder carcinoma tissue, ERs have been shown to be positively expressed, and ERs expression levels are associated with differentiation and prognosis of this cancer. Nevertheless, the exact mechanisms of estrogen inducing growth of gallbladder carcinoma remain poorly understood. On the base of the current investigations, we deduce that estrogen participates in promotion of gallbladder carcinoma by influencing the formation of gallstones, stimulating angiogenesis, and promoting abnormal proliferation. Since ERs mediate the carcinogenic actions of estrogen in gallbladder, and therapy targeting ERs may provide new directions for gallbladder carcinoma. Therefore, it should be stressed that ERs are potential therapeutic targets for gallbladder carcinoma.

중국 항공물류 산업의 문제점과 개선 방안에 관한 연구

장몽택(Zhang, Meng-Ze),장 연(Zhang, Yan),손해양(Sun, Hai-Yang),배기형(Bae, Ki-Hyung) 한국물류학회 2018 물류학회지 Vol.28 No.5

This study’s purpose is to propose improvement program about analyzing issues according to the aviation logistics industry of China which is in its early stages as the logistics market opening. For this purpose, this study used internet and statistical information of Chinese government, reports of Chinese government agency, relating papers and publications, document literature which are relating to the aviation logistics. The results of the analysis are as follows. Issues of Chinese aviation logistics industry are shown as uneven development on regions and lacking of infrastructure, low level of information and smartification and shortage experts on macroscopic level, also it is appeared on micro level as logistics system backwardness and shortage of comprehensive competitiveness and lacking of cooperation in enterprises of aviation logistics, small-scale logistics enterprises and operational disorder, severe service homogeneity because of insufficient innovation. The improvement program about these obstructive factors is suggested that improve policies and systems of aviation logistics, improve of infrastructure construction, enhance level of information and smartification, develope education and professionals, promote cooperation’s development through integration, mutually develope through federation, enlarge scales and increasing ability of management, and create differentiation and service through innovation. 본 연구는 발전 초기단계인 중국의 항공물류 산업이 물류시장 개방에 따른 문제점을 분석하고 이에 대한 개선방안을 제시하는데 목적이 있다. 이를 위하여 본 연구에서는 인터넷 및 중국정부 통계 자료, 중국 정부 기관 보고서 및 관련 논문과 간행물 등 항공물류와 관련 문헌자료를 활용하였다. 분석결과는 다음과 같다. 중국 항공물류 산업의 문제점은 거시적 측면에서 지역 간의 발전 불균형 및 인프라 부족, 정보화와 스마트화 수준 저하, 전문가 부족 등으로 나타났고, 미시적 측면에서 물류 체계와 종합 경쟁력 부진 및 협력 부재, 물류업체 소규모 및 업무 절차 혼잡, 혁신 부족으로 인한 서비스 동질화 심각 등으로 파악되었다. 이러한 문제 점들에 대한 개선 방안으로는 항공물류 정책 및 제도의 개선, 인프라 보완 및 강화, 정보화와 스마트화의 구축 및 증대, 교육 및전문 인재의 육성, 일체화를 통한 협력 발전, 연맹을 통한 상생 발전, 규모 학대 및 관리 능력 제고, 혁신을 통한 차별화 와 서비스의 창출 등이 요구된다.

코로나19 이후 도시관광 선택속성이 만족도 및 재방문 의도에 미치는 영향 : 중국 상해를 중심으로

장멍멍 ( Zhang Meng-meng ),김진강 ( Kim Jin-kang ) 동북아관광학회 2023 동북아관광연구 Vol.19 No.1

21세기는 전염병의 시대가 되었다. 전 세계적 전염병의 확산으로 국가 간 이동이 제한되고 유동 인구가 감소하였으며 이에 따라 관광수요도 꾸준히 감소했다(백방림, 2021). 코로나19 대유행이 장기화함에 따라 관광 분야의 사회적, 경제적 타격이 심화하고 있다(송혜민·김홍범, 2022). 현재 코로나19가 세계적인 전염병으로 확산한 만큼 국제 관광시장이 전면 회복되기까지는 상당한 시간이 걸릴 것으로 보인다(손효리·김영현, 2021). 그러나 중국에서 코로나19 환경 속에서 도시관광에 관한 연구가 부족하다. 따라서 본 연구는 코로나19 환경 속에서 중국 국내 도시 상해 여행 경험이 있는 중국 관광객이 관광지를 선택할 때 도시관광 선택속성 요인에 대한 중요성과 만족, 이런 결과가 전체 관광 만족도에 미치는 영향을 파악하고 만족도가 재방문 의도에 미치는 영향을 파악하기 위한 것이다. 아울러 이런 요인을 분석해 관광산업의 이해관계자들이 코로나 환경에서 관광정책 및 마케팅 전략을 수립할 수 있는 기초자료를 제공하고자 한다. 본 연구를 위해 2021년 9월 16일부터 10월 16일까지 코로나19 환경에서 상해 여행경험이 있는 중국 관광객들을 대상으로 온라인 설문조사를 실시하였다. 총 500부의 설문지를 배포하였으며 불성실하게 응답한 설문지를 제외하고 237부를 최종 분석에 이용하였다. 연구결과, 도시관광 선택속성(매력성, 서비스품질, 접근성, 비용성, 방역수준)에서 방역수준, 매력성, 접근성과 비용성은 만족도에 유의적인 영향을 미쳤지만, 서비스품질은 만족도에 미치는 영향 유의하지 못한 것으로 나타났다. 특히 방역수준이 만족도에 미치는 영향이 큰 것으로 나타났다. 한편, 매력성, 접근성, 비용성은 만족도에 유의적인 영향을 미칠 수 있는 것으로 나타났다. 이러한 결과를 토대로 하여 학술적, 실무적 시사점을 제시하였다. The 21st century has become an era of infectious diseases. Due to the spread of infectious diseases around the world, movement between countries was restricted, the floating population decreased, and tourism demand decreased steadily(Baekbangrim, 2021). As the COVID-19 pandemic is prolonged, social and economic damage in the tourism sector is intensifying(Song Hye-min and Kim Hong-beom, 2022). Currently, as COVID-19 has spread to a global epidemic, it will take a considerable amount of time for the international tourism market to fully recover(Son Hyo-ri and Kim Young-hyun, 2021). However, in China, there is a lack of research on urban tourism in the COVID-19 environment. Therefore, this study aims to understand the importance and satisfaction of urban tourism selection attributes when Chinese tourists with experience in Shanghai, China, in the COVID-19 environment, and the effect of satisfaction on the intention to revisit. In addition, by analyzing these factors, we intend to provide basic data for stakeholders in the tourism industry to establish tourism policies and marketing strategies in the COVID-19 environment. For this study, an online survey was conducted on Chinese tourists who have traveled to Shanghai in the COVID-19 environment from September 16 to October 16, 2021. A total of 500 questionnaires were distributed, and 237 copies were used for the final analysis, excluding the questionnaires that were faithfully answered. As a result of the study, quarantine level, attractiveness, accessibility, and cost in urban tourism selection attributes(attractive, service quality, accessibility, and quarantine level) had a significant effect on satisfaction, but service quality was not significant. In particular, it was found that the level of quarantine had a large effect on satisfaction. On the other hand, it was found that attractiveness, accessibility, and cost can have a significant effect on satisfaction. Based on these results, academic and practical implications were presented.