Information Security in the Age of Algorithms

Fei Yang(Fei Yang),Xuan Luo(Xuan Luo) 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.1

Algorithms are now widely used in all areas of social life, building a new social picture and reality. As a technology based on big data modelling and analysis, algorithms are embedded in all aspects of information production and distribution by means of technology, and become an important force in the construction of information environment. Under the algorithmic logic of information dissemination, the visible and invisible are in fact influenced by the algorithm as an authoritative mediator and mediator. From Daniel Dayan's 'visibility' perspective, this paper examines the risks posed by algorithms in three areas: the risk of passive disclosure of personal privacy, the use and control of personal data by profit-seeking algorithms, and the polarisation of information cocoons and circles. The information security risk brought by algorithms is attempted to be tackled and improved from several aspects, such as constructing a 'trinity' information security strategy system; adhering to the mainstream value orientation and highlighting the rational balance of “tool-value” of algorithms; and bringing into play multiple mechanisms together with effects.

Positive Association of TEAD1 With Schizophrenia in a Northeast Chinese Han Population

Yang Sun,Lin Wen,Yi-Yang Luo,Wen-Juan Hu,Hui-Wen Ren,Ye Lv,Cong Zhang,Ping Gao,Li-Na Xuan,Guan-Yu Wang,Cheng-Jie Li,Zhi-Xin Xiang,Zhi-Lin Luan 대한신경정신의학회 2023 PSYCHIATRY INVESTIGATION Vol.20 No.12

Objective Schizophrenia is a complex and devastating psychiatric disorder with a strong genetic background. However, much uncertainty still exists about the role of genetic susceptibility in the pathophysiology of schizophrenia. TEA domain transcription factor 1 (TEAD1) is a transcription factor associated with neurodevelopment and has modulating effects on various nervous system diseases. In the current study, we performed a case–control association study in a Northeast Chinese Han population to explore the characteristics of pathogenic <i>TEAD1</i> polymorphisms and potential association with schizophrenia.Methods We recruited a total of 721 schizophrenia patients and 1,195 healthy controls in this study. The 9 single nucleotide polymorphisms (SNPs) in the gene region of <i>TEAD1</i> were selected and genotyped.Results The genetic association analyses showed that five SNPs (rs12289262, rs6485989, rs4415740, rs7113256, and rs1866709) were significantly different between schizophrenia patients and healthy controls in allele or/and genotype frequencies. After Bonferroni correction, the association of three SNPs (rs4415740, rs7113256, and rs1866709) with schizophrenia were still evident. Haplotype analysis revealed that two strong linkage disequilibrium blocks (rs6485989-rs4415740-rs7113256 and rs16911710-rs12364619-rs1866709) were globally associated with schizophrenia. Four haplotypes (C-C-C and T-T-T, rs6485989-rs4415740-rs7113256; G-T-A and G-T-G, rs16911710-rs12364619-rs1866709) were significantly different between schizophrenia patients and healthy controls.Conclusion The current findings indicated that the human <i>TEAD1</i> gene has a genetic association with schizophrenia in the Chinese Han population and may act as a susceptibility gene for schizophrenia.

Identification of Proteins Responsible for the Development of Adriamycin Resistance in Human Gastric Cancer Cells Using Comparative Proteomics Analysis

Yang, Yi-Xuan,Hu, Huai-Dong,Zhang, Da-Zhi,Ren, Hong Korean Society for Biochemistry and Molecular Biol 2007 Journal of biochemistry and molecular biology Vol.40 No.6

Resistance to anticancer drugs is a major obstacle in the effective treatment of tumors. To understand the mechanisms responsible for multidrug resistance (MDR), a proteomic approach was used to identify proteins that were expressed in different levels by the adriamycinresistant human gastric cancer cell line, SGC7901/ADR, and its parental cell line, SGC7901. Two-dimensional gel electrophoresis (2-DE) and image analysis was used to determine which protein spots were expressed in different levels by the two cell lines. These spots were then partially identified using ESI-Q-TOF mass spectrometry, and the differential expressional levels of the partially identified proteins were then determined by western blot analysis and real-time RT-PCR. Additionally, the association of Nucleophosmin (NPM1), a protein that was highly expressed by SGC7901/ADR, with MDR was analyzed using siRNA. As a result of this study, well-resolved, reproducible 2-DE patterns of SGC7901/ADR and SGC7901 were established, and 16 proteins that may playa role in the development of thermo resistance were identified. Additionally, suppression of NPMl expression was found to enhance adriamycin chemosensitivity in SGC7901/ADR. These results provide a fundamental basis for the elucidation of the molecular mechanism of MDR, which may assist in the treatment of gastric cancer.

Design and Implementation of a High Power Three-Level T-Type Inverter for a Photovoltaic System

Yang Xuan,Mofan Tian,Xiaomei Song,Wenjie Chen,Xu Yang 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

Nowadays, the grid-connected photovoltaic systems are an important part of the renewable energy sources, and their performance is getting more and more important. Many reported researches focused on the traditional NPC topology. However, few researches were about the T-type NPC inverter. In this paper, a high power three-phase T-type neutral point clamped grid connected photovoltaic inverter prototype is designed and implemented. The design and implementation procedure of the inverter is discussed in detail. Experimental results showed that the output power of the proposed inverter could reach up to 100kW with unit power factor, while the total harmonic distortion of the grid current was less than 3%. And the total efficiency of the system is measured as 95.6%. The experimental results demonstrated the T-type NPC inverter can operate with a good performance.

Genus Sorolopha Lower (Lepidoptera, Tortricidae) with One New Species from the Northern Part of Vietnam

Xuan-Vi Le,Pham Thi Vuong,Yang-Seop Bae 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.10

Sorolopha Lower, 1901 is one of the largest genera belongs to the tribe Olethreutini in the subfamily Olethreutinae Obraztsov, 1946. This genus is distributed throughout the world, including 64 described species (Brown 2005; Horak 2006). Among them, 60 species are distributed mainly in the Oriental Region. Besides, the genus was also recorded from Australian Region (6 species) and Palaearctic Region (2 species). Characteristics of genus Sorolopha are very close to those of Eudemis (Diakonoff 1973). Sorolopha species in Vietnam have been reviewed by Kuznetzov (1988, 2000 & 2003) and Razowski (2009). In 1998, Kuznetzov recorded one new species, S. ghilarovi Kuznetzov in a study on Lepidoptera fauna from the Northern part of Vietnam, and he (2000) also recorded 9 species from the country based on the collection of Zoological Institute, St. Petersburg. Moreover, a new species S. asymmetrana Kuznetzov was described in 2003. Most recently, Razowski (2009) reported 4 known species such as, S. herbifera (Meyrick, 1909); S. sphaerocopa (Meyrick, 1930); S. satoi Kawabe, 1989; S. chiangmaiensis Kawabe, 1989. He also described two species as new to science, S. brunnorbis Razowski and S. dorsichlora Razowski from the collection of the Berlin museum. In this study, a total of 10 species have hitherto been recorded from the Northern part of Vietnam including one new species, S. cucphuongensis sp. nov.. The new species is very similar to S. phyllochlora Meyrick but it can be separated by different characters of wing pattern and socius of male genitalia. The materials for identification are based on the collection of University of Incheon.

Taxonomic Study on Subfamily Tortricinae (Lepidoptera, Tortricidae) from Northern Part of Vietnam

Xuan-Vi Le,Pham Thi Vuong,Do-Young Chae,Yang-Seop Bae 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.05

Tortricinae is the one of three subfamilies (Tortricinae, Olethreutinae and Chlidanotinae) in the Tortricidae and widely distributed around the world. It has been divided into 11 tribes (Horak and brown, 1991). The subfamily can be distinguished from other subfamilies by the two rings of scale on each antenna segment, and the caulis articulated with the juxta by a short membrane. A total of 1010 named species are presenting in Palaearctic region (Razowski, 2008) including 382 species of six tribes are distributed in Europe (Razowski, 2003), more than 260 species were recorded from South East Asia (Robinson, Tuck and Shaffer, 1994). The fauna of Tortricinae in Vietnam is poorly known even some expeditions were previously done by some foreign entomologist. For Vietnamese entomologist, the first investigation on insect pest of agricultural crops was done by National Institute of Plant Protection (NIPP) in the period 1977-1978 and 1997-1998 with only seven Tortricidae species were recorded. In the year, 2000 Kuznetzov annotated a list of 208 tortricid species from Vietnam. Recently, more than 80 species of 31 genera belong to Tortricinae are announced from 2008 to 2009 by Razowski. Of them, 33 species were described as new to science from Vietnam. At present, the tortricid fauna of Vietnam is estimated approximately 315 species (Svetlana V. Nedoshivina, 2010). In this study we briefly reviewed of subfamily Tortricinae in Northern part of Vietnam. Totally, 28 species of 13 genera are recognized, but only 9 species were previously recorded. Besides, Some unidentified species are waiting for further study. The materials for identification are based on the collection of University of Incheon, which were collected from 2004-2010 in the Northern part of Vietnam by Vietnamese and Korean entomologist.

Taxonomic Notes of Moths (Lepidoptera) in the North Vietnam

Yang-Seop Bae,Le Xuan Vi,Kyu-Tek Park,Nguyen Nhu Cuong,Pham Van Nha,Pham Thi Vuong,Jong-Gyun Park 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.05

In Vietnam, the moths were reported by some foreign entomologist such as de Joannis (1900), Ronkay (1989), Speidel & Kononenko (1998), Park et al. (2006), and Lien et al. (2008). In 1928 -1929 de Joannis created the original data of moths. His final reports on Lepidoptera were 45 families, 611 species of Noctuidae, and 461 species of Pyralidae. After the Vietnam War in North (1954), many times were collected in North Vietnam by National Institute of Plant Protection (NIPP). But all of them focused on fauna of the agricultural pests. According to the publication of NIPP (1967-1968), 533 species of 37 families of which there were 91 species of Noctuidae in the North Vietnam and some other moths known as the insect pests have been reported. In 1977 there were 77 species of Pyralidae known as the insect pests in the North Vietnam. The purpose of this study is to assess diversity of Lepidoptera order and to clarify the fauna in the Northern part of Vietnam, base on the Korea Vietnam collaborative insect-research project (2004-2006). The collecting have been conducted in four National Parks (Tam Dao, Cuc Phuong, Ba Be, and Bach Ma) Given results of the survey in the North of Vietnam from 2002 to 2006, 816 species of Lepidoptera classified by 4 families; Noctuidae (564 species), Pyraloidae (201 species), Sphingidae (28 species), and Lecithoceridae (23 species). Many of the identified species of macro-moths including Noctuidae, Pyraloidae and Lecithoceridae are known as the very newest one in Vietnam.

Thermal buckling and dynamic characteristics of composite plates under pressure load

Xuan Yang,Qingguo Fei,Shaoqing Wu,Yanbin Li 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.8

The effect of geometrical nonlinearities due to pressure load on the thermal buckling and dynamic characteristics of composite plates are investigated in this paper, which is the main contribution of this research work. The mechanical behavior of the plate is described with the first-order shear deformation theory. The geometrical nonlinearity due to both thermal effect and pressure load is introduced in the finite element model of the plate via additional stiffness matrices. Thermal buckling and modal analysis of a four-sided simply supported rectangular composite plate under different pressure fields are conducted. Numerical results show that both the mode frequencies and critical buckling temperature of the plate rise with the increase of the pressure. The vibrational mode shapes change with the gradient pressure load field. The maximum buckled deflection point moves from the center to the place where is easier to reach compressive stress state under uniform thermal load. The pressure distribution has a significant effect on the buckling mode shapes of the plate.

Pipeline defect detection with depth identification using PZT array and time-reversal method

Yang Xuan,Mingzhang Luo,Guo-Feng Du 국제구조공학회 2023 Smart Structures and Systems, An International Jou Vol.32 No.4

The time-reversal method is employed to improve the ability of pipeline defect detection, and a new approach of identifying the pipeline defect depth is proposed in this research. When the L(0,2) mode ultrasonic guided wave excited through a lead zirconate titinate (PZT) transduce array propagates along the pipeline with a defect, it will interact with the defect and be partially converted to flexural F(n, m) modes and longitudinal L(0,1) mode. Using a receiving PZT array attached axisymmetrically around the pipeline, the L(0,2) reflection signal as well as the mode conversion signals at the defect are obtained. An appropriate rectangle window is used to intercept the L(0,2) reflection signal and the mode conversion signals from the obtained direct detection signals. The intercepted signals are time reversed and re-excited in the pipeline again, result in the guided wave energy focusing on the pipeline defect, the L(0,2) reflection and the L(0,1) mode conversion signals being enhanced to a higher level, especially for the small defect in the early crack stage. Besides the L(0,2) reflection signal, the L(0,1) mode conversion signal also contains useful pipeline defect information. It is possible to identify the pipeline defect depth by monitoring the variation trend of L(0,2) and L(0,1) reflection coefficients. The finite element method (FEM) simulation and experiment results are given in the paper, the enhancement of pipeline defect reflection signals by time-reversal method is obvious, and the way to identify pipeline defect depth is demonstrated to be effective.

Taxonomic Notes of Subfamily Olethreutinae (Lepidoptera: Tortricidae) in the North Vietnam

Le Xuan Vi,Pham Thi Vuong,Do-Young Chae,Yang-Seop Bae 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05

Leaf roller moths Olethreutinae is the second largest subfamily in Tortricidae, comprising worldwide more than 4,300 species (Horak, 2006). Of which, 465 species of 88 genera in South Asia (Diaknoff, 1973). In Vietnam, when studying on fauna of the agricultural pests, National Institute of Plant Protection (NIPP) recorded only 4 Tortricidae species (1977-1978), and 3 Tortricidae species (1997- 1998). From 1996 to 2001. Kuznetzov reported two new genera Fibuloides gen. nov., Pammenpsis gen. nov., and 19 species of Olethreutinae. He also has created a list of 208 Tortricidae species in the North Vietnam. Recently, Razowski recorded 33 species, 11 genera (2008), he (2009) also reported 107 species, 61 genera, of which 61 species of 41 genera belong to Olethreutinae in the North Vietnam. Of which, 25 species are described as new to science, 13 species are new to Vietnam. In the present study, we are briefly reviewed of subfamily Olethreutinae in North Vietnam. We recognized 105 species of 51 genera. Of them, 50 species are reported for the first time from North Vietnam such as: Andrioplecta pulverula Meyrick, 1912; Cryptophlebia repletana Walker, 1863; Dactylioglypha tonica (Meyrick, 1909); Lobesia aelopa Meyrick, 1997; Lobesia ambigua Diaknoff, 1954, etc. The materials identification base on the collection of University of Incheon, which has collected in North Vietnam from 2004-2009.