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.

Magnetohydrodynamic flows in a dis-aligned duct system under a uniform magnetic field

Luo, Yang,Zhu, Mengqi,Kim, Chang Nyung 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.2

<P>In the present study, three-dimensional Magnetohydrodynamic (MHD) Liquid-metal (LM) flows in a dis-aligned duct system under a uniform magnetic field are investigated by numerical method. Computational fluid dynamics (CFD) simulations are carried out to analyzed the characteristics of the MHD flows and to examine the inter-relationship of the LM velocity, current density, electric potential and pressure, using CFX. The duct system consists of two dis-aligned parallel channels (One inflow channel and one outflow channel) and one channel connecting the above channels. In the present study, cases with different lengths of the connecting channel are considered. Because of the inertial force therein, a velocity recirculation is found in the region just after the first turning, resulting in a region of peak value in electric potential together with complex distribution of the current. Also, another velocity recirculation is seen in the region just after the second turning, creating another region of peak value in electric potential. In a situation where the magnetic field is applied in a direction perpendicular to the plane of the main flow in a dis-aligned duct system, until the fluid reaches an edge, the velocity component parallel to the magnetic field converges, with an increasing in the peak value of the side layer velocity, and then, after the fluid passes the edge, the velocity component parallel to the magnetic field diverges, with a decrease in the peak value of the side layer velocity. Oppositely, until the fluid reaches a corner, the velocity component parallel to the magnetic field diverges, with a decrease in the peak value of the side layer velocity, and then, after the fluid passes the corner, the velocity component parallel to the magnetic field converges, with an increase in the peak value of the side layer velocity. It is found that this type of velocity pattern is closely associated with the current distribution in the region of right-angle segments in the sense that the magnitude of the electromotive component of electric current is proportional to the fluid velocity.</P>

Directions for the Korean Social INTEGRATION Policy Index Development

Yang Luo,Eunsook Seo J-INSTITUTE 2021 Public Value Vol.6 No.1

Purpose: As South Korea enters a multicultural society, the importance of a reasonable and effective social integration policy system has been emphasized. The evaluation of social integration policies can promote policy improvement and improve policy effects. The purpose of this study is to analyze the limitations of the application of MIPEX in the evaluation of the Korean social integration policy and to give suggestions about the developing direction of South Korea's social integration policy index. Method: This study starts with the MIPEX’s analysis of South Korea to understands the advantages and dis-advantages of Korean immigrant social integration policy. On the other hand, there are certain limits in MIPEX’s evaluation and practical application in South Korea, so by observation and analysis of MIPEX and comparison of integration policies of South Korea and other countries, suggestions are made for the development of a social integration policy index that meets the conditions of South Korea. Results: Although South Korea’s immigrant social integration policy is in a leading position in Asia especially in multicultural education area but compared to the Top countries in MIPEX, some improvement still need to be made. It was showing a trend of regression with increased difficulty in obtaining permanent residency. MIPEX's completely Europe-centered evaluation standards, ignoring illegal immigrants and only focusing on legal immi-grants, and ignoring the actual implementation of policies are all reasons for its limitations of application in South Korea. Conclusion: It is necessary to consider the conditions of South Korea and formulate policy indicators that conform to the society during the development of the Korean social integration policy index. The targets of the social integration policy should include all immigrants, and the actual implementation of the policy should be reflected in the evaluation. According to the specific conditions of the country, citizen participation, gender equality, and social security are policy elements that can be added to the index.

De novo genome assembly and annotation of Holothuria scabra (Jaeger, 1833) from nanopore sequencing reads

Luo Honglin,Huang Guanghua,Li Jianbin,Yang Qiong,Zhu Jiajie,Zhang Bin,Feng Pengfei,Zhang Yongde,Yang Xueming 한국유전학회 2022 Genes & Genomics Vol.44 No.12

Background: Holothuria scabra is a costly gourmet and traditional Chinese tonic medicine. However, the lack of high-quality genome information hinders the genetic, phylogenetic, and bioactivator researches. Objective: To construct high-quality genomic data of H. scabra and conduct genome-wide phylogenetic analysis. Methods: The whole genome of a male H. scabra was sequenced based on Nanopore MinION platform, and the sequence was assembled by wtdbg2. Transcriptome sequencing was used to aid the gene annotation. Repeat sequences, non-coding RNA, pseudogene and gene functional annotation were analyzed. 750 single-copy gene families from ten species were applied to construct phylogenetic tree for evolutionary analysis by using the ML method. Results: The H. scabra genome of 1.18 Gb (N50 = 1557,492 bp) with 500.42 Mb of putative repetitive sequences was assembled from a male H. scabra individual, and 16,642 protein-coding genes, 951 pseudogenes, 1791 motifs and 45,400 domains from the generated assembly were identified. The divergence time between H. scabra and its ancestor was estimated approximately 192.6 million years ago. H. scabra and A. japonicas joined together while sea urchin and sea star diverged about 440 Mya ago. Some key genes involved in notochord and gill slits development, skeleton degeneration and nervous system, as well as homeobox genes differ between H. scabra and Apostichopus japonicas. Conclusion: We report the first whole genome of H. scabra with expectation that this will be a valuable resource for genetic, phylogenetic, breading, molecular biology and bioactivator studies of sea cucumbers and other invertebrates.

Vγ1+ γδT Cells Are Correlated With Increasing Expression of Eosinophil Cationic Protein and Metalloproteinase-7 in Chronic Rhinosinusitis With Nasal Polyps Inducing the Formation of Edema

Luo-ying Yang,Xia Li,Wen-ting Li,Jian-cong Huang,Zhi-yuan Wang,Zi-zhen Huang,Li-hong Chang,Ge-hua Zhang 대한천식알레르기학회 2017 Allergy, Asthma & Immunology Research Vol.9 No.2

Purpose: We have found that expression of γδT cells is increased in pathological mucosa of chronic rhinosinusitis with nasal polyps (CRSwNP) compared with normal nasal mucosa. This increase is correlated with the infiltration of eosinophils in CRSwNP. Here, we investigated the expression of γδT cells, inflammation and tissue remodeling factors as well as their probable relationships in different types of chronic rhinosinusitis (CRS) in China. Methods: A total of 76 surgical tissue samples that included 43 CRSwNP samples (15 eosinophilic and 28 non-eosinophilic), 17 CRS samples without nasal polyps (CRSsNP), and 16 controls were obtained. Quantitative reverse transcription-polymerase chain reaction (RT-PCR) was used to measure the mRNA expression levels of Vγ1+ γδT cells, Vγ4+ γδT cells, eosinophil cationic protein (ECP), interleukin (IL)-8, transforming growth factor (TGF)-β2, metalloproteinase (MMP)-7, tissue inhibitor of metalloproteinase (TIMP)-4 and hypoxia-inducible factor (HIF)-1α. Enzyme linked immunosorbent assay (ELISA) was used to measure the protein level of ECP and MMP-7 in CRSwNP. The eosinophils were counted and the level of edema was analyzed with HE staining. Results: The mRNA expression levels of the Vγ1 subset, ECP and MMP-7 were significantly increased in CRSwNP with histological characteristics of eosinophilic infiltration and edema. The expression of the Vγ1 gene in CRSwNP correlated positively with the expression of both ECP and MMP-7. No significant decreases in the mRNA expression levels of TGF-β2, TIMP-4 or HIF-1α were observed in the CRSwNP samples. The expression levels of Vγ1 gene, ECP and MMP-7 were significantly increased in eosinophilic CRSwNP compared to non-eosinophilic CRSwNP. Conclusions: Our results suggest the associations between Vγ1+ γδT cells, ECP and MMP-7 in CRSwNP, indicating that Vγ1+ γδT cells can induce the eosinophilic inflammation, which has a further effect on the formation of edema.

Collaborative Modeling of Medical Image Segmentation Based on Blockchain Network

Yang Luo,Jing Peng,Hong Sun,Tao Wu,Xi Wu 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.3

Due to laws, regulations, privacy, etc., between 70-90 percent of providers do not share medical data, forming a "data island". It is essential to collaborate across multiple institutions without sharing patient data. Most existing methods adopt distributed learning and centralized federal architecture to solve this problem, but there are problems of resource heterogeneity and data heterogeneity in the practical application process. This paper proposes a collaborative deep learning modelling method based on the blockchain network. The training process uses encryption parameters to replace the original remote source data transmission to protect privacy. Hyperledger Fabric blockchain is adopted to realize that the parties are not restricted by the third-party authoritative verification end. To a certain extent, the distrust and single point of failure caused by the centralized system are avoided. The aggregation algorithm uses the FedProx algorithm to solve the problem of device heterogeneity and data heterogeneity. The experiments show that the maximum improvement of segmentation accuracy in the collaborative training mode proposed in this paper is 11.179% compared to local training. In the sequential training mode, the average accuracy improvement is greater than 7%. In the parallel training mode, the average accuracy improvement is greater than 8%. The experimental results show that the model proposed in this paper can solve the current problem of centralized modelling of multicenter data. In particular, it provides ideas to solve privacy protection and break "data silos", and protects all data.

Elements of Multicultural Sensitivity as Digital Literacy - A Solution to Digital Divide and Violence

( Luo Yang ),( Seo Eun Sook ) 한국윤리학회 2022 倫理硏究 Vol.137 No.1

The advancement of digital technology has resulted in numerous opportunities as well as challenges. In Korea, adolescents are confronted with major ethical issues such as the digital divide and digital violence arising from bias and discrimination, and it is vital to reflect multicultural sensitivity in digital literacy and to improve the multicultural sensitivity of adolescents. Therefore, through a review of previous literature and an analysis of the present status and causes of the digital divide and digital violence of adolescents, this study proposes to implant five elements of multicultural sensitivity include embracing cultural diversity, respecting others, living harmoniously, reflecting on bias and discrimination, becoming digital-multicultural citizens into digital literacy, and provides a new direction for digital literacy education for adolescents.

A controllable single-molecule single-photon source

Yang LUO,Yao ZHANG,Li ZHANG,Yunjie YU,Yanmin KUANG,Qiushi MENG,Yang ZHANG,Zhenchao DONG 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

Effects of Xylanase on Performance, Blood Parameters, Intestinal Morphology, Microflora and Digestive Enzyme Activities of Broilers Fed Wheat-based Diets

Luo, Dingyuan,Yang, Fengxia,Yang, Xiaojun,Yao, Junhu,Shi, Baojun,Zhou, Zhenfeng Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.9

The study was conducted to investigate the effects of different levels of xylanase on performance, blood parameters, intestinal morphology, microflora and digestive enzyme activities of broilers. The wheat-based diets were supplemented with 0, 500, 1,000, 5,000 U/kg xylanase. Xylanase supplementation significantly (p<0.05) improved the feed:gain ratio of broilers from 1 to 21 d and 1 to 42 d. Supplementing 500 U/kg and 1,000 U/kg xylanase improved (p<0.05) the villus height and the ratio of villus height to crypt depth in the small intestine. Excess supplementation of xylanase (5,000 U/kg) increased the villus height in the ileum (p<0.01) and the ratio of villus height to crypt depth in the duodenum and ileum (p<0.05). The microflora in the ileum and caecum, digestive enzyme activities in the small intestine and the concentrations of serum glucose, uric acid, insulin and IGF-I were not affected by the supplementation of xylanase. Excess level of xylanase (5,000 U/kg) had a tendency to induce the multiplication of E. coli and total aerobes. The results suggested that supplementing 500 U/kg and 1,000 U/kg xylanase was beneficial for broilers and excess xylanase supplementation resulted in no further improvement or negative effects.

Accurate measurement of residual stresses of 2219-T87 aluminum alloy friction stir welding joints based on properties of joints

Yang Du,Huan Li,Lijun Yang,Chuanguang Luo 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.1

In order to avoid the deviation caused by calculating the residual stresses of welding joints with the release coefficients of the same parent metal, a new method has been proposed based on the properties of weld joints. Since the mechanical property of 2195-F Al alloy is close to that of 2219-T87 Al alloy Friction stir welding (FSW) joint, 2195-F Al alloy is selected as the substitute material of 2219-T87 Al alloy FSW joint in the calibration test. Release coefficients of 2195-F Al alloy and proper correction coefficient are used to calculate the residual stresses of 2219-T87 Al alloy FSW joints. Compared to the results calculated with release coefficients of its parent metal, it has been proved that the proposed correction method is more precise in residual stresses measurement of weld joints. The mathematical analysis and the results of verification tests have shown that this new method is reliable, and it will provide guidance in academic research and engineering application of the spherical indentation strain-gauge method.