高校校园法律风险防范及对策探讨

周伟 ( Zhou-wei ),袁一鸣 ( Yuan-yiming ) 경상대학교 교육연구원(구 경상대학교 중등교육연구소) 2020 중등교육연구 Vol.32 No.2

近年来在中国高校校园中校园法律风险事故频发,引起了社会的高度关注。校园事故发生的形式和诱发因素甚多。校园事故大体可以分为校园欺凌、师生冲突、学校与家长的冲突(家校冲突)、校园套路贷款等。在众多事故中大致可以分为三类角色,一是事故的当事人,即高校学生;二是学生家长;三是作为学生校园行为监管者的学校。我们需对校园风险事故发生的成因进行细致分析,明确事故中各类角色应当责任承担和应尽的义务。以此提出可行的对策, 制定高校校园法律风险的防范对策最根本也是最重要的,加强学生身心健康教育,让学生对校园欺凌、对损害自己合法权益的行为大声说不,尽可能降低此类事故发生概率,防范校园风险事故的再次发生。此外在发生高校校园法律风险事故后,如何明确各法律主体责任也成为必须明确的重要问题。 In recent years, campus legal risk accidents occur frequently in the campus of colleges and universities in China, which has aroused great concern of the society. There are many forms and inducing factors of campus accidents. Campus accidents can be divided into campus bullying, conflicts between teachers and students, conflicts between schools and parents (home school conflicts), campus routine loans, etc. There are three kinds of roles in many accidents, one is the Party of the accident, that is, college students; the second is the parents of students; the third is the school as the supervisor of students' campus behavior. We need to make a detailed analysis of the causes of campus risk accidents, and clarify the responsibilities and obligations of various roles in the accidents. In order to put forward feasible countermeasures, the most fundamental and most important is to strengthen students' physical and mental health education, let students say no to campus bullying and damaging their legitimate rights and interests, reduce the probability of such accidents as far as possible, and prevent the recurrence of campus risk accidents. In addition, after the occurrence of campus legal risk accidents, how to clarify the legal subject responsibility has become an important issue.

Mechanical, Thermal, and Swelling Properties of Cross-linked Hydrogels Based on Oxidized Cellulose Nanowhiskers and Chitosan/poly(vinyl alcohol) Blends

Chao Sheng,Yiming Zhou,Xinyu Zhang,Guoxin Xue 한국섬유공학회 2018 Fibers and polymers Vol.19 No.10

Cross-linked hydrogels of chitosan/poly(vinyl alcohol) (PVA)/oxidized cellulose nanowhiskers (CNWs) were prepared by using oxidized CNWs as a cross-linker. The effects of the oxidation level of CNWs on the swelling behavior, thermal stability, viscoelastic properties and compressive strength of the hydrogels were studied. Chemical cross-links, hydrogen bonds, as well as nanofiller reinforcement between the three materials played a major role in determining the properties of the hydrogels. Swelling test results showed that the incorporation of oxidized CNWs decreased the water absorbability of the hydrogels due to the increase in cross-linking degree. Viscoelastic properties of the hydrogels with oxidized CNWs was increased by 537 % in storage modulus, from 4.65 kPa to 29.6 kPa. Compressive strength of 181.5 kPa at 50 % strain was observed from the cross-linked hydrogels, compared with 21.2 kPa of the non-cross-linked hydrogels. The thermal experiments showed that the chemical cross-linking slightly increase the resistance toward thermal degradation of the hydrogels.

SYNTHESIS OF PEG-ENCAPSULATED SUPERPARAMAGNETIC COLLOIDAL NANOCRYSTALS CLUSTERS

HUI WANG,YIMING LI,ZHAOFENG LUO,SHUAI ZHOU,JIN SHENG,QIANWANG CHEN 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2010 NANO Vol.5 No.6

PEG-encapsulated colloidal nanocrystal clusters (CNCs) have been synthesized via a one-step solvothermal process at a temperature of 230°C. The composition, phase, and morphology of these CNCs have been characterized by X-ray diffraction and transmission electron microscopy. Studies show that each particle is a cluster structure consisting of small primary iron oxide nanocrystals. Magnetic measurements reveal the superparamagnetic nature of these CNCs at room temperature. The CNCs with different sizes (80 nm or 95 nm) can be obtained by changing the time of reaction. The dispersibility and colloidal stability of these CNCs with PEG as the major surface group have also been discussed. In vitro cytotoxicity of these CNCs with different thickness PEG layer on HeLa cell has also been assayed. Cytotoxicity results reveal that the CNCs concentration and the incubation time can influence the cell viability, and the size of CNCs almost does not affect the cell viability.

Tissue distribution of marbofloxacin in pigs after a single intramuscular injection

Fan Yang,Yiming Liu,Zhili Li,Yuqin Wang,Baobao Liu,Zhensheng Zhao,Bianhua Zhou,Guoyong Wang 대한수의학회 2017 Journal of Veterinary Science Vol.18 No.2

Tissue distribution of marbofloxacin was studied in pigs after a single intramuscular injection at 2.5 mg/kg body weight. Samples of plasma, muscle, liver, kidney, heart, lung, and muscle at the injection site were randomly collected from five pigs at 2, 6, 10, 24, 48, 72, and 96 h after administration. Marbofloxacin concentrations were determined by using high-performance liquid chromatography with ultraviolet detection and were subjected to non-compartmental analysis to obtain kinetic parameters. The elimination half-life (t1/2lz) of marbofloxacin at the injection site was 22.12 h, while those in kidney, plasma, liver, lung, heart, and muscle were 16.75, 21.48, 21.84, 24.00, 24.45, and 28.91 h, respectively. Areas under the concentration-time curve from 0 h to ∞ (AUC0–∞s) were calculated to be 31.17 hㆍmgㆍmL−1 for plasma and 32.97, 33.92, 34.78, 37.58, 42.02, and 98.80 hㆍmgㆍg−1 for heart, muscle, lung, liver, kidney, and injection site, respectively. The peak concentration (Cmax) of marbofloxacin was 1.62 µg/mL in plasma and 1.71, 1.74, 1.86, 1.93, 2.45, and 7.64 µg/g in heart, lung, muscle, kidney, liver, and injection site, respectively. The results show that marbofloxacin was fast absorbed, extensively distributed, and slowly eliminated from pigs after a single intramuscular administration.

Improved Subgraph Estimation PageRank Algorithm for Web Page Rank

Lanying Li,Qiuli Zhou,Yin Kong,Yiming Dong 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.11

The traditional PageRank algorithm can’t efficiently dispose large data Webpage scheduling problem. This paper proposes an accelerated algorithm named topK-Rank .It is based on PageRank on the MapReduce platform. Owing to this algorithm ,Top k nodes can be found efficiently for a given graph without sacrificing accuracy. It can iteratively estimate lower/upper bounds of PageRank scores, and construct subgraphs in each iteration by pruning unnecessary nodes and edges. Theoretical analysis shows that this method guarantees result exactness. Experiments show that it can find top k nodes much faster than the existing approaches.

Customized product design information feedback technology based on tentative design chain reconstruction

Lemiao Qiu,Huifang Zhou,Zili Wang,Yiming Zhang,Shuyou Zhang,Longwu Pan 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.12

The design process of customized products involves dynamic feedback on customer requirements, design alterations, design knowledge, and other information. Current technologies for designing customized products focus on implementing product functions, but are short of effective support for design information feedback. The paper introduces a feedback technology of customized product design information based on tentative design chain reconstruction, whereby a tentative design chain and a corresponding design assignment matrix (DAM) are built in accordance with the logical relationship between the design assignments of the customized product. The tentative design chain is reconstructed through matrix decomposition to optimize the implementation path of the design assignments. Based on the reciprocal relationship between information transfer and feedback path for the design of a customized product, the feedback path of the customized product design information is extracted. The implementation method for feedback are put forward so that the design strategy of the customized product can be adjusted promptly with the feedback information between assignments. The feedback technology of the customized product design information based on the tentative design chain reconstruction is verified by application in the design of the elevator traction sheave. The results show that it helps to reduce the degree of the cross correlation between design assignments, and simplifies the design process of the elevator traction wheel.

Mechanical Behavior of Reinforced Embankment with Different Recycling Waste Fillers

Lihua Li,Hongzhi Sheng,Henglin Xiao,Xinlong Zhou,Yiming Liu 대한토목학회 2022 KSCE Journal of Civil Engineering Vol.26 No.8

The application of construction and demolition (C&D) waste and used tires in geotechnical engineering contributes to the demand of the sustainable development. This study mainly compared the mechanical behavior of pure sand embankment (PSE), C&D material embankment (CDME), sand-tire shreds mixture embankment (STSME) through a scale model test. Effects of tire shreds content, the first layer geocell reinforcement burial depth, geocell reinforcement depth and compaction degree on the bearing capacity of embankments were investigated. Moreover, embankment load-settlement ratio, the reinforced bearing capacity ratio, the bearing capacity improvement factor (IF), the embankment surface deformation, and the vertical earth pressure distribution inside the embankment were discussed. Results indicate that both C&D material fillers and sand-tire shreds mixture can improve the bearing capacity and stability of embankment slopes. However, C&D material is better than sand-tire shreds mixture in the improvement. The optimum value of tire shreds content is 5%. The reinforcement effect of geocell decreases with the increase of reinforcement depth. With the increase of the buried depth of the first layer, it first increases and then decreases. With the increase of compaction degree increases. The minimum earth pressure appears near the slope. The bearing capacity of CDME is greater than STSME. The ultimate bearing capacity of CDME under the action of the geocell is twice that of the unreinforced embankment.

Static Stability Analysis of Single-Layer Reticulated Spherical Shell with Kiewitt-Sunflower Type

Peng Yu,Weijing Yun,Stéphane Bordas,Sheng He,Yiming Zhou 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.5

In this study, we use a large-scale parameter analysis and linear regression method to characterize the static stability of Kiewitt-sunfl ower-type single-layer reticulated spherical shell. Based on more than 15,000 numerical cases of elastic–plastic load–displacement process, and the investigations on the infl uence of buckling and instability mode, rise-span and ringnumbers ratio, effi ciency of the structure, load distribution, support conditions, size of the initial geometric imperfection and distribution patterns are proceeded. We summarize the key eff ect for stable performance of structure, and develop the formulation to calculate the ultimate capacity of stability. The results show that Kiewitt-sunfl ower type single-layer reticulated spherical shell is sensitive to defect, and diff erent distribution patterns of geometry defect lead to diff erent structural buckling. The ultimate stability bearing capacity can be improved by increasing the rise-span and ring-numbers ratio. The asymmetrical load distribution has little eff ect on the stability. The most unfavorable eigenmode is arbitrary, and it is generally not the lowest order. We summarize the key eff ect for stable performance of structure, and develop the formulation to calculate the ultimate capacity of stability.

Prestress Tension Measurement Using a Single Electromagnetic Sensor

Xiao Guo,Nianchun Deng,Mengsheng Yu,Mohamed Elchalakani,Yiming Zhou 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.10

Elasto-magnetic sensors are widely used to measure the tensile force of cable structures. Generally, the size of current elasto-magnetic sensors is designed to be large enough to measure the tensile force of the entire cable. Therefore, the tensile force of a single steel strand in cables cannot be measured, which causes some engineering problems, such as that the uniformity of prestress tension and forces within steel cables cannot be determined. In this study, a single-strand elasto-magnetic sensor, called the EM17 sensor, is proposed to detect and monitor the tensile force of single steel strands. EM17 is the smallest sensor developed to date, with an inner diameter of 17 mm. In addition, a series of experiments were conducted to investigate the effects of temperature, position, shielding environment, strand relaxation, strand fatigue and sensor sealing performance on sensor accuracy. The field tests show that the EM17 sensors can accurately measure the tensile force of steel strands. The results show that the uniformity of the prestressed steel strand and the error between measurement and target values are within the range of 5%, which is considered satisfactory.

IRE1α protects against osteoarthritis by regulating progranulin-dependent XBP1 splicing and collagen homeostasis

Liang Li,Zhang Fengmei,Feng Naibo,Kuang Biao,Fan Mengtian,Chen Cheng,Pan Yiming,Zhou Pengfei,Geng Nana,Li Xingyue,Xian Menglin,Deng Lin,Li Xiaoli,Kuang Liang,Luo Fengtao,Tan Qiaoyan,Xie Yangli,Guo Fen 생화학분자생물학회 2023 Experimental and molecular medicine Vol.55 No.-

Osteoarthritis (OA) is a full-joint, multifactorial, degenerative and inflammatory disease that seriously affects the quality of life of patients due to its disabling and pain-causing properties. ER stress has been reported to be closely related to the progression of OA. The inositol-requiring enzyme 1α/X-box-binding protein-1 spliced (IRE1α/XBP1s) pathway, which is highly expressed in the chondrocytes of OA patients, promotes the degradation and refolding of abnormal proteins during ER stress and maintains the stability of the ER environment of chondrocytes, but its function and the underlying mechanisms of how it contributes to the progression of OA remain unclear. This study investigates the role of IRE1α/ERN1 in OA. Specific deficiency of ERN1 in chondrocytes spontaneously resulted in OA-like cartilage destruction and accelerated OA progression in a surgically induced arthritis model. Local delivery of AdERN1 relieved degradation of the cartilage matrix and prevented OA development in an ACLT-mediated model. Mechanistically, progranulin (PGRN), an intracellular chaperone, binds to IRE1α, promoting its phosphorylation and splicing of XBP1u to generate XBP1s. XBP1s protects articular cartilage through TNF-α/ERK1/2 signaling and further maintains collagen homeostasis by regulating type II collagen expression. The chondroprotective effect of IRE1α/ERN1 is dependent on PGRN and XBP1s splicing. ERN1 deficiency accelerated cartilage degeneration in OA by reducing PGRN expression and XBP1s splicing, subsequently decreasing collagen II expression and triggering collagen structural abnormalities and an imbalance in collagen homeostasis. This study provides new insights into OA pathogenesis and the UPR and suggests that IRE1α/ERN1 may serve as a potential target for the treatment of joint degenerative diseases, including OA.