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A Method of Description on the Data Association Based on Granulation Trees
Yan Shuo,Yan Lin 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.2
To investigate the association of data with other data in reality, the research begins with data sets which are divided into different partitions. Because each partition consists of granules and owns a level, all the partitions constitute a granulation set whose elements are the granules. As a hierarchy system, the granulation set together with the inclusion relation gives rise to a structure called a granulation tree. The research on the data association establishes a method to describe the associations of the data in a granulation tree with the data in another granulation tree. The method involves a necessary and sufficient condition used to check the data associations. Because the necessary and sufficient condition is bound up with the upper approximation, the study also develops a way of investigation into rough sets. As an example, a practical problem is modeled by granulation trees, and the associations of the data in a granulation tree with the data in another granulation tree can be examined by use of the necessary and sufficient condition. Meanwhile, because the study is closely linked to granules and alterations of granularity, the process can be viewed as an approach to research on granular computing
연경석(Jing-Shuo Yan),최승욱(Seung-Uk Choi) 강원대학교 경영경제연구소 2021 Asia-Pacific Journal of Business Vol.12 No.3
Purpose - This study investigates the effect of auditor change on client firm’s accounting (financial statement) comparability. Design/methodology/approach - The comparability of accounting information is measured by the difference in accruals between the two firms. Additionally, the study uses earnings-stock return relationship as another proxy of accounting comparability. In particular, the paper examines whether there is a systematic difference between initial audit years and the other years with respect to the client firm’s accounting comparability. Moreover, current study tests how changes in auditor size or industry expertise before and after the switch of auditors affect the accounting comparability. Findings - The results show that the level of accounting comparability is lower in the year of auditor change than in the other years. Furthermore, this lower level of comparability is derived by the observations that switch their auditors from non-Big4 to non-Big4 or from non-specialist to non-specialist. These results are consistent when accounting comparability is measured by different proxies. Research implications or Originality - The findings of this study provide important policy implications for the regulations related with auditor selection.
시뮬레이션을 통한 외기보상제어 기반 공동주택 바닥복사난방 실별 제어의 적용성 연구
설염(Yan Xue),장휴산(Hyu San Jang),유석(Shuo Liu),이태하(Tae Ha Leight),정창호(Chang Ho Jeong),여명석(Myoung Souk Yeo) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
As a high-efficiency and energy-saving heating method, district heating has attracted more and more people’s attention. However, when planning or operating the heating system, people always design based on experience without considering the actual heating load of the residential building. If this happens, many rooms will overheat due to excessive heat supply, resulting in a waste of energy. In order to reduce the energy waste caused by such situation, this paper simulates and compares the direct use of the water from the secondary side of the district heating as supply water to indoor heating equipment and the installation of a heat exchanger before entering the indoor heating equipment to obtain low-temperature water as supply water. The simulation results show that both control methods can control the indoor temperature well. And the second method saves 7% of energy consumption compared with the first method.
Yang, Shuo,Zhang, Jing,Jiang, Yang,Xu, Yuan Qing,Jin, Xiao,Yan, Su Mei,Shi, Bin Lin Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.7
Objective: This research aimed to study the effects of Artemisia argyi flavonoids (AAF) supplemented in diets on the growth performance and immune function of broiler chickens challenged with lipopolysaccharide (LPS). Methods: A total of one hundred and ninety-two 1-d-old broiler chicks were assigned into 4 treatment groups, which were, respectively, fed a basal diet (control), fed a diet with 750 mg/kg AAF, fed a basal diet, and challenged with LPS, fed a diet with 750 mg/kg AAF, and challenged with LPS. Each treatment had six pens with 8 chicks per pen. On days 14, 16, 18, 20 (stress phase I) and 28, 30, 32, 34 (stress phase II), broilers were injected with LPS (500 ㎍/kg body weight) or an equivalent amount of saline. Results: The results demonstrated that dietary AAF significantly improved the body weight (d 21) and alleviated the decrease of average daily gain in broilers challenged with LPS on d 21 and d 35 (p<0.05). Dietary AAF increased bursa fabricius index, and dramatically attenuated the elevation of spleen index caused by LPS on d 35 (p<0.05). Furthermore, serum interleukin-6 (IL-6) concentration decreased with AAF supplementation on d 21 (p<0.05). Diet treatment and LPS challenge exhibited a significant interaction for the concentration of IL-1β (d 21) and IL-6 (d 35) in serum (p<0.05). Additionally, AAF supplementation mitigated the increase of IL-1β, IL-6 in liver and spleen induced by LPS on d 21 and 35 (p<0.05). This study also showed that AAF supplementation significantly reduced the expression of IL-1β (d 21) and nuclear transcription factor kappa-B p65 (d 21 and 35) in liver (p<0.05), and dietary AAF and LPS treatment exhibited significant interaction for the gene expression of IL-6 (d 21), toll like receptor 4 (d 35) and myeloid differentiation factor 88 (d 35) in spleen (p<0.05). Conclusion: In conclusion, AAF could be used as a potential natural immunomodulator to improve growth performance and alleviate immune stress in broilers challenged with LPS.
Tian, Shuo,Huang, Yan,Lai, Dong,Wang, Hanfeng,Du, Songliang,Shen, Donglai,Chen, Weihao,Xuan, Yundong,Lu, Yongliang,Feng, Huayi,Zhang, Xiangyi,Zhao, Wenlei,Wang, Chenfeng,Wang, Tao,Wu, Shengpan,Huang, Techno-Press 2022 Advances in nano research Vol.12 No.6
The prolyl 3-hydroxylase family member 4 (P3H4), is associated with post-translational modification of fibrillar collagens and aberrantly activated in cancer leading to tumor progression. However, its role in clear cell renal cell carcinoma (ccRCC) is still unknown. Here we reported that P3H4 was highly expressed in renal cancer tissues and significantly positive correlated with poor prognosis. Knockdown of P3H4 inhibited the proliferation, migration and metastasis of renal cancer cells in vitro and in vivo, and also, overexpression of it enhanced the oncogenic process. Mechanistically, P3H4 depletion decreased the levels of GDF15-MMP9 axis and repressed its downstream signaling. Further functional studies revealed that inhibition of GDF15 suppressed renal cancer cell growth and GDF15 recombinant human protein (rhGDF15) supplementation effectively rescued the inhibitory effect induced by P3H4 knockdown. Moreover, decreased levels of MMP9 caused by inhibition of P3H4-GDF15 signaling constrained the expression of PD-L1 and suppression of P3H4 accordingly promoted anti-tumor immunity via stimulating the infiltration of CD4+ and CD8+ T cells in syngeneic mice model. Taken together, our findings firstly demonstrated that P3H4 promotes ccRCC progression by activating GDF15-MMP9-PD-L1 axis and targeting P3H4-GDF15-MMP9 signaling pathway can be a novel strategy of controlling ccRCC malignancy.
Dual 코일 하이브리드 제습 냉방 시스템 제안 및 성능 분석
유석(Shuo Liu),설염(Yan Xue),장휴산(Hyu San Jang),이태하(Tae Ha Leigh),정창호(Chang Ho Jeong),여명석(Myoung Souk Yeo) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
Currently, the design and development of air conditioning systems increasingly requires consideration of indoor comfort, which makes the control of indoor humidity particularly important. Considering the miniaturization and complexity of the system structure, a heat pump assisted hybrid desiccant cooling system (HPDC system) using condenser waste heat to regenerate the desiccant was proposed in the previous study. Based on the problem of uncontrollable outlet temperature of this system, this paper has proposed an improved dual coil HPDC system and the corresponding system control logic and performed the thermal energy analysis by EnergyPlus software. The results show that the proposed system is able to maintain both the design indoor temperature and humidity. With the control logic, the increase in the number of cooling coil did not increase the cooling thermal energy consumption of the system, on the contrary, it was reduced by 2.1% compared to the previous system. But the design capacity of the second cooling coil should be larger than that of the previous system.