Semidistributive Inverse Semigroups, II

The description by Johnston-Thom and the second author of the inverse semigroups S for which the lattice LJ(S) of full inverse subsemigroups of S is join semidistributive is used to describe those for which (a) the lattice L(S) of all inverse subsemigroups or (b) the lattice lo(S) of convex inverse subsemigroups have that property. In contrast with the methods used by the authors to investigate lower semimodularity, the methods are based on decompositions via GS, the union of the subgroups of the semigroup (which is necessarily cryptic)

Lower Semimodular Inverse Semigroups, II

The authors’ description of the inverse semigroups S for which the lattice ℒℱ(S) of full inverse subsemigroups is lower semimodular is used to describe those for which (a) the lattice ℒ(S) of all inverse subsemigroups or (b) the lattice �o(S) of convex inverse subsemigroups has that property. In each case, we show that this occurs if and only if the entire lattice is a subdirect product of ℒℱ(S) with ℒ(E S ), or �o(E S ), respectively, where E S is the semilattice of idempotents of S; a simple necessary and sufficient condition is found for each decomposition. For a semilattice E, ℒ(E) is in fact always lower semimodular, and �o(E) is lower semimodular if and only if E is a tree. The conjunction of these results leads to quite a divergence between the ultimate descriptions in the two cases, ℒ(S) and �o(S), with the latter being substantially richer

Numerical Analysis of Indoor Air Quality in Hospital Case Study: Bronchoscopy Unit

This paper presents three ventilation scenarios for a bronchoscopy unit using a numerical study. A Fire Dynamics Simulator (FDS) is employed for this purpose. The results obtained are visualized using Smokeview (SMV), which is a program for displaying FDS results. The numerical results are compared with experimental ones from Cheong and Phua’s research study. This study was chosen because it investigates ventilation strategies in hospital isolation rooms using a tracer gas technique. In the present work, six points of measurements are utilized to evaluate the concentrations of contaminants and air velocity. The results show that the concentrations estimated by FDS are inferior to the experimental results given by Cheong and Phua . For example, in the SP1 point of measurement, the concentrations estimated by FDS and by Cheong and Phua are 20 and 28.9 ppm, respectively, while in the SP5 point, the concentrations estimated by FDS and by Cheong and Phua are 28.6 and 32.9 ppm, respectively. The error percentages between FDS estimates and experimental measurements made by Cheong and Phua range between 1 and 32%

On some aspects of random walks for modelling mobility in a communication network

Bibliography: leaf 16.Grant ONR/N00014-75-C-1183.S. K. Leung-Yan-Cheong, E. R. Barnes

한국에 중국 경제 의존도: 기술산업 중심 분석

학위논문(석사) -- 서울대학교대학원 : 국제대학원 국제학과(국제통상전공), 2021.8. Rhee, YeongSeop.1990 년대 이후 한국과 중국의 경제 관계가 깊어지면서 양국 간 경제 관계도 더욱 가까워졌다. 중국은 세계 제조 공장으로서 교역 상대국이 많고 다양한 상품을 거래하는 반면, 한국은 주요 교역 상대국이 한정되어 있다. 한국의 주요 교역국 중 하나인 중국은 2004년 이후 한국의 무역량에 가장 큰 기여를 했다. 그 기간 동안 평화적인 경제와 정치적 관계 때문에, 한국은 중국에 대한 경제적 의존도를 빠르게 증가시켰다. 그러나 양국간의 계속되는 분쟁은 중국과 한국의 경제 관계에 커다란 도전을 됐다. 본 논문은 중국에 대한 한국의 경제적 의존도를 조사한다. 이 신문은 수십 년 동안 양측의 복잡한 경제 관계를 고려하면서 한국과 중국의 역사적 무역 배경에 대한 상세한 검토를 실시했다. 이어 한국의 대중국 경제 의존도를 가늠하는 양적 척도로 국가영향지수 (CII)와 무역 의존도 (TD)가 활용됐다. 그 결과는 한국이 1990 년대 이후 중국에 대한 경제적 의존도를 크게 증가시켰다는 것을 보여주었다. 또 사드, 미중 무역전쟁 발발 이후 한국이 중국에 대한 경제적 의존도를 낮추려 해도 현실에서는 이런 결과를 거의 볼 수 없다. 적어도 CII와 TD에서 도출된 정량적 결과는 한국이 중국에 대한 경제적 의존도를 분명히 줄이지 않았다는 것을 보여주었다. 그 후 논문은 한국의 구체적인 조치가 왜 기대한 성과를 거두지 못했는지에 대한 질적 분석을 실시했다. 여기에 중국에 대한 경제적 의존도를 낮추려는 한국의 내부 노력과 한국이 대중국 무역을 축소할 수 있는 외압이 모두 다양한 측면에서 논의되었다. 결론적으로, 한국이 중국에 대한 경제적 의존도를 낮추지 못한 것은 두 가지 주요 요인으로 볼 수 있다: 1) 한국 기업들은 여전히 중국의 새로운 시장 기회에 관심을 가지고 있고 2) 중국은 기술 분야를 위해 한국과 무역 관계를 유지하기를 원한다.As South Korea and China has deepened their economic relationship since 1990s, the economic relationship between the two countries also became closer. China, as the world manufacture factory, has many trade partners and trades for a variety of goods, while South Korea has a limited number of major trade partners. China, among South Korea’s major trade partners, made the biggest contribution to South Korea’s trade volumes since 2004. Because of the peaceful economic and political relationship during that period of time, South Korea rapidly increased its economic dependence on China. However, the continuous disputes happened between the two countries posed great challenge to the economic relationship between China and South Korea. This paper conduct research on the level of South Korea’s economic dependence on China, focusing on the technology industry. Considered the complex economic relationship between the two sides throughout decades, the paper first conducted a review of the historical trade background between South Korea and China and analyzed their trade activities in the technology sector. Then, Country Impact Index (CII) and Trade Dependence (TD) were used as two quantitative measures to gauge the level of South Korea’s economic dependence on China. The results shown that South Korea has greatly increased its economic dependence on China since 1990s. Additionally, even though South Korea tried to decrease its economic dependence on China after the breakout of THAAD and US- China trade war, the current outcomes can be hardly seen in reality. At least the quantitative results generated from CII and TD indicated that South Korea did not made obvious decrease its economic dependence on China. Then this paper also did qualitative hypothesis test on why specific measures of South Korea failed to achieve expected results. Here, both South Korea’s internal efforts to decrease its economic dependence on China and external pressure which might lead South Korea to reduce its trade with China were both discussed from various aspects. In conclusion, South Korea failed to reduce its economic dependence on China can be attributed to two major factors: 1) South Korean companies are still interested in new market opportunities in China; and 2) China wants to keep the trade relationship with South Korea for the technology sector.I. Introduction 1 II. Literature Review 4 2.1 Economic Dependence 5 2.2 Technology Industry of South Korea and China 6 2.3 Why Decreasing Economic Dependence is Important to Korea 14 III. Methodology 21 3.1 Country Impact Index (CII) 22 3.2 Trade Dependence (TD) 25 VI. Empirical Results - 28 4.1 Descriptive Data 28 4.2 Country Impact Index (CII) 33 4.3 Trade Dependence (TD) 39 V. Hypothesis Test 42 5.1 Internal Efforts 43 5.2 External Pressure 54 VI. Case Studies 65 6.1 Hyundai & Kia's Investment in China 65 6.2 Wise Road Capital's Buyout of Magnachip 68 VII. Conclusion 72 VIII. Bibliography 75석

Oral cancer secretome: Identification of cancer-associated proteins

This study aims to identify cancer-associated proteins in the secretome of oral cancer cell lines. We have successfully established four primary cell cultures of normal cells with a limited lifespan without human telomerase reverse transcriptase (hTERT) immortalization. The secretome of these primary cell cultures were compared with that of oral cancer cell lines using 2DE. Thirty five protein spots were found to have changed in abundance. Unambiguous identification of these proteins was achieved by MALDI TOF/TOF. In silico analysis predicted that 24 of these proteins were secreted via classical or nonclassical mechanisms. The mRNA expression of six genes was found to correlate with the corresponding protein abundance. Ingenuity Pathway Analysis (IPA) core analysis revealed that the identified proteins were relevant in, and related to, cancer development with likely involvements in tumor growth, metastasis, hyperproliferation, tumorigenesis, neoplasia, hyperplasia, and cell transformation. In conclusion, we have demonstrated that a comparative study of the secretome of cancer versus normal cell lines can be used to identify cancer-associated proteins.Article Link: http://onlinelibrary.wiley.com/doi/10.1002/elps.201300126/abstrac