97 research outputs found

    Writing for Local Government Schools: Authors and Themes in Song-dynasty School Inscriptions

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    A hallmark of the Song dynasty\u27s achievements was the creation of a national network of state-sponsored local schools. This engendered an exponential growth of commemorative inscriptions dedicated to local government schools. Many authors used these inscriptions as an avenue to expound and disseminate their visions of schools and education. Using the methods of network analysis and document clustering, this article analyzes all the inscriptions extant from Song times for local government schools. It reveals a structural schism in the diffusion of ideas between the Upper Yangzi and other regions of the Song. It also demonstrates the growing intellectual influence of Neo-Confucian ideologues that gradually overtook that of renowned prose-writers. Methodologically, this article provides an example of how diverse digital methods enable us to handle a large body of texts from multiple perspectives and invite us to explore connections we might not have otherwise thought of. Free access link: https://www.cambridge.org/core/journals/journal-of-chinese-history/article/writing-for-local-government-schools-authors-and-themes-in-songdynasty-school-inscriptions/8917993FA5EC53FC837961E6B929856F/share/eb301b0b72c9781fb464765a830a50b029453e6

    SHMT2 expression as a diagnostic and prognostic marker for thyroid cancer

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    Background: Catabolism of serine via serine hydroxymethyltransferase2 (SHMT2) through the mitochondrial one-carbon unit pathway is important in tumorigenesis. Therefore, SHMT2 may play a role in thyroid cancer. Methods: Thyroid tissue samples and The Cancer Genome Atlas (TCGA) database were used to evaluate SHMT2 expression in thyroid tissues and the association with clinical outcomes. Results: SHMT2 protein expression was evaluated in thyroid tissues consisting of 52 benign nodules, 129 papillary thyroid carcinomas (PTC) and matched normal samples, and 20 anaplastic thyroid carcinomas (ATC). ATCs presented the highest (95.0%) positivity of SMHT2 protein expression. PTCs showed the second highest (73.6%) positivity of SHMT2 expression, which was significantly higher than that of be nign nodules (19.2%, P = 0.016) and normal thyroid tissues (0%, P < 0.001). Analysis of TCGA data showed that SHMT2 messenger RNA (mRNA) expression was significantly higher in tumo rs than in normal tissues (P < 0.001). When we classified thyroid cancer into high and low gr oups according to SHMT2 mRNA expression levels, the thyroid differentiation score for t he high SHMT2 group was significantly lower than that of the low SH MT2 group (P < 0.001). There was also a significant correlation between SHMT2 mRNA expression and the stemness index (r = 0.41, P < 0.001). The high SHMT2 group had more advanced TNM stages and shorter progression-free survival rates than the low SHMT2 group (P < 0.01 and P = 0.007, respectively). Conclusion: SHMT2 expression is higher in thyroid cancers than normal or benign tissues and is associated with de-differentiation and poor clinical outc omes. Thus, SHMT2 might be useful as a diagnostic and prognostic marker for thyroid cancer

    In vitro culturing of porcine tracheal mucosa as an ideal model for investigating the influence of drugs on human respiratory mucosa

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    It has been previously shown that fresh mucosa from different mammals could serve as raw material for in vitro culturing with the differentiation of cilia, which are the most important morphological structures for the function of the mucociliary system. Increasing legal restrictions on the removal of human tissue and changing surgical techniques have led to a lack of fresh human mucosa for culturing. Most of the animals that have been used as donors up to now are genetically not very close to human beings and must all be sacrificed for such studies. We, therefore, established a modified system of culturing mucosa cells from the trachea of pigs, which is available as a regular by-product after slaughtering. With respect to the possibility of developing “beating” cilia, it could be shown that the speed of cell proliferation until adhesion to the coated culture dishes, the formation of conjunctions of cell clusters and the proliferation of cilia were comparable for porcine and human mucosa. Moreover, it could be demonstrated that the porcine cilia beat frequency of 7.57 ± 1.39 Hz was comparable to the human mucosa cells beat frequency of 7.3 ± 1.4 Hz and that this beat frequency was absolutely constant over the investigation time of 360 min. In order to prove whether the reaction to different drugs is comparable between the porcine and human cilia, we initially tested benzalkonium chloride, which is known to be toxic for human cells, followed by naphazoline, which we found in previous studies on human mucosa to be non-toxic. The results clearly showed that the functional and morphological reactions of the porcine ciliated cells to these substances were similar to the reaction we found in the in vitro cultured human mucosa

    Quantitative Proteomics Identifies the Myb-Binding Protein p160 as a Novel Target of the von Hippel-Lindau Tumor Suppressor

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    Background: The von Hippel-Lindau (VHL) tumor suppressor gene encodes a component of a ubiquitin ligase complex, which is best understood as a negative regulator of hypoxia inducible factor (HIF). VHL ubiquitinates and degrades the a subunits of HIF, and this is proposed to suppress tumorigenesis and tumor angiogenesis. However, several lines of evidence suggest that there are unidentified substrates or targets for VHL that play important roles in tumor suppression. Methodology/Principal Findings: Employing quantitative proteomics, we developed an approach to systematically identify the substrates of ubiquitin ligases and using this method, we identified the Myb-binding protein p160 as a novel substrate of VHL. Conclusions/Significance: A major barrier to understanding the functions of ubiquitin ligases has been the difficulty in pinpointing their ubiquitination substrates. The quantitative proteomics approach we devised for the identification of VHL substrates will be widely applicable to other ubiquitin ligases

    Finishing the euchromatic sequence of the human genome

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    The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

    DEVELOPMENT OF TOOLS FOR DATA MONITORING OF REGIONAL ECONOMIC SECURITY

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    The information base of the work includes data of the Federal state statistics service, materials of the Ministry of economic development of the Russian Federation, the Ministry of economy of the Republic of Tatarstan, RIA Rating Agency LLC, Raex Rating Agency JSC (expert RA), as well as the conceptual framework for risk management of organizations developed by the Committee of sponsoring Organizations of the Treadway Commission (COSO), the methodology of the project management Manual (PMBOK Manual)

    Gromov-Hausdorff stability for group actions

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    [[alternative]]A Study of United Communications' Exclusive Professional Baseball Telecasting Rights from 1997 to 1999

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    [[abstract]]近年台灣有線電視的發展是大家有目共睹的。然而,在眾多大財團爭相分食有線電視商業大餅的同時,也發生了許多爭議,如:和信傳播集團於民國八十四年八月十八日以三年十五億五仟萬元左右的高價競標,獲得職棒八年至職棒十年(民國八十六年至八十八年)之球賽獨家電視轉播權。而此一事件的背後,和信傳播集團涉及了公平交易法中所謂「非法限定價格」,以及「非法獨占」的嫌疑。和信傳播集團所屬的飛梭公司並藉著「多頻道聯賣」的方式,意欲獲取極大商業利益,涉及不合理的限制交易行為,如「搭售」。本研究參照美國國家大學運動聯盟(NCAA)在一九八四年之電視轉播權違反反托拉斯法之案件判決,以文獻分析與比較法學之研究方法,結合傳播領域中關於有線電視現況之研究,以及法律學理中公平交易法之規範與精神,深入探討和信傳播集團獲得職棒轉播權事件對於台灣有線電視生態的影響,並對未來提出具體可行之建議。[[sponsorship]]中正大學電訊傳播研究所; 交通大學傳播科技研究所; 教育部[[conferencetype]]國內[[conferencedate]]19960706~19960707[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]嘉義縣, 臺

    Dynamic Power-Saving Method for Wi-Fi Direct Based IoT Networks Considering Variable-Bit-Rate Video Traffic

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    With the arrival of the era of Internet of Things (IoT), Wi-Fi Direct is becoming an emerging wireless technology that allows one to communicate through a direct connection between the mobile devices anytime, anywhere. In Wi-Fi Direct-based IoT networks, all devices are categorized by group of owner (GO) and client. Since portability is emphasized in Wi-Fi Direct devices, it is essential to control the energy consumption of a device very efficiently. In order to avoid unnecessary power consumed by GO, Wi-Fi Direct standard defines two power-saving methods: Opportunistic and Notice of Absence (NoA) power-saving methods. In this paper, we suggest an algorithm to enhance the energy efficiency of Wi-Fi Direct power-saving, considering the characteristics of multimedia video traffic. Proposed algorithm utilizes the statistical distribution for the size of video frames and adjusts the lengths of awake intervals in a beacon interval dynamically. In addition, considering the inter-dependency among video frames, the proposed algorithm ensures that a video frame having high priority is transmitted with higher probability than other frames having low priority. Simulation results show that the proposed method outperforms the traditional NoA method in terms of average delay and energy efficiency
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