Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：促进传媒教学团队素养提升对提升传媒学校教育质量，落实立德树人根本任务有着重要作用。本文对目前传媒教学团队素养整体状况进行了分析，提出了“智慧广电”背景下传媒教学团队素养提升路径及对策。
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Constructing a multi-source document metadata fusion model will help improve the overall quality of document metadata, promote metadata management and utilization in the resource discovery system, and optimize user resource discovery service experience. In view of the document metadata duplication judgment strategy proposed by the writers before, this paper optimizes the strategy from experience-oriented to automated, and improves the automation level in the whole process on the premise of guaranteeing the duplication judgment and fusion effect.[Method/process] The metadata items of different types of documents were different, and the metadata items of the same document from different sources were different, which will make the method of judging duplication different. An automatic multi-source document metadata fusion model based on the decision tree was proposed, which transformed a duplication judgment problem into a classification problem. This paper selected features according to feature similarity and constructed the decision tree, on this basis, it implemented metadata duplication judgment and fusion, and took different types of document resource metadata as examples to conduct experiments to verify the effectiveness of the strategy.[Result/conclusion] The results show that for the five document types of metadata, the accuracy of the duplication judgment strategy is more than 99%, and the recall rate is more than 98%. The overall effect is good. Judgment on the effect of the fusion strategy, the quality improvement ratios of the metadata items of patents, dissertations, journal papers, conference papers and books are 15.15%, 36.80%, 15.29%, 52.63% and 15.38% respectively, all of which have significant improvement.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： As green and low-carbon transition has gained world-wide recognition and become the inherent requirement of fully building a modern socialist China, the consumption of critical metals will increase drastically in the next decades. Meanwhile, this will mean a continually increasing potential of critical metals recycling. Facing changes and pandemic unseen in a century and increasing geopolitical conflicts, it has become a strategic consensus on the national security level for Western countries like the United States and Europe Union to acknowledge and enhance the role of recycling in secure provision of critical metals. Here, in this article, we have discussed the future potentials and major challenges of critical metals recycling and reviewed the strategies proposed by the main industrialized countries. Based on this, we aim to help formulate China’s national strategies and countermeasures regarding critical metals recycling and thus contribute to supporting the achievement of China’s “dual carbon” ambition and its green and low-carbon transition in the next decades.
Subjects: Nursing >> Nursing submitted time 2022-12-05
Abstract： Objective To observe the effect of using the therapeutic apparatus for music therapy based on Traditional Chinese Medicine (TCM)syndrome differentiation in the treatment of functional abdominal distension. Methods Totally 60 patients with functional abdominal distension were randomly divided into the control group and the intervention group, with 30 cases in each group. All patients received a routine treatment and nursing (7 days per course, two courses), and the music therapy based on TCM syndrome differentiation by using a therapeutic apparatus was performed in the intervention group. The Gastrointestinal Symptom Assessment score and overall effective rate were compared between two groups. Results The Gastrointestinal Symptom Assessment score decreased in both two group after two courses of treatment, and the Gastrointestinal Symptom Assessment score in the intervention group was lower than that in the control group（P＜0.01）. The overall effective rate was 93.33%(28/30) in the intervention group, which was significant higher than 73.33%(22/30) in the control group(P＜0.01). No serious adverse reaction was reported in either group. Conclusion The therapeutic apparatus for music therapy based on TCM syndrome differentiation is safe and effective in the treatment of functional abdominal distension.
Peer Review Status:
Awaiting Review
Subjects: Biology >> Botany >> Applied botany submitted time 2020-08-02 Cooperative journals: 《广西植物》
Abstract：为精确地识别藜属植物染色体组的核型特征，该文研究了4种来自青海高原的野生藜属植物（灰绿藜、藜、菊叶香藜及杂配藜）和一种从美国引进的栽培藜麦品种PI614932-HX（3）基于染色体荧光原位杂交（rDNA-FISH）的核型。利用5S和45S rDNA对5种藜属植物有丝分裂中期的染色体进行FISH研究。藜属植物的核型分析结果表明：藜属植物中存在二倍体（2n=2X=18）和四倍体（2n= 4X = 36）两种倍性，藜麦和灰绿藜为四倍体，其余3种为二倍体。藜麦、灰绿藜、藜、菊叶香藜及杂配藜的核型公式分别为2n=4X=36=34m (2AST) +2sm，2n=4X=36=32m (4AST) + 4sm，2n=2X=18=16m (4AST) + 2sm，2n=2X=18=18m及2n=2X=18=16m+2sm。染色体由大部分的中部着丝粒染色体（m）和少部分近中部着丝粒染色体（sm）组成。核型类型除了菊叶香藜为1B外其余均属于2B类型。在藜麦、灰绿藜及藜中具有分布位置不同、数量不等的双随体。5S、45S rDNA-FISH结果表明：藜麦和灰绿藜的染色体上存在2对5S rDNA位点和1对45S rDNA位点；藜、杂配藜的染色体上存在1对5S rDNA位点和45S rDNA位点，菊叶香藜的染色体上只存在1对5S位点。5S和45S rDNA位点均位于染色体的短臂上。该研究获得了藜属植物基于5S和45S rDNA荧光原位杂交核型，为藜属植物亲缘关系研究和细胞生物学研究提供了分子细胞遗传学依据。
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-10 Cooperative journals: 《干旱区研究》
Abstract：在毛乌素沙地选择半固定沙丘地、留茬地、翻耕地及草地4种土地利用类型，采集土壤表层（0~5 cm）和亚表层（5~10 cm）实验样品，测试并分析粒度和有机质的含量变化及其二者之间的相关性。结果表明：① 留茬地、翻耕地和草地的优势粒级为粉粒（0.002~0.05 mm）。表层土壤粉粒含量草地（61.06%)>留茬地（53.09%）>翻耕地（48.28%）；亚表层为草地（61.25%)>翻耕地（49.43%）>留茬地（48.42%）。半固定沙丘地的优势粒级为细砂（0.1~0.25 mm）。其表层含量52.69%，亚表层含量54.53%。② 土壤有机质含量，表层草地（18.75 g·kg-1）>翻耕地（12.53 g·kg-1）>留茬地（11.25 g·kg-1）>半固定沙丘地（8.13 g·kg-1）；亚表层草地（13.36 g·kg-1）>留茬地（13.05 g·kg-1）>翻耕地（12.67 g·kg-1）>半固定沙丘地（7.73 g·kg-1）。③ 土壤粒度与有机质的相关性表现为留茬地、半固定沙丘地的有机质与粉粒呈显著正相关，翻耕地有机质与中砂、细砂呈正相关，反映了翻耕地土壤有机质不稳定且易受其他因素影响。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-11-29 Cooperative journals: 《计算机应用研究》
Abstract： Multiple-input multiple-output (MIMO) technology has been applied to power line communication (PLC) to meet the demand of PLC for larger capacity and wider coverage, and it can achieve high-speed data transmission. However, the channel of MIMO-PLC system has the characteristics of serious multipath effect and frequency selective fading, and the channel quality of different subcarriers is quite different. Therefore, the existing signal detection algorithms cannot achieve good performance. A scheme of detection algorithm based on condition number threshold selection is proposed, and the condition number of the channel matrix is used to measure the quality of the channel and the threshold of the optimal condition number is set. The CLLL-MMSE-SQRD detection algorithm is selected when the condition number of channel is less than or equal to the threshold, and the QRD-M detection algorithm is selected when the condition number of channel is greater than the threshold. The simulation results prove that the proposed algorithm scheme can reach the performance of optimal detection algorithm. In the 16QAM modulation mode, the complexity of the proposed algorithm is reduced by 44% compared with the QRD-M detection algorithm, and with the increase of modulation order, the complexity is reduced more obviously.
Subjects: Medicine, Pharmacy >> Preclinical Medicine submitted time 2018-06-15 Cooperative journals: 《南方医科大学学报》
Abstract： Objective To summarize our experience with tubular gastric elongation surgery for management of insufficient gastric length for high esophageal-gastric anastomosis following esophageal carcinoma resection. Methods From September, 2015 to October 2016, 5 patients with esophageal cancer were treated in our department, including two with cervical esophageal cancer and 3 with thoracic esophageal cancer. The patients with cervical esophageal cancer underwent pharyngeal resection, total laryngectomy, esophageal varus extubation and gastric oropharyngeal anastomosis, and the patients with thoracic esophageal cancer underwent esophageal cancer resection with incisions on the left neck, the right chest and the median abdomen. During the surgery, the length of the stomach was found insufficient to allow routine oropharyngeal anastomosis, and tubular gastric elongation was conducted to extend the tubular stomach to enable successful completion of the surgery. Results All the patients recovered smoothly after the surgery and were discharged after 2-3 weeks. Conclusion Tubular gastric elongation surgery can be a good choice for high esophageal-gastric anastomosis after resection of esophageal cancer in cases of insufficient tubular stomach length or high tension at the anastomosis.
Subjects: Biology >> Ecology submitted time 2018-05-18 Cooperative journals: 《生态学报》
Abstract：土壤微生物是土壤的重要组成部分，它对土壤肥力的形成和植物营养的转化起着积极的作用。采用16S V4区高通量测序等方法对贵州省不同生态区域典型植烟土壤根际微生物群落进行分析研究，从根际土壤微生物群落特征上诠释不同生态区域典型土壤根际微生物群落的信息差异。结果表明：贵州省不同生态区域弱酸和酸性土壤占70.06%，有机碳平均2.24%，有机碳含量总体偏高，全氮与有机碳含量具有一定相关性；根际土壤微生物的OTUs数量差异明显，呈现总体是西部高于东部，南部高于北部；微生物属水平物种丰度差异显示，土壤类型对微生物群落丰度影响显著，而在土壤功能微生物上黔北区域的变形菌门（Proteobacteria）和放线菌门（Actinobacteria）两个门的微生物相对丰度最高，而在黔中中部区域变形菌门的丰度显著高于放线菌门的丰度。黔西南和黔中中部区域土壤微生物属水平优势种群显著高于其他地区，种群平衡度不高，具有土传病害发生的潜在危险。通过贵州省不同生态区域土壤微生物根际微生物信息分析与研究，为后续土壤生物修复奠定了良好的研究基础。
Subjects: Biology >> Ecology submitted time 2017-11-29 Cooperative journals: 《中国生态农业学报》
Abstract： The diversity of bees has declined in recent years around the world. This has raised concerns about pollination service, which is closely linked with sustainable agricultural production. To understand the supply and demand of regional pollination service and laid the basis for developing a regional pollination management strategy, we investigated seven common habitat types, which were forest, woodland, grassland, orchard, greenhouse, road boundary, field margin, and one non-habitat land in Changping District of Beijing in 2016. The data including bee (species, flying distance, nesting preference and active season), vegetation (vegetation composition, flowering season, nectar/pollen resources), nesting suitability (soil compaction) and crop area were collected. The supply of pollination service in the study area was evaluated by using the InVEST model, which was based on species composition, flight distance, nesting preference and activity season of wild bees. The model also used data of plant resources and nesting suitability in the habitat to estimate the dependent degree of crops on pollination. The demand for pollination service was evaluated based on planting area and dependence on pollination service of crops. Furthermore, the match between pollination service supply and demand was studies by stacking the levels of supply and demand. The results showed that natural forests were the most suitable habitat for wild bee production, followed by woodlands, grasslands and border habitats. Orchards too were wild bee habitats and also had high demand for pollination service. Greenhouse barely provided pollination service, but had a high demand for it. The supply and demand match results showed that in Changping area, pollination service supply exceeded demand. The areas where supply level was higher than demand level accounted for 34.17%, mostly distributed in mountain areas. The areas with the highest supply and lower demand for pollination service was worthy for protection. The areas with lower supply than demand accounted for 27.76% and were distributed in plain regions near mountains. Although such areas had a relatively high supply, demand was the highest. Areas with the same supply-demand accounted for 47.27%, distributed in plain areas far from mountains. In these areas, the supply and demand for pollination service were basically in balanced match because of the high proportion of semi-natural habitats. Finally, some management strategies were suggested to improve pollination service in the study area. For the areas with higher supply and medium/lower demand (key protected region), it was suggested to develop organic agricultural with less management to protect habitat. For medium/lower supply and higher demand areas (key improved and generally improved regions), it was necessary to improve pollination service by breeding bee and increase natural/semi-natural habitat, and strengthen connectivity among habitats through ecological corridor construction. For the area with balanced supply and demand, (key maintained, and generally maintained regions), decreasing management intensity of agricultural area and increasing connectivity among habitats were important for keeping sustainable pollination service supply.
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