Subjects: Library Science，Information Science >> Library Science submitted time 2024-04-17
Abstract： Purpose/Significance Through bibliometric analysis, this study aims to sort out the context of urban economics research, analyze the differences between domestic and international urban economics research, identify the urgent problems and weak links in Chinese urban economics research, and propose prospects and reflections for future research and application of Chinese urban economics. Method/Process Extract the search records of urban economics research from the CNKI database of China National Knowledge Infrastructure and the Web of Science core collection from 1949 to 2023,and use Citespace software to visually analyze the author, keywords, and other content. Results/Conclusion Analysis shows that although there are differences in the research hotspots and frontiers of urban economics both domestically and internationally, the overall number of literature on urban economics research has increased, and the intersection and integration of multidisciplinary theories to solve urban problems has become the main trend in urban economics research. The refinement of research fields, continuous innovation of research methods, and wider application of research results have made it possible for this discipline to provide more theoretical support and practical guidance for urban sustainable development.
Peer Review Status:
Awaiting Review
Subjects: Electronics and Communication Technology >> Information Processing submitted time 2023-11-07 Cooperative journals: 《文献与数据学报》
Abstract： ［Purpose/significance］Data fusion is an important way to realize multi-source data value.Comprehensive analysis of the overall topics of global data fusion research has an important scientific and technological information value for the current data fusion research. ［Method/process］The hot topics and research methods of 16053 literatures from Web of Science core collections were analyzed by word-frequency and co-word analysis. ［Result/conclusion］The data fusion research has shown a significant growth trend, and after more than 30 years development, core research hotspots and methods of data fusion have been formed. In the research, the data fusion of sensors （including wireless sensors） is the core research direction in this field. Fault diagnosis, remote sensing, security and smart grid are the hotspots of the data fusion scenario. Kalman Filter, Neural Network, Dempster-Shafer Evidence Theory and Machine Learning（including Deep Learning, Support Vector Machine, etc.） are the main methods in data fusion, and the synergy network of methods have been formed in data fusion.
Subjects: Nursing >> Nursing submitted time 2023-10-14
Abstract： This article summarizes the nursing experience of a case of patients with residual dizziness after otoliths reduction treated by auricular point pressure pill combined with auricular moxibustion moxibustion.On the basis of routine treatment and nursing, nursing evaluation was carried out for the patient, and individualized TCM technical operation - ear moxibustion moxibustion method combined with auricular point pressure pill therapy was implemented for the patient, and intervention was carried out on the residual symptoms of dizziness, sleep quality and anxiety state of the patient.
Peer Review Status:Awaiting Review
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：随着社会经济的不断发展和改革的不断深入,人们日益追求精神世界的充实,社会的主要矛盾已经转化为人民日益增长的美好生活需要和不平衡不充分的发展之间的矛盾,这就对精神文明建设提出了更高的要求。县级电视台作为最基层的媒体,在新时代的发展面临着机遇和挑战,为了更好地迎接机遇与挑战,县级电视台应该打破传统的习惯性思维,加强与观众们之间的联系,推进媒体融合工作,将县级电视台打造成县级融媒体中心,这样才能更好地服务广大人民群众。
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：电视新闻一度是人们了解外界的主要途径,然而在新媒介生态环境的影响下,现代传媒技术出现了很多新的发展趋势,而电视节目的短暂性、延时滞后的反馈手段,都让电视新闻节目面临严峻的挑战。在新媒介生态下,电视新闻节目传播模式会有什么变化呢,这是本文讨论的核心,也是现代媒体人关注的热点问题。
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： Fe- Cr-Mn alloys are becoming a promising candidate material for interconnectors of solid oxide fuel cells (SOFC) stacks because of the formation of an conductive scale containing (Mn,Cr)3O4 spinel at intermediate temperature range of 650~800 ℃. To better understand their scaling mechanism and evaluate their high temperature performance for SOFC interconnects, the oxidation of Fe-13Cr-xMn alloys with different Mn content (x=0.5, 1, 2) was investigated both in dry and wet air at 800 ℃. The experimental results indicated that all alloys exhibited excellent oxidation-resistance in dry atmosphere. The Fe-Cr-Mn alloys with Mn less than 1% could easily form the conductive (Mn, Cr)3O4 spinel, which can effectively hinder the volatilization of chromium from the surface of the alloys. However, the oxide Mn2O3 presented in the scale after the manganese content of the alloy increased up to 2%. These had an impact on the high temperature performance of the alloy. In the wet atmosphere, the instability oxidation of all alloys occurred and a large amount of oxide products formed on the surface of the alloys, in contrast to that in dry atmosphere. The oxidation rates decreased with increasing manganese content, which is mainly attributed to the formation of (Mn, Cr)3O4 spinel with higher Mn content. No accelerated oxidation occurred on Fe-13Cr-2Mn alloy within the first 12 h oxidation. The accelerated oxidation of Fe-Cr-Mn alloy was mainly caused by the reaction between the water vapor and chromia scale. The mechanism of accelerated oxidation and the effect of Mn were reported and elucidated by experimental methods including SEM/EDS and XRD.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-31 Cooperative journals: 《农业图书情报学报》
Abstract： [Purpose/Significance]VOSviewer is a software tool for constructing and visualizing bibliometric networks which may include citation, bibliographic coupling, co-citation, or co-authorship relations. VOSviewer Online creates the possibility to embed interactive visualizations on online platforms. The software's powerful functions in processing literature information, coupled with free and continuous improvement, are increasingly favored by experts and scholars in scientometrics and domain analysis. It provides a reference for users to use this tool for scientific research through quantitative analysis of VOSviewer's papers and the analysis of its knowledge base structure. [Method/Process] First we collected relevant documents from the Web of Science database, and then used the document co-citation network to obtain some documents and analyze the important documents in this field based on bibliometric analysis. [Results/Conclusions] It was found that the number of papers in this field has entered an explosive period of application after a relatively slow growth stage. It has been widely used by scholars in many countries and disciplines. The research topics involved the novel corona virus epidemic, sustainability, social media, sustainable development and supply chain, etc. Bibliometric theory and methods, software principles, database and network analysis have formed relatively solid research foundation in this field. There is also a great deal of misuse in the applied literature. For example, a survey of the highly productive scholars' papers found that the papers are often a direct interpretation of the results generated by the software, lacking the process of data cleaning and disambiguation, and there are a large number of errors such as duplicate authors, unprocessed singular and plural topics. VOSviewer also offers text mining functionality that can be used to construct and visualize co-occurrence networks of important terms extracted from a body of scientific literature. However, there are few applied research results in this area.VOSviewer Online has been integrated in Digital Science's Dimensions platform, making it very easy for Dimensions users to create VOSviewer visualizations of co-authorship networks and citation networks.
Subjects: Nursing >> Nursing submitted time 2023-03-06
Abstract： This paper summarized the nursing management for a patient undergoing bilateral knee replacement surgery. The psychological care and postoperative preparation were carried out after nursing evaluation. Individualized rehabilitation plan including prevention of postoperative complications, rehabilitation exercise and regular follow-up was implemented to improve the recovery of the patient.
Peer Review Status:Awaiting Review
Subjects: Nursing >> Nursing submitted time 2022-12-05
Abstract：
This paper summarized the nursing management for a hemodialysis patient after parathyroidectomy for secondary hyperparathyroidism. The nursing measures included timely correction of hypocalcemia, dietary nursing, psychology nursing and health education about medication. Comprehensive nursing intervention is potentially effective to improve the comfort level, treatment compliance and quality of life in the hemodialysis patient after parathyroidectomy
Peer Review Status:Awaiting Review
Subjects: Physics >> Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics submitted time 2022-08-30
Abstract： Periodic optical systems, such as photonic crystals and optical metamaterials, can localize high-density electromagnetic field energy at subwavelength scales and obtain extremely small mode volumes, so they have great application potential in the field of light manipulation. In recent years, a strong interaction between light and matter in periodic optical systems has been discovered, which is called bound states in continuum (BIC). Optics BICs are special electromagnetic eigenstates those frequencies lie in the radiation continuum but are completely localized, and have shown interesting physics and rich application scenarios. This paper systematically reviews the classification and theory of BICs in periodic optical systems, and summarizes their basic physical properties and the latest application development. BICs in periodic optical systems are injecting new impetus into the fields of integrated optics, information optics, bio-optics, topological optics, and nonlinear optics.
Peer Review Status:Awaiting Review
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-05-10 Cooperative journals: 《计算机应用研究》
Abstract： Linkable ring signatures could avoid double-spending attacks in the blockchain. Lattice-based signatures were quantum-resistant. However, as the number of ring members increased, the size of existing lattice-based linkable ring signatures increased. To solve this problem, a lattice-based linkable ring signatures scheme was proposed. This scheme used queues to implement a special conversion of vector number system, and used lattice-based accumulators to accumulate the public keys of ring members, so that the signature size didn’t increase with the number of ring members. And using the rejection sampling theorem, this scheme constructed signatures based on proofs of knowledge on lattices, prevented the signature private key from leaking, and improved the computational efficiency. In the random oracle model, the scheme was proved to be unforgeable, anonymous and linkable. Performance analysis and experimental evaluation show that, this scheme saves time and storage, and the signature size is constant with the increase of ring members.
Subjects: Psychology >> Cognitive Psychology Subjects: Psychology >> Developmental Psychology submitted time 2021-03-05
Abstract： Chinese children with developmental dyslexia (DD) have been found to show a deficit in processing multi-elements in a variety of visual tasks parallelly. Nevertheless, the potential mechanisms of this visual simultaneous processing deficit and its relation to the reading ability still remain unclear. The ability of simultaneously processes multi-character strings is restricted by different cognitive components, including perceptual processing speed, visual short-term memory capacity, selective spatial attention distribution pattern, and the ability to inhibit distractors. Therefore, this article attempted to explore the potential mechanisms underlying the visual simultaneous processing in Chinese children with DD in the framework of the theory of visual attention (TVA). Two experiments are conducted to investigate the fundamental cognitive components regarding the visual simultaneous processing skill, with further examining the relationship between these components and the Chinese reading ability from developmental perspective. 43 Chinese children with DD and 46 chronological-age matched children with normal reading ability are recruited, and the two groups respectively include students from high and low grades in primary schools for the purpose of probing into the developmental changes in these TVA-based components of the visual simultaneous processing. The two experiments separately utilize high-frequency Chinese characters as verbal materials and the symbols as nonverbal materials. A modified combined theory of visual attention (CombiTVA) paradigm is employed to collect participants’ performances during the multi-element processing. Based on the response accuracy in each level of CombiTVA task, the four parameters including processing speed (C), visual short-term memory storage (K), attentional weight (ω), and irrelevant inhibition (α) are estimated through TVA model. We first compare the four TVA parameters between groups and grades, and then conduct hierarchical regression analyses to examine the contributions of possible impaired TVA parameters of reading difficulty. The results of the two experiments illustrate that the DDs from high and low grades both exhibit reduced perceptual processing speed comparing to the controls during processing multiple elements in parallel, with a trend of developmental decrease in this component deficit. Moreover, significant differences in the selective spatial attention distribution pattern between dyslexic and normal readers are only present in Experiment 1 with Chinese characters as the stimuli rather than in Experiment 2 with the nonverbal symbols as the stimuli. In details, during multi-processing of Chinese characters, a balanced pattern in attentional distribution is observed in DDs from both two grade groups; while the attentional weight of normal readers develops from right-lateralized to balanced patterns. Further hierarchical regression analyses reveals that the impaired components of visual simultaneous processing are separately associated with different levels of Chinese reading, the component of perceptual processing speed independently and effectively accounts for the variance of the sentence reading performance regardless of material properties, while the component of selective spatial attention distribution pattern is related to the single-character reading speed. These findings unfold the modulation of language specificity of Chinese to the cognitive deficits of DDs to some extent. This research is helpful to deepen our understanding of the internal mechanism of the visual simultaneous processing deficit in Chinese dyslexic children, and contribute to designing relevant intervention targeting visual simultaneous processing skills to improve reading efficiency in the dyslexics.
Subjects: Psychology >> Cognitive Psychology submitted time 2019-05-27
Abstract： Multiple Object Tracking (MOT) is mainly used to explore visual attention and memory for multiple objects in dynamic contexts. Earlier studies focused on the influencing factors and processing mechanisms of the tracking process. An increasing number of recent studies have used MOT to evaluate and train different populations, including children, the elderly, patients with neurodevelopmental conditions, drivers, athletes, video game players, and other occupational groups. In general, a trend has emerged whereby the better the performance of MOT, the better the professional performance in complex and fast dynamic contexts. Conversely, poorer performance of MOT indicates that cognitive functioning may be immature or declining. In addition, MOT can also be used as a means of cognitive training to improve the cognitive function of the elderly and patients with neurodevelopmental conditions and improve the professional performance of various occupational groups. MOT should be considered for future use as it has enormous potential as a method of evaluation and training. This can be further improved in various ways, including strengthening the simulated training of special occupational groups, expanding the target populations, combining MOT with stereoscopic vision and real scenes, taking physical activities during MOT, exploring MOT with multi-person cooperation, and using MOT for the evaluation and training of emotional and social functions.
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：本试验通过研究谷氨酸渣对奶山羊产奶量及乳成分的影响，探究谷氨酸渣在奶山羊精料补充料中的最适添加量，旨在丰富奶山羊饲料原料来源，降低饲料成本。本试验采取单因素随机区组设计，选择处于泌乳前期[泌乳天数：（20±5） d]、胎次相同、体重(59.80±2.15) kg、产奶性能相近的2胎健康萨能奶山羊40只，随机分为4组，每组10只。4组山羊所喂精料补充料营养水平基本相同，其中谷氨酸渣的添加量分别为0（对照组）、2%、4%和6%。试验期共63 d，其中预试期7 d，正试期56 d。结果显示：日均干物质采食量、产奶量、乳糖率、乳脂率各组之间差异不显著（P>0.05）。试验第35天时，2%谷氨酸渣组和4%谷氨酸渣组乳蛋白率显著高于对照组和6%谷氨酸渣组(P0.05）。乳脂、乳糖、乳蛋白的日绝对产量各组之间差异不显著（P>0.05）。由此得出，谷氨酸渣可以作为奶山羊的饲料蛋白质原料，其在奶山羊精料补充料中的最适添加量为4%。
Subjects: Psychology >> Other Disciplines of Psychology submitted time 2018-10-26 Cooperative journals: 《心理学报》
Abstract：颜色范畴知觉究竟是语言的还是知觉的, 或两者交互引起的认知冲突所致仍在探究与争议之中。本研究采用色觉疲劳和语义饱和操作分别独立地改变知觉或语义加工, 观察二者对颜色范畴知觉效应的即时影响, 以期探究语言和知觉对颜色范畴的作用。结果显示, 色觉疲劳操作导致范畴间颜色辨别反应时减少, 颜色范畴效应增强。语义饱和操作导致被饱和颜色词所属的范畴内颜色辨别反应时增加, 颜色范畴效应增强。说明单独改变知觉或语义加工能力均能影响CCP效应, 支持了语言标签对比模型, 即语言与知觉的交互作用引起颜色范畴知觉的观点。
Subjects: Psychology >> Other Disciplines of Psychology submitted time 2018-09-13 Cooperative journals: 《心理学报》
Abstract：为研究语言对知觉的影响作用, 行为实验采用视觉搜索范式研究蒙汉双语者的颜色范畴知觉效应; 为进一步考察语言影响知觉的脑机制, 脑电实验采用Oddball范式研究蒙汉双语者的颜色范畴知觉效应。行为实验和脑电研究结果都发现, 在区分蒙古语中qinker和huhe色时, 低汉语水平的蒙汉双语者比高汉语水平者产生更强的颜色范畴效应, 蒙汉双语者的汉语水平影响颜色范畴知觉, 双语者所习得的第二语言范畴可以改变双语者母语的范畴, 语言能影响知觉的前注意阶段, 本研究支持了Spair-Whorf假设。
Subjects: Medicine, Pharmacy >> Preclinical Medicine submitted time 2017-12-27 Cooperative journals: 《南方医科大学学报》
Abstract： Objective To evaluate the mid-term clinical outcome of endoscopic greater saphenous vein harvesting (EVH) in coronary artery bypass grafting (CABG). Method A total of 205 patients receiving off-pump CABG between July, 2012 and April, 2013 at our department were enrolled in this study, including 66 patients (35 male and 31 female patients with a mean age of 60.3�.92 years) undergoing EVH and 139 patients (109 male and 30 female patients with a mean age of 59.20�.37 years) undergoing open greater saphenous vein harvesting (OVH). Results The surgical procedures were completed smoothly in all the cases. The perioperative mortality rates was 3.03% (2/66) in EVH group, as compared with 3.60% (5/139) in OVH group (P=1.00). Acute myocardial infarction (AMI) occurred during the perioperative period in 3 (2.16% ) patients in OVH group and in 1 (1.52%) patient in EVH group. Perioperative low cardiac output syndrome was diagnosed in 4 (2.88%) patients in OVH group and in 2 (3.03%) in EVH group (P>0.05). During the follow-up, 8 (8.80%) patients in OVH group and 5 (8.06%) in EVH group had recurrent angina (P=0.93). No patients experienced AMI during the follow-up. The 2-year patency rate of the venous grafts was 83.59% in OVH group and 82.22% in EVH group (P=0.73). Conclusion EVH has significant advantage in reducing the complications of the incision in the lower limbs. The mid-term patency rates of venous grafts are similar between OVH and EVH, but the long-term patency rate needs further evaluation.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-07-17 Cooperative journals: 《中国科学院院刊》
Abstract：文章从历史建筑保护中的安全与防灾问题切入，论述了结构工程安全与防灾中的基本科学问题，强调了灾害危险性分析、材料与结构破坏的科学基础、结构随机灾害反应分析、结构整体抗灾可靠性评估等基本问题的研究之于历史建筑保护研究的必要性与重要性，梳理了历史建筑结构安全与防灾研究应予关注的结构工程前沿技术，提出了若干发展建议。
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