期刊文献+
共找到2,232篇文章
< 1 2 112 >
每页显示 20 50 100
The “Dead Universe” Theory: Natural Separation of Galaxies Driven by the Remnants of a Supermassive Dead Universe
1
作者 Joel Almeida 《Natural Science》 2024年第6期65-101,共37页
This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This per... This article explores the dead universe theory as a novel interpretation for the origin and evolution of the universe, suggesting that our cosmos may have originated from the remnants of a preceding universe. This perspective challenges the conventional Big Bang theory, particularly concerning dark matter, the expansion of the universe, and the interpretation of phenomena such as gravitational waves. 展开更多
关键词 Dead universe Theory Heat Death of the universe Big Bang Theory universe’s Ultimate Fate universe Expansion Big Freeze universe Cosmological Models End of universe Theories Natural Galaxy Drift Future of the universe universe Cooling Down Cosmology and Entropy
下载PDF
Solving the Olbers’s Paradox, Explaining the “Red-Shift”, and Challenging the Relativities by “Sun Matters Theory” and “Sun Model of Universe”, an Evolution of the Einstein’s Static Universe Model
2
作者 Wanpeng Sun 《Natural Science》 2024年第2期7-18,共12页
Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used ... Olbers’s paradox, known as the dark night paradox, is an argument in astrophysics that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe. Big-Bang theory was used to partially explain this paradox, while introducing new problems. Hereby, we propose a better theory, named Sun Matters Theory, to explain this paradox. Moreover, this unique theory supports and extended the Einstein’s static universe model proposed by Albert Einstein in 1917. Further, we proposed our new universe model, “Sun Model of Universe”. Based on the new model and novel theory, we generated innovative field equation by upgrading Einstein’s Field Equation through adding back the cosmological constant, introducing a new variable and modifying the gravitationally-related concepts. According to the Sun Model of Universe, the dark matter and dark energy comprise the so-called “Sun Matters”. The observed phenomenon like the red shift is explained as due to the interaction of ordinary light with Sun Matters leading to its energy and frequency decrease. In Sun Model, our big universe consists of many universes with ordinary matter at the core mixed and surrounded with the Sun Matters. In those universes, the laws of physics may be completely or partially different from that of our ordinary universe with parallel civilizations. The darkness of night can be easily explained as resulting from the interaction of light with the Sun Matters leading to the sharp decrease in the light intensity. Sun Matters also scatter the light from a star, which makes it shining as observed by Hubble. Further, there is a kind of Sun Matters named “Sun Waters”, surrounding every starts. When lights pass by the sun, the Sun Waters deflect the lights to bend the light path. According to the Sun Model, it is the light bent not the space bent that was proposed in the theory of relativities. 展开更多
关键词 Olberss Paradox sun Matters Theory sun Model of universe Einstein’s universe Dark Mass
下载PDF
Data from Twenty-Three FRB’s Confirm the Universe Is Static and Not Expanding
3
作者 Lyndon Errol Ashmore 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第3期1152-1177,共26页
Fast Radio Bursts from far away galaxies have travelled through the IGM and provide a tool to study its composition. Presently there are 23 FRB’s whose host galaxies have been identified and the redshift found. This ... Fast Radio Bursts from far away galaxies have travelled through the IGM and provide a tool to study its composition. Presently there are 23 FRB’s whose host galaxies have been identified and the redshift found. This gives us the opportunity to test Dispersion Measure versus redshift predictions made by two models. The Macquart relation for an expanding Universe and the New Tired Light relationship in a static universe. In New Tired Light, redshifts are produced when a photon is absorbed and re-emitted by the electrons in the IGM which recoil on both occasions. Some of the energy of the photon has been transferred to the kinetic energy of the recoiling electron. The photon has less energy, a lower frequency and a longer wavelength. It has been redshifted. Since dispersion is due to an interaction between radio signals and these same electrons one would expect a direct relationship between DM and redshift in the New Tired light model. The relation is DM=(mec/2hre)ln(1+z)and contains no adjustable parameters—just a combination of universal constants related to the electron and photon. Notice that the relation is independent of the electron number density ne since a change in ne affects both the DM and redshift equally. A graph of DM versus ln(1 + z) will be a straight line of gradient (mec/2hre)and, using SI units, substituting for the constants gives 7.318 × 1025 m−2. Using the data from the 23 well localized FRB’s, with the weighting of the DM’s for expansion removed (so that the data corresponds to a static universe), a graph of DM versus ln(1 + z) has a gradient of 6.7 × 1025 m−2—9% below the predicted (mec/2hre). The Macquart relation involves highly processed data and adjustable parameters to allow for “dark energy” and “dark matter” (neither of which has yet been found) and can be reduced to DM = 850z (in units of pc∙cm−3). Using the data from this set of localized FRB’s gives a trendline with gradient 1.10 × 103 pc∙cm−3—almost 30% higher than that predicted in an expanding universe model. The FRB data clearly comes down in favour of a static universe rather than an expanding one. Combining the DM-z relationship for the 23 well localized FRB’s, with the Hubble diagram, drawn using the NED-D compilation of redshift independent extragalactic distances, produces a value of “ne” the mean electron number density of the IGM, of ne=0.48 m−3close to the value ne=0.5 m−3, long since predicted by NTL. 展开更多
关键词 REDsHIFT Dispersion Measure Fast Radio Bursts FRB’s Tired Light static universe IGM
下载PDF
从协同到求异:指向教师专业发展的U-S合作优化研究 被引量:1
4
作者 汪明帅 杨扬 《教师发展研究》 2024年第2期83-90,共8页
U-S合作是教师专业发展的重要举措。审视U-S合作的历程可知,U-S合作致力于多方位促进教师专业发展,协同逐渐成为U-S合作促进教师专业发展的底层逻辑。随着合作的持续推进,这一底层逻辑在促进教师专业发展方面所潜在的矛盾也逐渐暴露出... U-S合作是教师专业发展的重要举措。审视U-S合作的历程可知,U-S合作致力于多方位促进教师专业发展,协同逐渐成为U-S合作促进教师专业发展的底层逻辑。随着合作的持续推进,这一底层逻辑在促进教师专业发展方面所潜在的矛盾也逐渐暴露出来。一方面,大学与中小学的文化差异阻碍了协同的深度发生;另一方面,为了实现大学与中小学的协同,双方不得不做出诸多的妥协,在妥协的语境下,中小学教师往往面临着主体性丧失的风险。与之相对,在求异这一核心理念的引领下,跨界学习旗帜鲜明地提出了“差异即资源”的主张,并通过互动场域的营造和互动系统的建构,为“差异即资源”提供了现实可能,也为优化U-S合作提供了新的思路。 展开更多
关键词 U-s合作 教师专业发展 协同 求异
下载PDF
车辆主动悬架自适应变论域T-S模糊控制研究
5
作者 李韶华 季广港 +1 位作者 冯桂珍 王贺 《振动.测试与诊断》 EI CSCD 北大核心 2024年第4期733-739,828,共8页
针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊... 针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊控制器,利用神经网络的自学习特性产生完善的模糊规则,进而在传统函数型伸缩因子的基础上,将系统误差和误差变化率作为动态参数引入伸缩因子中,实现伸缩因子参数的自适应调整,解决了传统函数型伸缩因子因参数确定难度大导致控制效果差的问题。通过随机工况下的仿真分析和基于相似理论的缩尺实验,对所提出算法的有效性和工况自适应性进行了验证。结果表明,所提出的自适应变论域T-S模糊控制策略具有较强的工况适应性,在不同车速、路面激励下均可有效提高车辆的平顺性并保证轮胎接地安全性。 展开更多
关键词 主动悬架 变论域 伸缩因子 T-s模糊控制 神经模糊系统
下载PDF
U-G-S模式下现代大学附属学校建设的路径思考
6
作者 郭长江 《现代基础教育研究》 2024年第3期23-26,共4页
U-G-S(大学-政府-学校)三方联动是上海师范大学近年来建设现代大学附属学校的主要模式,上海师范大学、各区政府与中小学校高效协同合作,发挥各方优势,主动服务上海市政府建设“五个新城”的城市战略,办老百姓家门口的好学校。大学附属... U-G-S(大学-政府-学校)三方联动是上海师范大学近年来建设现代大学附属学校的主要模式,上海师范大学、各区政府与中小学校高效协同合作,发挥各方优势,主动服务上海市政府建设“五个新城”的城市战略,办老百姓家门口的好学校。大学附属学校分为挂牌学校和新建学校两种类型,研究从内在机制、实践路径和建设成效三个方面对两类学校的变革发展进行深度剖析,以期为大学附属学校建设提供宝贵经验。 展开更多
关键词 U-G-s模式 建设路径 大学附属学校
下载PDF
高校辅导员职业发展研究:现状、热点与展望——基于1999—2023年CSSCI期刊的文献计量分析
7
作者 赵帅 刘巍 《常州信息职业技术学院学报》 2024年第1期11-16,48,共7页
高校辅导员是坚定大学生理想信念和服务学生成长成才的中坚力量,其职业发展状况对高校立德树人具有重要影响。以CSSCI数据库中收录的506篇文献为研究样本,运用CiteSpace软件对我国高校辅导员职业发展的研究现状、热点主题及发展脉络开... 高校辅导员是坚定大学生理想信念和服务学生成长成才的中坚力量,其职业发展状况对高校立德树人具有重要影响。以CSSCI数据库中收录的506篇文献为研究样本,运用CiteSpace软件对我国高校辅导员职业发展的研究现状、热点主题及发展脉络开展可视化分析。研究发现:高校辅导员职业发展研究的发文量具有比较明显的政策导向性特征,尚未形成稳定的核心作者群体与合作机构群;现有研究主要围绕职业生涯规划、职业倦怠、职业认同等热点主题展开,并经历了初始起步、快速发展、深化拓展三个研究阶段。未来研究可以在鼓励跨学科合作、创新研究方法、完善具有中国特色的辅导员职业发展理论等方面加强探索。 展开更多
关键词 高校辅导员 职业发展 知识图谱 文献计量
下载PDF
Management Communication in University’s Digital Library
8
作者 LIU Yuan fang 1, LIN Li 2 (1. Library of Dalian University of Technology, Dalian 116024, China 2. 21 st Century Development and Research Center, Dalian 116023) 《上海交通大学学报》 EI CAS CSCD 北大核心 2003年第S1期250-254,共5页
Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surro... Digital library is a process of exploiting more scientific methods to construct a social knowledge network. It represents an “extension” from a traditional library. The core and essence is to build a favorable surroundings for knowledge accumulation, knowledge transfer and knowledge communication. Management communication covers information transfer and organization cooperation. Compared with traditional library, the management communication in digital library shoulders the commitment to support knowledge innovation. On the basis of analysis of the connotation of digital library, this paper analysed the aspects of management communication, including communicators, communication styles, contents, channels and outer communication, all of which tries to construct an integrated model of management communication in a digital library and turns a library into an actual “knowledge fountain”. 展开更多
关键词 universitys DIGITAL LIBRARY KNOWLEDGE MANAGEMENT MANAGEMENT COMMUNICATION
下载PDF
“优师计划”背景下师范生U-G-S培养模式价值、问题及对策
9
作者 尹婷婷 蒋丽 高鹏飞 《唐山师范学院学报》 2024年第3期106-109,共4页
从“优师计划”背景下师范生U-G-S培养模式价值分析入手,剖析“优师计划”背景下师范生U-G-S培养模式中地方政府、师范院校、中小学校、师范生四个基本要素各自存在问题,提出“四位一体”师范生U-G-S培养模式提升对策,以当地政府为主导... 从“优师计划”背景下师范生U-G-S培养模式价值分析入手,剖析“优师计划”背景下师范生U-G-S培养模式中地方政府、师范院校、中小学校、师范生四个基本要素各自存在问题,提出“四位一体”师范生U-G-S培养模式提升对策,以当地政府为主导、以师范院校为引领、以中小学校为核心、以师范生为主体,统筹各方培养资源和优势力量,激活多方利益主体意愿,助力乡村卓越教师的培养。 展开更多
关键词 “优师计划” 师范生 U-G-s培养模式
下载PDF
Hubble Tension Explanation from This Cosmological Model AΛΩ (Slow Bang Model, SB)
10
作者 Jean Perron 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第1期106-125,共20页
In this article we present a model of Hubble-Lemaître law using the notions of a transmitter (galaxy) and a receiver (MW) coupled to a model of the universe (Slow Bang Model, SB), based on a quantum approach of t... In this article we present a model of Hubble-Lemaître law using the notions of a transmitter (galaxy) and a receiver (MW) coupled to a model of the universe (Slow Bang Model, SB), based on a quantum approach of the evolution of space-time as well as an equation of state that retains all the infinitesimal terms. We find an explanation of the Hubble tension H<sub>0</sub>. Indeed, we have seen that this constant depends on the transceiver pair which can vary from the lowest observable value, from photons of the CMB (theoretical [km/s/Mpc]) to increasingly higher values depending on the earlier origin of the formation of the observed galaxy or cluster (ETG ~0.3 [Gy], ~74 [km/s/Mpc]). We have produced a theoretical table of the values of the constant according to the possible pairs of transmitter/receiver in the case where these galaxies follow the Hubble flow without large disturbance. The calculated theoretical values of the constant are in the order of magnitude of all values mentioned in past studies. Subsequently, we applied the models to 9 galaxies and COMA cluster and found that the models predict acceptable values of their distances and Hubble constant since these galaxies mainly follow the Hubble flow rather than the effects of a galaxy cluster or a group of clusters. In conclusion, we affirm that this Hubble tension does not really exist and it is rather the understanding of the meaning of this constant that is questioned. 展开更多
关键词 Model of the universe Cosmological Constant Hubble Constant Hubble’s Tension Hubble-Lemaître Law Hubble’s Flow
下载PDF
Experience with intraoperative radiotherapy for breast cancer: the Geneva University Hospital's experience
11
作者 Emanuela Esposito Michael Douek 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2016年第4期463-466,共4页
Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast cons... Background Breast conserving surgery along with adjuvant radiotherapy is effective in terms of local control and survival for early- stage breast cancer (1). External beam radiotherapy (EBRT) following breast conserving surgery has been shown to improve survival by preventing local recurrence, in the Early Breast Cancer Trialists' Collaborative Group meta-analysis (2). Standard radiotherapy typically requires numerous fractions over a 3-5 week period and is performed weeks or months after surgery or chemotherapy. 展开更多
关键词 IORT Experience with intraoperative radiotherapy for breast cancer the Geneva university Hospital’s experience
下载PDF
Motivations of Using Social Media Through Smartphones Among University Students in the United Arab Emirates
12
作者 Khayrat Ayyad 《Journalism and Mass Communication》 2019年第2期53-62,共10页
The aim of the study was to investigate gratifications of using social media among university students in the United Arab Emirates. Adopting the uses and gratification approach, the study investigates how the students... The aim of the study was to investigate gratifications of using social media among university students in the United Arab Emirates. Adopting the uses and gratification approach, the study investigates how the students utilize social media to gratify their personal, social, psychological, and educational needs. The study uses a questionnaire to collect data from a sample of 420 students from two universities in the UAE: University of Sharjah and Zayed University. In each university, two colleges were selected to represent art colleges and sciences colleges. The findings of the study show that 69.3% of the students are accessing social media more than five hours daily. 79.0% of the students access the social media through their smartphones. The main social media accessed are WhatsApp, Instagram, and Facebook. The main reasons of using social media are seeking information, communicating with friends, consuming time, and following up public affairs. 展开更多
关键词 sOCIAL MEDIA MOTIVATIONs smartphones universitys sTUDENTs UAE
下载PDF
Huazhong University of Science and Technology(H.U.S.T)
13
《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1992年第6期465-466,共2页
1.Origins and DevelopmentHuazhong University of Science andTechnology(H.U.S.T.)is one of the leadinguniversities in China directly under the StateCommission for Education.H.U.S.T.was founded by gathering thefaculty an... 1.Origins and DevelopmentHuazhong University of Science andTechnology(H.U.S.T.)is one of the leadinguniversities in China directly under the StateCommission for Education.H.U.S.T.was founded by gathering thefaculty and students as well as the equip- 展开更多
关键词 H.U.s.T Huazhong university of science and Technology
下载PDF
The Tension Cosmology, Largest Cosmic Structures and Explosions of Supernovae from SST
14
作者 Sylwester Kornowski 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第3期1029-1044,共16页
Here, using the Scale-Symmetric Theory (SST) we explain the cosmological tension and the origin of the largest cosmic structures. We show that a change in value of strong coupling constant for cold baryonic matter lea... Here, using the Scale-Symmetric Theory (SST) we explain the cosmological tension and the origin of the largest cosmic structures. We show that a change in value of strong coupling constant for cold baryonic matter leads to the disagreement in the galaxy clustering amplitude, quantified by the parameter S8. Within the same model we described the Hubble tension. We described also the mechanism that transforms the gravitational collapse into an explosion—it concerns the dynamics of virtual fields that lead to dark energy. Our calculations concern the Type Ia supernovae and the core-collapse supernovae. We calculated the quantized masses of the progenitors of supernovae, emitted total energy during explosion, and we calculated how much of the released energy was transferred to neutrinos. Value of the speed of sound in the strongly interacting matter measured at the LHC confirms that presented here model is correct. Our calculations show that the Universe is cyclic. 展开更多
关键词 scale-symmetric Theory Tension Cosmology Coupling Constants Parameters σ8 and s8 Largest Cosmic structures Dark Energy supernova Explosion Cyclic universe
下载PDF
Chinese University Research Ethics Construction to Build a Socialist Core Values as the Carrier
15
作者 Yongming Tang 《Journal of Contemporary Educational Research》 2019年第3期18-23,共6页
The teacher is the engineer of the human soul,and the noble teacher’s morality is the core professional quality of the teacher.Aiming at the problems existing in the construction of teachers’morality in colleges and... The teacher is the engineer of the human soul,and the noble teacher’s morality is the core professional quality of the teacher.Aiming at the problems existing in the construction of teachers’morality in colleges and universities,this paper puts forward the construction of college teachers’morality with the core values of socialism as the carrier.From improving the conditions for teachers’access,establishing and improving the teacher’s morality assessment mechanism,teacher cadre selection and employment mechanism,creating an environment of respecting teachers,cultural education,strengthening teachers’moral education and theoretical training,providing scientific research policy environent and solving teachers’actual conditions,permeate the core values of socialism throughout the whole process of the construction of teachers’morality in colleges and universities,from point to point and level to level,improve the quality of college teachers’moral construction. 展开更多
关键词 COLLEGEs and universITIEs CONNOTATION development cultural education sOCIALIsT core values teacher’s MORAL construction
下载PDF
Research on the Effect of Traditional Culture for the Ideological and Political Education of Post-90s University Students
16
作者 Yingyi Lei 《International Journal of Technology Management》 2015年第7期98-100,共3页
In this paper, we conduct the theoretical research on the effect of traditional culture for the ideological and political education of post-90s university students. The purpose of ideological and political education, ... In this paper, we conduct the theoretical research on the effect of traditional culture for the ideological and political education of post-90s university students. The purpose of ideological and political education, and reflects the dynamic characteristics and the development requirements of the people. Fundamental characteristics of people different from animals, is a person with subjective initiative, or initiative. The purpose of man' s subjective initiative is the activities of man. Traditional culture will effectively influence the students' attitude toward the classes. Therefore, it is more than necessary to combine the ideological and political education with traditional culture. 展开更多
关键词 Traditional Culture Ideological and Political Education Post-90s university students.
下载PDF
基于U-G-S合作的地方师范类院校教师教育模式研究
17
作者 周华丽 孙晓鲲 张志斌 《北京联合大学学报》 CAS 2024年第6期25-29,43,共6页
高校—政府—中小学(university-government-school,U-G-S)合作是各国高度重视的教师教育模式,该模式由高校、政府和中小学结成战略合作伙伴关系,协同促进未来教师的培养。基于U-S合作的内涵分析,梳理了美国教师“专业发展学校”模式、... 高校—政府—中小学(university-government-school,U-G-S)合作是各国高度重视的教师教育模式,该模式由高校、政府和中小学结成战略合作伙伴关系,协同促进未来教师的培养。基于U-S合作的内涵分析,梳理了美国教师“专业发展学校”模式、英国“以中小学为基地的教师培训学校”模式、法国教师教育“职前职后一体化”模式、芬兰“研究本位”的教师培养模式等国外有代表性的未来教师教育模式,阐述了基于U-G-S合作的未来教师教育模式在中国的发展状况。结合应用型大学关于教师教育的探索实践,对基于U-G-S合作的地方师范类院校教师教育模式优化提出建议。 展开更多
关键词 U-G-s合作 未来教师 教师教育模式 国际经验 应用型大学 地方师范类院校
下载PDF
A Comparative Study on Rhetoric of University Commencement Speech⁃es Between China and America
18
作者 王普聪 《海外英语》 2020年第17期263-265,共3页
The commencement speech becomes pivotal because it inspires,educates,and enlightens the graduates.Therefore,it is of great value to make a study on the speeches.This article analyzes two commencement speeches between ... The commencement speech becomes pivotal because it inspires,educates,and enlightens the graduates.Therefore,it is of great value to make a study on the speeches.This article analyzes two commencement speeches between China and America from the perspective of rhetoric,namely Aristotle’s appeals as the well as deductive and inductive method of reasoning and finds out that the similarities and differences of those two speeches concerning Aristotle’s appeals as the well as deductive and inductive method of reasoning. 展开更多
关键词 university commencement speech RHETORIC Aristotle’s appeals deductive and inductive method of reasoning
下载PDF
My Speech on China's Human Rights at the University of Nantes
19
作者 LI ERPING the School of Administration and Economics of the Kunming University of Science and Technology. 《The Journal of Human Rights》 2012年第3期20-21,共2页
At the invitation of Professor Francois Collart-Dutilleul from the University of Nantes in France, I attendedan international academic conference fo- cusing on the EU's foreign policies after the Lisbon Treaty, which... At the invitation of Professor Francois Collart-Dutilleul from the University of Nantes in France, I attendedan international academic conference fo- cusing on the EU's foreign policies after the Lisbon Treaty, which was held at the university from Nov. 21 to Dec. 1,2011. Afterwards Professor Collart-Dutilleul asked me to give a lecture on human rights in China to his PhD. students and the following is what I got from this ex- perience in France. 展开更多
关键词 My speech on China’s Human Rights at the university of Nantes
下载PDF
Sterve&Barrv’S University Sportswear 低成本,还是低成本
20
作者 陈翔飞 《中国制衣》 2006年第4期32-33,共2页
低价格这个"杀手锏"依靠的当然是低成本,品牌商都知道,也很想做到这一点,但像Sterve&Barry’这样依靠顺畅的供应链化繁为简、举重若轻的企业又能有多少呢?
关键词 美国 印度 Ba 美利坚合众国 北美洲 南亚 财政管理 成本 sterve&Barrv s university sportswear 店铺 全球采购 购物中心 零售行业 顾客 服装 成本控制 交期 供货商
下载PDF
上一页 1 2 112 下一页 到第
使用帮助 返回顶部