Theory of Flexural Shear, Bending and Torsion for a Thin-Walled Beam of Open Section

Aspects of the general Vlasov theory are examined separately as applied to a thin-walled channel section cantilever beam under free-end end loading. In particular, the flexural bending and shear that arise under transverse shear and axial torsional loading are each considered theoretically. These analyses involve the location of the shear centre at which transverse shear forces when applied do not produce torsion. This centre, when taken to be coincident with the centre of twist implies an equivalent reciprocal behaviour. That is, an axial torsion applied concentric with the shear centre will twist but not bend the beam. The respective bending and shear stress conversions are derived for each action applied to three aluminium alloy extruded channel sections mounted as cantilevers with a horizontal principal axis of symmetry. Bending and shear are considered more generally for other thin-walled sections when the transverse loading axes at the shear centre are not parallel to the section = s centroidal axes of principal second moments of area. The fixing at one end of the cantilever modifies the St Venant free angular twist and the free warping displacement. It is shown from the Wagner-Kappus torsion theory how the end constrained warping generates an axial stress distribution that varies with the length and across the cross-section for an axial torsion applied to the shear centre. It should be mentioned here for wider applications and validation of the Vlasov theory that attendant papers are to consider in detail bending and torsional loadings applied to other axes through each of the centroid and the web centre. Therein, both bending and twisting arise from transverse shear and axial torsion applied to each position being displaced from the shear centre. Here, the influence of the axis position upon the net axial and shear stress distributions is to be established. That is, the net axial stress from axial torsional loading is identified with the sum of axial stress due to bending and axial stress arising from constrained warping displacements at the fixing. The net shear stress distribution overlays the distributions from axial torsion and that from flexural shear under transverse loading. Both arise when transverse forces are displaced from the shear centre.

The “Dead Universe” Theory: Natural Separation of Galaxies Driven by the Remnants of a Supermassive Dead Universe

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.

An analysis of the interaction mechanism between the social history of medicine research and health communication from the perspective of mass communication

The mass communication model and interactive ritual chain theory,which serve as communication paradigms in the new media era,facilitate and enhance the synergy between the fields of social history of medicine and health communication.This study employs a comprehensive framework based on the five elements of the mass communication model:information source,communication subject,communication object,message content,and post-communication feedback.Additionally,it incorporates the interactive ritual chain theory to examine the evolving dynamics and developmental trajectory of research in the social history of medicine during the new media era.Conclusively,this paper acknowledges the existing interaction gaps in the interaction between health communication and the social history of medicine research while outlining the challenges for fostering collaboration and proposing strategic optimizations for effective integration.

Incorporating Ideological and Political Teaching Methods into the Course of Mongolian Medicine History

School education shoulders the great mission of cultivating people by virtue,and has an unshirkable responsibility in students ideological and political education.In addition to the main channel of ideological and political theory courses,it is also necessary to make ideological and political education permeate other professional courses,so as to realize moral education.The integration of Mongolian Medicine History and ideological and political education has unique advantages in terms of content and scientific attributes.However,when the two are organically integrated,it is an important step to successfully carry out ideological and political theories teaching in the course by choosing suitable cases,digging out the ideological and political meaning behind each case,and finally exerting a subtle influence on students thoughts.

Marx’s Theory of World History Explained: Basic Connotations and Contemporary Context

Marx’s theory of world history is an important part of his materialist conception of history(i.e., historical materialism). Marx and Engels summarized the evolution of social history and the laws behind it based on their observations and analyses of human activities and their material conditions in real life and raised the realistic possibility of “transformation of history into world history” in the future. From the Marxist perspective of world history, we attempt to catch a glimpse of his profound, scientific criticism of capitalism and understand the contemporaneity and supercontemporaneity of Marxism. Also, we try to perceive new issues of our time and develop a new theory grounded in the scientific, rational, and universal insights from Marxism. The study of Marx’s theory of world history and criticism of capitalism can help understand today’s major issues such as globalization and anti-globalization. In short, Marx’s theory of world history is of profound theoretical and practical significance.

An Insight Into the Promise and Problems of Combining Life History and Grounded Theory Research

This paper describes the research carried out in partial fulfilment of the degree of doctor of education. The study was qualitative in nature with a phenomenological interpretive paradigm dominating the philosophical approach. The research methods adopted combined life story and grounded theory. As far as the author has been able to determine there are very few, if any studies which have applied this approach specifically to this area of research which investigated the influence life history has on attitude to lifelong learning. Twenty five respondents were interviewed in face-to-face informal interviews. The main aim was to elicit the respondent＇s subjective interpretation of the interaction between school, family, work, and learning within their lives. The researcher was then able to identify when they occurred and what or who made them particularly meaningful. This paper describes how initial decisions were made regarding the substantive area for the research. Sampling technique and method for collecting the data is discussed and a worked example is given of how the data was analysed. It is intended that this paper will give an insight into the challenge of combining these two much debated methods of research. The empirical data lead to some interesting findings which educators and policy makers will find helpful in order to strengthen the school, college, and workplace interface.

The Triadic Dimension of The Communist Manifesto:Its Implications for Scientific Education in a New Era’s Youth Talent

The Communist Manifesto,as the initial comprehensive exposition of scientific socialist theory,encapsulates the scientific spirit of Marxism.As socialism with Chinese characteristics enters a new epoch,and the world is in the throes of an unprecedented century-long transformation,the importance of young talent in bolstering national scientific and technological progress grows ever more apparent.It is of paramount significance to profoundly understand and elucidate the theoretical heritage,practical guidance,and directional leadership that The Communist Manifesto provides to scientific education for the young talent of this new era from three perspectives:theory,practice,and history.This understanding is vital for young talents to further deepen their accurate comprehension of the governing laws of the Communist Party,the construction laws of socialism,and the development laws of human society.The nurturing of scientific spirit and scientific literacy in young talents has critical implications for providing talent support in building a world scientific and technological powerhouse.

A Dialogue with the Ancient and Reflection on the Interpretation of History of Bianque and Traditional Chinese Medicine

Based on the description of epidemic diseases in the chapter of “The Story of Bianque” in Records of Historian, the author has analyzed and explored the truthfulness of its background data and the possibility of the plague spreading at that time from both macro and micro angles. The symptoms of plague including chills formation of some doctrines in Traditional Chinese Medicine (TCM) such as exopathic heat disease doctrine, internal injury of spleen and stomach doctrine and epidemic febrile disease doctrine. The course of exogenous phenomena, the author has explored the effect on the initial medical theory, primitive religion and culture due to the spreading of epidemic diseases from the angles of epidemiology, the theory of images and figures, originated from epidemic diseases was proposed. The author also put forward some opinions on the relationship between epidemic diseases spreading and traditional education of TCM, sustained development of TCM.

Construction of Core Values of Teenagers from the Perspective of Marxist Theory

Marxist theory is an im portant so urce of socialism core value theory,and building so cialism core values under the guidance of Marxist theory is a major proposition that must be considered in the ideological and political education of the new era.Based on the Marxist materialist conception of history,this paper analyzed,from the Marxist perspective,the dialectical relationship between the free and full developm ent of people,the value of peo ple and social development,pointed out the existing problems in ideological and political education and the necessity of targeted education of the core values for teenagers,and proposed to develop and innovate the ways and methods of ideological and political education as well as carry out extensive education on the Marxism,socialism patriotism and Chinese traditional culture under the guidance of Marxist theory,for the purpose of helping teenagers build socialism core values and strengthen their faith in the socialist road with Chinese characteristics and the ideals and beliefs of communism.

On Chinese Civilization Being the Only Continued Civilization in the Viewpoint of the Modern National History Construction

Chinese civilization is the only ancient civilization thriving to this day seems to be a common view in the historical academia and Chinese society as well. Culture is a way that human beings actively adapt to the surroundings and keep consistence with environmental change. All cultures created by human beings are changing, so is the Chinese culture. The physical and cultural evolution presented by the archaeological discoveries and related historical researches show that Chinese culture is multi-sourced and multicultural. This is the secret for the Chinese culture to retain its vitality. The reasons that Chinese civilization is the only civilization thriving to this day among all of ancient civilizations in the world include the ancestral worship, the identity to common ancestors, traditions of writing pedigrees and history books, the longhistory Chinese character system and the creative thinking and cultural methods of interpreting new thoughts by using traditional Chinese thinking and cultural structures. Especially in modern times, impacted by the nationalism trend, the national state narration built for meeting the requirement of the national state"historical memory"left us the strong impression of Chinese civilization being the only continued civilization and fostered the affective identification with the common history.

Life Cycle-Stages in History of Tourism in the Republic of Macedonia

The aim of this paper is to explore the historical development of tourism through identified stages of the life cycle （TALC） model. Many of the major destinations in the world have a far longer history and go through various successive cycles with different phases. In this article, we present the case of Macedonia, as a Balkan mainland tourist destination. The analysis is based on primary and secondary data sources for an extended period. The article shows the life cycle of the tourist destination in combination and adaptation of new TALC model that matches regulation theories and the Ford paradigm of global model for tourism development of mass production and consumption. Finally, the paper suggests and recommends practical advice aimed at motivating key players in the formation of economic policy for tourism development.

Edmund Becher Wilson＇s Early Contributions to the Chromosome Theory of Heredity： A Case Study of Instrumentalism in Science

The chromosome theory of inheritance was established during the three first decades of the 20th century. During the early stage of its substantiating, there were lots of puzzles and little evidence that could validate it. The cytological processes were obscure and several scientists maintained serious doubts concerning the existence of a connection between Mendel＇s principles and the behaviour of chromosomes during cell division. It was vital to associate an external, observable characteristic of the organism to a specific chromosome, and this was achieved when sex was connected to special chromosomes. At that time, however, some important scholars refused to accept or delayed acceptance of the conception that the hereditary factors （later called genes） were physical entities located along the chromosomes. Such was the case of Thomas Morgan （1866-1945） and William Bateson （186 I- 1926）. Their attitudes could be explained by considering the doubtful ground of the hypothesis at that time. It is more difficult, however, to understand the attitude of Edmund Beecher Wilson （1856-1939）. Being an expert in cytology he was acquainted with all the difficulties concerning the chromosome hypothesis. Nonetheless, from 1905 onward, he attributed little weight to the problems and dedicated a notable effort to obtaining evidence that could have grounded it. This paper analyses Wilson＇s attitude focusing on his studies from 1900 to 1915 and the scientific context of this period. This study led to the conclusion that Wilson＇s attitude could be explained in methodological terms by the adoption of an instrumentalist attitude, while Bateson and Morgan adopted a realistic perspective.

A Brief History of the Development of Integrated Traditional Chinese and Western Medicine

This article introduces the history of the integration of Chinese and Western medicine,from Zhang Xichun,a representative of the Huitong School of Chinese and Western Medicine,and the historical"abolition of traditional Chinese medicine",and"the scientificization of Chinese medicine"to"Integration of traditional Chinese medicine and Western medicine",passing the tortuous development.The integration of traditional Chinese and Western medicine has achieved fruitful results from the intense divergence in understanding to education,scientific research,clinical practice,and theoretical research.This article discusses the development process of the integration of traditional Chinese and Western medicine in detail from multiple dimensions such as history,reality,theory,and practice.In particular,it introduces Zhang Xichun's views and practice of integrated traditional Chinese and Western medicine,the theory and practice of modern integrated traditional Chinese and Western medicine,the main achievements of integrated traditional Chinese and western medicine,and typical cases of integrated traditional Chinese and western medicine.It provides reference for the vast number of integrated Chinese and Western medicine workers.

Strain Transfer Mechanism of Grating Ends Fiber Bragg Grating for Structural Health Monitoring

The grating ends bonding fiber Bragg grating(FBG)sensor has been widely used in sensor packages such as substrate type and clamp type for health monitoring of large structures.However,owing to the shear deformation of the adhesive layer of FBG,the strain measured by FBG is often different from the strain of actual matrix,which causes strain measurement errors.This investigation aims at improving the measurement accuracy of strain for the grating ends surface-bonded FBG.To fulfill this objective,a strain transfer equation of the grating ends bonding FBG is derived,and a theoretical model of the average strain transfer from the matrix to the optical fiber is developed.Moreover,parameters that influence the average strain transfer rate from the matrix to the optical fiber are analyzed.A selection scheme of bonding parameters by numerical simulation is provided,which is significantly advantageous over that of the grating bonding FBG.The theoretical equation is verified by finite element method(FEM).Compared with the existing model,the proposed model has higher measurement accuracy.Experimental tests are performed to validate the effectiveness of the proposed model on the equalintensity cantilever beam,whose surface is attached to the bare FBG with grating ends bonding and strain gauge by using epoxy glue.The results show that there is a great agreement between the outcome of the bare FBG and that of the strain gauge,and the corrected strain is closer to the true strain.The proposed model provides a theoretical basis for the design of the grating ends surface-bonded FBG strain sensor for health monitoring of large structures.

At the Beginning of Learning Studies There Was the Maze

A generally forgotten means of observing the developmental stages of scientific psychology is the study of maze devices. Considered in ancient times as a symbol of the process of moving in the direction of knowledge, the labyrinth, or maze, was at the centre of psychologists’ attention from the end of the 19th century. The current paper aims to reconstruct the history of the early years of maze learning, starting from the original interests of the experimenters in brain physiology or in mental evolution, and to examine how the experiments they designed continued to be important in the general theory of learning throughout the 20th century: maze studies helped uncover general principles about learning that can be applied to many species, including humans. At the beginning of the 21st century the question has become: what parts of the brain are used for spatial learning and memory, as shown by the Morris water maze, which is very popular in studies of behavioural neuroscience.

Basic theories and development of Miao medicine

Miao is an important ethnic minority in China.Miao medicine(MM)is a pivotal of traditional Chinese medicine.It is an accumulation of the Miao people's experience fighting against diseases for thousands of years and has been an important part of the Miao culture.The origin of MM is closely related to Miao culture,customs,and habits.MM gradually formed a traditional medical theoretical system with obvious regional characteristics,distinctive cultural characteristics,and unique efficacy.In this paper,we intro-duce and review the unique theoretical system of MM,including the basic theory of MM,the theory of medicine,nature,taste,and channel tropism,and the theory of entering the shelf.In addition,we summarize the development of MM to provide an overview of the theoretical characteristics and industrialisation of MM that is accessible to everyone.

Evaluation of Several Phases in the Development of Management Accounting

This paper discusses three issues, raised by Relevance Lost （Johnson ＆ Kaplan, 1987）, about historical evaluation of the development of management accounting. The first issue is when management accounting system was formed; the second is how to evaluate its development in subsequent decades; the third is how to evaluate the development of practice and research of management accounting in almost twenty years after Relevance Lost was published. The role of Relevance Lost in practice and theoretical research of management accounting is widely recognized, and the disagreement with it in this paper is in the specific area of the development history of management accounting. The authors of this paper believe that the development, through having its ups and downs over time, is generally speaking a continuous process, not separated by disconnected phases, leaping from one to another. Along with the progress in practice and research, researchers and practitioners are deepening their understanding about the theoretical foundation and practical development of management accounting. The history of development of management accounting is consistent with the process people gradually understand it.

Generation and Application of A Standardized Load-Time History to Tubular T-joints in Offshore Platforms

Marine structures are mostly made of metals and always experience complex random loading during their service periods. The fatigue crack growth behaviors of metal materials have been proved from laboratory tests to be sensitive to the loading sequence encountered. In order to take account of the loading sequence effect, fatigue life prediction should be based on fatigue crack propagation（FCP） theory rather than the currently used cumulative fatigue damage（CFD） theory. A unified fatigue life prediction（UFLP） method for marine structures has been proposed by the authors＇ group. In order to apply the UFLP method for newly designed structures, authorities such as the classification societies should provide a standardized load-time history（SLH） such as the TWIST and FALSTAFF sequences for transport and fighter aircraft. This paper mainly aims at proposing a procedure to generate the SLHs for marine structures based on a short-term loading sample and to provide an illustration on how to use the presented SLH to a typical tubular T-joint in an offshore platform based on the UFLP method.

Logical Interpretation of China’s Science and Technology Development Strategy in the New Era

It has been recognized that self-reliance and self-improvement of science and technology is a necessary choice of taking the independent innovation path with Chinese characteristics in the new era,which provides strategic support for the comprehensive construction of a modern socialist country.Containing the theoretical truth of the Chinese Marxist view of science and technology in the 21st century,it follows the 70-year development path of science and technology in New China,and responds to the scientific and technological strategic choice of building a modern socialist country in an all-round way in the new era.This is not only a theoretical deepening of General Secretary Xi Jinping’s important statement on scientific and technological innovation,but also a practical guide for China to implement scientific and technological innovation in the new era.