Lumbar Exoskeleton, as an important instance of wearable exoskeleton, has broad application prospects in logistics, construction, and other industries. Specifically, in the working scenarios that require long-term and repeated bending and rising movements, active lumbar exoskeleton can provide effective protection and flexible assistance to wear’s waist muscles and bones, which will significantly reduce the risk of lumbar muscle strain. How to improve the human-machine coupling and enhance the assistance performance are the main challenges for ALE’s development. Based on the biomechanical (...) analysis of the movement of lifting heavy objects from bottom up, this paper proposes a lightweight but powerful ALE, named as SIAT-WEXv2, which can output maximum assistive force of 28 N. Additionally, we use robust fuzzy adaptive algorithm to improve SIAT-WEXv2’s antidisturbance ability, so that it can provide continuous and supple assistance for wearer. Electromyography signals of the lumbar erector spinae from ten subjects in two experimental cases were collected to evaluate the effectiveness of our new ALE. The experimental results indicate that the reduction of iEMG signal at LES decreased monotonically from 60% ± 5.5% to 40.5% ± 6.5% as the weight of lifting load increased from 0 to 25 kg. (shrink)

Cet article retrace les changements intervenus au sein du militantisme féministe chinois dans un climat de détérioration politique deux décennies après la Quatrième Conférence mondiale sur les femmes (QCMF) en 1995. Il met en lumière les actions novatrices menées par les jeunes féministes, de même que l’intense surveillance qu’exerce, sur le militantisme organisé, un État totalitaire qui craint de perdre son pouvoir. Bien que la sphère publique et le cyber espace ne laissent guère beaucoup de place à l’activisme, les féministes (...) chinoises se sont mobilisées pour continuer d’expérimenter de nouvelles façons d’exiger l’égalité de genre et de poursuivre des transformations sociales et culturelles. (shrink)

Similar case analysis (SCA) is an essential topic in legal artificial intelligence, serving as a reference for legal professionals. Most existing works treat SCA as a traditional text classification task and ignore some important legal elements that affect the verdict and case similarity, like legal events, and thus are easily misled by semantic structure. To address this issue, we propose a Legal Event-Context Model named LECM to improve the accuracy and interpretability of SCA based on Chinese legal corpus. The event-context (...) integration mechanism, which is an essential component of the LECM, is proposed to integrate the legal event and context information based on the attention mechanism, enabling legal events to be associated with their corresponding relevant contexts. We introduce an event detection module to obtain the legal event information, which is pre-trained on a legal event detection dataset to avoid labeling events manually. We conduct extensive experiments on two SCA tasks, i.e., similar case matching (SCM) and similar case retrieval (SCR). Compared with baseline models, LECM is validated by about 13% and 11% average improvement in terms of mean average precision and accuracy respectively, for SCR and SCM tasks. These results indicate that LECM effectively utilizes event-context knowledge to enhance SCA performance and its potential application in various legal document analysis tasks. (shrink)

Digital images of cultural heritage (CH) contain rich semantic information. However, today’s semantic representations of CH images fail to fully reveal the content entities and context within these vital surrogates. This paper draws on the fields of image research and digital humanities to propose a systematic methodology and a technical route for semantic enrichment of CH digital images. This new methodology systematically applies a series of procedures including: semantic annotation, entity-based enrichment, establishing internal relations, event-centric enrichment, defining hierarchy relations between (...) properties text annotation, and finally, named entity recognition in order to ultimately provide fine-grained contextual semantic content disclosure. The feasibility and advantages of the proposed semantic enrichment methods for semantic representation are demonstrated via a visual display platform for digital images of CH built to represent the Wutai Mountain Map, a typical Dunhuang mural. This study proves that semantic enrichment offers a promising new model for exposing content at a fine-grained level, and establishing a rich semantic network centered on the content of digital images of CH. (shrink)

As the autonomous vehicles technology gradually enters the public eye, understanding consumers' psychological motivations for accepting autonomous vehicles is critical for the development of autonomous vehicles and society. Previously, researchers have explored the determinants of fully autonomous vehicles but the relevant research is far from enough. Moreover, the relationship between anthropomorphism and users' behavior has been ignored to a large extent. Therefore, this study aim to fill the gap by using anthropomorphism and the unified theory of acceptance and use of (...) technology to explore how system attributes and UTAUT attributes influence consumers' acceptance behavior. The data were collected via questionnaire survey conducted in Beijing, China, which can be a promising early adopter of AVs. Structural equation modeling was used to analyze the data. The results reveal that perceived anthropomorphism and perceived intelligence have a direct positive influence on the adoption of AVs; performance expectancy, effort expectancy, and facilitating conditions have an indirect positive influence on intention to adopt AVs. Also, this research contributes to the literature by enriching studies on psychological determinants of autonomous vehicles' adoption by taking an initial step to highlight anthropomorphism perceptions. This can provide managerial implications for policy-makers and businesses on how to effectively allocate resources to enhance autonomous vehicle adoption. (shrink)

The study is intended to examine the impact of crisis responsibility on the reputation of the Chinese public sector organization during the COVID-19 crisis. In addition to that, the study has also examined the mediating role of crisis response strategy in the relationship between crisis responsibility and the reputation of the Chinese public sector organization during the COVID-19 crisis. Lastly, the study has also examined the moderating role of internal crisis communication in the relationship between the crisis responsibility and crisis (...) response strategy of the Chinese public sector organization during COVID-19. This study bases on a quantitative research approach along with a cross-sectional research design. The population of the study is the Chinese public sector organization companies. Data is collected from the employees working in Chinese public sector organizations. The current study used 500 sample sizes; 205 valid responses are received which were used in data analysis. The SEM-PLS is used for the data analysis. The result of the study indicates that all the direct hypotheses are accepted significantly, which indicates that the crisis responsibility and crisis response strategy are significant determinants of organizational reputation during the COVID-19. In a similar vein, the crisis responsibility has placed a significant impact on the crisis response strategy of Chinese organizations during COVID-19. The study is among the pioneer studies on crisis responsibility in the Chinese public sector organization during COVID-19. The study has employed an extended framework encircling the literature on crisis responsibility, crisis response strategy, internal crisis communication, and organizational reputation. Theoretically, the study has extended the situational crisis communication theory framework by incorporating internal crisis communication in the framework. (shrink)

Travel route preferences can strongly interact with the events that happened in networked traveling, and this coevolving phenomena are essential in providing theoretical foundations for travel route recommendation and predicting collective behaviour in social systems. While most literature puts the focus on route recommendation of individual scenic spots instead of city travel, we propose a novel approach named City Travel Route Recommendation based on Sequential Events Similarity by applying the coevolving spreading dynamics of the city tour networks and mine the (...) travel spatiotemporal patterns in the networks. First, we present the Event Sequence Similarity Measurement Method based on modelling tourists’ travel sequences. The method can help measure similarities in various city travel routes, which combine different scenic types, time slots, and relative locations. Second, by applying the user preference learning method based on scenic type, we learn from the user’s city travel historical data and compute the personalized travel preference. Finally, we verify our algorithm by collecting data of 54 city travellers of their historical spatiotemporal routes in the ten most popular cities from Mafeng.com. CTRR-SES shows better performance in predicting the user’s new city travel sequence fitting the user’s individual preference. (shrink)

The present study examines how collectivism, an important cultural value, plays a moderating role in the association between job attitudes and actual turnover in a sample of 781 Chinese female workers. Results show that collectivism moderates the relationships between job attitude variables and turnover intention. Job satisfaction and organizational commitment are more powerful in predicting turnover intention when levels of collectivism are high rather than low. However, collectivism only moderates the mediation of turnover intention in the relationship between job satisfaction (...) and actual turnover. The study deepens the understanding of the moderating effect of cultural values in organizational behavioral outcomes as Taras et al. suggest. Also discussed are the practical implications on how to control the voluntary termination of female laborers who constitute an important part in Chinese manufacturing. (shrink)

Volunteers play an indispensable role in several major events and activities. The purpose of this study is to review studies on volunteer motivation from 2000 to 2021 and to discover the development trends in this field. The Web of Science Core Collection is the main literature data resource, from which 162 papers on volunteer motivation published in the SSCI were selected. Using two visualization analysis tools, CiteSpace and VOSviewer, this study conducts bibliometric analysis and systematic review from multiple dimensions, identifying (...) the authors, countries, institutions, and journals with high productivity in this field. Additionally, we explored highly cited papers, authors, and journals in this field. This study aims to find the research hotspots and theoretical basis through co-occurrence analysis and cluster analysis of keywords and explore the evolution through the time zone map drawn with CiteSpace. Moreover, we focus on the influence of Chinese and Western cultures on volunteer motivation. It was found that Chinese volunteers were more affected by collectivism, whereas American volunteers were more affected by individualism. The conclusion of this study constructs a clear framework for research on volunteer motivation, which provides researchers with a deeper and thorough understanding of the connotation of volunteer motivation, providing guidance and support for future research in this field. (shrink)

This study aimed to develop the Three-Dimensional Filial Piety Scale and explore its psychometric properties. Based on Wang’s Three-Dimensional Filial Piety Model, our study employed a review of the current literature, in-depth interviews, and feedback from experts and the target group. An initial 36-item scale using a bipolar Likert 6-point rating scale was developed. Then item analysis and exploratory factor analysis were conducted with sample 1 (n = 617) to explore the dimensions and final items, and a 15-item scale (...) with three factors was obtained. After that, confirmatory factor analysis was conducted to validate the 3-factor structure obtained through exploratory factor analysis with sample 2 (n = 585). Next, we tested criterion-related validity with sample 3 (n = 248) and test-retest reliability with sample 4 (n = 67). The results supported the model on which this scale was based and showed three dimensions of filial piety, namely the balance of interests, good affections, and family role norms. As a valid, reliable scale, the Three-Dimensional Filial Piety Scale can therefore be used in the Chinese context to measure filial piety for people of different genders, ages, and cohabitation situations. (shrink)

In "World Literature, Industrialization, and the Two Faces of Contemporary Chinese Science Fiction" Yiping Wang discusses contemporary Chinese science fiction against the backdrop of the influence of world literature and the development of industrialization in China. Wang argues that two sides represented respectively by Liu Cixin and Han Song constitute the feature of contemporary Chinese science fiction. The side characterized by the works of Liu Cixin is the close connection with world science fiction and the positive attitude and (...) consistency with technological innovation and industrialization in China while the other side has Han Song as its representative, whose works, with similarities to high literature of world canons and the mainstream Chinese literature, reflect on the development of technology and industrialization focusing on individuals and disasters in the shadow of modernization. These two sides join together in the illustration of the basic image of science fiction in contemporary Chinese literature. By absorbing the essence of world literature and echoing the concerns of the nation, contemporary Chinese science fiction surmounts the hierarchy of literary genres and make its way into the active center of world literature. (shrink)

Although the major part of the chapter’s investigation is on the mode and acts of remembering in Chan Buddhism, Wang opens with a survey of the traditional Indian Buddhist context of remembering, its differentiation of wholesome and unwholesome acts of remembering, and its critique of unwholesome and discursive modes of memory, as Buddhism evolves from Theravada to Mahayana. This context is a necessary condition under which the interaction between Indian and Chinese Buddhist ideologies, or between the inherited tradition and (...) its Chinese Chan appropriation, becomes possible. Wang then examines how Chan masters, from early to classical period, appropriate and develop the traditional distinction of wholesome and unwholesome remembrance and its affirmation of the former and critique of the latter in a Chinese context. As opposed to the widespread Chan hierarchy of forgetfulness over remembrance that has shaped much of our modern understanding, Wang presents a rediscovery of Chan teachings on remembrance, disclosing how remembrance is related to the internal tension between the positive attitude towards the traditional cultivation and the iconoclastic attitude towards it in various Chan ideologies. The approach of these examinations is a combination of textual/contextual inquiry, conceptual analysis and philosophical interpretation. The part of “summary and reflections” includes a review of the uniqueness of the Chan mode of remembering, an analysis of its ethical dimension by using, and comparing it with, Ricoeur’s ethics of memory, and an exploration of the paradoxical relationship between remembering and forgetting. (shrink)

In "Worlding World Literatures and Coetzee's Disgrace" Miaomiao Wang explores the concept of world literature as world-making activity, which gains in elliptical refraction, translation, and mode of reading. With the example of J.M. Coetzee's Disgrace, Wang illustrates cultural variations between the original English text and the Chinese translation of Disgrace through cultural filtering and literary misreading. Further, Wang analyzes images of "otherness" in Coetzee's text with regard to East Asia, especially in China, through the assimilation of the (...) cultural rules of national literature and its literary discourse thus making it part of world literature. Wang argues that cultural variation and the images of otherness can be attributed global importance as an emerging world literary canon and its aesthetic ideology. (shrink)

The Zhoushu 《周書》 section of the Shangshu 《尚書》, reflecting on the dynastic changes from Xia to Shang and from Shang to Zhou, understands “heavenly mandate” as the common element that brings about all changes within a historical continuum. For Zhoushu, it is “heavenly mandate” that makes historical continuity possible. Furthermore, “heavenly mandate” is understood to manifest itself with the hopes of the common people and to be realized by the freewill of the king. Thus historical changes can be accommodated. The (...) Chinese idea of historical identity continued to be enriched after the Chun Qiu 春秋 Period. But in terms of its characteristic understandings of history, it remained much the same as in the Zhoushu: Interpreting history with a common element recognized therein, with the stress always on continuity though historical changes are accommodated from a humanist perspective. (shrink)

ObjectiveTo explore the relationships between dispositional mindfulness and their post-traumatic stress symptoms of emergency nurses, and the mediating effects of coping styles and emotional exhaustion.MethodsA cross-sectional survey study was conducted to collect data on DM, coping styles, EE, and PTSS among 571 emergency nurses from 20 hospitals in Chongqing, China. Correlation and structural equation models were used to evaluate the relationship among variables.ResultsEmergency nurses with lower dispositional mindfulness, higher emotional exhaustion and preference for negative coping revealed more PTSS. The effect (...) of NC on PTSS was partially mediated by emotional exhaustion. Negative coping and emotional exhaustion played concurrent and sequential mediating roles between dispositional mindfulness and PTSS.ConclusionThis study has made a significant contribution to existing literature. It was suggested to develop interventions aimed at enhancing mindfulness, reducing negative coping strategies, and alleviating emotional exhaustion, which may be effective at reducing or alleviating post-traumatic stress symptoms of emergency nurses. (shrink)

This study aimed to explore the association between the functioning of family environment and academic burnout of Chinese college students as well as the mediating effects of the interpersonal resource and intrapersonal resource [i.e., positive psychological capital ] in this relationship. A total of 1971 Chinese undergraduates were involved in an online questionnaire survey and data analysis. It was found that family cohesion and adaptability was negatively related to academic burnout. Mediation analyses demonstrated that family cohesion and adaptability did not (...) directly affect academic burnout, but indirectly through increasing PsyCap, and through enhancing peer support and then increasing PsyCap in serial. Meanwhile, the relationship between family cohesion and adaptability and academic burnout was not mediated by peer support alone. These findings highlight the family environment’s crucial role in youth mental health and positive development in the college context. (shrink)

In user cluster analysis, users with the same or similar behavior characteristics are divided into the same group by iterative update clustering, and the core and larger user groups are detected. In this paper, we present the formulation and data mining of the correlation rules based on the clustering algorithm through the definition and procedure of the algorithm. In addition, based on the idea of the K-mode clustering algorithm, this paper proposes a clustering method combining related rules with multivalued discrete (...) features. In this paper, we construct a method to calculate the similarity between users using Jaccard distance and combine correlation rules with Jaccard distances to improve the similarity between users. Next, we propose a clustering method suitable for MDF. Finally, the basic K-mode algorithm is improved by the similarity measure method combining the correlation rule with the Jaccard distance and the cluster center update method which is the ARMDKM algorithm proposed in this paper. This method solves the problem that the MDF cannot be effectively processed in the traditional model and demonstrates its theoretical correctness. This experiment verifies the correctness of the new method by clustering purity, entropy, contour, and other indicators. (shrink)

The sampling-based motion planner is the mainstream method to solve the motion planning problem in high-dimensional space. In the process of exploring robot configuration space, this type of algorithm needs to perform collision query on a large number of samples, which greatly limits their planning efficiency. Therefore, this paper uses machine learning methods to establish a probabilistic model of the obstacle region in configuration space by learning a large number of labeled samples. Based on this, the high-dimensional samples’ rapid collision (...) query is realized. The influence of number of Gaussian components on the fitting accuracy is analyzed in detail, and a self-adaptive model training method based on Greedy expectation-maximization algorithm is proposed. At the same time, this method has the capability of online updating and can eliminate model fitting errors due to environmental changes. Finally, the model is combined with a variety of sampling-based motion planners and is validated in multiple sets of simulations and real world experiments. The results show that, compared with traditional methods, the proposed method has significantly improved the planning efficiency. (shrink)

The experience of family harmony, as an individual's subjective evaluation of harmonious family relations, has an important influence on the development of their physical and mental health. This study aimed to develop the College Students' Experience of Family Harmony Questionnaire that is fit for college students in China. On the basis of literature analysis and survey with questionnaires, five pairs of opposite assessment indexes were constructed in this paper, namely, Atmosphere of family, Responsibility to housework, Time-sharing, Seeking help, and Supporting (...) family members. Items of this questionnaire were collected from investigation, relevant scales, and discussion with experts. Here, 562 college students were selected for the pre-test and 696 for the formal test. The results showed that, except for the dimension of refusing housework, which has been deleted, other dimensions remain unchanged, and the final nine dimensions accounted for 66.03% of variance variation. Furthermore, the result of confirmatory factor analysis indicates that the model fit well with the data in construct validity [χ2/df = 2.71, Incremental Fit Index = 0.90, Tucker–Lewis Index = 0.89, Comparative Fit Index = 0.90, root mean square error of approximation = 0.05, standardized root mean square residual = 0.05]. The Cronbach's alpha coefficient of this questionnaire was 0.97. The split-half reliability was 0.92, and the test–retest reliability was 0.75 for the total questionnaire. The total score of the questionnaire was significantly positively correlated with the total score of family function, family cohesion, family adaptability, and well-being, and it had a significant negative correlation with loneliness. The results showed that the final structure was reasonable, and reliability and validity conformed to the requirements of psychometrics. Therefore, the questionnaire developed in this study can be used as a valid instrument for assessing the experience of family harmony among college students in China. (shrink)

The correspondence of a sensory object to the category of a descriptive statement requires a reflexive-identity of the object, and such a reflexive-identity is primarily based on the cognition of spatiality. Spatiality is, however, constituted through visual perception. There are only two occasions on which definitive reflexive-identity is exemplified: the infinitesimal point and the infinite "One," and others are just human stipulations that meet pragmatic needs of rough identification of things at hand. However, if a spatial point is not different (...) from any so-called "other" spatial point, to validate the reflexive identity of any spatial point implies a validation of the reflexive identity of all spatial points. Thus, as "one" and "many" here become absolutely unitary, the infinitely small and the infinitely immense are identical. /// 感觉对象如果要与描述的范畴结构对应，必须以对象的自返同一性为基点，这 种自返同一性原始地建基于对空间性的认知。然而，空间性是通过视觉感知才得到建 构的。确切的自返同一性只有在以下两种情形中才可以被简单为民义地建构:即，无 穷小的点与无穷大的 "太一"。对于在元穷大与无穷小之间的各种客体对象而言，其 自返同一性只是思想强加的，是按照实用目的进行概念化加工的结果。由于任一空间 点和任何所谓"其他"的空间点是无差别的，对任一空间点的同一性的确立也就是对 所有空间点的同一性的确立。结果是，既然 "一" 与 "多" 是绝对同一，无穷小与无 穷大也必然是绝对同一。. (shrink)

Value co-creation goes through the stage of co-production, customer experience, service-dominant logic, and service ecosystem. The integration of science and technology has become a key factor to the process of VCC. The rise and application of artificial intelligence technology has added a new driving force to VCC and began to affect its original practical logic. Based on the consumer perspective, this study uses Q-methodology to measure consumer cognitive attitude toward the use of AI technology in VCC, aiming to explore the (...) key factors that affect VCC. The study found that content quality, information security, efficiency concern, and degree of manipulation have become the important concerns of consumers for VCC under AI integration. Moreover, their different statements have their specific focus and direction. The study demonstrates and analyzes the importance of the four factors and proposes the combination of human and non-human actors to shape the new model of VCC in the future, which is worth further deepening and exploring for academia and enterprises. (shrink)

This research aimed to explore the impact of organizational commitment on turnover intention of substitute teachers in public primary schools in Xuzhou, and applied psychological capital as a mediator variable to establish a research model. A questionnaire was conducted with 400 substitute teachers using convenience sampling. The results show that organizational commitment has a negative yet significant effect on turnover intention. It also shows positive impact on psychological capital. Furthermore, psychological capital is shown to negatively impact turnover intention, while having (...) a mediating effect between organizational commitment and turnover intention. (shrink)

The argument from faultless disagreement employed by the relativist purports to show that contextualism falls short of explaining cases of faultless disagreement. The demonstration is intended to give credence to the relativist semantics of epistemic modality expressions. In this paper we present some cases showing that even though cases of faultless disagreement do reveal some intrinsic features of epistemic modality claims, they do not support the relativist semantics. The sophistication of faultless disagreement goes beyond what the relativist semantics can cope (...) with. We also advance an epistemologically oriented proposal to account for faultless disagreement. (shrink)

The electroencephalogram is the most common method used to study emotions and capture electrical brain activity changes. Long short-term memory processes the temporal characteristics of data and is mostly used for emotional text and speech recognition. Since an EEG involves a time series signal, this article mainly studied the introduction of LSTM for emotional EEG recognition. First, an ALL-LSTM model with a four-layered LSTM network was established in which the average accuracy rate for emotional classification reached 86.48%. Second, four EEG (...) characteristics were extracted via the wavelet transform using the LSTM-based sentiment classification network. The experimental results showed that the best average classification accuracy of these four features was 73.48%. This was 13% lower than in the ALL-LSTM model, indicating that inappropriate feature extraction methods could destroy the timing of EEG signals. LSTM can be used to thoroughly examine EEG signal timing and preprocessed EEG data. The accuracy and stability of the ALL-LSTM model are significantly superior to those of the WT-LSTM model. The result showed that the process of emotion generation based on EEG is sequential. Compared with EEG emotion extraction using WT, the raw EEG signal’s timing is more suitable for the LSTM network. (shrink)

In addition to what we know as benevolent creativity, which involves originality and usefulness, creativity also includes malevolent creativity, which involves the application of creative ideas to intentionally harm others. This study aimed to explore the environmental and individual predictors of malevolent creativity. We investigated the relationship among childhood neglect, Dark Triad personality traits and malevolent creativity and examined the mediating role of Dark Triad personality. A large sample of Chinese undergraduate students completed the childhood neglect scale, the 12-item Dirty (...) Dozen and the Malevolent Creativity Behavior Scale. Structural equation modeling demonstrated that childhood neglect was positively related to individual malevolent creativity, and the Dark Triad partially mediated this relationship. Additionally, gender differences were found, such that childhood neglect had a stronger effect on malevolent creativity through the Dark Triad among males than females. The results were discussed from the perspectives of life history theory and social information processing theory. (shrink)

BackgroundVaccination has been considered one of the most effective public health interventions. In the context of the global epidemic of coronavirus disease 2019, it remains unclear what role general vaccination attitudes and perceptions have on the acceptance of COVID-19 vaccine.ObjectiveThis study aims to explore the impact of general attitudes and perceptions toward vaccination on the acceptance of a newly developed vaccine, taking COVID-19 vaccines as an example.MethodA cross-sectional survey was conducted among 2,013 Chinese adult participants. Generalized order logistic regression and (...) path analysis models were used to analyze impacts of general attitudes and perceptions toward vaccination on the acceptance of the COVID-19 vaccine.ResultsThe prevalence of hesitancy to vaccination in general is 49.9% among the Chinese adult population. General perceptions of vaccination were associated with corresponding perceptions of the COVID-19 vaccine. A “no hesitancy” attitude toward vaccination is a significant determinant of future COVID-19 vaccination compared to vaccine refusers, and perceptions of COVID-19 vaccine remain a significant determinant for the acceptance of the COVID-19 vaccine. Path analysis indicates that perceptions of the importance and safety of vaccination have a positive overall effect on the acceptance of the COVID-19 vaccine, and that general perceptions of vaccination as a whole on each measure indirectly influence the acceptance of the COVID-19 vaccine.ConclusionGeneral attitudes and perceptions toward vaccination were associated with those of the COVID-19 vaccine and future vaccination intention. To prepare for possible emergence of diseases in the future, routine health campaigns should be launched by relevant government departments and vaccination authorities to enhance the overall awareness and knowledge of vaccination among the public and to ensure optimal vaccination experience. In addition, targeted knowledge dissemination and mass mobilizations should be urged for newly developed vaccines when some specific infectious diseases emerge, such as COVID-19 at present. (shrink)

In the last decade, the Poincaré conjecture has probably been the most famous statement among all the contributions of Poincaré to the mathematics community. There have been many papers and books that describe various attempts and the final works of Perelman leading to a positive solution to the conjecture, but the evolution of Poincaré’s works leading to this conjecture has not been carefully discussed or described, and some other historical aspects about it have not been addressed either. For example, one (...) question is how it fits into the overall work of Poincaré in topology, and what are some other related questions that he had raised. Since Poincaré did not state the Poincaré conjecture as a conjecture but rather raised it as a question, one natural question is why he did this. In order to address these issues, in this paper, we examine Poincaré’s works in topology in the framework of classifying manifolds through numerical and algebraic invariants. Consequently, we also provide a full history of the formulation of the Poincaré conjecture which is richer than what is usually described and accepted and hence gain a better understanding of overall works of Poincaré in topology. In addition, this analysis clarifies a puzzling question on the relation between Poincaré’s stated motivations for topology and the Poincaré conjecture. (shrink)