bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Application of Virtual Reality Technology in Practical Teaching in the Police Academy -- With the Identification of Dangerous Goods as an Example
Authors: Dai Qian
Published: February 2023

Practical teaching is essential for police academy students to master the knowledge of dangerous goods (DG). There are, however, deficiencies in the traditional practical teaching of DG, such as a single teaching style, insufficient learning aids, and difficulty combining with actual combat. Students cannot consolidate their knowledge of DG more effectively using traditional instructional methods and procedures. With the advancement of virtual reality technology, its unique and distinguishing characteristics will be increasingly applied to the field of police education, thereby compensating for the shortcomings of the conventional method of teaching. This study develops a dangerous goods identification teaching system, which includes observation projects, comparison projects and case studies, based on the application of VR to the practical teaching of DG. The system has remarkable characteristics such as repeatability, practicability and safety, allowing it to realize the combination of virtual and reality, theory and practice, effectively improve the practical teaching effect of DG, and meet the demands of actual combat and modernization of police education.
The Impact of Sleep Chronotype on Psychological Well-being and its Underlying Neural Mechanisms
Authors: Ding Haiyang , Sun Qixuan , Shi Jinhong
Published: February 2023

Biological rhythms have long been a focus of the investigation, and sleep chronotype is one study area. Many studies have shown that the morning-type sleep chronotype is a protective factor for psychological well-being, while the evening-type sleep chronotype is associated with psychological distress. This paper aims to summarize and elucidate recent research on the impact of sleep chronotype on psychological well-being and to explore possible underlying mechanisms at the neural level. Finally, directions for future research are highlighted.
An Analysis of the Content-based Syllabus in Higher Education
Authors: Yue Chunxiao , Cui Xiangyu
Published: February 2023

The syllabus is considered not only a crucial component of the curriculum in an effort to introduce the course but also a potent instrument to support instructional activities [18]. Additionally, it also takes into account learners’ requirements and diverse learning situations [8], which deserves profound investigation for both pre-service and in-service English teachers [12]. Therefore, this study aims to elaborate on the way in which the content-based syllabus (CBS) can best suit the anticipated teaching context for law faculty students in a university in mainland China. This paper comprises five main parts, starting with a brief literature review pertaining to various syllabus types, which can be broadly categorized as synthetic or analytic, and product-oriented or process-oriented. After that, the chosen English teaching approach, English as a Medium of Instruction (EMI) will be explained. The author then discusses the adaptability between the chosen syllabus and students’ requirements under specific learning and teaching context, and this will be followed by several effective strategies to facilitate the implementation of the CBS. The final section will reiterate authors’ stance prior to summarizing the main argument on the significant effects of CBS on higher education. Also, the relevant limitations and implications regarding this analysis that might be useful in future research will be depicted..
Research on Teacher Ability Improvement in Higher Vocational Colleges under the background of new engineering
Authors: Dong Xiangli , Qin Zhangwei
Published: February 2023

The new engineering construction is a major strategic choice of higher education reform and innovation. In order to comprehensively promote the construction and reform of new engineering, the improvement of teachers’ core competence is the key. Teachers are the main force in the construction of new engineering. Both discipline construction and talent innovation training need a group of high-level teachers with excellent informatization vocational ability, strong ideological and political ability, high innovation and entrepreneurship ability, and strong teaching and research ability. Based on the construction of new engineering, this paper expounds the ability of teachers in higher vocational colleges and the significance of improving teachers. Through the analysis of the practical problems facing the ability improvement, explore the path of ability improvement, and promote the high-quality development of vocational education.
On the Ideological Quality Requirements of Higher Vocational College Students in the New Era from the Perspective of Overall National Overall Security
Authors: Tian Pei-pei , Zhong Juan , Liu Hui , Li Hai-yan , Wang Xiu-pan , Yang Kun
Published: February 2023

In the new era of China’s development for higher vocational college students have new quality development requirements, especially in terms of ideological quality, college students in the new era are required to have patriotic feelings and practical action, correct overall view of world development, and conscious view of global ecological environment protection. At a higher vocational college in Anhui province for two months investigation and study of the topic, through the data analysis found that some problems existing in the college students in the new era of ideological quality development: some college students of level of concern for domestic event and domestic security is not high, and the patriotic practical actions need to be further improved; Some of them have a shallow understanding of the international situation, and the ideological quality of a few college students does not meet the requirements of The times; College students have nearly for ecological environment protection is the lack of action. It puts forward the corresponding countermeasures and Suggestions: Guiding the college students pay attention to the national development, and to the right side of thinking, actively safeguard national interests; Guiding the youth to learn to distinguish right from wrong, and form a correct global vision and the soul of thought; Through the education of higher vocational college students to learn ecological security concept of national overall security, enhance their awareness of environmental protection, ecological security and the ability to consciously maintain ecological security.
Adherence to the Mediterranean Diet and Depression: A Systematic Review of Recent Studies
Authors: Liu Lillian
Published: February 2023

Depression is a leading cause of disability that affects approximately 280 million people across the globe. This systematic review intends to report the latest cohort and cross-sectional studies, randomized control trials, and meta-analysis published in the past decade that investigates the relationship between adherence to the Mediterranean Diet (MD) and risk of depression or perceived well-being. The inclusion of both observational and experimental designs from recent studies has allowed this review to synthesize the results reached from different experimental designs. This review identifies MD as a promising subject for investigation in future studies, which is necessary to determine whether components of MD work at reducing symptoms of depression singularly or in aggregate.
A Case Study of Chinese Sentiment Analysis of Social Media Reviews Based on LSTM
Authors: Wang Lukai , Wang Lei
Published: February 2023

Network public opinion analysis is obtained through a combination of natural language processing (NLP) and public opinion supervision, and is crucial for monitoring public mood and trends. Therefore, network public opinion analysis can identify and solve potential and budding social problems. This study aims to realize an analysis of Chinese sentiment in social media reviews using a long short-term memory network (LSTM) model. A dataset was obtained from Sina Weibo using a web crawler and cleaned using Pandas. First, Chinese comments regarding the legal sentencing in of Tangshan attack and Jiang Ge Case were segmented and vectorized. Thereafter, a binary LSTM model was trained and tested. Finally, sentiment analysis results were obtained by analyzing the comments with the LSTM model. The accuracy of the proposed model has reached approximately 92%.
The Impacts and Interventions of School Bullying
Authors: Wang Jiaqi
Published: February 2023

The large prevalence of school bullying and its adverse impacts have drawn strong societal interest. Abundant research has revealed that bullying victimisation and perpetration are harmful to children’s mental well-being. The negative effects could even persist in their adulthood. Hence, many school-based antibullying interventions were developed and evaluated. However, cases of school bullying are still constantly emerging nowadays. This paper aimed to delve into this issue by reviewing previous literature, describing the short-term and long-term impacts of school bullying, and evaluating anti-bullying interventions. The results demonstrated that bullying victimisation and perpetration predicted mental disorders in both childhood and adulthood. The whole-school intervention could effectively alleviate bullying victimisation, although had limited effects on reducing bullying perpetration. This paper systematically summarised key findings in the past 20 years on the topic of school bullying. The findings emphasized that the involvement of both schools and families, participation of a wide population, and specifically tailored interventions were essential to reduce bullying victimisation and perpetration.
The Digital Divide: Class and Equality Education
Authors: Zhang Xiangning
Published: February 2023

The closure of schools has left some students behind without computers or the Internet. The unfair phenomenon caused by information gap is called digital divide. This article will introduce in detail the concept of digital divide, its existence in the global context and its impact on the educational equity of young people of different classes. Finally, the article will provide some ways to narrow this difference.
Development of Urban Park Public Seating Design Strategies in the Post-pandemic Era
Authors: Zhang Ling , Perumal Velu , Li Meng , Abdul Rahman Ahmad Rizal , Yahaya Mohd Faiz , Tualeka Abdul Rohim
Published: February 2023

Urban parks have the characteristics of a relatively concentrated population. Seating as products with a high frequency of public use, they have significantly influenced residents’ activities in the epidemic environment. The current design of public seating in parks during the pandemic needs to meet the needs of different people. Thus, the purpose of this research is to meet the needs of the different populations in many aspects of urban park seating objects during the pandemic. This paper integrates literature to develop an urban park seating object strategy in the post-pandemic era. This paper analyses the design factors and design strategies of urban park seating from four aspects based on the current situation of the post-pandemic social environment. The four areas are function, aesthetics, materials, and safe social distance. The results show that the seat’s functional design is crucial. However, aesthetics, materials, and safety cannot be ignored. In addition, people are more concerned about seat safety in the post-pandemic period. Therefore, public seating design strategies for urban parks in the post-pandemic era are developed based on these four aspects.
Cultural Aesthetics of Campus Public Space Based on the Concept of Micro-regeneration: A Case Study of Culture Renewal in Shanghai Conservatory of Music
Authors: Liu Guanpeng , Qin Mengdi
Published: February 2023

In the new stage of urban development in China, the dominant way of urban regeneration has transformed from the traditional mode of radical reconstruction on massive scale to the organic renewal in gradual process on micro scale. During the practice of organic renewal, the concept of ‘micro-regeneration’ has been developed, aiming at local adjustment and micro-transformation of urban space through small-scale development and renewal, so as to realize space renovation and environment improvement. As a lightweight and practical organic renewal method, ‘micro-renewal’ has been widely discussed and applied in the practice of urban community regeneration in recent years. Campus is a special type of community, but it faces similar problems as urban communities, which is the mismatching of existing environmental quality, functions and actual use demands with the change of development stage. Especially under the construction of socialist spiritual civilization, how to improve the overall cultural atmosphere through the renewal of campus public space is an important issue. Due to the special ownership and use mode of campus space, large-scale renovation is not applicable. While, the concept of ‘micro-regeneration’ provides a possible way for the sustainable development of campus environment. This article takes the regeneration project of the Shanghai Conservatory of Music as an example, applying the theory and method of ‘micro-regeneration’ to carry out the practice of cultural construction of campus public space. In this project, in terms of space renovation, the creation of a cultural atmosphere in the campus public space was achieved through ‘small-scale’ detailed design; in terms of investment costs, the cost control of ‘micro-input’ ensured the balance between social and economic benefits; In terms of the implementation process, the precise deployment of ‘quasi-operations’ avoided the interference of large-scale construction on the daily operation of the campus. In the course of the project, multiple departments and interests were collaborated, which contributed to the whole process control of the ‘microregeneration’ of campus from planning and design, communication and negotiation to construction and operation. The research shows that the concept of ‘micro-regeneration’ provides a suitable path for the reconstruction of the campus cultural, which can realize the continuous improvement of the campus space and cultural quality under the premise of maintaining the normal operation. At the same time, under the concept of ‘micro-regeneration’, the implementation mode of small-scale, micro-investment and quasi-operation is relatively easy for the whole process management from planning to landing, which is conducive to the full realization of the vision of regeneration.
Evolutionary Game Analysis of the Participants in the Realization of Ecological Product Value
Authors: Zhou Rong , Wang Jian , Huang Zeqi
Published: February 2023

Realizing the value of ecological products is the key point to realize the integration of the dual goals of ecological civilization construction and economic development in China, and is a powerful grip for promoting industrial transformation and upgrading and implementing high-quality development tactics. In the value realization mechanism of ecological products, it is most critical to coordinate the relationship among farmers, ecological product developers and the government. Based on the systematic analysis of the game relationship among three subjects, this study constructs a game model and uses evolutionary game and numerical simulation methods to analyze the model, obtains the conditions of pure strategy selection of three subjects and the evolutionary law of mixed strategy probability combinations. This study confirms the crowding-out effect and the effectiveness of combining incentive policies such as government subsidies, fines, and required loss compensation, providing a decision reference for building an eco-product value realization system from the perspective of organizational relationship governance and policy mechanism construction.
A Comparative Study of Public Art Education by the State Theaters in Korean and China
Authors: Wang Mingjin
Published: February 2023

As a contributor to the construction of a modern public cultural service system, theaters, together with libraries, art galleries, cultural centers, etc., shoulder the social responsibility of public art education. Public art education takes public art service institutions as the carrier. At present, schools are the most popular and developed institutions among public cultural service institutions. With the advancement of socialization, public cultural and art institutions are flourishing. Funded and operated by the government, more and more public institutions bear the social responsibility of public art education in the new era and shape the diversified forms of public arts education. With National Theater of Korea and the National Theater for the Performing Arts as the objects for its research, this paper analyzes the similarities and differences between the measures for public art education in the two countries through a comparative study.
Ergodic Process of online Cultural Consumer Behaviors in China: A complement of AIINDAS model
Authors: Ju Gaoya , Lin Yi
Published: February 2023

Introduced the concept of “ergodic theory” and “cultural omnivore”, this article takes Masters In Forbidden City—a representative documentary film—as an example, analyses online cultural consumption in China and We-Media consumer behavior from cultural studies and frame analysis perspectives. By doing case study and qualitative research, this article first suggests that although derived from popular culture, online cultural consumers can not only be seen as extensions of popular culture consumers, nor unitary sub-culture groups. Youth sub-cultural groups were supposed to be differentiated and exclusive, but nowadays they are becoming increasingly “mainstreamed” due to the development of internet enterprises and cultural omnivores. Secondly, online cultural consumers have their own decision-making and information-processing system based on virtual community culture criteria. This system distinguishes internet cultural consumer behaviors from traditional offline ones. Therefore, the model of AIINDAS may be adjusted accordingly: “investigating” can be simplified into “filtrating”, “experience” can be complicated as “ergodicity”, and accurate information can be replaced by dynamic information.
Optical diagnosis of an inductively coupled plasma source for atmosphere-breathing electric propulsion system
Authors: Zheng Peng , Wu Jianjun , Zhang Yu , Zhao Yuanzheng
Published: February 2023

Atmosphere-breathing electric propulsion (ABEP) systems capture atmospheric particles for use as propellant. In the best-case scenario, such systems can undertake long-life space missions without carrying propellant from the ground. The present research mainly focuses on plasma discharge processes based on inductively coupled plasma generation from atmospheric particles in very low Earth orbit (120–250 km). The optical diagnosis is done when the N2 and O2 mixture is injected into the low-pressure discharge chamber. Numerous active groups can be identified from the emission spectra, including excited molecules, molecular ions, atoms, and excited atoms. The generation mechanism of active groups is also clarified to understand the ionization process. The variations of plasma parameters are analyzed for different ratios of N2 to O2, which can also be expanded to describe the potential behavior of ABEP systems in low Earth orbit. Note that this research is only a preliminary study and is not fully representative of the potential of ABEP systems. However, to develop ABEP systems, it is essential to understand the plasma behavior of discharge systems.
Nonadiabatic molecular dynamics investigation on charge separation in rutile TiO2/h-BN interfaces
Authors: Li Zixuan , Peng Junhao , Huang Hongfu , Dong Huafeng , Huang Le , Wen Minru , Wu Fugen
Published: February 2023

In various experimental studies, h-BN/TiO2 heterostructure greatly improves the photocatalytic capacity of TiO2. However, the actual influence of h-BN is unclear. In this work, by performing ab initio nonadiabatic molecular dynamics (NAMD) calculation, we studied the h-BN/TiO2[rutile (110)] heterostructure and found h-BN owns a strong attracting ability of the hole which makes the hole to get out of the atomic oscillation inside TiO2 in a short time (250 fs). By comparing the NAMD result of the intrinsic TiO2 (110) surface, the actual enhancement of the photocatalytic ability is found to be provided by the carrier separation h-BN brings due to the introduction of h-BN will accelerate the hole relaxation. This finding clearly illustrates the role of h-BN in the photocatalysis process in the h-BN/TiO2 heterostructure, thus better control of the TiO2 photocatalytic ability may be conducted.
Universal window size-dependent transition of correlations in complex systems
Authors: Wu Tao , An Feng , Gao Xiangyun , Liu Siyao , Sun Xiaotian , Wang Zhigang , Su Zhen , Kurths Jürgen
Published: February 2023

Correlation analysis serves as an easy-to-implement estimation approach for the quantification of the interaction or connectivity between different units. Often, pairwise correlations estimated by sliding windows are time-varying (on different window segments) and window size-dependent (on different window sizes). Still, how to choose an appropriate window size remains unclear. This paper offers a framework for studying this fundamental question by observing a critical transition from a chaotic-like state to a nonchaotic state. Specifically, given two time series and a fixed window size, we create a correlation-based series based on nonlinear correlation measurement and sliding windows as an approximation of the time-varying correlations between the original time series. We find that the varying correlations yield a state transition from a chaotic-like state to a nonchaotic state with increasing window size. This window size-dependent transition is analyzed as a universal phenomenon in both model and real-world systems (e.g., climate, financial, and neural systems). More importantly, the transition point provides a quantitative rule for the selection of window sizes. That is, the nonchaotic correlation better allows for many regression-based predictions.
Improvement of physical properties of MOS devices based on rare earth oxides
Authors: Cherif A. , Alotaibi S. , Saghrouni H. , Beji L.
Published: February 2023

We have successfully deposited a thin film of rare earth oxide on a Si substrate. After morphological characterization via a scanning electron microscope and an atomic force microscope, the electrical properties of the Al/Dy2O3/Si MOS structure were investigated using the current–voltage I(V) and capacitance–voltage C(V) measurements, as well as a study in the dynamic regime (AC) via conductance–frequency σ(f) measurements at different temperatures. Based on the classical Schottky model, we were able to determine some physical parameters, namely, the ideality factor and the potential barrier height. The effect of resistance and interface states on the current–voltage characteristics is observable and results in a deviation from the ideality factor. Then, dielectric data have been acquired by means of impedance spectroscopy over a wide frequency and temperature range. These results show that understanding the temperature dependence of the electrical characteristics of this structure may be of great help in improving the quality of Dy2O3 developed on a Si substrate for the future of device technology.
A memristive neuron and its adaptability to external electric field
Authors: Yang Feifei , Xu Ying , Ma Jun
Published: February 2023

Connecting memristors into any neural circuit can enhance its potential controllability under external physical stimuli. Memristive current along a magnetic flux-controlled memristor can estimate the effect of electromagnetic induction on neural circuits and neurons. Here, a charge-controlled memristor is incorporated into one branch circuit of a simple neural circuit to estimate the effect of an external electric field. The field energy kept in each electric component is respectively calculated, and equivalent dimensionless energy function H is obtained to discern the firing mode dependence on the energy from capacitive, inductive, and memristive channels. The electric field energy HM in a memristive channel occupies the highest proportion of Hamilton energy H, and neurons can present chaotic/periodic firing modes because of large energy injection from an external electric field, while bursting and spiking behaviors emerge when magnetic field energy HL holds maximal proportion of Hamilton energy H. The memristive current is modified to control the firing modes in this memristive neuron accompanying with a parameter shift and shape deformation resulting from energy accommodation in the memristive channel. In the presence of noisy disturbance from an external electric field, stochastic resonance is induced in the memristive neuron. Exposed to stronger electromagnetic field, the memristive component can absorb more energy and behave as a signal source for energy shunting, and negative Hamilton energy is obtained for this neuron. The new memristive neuron model can address the main physical properties of biophysical neurons, and it can further be used to explore the collective behaviors and self-organization in networks under energy flow and noisy disturbance.
Coupling between infectious diseases leads to synchronization of their dynamics
Authors: Rodríguez Jorge P. , Eguíluz Víctor M.
Published: February 2023

Interactions between different diseases may change their dynamics. Thus, these interactions represent a source of uncertainty in the modeling of empirical data when the symptoms of both infections are hard to distinguish. We recall previously proposed models of interacting infections, generalizing them to non-symmetric scenarios, showing that both cooperative and competitive interactions lead to synchronization of the maximum fraction of infected individuals in their dynamics. We exemplify this framework with a model coupling the dynamics of COVID-19 and seasonal influenza, simulating cooperation, competition, and asymmetric interactions. We find that the coupling synchronizes both infections, with a stronger influence on the dynamics of influenza.
High-precision cavity-enhanced spectroscopy for studying the H2–Ar collisions and interactions
Authors: Stolarczyk N. , Kowzan G. , Thibault F. , Cybulski H. , Słowiński M. , Tan Y. , Wang J. , Liu A.-W. , Hu S.-M. , Wcisło P.
Published: February 2023

Information about molecular collisions is encoded in the shapes of collision-perturbed molecular resonances. This connection between molecular interactions and line shapes is most clearly seen in simple systems, such as the molecular hydrogen perturbed by a noble gas atom. We study the H2–Ar system by means of highly accurate absorption spectroscopy and ab initio calculations. On the one hand, we use the cavity-ring-down-spectroscopy technique to record the shapes of the S(1) 3-0 line of molecular hydrogen perturbed by argon. On the other hand, we simulate the shapes of this line using ab initio quantum-scattering calculations performed on our accurate H2–Ar potential energy surface (PES). In order to validate the PES and the methodology of quantum-scattering calculations separately from the model of velocity-changing collisions, we measured the spectra in experimental conditions in which the influence of the latter is relatively minor. In these conditions, our theoretical collision-perturbed line shapes reproduce the raw experimental spectra at the percent level. However, the collisional shift, δ0, differs from the experimental value by 20%. Compared to other line-shape parameters, collisional shift displays much higher sensitivity to various technical aspects of the computational methodology. We identify the contributors to this large error and find the inaccuracies of the PES to be the dominant factor. With regard to the quantum scattering methodology, we demonstrate that treating the centrifugal distortion in a simple, approximate manner is sufficient to obtain the percent-level accuracy of collisional spectra.
Photodissociation study of CO2 on the formation of state-correlated CO(X1Σ+, v) with O(3P2) photoproducts in the low energy band centered at 148 nm
Authors: Liu Qian , Li Zheng , Liu Peng , Yang Wenshao , Yang Xueming , Yu Shengrui
Published: February 2023

The spin-forbidden O(3P2) + CO(X1Σ+, v) channel formed from the photodissociation of CO2 in the low energy band centered at 148 nm is investigated by using the time-sliced velocity-mapped ion imaging technique. The vibrational-resolved images of the O(3P2) photoproducts measured in the photolysis wavelength range of 144.62–150.45 nm are analyzed to give the total kinetic energy releases (TKER) spectra, CO(X1Σ+) vibrational state distributions, and anisotropy parameters (β). The TKER spectra reveal the formation of correlated CO(X1Σ+) with well resolved v = 0–10 (or 11) vibrational bands. Several high vibrational bands that were observed in the low TKER region for each studied photolysis wavelength exhibit a bimodal structure. The CO(X1Σ+, v) vibrational distributions all present inverted characteristics, and the most populated vibrational state changes from a low vibrational state to a relatively higher vibrational state with a change in the photolysis wavelength from 150.45 to 144.62 nm. However, the vibrational-state specific β-values for different photolysis wavelengths present a similar variation trend. The measured β-values show a significant bulge at the higher vibrational levels, in addition to the overall slow decreasing trend. The observed bimodal structures with mutational β-values for the high vibrational excited state CO(1Σ+) photoproducts suggest the existence of more than one nonadiabatic pathway with different anisotropies in the formation of O(3P2) + CO(X1Σ+, v) photoproducts across the low energy band.
Photoelectron spectroscopy and dissociative photoionization of fulminic acid, HCNO
Authors: Gerlach Marius , Mant Barry , Preitschopf Tobias , Karaev Emil , Mayer Dennis , Quitián-Lara Heidy M. , Hemberger Patrick , Bozek John , Worth Graham , Fischer Ingo
Published: February 2023

We report a joint experimental and computational study of the photoelectron spectroscopy and the dissociative photoionization of fulminic acid, HCNO. The molecule is of interest to astrochemistry and astrobiology as a potential precursor of prebiotic molecules. Synchrotron radiation was used as the photon source. Dispersive photoelectron spectra were recorded from 10 to 22 eV, covering four band systems in the HCNO cation, and an ionization energy of 10.83 eV was determined. Transitions into the Renner–Teller distorted X+2Π state of the cation were simulated using wavepacket dynamics based on a vibronic coupling Hamiltonian. Very good agreement between experiment and theory is obtained. While the first excited state of the cation shows only a broad and unstructured spectrum, the next two higher states exhibit a well-resolved vibrational progression. Transitions into the excited electronic states of HCNO+ were not simulated due to the large number of electronic states that contribute to these transitions. Nevertheless, a qualitative assignment is given, based on the character of the orbitals involved in the transitions. The dissociative photoionization was investigated by photoelectron–photoion coincidence spectroscopy. The breakdown diagram shows evidence for isomerization from HCNO+ to HNCO+ on the cationic potential energy surface. Zero Kelvin appearance energies for the daughter ions HCO+ and NCO+ have been derived.
Observations on the effects of non-maternal adult contact on the behavioural patterns of pre-weaned dairy heifers
Authors: Field Laura , Hemsworth Lauren M. , Jongman Ellen , Hunt Ian , Verdon Megan
Published: February 2023

Context Dairy calves are often separated from their dams following birth, despite the beneficial effects of early life adult contact on behavioural development across species. Cow–calf contact systems are rare and often difficult to implement in the modern dairy industry. The development of alternative systems offering some of the benefits of adult social contact during early life, such as contact with non-maternal adults, has been limited. Aims This study explored the behavioural patterns of grouped pre-weaned calves reared with or without non-maternal adult contact, and is the first in a series of studies following the social and behavioural development of experimental calves from the age of 2 weeks to 2 years. Methods Four groups of 10 calves housed at pasture were studied from 2 to 12 weeks of age. Two groups were housed with three non-maternal dry cows each (+S). Calf behaviour in these groups was compared with that of calves in the remaining two groups, housed without adult contact (−S). Observations were conducted on behaviours including grazing, locomotion and lying, using 5-min scan sampling between morning (0930 hours) and afternoon (1600 hours) milk-feeding on 1 day every second week of the experiment (AN22271_IE1.gif = 5.9 h of data ± 0.4 h/group.day). Key results Few behavioural differences were found between groups. All groups performed mostly lying behaviour in the middle of the day and spent the most time grazing in the afternoon before the evening milk feed. Conclusions Our results indicated that calves housed at pasture behave according to innate diurnal patterns previously observed in studies of calves housed with the dam, and choose to spend the majority of daylight hours lying or grazing. Being housed with non-maternal adults has few effects on these observed behavioural patterns. Implications Our study suggests that non-maternal adult contact does not affect the immediate behavioural development of calves housed at pasture. Future research needs to explore longitudinal effects of this contact.
Impact of the COVID-19 pandemic on Australian community health service staff’s occupational and personal lives: a longitudinal study
Authors: Holton Sara , Wynter Karen , Peeters Anna , Georgalas Alexandra , Yeomanson Ann , Rasmussen Bodil
Published: February 2023

Background Little is known about the impact of the coronavirus disease 2019 (COVID-19) pandemic on community health service staff. The aim of this study was to assess the immediate and longer-term psychosocial impacts of COVID-19 on community health service staff in Australia. Methods A prospective cohort design with an anonymous cross-sectional online survey that was administered at two time points (March–April 2021; n = 681 and September–October 2021; n = 479). Staff (clinical and non-clinical) were recruited from eight community health services in Victoria, Australia. Study-specific questions evaluated the impact of COVID-19 on respondents’ work and personal lives. Space was provided at the end of the surveys for free-text comments. Results There were no significant differences in respondent characteristics between the two surveys. At both survey time points, respondents were mostly concerned about their family’s health. Compared to the first survey, survey two respondents were significantly more likely to report concerns about infecting family members (48.8% vs 41.6%, P = 0.029), clients having COVID-19 (43.2% vs 36.2%, P = 0.035), getting COVID-19 at work (53.7% vs 45.6%, P = 0.014), not being prepared to care for clients with COVID-19 (27.5% vs 18.8%, P = 0.006) and feeling more stress at work (63.7% vs 50.8%, P < 0.001). A significantly greater proportion of respondents indicated they were considering transitioning into another sector at the time of the second survey compared to the first (24.8% vs 18.7%, P = 0.026). Conclusions The COVID-19 pandemic has had a considerable impact on the work and personal lives of community health service staff. Staff would benefit from continued and targeted initiatives that address their wellbeing and concerns.
Effects of the addition of insulin–transferrin–selenium (ITS) and/or metformin to the
Authors: Luchetti Carolina Griselda , Lorenzo María Soledad , Elia Evelin Mariel , Teplitz Gabriela Maia , Cruzans Paula Romina , Carou María Clara , Lombardo Daniel Marcelo
Published: February 2023

Context One of the main problems of porcine in vitro maturation (IVM) is incomplete cytoplasmatic maturation. Nuclear and cytoplasmic maturation will determine the future success of fertilisation and embryo development. Insulin–transferrin–selenium (ITS) has insulin-like and antioxidant effects, and metformin (M) is an insulin-sensitiser and antioxidant drug. Aims To assess the effects of adding ITS and/or M in porcine IVM media on cytoplasmic maturation and early embryo development. Methods Cumulus-oocyte complexes (COC) were IVM with M (10−4M), ITS (0.1% v/v), M + ITS or no adding (Control). Key results ITS increased glucose consumption compared to Control and M (P < 0.01), and M + ITS did not differ from ITS or Control. Redox balance: M, ITS and M + ITS increased glutathione (P < 0.01) and decreased lipid peroxidation (P < 0.005). The viability of cumulus cells by flow cytometry increased with M (P < 0.005) and decreased with ITS (P < 0.001); M + ITS did not differ from Control. After IVF, M increased penetration and decreased male pronucleus (P < 0.05). Embryo development: cleavage increased with M (P < 0.05), and blastocysts increased with ITS and M + ITS (P < 0.05). The number of blastocyst cells increased with ITS (P < 0.05). Conclusions Adding ITS and M + ITS to porcine IVM media benefits embryo development to blastocysts, but ITS alone has better effects than M + ITS. Implications ITS is an excellent tool to improve IVM and embryo development after IVF in pigs.
Dislocation theory of steady and transient creep of crystalline solids: Predictions for olivine
Authors: Breithaupt Thomas , Katz Richard F. , Hansen Lars N. , Kumamoto Kathryn M.
Published: February 2023

In applications critical to the geological, materials, and engineering sciences, deformation occurs at strain rates too small to be accessible experimentally. Instead, extrapolations of empirical relationships are used, leading to epistemic uncertainties in predictions. To address these problems, we construct a theory of the fundamental processes affecting dislocations: storage and recovery. We then validate our theory for olivine deformation. This model explains the empirical relationships among strain rate, applied stress, and dislocation density in disparate laboratory regimes. It predicts the previously unexplained dependence of dislocation density on applied stress in olivine. The predictions of our model for Earth conditions differ from extrapolated empirical relationships. For example, it predicts rapid, transient deformation in the upper mantle, consistent with recent measurements of postseismic creep.
Time of day determines postexercise metabolism in mouse adipose tissue
Authors: Pendergrast Logan A. , Lundell Leonidas S. , Ehrlich Amy M. , Ashcroft Stephen P. , Schönke Milena , Basse Astrid L. , Krook Anna , Treebak Jonas T. , Dollet Lucile , Zierath Juleen R.
Published: February 2023

The circadian clock is a cell-autonomous transcription–translation feedback mechanism that anticipates and adapts physiology and behavior to different phases of the day. A variety of factors including hormones, temperature, food-intake, and exercise can act on tissue-specific peripheral clocks to alter the expression of genes that influence metabolism, all in a time-of-day dependent manner. The aim of this study was to elucidate the effects of exercise timing on adipose tissue metabolism. We performed RNA sequencing on inguinal adipose tissue of mice immediately following maximal exercise or sham treatment at the early rest or early active phase. Only during the early active phase did exercise elicit an immediate increase in serum nonesterified fatty acids. Furthermore, early active phase exercise increased expression of markers of thermogenesis and mitochondrial proliferation in inguinal adipose tissue. In vitro, synchronized 3T3-L1 adipocytes showed a timing-dependent difference in
Adrb2
expression, as well as a greater lipolytic activity. Thus, the response of adipose tissue to exercise is time-of-day sensitive and may be partly driven by the circadian clock. To determine the influence of feeding state on the time-of-day response to exercise, we replicated the experiment in 10-h-fasted early rest phase mice to mimic the early active phase metabolic status. A 10-h fast led to a similar lipolytic response as observed after active phase exercise but did not replicate the transcriptomic response, suggesting that the observed changes in gene expression are not driven by feeding status. In conclusion, acute exercise elicits timing-specific effects on adipose tissue to maintain metabolic homeostasis.
General Phraseology
Authors: Mel’čuk Igor
Published: February 2023

This book presents a 100% novel approach to phraseology: A language-universal deductive calculus of all theoretically possible phraseological expressions (= phrasemes) is proposed, implemented in 51 rigorously defined notions. Nine major classes of phrasemes are established and illustrated: lexemic idioms (shoot the breeze), lexemic collocations (pay a visit; helicopter parents), lexemic nominemes (the Northern Palmyra) and lexemic clichés (What’s your name?; to put it differently); morphemic idioms (forget), morphemic collocations (Londoner ~ Muscovite), morphemic nominemes (Greenland) and morphemic clichés (antidepressant); and syntactic idioms (Her be late?!?). An additional class of pragmatically constrained lexemic expressions is described: pragmatemes (No parking; At attention!; Roger.). Each phraseme class is supplied with precise methodology for a lexicographic description; a number of lexical entries for representatives of all classes are given. The language data come from English and Russian. General Phraseology: Theory and Practice is meant as a contribution towards the elaboration of a unified notional system for linguistics.
A new multichannel deep adaptive adversarial network for cross-domain fault diagnosis
Authors: Han Baokun , Xing Shuo , Wang Jinrui , Zhang Zongzhen , Bao Huaiqian , Zhang Xiao , Jiang Xingwang , Liu Zongling , Yang Zujie , Ma Hao
Published: February 2023

Currently, most fault diagnosis methods can achieve desired results from a single signal source. However, a single sensor signal has limited features and adaptability to the working environment, which will greatly affect the diagnosis results. To overcome this weakness, a multichannel deep adaptive adversarial network (MCDAAN) based on fusing acoustic and vibration signals is proposed in this paper. The training process of MCDAAN primarily includes the following aspects. First, the acoustic and vibration signals extracted by the neural network feature extraction are fused after being adjusted by the convolutional block attention module in channel and spatial dimensions. Next, the fusion features of the source and target domains are measured by the Wasserstein distance. Finally, the fused features are classified by the label and domain classifiers. The proposed MCDAAN is tested using acoustic and vibration signals collected at ten transfer tasks. The results demonstrate that the diagnostic accuracy of the proposed MCDAAN can reach more than 99% in both groups of experiments. MCDAAN can accurately classify all kinds of fault samples, and the classification accuracy is superior to other comparison methods.
Research on the stability characteristics of a drum-type screen drive device for nuclear power plants
Authors: Sun Guangbin , Che Yinhui , Liu Yanzhuang
Published: February 2023

This paper uses the finite element calculation software ABAQUS to research the stability characteristics of the drum-type screen drive under normal operating conditions. Through the simulation calculation of the dynamics of the reducer system, earthquake load and motor gravity, the results show that the drum-type screen drive secondary reduction worm gear drive components are subjected to the maximum stress, and the maximum stress occurs at the intersection of the worm and gear; the maximum deformation under the earthquake load occurs at the two low-speed motor sides, and the maximum displacement is 0.929mm.
Performance investigation of supercritical carbon dioxide power cycle with recuperative recompression technology
Authors: Huang Renlong , Chen Chaoda , Wang Yage , Zhong Tianming
Published: February 2023

The supercritical carbon dioxide power cycle is an advanced thermoelectric conversion technology due to its high-power generation efficiency and compact structure. However, basic supercritical carbon dioxide power cycle performance is limited to turbine outlet temperature. To further improve thermoelectric conversion efficiency, recuperative recompression in the supercritical carbon dioxide power cycle is investigated for efficient energy utilization. Recuperative technology can reduce the amount of heat released to the environment, and recompression can reduce Compression power consumption. A thermodynamic model of recuperative recompression in a supercritical carbon power cycle system is built in this paper, and the system’s performance is investigated. The result reveals that the recuperative recompression in the supercritical carbon power cycle system has greater performance promotion potential than the basic supercritical carbon power cycle system.
Analysis of Influencing Factors on Electric Field Distribution of 500 kV Porcelain Insulators
Authors: Dong Kai , Shen Qingbin , Dong Yanwu , Lu Ziqiang , Li Jie , Wang Guanjian
Published: February 2023

With the upsurge of the digital twin power grid, it is very necessary to carry out a three-dimensional model and simulation analysis of the power grid system. Insulators are one of the important components in the power system, and the appropriate simplification of the simulation model is of great significance. In this paper, the finite element software is used to calculate the three-dimensional model, and the influence of the length of the conductor, the tower, the yoke plate, the grading ring, and the arrangement of the insulators on the axial electric field distribution (EFD) is analyzed. The results show that: the length of the conductor will affect the uniformity of the axial electric field; compared with the grading ring, the yoke plate will cause serious distortion of the electric field intensity curve; the integrity of the tower has different effects; the arrangement of the insulators will affect the magnitude of the electric field and even the shape of the curve. Therefore, in the simulation analysis of the axial electric field, the above factors should be considered when simplifying the insulator model, which will promote the development of relevant digital twin technology.
Research on the application of air source heat pump and biomass boiler combined heating systems in northern new rural communities.
Authors: Sun Wanxue , Wei Na , Cai Shengchuan
Published: February 2023

In today’s society, the country is vigorously promoting clean energy heating to replace coal heating with high carbon emissions. In recent years, with the rapid development of new rural communities and abundant biomass resources in rural areas, biomass boiler heating can save energy and reduce energy consumption. However, the heating efficiency of a single biomass boiler is low. The air source heat pump and biomass boiler are combined to form a combined heating system, which has higher heating efficiency and better energy-saving effect compared with separate air source heat pump heating equipment and separate biomass boiler system. In addition, air source heat pumps and biomass boilers are both clean heating methods, which can better promote the clean heating of new rural communities in China.