bluuebunny/crossref_metadata_2025 huggingface dataset:
The Coupling evaluation model of Marine Industrial Structure and Scientific and Technological Innovation in Shandong Province
Authors: Lv Zuoliang , Zhou Jiaxin
Published: February 2021

The relationships between marine industrial structure and technological innovation are mutual influence and interdependence. Their coordinated development plays an important role in the transformation of China’s marine economy. By constructing a comprehensive index evaluation system of marine industrial structure and technological innovation, the coupled coordination model is applied to the marine industrial structure and technological innovation of Shandong Province. This paper measures the coupled development status of these, quantitatively evaluate the current status of their collaborative development, and propose corresponding countermeasures.
A Study on “Kashgar City Circle” Industry Development in the Contest of the Silk Road Economic Belt
Authors: Jie Pan , Xiao Bai
Published: February 2021

Kashgar City Circle is an important node of the new The Silk Road economic belt.Kashgar City Circle will serve as a new economic growth pole in the western region and will promote the rapid development of regional economy.The development of industry is an important driving force for regional economic development.This paper analyzes the four indicators of total output value, output value growth rate, employed population and labor productivity of the 18 industrial sectors of Kashgar City Circle from 2012 to 2016.Combined with the opportunities brought by the Silk Road economic belt background to the development of the Kashgar City Circle industry, this paper puts forward the current policy recommendations for the development of the Kashgar City Circle industry.
Cross-Regional Connectedness in the United States’ Housing Market
Authors: Yin Wen
Published: February 2021

The interconnectedness of markets is a useful measure of risk and therefore an indicator of economic stability. In this paper, the interconnectedness among housing markets in different metropolitan areas was analyzed. Interconnectedness between the housing market and other markets were also calculated. In regional studies, West Coast housing markets were found to be the most influential on housing markets elsewhere. Interestingly, overall connectedness across regions steadily increased prior to the subprime mortgage crisis, representing a systematic risk increase. When analyzing diverse markets in relation to the housing market, the stock market was found to have the highest interconnectedness, suggesting that financial health of stock market depend on financial health of housing market. The increased systematic risk due to high housing market interconnectedness coupled with the interdependence between the stock market and the housing market were key indicators of the subprime mortgage crisis. Such measures should be monitored in the future to avoid a similar economic disaster.
Characteristics and trend analysis of Chinese tourism academic research Based on CNKI (1992-2018) bibliometric analysis
Authors: Yang Lihui , Li Linshan
Published: February 2021

Based on the retrieval of journals published on CNKI in the field of tourism, and the statistical analysis by Cite Space, this paper finds that: (1) in terms of the number of published papers, tourism research can be divided into three stages: infancy period in 1992-2000; Steady growth period in 2001-2011 years; Rapid decline period in 2012-2018 years. (2) The key institutions of tourism research are institutions of higher learning, among which Shaanxi Normal University and Zhongshan University have obvious institutional competitiveness. (3) Through the co-occurrence analysis of core authors and key words, eight core author groups and corresponding research fields can be divided. (4) The research direction of tourism mainly focuses on tourism industry, tourism resources, tourism development, tourist, the Belt and Road cultural tourism, rural tourism and city tourism. The future research will focus on the research direction of “big data”, “the Belt and Road tourism”, “poverty alleviation”, “global tourism” and “Rural Revitalization”.
Examining How Brand Co-Creation and Virtual Brand Community Affect Brand Commitment
Authors: Lu Weijian , Han Yu , Chen Shiyu
Published: February 2021

The significance of brand co-creation in virtual brand communities has been recognized in academia and practice. The existing literature has investigated the impact of customer participation in virtual brand community on brand performance and its mechanism, but the prospective impact of types of virtual brand community on types of brand commitment is not examined. Based on the survey of 229 members in virtual brand communities of two popular games of Tencent, this research empirically examines how different types of brand co-creation and virtual brand communities influence brand commitment. This research confirms that customers participating in autonomous brand co-creation in the autonomous virtual brand community have a significantly higher degree of brand experience, and those who participate in both sponsored and autonomous virtual brand community have a comparatively lower degree of brand experience. Meanwhile, sub-brand brand commitment plays the role of mediator between brand experience and corporate brand commitment. Theoretical and managerial implications are offered with limitations and future research.
Human resource management in multinational companies—— from the perspective of Hilton Hotels
Authors: Ma Rui
Published: February 2021

Under the background of globalization, multinational companies not only quantity increased obviously, but also plays a more and more important role in the world. In different cultural environments, it is very important for multinational companies to use human resource management effectively to promote their operation. By analyzing the current situation of human resource management of Hilton Hotels, this paper explored the universal management experience, hoping to provide reference for the development of China’s multinational hotels.
Research on the Selection Model of Medium and Long-term Incentive Modes for State-controlled Listed Companies
Authors: Wang Han , Xu Yunfei
Published: February 2021

With the continuous improvement of the governance mechanism of state-controlled listed companies, more and more companies are beginning to try to transform them into medium and long-term incentives to stimulate the vitality of talents. This section compares and analyzes the medium and longterm incentive methods applicable to state-controlled listed companies, and summarizes the characteristics, advantages and disadvantages of different incentive methods. It provides an effective reference for conventional holding listed companies to choose an incentive method suitable for company development and employee needs.
Research on Innovative Computing of Community Governance Capacity in Xiacheng District of Hangzhou
Authors: Li Qiang , Liu Kejin
Published: February 2021

Deepening the reform of the cultural system and promoting the all-round prosperity of cultural undertakings and the rapid development of the cultural industry are vital to the realization of the goal of building a moderately prosperous society in an all-round way, to the overall layout of the cause of socialism with Chinese characteristics, and to the great rejuvenation of the Chinese nation. Public cultural services refer to the public cultural facilities, cultural products, cultural activities and other related services provided by the government with the participation of social forces for the main purpose of meeting the basic cultural needs of citizens. Hangzhou Xiacheng District is the first community public cultural service performance evaluation mechanism in China, which provides a sample for modern public cultural services in urban communities across the country, and also provides exemplary experience for promoting the modernization of community governance system and governance capacity. This study uses innovative evaluation methods to make an empirical analysis of community governance capacity in Xiacheng District of Hangzhou, and tries to find the reasonable calculation method
The impact of the implementation of the financial shared service model on Haier Smart Home
Authors: Yani Zhuang
Published: February 2021

With the development of economic globalization, companies continue to expand through mergers, and problems such as low operating efficiency and increased management costs have begun to emerge. Traditional financial management models have been difficult to adapt to the development of enterprises. Therefore, in order to operate branches more efficiently and improve operational efficiency, enterprises have begun to vigorously develop financial shared service models. This article analyzes the impact of Haier Smart Home after the implementation of the financial shared service model, and explains the necessity of implementing the financial shared service model, hoping to attract more large enterprise groups to build a financial shared service model.
A Study on Evaluation on Innovation Efficiency of Advanced Manufacturing in China
Authors: Yang Shuili , Li Lei
Published: February 2021

A comprehensive evaluation was conducted on the innovation efficiency of advanced manufacturing in China from 2015 to 2017 with BCC model and super efficiency analysis and based on the data from 184 A-share listed advanced manufacturing companies. The results indicate that the total innovation efficiency, pure technical efficiency and scale efficiency of the advanced manufacturing in China are increasing year by year, especially the scale efficiency increases the most significantly; however, the advanced manufacturing is still at a relatively lower level and shows an unbalanced and insufficient development as a whole. In addition, the total innovation efficiency of 14 sub-sectors of the advanced manufacturing is increasing year by year.
The Impact of Paternalistic Leadership on Organization Identification: A Moderated Mediation Model
Authors: Qiu Lin
Published: February 2021

The purpose of this study is to investigate how the two components of paternalistic leadership, namely authoritarianism and benevolence, jointly influence employee organization identification. Using a sample of 182 full-time employees China, this study found that benevolent climate mediated the positive relationship between benevolent leadership and employee organizational identification, and authoritarian leadership moderated the direct effect of benevolent leadership on benevolent climate and the indirect effect of benevolent leadership on organizational identification via benevolent climate. That is, when benevolent leaders simultaneously exhibit authoritarianism, they are more likely to promote perception of benevolent climate among employees who are then more likely to identify with the organization.
To explore the mystery of the idiosyncratic volatility of the A-share market
Authors: Ran Zhuoling , Huang Xuehao , Xie Mingjia
Published: February 2021

Return and risk are inevitable topics in financial research. This paper explores the relationship between IVOL (idiosyncratic volatility) and cross-sectional return (risk premium and excess return) of the Chinese A-share market. With the monthly data of 237 months from January 2001 to September 2019 of Ashare of Shanghai and Shenzhen stock exchange, IVOL of each stock by the regressions is conducted through rolling window based on the four factors model of Carhart. Whether there is a significant positive or negative relationship between the IVOL and the cross-sectional return of the stock by combination analysis and crosssection regression are tested in the paper. The research shows that, after excluding the influence of financial crisis and stock disaster, from January 2001 to September 2019, there is a significant positive relationship between the special volatility and cross-sectional return in Chinese A-share market under normal market conditions, and there is no so-called “mystery of the special volatility”.
Analysis on Marketing Strategies of Tencent Games—Take Honor of Kings as an Example
Authors: Shen Dantong
Published: February 2021

This paper mainly focuses on the marketing strategies of Tencent Games. Tencent Games has the largest revenue all over the world. It is considered that the effective marketing strategies play important roles in global competition. Many researches have been focusing on this topic. In this article, strategies are summarized into four main points: product marketing, entertainment marketing, cross-border cooperation and intellectual property creation. Then the author conducts out a deep case study of Honor of Kings, introducing the most striking and latest strategies of the game. The game has cross-border cooperation with a cosmetics brand, idolizes the in-game characters and gets hold of festivals to launch virtual products. The experience of Tencent Games indicates that different strategies fit different periods and the developer should listen to the users and follow the trend.
Intelligent Collaborative System Planning Of “City Cluster + Airport Group” In GBA
Authors: Wang Tian , Lin Jianbang
Published: February 2021

In February 2019, the Chinese government issued the outline of development planning for Guangdong-Hongkong-Macao Greater Bay Area (GBA), which required all departments in all regions to implement it in combination with the actual situation. The implementation of the “one belt and one way” strategy is inseparable from Guangdong with special geographical location and special development orientation. The rapid development of Guangdong relies heavily on the coordinated development of “city cluster + airport group” in GBA. “City cluster + airport group” in GBA will serve as the two centers, and cooperate with each other to carry out the intelligent coordinated development of different industries and the same industries around the two centers.
A Case Study on Rural E-commerce of selenium-rich Tea in Ziyang County
Authors: Sun Junna , Lei Hongzhen
Published: February 2021

Ziyang County of Ankang city is one of the poor counties in Shaanxi Province. Due to the remote location and inconvenient transportation, it has not been able to remove the hat of the poor county. The birth of e-commerce has provided Ziyang County that can be have a concrete and feasible path of the development for poverty alleviation. On the one hand, e-commerce poverty alleviation has its unique significance and advantages. On the other hand, e-commerce development is limited by specific conditions and resources, so there are many difficulties in the development process. Taking the e-commerce development of selenium-rich tea in Ziyang County as an example, the problems encountered by e-commerce in the development of poor areas are hoped to find out in this paper, and then countermeasures are provided to solve the problems.
Research on the Fusion Mechanism of Innovation Chain and Fund Chain in Strategic Emerging Industries
Authors: Fu Siqi , Wang Yudong
Published: February 2021

In order to achieve the fusion of innovation chain and fund chain in strategic emerging industries, improve industrial innovation performance, and realize capital appreciation, based on the connotation and structural characteristics of the two chains, this research analyzes and summarizes the fusion mechanism from three aspects, including the elements, the process of fusion as well as the law of evolution. After research, it is found that the fusion of the innovation chain and fund chain is to integrate on the basis of synergy, then, deepen the synergy and form a spiral system. Lastly, from the point of view of fusion elements, a strategy which can promote the incorporation of the two chains is proposed. This research can be regarded as a reference for the fusion development of the innovation chain and fund chain in strategic emerging industries.
Research on the Integration Development Mode of China’s Media Industry and Capital Market
Authors: Miao Yutong
Published: February 2021

With the rapid development of Internet and digital technology, China’s media industry has been developing rapidly in this context, but at the same time, it also exposed some practical problems such as the shortage of funds. The effective integration with the capital market is the future development trend. Therefore, this paper establishes the research on the integration development mode of China’s media industry and capital market. This paper makes an in-depth study on the current media industry and capital market. Through this study, it is believed that the current media industry in China has reached the bottleneck of development, and the shortage of funds has restricted the sustainable development of enterprises. The capital market is also optimistic about the market prospect of media industry, but it is subject to the current open policy and market environment. In view of this situation, this paper analyzes the structure of the media industry and the main forms of the extra industry capital entering the media industry. It is believed that the biggest reason for the media industry’s demand for capital comes from the fact that many media enterprises have changed from the original public institutions into self-financing enterprises without the financial support of the government. In this paper, combined with the main characteristics of China’s media industry, as well as the current capital market environment, integrated with advanced financial management concepts, put forward the development of media financing mode with Chinese characteristics, which makes up for the shortcomings of the current media financing mode.
Analysis on the Trust Game in Second-hand Transection
Authors: Cui Yuchen
Published: February 2021

In modern society, every one of us is fully aware that trust and credit are the substantial principle that we must own to build up our relationship, networking or individual development from beginning of birth to end of journey. Thus, trust and credit are undoubted basis for our social composition, especially at current stage, where e-commerce or e-trade mode change our traditional way of life significantly. One interesting thing we are witnessing is that, more and more popularity of the online second-hand product market, so how to understand trust game theory properly, with follow-up the rule to implement in this market, is essentially important for both of the buyer and the seller. Herein this article, some real cases’ studies from China second hand market will help reader for this purpose illustration. This study contains much of the current study and discoveries of trust game and second-hand transaction market in China. Based on the previous knowledge, the suggestions for both consumers and the second-hand market producers are given.
Research on the Prediction Method of Stock Price Based on RBF Neural Network Optimization Algorithm
Authors: Li Hongzheng , Huang Shaohang
Published: February 2021

With the development of social economy, people pay more and more attention to investment and financial management. However, due to the strong volatility of the stock market, it is difficult to accurately predict the future trend of stock and the investment risk is very high. This paper proposes an optimization algorithm based on RBF neural network to predict the stock price. On the basis of RBF neural network, K-means clustering algorithm is introduced to optimize the network parameters, improve the training speed and prediction accuracy of the algorithm, and set corresponding evaluation indexes to evaluate the performance of the algorithm. The method proposed in this paper is applied to the stock prediction of stock market, and the closing price of several stocks in a period of time is predicted. The experimental results show that the method proposed in this paper has better prediction accuracy than other methods, and it is practical in the field of stock prediction.
Mechanical strength characterization and modeling of hydroxyapatite/tricalcium phosphate biocomposite using the diametral-compression test
Authors: Es-Saddik Mohammed , Laasri Said , Laghzizil Abdelaziz , Nunzi Jean-Michel , Taha Mohammed , Guidara Awatef , Hajjaji Abdelwahed , Bouaziz Jamel
Published: February 2021

This study reports the enhanced mechanical resistance of the composite bioceramics of hydroxyapatite (HAP) and tricalcium phosphate (β-TCP) used as bone substitute. HAP/β-TCP mixture was prepared by wet mixing of powders and characterized. Effects of powder manufacturing and sintering temperature on the densification, microstructure and mechanical properties of the composite were studied. The rupture strength (σr) was calculated using the Brazilian test. At 1250 °C, the relative density and mechanical strength of the HAP/β-TCP ceramics reached the maximum value of 89% and 43 MPa, respectively. Experimental results were modeled by the finite element method to determine the stress distribution in the compacted disc.
Génie civil : le nucléaire au cœur de l’innovation
Authors: Le Gros Gaïc
Published: February 2021

Depuis sa création, l’industrie nucléaire contribue à l’innovation dans le domaine du génie civil. Partageant de nombreuses problématiques avec les autres industries nationales et forte de sa culture de sûreté, la filière a été et demeure un acteur majeur de l’innovation dans le domaine des structures et des matériaux.
The Evolution of Economic Activity in the Rural Area of Region 2 South - East
Authors: Balasan Daniela – Lavinia , Buhociu Dragoş Horia
Published: February 2021

When we talk about economic development, we can refer to improve the standard of living and the prosperity of the population. This is due by increasing per capita income. In order to analyze economic activity, severe indicators must be studied, namely productivity, economic growth rate, labour force share, gross domestic product.

In order to carry out as accurate an analysis as possible, it is required to discover the bottlenecks and problems that Region 2 South East makes and to develop a set of reservations and indications leading to the reduction and, why not, the removal of negative aspects.

The main purpose of this work is to achieve a strategic plan by studying the current state and the impact of the economic system in recent times in all its forms, with a view to the development of the countryside of Region 2 South – East.

I set out to create a website based on the advice of small rural entrepreneurs that evolves gathering information in realistically identifying all the strengths and concentrating them in the region’s potential innovation.
Empirical Study on the Perception of Organized Crime in Romania
Authors: Dănciulescu Laurenţiu-Andrei
Published: February 2021

The forms of manifestation of organized crime are threats that affect any society, the most vulnerable being the democracies in the process of formation. Concerning national security is the strategic context in which these non-traditional threats take place [1]. Internally, the new democracies are facing a series of changes: the transition from a totalitarian regime to a democratic regime, from a centralized economy to a market economy. Most strategic documents drawn up and adopted in developed countries to prevent and combat crime have as a priority the fulfillment of four major objectives: anticipation, prevention, deterrence and response. The aim of the paper is to develop methods for investigating organized crime, in order to develop effective strategies for preventing and combating related crimes. The information was collected between September 2019 and November 2019, being analyzed, processed and interpreted afterwards.
The frequency of buying cured meat products in the context of consumers’ store choices
Authors: Grubor Aleksandar , Milicevic Nikola , Djokic Nenad
Published: February 2021

Research background: In the sector of cured meat production and sale, companies are struggling to attract as many consumers as possible. Because of this, special attention should be dedicated to the examination of consumer behavior towards cured meat products. In relation to this, there are studies, including different types of factors, such as geographic, economic and socio-demographic. In this paper, consumer behavior regarding cured meat products was investigated from the aspect of consumers’ store choices.

Purpose of the article: The paper examines the frequency of buying cured meat products on a monthly basis, taking into account factors that influence consumers store choices. Based on the buying frequency, all respondents have been divided into low, medium and high frequency segments, which were compared in relation to store choosing factors.

Methods: The research was conducted on a sample that included 449 respondents from the city of Novi Sad. They were interviewed in 2019, by the use of a specially designed questionnaire. For processing the data, one way ANOVA and Tukey post-hoc test were implemented.

Findings & Value added: The obtained results have shown that the largest percent of respondents – nearly 60% - belong to medium frequency segment, followed by high frequency segment (about one third of respondents) and low frequency segment (less than 10%). The closeness to place of living, appropriate working hours, wide assortment, quality of products and favorable prices belong to the top 5 most influential factors in each of the segments. These findings can be used by manufacturers and retailers when making decisions regarding production and marketing activities.
Case study on the impact of online schooling in a rural area during the emergency state (March-June 2019-2020 school year, Romania)
Authors: Grigore-Filip (şerban) Mariana Viorela
Published: February 2021

The spread of the Corona virus has brought about major changes in the world. Even before, this technology was an important presence in practically every sphere of our daily routine. There is a widespread assumption that the population existing in the rural areas is hesitant towards accustoming to modernization. This paper is an inquiry constructed on the base of a questionnaire designed to determine the standpoint of the parents having children enrolled at primary level school in relation to the compulsory new ICT tools at school and at home, the difficulties and their awareness of the array of possibilities offered by communication science. The research was conducted at the end of June 2021 and it focuses on the period from March to June (2019-2020 school year) when all schools in Romania were performing online classes. The pupils comprised in this respective case study attend „Oborani Elementary school (I-IV)”, a rural school with pupils from the preparatory level to the fourth grade from Vişina Village in Dâmboviţa country, Romanina.
Spine Examination during COVID-19 Pandemic via Video Consultation
Authors: Jansen Tom , Gathen Martin , Touet Amadeo , Goost Hans , Wirtz Dieter Christian , Burger Christof , Pflugmacher Robert , Welle Kristian , Kabir Koroush
Published: February 2021

Introduction During the current COVID-19 pandemic video consultations are increasingly common in order to minimize the risk of infection for staff and patients. The aim of this study was to evaluate the feasibility of a spine examination via video.

Methods A total of 43 patients were recruited. Each participant underwent a video-based (VB) and a conventional face-to-face (FTF) spine examination. Pain intensity, active range of motion, inspection, a neurophysiologic basic exam and provocations tests were evaluated using video-based and face-to-face methods.

Results The intra-rater reliability (IRR) was measured between both examinations. Good to very good IRR values were obtained in inspection (Kappa between 0,752 und 0,944), active range of motion and basic neurophysiological examination (Kappa between 0,659 und 0,969). Only moderate matches were found in specific provocation tests (Kappa between 0,407 und 0,938). A video-based spine examination is a reliable tool for measuring pain intensity, active range of motion and a basic neurophysiologic exam.

Conclusion A basic spine examination during a video consultation is possible. A good agreement of the test results between video-based and face-to-face examination could be found.
Digenic Inheritance in Juvenile Open-Angle Glaucoma
Authors: Somarajan Bindu I. , Gupta Shikha , Mahalingam Karthikeyan , Azmira Kishan , Gupta Viney
Published: February 2021

Juvenile open-angle glaucoma (JOAG) is an uncommon subset of primary glaucoma with an onset before the age of 40 years. In this case report, we describe the cosegregation of MYOC, p.Pro370Leu and LTBP2, p.Pro432Leu mutations in a family with JOAG. The family with autosomal dominant JOAG belonged to Northern India. The samples of proband and her parents were evaluated by whole exome sequencing. Sanger sequencing was conducted in all the study participants to check the mutations identified. Both MYOC and LTBP2 mutations were found to cosegregate in affected individuals leading to a severe JOAG phenotype, thereby suggesting a digenic inheritance of MYOC with LTBP2 in this family.
Effects of the current land tenure on augmenting household farmland access in South East Ethiopia
Authors: Leta Teshome Beyene , Berlie Arega Bazezew , Ferede Mehrete Belay
Published: February 2021

According to the current land policy of Ethiopia, rural households are legally allowed to access agricultural lands. Nonetheless, the difficulty of rural population in accessing farmlands makes controversial authenticity of this land tenure to solve problems of household farmland access. This study aimed at assessing the effects of the current land tenure on augmenting household farmland access in Ethiopia. The study followed a mixed-methods research design to investigate the variables in the study. Thus, data were collected through a survey questionnaire, focus group discussion and interviews between May and June 2019. For data analysis, both descriptive and inferential statistics methods were employed. Consequently, study results indicated that the mean farmland size per household was 1.59 ha and government land allocation accounted for 41.9%. The farmland accesses of households headed by persons below 35 years were 13% and that of all female-headed households was 23.2%. It also showed that there were illegal farmland accesses via furtive farmland purchasing. On top of this, 63% of respondents perceived that the current land tenure was not a good rule. The regression analysis showed that the number of oxen, total crop production; annual income, education, and credit access were determinants of household farmland size. In conclusion, farmland scare areas in Ethiopia like Arsi zone have problems of deficient government land allocation, as well as unforeseen illicit farmland transactions. Given augmenting household farmland access, the study recommended that female-headed households have to be empowered and younger-headed households should be encouraged to enhancing their farmland accesses. The farming community should affirm to legal land regulations for maintaining their tenure arrangements. The local government should work according to land rules to liquidate illicit land markets. The national government should mitigate imbalanced farmland access by enforcing land rule acts such as land redistribution and reallocation with the consultation of the people. All level governments should strictly control alarming illegal changes of farmlands to urban areas by illicit land transactions.
A multivariate approach to assess the structural determinants of large wildfires: evidence from a Mediterranean country
Authors: Sousa David , Cruz-Jesus Frederico , Sousa André , Painho Marco
Published: February 2021

This paper analyses the factors behind wildfire propagation in a Mediterranean European country, Portugal, using a set of variables related to vegetation and climatic, topography and human aspects. Spatial cluster analysis was used to find homogeneous regions, and two-part regression models were used to model the contribution of the different elements driving extensive fire propagation. Our findings confirm the presence of spatial variability in the contribution exerted by most structural factors driving large wildfire spread. Additionally, the results of this study show that vegetation types, in particular the presence of shrubs, and a lack of human activities, such as agriculture, represent the main factors facilitating fire spread in this region, corroborating information from previous work. This research provides relevant input for implementation in different fields, from large fire awareness and prevention to the development of wildfire policies, as well as addressing methodological concerns in fire danger and fire risk analyses.
Emotion matters
Authors: Levy Rachel S. , Kelly Spencer D.
Published: February 2021

Recent theories and neural models of co-speech gesture have extensively considered its cognitive role in language comprehension but have ignored the emotional function. We investigated the integration of speech and co-speech gestures in memory for verbal information with different emotional connotations (either positive, negative, or neutral). In a surprise cued-recall task, gesture boosted memory for speech with all three emotional valences. Interestingly, gesture was more likely to become integrated into memory of neutrally and positively valenced speech than negatively valenced speech. The results suggest that gesture-speech integration is modulated by emotional valence of speech, which has implications for the emotional function of gesture in language comprehension.
Late-time cosmology of scalar-coupled

f(R,G)

gravity
Authors: Odintsov S D , Oikonomou V K , Fronimos F P
Published: February 2021

In this work by using a numerical analysis, we investigate in a quantitative way the late-time dynamics of scalar coupled

f

(

R
,
G

)

gravity. Particularly, we consider a Gauss–Bonnet term coupled to the scalar field coupling function ξ(ϕ), and we study three types of models, one with f(R) terms that are known to provide a viable late-time phenomenology, and 2 Einstein–Gauss–Bonnet types of models. Our aim is to write the Friedmann equation in terms of appropriate statefinder quantities frequently used in the literature, and we numerically solve it by using physically motivated initial conditions. In the case that f(R) gravity terms are present, the contribution of the Gauss–Bonnet related terms is minor, as we actually expected. This result is robust against changes in the initial conditions of the scalar field, and the reason is the dominating parts of the f(R) gravity sector at late times. In the Einstein–Gauss–Bonnet type of models, we examine two distinct scenarios, firstly by choosing freely the scalar potential and the scalar Gauss–Bonnet coupling ξ(ϕ), in which case the resulting phenomenology is compatible with the latest Planck data and mimics the Λ-cold-dark-matter model. In the second case, since there is no fundamental particle physics reason for the graviton to change its mass, we assume that primordially the tensor perturbations propagate with the speed equal to that of light’s, and thus this constraint restricts the functional form of the scalar coupling function ξ(ϕ), which must satisfy the differential equation

ξ

̈

=
H

ξ

̇

. The latter equation is greatly simplified when late times are considered and can be integrated analytically to yield a relation for

ξ

̇

, which depends solely on the Hubble rate, in a model independent way. This leads eventually to an elegant simplification of the Friedmann equation, which when solved numerically, yields a viable late-time phenomenology. A common characteristic of the Einstein–Gauss–Bonnet models we considered is that the dark energy era they produce is free from dark energy oscillations.
Surface potential in n- and p-GaInP2(100): temperature effect
Authors: Lebedev Mikhail V , Savchenko Grigory M , Averkiev Nikita S , Hajduk Andreas , Kaiser Bernhard , Jaegermann Wolfram
Published: February 2021

Surface potentials in chemically etched n- and p-GaInP2(100) are investigated by synchrotron-radiation photoemission spectroscopy at room and liquid-nitrogen temperatures. It is found that at low temperature the surface band bending in both n- and p-GaInP2(100) is reduced so that the surface bands become nearly flat. This effect is explained in the framework of semiconductor surface electrostatics. The proposed model enables quantitative characterization of the surface state spectrum based on the experimentally determined values of the surface potential at different temperatures. In particular, the surface states density values obtained are 2 × 1012 and 7 × 1012 cm–2 for n- and p-GaInP2(100) surfaces, respectively.
Nucleon scattering analysis with a lane-consistent dispersive optical potential for Hf, W and Ta isotopes
Authors: Zhao Xiuniao , Sun Weili , Soukhovitskiĩ E Sh , Martyanov D S , Quesada J M , Capote R
Published: February 2021

Nucleon scattering on tungsten and neighboring nuclei are analyzed with a coupled-channels method based on a soft-rotator structure model. The multiple band couplings and nuclear stretching factors are built using nuclear wave functions of the soft-rotator model with the Hamiltonian parameters adjusted to reproduce the energy of low-lying collective levels of corresponding nuclei. A regional lane-consistent dispersive coupled-channels optical-model potential is derived to reproduce the neutron total cross sections, nucleon elastic and inelastic scattering angular distributions, and analyzing powers. Excellent agreement with measurements is obtained for neutron total cross sections of 182,183,184,186W, 178Hf, and 181Ta targets in the whole energy range from 100 keV to 200 MeV; other scattering data are found to be in good agreement with measurements. A deformation-dependent nuclear radius correction arising from the volume conservation condition is introduced and allowed to remove phenomenological radii dependencies on nuclear mass from the potential geometry.
Helping restricted Boltzmann machines with quantum-state representation by restoring symmetry
Authors: Nomura Yusuke
Published: February 2021

The variational wave functions based on neural networks have recently started to be recognized as a powerful ansatz to represent quantum many-body states accurately. In order to show the usefulness of the method among all available numerical methods, it is imperative to investigate the performance in challenging many-body problems for which the exact solutions are not available. Here, we construct a variational wave function with one of the simplest neural networks, the restricted Boltzmann machine (RBM), and apply it to a fundamental but unsolved quantum spin Hamiltonian, the two-dimensional J
1–J
2 Heisenberg model on the square lattice. We supplement the RBM wave function with quantum-number projections, which restores the symmetry of the wave function and makes it possible to calculate excited states. Then, we perform a systematic investigation of the performance of the RBM. We show that, with the help of the symmetry, the RBM wave function achieves state-of-the-art accuracy both in ground-state and excited-state calculations. The study shows a practical guideline on how we achieve accuracy in a controlled manner.
Role of anti-phase boundaries in the formation of magnetic domains in magnetite thin films
Authors: Moreno Roberto , Jenkins Sarah , Skeparovski Aleksandar , Nedelkoski Zlatko , Gerber Alexander , Lazarov Vlado K , Evans Richard F L
Published: February 2021

Anti-phase boundaries (APBs) are structural defects which have been shown to be responsible for the anomalous magnetic behavior observed in different nanostructures. Understanding their properties is crucial in order to use them to tune the properties of magnetic materials by growing APBs in a controlled way since their density strongly depends on the synthesis method. In this work we investigate their influence on magnetite (Fe3O4) thin films by considering an atomistic spin model, focussing our study on the role that the exchange interactions play across the APB interface. We conclude that the main atypical features reported experimentally in this material are well described by the model we propose here, confirming the new exchange interactions created in the APB as the responsible for this deviation from bulk properties.
Numerical analysis of two-filter method for continuous measurement of airborne Rn-222
Authors: Wang Yadong
Published: February 2021

The two-filter method enables the continuous measurement of airborne Rn-222 via simultaneously sampling and counting. However, the slow time response of the two-filter detector and the overlapping counting data derived from the intervallic data acquisition make the interpretation of measurement results complicated. A valid data analysis to exactly match the series of counting data with the corresponding radon concentrations is desired. In this work, the continuous sampling and counting processes of the two-filter method is depicted numerically and the calculation of radon concentration from the raw counting data is given with detailed formulas. The numerical model is used to quantitatively investigate the influences of several key factors, including the volume of the radon delay chamber (5–10 000 l), the flow rate of air sampling (2.5–1000 l min−1) and the interval time of data acquisition (5–120 min), on the measurement sensitivity and accuracy, which provides an approach for the optimization of the design and measurement settings of a specific two-filter detector in relation to these aspects.
The role of chemical and microstructural inhomogeneities on interface magnetism
Authors: Laureti S , Gerardino A , D’Acapito F , Peddis D , Varvaro G
Published: February 2021

The study of interfacing effects arising when different magnetic phases are in close contact has led to the discovery of novel physical properties and the development of innovative technological applications of nanostructured magnetic materials. Chemical and microstructural inhomogeneities at the interfacial region, driven by interdiffusion processes, chemical reactions and interface roughness may significantly affect the final properties of a material and, if suitably controlled, may represent an additional tool to finely tune the overall physical properties. The activity at the Nanostructured Magnetic Materials Laboratory (nM2-Lab) at CNR-ISM of Italy is aimed at designing and investigating nanoscale-engineered magnetic materials, where the overall magnetic properties are dominated by the interface exchange coupling. In this review, some examples of recent studies where the chemical and microstructural properties are critical in determining the overall magnetic properties in core/shell nanoparticles, nanocomposites and multilayer heterostructures are presented.
Antiferromagnetic skyrmion repulsion based artificial neuron device
Authors: Bindal Namita , Ian Calvin Ang Chin , Lew Wen Siang , Kaushik Brajesh Kumar
Published: February 2021

Magnetic skyrmions are potential candidates for neuromorphic computing due to their inherent topologically stable particle-like behavior, low driving current density, and nanoscale size. Antiferromagnetic skyrmions are favored as they can be driven parallel to in-plane electrical currents as opposed to ferromagnetic skyrmions which exhibit the skyrmion Hall effect and eventually cause their annihilation at the edge of nanotracks. In this paper, an antiferromagnetic skyrmion based artificial neuron device consisting of a magnetic anisotropy barrier on a nanotrack is proposed. It exploits inter-skyrmion repulsion, mimicking the integrate-fire (IF) functionality of a biological neuron. The device threshold represented by the maximum number of skyrmions that can be pinned by the barrier can be tuned based on the particular current density employed on the nanotrack. The corresponding neuron spiking event occurs when a skyrmion overcomes the barrier. By raising the device threshold, lowering the barrier width and height, the operating current density of the device can be decreased to further enhance its energy efficiency. The proposed device paves the way for developing energy-efficient neuromorphic computing in antiferromagnetic spintronics.
Bottom-up field-directed self-assembly of magnetic nanoparticles into ordered nano- and macrostructures
Authors: Preger Calle , Josefsson Martin , Westerström Rasmus , Messing Maria E
Published: February 2021

Directed self-assembly of nanoparticles (NPs) is a promising strategy for bottom-up fabrication of nanostructured materials with tailored composition and morphology. Here, we present a simple and highly flexible method where charged magnetic aerosolized (i.e. suspended in a gas) NPs with tunable size and composition are self-assembled into nanostructures using combined electric and magnetic fields. Size-selected Co, Ni, and Fe NPs have been generated by spark ablation, and self-assembled into different structures, ranging from one-dimensional nanochains to macroscopic three-dimensional networks. By comparing the resulting structures with simulations, we can conclude that the magnetization of the NPs governs the self-assembly through interparticle magnetic dipole−dipole interactions. We also show how the orientation of the external magnetic field directs the self-assembly into differently aligned nano- and macroscopic structures. These results demonstrate how aerosol deposition in a combined electric and magnetic field can be used for directed bottom-up self-assembly of nanostructures with specialized composition and morphology.
An enhancement on supercapacitor properties of porous CoO nanowire arrays by microwave-assisted regulation of the precursor
Authors: Sun Yin , Zhang Junjie , Liu Sen , Sun Xiannian , Huang Naibao
Published: February 2021

A microwave-assisted hydrothermal approach with a follow up thermal treatment was employed to prepare 1D porous CoO nanowires, which is constructed by numerous high crystallinity nanoparticles. A significant change in crystal structure of the precursor were observed, as position shift and absence of some diffraction peaks, which was induced by the microwave-assistance during hydrothermal process. Moreover, the precursor’s purity was also effectively improved. As a result, the as-synthesized CoO annealed from the microwave-assisted precursor exhibited a morphology and phase structure significantly different from that of without microwave involvement. Benefiting from the ‘microwave effect’, the microwave-assisted as-fabricated porous CoO nanowires showed an enhanced specific capacitance (728.8 versus 503.7 F g−1 at 1 A g−1 ), strengthened rate performance (70.0% versus 53.2% maintenance at 15 A g−1), reduced charge transfer resistance (1.06 Ω versus 2.39 Ω), enlarged window voltage (0.85 versus 0.7 V) and enhanced cycle performance (82.3% versus 76.5% retention after 5000 cycles at 15 A g−1), compared with that of sample without microwave assistance. In addition, the corresponding electrochemical properties are also higher than those reported CoO sample prepared by solvothermal method. In conclusion, this work provides a practical way for enhancing electrochemical properties of supercapacitor materials through adjusting the precursor by microwave assistance into hydrothermal process.