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This study aims to establish a bio-inspired controller for realizing the bounding gait of a quadruped robot system presented in this paper.

The bio-inspired controller is divided into three levels to mimic the biological patterns of animals. First, the high-level sub-controller is equivalent to the cerebellum, which could plan and control the motion of animals. Second, the effect of the middle-level sub-controller corresponds to the central nervous system. The central pattern generators in the spine generate the stable and cyclic signals as the fundamental rhythm for periodic motion of the leg and spine joints. Third, the low-level sub-controller is equal to the end effector, which adopts the simple proportional-derivative (PD) control to realize the specific motion trajectory of the legs and spine.

Combined with the stability criterion presented previously and the delayed feedback control method, the bounding gait of the cheetah virtual prototype could be actuated and stabilized by the bio-inspired controller. Moreover, the bio-inspired controller is applied to realize the bounding gait of an SQBot, which is a quadruped robot with a spine joint. Meanwhile, the validity and practicability of the bio-inspired controller for the control of quadruped robot have been verified against different forward velocities.

The bio-inspired controller and bionic quadruped robot system are instructive for the designing and actuating of the real quadruped robot.

The purpose of this study is to establish a finite element (FE) model with the random distribution of the Nylon12/hydroxyapatite (PA12/HA) composite material in selective laser sintering (SLS) process for considering the material anisotropy, which aims to obtain the law of temperature and stress changes in PA12/HA sintering.

By using python script in Abaqus, the FE model is established in which the two materials are randomly distributed and are assigned to their intrinsic temperature-dependent physical parameters. Molten pool sizes at various process parameters were evaluated in terms of numerical simulation and scanning electron microscope analysis, identifying a good agreement between them. Evaluation of temperature and stress distribution under the condition of different HA contents was also conducted.

It shows that the uneven distribution and quantity of HA powder play a vital role in stress concentration and temperature increase. Additionally, the influence of HA addition on the mechanical performance of SLS-fabricated parts shows that it is conducive to improve compressive strength when the HA ratio is less than 5% because an excess of HA powder tends to bring about a certain amount of microspores resulting in a decrease in part density.

The FE model of the PA12/HA composite material with parameterized random distribution in SLS can be applied in other similar additive manufacturing technologies. It provides a feasible guideline for the numerical analysis of properties of composite materials.

This study aims to improve the corrosion resistance of TA2-welded joints by superhydrophobic surface modification using micro-arc oxidation technology and low surface energy substance modification.

The microstructure and chemical state of the superhydrophobic film layer were analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy, three-dimensional morphology, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared absorption spectroscopy. The influence of the superhydrophobic film layer on the corrosion resistance of TA2-welded joints was investigated using classical electrochemical testing methods.

The characterization results showed that the super hydrophobic TiO₂ ceramic membrane was successfully constructed on the surface of the TA2-welded joint, and the construction of the super hydrophobic film greatly improved the corrosion resistance of the TA2-welded joint.

The superhydrophobic TiO₂ ceramic membrane has excellent corrosion resistance. The micro nanostructure in the superhydrophobic film can intercept air to form an air layer to prevent the corrosion medium from contacting the surface, thus, improving the corrosion resistance of the sample.

Along with the acceleration of Chinese urbanization, urban history degrades at a rapid rate, and development follows formalism. Based on architectural typology, this study introduces a methodology of concept mapping and discusses the urban complex design method from a perspective of regional cultural elements. The theoretical analysis shows that concept mapping represents an integrated solution that incorporates regional cultural elements into architectural planning. Through the concept mapping method, it not only protects the physical environment, but also strengthens modern urban residents’ psychological sense of belonging to their own living space. Meanwhile, distinct regional cultural elements can be efficiently combined in the overall layout, monomer building design, building details design, and landscape design of urban complex by using different architectural design methods. This design method is validated using an actual case in Guizhou. Therefore, it forms a complete set of design method with a three-step framework, namely positioning cultural areas, summarizing regional cultural elements, and selecting the mapping method and combination mode.

The purpose of this paper is to investigate the extent to which societal culture has a moderating effect on the business benefits of corporate social responsibility (CSR).

A cross-national research design was conducted using survey data collected from 164 firms in Taiwan and 196 firms in Canada.

We found societal differences in the positive influence of CSR on corporate image and employee commitment. Specifically, we found that the relationships between CSR (customer-oriented and employee-oriented) and corporate image were stronger for Taiwanese firms than for Canadian firms. In addition, employee CSR was found to be more strongly associated with higher employee commitment in Taiwan than in Canada. While customer CSR was associated with enhanced customer loyalty, this relationship was similar for firms in both countries.

Multi-informants for data collection and longitudinal research design in future research would be required for further understanding of the relationships among the variables in this study.

This paper suggests that the business benefits of customer and employee CSR practices may yield relatively greater competitive advantages in East Asian countries where CSR is not as established or taken for granted as in Western countries.

This study draws on the strategic perspective to investigate the value of CSR practices yielding different business benefits in contrasting cultural contexts.

Drawing on the cognitive-functional model of emotions and emotional contagion, the authors aim to examine the role of negative emotions in the diffusion of cancer tweets.

Using an integrated approach of social network and text analytics, the authors analyzed 142,883 cancer tweets from February to March 2018. The roles of negative emotions, emotional contagion, cancer themes and user influence on the diffusion of cancer tweets were examined.

Results indicated that cancer tweets expressing negativity and anger diffused more widely, while those expressing sadness or fear were less likely to diffuse. However, contrary to the authors’ expectation, cancer tweets expressing negative emotions (i.e. negativity, anger and fear) were less likely to arouse similar emotions among retweets, thus suggesting that emotions in cancer tweets were not as contagious as they seemed. Finally, user influence was the most important factor explaining the diffusion of cancer tweets, although cancer-related themes (i.e. affective, informative and social) had marginal effects on likelihood of diffusion.

Using a novel integrated social network–text analytics approach, the authors found that to understand cancer tweets' diffusion, it is critical to go beyond examining the content of tweets about cancer and the influence of messengers – the virality of cancer tweets is inextricable from the negative emotions.

Human computation games (HCGs) that blend gaming with utilitarian purposes are a potentially effective channel for content creation. The purpose of this paper is to investigate the driving factors behind players’ adoption of HCGs through a music video tagging game. The effects of perceived aesthetic experience (PAE) and perceived output quality (POQ) on HCG acceptance are empirically examined.

An integrative structural model is developed to explain how hedonic and utilitarian factors, including PAE and POQ, working with another salient factor – perceived usefulness (PU) – affect the acceptance of HCGs. The structural equation modeling method is used to verify the proposed model with data from 124 participants.

Results show that PAE is the strongest predictor of HCGs adoption. PU has a significant impact on individuals’ attitude toward HCGs. POQ is a salient predictor of PU and PAE, and its indirect effect on attitude is significance.

From an academic point of view, this study provides a good understanding of the driving factors behind player acceptance of HCGs and adds new knowledge to games with utilitarian purposes. It is also one of the first to describe the components of game enjoyment with a taxonomy of aesthetic experiences. From the practical perspective, the investigation of the specific factors behind adoption of HCGs provides specific guidelines for their design and evaluation.

The purpose of this paper is to investigate Chinese and American financial companies’ distinct brand personality indicators shown through culturally based linguistic features online. The potential correlation between culturally oriented brand personalities and companies’ financial performance is also examined.

This study employs computerized content analyses to examine the cross-cultural differences among 28 American and Chinese financial companies’ online communication based on Aaker’s brand personality framework.

The findings reveal that despite some similarities, there are significant differences between the frequencies and patterns of brand personality indicators on American and Chinese websites, which demonstrate the connection between the companies’ linguistic preferences with their different cultural backgrounds. It also proves that there could be significant relationship between financial companies’ corporate brand (CB) personality expressions and their financial performance, and US financial companies’ revenues are more closely correlated with brand personality dimensions than Chinese companies’.

The necessity for cross-cultural adaptation of CB personality is verified in this study. Chinese international companies may have a big room to improve their online corporate communication. Similarly, foreign companies who intend to enter into Chinese market may think about laying emphasis on their personality indicators of competence in their online corporate communication.

This research is among the first to utilize a corpus-based analytical tool to conduct content analyses of financial companies’ online brand personalities, in addition to empirically validate the correlations between companies’ brand personality indicators and financial performance. The study enriches the literature on online marketing communication, draws attention to the connection between cultural differences and linguistic preferences in CB personality construction and emphasizes the importance of making appropriate cross-cultural adaptation in online corporate communication.

The purpose of this paper is to investigate Chinese stock market reaction to the announcements of dividend reductions and omissions.

The data sets cover the period from 1990 to 2009. A rolling portfolio approach is performed and the Fama–French three-factor model is used to calculate the post-announcement long-term abnormal returns. The matching method and the sub-sample tests are used to examine the robustness.

After controlling for firm size, the unexpected earnings and government ownership, no evidence of the dividend announcement drift is found. The results also show that the government ownership and the large trading play a role in explaining the post-announcement abnormal returns.

This is the first study concerning the Chinese market that examines the Chinese stock market reaction to dividend cut and omission using a long-time period of data.