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The aim of this paper is to better understand the generation and transmission mechanism of the electromagnetic acoustic transducer (EMAT).

A semi-analytical method was used to calculate the Lorentz force. Both the hypothetical magnetic field mirror method and the diffusion equation were adopted to solve the eddy current distribution by variables separation method in time domain. A three-dimension magnetostatic finite element model was used to calculate the static magnetic field and the relative permeability. And an experimental platform with a piezoelectric probe to generate and an EMAT to receive, the ultrasonic wave was set up to verify the distribution of the Lorentz force.

The Lorentz force at different time and in different positions of the steel plate can be easily calculated. The experimental results show a good agreement with the analytical results.

The accurate prediction of the Lorentz force provides an insight into the physical phenomenon of EMAT and a powerful tool to design optimum EMAT.

The purpose of this paper is to use the corresponding magnetic sensor and detection method to detect and image the defects of small diameter pipelines. Urban gas pipeline is an energy transportation tool for urban industrial production and social life, which is closely related to urban safety. Preventing the occurrence of urban gas pipeline transportation accidents and carrying out pipeline defect detection are of great significance for the urban economic and social stability. To perform pipeline defect detection, the magnetic flux leakage internal detection method is generally used in the detection of large-diameter long-distance oil and gas pipelines. However, in terms of the internal detection of small-diameter pipelines, due to the heavy weight, large structure of the detection device and small pipe diameter, the detection is more difficult.

In order to solve the above matters, self-made three-dimensional magnetic sensor and three-dimensional magnetic flux leakage imaging direct method are proposed for studying the defect identification. Firstly, for adapting to the diameter range of small-diameter pipelines, and containing the complete information of the defect, a self-made three-dimensional magnetic sensor is made in this paper to improve the accuracy of magnetic flux leakage detection. And on the basis of it, a small diameter pipeline defect detection system is built. Secondly, as detection signal may be affected by background magnetic field interference and the jitter interference, the complete ensemble empirical mode decomposition with adaptive noise method is utilized to screen the detected signal. As a result, the useful signal is reconstructed and the interference signal is removed. Finally, the defect contour inversion imaging of detection is realized based on the direct method of three-dimensional magnetic flux leakage imaging, which includes three-dimensional magnetic flux leakage detection data and data segmentation recognition.

The three-dimensional magnetic flux leakage imaging experimental results shown that, compared to the actual defects, the typical defects, irregular defects and crack groove defects can be analyzed by the magnetic flux leakage defect contour imaging method in qualitative and quantitative way respectively, which provides a new idea for the research of defect recognition.

A three-dimensional magnetic sensor is made to adapt the diameter range of small diameter pipeline, and based on it, a small-diameter pipeline defect detection system is built to collect and display the magnetic flux leakage signal.

SMEs that manage more sustainability focused initiatives into their core business strategy can possibly benefit from lower expenses, reduced threats and new business opportunities, but in Malaysia most of the SMEs are still far off in terms of adapting to a sustainable business growth outline from a holistic point of view. Hence, this study aims to serve deeper understanding about a strategic innovation focused sustainable growth model on basis of multidisciplinary QBL-QHIM theoretical perspectives where strategic innovation practices intervene in between desired growth and government support (regulations).

This conceptual investigation embraces a newly emerged concern of sustainable business growth in SMEs, considering ranges of literature reviews from the disciplines of management and entrepreneurship. The study also systematically explores the concepts of regulations, strategic innovation practices on basis of QBL and QHIM theories to adjust the sustainable business growth model from a holistic angle.

The outcomes show that multidisciplinary QBL-QHIM conjunction within the interrelationships of the selected constructs holds the potential for innovation focused business growth in a more sustainable, comprehensive and holistic manner. The study also detects that exploitative-explorative innovation practices can possibly mediate in between suitable regulations and sustainable business growth of SMEs, considering supportive external environment.

Researches are encouraged to test the proposed model.

The study indicates a conceptual configuration for policy makers as well as entrepreneurs to ensure sustainable business growth for SMEs. The outcomes of the study also provide useful direction on decision-making process of owner or manager considering social, economic, environmental and spiritual aspects of daily operations.

The conceptual model may possibly able to generate more social values, considering a holistic angle into business activities.

The conceptualization is a unique attempt, considering developing regions to extend the current understanding of strategic innovation focused sustainable growth process of SMEs from a holistic angle.

Previous experience is a critical factor affecting entrepreneurial activities; however, it has not been fully studied in the existing literature. This study attempts to comprehensively reveal the routes and mechanisms of occupational experience that affect entrepreneurial activities and assess the entrepreneurial potential of different occupational practitioners.

By matching occupational characteristics with entrepreneurs' competence, this study proposes ten hypotheses about how occupational experience affects entrepreneurial entry and performance. This empirical study is based on the Occupational Information Network database and Chinese survey data. Factor and regression analyses were used in the empirical research.

This study verifies that different occupational practitioners have varied entrepreneurial potential. Occupational experience, including occupational uncertainty, market contact and social capital, gained from previous experience significantly affects entrepreneurial entry. Meanwhile, occupational characteristics, including management experience, marketing experience, social capital, financial capital, risk-taking ability and creativity, accumulated from previous experience, have a significant impact on entrepreneurial performance.

This study is a pioneering attempt to reveal the relationship between occupational experience and entrepreneurial activities. The transmission mechanism of previous experiences affecting entrepreneurial activities is comprehensively revealed by relaxing the assumption of a representative occupation. These findings provide a theoretical foundation for empirical evidence and have important practical value.

This study aims to explore how the application of digital technology and information technology can help firms improve their innovation performance and examines the mediating mechanisms of supply chain agility and supply chain integration.

This study conducted a questionnaire survey of 320 business managers in an automotive cluster in China and analyzed the collected data using structural equations.

Digital technology applications (DTA) have a positive impact on innovation performance, while supply chain agility and integration mediate this impact. In addition, information technology applications (ITA) also has a positive impact on innovation performance, while supply chain agility and integration mediate between the two. Supply chain agility (SCA) and supply chain integration (SCI) significantly enhance the positive impact of technology adoption on firms' innovation performance.

This study confirms the impact of digital technology and information technology applications on innovation performance and explores the mediating role played by supply chain agility and integration.

The aim of this research is to understand how government incentives (financial and non-financial) influence the relationship between green innovation and Sustainable Development Goals (SDGs) in SMEs.

To contribute to the literature, this research uses empirical evidence of 204 Pakistani small and medium-sized enterprises (SMEs) and tests the moderating role of government support between green innovation and SDGs.

The findings indicate that green innovation has a significant influence on SDGs, community development and environmental activities. The government support significantly strengthens the relationship between green innovation and environmental practices, while it does not moderate the path between green innovation and community development.

The research recommends SMEs focus on the adoption of green innovation and green technology to protect the environment and facilitate the community. Moreover, the research advises the government to assist SMEs financially and nonfinancially, so they will in turn help in the attainment of SDGs.

This research is the first attempt to assess the importance of green innovation in SDGs with a moderating role of government incentives in emerging SMEs. It provides several useful implications for policymaking.

This research outlines the Hong Kong film industry with examination of key actors, directors, films, and production companies within the martial arts genre of Hong Kong Action Cinema. Hong Kong Film Award winners and nominees, core films within genres, and core reference works both general and theoretical from experts in the field of Hong Kong martial arts film research have been highlighted. Web sites are suggested that provide reviews of Hong Kong martial arts films, biographical information on a variety of actors and actresses as well as comprehensive bibliographic information on select films. Also included are commercial Web sites that provide Hong Kong martial arts films.

The purpose of this study is to contrast the capacity of tourism-specialized and non-tourism-specialized systems in small developing insular societies to achieve a well-being model aligned with the Agenda 2030.

The empirical method of this work consists of a panel-corrected standard errors analysis for a total of seven Caribbean Small Island Developing States (SIDS) to measure the contribution of both economic diversification and tourism specialization to well-being in the Agenda 2030 framework. Time period considered in the analysis include 2005–2019.

Linear and nonlinear relationships reveal the need to conjugate both tourism specialization and economic diversification in the 2030-development agendas of small developing insular societies as both represent a means to achieve a well-being model aligned with the Agenda 2030.

One of the main novelties of this work is that development is analyzed from a multidimensional point of view (standard of living, access to education and health services), as an integrated thinking that considers any tourism development model that defines a route with Sustainable Development Goals (SDGs) and Agenda 2030 as main destination in SIDS. Specifically, practical implications are given combining recommendations to foster development and face poverty (SDG-1), while inequalities situations are reduced (SDG-10) and decent jobs are generated (SDG-8). These implications also focus on strengthening local suppliers of goods and services from other sectors to be integrated into the destination value chain (SDG-2), ensuring access to education (SDG-4) and contributing to gender equality (SDG-5).

这项工作的实证方法包括对7个加勒比海小岛屿发展中国家进行面板校正标准误差（PCSE）分析, 以衡量经济多样化和旅游专业化对2030年议程框架中的福祉的贡献。分析中考虑的时间段包括2005–2019年。

这项工作的目的是对比小型发展中岛国社会的旅游专业系统和非旅游专业系统的能力, 以实现与2030年议程相一致的福祉模式。

线性和非线性关系表明, 在发展中小岛国社会的2030年发展议程中, 需要将旅游专业化和经济多样化结合起来, 因为两者都是实现与2030年议程一致的福祉模式的手段。

这项工作的主要创新点之一是, 从多维的角度（生活水平、受教育机会和健康服务）来分析发展, 作为一种综合思维, 考虑任何旅游发展模式, 确定了一条以可持续发展目标和2030年议程为主要目的地的小岛屿发展中国家路线。具体来说, 在减少不平等状况（SDG-10）和创造体面工作（SDG-8）的同时, 结合促进发展和面对贫困（SDG-1）的建议, 给出了实际意义。此外, 要加强其他部门的货物和服务的当地供应商, 以融入目的地价值链（SDG-2）, 保证受教育的机会（SDG-4）和促进性别平等（SDG-5）。

El método empírico de este trabajo consiste en un análisis de errores estándar corregidos por panel (PCSE) para 7 Pequeños Estados Insulares en Desarrollo para medir la contribución al bienestar a través de la especialización turística y la diversificación económica en el marco de la Agenda 2030. El horizonte contemplado en el análisis incluye 2005–2019.

El objetivo de este trabajo es contrastar la capacidad de los sistemas especializados y no especializados en turismo dentro de las pequeñas sociedades insulares en desarrollo para lograr un modelo de bienestar alineado con la Agenda 2030.

Las relaciones lineales y no lineales revelan la necesidad de conjugar tanto la especialización turística como la diversificación económica en las agendas de desarrollo 2030 de las pequeñas sociedades insulares en desarrollo, ya que ambas representan un medio para alcanzar un modelo de bienestar alineado con la Agenda 2030.

Una de las principales novedades de este trabajo es que se analiza el desarrollo desde un punto de vista multidimensional (nivel de vida, acceso a la educación y servicios de salud), como un pensamiento integrado que considera cualquier modelo de desarrollo turístico que defina una ruta con los ODS y la Agenda 2030 como destino principal en los PEID. En concreto, se ofrecen implicaciones prácticas que combinan recomendaciones para fomentar el desarrollo y hacer frente a la pobreza (ODS-1), al tiempo que se reducen las situaciones de desigualdad (ODS-10) y se generan empleos decentes (ODS-8). Asimismo, fortalecer a los proveedores locales de bienes y servicios de otros sectores para que se integren en la cadena de valor del destino (ODS-2), garantizar el acceso a la educación (ODS-4) y contribuir a la igualdad de género (ODS-5).

The selection of purchasing channels by wine consumers indirectly affects buying experience and satisfaction, therefore, it is of great practical significance to study consumers' preference on channel selection. The purpose of this study is to investigate the current state of consumer selection for purchasing channel and the corresponding influencing factors.

A total of 2,976 valid questionnaires were collected by convenience sampling from 34 provinces, municipalities and autonomous regions of China in 2020 via the Internet, yielding a response rate of 82.2%. A categorical statistical approach was used to understand consumer's selection for each channel. Besides, binary logistic regression model was used to analyze the factors affecting consumers' channel selection.

The results show that Chinese wine consumers' main purchasing channels are as follows: supermarket/mall, wine specialty stores, comprehensive e-business flagship stores, comprehensive e-business individual stores, restaurants and short video and live streaming platforms. Estimation results showed that among the 12 influencing factors in 4 categories, consumers' education and some other factors significantly influenced consumers' decision on wine purchasing channels.

Limited by time and experimental conditions, this study did not analyze the trend of wine consumers' purchasing channel selection. Future work would concentrate on multi-year data and conduct longitudinal comparative analysis.

This study innovatively subdivides the currently popular wine sales channels in Chinese market and conducts research related to consumer channel selection. The results of the study can provide reference for wine producers and distributors to update their strategic layout and also help various channels to understand the characteristics of their customer groups for targeted marketing.

This paper aims to cover the recent (2010-2016) techniques for carrying out hardness evaluation on lead-free solders. Details testing configuration/design were compiled and discussed accordingly to each of the measurement techniques: Vickers microhardness, Brinell microhardness and nanoindentation.

A brief introduction on lead-free solders and the concept of hardness testing has been described at the beginning of the review. Equipment setup, capabilities, test configuration and outcomes were presented for each technique and discussed in parallel along with the case studies from selected articles.

Comparison, outcomes and insight regarding each of the methods were highlighted to observe the recent trends, scientific challenges, limitations and probable breakthroughs of the particular hardness testing methods.

The compilation of latest reports, technical setup plus with the critics and perception from the authors are the main key value in this review. This provides an in-depth understanding and guidance for conducting hardness evaluation on lead-free solders.