Md. Bayezid Alam and Zhiyong Zhu
This study explores the development trajectory of private tutoring in Bangladesh. Specifically, it illustrates how private tutoring has emerged and expanded in the country's…
Abstract
Purpose
This study explores the development trajectory of private tutoring in Bangladesh. Specifically, it illustrates how private tutoring has emerged and expanded in the country's education system and examines how governments have responded on this issue.
Design/methodology/approach
The authors adopted a case study methodology for this study. Data were gathered from different secondary sources such as books, official documents, scholarly articles, and newspaper reports. The data analysis process consists of three-phases of activities: data reduction, data display, and conclusion drawing/verification.
Findings
Private tutoring historically existed in Bangladesh. It is rapidly expanded in the country's education system – from primary to higher secondary level. Currently, it has reached an industrialization stage, where commercial coaching has become a major type of tutoring. The expansion of private tutoring is the inevitable result of the continued privatization and marketization of education. To bring the private tutoring under a framework, the government has taken some regulatory measures that can be characterized as “laissez-faire.” The existing measures are largely ineffective, as the policy makers followed an “top-down” approach when framing the policies.
Originality/value
This study, to the best of the authors' knowledge, is the first to target the historical aspects of private tutoring in Bangladesh. It has potential to fill out the literature gap on private tutoring by analyzing its policy aspect.
Details
Keywords
Yiming Hu, Xinmin Tian and Zhiyong Zhu
In capital market, share prices of listed companies generally respond to accounting information. In 1995, Ohlson proposed a share valuation model based on two accounting…
Abstract
Purpose
In capital market, share prices of listed companies generally respond to accounting information. In 1995, Ohlson proposed a share valuation model based on two accounting indicators: company residual income and book value of net asset. In 2000, Zhang introduced the thought of option pricing and developed a new accounting valuation model. The purpose of this paper is to investigate the valuation deviation and the influence of some market transaction characteristics on pricing models.
Design/methodology/approach
The authors use listed companies from 1999 to 2013 as samples, and conduct comparative analysis with multiple regression.
Findings
The main findings are: first, the accounting valuation model is applicable to the capital market as a whole, and its pricing effect increases as years go by; second, in the environment of out capital market, the maturity of investors is one of important factors that causes the information content of residual income less than that of profit per share and lower pricing effect of valuation models; third, when the price earning (PE) of listed companies reaches certain level, the overall explanation capacity of accounting valuation models will become lower as PE gets higher; fourth, as for companies with higher turnover rate and more active transaction, the pricing effect of accounting valuation model is obviously lower; fifth, the pricing effect of accounting valuation models in a bull market is lower than in a bear market.
Originality/value
These findings establish connection between accounting valuation and market transaction characteristics providing an explorable orientation for the future development of accounting valuation theories and models.
Details
Keywords
Zhiyong Li, Honglin Chen, Songshan (Sam) Huang, Phakcharee Wanichwasin and Rui Cui
Thailand has served as a major outbound tourist destination for Chinese tourists for decades. Behaviours demonstrated by Chinese tourists in Thailand are believed to have created…
Abstract
Purpose
Thailand has served as a major outbound tourist destination for Chinese tourists for decades. Behaviours demonstrated by Chinese tourists in Thailand are believed to have created an image of Chinese outbound tourists among the residents and have impacted on the sustainability of Thai tourism. This study aims to contribute a more comprehensive and nuanced understanding of the image of Chinese outbound tourists from the perspective of Thai residents’.
Design/methodology/approach
In-depth interviews were conducted with 15 Thai residents who have frequent contact with Chinese tourists.
Findings
The results reveal that Thai residents’ perceptions of Chinese tourists include both positive and negative images. Positive images consist of being filial and friendly (e.g. taking good care of the elderly and having close emotional ties within their touring group) and being wealthy and auspicious (e.g. having a lot of money to spend and tipping generously). Negative images include moral norms (e.g. making loud noises and jumping into a queue), hygiene habits (e.g. littering and spitting) and religious culture (e.g. touching and climbing Buddha statues).
Originality/value
This qualitative research promotes the study of destination residents’ perceptions of tourists’ in the context of outbound tourism and enriches the application of social representation theory from the perspective of residents in the field of tourism marketing. It generates a more nuanced comprehension of Thai residents’ perceptions of Chinese tourists, contributes to the government’s formulation of guidelines for civilised tourism and has benefits to the sustainable development of tourism destinations.
泰国居民对中国游客的形象感知
摘要
目的
几十年来, 泰国一直是中国游客的主要出境旅游目的地。中国游客在泰国表现出的行为在居民中创造了中国出境游客的形象, 并影响了泰国旅游业的可持续性。这项研究旨在从泰国居民的感知出发, 对中国出境游客的形象进行更全面、细致的了解。
设计/方法/方法
对15位经常与中国游客接触的泰国居民进行了深入访谈。
结果
结果表明, 泰国居民对中国游客形象的感知既包括正面形象也包括负面形象。正面的形象包括孝顺和友善(例如, 照顾老人, 并在其旅行团中保持紧密的情感联系), 富有和吉祥(例如, 有很多钱可花, 并慷慨地付小费), 而负面的形象则包括道德规范(例如, 大声喧哗, 并插队), 卫生习惯(例如, 乱扔垃圾和随地吐痰)以及宗教文化(例如, 触摸和爬到佛像上)。
独创性/价值
这项定性研究弥补了出境旅游背景下目的地居民对游客形象的感知的差距, 并且从居民的角度出发丰富了社会表象理论在旅游营销领域的应用。它使泰国居民对中国游客的认识更加细致, 有助于政府制定有针对性的文明旅游指导方针, 有利于旅游目的地未来的可持续发展。
Percepción de los residents tailandeses sobre el comportamiento de los turistas chinos
Objetivo
Por décadas, Tailandia ha sido un principal destino tulístico de turismo emisor para los turistas chinos.El comportamiento de los turistas chinos en Tailandia ha impresionado las imagenes de los turistas chinos emisores a los habitantes, y ha afectado la sostenibilidad de la industria turística de Tailandia. Esta investigación tiene como objetivo comenzar con la percepción de los habitantes tailandeses para conocer una comprensión más completa y detallada de las imagenes de los turistas chinos emisores.
Diseñar/Manera/Manera
Entrevisitar en profundidad a 15 habitantes tailandeses que a menudo contactan con los turistas chinos.
Resultado
Los resultados muestran, las percepciones de los habitantes tailandeses de las imagenes de los turistas chinos contienen las imagenes positivas y negativas. Los imágenes positivas incluyen fiedad filial y amabilidad (por ejemplo, cuida a los ancianos y mantiene una estrecha conexión emocional con su grupo de viaje), riqueza y buena suerte (Por ejemplo, tiene mucho dinero para gastar y propina generosa.) pero las imagenes negativas incluyen las normas étias (por ejemplo, hace ruido fuerte y corta en línea.) los hábitos de higienes (por ejemplo, tira basura al azar y escupiendo por todas partes.) y cultura religiosa (por ejemplo, toca y trepa los estatuas de Buda.)
Originalidad/Valor
Esta investigación cualitativa cierra la brecha en los percepciones de los habitantes de desino de las imagenes de turistas en el contexto del turisimo emisor y comenza con los aspectos de los habitantes enriquece la aplicación de la teoría de la representación social en el campo de marketing turístico. Deja los habitantes tailanteses conocer a los turistas chinos más detallada y ayuda al gobierno a desarrollar pautas específicas de turismo civilizado y es benificioso para el futuro desarrollo sostenible de los destinos turísticos.
Details
Keywords
Qingquan Meng, Jiyou Jia and Zhiyong Zhang
The purpose of this study is to verify the effect of smart pedagogy to facilitate the high order thinking skills of students and to provide the design suggestion of curriculum and…
Abstract
Purpose
The purpose of this study is to verify the effect of smart pedagogy to facilitate the high order thinking skills of students and to provide the design suggestion of curriculum and intelligent tutoring systems in smart education.
Design/methodology/approach
A smart pedagogy framework was designed. The quasi-experiment was conducted in a junior high school. The experimental class used the smart pedagogy and smart learning environment. The control class adopted conventional teaching strategies. The math test scores of these two classes were compared to verify the effectiveness of smart pedagogy.
Findings
The smart pedagogy framework contains three sections including the situated learning (S), mastery learning (M), adaptive learning (A), reflective learning (R) and thinking tools (T) (SMART) key elements model, the curriculum design method and detailed teaching strategy. The SMART key elements model integrates the situated learning, mastery learning, adaptive learning, reflective learning and thinking tools to facilitate the high order thinking. The curriculum design method of smart pedagogy combines the first five principles of instruction and the SMART key elements model to design the curriculum. The detailed teaching strategies of smart pedagogy contain kinds of innovative learning methods. The results of the quasi-experiment proved that the learning outcome was significantly promoted by using smart pedagogy.
Originality/value
This research investigates a general framework that can be used to cultivate the high order thinking skills in different subjects and grades was one of the first to introduce high order thinking skills into smart education. The framework of smart pedagogy was innovative and effect in practice.
Details
Keywords
Zhiyong Li, Xiaoxuan Zhang, Kailu Yang, Russ Singer and Rui Cui
COVID-19 has severely affected urban and rural tourism in China, which has been extensively reported in the newspapers. This paper aims to discuss the impact of COVID-19 on urban…
Abstract
Purpose
COVID-19 has severely affected urban and rural tourism in China, which has been extensively reported in the newspapers. This paper aims to discuss the impact of COVID-19 on urban and rural tourism at each critical juncture of the COVID-19 pandemic, as well as the studies, measures and attitudes of various stakeholders toward urban and rural tourism and their future development.
Design/methodology/approach
This paper collects Chinese news reports as the research object and uses ROST Content Mining 6.0 and Gephi software to analyze and visualize the data for high-frequency words and analyzed the discourse of stakeholders within the newspaper text.
Findings
This study found that prior to February 20, 2020, the Chinese Government mainly focused on pandemic prevention. From February 21 to April 3 (before The Qingming Festival), resumption of work and production became the theme. From April 4 to May 1 (before May Day), a time-sharing reservation system was widely implemented and the differentiation between urban and rural tourism became more prominent. After May 1, rural tourism attracted greater attention.
Originality/value
This paper uses discourse analysis to understand the impact of COVID-19 on urban and rural tourism from the perspective of time nodes and the relationship between various stakeholders and predicts the development trends within urban and rural tourism. This paper enriches and expands tourism management knowledge in the face of major crises, providing valuable advice for managers and investors and makes suggestions for the development of urban and rural tourism.
目的
COVID-19已严重影响了中国的城市和乡村旅游业, 报纸上对此进行了广泛报道。本文旨在探讨在COVID-19大流行的每个关键时刻对城乡旅游的影响, 以及各种利益相关者对城乡旅游及其未来发展的观点, 措施和态度。
设计/方法
本文以中文新闻报道为研究对象, 利用ROST Content Mining 6.0和Gephi软件对高频词数据进行分析和可视化, 分析了报纸正文中利益相关者的话语。
结果
这项研究发现, 在2020年2月20日之前, 中国政府主要将重点放在疫情防控上。 2月21日至4月3日(清明节之前), 复工复产成为主题。 从4月4日至5月1日(五一节之前), 分时预约系统得到广泛实施, 城市和乡村旅游业的区别更加突出。 5月1日之后, 乡村旅游引起了更多关注。
创意/价值
本文通过话语分析从时间节点和各个利益相关者之间的关系的角度了解了COVID-19对城乡旅游业的影响, 并预测了城乡旅游业的发展趋势。 面对重大危机, 本文丰富和扩展了旅游管理知识, 为管理者和投资者提供了宝贵的建议, 并为城乡旅游业的发展提供了建议。
Propósito
COVID-19 ha afectado gravemente al turismo urbano y rural en China, que ha sido ampliamente informado en los periódicos. Este documento tiene como objetivo discutir el impacto de COVID-19 en el turismo urbano y rural en cada coyuntura crítica de la pandemia de COVID-19, así como los puntos de vista, las medidas y las actitudes de diversos interesados en relación con el turismo urbano y rural y su desarrollo futuro.
Diseño/metodología/enfoque
Este documento recopiló informes de noticias chinos como objeto de investigación y utilizó el software ROST Content Mining 6.0 y Gephi para analizar y visualizar los datos de palabras de alta frecuencia y analizó el discurso de los interesados dentro del texto del periódico.
Conclusiones
Este estudio encontró que antes del 20 de febrero de 2020, el gobierno chino se centró principalmente en la prevención de la pandemia en lugares pintorescos. Del 21 de febrero al 3 de abril (antes del Festival de Qingming), la reanudación del trabajo y la producción se convirtió en el tema. Desde el 4 de abril hasta el 1 de mayo (antes del Primero de Mayo), se implementó ampliamente un sistema de reserva de tiempo compartido y la diferenciación entre el turismo urbano y el rural se hizo más prominente. Después del 1 de mayo, el turismo rural atrajo mayor atención.
Originalidad/valor
En este documento, se utiliza el análisis del discurso para comprender el impacto de COVID-19 en el turismo urbano y rural desde la perspectiva de los nodos de tiempo y la relación entre los diversos interesados y se predice las tendencias de desarrollo dentro del turismo urbano y rural. Este trabajo enriquece y amplía el conocimiento de la gestión turística frente a las grandes crisis, brindando valiosos consejos a administradores e inversores, y hace sugerencias para el desarrollo del turismo urbano y rural.
Details
Keywords
Qi Xiong, Yalan Zheng, Ruitong Gu, Jun Wen and Zhiyong Li
This qualitative study explores how Chinese senior outbound tourists perceive support from their adult children and what kinds of support they desire.
Abstract
Purpose
This qualitative study explores how Chinese senior outbound tourists perceive support from their adult children and what kinds of support they desire.
Design/methodology/approach
Qualitative data were collected from semi-structured interviews with 26 participants. Transcribed interviews were analysed via thematic analysis.
Findings
This study captured the contradictory feelings of different types of Chinese senior outbound tourists (i.e. independent, neutral, and dependent) according to the degree of desire for support from their adult children. The results further identified the real desires among Chinese senior outbound tourists for children's attitudinal support, caring support, appropriate financial support, companionship, and timing support.
Research limitations/implications
Since this qualitative research is based on small samples with typical social and cultural characteristics, our research results only describe an existence. Our findings provide insight into the existence of the phenomenon, rather than allowing the results to be generalized to the wider population (Gram et al., 2019).
Practical implications
The tourism industry could develop products to alleviate such feelings. Integrating the concept of filial piety into adult children's support for their parents' overseas travel can not only meet parents' expectations but also relieve parents' ambivalence. Destination operators and travel agencies could thus design mixed products targeting Chinese elderly parents and their adult children by providing activities for both generations. Purchasing behaviour represents a type of emotional and instrumental support for the elderly. Destination operators and travel agencies can also launch products suitable for in-depth outbound travel that cater to adult children's leisure travel while meeting the elderly's travel needs.
Originality/value
This study also extends both intergenerational support theory and intergenerational ambivalence theory regarding Chinese senior outbound tourists.
Details
Keywords
Daoyu Hu, Zhuyong Li, Zhiyong Hong and Zhijian Jin
The purpose of this paper is to analyze the influence of different types of winding configurations on the distribution of leakage field and branch currents for a 330-kVA…
Abstract
Purpose
The purpose of this paper is to analyze the influence of different types of winding configurations on the distribution of leakage field and branch currents for a 330-kVA high-temperature superconducting (HTS) transformer winding.
Design/methodology/approach
A three-dimensional electromagnetic model coupled with a circuit model validated by an experiment is developed to calculate the leakage field and current uniformity under four different types of secondary winding configurations. The four types of gaps between secondary windings are uniform gap, arithmetic progression (AP) gap, six sections with three different gaps and eight sections with four different gaps. A coefficient named as uneven degree is used to define the current nonuniformity.
Findings
The simulation results show that the currents and leakage field of double pancakes (DPs) on both sides are larger than those of the other DPs, and the currents of several middle DPs are smaller than the average rated current with an ISOB gap and larger than the average rated current with an IBOS gap. For any one of the four types of winding configurations, the type with the ISOB gap can prohibit the current nonuniformity more effectively, whereas the IBOS gap can decrease the leakage field more. The AP with the ISOB gap is a wise choice for decreasing the uneven degree and leakage field.
Practical implications
There is an optimal winding configuration for decreasing the leakage field and uneven degree of branch currents. The results and numerical model are very useful for the design of a HTS transformer.
Originality/value
The leakage field distribution and branch currents nonuniformity for 25 parallel DPs are investigated and optimized.
Details
Keywords
Longfei Song, Zhiyong Liu, Lin Lu, Xiaogang Li, BaoZhuang Sun and Huanlin Cheng
This paper aims to analyze a failure case of a P110 tube in a CO2 flooding well.
Abstract
Purpose
This paper aims to analyze a failure case of a P110 tube in a CO2 flooding well.
Design/methodology/approach
The chemical composition, microstructure and mechanical properties of the failed P110 tubing steel were tested, and met the API Spec 5CT standard. The fractures were investigated by scanning electron microscopy and energy dispersive spectroscopy.
Findings
Fracture was induced by stress corrosion cracking (SCC) and that the stress concentration caused by the mechanical damage played an important role in the failure. The failure case is a SCC failure affected by mechanical damage and galvanic corrosion.
Originality/value
The effect of the infiltration of groundwater was studied in the failure case. The stress concentration caused by the mechanical damage played an important role in the failure.
Details
Keywords
Shi Chen, Zhiyong Han, Qiang Zeng, Bing Wang, Liming Wang, Liuyang Guo and Yimin Shao
Hydro-viscous drive (HVD) clutches are widely used in equipment requiring soft start, such as fans and pumps, to transmit torque and adjust speed by changing the gap distance…
Abstract
Purpose
Hydro-viscous drive (HVD) clutches are widely used in equipment requiring soft start, such as fans and pumps, to transmit torque and adjust speed by changing the gap distance between friction pairs. This paper aims to propose a novel two-parameter evaluation method for HVD during the mixed lubrication stage. The objective is to develop an effective model that establishes the relationship between these parameters and the actual surface topography.
Design/methodology/approach
In the presented methods, the fractal features of the real manufacturing surface are calculated based on the power spectrum function by the ultra-depth three-dimensional microscope. After that, the hybrid friction model of the friction plate is established based on mixed elasto-hydrodynamic lubrication theory, boundary friction model and fractal theory. Then the torque and load bearing characteristics of the clutch are obtained, and the influences of the surface fractal features are investigated and discussed. Finally, the Weierstrass–Mandelbrot function is adopted for the surface topography characterization and evaluation.
Findings
The results indicate that the proposed method exhibits good accuracy, while the speed difference between the friction pair exceeds 2,500 rpm. It is concluded that this paper proposed a way to evaluate the torque and loading capacity of HVD considering the real manufacturing surface topography and is helpful for surface optimization.
Originality/value
The originality and value of this study lie in its development of a novel torque and load bearing capacity evaluation method for HVD in mixed lubrication stage, considering manufacturing surface topography and describing the real manufacturing surface.
Details
Keywords
Zhiyong Zeng, Xiaoliang Jin and Rongxiang Zhao
The model for digitally controlled three-phase pulse width modulation (PWM) boost rectifiers is a sampled data model, which is different from the continuous time domain models…
Abstract
Purpose
The model for digitally controlled three-phase pulse width modulation (PWM) boost rectifiers is a sampled data model, which is different from the continuous time domain models presented in previous studies. The controller, which is tuned according to the model in continuous time domain and discretized by approximation methods, may exhibit some unpredictable performances and even result in unstable systems under some extreme situations. Consequently, a small-signal discrete-time model of digitally controlled three-phase PWM boost rectifier is required. The purpose of this paper is to provide a simple but accurate small-signal discrete-time model of digital controlled three-phase PWM boost rectifier, which explains the effect of the sampling period, modulator and time delays on system dynamic and improves the control performance.
Design/methodology/approach
Based on the Laplace domain analysis and the waveforms of up-down-count modulator, the small signal model of digital pulse width modulation (DPWM) in the Laplace domain is presented. With a combination of state-space average and a discrete-time modeling technique, a simplified large signal discrete time model is developed. With rotation transformation and feed-forward decoupling, the large-signal model is decoupled into a single input single output system with rotation transformation. Then, an integrated small signal model in the Laplace domain is constructed that included the time delay and modulation effect. Implementing the modified z-transform, a small-signal discrete-time model is derived from the integrated small signal model.
Findings
In a digital control system, besides the circuit parameters, the location of pole of open-loop transfer function is also related to system sampling time, affecting the system stability, and the time delay determines the location of the zero of open-loop transfer function, affecting the system dynamic. In addition to the circuit parameters discussed in previous literature, the right half plane (RHP) zero is also determined by the sampling period and the time delay. Furthermore, the corner frequency of the RHP zero is mainly determined by the sampling period.
Originality/value
The model developed in this paper, accounting for the effect of the sampling period, modulator and time delays on the system dynamic, give a sufficient insight into the behavior of the digitally controlled three-phase PWM rectifier. It can also explain the effect of sampling period and control delay time on system dynamic, accurately predict the system stability boundary and determine the oscillation frequency of the current loop in critical stable. The experimental results verify that the model is a simple and accurate control-oriented small-signal discrete-time model for the digitally controlled three-phase PWM boost rectifier.