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1 – 10 of 15Wei Guo, Honglin Liu and Chaoli Lan
Based on core description, gas logging and laboratory analysis, this paper aims to study the controlling effect of the types of shale sedimentary microfacies in coal formations…
Abstract
Purpose
Based on core description, gas logging and laboratory analysis, this paper aims to study the controlling effect of the types of shale sedimentary microfacies in coal formations over shale reservoirs using the example of Shanxi formation in Northern Ordos Basin.
Design/methodology/approach
According to core observation, the authors selected typical samples of rock types for thin section analysis to determine the micro features and compositions of rocks.
Findings
By using core observation, we found that fine lithology in Shanxi formation included major shale, carbonaceous shale, partially carbonaceous shale, partially silty shale and silty shale with colors of gray, dark gray, black and/or gray. Shanxi Formation shale are deposited in plant-rich and plant-poor swamps, interdistributary depressions of delta plains, interfluvial depressions of meandering rivers as well as microfacies environment of natural levees and the distal crevasse splay.
Originality/value
Currently, the research on the shale gas in Shanxi Formation in the Ordos Basin is still in its infancy. There is yet no research on the fine-grained partition of the sedimentary facies in coal accumulation environment of Shanxi formation and the controlling effect of sedimentary microfacies over shale reservoirs.
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Tao Liu, Weiquan Wang, Jingjun (David) Xu, Donghong Ding and Honglin Deng
This paper investigates the effects of advising strength of a recommendation agent on users' trust and distrust beliefs and how the effects are moderated by perceived brand…
Abstract
Purpose
This paper investigates the effects of advising strength of a recommendation agent on users' trust and distrust beliefs and how the effects are moderated by perceived brand familiarity.
Design/methodology/approach
A research model is evaluated using a laboratory experiment with 149 participants.
Findings
Results reveal that a strong advising tone leads to higher trust in terms of users' credibility and benevolence beliefs and lower distrust in terms of their discredibility beliefs (the trustor's concerns regarding the trustee's dishonesty and competence in engaging in harmful behavior) when perceived brand familiarity is high. By contrast, when brand familiarity is low, strong advising tone results in low trust in terms of users' credibility belief and high distrust in terms of their beliefs in discredibility and malevolence (concerns regarding the trustee's conduct in terms of a malicious intention that can hurt the trustor's welfare).
Originality/value
This paper contributes to the trust and distrust literature by studying how each of the dimensions of trust and distrust can be affected by an RA's design feature. It extends the attribution theory to the RA context by studying the moderating role of brand familiarity in determining the effects of the advising strength of an RA. It provides actionable guidelines for practitioners regarding the adoption of an RA's appropriate advising strength to promote different types of products.
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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 residentsâ.
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 residentsâ 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 residentsâ perceptions of touristsâ 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 residentsâ perceptions of Chinese tourists, contributes to the governmentâs formulation of guidelines for civilised tourism and has benefits to the sustainable development of tourism destinations.
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ćčŚ
目的
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设计/方法/方法
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结果
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独创性/价值
čżéĄšĺŽć§ç 犜埼襼äşĺşĺ˘ć 游čćŻä¸çŽçĺ°ĺą ć°ĺŻšć¸¸ĺŽ˘ĺ˝˘čąĄçćçĽç塎čˇ, ĺšśä¸äťĺą ć°çč§ĺşŚĺşĺ丰ĺŻäşç¤žäźčĄ¨čąĄç莺ĺ¨ć 游čĽéé˘ĺçĺşç¨ăĺŽä˝żćł°ĺ˝ĺą ć°ĺŻšä¸ĺ˝ć¸¸ĺŽ˘ç莤čŻć´ĺ çťč´, ćĺŠäşćżĺşĺśĺŽćé寚ć§çććć 游ć察ćšé, ćĺŠäşć 游çŽçĺ°ćŞćĽçĺŻćçťĺĺąă
PercepciĂłn de los residents tailandeses sobre el comportamiento de los turistas chinos
Objetivo
Por dĂŠcadas, Tailandia ha sido un principal destino tulĂstico 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 turĂstica de Tailandia. Esta investigaciĂłn tiene como objetivo comenzar con la percepciĂłn de los habitantes tailandeses para conocer una comprensiĂłn mĂĄs 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 imĂĄgenes positivas incluyen fiedad filial y amabilidad (por ejemplo, cuida a los ancianos y mantiene una estrecha conexiĂłn 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 ĂŠtias (por ejemplo, hace ruido fuerte y corta en lĂnea.) los hĂĄbitos 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 investigaciĂłn 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 aplicaciĂłn de la teorĂa de la representaciĂłn social en el campo de marketing turĂstico. Deja los habitantes tailanteses conocer a los turistas chinos mĂĄs detallada y ayuda al gobierno a desarrollar pautas especĂficas de turismo civilizado y es benificioso para el futuro desarrollo sostenible de los destinos turĂsticos.
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Yanyan Pu, Zongchao Yu, Fengqin Wang, Yiyuan Fu, Tao Yan and Honglin Cheng
The purpose of this study is to develop luminescence sensors for the detection of nitroaromatic compounds (NACs) and metal ions to protect human health and prevent environmental…
Abstract
Purpose
The purpose of this study is to develop luminescence sensors for the detection of nitroaromatic compounds (NACs) and metal ions to protect human health and prevent environmental pollution.
Design/methodology/approach
The composition and morphology of Eu-metal-organic frameworks (MOF) (1) were well characterized by powder X-ray diffraction, elemental analyses, Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The emission spectrum displays that 1 has significant characteristic emission bands of Eu(III) ions. The authors further investigated the fluorescence sensing performances of 1 to NACs and metal ions.
Findings
The results show that Eu-MOF (1) exhibits significant fluorescence quenching effect toward p-nitroaniline and Fe3+ ions with good stability and recyclability. This means that 1 can be used as a multifunctional sensing material for the detection of p-nitroaniline and Fe3+ ions.
Originality/value
The authors have successfully synthesized a fluorescence Eu-based sensing material under hydrothermal conditions. In addition, the fluorescence property and sensing performances for detecting NACs and metal ions were studied. The results suggest that 1 has highly selective fluorescence quenching toward p-nitroaniline and Fe3+ ions with not only high sensitivity and selectivity but also excellent stability and recyclability. Furthermore, this study has confirmed that the multifunctional MOF material is very useful in environment pollutantsâ detection and monitoring.
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Fujuan Tong, Wenxuan Gou, Lei Li, Zhufeng Yue, Wenjing Gao and Honglin Li
In order to improve the engine reliability and efficiency, an effective way is to reform the turbine blade tip conformation. The paper aims to discuss this issue.
Abstract
Purpose
In order to improve the engine reliability and efficiency, an effective way is to reform the turbine blade tip conformation. The paper aims to discuss this issue.
Design/methodology/approach
The present research provides several novel tip-shaping structures, which are considered to control the blade tip loss. Four different tip geometries have been studied: flat tip, squealer tip, flat tip with streamwise ribs and squealer tip with streamwise ribs. The tip heat transfer and leakage flow are both analyzed in detail, for example the tip heat transfer coefficient, tip flow and local pressure distributions.
Findings
The results show that the squealer seal and streamwise rib can reduce the tip heat transfer and leakage loss, especially for the squealer tip with streamwise ribs. The tip and near-tip flow patterns at the different locations of axial chord reflect that both the squealer seal and streamwise rib structure can control the tip leakage flow loss. In addition, the analysis of the aerodynamic parameters (the static pressure and turbine efficiency) also indicates that the squealer tip with streamwise ribs obtains the highest adiabatic efficiency with an increase of 2.34 percent, compared with that of the flat tip case.
Originality/value
The analysis of aerothermal and dynamic performance can provide a reference for the blade tip design and treatment.
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Wenyan Zhuo, Honglin Yang and Xu Chen
The purpose of this paper is to build a phase-type risk model with stochastic return on investment and random observation periods to characterize the ruin quantities under which…
Abstract
Purpose
The purpose of this paper is to build a phase-type risk model with stochastic return on investment and random observation periods to characterize the ruin quantities under which the insurance company may take effective investment strategies to avoid bankruptcy.
Design/methodology/approach
By the Markov property and Itoâs formula, this paper derives the integro-differential equations in which the interclaim times follow a phase-type distribution. Using the sinc method, this paper obtains the approximate solutions of the expected discounted penalty function. The numerical examples are given to verify the robustness of the proposed sinc method.
Findings
This paper discloses the relationship between the investment strategy and initial surplus level. The insurance company with a high initial surplus level prefers high risk portfolios to earn more profit. Contrarily, the insurance company would invest low risk portfolios to avoid bankruptcy. In addition, this paper shows that a short observation period would bring higher ruin probability.
Originality/value
The risk model is distinct in that a phase-type risk model is constructed with stochastic return on investment and random observation periods. These considerations in the risk model are in sharp contrast to the setting in which the stochastic return on investment is observed continuously. In practice, the insurance company only can periodically observe the surplus level to check the balance of the book. This setting, therefore, is difficult to adopt. This paper develops a sinc method to solve the approximate solutions of the expected discounted penalty function.
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Honglin Dong, Viktorija Asmolovaite, Nareen Marseal and Maryam Mearbon
Vitamin D deficiency is prevalent worldwide. This paper aims to investigate the vitamin D status and dietary intake in young university students.
Abstract
Purpose
Vitamin D deficiency is prevalent worldwide. This paper aims to investigate the vitamin D status and dietary intake in young university students.
Design/methodology/approach
Forty-one healthy students aged 18â29âyears from Coventry University UK were recruited during January-February 2019, including white Caucasians (n = 18), African-Caribbeans (n = 14) and Asians (n = 9). Plasma 25(OH)D concentrations were measured and dietary vitamin D intake was determined. Chi-square and simple linear regression were used to analyse the data.
Findings
The plasma 25(OH)D concentrations were (36.0âÂąâ22.2) nmol/L in all subjects, (46.5âÂąâ25.3) nmol/L in white Caucasians, (22.6âÂąâ7.4) nmol/L in African-Caribbeans and (37.4âÂąâ21.7ânmol/L) in Asians. The majority (85.7%) of African-Caribbeans were vitamin D deficient compared with 22.2% of white Caucasians and 33.3% of Asians (p = 0.001). Overweight/obese subjects showed a significant higher proportion of vitamin D deficiency (65%) than normal weight subjects (28.6%) (p = 0.04). The average dietary vitamin D intake in all subjects was (4.6âÂąâ3.9) Âľg/day. Only 12.1% of the subjects met the recommended dietary vitamin D intake of 10âÂľg/day. Dietary vitamin D intake (p = 0.04) and ethnicity (p = 0.01) were significant predictors of 25(OH)D levels and accounted for 13% and 18.5% of 25(OH)D variance, respectively.
Research limitations/implications
This small-scale study showed an alarmingly high prevalence of vitamin D deficiency among subjects from African-Caribbean origin during wintertime. Education programs and campaigns are urgently needed to fight the vitamin D deficiency in this population.
Originality/value
The targeted population were in a critical period of transition from adolescence toward adulthood involving in changes in behaviours and nutrition.
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Li‐Yueh Lee, Sou Veasna and Wann‐Yih Wu
This study aims to examine the significance of transformational leadership and social support for expatriate adjustment and performance. This study also extends relevant…
Abstract
Purpose
This study aims to examine the significance of transformational leadership and social support for expatriate adjustment and performance. This study also extends relevant literature on expatriate management to examine the relationships among transformational leadership, social support, expatriate adjustment, and expatriate performance through a mechanism taking into account the moderating roles of cultural intelligence and socialization experience.
Design/methodology/approach
The sample was collected from 156 expatriate managers of Taiwanese multinational company (MNC) subsidiaries operating in China. Structural equation modeling (SEM) in AMOS 21 and hierarchical regression in SPSS 19 were used to test eight research hypotheses.
Findings
The SEM results indicated that transformational leadership and social support make significant contributions to expatriate adjustment and performance. The moderating roles of socialization experience and cultural intelligence were also confirmed in this study.
Originality/value
This study extends a theoretical model of transformational leadership and social support to examine expatriate adjustment and performance based on social learning and social exchange theories. Using a specific Chinese context, the current paper highlights the value and necessity of crossâcultural adjustment for successful expatriation.
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Vardges Hovhannisyan and Serhat Asci
We seek to quantify the relationship between urbanization and economic growth in China using recent advances in econometric techniques.
Abstract
Purpose
We seek to quantify the relationship between urbanization and economic growth in China using recent advances in econometric techniques.
Design/methodology/approach
This study adopts a smoothed instrumental variables quantile regression (SIVQR) estimator to obtain consistent estimates of the effects of urbanization on economic growth in China. Our approach accounts for the differential impacts of urbanization across the conditional distribution of economic growth while allowing for an identification strategy that addresses the endogeneity of urbanization. Our main findings reveal that ignoring urbanization endogeneity leads to inconsistent estimates of urbanization effects. Further, we find a positive relationship between urbanization and growth resembling an inverted U-shape. This supports the hypothesis that the beneficial effects of urbanization intensify at initial stages while diminishing beyond a certain threshold, due perhaps to weakening scale economies.
Findings
Our main results indicate that the individual productivity gains brought by urbanization outweigh the negative effects thereof that impede productivity, thus contributing to the economic growth in China. Further, we find that ignoring differential impacts of urbanization underestimates the beneficial effects of urbanization for provinces whose quality of governance is in the vicinity of the center of quality distribution. Ignoring the endogeneity of urbanization generates inconsistent estimates of the elasticity of economic growth with respect to urbanization. Finally, we estimate an inverted U-shape resembling relationship between urbanization and growth.
Research limitations/implications
First, future studies would benefit from incorporating more data as provinces further east on the mainland become more urbanized and urbanization runs its course. Second, controlling the barriers to rural-urban mobility would contribute to the robustness of the estimated relationship between urbanization and growth once such data became available. Unveiling the impact of government-imposed barriers is key to designing optimal policies that help fuel economic growth in the country. Finally, future research could benefit from information on urbanization sources not considered here such as inter-provincial migration, as such data become publicly available.
Practical implications
Quantifying the beneficial effects of urbanization on economic growth can help guide the government in China to further fuel the growth through a set of relevant policy tools that promote urbanization.
Social implications
Rural-urban migration in China lays the groundwork for economic advancement in recipient cities and economies, as it may induce scale economies. This can benefit both the economy at large and the migrants.
Originality/value
The SIVQR estimator accounts for potential heterogeneous effects of urbanization across the entire conditional distribution of growth while allowing for an identification strategy that addresses the endogeneity of urbanization. An additional distinguishing feature of the current study is our use of the most recent novel, provincial-level data obtained from the National Bureau of Statistics of China. Our focus on a single country allows sidestepping issues arising from the inconsistency of the definition of urban across different countries while accounting for intra-country urbanization drivers intrinsic to China, such as natural features and geographic characteristics. Therefore, our approach has the potential to sidestep the bias resulting from the differences in mechanisms behind urbanization-growth relationships across different countries.
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Erfan Rezvani Ghomi, Saeideh Kholghi Eshkalak, Sunpreet Singh, Amutha Chinnappan, Seeram Ramakrishna and Roger Narayan
The potential implications of the three-dimensional printing (3DP) technology are growing enormously in the various health-care sectors, including surgical planning, manufacturing…
Abstract
Purpose
The potential implications of the three-dimensional printing (3DP) technology are growing enormously in the various health-care sectors, including surgical planning, manufacturing of patient-specific implants and developing anatomical models. Although a wide range of thermoplastic polymers are available as 3DP feedstock, yet obtaining biocompatible and structurally integrated biomedical devices is still challenging owing to various technical issues.
Design/methodology/approach
Polyether ether ketone (PEEK) is an organic and biocompatible compound material that is recently being used to fabricate complex design geometries and patient-specific implants through 3DP. However, the thermal and rheological features of PEEK make it difficult to process through the 3DP technologies, for instance, fused filament fabrication. The present review paper presents a state-of-the-art literature review of the 3DP of PEEK for potential biomedical applications. In particular, a special emphasis has been given on the existing technical hurdles and possible technological and processing solutions for improving the printability of PEEK.
Findings
The reviewed literature highlighted that there exist numerous scientific and technical means which can be adopted for improving the quality features of the 3D-printed PEEK-based biomedical structures. The discussed technological innovations will help the 3DP system to enhance the layer adhesion strength, structural stability, as well as enable the printing of high-performance thermoplastics.
Originality/value
The content of the present manuscript will motivate young scholars and senior scientists to work in exploring high-performance thermoplastics for 3DP applications.
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