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The purpose of this paper is to investigate a light-trapping structure based on Ag nanograting for amorphous silicon (a-Si) thin-film solar cell. Silver nanopillar arrays on indium tin oxide layer of the a-Si thin-film solar cells were designed.

The effects of the geometrical parameters such as nanopillar radius (R) and array period (P) were investigated by using the finite element simulation.

The optimization results show that the absorption of the solar cell with Ag nanopillar structure and anti-reflection film is enhanced up to 29.5 per cent under AM1.5 illumination in the 300- to 800-nm wavelength range compared with the reference cell. Furthermore, physical mechanisms of absorption enhancement at different wavelength range are discussed according to the electrical field amplitude distributions in the solar cells.

The research is still in progress. Further studies mainly focus on the performance of solar cells with different nanograting materials.

This study provides a feasible method for light-trapping structure based on Ag nanograting for a-Si thin-film solar cell.

This study is promising for the design of a-Si thin-film solar cells with enhanced performance.

Bumpless Cu/SiO₂ hybrid bonding, which this paper aims to, is a key technology of three-dimensional (3D) high-density integration to promote the integrated circuits industry’s continuous development, which achieves the stacks of chips vertically connected via through-silicon via. Surface-activated bonding (SAB) and thermal-compression bonding (TCB) are used, but both have some shortcomings. The SAB method is overdemanding in the bonding environment, and the TCB method requires a high temperature to remove copper oxide from surfaces, which increases the thermal budget and grossly damages the fine-pitch device.

In this review, methods to prevent and remove copper oxidation in the whole bonding process for a lower bonding temperature, such as wet treatment, plasma surface activation, nanotwinned copper and the metal passivation layer, are investigated.

The cooperative bonding method combining wet treatment and plasma activation shows outstanding technological superiority without the high cost and additional necessity of copper passivation in manufacture. Cu/SiO₂ hybrid bonding has great potential to effectively enhance the integration density in future 3D packaging for artificial intelligence, the internet of things and other high-density chips.

To achieve heterogeneous bonding at a lower temperature, the SAB method, chemical treatment and the plasma-assisted bonding method (based on TCB) are used, and surface-enhanced measurements such as nanotwinned copper and the metal passivation layer are also applied to prevent surface copper oxide.

In the present study, the thermal performance of engine radiator using conventional coolant and nanofluid is determined experimentally for the different flow rates. Further, the study implemented the Integrated Taguchi-GRA-PCA for optimising the heat transfer performance.

Nanofluids were prepared by taking ethylene glycol and water (25:75 by volume) with volume fraction of 0.01, 0.03 and 0.05% of TiO₂ nanopowder. Experimental Data were collected based on the design of experiments (DOE) L9 orthogonal array using Taguchi method. Statistical analysis via Grey relation analysis (GRA) and principal component analysis (PCA) were done to determine the role of experimental parameters on heat transfer coefficient and rate of heat transfer. Impact of three control factors, vol. % of TiO₂ concentration (φ), flow rate (LPH), and sonication time (min) on the performance characteristics on heat transfer coefficient and ratio of heat transfer rate is analysed to get the best combination of the parameters involved.

Analysis revealed the importance of parameters on heat transfer coefficient and can be sorted in terms of contributions from higher to lower degree. Finally, ANOVA test has been conducted to validate the effect of process parameters. The major controllable parameter is φ (concentration), contributing about 32.74%, then flow rate contributing 32.5% and finally sonication time showing small contribution of 18.57%.

A grey relational analysis integrated with principal component analyses (PCA) are implemented to get the optimum heat transfer coefficient and ratio of heat transfer rate. The novelty of the work is to adopt and implement the Integrated Taguchi-GRA-PCA first time for the purpose of thermal performance analysis of engine nano-coolant for radiator.

This investigation applied a hybrid method combining a trained artificial neural network (ANN) and the sequential quadratic programming (SQP) method to determine an optimal parameter setting for a reflow soldering process of ball grid array packages in printed circuit boards.

Nine experiments based on an orthogonal array table with three‐controlled inputs and average shear forces of solder spheres as a quality target were utilized to train the ANN and then the SQP method was implemented to search for an optimal setting of parameters.

The ANN can be utilized successfully to predict the shear force under different reflow soldering conditions after being properly trained and the identified optimal parameter setting are capable of striking the balance between the average shear forces and the manufacturing cycle time.

The reflow time and the peak temperature were found to be the most significant factors for the reflow process via analysis of variance.

This study provided an algorithm integrating a black‐box modeling approach (i.e. the ANN predictive model) with the SQP method to resolve an optimization problem. This algorithm offered an effective and systematic way to identify an optimal setting of the reflow soldering process. Hence, the efficiency of designing the optimal parameters was greatly improved.

The purpose of this paper is to improve static/dynamic characteristics of active-controlled hydrostatic journal bearing by using fractional order control techniques and optimizing algorithms.

Active lubrication has ability to overcome the unpredictable harsh environmental conditions which often lead to failure of capillary controlled traditional hydrostatic journal bearing. The research develops a mathematical model for a servo feedback-controlled hydrostatic journal bearing and dynamics of model is analyzed with different control techniques. The fractional-order PID control system is tuned by using particle swarm optimization and Nelder mead optimization techniques with the help of using multi-objective performance criteria.

The results of the current research are compared with previously published theoretical and experimental results. The proposed servo-controlled active bearing system is studied under a number of different dynamic situations and constraints of variable spindle speed, external load, temperature changes (viscosity) and variable bearing clearance (oil film thickness). The simulation results show that the proposed system has better performance in terms of controllability, faster response, stability, high stiffness and strong resistance.

This paper develops an accurate mathematical model for servo-controlled hydrostatic bearing with fractional order controller. The results are in excellent agreement with previously published literature.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2020-0272

Safety activities have been initiated in healthcare organizations in Taiwan, but little is known about the performance and trends of safety culture on a timely basis. This study aims to comprehensively review the articles that have conducted two worldwide patient safety culture instruments (HSPSC and SAQ) in Taiwan to provide the extent of existing knowledge about healthcare professionals' perception related to patient safety.

The Web of Science, Medline (Pubmed) and Embas were used as the database to search papers related to the patient safety culture in Taiwan from 2008 to June 30, 2019.

Twenty-four relative articles in total were found and further investigations confirmed that the regular assessment of patient safety culture among hospital staff is essentially important for healthcare organizations to reduce the rates of medical errors and malpractice. Moreover, the elements influencing patient safety culture may vary due to the difference in job positions, age, experience in organization and cultural settings.

The summary of findings enables healthcare administrators and practitioners to understand key components of patient safety culture for continuous improvement in medical quality.

Assessing the safety culture in healthcare organizations is a foundation to achieve excellent medical quality and service. The implications of this study could be useful for hospitals to establish a safer environment for patients.

The COVID-19 pandemic has significantly affected how consumers make payment choices. This study aims to develop a comprehensive model explaining customers’ continuance usage of mobile payment during the COVID-19 pandemic by investigating both the pull (positive) factors of mobile payment and the push (negative) factors of cash payment.

A survey was conducted on 508 mobile payment users. A quota sampling method was applied to collect the data. Then, the data were analyzed using structural equation modeling. This study employed SPSS and LISREL software.

This study reveals that four antecedent factors: favorable attitude toward mobile payment, social influence, facilitating conditions and unfavorable attitude toward cash payment, positively affect the continuance intention to use mobile payment during the COVID-19 pandemic. The finding also corroborates the effect of continuance intention on the actual use of mobile payment.

This research provides valuable insights for formulating business strategies. The results indicate that mobile payment providers should not only consider the positive aspects of mobile payments but also the negative aspects of cash payment when encouraging the continuance usage of mobile payments to customers.

This study is among the first to empirically test the effect of unfavorable attitudes toward cash payment on the continuing use of mobile payment. Specifically, the research extends the unified theory of acceptance and use of technology by adding the push–pull-mooring model to enhance the explanatory power.

La pandemia de COVID-19 ha afectado significativamente a la forma en que los consumidores toman sus decisiones de pago. Este estudio pretende desarrollar un modelo completo que explique el uso continuado del pago por móvil por parte de los clientes durante la pandemia COVID-19, investigando tanto los factores de atracción (positivos) del pago por móvil como los factores de empuje (negativos) del pago en efectivo.

Se realizó una encuesta a 508 usuarios de pago por móvil. Se aplicó un método de muestreo por cuotas para recoger los datos. A continuación, los datos se analizaron mediante un modelo de ecuaciones estructurales. En este estudio se empleó el software SPSS y LISREL.

El estudio revela que cuatro factores antecedentes: la actitud favorable hacia el pago por móvil, la influencia social, las condiciones facilitadoras y la actitud desfavorable hacia el pago en efectivo; afectan positivamente a la intención de permanencia en el uso del pago por móvil durante la pandemia COVID-19. El hallazgo también corrobora el efecto de la intención de permanencia en el uso real del pago por móvil.

Esta investigación aporta valiosas ideas para la formulación de estrategias comerciales. Los resultados indican que los proveedores de pagos por móvil no sólo deben tener en cuenta los aspectos positivos de los pagos por móvil, sino también los aspectos negativos del pago en efectivo a la hora de fomentar el uso continuado de los pagos por móvil entre los clientes.

Este estudio es uno de los primeros en comprobar empíricamente el efecto de las actitudes desfavorables hacia el pago en efectivo en el uso continuado del pago por móvil. En concreto, la investigación amplía la teoría unificada de la aceptación y el uso de la tecnología (UTAUT) añadiendo el modelo push-pull-mooring (PPM) para mejorar el poder explicativo.

COVID-19疫情对消费者的支付方式产生了重大影响。本研究旨在通过研究移动支付的拉动（积极）因素和现金支付的推动（消极）因素, 建立一个综合模型来解释客户在COVID-19疫情期间持续使用移动支付的情况。

本研究采用配额抽样方法, 对508位移动支付用户进行了调查。然后通过SPSS和LISREL软件, 运用结构方程模型对数据进行了分析。

研究结果揭示了四个前因因素对COVID-19疫情期间持续使用移动支付的意愿有积极影响, 这四个因素分别是：对移动支付的有利态度、社会影响、便利条件和对现金支付的不利态度; 这一发现也证实了持续使用意愿对移动支付实际使用的影响。

这项研究为制定商业战略提供了宝贵的见解。结果表明, 移动支付供应商在鼓励客户持续使用移动支付时, 不仅要考虑移动支付的积极方面, 还要考虑现金支付的消极方面。

本研究首次通过实证检验了消费者对现金支付的不利态度对移动支付持续使用的影响。具体而言, 本研究通过加入推拉式模型（PPM）扩展了技术接受和使用的统一理论（UTAUT）, 从而增强了该理论的解释力。

The headlines of online news are created carefully to influence audience news selection today. The purpose of this paper is to investigate the relationships between news headline presentation and users’ clicking behavior.

Two types of unobtrusive data were collected and analyzed jointly for this purpose. A two-month server log file containing 39,990,200 clickstream records was obtained from an institutional news site. A clickstream data analysis was conducted at the footprint and movement levels, which extracted 98,016 clicks received by 7,120 headlines ever displayed on the homepage. Meanwhile, the presentation of these headlines was characterized from seven dimensions, i.e. position, format, text length, use of numbers, use of punctuation marks, recency and popularity, based on the layout and content crawled from the homepage.

This study identified a series of presentation characteristics that prompted users to click on the headlines, including placing them in the central T-shaped zones, using images, increasing text length properly for greater clarity, using visually distinctive punctuation marks, and providing recency and popularity indicators.

The findings have valuable implications for news providers in attracting clicks to their headlines. Also, the successful application of nonreactive methods has significant implications for future user studies in both information science and journalism.

The prime aim of this research is to examine the mediating effect of patient trust on the relationship between service quality and patient satisfaction in Amman, Jordan.

A convenience sample of patients visiting seven out of the 44 private hospitals in Amman was selected. In total, 385 questionnaires were distributed among patients, with a response rate of 91%. Of these, 35 were disregarded, and the data from the remaining 350 questionnaires were analyzed using SPSS.

The results showed that service quality has a statistically significant effect on patient satisfaction. Furthermore, service quality has a statistically significant effect on patient trust, while there is also a statistically significant effect of patient trust on patient satisfaction. The findings also revealed that patient satisfaction partially mediates the relationship between service quality and patient satisfaction.

Generating more insights in the areas of service quality, patient trust and patient satisfaction while also extending the findings of earlier studies. The prior studies in the literature that focus on customers are given a more advantageous perspective by using Jordanian hospitals as a population to test the model of this research. The majority of past research on service quality, patient satisfaction and patient trust in the healthcare sector has been conducted in western nations.

China has followed an unique transition from central planning to a market economy. The purpose of this paper is to examine how China's unique blend of capitalism and socialism has influenced Chinese firms’ market orientation.

Broadly speaking this paper's methodological approach can be described as a positivistic epistemology.

The paper provides insights into how Chinese institutions facilitate or hinder firms’ market orientation practices through direct effect, externality effect and indirect causal chains. The central theme is that, compared with other countries, China's unaltered political institutions and newly created market institutions have led to unique roles of coercive, normative and mimetic pressures in the diffusion of market orientation among Chinese firms. Especially, regulative institutions’ influence on other institutions is more salient in China than in many other countries.

A lack of primary data and empirical documentation and a lack of in‐depth treatment of some of the key issues are major limitations here.

The paper analyses institutional pressures facing firms operating in China and their variation across different types of firms. An understanding of these pressures is essential to devise market‐oriented approaches in the country. It also examines different institutional factors (e.g. Chinese professional associations) that influence a firm's capability to implement market‐oriented practices.

This paper's greatest value stems from the fact that it employs institutional theory as a lens to understand firms’ market orientation. The institutions‐market orientation nexus is a very important but highly underexamined subject.