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This paper aims to conduct a meta-analysis to explore the strength of the path relationship in the proposed model for online travel service adoption and the moderating effect of country or regional economic development level.

A meta-analysis was conducted based on 46 empirical studies to verify a proposed model for users’ intention to adopt online travel service.

The relationship between technology acceptance model and theory of planned behavior variables was found to be valid for online travel scenarios; moreover, perceived trust positively correlated with attitude and adoption intention. Meanwhile, personal innovation, perceived enjoyment and cost-effectiveness positively correlated with adoption intention. Except for the correlations between subjective norms and adoption intention, the correlations between all other variables in the model were significantly moderated by the economic development level of a country or region.

This paper was conducted to obtain a unified conclusion about the research field of online travel service adoption. To the best of the authors’ knowledge, its content is original.

本研究旨在探讨所提出的在线旅游服务采用模型中路径关系的强度以及国家或地区经济发展水平的调节作用。

本论文基于 46 项实证研究进行了荟萃分析, 以验证所提出的用户采用在线旅游服务意愿的模型。

技术接受模型和计划行为理论中不同变量之间的相关性在在线旅游服务场景中依然显著。对在线旅游场景有效; 此外, 感知信任与态度和采用意愿呈正相关。同时, 个人创新、感知享受和成本效益与采用意愿正相关。除了主观规范与采用意愿之间的相关性外, 模型中所有其他变量之间的相关性均受到国家或地区经济发展水平的显着调节。

本文旨在就在线旅游服务采用的研究领域获得一个统一的结论。本研究的内容是原创的。

：在线旅游服务; 采用意向; 影响因素; 荟萃分析

The objective of this study is to investigate the feasibility of using selective laser melting (SLM) process to print fine capillary wick porous structures for heat pipe applications and clarify the interrelations between the printing parameters and the structure functional performance to form guidelines for design and printing preparation.

A new toolpath-based construction method is adopted to prepare the printing of capillary wick with fine pores in SLM process. This method uses physical melting toolpath profile with associated printing parameters to directly define slices and assemble them into a printing data model to ensure manufacturability and reduce precision loss of data model transformation in the printing preparation stage. The performance of the sample was characterised by a set of standard experiments and the relationship between the printing parameters and the structure performance is modeled.

The results show that SLM-printed capillary wick porous structures exhibit better performance in terms of pore diameter and related permeability than that of structures formed using traditional sintering methods, generally 15 times greater. The print hatching space and infilling pattern have a critical impact on functional porosity and permeability. An empirical formula was obtained to describe this impact and can serve as a reference for the design and printing of capillary wicks in future applications.

This research proves the feasibility of using SLM process to printing functional capillary wicks in extremely fine pores with improved functional performance. It is the first time to reveal the relations among the pore shapes, printing parameters and functional performance. The research results can be used as a reference for heat pipe design and printing in future industrial applications.

The purpose of this study is to provide the reader with a full study of the bat algorithm, including its limitations, the fields that the algorithm has been applied, versatile optimization problems in different domains and all the studies that assess its performance against other meta-heuristic algorithms.

Bat algorithm is given in-depth in terms of backgrounds, characteristics, limitations, it has also displayed the algorithms that hybridized with BA (K-Medoids, back-propagation neural network, harmony search algorithm, differential evaluation strategies, enhanced particle swarm optimization and Cuckoo search algorithm) and their theoretical results, as well as to the modifications that have been performed of the algorithm (modified bat algorithm, enhanced bat algorithm, bat algorithm with mutation (BAM), uninhabited combat aerial vehicle-BAM and non-linear optimization). It also provides a summary review that focuses on improved and new bat algorithm (directed artificial bat algorithm, complex-valued bat algorithm, principal component analyzes-BA, multiple strategies coupling bat algorithm and directional bat algorithm).

Shed light on the advantages and disadvantages of this algorithm through all the research studies that dealt with the algorithm in addition to the fields and applications it has addressed in the hope that it will help scientists understand and develop it.

As far as the research community knowledge, there is no comprehensive survey study conducted on this algorithm covering all its aspects.