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The purpose of this paper is to employ a fractional approach to predict the permeability of nonwoven fabrics by simulating diffusion process.

The method described here follows a similar approach to anomalous diffusion process. The relationship between viscous hydraulic permeability and electrical conductivity of porous material is applied in the derivation of fractional power law of permeability.

The presented power law predicted by fractional method is validated by the results obtained from simulation of fluid flow around a 3D nonwoven porous material by using the lattice-Boltzmann approach. A relation between the fluid permeability and the fluid content (filling fraction), namely, following the power law of the form, was derived via a scaling argument. The exponent n is predominantly a function of pore-size distribution dimension and random walk dimension of the fluid.

The fractional scheme by simulating diffusion process presented in this paper is a new method to predict wicking fluid flow through nonwoven fabrics. The forecast approach can be applied to the prediction of the permeability of other porous materials.

The current chapter is a tentative step toward investigating the allocation of advertising budget between the internet platform and the entity platform according to the long-term and short-term achievement of advertising investment. We provide a decision-making framework on how to allocate the advertising budget to the two platforms for the best results. The integrated effect of advertising investment consists of two parts. Goodwill and customer scale reflect the long-term achievement, and sale profit represents the short-term achievement. We selected some representative feasible investment plans as decision-making units (DMUs), and calculated the values of sale profit, goodwill, and customer scale as three outputs. To determine the best advertising investment plan, we use data envelopment analysis (DEA) model to seek efficient plans, and then determine the best one from those efficient plans through preference investigation and super-efficiency technique.

This paper aims to estimate the performance of the social security administration (SSA) in dealing with disability benefits applications in American.

The authors propose a multi-stage data envelopment analysis (DEA) method to analyze the efficiency of 167 hearing offices (HOs) to find the best performed HOs and inefficient ones and detect total improvement of inefficient and weak efficient offices.

The results show that totally 299,711 applications were processed and more applications will be processed if all offices can work efficiently. To the best of the authors’ knowledge, this paper is the first one to analyze the performance of SSA HOs using the multi-stage DEA method.

To the best of the authors’ knowledge, this paper is the first one to analyze the performance of SSA HOs using the multi-stage DEA method.

The purpose of this study is to explore the mechanisms underlying the transformation of records management (RM) to digital processes in the context of electronic records management systems (ERMS). The aim is to facilitate the evaluation of the long-term performance of ERMS and the effectiveness of the current standards.

Qualitative methods, such as participant observation and the constructivist grounded theory, were applied on a case of ERMS implementation in the Chinese public sector.

The results revealed that the application of transition-oriented ERMS would stimulate restructuring in the RM pattern and expectation on the functions of ERMS, with information quality underlying as a key challenging factor. The above-stated factors together drive the digital transformation of RM. A model for this mechanism is provided in the present study.

The selected case serves as an example for the cases that are not conditional on enforcing the electronic documents and RMS. As preliminary research, only one case has been studied here. However, it is possible to conduct other case studies to develop a further understanding of the transformation process.

The novelty of the present study is that it draws attention to the challenges encountered in moving RM towards digital transformation, by providing a theoretical foundation for developing sustainable evaluations of the ERMS and the associated current standards.

The contact behaviors of droplets on confined surfaces influence significantly their dynamics and morphological transition induced by the electric field. This paper aims to delve into the electric stress, electric field distribution, flow field and evolution of droplet neck to understand the underlying mechanisms.

Electrohydrodynamics of droplets in confined environment is numerically analyzed based on finite volume method (FVM) combining with volume-of-fluid (VOF) method for two-phase interface capturing. Numerical solutions are obtained through solving electrohydrodynamics model coupling fluid dynamics with electrostatics.

It was found that the droplet neck with high interfacial curvature undergoes different transition depending on the contact angle. At large domain height, the droplets on the surfaces with the contact angle of θ < 90° tend to break up into smaller droplets adhered on top and bottom surfaces. The detachment of droplets is identified when the contact angle is much greater than 90°. Notably, the droplets at θ = 90° exhibit asymmetrical shape evolution, but for other cases there is symmetrical shape of droplets during transition process. With decreasing the domain height, no obvious deformation through driving the contraction of the droplet neck is observed.

It remains unclear how the electric field parallel to the surfaces affects the shape transition and electrohydrodynamics of confined droplets when changing the contact angle. In this paper, the authors study the electrohydrodynamics of droplets in confined space when the electric field is exerted parallel to contact surfaces. In particular, the authors consider the effect of the surface wettability on the droplet deformation. The problem is solved through FVM combining with the VOF method to implement the capturing of two-phase interfaces. The results indicate that the electrohydrodynamic behaviors of droplets are sensitive to the contact properties of droplets on the surfaces, which has not been reported in previous works.

The purpose of this paper is to propose a deformable two-wheel-like mobile mechanism based on overconstrained mechanism, with the abilities of fast rolling and obstacle surmounting. The drive torque of the multi-mode motions is generated by self-deformation. Moreover, the analyses of feasibility and locomotivity of two mobile modes are presented.

The main body of the two-wheel-like mobile mechanism is a kind of centrally driven 4 R linkages. The mobile mechanism can achieve the capabilities of fast rolling and obstacle surmounting through integrating two mobile modes (spherical-like rolling mode and polyhedral-like obstacle-surmounting mode) and can switch to the corresponding mode to move or surmount obstacles. The mobility and kinematics of the mobile modes are analyzed.

Based on the results of kinematics analysis and dynamics analysis of the wheel-like mechanism, the spherical-like rolling mode has the capability of fast rolling, and the polyhedral-like obstacle-surmounting mode has the capability of surmounting different obstacle heights by two submodes (quasi-static obstacle-surmounting submode and dynamic obstacle-surmounting submode). The proposed concept is verified by experiments on a physical prototype.

The work presented in this paper is a novel exploration to apply bar linkages in the field of scout. The two-wheel-like mobile mechanism improves the torque imbalance of bar linkages by centrally driven method, removes the rear support structures of the traditional two-wheeled mechanisms by self-deformation and increases the height of obstacle surmounting by mode switching angle.

This paper aims to study the characteristics and evolution rules of tagging knowledge network for users with different activity levels in question-and-answer (Q&A) community represented by Zhihu.

A random sample of issue tag data generated by topics in the Zhihu network environment is selected. By defining user quality and selecting the top 20% and bottom 20% of users to focus on, i.e. top users and bot users, the authors apply time slicing for both types of data to construct label knowledge networks, use Q-Q diagrams and ARIMA models to analyze network indicators and introduce the theory and methods of network motif.

This study shows that when the power index of degree distribution is less than or equal to 3.1, the ARIMA model with rank index of label network has a higher fitting degree. With the development of the community, the correlation between tags in the tagging knowledge network is very weak.

It is not comprehensive and sufficient to classify users only according to their activity levels. And traditional statistical analysis is not applicable to large data sets. In the follow-up work, the authors will further explore the characteristics of the network at a larger scale and longer timescale and consider adding more node features, including some edge features. Then, users are statistically classified according to the attributes of nodes and edges to construct complex networks, and algorithms such as machine learning and deep learning are used to calculate large-scale data sets to deeply study the evolution of knowledge networks.

This paper uses the real data of the Zhihu community to divide users according to user activity and combines the theoretical methods of statistical testing, time series and network motifs to carry out the time series evolution of the knowledge network of the Q&A community. And these research methods provide other network problems with some new ideas. Research has found that user activity has a certain impact on the evolution of the tagging network. The tagging network followed by users with high activity level tends to be stable, and the tagging network followed by users with low activity level gradually fluctuates.

Research has found that user activity has a certain impact on the evolution of the tagging network. The tagging network followed by users with high activity level tends to be stable, and the tagging network followed by users with low activity level gradually fluctuates. For the community, understanding the formation mechanism of its network structure and key nodes in the network is conducive to improving the knowledge system of the content, finding user behavior preferences and improving user experience. Future research work will focus on identifying outbreak points from a large number of topics, predicting topical trends and conducting timely public opinion guidance and control.

In terms of data selection, the user quality is defined; the Zhihu tags are divided into two categories for time slicing; and network indicators and network motifs are compared and analyzed. In addition, statistical tests, time series analysis and network modality theory are used to analyze the tags.

The market segment of families with young children is significant for the cruise industry in China. This study aims to examine the cruise experience of them and facilitate the provision of family cruise vacation products and services.

This study collects online comments on the cruise experience of Chinese families with young children and analyzes the data in terms of text, sentiment and content.

The results of the text analysis indicate issues with several dimensions of the cruise experience. But the results of a sentiment analysis reveal that only 56.76% of the Chinese families with young children expressed positive feelings about cruise tourism. Almost one third (30.43%) expressed negative feelings, and the rest were neutral. In addition, by conducting a content analysis of the negative sentiment comments, this study identifies areas where cruise products and services need to be improved.

Cruise lines are advised to improve the provision of family cruise vacation products and services, such as enhancing physical experience elements, paying attention to human interaction and situational factors and caring for travelers’ personal needs.

This paper explores the cruise experience of Chinese families with young children, which is currently underdeveloped. A methodology approach including text analysis, sentiment analysis and content analysis is systematically applied to offer a holistic and deep understanding of travel experience. A framework for the cruise experience is proposed, which has theoretical and practical significance.

携儿童出游的中国家庭邮轮体验研究

摘要

有小孩的家庭细分市场对中国的邮轮行业来说意义重大。本研究旨在通过分析他们的邮轮体验, 提升家庭邮轮度假产品和服务的开发与运营。

本研究通过收集携儿童出游的中国家庭邮轮体验的相关在线评论, 对其从文本分析、情感分析和内容分析等方面对数据进行了分析。

文本分析的结果表明邮轮体验的若干维度上存在问题。但情感分析的结果显示, 只有56.76%的有小孩的中国家庭对邮轮体验表达出了积极情绪。近三分之一 (30.43%) 表达了负面情绪, 其余的则持中立态度。此外, 通过对负面情绪评论进行内容分析, 本研究提出了邮轮产品和服务需要提升的方向。

建议邮轮公司根据本研究的结果改进家庭邮轮度假产品和服务, 如增强身体体验元素, 关注人际互动和情境因素, 关心旅客的个性化需求等。

本文对目前尚没有进行充分探讨的携儿童出行的中国家庭的邮轮体验进行了分析, 为了更全面深入地理解邮轮旅行体验, 本研究系统地应用了包括文本分析、情感分析和内容分析等方法, 提出了邮轮体验的研究框架, 具有一定的理论和实践意义。

Experiencias vacacionales en crucero para familias chinas con niños pequeños

Resumen

El segmento de mercado de familias con niños pequeños es significativo para la industria de cruceros en China. Este estudio tiene como objetivo examinar la experiencia de crucero de este segmento, así como facilitar la oferta de productos y servicios de vacaciones familiares en crucero.

Este estudio recopila comentarios en línea sobre las experiencias de crucero en las familias chinas con niños pequeños, analizando los datos en términos de texto, sentimiento y contenido.

Los resultados del análisis del texto indican problemas con varias dimensiones de la experiencia del crucero. Pero los resultados del análisis de sentimientos, revela que solo el 56,76% de las familias chinas con niños pequeños expresaron sentimientos positivos sobre el turismo de cruceros. Casi un tercio (30,43%) expresó sentimientos negativos, y el resto fue neutral. Además, al realizar un análisis de contenido de los comentarios de sentimiento negativo, este estudio identifica áreas donde los productos y servicios de cruceros deben mejorarse.

Se recomienda a las líneas de cruceros que mejoren la oferta de productos y servicios vacacionales familiares, así como mejorar los elementos de la experiencia física, prestar atención a la interacción humana y los factores situacionales, y atender las necesidades personales de los viajeros.

Este trabajo explora la experiencia de crucero de las familias chinas con niños pequeños, que actualmente está poco desarrollada. Se aplica sistemáticamente un enfoque metodológico que incluye análisis de texto, análisis de sentimiento y análisis de contenido para ofrecer una comprensión holística y profunda de la experiencia de viaje. Se propone un marco para la experiencia del crucero, que tiene significado teórico y práctico.