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The study attempts to examine the impact of the US-China trade war on Vietnamese exports to the United States, which has consistently served as a key market for Vietnamese goods and services in recent decades. The heterogeneous effects of the trade war on different export sectors are also evaluated.

The secondary data on Vietnamese exports to the US at a 6-digit level is collected from UN Comtrade. Besides, the difference-in-differences (DiD) method is employed to analyze the impact of the trade war on exports from Vietnam to the United States.

The findings revealed a 14% increase in total Vietnamese exports to the United States due to the trade war. Examining heterogeneous effects, certain industries, such as plastics, iron or steel articles, textiles and garments, and machinery and mechanical appliances, experience significant benefits. However, the study did not identify statistically significant effects on other sectors, such as electrical machinery products, agricultural and forestry, and furniture.

The paper is one among limited studies considering the causal effects of the trade war on a developing country, accounting for the heterogeneous effects on different export sectors.

The purpose of this paper is to conceptually examine the phenomenon of wellness tourism under a holistic and systemic lens, focusing on the offer system and the main components necessary for the staging of wellness experiences. This approach to holistic wellbeing within the tourism sector has led to a broadening of the type of services and experiences that make up the value propositions that can positively contribute to people’s wellbeing.

This study identifies and defines the components of wellness tourism (including sectors not traditionally associated with it) through a review and analysis of the extant literature on “wellness tourism” and “wellbeing tourism” of the past two decades; the components were classified through an open coding process.

Wellness tourism, as a broad multidimensional concept, is composed by ten different components of the offer system: hot springs, spas, medical tourism, care of the body and mind, enogastronomy, sports, nature and environment, culture, spirituality and events. Each of these categories may represent a single touristic offer targeted to specific market segments, but they may also be one of several components within an integrated mix of tourism products proposed.

A holistic view of wellness tourism has implications for strategic marketing processes. Destination Management Organizations and company managers should segment their demand according to more innovative criteria than what has traditionally been adopted for wellness in terms of health care and medical procedures. Value propositions for tourists should be wellness-driven to satisfy the growing demand for wellness/well-being and should involve the participation of all the various actors and producers within the wellness tourism offer system at wellness destinations.

康养旅游及其组成元素：一个全方位的视角

此一论文会以全面和有系统的目光, 谈及康养旅游的现象, 并集中于康养旅游的供应系统和主要组成元素。此一以全面身心健康为目的的旅游行业, 使不同服务的覆盖范围和经验得以扩而充之, 提供有利条件正面地影响着人们的身心健康。

本研究会分辨和定义康养旅游的组成元素（以及其他在传统定义上被排除的行业）, 透过重新审视和分析近20年有关于康养旅游（Wellness tourism）和健康旅游（Wellbeing tourism）的现存文献。同时, 所有元素会以开放式译码 （open coding）来分类。

康养旅游, 作为一个多元概念, 基本上与十个不同的供应行业相关：温泉, 水療, 医疗旅游, 身心护理, 饮食, 运动, 自然环境, 文化, 灵修和特办活动。不同类别的行业可以在代表市场上不同供需关系的同时, 也可以代表供应上可以有一种混合套餐供应。

以全面的目光去看康养旅游可以为市场策略定下基础。目的地管理公司（DMO）和不同的公司经理应该在分辨服务需求的时候, 多采用新颖的标准, 摒弃只包括医疗的传统健康观念。为游客订立的价值主张（Value propositions）应以全面身心健康为主导, 以满足对康养（Wellness）和健康（Wellbeing）不断上升的需求; 亦应大力度地提升所有安康旅游工作人员与顾客的互动和参与。

El turismo de bienestar y los componentes de su sistema de oferta: una perspectiva holística

Este artículo examina conceptualmente el fenómeno del turismo de bienestar desde una perspectiva holística y sistémica, centrándose en el sistema de oferta y los principales componentes necesarios para la puesta en escena de experiencias de bienestar. Este enfoque de bienestar integral dentro del sector turístico ha propiciado una ampliación del tipo de servicios y experiencias que integran las propuestas de valor que pueden contribuir positivamente al bienestar de las personas.

Este estudio identifica y define los componentes del turismo de bienestar (incluidos los sectores no asociados tradicionalmente con él), a través de una revisión y análisis de la literatura existente sobre “turismo de bienestar” de las dos últimas décadas; los componentes se han clasificado mediante un proceso de codificación abierto.

El turismo de bienestar está compuesto conceptualmente por diez componentes diferentes de ofertas: aguas termales, spas, turismo sanitario, cuidado de cuerpo y mente, enogastronomía, deportes, naturaleza y medio ambiente, cultura, espiritualidad y eventos. Cada una de estas categorías puede representar una única oferta turística para segmentos de mercado específicos, pero también pueden ser uno de los varios componentes de una combinación integrada de productos turísticos.

Esta concepción holística del bienestar sugiere que, en el contexto de los procesos de marketing estratégico, las DMO y los gerentes de negocio deben segmentar la demanda con criterios innovadores respecto a los tradicionales de salud y médicos. Además, deben formular propuestas de turismo orientado al bienestar, valorizando los componentes de la oferta capaces de interceptar la creciente demanda de bienestar e implicando a los distintos productores del sistema de oferta de wellness que operan en los destinos de bienestar

The paper aims to explore the effect of stakeholder pressure on the disclosure of key performance indicators (KPIs) and the patterns of this disclosure in large public interest entities (PIEs).

The study is based on the content analysis of the disclosures provided by 169 large (PIEs) operating in Poland in 2019. The data was hand-collected from the companies’ non-financial statements. The research hypotheses were empirically tested with the use of linear regression.

The explanation for the disclosure of KPIs can be found in stakeholder theory, operationalized by stakeholder pressure linked to industry. In line with the expectations, business-related KPIs are disclosed by companies operating in industries with high pressure from investors, environment-related KPIs are presented by companies operating in environmentally sensitive industries and companies operating in industries with high pressure from employees disclose society-related KPIs. According to the results of the study, reporting on employee-related KPIs is accompanied by environmental and social KPI disclosures.

The study contributes to the literature on corporate non-financial disclosures as it provides new insights into non-financial KPI disclosures in a new and relatively unexplored institutional setting established by the Directive 2014/95/EU. While researchers recognize the stakeholders’ environmental and social concerns, there is nevertheless a lack of understanding of their implications for KPIs in measuring social practice. The research fills that gap by addressing the specific impact of different stakeholder groups on the disclosure of KPIs.

As an advanced manufacturing method, additive manufacturing (AM) technology provides new possibilities for efficient production and design of parts. However, with the continuous expansion of the application of AM materials, subtractive processing has become one of the necessary steps to improve the accuracy and performance of parts. In this paper, the processing process of AM materials is discussed in depth, and the surface integrity problem caused by it is discussed.

Firstly, we listed and analyzed the characterization parameters of metal surface integrity and its influence on the performance of parts and then introduced the application of integrated processing of metal adding and subtracting materials and the influence of different processing forms on the surface integrity of parts. The surface of the trial-cut material is detected and analyzed, and the surface of the integrated processing of adding and subtracting materials is compared with that of the pure processing of reducing materials, so that the corresponding conclusions are obtained.

In this process, we also found some surface integrity problems, such as knife marks, residual stress and thermal effects. These problems may have a potential negative impact on the performance of the final parts. In processing, we can try to use other integrated processing technologies of adding and subtracting materials, try to combine various integrated processing technologies of adding and subtracting materials, or consider exploring more efficient AM technology to improve processing efficiency. We can also consider adopting production process optimization measures to reduce the processing cost of adding and subtracting materials.

With the gradual improvement of the requirements for the surface quality of parts in the production process and the in-depth implementation of sustainable manufacturing, the demand for integrated processing of metal addition and subtraction materials is likely to continue to grow in the future. By deeply understanding and studying the problems of material reduction and surface integrity of AM materials, we can better meet the challenges in the manufacturing process and improve the quality and performance of parts. This research is very important for promoting the development of manufacturing technology and achieving success in practical application.

Vehicle fault diagnosis is a key factor in ensuring the safe and efficient operation of the railway system. Due to the numerous vehicle categories and different fault mechanisms, there is an unbalanced fault category problem. Most of the current methods to solve this problem have complex algorithm structures, low efficiency and require prior knowledge. This study aims to propose a new method which has a simple structure and does not require any prior knowledge to achieve a fast diagnosis of unbalanced vehicle faults.

This study proposes a novel K-means with feature learning based on the feature learning K-means-improved cluster-centers selection (FKM-ICS) method, which includes the ICS and the FKM. Specifically, this study defines cluster centers approximation to select the initialized cluster centers in the ICS. This study uses improved term frequency-inverse document frequency to measure and adjust the feature word weights in each cluster, retaining the top τ feature words with the highest weight in each cluster and perform the clustering process again in the FKM. With the FKM-ICS method, clustering performance for unbalanced vehicle fault diagnosis can be significantly enhanced.

This study finds that the FKM-ICS can achieve a fast diagnosis of vehicle faults on the vehicle fault text (VFT) data set from a railway station in the 2017 (VFT) data set. The experimental results on VFT indicate the proposed method in this paper, outperforms several state-of-the-art methods.

This is the first effort to address the vehicle fault diagnostic problem and the proposed method performs effectively and efficiently. The ICS enables the FKM-ICS method to exclude the effect of outliers, solves the disadvantages of the fault text data contained a certain amount of noisy data, which effectively enhanced the method stability. The FKM enhances the distribution of feature words that discriminate between different fault categories and reduces the number of feature words to make the FKM-ICS method faster and better cluster for unbalanced vehicle fault diagnostic.

This study aims to research the large cross-section tunnel stability evaluation method corrected after considering the thickness-span ratio.

First, taking the Liuyuan Tunnel of Huanggang-Huangmei High-Speed Railway as an example and taking deflection of the third principal stress of the surrounding rock at a vault after tunnel excavation as the criterion, the critical buried depth of the large section tunnel was determined. Then, the strength reduction method was employed to calculate the tunnel safety factor under different rock classes and thickness-span ratios, and mathematical statistics was conducted to identify the relationships of the tunnel safety factor with the thickness-span ratio and the basic quality (BQ) index of the rock for different rock classes. Finally, the influences of thickness-span ratio, groundwater, initial stress of rock and structural attitude factors were considered to obtain the corrected BQ, based on which the stability of a large cross-section tunnel with a depth of more than 100 m during mechanized operation was analyzed. This evaluation method was then applied to Liuyuan Tunnel and Cimushan No. 2 Tunnel of Chongqing Urban Expressway for verification.

This study shows that under different rock classes, the tunnel safety factor is a strict power function of the thickness-span ratio, while a linear function of the BQ to some extent. It is more suitable to use the corrected BQ as a quantitative index to evaluate tunnel stability according to the actual conditions of the site.

The existing industry standards do not consider the influence of buried depth and span in the evaluation of tunnel stability. The stability evaluation method of large section tunnel considering the correction of overburden span ratio proposed in this paper achieves higher accuracy for the stability evaluation of surrounding rock in a full or large-section mechanized excavation of double line high-speed railway tunnels.

The purpose of this paper is to artificially construct a functional surface with self-propulsion flow characteristics for the directional transportation of propellant in surface tension tanks.

In this study, a method to enhance the propulsion efficiency by using functional surfaces of self-propulsion performance was proposed. Superhydrophilic wedged-groove with the superhydrophobic background was fabricated and the self-propulsion capacity was verified.

It is found that the self-propulsion capacity is related to the divergence angle of the wedged-groove in the hydrophilic area, and the velocity of the droplets on the deflector plate is the largest with the divergence angle of 4°; the temperature gradient field formed by the condensing device at the nozzle can accelerate the droplet outflow from the tank.

Realization of this idea provides an accurate control strategy for the complex flow process of propellant in plate surface tension tanks, which could enhance the efficiency of the tension tank significantly.

The purpose of this paper is to analyze the leadership decisions taken during the crisis and their influence on the goals recognized by managers as crucial for surviving.

During the survey, conducted in April 2020 (one month after the first economic lockdown in Poland), as part of a research project called Sur(VIR)val – Survival during the virus, data was collected from 178 leaders from randomly selected companies from Poland using the CAWI method. Ordered logistic regression modeling was used to examine the impact of the decisions taken by company leaders on the goals seen by leaders as most important for company survival.

The results obtained in the study show that during the first Covid-19 lockdown in 2020, leaders made decisions that can be seen as oriented toward survival and continuity. Changing to remote working, extending payment deadlines for customers, as well as selective employment reduction turned out to have the greatest influence on strategic support for maintaining current production levels and retaining competent employees in order to survive the crisis.

This study has certain limitations. First, the list of leadership decisions and company goals used as dependent variables is not exhaustive. Second, the selection of business goals oriented toward survival may not derive directly from the lockdown situation. Third, our study did not measure the actual accomplishment of the company goals, but the managerial perceptions as to which ones are crucial for company survival during crises, and which of them should be given strategic support respectively. Fourth, the research sample was randomly constructed and covered only business organizations in Poland. Fifth, the hypotheses were formulated in a way that treated leadership decisions as one construct. Finally, we used survey, with a scale measuring managerial perceptions.

Leaders should ensure that proper IT tools are developed within the organization, and that the skill level of employees is high enough for fast shifting employees on to remote working. At the same time, it is important to maintain IT infrastructure at a high level. In terms of general recommendations for leaders, they should make quick decisions, maintain the most valuable resources of the company (human resources and cash flow) and take actions aimed at taking advantage of opportunities (R&D) during and after the crisis.

Additionally, due to the key importance of human resources for the survival of the organization, leaders should respond quickly by making flexible decisions about sending employees on leave and downtime. As human resources are the most valuable assets of the company from the point of view of its survival, decisions concerning employment reduction should be taken carefully. Leaders who acted in panic after the first lockdown and made employees redundant, later on had problems recruiting skilled employees back and strived to return to full organizational capacity.

Although scholars have investigated leadership decisions and actions taken during economic crises, little is known about how leaders behave when taken by surprise, and what decisions they make when the duration of a crisis is difficult to predict. The results of this study show which leadership decisions during the first Covid-19 lockdown in 2020 influenced prioritizing critical company goals oriented toward survival.