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This paper aims to study the influence of the addition of calcium nitrite on the passive films of rebar to reveal what causes calcium nitrite to further prolong the durability service life of the reinforced concrete structures.

A comprehensive experimental study of the passive films, such as components, surface morphologies, electric structure and compactness, was carried out in a saturated calcium hydroxide solution which is normally used to simulate concrete pore solution by using X-ray photoelectron spectroscopy, atomic force microscopy, Mott–Schottky and potentiostatic polarization, respectively.

The results showed that the passivation behavior of rebar has been changed dramatically by the addition of calcium nitrite. That is, the passive film formed in the solution with the addition of 10 g/L Ca(NO₂)₂ had less donor density (Nd), more positive plat potential, smoother surface and lower content of Fe_hydrox than that formed in the solution without Ca(NO₂)₂.

The study focuses on the passive films and provides a more clear cognition of the durability service life extension of the reinforced concrete structures caused by the addition of calcium nitrite.

This study aims to explore the effect of corrosion monitoring technology for ensuring concrete structure safety.

A new monitoring system scheme with unattended operation to evaluate the durability of concrete structures is presented, which includes four components, namely, a multi-function embedded sensor, a microprocessor data collecting module, a system data analysis and storage module, and a remote server module.

The system carries out monitoring of chloride ion concentration and pH in concrete, corrosion current density and of the self-corrosion potential of the reinforcing steel bar.

This system provides real-time, online, lossless monitoring for concrete structures.

Based on object–object congruity, this study aims to clarify the driving factors and antecedent mechanism of tourists’ willingness to purchase intangible cultural heritage (ICH)-souvenirs.

This study used a five-point Likert scale to collect data and proposed a structural equation model to explore this issue.

ICH-inheritor/souvenir-congruity is positively related to tourists’ purchase intention for ICH-souvenirs and perceived authenticity; perceived authenticity and brand identity play a chain mediating effect between ICH-inheritor/souvenir-congruity and the purchase intention for ICH-souvenirs.

This paper excludes individual, situational and cultural factors, ignoring the possible moderating roles of these factors. This treatment simplifies the feasibility of the present study but might lead to the deviation between the results of the current research and the actual outcomes.

The retailers of ICH-souvenirs should encourage the ICH-inheritors to endorse and promote their products while creating. They could tell a good story about their experience or create entertainment experiences for tourists through hand-in-hand teaching.

This study explores the driving factors and antecedent mechanism of tourists’ purchase intention for ICH-souvenirs from the third perspective of image congruity theory, namely, object–object congruity.

品：形象一致性与品牌对游客购买意向的影响

基于客-客一致性, 本研究旨在厘清游客购买非物质文化遗产纪念品的影响因素与驱动机制。

本研究利用5点式Likert量表收集数据, 并提出了一个结构方程模型来探讨这个问题。

非遗传承人/纪念品一致性正向显著影响非遗纪念品的购买意愿和本真性感知; 本真性感知和品牌认同在非遗传承人/纪念品一致性和非遗纪念品购买意愿之间起着链式中介作用。

本研究从形象一致性理论的第三个视角（客-客一致性）, 探讨了游客购买非遗纪念品的影响因素与驱动机制。

本研究进一步证明了客-客一致性的有效性和合理性, 拓宽了形象一致性理论的外延。

非遗纪念品的零售商应鼓励非遗传承人在创作的同时代言和推广他们的产品。他们可以讲述自己的经历, 或者通过手把手教学为游客创造娱乐体验。

本文排除了个人、情境和文化因素, 忽略了这些因素可能的调节作用。这种处理简化了当前研究的可行性, 但可能导致当前研究结果与实际结果之间的偏差。

la influencia de la consistencia de la imagen y la marca en la intención de compra de los turistas

Resumen

Basado en la congruencia objeto-objeto, el presente estudio busca esclarecer los factores impulsores y el mecanismo antecedente sobre la disposición de los turistas a adquirir recuerdos del PCI.

El presente estudio utiliza una escala de Likert de cinco puntos para recopilar datos y plantea un Modelo de Ecuaciones Estructurales (MEE) para estudiar este asunto.

La congruencia entre el heredero/recuerdo del PCI se relaciona de forma positiva con la intención de compra de recuerdos del PCI por parte de los turistas y con la autenticidad percibida; la autenticidad percibida y la identidad de marca ejercen un efecto mediador en cadena entre la congruencia entre el heredero/recuerdo del PCI y la intención de compra de recuerdos del PCI.

El presente estudio explora el mecanismo antecedente de la intención de compra de los turistas de recuerdos de PCI a partir de la tercera perspectiva de la teoría de congruencia de la imagen (la congruencia objeto-objeto).

El presente estudio justifica la validez y racionalidad de la congruencia objeto-objeto, extendiendo la teoría de la congruencia de imagen.

Los minoristas de los recuerdos del PCI deben fomentar que los herederos del PCI respalden y promocionen sus productos al mismo tiempo que los crean. Ellos pueden contar sus propias experiencias o crear experiencias entretenidas para turistas mediante la enseñanza mediante ejemplos.

El presente documento no tiene en cuenta los factores individuales, situacionales y culturales e ignora el posible papel moderador de estos factores. Dicho tratamiento simplifica la viabilidad de este estudio, aunque podría dar lugar a una desviación entre los resultados de la presente investigación y los resultados reales.

Many studies have proven that innovation performance is an important factor that increases corporate’s performance. In this context, companies need to be successful in innovation management, and they need to innovate. The technological turbulence that may occur in the sector where the companies are located will affect the innovation performance negatively if the companies fail to manage innovation. As a result of factors such as increasing competitive pressure with globalization, the elimination of time and space obstacles of technology, expanding purchasing alternatives, and increasing awareness levels, the newest products bring the highest revenues. These developments have led to a dramatic increase in the importance of developing new products as a competitive weapon, making product innovation an important element of the organizational strategy. Therefore, innovation strategies to be implemented and dynamic skills that are owned are needed to be managed correctly by companies. In this study, innovation management, technological turbulence, innovation strategies, and dynamic capabilities are examined.

China’s rural elderly care system faces significant challenges in addressing the needs of an ageing population, particularly in resource-limited areas. This study aims to critically examine the rural mutual aid elderly care model in China through the lens of active ageing principles. It explores how this model tackles elder care challenges in rural areas by emphasising health, participation and security, aiming to assess its effectiveness in reducing care costs while fostering self-reliance and mutual assistance.

A qualitative research methodology was used, focusing on document analysis to explore the rural mutual aid elderly care model within an active ageing framework. The study reviewed policy documents, academic literature and organisational records, using thematic analysis to understand the historical context, policy evolution and institutional support for this model.

The research identifies a significant shift from traditional passive care models to those grounded in active ageing principles. The rural mutual aid model, centring on health, participation and security, enables elderly individuals to engage in self-help and mutual assistance, thereby enhancing autonomy and reducing dependency. Key success factors include strong community networks and culturally resonant support systems. However, challenges such as resource limitations and regional disparities suggest areas for further improvement.

The reliance on document analysis may not fully capture the experiences of elderly participants or account for regional variations in the model’s implementation. Future research could incorporate mixed methods, including interviews or case studies, for a more nuanced understanding of elderly care in rural China. The findings emphasise the need for scalable and adaptable policies to enhance the model’s effectiveness and support culturally appropriate care strategies.

The research presents significant implications for policymakers and practitioners regarding the rural mutual aid elderly care model. It emphasises the need for scalable policies that address resource limitations and enhance community engagement to improve care effectiveness. Key implications include promoting financial and social sustainability by fostering self-reliance among older adults, prioritising active ageing initiatives to enhance quality of life and community cohesion and adopting localised strategies that consider regional disparities. Moreover, these findings offer a blueprint for other countries facing similar ageing challenges, advocating for a culturally sensitive and community-driven approach to elderly care across East Asia.

The study’s findings significantly impact how ageing is perceived and managed in rural Chinese communities. The shift from traditional, passive elderly care models to those grounded in active ageing principles reflects a societal transformation in valuing and supporting older adults. By promoting health, participation and security, the rural mutual aid elderly care model creates inclusive environments where the elderly actively contribute to their well-being and that of others. This approach challenges perceptions of ageing as a decline, fostering autonomy and meaningful engagement, ultimately reducing social isolation and enhancing cohesion through strengthened intergenerational relationships and shared responsibilities.

This study contributes to the literature by focusing on the rural mutual aid elderly care model in China through active ageing principles, addressing a notable gap in the non-Western application of these concepts. The findings offer valuable recommendations for policymakers and practitioners, emphasising community-driven approaches to ageing challenges in rural areas.

The purpose of this paper is to propose a method for selecting the position and attitude trajectory of error measurement to improve the kinematic calibration efficiency of a one translational and two rotational (1T2R) parallel power head and to improve the error compensation effect by improving the properties of the error identification matrix.

First, a general mapping model between the endpoint synthesis error is established and each geometric error source. Second, a model for optimizing the position and attitude trajectory of error measurement based on sensitivity analysis results is proposed, providing a basis for optimizing the error measurement trajectory of the mechanism in the working space. Finally, distance error measurement information and principal component analysis (PCA) ideas are used to construct an error identification matrix. The robustness and compensation effect of the identification algorithm were verified by simulation and through experiments.

Through sensitivity analysis, it is found that the distribution of the sensitivity coefficient of each error source in the plane of the workspace can approximately represent its distribution in the workspace, and when the end of the mechanism moves in a circle with a large nutation angle, the comprehensive influence coefficient of each sensitivity is the largest. Residual analysis shows that the robustness of the identification algorithm with the idea of PCA is improved. Through experiments, it is found that the compensation effect is improved.

A model for optimizing the position and attitude trajectory of error measurement is proposed, which can effectively improve the error measurement efficiency of the 1T2R parallel mechanism. In addition, the PCA idea is introduced. A least-squares PCA error identification algorithm that improves the robustness of the identification algorithm by improving the property of the identification matrix is proposed, and the compensation effect is improved. This method has been verified by experiments on 1T2R parallel mechanism and can be extended to other similar parallel mechanisms.

Constant or decreasing returns and increasing returns to scale are two kinds of mechanism in economic growth. The goal of supply-side structural reform is to promote the establishment of the mechanism with increasing returns to scale. The paper aims to discuss this issue.

This paper argues that the overall economic structure of the developing economy has been divided into the sector of constant or decreasing returns to scale and the sector of increasing returns to scale due to the dual economic structure. Among them, the supply-side structural reform is mainly to reduce the sector of decreasing returns to scale and increase the sector of increasing returns to scale. Based on the hypothesis of such two-sector economic structure in the supply side of developing economies and on the industrial data, this paper empirically tests the returns to scale of China’s supply structure. The result suggests that so far the sector of constant or decreasing returns to scale dominates the supply structure of China’s economic growth, which results in the state of decreasing returns to scale in China’s overall economy.

Therefore, to realize the long-term sustained growth and transformation of the development pattern of China’s economy, the authors must carry out the supply-side structural reform, vigorously develop the modern industrial sectors characterized by modern knowledge and technology, and promote the development of an innovation-driven economy.

Besides, the authors must accelerate the transformation from traditional industrial sectors to modern industrial sectors, actively promote China’s industrial structure toward rationalization and high gradation, as well as build a modern industrial system so as to facilitate the formation of the mechanism of increasing returns to scale and accelerate the transformation of the driving force of China’s economic growth.