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This paper aims to develop a bi-objective mixed integer non-linear programing model to optimize the supply chain networks consisting of raw material providers, final product manufacturers and distribution centers. Raw material substitution caused by varying raw material supply amounts, prices and carbon emissions and final product substitution due to different product prices and carbon emissions are considered.

The proposed model aims to achieve total profit maximization and total carbon emission minimization. The objective function of carbon emissions is converted into a maximization problem by changing minimum to maximum. The composite objective function is the weighted sum of the bias value of each objective function. The model is then solved using software Lingo12.

Numerical analysis results show that an increase in the number of alternate raw materials for original raw material helps improve supply chain network performance, and variation in that number causes detectable but not significant changes in downstream final product substitution results.

The major differences between this work and existing research are as follows: first, although previous research considered carbon emissions in supply chain network optimization, it has not considered the substitution effects of products or raw materials. This paper considers the substitution of both raw material and productions. Second, the item substitution considered by previous research is derived from inventory shortage or price difference of original items. However, the substitution considered in the present paper is a response to differences in purchase price, production cost and carbon emissions for items.

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.

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.

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.

While postdoctoral research (postdoc) training is a common step toward academic careers in science, technology, engineering and mathematics (STEM) fields, the role of postdoc training in social sciences is less clear. An increasing number of social science PhDs are pursuing postdocs. This paper aims to identify factors associated with participation in postdoc training and examines the relationship between postdoc training and subsequent career outcomes, including attainment of tenure-track faculty positions and early career salaries.

Using data from the National Science Foundation Survey of Earned Doctorates and Survey of Doctorate Recipients, this study applies propensity score matching, regression and decomposition analyses to identify the role of postdoc training on the employment outcomes of PhDs in the social science and STEM fields.

Results from the regression analyses indicate that participation in postdoc training is associated with greater PhD research experience, higher departmental research ranking and departmental job placement norms. When the postdocs and non-postdocs groups are balanced on observable characteristics, postdoc training is associated with a higher likelihood of attaining tenure-track faculty positions 7 to 9 years after PhD completion. The salaries of social science tenure-track faculty with postdoc experience eventually surpass the salaries of non-postdoc PhDs, primarily via placement at institutions that offer relatively higher salaries. This pattern, however, does not apply to STEM PhDs.

This study leverages comprehensive, nationally representative data to investigate the role of postdoc training in the career outcomes of social sciences PhDs, in comparison to STEM PhDs. Research findings suggest that for social sciences PhDs interested in academic careers, postdoc training can contribute to the attainment of tenure-track faculty positions and toward earning relatively higher salaries over time. Research findings provide prospective and current PhDs with information helpful in career planning and decision-making. Academic institutions, administrators, faculty and stakeholders can apply these research findings toward developing programs and interventions to provide doctoral students with career guidance and greater career transparency.

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.

The purpose of this paper is to test and explain the context where motivation to learn (MTL) reduces innovative behavior in the organizational context.

The authors used questionnaire survey to collect data in a field study. In order to test the moderating effect of transfer climate, MTL on the relationship between MTL and innovative behavior, a sample of 606 employees was analyzed to examine the theoretical expectation by using multiple regression and bootstrapping.

The authors found employees motivated to learn showed less innovative behavior when perceived transfer climate is less favorable. The authors further revealed that motivation to transfer mediates the moderating effect of transfer climate for the relationship between MTL and innovative behavior.

One suggestion for further research is to investigate the relationship among the four constructs by using multi-source, multi-wave and multi-level method.

This study provides several useful guidance of how organization and manager avoid the negative effects of MTL through encouraging employees to learn new knowledge and skills, and providing employee opportunities to use their acquired knowledge and skills.

The authors contribute to the motivational literature by taking a step further to understand the effect of MTL. The authors propose and confirm that employee MTL can lead to negative outcomes when individuals perceived transfer climate is low. The results offer new insight beyond previous findings on positive or non-significant relationship between MTL and innovative behavior. The results further show that this interactive effect is induced by motivation to transfer. Particularly, low transfer climate reduces individuals’ motivation to transfer, and individuals with high MTL have low innovative behavior when they are less motivated to transfer.

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.

The current paper aims to explore how brand coolness can mediate the relationship between tactical green marketing orientation (GMO) and willingness to pay (WTP), by exploring the differences between two global brands with opposite green marketing perceptions.

Based on the stimuli-organism-response (S-O-R) framework, the relation between tactical GMO, brand coolness and consumer's WTP is examined through a survey with 272 participants, who gave their perceptions about two different brands regarding their green orientations: British Petroleum (BP) and L'Oréal. The variable set was adapted and validated through focus group sessions.

Brand coolness is found to mediate the impact GMO on WTP and, for both brands, green marketing does affect the extent to which brands are perceived as cool by consumers. More importantly, evidence shows that only in the case of the “green brand” (e.g. L'Oréal), the impact on WTP is significant, which offers new implications regarding the outcomes of companies' pro-environmental policies.

This study is the first to investigate the outcomes of GMO over consumer's intentions (WTP) and the role of brand perceptions (coolness). The effects are compared between two global brands, with significantly different perceptions on their environmental sustainability.