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This study aims to optimize the preparation conditions and modify the nanofiltration (NF) membranes to prepare high-performance polysulfone/sulfonated polysulfone composite nanofiltration (PSF/SPSF-NF) membranes through interfacial polymerization.

Investigating the impacts of anhydrous piperazine (PIP) concentration, trimesoyl chloride (TMC) concentration and basement membrane type on NF membrane performance, the optimal membrane was prepared. In addition, nano-SiO₂ was added to the active separation layer to modify the NF membranes.

The comprehensive performance of PSF/SPSF-NF membranes was optimized when the concentration of PIP was 0.75 Wt.% and the concentration of TMC was 0.15 Wt.%, at which time the water flux was 66.1 L·m⁻²·h⁻¹ and the retention rate of Na₂SO₄ was 98.1%. The comprehensive performance of polysulfone/sulfonated polysulfone-SiO₂ nanofiltration (PSF/SPSF-SiO₂-NF) membranes was optimized when the blending ratio of nano-SiO₂ to PIP was 2:3, with a pure water flux of 81.9 L·m⁻²·h⁻¹ and a Na₂SO₄ retention rate of 95.9%. Compared to polysulfone nanofiltration (PSF-NF) membranes and PSF/SPSF-NF membranes, NF membranes with nano-SiO₂ increased the flux recovery rate by 22.9% and 8.7%.

PSF/SPSF-SiO2-NF membrane exhibits excellent antifouling properties.

There is currently no literature available on the preparation of NF membranes using polysulfone/sulfonated polysulfone (PSF/SPFS) as a substrate. This provides a method for modifying NF membranes, starting with the modification of the basement membrane and then modifying the active separation layer.

This paper aims to improve the permeability and antifouling of polysulfone (PSF) ultrafiltration membranes, the PSF matrix was modified by incorporating sulfonated polysulfone (SPSF).

Systematic investigations were conducted on the synergistic effects of a pore-forming agent, coagulation bath temperature and SPSF doping in the casting solution on blended ultrafiltration membranes. The chemical composition of the membranes was analyzed using Fourier transform infrared spectroscopy. The morphology and surface roughness of the membranes were characterized using scanning electron microscopy and atomic force microscopy. The hydrophilicity of the membrane surface was analyzed using a contact angle meter. The permeability and antifouling properties of the blended membranes were also investigated through filtration experiments.

The results indicated that the blended ultrafiltration membranes demonstrated an optimal overall performance when PVP-K30 content was 5.0 Wt.%, coagulation bath temperature was 30°C and SPSF content was 2.4 Wt.%. In comparison to a pure PSF ultrafiltration membrane, there was a significant increase in pure water flux (390.7 L·m⁻²·h⁻¹) by 2.2 times, while bovine serum albumin retention slightly decreased to 93.8%. In addition, the flux recovery rate improved by 2.1 times (71.4%) compared to that of the original PSF ultrafiltration membrane.

The method provided a simple and practical solution for improving the antifouling and permeability of PSF ultrafiltration membranes.

SPSF was anticipated to serve as an excellent modification additive for the preparation of ultrafiltration membranes with superior properties.

Using Hofstede’s cultural value model, the purpose of this paper is to investigate how Chinese employees’ cultural values differ according to firm ownership type such as state-, privately, and US-owned firms.

Data were collected from 367 Chinese employees working at firms located in Beijing.

Results showed that while Chinese employees in state-owned firms scored the highest in collectivism, those working at privately and US-owned firms scored higher for individualism. The score for long-term orientation was also higher in state-owned firms than in privately and US-owned firms. However, contrary to the expectation, the scores for Chinese employees for power distance in state-owned firms were lower than in the others, while the scores for masculinity in state-owned firms were higher than for the others. Chinese employees in all three types of firms showed lower scores than reported in previous studies for uncertainty avoidance.

This study contributes to a deepened understanding of how the cultural values of Chinese employees differ depending on firms’ ownership types, with significant implications for managers, who do business in China as they seek to establish management practices more closely aligned with the cultural values of Chinese employees.

This study may be the first attempt to examine how Chinese cultural values differ according to various ownership types. It suggests that Chinese employees at privately and US-owned firms have different cultural values from employees at state-owned firms, even though all three groups of employees are Chinese.

This research investigates when and how brands influence attribute importance weights. Most past studies modelling consumer decision processes treated the brand of a product as an attribute parallel to the price, color or size of a product, and as a result, those studies assigned an equal (i.e. non-contingent) importance weight across brands for each attribute. In contrast, this study introduces a brand-contingent attribute-weighting process, in which brand is a higher-order construct that influences attribute importance.

This study presents a multi-level choice model in which the importance weight of an attribute can vary across brands. This study then estimates the model using real purchase data and survey data from an airline industry.

This study finds that attribute importance weights are contingent upon two aspects of a brand – the perceived relative position of the brand and consumers’ brand usage experiences. Specifically, when consumers perceive a brand to be inferior to its competitors in a given attribute, they generally place greater weight on that attribute for that brand. In contrast, when consumers perceive a brand to be superior to its competitors in a given attribute, only consumers with extensive brand usage experiences place greater weight on that attribute for that brand.

The findings provide managerial insights on brand positioning and segmentation strategies using consumers’ brand usage experiences.

This study advances the literature on consumer decision processes by modeling an attribute-weighting process that is contingent upon brands. The present study models this process based on consumer behavior theories and estimates the model using real market data.

This paper aims to provide an overview of applications of medical rapid prototyping (MRP)-assisted customized surgical guides (CSGs) and shows the potential of this technology in complex surgeries. This review paper also reports two case studies from open literature where MRP-assisted CSGs have been successfully used in complex surgeries.

Key publications from the past two decades have been reviewed.

This study concludes that the use of MRP-assisted CSGs improves the accuracy of surgery. Additionally, MRP-assisted CSGs make the surgery much faster, accurate and cheaper than any other technique. The outcome based on literature review and two case studies strongly suggested that MRP-assisted CSGs might become part of a standard protocol in the medical sector to operate the various complex surgeries, in the near future.

Advanced technologies like radiology, image processing, virtual surgical planning (VSP), computer-aided design (CAD) and MRP made it possible to fabricate the CSGs. MRP-assisted CSGs can easily transfer the VSP into the actual surgery.

This paper is beneficial to study the development and applications of MRP-assisted CSGs in complex surgeries.

Drawing from conservation of resources theory, the purpose of this paper is to investigate the relationship between employees’ job satisfaction and helping behaviour, and, particularly, how it may be moderated by two personal resources (work meaningfulness and collectivistic orientation) and one organisational resource (organisational support).

Quantitative data were collected from a survey administered to employees and their supervisors in a Pakistani-based organisation.

The usefulness of job satisfaction for stimulating helping behaviour is greater when employees believe that their work activities are meaningful, emphasise collective over individual interests, and believe that their employer cares for their well-being.

The results inform organisations about the circumstances in which they can best leverage employees’ positive job energy, which arises from their job satisfaction, to encourage their voluntary assistance of other organisational members.

This study extends research on positive work behaviours by examining the concurrent roles that job satisfaction and several contingent factors play in promoting employee helping behaviour. In particular, it highlights the invigorating effects of these factors on the usefulness of the enthusiasm that employees feel about their job situation for increasing their willingness to extend help to other members, on a voluntary basis.

The purpose of the study is to investigate the financing channels and carbon emission abatement preferences of supply chain members, and further examine the optimal contract design of the retailer.

This paper develops a low-carbon supply chain composed of one retailer and one manufacturer, in which the retailer provides trade credit to the manufacturer. Considering the cap-and-trade regulation, the manufacturer with uncertain yield makes decision on whether to invest in emission abatement. There are bank loan and trade credit to finance production for the manufacturer and green credit to finance emission abatement investment. Meanwhile, the retailer may provide the manufacturer with three kinds of contracts to improve emission abatement efficiency, namely, revenue sharing, cost sharing or both sharing.

The results show that the retailer prefers to offer financing service at lower interest rate, but trade (and green) credit financing is always optimal for manufacturer and supply chain. The investment in emission abatement is value-added to all players. The sharing contracts offered by the retailer at lower sharing ratios can realize Pareto improvement of the system regardless of the financing scheme. However, comparing with the revenue or cost sharing contract, the existence of optimal sharing ratios makes the both sharing contract more favorable to the retailer.

The findings provide guidance for the emission-dependent manufacturer in financing and emission abatement decisions, as well as recommendations for the retailer to offer loan service and sharing contract.

This paper integrates green credit into bank loan or trade credit to analyze the financing decision of the manufacturer with uncertain yield and further considers the influence of three kinds of sharing contracts introduced by the retailer on improving operational performance.

The purpose of this paper is to examine different types of organization of the firm considering the innovation capabilities of manufacturing firms.

The authors carried out an innovation survey with Brazilian manufacturing firms. A sample of 1,156 firms was analyzed in this paper. Collected data were analyzed using multivariate data analysis techniques. From an innovation capabilities approach, it was possible to identify different types of organization of the firm.

Results show four different types of organization of the firm: advanced, intermediate and basic stability-oriented and change-oriented. Each type presents a different innovation capabilities arrangement. The successful strategies toward innovation are related to change-oriented organization of the firm and advanced stability-oriented organization of the firm.

This study contributes to the literature by presenting a different view on the organization of the firm, encompassing the capabilities approach and thus a higher level on the perception of firms' heterogeneity. This study contributes to narrow the literature gap on how firms internally coordinate its different capabilities into a coherent organization to sustain an innovative behavior.

These straightforward findings can serve as a guideline so that managers can conduct changes within their companies toward more innovation. Managers can reconsider its organization as a way to foment innovation, once it is identified as a key strategy for competitiveness.

This study may help managers understand that focusing on stability-driven capabilities is riskier if change-driven capabilities are not present in an adequate and aligned level of development. The outcome may be the growth of the cost structure greater than the potential return. Conversely, managers should also understand that once change-driven capabilities are in a glance, they need do follow up with stability-driven capabilities. Here, the risk is not having an adequate structure to sustain the upcoming growth, arising from innovation. In short, not only “cost and value” should be taken together, but they must be arranged following the specific situation of the company. Every company should manage costs either to sustain new added value or to allow the addition of new value.

The study is based on a unique dataset that traces a large set of companies, being able to check different types of firm organization and associate it with innovation capabilities. The study relates to an emerging economy, which has not received adequate attention until now, largely because of the lack of micro-level data. The study is based on a robust theoretical model of innovation capabilities, which is being tested through such data. Finally, results elucidate ways to improve innovation performance of firms.

The purpose of this study is to examine the effect of perceived justice and consumer's moral judgment of a service failure on recovery outcomes.

The research model is examined by adopting a field study approach followed by an experiment. The SPSS program with the PROCESS tool was used to analyze the simple moderation and moderated mediation effects.

The research findings show that consumer's moral judgment of a service failure moderates the relationship between service recovery (psychological compensation vs monetary compensation) and recovery outcomes (recovery satisfaction, negative word of mouth and repurchase intention). Moreover, the conditional indirect effect of service recovery on recovery outcomes through perceived justice is significant when service failure is seen as less moral. Specifically, consumers report lower perceived justice and react negatively to recovery measures when service failure is seen as less moral. In contrast, when consumers perceive a service failure as moral, a psychological compensation outperforms a monetary compensation, lessening negative word of mouth (NWOM).

These findings provide important insights into recovery measure development when considering consumer moral perspectives.

Project work usually has a positive connotation and is considered innovative and modern. However, many project workers suffer from chronic stress, work overload and burnout. This study aims to integrate the determinants of the negative aspects of project work and their implications for individuals involved in projects.

A systematic review was used to analyze 290 papers from various disciplines to identify the most used theories, determinants of the negative aspects of project work and the consequences of these aspects for project participants' work-related and overall well-being.

Based on the findings of the review, this paper develops a multi-level framework that includes determinants at the levels of society, organizations, projects and individuals and discusses opportunities for further research. The findings show that socio-psychological theories and occupational health theories are the dominant theories used in research. The most frequently studied individual outcomes are affective symptoms and work-related outcomes. Detrimental individual outcomes are mostly associated with psychosocial work factors.

The study contributes to the literature by providing a comprehensive review of research on the negative aspects of project work and their implications for project workers. The multi-level framework can serve as a guide for future research and provides important insights for practitioners.