Search results

The purpose of this study is to guarantee assembly quality and reduce the number of manufacturing cycles required for an reflector of the large reflector antenna. An optimal approach combining a finite element method (FEM) with a genetic algorithm (GA) is developed to simulate and optimize reflector assembly before the assembly stage.

The chromosomes of GA are encoded with the consideration of the factors that affect the assembly of reflector. The fitness function of the GA consists of the assembly accuracy obtained from simulation, with evaluation of the assembly time consumption and labor cost. The algorithm will terminate when the GA is finished or the simulation results meet the permissible accuracy. Taking the assembly process of the reflector into account, an FEM based on a “life – death element” technique is introduced to quickly and precisely simulate reflector assembly.

A case study is presented, to which the proposed approach is applied. The results of finite element simulation demonstrate that the proposed FEM can simulate the reflector assembly process with oversimplified modeling and accurate simulation results. The optimal approach provides an accurate and efficient method for reflector assembly sequence planning indicated by the comparison of the measurements and calculation results.

The results also demonstrate that the proposed approach has practical significance for guiding reflector assembly in engineering practice.

In this chapter, we reexamine the notion that socially responsible behavior by firms will lead to increased financial performance. By identifying the underlying processes, institutional settings, and actors involved, we present a framework that is more attentive to the multiplicity and conditionality of the mechanisms operating in the often tenuous connection between firms’ social behavior and financial performance. Building and expanding upon existing analyses of the CSP–CFP linkage, our model helps to explain the mixed results from a wide range of empirical studies which examine this link. It also provides a novel theoretical account to help guide future researches that are more attentive to conditionalities and contextual contingencies.

In this chapter, we explore the multilevel nature of reputation from a shared value perspective. Building on a large body of literature surrounding corporate reputation, we discuss how the creation of reputational value at the firm level may also lead to value shared by the industries and countries in which a firm operates, and vice versa. In examining the recursive and dynamic relationships, strategic implications emerge with regard to managing reputations globally. We argue that the value of reputation is determined by the ability to meet the expectations of stakeholders with respect to what they as an audience perceive as important. Stakeholders’ expectations and perceptions of what is valuable fluctuate across different markets and the more heterogeneous the markets in which a firm diversifies internationally, the more difficult it will be to manage all these expectations. By building on our understanding of firm, industry, and country reputation, and the recursive relationships between them, we contend that creating shared value (CSV), as part of the global reputation management process (GRM), is likely to be easier when there is contextual similarity and limited product diversification. Building on previous frameworks, and employing signaling theory, we create a simplified model of GRM that highlights CSV in the form of multilevel reputation. Distinctions are drawn between being efficient and effective as part of the GRM process and a corresponding typology is created. The chapter concludes with a discussion of strategic implications, alongside a few recommendations, and possible directions for future research.

Entrepreneurship educators have recently employed various computer- and game-based teaching methods to develop students’ entrepreneurship knowledge and competencies. However, our understanding of the learning outcomes (LOs) of such methods for students and specifically gamification teaching techniques is fragmented and underdeveloped. This chapter aimed to narrow the gap by systematically analyzing the peer-reviewed empirical studies on gamification and students’ entrepreneurship LOs (ELOs).

This study employed the systematic literature review method to examine the papers on the intersection between gamification and entrepreneurship education (EE). Some of 80 papers were retrieved from Google Scholar, Web of Science and Scopus databases and 16 papers were included in the final analysis. The papers were analyzed based on the key LOs that teaching entrepreneurship using gamification have for students.

This study found limited literature on the interrelationship between gamification and students’ ELOs. The majority of these studies suggested a positive association between gamification and students’ ELOs. These ELOs were classified into four key groups including cognitive, behavioral, social/interpersonal and skill-based LOs. This analysis explored the huge gap in empirical studies on the impact of gamification on students’ ELOs.

This exploratory study is limited to the systematic review of the empirical researches published in scientific journals. Of the numerous game-based and simulation teaching methods, this systematic analysis focused on gamification and its effects on cultivating entrepreneurial knowledge and competencies in students. Future studies should include published and unpublished papers in other sources (such as books, book chapters, working papers and theses) and other types of technology-based entrepreneurship teaching methods.

Educators and computer-based game designers may use the findings of this study to improve the effectiveness of gamified EE and training programs by connecting the objectives and content of the programs to students’ ELOs and examining if the programs create the intended ELOs in students.

This chapter is one of the first attempts that examines students’ LOs of gamification in EE. This chapter contributes to the limited validated knowledge and understanding of the impact of gamification on ELOs of students.

Both the theory and practice of corporate social responsibility (CSR) are foundational to the field of Business & Society (B&S). However, efforts to define and operationalize this construct have been undermined by definitional discord arising from the disparate sense-making assumptions and methods of competing North American and European research traditions. Scholars wedded to the North American research tradition have striven mightily to uncover “objective” evidence in support of the instrumental proposition that IF corporate executives were to invest more resources to enhance social and environmental performance, THEN the firm’s burnished brand image, reputation, and perceived legitimacy would elevate the firm’s long-term financial performance as well. However, the inconclusive statistical record has failed to move many corporate decision makers beyond the minimal social and environmental investments needed to create the impression of compliance with societal expectations. The proliferation of corporate scandals and the pattern of settling legal disputes without admitting guilt are also troubling. The muted impact of B&S research based on proving the instrumental proposition has prompted a new generation of European B&S scholars to explore the sense-making potential of the European research tradition, which seeks meaning and normative validity within a pluralist crucible of community discourse. This contested communicative space is filled with paradoxical tensions and contending stakeholder voices and narratives. With respect to CSR, this discursive sense-making process is animated by an aspiration toward constructing shared meanings that can guide a search for more collaborative approaches to addressing systemic challenges via stakeholder engagement and experiments in multisector collaborative problem-solving. Rather than try to scientifically “prove” a fact-based pre-existing condition, this approach embraces “an emergent and mediated form of strategic ambiguity” to keep open the possibility of “fulfilling often conflicting instrumental and social/ethical imperatives at the same time” (Guthey & Morsing, 2014, p. 556). This discourse-based search for shared meanings in support of a convergence of economic, social, and environmental values frames CSR as an aspirational cocreative process rather than as a pyramid of normative assertions loosely grounded on a search for validation in efforts to find correlations (or causation) within an assortment of “objective” facts. The discursive approach to constructing CSR also highlights the relevance of the emergence of institutional innovations that enable network interactions to address shared systemic problems. Ultimately, CSR may be expressed as a form of network governance seeking to assure the sustainable outcome of system health and vitality across micro-, meso-, and meta-levels of thought and action.

Purpose: This research discusses the importance of corporate social responsibility (CSR) and its link to a financial performance metric called net interest margin (NIM) in the context of non-banking financial companies (NBFCs). CSR initiatives can lead to long-term sustainability and improved financial performance, attracting investors seeking to align their investments with their values.

Need for the Study: The research composes portfolios based on financial companies’ CSR performance and NIM ratios to help investors understand the difference between CSR and financial performance, making investment decisions based on their portfolio goals and values. Striking a balance between sustainability and the financial performance of financial companies, will help investors find a suitable balance between portfolios for investment purposes.

Methodology: The authors used data from 55 financial companies for daily returns from 2014–2015 to 2021–2022 and used descriptive statistics to measure the performance of portfolios.

Findings: The findings suggest that financial companies in India have improved their CSR scores over time, indicating an increased focus on integrating socially responsible practices into their operations. The data also show that NBFCs are catching up with banks regarding CSR scores, and some NBFC portfolios even outperform banks regarding returns. However, the study also highlights the need for some companies to focus more on CSR and business operations.

Practical Implications: The results serve as a benchmark for financial companies to assess their relative CSR performance, highlighting the need for companies to focus on integrating socially responsible practices into their operations and guiding areas where companies can improve.

This paper aims to explore the adsorption kinetics of syringin from Syringa oblata Lindl. leaves on macroporous resin and develop an efficient, simple and recyclable technology for the separation and purification of syringin.

Static adsorption and desorption properties of six resins were tested to select a suitable resin for the purification of syringin. Langmuir and Freundlich isotherm models were used to estimate the adsorption behavior of syringin on AB-8 resin. Breakthrough point and eluent volume were determined by dynamic adsorption and desorption tests. High-performance liquid chromatography-electrospray ionization-mass spectrometry was applied to identify the syringin in the purified product [syringin product (SP)]. Antioxidant and antibacterial activities of SP in vitro were evaluated by free radical scavenging ability and biofilm formation inhibitory tests.

AB-8 exhibited the most suitable adsorption and desorption capacity. Adsorption isotherm parameters indicated favorable adsorption between AB-8 and syringin. The optimal results were as follows: for adsorption, the sample concentration was 1.85 mg/mL, the sample volume was 3.5 bed volume (BV), the flow rate was 0.5 mL/min; for desorption, the ethanol concentration was 70%, the elution volume was 2.5 BV, the elution velocity was 1.0 mL/min. SP with 80.28% syringin displayed the potent antioxidant activities and inhibitory effects on biofilm formation of Streptococcus suis.

To the best of authors’ knowledge, there are no reports on purifying syringin from Syringa oblata Lindl. leaves using macroporous resins. This paper may also provide a theoretical reference for the purification of other phenylpropanoid glucosides.

This study aims to improve the maneuverability and stability of four-wheel chassis in a small paddy field; a front axle swing steering four-wheel chassis with optimal steering is designed.

When turning, the front inner wheel stops and the rear inner wheel is in the following state. The hydraulic drive system of the walking wheel adopts a driving mode in which two front-wheel motors are connected in series and two rear wheel motors in parallel. The chassis uses a combination of a gasoline engine with a water cooling system, a CVT continuously variable transmission and a hydraulic drive system to increase the control capability. The front axle rotary chassis adopts a step-less variable speed engine and a hydraulic control system to solve the hydraulic stability of the chassis in uphill and downhill conditions so as to effectively control the over-speed of the wheel-side drive motors. Through the quadratic orthogonal rotation combination design test, the mathematical models of uphill and downhill front-wheel pressures and test factors are established.

The results show that the chassis stability is optimal when the back pressure is 0.5 MPa, and the rotating slope is 4°. The uphill and downhill pressures of the front wheels are 2.38 MPa and 1.5 MPa, respectively.

The influence of external changes on the pressure of hydraulic motors is studied through experiments, which lays the foundation for further research.

The purpose of this paper is to focus on the selection of the optimum porous material modified with poly-dopamine coating for peptides enrichment. The adsorption behaviors for peptides and the antioxidant capacity of peptides fraction purified by the porous materials were investigated.

The optimum porous material with the highest adsorption capacity for peptides was selected for surface modification. The surface modified porous material was characterized by SEM, nitrogen adsorption-desorption isotherm and color change.

The results showed that the porous material was successfully modified with poly-dopamine coating. Adsorption capacity for peptides of the modified porous material was enhanced compared to the original porous material. Antioxidant capacity of peptides fraction enriched by the modified porous material was much higher than that enriched by the original porous material, indicating that the introduction of poly-dopamine coating was inclined to enrich peptides with certain amino acid residues.

The structures of peptides are a bit not clear, which is the subject of future investigation.

This contribution provides a method to design and prepare porous materials with poly-dopamine coating to separate and enrich peptides or peptides fraction with high antioxidant capacity.

It showed that polarity, surface area, pore diameter and interactions were contributed to high adsorption capacity. The peptides fraction purified by the modified porous material showed excellent antioxidant capacity through results of reduction of DPPH radical, because of the enrichment of the peptides with certain amino acids residues which were considered to enhance radical scavenging capacity. This paper provides new insights into designing and preparing porous materials with poly-dopamine coating to enrich peptides fraction with high antioxidant capacity.