Search results

This paper aims to study the corrosion protection of 410 stainless steel (410SS) cracked by fatigue tests. The purpose of this study is to show that using polymeric coatings, it is possible to reduce the corrosion rate in metallic structures in operation.

Poly(3-hexylthiophene) (P3HT)/poly(methyl-methacrylate) (PMMA) composite was used as a coating to protect the cracked 410SS in the corrosive environment 0.5 M NaCl at 25°C and 80°C. Physicochemical characterization was carried out by adhesion tests, thermogravimetric analysis, nuclear magnetic resonance and size exclusion chromatography. Surface morphology was studied before and after the electrochemical tests by scanning electron microscopy. Uncoated and coated cracked 410SS were characterized by DC electrochemical techniques: linear polarization resistance and potentiodynamic polarization curves.

P3HT/PMMA coating reduced corrosion rate and crack propagation of 410SS in the corrosive medium NaCl 0.5M. The P3HT/PMMA coating increased the polarization resistance by one order of magnitude and decreased the corrosion current density by one order of magnitude, relative to the values obtained with uncoated cracked 410SS. The coating helped to have a less damaged surface and less crack propagation on the cracked 410SS. The feasibility of increasing the useful life of cracked metal structures in a saline environment was demonstrated through polymeric composite coatings.

In the literature, no works were detected that report the use of organic coatings to protect cracked metals against corrosion. This is the first reported work on the corrosion protection of 410SS in a saline medium using coatings based on P3HT/PMMA.

The purpose of this paper is to study the antifriction, antiwear and tribolayer formation properties of the trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate ionic liquid (IL) as additive at 1 wt.% in two base oils and their mixtures, comparing the results with those of a commercial oil.

The mixture of the base oils used in the formulation of the commercial oil SAE 0W20 plus the IL was tested under rolling/sliding and reciprocating conditions to determine the so-called Stribeck curve, the tribolayer formation and the antifriction and antiwear behaviors.

The use of this IL as additive in these oils does not change their viscosity; improves the antifriction and antiwear properties of the base oils, making equal or outperforming these properties of the SAE 0W20; and the thickness and formation rate of the tribolayer resulting from the IL-surface interaction is highly dependent on the type of base oil and influence on the friction and wear results.

The use of this IL allows to replace partial or totally commercial antifriction and antiwear additives.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2020-0179/

This paper aims to describe the development of an internal waste-collection device for patients who have undergone a colostomy or ileostomy. Its design is based on devices that have been produced by 3D printing with acrylonitrile butadiene styrene. The aim is to find an alternative to the external bags that these patients currently use and to evaluate the properties of the device produced by additive manufacturing.

Software for solid modelling has been used, and virtual models allow its visualization and animation, for evaluation, in a simple and fast way. Subsequently, functional prototypes have been developed by a multidisciplinary team, which includes surgeons and engineers, and have been tested to verify their mechanical properties and suitability for function.

The project has developed a functional design that has been patented and is in the clinical trials phase. This study demonstrates how 3D printing technologies are the perfect complement to accelerate the design process and build functional prototypes at low costs. The experimental tests regarding cytotoxicity, printing orientation, dynamic and static loads and temperature resistance have demonstrated the validity of the proposed device.

A device for internal pouch in colostomized patients has been designed, manufactured by fused deposition modelling and validated.

There is an emerging literature on scientists in the principal investigator (PI) role that identifies them as central and key actors in entrepreneurial ecosystems. PIs in leading large-scale public research programmes and teams require an array of skills and abilities to be effective in this role. The purpose of this paper is to propose a human capital (HC) measurement scale that can unearth their competencies at the micro level, since there is no specific measurement scale specifically for PIs.

The proposed model was reached relying on both qualitative and quantitative methodologies, to then apply exploratory factor analysis (EPT) and confirmatory factor analysis (AFC) to verify its suitability, as well as its internal consistency and reliability using appropriate indices.

The proposed model is composed of six PI's HC factors, such as research knowledge, open-mind research ability, research perform ability, stoic research skill, innovation skill and critical skill.

In proposing this, this paper advances micro-level understanding of the competencies that PIs require to be effective in the role, and answers the call for deeper research on these crucial actors. Shedding light on this issue is beneficial for not only the administrators of the universities, the research centres or the funding agencies to obtain further essential information in selecting the best-qualified person, but also to self-evaluate their skills, abilities and knowledge so that they can direct their efforts towards improving the weak aspects of their HC. Furthermore, it can be an additional useful criterion for defining the career plans of PIs or their promotion policies.

This paper describes the evolution of the design of a mechanical distractor fabricated using additive manufacturing (AM) technology for use in surgical procedures, such as transanal endoscopic microsurgery (TEM). The functionality of the final device was analysed and the suitability of different materials was determined.

Solid modelling and finite element modelling software were used in the design and validation process to allow the fabrication of the device by AM. Several prototypes were manufactured and tested in this study.

A new design was developed to greatly simplify the existing devices used in TEM surgery. The new design is easy to use, more economical and does not require pneumorectum. Different AM materials were investigated with regard to their mechanical properties, orientation of parts in the three-dimensional (3D) printer and cytotoxicity to select the optimal material for the design.

The device designed by AM can be printed anywhere in the world, provided that a 3D printer is available; the 3D printer does not have to be a high-performance printer. This makes surgery more accessible, particularly in low-income regions. Moreover, patient recovery is improved and pneumorectum is not required.

A suitable mechanical distractor was designed for TEM, and different materials were validated for fabrication by AM.

The purpose of this paper is to investigate the effects of firms’ general and specific human capital on the export propensity and intensity.

The resource-based view of the firm provides the theoretical background to examine export performance. Empirical analysis is carried out using a national representative sample of Spanish manufacturing firms and employing Logit and Tobit models. Export performance is evaluated in a dual way, as export propensity and export intensity. In relation to human capital a distinction is made between general and specific human capital.

The results shown that differences exist in the effect of general and specific human capital. While the firms’ general human capital (education of the firm’s employees) affects both export propensity and intensity, only some dimensions of specific human capital (employees’ experience at the workplace) affects export propensity and intensity but no the employees’ training. Moreover, the firms’ general human capital generates greater changes than the effect of specific human capital on the export behavior.

This paper extends a line of research underexplored in the literature by analyzing the effect of organizational human capital on the firm’s export performance; moreover, it is the first study for Spanish manufacturing firms; the distinction between general and specific human capital enhances our comprehension of the human capital as a determinant of export performance. In relation to the specific human capital, besides training, we add a new variable related to experience at the workplace.

Many of the papers that analyse human resource management (HRM) in merger and acquisition (M&A) processes focus on the last two stages (integration and implementation). Then, the purpose of this paper is to propose an HRM model for the first stage of the process (planning) with four key factors: the due diligence process, the integration plan, the communication plan and the learning plan.

From the theoretical model, the authors analyse a case study of a multinational company that operates in the mechanical engineering sector.

The results show the special importance of HRM in the success of the M&A process. And, the main actions implemented in human resources (HRs) contributing to the success of this process are identified.

Subsequent investigations could conduct similar analyses for the rest of the stages of the M&A process (integration and implementation), with the objective of presenting a complete HRM model in M&A processes.

The case study allows researchers to learn from professionals and business leaders while also offering a theoretical model that can help managers make decisions and improve the management of these processes.

The main contribution of this study has been to observe how HRs are managed in the planning stage of M&As.

The purpose of this paper is to propose a human resource management model for the integration stage of mergers and acquisitions (M/A) process with four key factors: leadership and integration team; change and restructuring process; human resources (HR) resistance; valuable HR retention.

The authors analyze a case study of a multinational company that operates in the mechanical engineering sector.

The results show the special importance of human resource management in the success of the merger and acquisition process. And, the main actions implemented in HR contributing to the success of this process are identified.

Subsequent investigations could conduct similar analyses for the planning and implementation stages of the merger and acquisition process, with the objective of presenting a complete HR management model in merger and acquisition processes.

The case study allows researchers to learn from professionals and business leaders while also offering a theoretical model that can help managers make decisions and improve the management of these processes.

The main contribution of this study has been to observe how HR are managed in the integration stage of M/A.

Happiness management is receiving increasing attention in business, and this is reflected in the literature. But any business management option has to be grounded in a true awareness or belief that it will be a suitable and appropriate choice. In this belief the personal values of those who have the power to lead the way to weigh heavily. In this sense, there are personal values that, when used as guidelines in the management of a company, seem to promote the happiness of employees in the work environment. The purpose of this paper is to find the personal values of the entrepreneur. As a secondary objective, the authors also study whether these values are associated with certain entrepreneurs’ socio-demographic factors (gender and age).

The group to be studied is the Spanish business community. An exploratory study is carried out, first, with the definition of value constructs according to Schwartz’s personal values model and, second, with a relational analysis, measuring association effects through logistic regression.

Two higher-order personal values of the entrepreneur are found that seem to contain all the elements that would lead to management styles that would facilitate happiness at work. These values emerge from a dimension model of Schwartz’s theory of basic human values. MVP which, however, does not follow its four adjacent/antagonistic dimensions, but is composed of three dimensions adjacent to each other and, therefore, complementary. Moreover, some stereotypes in the literature on the relationships between personal values and certain socio-demographic factors are broken down and their effects on happiness at work are revealed.

One of the limitations of this work is the relatively small sample size. In this sense, it would be useful to check whether the overall results are repeated in larger samples. Another limitation is that this is a portrait of the group at a given time. Given the experimental nature of this type of work, especially in the case of socio-demographic factors, it would be advisable to carry out a follow-up longitudinal analysis with a time horizon. This would allow a more precise investigation of the effects of the variables mentioned above. In addition, a third limitation is that the authors are studying the collective of Spanish entrepreneurs, and in the study of personal values, culture has a determining influence (Schenck, 2016; Boer and Boehnke, 2016; Perozo and Paz, 2016). It would also be worthwhile considering this study by sector: are the values the same for entrepreneurs in different sectors?; or in some specific sectors, for example, are there differences between entrepreneurs with tech businesses versus non-tech businesses or those who make the circular economy or the green economy a guideline for their organizations? Thus, technology companies must be open to change. Openness and innovation are for their entrepreneurs’ key values to ensure their performance (Tseng, 2010; Van Auken et al., 2008). However, in these organizations, there is a framework of conflicting values between the required flexibility and the values of power and control that the entrepreneur needs, and wants, to have (Albarracín et al., 2014). On the other hand, personal values determine green self-identity and moderate its relationships with ecological care and the moral obligation of the entrepreneur (Blankenberg and Alhusen, 2019; Barbarossa et al., 2017). Therefore, it could be analysed whether these values are maintained in entrepreneurs in these sectors, influencing, as discussed in this paper, greater happiness in the work context; and whether they are conditioned by gender or age (Fotieva, 2021; Li et al., 2020). It would also be helpful to study the socio-demographic influence further, to analyse the possibility of interaction or confounding effects between socio-demographic variables and some other variables not addressed in this paper. For example, does purchasing power or income level, affect personal values? And do the values that give content to F2, power and control, lead the entrepreneur to a higher level of income level or vice versa? Do other factors play a role? In fact, for Hirigoyen (2008), values such as altruism, benevolence and universalism are considered as obstacles to the development of the company. Subsequently, authors such as Salas-Vallina (2018) and Boubakary (2015) conclude that far from that idea, these axiological elements would lead to more significant business development through the satisfaction and happiness they generate in employees and stimulate their productivity, matching with the conclusions. It would be interesting, as a complement to the approach of this work, to carry out a study on the happiness at work of the entrepreneur’s employees, being the group of employees surveyed. Knowing the profile of values of an entrepreneur through the scale proposed in this work, it would be possible to analyse whether this is associated with greater or lesser perceived happiness among his/her employees. As mentioned above, from the methodological point of view, a risk of using the multidimensional scaling modelling for the analysis of personal values is that the respondent reflects more what he/she considers socially desirable than his/her true perception. This bias is one of the main limitations of psychological research. However, the fact that European Statistical Office surveys are guided by experts, both in processing -knowing how to deal with social desirability in personal values research (Danioni and Barni, 2020) – and in data collection, eliminates this limitation.

However, despite the above limitations, this paper makes important contributions. On the one hand, at a theoretical and instrumental level, it shows that the higher-order values graph of Spanish entrepreneurs follows the circumplex essence of the Schwartz value model but does not obey its number of higher-order dimensions. In the case of entrepreneurs, it consists of three elements, three dimensions, adjacent and complementary. None of them contradicts any other. A methodology is created to portray the Spanish entrepreneur in an axiological way and, from this portrait, to reveal his/her tendency towards a leadership style that promotes the happiness of his/her employees, through the importance given to these three factors or dimensions. These dimensions are weighted, in turn, by issues such as gender or age group. For added practical purposes, this information would be beneficial, in the first place, for all those who want to work in and with a particular entrepreneur. The type of leadership or management expected is a factor or reason why a person decides where he/she would like to work (Qing et al., 2020; Lee, 2016). This is not only for the potential employees of that business but also for all those groups or stakeholders, who engage with the company to perform their functions. Individuals make important decisions and choices about their relationships in the work environment based on the alignment of their values with those of the party they want to engage with (Sagiv et al., 2015). On the other hand, it can serve entrepreneurship educators. By knowing the value factors of entrepreneurs, adjusted to the culture of the particular territory, they will be able to pass on this information to their entrepreneurship students (Karimi and Makreet, 2020; Arieli and Tenne-Gazit, 2017) and teach them how they could increase the happiness at work. It also serves to better understand the constructs of management values-employee engagement-workplace happiness in the current environment (Ravina-Ripoll et al., 2020; Salas-Vallina et al., 2017; Wang and Yang, 2016), by introducing the role of personal values on the entrepreneur’s governance style into this construct (Figure 1).

Finally, this study can also have social implications, making its tiny contribution to the SDGs through the study of personal values that guide the behaviour of the entrepreneur. The decision by international institutions for countries to implement the sustainable development goals (SDGs) (UNSDG 2030 Agenda) as cross-cutting strands of their policies has boosted the idea of addressing happiness at work. Thus, SDG 8 talks about Decent Work. In addition to the priority of improving the conditions of groups living in discriminatory working environments (child labour, poverty, precariousness, etc.), taken to its maximum expression, this objective encompasses much more. Workers spend a large part of their lives at work. At the same time, a business needs its employees to be productive. SDG 8 aims to ensure that people have quality employment, increasing their productivity and consumption potential. On the other hand, SDG 3 is about “Health and Well-being”, i.e. ensuring healthy lives and promoting well-being for all ages. It is also about health and well-being in the work environment. Issues such as interpersonal relationships at work, environment and teams, organizational culture, role in the organization, autonomy at work and fostering innovative spirit, can be factors that, if poorly managed, reduce the feeling or perception of happiness at work, especially in today’s digital world (Foncubierta-Rodríguez and Montero-Sánchez, 2019; Leka and Houdmont, 2010; Näswall et al., 2008).

The role of certain higher-order personal values of the entrepreneur is highlighted, which could make him/her tend towards the realization of happiness management practices. Furthermore, through the methodology used, a model of the entrepreneur’s higher-order values has been established, which can be used as a tool to generate reasonable expectations about his/her way of governance and to what extent it is close to a framework conducive to happiness management. This information can be beneficial to all those people and groups that establish relationships with the company, from managers and employees to external stakeholders. In this way, it also helps to anticipate the companýs response to corporate social responsibility.

Low citizen adoption rates jeopardize the success and proliferation of e-government systems. This study aims to understand how the perception of environmental sustainability (ES) can influence a citizen’s intention to use e-government systems.

In a case study in Peru, the technology acceptance model (TAM) adoption model is extended with the construct of ES and evaluated with structural equation modeling. An 18-element, in-person survey was constructed and administered to citizens of Lima, Peru who had prior exposure to e-government systems.

The results show that citizens can be positively influenced to adopt e-government systems if they perceive that doing so will contribute to ES.

As this was a preliminary study, further research should focus on specific, as opposed to general, e-government systems, as well as encompassing a broader cross section of the population.

Administrators of e-government initiatives can consider public-interest factors, alongside of the common self-interest factors, when looking to improve adoption rates of e-government systems.

This is the first time that TAM has been extended with the construct of ES.