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There are many problems in civil or mechanical engineering related to structural design. In such a case, the solution techniques which lead to deterministic results are no longer valid due to the heuristic nature of design problems. The purpose of this paper is to propose a computational tool based on genetic algorithms, applied to the optimal design of cross-sections (solid tubes) of 3D truss structures.

The main feature of this genetic algorithm approach is the introduction of a selective-smart method developed in order to improve the convergence rate of large optimization problems. This selective genetic algorithm is based on a preliminary sensitivity analysis performed over each variable, in order to reduce the search space of the evolutionary process. In order to account for the optimization of the total weight, the displacement (of a specific section) and the internal stresses distribution of the structure a multiobjective optimization function was proposed.

The numerical results presented in this paper show a significant improvement in the convergence rate as well as an important reduction in the relative error, compared to the exact solution.

The variables sensitivity analysis put forward in this approach introduces a significant improvement in the convergence rate of the genetic algorithm proposed in this paper.

The main purpose of this paper is to analyse the impact of the intellectual capital (IC) on the competitiveness in the manufacturing small- and medium-sized enterprises (SMEs) in Mexico.

The approach of this investigation is developing a theoretical construct to determine the correlation between IC and competitiveness and find the most relevant factors that impact it, where IC is independent variable and the competitiveness is dependant variable. Using the Likert scale to determine the degree of agreement or disagreement, the survey was applied to 420 SMEs. The results were analysed using confirmatory factor analysis, Cronbach’s alpha and subsequently structural equation models.

The results show that the IC dimensions – the information obtained, IC developed and learning and feedback – have an effect on the competitiveness of SMEs. The paper presents the theoretical validation of the factors that impact on IC and competitiveness and hence they are the key elements that impact mostly on each analysed variable.

The results obtained measure the level of correlation between the variables in the study, helping to design strategies for the key factors needed to integrate the IC and to develop competitive synergies in the manufacturing SMEs.

This study shows the effects of the IC that are directly impacting the competitiveness of SMEs so that each factor of the dependent and independent variables should be analysed separately to propose improvements in implementing IC to seek higher level of competitiveness.

This qualitative study aims to fill gaps in a widely studied and relevant organizational feature: the alignment between information technologies and business strategies.

This research is a qualitative study. The authors used focus groups, content analysis and semantic networks as research approaches to identify the main factors that prevent or foster such alignment.

Results reveal a leading role of innovation, organizational culture, access to information and financial factors that could promote or inhibit alignment and competitiveness.

This research was conducted only in small and medium organizations in Mexico, which represents about 52% of the Mexican Gross Domestic Product (for Mexico as one of the leading trade partners of the USA).

This study aims to analyze communication from the perspective of social marketing, positive emotions, and the topics chosen by Spanish tourist destinations to show their destination image. Additionally, this research shows a message classification model, based on the aforementioned characteristics, that has generated a greater impact, offering clarity to tourism managers on the type of content they should publish to achieve greater visibility.

The methodology used in this work combines content analysis and data mining techniques. The classification tree using the chi-square automatic interaction detector (CHAID) algorithm was selected to determine predictors of like behaviour.

The results show that the predictor variables have been emotions, social marketing and topics. Also, the characteristics of the messages most likely to have a high impact are those related to emotions of joy or happiness, their purpose is behavioural, and they talk about rural, cultural issues, special dates, getaways, or highlights of a town or city for something specific.

This study is the first to analyze the content of the tweets shared by destination tourism managers from a social marketing, positive emotions, and sustainability perspective, determining the possible predictors of likes on Twitter. The authors contribute to the literature by deepening the understanding of how social marketing and the positive emotions promoted drive a more significant impact in tourism communication campaigns on social media. The authors provide destination managers with a way better to understand the variables relevant to users in tourism content.

While the concept of reciprocity has gained traction in qualitative research, especially as the term relates to challenging power dynamics inherent within the research and evaluation process, a gap remains in understanding how a researcher's or elevator's cultural background shapes the way reciprocity is conceptualized and practiced. We explore how Filipino concepts connected to reciprocity (utang na loob, pakikipagkapwa, and alalay) inform the practice of Filipina American researchers and evaluators in academia. We use Sikolohiyang Pilipino and Critical Kapwa in the conceptual framework to guide our study and employ a collaborative autoethnography (CAE) methodology. We present three findings: (1) reciprocity and utang na loob as a nontransactional debt, (2) reciprocity and pakikipagkapwa as seeing the humanity in others, and (3) reciprocity and alalay as carrying the weight together. We discuss this study's implications – regarding theorizing reciprocity, using collaborative autoethnography as methodology, and reclaiming deeper ways of knowing from a critical perspective – for transforming evaluation and research practice. Specifically, through a collaborative autoethnography, we learned the importance of understanding the nuances of language (i.e., Tagalog and other Filipino languages) as a decolonizing approach to arriving at our analysis of pakikipagkapwa through kuwentuhan. Methodologies that attend to a culturally responsive evaluation and research practice – –such as CAE and kuwentuhan– – amplify the voices of silenced communities. Lastly, deeply understanding the cultural context of evaluators' and researchers' experiences and cultural identities as well as studying oneself through a collaborative autoethnography can create practices of reciprocity that have been buried by settler colonialism.

The study aims to provide relevant information on the educational processes experienced by university students in Spain during the period of compulsory confinement. To this end, the key factors of the emergency educational model implemented by the country's universities have been analysed.

The study investigated, through qualitative, exploratory research and 30 in-depth interviews, how university students have lived the process of change to alternative forms of education during the crisis, what training experiences stand out and what factors related to virtual education they identify as relevant keys.

Participants usually focus on three main topics: (1) The impacts of changes in training development with regard to methodologies and forms of assessment; (2) The facilities and difficulties in this new modality of online training; and (3) The consequences of the crisis on higher education in the medium and long term.

Students participating in the study offer relevant and critical information on the adaptations developed by Spanish universities during the Coronavirus crisis. This information can be fundamental for the conscious decision making of the institutions, so that they can develop educational processes more adequate to the needs and possibilities of the university students in times of crisis.

The rise of “strong man” politics in the Philippines brings attention to manhood narratives. Machismo remains a strong presence in the upper echelons of society, despite gender equality initiatives and a strong feminist movement. With Rodrigo Duterte portraying the “father-figure” of the nation, one questions what this type of manhood means for the Filipino family.

This study traces the construction of Filipino manhood in relation to the country’s strongest unit of the family. Utilizing a systematic review of seminal outputs on masculinity, this piece explores the definition of Filipino manhood using texts from various Filipino gender and development scholars. Sikolohiyang Pilipino or Indigenous Filipino Psychology frames the identified themes that surround the image of a Tunay na Lalaki or True Man. The labas (outer world) and loob (inner self) are then framed in relation to Filipino men’s roles. Intersections between one’s peer group, socio-economic class, and the situation in the global migration context inform the formation of one’s labas (outer self/identity). The findings indicate that Filipino manhood traits, as seen in one’s loob (inner self) contextualize one’s understanding of manhood’s construction as familial. By unearthing the nuances of manhood in the archipelago, this chapter showcases masculinities from the subaltern and purports possible ways of decolonizing “from below.”

This chapter describes the possibilities for fusing ethnography and evaluation to transform educational inquiry and educational entities (programs, systems, and policies). The central question explored is, how do we best pursue work connecting evaluation and ethnography to fulfill our commitments to diversity, justice, and cultural responsiveness in educational spaces, to make tangible transformative change? With 40 years of literature on ethnography-evaluation connections as a foundation, this chapter describes three coalescing themes: transformative, intersectional, and comparative. These themes are proposed as valuable for guiding contemporary educational inquiry that serves social justice. The transformative theme denotes educational inquiry in which the researcher or evaluator ethically collects data, makes defensible interpretations, and facilitates social change in collaboration with others. Doing transformative work that meaningfully fuses ethnography and evaluation rests on essential factors like time, values engagement, collaboration, and self-work. The intersectional theme describes intersectionality as an evolving analytical framework that promotes social problem-solving and learning via investigating the significance of intersecting social identities in (a) how people's lives are shaped, (b) their access to power across circumstances, and (c) their everyday experiences of subordination and discrimination. Finally, the comparative theme refers to sensibilities and practices gleaned from the interdisciplinary and transnational field of comparative education, including developing comparative cultural understanding and analyzing complex systems in one's inquiry projects. Across themes, this chapter emphasizes positionality, responsibility, and theory-bridging to make sense of the uses of ethnographic concepts and practices in transformative evaluation work in educational spaces.

Long-term reliability analysis of generation capacity based on the forecasted load demand helps to identify the optimal generation expansion plan of the system. This paper analyzes the generation adequacy of Mexico’s National Interconnected Power System (MNIPS) using loss of load expectation (LOLE) and loss of energy expectation (LOEE) indices.

These indices are calculated through an analytical (recursive) method and are then compared with values recommended by the North American Electric Reliability Council (NERC). Weekly indices are computed to analyze the load curtailment options that may occur in some periods.

Forecasted values, including load and generation capacity considering maintenance schedules, additions of new generating units and permanently shut down units in accordance with the long-term expanding-system plan have been considered. The load forecast uncertainty is also included.

This is original work.