Paulo Silva Lobo, Mariana Jesus and Paulo S.A. Freitas
In this paper a model for the prediction of the failure strain of fiber reinforced polymer (FRP) sheets is proposed, based on a significant database consisting of results reported…
Abstract
Purpose
In this paper a model for the prediction of the failure strain of fiber reinforced polymer (FRP) sheets is proposed, based on a significant database consisting of results reported in the literature for concrete columns with circular cross-section confined with carbon, glass and aramid fiber reinforced polymers. This study aims to analyze the aforementioned model.
Design/methodology/approach
Significant experimental research on the confinement of columns externally wrapped with FRP has been carried out in the last decades. Several models of confined concrete have been proposed using different approaches for the prediction of the failure strain of FRP sheets. The majority of those proposals were developed to be simple, thus significant differences with experimental results can be found.
Findings
The results of a total of 572 specimens were considered. Statistical analysis was used to derive a regression model, which relates the outcome to a set of predictors of interest using linear assumptions.
Originality/value
The proposed model is shown to be more accurate than other proposals found in the literature.
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Carlos-María Alcover, Mariana Bargsted and Jesús Yeves
In the context of an aging workforce and uncertain labor markets, it is a priority to identify and analyze what factors influence intentions regarding motivation to continue…
Abstract
Purpose
In the context of an aging workforce and uncertain labor markets, it is a priority to identify and analyze what factors influence intentions regarding motivation to continue working, how and when to retire. From the life course perspective, this paper aims to capture the individual agency and structure perceptions to withdrawal from work early/late intentions in the mid- and late-career, identifying voluntary/involuntary factors underlying these intentions.
Design/methodology/approach
Hypotheses were tested using multiple regression analyses based on a cross-sectional design, with a representative sample of 414 Chilean workers over the age of 45.
Findings
The results depict several patterns of contextual factors operating at different levels underlying mid- and late-career-related intentions. Specifically, they identify how perceptions of individual agency and structure are significantly associated with voluntary and involuntary factors that guide intentions to stay working or retire early, as well as to prolong working life and to lean toward bridge employment.
Originality/value
This study contributes to identifying perceptions of individual agency and structure in career intentions and can help individuals and organizations clarify the voluntary and involuntary factors behind work–life intentions in their middle and final career stages. In addition, the results can contribute to international research in this field by providing information on the underrepresented Ibero-American context.
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Mariana Bargsted, Jesús Yeves, Cristóbal Merino and Juan I. Venegas-Muggli
Career success has been understood as an outcome of career goals, achievement and employability resources. Recent research has enlightened its potential effect on career decisions…
Abstract
Purpose
Career success has been understood as an outcome of career goals, achievement and employability resources. Recent research has enlightened its potential effect on career decisions and perceived employability. This paper aims to test the role of career success in the relationship between competence employability and perceived employability.
Design/methodology/approach
An online survey was answered by 1,087 graduates from a large nonselective higher education institution that enrolls a significant number of first generation and lower socioeconomic background students. Structural equation modeling was used to examine the mediating role of career success, as was proposed.
Findings
Subjective career success partially mediates the relationship between competence employability model and perceived employability. However, objective career success was not related to perceived employability.
Research limitations/implications
The study made use of a cross-sectional design, which hinders the identification of causal direction.
Practical implications
For training and education, both employability competences and subjective career success are resources to enhance in order to promote employee's personal beliefs about obtaining and maintaining employment.
Originality/value
This study combines different employability approaches, and their relationship with career success, considering subjective and objective career success as relevant personal resources that could impact self-perceptions and foster career behaviors. Testing the utility of these theoretical models on a group that has been underrepresented in career development studies is also relevant, particularly, the use of gain spiral concept from Conservation of Resources theory.
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Nicholas J. Goetzfridt and Mark C. Goniwiecha
Micronesia, a term that means “small islands,” refers to a region of Western Pacific islands scattered across an area of the Pacific Ocean larger than the continental United…
Abstract
Micronesia, a term that means “small islands,” refers to a region of Western Pacific islands scattered across an area of the Pacific Ocean larger than the continental United States (see figure 1). This vast area, located in the tropics almost entirely north of the Equator, covers more than 4,500,000 square miles of ocean and includes more than 2,100 palm tree‐studded islands, islets, and coral atolls. Yet its total land area is fewer than 1,200 square miles—only slightly larger than Rhode Island (see figure 2). Only about 125 of the islands are inhabited on a permanent basis, by some 350,000 people.
Linda M. Waldron, Danielle Docka-Filipek, Carlie Carter and Rachel Thornton
First-generation college students in the United States are a unique demographic that is often characterized by the institutions that serve them with a risk-laden and deficit-based…
Abstract
First-generation college students in the United States are a unique demographic that is often characterized by the institutions that serve them with a risk-laden and deficit-based model. However, our analysis of the transcripts of open-ended, semi-structured interviews with 22 “first-gen” respondents suggests they are actively deft, agentic, self-determining parties to processes of identity construction that are both externally imposed and potentially stigmatizing, as well as exemplars of survivance and determination. We deploy a grounded theory approach to an open-coding process, modeled after the extended case method, while viewing our data through a novel synthesis of the dual theoretical lenses of structural and radical/structural symbolic interactionism and intersectional/standpoint feminist traditions, in order to reveal the complex, unfolding, active strategies students used to make sense of their obstacles, successes, co-created identities, and distinctive institutional encounters. We find that contrary to the dictates of prevailing paradigms, identity-building among first-gens is an incremental and bidirectional process through which students actively perceive and engage existing power structures to persist and even thrive amid incredibly trying, challenging, distressing, and even traumatic circumstances. Our findings suggest that successful institutional interventional strategies designed to serve this functionally unique student population (and particularly those tailored to the COVID-moment) would do well to listen deeply to their voices, consider the secondary consequences of “protectionary” policies as potentially more harmful than helpful, and fundamentally, to reexamine the presumption that such students present just institutional risk and vulnerability, but also present a valuable addition to university environments, due to the unique perspective and broader scale of vision their experiences afford them.
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Heloísa Alves de Figueiredo Sousa, Josemar Gonçalves de Oliveira Filho, Mariana Buranelo Egea, Edilsa Rosa da Silva, Dirceu Macagnan, Marcio Pires and José Peixoto
Banana is an important tropical fruit with high demand in the market. The ripe fruits are less resistant to transport making logistics difficult. Moreover, as a climacteric fruit…
Abstract
Purpose
Banana is an important tropical fruit with high demand in the market. The ripe fruits are less resistant to transport making logistics difficult. Moreover, as a climacteric fruit, it has a short post-harvest shelf life. Edible coatings/films, including active substances, have been used as an alternative for preserving fruits and vegetables during post-harvest period. The purpose of this study was to evaluate the incorporating clove essential oil on the properties of cassava starch films and their effect on the post-harvest quality of different banana varieties.
Design/methodology/approach
Cassava starch films incorporating clove essential oil were developed and the films were characterized with respect to moisture, thickness, solubility, water vapor permeability (WVP), biodegradability, color and in vitro antifungal activity. Cultivars such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista were coated with cassava starch, cassava starch film with clove essential oil (CSEO) and polyvinyl polychloride (PVC). The quality of fruits was monitored during eight storage days using mass loss, total soluble solids content (TSS) and titratable acidity (TTA).
Findings
Incorporation of clove essential oil significantly increased film thickness, reduced moisture content, solubility and WVP (p < 0.05) and did not affect the biodegradability and color of the films. The essential oil incorporated films showed antifungal activity against the fungi Colletotrichum gloeosporioides and Colletotrichum musae, but not against the yeast Saccharomyces bourladii. CSEO and PVC coating were more efficient in reducing the mass loss, SS content and TTA of the coated fruits in all varieties studied. Both CSEO and PVC coatings improve the quality attributes such as TSS and TTA and reduced mass loss, of the banana varieties such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista during storage.
Originality/value
The active film with essential oil showed antifungal activity and essential oil can be incorporated into other food systems. This study approaches a new possibility of film coating with essential oil for a banana that showed minimum weight loss and satisfactory quality and increased shelf life. This film coating demonstrates biodegradable characteristics that could be eco-friendly and sustainable to consumers.
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Marcello Angotti, Aracéli Cristina de S. Ferreira, Teresa Eugénio and Manuel Castelo Branco
This study seeks to collaborate with the discussions on the usefulness of the narrative approach in accounting. In this context, this study aims to elaborate small collective…
Abstract
Purpose
This study seeks to collaborate with the discussions on the usefulness of the narrative approach in accounting. In this context, this study aims to elaborate small collective stories, developed from interviews, to expose the population’s perception of the social and environmental impact (positive and negative externalities) resulting from iron ore mining in the city of Congonhas-Minas Gerais (MG).
Design/methodology/approach
This research, using counternarratives, aims to elaborate small collective stories, developed from 52 interviews, to expose the population’s perception of externalities resulting from the exploitation of iron ore in the city of Congonhas-MG, Brazil, to give more insight for social and environmental accounting reporting. A qualitative investigation is used with a narrative approach that focuses on a specific event in the participants’ lives.
Findings
The authors sought to create a sense of collective experiences of the interviewees through narratives representative of the residents’ perception of externalities in the form of small collective stories. However, it can be observed that the local population recognizes the impact of numerous externalities. Likewise, the use of narratives allows the reader to experience another reality – a reflection on the impact of business activities in a given context. Unlike conventional corporate social reporting, models based on qualitative information can be inclusive, produced by/for the community toward action that transforms the local reality.
Originality/value
This study intends to contribute to the debate on reporting models that are developed by and for external stakeholders. This approach has the potential to improve participants’ both awareness and engagement, supporting transformative social action. This study makes several contributions. It contributes to the literature with a narrative approach, which is not often used in the accounting literature; it brings insights from the Latin American context, which is especially valuable given how the Anglo-American accounting literature includes few papers addressing this context; it presents the view of marginalized communities that are too often overlooked (this narrative approach offers important insights into the lived experience of people at a very granular level).
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Aqila Rafiuddin, Jesus Cuauhtemoc Tellez Gaytan, Rajesh Mohnot and Arindam Banerjee
The aim of this research is to explore multiscale hedging strategies among cryptocurrencies, commodities, and GCC stocks. Particularly, this is done by evaluating the…
Abstract
Purpose
The aim of this research is to explore multiscale hedging strategies among cryptocurrencies, commodities, and GCC stocks. Particularly, this is done by evaluating the connectedness among these asset classes covering a period with COVID-19 implications. Using the wavelet approach, the present study aims to recommend whether there exist different time horizon-based hedging abilities across the asset classes.
Design/methodology/approach
The approach used in this study is a multiscale decomposition of time series based on wavelets of daily prices of 13 asset classes. Since the wavelet analysis allows to decompose the time series into its frequency components at different time scales by a filtering process the study covered 1-day, 8-day, and 64-day time horizons to examine the hedging properties across those asset classes.
Findings
The results of this study show that hedging effectiveness differs among stock markets over time. In some cases, cryptocurrencies may keep their hedging properties across time while in others they switch from safe haven to hedge devices. In almost all cases, the three main cryptocurrencies showed diversifying properties as was observed by the multiscale correlation and hedge ratio estimations. In a competing sense, gold showed safe haven properties across time than cryptocurrencies except at an 8-day time scale where hedge ratios were low, positive and statistically different from zero that could be interpreted as a good hedge device in the medium term.
Research limitations/implications
Though this research has considered a set of thirteen asset classes, it was limited to a period in which most cryptocurrencies started trading for the first time which reduces the number of observations compared to Bitcoin prices and stable coins such as Ethereum, Ripple, and Bitcoin Cash. Also, the research was focused on the GCC stock markets which may have different results as compared to other regional markets of Asia or Latin America. A comparative analysis in future could be another area of research in future.
Practical implications
This study has some significant policy implications. The cryptocurrency market is severely affected by demand and risk shocks to crude oil prices during the COVID-19 period. From the investor's point of view, diversification benefits can be obtained by combining cryptocurrencies along with oil-related products during episodes of financial turmoil and COVID-19 pandemic. The GCC region is constantly endeavoring to adopt more scientific tools and mechanisms of investment, and therefore, this study's results will provide some useful directions to the government, policymakers, financial institutions, and investors.
Originality/value
The current study covers a big bunch of 13 assets spanning across financial and real assets. This is based on literature gap and hence, will be a significant addition to the existing literature. Moreover, the GCC region is emerging as a global investment hub and this study will provide investors dynamic hedging strategies across these asset classes.
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Mariana Zerón Félix, Claudia Milena Álvarez Giraldo and Cristian Alejandro Rubalcava de León
The objective of this study is to review the main studies of social entrepreneurship (SE) in Latin America, to categorize them into four categories. To accomplish this, a…
Abstract
The objective of this study is to review the main studies of social entrepreneurship (SE) in Latin America, to categorize them into four categories. To accomplish this, a bibliometric literature review is carried out based on data from the Web of Science database, to locate the Latin American collection of studies. In this way, the main studies are described and grouped, following a qualitative scheme that allows to substantiate the main findings of the Latin authors. Consequently, the progress made in the literature of the SE for Latin America is corroborated, by visualizing that the SE turns out to be a forceful fact to manage well-being, but that it is faced with an inconsistent development.