Bernadett Csurgó, Imre Kovách and Nicole Mathieu
The chapter focuses on rural-urban food links in the context of governance. We seek to understand a rural-urban innovator mechanism is emerging through the food system and the…
Abstract
The chapter focuses on rural-urban food links in the context of governance. We seek to understand a rural-urban innovator mechanism is emerging through the food system and the renewed question of proximity and relative autonomy in the alimentary supply of this type of space and local society. We present case studies from Paris and Budapest metropolitan rural areas exploring institutional and private actors of governance, their power networks, food and related cultural components of rural-urban relations, the function of food links and the way in which they are governed. We have found several differences in governance methods between the Paris and Budapest metropolitan ruralities. The areas surrounding Paris are characterised by multi-level governance methods. However, an isolated form of rural governance of the rural-urban local food link can be identified in Budapest’s rural areas. Understanding the complex and dynamic interaction of food links and related activities within metropolitan areas offers the possibility of a far greater understanding of the complex and multiple links between sustainability, renewal of social interaction and cohesion.
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Sheds light on the introduction of total quality to public services. Examines the management contract for STIB, Brussels′ transport company. Reviews the four key principles…
Abstract
Sheds light on the introduction of total quality to public services. Examines the management contract for STIB, Brussels′ transport company. Reviews the four key principles established in drawing up the total quality management contract between STIB and the Brussels region, the terms and conditions of the contract, and finally methods of evaluating results.
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Christian Nitzl, Jose L. Roldan and Gabriel Cepeda
Indirect or mediated effects constitute a type of relationship between constructs that often occurs in partial least squares (PLS) path modeling. Over the past few years, the…
Abstract
Purpose
Indirect or mediated effects constitute a type of relationship between constructs that often occurs in partial least squares (PLS) path modeling. Over the past few years, the methods for testing mediation have become more sophisticated. However, many researchers continue to use outdated methods to test mediating effects in PLS, which can lead to erroneous results. One reason for the use of outdated methods or even the lack of their use altogether is that no systematic tutorials on PLS exist that draw on the newest statistical findings. The paper aims to discuss these issues.
Design/methodology/approach
This study illustrates the state-of-the-art use of mediation analysis in the context of PLS-structural equation modeling (SEM).
Findings
This study facilitates the adoption of modern procedures in PLS-SEM by challenging the conventional approach to mediation analysis and providing more accurate alternatives. In addition, the authors propose a decision tree and classification of mediation effects.
Originality/value
The recommended approach offers a wide range of testing options (e.g. multiple mediators) that go beyond simple mediation analysis alternatives, helping researchers discuss their studies in a more accurate way.
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Wenzhou Wang, Zhe Shen and Wenlong Yuan
The affordable loss (AL) heuristic, as one crucial sub-dimension of effectuation, delineates the maximum level of investment entrepreneurs are ready to lose in a worst-case…
Abstract
Purpose
The affordable loss (AL) heuristic, as one crucial sub-dimension of effectuation, delineates the maximum level of investment entrepreneurs are ready to lose in a worst-case scenario. Conflicting conceptualizations remain regarding whether entrepreneurs’ psychological traits matter for AL. Based on the narcissistic admiration and narcissistic rivalry perspective, this study investigates the relationship between chief executive officer (CEO) narcissism and AL behaviors.
Design/methodology/approach
Using data collected from the CEOs and paired vice presidents at 122 small and medium enterprises (SMEs) in mainland China, the authors intend to further explore the association between psychological traits, especially CEO narcissism and AL behaviors under environment and resource constraints (e.g. perceived uncertainty and slack resources).
Findings
The findings show that CEO admiration-based narcissism is positively related to AL behaviors in the firm. Furthermore, when firms hold more slack resources, narcissistic admiration has a stronger positive association with AL; while when the environment becomes more uncertain, narcissistic admiration has a weaker positive association with AL. In contrast, CEO rivalry-based narcissism is negatively related to AL behaviors in the firm. When the environment becomes more uncertain, narcissistic rivalry has a stronger negative association with AL.
Originality/value
This article contributes to trait-based effectuation research and suggests that individual psychological traits affect AL behaviors at the firm level, though the patterns of the relationship vary with both the type of narcissism and contexts.
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Zubeida Rossenkhan, Wee Chan Au and Pervaiz Khalid Ahmed
This study aims to contribute to subjective career success (SCS) literature using sequential mediation modeling to interrogate the inter-relationships between dimensions of SCS…
Abstract
Purpose
This study aims to contribute to subjective career success (SCS) literature using sequential mediation modeling to interrogate the inter-relationships between dimensions of SCS, including interpersonal success, financial success, job success and hierarchical success. In doing so, the research provides a nuanced understanding of career behavior among young adults using the perspective of a non-western developing context.
Design/methodology/approach
The study is operationalized using 342 survey questionnaires from Malaysian young working adults (18-34 years). Partial least square structural equation modeling is used as the main analytic tool.
Findings
The results of the study revealed that dimensions of SCS were related in a sequential mediating manner. Specifically, an individual’s interpersonal success is the foundation for one to accomplish job tasks (job success), which then leads to increased prospects for promotion (hierarchical success) and subsequently financial success.
Practical implications
These findings highlight the importance of interpersonal success as a foundation of career success and provide evidence for the study recommendation to support young working adults in building interpersonal relationships, which will help realize other forms of career success. However, the establishment of a sequential mediation pathway suggests that developing relationships alone are not sufficient. Study roles and tasks must also be designed to align with individuals’ personal goals for advancement and success.
Originality/value
The research contributes to knowledge on understanding career behavior specifically relating to the dynamics and complexities of SCS. The study sheds light on the potential limitation of operationalizing SCS as a multi-dimensional aggregate construct and provides empirical support for the proposed sequential mediation model of SCS.
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Francisco Alexei Barrios Martínez, Eduardo Sierra Gil, Davel Eduardo Borges Vasconcellos and Israel Gondres Torné
This research was carried out in response to the need to find new alternative ways of maintaining public lighting with high pressure sodium vapor lamps. The objective was to…
Abstract
Purpose
This research was carried out in response to the need to find new alternative ways of maintaining public lighting with high pressure sodium vapor lamps. The objective was to develop a public lighting maintenance management system based on fuzzy logic that guarantees maximum energy efficiency and is economically feasible.
Design/methodology/approach
A preliminary study was carried out on the complaints due to failures of public lighting for three years in the municipality of Camagüey, Cuba, determining the failure rate of each control and the time between failures, a statistical evaluation of the time between failures was carried out identifying that this variable responds to a Weibull distribution, the membership functions of the proposed four linguistic variables and the rule base for their fuzzy sets were created, obtaining as output linguistic variable the mass replacement and cleaning time.
Findings
The fuzzy logic maintenance model developed is effective in making better use of the useful life of high-pressure sodium vapor lamps, increasing the time between maintenance operations of mass lamp replacement and mass cleaning of luminaires up to 8 and 9 years, without compromising the required lighting levels and energy efficiency.
Originality/value
The literature contains very few references to the use of condition-based maintenance in this type of system, so a novel approach by a robust heuristic model of street lighting condition-based maintenance management driven by data is proposed, the model integrates through fuzzy logic all the factors that influence the progressive deterioration of these installations and maintenance actions that guarantee compliance with the established service quality standards, with the maximum energy efficiency that is economically justified.
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Jian-feng Yu, Wen-Bin Tang, Yuan Li and Jie Zhang
Modeling and analysis of dimensional variation propagation is a crucial support technology for variation reduction, product/process design evaluation and recognition of variation…
Abstract
Purpose
Modeling and analysis of dimensional variation propagation is a crucial support technology for variation reduction, product/process design evaluation and recognition of variation source. However, owing to the multi-deviation (i.e. part deviations and fixture deviations) and multi-interaction (i.e. part-to-part interaction, part-to-fixture interaction and station-to-station interaction) in assembly processes, it is difficult for designers to describe or understand the variation propagation (or accumulation) mechanism clearly. The purpose of this paper is to propose a variation propagation modeling and analysis (VPMA) method based on multiple constraints aiming at a single station.
Design/methodology/approach
Initially, part-to-part constraints (PPCs) and part-to-fixture constraints (PFCs) are applied for the multi-interaction of assembly, and multiple constraints graph (MCG) model is proposed for expressing PPCs, PFCs, parts, as well as the variation propagation relation among them. Then, locating points (LPs) are adopted for representing the deviations in constraints, and formulas for calculating the deviations of LPs are derived. On that basis, a linearized relation between LPs’ deviations and part’s locating deviations is derived. Finally, a wing box is presented to validate the proposed method, and the results indicate the methodology’s feasibility.
Findings
MCG is an effective tool for dimensional VPMA, which is shown as an example of this paper.
Originality/value
Functions of geometric constraints in dimensional variation propagation are revealed, and MCG is proposed to formulize dimensional variation propagation.
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Christopher Soo‐Guan Khoo, Armineh Nourbakhsh and Jin‐Cheon Na
Sentiment analysis and emotion processing are attracting increasing interest in many fields. Computer and information scientists are developing automated methods for sentiment…
Abstract
Purpose
Sentiment analysis and emotion processing are attracting increasing interest in many fields. Computer and information scientists are developing automated methods for sentiment analysis of online text. Most of the studies have focused on identifying sentiment polarity or orientation – whether a document, usually a product or movie review, carries a positive or negative sentiment. It is time for researchers to address more sophisticated kinds of sentiment analysis. This paper aims to evaluate a particular linguistic framework called appraisal theory for adoption in manual as well as automatic sentiment analysis of news text.
Design/methodology/approach
The appraisal theory is applied to the analysis of a sample of political news articles reporting on Iraq and the economic policies of George W. Bush and Mahmoud Ahmadinejad to assess its utility and to identify challenges in adopting this framework.
Findings
The framework was useful in uncovering various aspects of sentiment that should be useful for researchers, such as the appraisers and object of appraisal, bias of the appraisers and the author, type of attitude and manner of expressing the sentiment. Problems encountered include difficulty in identifying appraisal phrases and attitude categories because of the subtlety of expression in political news articles, lack of treatment of tense and timeframe, lack of a typology of emotions, and need to identify different types of behaviours (political, verbal and material actions) that reflect sentiment.
Originality/value
The study has identified future directions for research in automated sentiment analysis as well as sentiment analysis of online news text. It has also demonstrated how sentiment analysis of news text can be carried out.
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The purpose of this paper is to develop an equation for the synergistic corrosion of SRB and CO2 based on the D-W model.
Abstract
Purpose
The purpose of this paper is to develop an equation for the synergistic corrosion of SRB and CO2 based on the D-W model.
Design/methodology/approach
The bacterial types in the a and ß pipelines were studied by the most probable number method, and the corrosion morphology of L360 in pipeline water samples was studied by surface analysis. The corrosion rate of L360 was studied using the weight loss method. The gray correlation method was used to calculate the degree of correlation between the influencing factors of corrosion under the synergistic effect of CO2 and SRB. The curve obtained from PIPESIM software and experiments data was then fitted using multiple non-linear regression method by MATLAB software.
Findings
The equation was used to predict the corrosion of the ß pipeline for verification, and it was found that seven out of ten excavation sites were within a 20% error range.
Originality/value
Using the gray correlation method, an equation that considers synergistic corrosion of SRB and CO2 has been developed based on the D-W model. The equation could be used to predict the corrosion rate of shale gas gathering pipelines through SRB and CO2 synergistic corrosion.
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Tung Thanh Nguyen, Tho Thanh Quan and Tuoi Thi Phan
The purpose of this paper is to discuss sentiment search, which not only retrieves data related to submitted keywords but also identifies sentiment opinion implied in the…
Abstract
Purpose
The purpose of this paper is to discuss sentiment search, which not only retrieves data related to submitted keywords but also identifies sentiment opinion implied in the retrieved data and the subject targeted by this opinion.
Design/methodology/approach
The authors propose a retrieval framework known as Cross-Domain Sentiment Search (CSS), which combines the usage of domain ontologies with specific linguistic rules to handle sentiment terms in textual data. The CSS framework also supports incrementally enriching domain ontologies when applied in new domains.
Findings
The authors found that domain ontologies are extremely helpful when CSS is applied in specific domains. In the meantime, the embedded linguistic rules make CSS achieve better performance as compared to data mining techniques.
Research limitations/implications
The approach has been initially applied in a real social monitoring system of a professional IT company. Thus, it is proved to be able to handle real data acquired from social media channels such as electronic newspapers or social networks.
Originality/value
The authors have placed aspect-based sentiment analysis in the context of semantic search and introduced the CSS framework for the whole sentiment search process. The formal definitions of Sentiment Ontology and aspect-based sentiment analysis are also presented. This distinguishes the work from other related works.