Wu Deng, Meng Sun, Huimin Zhao, Bo Li and Chunxiao Wang
This study aims to propose a new airport gate assignment method to effectively improve the comprehensive operation capacity and efficiency of hub airport. Gate assignment is one…
Abstract
Purpose
This study aims to propose a new airport gate assignment method to effectively improve the comprehensive operation capacity and efficiency of hub airport. Gate assignment is one of the most important tasks for airport ground operations, which assigns appropriate airport gates with high efficiency reasonable arrangement.
Design/methodology/approach
In this paper, on the basis of analyzing the characteristics of airport gates and flights, an efficient multi-objective optimization model of airport gate assignment based on the objectives of the most balanced idle time, the shortest walking distances of passengers and the least number of flights at apron is constructed. Then an improved ant colony optimization (ICQACO) algorithm based on the ant colony collaborative strategy and pheromone update strategy is designed to solve the constructed model to fast realize the gate assignment and obtain a rational and effective gate assignment result for all flights in the different period.
Findings
In the designed ICQACO algorithm, the ant colony collaborative strategy is used to avoid the rapid convergence to the local optimal solution, and the pheromone update strategy is used to quickly increase the pheromone amount, eliminate the interference of the poor path and greatly accelerate the convergence speed.
Practical implications
The actual flight data from Guangzhou Baiyun airport of China is selected to verify the feasibility and effectiveness of the constructed multi-objective optimization model and the designed ICQACO algorithm. The experimental results show that the designed ICQACO algorithm can increase the pheromone amount, accelerate the convergence speed and avoid to fall into the local optimal solution. The constructed multi-objective optimization model can effectively improve the comprehensive operation capacity and efficiency. This study is a very meaningful work for airport gate assignment.
Originality/value
An efficient multi-objective optimization model for hub airport gate assignment problem is proposed in this paper. An improved ant colony optimization algorithm based on ant colony collaborative strategy and the pheromone update strategy is deeply studied to speed up the convergence and avoid to fall into the local optimal solution.
Details
Keywords
Melinda F. Brown and Deborah L. Lilton
This chapter focuses on ways libraries can ensure the services and collections they provide do not exclude bisexual people and indulge in the “bi erasure” that is otherwise so…
Abstract
This chapter focuses on ways libraries can ensure the services and collections they provide do not exclude bisexual people and indulge in the “bi erasure” that is otherwise so prevalent in society. The authors share best practices for public, academic, and school libraries to add bisexual/pansexual titles to their collections, as well as provide programmatic tips that include the larger bisexual/pansexual community. Most importantly, the authors highlight community partners, advocacy organizations, or non-profits that can serve as potential collaborators as librarians brainstorm programming for bisexual/pansexual patrons. This chapter also contains staff training guidelines and resources for creating a more welcoming environment for bisexual/pansexual patrons. The chapter concludes with a list of resources that will help librarians make more inclusive collections’ decisions and resource guides. It’s purpose is to help libraries better serve bisexual/pansexual patrons who are undoubtedly already library users.
Details
Keywords
Lobat Asadi and Salma Ali
This chapter identifies the broad interdisciplinary ideologies of entitlement in order to situate and understand the potential theoretical informants of excessiveness in teacher…
Abstract
This chapter identifies the broad interdisciplinary ideologies of entitlement in order to situate and understand the potential theoretical informants of excessiveness in teacher entitlement. Although the authors' perspectives and experiences on the theme of entitlement are located in the US educational system, this is accompanied by an awareness of the need to examine the topic internationally since the topic needs to “be reconsidered in terms of contextual variables.”
Psychological and organizational entitlement were the prevalent strains of entitlement that emerged in the reviewed literature and “academic entitlement” specific to the field of education. Therefore, three strands, psychological, organizational and academic, form the thematic categories for this scoping literature review.
Most literature on “academic entitlement” deals with excessive entitlement amongst students. No reference to excessive teacher entitlement was found. However, specific gaps were found in: (1) what qualifies as excessive teacher entitlement, (2) research scholarship on teacher entitlement, and (3) entitlement studies specifically aimed at global reach and applicable to teachers.
The theoretical informants of teacher entitlement identified in this study indicate that the phenomenon goes beyond individual mindset to encompass the mediation of sociocultural and political factors in its construction, thus rendering a simple theory of excessiveness in association with teacher entitlement improbable at this time.
Details
Keywords
THE need for accuracy in estimating the component weights of project designs cannot be over‐emphasized, forming, as they do, an important part of the stressing and performance…
Abstract
THE need for accuracy in estimating the component weights of project designs cannot be over‐emphasized, forming, as they do, an important part of the stressing and performance calculations. Of the items controlled by the airframe manufacturer, the wing is not only the heaviest (often representing as much as 50 per cent of the structural weight), but is also the most difficult to predict. In order to arrive at a suitable figure, numerous formulae have been used in the past, these falling into two broad categories:
Martha Prata-Linhares, Helena Amaral da Fontoura and Maria Alzira de Almeida Pimenta
The context of this study is Brazil, which has seen more than a decade of expansion in higher education and increased access to public universities. Our investigation deals with…
Abstract
The context of this study is Brazil, which has seen more than a decade of expansion in higher education and increased access to public universities. Our investigation deals with the perceptions of novice faculty members or “professors”, as they are addressed in Brazil, on entitled behavior at universities. These professors participants are from institutions located in three different states in Brazil. We wanted to find out how these newcomers to university teaching perceived entitled attitudes in faculty–students and faculty–peer interactions. The chapter includes possible implications for relations in the workplace and discusses the gaps between expectations of the nature of social relationships in the universities among faculty and between faculty and students, on the one hand, and reality, on the other. The research uses narrative as its method of inquiry. This chapter sheds light on an issue that brings discomfort to professors and students. A mutual desire for cooperative and horizontal relations is expressed.
Details
Keywords
Magdalena Kohout-Diaz and Marie-Christine Deyrich
Our investigation of the emerging issue of teacher entitlement is viewed from the perspective of researchers trying to make sense of the concept with the intention of exploring…
Abstract
Our investigation of the emerging issue of teacher entitlement is viewed from the perspective of researchers trying to make sense of the concept with the intention of exploring its links to inclusive educational practice, teacher education and research. This chapter is therefore mainly conceptual, focusing on the limits and possibilities offered by the extension of the concept of entitlement, first relating to students, now extended to the teaching profession. The concept of entitlement is gaining currency principally in the Anglo-Saxon literature but should also be reconsidered in relation to contextual influences. In the educational field, debates denote several ‘displacements of concepts’, as shown in the extensive reviews and analyses of the concept of entitlement attitudes we undertake in this work. We first discuss developments and interpretations of the concept of entitlement specific to different disciplines in the literature. Then we undertake a contextual reframing based on a redefinition of the concept drawing on input from empirical research data, which emphasizes the challenges encountered when dealing with the phenomena of social cohesion, ethics and cultural diversity in education. The findings highlight the potential benefits of integrating the concept of teacher entitlement into valid strategies for implementing an inclusive and ethical educational process.
Details
Keywords
Wai Kam Yu, Emma Hongshuo Liu and Iris Po Yee Lo
The purpose of this paper is to focus on the difficulties faced by women with same-sex desire (commonly known as “lalas”) in China in securing defamilisation and familisation. It…
Abstract
Purpose
The purpose of this paper is to focus on the difficulties faced by women with same-sex desire (commonly known as “lalas”) in China in securing defamilisation and familisation. It has two objectives – to show the challenges lalas face in organizing their life in interaction with the family, work economy and government; and to discuss how these challenges make women with same-sex desire difficult to secure defamilisation and familisation. Familisation refers to the extent to which people’s participation in the family is increased; whereas defamilisation refers to the extent to which people’s participation in the family is reduced.
Design/methodology/approach
The authors conducted literature review and in-depth interviews with 20 Chinese women with same-sex desire in Beijing to collect and analyze data for fulfilling the two objectives.
Findings
Lalas face serious challenges in their daily lives – they receive insufficient support from the government, work economy and family in organizing their life and their freedom is constrained by these three sectors. These challenges render lalas difficult to achieve several types of defamilisation/familisation (the “carer,” “care receiver,” “provider of financial support” and “receiver of financial support”).
Originality/value
Few defamilisation and familisation studies focus on women with same-sex desire. No studies on defamilisation and familisation of lalas in China have been done before. With the focus on lalas, the paper discovers new causes of the difficulties in securing defamilisation/familisation, and possible solutions to these difficulties.
Details
Keywords
Bruce G. Barnett, Alan R. Shoho and Nathern S.A. Okilwa
When assistant principals experience positive mentoring and professional development, they can obtain valuable knowledge and leadership skills from these learning opportunities…
Abstract
Purpose
When assistant principals experience positive mentoring and professional development, they can obtain valuable knowledge and leadership skills from these learning opportunities. To better understand the formal and informal mechanisms assistant principals use to expand their knowledge and skills, the purpose of this paper is to examine important advice mentors provided for them and the professional learning activities that prepare them for their school leadership roles.
Design/methodology/approach
Semi-structured interviews with 69 elementary, middle, and high school assistant principals were conducted. Questions focused on the advice mentors have provided and significant learning experiences that have aided in their growth as school leaders.
Findings
Results reveal that assistant principals greatly appreciate insights from mentors about how to enhance decision-making skills, improve people and communication skills, reflect on their personal qualities and capabilities, and clarify their values and beliefs. Their preferred means for professional growth is to work with former and current administrators they trust and respect.
Originality/value
This study goes beyond examining the structural and procedural aspects of mentoring by describing highly valued advice provided by mentors affecting assistant principals’ professional development and growth. For mentoring to be effective, this study suggests that mentors should provide opportunities for assistant principals to develop their decision-making, people, and communication skills as well to clarify their personal capabilities, values, and beliefs.
Details
Keywords
Miranda Mirosa, Harriet Munro, Ella Mangan-Walker and David Pearson
Social marketing and other types of targeted behaviour change interventions should appeal to an individual’s personal values in order to improve their effectiveness. However…
Abstract
Purpose
Social marketing and other types of targeted behaviour change interventions should appeal to an individual’s personal values in order to improve their effectiveness. However, there is currently little understanding of what these values are in relation to food waste. The purpose of this paper is to identify the values underpinning the specific behaviour of plate waste created in a residential foodservice setting.
Design/methodology/approach
In semi-structured interviews (n=50) laddering techniques were used to identify links from behaviours through individual’s rationalisation for that behaviour to their personal values. The aim of the questioning was to uncover underlying drivers that lead to plate waste as well as those barriers to reducing it.
Findings
The values identified as being most important are hedonism and self-direction. The specific aspects of these values for plate waste reduction interventions are not compromising on the individual’s enjoyment of the meal and meeting their health goals. Effective interventions include pre-ordering meals, reducing food options provided, reducing plate size, removing food tray and finally, information campaigns to raise awareness.
Originality/value
The study provides insights into the personal values that influence behaviours resulting in plate waste. The study is the first to determine the links between this behaviour, rationalisations for that behaviour and personal values.