Search results

1 – 10 of 115
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 1 May 1996

Windy Chen and Brian H. Kleiner

Title VII of the Civil Rights Act of 1964 mandates equal employment opportunity by providing that: It shall be an unlawful employment practice for an employer to fail or refuse to…

70

Abstract

Title VII of the Civil Rights Act of 1964 mandates equal employment opportunity by providing that: It shall be an unlawful employment practice for an employer to fail or refuse to hire or discharge any individual, or otherwise discriminate against any individual with respect to his compensation, terms, conditions, or privileges of employment because of such individual's race, colour, religion, sex, or national origin.

Details

Equal Opportunities International, vol. 15 no. 5
Type: Research Article
ISSN: 0261-0159

Access Restricted. View access options
Article
Publication date: 4 July 2018

Jinwu Xiang, Tong Shen and Daochun Li

Obstacle and wind field are common environmental factors for mini unmanned helicopter (MUH) flight. This paper aims to develop a trajectory planning approach guiding MUH to avoid…

211

Abstract

Purpose

Obstacle and wind field are common environmental factors for mini unmanned helicopter (MUH) flight. This paper aims to develop a trajectory planning approach guiding MUH to avoid static and dynamic obstacles and to fly in steady uniform or boundary-layer wind field.

Design/methodology/approach

An optimal control model including a nonlinear flight dynamics model and a cubic obstacle model is established for MUH trajectory planning. Radau pseudospectral method is used to generate the optimal trajectory.

Findings

The approach can plan reasonable obstacle-avoiding trajectories in obstacle and windy environments. The simulation results show that high-speed wind fields increase the flight time and fluctuation of control inputs. If boundary-layer wind field exists, the trajectory deforms significantly and gets closer to the ground to escape from the strong wind.

Originality/value

The key innovations in this paper include a cubic obstacle model which is straightforward and practical for trajectory planning and MUH trajectory planning in steady uniform wind field and boundary-layer wind field. This study provides an efficient solution to the trajectory planning for MUH in obstacle and windy environments.

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 5
Type: Research Article
ISSN: 1748-8842

Keywords

Access Restricted. View access options
Book part
Publication date: 1 April 2003

Peter M. Hall

It is a sunny, windy, and cool spring day as I sit down to write my reflections on the preceding papers. It is the end of another semester and the final grades have been turned…

Abstract

It is a sunny, windy, and cool spring day as I sit down to write my reflections on the preceding papers. It is the end of another semester and the final grades have been turned in. Forty years ago I began my academic career at the University of Iowa and two weeks ago my departmental colleagues and my family staged a symposium to mark my retirement. On my desk, just to my right, is a draft of an article requiring my next attention for a special issue of Symbolic Interaction on the past and future of the perspective. So, it feels fitting to comment on my career and scholarly corpus, and the sense-making and framing of it by my gracious, learned and most collegial fellow travelers. I am honored by their willingness to participate in this endeavor and their generous accountings and interpretations. But I can write no further without acknowledging the respectful but strong directing of Shing-Ling Chen in planning and producing the session and the publication of these papers. She gets us all organized, despite our tendencies to procrastination.

Details

Studies in Symbolic Interaction
Type: Book
ISBN: 978-0-76231-009-8

Access Restricted. View access options
Article
Publication date: 29 May 2020

Jingxian Xu, Huijuan Liu, Yunyi Wang and Jun Li

This study aims to investigate the heat transfer mechanism of the uniforms used by people working in hot, humid and windy environments. Furthermore, the effectiveness of an…

202

Abstract

Purpose

This study aims to investigate the heat transfer mechanism of the uniforms used by people working in hot, humid and windy environments. Furthermore, the effectiveness of an opening structure added to the armpit of the uniforms in improving thermal comfort was comparatively examined.

Design/methodology/approach

A set of uniforms was tested with the opening at the armpit alternatively zipped or unzipped. Thermal manikin and human tests were performed in a climatic chamber simulating the specific environmental conditions, including wind speeds at four levels (0.15, 0.5, 2, 4 m/s) and relative humidities at two levels (50 and 85%). Static and dynamic thermal insulations of clothing (IT) were examined by the thermal manikin tests. The human bodies' thermal responses, including heart rates (HR), eardrum temperatures (Te), skin temperatures (Tsk) and subjective perceptions, were given by the human tests.

Findings

Special mechanisms of heat transfer in the specific uniforms used in tropical monsoon climates were revealed. Reductions on IT were caused by the movement of the human body and the environmental wind, and the empirical equations would underestimate this reduction. The opening at the armpit was able to prompt more heat transfer under dynamic condition, with reducing the IT by 11.8%, lowering the mean Tsk by 0.92°C, and significantly improving the subjective perceptions (p < 0.05). The heat exhaustion was alleviated with lowering the Te by 0.32°C.

Originality/value

This study managed to improve the thermal performance of uniforms for workers under unforgiving conditions. The evaluation and design methods introduced by this study provided practical guidance for similar products with strict dress codes and cost control requirements based on the findings from thorough product tests and analysis.

Details

International Journal of Clothing Science and Technology, vol. 32 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Access Restricted. View access options
Article
Publication date: 10 March 2023

Ummi Nur Afinni Dwi Jayanti and Miza Nina Adlini

Despite numerous kinds of research regarding the potential of lesson study (LS) in internship and microteaching in teacher education curricula, studies examining the adaptation of…

223

Abstract

Purpose

Despite numerous kinds of research regarding the potential of lesson study (LS) in internship and microteaching in teacher education curricula, studies examining the adaptation of LS in the lesson planning (LP) course have not been established. To fill this gap, this study aims to explore the perceptions of pre-service biology teachers of an adapted LS in the LP course toward their instructional design skills and teaching competency.

Design/methodology/approach

This study opted for basic qualitative studies. The participants were eleven pre-service biology teachers in their third year who had already taken a LP course. Data were collected through semi-structured interviews. Collected data were then transcribed and thematically analyzed using grounded theory and focused on participants' perceptions about the development of their teaching competency in lesson planning through LS.

Findings

The findings revealed that participants appreciated the planning and consultation phases, teaching practice, peer observation as well as observer feedback from the reflection phase in supporting the development of their basic teaching skills. There was also a change in their perceptions related to the concept of teaching.

Originality/value

The findings of this study offer insight regarding the benefits and challenges of involving pre-service biology teacher students in the LS for biology teacher education programs with a focus on the method or LP course.

Details

International Journal for Lesson & Learning Studies, vol. 12 no. 3
Type: Research Article
ISSN: 2046-8253

Keywords

Access Restricted. View access options
Article
Publication date: 6 June 2016

Chupo Ho, Jintu Fan, Edward Newton and Raymond Au

Maintaining air circulation between the wearer and garment layer is crucial for activating heat and moisture transfer from the body. If an air gap is trapped, air circulation may…

919

Abstract

Purpose

Maintaining air circulation between the wearer and garment layer is crucial for activating heat and moisture transfer from the body. If an air gap is trapped, air circulation may become ineffective and the ventilation of the garment is, thus, hindered. To maintain and extend the air gap, this study aims to propose a design method that involves placing spacer blocks underneath the garment to prevent the fabric from clinging directly to the skin.

Design/methodology/approach

To study the application of this design method, a series of T-shirts were produced and tested using a thermal manikin in standing and walking postures. All the T-shirts were made of fabric ostensibly manufactured to have high air permeability. Porous mesh fabric was used to construct the vented panels on the T-shirts. The test was conducted in a chamber with controlled temperature, relative humidity and wind velocity. Total thermal insulation (Rt) and moisture vapour resistance (Ret) were measured.

Findings

The test results showed that extension of the air gap between wearer and fabric provided higher ventilation to the wearer if the vented panels were also present on the T-shirts. Different placements of the vented panels on the T-shirts also affected the heat and moisture transfer from the thermal manikin.

Research limitations/implications

Due to limited resources, the evaluation of total thermal insulation and moisture vapour resistance was based on the testing result from a thermal manikin instead of any subjective wearer trial.

Practical implications

This research can contribute to the clothing designer who is developing function wear for a better ventilation.

Social implications

This research can contribute to the clothing designer who is developing function wear for a better ventilation.

Originality/value

This study aimed to further develop a new design concept in T-shirt design by improving the construction of the spacer blocks. Fabric with higher air and water vapour permeability was used to determine to what extent this design method is applicable to higher performance on heat and moisture transfer.

Details

Research Journal of Textile and Apparel, vol. 20 no. 2
Type: Research Article
ISSN: 1560-6074

Keywords

Access Restricted. View access options
Article
Publication date: 13 March 2017

Yuxiang Chen, Mutellip Ahmat and Zhong-tang Huo

Irregular windy loads are loaded for a wind turbine. This paper aims to determine the form of gear failure and the working life of the gear system by assessing the dynamic…

309

Abstract

Purpose

Irregular windy loads are loaded for a wind turbine. This paper aims to determine the form of gear failure and the working life of the gear system by assessing the dynamic strength of gears and dynamic stress distribution.

Design/methodology/approach

The helical planetary gear system of the wind turbine growth rate gearbox was investigated, and while a variety of clearance and friction gear meshing processes were considered in the planetary gear system, a finite element model was built based on the contact–impact dynamics theory, solved using the explicit algorithm. The impact stress of the sun gear of the planetary gear system was calculated under different loads. An integrated planetary gear meshing stiffness, and the error of system dynamic transmission error were investigated when the planetary gear meshes with the sun or ring gears.

Findings

The load has little effect on the sun gear of the impact stress which was known. The varying stiffness is different while the planetary gear meshes with the sun and ring gears. There were differences between the planetary gear system and the planetary gear, and with load, the planetary gear transmission error decreases.

Originality/value

This study will provide basis knowledge for the planetary gear system.

Details

Industrial Lubrication and Tribology, vol. 69 no. 2
Type: Research Article
ISSN: 0036-8792

Keywords

Access Restricted. View access options
Article
Publication date: 5 March 2018

Hakan Ülker, Cemal Baykara and Can Özsoy

A fixed wing unmanned aerial vehicle (FWUAV) is targeted to perform processor in the loop (PIL) simulations for the flight scenarios such as straight and level, level climb, level…

149

Abstract

Purpose

A fixed wing unmanned aerial vehicle (FWUAV) is targeted to perform processor in the loop (PIL) simulations for the flight scenarios such as straight and level, level climb, level turn, climbing turn and level steady heading sideslip under windy conditions such as steady wind (SW) and wind gust (WG) in a desired and controlled manner.

Design/methodology/approach

The constrained multi-input–multi-output (MIMO) lateral and longitudinal linear models-based model predictive controllers (MPCs) which are proposed in a previous study (Ulker et al., 2017) are tested in the PIL simulations under specified windy conditions. BeagleBone Black Rev C is used as a target hardware or processor in the PIL simulations.

Findings

The results of the PIL simulations show that the MPCs proposed in the previous study can achieve satisfactory performance and flying qualities for the all flight scenarios handled in this paper under windy conditions.

Practical implications

The MPCs proposed in the previous study can be easily implemented in the real world to a low-cost and small-sized board like BeagleBone Black Rev C which is used in this paper.

Originality/value

The proposed MPCs in the previous study which are capable of providing more flexibility in terms of tracking complex trajectories are showed to be able to be implemented to real system by means of PIL simulations under the changeable windy conditions which are difficult for performance tests.

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

Access Restricted. View access options
Article
Publication date: 20 October 2023

Omar Imad Shukri Windi and Ali Sadik Gafer Qanber

The purpose of this study is to extract the response of the simultaneous low-velocity impact of multiple impactors on a porous functionally graded (FG) aluminum plate.

20

Abstract

Purpose

The purpose of this study is to extract the response of the simultaneous low-velocity impact of multiple impactors on a porous functionally graded (FG) aluminum plate.

Design/methodology/approach

To design a porous FG structure, a series of functions are applied using the porosity coefficient, and mechanical properties including Young’s modulus, shear modulus and the density of the porous structure are presented as a function of the axis placed in the direction of the plate thickness. The first-order shear deformation theory of the plate is used. To simulate the contact process between each impactor and the plate, a nonlinear Hertz contact force is considered for that impactor independently.

Findings

ABAQUS finite element software is used for the verification process of the theorical equations. The effects of porous function type, radius and initial velocity of impactor are investigated for the simultaneous impact of five impactors on porous FG aluminum plate with a simply supported boundary condition. Histories of contact force and displacement of the impactor placed in the center of the beam are analyzed in detail with the changes of the mentioned parameters.

Originality/value

Due to the advantages of porous aluminum plate such as high energy absorption and low weight, such structures may be subjected to the simultaneous impact of multiple impactors, which is studied in this research.

Details

World Journal of Engineering, vol. 21 no. 6
Type: Research Article
ISSN: 1708-5284

Keywords

Access Restricted. View access options
Article
Publication date: 11 May 2022

Chris I. Enyinda, Charles Blankson, Guangming Cao and Ifeoma E. Enyinda

Rising expectations for exceptional customer experiences demand strategic amalgamation of cross-functional, customer-focused teams (marketing/sales/service departments). However…

809

Abstract

Purpose

Rising expectations for exceptional customer experiences demand strategic amalgamation of cross-functional, customer-focused teams (marketing/sales/service departments). However, the long history of interface conflicts between functional teams continues to attract research attention. Past research has given more attention to conflicts between marketing and sales teams than to triadic interface conflict between custom-focused teams and their sub-conflicts in a business-to-business (B2B) sales process. The purpose of this research paper is to quantify the triadic interface conflicts and associated sub-conflicts between customer-focused teams, discuss conflict resolution strategies and perform a sensitivity analysis (SA) to give a fuller account of functional team conflict.

Design/methodology/approach

Multi-criteria decision-making (MCDM) based in the analytic hierarchy process (AHP) is proposed for identifying and resolving conflicts in customer-focused team interfaces. A group of 30 managers of a large electronics company participated in this research. The authors collected the data from customer-focused team managers during training sessions on interface conflicts and conflict management/resolution strategies. The authors perform SA to test the robustness of conflict resolution strategy rankings.

Findings

The findings reveal that managers adjudge task as the most crucial conflict attribute driving teams apart, followed by lack of communication. For the sub-conflicts, managers considered how to do the task as the most important conflict attribute, followed by lack of regular meetings. For conflict resolution strategies, managers regarded collaboration or integration as the overall best strategy, followed by compromise. Leveraging the AHP-based MCDM to resolve customer-focused team interface conflicts provides managers with the confidence in the consistency and the robustness of these solutions. By testing the SA, it is also discovered that the final outcome stayed robust (stable) regardless when the priorities of the main criteria influencing the decision are increased and decreased by 5% in every combinations.

Research limitations/implications

This study examined only a large B2B company in the electronics industry in African and Middle East settings, focusing on interface conflicts among customer-focused departments. Future research could address these limitations.

Practical implications

This paper advances our understanding of customer-focused team interface conflicts in a B2B sales process. It also provides valuable insights on effective management of major and sub-interface conflicts. This paper provides a framework for and practical insights into how interface conflicts that are prevalent in marketing, sales and service sectors can be resolved to improve customer experience and business performance.

Originality/value

This study contributes to the literature by developing an AHP-based MCDM, which not only extends our conceptual understanding of the interface conflicts between customer-focused teams by emphasizing their triadic nature but also provides valuable strategies and insights into the practical resolution of such conflicts in a B2B firm’s sales process. Methodologically, SA is valuable to ensuring the robustness of the conflict resolution strategies’ rankings that will influence relevant pragmatic decision-making.

1 – 10 of 115
Per page
102050