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The purpose of this paper is to perform a numerical assessment of two recently proposed extensions of the Gurson‐Tveegard‐Needleman ductile damage constitutive model under low stress triaxiality.

One of the most widely used ductile damage models is the so‐called Gurson‐Tveegard‐Needleman model, commonly known as GTN model. The GTN model has embedded into its damage formulation the effects of nucleation, growth and coalescence of micro‐voids. However, the GTN model does not include void distortion and inter‐void linking in the damage evolution. To overcome this limitation, some authors have proposed the introduction of different shear mechanisms based on micromechanical grounds or phenomenological assumptions. Two of these constitutive formulations are reviewed in this contribution, numerically implemented within a quasi‐static finite element framework and their results critically appraised.

Through the analysis of the evolution of internal variables, such as damage and effective plastic strain, obtained by performing a set of numerical tests using a Butterfly specimen, it is possible to conclude that the extended GTN models are in close agreement with experimental evidence.

Even though the results obtained with the modified GTN models have shown improvements, it can also be observed that both shear mechanisms have inherent limitations in the prediction of the location of fracture onset for some specific stress states.

From the results reported, it is possible to identify some shortcomings in the recently proposed extensions of the GTN model and point out the direction of further improvements.

IT has been the practice at the official Air Ministry Testing Establishments at Martlesham and Felixstowe to issue with each complete performance report an analytical picture of the performance. This picture is commonly called “Figure 4” because it appeared as Fig. 4 of R. & M. 1140. It is reproduced in Fig. 1. Its physical significance is by no means apparent, and to the practical engineer who appreciates physical significance mainly through his visual imagination it must sometimes have been more mystifying than simplifying. But, as is shown in what follows, the physical significance can be explained naturally and elegantly in terms of the “unit plane” of unit size and wing loading.

IT has long been a subject of comment at Martlesham Heath that practically all the aircraft put through performance trials there take approximately the same time to reach the service ceiling—about 40 minutes.

THE fact that the engine power in full‐throttle flight is governed by thermodynamic conditions involving the atmospheric pressure and temperature at the air intake; while the engine power in throttled flight is, by adjustment of the throttle position, entirely at the choice of the pilot, is the cause of certain fundamental differences in the correction of full‐throttle and throttled tests to standard conditions. For, whereas full‐throttle flight, in which the aerodynamic forces are subject to a thermodynamical limiting condition, involves both aerodynamics and thermodynamics, throttled flight is purely aerodynamic. A simple illustration is provided by throttled level flight in which the throttle is adjusted until the airscrew thrust is equal to the drag at the air speed selected by the pilot; that is, the engine power is fixed by aerodynamic conditions alone.

This special “Anbar Abstracts” issue of the Marketing Intelligence & Planning is split into seven sections covering abstracts under the following headings: Marketing Strategy; Customer Service; Sales Management/Sundry; Promotion; Marketing Research/Customer Behaviour; Product Management; Logistics and Distribution.

Materiality is an ill‐defined yet important concept in auditing. However, lack of an auditing guideline exposes auditors to possible litigations due to failure to detect material misstatement in the financial statements. This paper assesses decisions by UK courts on materiality thresholds. The results from 28 selected cases failed to reveal any consistency in the adoption of materiality thresholds. A guideline is urgently needed by the Auditing Practices Board to increase consistency in decisions on material transactions/events.

This paper aims to describe an instructional study of three cases of work‐based education students (in co‐operative education in Canada), described by their teachers as ranging from high achieving to low achieving.

The three students are given metacognitive instruction to enhance their workplace learning. The instruction is based on findings from a population of recent case studies of learning in the workplace and is shared with the students, with their teachers, and with their workplace supervisors. Interviews and observations are used to describe the variable success of metacognitive instruction in the three workplace settings.

The paper finds that, while the teachers do not implement the materials fully, both the employers and the students find the metacognitive questions that make up the instructional materials to be useful and have suggestions for how the instructional materials should be used in workplaces. The instructional materials are appended.

The paper provides useful information on enhancing their workplace learning among work‐based education students.

The purpose of this paper is to describe the assessment practices reported by Canadian educators and workplace supervisors involved in exemplary work‐based education (WBE) programs for high‐school students.

Six focus groups were conducted, four with teachers and coordinators and two with workplace supervisors from exemplary WBE programs, to identify the features of these exemplary programs that prepare adolescents to participate in WBE, that prepare workplace supervisors to mentor WBE students, and that characterize the day‐to‐day interactions in the workplace through which adolescents learn. Surprisingly, in the absence of any questions directly focused on assessment, participants spoke at length and with passion about the purpose and nature of assessment in their outstanding WBE programs.

Analyses of these interviews revealed six themes that describe the range of assessment practices associated with these three features of exemplary programs: identification of student interests and abilities; student self‐assessment; communication of expectations and responsibilities; contextualized assessment; collaboration between school and workplace; and connections between assessment and instruction.

The findings highlight practical assessment procedures, for teachers and workplace supervisors, which facilitate the meaningful participation and learning of students in WBE programs and of workers in the workplace.

THE usual methods for obtaining data on the hydrodynamic characteristics of flying boats during flight tests involve motion pictures of an instrument panel and records of oscillograph traces. The analysis of the photographic records is so time consuming that the results are not always available when needed, and in many cases more data are accumulated than is physically possible to analyse. In order to conserve manpower and to obtain directly usable data, new methods have been developed for making quantitative hydrodynamic flight tests. The test techniques were devised to relate, whenever possible, numerical values to sensations experienced by the pilot of a flying boat during take‐off and landing.

The purpose of this paper is to provide a better understanding of golf tourism in a Mediterranean golf resort located in Italy. Based on a systematic literature review, this research develops and tests a context-specific “integrated model” in order to shed further light on the complex discordance in the literature with new empirical data. Furthermore, the present study attempts to establish a framework to provide a better understanding of golf tourism behavior in terms of specific segmentation profiles. This will contribute to a more targeted approach to marketing and promotional activities.

This study applied structural equation modeling to verify the path relationship of golf tourists quality, perceived value, satisfaction and behavioral intention. The final step was to include the suggested moderator variables (age and playing experience) into the model in order to gain further insights. Furthermore, multiple group analyses were calculated in comparing two sub-samples.

This study provides an improved understanding of the role of quality, perceived value, satisfaction on behavioral intentions in golf tourism. Four out of the six hypotheses of the study were confirmed. Precisely, perceived value did not have a direct significant effect on behavioral intentions and quality was not significantly related to overall satisfaction. The empirical results suggest that all three variables appear to have a direct effect on golf tourists’ behavioral intention. Satisfaction was determined to be the best predictor, followed by quality and perceived value. Furthermore, the moderating variables exert a significant influence on some of the proposed relationships.

First, the current model explores the impact of only two moderator variables of golf tourists such as age and years of playing experience. Second, the study is limited to a Mediterranean destination; the analysis and measurements should thus be replicated in different contexts to test their adaptability to different golf tourism destinations. Another important limitation is the cross-sectional nature of the data.

This research provides important insights the ability to generalize this chain of effects across golf tourists under significantly different conditions. Furthermore, it has important implications for managers of companies that have plans to implement adequate market segmentation strategies in order to expand their business. Based on the finding it is crucial for managers in the golf industry to focus on perceived value for young tourists golfers and on quality for experienced golfers. Managers should customize relationship management programs and develop promotional and pricing strategies for younger golf tourists and exclusive quality services for more experienced golfers.

As urban lifestyle life becomes more prevalent in modern society, golf tourism relaxes and gives back a sense of calm and peace of mind to the players. Escape from everyday demands and duties is another classic travel motive; many want to get away from the stress and boredom of their daily lives and fill their holidays with a range of exciting and new physically challenging experiences. Therefore, it can be seen that the term of environment conservation improve the sustainability of golf sport tourism in a Mediterranean destination.

The inclusion of moderating variables in the proposed model is one of the unique aspects of this research. Dealing with the different groups of golf tourists, the authors put the emphasize on the importance of using two types of appropriate tools: on the one hand, grouping tools which are appropriate to the tourism consumption (demographic variables), and on the other hand, grouping tools which are appropriate to the study of the sports market (years of a plying experience). Combining these two types of criteria will lead marketers to more accurate analysis of golf tourists’ behavior.