Search results1 – 10 of over 1000
Mechanical reliability (variations in mechanical properties) of fused deposition modeled (FDMed) short-fiber-reinforced composites are unknown, which limits wider and…
Mechanical reliability (variations in mechanical properties) of fused deposition modeled (FDMed) short-fiber-reinforced composites are unknown, which limits wider and safer use of these composites. Accordingly, this paper aims to investigate the mechanical reliability of FDMed model material short-carbon-fiber-reinforced acrylonitrile butadiene styrene (SCFR-ABS). A new vibration-assisted FDM (VA-FDM) process was used to reduce porosity.
Tensile tests were performed on FDMed SCFR-ABS produced with and without vibrations. Weibull analysis was performed to quantify the variation in fracture strength, tensile strength, strain at break and strain at tensile strength.
Introduction of vibrations to the extrusion head during FDM decreased the inter-bead porosity in SCFR-ABS and thus improved elastic modulus, toughness, fracture strength, tensile strength and strain at break. Weibull modulus of fracture strength increased from 25 to 57 with vibrations.
The reported Weibull analysis offers a practical design guideline to predict failure rates at specific service stresses.
A detailed Weibull analysis of the variations in the mechanical properties of FDMed SCFR-ABS was performed for the first time. A new vibration-assisted FDM process was reported to reduce inter-bead porosity in FDMed composites.
The purpose of this paper is to address the recent calls for an in-depth investigation of the entrepreneurial marketing (EM) practices of small businesses and a further…
The purpose of this paper is to address the recent calls for an in-depth investigation of the entrepreneurial marketing (EM) practices of small businesses and a further conceptual development of EM under market uncertainty. Drawing on the EM mix (i.e. person, purpose, practices and process), the authors aim to conceptualise EM under market uncertainty through principles of effectual networking.
The authors conducted an in-depth case study of an owner-manager who networks with many different stakeholders to create new markets for wool in the Norwegian wool industry.
Situated within the creative and craft-based industries, the study demonstrates that market uncertainty can be reduced through effectual networking to produce highly beneficial outcomes for small businesses. The findings give rise to a new model of the EM mix under uncertainty, emphasising the role of the owner-manager (i.e. person) and the purpose as the outset and driving force of the EM process. These two elements constitute the initial means in the means-driven EM process and the foundation for subsequent EM practices. The person, purpose and practices interact iteratively, and focal effectual networking principles guide EM practices.
This paper expands and contextualises existing theories on EM under market uncertainty by introducing the effectual networking perspective. This represents a hitherto under-investigated area of research in small business marketing.
When James Conant visited Australia in 1951 he unwittingly entered an existing, lengthy debate about the value of university‐based knowledge in Australia. The Second World…
When James Conant visited Australia in 1951 he unwittingly entered an existing, lengthy debate about the value of university‐based knowledge in Australia. The Second World War, with its significant reliance on academic expertise, had suggested that if knowledge could win wars, the labour of academic staff could be considered to normally have social and economic value to the nation. In 1951 Conant had no way of foreseeing that steps made, in this light, at Federal level during and after the war, would culminate in the 1957 Review of Universities in Australia, chaired by Sir Keith Murray, and the injection of a large amount of funding into the university system. Conant’s confidential report to the Carnegie Corporation does show that he saw the system in desperate need of funding, which wasa reality that everyone agreed upon.1 The long debate included options for university funding and the potential change to the character of universities if the community, rather than the cloister, was to determine the purpose and character of knowledge. Conant’s report reflects this debate, centring (as many other participants did as well) on the value universities would gain if they were more obviously useful and relevant to industry and if their reputation was less stained by elitism and arrogance. Conant could not gather sufficient data in his visit to identify the nuances of this long discussion nor could he see the depth and spread of its influence over the decade or so preceding his visit. As a result, his particular agenda seems to obscure the perception of the threat that change provoked to some of the traditional values associated with academic work. To consider the debate and the character of academic work in the university scene that Conant fleetingly visited, we need to look back just a few years to another, but very different, visitor to the Australian system.
Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination…
Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.
At our last meeting I strongly suggested that you learn some of the other things your micro workstation could do. To undertake those tasks, you need software, and we all know the high price tag of our newest form of enhanced library productivity.
Five groups of searchers each performed two of four pre‐selected searches on the DIALOG system using ONTAP, the 1975 subset of the Educational Resources Information Center…
Five groups of searchers each performed two of four pre‐selected searches on the DIALOG system using ONTAP, the 1975 subset of the Educational Resources Information Center (ERIC) database. The groups were novices, moderately experienced searchers without ERIC experience, moderately experienced searchers with ERIC experience, very experienced searchers without ERIC experience, and very experienced searchers with ERIC experience. Data were collected on the education, online training, online experience, institutional setting, and personal characteristics of the rearchers. Variables that describe the search process (e.g. number of commands used) and variables that describe the outcome of searches (e.g. recall) were measured by examination of the search transcripts. The results showed that, compared to the experienced subjects, the novices performed surprisingly well. Although, as a group, they searched more slowly than the experienced subjects and scored lower on most (but not all) outcome measures, the differences were not as great as might be expected. Three meaningful patterns were identified among the experienced subjects' searches: (1) the group with the greatest overall experience and the greatest ERIC database experience achieved the highest recall and had the highest values of a subset of search process variables designated ‘search effort’ variables (e.g. number of commands and descriptors, connect time); (2) in general, the moderately experienced searchers with ERIC experience performed the briefest, most cost effective searches (when cost effectiveness is measured in terms of time per relevant reference retrieved). This pattern is attributed to the fact that 75 percent of this group work in academic libraries that charge individual users for online connect time. In this situation pressure to keep costs low appears to be great; (3) the subjects with ERIC experience used more thesaurus terms than the subjects without ERIC experience. The subjects without ERIC experience tended to prefer free text to thesaurus terms. In regard to outcome, only slight evidence was found to support the hypothesis that ERIC database experience leads to greater success in searching.
The following annotated bibliography of materials on orienting users to the library and on instructing them in the use of reference and other resources covers publications from 1979. A few items from 1978 were included because information about them had not been available in time for the 1978 listing. Some entries were not annotated because the compiler was unable to secure a copy of the item. The bibliography includes publications on user instruction in all types of libraries and for all types of users from children to adults. To facilitate the use of the list, it has been divided into categories by type of library. Even though the library literature includes many citations to items on user instruction in foreign countries, this bibliography includes only publications in the English language.