Concept image and concept definition in mathematics with particular reference to limits and continuity

The concept image consists of all the cognitive structure in the individual's mind that is associated with a given concept. This may not be globally coherent and may have aspects which are quite different from the formal concept definition. The development of limits and continuity, as taught in secondary school and university, are considered. Various investigations are reported which demonstrate individual concept images differing from the formal theory and containing factors which cause cognitive conflict

Embedding Diversity: Communication and Label Concept for Underutilized Crops – Checklist for your First Evaluation

There are some very successful cases of marketing of underutilized crops in European countries. Examples are the marketing of rare varieties in Austrian and Swiss supermarkets. Other examples are market initiatives in Spain, France, or Italy, selling local produces and processed foods in specialised shops, at farmers markets, or directly at the farm. A consumer survey was conducted in 2017 in France, Italy, Spain, and Switzerland during DIVERSIFOOD project in order to gain additional data on such examples; and Rossi et al. (2016)1 developed the DIVERSIFOOD Case Study Framework. Among others an objective of these studies was to identify some best-case examples for the use of a trademark, label or logo and the related communication strategies. Then a flagship approach to communicate the benefits of underutilized crops by means of a label should be developed. The studies identified many individual approaches of the various marketing initiatives, each based on slightly different secrets of success. Within the DIVERSIFOOD consortium it was concluded that there’s no sense in defining a single best-label flagship approach; instead, a concept should give an idea of the possibilities to communicate the value of agrobiodiversity to consumers. This concept is the resulting outcome. It provides a structured approach for networks an market initiatives to evaluate whether a label for underutilized crops is feasible, and wheter it is in line with theire values and aims or not, and what the premises for the communication strategy are for those underutilized crops. This concept provides a general idea about topics that should be considered. The result could be the introduction of a label or the abandonment of introducing a label. In the beginning of such an evaluation there are most likely existing underutilized crops, that is, genetic resources, such as old, locally, and newly bred underutilized varieties, as well as some products or product ideas derived from these crops. The main target groups of this concept are farmers involved in participatory breeding, seed savers, seed networks and communities, foundations, and breeders of underutilized crops, as well as partners of such genetic resources. Moreover, the concept could be interesting for initiatives and organizations that consider the integration of underutilized crops in their existing label; however there is no specific treatment of this topic in the concept. The concept should be considered as the first step in the evaluation of a new label. The treated topics might also hint on further considerations when developing a successful marketing initiative. However, the concept focuses mainly on two points: 1. Introduction of a label2, a logo, a trademark or similar and some implications 2. Communication tools and communication contents for products of underutilized crop

Universal router concept

Portable universal router can cut holes of large diameter and irregular shapes, machine recesses, and drill holes with certain edge-distance limitations. Rectangular and round holes may be cut without a template

Tire/wheel concept

A tire and wheel assembly is disclosed in which a low profile pneumatic tire (having sidewalls which deflect inwardly under load) and a wheel (having a rim featuring a narrow central channel and extended rim flanges) form the combination. The extended rim flanges support the tire sidewalls under static and dynamic loading conditions to produce a combination particularly suited to aircraft applications

Boltzmann's Concept of Reality

In this article we describe and analyze the concept of reality developed by the Austrian theoretical physicist Ludwig Boltzmann. It is our thesis that Boltzmann was fully aware that reality could, and actually was, described by different points of view. In spite of this, Boltzmann did not renounce the idea that reality is real. We also discuss his main motivations to be strongly involved with philosophy of science, as well as further developments made by Boltzmann himself of his main philosophical ideas, namely scientific theories as images of Nature and its consequences. We end the paper with a discussion about the modernity of Boltzmann's philosophy of science.Comment: 13 pages, pdf only. To appear in the book on Ludwig Boltzmann scientific philosophy, published by Nova Science. Edited by A. Eftekhar

The aerospace developments concept

The viability of using airships for the transport of natural gas, and the initial design of such a system, the airship and its associated subsystems together with a continuing economic analysis of the project were investigated. Investigations, on a funded basis, were also carried out into the application of the airship for A.S.W. and A.E.W. uses, and a further investigation into the transport of mineral concentrates for an Australasian mining concern was completed

Loneliness: A Concept Analysis

TOPIC. Loneliness is a universal human experience recognized since the dawn of time, yet it is unique for every individual. Loneliness can lead to both depression and low self‐esteem. PURPOSE. This article explicates the concept of loneliness through the examination of its conceptual definition and uses, defining attributes, related concepts, and empirical referents. SOURCES OF INFORMATION. Literature review using hand search and database were used as sources of information. CONCLUSION. Because loneliness is commonly encountered in nursing situations, the information provided will serve as a framework for assessment, planning, intervention, and evaluation of clients