This paper highlights a phenomenon that causes deductively learned knowledge to be harmful when used for problem solving. The problem occurs when deductive problem solvers encounter a failure branch of the search tree. The backtracking mechanism of such problem solvers will force the program to traverse the whole subtree thus visiting many nodes twice once by using the deductively learned rule ...

Together with the rise of importance devices employing wireless networks based on principle radio frequency data transfers, also discussion harmfulness electromagnetic radiation has occurred. The authors this paper obviously cannot provide unambiguous answers to stop discussion. On other way, they can reader real obtained by measurements processed inside a semi anechoic chamber that were perfor...

abstract: performance evaluation models of information and communication technology (ict) sectors have been already considered with many perspectives of ict management. since ict has two distinct aspects of usefulness and harmfulness for the environment, therefore, this research with regard to the new dimension named environment, is going to present a new performance evaluation model with the a...

The aim of the study was to examine how social care beneficiaries rate the relative harmfulness of tobacco/nicotine-containing products compared to traditional cigarettes. This information is crucial for the development of effective tobacco control strategies targeting disadvantaged populations. The cross-sectional study covered 1817 respondents who were taking advantage of social aid services ...

Introduction. The ”healthy worker effect” (HWE) is currently understood as organized (on the part of employer) and/or unorganized (self-selection on worker, due to functional capabilities and state health workers in unfavourable working conditions, one most critical problems when conducting epidemiological studies occupational pathology. Purpose objectives. Analysis problem safety, scientific m...

Lygus bugs (Lygus Hahn, 1833) are omnivorous pests of great economic importance in field crop rotations. The L. rugulipennis (Poppius, 1911) and pratensis (Linnaeus, 1758) part the permanent complex sunflower, soybean, pea, wheat winter barley, berry crops Ukraine. article analyzes literary data devoted to features biology ecology bugs. Particular attention is paid issues species composition se...

Introduction
 Poplars and aspens (Populus sp.) are common in forest stands, shelterbelts, rural landscaping, special plantations as short-rotation woody crops; they promising tree species for biofuel bioenergy production. Wood-boring insects browse galleries a stem or branches that interrupt sap circulation promote infestation by plant pathogens. Some of these can additionally weaken trees...