Clustering as an integration pattern of business activity

The article deals with the analysis of business activity of companies and suggests the clustering as a key integration pattern of the central and peripheral region areas. Prerequisites of clustering formation and development are considered in the article. Moreover, the authors stressed that clustering increases the investment prospects of both the industry and the region.peer-reviewe

How to Tackle Integer Weighted Automata Positivity

International audienceThis paper is dedicated to candidate abstractions to capture relevant aspects of the integer weighted automata. The expected effect of applying these abstractions is studied to build the deterministic reachability graphs allowing us to semi-decide the positivity problem on these automata. Moreover, the papers reports on the implementations and experimental results, and discusses other encodings

Patterns of rapid weight loss in elite sambo athletes

Background: Rapid weight loss (RWL) is commonly practiced in combat sports. Both magnitude and methods used to induce RWL are largely similar among combat sports, but currently, there is no data on RWL methodology used by sambo athletes. Therefore, the aim of this study was to determine RWL procedures sambo athletes apply to lose weight rapidly. Methods: The sample consisted of 199 participants, of which 132 males and 67 females who participated in the World Sambo Championship 2020 held in Novi Sad, Serbia. Each participant received RWL questionnaire that was available in multiple languages, and every participant was instructed how to fill it out. Results: Almost 87% of sambo participants declared to have intentionally cut their weight prior to the competition, whereby 5.27 kg (SD: ±7.57) was lost. Gradual dieting, sauna use and skipping meals were the most dominant methods used to reduce weight prior to competition while more extreme methods of RWL such as the use of laxatives, diuretics, diet pills and vomiting were also implemented but by much smaller fragment of the participants involved. Conclusions: Findings from our study largely match with previously conducted RWL studies in terms of prevalence, magnitude and methods used by combat sport athletes, especially in judo and wrestling. Knowing the hazardous consequences of RWL, alternative methods of sustainable weight loss should be considered

Lay-up optimization of multilayered anisotropic cylinders based on a 3-D elasticity solution

Originally pulished in: Computers & Structures, Vol. 84, No. 5-6, 2009.Exact elasticity solutions are obtained using the stress function approach, where the radial, circumferential and shear stresses are determined, taking into account the closed ends of the cylindrical shell. The system of the governing algebraic equations is derived to accurately analyse a multilayered pressure vessel with an arbitrary number of layers and any thickness. The approach used is straight-forward compared to other three-dimensional solutions found in the literature. The design of multilayered composite pressure vessels is accomplished using the genetic algorithm and subject to the Tsai–Wu failure criterion. The genetic algorithm is optimized to serve this particular proble

The Paradigm of Sustainable Development in the Context of the Transition to a Circular Economy

The article presents the relationship of sustainable development based on a combination of social and environmental aspects of society with the solution of economic problems that objectively arise due to the growing negative impact on the biosphere. The state of solving the tasks necessary to achieve the Sustainable Development Goals formulated by the UN for the period up to 2020 in the Russian Federation is analyzed. The directions of transition to sustainable human development are shown based on the use of the concept of circular economy and the introduction of a model of its implementation, taking into account the peculiarities of the organization of the socio-ecological and economic system in each country. The most relevant areas of research on the problems of sustainable development and the transition to a circular economy are formulated.</jats:p

Simultaneous Laparoscopic Treatment of Multiple Synchronous Hernia Defects in Different Anatomical Regions of the Anterior Abdominal Wall

The development of laparoscopic surgery influences greatly the contemporary surgical treatment. This influence is even more obvious in the treatment of abdominal wall hernias. While this pathology is widely spread, the different types of hernias could present as a single medical condition or as a combination of defects in different regions of the anterior abdominal wall.The laparoscopic approach in the treatment of abdominal wall hernia enables the inspection of the whole abdominal wall, which sometimes leads to detection of defects, which were not found during the clinical examination before the surgery. On the other hand, this diagnostic sensitivity provides an opportunity for simultaneous definitive treatment of several abdominal wall defects. Hence the need for repeated surgical interventions and multiple incisions is avoided. At the same time, the patient benefits from the well-known advantages of the minimally invasive surgery like - shorter hospital stay, less pain, faster return to everyday activity, better cosmetic results, less surgical site infections, etc. For example, the three-trocar technique of TAPP provides an access for the simultaneous reparation of bilateral inguinal hernias. Placing two additional ports makes the reconstruction of the existing primary or incisional ventral hernia feasible. Laparoscopic surgery makes the one-stage reconstruction of various combinations of anterior abdominal wall hernias possible - from a concomitant small unilateral inguinal hernia and an umbilical hernia to large bilateral inguinal hernias and multiple defects of the rest of the abdominal wall (Swiss cheese)

A Novel Classification Method Using the Takagi–Sugeno Model and a Type-2 Fuzzy Rule Induction Approach

The main purpose of this research was to introduce a classification method, which combines a rule induction procedure with the Takagi–Sugeno inference model. This proposal is a continuation of our previous research, in which a classification process based on interval type-2 fuzzy rule induction was introduced. The research goal was to verify if the Mamdani fuzzy inference used in our previous research could be replaced with the first-order Takagi–Sugeno inference system. In the both cases to induce fuzzy rules, a new concept of a fuzzy information system was defined in order to deal with interval type-2 fuzzy sets. Additionally, the introduced rule induction assumes an optimization procedure concerning the footprint of uncertainty of the considered type-2 fuzzy sets. A key point in the concept proposed is the generalization of the fuzzy information systems’ attribute information to handle uncertainty, which occurs in real data. For experimental purposes, the classification method was tested on different classification benchmark data and very promising results were achieved. For the data sets: Breast Cancer Data, Breast Cancer Wisconsin, Data Banknote Authentication, HTRU 2 and Ionosphere, the following F-scores were achieved, respectively: 97.6%, 96%, 100%, 87.8%, and 89.4%. The results proved the possibility of applying the Takagi–Sugeno model in the classification concept. The model parameters were optimized using an evolutionary strategy