scholarly journals Geodiversity and Biodiversity of the Postglacial Landscape (Dębnica River Catchment, Poland)

2016 ◽  
Vol 35 (1) ◽  
pp. 5-28 ◽  
Author(s):  
Alicja Najwer ◽  
Janina Borysiak ◽  
Joanna Gudowicz ◽  
Małgorzata Mazurek ◽  
Zbigniew Zwoliński
Keyword(s):  
Evaluation Criteria ◽  
Natural Vegetation ◽  
New Approach ◽  
River Catchment ◽  
Plant Associations ◽  
Wide Range ◽  
Analytical Algorithm ◽  
Landscape Ecological ◽  
Factor Maps ◽  
Selection Of

Abstract The preparation of a proper zoning plan or landscape-ecological plan requires taking into account recognition of the natural values of an area covered by the plan and evaluating its abiotic and biotic diversities. The aim of the paper is to present the new approach to the procedure of geodiversity and biodiversity assessment. This procedure is used to characterise abiotic and biotic heterogeneity of the postglacial landscape modified by a man, tested on Dębnica River catchment (Western Pomerania, Poland). This catchment is a representative example illustrating the landscape of Central European Plain. The analytical algorithm of the geodiversity assessment is based on appropriate selection of the evaluation criteria: lithological, relative heights, landform fragmentation, hydrographical elements and mesoclimatic conditions. Biodiversity was assessed on the basis of real vegetation, potential natural vegetation and the degree of anthropisation of the natural vegetation with respect to syngenesis of plant associations. Seven factor maps were obtained: five for the diversity of abiotic elements, and two for the diversity of biotic elements, which became the basis for the creation of total geodiversity and biodiversity maps. Maps produced in accordance with given methodology may find a wide range of applications.

APEKS - a method of making decisions

2021 ◽  
Vol 12 (1) ◽  
pp. 45-50
Author(s):  
Jan Szybka ◽  
Sylwester Pabian
Keyword(s):  
Fuel Consumption ◽  
Evaluation Criteria ◽  
Operating Costs ◽  
Passenger Car ◽  
Utility Values ◽  
Decision Method ◽  
Individual Comparison ◽  
Wide Range ◽  
Aesthetic Values ◽  
Selection Of

The APEKS method was developed in the 1970s. It has a wide range of applications for making a decision. The article describes the APEKS method, which is a multi-criteria method and consists of 10 steps. The application of this method was presented in the example of car selection. The problem of choosing a passenger car was analyzed taking into account 6 evaluation criteria: fuel consumption, power, price, annual operating costs, aesthetic values, and utility values. Following the APEKS method, the analysis was completed with the selection of the best variant, using the forced decision method, consisting of an individual comparison of all criteria with one another. The APEKS variant is used for this, which has all the best features of the variants to choose from. This indicates that APEKS is an idealized and fictional variant.

scholarly journals Multicriteria comparative analysis of pillars strengthening of the historic building

2019 ◽  
Vol 9 (1) ◽  
pp. 18-25 ◽  
Author(s):  
Katarzyna Kafel ◽  
Agnieszka Leśniak ◽  
Krzysztof Zima
Keyword(s):  
Comparative Analysis ◽  
Carrying Capacity ◽  
Evaluation Criteria ◽  
Historic Buildings ◽  
Historic Building ◽  
Wide Range ◽  
Over Time ◽  
Selection Of

AbstractOver time, historic buildings are exposed to various destructive mechanisms brought about by a wide range of damaging factors. Costs and methods of reinforcing their individual components are, among others, an important issue. The term "reinforcement" is linked with the concept of conservation, which stands for the actions taken with the aim of preserving a building. It provides a well-articulated system consisting of activities that lead to the reinforcement of the structure, usability enhancement or to the improvement of its carrying capacity. This article analyses the selection of an appropriate brick pillar reinforcement method, taking into account accepted evaluation criteria.

Modeling Biomass Gasification: A New Approach to Utilize Renewable Sources of Energy

2008 ◽  
Author(s):  
M. Vaezi ◽  
M. Passandideh-Fard ◽  
M. Moghiman ◽  
M. Charmchi
Keyword(s):  
Selection Procedure ◽  
Calorific Value ◽  
Gas Temperature ◽  
New Approach ◽  
Wide Range ◽  
Specific Biomass ◽  
Thermochemical Equilibrium ◽  
Biomass Materials ◽  
Gasification Efficiency ◽  
Selection Of

Thermochemical equilibrium modeling is the basis of the numerical method implemented in this study to predict the performance of a biomass gasifier. To validate the model, a close agreement is shown between numerical and experimental results. The model is then used in order to optimize the selection procedure of a specific biomass for a certain application. For this purpose, the minimum and maximum amount of carbon, hydrogen, and oxygen for 55 different biomass materials are extracted to calculate the range of variation of oxygen content and carbon/hydrogen ratio. The influences of such variations on syngas characteristics are then studied. Syngas characteristics are comprised of syngas calorific value, outlet gas temperature, gasification efficiency, and the volume of syngas obtained. The results are plotted in a generalized format that may be used for a wide range of biomass materials. These plots can be used for the selection of a biomass material based on desired conditions. Therefore, the developed model in this study provides a tool for design optimization of a biomass downdraft gasifier.

Publishing patterns in Pharmacy

2021 ◽  
Vol 2 (2) ◽  
pp. 65-91
Author(s):  
Terhi Sandgren
Keyword(s):  
Pharmaceutical Preparations ◽  
Research Field ◽  
Multiple Perspectives ◽  
Research Information ◽  
New Approach ◽  
Wide Range ◽  
Comprehensive Picture ◽  
Using Data ◽  
National Languages ◽  
Selection Of

Pharmacy is a multidisciplinary research field that combines natural sciences, health sciences and social sciences to study drugs and pharmaceutical preparations from multiple perspectives. The study explores publishing patterns in pharmacy via bibliometric methods, that is statistical methods applied to study scientific literature. Earlier bibliometric studies focusing on pharmacy have used data from the international citation databases Web of Science and Scopus. In most of these studies, pharmacy has been operationalized by focusing on journals categorized as pharmacy journals. This study provides a new approach to the study of publishing patterns, by using data from institutional Current Research Information Systems (CRIS), and by using pharmacy organizations as the basis of operationalization of pharmacy. It seeks to provide a more comprehensive picture of publishing patterns, since the data covers all publication types used in pharmacy and is not limited to pharmacy journals. The objective of this study is thus to explore whether the selection of databases and operationalization of the discipline affects the results concerning publishing patterns in pharmacy.  The results obtained in this study are very similar to earlier studies utilizing international databases. However, the results show that pharmacy researchers also publish in national languages, and that there are several national journals amongst the core journals that are not covered by the international databases. The multidisciplinary nature of pharmacy can be seen in the wide range of journals in which pharmacy researchers publish their articles.

scholarly journals Formative assessment of achievements in mathematics and selection of tasks

2021 ◽  
pp. 127-150
Author(s):  
Rada Šćepanović ◽  
Jasmina Milinković
Keyword(s):  
Mathematical Knowledge ◽  
Formative Evaluation ◽  
Teaching Practice ◽  
Evaluation Criteria ◽  
Mathematical Tasks ◽  
Sources Of Information ◽  
Multiple Sources ◽  
Wide Range ◽  
Evaluation Techniques ◽  
Selection Of

The evaluation of mathematical knowledge is based on multiple sources of information. In modern teaching practice, a special place has a formative evaluation of mathematical achievements of students as an integral part of teaching that supports learning and provides useful information to teachers and students. The paper is dedicated to the analysis of innovative evaluation techniques in mathematics teaching that reflect the changed paradigm of mathematics education. The aim of this paper is to explore the features and implications of authentic evaluation techniques and, accordingly, to make the choice of tasks as evaluation instruments. Using the method of theoretical analysis of research results of authentic methods for assessing mathematical knowledge, skills and attitudes, we determine the criteria for selecting tasks for evaluating students' mathematical achievements (focus on in-depth and extended application of existing knowledge in different contexts, multiple solutions, research possibilities). The discourse is then directed towards considering the originality of the task evaluation criteria. In the final considerations, we point out that the selection of mathematical tasks creates an opportunity to apply a wide range of authentic techniques in evaluating students 'mathematical achievements, and broader and deeper plans the further course of teaching in students' cognitive and motivational development. We point out that by choosing mathematical tasks, it creates an opportunity to apply a wide range of authentic techniques in evaluating students' mathematical achievements, and broader and deeper plans the further course of teaching in the cognitive and motivational development of students.

scholarly journals A New Approach for Centrifugal Impeller Preliminary Design and Aerothermal Analysis

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Fangyuan Lou ◽  
John C. Fabian ◽  
Nicole L. Key
Keyword(s):  
Sensitivity Study ◽  
Operating Conditions ◽  
New Method ◽  
Centrifugal Impeller ◽  
Preliminary Design ◽  
New Approach ◽  
Relative Diffusion ◽  
Wide Range ◽  
Effectiveness Parameter ◽  
Selection Of

This paper introduces a new approach for the preliminary design and aerothermal analysis of centrifugal impellers using a relative diffusion effectiveness parameter. The relative diffusion effectiveness is defined as the ratio of the achieved diffusion to the maximum available diffusion in an impeller. It represents the quality of the relative diffusion process in an impeller. This parameter is used to evaluate impeller performance by correlating the relative diffusion effectiveness with the impeller isentropic efficiency using the experimental data acquired on a single-stage centrifugal compressor (SSCC). By including slip, which is appropriate considering it is an inviscid effect that should be included in the determination of maximum available diffusion in the impeller, a linear correlation between impeller efficiency and relative diffusion effectiveness resulted for all operating conditions. Additionally, a new method for impeller preliminary design was introduced using the relative diffusion effectiveness parameter, in which the optimal design is selected to maximize relative diffusion effectiveness. While traditional preliminary design methods are based on empirical loss models or empirical knowledge for selection of diffusion factor (DF) in the impeller, the new method does not require any such models, and it also provides an analytical approach for the selection of DF that gives optimal impeller performance. Validation of the method was performed using three classic impeller designs available in the open literature, and very good agreement was achieved. Furthermore, a sensitivity study shows that the method is robust in that the resulting flow angles at the impeller inlet and exit are insensitive to a wide range of blockage factors and various slip models.

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

Factors Affecting Molecular Self-Assembly and Its Mechanism

2012 ◽  
Vol 9 (1) ◽  
pp. 43 ◽  
Author(s):  
Hueyling Tan
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Molecular Engineering ◽  
Molecular Structures ◽  
Polymer Science ◽  
New Approach ◽  
Factors Affecting ◽  
Dna Structures ◽  
Self Assembling ◽  
Wide Range

Molecular self-assembly is ubiquitous in nature and has emerged as a new approach to produce new materials in chemistry, engineering, nanotechnology, polymer science and materials. Molecular self-assembly has been attracting increasing interest from the scientific community in recent years due to its importance in understanding biology and a variety of diseases at the molecular level. In the last few years, considerable advances have been made in the use ofpeptides as building blocks to produce biological materials for wide range of applications, including fabricating novel supra-molecular structures and scaffolding for tissue repair. The study ofbiological self-assembly systems represents a significant advancement in molecular engineering and is a rapidly growing scientific and engineering field that crosses the boundaries ofexisting disciplines. Many self-assembling systems are rangefrom bi- andtri-block copolymers to DNA structures as well as simple and complex proteins andpeptides. The ultimate goal is to harness molecular self-assembly such that design andcontrol ofbottom-up processes is achieved thereby enabling exploitation of structures developed at the meso- and macro-scopic scale for the purposes oflife and non-life science applications. Such aspirations can be achievedthrough understanding thefundamental principles behind the selforganisation and self-synthesis processes exhibited by biological systems.

Synthesis, Characterization and Antiproliferative Activity Assessment of a Novel 1H-5-mercapto-1,2,4 Triazole Derivative

2017 ◽  
Vol 68 (4) ◽  
pp. 745-747 ◽  
Author(s):  
Marius Mioc ◽  
Sorin Avram ◽  
Vasile Bercean ◽  
Mihaela Balan Porcarasu ◽  
Codruta Soica ◽  
...  
Keyword(s):  
Antiproliferative Activity ◽  
Biological Activities ◽  
Cancer Cell Line ◽  
Vascular Endothelial ◽  
Triazole Derivative ◽  
Activity Assessment ◽  
Wide Range ◽  
Specific Receptors ◽  
Endothelial Growth Factor ◽  
Selection Of

Angiogenesis plays an important function in tumor proliferation, one of the main angiogenic promoters being the vascular endothelial growth factor (VEGF) which activates specific receptors, particularly VEGFR-2. Thus, VEGFR-2 has become an essential therapeutic target in the development of new antitumor drugs. 1,2,4-triazoles show a wide range of biological activities, including antitumor effect, which was documented by numerous reports. In the current study the selection of 5-mercapto-1,2,4-triazole structure (1H-3-styryl-5-benzylidenehydrazino-carbonyl-methylsulfanil-1,2,4-triazole, Tz3a.7) was conducted based on molecular docking that emphasized it as suitable ligand for VEGFR-2 and EGFR1 receptors. Compound Tz3a.7 was synthesized and physicochemically and biologically evaluated thus revealing a moderate antiproliferative activity against breast cancer cell line MDA-MB-231.

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