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Comparative analysis of experimental testing procedures for the elicitation of rescue actions in ants

Current Zoology 2022年第2期68卷 159-168页

作者： Filip TURZA krzysztof MILER Institute of Environmental Sciences Faculty of BiologyJagiellonian UniversityGronostajowa 7Krakow 30-387Poland Institute of Systematics and Evolution of Animals Polish Academy of SciencesStawkowska 17Krakow 31-016Poland

Rescue behavior is observed when 1 individual provides help to another individual in *** reports of rescue behavior concern ants(Formicidae),in which workers rescue each other from various types of *** of these entrapment situations can be simulated in the laboratory using an entrapment bioassay,in which ants confront a single endangered nest mate entrapped on a sandy arena by means of an artificial ***,we compared numerous characteristics of rescue actions(contact between individuals,digging around the entrapped individual,pulling at its body parts,transport of the sand covering it,and biting the snare entrapping it)in Formica cinerea *** performed entrapment tests in the field and in the laboratory,with the latter under varying conditions in terms of the number of ants potentially engaged in rescue actions and the arena substrate(marked or unmarked by ants'pheromones).Rescue actions were more probable and pronounced in the field than in the laboratory,regardless of the type of ***,different test types in the laboratory yielded inconsistent results and showed noteworthy variability depending on the tested characteristic of *** results illustrate the specifics of ant rescue actions elicited in the natural setting,which is especially important considering the scarcity of field ***,our results underline the challenges related to the comparison of results from different types of entrapment tests reported in the available ***,our study shows how animal behavior differs in differing experimental setups used to answer the same questions.

关键词： ants animal behavior entrapment bioassay Formica cinerea rescue behavior

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Analytical and numerical method assessing the risk of sinkholes formation in mining areas

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International Journal of Mining Science and Technology 2015年第1期25卷 85-89页

作者： Piotr Strzalkowski krzysztof Tomiczek Faculty of Mining and Geology Silesian University of Technology

Voids, which have not been liquidated and associated with shallow mining excavations, pose a serious threat of potential formation of sinkholes. This threat is connected with the loss of stability of voids that had been formed as a result of mining operations in the deeper strata. Taking into account the impact of lower coal seams mining on shallow excavations and based on the example of a region that had been intensely exploited, this paper proposes a methodology for analysing the stability of shallow mine voids in the rock mass. Deformations in the excavation region were calculated by using FLAC2D computer pro- gram and assigning the Coulomb-Mohr model to the rock mass. Based on the numerical analysis, this paper evaluated the stability of the void in the event of a roof support fall. The results indicate the like- lihood of void formation. Based on the Budryk-Knotbe theory, the deformations of rock mass and sand- stone strata in the roof of the void, which had been caused by mining exploitation in consecutive years, were calculated. The results of numerical calculations and analyses were compared with the limit defor- mations values of sandstone in tension. It is concluded that the exploitations cause the void to break down. The proposed method can forecast the discontinuous deformations threats in the areas that have undergone shallow undermining exploitation and the areas of underground urban.

关键词： Mining exploitationDiscontinued deformationsSinkholesStabilityRisk of sinkhole formationTensile deformations of rocks

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The untapped potential of scenic routes for geotourism:case studies of Lasocki Grzbiet and Pasmo Lesistej(Western and Central Sudeten Mountains,SW Poland)

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Journal of Mountain Science 2021年第4期18卷 1062-1092页

作者： Dagmara CHYLINSKA krzysztof KOLODZIEJCZYK Department of Regional Geography and Tourism Institute of Geography and Regional DevelopmentFaculty of Earth Sciences and Environmental ManagementUniversity of WroclawN0.1Uniwersytecki Square50-137 WroclawPoland

A view is often more than just a piece of landscape,framed by the gaze and evoking *** diminishing these obvious‘tourismimportant’advantages of a view,it is noteworthy that in itself it might play the role of an interpretative tool,especially for large-scale phenomena,the knowledge and understanding of which is the goal of *** this paper,we analyze the importance of scenic drives and trails for tourism,particularly geotourism,focusing on their ability to create conditions for experiencing the dynamically changing landscapes in which lies knowledge of the natural processes shaping the Earth’s surface and the methods and degree of its resource *** issues are found in both wider and local contexts.A more detailed insight has been conducted on the basis of two,although in some sense peripheral,tourism regions from the Sudeten Mountains(southwestern Poland):Lasocki Grzbiet(a ridge)and Pasmo Lesistej(a small range).The subjects of the investigation were complex:the geotourism potential of selected viewpoints located on the most scenic routes(mostly paths and forest tracks)as well as the problems of maintenance,conservation,and protection of their educational *** work is based on desk and field research supported by results of GIS visibility analyses(conducted in the QGIS program).

关键词： Scenic tourist trails Scenic drives Viewtowers Viewpoints Geotourism Sudeten Mountains

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Simplifying ADRC design with error-based framework: case study of a DC-DC buck power converter

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Control Theory and Technology 2021年第1期19卷 94-112页

作者： Rafal Madonski krzysztof Lakomy Jun Yang Energy Electricity Research Center International Energy CollegeJinan UniversityGuangzhouZhuhai CampusChina PoznańUniversity of Technology PoznanPoland Key Laboratory of Measurement and Control of CSE Ministry of EducationSchool of AutomationSoutheast UniversityNanjingChina

In this work,the problem of designing a robust control algor ithm for a DC-DC buck power converter is *** applied solution is based on a recenly proposed eror-based version of the active disturbance rejection control(ADRC)scheme,in which the unknown higher-order lerms of the reference signal are treated as additional components of the system"total disturbance".The motivation here is to provide a prac tical following of a reference voltage trajectory for the buck converler in specific cases where neither the analytical form of the desired signal nor its future values are known a priori,hence cannot be directly used for control *** this *** application of the error-based ADRC results in a prac-tically appealing control technique,with compact struc *** control rule,and intwitive tuning(inherited from the conventional output-based ADRC scheme).***,and experimental results are shown to validate the efficacy of the error-based ADRC in buck converter control,followed by a discussion about the revealed theoretical and practical limitations of this approach.

关键词： DC-DC converter Power electronics Active disturbance rejection control ADRC Extended stale observer ESO Error-based form

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The Generalized Stackelberg Equilibrium of the Two-Person Stopping Game

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Journal of the Operations Research Society of China 2024年第1期12卷 155-168页

作者： Marek Skarupski krzysztof J.Szajowski Faculty of Pure and Applied Mathematics Wroclaw University of Science and Technology50-370WrocƚawDolonoslaskiePoland

In modeling the bilateral selection of states of the process,Dynkin(Dokl Akad Nauk USSR 185:241–288,1969)proposed a two-person game in which players use stopping moments as *** purpose of this work is to present a model of the game in which the players have different information about the process itself,as well as various laws to stop the process and accept its *** game model uses the stochastic process apparatus,in particular,the ability to create different filters for the same *** sets of stopping moments based on different filters are not identical,which allows us to model different sets of strategies for *** show that the follower,by observing the behavior of a rational leader,can recover information that is lost due to the lack of complete observation of the state of the *** the competition of two opponents for the maximum of the ***,one of whom has access to full information and the other only knows their relative ranks,we found the generalized Stackelberg *** the priority of a player observing the relative ranks is less than 50%,then that player modifies his strategy based on the behavior of the second *** a player with full information,information about the behavior of the player observing the relative ranks is useless.

关键词： No-zero-sum game Optional stopping Equilibrium Filtration

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Tectonic control on slow-moving Andean landslides in the Colca Valley,Peru

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Journal of Mountain Science 2020年第8期17卷 1807-1825页

作者： krzysztof GAIDZIK Jerzy zABA Justyna CIESIELCZUK Institute of Earth Sciences University of SilesiaBedziniska 6041-200 SosnowiecPoland

The Colca Valley in the Central Andes is a region characterized by the occurrence of large slow-moving landslides and a high level of seismic *** this study,we aimed to determine passive and active tectonic control on the formation of selected five large landslides in the Colca Valley and to assess geohazard associated with these *** that purpose,we performed a post-landslide field survey,applied remote sensing techniques,and obtained eyewitness ***,the need to understand mass movement processes in this region is even higher due to the establishment of the Colca y Volcanes de Andagua Geopark(Colca and Andagua Volcanoes Geopark).Our results suggest that the studied landslides usually represent a complex failure mechanism,dominated by translational sliding or rotational displacements,commonly associated with the formation of horst-and-graben like *** found a spatial correlation between the distribution of landslides and inherited fault *** head scarps appear to be limited by the WNW-to NW-striking faults,whereas the lateral extent of some of the reported features seems to be connected with the NNE-striking normal faults,common in both,the Mesozoic strata and the Pleistocene-Holocene deposits.

关键词： Landslide Geohazard Tectonic activity Earthquake Central Andes Peru

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Photoluminescence and electrochemiluminescence studies of chosen rare earths systems

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Journal of Rare Earths 2008年第2期26卷 192-197页

作者： Stefan Lis Slawomir But krzysztof Staninski Monika Jesiolowska Department of Rare Earths Faculty of Chemistry Adam Mickiewicz University Grunwaldzka 6

Eu（Ⅲ） complexes with chosen Keggin polyoxomatalates, POM, containing organic counter cations （tetrabutylarnmonium, tetrabutylphosphonium, triphenylethylphosphonium）, were synthesized, and their photophysical properties were studied. The synthesized complexes had the general formula of XnH5-n[EuSiW11O39], formulated based on the results of elemental and thermogravimetric analysis and FTIR spectroscopy. The photophysical properties of the obtained compounds were investigated using photoluminescence and electrochemiluminescence, ECL, methods in solutions and solids. The most intense luminescence of Eu（Ⅲ） was observed for the complexes with tetrabutylarnmonium cations. After the addition of phenanthroline to the XnH5-n[EuSiW11O39] solutions, a large increase in the Eu（Ⅲ） luminescence intensity and a lengthening of its luminescence lifetime were observed as a result of the formation of ternary complexes. Attempts to apply ECL as a method of light emission by generating species capable of forming excited states in Ln/POMs, i.e., Tb（Ⅲ） and Eu（Ⅲ） in the Na9EuW10O36 and Na9TbW10O36 complexes, were made. The influence of the POM complexes on the ECL was also tested using the Tb/EDDHA （EDDA=ethylenediamine di（o-hydroxyphenylacetic acid）） complex, which is effective in generating ECL.

关键词： Ln(Ⅲ) luminescence electrochemiluminescence polyoxometalates complexes rare earths

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Analysis of the State of the Fine-Dispersive Precipitations in the Structure of High Strength Steel Weldox 1300 by Means of Electron Diffraction

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Journal of Iron and Steel Research International 2011年第S1期18卷 135-142页

作者： Ozgowicz Wojciech Labisz krzysztof Division of Constructional and special Materials Division of Materials Processing Technology Management and Computer Techniques in Materials ScienceInstitute of Engineering Materials and BiomaterialsSilesian University of TechnologyKonarskiego St.18A44-100 GliwicePoland

The paper deals with investigations concerning the structure and state of dispersive precipitations of the phases consolidating in the high-strength steel Weldox 1300 after its high temperature thermomechanical *** use of transmission technique of electron microscopy (TEM) mainly the microstructure and morphology of martensite was analysed,as well as the state of dispersive precipitations of carbides and nitrides resulting from microadditives of such alloys as Nb,V,Ti or B,introduced into the *** revealed both a fine lathed and twin structure of the matrix of martensite in the investigated *** means of the method of electron diffraction particles of secondary strengthening phases of the M(C,N) type of a nanocrystalline size could be identified,and also non-metallic oxide inclusions,affecting the mechanism of strengthening of the investigated steel.

关键词： weldox 1300 HSLA steel thermomechanical treatment martensitic steel structural steel

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ON AN EQUATION CHARACTERIZING MULTI-CAUCHY-JENSEN MAPPINGS AND ITS HYERS-ULAM STABILITY

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Acta Mathematica Scientia 2015年第6期35卷 1349-1358页

作者： Anna BAHYRYCZ krzysztof CIEPLINSKI Jolanta OLKO Institute of Mathematics Pedagogical University AGH University of Science and Technology Faculty of Applied Mathematics

In this paper, we give two characterizations of multi-Cauchy-Jensen mappings. One of them reduces the system of n equations defining these mappings to a single functional equation. We also prove, using the fixed point... 详细信息

关键词： multi-Cauchy-Jensen mapping (generalized) Hyers-Ulam stability Cauchy'sfunctional equation Jensen's functional equation fixed point method

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Regeneration of grinding wheel active surface using high-pressure hydro-jet

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Journal of Central South University 2014年第8期21卷 3107-3118页

作者： krzysztof NADOLNY Jaroslaw PLICHTA Pawel SUTOWSKI Department of Production Engineering Faculty of Mechanical EngineeringKoszalin University of Technology

The possibility of applying a high-pressure hydro-jet for renewal of the grinding wheel cutting ability was *** work was conducted in the internal cylindrical grinding process of the Titanium Grade 2 alloy,which belongs to the group of hard-to-cut *** analysis shows that the impact on the erosion effectiveness of the grinding wheel active surface(GWAS)depends upon the hydro-jet inclination angle and working *** results reveal that application of hydro-jet working pressure of 25 MPa allows for effective cleansing of the grinding wheel *** on the initial GWAS condition and the level of its smearing with chips of machined material,it is possible to increase the number of grinding wheel unevenness apexes by as much as 4.5 times.

关键词： grinding grinding wheels hydro-jet hard-to-cut materials

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