bluuebunny/crossref_metadata_2025_split huggingface dataset:
Using an Adaptive Filtration to Improve Adaptive Optical Systems Performance. Analytical Review
Authors: Shanin Yu. I. 
Published: March 2019

For adaptive optical systems (AOS) installed in the optical path of aircraft-based laser systems, the presence of changing input light signals is typical. A wave-front sensor processes these signals. The quality of the radiation wave-front correction depends on how well the rapidly changing input signal is received and processed. When dealing with such signals, an adaptive filtration (AF) is used, which allows automatic adaptation to the changing input signal. The adaptive filtration is used in control algorithms for adaptive optical systems.The paper gives a brief theoretical AF background as applied to the AOS. The AF with feedback can be used for the following: a) predictions, b) identification of an unknown system, c) balancing of characteristics, d) disturbance rejection. The AF main point is to control the weighting factors of the input signal, which form the output signal. Under control, the difference between the reference and output signals is minimized. Mathematically, this comes down to defining the global minimum of the objective function. Among the search methods for this minimum, the paper considers the following ones: the Newton's method, the steepest-descent method and its modified version - the least square error method, and the recursive AF algorithm using the least squares criterion. The choice requirements for an adaptive algorithm are formulated.The paper considers direct application of the AF methods in the control algorithms of the AOS used in the airborne laser systems. Analyzes both the works on improving operation of classical AOS control loops (based on the PID-controllers with time-fixed gains) by adding various adaptive devices to the circuit, and the works on direct use of the adaptive filters and their relevant control algorithms. Adaptive filtering has shown the positive results both in suppressing the multiple narrow-band vibrations inherent in the aircraft and in broadband jitter due to the turbulent atmosphere, including the aero-optical wave-front aberrations of laser radiation.For more successful application of the adaptive filtering methods for AOS control, further interpretation and research into capabilities of their practical implementation for specific applications of adaptive optics is required.
Analysing Computer-Aided Manufacturing Systems and Optimising Work Sequence of Complex Shell Parts
Authors: Kravchenko I. I. , Bukharov S. V. 
Published: March 2019

A track record in application of multi-operational CNC machines shows that their using is efficient only in the case of a significant increase in productivity rate and a dramatically reduced time-to-market of new products. Manufacturing capabilities of multi-operational machines (MOM) have been most completely revealed when machining the complex shell parts. The more complicated is a design of the part and the more is the number of its surfaces to be machined and the number of tools desirable for its machining and positioning, the more efficient is the use. One way to improve the MOM machining rate is to reduce nonproductive machine time by decreasing the mutual overlap processing of the movable operating elements of the machine.To solve this problem, the computer-aided manufacturing (CAM) systems have been analysed. The analysis has shown that their capabilities are wide enough, however, these systems can calculate only the total execution time of the main manufacturing steps, but cannot calculate the nonproductive machine time and minimise it. This conclusion suggests that the task of optimizing the processing sequence is relevant. The research has shown that the problem can be solved by dynamic programming methods, one of which is the solution of the traveling salesman problem (the Bellman’s method). With a known processing schedule of all the elementary surfaces of the shell part, i.e. the known number of the manufacturing steps to be performed, each step is represented as a vertex of some graph, and technological links between the vertices of its edges. A mathematical model developed on the Bellman principle, which is adapted to the manufacturing tasks allows us to minimise mutual overlap processing time of the operating elements of the machine to perform all the steps in the optimal sequence. Based on the MOM model (1000VBF), the mathematical model has passed tests when machining the shell part with 26 manufacturing steps to reach up to 12% reduction of the nonproductive machine time, as a result of optimization.
Structural Analysis of Product and Computer-Aided Assembly Planning in AssemBL Software Package
Authors: Bozhko A. N. 
Published: March 2019

Computer-aided design of assembly processes (Computer aided assembly planning, CAAP) of complex products is an important and urgent problem of state-of-the-art information technologies. Intensive research on CAAP has been underway since the 1980s. Meanwhile, specialized design systems were created to provide synthesis of assembly plans and product decompositions into assembly units. Such systems as ASPE, RAPID, XAP / 1, FLAPS, Archimedes, PRELEIDES, HAP, etc. can be given, as an example. These experimental developments did not get widespread use in industry, since they are based on the models of products with limited adequacy and require an expert’s active involvement in preparing initial information. The design tools for the state-of-the-art full-featured CAD/CAM systems (Siemens NX, Dassault CATIA and PTC Creo Elements / Pro), which are designed to provide CAAP, mainly take into account the geometric constraints that the design imposes on design solutions. These systems often synthesize technologically incorrect assembly sequences in which known technological heuristics are violated, for example orderliness in accuracy, consistency with the system of dimension chains, etc.An AssemBL software application package has been developed for a structured analysis of products and a synthesis of assembly plans and decompositions. The AssemBL uses a hyper-graph model of a product that correctly describes coherent and sequential assembly operations and processes. In terms of the hyper-graph model, an assembly operation is described as shrinkage of edge, an assembly plan is a sequence of shrinkages that converts a hyper-graph into the point, and a decomposition of product into assembly units is a hyper-graph partition into sub-graphs.The AssemBL solves the problem of minimizing the number of direct checks for geometric solvability when assembling complex products. This task is posed as a plus-sum two-person game of bicoloured brushing of an ordered set. In the paradigm of this model, the brushing operation is to check a certain structured fragment for solvability by collision detection methods. A rational brushing strategy minimizes the number of such checks.The package is integrated into the Siemens NX 10.0 computer-aided design system. This solution allowed us to combine specialized AssemBL tools with a developed toolkit of one of the most powerful and popular integrated CAD/CAM /CAE systems.
Computational Experiments to Evaluate the Approaches to the Modeling of Viscoelastic Plates Motion Based on Various Theories
Authors: Khudayarov B. A. 
Published: March 2019

Mathematical and computer modeling of the flutter of elements and units of the aircraft design is an actual scientific problem; its study is stimulated by the failure of aircraft elements, parts of space and jet engines. In view of the complexity of the flutter phenomenon of aircraft elements, simplifying assumptions are used in many studies. However, these assumptions, as a rule, turn out to be so restrictive that the mathematical model ceases to reflect the real conditions with sufficient accuracy. Therefore, results of theoretical and experimental studies are in bad agreement.At present, the problem of panel flutter is very relevant. Improvement of characteristics of military and civil aircraft inevitably requires reducing their weight, and consequently, the rigidity of paneling, which increases the possibility of a panel flutter. The concept of creating the aircraft with a variable shape, which would inevitably lead to a reduction in paneling thickness are actively discussed. Finally, the use of new materials and, in particular, composites, changes physical properties of the panels and can also lead to a flutter.The above-mentioned scientific problem gives grounds to assert that the development of adequate mathematical models, numerical methods and algorithms for solving nonlinear integral-differential equations of dynamic problems of the hereditary theory of viscoelasticity is actual.In connection with this, the development of mathematical models of individual elements of aircraft made of composite material is becoming very important.Generalized mathematical models of non-linear problems of the flutter of viscoelastic isotropic plates, streamlined by a supersonic gas flow, are constructed in the paper on the basis of integral models. To study oscillation processes in plates, a numerical algorithm is proposed for solving nonlinear integro-differential equations with singular kernels. Based on the developed computational algorithm, a package of applied programs is created. The effect of the singularity parameter in heredity kernels on the vibrations of structures with viscoelastic properties is numerically investigated. In a wide range of changes in plate parameters, critical flutter velocities are determined. Numerical solutions of the problem of viscoelastic plate flutter are compared for different models. It is shown that the most adequate theory for investigating a wide class of problems of the hereditary theory of viscoelasticity is the geometric nonlinear Kirchhoff-Love theory with consideration of elastic waves propagation. It is established that an account of viscoelastic properties of plate material leads to 40-60% decrease in the critical flutter velocity.
II Jornadas Argentinas de Aracnología - Libro de Resúmenes
Authors: González Alda 
Published: March 2019

II Jornadas Argentinas de Aracnología- Libro de Resúmenes19 al 21 de septiembre de 2018CCT CONICET La PlataOrganizado por:CEPAVE: Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata-CONICETINIBIOLP - Facultad de Ciencias Médicas, Universidad Nacional de La Plata -CONICET Comisión Organizadora Alda GonzálezMónica CunninghamFernando GarcíaAldana LainoSergio Rodríguez GilSofía RomeroCecilia GabelloneAndrea ArmendanoSandra GonzálezGuillermo ReboredoLuis Giambelluca Colaboradores Pablo AddamoFlavia CassinelliNicolás LischettiKevin PonsFrancisco GiambellucaCarolina Abril CasanovasMatías Bianco
Proceedings of the Sixth Quadrennial Meeting of the International Heteropterists´ Society
Authors: Melo María Cecilia , Dellapé Pablo M. , Montemayor Sara , Dellapé Gimena , Olivera Leonela , Minghetti Eugenia , Varela Pablo 
Published: March 2019

3 - 7 de December 2018, Museo de La Plata, Argentina Program Committe:M. Cecilia MeloPablo M. DellapéSara I. MontemayorGimena DellapéLeonela OliveraEugenia MinghettiPablo S. VarelaDivisión Entomología, Museo de la PlataFacultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata
Rodent Control Strategies in Hospitals
Authors: Desoky Abd El-Aleem Saad 
Published: March 2019

An infestation of rodents in a healthcare facility is especially dangerous because these pests can carry disease and spoil food with the bacteria and viruses they harbor in their saliva and droppings. Exposure to dangerous pathogens could be disastrous for already health-compromised patients. The aim of the study is to implement an integrated control program for rodents inside hospitals and to clarify the most important preventive methods that can be used in the control process and to make some important observations in the application of methods of integrated control of rodents to obtain the best program for rodent control in hospitals.
Mappism: formalizing classical and artificial life views on mind and consciousness
Authors: Bładek Iwo , Komosinski Maciej , Miazga Konrad 
Published: March 2019

Abstract
Throughout centuries philosophers have attempted to understand the disparity between the conscious experience and the material world – i.e., the problem of consciousness and the apparent mind–body dualism. Achievements in the fields of biology, neurology, and information science in the last century granted us more insight into processes that govern our minds. While there are still many mysteries to be solved when it comes to fully understanding the inner workings of our brains, new discoveries suggest stepping away from the metaphysical philosophy of mind, and closer to the computational viewpoint. In light of the advent of strong artificial intelligence and the development of increasingly complex artificial life models and simulations, we need a well-defined, formal theory of consciousness. In order to facilitate this, in this work we introduce mappism. Mappism is a framework in which alternative views on consciousness can be formally expressed in a uniform way, thus allowing one to analyze and compare existing theories, and enforcing the use of the language of mathematics, i.e, explicit functions and variables. Using this framework, we describe classical and artificial life approaches to consciousness.
Use of polypropylene mesh in superior posterior thoracoplasty
Authors: Belov S. A. , Grigoryuk A. A. 
Published: March 2019

Theobjectivewas to evaluate the possibilities of using the polypropylene mesh “Surgipro” to increase the compression and reduce the operational injury in extrapleural superior posterior thoracoplasty.Material and methods.64 cases of surgical treatment of fibrous-cavernous tuberculosis were studied. The volume of compression of the lung tissue and the effectiveness of the intervention were compared.Results.Clinical and radiologic examination of patients in three weeks after the operation indicates that occurrence of exacerbation, preservation of bacterial excretion and lack of compression are much lower in the group using polypropylene mesh. The use of polypropylene mesh “Surgipro” increases the degree of compression in the field of intervention and the effectiveness of thoracoplasty.Conclusion.The use of a mesh implant in thoracoplasty is reasonable and effective.
Determination of source parameters of simple-shaped geologic subsurface structures from self-potential anomalies using enhanced local wavenumber method
Authors: Pham Thanh Luan 
Published: March 2019

Simple geometry model structures can be useful in quantitative evaluation of self-potential data. In this paper, we solve local wavenumber equation to estimate the horizontal position, the depth and the type of the causative source geometry by using a linear least-squares approximation. The advantages of the algorithm in determining the horizontal position and depth measure are its independency to shape factor of the sources and also its simple computations. The algorithm is built in Matlab environment. The validity of the algorithm is illustrated on variable noise-free and random noise included synthetic data from two-dimensional (2-D) models where the achieved parametric quantities coincide well with the actual ones. The algorithm is also utilized to real self-potential data from Ergani Copper district, Turkey. The results from the actual data application are in good agreement with the published literature for the study area. The source code of the algorithm is available from the authors on request.
Health related quality of life following injury in low-and middle-income countries
Authors: Wainiqolo Iris , Kool Bridget , Nosa Vili , Ameratunga Shanthi 
Published: March 2019

Introduction: Health-related quality of life (HRQoL) is an important aspect to consider when assessing the non-fatal impact of injuries. The aim of this review was to critically appraise the range of generic instruments employed in the assessment of HRQoL following injury in low-and middle-income countries (LMICs). As a prelude to subsequent research examining longer-term outcomes following motor vehicle crash injuries in Fiji, we also examined how commonly used measures align with the List of All Deficits (LOAD) framework for injury and the Fonofale model of Pacific health and well-being.
Methods: A systematic search of four databases was conducted to identify injury outcome studies undertaken in low-and middle-income countries (LMICs) that used a generic health status outcome measure(s). Two separate content analyses were undertaken, to assess how identified HRQoL measures aligned with the LOAD framework and the Fonofale model.
Findings: Thirty two studies from thirteen LMICs examined variably defined aspects of HRQoL following a range of traumatic injuries (e.g. spinal cord, brain). The measures most commonly focused on the ‘impact on individual’ aspect of the LOAD framework and the ‘physical and mental’ aspects of the Fonofale model. While the emerging literature from LMICs provides valuable information about the HRQoL of trauma patients, the commonly used generic measures provided limited insights regarding societal impacts, culture and spirituality, domains of relevance to injury research and Pacific health and well-being.
Conclusion: Theoretical frameworks relevant to Pacific contexts should be considered when selecting appropriate outcome measures for injury studies in the region.
Nuestros pacientes, lo más importante.
Authors: Del Valle Hernández Emilio 
Published: March 2019

En anteriores editoriales, se ha abordado desde diferentes puntos de vista, la formación y como llegar a ser un buen cirujano colorrectal. En esta ocasión, quiero incidir en el mismo asunto desde otro punto de vista, esto es, la importancia de tener al paciente como centro de nuestra actividad y la obligación de caminar en nuestro aprendizaje y toma de decisiones, teniendo siempre en cuenta que lo principal es conseguir los mejores resultados desde la seguridad.
Nuestra especialidad está en constante crecimiento, fruto del desarrollo tecnológico y de la capacidad e innovación de los profesionales. Se presentan nuevas formas de abordaje quirúrgico, en ocasiones muy atractivas, que pretenden aportar soluciones a problemas complejos, siendo en ocasiones técnicamente muy demandantes y que requieren de un aprendizaje y entrenamiento previo, y sin embargo, en ocasiones las ponemos en práctica sin cumplir los requisitos imprescindibles.
ANTIBACTERIAL ACTIVITY OF CLOVE ESSENTIAL OIL AND EUGENOL AGAINST FISH PATHOGENIC BACTERIA ISOLATED FROM CULTURED OLIVE FLOUNDER (Paralichthys olivaceus)
Authors: Pathirana H. N. K. S. , Wimalasena S. H. M. P. , De Silva B. C. J. , Hossain S. , Gang-Joon Heo 
Published: March 2019

The antibacterial activity of clove (Syzygium aromaticum) essential oil (CEO) and eugenol was tested against seven Gram-negative and nine Gram-positive fish pathogenic bacteria isolated from cultured olive flounder (Paralichthys olivaceus) in Korea. Eugenol was >99% concentrated and CEO consisted of seven chemical compounds including 83.63% of eugenol. Disk diffusion assay, MIC (minimum inhibitory concentration) and MBC (minimum bactericidal concentration) tests showed CEO and eugenol inhibited the growth of both Gram-negative and Gram-positive bacteria. CEO (MBC/MIC= 1-2) and eugenol (MBC/MIC= 1-4) were bactericidal for all tested strains. The percentage of relative inhibition zone diameter exhibited high values at higher concentration of both CEO and eugenol. Positive correlation was observed between MAR index values and MIC values of CEO (r =0.61) and eugenol (r =0.15). Since antibacterial activity of CEO and eugenol were effective against fish pathogenic bacteria, the use of CEO and eugenol could be advantageous to treat bacterial infections in aquaculture.Key words: antibacterial activity; clove essential oil (CEO); eugenol; fish pathogenic bacteria; olive flounderPROTIBAKTERIJSKA AKTIVNOST ETERIČNEGA OLJA NAGELJNOVIH ŽBIC IN EVGENOLA PROTI PATOGENIM BAKTERIJAM RIB, IZOLIRANIH IZ GOJENEGA MORSKEGA LISTA (Paralichthys olivaceus) Protibakterijsko delovanje eteričnega olja nageljnovih žbic (Syzygium aromaticum) (CEO) in evgenola je bilo testirano pri sedmih vrstah po Gramu negativnih in devetih vrstah po Gramu pozitivnih patogenih bakterij, ki so bile izolirane iz gojenega morskega lista (Paralichthys olivaceus) v Južni Koreji. Evgenol je bil 99-odstotno koncentriran, CEO pa je sestavljalo sedem kemičnih spojin, med njimi je bilo največ evgenola, ki je predstavljal 83,odstotka eteričnega olja. Metoda difuzije v trdem gojišču, minimalna zaviralna koncentracija (MIC) in minimalna baktericidna koncentracija (MBC) so pokazale, da sta CEO in evgenol zavirala rast tako po Gramu negativnih kot po Gramu pozitivnih bakterij. CEO (MBC/MIC = 1-2) in evgenol (MBC/MIC = 1-4) sta bila baktericidna za vse testirane seve. Odstotek velikosti relativne zaviralne cone je bil visok pri višji koncentraciji CEO in evgenola. Pozitivna soodvisnost je bila opažena med vrednostmi indeksa MAR in vrednostmi MIC pri CEO (r = 0,61) in evgenolu (r = 0,15). Ker sta CEO in evgenol pokazala učinkovito delovanje proti patogenim bakterijam rib, bi bila uporaba CEO in evgenola lahko uporabna za zdravljenje bakterijskih okužb v ribogojništvu.Ključne besede: antibakterijsko delovanje; eterično olje klinčkov (CEO); evgenol; patogene bakterije rib; morski list
Pro-ecological activities in a supply chain and performance achieved through their implementation
Authors: Maryniak Anna 
Published: March 2019

Nowadays in the world of science and business, the topic concerning the need to implement pro-ecological approach related to the movement of products in the supply chain and its impact on marketing, financial and logistic aspect is being increasingly addressed. However, there are few empirical studies that relate to Polish conditions or that present the issue in comprehensive manner. Therefore this study focuses both on strategic and operational management in the supply chain, and on the relations between consignor and consignee as well as on the subject of supply chain flow. The study aims to assess the impact of pro-ecological activities carried out in the supply chain for tested link as well as supply chain, and to assess the intensity of these activities.
The competitive position of the low cost carrier Wizz Air on the Polish market of air transport services
Authors: Tłoczyński Dariusz 
Published: March 2019

In the air transport market, competitive processes are seen more and more in terms of intra-industry, hence air carriers strive to achieve a high competitive position. Thus, the main goal of the research undertaken in the article is to assess the competitive position of the Hungarian air carrier Wizz Air. On the basis of the presented objective, the factors influencing the achievement of competitive position by enterprises were analyzed. The article uses available secondary sources in relation to the Polish air transport market. When analyzing the functioning of Wizz Air, the airports in which the aircarrier conducts operational activities were selected. The comparative analysis was carried out on selected routes where competition between Wizz Air and other carriers takes place.
Rational distribution of the high-speed railway capacity between trains of various categories
Authors: Myronenko Viktor , Matsiuk Viacheslav 
Published: March 2019

The article presents a methodology for the distribution of available capacity of high-speed railways, in the conditions of equal access to the railway infrastructure of different participants of the transport market. This will allow maximizing the efficiency of using available capacity of high-speed railways, while simultaneously organizing freight and passenger transportation.