Littérature scientifique sur le sujet « Area of given degree »
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Articles de revues sur le sujet "Area of given degree"
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Rushton, G., et J.-C. Thill. « The Effect of Distance Metric on the Degree of Spatial Competition between Firms ». Environment and Planning A : Economy and Space 21, no 4 (avril 1989) : 499–507. http://dx.doi.org/10.1068/a210499.
Texte intégralRésumé :
The proportion of a firm's market-area that is within a given, small, proportional difference in delivered-price between itself and its principal competitor, is an important measure of spatial competition. It is shown that for regular triangular and irregular spatial patterns of firms, areas of intense spatial competition are larger when transport costs are proportional to euclidean distances rather than to block distances, but this is not true for a regular square pattern. In an irregular pattern of firms, for each metric, the proportion of a firm's market-area in the area of intense spatial competition varies markedly from firm to firm. The locational and pricing behavior of firms is expected to be influenced by the size and locations of these areas of spatial competition.
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Takase, B., et N. Miyauchi-Isobe. « A Survey for Ultraviolet-Excess Galaxies by the Kiso Schmidt Telescope ». Symposium - International Astronomical Union 161 (1994) : 615–17. http://dx.doi.org/10.1017/s0074180900048208.
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We have detected 8,968 ultraviolet-excess galaxies in a sky area of some 5,100 square degrees by means of the UGR three-image photographs with the 105 cm Kiso Schmidt, giving a number density of 1.8 per square degree. A net count of the objects is 8,162, deleting those which appear repeatedly in the neighbouring survey area. For each of these galaxies which we call KUGs, data including morphological type and UV-excess degree are listed in a catalogue series of 18 volumes. Some statistics of these KUGs are also given in the last volume.
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Pitak, Ya N., G. V. Lisachuk, R. V. Krivobok, O. Ya Pitak, М. А. Chirkina, A. P. Grebenyuk et B. A. Karputin. « Structure of the system SrO—SiO2—TiO2 and its importance in the technology of technical ceramics ». Scientific research on refractories and technical ceramics 117 (11 juillet 2017) : 160–66. http://dx.doi.org/10.35857/2663-3566.117.15.
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Coexisting phases in the system SrO—SiO2—TiO2 are established. The elementary triangles, their relative area and asymmetry degree of the system SrO—SiO2—TiO2 are given. Geometrical-topological characteristics of the phases of the system are given. The areas of composition of the system, the most promising in technology of technical ceramics, are determined.
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Alonso, Patricia Dominguez. « Spanish Working End Of Law Degree In The European Higher Education Area ». Journal of International Education Research (JIER) 7, no 5 (3 octobre 2011) : 29–32. http://dx.doi.org/10.19030/jier.v7i5.6114.
Texte intégralRésumé :
The working end of Law Degree is called to develop an important role when we consider that the European Higher Education Area is the student manager of his own learning and is considered essential that the student of law, among other skills, to acquire critical thinking skills, investigation techniques, personal development work and use of legal principles and fundamental values as a working tool in the interpretation of the legal system. The development of the working end of Law Degree in order to allow the student to a specific topic in depth and learn to develop a basic legal research. The work will enable the assessment of skills associated with the title of Bachelor of Laws. To highlight an element of the research is that development of it should be conducted in an orderly and systematic manner for which the teacher's work is essential from the outset. In this sense, the student, with guidance from the teacher must identify a target as the first topic of study. Much of the importance of the work lies in the student's learning method and technique to use. At this point, given that the study is done in the legal field, the work must be developed in stages, which are discussed in the communication. One final aspect to take into account and that is also the subject of analysis is the defense of the research to be undertaken before a court of teachers. The paper shall provide thoughts on what this job should be to grade, allowing students to deepen a specific topic and learn how to develop a basic legal research. It also examines the role to develop both the tutor and the student throughout the work until the presentation and defense of the court appointed by the Faculty concerned.
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Bârsan, Ghiţă, Anca Dinicu, Vasile Năstăsescu et Romana Oancea. « Estimating the Degree of Region’s Vulnerability in Case of Natural Disasters ». International conference KNOWLEDGE-BASED ORGANIZATION 22, no 3 (1 juin 2016) : 501–5. http://dx.doi.org/10.1515/kbo-2016-0086.
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Abstract Estimating the degree of vulnerability of a region implies both the identification of the dependencies as well as of the interdependencies. The dependencies refer to a set of physical, social, economic, environmental and political-military conditions and processes and the interdependencies have in view physical, cyber, geographical and logical aspects that may indirectly affect the daily rhythm of the population, the economy or even the national security. The present paper aims at estimating the degree of vulnerability by constructing a model that would determine the index of vulnerability associated to a given area, an index that is directly dependent on demographic, economic, governmental factors, on the interdependence with other sectors and also on the history of the events that occurred in the area in the recent years.
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Mahat, Yogesh. « Reverse Definite Integral of Algebraic Functions ». Journal of Mathematics Research 10, no 1 (17 novembre 2017) : 25. http://dx.doi.org/10.5539/jmr.v10n1p25.
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In this work, an algebraic function is considered and integrated the function with some particular boundaries to obtain the area. Through the help of the area obtained and given boundaries, we determined different functions of different degree. Also, found a relationship between them.
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Sun, Zeyu, Chuanfeng Li, Xiaofei Xing, Huihui Wang, Ben Yan et Xuelun Li. « k-degree coverage algorithm based on optimization nodes deployment in wireless sensor networks ». International Journal of Distributed Sensor Networks 13, no 2 (février 2017) : 155014771769324. http://dx.doi.org/10.1177/1550147717693242.
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In the process of the wireless sensor network research, the issue on the energy consumption and coverage is an essential and critical one. According to the characteristic of the sensor nodes, it is homogeneous, and we proposed the k-degree coverage algorithm based on optimization nodes deployment. First, the algorithm gives the solving procedure of the maximum seamless coverage ratio, when the three-node joint coverage has been provided. Second, when the sensor nodes are covering the monitoring area, the algorithm gives the solving procedure of the expected coverage quality and the judgment methods of the coverage ratio, when the nodes are compared with the nearby ones. And when there is redundancy coverage in the given monitoring area, we have given the solving procedure of any sensor nodes that exist in the redundant nodes coverage. Finally, using the simulation experiment, the results of the coverage algorithm based on optimization nodes deployment are compared with other algorithms in terms of the coverage quality and the network lifetime, the performance indexes have enhanced to 13.36% and 12.92% on average. Thus, the effectiveness and viability of the coverage algorithm based on optimization nodes deployment have been proved.
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Assaf, Mahmoud A. R. « Management level of Intellectual Capital in the Palestinian Universities from the Perspective of Faculty Members in Relationship to the Aspects of Excellence ». Arab Journal For Quality Assurance in Higher Education 10, no 32 (22 novembre 2017) : 139–71. http://dx.doi.org/10.20428/ajqahe.v10i32.1244.
Texte intégralRésumé :
The study aimed to identify the degree of assessment given by faculty members of the Palestinian universities about their efforts in managing the intellectual capital, and to identify the aspects of excellence mostly preferred by them and the relationship between these aspects. To achieve the objectives of the study, the researcher followed the descriptive method by applying two questionnaires: the first consisting of (37) items; and the second comprising (28) items distributed to (4) areas. The sample consisted of (229) faculty members from these universities: (Al-Azhar, the Islamic university and al-Aqsa). They were selected using the random stratified method. The results were as follows:
The respondents’ total degree of assessment of the efforts exerted by the universities in intellectual capital was at the rate of (63.8%), which is a medium degree. The area of (management of relations) came in first place at a rate of (71.2%) with a large degree. The ‘management of intellectual and organizational assets’ was given the last rank with a medium degree and the rate of (56.80%)
The aspect of excellence that was given the first rank by the respondents was the (development of faculty members and teaching) at the rate of (65.2 % ), and with a medium degree. The least trend is (supporting talent and creativity ) which came in the last rank, with a medium degree and a rate of (59.4%).
There was a statistically significant correlation of (α≤0.05) between the degree of respondents’ assessment of university efforts in managing intellectual capital and their assessment of the aspects of excellence, recording a correlation coefficient of (0.737 ).
Keywords: Aspects of excellence, Intellectual capital, Efforts of Palestinian Universities.
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CAI, LEIZHEN, et J. MARK KEIL. « DEGREE-BOUNDED SPANNERS ». Parallel Processing Letters 03, no 04 (décembre 1993) : 457–68. http://dx.doi.org/10.1142/s0129626493000484.
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Given a graph G, a spanning subgraph H of G is a t-spanner if for every edge xy of G, the distance in H between x and y is at most t. Spanners have applications in communication networks, distributed systems, parallel computation, and other areas. This paper is concerned with the complexity of determining whether a graph contains a t-spanner whose maximum degree is at most Δ, where Δ, t≥2 are fixed integers. The problem is shown to be NP-complete for any fixed Δ≥4 and t≥2, and linear for Δ=2 and any fixed t≥2. The problem for Δ=3 is open. Furthermore, if the t-spanner in the problem is required to be a tree, then the problem becomes linear. The problem also becomes linear when input graphs are partial k-trees for some fixed integer k.
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KAREVA, E. S., et G. A. GULAMANOVA. « CONDITION OF PRIMARY PRODUCERS COMMUNITIES IN THE AREA OF THE CITY OF UFA WASTEWATER BIOLOGICAL TREATMENT PLANTS’ DISCHARGE ». Urban construction and architecture 2, no 3 (15 septembre 2012) : 59–64. http://dx.doi.org/10.17673/vestnik.2012.03.13.
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Prediction and assessment of ecological condition of watercourse receiving wastewater can be made with the use of a variety of methods including hydrobiological and some others.The article describes the study of wastewater effects on the degree of phytoplankton growing in the area within 500m up and down the Belaya River from the city wastewater treatment plant and Demsk sewage treatment plants of Ufa. Basic structural and quantitative characteristics of autotrophic plankton are analyzed. The degree of organic pollution according to indicator groups is identified. The estimation of one of the basic components of aquatic ecosystem structure is given.
Thèses sur le sujet "Area of given degree"
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Mehrdad, Behzad. « Random Sparse Graphs with a Given Degree Sequence ». Thesis, New York University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3635276.
Texte intégralRésumé :
Let GD be the set of graphs G(V, E) with n vertices, and the degree sequence equal to D = (d1, d2,..., dn). In addition, for ½ < a < 1, we define the set of graphs with an almost given degree sequence D as follows:
Ga(D): = ∪ G(D'),
where the union is over all degree sequences D¯ such that, for 1 ≤ i ≤ n, we have |d i-d'i|< (di)a.
Now, we choose random graphs Gg(D) and Ga(D) uniformly out of the sets G(D) and Ga(D) , respectively, which we call random graphs with given and almost given degree sequence D. We first survey the known results about graphs and random graphs with a given degree sequence. This has been studied when Gg(D) is a dense graph, i.e. |E|=Θ(n2), in the sense of graphons, or when Gg(D) is very sparse, i.e. (dn)2=o(|E|).
Second and in the case of sparse graphs with an almost given degree sequence, we investigate this question, and give the finite tree subgraph structure of Ga(D) under some mild conditions. For the random graph Gg(D) with a given degree sequence, we re-derive the finite tree structure in dense and very sparse cases to give a continuous picture.
Finally, for a pair of integer vectors (D1, D 2) ∈ Z(n1) × Z (n2), we let Gb(D1, D2) be the random bipartite graph that is chosen uniformly out of the set G(D1, D2), where G(D1, D2) is the set of all bipartite graphs with the degree sequence (D1, D2). We are able to show the result for Gb(D1, D 2) without any further conditions.
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Biyikoglu, Türker, et Josef Leydold. « Graphs with given degree sequence and maximal spectral radius ». Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 2008. http://epub.wu.ac.at/1160/1/document.pdf.
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We describe the structure of those graphs that have largest spectral radius in the class of all connected graphs with a given degree sequence. We show that in such a graph the degree sequence is non-increasing with respect to an ordering of the vertices induced by breadth-first search. For trees the resulting structure is uniquely determined up to isomorphism. We also show that the largest spectral radius in such classes of trees is strictly monotone with respect to majorization. This paper is the revised final version of the preprint no. 35 of this research report series. (author´s abstract)Series: Research Report Series / Department of Statistics and Mathematics
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Pineda-Villavicencio, Guillermo. « Topology of interconnection networks with given degree and diameter ». Thesis, University of Ballarat, 2009. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/63797.
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Pineda-Villavicencio, Guillermo. « Topology of interconnection networks with given degree and diameter ». University of Ballarat, 2009. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/14061.
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Bhuiyan, Md Hasanuzzaman. « Parallel Algorithms for Switching Edges and Generating Random Graphs from Given Degree Sequences using HPC Platforms ». Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/80299.
Texte intégralRésumé :
Networks (or graphs) are an effective abstraction for representing many real-world complex systems. Analyzing various structural properties of and dynamics on such networks reveal valuable insights about the behavior of such systems. In today's data-rich world, we are deluged by the massive amount of heterogeneous data from various sources, such as the web, infrastructure, and online social media. Analyzing this huge amount of data may take a prohibitively long time and even may not fit into the main memory of a single processing unit, thus motivating the necessity of efficient parallel algorithms in various high-performance computing (HPC) platforms. In this dissertation, we present distributed and shared memory parallel algorithms for some important network analytic problems.
First, we present distributed memory parallel algorithms for switching edges in a network. Edge switch is an operation on a network, where two edges are selected randomly, and one of their end vertices are swapped with each other. This operation is repeated either a given number of times or until a specified criterion is satisfied. It has diverse real-world applications such as in generating simple random networks with a given degree sequence and in modeling and studying various dynamic networks. One of the steps in our edge switch algorithm requires generating multinomial random variables in parallel. We also present the first non-trivial parallel algorithm for generating multinomial random variables.
Next, we present efficient algorithms for assortative edge switch in a labeled network. Assuming each vertex has a label, an assortative edge switch operation imposes an extra constraint, i.e., two edges are randomly selected and one of their end vertices are swapped with each other if the labels of the end vertices of the edges remain the same as before. It can be used to study the effect of the network structural properties on dynamics over a network. Although the problem of assortative edge switch seems to be similar to that of (regular) edge switch, the constraint on the vertex labels in assortative edge switch leads to a new difficulty, which needs to be addressed by an entirely new algorithmic approach. We first present a novel sequential algorithm for assortative edge switch; then we present an efficient distributed memory parallel algorithm based on our sequential algorithm.
Finally, we present efficient shared memory parallel algorithms for generating random networks with exact given degree sequence using a direct graph construction method, which involves computing a candidate list for creating an edge incident on a vertex using the Erdos-Gallai characterization and then randomly creating the edges from the candidates.Ph. D.
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Royes, Buisan Jordi. « Complementary synthesis of organoboranes to populate the chemical functionality to a given area of biomedical interest ». Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668966.
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Aquesta tesi està relacionada amb el desenvolupament de noves metodologies per la incorporació de grups borilo en compostos amb propietats potencialment interessants en el camp biomèdic. Amb aquest objectiu, en la present tesi s'han utilitzat reactius de bor-sofre, reactius geminals-diborilats o el reactiu diborà disponibles comercialment com el B2pin2 que és el més comunament utilitzat. L'àmplia varietat de reactius que contenen bor ha permès el desenvolupament de noves rutes per proporcionar productes cíclics d'alt interès. L'accés a aquestes molècules de gran funcionalitat es pot aconseguir a través de dues vies principals: mitjançant deborilació o per ciclació borilativa. El primer mètode està relacionat amb el capítol 3, en el qual la deborilació pot realitzar-se mitjançant l’addició d’una base, per reaccionar amb un electròfil, donant accés a molècules altament funcionalitzades. Relacionat amb la formació de cicles, en els capítols 4 i 6 s'estudien nous mètodes de ciclación borilativa d’alquens amb grups C-X o aldehids, per permetre la formació d’estructuras espiro bicíclicas amb un grup metilene boronato i, en el segon cas, la incorporació de la unitat d'hidroxil a través del grup aldehid. A més, el mètode desenvolupat en el capítol 4, ha demostrat la seva capacitat d'aplicació e interès en la química farmacèutica ja que en el capítol 5 es descriu una àmplia varietat de rutes i mètodes sintètics per a la formacio de productes espiro-bicíclics, que són susceptibles de ser medicaments per al tractament de l'Alzheimer. Aquest projecte va ser desenvolupat en col·laboració amb la companyia farmacèutica Janssen Cilag, de Johnson & Johnson amb seu a Toledo.Esta tesis está relacionada con el desarrollo de nuevas metodologías para la incorporación de grupos borilo en compuestos con propiedades potencialmente interesantes en el campo biomédico. Con este objetivo, en esta tesis se han utilizado reactivos de boro-azufre, reactivos geminales-diborilados o el diborano disponible comercialmente B2pin2 más comúnmente utilizado a día de hoy. La amplia variedad de reactivos que contienen boro ha permitido el desarrollo de nuevas rutas para proporcionar productos cíclicos de alto interés. El acceso a estas moléculas de gran funcionalidad se puede lograr a través de dos vías principales: por deborilación o por ciclación borilativa. El primer método está relacionado con el capítulo 3, en el que la deborilación puede realizarse mediante la adición de una base, que favorece la inetracción con un electrófilo, dando acceso a moléculas altamente funcionalizadas. Relacionado con la formación de ciclos, en los capítulos 4 y 6 se estudian nuevos métodos para la ciclación borilativa de alquenos con grupos C-X o aldehídos, para permitir la formación de estructuras espiro bicíclicas con un grupo metilene boronato y, en el segundo caso, la incorporación de un unidad de hidroxilo con total control de la diastereoselectiviad. Además, el método desarrollado en el capítulo 4, ha permitido la aplicación directa de la metodología para la síntesis de productos espiro-bicíclicos que son susceptibles de ser utilizados para el tratamiento del Alzheimer. Ese proyecto fue desarrollado en colaboración con la compañía farmacéutica Janssen Cilag, de Johnson & Johnson con sede en Toledo.
This thesis is related to the development of new synthetic methodologies to introduce boryl moieties in compounds with potential biomedical properties. Towards this end, boron sulfur reagents, geminal-diboryl reagents or the most common commercially available diboron reagent B2pin2, have been used in this thesis. The wide variety of boron containing reagents has allowed the development of new routes to provide cyclic products of high interest. The access to these building blocks can be achieved through two different main pathways: via deborylation or borylative cyclization. The first method is related to chapter 3, where the activation of polifunctional systems such as CH(B)(S)(Si) can be tuned by the addition of base giving access to alkylation reactions. Moreover, chapters 4 and 6 are related to the development of new methods for the borylative ring closing of alkenyl halides or aldehydes, to afford the formation of spiro bicyclic structures with a pendant boronate group and in the second case as well the incorporation of the hydroxyl unit with total control of the diastereoselectivity. The developed methodology described in chapter 4 was directly applied to chapter 5 for the synthesis of spiro bicyclic products which are susceptible to be drugs for the treatment of Alzheimer’s disease. That project was developed in collaboration with the pharmaceutical company Janssen Cilag, from Johnson & Johnson in Toledo.
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Salo, A. (Aleksi). « Geology of the Jaakonlampi area in the Siilinjärvi carbonatite complex ». Bachelor's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201604091452.
Texte intégralRésumé :
The objective of this work was to describe the lithology and structures of the Jaakonlampi area of the Siilinjärvi alkali complex, eastern Finland. The research area is located directly north of the currently mined Särkijärvi open pit of the Siilinjärvi apatite mine. A drilling project to increase the knowledge on the phosphorus-bearing mineralization in the Jaakonlampi area was commenced in 2014. The defined lithological units and structural model were based on field observations and Yara Siilinjärvi Mine’s geological database and employed in resource estimation on the Jaakonlampi area.
The Jaakonlampi area consists of carbonatite, silicocarbonatite, carbonate-glimmerite and glimmerite, with fenite xenolith-bearing margins in contact with metasomatically produced fenite halo. A regional NE-SW-trending shear zone affects the northern part of the Jaakonlampi area. The alkali complex is cut by Svecofennian mafic and intermediate dikes, with varying age and composition. A previously unknown felsic pegmatitic dike was identified from the northwest part of the Jaakonlampi area. Four deformation phases were identified in the study area. The use of structural geology gives the ore evaluation process a better control over the calculation parameters in different areas, as all the lithological domains are affected by regional and local faulting and shearing.
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Kluge, Rolf. « Preselection of Electronic Services by Given Business Service Based on Measuring Semantic Heterogeneity within the Application Area of Logistics ». Doctoral thesis, Universitätsbibliothek Leipzig, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-98543.
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According to the service orientation design paradigm there are business (BS) and electronic services (ES). BS encapsulate business concerns. ES encapsulate computing systems, information systems and software applications. In environments with a high number of BS and ES the decision on which ES provides the most suitable support for a certain BS is not a trivial task. The objective of the thesis is to provide models, methods, and techniques for preselection of ES for a given BS. Preselection is about reducing the large amount of ES to a significant smaller amount under the consideration of a particular BS.
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Pantshwa, Zimasa Prudence. « Exploring learning and teaching support given by principals to Grade R teachers in Mqanduli Area in the Eastern Cape ». Thesis, Walter Sisulu University, 2013. http://hdl.handle.net/11260/d1007197.
Texte intégralRésumé :
The study was conducted in the Mthatha District, Mqanduli area, and it sought to enquire about the role of junior secondary school principals in supporting Grade R teachers in order to make teaching and learning in the Grade R classes effective. The researcher has noticed with concern the poor conditions of Grade R classes in the schools and felt a need for proper support. She felt the principal could champion the concept of support better, in his capacity as a manager in the school. Studies in Early Childhood Development have been done, and they pertained to all aspects of child development, parental support etc., but studies that view support from a managerial perspective in Mthatha District are scarce. Under quantitative research design, a survey research method was employed to collect a large portion of the data. A questionnaire consisting of closed and open ended questions was used in order to collect data from the Grade R teachers. Open ended questions were used in order to get a broader view and perceptions. Comprehensive sampling was used in this study because the whole population fell into the sample. All ethical considerations were observes and after receipt of permission to conduct research in the schools, a questionnaire was distributed personally to all the schools in the sample. Data was analyzed by means of the SPSS. Some of the findings identified in the study pertained to: the need for material support including good infrastructure, poor communication between principal and Grade R teacher, scarce meetings specifically for Grade R. The individual findings, together with the implications were discussed in relation to the research questions. The researcher recommended that technical support should be attended to and the principal must communicate frequently with the Grade R teacher. Financial limitations and negative attitudes from some principals were the major limitations the researcher encountered.
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Virk, M. (Muhammad). « Design and implementation of a multi-purpose Wireless Body Area Network ». Master's thesis, University of Oulu, 2013. http://urn.fi/URN:NBN:fi:oulu-201306061569.
Texte intégralRésumé :
A wireless body area network (WBAN) is a collection of miniaturized and energy efficient wireless sensor nodes which monitor human body functions and its surroundings. It has been observed that WBANs perform single application per network, computation and storage capacities are scarce and there is no or limited mobility support. Technically complex WBAN application solutions today, find refuge in processing computationally complex data external to WBANs, i.e., processing sensor data on a conventional PC which is impractical and clumsy. There is a strong need for WBAN platforms which can perform computationally complex tasks on their own having enough resources in terms of computation and memory but still consuming as low power as possible in order to prolong network uptime.
In this thesis work, an improved WBAN named multipurpose-BodyNet (MPBodyNet) is implemented. It has enough computational and memory resources and compact software solutions to achieve high performance and fidelity. MPBodyNet is a self-configuring, multipurpose WBAN which can perform multiple applications and user can switch between applications by a mere push of button. It supports mobility and it acts like an agent network to other networks. MP-BodyNet forms a hierarchy where low-capability networks are supported by higher-capacity networks.
Hardware used for MP-BodyNet has been designed by WSN-Team at Centre for Wireless Communications, University of Oulu and this thesis proposes two application scenarios. Senior citizen protection mode (SPM) deals with a very hot health care issue for elderly people and patients. An algorithm is proposed and implemented that can detect falls or if the subject/patient has fainted. In SPM, MP-BodyNet can generate alarms in case of emergency and events can be seen on a central server as well as a special alarm is generated to the user’s phone (android app.) which can in turn establish an emergency call automatically. Algorithmic efficiency achieved is 100%.
Silent communication mode (SCM) deals with a military hand signal/gesture recognition application. A quite complex pattern recognition algorithm has been proposed with two novelties in it i.e., a sampling process is introduced in the algorithm and the whole algorithmic processing is supposed to be done on the sensor node itself, no processing is supposed to be happening external to the WBAN. Algorithm for SCM is only presented here conceptually after rigorous research about the subject at disposal. It is not implemented in this thesis due to lack of time and is saved for future development. After a gesture would be recognized, an audio message mapped to the gesture will be heard over a headphone.
Livres sur le sujet "Area of given degree"
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Evans-Brightmore, Jacqueline. Reasons given by first year undergraduates for degree subject choice. Birmingham : University of Central England in Birmingham, 1992.
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University of East London. Department of Sociology. Degree in Social Work Studies : year three : Social work subject area. London : The University, 1994.
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Aleshnikova, Vera. Introduction to Territory Marketing. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1200565.
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The textbook allows you to form competencies in the field of specialized marketing activities - territory marketing. In the theoretical part of the manual, modern concepts, technologies, methods and strategic aspects of territory marketing are outlined; an idea is given about the specifics of the tools of marketing management of the territory, including digital marketing, cluster marketing, crowdsourcing, branding; individual aspects of interaction with consulting firms are considered. To consolidate theoretical knowledge and form practical skills in each chapter, the theoretical material is accompanied by self-control questions and practical tasks.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For students in the bachelor's degree 38.03.02 "Management", it can also be useful for students in the master's degree 38.04.02 "Management", students of business schools, advanced training programs, practitioners engaged in regional management and marketing.
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Kekem, A. J. Van. Soils of the Mount Kulal Marsabit area : (quarter degree sheets 41,42,43,54 and 55). Nairobi : Kenya Soil Survey [1986?], 1986.
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Aldiss, D. T. The geology of the Shashe area : An explanation of quarter degree sheet 2127A. Lobatse, Botswana : Director, Geological Survey Dept., 1989.
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A, Smith R. The geology of the Foley area : An explanation of quarter degree sheet 2127C. Lobatse, Botswana : Director, Geological Survey Dept., with the authority of Ministry of Mineral Resources and Water Affairs, Republic of Botswana, 1985.
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Vinogradov, Vitaliy, et Aleksandr Cherepahin. Automation of technological processes and production. Introduction to the specialty. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/978917.
Texte intégralRésumé :
The textbook considers the stages of development of technology, mechanical engineering and production automation as the basis for designing technological machines and complexes. Examples of original design solutions for automation equipment and, in general, for modern technological complexes in mechanical engineering are given.
Meets the requirements of the latest generation of federal state educational standards.
It is intended for students of higher educational institutions studying in the bachelor's degree program 15.03.04 "Automation of technological processes and production".
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Boltanova, Elena, Nataliya Bagrova, Roman Bevzenko, Tat'yana Barishpol'skaya, Valeriya Goncharova, Svetlana Butenko, Eduard Gavrilov et al. Civil law. The special part. ru : INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1246684.
Texte intégralRésumé :
The textbook contains seven sections in which the relevant topics of the training course of a Special part of civil law are systematically and consistently presented. Certain types of obligations are highlighted, a general characteristic of inheritance law and rights to the results of intellectual activity and means of individualization is given.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For undergraduate and specialist students, as well as undergraduates, postgraduates, degree applicants and other persons interested in civil law.
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Ivanov, Anatoliy. Flexible modular assembly lines on a single structural basis. ru : INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1196558.
Texte intégralRésumé :
The textbook discusses topical issues of automating the assembly of an extensive range of machine and instrument-making products based on highly efficient robotic reconfigurable systems of a new generation built on a single structural basis. The possibility of fast organization of automated assembly of new types of products, which is provided by the presence of a flexible basic set as part of the complex (line), is shown. A complete set of original technical means for basic and service operations of assembly and control of products is described. Analytical conditions of automatic assembly are given, and recommendations on optimization of design solutions and modeling of projected assembly systems are given.
It is intended for students studying under the bachelor's degree programs, certified specialists and masters, teachers of technical universities, as well as designers, technologists and scientists dealing with the problem of complex assembly automation.
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Grigor'ev, Anatoliy, Evgeniy Isaev, Aleksandr Morgunov et Pavel Tarasov. Integrated object management systems. Embedded information systems. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1171989.
Texte intégralRésumé :
The textbook considers the most popular object management systems in business, providing the possibility of collective work of users united by common business processes, goals and objectives of production activities. It contains a description of management systems of various classes, embedded information systems, their structure, features of application and implementation in the activities of enterprises. The information about the state of the market of such systems in Russia is given, as well as descriptions of the most popular systems in each class are given.
The manual is based on the materials of lectures on the disciplines "Tools for supporting collective work" and "Information Systems in marketing", which are studied in the bachelor's degree of the National Research University "Higher School of Economics" at the Faculty of Business and Management.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For students of higher educational institutions studying in the areas of training 09.03.02 "Information systems and technologies", 38.03.02 "Management", as well as for students in other economic specialties and specialists in this field.
Chapitres de livres sur le sujet "Area of given degree"
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Ventura, Maria A., Ana C. Costa et Andrea Z. Botelho. « Community engagement with tourism management in small Atlantic islands. » Dans Tourism transformations in protected area gateway communities, 85–108. Wallingford : CABI, 2022. http://dx.doi.org/10.1079/9781789249033.0007.
Texte intégralRésumé :
Abstract Environmental non-governmental organizations (ENGOs) are groups of concerned citizens, working to improve the quality of life within communities, while preventing environmental degradation from economic activities. These groups assume an important role for populations inhabiting small islands, given their small territory, dependence on the import of goods and a focus on tourism to balance their fragile economies. In order to access the public commitment in developing sustainable tourism practices, key informant interviews were conducted with representatives of the ENGOs based on three archipelagos (Cabo Verde, Fernando de Noronha and Azores) aimed to characterize the ENGOs' mission and collect information on their projects and degree of involvement of local communities. An analysis of capital is applied to each research site in an effort to situate the role of ENGOs in their respective communities. The degree of commitment and official involvement in local tourism planning and management is different among the islands studied.
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van der Aalst, Wil M. P. « Process Mining : A 360 Degree Overview ». Dans Lecture Notes in Business Information Processing, 3–34. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08848-3_1.
Texte intégralRésumé :
AbstractProcess mining enables organizations to uncover their actual processes, provide insights, diagnose problems, and automatically trigger corrective actions. Process mining is an emerging scientific discipline positioned at the intersection between process science and data science. The combination of process modeling and analysis with the event data present in today’s information systems provides new means to tackle compliance and performance problems. This chapter provides an overview of the field of process mining introducing the different types of process mining (e.g., process discovery and conformance checking) and the basic ingredients, i.e., process models and event data. To prepare for later chapters, event logs are introduced in detail (including pointers to standards for event data such as XES and OCEL). Moreover, a brief overview of process mining applications and software is given.
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Deville, Michel O. « Boundary Layer ». Dans An Introduction to the Mechanics of Incompressible Fluids, 175–95. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04683-4_7.
Texte intégralRésumé :
AbstractThe Prandtl’s equations for laminar boundary layer are obtained via dimensional analysis. The case of the flat plate is treated as a suitable example for the development of the boundary layer on a simple geometry. Various thicknesses are introduced. The integration of Prandtl’s equation across the boundary layer produces the von Kármán integral equation which allows the elaboration of the approximate von Kármán-Pohlhausen method where the velocity profile is given as a polynomial. The use of a third degree polynomial for the flat plate demonstrates the feasibility of the approach.
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Molinatti, Florencia. « Socio-Economic Residential Segregation in Greater Buenos Aires : Evidence of Persistent Territorial Fragmentation Processes ». Dans The Urban Book Series, 451–69. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64569-4_23.
Texte intégralRésumé :
AbstractSocio-economic residential segregation is a common feature of almost all Argentinean cities, neatly divided into poor, middle-class, and affluent neighborhoods. At the end of the 1980s, and especially over the 1990s, the process of suburbanization for affluent and upper middle-class groups was consolidated as a generalized model. This study concentrates on the trends and the patterns of socio-economic segregation in Buenos Aires and focuses on two major dimensions of segregation: the spatial concentration patterns of a given social group in specific areas and the degree of social homogeneity within such areas. Socio-economic segregation is described using the highest level of education that a householder has completed as a proxy for socio-economic status. The indices of segregation and dissimilarity are used as the main measure to compare the level and changes of residential segregation but other metrics—such as location quotient index—are also used to estimate the degree of homogeneity or heterogeneity in neighboring areas. This study uses population and household census data from 1991, 2001, and 2010 provided by the National Institute of Statistics and Censuses (INDEC), and the data are presented at the spatial disaggregation level of block groups called ‘radios censales’.
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Pfoser, Sarah. « Conceptual Background ». Dans Decarbonizing Freight Transport, 15–23. Wiesbaden : Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-37103-6_2.
Texte intégralRésumé :
AbstractThe following chapter establishes the conceptual background for this thesis. First, the construct acceptance will be defined in Subchapter 0 since this term is used ambiguously in the literature. Studying the acceptance of sustainable freight transport revealed that there are different stages of acceptance which involve a varying degree of commitment by transport users. In context of this thesis, acceptance refers to the stages of willingness to use or the actual use of sustainable freight transport strategies. Afterwards, a definition and classification of policy measures is given in Subchapter 2.2. The common sticks-carrots-sermons typology is presented, which involves three main types of measures, namely regulation (“sticks”), economic incentives (“carrots”) and information instruments (“sermons”).
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Golovach, Petr A., et George B. Mertzios. « Graph Editing to a Given Degree Sequence ». Dans Computer Science – Theory and Applications, 177–91. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-34171-2_13.
Texte intégral
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Sikorski, Krzysztof A. « Topological Degree Computation ». Dans Optimal Solution of Nonlinear Equations. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195106909.003.0008.
Texte intégralRésumé :
In this chapter we address the problem of computing topological degree of Lipschitz functions. From the knowledge of the topological degree one may ascertain whether there exists a zero of a function inside the domain, a knowledge that is practically and theoretically worthwile. Namely, Kronecker’s theorem states that if the topological degree is not zero then there exists a zero of a function inside the domain. Under more-restrictive assumptions one may also derive equivalence statements, i.e., nonzero degree is equivalent to the existence of a zero. By computing a sequence of domains with nonzero degrees and decreasing diameters one can obtain a region with arbitrarily small diameter that contains at least one zero of the function. Such methods, called generalized bisections, have been implemented and tested by several authors, as described in the annotations to this chapter. These methods have been touted as appropriate when the function is not smooth or cannot be evaluated accurately. For such functions they yield close approximations to roots in many cases for which all available other methods tested have failed (see annotations). The generalized bisection methods based on the degree computation are related to simplicial continuation methods. Their worst case complexity in general classes of functions is unbounded, as results of section 2.1.2 indicate; however, for tested functions they did converge. This suggests the need of average case analysis of such methods. There are numerous applications of the degree computation in nonlinear analysis. In addition to the existence of roots, the degree computation is used in methods for finding directions proceeding from bifurcation points in the solution of nonlinear functional differential equations as well as others as indicated in annotations. Algorithms proposed for the degree computation were tested on relatively small number of examples. The authors concluded that the degree of arbitrary continuous function could be computed. It was observed, however, that the algorithms could require an unbounded number of function evaluations. This is why in our work we restrict the functions to still relatively large class of functions satisfying the Lipschitz condition with a given constant K.
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Sangwan, Surinder, et Wilfredo Daradar Quijencio Jr. « Skill Proficiency and Managerial Role in Different Sectors From Globalised to Localised ». Dans Advances in Finance, Accounting, and Economics, 124–34. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8705-8.ch011.
Texte intégralRésumé :
Skills and information are the driving powers of financial development and social improvement of any country. They have become more significant given the increasing speed of globalization along with innovative modification. Nations related to higher as well as better degrees regarding skills change consist successfully with difficulties and option regarding globalization. The roles and duties of governments have been redefined by the winds of progress achieved by globalization. Notwithstanding, administration of globalization itself arose as a daunting assignment, given its mind-boggling interplay in different domains. The three main domains have been monetary, political, and social, with war and strategy included within the political trades. Notwithstanding various different difficulties emerging from globalization, dangers likewise changed in structure, setting, and degree.
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Pinchuk, Nataliia, et Oleksandr Terletskyi. « NANOSTRUCTURED COATINGS ZRN, OBTAINED BY VACUUM-ARC DEPOSITION METHOD ». Dans Modernization of research area : national prospects and European practices. Publishing House “Baltija Publishing”, 2022. http://dx.doi.org/10.30525/978-9934-26-221-0-1.
Texte intégralRésumé :
Nowadays increased interest is shown in ZrN coatings, which have high erosion resistance, strength in combination with a fairly high hardness. Among the various ion-plasma techniques, vacuum-arc is one of the most versa-tile processes due to the high degree of ionization of the flow of film-forming particles and good adhesion properties of coatings to the substrate. The purpose of the paper is problem of structural engineering of vacuum-arc ZrN coatings is acute in order to predictably obtain the necessary functional physical and mechanical characteristics. Methodology. The study of the structure and phase composition of research samples of ZrN coatings was carried out by methods of optical, electron microscopy, X-ray diffraction analysis. The elemental composition was determined using the X-ray fluorescence method and energy-dispersive X-ray spectroscopy (EDS). Mechanical tests of materials were performed in the mode of microindentation, in particular – active loading, using the Berkovich pyramid (installation according to ISO 14577). Results. It is established that the formation of the bitexture state with the axes [111] + [311] occurs under the action of the impulse bias potential (Ui) -800 V, even at the lowest constant bias potential (Uc) -27 V. In ZrN coatings at high values of Uc = -200 V, in the whole range of pulse potentials, is the formation of the texture with the axis [111]. The change in substructural characteristics is nonmonotonic. Growth is observed. A generalized diagram of the axial texture axis is constructed, with the help of which it is possible to choose those deposition conditions that will provide coatings with a given set of properties. Proposed the integral parameter PU = pN (Uc + τ ∙ f ∙ Ui) for the analysis of the obtained data. Practical implications. Based on the proposed physical concepts, the conditions for obtaining ion-plasma vacuum-arc coatings ZrN, which affect the structure, substructure and mechanical properties, have been developed. Value/originality. Physical mechanisms in the formation of the ZrN phase, when radiation damage occurs and at the same time the process of relaxation of structural defects, which are realized under the action of heat fluxes. Depending on the intensity and duty cycle of high-energy impact, the corresponding axial textures, internal stresses, and, as a consequence, a change in functional properties are formed.
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Solona, Olena, et Ihor Kupchuk. « DEVELOPMENT OF A FUNCTIONAL MODEL OF A VIBRATING MILL WITH ADAPTIVE CONTROL SYSTEM OF MODE PARAMETERS ». Dans Modernization of research area : national prospects and European practices. Publishing House “Baltija Publishing”, 2022. http://dx.doi.org/10.30525/978-9934-26-221-0-12.
Texte intégralRésumé :
The research was supported and funded by the Ministry of Education and Science of Ukraine under grant No. 0121U108589 «Development of a complex of energy-efficient and resource-saving equipment and promising technologies for feeding farm animals of the AIC of Ukraine». The introduction of energy-efficient machines and technologies in the system of feed preparation and animal feeding is an important prerequisite for the development of agriculture. One of the advanced types of grinding technology are vibrating mills, which provide high specific productivity at relatively low energy consumption, adjustable tone of grinding products. Vibration impact on the product significantly increases the shock-absorbing effect with the possibility of wide and separate variation of shock and abrasion factors. Significant speed of mechanical and heat and mass transfer processes, a high degree of homogeneity of the product, the ability to effectively implement fine grinding and dispersion of the product at relatively low energy consumption lead to the widespread use of vibratory grinding.The constructive scheme of the mill is developed, in which the flat vertical vibrating field provides lifting of a part of loading and by means of the transport-reloading device carries out its continuously regulated movement from one grinding chamber to another, thereby circulating-spatial movement of the environment in which grinding shock interaction of grinding bodies and material that is crushed. One of the most important rules for the construction of vibrating mills is the need to maximize the degree of their automation in order to increase productivity, improve the quality of grinding and reduce the cost of the technological process.A constructive model of a controlled vibration mill with spatial-circulating motion was also developed, which constantly changes to the resonant mode of operation at the set technologically optimal parameters (productivity) and minimum energy consumption for vibration when changing the mass of the working body in the process of separation and unloading of crushed material from the grinding chamber.The aim of the study is to establish the dependence of the parameters of the crushed mass along the grinding chambers and in places of overload on the parameters of vibration of the vibration mill of continuous motion.Development of a structural model of adaptive vibration mill with spatial-circulating loading movement which when changing the mass of the working body in the process of separation and unloading of crushed material from the grinding chamber could constantly adapt to resonant mode at given technologically optimal parameters (productivity) and minimum energy consumptionResearch methods. Theoretical and experimental research methods were used in the work. Experiment planning and regression analysis methods were used in conducting experiments and processing experimental data. Verification of the adequacy of the obtained dependences with experimental data was carried out by methods of mathematical statistics.Scientific novelty: the theory and practice of vibration mechanics were further developed, in particular, the conditions of vertical lifting of the loading part in vibrating mills with a U-shaped chamber were determined and the influence of the main factors on the lifting height was studied; for the first time the scheme of the vibrating mill with spatial-circulating loading movement is developed, in which the effect of lifting of loading is used and by means of the transport-technological device reloading in the interconnected chambers is carried out.Practical significance. The conditions and parameters of the vibration field that regulate the intensity and duration of grinding are determined. The dependence of the productivity Q of a vibrating mill on the velocity of transporting the loaded mass along the grinding chamber has been established. The structure and two-circuit principle of control of work of adaptive vibration mill with spatial-circulating movement of loading are offered.
Actes de conférences sur le sujet "Area of given degree"
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Markin, Leonid, et Lyudmila Bobrik. « Geometric Method for Estimating Shading Degree of Objects in Solar Industry ». Dans 31th International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/graphicon-2021-3027-645-655.
Texte intégralRésumé :
The paper presents a geometric model for evaluating the effective area of photovoltaic solar panels, taking into account their shading cast upon the object when it is exposed to a solar flux directed as it has been set. The relevance of such research is due to the fact that solar energy is a source of ecologically clean energy on earth, in space - it is often the only source of life support for inhabited space stations and future extraterrestrial settlements. It describes problem setting, namely physical and mathematical approaches to evaluating energy efficiency of pho- tovoltaic solar panels. To estimate energy efficiency, we have chosen a voxel geometric model which samples the normal working area. The developed voxel geometric model differs from others significantly, namely it employs 4-digit code instead of 2-digit. Such multi-digit feature allows the solving algorithm to “trace” the shade source quickly when calculating the total effective area of photovoltaic solar panels. The paper presents the software implementation of the described geometric model, the graphical shell, and the results of verification of the afore- said geometric model. The results of its testing (estimates of accuracy and performance) are given. This results showing sufficient accuracy for practice and high speed of calculations (less than 10 seconds of processor time).
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Ichihashi, Ichiro, Akira Sone, Arata Masuda et Daisuke Iba. « A Study of Elasto-Plastic Response of Single Degree of Freedom System Using Artificial Ground Motions With Given Time-Frequency Characteristics ». Dans ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25381.
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In this paper, a number of artificial earthquake ground motions compatible with time-frequency characteristics of recorded actual earthquake ground motion as well as the given target response spectrum are generated using wavelet transform. The maximum non-dimensional displacement of elasto-plastic structures excited these artificial earthquake ground motions are calculated numerically. Displacement response, velocity response and cumulative input energy are shown in the case of the ground motion which cause larger displacement response. Under the given design response spectrum, a selection manner of generated artificial earthquake ground motion which causes lager maximum displacement response of elasto-plastic structure are suggested.
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Wang, Jiegao, et Clément M. Gosselin. « Dynamic Analysis of Spatial Four-Degree-of-Freedom Parallel Manipulators ». Dans ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/dac-3759.
Texte intégralRésumé :
Abstract The dynamic analysis of spatial four-degree-of-freedom parallel manipulators is presented in this article. First, expressions for the position, velocity and acceleration of each link constituting the manipulators are obtained. Then, the principle of virtual work is used to derive the generalized input forces of the manipulators. The corresponding algorithm is implemented and numerical examples are given in order to illustrate the results. The results obtained are verified using the classical Newton-Euler approach.
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Hosek, Martin, Michael Valasek et Jairo Moura. « Three-Degree-of-Freedom Parallel Robot Arm ». Dans ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14825.
Texte intégralRésumé :
This paper presents single- and dual-end-effector configurations of a planar three-degree of freedom parallel robot arm designed for automated pick-place operations in vacuum cluster tools for semiconductor and flat-panel-display manufacturing applications. The basic single end-effector configuration of the arm consists of a pivoting base platform, two elbow platforms and a wrist platform, which are connected through two symmetric pairs of parallelogram mechanisms. The wrist platform carries an end-effector, the position and angular orientation of which can be controlled independently by three motors located at the base of the robot. The joints and links of the mechanism are arranged in a unique geometric configuration which provides a sufficient range of motion for typical vacuum cluster tools. The geometric properties of the mechanism are further optimized for a given motion path of the robot. In addition to the basic symmetric single end-effector configuration, an asymmetric costeffective version of the mechanism is derived, and two dual-end-effector alternatives for improved throughput performance are described. In contrast to prior attempts to control angular orientation of the end-effector(s) of the conventional arms employed currently in vacuum cluster tools, all of the motors that drive the arm can be located at the stationary base of the robot with no need for joint actuators carried by the arm or complicated belt arrangements running through the arm. As a result, the motors do not contribute to the mass and inertia properties of the moving parts of the arm, no power and signal wires through the arm are necessary, the reliability and maintenance aspects of operation are improved, and the level of undesirable particle generation is reduced. This is particularly beneficial for high-throughput applications in vacuum and particlesensitive environments.
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Mehta, Ankur M., et Kristofer S. J. Pister. « Flexure-Based Two Degree-of-Freedom Legs for Walking Microrobots ». Dans ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15291.
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This work examines the design of legs for a walking microrobot. The parameterized force-displacement relationships of planar serpentine flexure-based two degree-of-freedom legs are analyzed. An analytical model based on Euler-Bernoulli beam theory is developed to explore the design space, and is subsequently refined to include contact between adjacent beams. This is used to determine a successful leg geometry given dimensional constraints and actuator limitations. Standard comb drive actuators that output 100 μN of force over a 15 μm bi-directional throw are shown able to drive a walking gait with three legs on a 1 cm2 silicon die microrobot. If the comb drive suspensions cannot withstand the generated reaction moments, an alternate pivot-based leg linkage is proposed.
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Collard, Jean-Francois, et Cle´ment Gosselin. « Optimal Synthesis of a Planar Reactionless Three-Degree-of-Freedom Parallel Mechanism ». Dans ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28861.
Texte intégralRésumé :
A reactionless mechanism is one in which no reaction forces nor moments are transmitted to the base for any arbitrary motion. This interesting property often requires to increase the total mass and the moments of inertia, leading to reduced dynamical performances. Therefore, this paper presents an optimization approach to synthesize and improve the dynamical performance of a reactionless three-degree-of-freedom planar mechanism. The three legs of this original mechanism are composed of reactionless four-bar mechanisms dynamically balanced with only one counter-rotation at the base. The optimization variables are the geometric and inertial parameters, while the goal is to minimize the global moment of inertia of each leg. This will reduce the power consumption of the three actuators and increase the agility. To meet physical and realistic requirements, the optimization problem is also constrained with bounds on the parameters, with the reachability of a given workspace and with a given range on a kinematic sensitivity index. Since different initial guesses of the optimization lead to similar objective results, it is proposed to search for several local solutions (morphologies) in the design space. The final choice among these solutions is made using additional design criteria based on the sensitivity in terms of dynamic balancing and power consumption with respect to the design parameters.
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Baker, Antoin, et Carl D. Crane. « Analysis of Three Degree of Freedom 6×6 Tensegrity Platform ». Dans ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99041.
Texte intégralRésumé :
The mechanism studied in this paper is a three degree of freedom 6×6 tensegrity structure. A tensegrity structure is one that balances internal (pre-stressed) forces of tension and compression. These structures have the unique property of stabilizing themselves if subjected to certain types of disturbances. The structure analyzed in this paper consists of two rigid bodies (platforms) connected by a total of six members. Three of the members are noncompliant constant-length struts and the other three members consist of springs. For typical parallel mechanisms, if the bottom platform is connected to the ground and the top platform is connected to the base by six compliant leg connectors, the top platform will have six degrees of freedom relative to the bottom platform. However, because three of the six members connecting the two platforms are noncompliant constant-length struts, the top platform has only three degrees of freedom. The primary contribution of this paper is the analysis of the three degree of freedom tensegrity platform. Specifically, given the location of the connector points on the base and top platforms, the lengths of the three noncompliant constant-length struts, and the desired location of a point embedded in the top platform measured with respect to a coordinate system attached to the base, all possible orientations of the top platform are determined.
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Wu, Yangnian, et Cle´ment M. Gosselin. « Dynamic Balancing of Multi-Degree-of-Freedom Parallel Mechanisms With Multiple Legs ». Dans ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57494.
Texte intégralRésumé :
This paper systematically presents an effective algorithm for the dynamic balancing of multi-degree-of-freedom parallel mechanisms with multiple legs and the dynamic equivalence between point masses and arbitrary moving platforms. The mass and inertia of the moving platform are replaced by point masses located at the points of attachment of the legs to the platform and the mechanisms are balanced by considering each of the legs independently. The validity and feasibility of this algorithm is first verified both theoretically and using numerical simulations in ADAMS. Two, three and four point masses are respectively discussed for different cases. Finally, some reactionless planar and spatial multi-degree-of-freedom parallel mechanisms synthesized based on this algorithm are given.
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Абакаров, А. Д., И. Б. Курбанов et Р. Г. Гасанов. « TO CALCULATION OF THE OPTIMAL DEGREE OF DAMAGE TO A BUILDING BY SEISMIC IMPACT ». Dans «АКТУАЛЬНЫЕ ВОПРОСЫ СОВРЕМЕННОЙ НАУКИ : ТЕОРИЯ, ТЕХНОЛОГИЯ, МЕТОДОЛОГИЯ И ПРАКТИКА». Международная научно-практическая онлайн-конференция, приуроченная к 60-ти летию член-корреспондента Академии наук ЧР, доктора технических наук, профессора Сайд-Альви Юсуповича Муртазаева. Crossref, 2021. http://dx.doi.org/10.34708/gstou.conf..2021.14.59.029.
Texte intégralRésumé :
Дана постановка задачи по расчету оптимальной степени поврждения здания при сейсмическом воздействии. Условие оптимизационного расчета записано в виде вероятностно-экономической целевой функции, где начальные затраты на антисейсмическое усиление здания уравновешиваются с вероятностыми потерями, связанными с наступлением той или иной степени повреждения здания. Вероятность безотказности здания, соответствующая данному уравновешенному состоянию, названа оптимальной надежностью, а степень повреждения - оптимальной степенью повреждения. Всего в соответствии со шкалой MSK-64 рассмотрены 5 степеней повреждения. Последовательности переходов из одних состояний повреждения в другие представлены в виде простейшего Марковского потока с непрерывным временем и дискретными состояниями. Составлены дифференциальные уравнения процесса переходов и представлены их общие решения. В случае если последствия наступленияопределенной степени повреждения здания носят как экономический, так и неэкономическией характер, предложено, исходя из зависимости расчета экономических потерь и затрат от повышения надежности до высоких уровней и показателя нормативного уровня надежности здания, определенного по предлагаемому в литературе выражению, принять решения о допустимой степени повреждения здания. The problem statement is given for calculating the optimal degree of damage to a building under seismic impact. The condition of the optimization calculation is written in the form of a probabilistic-economic objective function, where the initial costs for antiseismic strengthening of the building are balanced with the probabilistic losses associated with the onset of one or another degree of damage to the building. The probability of a building's reliability, corresponding to a given balanced state, is called the optimal reliability, and the degree of damage is called the optimal degree of damage. In total, in accordance with the MSK-64 scale, 5 degrees of damage are considered. Sequences of transitions from one damage state to another are presented in the form of the simplest Markov flow with continuous time and discrete states. Differential equations of the transition process are compiled and their general solutions are presented. If the consequences of the onset of a certain degree of damage to the building are both economic and non-economic in nature, it is proposed, based on the dependence of the calculation of economic losses and costs from increasing reliability to high levels and the indicator of the standard level of building reliability, determined according to the expression proposed in the literature, to make decisions on permissible degree of damage to the building.
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Liu, Shuai, Wanyou Li, Xuan Huang, Furui Xiong, Xiaozhou Jiang et Liwei Deng. « Analysis of Contribution Degree of Vibration Transmission of Bolted Structure ». Dans 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92499.
Texte intégralRésumé :
Abstract In practical engineering, the vibration transmission between bolted structures supported by cantilever beams involves many factors, including the friction between plates and the bolt connection relationship. The vibration transmission effect is the embodiment of the coupling of various factors, so it is impossible to accurately and quantitatively evaluate the influence degree of various factors. In this paper, the influence factors of vibration between bolted plates in the form of cantilever beam are studied by numerical calculation method. The effects of friction coefficient, bolt preload, temperature and internal and external pressure on vibration characteristics are studied. Finally, the contribution of different influencing factors to vibration transmission is given. The preliminary research shows that the bolt connects the two plates into a whole structure, and its stiffness changes little with the friction coefficient, bolt preload, temperature and internal and external pressure. The natural frequency of each order increases with the increase of friction coefficient, bolt preload and internal and external pressure, decreases with the increase of temperature, and the overall trend changes little. At the same time, the bolt preload is verified by test, the difference of natural frequency under the same preload is compared and analyzed, the numerical calculation is compared with the test value, and the vibration contribution of preload is verified.
Rapports d'organisations sur le sujet "Area of given degree"
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Valko, Nataliia V., Nataliya O. Kushnir et Viacheslav V. Osadchyi. Cloud technologies for STEM education. [б. в.], juillet 2020. http://dx.doi.org/10.31812/123456789/3882.
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Cloud technologies being used in STEM education for providing robotics studying are highlighted in this article. Developing cloud robotic systems have not been used to their fullest degree in education but are applied by limited specialists’ number. Advantages given by cloud robotics (an access to big data, open systems, open environments development) lead to work with mentioned systems interfaces improving and having them more accessible. The potential represented by these technologies make them worth being shown to the majority of teachers. Benefits of cloud technologies for robotics and automatization systems are defined. An integrated approach to knowledge assimilation is STEM education basis. The demanded stages for robotics system development are shown and cloud sources which could be possibly used are analyzed in this article.
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Kriegel, Francesco. Learning description logic axioms from discrete probability distributions over description graphs (Extended Version). Technische Universität Dresden, 2018. http://dx.doi.org/10.25368/2022.247.
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Description logics in their standard setting only allow for representing and reasoning with crisp knowledge without any degree of uncertainty. Of course, this is a serious shortcoming for use cases where it is impossible to perfectly determine the truth of a statement. For resolving this expressivity restriction, probabilistic variants of description logics have been introduced. Their model-theoretic semantics is built upon so-called probabilistic interpretations, that is, families of directed graphs the vertices and edges of which are labeled and for which there exists a probability measure on this graph family. Results of scientific experiments, e.g., in medicine, psychology, or biology, that are repeated several times can induce probabilistic interpretations in a natural way. In this document, we shall develop a suitable axiomatization technique for deducing terminological knowledge from the assertional data given in such probabilistic interpretations. More specifically, we consider a probabilistic variant of the description logic EL⊥, and provide a method for constructing a set of rules, so-called concept inclusions, from probabilistic interpretations in a sound and complete manner.
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Avis, William. Ukraine Crisis and Climate and Environment Commitments. Institute of Development Studies, mars 2022. http://dx.doi.org/10.19088/k4d.2022.047.
Texte intégralRésumé :
This rapid literature review collates available literature on the impact of the Ukraine crisis on international climate and environment commitments and considerations. The review draws on a range of sources predominantly blogs, opinion pieces and snap analyses. Given the nature of the conflict, its myriad impacts and uncertain end point, this report should be reviewed with a degree of caution. As the analysis draws heavily on opinion pieces and snap analyses, these will likely be outdated relatively quickly, and some assumptions shown to be flawed. Similarly, as events evolve, some analysis will become redundant. The impact of Russia’s invasion of Ukraine on international climate and environment commitments and considerations will be complex and multifaceted and likely to evolve over time, key themes emerging in this report are as follows: Strategic cooperation or competition of states towards climate-related goals has long been anticipated to drive global political developments in the coming century. The nature of these volatile relationships has a determining factor on the scale, speed and final form of the transition to net zero, impacting politically, environmentally and economically. Climate change is not an isolated area of strategic concern; rather it should be understood as a pervasive condition with implications for most other areas of interstate competition and cooperation, from global trade to regulatory standards. In this sense, actors have climate-related incentives and imperatives to either cooperate or compete according to specific issue areas such as the economy or national security.
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Tsidylo, Ivan M., Serhiy O. Semerikov, Tetiana I. Gargula, Hanna V. Solonetska, Yaroslav P. Zamora et Andrey V. Pikilnyak. Simulation of intellectual system for evaluation of multilevel test tasks on the basis of fuzzy logic. CEUR Workshop Proceedings, juin 2021. http://dx.doi.org/10.31812/123456789/4370.
Texte intégralRésumé :
The article describes the stages of modeling an intelligent system for evaluating multilevel test tasks based on fuzzy logic in the MATLAB application package, namely the Fuzzy Logic Toolbox. The analysis of existing approaches to fuzzy assessment of test methods, their advantages and disadvantages is given. The considered methods for assessing students are presented in the general case by two methods: using fuzzy sets and corresponding membership functions; fuzzy estimation method and generalized fuzzy estimation method. In the present work, the Sugeno production model is used as the closest to the natural language. This closeness allows for closer interaction with a subject area expert and build well-understood, easily interpreted inference systems. The structure of a fuzzy system, functions and mechanisms of model building are described. The system is presented in the form of a block diagram of fuzzy logical nodes and consists of four input variables, corresponding to the levels of knowledge assimilation and one initial one. The surface of the response of a fuzzy system reflects the dependence of the final grade on the level of difficulty of the task and the degree of correctness of the task. The structure and functions of the fuzzy system are indicated. The modeled in this way intelligent system for assessing multilevel test tasks based on fuzzy logic makes it possible to take into account the fuzzy characteristics of the test: the level of difficulty of the task, which can be assessed as “easy”, “average", “above average”, “difficult”; the degree of correctness of the task, which can be assessed as “correct”, “partially correct”, “rather correct”, “incorrect”; time allotted for the execution of a test task or test, which can be assessed as “short”, “medium”, “long”, “very long”; the percentage of correctly completed tasks, which can be assessed as “small”, “medium”, “large”, “very large”; the final mark for the test, which can be assessed as “poor”, “satisfactory”, “good”, “excellent”, which are included in the assessment. This approach ensures the maximum consideration of answers to questions of all levels of complexity by formulating a base of inference rules and selection of weighting coefficients when deriving the final estimate. The robustness of the system is achieved by using Gaussian membership functions. The testing of the controller on the test sample brings the functional suitability of the developed model.
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Nehring, Natalia, et Simon Dacey. Formative vs Summative Quizzes as Regular Feedback on Moodle in Computer Science Courses : Which do Students Prefer ? Unitec ePress, novembre 2021. http://dx.doi.org/10.34074/ocds.090.
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Deferred feedback on summative assessments can demotivate students and affect their overall learning performance, and it can change their study routines. The aim of this study is to compare and analyse students’ perceptions about summative and formative regular feedback: whether they are better motivated by being given marks, or by regular feedback without any marks. All participants were students from a Bachelor of Computer Science (BCS) degree at a New Zealand tertiary institute. Three courses were selected across three different levels of the BCS, and the sample group included 272 students from five different semesters. Summative (with marks) and formative (with feedback only) weekly quizzes were introduced in 2017, with the aim of providing early, regular feedback to students. Participants in the study were divided into two groups: students who were doing formative, and those who were doing summative quizzes. In each group, the majority of students indicated that they were happy and positive about getting regular feedback in the form of quizzes, and they appreciated the quiz questions and time spent as a way to adjust and enhance their learning. There was no real difference in students’ subjective evaluations and individual perceptions between those who had summative and those who had formative quizzes. The existence of quizzes, and the results, were important for students as weekly feedback and it didn’t matter whether marks were attached to these weekly feedback activities or not. More studies are needed to determine what type of questions could better influence students’ learning outcomes.
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Niles, John, et J. M. Pogodzinski. TOD and Park-and-Ride : Which is Appropriate Where ? Mineta Transportation Institute, janvier 2021. http://dx.doi.org/10.31979/mti.2021.1820.
Texte intégralRésumé :
Despite the sharp drop in transit ridership throughout the USA that began in March 2020, two different uses of land near transit stations continue to be implemented in the United States to promote ridership. Since 2010, transit agencies have given priority to multi-family residential construction referred to as transit oriented development (TOD), with an emphasis on housing affordability. In second place for urban planners but popular with suburban commuters is free or inexpensive parking near rail or bus transit centers, known as park-and-ride (PnR). Sometimes, TOD and PnR are combined in the same development. Public policy seeks to gain high community value from both of these land uses, and there is public interest in understanding the circumstances and locations where one of these two uses should be emphasized over the other. Multiple justifications for each are offered in the professional literature and reviewed in this report. Fundamental to the strategic decision making necessary to allocate public resources toward one use or the other is a determination of the degree to which each approach generates transit ridership. In the research reported here, econometric analysis of GIS data for transit stops, PnR locations, and residential density was employed to measure their influence on transit boardings for samples of transit stops at the main transit agencies in Seattle, Los Angeles, and San José. Results from all three cities indicate that adding 100 parking spaces close to a transit stop has a larger marginal impact than adding 100 housing units. Previous academic research estimating the higher ridership generation per floor area of PnR compared to multi-family TOD housing makes this show of strength for parking an expected finding. At the same time, this report reviews several common public policy justifications for TOD as a preferred land development emphasis near transit stations, such as revenue generation for the transit agency and providing a location for below-market affordable housing where occupants do not need to have a car. If increasing ridership is important for a transit agency, then parking for customers who want to drive to a station is an important option. There may also be additional benefits for park-and-ride in responding to the ongoing pandemic.
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Matsuo, Hisako. The degree of assimilation of the second and third generation of Japanese Americans in the Portland area. Portland State University Library, janvier 2000. http://dx.doi.org/10.15760/etd.6186.
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Glaspell, Garry. An assessment of an inexpensive COTS 360-degree camera for mapping and localization in a GPS-denied area. Engineer Research and Development Center (U.S.), juin 2020. http://dx.doi.org/10.21079/11681/36835.
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Fujii, Toshimasa. The degree of acculturation and success patterns in three generations of the Japanese Americans in the Portland area. Portland State University Library, janvier 2000. http://dx.doi.org/10.15760/etd.3094.
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Journeay, M., J. Z. K. Yip, C. L. Wagner, P. LeSueur et T. Hobbs. Social vulnerability to natural hazards in Canada. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330295.
Texte intégralRésumé :
While we are exposed to the physical effects of natural hazard processes, certain groups within a community often bear a disproportionate share of the negative consequences when a disaster strikes. This study addresses questions of why some places and population groups in Canada are more vulnerable to natural hazard processes than others, who is most likely to bear the greatest burden of risk within a given community or region, and what are the underlying factors that disproportionally affect the capacities of individuals and groups to withstand, cope with, and recover from the impacts and downstream consequences of a disaster. Our assessment of social vulnerability is based on principles and analytic methods established as part of the Hazards of Place model (Hewitt et al., 1971; Cutter, 1996), and a corresponding framework of indicators derived from demographic information compiled as part of the 2016 national census. Social determinants of hazard threat are evaluated in the context of backbone patterns that are associated with different types of human settlement (i.e., metropolitan, rural, and remote), and more detailed patterns of land use that reflect physical characteristics of the built environment and related functions that support the day-to-day needs of residents and businesses at the community level. Underlying factors that contribute to regional patterns of social vulnerability are evaluated through the lens of family structure and level of community connectedness (social capital); the ability of individuals and groups to take actions on their own to manage the outcomes of unexpected hazard events (autonomy); shelter conditions that will influence the relative degree of household displacement and reliance on emergency services (housing); and the economic means to sustain the requirements of day-to-day living (e.g., shelter, food, water, basic services) during periods of disruption that can affect employment and other sources of income (financial agency). Results of this study build on and contribute to ongoing research and development efforts within Natural Resources Canada (NRCan) to better understand the social and physical determinants of natural hazard risk in support of emergency management and broader dimensions of disaster resilience planning that are undertaken at a community level. Analytic methods and results described in this study are made available as part of an Open Source platform and provide a base of evidence that will be relevant to emergency planners, local authorities and supporting organizations responsible for managing the immediate physical impacts of natural hazard events in Canada, and planners responsible for the integration of disaster resilience principles into the broader context of sustainable land use and community development at the municipal level.