scholarly journals Problems of public administration in scientific-philosophical system of coordinates

2016 ◽  
Vol 3 (1) ◽  
pp. 121-130
Author(s):  
E V Okhotsky
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Point Of View ◽  
Practical Significance ◽  
Human Society ◽  
Management Activity ◽  
Democratic State ◽  
Management Area ◽  
And Performance ◽  
Philosophical Understanding

The article submitted to the attention of the reader this article is not a review in the classic sense of the genre of scientific analysis. This is most likely the reaction of an interested reader to a recently published monograph devoted to the problems of philosophical understanding of governance, more precisely the study of the managerial processes in three-dimensional space of philosophical understanding of management foundations, ideological justification and scientific support for management processes. The reviewer, in solidarity with the author of a monograph, trying their arguments, not only once again confirm the tremendous scientific and practical significance of control in the life of human society, but also with the more General scientific and philosophical positions to explore socio-energy power and basic qualitative characteristics of the mechanism of state administration, to focus attention on the development prospects and conditions of its effectiveness. With critically constructive approach deals with the problems of objective and subjective in the management of, the respective causal relationships, correlation and interdependence of the entities, forms, contents and peculiarities of the laws of dialectics in the management area. The subject of special attention is the ratio of conscious and natural, subjective and objective, goals and interests, forecasting, goal setting, and performance, sociality, legality and morality in management. Paid attention to the danger of various kinds of questionable philosophical interpretations of modern existence, non-dismissive is irresponsible attitude to the historical facts concerning the difficult, often tragic history of political and state-administrative relations in domestic and foreign practice. In conclusion made conclusions and generalizations formulated important, from the point of view of the author of the article, suggestions for improving the practice of management activity of the modern democratic state and its hardware structures.

scholarly journals Three-dimensional personnel safety positioning based on improved UKF under complex coal mine environment

2021 ◽  
Vol 303 ◽  
pp. 01054
Author(s):  
Hongxiang Xu ◽  
Xingzhen Bai ◽  
Lujie Zhou ◽  
Peng Liu
Keyword(s):  
Multiplicative Noise ◽  
Additive Noise ◽  
Coal Mines ◽  
Cluster Head ◽  
Three Dimensional ◽  
Practical Significance ◽  
Mine Environment ◽  
Personnel Safety ◽  
And Performance ◽  
Positioning Algorithm

Aiming at the problems of strong interference and poor positioning accuracy in coal mines, this paper proposes a positioning algorithm for accurate detection of personnel safety. It is of great practical significance to detect the safety movement track of underground personnel. In this paper, WSNs distributed in coal mines are divided into several clusters by clustering method. Each cluster has a certain number of sensors, which can communicate with each other to keep the estimation consistency, and send the collected data to the cluster head (CH) node. System noise includes additive noise and multiplicative noise. In order to improve the accuracy of estimation, an improved UKF algorithm is proposed. The simulation results show that the improved UKF algorithm improves the accuracy and performance of estimation, and allows better location of the underground personnel.

scholarly journals Platonic solids generate their four-dimensional analogues

2013 ◽  
Vol 69 (6) ◽  
pp. 592-602 ◽  
Author(s):  
Pierre-Philippe Dechant
Keyword(s):  
Coxeter Groups ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Root Systems ◽  
Point Of View ◽  
Platonic Solids ◽  
Four Dimensions ◽  
Potential Applications ◽  
Regular Convex ◽  
Quasi Crystals

This paper shows how regular convex 4-polytopes – the analogues of the Platonic solids in four dimensions – can be constructed from three-dimensional considerations concerning the Platonic solids alone.Viathe Cartan–Dieudonné theorem, the reflective symmetries of the Platonic solids generate rotations. In a Clifford algebra framework, the space of spinors generating such three-dimensional rotations has a natural four-dimensional Euclidean structure. The spinors arising from the Platonic solids can thus in turn be interpreted as vertices in four-dimensional space, giving a simple construction of the four-dimensional polytopes 16-cell, 24-cell, theF4root system and the 600-cell. In particular, these polytopes have `mysterious' symmetries, that are almost trivial when seen from the three-dimensional spinorial point of view. In fact, all these induced polytopes are also known to be root systems and thus generate rank-4 Coxeter groups, which can be shown to be a general property of the spinor construction. These considerations thus also apply to other root systems such as A_{1}\oplus I_{2}(n) which induces I_{2}(n)\oplus I_{2}(n), explaining the existence of the grand antiprism and the snub 24-cell, as well as their symmetries. These results are discussed in the wider mathematical context of Arnold's trinities and the McKay correspondence. These results are thus a novel link between the geometries of three and four dimensions, with interesting potential applications on both sides of the correspondence, to real three-dimensional systems with polyhedral symmetries such as (quasi)crystals and viruses, as well as four-dimensional geometries arising for instance in Grand Unified Theories and string and M-theory.

Locus of the Axis of Vibration for a Vibrating System With Variable Location of a Mass Center

2000 ◽  
Author(s):  
Byung Ju Dan ◽  
Yong Je Choi
Keyword(s):  
Vibration Analysis ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Analytical Form ◽  
Point Of View ◽  
Information Storage ◽  
Mode Shapes ◽  
Storage Device ◽  
Geometrical Approach ◽  
Mass Center

Abstract A typical approach to a linear vibration analysis of an elastically supported single rigid body is to rearrange a dynamic model into a corresponding eigenvalue problem. From the geometrical point of view, the eigenvectors in the planar vibration analysis can be interpreted as pure rotations about the vibration center or pure translations. In a three dimensional space, they represent repetitive twisting motions about the axes of vibrations. By taking a geometrical approach to the vibration analysis, the vibration mode shapes may be better understood. In this paper, the influence of variable location of a mass center on the locations of the axes of vibrations and the natural frequencies are investigated by means of the locus of the axis of vibration expressed in analytical form, which represents the geometrical locus of the eigenvector. A numerical example is used to clearly illustrate the vibration phenomena of an optical pick-up used in an information storage device.

scholarly journals Ideals of Herzog–Northcott type

2011 ◽  
Vol 54 (1) ◽  
pp. 161-186 ◽  
Author(s):  
Liam O'Carroll ◽  
Francesc Planas-Vilanova
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Regular Sequence ◽  
Point Of View ◽  
Prime Ideals ◽  
Monomial Curves ◽  
Definition Of ◽  
Minimal Prime ◽  
Special Case ◽  
Three Dimensional Space

AbstractThis paper takes a new look at ideals generated by 2×2 minors of 2×3 matrices whose entries are powers of three elements not necessarily forming a regular sequence. A special case of this is the ideals determining monomial curves in three-dimensional space, which were studied by Herzog. In the broader context studied here, these ideals are identified as Northcott ideals in the sense of Vasconcelos, and so their liaison properties are displayed. It is shown that they are set-theoretically complete intersections, revisiting the work of Bresinsky and of Valla. Even when the three elements are taken to be variables in a polynomial ring in three variables over a field, this point of view gives a larger class of ideals than just the defining ideals of monomial curves. We then characterize when the ideals in this larger class are prime, we show that they are usually radical and, using the theory of multiplicities, we give upper bounds on the number of their minimal prime ideals, one of these primes being a uniquely determined prime ideal of definition of a monomial curve. Finally, we provide examples of characteristic-dependent minimal prime and primary structures for these ideals.

USE OF B-SPLINES IN DEVELOPMENT OF AUTOMATED GEOLOGICAL-SURVEYING SUPPORTSYSTEM

2019 ◽  
pp. 48-54
Author(s):  
A. Zelensky
Keyword(s):  
Dimensional Space ◽  
Body Contouring ◽  
Three Dimensional ◽  
Ore Deposits ◽  
Open Pit ◽  
Practical Significance ◽  
Control Points ◽  
Real Representation ◽  
B Splines ◽  
Processing Plants

Purpose. The effectiveness of the development of an information system for quarry management is primarily determined by the level of geological and surveying support (GSS), which includes solving such basic tasks as calculating reserves (operational and complete), accounting for ore mining, building the information base for mining planning and management, and field modeling, and career, ore body contouring, etc. The purpose of this work is to develop and use B-Splines in the automation of geological surveying software in the quarry. Research methods. The basis of many tasks is the construction of surfaces. For the first time in recent years, an uneven rational Bspline (NURBS) is used to describe them, which most fully satisfies the following criteria: the model's adequacy to the real representation, the efficiency of model formation and surface construction, and the visualization of the model in three-dimensional space. Scientific novelty. The advantages of constructing surfaces using NURBS are as follows: ease of calculation; sufficient smoothness; construction of the surface of any degree of complexity; using the weights of the control points, control of the surface (it can pass strictly through the specified control points). The latter property made it possible with the help of a NURBS surface to effectively model the day surface of a quarry with a strict passage of the surface through points of the ledges. Practical significance. For the joint Russian-Mongolian enterprise Erdenet (Mongolia), developing the copper-molybdenum deposit, an integrated automated GSS system has been developed and has been in operation for many years. Software and algorithmic tasks of the system are constantly being improved. This article presents its latest developments and development paths. The use of NURBS allowed us to construct the day surface of the open-pit mine, to improve the complete calculation of reserves, the accounting of ore mining, and the delineation of ore bodies along the open-pit horizons. Results. The software is implemented in C++ and C# for Windows. To build three-dimensional graphics, the tools of the open graphic library OpenGL are used. Separate modules of the developed GSS system were used at the Novokrivoyorogsk and Ingulets mining and processing plants. The methodology for constructing automated GSSs has been approved by many years of positive experience in industrial implementation and can be used for non-ferrous ore and iron ore deposits.

Investigation on the traveling wave and three-dimensional trajectory of motion on the stator of rotational ultrasonic motors

2020 ◽  
Vol 64 (1-4) ◽  
pp. 631-638
Author(s):  
Hucheng Chen ◽  
Wei Han ◽  
Jinhao Qiu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Traveling Wave ◽  
Dimensional Space ◽  
Computational Cost ◽  
Three Dimensional ◽  
Element Model ◽  
Input Voltage ◽  
Ultrasonic Motors ◽  
And Performance

Better understanding of the characteristics of the traveling wave and three-dimensional trajectory related to motion on the surface of the stator is very important for the design and performance improvement of the ultrasonic motors. In this paper, an accurate finite element model of a single stator with a fully coupled piezoelectric layer was established at a moderate computational cost. The finite element model was verified by experimental test at the inverse resonance point. Based on this model, the traveling wave and three-dimensional trajectory of stator surface, including the influence of the input voltage on the phase and amplitude of the displacements in three directions, are investigated. The results show that the trajectory of particles on the stator surface is an ellipse in three-dimensional space due to the phase differences between the three components of displacement in the radial, circumferential and axial directions. The amplitude of radial displacement is about 39.5% of that in the circumferential displacement, which should not be neglected.

Optimal design, control and implementation of multi-drones for commercial utility

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
V. Indragandhi ◽  
A. Chitra ◽  
R. Raja Singh ◽  
Aishvardhan Bajiya ◽  
Yash Tilak ◽  
...  
Keyword(s):  
Point Of View ◽  
Human Society ◽  
Major Focus ◽  
Content Type ◽  
Technological Concepts ◽  
Timely Response ◽  
Mathematical Equations ◽  
The Government ◽  
And Performance ◽  
The Cost

PurposeThis proposed drone is used for surveillance purpose like medical, agriculture and military in the commercial point of view with less cost and size.Design/methodology/approachDuring emergency calls out the technology enabled modes to have quick and timely response for the mankind. As human society continues to spend months together locked inside their homes, it leads to the entire change in the human lifestyle. This also demands the society and the government to get adopt with the technological concepts such as drones to handle this pandemic scenario in a more scientific and safe mode. The major constraints in the utility segment is the cost and performance factor of the drones. This paper aims to design a drone flight management system, which can be used to operate single or multiple drone systems in a wireless mode. The major focus of this work is to minimize the cost of drone flying systems so that it can be accessible to a more massive crowd. The technological design behind the drone has been discussed in detail with mathematical equations. Also the control aspect has been presented in this work. For comparative analysis three drone have been designed and their performance have been compared.FindingsThe multi drone is designed , modelling is done and implemented in simulation and hardware. Its having less weight and cost compared to existing drone models.Originality/value75% original, 25% of the basic clarifications are taken from existing works.

scholarly journals Routing Schemes in FANETs: A Survey

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 38 ◽  
Author(s):  
Muhammad Fahad Khan ◽  
Kok-Lim Alvin Yau ◽  
Rafidah Md Noor ◽  
Muhammad Ali Imran
Keyword(s):  
Ad Hoc ◽  
Dimensional Space ◽  
Research Work ◽  
Three Dimensional ◽  
High Energy ◽  
Base Station ◽  
Routing Schemes ◽  
Radio Access ◽  
Comprehensive Survey ◽  
And Performance

Flying ad hoc network (FANET) is a self-organizing wireless network that enables inexpensive, flexible, and easy-to-deploy flying nodes, such as unmanned aerial vehicles (UAVs), to communicate among themselves in the absence of fixed network infrastructure. FANET is one of the emerging networks that has an extensive range of next-generation applications. Hence, FANET plays a significant role in achieving application-based goals. Routing enables the flying nodes to collaborate and coordinate among themselves and to establish routes to radio access infrastructure, particularly FANET base station (BS). With a longer route lifetime, the effects of link disconnections and network partitions reduce. Routing must cater to two main characteristics of FANETs that reduce the route lifetime. Firstly, the collaboration nature requires the flying nodes to exchange messages and to coordinate among themselves, causing high energy consumption. Secondly, the mobility pattern of the flying nodes is highly dynamic in a three-dimensional space and they may be spaced far apart, causing link disconnection. In this paper, we present a comprehensive survey of the limited research work of routing schemes in FANETs. Different aspects, including objectives, challenges, routing metrics, characteristics, and performance measures, are covered. Furthermore, we present open issues.

scholarly journals Perceptually Valid Facial Expressions for Character-Based Applications

2009 ◽  
Vol 2009 ◽  
pp. 1-13 ◽  
Author(s):  
Ali Arya ◽  
Steve DiPaola ◽  
Avi Parush
Keyword(s):  
Facial Expression ◽  
Language Learning ◽  
Facial Expressions ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Point Of View ◽  
Mixed Emotions ◽  
Dynamic Facial Expressions ◽  
Emotion Model ◽  
Three Dimensional Space

This paper addresses the problem of creating facial expression of mixed emotions in a perceptually valid way. The research has been done in the context of a “game-like” health and education applications aimed at studying social competency and facial expression awareness in autistic children as well as native language learning, but the results can be applied to many other applications such as games with need for dynamic facial expressions or tools for automating the creation of facial animations. Most existing methods for creating facial expressions of mixed emotions use operations like averaging to create the combined effect of two universal emotions. Such methods may be mathematically justifiable but are not necessarily valid from a perceptual point of view. The research reported here starts by user experiments aiming at understanding how people combine facial actions to express mixed emotions, and how the viewers perceive a set of facial actions in terms of underlying emotions. Using the results of these experiments and a three-dimensional emotion model, we associate facial actions to dimensions and regions in the emotion space, and create a facial expression based on the location of the mixed emotion in the three-dimensional space. We call these regionalized facial actions “facial expression units.”

scholarly journals THE SANSEVERO CHAPEL, A THREE-DIMENSIONAL POINT OF VIEW

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 299-304
Author(s):  
V. Cera ◽  
D. Marcos González ◽  
L. A. Garcia
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Point Of View ◽  
Two Dimensional ◽  
Dimensional Representation ◽  
Survey Techniques ◽  
Representation Systems ◽  
Representation Of Space ◽  
Special Relevance ◽  
Three Dimensional Space

<p><strong>Abstract.</strong> In this article, the importance of the three-dimensional survey in architectural spaces will be studied, taking special relevance in the study of the perception of perspective, since three-dimensional space would not be understood from a two-dimensional representation of space. The project aims to develop a comparison between the representation systems based on the automatic acquisition of various data by different 3D survey techniques. In particular, the document reports the results of an analysis based on the Sansevero Chapel in Naples.</p>

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