Designing a geodetic network through the search method based on the use of an undistorted model

2021 ◽  
Vol 966 (12) ◽  
pp. 2-10
Author(s):  
M.J. Bryn ◽  
G.G. Shevshenko

General idea of the search method is provided. An information flowchart explaining themethod is presented. Formulas for evaluating the project of a geodetic network using the search method based on the undistorted model are given. The sequence of the mentioned design algorithm based on the undistorted model is developed. A computer program for evaluating the project in Visual Basic was compiled. The design and evaluation of the project of two networks, a triangulation geodetic and the one built according to the free stationing scheme was made. Both networks were constructed using the search method of nonlinear programming based on the undistorted model. The results of the evaluation of the triangulation network project coincided with those performed by the classical parametric method, which confirmed the correctness of the proposed algorithm for designing a geodetic network using the search method. The full weight matrix of coordinates of the defined points was obtained, and the average square error of the position of the weakest point in the network calculated.

2020 ◽  
pp. 24-29
Author(s):  
I. I. Kravchenko

The article presents a mathematical model of the multi-pass surface treatment route. The method reduces the amount of calculations compared to the directed search method and guarantees a global extremum of the target function. According to the proposed method, an algorithm and a program in Visual Basic have been developed.


2014 ◽  
Vol 60 (No. 6) ◽  
pp. 273-278
Author(s):  
C.H Yu ◽  
J.C. Yoo ◽  
B. Yao S

The present study estimates the farmers’ willingness to switch to organic agriculture by using the one-and-one-half-bound dichotomous choice contingent valuation method. We survey 200 farmers in the Kwangsi-myeon, Yesan-gun (Chungnam, Korea) and ask them at what revenue level (based on a 40 kg bag of eco-friendly rice) they would be willing to switch from the conventional agricultural methods to organic agricultural methods. The Turnbull model, a non-parametric method, was then used to estimate the willingness to switch to organic agriculture. The presented results show that farmers would be willing to convert to organic agriculture if their revenues were increased to 107 369–109 230 KRW per bag from the reference value of 60 000 KRW.  


2012 ◽  
Vol 29 (1) ◽  
pp. 54-65 ◽  
Author(s):  
H. A. Dal ◽  
E. Sipahi ◽  
O. Özdarcan

AbstractWe present BVR observations of DK CVn from 2007 and 2008. We analysed the BVR light curves of the system and obtained the system's parameters. Using the ‘q-search’ method, we measured the mass ratio of the system (q) as 0.55. Taking the temperature of the primary component as 4040 K, the temperature of the secondary was found to be 3123 K. Several flares were detected, and the distributions of flare equivalent duration versus flare total duration were modelled using the One-Phase Exponential Association Function for these flares. The parameters of the model demonstrated that the flares are the same as those detected from UV Ceti stars. We also demonstrate that the variation at out-of-eclipse must be caused by some cool spot(s) on one of the components. The star is found to show two active longitudes in which the spots are mainly formed. Consequently, this study reveals that DK CVn should be a chromospherically active binary star.


Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 361
Author(s):  
Ngoc-Yen-Phuong Cao ◽  
Benoit Celse ◽  
Denis Guillaume ◽  
Isabelle Guibard ◽  
Joris W. Thybaut

Hydroprocessing reactions require several days to reach steady-state, leading to long experimentation times for collecting sufficient data for kinetic modeling purposes. The information contained in the transient data during the evolution toward the steady-state is, at present, not used for kinetic modeling since the stabilization behavior is not well understood. The present work aims at accelerating kinetic model construction by employing these transient data, provided that the stabilization can be adequately accounted for. A comparison between the model obtained against the steady-state data and the one after accounting for the transient information was carried out. It was demonstrated that by accounting for the stabilization, combined with an experimental design algorithm, a more robust and faster manner was obtained to identify kinetic parameters, which saves time and cost. An application was presented in hydrodenitrogenation, but the proposed methodology can be extended to any hydroprocessing reaction.


Author(s):  
Fernando G. Alberti ◽  
Federica Belfanti

PurposeThe purpose of this paper is twofold. First, it aims at reconciling the literature on creating shared value (CSV) with the one on cluster development, searching for complementarities and similarities. Second, it aims at understanding the role of cluster development in CSV. For these reasons, the authors operationalized the general idea of cluster development with the widely accepted concept of cluster initiatives, i.e. systematic efforts aimed at cluster development. The authors focused on exploring the process of launching and supporting local cluster initiatives through empirical evidence. In particular, the authors aimed at analyzing how a CSV strategy can be defined and developed when adopted within a cluster initiative.Design/methodology/approachThe research draws on a critical review of the literature focusing on CSV and on a conceptual reconciliation between the literature on the CSV ecosystem with the one on clusters, and more specifically on those initial cluster initiatives. The authors relied on an exploratory case study of an Italian cluster initiative in CSV, i.e. the Science and Innovation Food District (SIFooD) cluster promoted by Whirlpool. Thanks to the richness and great availability of information about the case, this study primarily relied on the use of secondary data.FindingsThe case of SIFooD has highlighted how Whirlpool promoted the cluster initiative within its CSV framework to achieve sustainable and collaborative innovation in food waste prevention and, conversely, how SIFooD enhanced CSV of its cluster members. To arrange its network development process, SIFooD has implemented all the elements that prior literature has considered fundamental for launching and supporting a successful cluster initiative. On the other hand, SIFooD was able to adopt a collective-impact approach, implementing the five elements needed in its ecosystem to create shared value. Moreover, thanks to all the activities comprised in the SIFooD cluster initiative, shared value was actually created.Research limitations/implicationsThe present paper has some limitations. First of all, the empirical analysis focuses only on one cluster initiative; thus, cross/comparative analyses with other cluster initiatives may illuminate the findings better. Second, the authors relied on a very recent cluster initiative in a particular field (food waste prevention) and in one specific institutional context (Italy); thus, data may suffer from temporal, industrial and geographical biases.Originality/valueLiterature on the border between CSV and clusters is still in its infancy and almost nothing is known about their relationship, despite them being intimately related since the inception of this field. The paper qualifies for a very first attempt to understand how firms promote clusters, through cluster initiatives, for the sake of CSV and how clusters may enhance CSV of firms.


Author(s):  
Michal E. Ptaszynski ◽  
Fumito Masui

In this chapter, the authors present a method for automatic detection of malicious internet contents, based on a combinatorial approach resembling brute force search algorithms, with application to language classification. The method automatically extracts sophisticated patterns from sentences and applies them in classification. The experiments performed on actual cyberbullying data showed advantage of this method to previous methods, including the one described in Chapter 4. Pros and cons of this method when compared to previous ones are also discussed in this chapter.


Author(s):  
Liudmila B. Sukina ◽  

In the East Slavic art of the 17th century images of the trees of the spiritual genealogy of Russian princes and tsars became widespread. Such compositions were present in book engraving, icon painting and fresco. Despite the general similarity, they differ in sets of images and micro-plots. The differences are due to the specific intent of each of the works. The article examines the micro-plot of the “planting” of the family tree as the most sapid and with its own variations. It’s included in the iconographic composition of five works of art from the second half of the 17th – early 18th centuries. In the paper, special attention is paid to the peculiarities of the depiction of the “gardeners” of the dynastic trees (Princess Olga, Prince Vladimir, Prince Ivan Kalita and Metropolitan Peter) and some other characters, as well as their attributes. With all the diversity of the personifications of “gardeners”, “body language” and symbols used by artists, iconographic solutions in each case worked for the one general idea. The czar dynasties of the Russian state were presented as clans founded by “right” rulers who gave their subjects state establishment and order, and also “enlightened” them with the Christian faith.


2021 ◽  
Vol 13 (1-2) ◽  
pp. 357-376
Author(s):  
Marat Gorodezky ◽  

The article considers creationism as a historically relevant principle in the scientific and philosophic aspects denoting the ontological structure of the world. Outside of the religious interpretation, the author speaks of the dialectics of creation, which is revealed as an implicative connection of the one and nothing. Logical inversion (logical turn), acting from within this implicative connection, is postulated as the principle of a fundamental negation, which, according to the author, forms the true and dramatic essence of the world as a creation. The author distances himself from the widespread discussion between evolutionism and scientific creationism, stating that it does not correspond to the very subject of creationism, understood as the implication of a real from nothing. The author focuses on considering ‘nothing’ as a purely dialectical / metaphysical principle and relies partly on the Hegel’s dialectic of ‘being’ and ‘nothing’, and partly on the neoplatonic concept of the one. Rejecting the medieval interpretation of the temporal beginning and the Hegel’s identity, he deduces a scheme of the logical connection between the one and the difference, which postulates the inversion (turnover) forming the creation - the one and the difference disjunctively change places, the one becomes the real, and the difference out of the one becomes nothing. It is argued that this postulate, in particular, refutes the thesis about the ‘fall into sin’. In the second part of the article, a spatial-phenomenological hypothesis is presented: the author provides a description of the space as a geometrical-semantic plane (projective structure). This hypothesis follows from the phenomenological problem of the duality of a geometric object, which results in the problem of ontological transition between a point and a line (in the aporia of the Eleats) and the related problem of spatial congruence / parallelism. According to the author, the potential for solving these not essentially mathematical, but metaphysical questions is the projective geometry, in which parallel lines intersect at ‘point at infinity’, and space is complemented by the ‘plane at infinity’. The essence of the solution consists, firstly, in the assumption of the single plane, which underlies the transition, and secondly, in the description of the perceived world as a result of a specific turn over and closure of this plane, forming the projective structure. The key in this part is the demonstration of the surface of a three-dimensional object as a phenomenon of perceptual-semantic unfolding, which can be imagined as an action of consciousness, consistently reducing the usual scheme. An important aspect of considering the projective structure is the correlation with ‘the Plane’ by G. Deleuze. The general idea of the article is that the dialectical scheme of creation and the projective structure of the space coincide: the logical inversion (logical turn), acting in connection of the one and nothing, and projective structural turnover – are the same things.


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