scholarly journals Reconstruction of the Image Metric of Periodic Structures in an Opto-Digital Angle Measurement System

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4411
Author(s):  
Alexander N. Korolev ◽  
Alexander Ya. Lukin ◽  
Yurii V. Filatov ◽  
Vladimir Yu. Venediktov

Measurement of the object angular position and its change is one of the important tasks in measurement technique. Our method is based on determination of the angular position of a 2D periodical optical pattern (2D mark) at the object, captured by the sensor of a digital camera. System performance can be frustrated by errors in determination of the spot coordinates on the camera sensor; by the presence of lens aberrations; by deviations from the parallelism of the pattern planes and the camera sensor; and by differences between the actual spots positions and the ideal grid. In the paper we discuss the effect of these errors and the way to correct or eliminate them. We have developed the mathematical routine and the corresponding numerical codes for correction of the said errors. The code and the routine we checked in a real experiment. It has shown that the correction decreases the standard deviation in 15 times.

Author(s):  
David M Hudson

Abstract Freshwater crustaceans are distributed throughout the montane and lowland areas of Colombia, and are therefore a useful indicator group for how aquatic species will respond to climate change. As such, metabolic determination of physiological performance was evaluated for the Colombian pseudothelphusid crab, Neostrengeria macropa (H. Milne Edwards, 1853), over a temperature range inclusive of current temperatures and those predicted by future scenarios in the plateau around the city of Bogotá, namely from 8 °C to 30 °C. The performance results mostly aligned with previous exploratory behavioral determination of the ideal temperature range in the same species, although the metabolism increased at the highest temperature treatments, a point when exploratory behavior declined. These results indicate that this species of montane crab behaviorally compensates for increased thermal stress by decreasing its physical activity, which could have negative predator-prey consequences with changes to community structure as different species undergo climate-mediated geographic range shifts in the region. As this species is endemic to the plateau surrounding Bogotá, it also experiences a number of other stressors to its survival, including infrastructure development and invasive species.


2006 ◽  
Vol 62 (6) ◽  
pp. 1025-1030 ◽  
Author(s):  
Razvan Caracas ◽  
Renata M. Wentzcovitch

Density functional theory is used to determine the possible crystal structure of the CaSiO3 perovskites and their evolution under pressure. The ideal cubic perovskite is considered as a starting point for studying several possible lower-symmetry distorted structures. The theoretical lattice parameters and the atomic coordinates for all the structures are determined, and the results are discussed with respect to experimental data.


2016 ◽  
Vol 56 (12) ◽  
pp. 2060 ◽  
Author(s):  
Serkan Ozkaya ◽  
Wojciech Neja ◽  
Sylwia Krezel-Czopek ◽  
Adam Oler

The objective of this study was to predict bodyweight and estimate body measurements of Limousin cattle using digital image analysis (DIA). Body measurements including body length, wither height, chest depth, and hip height of cattle were determined both manually (by measurements stick) and by using DIA. Body area was determined by using DIA. The images of Limousin cattle were taken while cattle were standing in a squeeze chute by a digital camera and analysed by image analysis software to obtain body measurements of each animal. While comparing the actual and predicted body measurements, the accuracy was determined as 98% for wither height, 97% for hip height, 94% for chest depth and 90.6% for body length. Regression analysis between body area and bodyweight yielded an equation with R2 of 61.5%. The regression equation, which included all body traits, resulted in an R2 value of 88.7%. The results indicated that DIA can be used for accurate prediction of body measurements and bodyweight of Limousin cattle.


IEEE Micro ◽  
1998 ◽  
Vol 18 (3) ◽  
pp. 8-15 ◽  
Author(s):  
E.R. Fossum

2020 ◽  
pp. 38-42
Author(s):  
Galina Veniaminovna Sorokoumova ◽  
Anastasiia Olegovna Bespalova

The article deals with the concept of pedagogical culture of parents, the goals of development of pedagogical culture of parents and methods of formation and improvement of the level of pedagogical culture of parents. The paper focuses on the tasks of interaction between an educational institution and the family in the upbringing of children. Methods of study. To study the possibility of forming a pedagogical culture of parents, we used a questionnaire to survey the needs of parents to interact with the educational institution and the interest of teachers in working with the family, the «Ideas about the ideal parent» method by R. V. Ovcharova, Y.A. Degtyareva, «Family Biofield» inquirer by V. V. Boyko and «Determination of parenting skills» questionnaire by O.L. Zvereva. Results of the study. The article shows the results of the impact of the program, which includes a seminar using the case technology «pedagogical culture of parents» and parent training based on the program «education based on common sense» on the formation of the pedagogical culture of parents. Conclusion. The results of the study proved the possibility of purposeful formation of the pedagogical culture of parents in the educational system of the school and the high efficiency of practice – and personality-oriented methods of such work, and also showed greater competence and awareness among parents and kindergarten teachers in the education of children.


QOF ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 161-174
Author(s):  
Cholid Ma'arif

Abstrak This paper will explore aspects of research methodology of exegesis written by Aksin Wijaya related to methods nuzuli ala Muhammad Izzat Darwazah. For that, the focus of this discussion is the methodology of his research in his own book of under title Sejarah Kenabian Dalam Perspektif Tafsir Nuzuli Muhammad Izzat Darwazah, finding out how people review mufassir. Specifically, the methodical determination of the previous his experienced has moved soon of orientation from the critical to the descriptive while facing of four books, namely: Tafsir al Hadith, 'Ashr al Nabiy wa Biatuhu Qabla al Bi'tsah, Sirah al Rasul; Suwar Muqtabasah min al Qur'an, and ad Dustur al Qur'an fi Su'uni al Hayat works of thinkers and historians. From his reading, he at least analyzes his views into two important parts, namely; 1) the interpretation method of nuzuli and the ideal concept it contains, 2) it then draws it into the realm of pre-Islamic, personal and family life of the prophet Muhammad, to the condition of the people of prophetic era through the perspective of nuzuli Izzat Darwazah exegesis. According to the reviewer, there are other research elements in writing the work of the exegesis, namely some models of research methods of interpretation at once, such as: comparative research, character research, and thematic-nuzuli research. Whereas although placed more as an overview of nuzuli interpretation, at least he invites readers, especially in Indonesia to re-read the tafsir nuzuli treasury and see which is as worthy to be developed in the turats of Islam Nusantara. Abstrak Tulisan ini hendak menelusuri aspek metodologi penelitian tafsir yang dilakukan oleh Dr. Aksin Wijaya terkait metode nuzuli ala Muhammad Izzat Darwazah. Untuk itu, fokus dari pembahasan ini adalah tentang metodologi penelitiannya dalam buku berjudul Sejarah Kenabian Dalam Perspektif Tafsir Nuzuli Muhammad Izzat Darwazah untuk mengetahui bagaimana orang mengkaji mufassir. Dimana secara khusus mulai penentuan metodis dari sebelumnya ia mengalami pergeseran orientasi dari kritis ke deskriptif dalam menghadapi empat kitab hasil perburuannya, yaitu: Tafsir al Hadits, ‘Ashr al Nabiy wa Biatuhu Qabla al Bi’tsah, Sirah al Rasul; Suwar Muqtabasah min al Qur’an, dan ad Dustur al Qur’an fi Su’uni al Hayat karya tokoh pemikir dan sejarawan. Dari pembacaannya tersebut, ia setidaknya menganalisa pandangannya menjadi dua bagian penting, yaitu; 1) metode tafsir nuzuli dan konsep ideal yang dikandungnya, 2) kemudian ia menariknya ke ranah kehidupan masyarakat pra-islam, pribadi dan keluarga nabi Muhammad saw, hingga kondisi masyarakat era kenabian melalui perspektif tafsir nuzuli Izzat Darwazah. Pun demikian, menurut penulis ada unsur penelitian lain dalam penulisan karya Aksin tersebut, yaitu beberapa model metode penelitian tafsir sekaligus, seperti: penelitian perbandingan, penelitian tokoh, dan penelitian tematik-nuzuli. Dimana walaupun diletakkan lebih sebagai gambaran umum tafsir nuzuli, setidaknya ia mengajak pembaca khususnya di Indonesia untuk meneelaah kembali khazanah tafsir nuzuli dan memandang mana yang sekira layak untuk dikembangkan dalam turats Islam ke-Indonesia-an.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Na Liu

Objective. To explore the application of 3D image technology in motor and sensory nerve classification. Methods. A total of 200 sections of the 5cm-long popliteal fossa peroneal nerve from adult volunteers were cut and frozen. The slices were 10 m thick, and the interval between the slices was 0.25 mm. Acetylcholinesterase histochemical staining was used to observe the changes of nerve bundles under the microscope. The stained sections were transformed into digital images by the digital camera system, and the images were stitched to obtain a two-dimensional panoramic image 100 times magnified. The properties of the functional bundles were manually judged. Using Amira 3.1 three‐dimensional reconstruction software to realize the three-dimensional reconstruction and visualization of nerve can not only accurately perceive the complex three-dimensional surface structure of nerve, but also arbitrarily display, rotate, scale, and segment the three-dimensional structure inside nerve, and carry out three-dimensional measurement in time. It has made preliminary achievements in brachial plexus, lumbosacral plexus, neural stem functional bundle (group), and intramuscular nerve routing and distribution, including the regeneration process of sensory nerve and three-dimensional reconstruction and visualization of composite tissue containing sensory nerve. Conclusion. Based on histology and computer technology, the functional band of short peroneal nerve can be reconstructed in 3D, which provides a feasible basis for the three-dimensional reconstruction of the functional band of the long peripheral nerve.


Author(s):  
Чуйко М.М. ◽  
Завальський В.

High quality of the soldering process can be achieved with the right choice of the necessary soldering materials. Since wetting determines the further nature of the connection between the solder and the main soldering material, the contact angle  measurement  is the basis for quality control of soldering materials, provided that the basic requirements of the technological process. The determination of the contact angle value is carried out by the indirect method of the sessile drop, by measuring the basic parameters of the drop using infrared transducer. A smaller value of the contact angle corresponds to a better interaction of materials, and hence a better electrical contact


Author(s):  
Tatyana A. Ivanova ◽  

The purpose of this article is a philosophical and anthropological analysis of the ideal of androgyne in V.V. Rozanov’s metaphysics of sex. The main focus is on the comparison of the destructive and constructive forms of the androgyne in his philosophy. According to the philosopher, destructive forms include people of «moonlight» or «third sex», who are considered the founders of New Testament Christianity, denying the life of the flesh. Constructive forms are the natural androgyny of a child and the androgyny of a married couple, which reveals itself in love, dynamics, mutual complementarity of a man and a woman. The paper draws parallels between N.A. Berdyaev’s and V.V. Rozanov’s concepts of androgyne, which are antipodal in terms of direction of thought but have common meanings. It is concluded that thesimilarity between the concepts lies in the understanding of gender as a dynamic and metaphysical principle that penetrates through not only the bodily but also the spiritual life of a person, and therefore cannot be rejected. The concepts are also similar in that they draw a boundary between the androgyne and the hermaphrodite, of which the former is the ideal of the human wholeness, while the latter is an unsuccessful attempt to achieve it. The differences between these philosophers consist in the priority of spiritual love in Berdyaev’s system and worldly, bodily love in Rozanov’s, as well as in a different understanding of the process of an androgyne being generated in a person, which, in Berdyaev’s conception, is individual and arises in each of the persons who are in love with each other, while, according to Rozanov, it is exclusively achievable in couples. The paper also pays attention to Rozanov’s own theology, which renews the Old Testament family ideals, offering the concept of God as a «sexual» being and proposing to consider the act of love within marriage as a sacred mystery that unites a person with God in co-creation. The study allows us to rethink the modern problems of gender self-determination of a person, returning to the metaphysical foundations of the Russian philosophy of gender, the main task of which was the synthesis of the spiritual and bodily principles in a person.


Author(s):  
Valnyr Vasconcelos Lira ◽  
Francisco Fechine Borges ◽  
Jéssica Cordeiro da Silva Santos ◽  
Antônio Pedro Gomes Tabosa ◽  
Mário Eduardo Rangel Moreira Cavalcanti Mata

<p><span class="fontstyle0">With the evolution of cultivation techniques, the world production of fruits and vegetables has been presenting a continuous growth. Despite the increase in production, a significant portion of the harvested products is mainly lost in the post-harvest due to several factors, such as inapropriate handling, transportation and conservation, lack of selection and classification, poorly sized packaging, among others. In general, the quality of fruits and vegetables is usually evaluated by the following parameters: size, shape, mass, color, firmness, ripeness, absence of bruises and pathologies.The objective of this work was to develop an application in Matlab to detect morphological characteristics (width, length, area, perimeter) of Mangifera indica L., ‘Tommy Atkins’ mangos from images, and using the same images, estimate its weigth. The images of the mangoes were acquired with a digital camera attached to an illuminated box and later processed in an application developed in Matlab. The images showed the morphological characteristics of the samples were obtained and an equation was determined to estimate their mass. The determination of the mass from the images had a 96% correlation with the actual mass measured with a scale and it was possible to obtain a reliable estimate of the masses of the mangoes from their images.</span></p>


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