Diagnostic features identification algorithm according to vibration parameters of a compressor installation

Author(s):  
V. V. Alekseev ◽  
I. V. Kalyakin ◽  
V. S. Konovalova ◽  
P. G. Korolev ◽  
A. G. Perkova
2020 ◽  
Vol 45 (3) ◽  
pp. 537-543
Author(s):  
Karinne Sampaio Valdemarin ◽  
Jair Eustáquio Quintino Faria ◽  
Fiorella Fernanda Mazine ◽  
Vinicius Castro Souza

Abstract—A new species of Eugenia from the Atlantic forest of Brazil is described and illustrated. Eugenia flavicarpa is restricted to the Floresta de Tabuleiro (lowland forests) of Espírito Santo state and is nested in Eugenia subg. Pseudeugenia. Considering all other species of the subgenus that occur in forest vegetation types of the Atlantic forest phytogeographic domain, Eugenia flavicarpa can be distinguished mainly by the combination of smooth leaves with indumentum on both surfaces, with two marginal veins, usually ramiflorous inflorescences, pedicels 4.5‐9.7 mm long, flower buds 3.5‐4 mm in diameter, and by the calyx lobes that are 2‐3 mm long with rounded to obtuse apices. Morphological analyses were performed to explore the significance of quantitative diagnostic features between the new species and the closely related species, Eugenia farneyi. Notes on the habitat, distribution, phenology, and conservation status of Eugenia flavicarpa are provided, as well as a key for all species of Eugenia subg. Pseudeugenia from forest vegetation of the Atlantic forest phytogeographic domain.


2020 ◽  
Vol 48 (4) ◽  
pp. 287-314
Author(s):  
Yan Wang ◽  
Zhe Liu ◽  
Michael Kaliske ◽  
Yintao Wei

ABSTRACT The idea of intelligent tires is to develop a tire into an active perception component or a force sensor with an embedded microsensor, such as an accelerometer. A tire rolling kinematics model is necessary to link the acceleration measured with the tire body elastic deformation, based on which the tire forces can be identified. Although intelligent tires have attracted wide interest in recent years, a theoretical model for the rolling kinematics of acceleration fields is still lacking. Therefore, this paper focuses on an explicit formulation for the tire rolling kinematics of acceleration, thereby providing a foundation for the force identification algorithms for an accelerometer-based intelligent tire. The Lagrange–Euler method is used to describe the acceleration field and contact deformation of rolling contact structures. Then, the three-axis acceleration vectors can be expressed by coupling rigid body motion and elastic deformation. To obtain an analytical expression of the full tire deformation, a three-dimensional tire ring model is solved with the tire–road deformation as boundary conditions. After parameterizing the ring model for a radial tire, the developed method is applied and validated by comparing the calculated three-axis accelerations with those measured by the accelerometer. Based on the features of acceleration, especially the distinct peak values corresponding to the tire leading and trailing edges, an intelligent tire identification algorithm is established to predict the tire–road contact length and tire vertical load. A simulation and experiments are conducted to verify the accuracy of the estimation algorithm, the results of which demonstrate good agreement. The proposed model provides a solid theoretical foundation for an acceleration-based intelligent tire.


2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Amit Singh ◽  
Nitin Mishra ◽  
Angad Singh

 A Wireless Mobile Ad-hoc Network consists of variety of mobile nodes that temporally kind a dynamic infrastructure less network. To modify communication between nodes that don’t have direct radio contact, every node should operate as a wireless router and potential forward knowledge traffic of behalf of the opposite node. In MANET Localization is a fundamental problem. Current localization algorithm mainly focuses on checking the localizability of a network and/or how to localize as many nodes as possible. It could provide accurate position information foe kind of expanding application. Localization provide information about coverage, deployment, routing, location, services, target tracking and rescue If high mobility among the mobile nodes occurs path failure breaks. Hence the location information cannot be predicted. Here we have proposed a localization based algorithm which will help to provide information about the localized and non-localized nodes in a network. In the proposed approach DREAM protocol and AODV protocol are used to find the localizability of a node in a network. DREAM protocol is a location protocol which helps to find the location of a node in a network whereas AODV is a routing protocol it discover route as and when necessary it does not maintain route from every node to every other. To locate the mobile nodes in a n/w an node identification algorithm is used. With the help of this algorithm localized and non-localized node can be easily detected in respect of radio range. This method helps to improve the performance of a module and minimize the location error and achieves improved performance in the form of UDP packet loss, received packet and transmitted packets, throughput, routing overhead, packet delivery fraction. All the simulation done through the NS-2 module and tested the mobile ad-hoc network.


Pediatru ro ◽  
2018 ◽  
Vol 4 (52) ◽  
pp. 33
Author(s):  
Felicia Galoş ◽  
Anca Orzan ◽  
Cătălin Boboc ◽  
Mălina Anghel ◽  
Mihai Munteanu ◽  
...  

GYNECOLOGY ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 6-10
Author(s):  
Sergey A. Martynov

The aim of the review was to summarize information on clinical manifestations, diagnostic features, as well as methods for correction of scar defects after cesarean section (CS) outside pregnancy. Lack of the scar after CS, niche, isthmocele are a myometrium defect in the area of scar after CS, which is most often detected by ultrasound, sonohysterography or magnetic resonance imaging and is manifested by postmenstrual bleeding from the genital tract. In some cases, it can cause menorrhagia, dyspareunia, pelvic pain, infertility, uterine rupture during subsequent pregnancy and childbirth. Conservative therapy or surgical treatment with laparoscopy, laparotomy or vaginal approach is carried out depending on the symptoms, size of the defect, the thickness of the residual myometrium, as well as the womans reproductive plans.


2009 ◽  
pp. 37-48 ◽  
Author(s):  
N. B. Ermakov ◽  
P. V. Krestov

A revision of the higher syntaxa of meadows of the Russian Far East has been made on the basis of results of ecological, phytocoenotic and chorological analyses of associations and higher units published by M. Achty­amov (1985, 1987а, б, 1995, 2000) and G. Dymina (1980, 1985). Conceptual basis for existing syn­taxo­nomic system of the meadows and leading diagnostic features of syntaxa have been reviewed. Authors propose to include all diverse Daurian-Manchurian meadows into two different classes. Hygro-mesic meadow communities of bogged flood-plane habitats with excessive moisture supported by subterranean waters have been included in the class Cala­magros­tietea langsdorffii Mirkin in Achtyamov et al. 1985. Diagnostic species are Anemonidium dichotomum, Calamagrostis langsdorffii, Caltha membran acea, Carex appendiculata, C. schmidtii, Filipendula pal­mata, Fimbripetalum radians, Galium davuricum, Iris laevigata. Lathyrus pilosus, Lysimachia davurica, Sanguisorba parviflora, Saussurea amurensis, Spiraea salicifolia, Stachys aspera, Nomenclature type of the class is the order Calamagrostietalia langsdorffii Achtyamov et al. 1985. Drought-tolerant xero-mesic meadows of zonal sites with fluctuating moisture regime supported by monsoon climate have been included in the class Arundinello anomalae—Agros­tie­tea trinii cl. nova hoc loco. Nomenclature type of the class is the order Artemisietalia mandshuricae Achtya­mov et al. 1985. Diagnostic species are: ­Aco­nogonon divaricatum, Adenophora pereskiifolia, A. ver­ticillata, Agrostis trinii, Artemisia desertorum, A. integrifolia, A. stenophylla, Arundinella anomala, Aster tataricus, Campanula cephalotes, Carex diplasio­carpa, Dianthus chinensis, Eupatorium lindleyanum, Galium verum, Gentiana scabra, Geranium vlassowia­num, Hemero­callis minor, Iris ensata, Lathyrus quin­quener­vius, Lupinaster pentaphyllus, Patrinia sca­biosi­folia, Poten­til­la fragarioides, Ptarmica acu­mi­nata, Ranunculus japonicus, Sedum aizoon, Serratula manshurica, Tha­lictrum amurense, Trommsdorfia cilia­ta, Vicia amoena, V. pseudorobus. The ranges of both classes are concen­trated in the Manchurian floristic province of Northern Asia, in regions with obvious Pacific and Sub-Pacific climatic regimes. Their western geographical limits run near the Yablonovy mountain ridge in the Eastern part of Baikal region. Westward, the Arundinello ano­malae—Agrostietea trinii and Calamagrostietea langs­dorffii are replaced by Euro­pean-Siberian meadows of the Molinio—Arrhe­na­theretea.


2014 ◽  
Vol 48 ◽  
pp. 57-65 ◽  
Author(s):  
S. I. Genkal ◽  
M. I. Jarushina

A rare species Sellaphora hustedtii, which is also new for the flora of Russia, has been found in waterbodies of the Messoyakha River basin (south-western part of the Gydan Peninsula, Western Siberia). The scanning electron microscopy study revealed variability of the main quantitative and qualitative diagnostic features of the species (length and width of the valve, number of striae and areolae in 10 μm, shape of the valve and structure of the raphe). New data on the ecology and distribution of the species allowed us to specify its diagnosis.


2019 ◽  
Vol 28 (2) ◽  
pp. 258-266 ◽  
Author(s):  
S.K. Ryndevich ◽  
H. Hoshina ◽  
A.A. Prokin

The Cercyon shinanensis species group with two included species is erected within the nominotypical subgenus of Cercyon Leach, 1817. This group is compared with other Palaearctic species groups of Cercyon s. str. The little-known C. shinanensis Nakane, 1965 from Japan (Honshu) is redescribed and its diagnostic features are given. Cercyon sundukovi sp. nov. is described from the Russian Far East (Kunashir Island).


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