scholarly journals The technologies of application and design features of layer by layer milling machines

2018 ◽  
Vol 56 ◽  
pp. 01007
Author(s):  
Anton Cheban ◽  
Natalia Khrunina
Keyword(s):  
Layer By Layer ◽  
Design Features ◽  
Rock Destruction ◽  
Milling Machines

Significant quantity of surface miners, various designs and engineering factors are involved in open-cut mining. The article authors offer expanded classification of applied and perspective surface miners with regard to features of design of work tools, rock destruction tool, undercarriage and other elements.

scholarly journals Expert-level classification of gastritis by endoscopy using deep learning: a multicenter diagnostic trial

2021 ◽  
Vol 09 (06) ◽  
pp. E955-E964
Author(s):  
Ganggang Mu ◽  
Yijie Zhu ◽  
Zhanyue Niu ◽  
Shigang Ding ◽  
Honggang Yu ◽  
...  
Keyword(s):  
Deep Learning ◽  
Atrophic Gastritis ◽  
Intestinal Metaplasia ◽  
Layer By Layer ◽  
Test Set ◽  
White Light Endoscopy ◽  
High Risk Factors ◽  
External Test ◽  
Diagnostic Trial

Abstract Background and study aims Endoscopy plays a crucial role in diagnosis of gastritis. Endoscopists have low accuracy in diagnosing atrophic gastritis with white-light endoscopy (WLE). High-risk factors (such as atrophic gastritis [AG]) for carcinogenesis demand early detection. Deep learning (DL)-based gastritis classification with WLE rarely has been reported. We built a system for improving the accuracy of diagnosis of AG with WLE to assist with this common gastritis diagnosis and help lessen endoscopist fatigue. Methods We collected a total of 8141 endoscopic images of common gastritis, other gastritis, and non-gastritis in 4587 cases and built a DL -based system constructed with UNet + + and Resnet-50. A system was developed to sort common gastritis images layer by layer: The first layer included non-gastritis/common gastritis/other gastritis, the second layer contained AG/non-atrophic gastritis, and the third layer included atrophy/intestinal metaplasia and erosion/hemorrhage. The convolutional neural networks were tested with three separate test sets. Results Rates of accuracy for classifying non-atrophic gastritis/AG, atrophy/intestinal metaplasia, and erosion/hemorrhage were 88.78 %, 87.40 %, and 93.67 % in internal test set, 91.23 %, 85.81 %, and 92.70 % in the external test set ,and 95.00 %, 92.86 %, and 94.74 % in the video set, respectively. The hit ratio with the segmentation model was 99.29 %. The accuracy for detection of non-gastritis/common gastritis/other gastritis was 93.6 %. Conclusions The system had decent specificity and accuracy in classification of gastritis lesions. DL has great potential in WLE gastritis classification for assisting with achieving accurate diagnoses after endoscopic procedures.

scholarly journals FEATURES OF EXPERT RESEARCH ON THE EFFECTS OF LOCK PICK ON THE INNER SURFACES OF CYLINDER MECHANISMS OF LOCKS

2019 ◽  
Vol 20 (2) ◽  
pp. 292-308
Author(s):  
V. Chernov ◽  
Е. Golomisyuk ◽  
Р. Evseev
Keyword(s):  
Experimental Study ◽  
Experimental Studies ◽  
Design Features ◽  
Foreign Objects ◽  
False Conclusion ◽  
Internal Surfaces ◽  
Criminal Offenses ◽  
Trace Formation ◽  
Expert Study

The features of the expert study of traces from the effects of foreign objects on the inner surfaces of the cylinder mechanisms are considered. With the trasological examination of locks, most experts after examining the external and internal surfaces of the cylinder mechanisms of locks, unlocked by various types of keys, falsified or selected keys, ambiguously understand the mechanism of their trace formation, which can sometimes lead to a false conclusion. The purpose of the work is to present the results of the investigation of the mechanism of trace formation and localization of signs of exposure of foreign objects (lock pick, selected or fake keys) on the internal surfaces of the cylinder mechanisms of locks and recommendations to forensic experts in drawing conclusions during the course of the Trasological research. The mechanism of trace formation is considered, the characteristic and classification of traces of exposure to foreign objects are provided (lock pick, selected or fake keys). Groups of lock pick are identified, which are most often found in the Commission of criminal offenses, for their further research. A number of experimental studies have been carried out to study and analyze the mechanism of trace formation, as well as to localize the signs of influence of certain groups of lock pick on the internal surfaces of the cylinder mechanisms of the lock. The progress of the experimental studies has been described in stages. The results of the research on the opening of the cylinder mechanisms of locks are presented with various types of lock pick, depending on their design features. The illustrations explain the conditions for the location of traces on the relevant parts of the cylinder mechanisms of locks from the influence of the respective groups of lock pick. The results of an experimental study are summarized and conclusions are made on the possible conditions for the mechanism of trace formation. Recommendations to judicial experts on the formulation of conclusions in the course of trasological studies of cylinder locking mechanisms are proposed.

Clinical and anatomical classification of postinjection suppuration of the gluteal area

1986 ◽  
Vol 67 (3) ◽  
pp. 186-188
Author(s):  
I. A. Ibatullin ◽  
G. G. Ruppel
Keyword(s):  
Traditional Method ◽  
Clinical Analysis ◽  
Gluteal Region ◽  
Layer By Layer ◽  
Anatomical Classification

We studied the layer-by-layer anatomy of the gluteal region on 102 preparations (51 corpses) and performed a clinical analysis in 312 patients with postinjection infections of the gluteal regions treated by the traditional method.

scholarly journals Assembly Based Methods to Support Product Innovation in Design for Additive Manufacturing: An Exploratory Case Study

2015 ◽  
Vol 137 (12) ◽  
Author(s):  
Floriane Laverne ◽  
Frédéric Segonds ◽  
Nabil Anwer ◽  
Marc Le Coq
Keyword(s):  
Additive Manufacturing ◽  
Product Innovation ◽  
Idea Generation ◽  
Generation Process ◽  
Design For Additive Manufacturing ◽  
Design Features ◽  
Systemic Level ◽  
Product Manufacturing

Additive manufacturing (AM) is emerging as an important manufacturing process and a key technology for enabling innovative product development. Design for additive manufacturing (DFAM) is nowadays a major challenge to exploit properly the potential of AM in product innovation and product manufacturing. However, in recent years, several DFAM methods have been developed with various design purposes. In this paper, we first present a state-of-the-art overview of the existing DFAM methods, then we introduce a classification of DFAM methods based on intermediate representations (IRs) and product's systemic level, and we make a comparison focused on the prospects for product innovation. Furthermore, we present an assembly based DFAM method using AM knowledge during the idea generation process in order to develop innovative architectures. A case study demonstrates the relevance of such approach. The main contribution of this paper is an early DFAM method consisting of four stages as follows: choice and development of (1) concepts, (2) working principles, (3) working structures, and (4) synthesis and conversion of the data in design features. This method will help designers to improve their design features, by taking into account the constraints of AM in the early stages.

scholarly journals RESEARCH SPECIFICS OF SEPARATE TYPES OF CYLINDER LOCKS PICKED BY SELF IMPRESSIONING MASTER KEYS

2018 ◽  
Vol 18 ◽  
pp. 316-323
Author(s):  
D. S. Miller ◽  
D. О. Petrov
Keyword(s):  
Mechanism Design ◽  
The Internet ◽  
Design Features ◽  
Important Place ◽  
Property Crimes ◽  
Expert Practice ◽  
The Way

Criminalistic research on locks takes an important place in prevention, qualification, disclosure and investigation of property crimes related to house penetration, so-called burglaries. The analysis of modern expert practice has established a tendency to increase the unauthorized (criminal) picking of cylinder pin locks with a horizontally oriented keyhole that has become widespread in last years. Its contributes a large number of manufactured devices (manufactured in China mainly) for picking indicated locks, namely master keys operating on the principle of self impressioning and can be purchased through the Internet, as well as a larger number video materials regarding their use. In the available criminalistic literature only singles, at some extent current and actual ways of unauthorized picking of cylinder pin locks using of outside objects with developed recommendations according research on such as manipulation method by means of a selected forged key and bumping are covered. Method of self impressioning that is the basis of picking modern locks mastered and successfully used by "qualified" burglars majority, in modern criminalistics is not mentioned at all. Therefore the purpose of this article is to highlight criminalistic research possibilities of certain types of cylinder pin locks, picked by means of an manufactured self impressioning master key. The article pays attention to such problem aspects: method of self impressioning using in the way of picking a lock with a cylinder mechanism; design features of self impressioning master key to cylinder locks, concerning to the solution of diagnostic and identification issues; traces classification of self impressioning master key remaining on lock details; difficulties research on cylinder locks that were subjected to action of a self impressioning master key.

scholarly journals 3D PRINTING AND 3D BIOPRINTING TO USE FOR MEDICAL APPLICATIONS

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Milan Šljivić ◽  
Dragoljub Mirjanić ◽  
Nataša Šljivić ◽  
Cristiano Fragassa ◽  
Ana Pavlović
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
3D Models ◽  
Physical Models ◽  
Layer By Layer ◽  
3D Bioprinting ◽  
Solid Objects ◽  
Modern Methods ◽  
Digital File

The Additive manufacturing 3D printing is a process of creating a three dimensional solid objects or rapid prototyping of 3D models from a digital file, which builds layer by layer. The 3D bioprinting is a form sophisticated of 3D printing technology involving cells and tissues for the production of tissue for regenerative medicine, which is also built layer by layer into the area of human tissue or organ. This paper defines the modern methods and materials of the AM, which are used for the development of physical models and individually adjusted implants for 3D printing for medical purposes. The main classification of 3D printing and 3D bioprinting technologies are also defined by typical materials and a field of application. It is proven that 3D printing and 3D bioprinting techniques have a huge potential and a possibility to revolutionize the field of medicine.

scholarly journals CLASSIFICATION AND DESIGN FEATURES OF COMBINED SHIPS

2020 ◽  
pp. 40-50
Author(s):  
Ilya A. Gulyaev Gulyaev ◽  
Evgeniy P. Ronnov
Keyword(s):  
Mathematical Modeling ◽  
Ship Design ◽  
Design Features ◽  
Different Types ◽  
Modern Classification

    This article presents a modern classification of sea-going combined ships of unrestricted navigation according to their type and purpose; as well as provides the review and analysis of national designs of combined restricted, inland and river-sea navigation ships in service and their characteristics. A review of the studies in the field of optimization and justification of key components and characteristics of combined ships is given. Apart from that, this article proposes a solution of the task aimed at optimization of combined ships’ components and characteristics by means of methods and software to be developed on the basis of mathematical modeling of a ship design for different types.

scholarly journals MOBILE HYDRAULIC SHEARS FOR DEMOLITION OF BUILDINGS AND STRUCTURES

2021 ◽  
pp. 26-37
Author(s):  
R.A. Mendekeev ◽  
A.B. Nyshanbaeva ◽  
U.S. Kydyralieva ◽  
U. Turarbek u.
Keyword(s):  
Design Features ◽  
Detailed Review ◽  
Explosive Destruction

The article provides a detailed review of special machines for non-explosive destruction and demolition of old and emergency buildings and structures - on mobile hydraulic shears based on excavators, considers their design features, developed a classification of mobile hydraulic shears.

scholarly journals Semi-Supervised Deep Metric Learning Networks for Classification of Polarimetric SAR Data

2020 ◽  
Vol 12 (10) ◽  
pp. 1593
Author(s):  
Hongying Liu ◽  
Ruyi Luo ◽  
Fanhua Shang ◽  
Xuechun Meng ◽  
Shuiping Gou ◽  
...  
Keyword(s):  
Real World ◽  
Metric Learning ◽  
Feature Learning ◽  
Linear Mapping ◽  
Layer By Layer ◽  
Learning Networks ◽  
Distance Metric ◽  
Linear Projection ◽  
Deep Metric Learning

Recently, classification methods based on deep learning have attained sound results for the classification of Polarimetric synthetic aperture radar (PolSAR) data. However, they generally require a great deal of labeled data to train their models, which limits their potential real-world applications. This paper proposes a novel semi-supervised deep metric learning network (SSDMLN) for feature learning and classification of PolSAR data. Inspired by distance metric learning, we construct a network, which transforms the linear mapping of metric learning into the non-linear projection in the layer-by-layer learning. With the prior knowledge of the sample categories, the network also learns a distance metric under which all pairs of similarly labeled samples are closer and dissimilar samples have larger relative distances. Moreover, we introduce a new manifold regularization to reduce the distance between neighboring samples since they are more likely to be homogeneous. The categorizing is achieved by using a simple classifier. Several experiments on both synthetic and real-world PolSAR data from different sensors are conducted and they demonstrate the effectiveness of SSDMLN with limited labeled samples, and SSDMLN is superior to state-of-the-art methods.

scholarly journals Analysis of bistable electromagnetic relays design features

2021 ◽  
pp. 13-20
Author(s):  
Yevhenii Zorin ◽  
Oleksandr Chepeliuk ◽  
Yurii Hryshchuk ◽  
Viacheslav Leshchenko
Keyword(s):  
Current Level ◽  
Technical Development ◽  
Control Voltage ◽  
Design Features ◽  
Relay Contact ◽  
Functional Features ◽  
Design Type ◽  
Electromagnetic Relays ◽  
Diagram Type

This paper pays attention to a classification of bistable electromagnetic relays. The following signs of the classification of mentioned relays are emphasized, such as: design, type of contact fixation, relay contact diagram, type of current and value of the control voltage of the coil, the number of coils, nature of the load switched by the relay; the power consumed by the coil, and others. The undertaken classification systematizes information on the design, technical and functional features and parameters of such relays and demonstrates the current level of technical development of relays that are mentioned above. A conclusion is made concerning tendencies and directions of bistable electromagnetic relays capabilities developing in the future by the authors.

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