Off-line programming of spot-weld robot is the future application robotics. It could develop programs without access to itself and reduce time required for manufacturing process. In this paper, an approach implement off-line based on Robcad with process knowledge car-body in White welding was proposed. Some common problems, such as motion simulation, collision detection calibration can be solved by approach. Finally, spot-welding robots a car's work-station realized.

We examined c-kit protein expression and mutations of the gene in 40 human osteosarcoma samples to their relationship with clinicopathology prognosis disease. The was evaluated by immunohistochemistry single-strand conformational polymorphism performed evaluate exons 11 17. Expression occurred 25 (62.5%) samples. Patients osteosarcomas higher levels were significantly more likely experience local disease recurrence had a lower survival time than patients expression. found no evidence or This...

The Brillouin optical time-domain reflectometer (BOTDR) system, which is based on the frequency shift (BFS) of scattering spectrum, has been widely applied to monitor temperature and strain in many fields. measurement accuracy BFS directly affects monitoring location change or events. In this study, characteristics least-squares fitting optimal solution power spectrum are theoretically investigated, a half-peak algorithm proposed measure with high stability. particular, it can precisely...

The effective masses of hole and electron in the inversion layers have been quantitatively characterized for Ge p- n-MOSFETs, first time, with Shubnikov-de Haas (SdH) oscillations measurements at ultra low temperatures. It was found that mass clearly increased a larger Ns both (100)/(110)/(111) p n-MOSFETs. effectiveness necessity considering change layer charge density also confirmed MOSFETs performance modeling simulation.

A hybrid cladding ring-core photonic crystal fiber (PCF) for transmitting orbital angular momentum (OAM) modes is proposed, which breaks the circular symmetry of structure to suppress spin–orbit coupling and promotes bending resistance. Through optimization parameters, designed can support 22 OAM (6 mode groups) over a 200-nm wide bandwidth (covering whole C + L band) with large effective refractive index separation between adjacent (>10−4) groups (>3.6 × 10−3), low confinement losses...

The current wireless communication network is a content-careless network, in which every request needs new transmission, even those requests imply the same content. However, Long-Tail distribution of users' interests caused by converging behavior, determines that redundant traffic, re-transmission bearing content, rather enormous. Therefore scheme transmission introduces large energy waste. In our previous work, we put forward novel CASoRT to mitigate such waste broadcasting hot contents....

A universal criterion for the existence of an equilibrium state at low temperatures is established based on requirement that temperature fluctuations be small and third law thermodynamics. The implies sufficiently minimum number particles increases as decreases. application to phonon gas, ideal Bose Fermi gas gives quantitative results are compatible with recent nanoscale systems.

With the development of artificial intelligence technology, Clinical Decision Support System (CDSS) has been widely used. This paper presents a CDSS system, which called Intelligent Auxiliary Diagnostic for Common Disease (CD-IADS). CD-IADS assists primary doctors in diagnosis common diseases with patient's symptoms, signs, tests and personal background, improves doctors' working efficiency reduces their misdiagnosis rate. In CD-IADS, medical experts construct Medical Knowledge Graph...

In ord to solve the hole collapse problem of mud shale in LiaoHe Oilfield,further research and improment KCl drilling fluid was conducted.and promotion mine house, two South Beach Sea other regions, prove that strong anti-sloughing system capacity, accident low, Liaohe Oilfield meet needs sloughing shale.

An image encryption algorithm by scrambling both the pixel location and value with sudoku grids matrix is proposed in this paper. As there a certain mapping mode Between Natural order numeric row, line block grids, adopts as secret key scrambles according to mode. The suitable for any size. simulation experiments show that it has good efficiency perfect effects. Also transferring attack can be distributed equally which high robustness, restoration result produced.

Radiofrequency ablation (RFA) was originally used primarily for the treatment of regional metastatic lymph nodes from recurrent thyroid cancers in field surgery. In recent years it is gradually to treat a part benign nodules. However, domestic issues resulting indiscriminately enlarged RFA indication and lack standardization therapy become more prominent, including initial operable by RFA, which against current consensus about patients with nodules management guidelines cancers. Therefore,...

Searching interested images accurately, which has received considerable attention from researchers in the field like image processing, computer vision and multimedia systems last decades, is a challenging problem. In view of this, multi-model retrieval method based on rough set inference rules colour mutual information proposed. At first, set-based model accomplishes initial semantic words proposed this paper. Furthermore, order to overcome problem that simplicity annotation can cause...

Spatial Pyramid Matching (SPM) and its variants have achieved a lot of success in image classification. However, the process extraction SIFT descriptors may cause texture information loss under SPM framework. In addition, traditional Grey Level Co-occurrence Matrices (GLCM) method does not consider spatial relationship raw pixels. this paper, to solve issues, an improved GLCM are proposed, which enhances performance original for feature representation. Firstly, images subdivided increasingly...

The wheel hub PCD (Pitch Circle Diameter) is the diameter of circle whose circumference connects centers all bolt holes in hub. Common patterns are four, five and six-hole patterns, etc, product number an important parameter hubs. This article discusses digital-image-processing-aided precise measurement geometric data hole-distributions, such as bolt-hole-center coordinates x0 y0, pitch PCD, angle between adjacent θ, axle-hole-center radius from each hole to center axle hole, etc.

According to the international Micromouse competition requirements suited for IEEE standard maze, a kind of based on C8051F120 is designed in this paper. The hardware structure and software algorithm are specifically introduced, Center Toward Rule Bellman-Ford Algorithm used turning, searching attitude control optically designed. can find optimal route maze by 0.4 s walk rapidly stably.

Liao he Oilfield has been developed for many years, especially with the continuous expansion of development scale heavy oil blocks. With extension time, management difficulty wells is also increasing. advancement digital fields, software and advanced methods have emerged in recent years aimed at improving level production efficiency well systems. However, due to cyclical variability thermal recovery based on traditional thin theory not suitable. Therefore, mechanical parameter adjustment...

We propose a method using improved KNN to classify double-peak spectrum data of BOTDR. It significantly improves both the sensing accuracy and spatial resolution in transition section temperature change or strain events.

The establishment and improvement of SAGD dynamic monitoring system is the basis to ensure development performance. Block Du 84, District Shu1, Liaohe Oilfield, has been conducting pilot for mid-deep super heavy oil since 2005, 73 well groups have converted. With continuous expansion converted scale, occurrence production contradictions, such as uneven steam chamber, different capacity drainage, flash at wellhead in process lead more difficult management Wells. Therefore, comprehensive...