Detection of the low-altitude and slow-speed small (LSS) targets is one most popular research topics in remote sensing. Despite a few existing approaches, there still an accuracy gap for satisfying practical needs. As LSS are too to extract useful features, deep learning based algorithms can hardly be used. To this end, we propose article effective strategy determining region interest, using multiscale layered image fusion method representative information LSS-target detection. In addition,...

Personal privacy is an important issue in the process of logistics transit since personal information contained express list visible. In this paper, we propose a method, named Logistics Information Privacy Protection System based on encrypted QR code (LIPPS). It encrypts and stores ciphertext with segment encryption method. This paper designs authorization mechanism different levels to decrypt corresponding complete business operations. system can solve contradiction between protection by...

For intermittent fault diagnosis, it is important to extract features. Since different package modes have dynamic characteristics, an diagnosis method based on the analysis of solder joints proposed. First, joint models packaging are constructed, and response characteristics faults analyzed model. The proven be using theoretical By analyzing parameters, generalized strength constructed as feature diagnose for modes. Next, combining above conclusions with possible determine location faults....

The Map-Reduce programming model is now drawing both academic and industrial attentions for processing large data. Hadoop, one of the most popular implementations model, has been widely adopted. To support application programs written in languages other than Java, Hadoop introduces a streaming mechanism that allows it to communicate with external through pipes. Because added overhead associated pipes context switches, performance significantly worse native jobs. We propose ShmStreaming,...

Many connections exist in complex electronic equipment, which leads to a long duration of intermittent fault test and difficulty achieving comprehensive coverage fault. The mechanism the multichannel parameter parallel capture method are investigated. A smaller module covers multiple connection faults electronics prevents missed detections. Based on results, reliability assessment link with is needed next step. correlation between parameters analyzed, used evaluate reliability. An aviation...

The permeability of loosely porous media is difficult to test. A vacuum extraction based in-situ test for loose has been proposed. calculation follows from the typical Darcy's law. mathematical computational model in situ testing on pressure decay curves developed. effect depth return packing analysed and obtained verify validity calculated method.

Collaborative filter (CF) is the most successful technique in recommender system, which makes personalize recommendations during online interaction. We propose a new Semi-sparse algorithm based on multi-layer optimization to speed up basic Pearson Correlation Coefficient of CF. spares out over-reduplicate accessing and judgement selected sparse vector accelerate batch similarity-comparisons one thread. reduce-vector thread-pool restrict lock using critical resources parallelize...

The test path of solder joint intermittent connection faults under direct-current stimulus is examined in this paper. According to the physical structure circuit, a network model established first. A node utilised represent node. edge refers number path. Then, selection criteria based on degree index are proposed and covered using fewer paths. Finally, three circuits selected verify method. To if fault by paths, simulated switch. results show that method can detect Additionally, detection...

Collaborative Filtering is one of the most important techniques in recommender systems. Current researches on focus how to improve accuracy. However, it same importance recommend more potential interests users because many them have expectations for recommendation list besides systems did not address this problem. This paper focuses help find list. We propose an sampling-based algorithm Probabilistic Top-N Selection users, and two metrics, average predicted rating category coverage, assess...

Purpose This paper aims to reproduce the electrical connector intermittent fault behaviours with step-up vibration stress while maintaining integrity of product. Design/methodology/approach A dynamic model an under is established for contact resistance analysis. Next, characteristics are analysed, and cumulative damage theory used calculate different stresses during reproduction test. To reduce improve efficiency, Findings The proposed method can behaviour, test more efficient than constant...

In this paper, we proposed a visual position calibration method using colored rectangle signboards for mobile robot which is designed to work in room environment. The are placed several known positions. Using Canny algorithm detect the edge of color area calculate vanishing points image signboard, it possible obtain relative direction and distance between signboard by single image. Experiments were conducted. results showed effective errors set up positions experimental about 1.5 degrees 3...

The interesting, targeted, relevant advertisement is considered as one of the most honest proceeds for personalizing recommendation. Topic identification important technique unstructured Web pages. Conventional content classification approaches based on bag words are difficult to process massive In this paper, Wikipedia Category Network (WCN) nodes used identify a page topic and estimate user's interest profile. largest contents knowledge database updated dynamically. A basic data set marked...

For intermittent fault diagnosis, it is important to extract features. An feature extraction method based on wavelet transform proposed. Firstly, the stress-intensity model used describe process of faults, analysing main part signal characteristics. Considering randomness and suddenness features advantages in mutation singularity detection. By extracting energy through coefficients, are obtained, which can be identify isolate faults. Finally, by a simulating circuit, transient response...

With the rapid development of internet, applications recommendation systems for online shops and entertainment platforms become more popular. In order to improve effectiveness recommendation, external information has been incorporated into various algorithms, such as location social relationship. However, most algorithms only focus on introduction without depth analysis intrinsic mechanism in information. This paper proposed a transfer model trusted relationship, optimized reliability using...

Aiming at intermittent fault detection problem that caused by solder joint under vibration stress, induced mechanism of is analysed and the method number studied. Firstly, theoretical analysis connection stress conducted. Relationships between parameters faults are described. Dynamic characteristics interaction contact interface stress. However, within a finite time, dynamic parameter amplitude does not depend on morphology, resistance proportional to acceleration, displacement frequency....

To study the failure modes that can't be injected in testability test, an equivalent fault selection method is presented paper. The principle and types of test are explained according to characteristics propagation. By introducing switch element fault-test dependency model, analytical model formed. was applied select injection sample test. effects between original were compared proved feasible.

Aimed at the damage state identification of aeronautical electrical connectors, intermittent fault signal characteristics are extracted, and a method for identifying states connectors based on wavelet time-frequency entropy energy sequence is proposed. First, process under vibration stress analysed. The dynamics main parameters described, duration amplitude represent in two different dimensions. A was proposed where used feature extraction divided into five levels according to values....

Abstract Aiming at the problem of sandy soil collection, a multi-DOF mechanical structure is improved. Manipulator developed by optimizing integral middle boom to telescopic arm, and an automatic quick coupler designed which between manipulator operating unit. The analyzed based on dynamic theory, results limited operation range cylinder driving force are obtained, could provide theoretical basis for structural design selection. An autonomous algorithm collection proposed. angle...

Saving energy usually leads to performance degradation. We explore the limits of tag reduction on a multi-core processor with guaranteed effect. In our previous work, is applied processors and shows significant savings, meanwhile it causes overhead. this paper, we have found out that when used processors, number cores key factor affects both performance. More specifically, as core integrated into chip increases, can save more energy, while Tag has are represented by cores. order derive...

For the crack intermittency detection in circuit board, a method based on time domain reflectometry is proposed. And signal feature extracted, highly sensitive to defect. Firstly, order analyze change trend of under intermittent disconnection. The influence conductor physical parameters analyzed. include AC/DC resistance, inductance and capacitance. then principle reflection described. ringing phenomenon that caused by used for detection. Therefore maximum, minimum peak-peak values are...