Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with precise orbit and clock products Global Positioning System (GPS) BeiDou Navigation Satellite (BDS), we studied model of combined GPS/BDS point positioning, then analyzed convergence speed short-time (6 h) positioning accuracy. The calculation results show that in static average time GPS is about 50 min, its horizontal accuracy better than 2 cm while vertical 4 cm. 40 close to GPS. In kinematic 72 5 12 57 3 9...

The aim of ontology research is to develop knowledge representations that can be shared and reused. Domain ontologies provide common understanding a specific domain. In this paper, we discuss analyze some development methodologies. Based on the analysis these methodologies IEEE Standard for developing software life cycle processes, propose engineering approach build domain ontology. Following approach, using editor Hozo, have developed C Programming Also describe our experience in ontology,...

The goal of this paper is to serve as a guide for selecting detection architecture Oracle Bone Inscription (OBI) that achieves the right speed/memory/accuracy balance given platform. Many successful systems have been proposed in recent years, but directly migrating these methods OBI data may lead unsatisfying performance due corrosion, noise, and distribution. We present unified implementation Faster R-CNN [1], SSD [2], YOLOv3 [3], RFBnet [4], RefineDet [5] which we view experiment...

The detection of Oracle Bone Inscription (OBI) is one the most fundamental aspects oracle bone morphology. However, method depending on experts' experience requires longterm learning and accumulation for professional knowledge. This paper investigated performance deep-learning-based object framework in OBI dataset, then selected with best as baseline made a series optimization. Specifically, we first redesigned sizes ratios anchor box according to data characteristics by using K- means...

Ontologies are one of the most popular and widespread means knowledge representation reuse. A few research groups have proposed a series methodologies for developing their own standard ontologies. However, because this ontological construction concerns special fields, there is no method to build domain ontology. In paper, based on discussing analyzing representative ontology building methodologies, authors propose engineering approach by combining software development life cycle IEEE...

The detection of Oracle Bone Inscriptions (OBIs) is one the most fundamental tasks in study Bone, which aims to locate positions OBIs on rubbing images. existing methods are based scheme anchor boxes, involving complex network design and a great number boxes. In order overcome problem, this paper proposes simpler but more effective detector by using an anchor-free scheme, where shape-adaptive Gaussian kernels employed represent spatial regions different OBIs. More specifically, address...

Ontology-based data access (OBDA) is a well-established approach to information management which facilitates the (single) relational source through mediation of high-level ontology, and use declarative mapping linking layer ontology. We formally introduce here notion ontology-based federation (OBDF) denote framework that combines OBDA with where multiple, possibly heterogeneous sources are virtually exposed as single database. discuss opportunities challenges OBDF, provide techniques deliver...

In the era of big data, massive educational resources are stored on internet and mobile networks. However, most these heterogeneous decentralized, they have different format. The designed for humans to read not understandable machine. Their low level sharing reuse make them difficult acquire. How access users need quickly efficiently take advantage is a serious problem. order solve problem, an ontology-based integration framework strategies proposed. Using advantages ontological semantics...

This paper proposes a strategy of query optimization based on domain ontology. Three kinds respectively is-a relation, part-of and equivalent-class relation in the ontology are investigated. By using this strategy, domain-specific information searching system building upon GoogleAPI is built, where optimized user processed. Comparisons results non-optimized show effectiveness improving precision recall searching.

In this paper, we propose a novel recognition method for fuzzy Oracle-bone inscriptions. Accurate of characters is difficult problem due to their complex shapes. Our strategy proposed based on statistical analysis context and combining the Hopfield network. First, according oracle inscriptions statistics information, candidate font library established, second, initial work processed oracle-bone's character network, last, OBI component vector used calculate similarity characters. According...

Introduction: To solve the problems of small proportion bolts in aerial images power transmission lines, differences between classes, and difficulty extracting refined features, this paper proposes a method for detecting line their defects based on positional relationships. Methods: Firstly, spatial attention module is added to Faster R-CNN, using two parallel cross obtain path features global respectively, feature enhancement performed output from convolution layer. Then, starting position...

According to the difficulty of Oracle Bone Inscriptions(OBI) knowledge sharing, a scenario OBI ontology construction is proposed. Because hard work building, transformation method from existing database discussed. Firstly, analysed similarity between entity-relationship model and RDF model. Secondly, introduced ideas process. Finally, implemented by using method. It semi-automatic because there requires manual intervention during process transformation. Results show that can really reduce...

Chinese characters are the basic elements of culture. It is also important basis foreign communication and exchange. Only simply considers glyph pronunciation modern character as object cannot fully display extensive profound needs to consider evolution characters, such Oracle Bone Inscriptions (OBI), bronze inscriptions, seal script, official regular cursive script running script. describe inherent relationship among various stages ensure their semantic consistency. Although there...

Cherrypickers are an important class of machines that can lift people to great heights. Understanding the dynamics and stability these is crucial for efficient safe operation. A dynamic model has been developed capture oscillatory machine as a function configuration mass properties. Simulation studies reveal complex behavior machine. In many cases, oscillation endpoint bucket causes difficulties dangers operators. An input-shaping controller added system decrease dynamics. portable...

Introduces distributed parallel method into information retrieval area. Takes system based on database as an example, and proposes a strategy using java processing framework JPPF. Some experiments building MS SQL Server 2000 have been done by the system. The experiment results demonstrated that computing techniques can be applied to significantly improve performance of

To achieve the synchronous opetation and control of each node in manufacturing industry supply chain, autonomous, adaptive, cooperative service agent is adopted to chain agility reconfigurability. The interaction need different types nodes studied, agents establish appropriate contracts are established. A prototype steel agile system with web technology realized. experiment shows that method can support enterprises smartly conduct rapid reconfiguration adjustment at a low cost.

The paper presents a multi-level grey evaluation method for ROS performance testing and evaluation. Typical indicators of are selected from application layer, system layer kernel layer. hierarchical based on test data is used the fuzzy evaluation, then, proposed to calculate weight assignment each set. Due rationalized set ROS, result deviation caused by experience range reduced, which has certain guiding significance embedded real-time operating system.