Blog Opinion Retrieval with Generation Model and Mixture Model

Blog opinion retrieval aims to find blogs with opinionated information related to a given topic. Its main problem is to compute the opinion score, which balances topic relevance and opinion relevance. To deal with this problem a generative model deduced by a Bayesian approach is pro-posed, and an improved mixture model is proposed to estimate the opinion relevance between a blog and a given topic in our retrieval framework. Moreover, pointwise mutual information is used to expand sentiment words for different topics based on a general sentimental lexicon. The correlation between topic and candidate words is applied in the process of both expanding sentiment words and estimating sentence opinion scores. Experimental results show that the proposed approaches improve upon the state-of-the-art opinion retrieval method on TREC2010 dataset.     

Product-design knowledge retrieval based on ontology

In order to improve the utilization ratio of knowledge retrieval,a product-design knowledge retrieval approach based on ontology is proposed.A representation model of product-design knowledge is proposed according to its characteristics.Domain ontology of product-design is established and the semantic annotation technology is used to connect the design knowledge and ontology.A new semantic annotation format is developed and semantic information of the design knowledge is enriched by making use of ontology.On that basis a retrieval algorithm is designed for semantic retrieval.Finally,this approach is used in a knowledge management system for military-vehicle design and its effectiveness and feasibility are validated.Results show that the recall ratio and the precision ratio of knowledge retrieval are improved greatly and users’ requirements in semantic retrieval are satisfied.     

A Communication Protocol and Monitoring Policy for Input/Output Vehicles in an Automatic Storage and Retrieval System

The acquisition and processing of equipment information is pivotol to control and management of the automated storage and retrieval system.The work of this paper is based on the automatic storage and retrieval experimental system of Wuhan University of Technology.First,the output/input flow and the control information of storage/retrieval vehicle are studied and the plotting finite state machine model of the stacking crane is established.Then,the communication protocol between the center con- trol management computer and the PLC of stacking crane is designed.Finally,the stacking crane' s monitoring data,which in- clude operating time,running states and real-time position status,are gained by analyzing the communication protocol.The de- tailed program for the acquisition and processing of monitoring information is developed.This method is suitable for the equipment monitoring of the whole system,and provides a platform for studying the intelligent control and optimal scheduling strategies of AS/RS.     

Multi-action-based approach for constructing knowledge map

To alleviate the information overload in the product design process, this work proposes a multi-action-based method for constructing knowledge map. Since the relationships of knowledge are implicit in the collected user activities, the method calculates the similarity according to the collected user activities. Three concepts, including knowledge, action and user, are explained first. Based on this, the similarity calculation method is illustrated in detail. The dependencies of actions and relations of the user are considered in the calculation method. Further, the approach of applying the constructed knowledge map to alleviate information overload is proposed. At last, the proposed method is validated by a knowledge search and result comparison experiment.     

A PRELIMINARY STUDY OF EXPERT SYSTEM FOR MINING UNDER STRUCTURES

The expert system MUST (Mining Under Structures) shown in this paper and established by the authors is a preliminary expert system to solve the policy-making problems formining under structures by means of computers instead of humanbeing. Based on the experience of relative experts,the authors established a knowledge base about the minings under structures ,researched into reasonable method to simulate thinking processes of human experts when they are solvin8 the problems, established the network of an expert system and named it‘MUST system‘MUST system uses the method of the structural system analysis approach. A kind of methods of Turbo Prolog and Fortran 77 language alternations is designed to meet the needs of exchange information within the MUST system. Based on this kind of methods MUST system has been constructed and realised on IBM-PC computer. For verifying the correctness. suitability and reliablity of MUST system,some practical examples of minings under structures were tentatively solved using MUST system ,whose results are satisfactory.     

Application of fuzzy cognitive map in information intelligent push

Since computer system functions are becoming increasingly complex, the user has to spend much more time on the process of seeking information, instead of utilizing the required information. Information intelligent push technology could replace the traditional method to speed up the information retrieval process. The fuzzy cognitive map has strong knowledge representation ability and reasoning capability. Information intelligent push with the basis on fuzzy cognitive map could abstract the computer user's operations to a fuzzy cognitive map, and infer the user's operating intentions. The reasoning results will be translated into operational events, and drive the computer system to push appropriate information to the user.     

Enhanced biometric encryption algorithm for private key protection in BioPKI system

Protection of private key is the most critical part in public key infrastructure（PKI） system since it depends on the confidentiality of private key. Thread of password detection has been known as the vulnerability in this PKI system. Recently, studies have been conducted on Bio PKI system that uses the biometric information of users in order to replace the password type of private key protection in PKI system. However, Bio PKI system also has vulnerability in that biometric information used for protection of private key cannot be reused once it is stolen or lost. So, we propose the method to protect the private key using FIDSEQi which binds sequence to biometric information. The proposed method enhances reusability of biometric information and presents higher attack complexity than the method of authentication by cross matching single biometric information.     

Research on Maintenance Information Management System for Distributed Manufacture System

An architecture and design of a maintenance information management system for distributed manufacture system is presented in this paper, and its related key technologies are studied and implemented also. A frame of the maintenance information management system oriented human-machine monitoring is designed, and using object-oriented method, a general maintenance information management system based on SQL server engineering database and adopted client/server/database three-layer mode can be established. Then, discussions on control technologies of maintenance information management system and remote distributed diagnostics and maintenance system are emphasized. The system is not only able to identify and diagnose faults of distributed manufacture system quickly, improve system stability, but also has intelligent maintenance functions.     

ADAPTIVE ERROR-LIMITING METHOD SUITABLEFOR THE WALSH CODE SHUTTING MULTIPLEXING IN THE MINE MONITOR SYSTEM

Through the analysis for the process of Walsh modulation and demodulation, the adaptive error-limiting method suitable for the Walsh code shutting multiplexing in the mine monitor system is advanced in this article. It is proved by theoretical analysis and circuit experiments that this method is easy to carry out and can not onlyimprove the quality of information transmission but also meet the requirement of thesystem patrol test time without the increasement of system investment.     

Realization of Robust Diagonal Dominance

In this paper, the realization of diagonal dominance in an uncertain system is discussed. First, the sufficient and necessary conditions are formulated for a deterministic system to realize diagonal dominance. Secondly, the conditions for realizing robust diagonal dominance in the system where exist perturbation are given. Finally, an illustrative example is provided to demonstrate the effectiveness of this method.     

PLANNING DESIGN OFCOMPUTER REGION NETWORK

In this paper, authors describe the characters and the present situation of computer region network. Moreover, authors put forward the method to plan and design ration ally the computer regional network system depending on the actual situation, in order to share the resources of software and hardware resources of the network in best way and get higher efficiency of information management.     

A structural health assessment method for shield tunnels based on torsional wave speed

Following recent rapid developments in tunnel engineering in China,the heavy structural maintenance work of the future is likely to pose a great challenge.Newly developed vibration-based health assessment and monitoring methods offer good prospects for large-scale structural monitoring,hidden surface detection and disease pre-judgment.However,because the dynamic properties of tunnels are sensitive to the coupling and damping effects of the surrounding soil,there is little relevant research on tunnel structures.Using the PiP(pipe in pipe)model,the intrinsic tunnel modes and their response characteristics are investigated in this paper,and the degree to which the identification of these characteristics is influenced by mode superposition and the soil coupling effect are also considered.The response features of these flexible wave modes are found to be barely recognizable in a tunnel-soil coupled system,while the phase velocity of the torsional wave can be determined by combining phase spectrum analysis and the HHT(Hilbert-Huang transformation)method.A new structural health assessment method based on the torsional wave speed is therefore proposed.In this method,the torsional wave speed is used to determine the tunnel structure’s global stiffness based on a newly developed dispersion algorithm.The calculated stiffness is then used to evaluate the tunnel’s structural service status.A field test was also carried out at a newly built tunnel to validate the proposed method;the tunnel structure’s Young’s modulus was obtained and was very close to the designed value.This indicates that this method is an effective way to assess tunnel service conditions,and also provides a theoretical basis for future applications to health assessment of shield tunnels.     

3D Model Retrieval Method Based on Affinity Propagation Clustering

In order to improve the accuracy and efficiency of 3D model retrieval, the method based on affinity propagation clustering algorithm is proposed. Firstly, projection ray-based method is proposed to improve the feature extraction efficiency of 3D models. Based on the relationship between model and its projection, the intersection in 3D space is transformed into intersection in 2D space, which reduces the number of intersection and improves the efficiency of the extraction algorithm. In feature extraction, multi-layer spheres method is analyzed. The two-layer spheres method makes the feature vector more accurate and improves retrieval precision. Secondly, Semi-supervised Affinity Propagation (S-AP) clustering is utilized because it can be applied to different cluster structures. The S-AP algorithm is adopted to find the center models and then the center model collection is built. During retrieval process, the collection is utilized to classify the query model into corresponding model base and then the most similar model is retrieved in the model base. Finally, 75 sample models from Princeton library are selected to do the experiment and then 36 models are used for retrieval test. The results validate that the proposed method outperforms the original method and the retrieval precision and recall ratios are improved effectively.     

Research on Social Tags Recommendation Techniques Based on Content

With the rapid development of the Internet, more and more people begin to pay attention to social tagging which is a flexible and efficient method for classification. How to retrieve tags from the huge tag library becomes a hot topic to research. Firstly, the existing systems of social tags and its recommendation principles used in Web 2.0 are introduced in this paper. Secondly, the existing techniques about tag recommendation are summarized, and their merits and demerits are analysed. In most techniques for tag recommendation only two dimensions “resource-user” are considered. But there are three dimensions “resource-user-tag” in recommendation system based on social tags. A new method of social tag recommendation based on content-Feature Vote Tagging (FVT) is proposed in this paper. Finally, several kinds of evaluation methods are used to assess the return results of methods. The experiment results show that the method proposed in this paper can satisfy the expectation of the user for the recommendation results.     

A comprehensive method for joint wear prediction in planar mechanical systems with clearances considering complex contact conditions

A comprehensive method to predict wear in planar mechanical systems with clearance joints is presented and discussed in this paper.This method consists of a system dynamic analysis and a joint wear prediction.As the size and shape of the clearance are dictated by wear and evolve with the dynamic response of the system,the contact between the journal and bearing could be conformal or non-conformal,which makes the contact conditions in clearance joints quite complicated.Therefore a modified contact force model is employed to evaluate the joint reaction force in this study.As the nonlinear stiffness coefficient is related to the physical and geometrical properties of contact bodies and varies with the deformation,this contact force model is applicable to different contact conditions between the journal and bearing.Furthermore,based on the Archard’s wear model,the amount of wear can be quantified in the joint.And the geometry is updated to reflect the evolving contact boundary.Then,the wear process and the contact force model are integrated into the motion equations of the system to perform coupled iterative analyses between system dynamic response and joint wear prediction.In addition,a slider-crank mechanism is simulated as an example to demonstrate efficiency of the proposed method and to carry out a parametric study on mechanical systems considering joint wear.The influence of clearance size and driving power are discussed and compared respectively.The index of concordance is introduced to quantify contributions of contact pressure and sliding distance to wear rate under different types of journal motion.This study could help to predict joint wear in mechanical systems with clearances and optimize mechanisms in design.     

A case study of customer satisfaction for information technology solutions

There are numerous information technology solutions including hardware and software. A company that provides the solution should have knowledge of the customer needs in the purpose of sailing strategy or upgrade policy. The needs are also directly connected to the user satisfaction. However, the users have respective points of view in the needs as well as they may not identify the requirements to improve the solution. SERVQUAL can be an appropriate method to define and measure the customer satisfaction for the information technology solutions. As a case study of the customer satisfaction, the modified SERVQUAL items and scoring method are applied to a cyber-infrastructure system named CyberL ab in Korea. The measurement results of user satisfaction for CyberL ab are provided to confirm that our proposed method performs as we intended. From the results, we can score the satisfaction level of users and identify their needs in the various aspects. The total user satisfaction level for CyberL ab is scored by 88.3.     

Effects of foundation damage and water-level change on vibration modal parameters of gravity-type caisson structure

In this paper,the effects of foundation damage and water-level change on vibration characteristics of gravity-type caisson structure are examined by analyzing modal parameters extracted from output-only information.To achieve the objective,the following approaches are implemented.Firstly,vibration response analysis methods are selected to estimate power spectral density and modal parameters such as natural frequency,damping ratio and mode shape of a lab-scale caisson structural system.Secondly,vibration tests on the lab-scale caisson system are performed under a series of test scenarios which include three water-level changes and three damage levels.Thirdly,experimental modal parameters corresponding to the damaging cases as well as the water level cases are extracted by frequency domain decomposition method and stochastic subspace identification method.Finally,the effects of the water-level variation and foundation damage on the extracted modal parameters are examined to assess the feasibility of the vibration-based damage detection in gravity-type caisson structures under water-level uncertainty.     

System dynamics simulation of the civil-military integrated innovation system of military enterprises

Civil-military inosculation of military enterprises benefits national defense industries by promoting the building of civil-military inosculation innovation system. To analyze the operation mechanism of the civil-military integrated innovation system of the military enterprises under the new situation,the system dynamics method is used to study the feedback relations among the factors and structure of the system and the Anylogic software is used to establish the simulation model . The simulation results indicate that: the degree of enthusiasm of private enterprises to participate in the defense industry,the degree of information sharing and the degree of cooperation between the military enterprises and universities and research institutions are extremely important in the civil-military integrated innovation system. According to the simulation results,some targeted suggestions are put forward to strengthen the innovational civil-military integrated system building of the military enterprises.     

Hamiltonian system for orthotropic plate bending based on analogy theory

Based on analogy between plane elasticity and plate bending as well as variational principles of mixed energy, Hamiltonian system is further led to orthotropic plate bending problems in this paper. Thus many effective methods of mathematical physics such as separation of variables and eigen-function expansion can be employed in orthotropic plate bending problems as they are used in plane e-lasticity. Analytical solutions of rectangular plate are presented directly, which expands the range of analytical solutions. There is an essential distinction between this method and traditional semi-inverse method. Numerical results of orthotropic plate with two lateral sides fixed are included to demonstrate the effectiveness and accuracy of this method.