the online learning becomes more and more popular where visualization of 3D objects can be employed to lots of fields, e.g., 3D building information modeling for architecture, 3D city model for urban planning, 3D anim...
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ISBN:
(纸本)9783030669058;9783030669065
the online learning becomes more and more popular where visualization of 3D objects can be employed to lots of fields, e.g., 3D building information modeling for architecture, 3D city model for urban planning, 3D animation for film, 3D skeleton visualization of medical treatment, etc.. In tradition, the most popular tool for 3D modeling and visualization is OpenGL which is based on Client/Server. In another word, C++ code for OpenGL must be installed and configured firstly which is not convenient for new beginners. By contrast, this paper focus on visualization of 3D objects in computer Graphics and GIS (geographicinformationsystem) purely depending on JavaScript technology where no additional software or plugins, applet, ActiveX control is needed. Typical JavaScript libraries covers threeJS for computer Graphics, OpenLayers for 2D GIS and CesiumJS for 3D GIS. Based on the above libraries, e-learners could view and manipulate 3D objects in web browser (e.g., Google Chrome). Such intuitive and convenient 3D visualization and manipulation results in much more interesting for learning.
＜正＞A highway distress and preventive measures decision support system based on WebGIS and J2EE architec- ture were studied,and the key issues for the system are *** issues as spatial data and attribute data or- gan...
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＜正＞A highway distress and preventive measures decision support system based on WebGIS and J2EE architec- ture were studied,and the key issues for the system are *** issues as spatial data and attribute data or- ganization,technology of enhancing user experience,database connection pool were *** feasibility of the theories and methods were tested through the system.
＜正＞A method for efficiently transmitting location assistance information to an MS（mobile station）over a con- trol channel with minimal impact on the capacity of the control channel.A location server provides a di...
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＜正＞A method for efficiently transmitting location assistance information to an MS（mobile station）over a con- trol channel with minimal impact on the capacity of the control channel.A location server provides a difference be- tween satellite positions that have been computed using Almanac data and Ephemeris *** only the differ- ence between the positions and satellite clock corrections computed using the two different data *** total a- mount of information to be transmitted to a MS is significantly ***,by providing rate of change information,the method allows the location assistance information to remain valid for a relatively long time after it has been received by the MS.
As ubiquitous sensor networks(USN)technologies and its middleware are still at its early stages,the system of the USN relies on the middleware and *** past sensor networks are assumed to be designed for specific appli...
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As ubiquitous sensor networks(USN)technologies and its middleware are still at its early stages,the system of the USN relies on the middleware and *** past sensor networks are assumed to be designed for specific appli- cations,having data communication protocols tightly coupled to *** avoid these problems,several kinds of USN middleware have been researched and ***,most middleware of USN are still restricted by its own in- frastructure so *** paper proposes appropriate 3 tier Smart Middleware system(3SMS)for USN.
the Open Service Gateway Initiative(OSGi)has played an important role in ubiquitous environments that support interoperability among embedded devices,such as home appliances and network ***,the OSGi does not have a co...
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the Open Service Gateway Initiative(OSGi)has played an important role in ubiquitous environments that support interoperability among embedded devices,such as home appliances and network ***,the OSGi does not have a common event mechanism yet,and it is difficult to communicate among services *** the present work,a common event manager,Aspect-Oriented Event Manager(AOEM),was designed on an OSGi *** sup- ports services to generate and provide notification of *** paper presents the implementation of AOEM as an OSGi bundle with *** experiment on transferring between device service and application service demonstrate that AO- EM provides good abstraction of the services and convenience.
Withthe development of location technologies,advanced LBS-based ITS increasingly requires the capability of da- tabase technologies to manage the continuously arrived vehicles’ location,traffic jam and other interre...
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Withthe development of location technologies,advanced LBS-based ITS increasingly requires the capability of da- tabase technologies to manage the continuously arrived vehicles’ location,traffic jam and other interrelated information of large amounts of traffic in the following *** some burst arrival stream data will challenge the real-timo performance and the allocation of limited ***,choosing a desirable database operator scheduling strategy can significantly improve the performance of the *** path capability strategy was chosen and improved as ITS operator scheduling strategy to meet the real-timo response and the minimal memory requirement of the system.
Withthe development of the wireless network technology,the wireless band becomes more and more wide,and the development of the microelec-tronic technology has also improved the computati-onal speed and memory capacit...
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Withthe development of the wireless network technology,the wireless band becomes more and more wide,and the development of the microelec-tronic technology has also improved the computati-onal speed and memory capacity of the mobile *** brought the infinite prospects for the wireless mobile *** security is key to lau- nching mobile *** key infrastructure(PKI)can satisfy mobile e-business security's *** suitable asymmetrical encryption and signature algorithm were selected,and simply SSL so that PKI can provide better secure infor- mation between client and client server.
＜正＞Existing home devices in home network provides only independent services limited on a homogeneous protocol and/or do not fully support an intelligent service provided by cooperating among heterogeneous protocol ...
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＜正＞Existing home devices in home network provides only independent services limited on a homogeneous protocol and/or do not fully support an intelligent service provided by cooperating among heterogeneous protocol *** paper proposes an intelligent and integrated service binding architecture which allow the users to figure out the status of devices and to cooperate among home network devices regardless of supported protocols or operational characteristics.
the multi-agent negotiation test-bed proposed by Collins was *** utilizes publish/subscribe system, time-release cryptography and anonymous *** proposed protocol reduces DOS attack and avoids replay data attack by pro...
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the multi-agent negotiation test-bed proposed by Collins was *** utilizes publish/subscribe system, time-release cryptography and anonymous *** proposed protocol reduces DOS attack and avoids replay data attack by providing ticket token and deal sequence number to the *** it is proved that generating random number to the supplier by market is better than the supplier doing it by him in guaranteeing *** publishes an inter- polating polynomial for sharing the determination process *** avoids collusion between a customer and a certain suppli- *** to the comparison and analysis with other protocols,the proposed protocol shows good security and better ef- ficiency.
A number of IDSs have been proposed for a networked or distributed environment.A modified D-IDS using feder- ated peer-to-peer architecture,MCR(Multicast Reflector)and modified shaker protocol were *** suggested schem...
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A number of IDSs have been proposed for a networked or distributed environment.A modified D-IDS using feder- ated peer-to-peer architecture,MCR(Multicast Reflector)and modified shaker protocol were *** suggested scheme can be implemented easily and performs the information sharing between low-level IDS *** all users within a group monitor each other's,the common control server can perform detect intrusions with less cost and support the detection of the inside intruders.
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