There are many difficulties in the operation training of certain type artillery radar, such as training field is limited, radar loss is serious, training outlay is expensive. To resolve the problem, a virtual scene of...
详细信息
ISBN:
(纸本)9789881824257
There are many difficulties in the operation training of certain type artillery radar, such as training field is limited, radar loss is serious, training outlay is expensive. To resolve the problem, a virtual scene of certain type artillery radar was realized based on VRML and java. The solution to a series of key techniques is discussed such as the framework of virtual scene, building of virtual scene. This paper studies the java technology with the research in depth in the usage of the technology of java realizing interactivity in virtual environment based on VRML and fashion that realizing interactivity of virtual object and user. The results show that the simulation system simulates the operation process of certain type artillery radar livingly and can meet the requirement of real time simulation.
There are many difficulties in the operation training of certain type artillery radar, such as training field is limited, radar loss is serious, training outlay is expensive. To resolve the problem, a virtual scene of...
详细信息
There are many difficulties in the operation training of certain type artillery radar, such as training field is limited, radar loss is serious, training outlay is expensive. To resolve the problem, a virtual scene of certain type artillery radar was realized based on VRML and java. The solution to a series of key techniques is discussed such as the framework of virtual scene, building of virtual scene. This paper studies the java technology with the research in depth in the usage of the technology of java realizing interactivity in virtual environment based on VRML and fashion that realizing interactivity of virtual object and user. The results show that the simulation system simulates the operation process of certain type artillery radar livingly and can meet the requirement of real time simulation.
Several in-house developed descriptors and our in-house docking tool ActDock were compared with virtualscreening on the data set of useful decoys (DUD). The results were compared with the chemical fingerprint descript...
详细信息
Several in-house developed descriptors and our in-house docking tool ActDock were compared with virtualscreening on the data set of useful decoys (DUD). The results were compared with the chemical fingerprint descriptor from ChemAxon and with the docking results of the original DUD publication. The DUD is the first published data set providing active molecules, decoys, and references for crystal structures of ligand-target complexes. The DUD was designed for the purpose of evaluating docking programs. It contains 2950 active compounds against a total of 40 target proteins. Furthermore, for every ligand the data set contains 36 structurally dissimilar decoy compounds with similar physicochemical properties. We extracted the ligands from the target proteins to extend the applicability of the data set to include ligand based virtual screening. From the 40 target proteins, 37 contained ligands that we used as query molecules for virtual screening evaluation. With this data set a large comparison was done between four different chemical fingerprints, a topological pharmacophore descriptor, the Flexophore descriptor, and ActDock. The Actelion docking tool relies on a MM2 forcefield and a pharmacophore point interaction statistic for scoring;the details are described in this publication. In terms of enrichment rates the chemical fingerprint descriptors performed better than the Flexophore and the docking tool. After removing molecules chemically similar to the query molecules the Flexophore descriptor outperformed the chemical descriptors and the topological pharmacophore descriptors. With the similarity matrix calculations used in this study it was shown that the Flexophore is well suited to find new chemical entities via "scaffold hopping". The Flexophore descriptor can be explored with a java applet at http://*** in the submenu Tools -> Flexophore. Its usage is free of charge and does not require registration.
Pedagogically well-designed interactive learning objects (LOs) can help students to better understand complex concepts and processes. Such LOs can stimulate higher-level cognitive skills by involving students in inter...
详细信息
ISBN:
(纸本)9781424433612
Pedagogically well-designed interactive learning objects (LOs) can help students to better understand complex concepts and processes. Such LOs can stimulate higher-level cognitive skills by involving students in interactive learning activities. The design and implementation of interactive LOs is, however, time-consuming and requires special skills. LOs are also often localized and tightly connected with particular educational scenarios, which strongly limits their reuse in different contexts. In this article, we present a methodology of developing and reusing interactive learning objects relying on a heuristic principle. It suggests keeping content and educational context separate at design time and connecting both facets of LOs only at reuse time. We illustrate this principle both for java applets and for interactive Flash animations. Building on top of Adobe's Flex technology, we also suggest to separate the design of generic Flash animation templates from the pedagogically motivated interaction logics. Three simple examples illustrate our method.
This paper describes a web-based combined laboratory for a 8051 microcontroller-related experiment which is, composed of a virtual lab and a real time remote laboratory Authorized users are allowed to have access to b...
详细信息
ISBN:
(纸本)9783642036965
This paper describes a web-based combined laboratory for a 8051 microcontroller-related experiment which is, composed of a virtual lab and a real time remote laboratory Authorized users are allowed to have access to both labs Using a web browser. The virtual laboratory cooperates with the remote laboratory to help learners easily understand the principal concept,;and the process of complex experimental operations about the 8051 microcontroller. The former is implemented by java applets and Flash animations, and the latter network technologies Such as web-based compilation and socket communication, which enables remote experimental devices to be controlled by local learners. compensating for the lack of reality in the virtual experiment. The proposed laboratory provides learners with almost all the same advantages as a real lab environment.
VRML is mainly used to make 3D user interface and to control dynamic display in real-time state. java is responsible for correspondence between Web browser and VRML scene, also for linkage with other information syste...
详细信息
ISBN:
(纸本)9780769535432
VRML is mainly used to make 3D user interface and to control dynamic display in real-time state. java is responsible for correspondence between Web browser and VRML scene, also for linkage with other information system section. Paper first introduced default VRML's invisible 3D viewer's avatar modeling. Then mainly discussed VRML and java combination, including VRML's deficiency in creating real-time data input and output for peripheral equipment;adopting EAI to create java applet for the purpose of real-time data correspondence between external application program and VRML scene nodes. EAI technology strategies, EAI operation mechanism, EAI four kinds of possible accessing type and its event transmit mechanism etc. contents are detailed formulated. Finally paper described a typical VRML avatar PROTO definition specification and its concrete avatar citation application example.
暂无评论