Three-dimensional virtual operations can facilitate complicated surgical planning for the treatment of patients with jaw deformities associated with facial asymmetry: a case report

This article describes a case we experienced in which good postsurgical facial profiles were obtained for a patient with jaw deformities associated with facial asymmetry,by implementing surgical planning with SimPlant OMS.Using this method,we conducted LF1 osteotomy,intraoral vertical ramus osteotomy（IVRO）,sagittal split ramus osteotomy（SSRO）,mandibular constriction and mandibular border genioplasty.Not only did we obtain a class I occlusal relationship,but the complicated surgery also improved the asymmetry of the frontal view,as well as of the profile view,of the patient.The virtual operation using three-dimensional computed tomography（3D-CT）could be especially useful for the treatment of patients with jaw deformities associated with facial asymmetry.

The Architecture and Operation Mode of Virtual Supply Chain

Virtual supply chain, as a modern collaborative mode of enterprises, is important to decrease the cost and improve the efficiency and the quality of supply chains, and to satisfy customers. Based on the analysis of the conception and characteristics of the virtual supply chain, the architecture of virtual supply chain is built, and corresponding objects, tasks, information and technologies are described. Three operation modes-Order-driven, manufacturer-centered, and retailer-centered are researched. As a case, virtual supply chain is applied in the electronic commerce and networked customization system of ceramic products.

WEB-BASED VIRTUAL CNC MACHINE MODELING AND OPERATION

A CNC simulation system based on intemet for operation training of manufacturing facility and manufacturing process simulation is proposed. Firstly, the system framework and a rapid modeling method of CNC machine tool are studied under the virtual environment based on PolyTrans and CAD software. Then, a new method is proposed to enhance and expand the interactive ability of virtual reality modeling language（VRML） by attaining communication among VRML, JavaApplet, JavaScript and Html so as to realize the virtual operation for CNC machine tool. Moreover, the algorithm of material removed simulation based on VRML Z-map is presented. The advantages of this algorithm include less memory requirement and much higher computation. Lastly, the CNC milling machine is taken as an illustrative example for the prototype development in order to validate the feasibility of the proposed approach.

Assessing performance of augmented reality-based neurosurgical training

This paper presents a novel augmented reality(AR)-based neurosurgical training simulator which provides a very natural way for surgeons to learn neurosurgical skills.Surgical simulation with bimanual haptic interaction is integrated in this work to provide a simulated environment for users to achieve holographic guidance for pre-operative training.To achieve the AR guidance,the simulator should precisely overlay the 3D anatomical information of the hidden target organs in the patients in real surgery.In this regard,the patient-specific anatomy structures are reconstructed from segmented brain magnetic resonance imaging.We propose a registration method for precise mapping of the virtual and real information.In addition,the simulator provides bimanual haptic interaction in a holographic environment to mimic real brain tumor resection.In this study,we conduct AR-based guidance validation and a user study on the developed simulator,which demonstrate the high accuracy of our AR-based neurosurgery simulator,as well as the AR guidance mode’s potential to improve neurosurgery by simplifying the operation,reducing the difficulty of the operation,shortening the operation time,and increasing the precision of the operation.

A Case Study of Business Borderless Development in Internet Age

A firm may expand in two ways： by tangible expansion through an increase in the scale of the physical company, or by intangible expansion, an optimization process drawing on both the firm＇s physical entity as well as virtual resources, producing borderless growth. We take a case study approach to explore borderless development at business, managerial, and operational levels and to study four facilitators of borderless development： information technology, the virtual world, virtual operations, and concentration on core business. We conclude that firms may achieve global dominance in their area of core competency through borderless development.

Research on the Construction of Agricultural Product Virtual Logistics Enterprise

With the development that the demand for agricultural products' consumer market is gradually toward to the direction of complication, the existing agricultural logistics organizational model cannot adapt to the characteristics of agricultural product logistics and the changes in the consumer demand. According to the analysis of virtual operation trend of agricultural product logistics enterprise, this paper expatiates the concept and characteristics of agricultural product virtual logistics enterprise(APVLE) and proposes four steps to build an APVLE, including the analysis of key elements about APVLE, the identification about agricultural product logistics business, the project decomposition of APVLE and the partner selection in APVLE.

Research on Strategic Cooperation Between China Post and Telecoms

Firstly several aspects of the strategic cooperation between China Post and Telecoms are described in succession, which includes the necessity, the probability, the significance and the detailed contents of the strategic cooperation. With that the way to select strategic partners and the frame of the cooperated business are proposed. Lastly the obstacles of the cooperation and accordingly the solution of them are discussed.