Software-Defined Network （SDN） empowers the evolution of Internet with the OpenFlow, Network Virtualization and Service Slicing strategies. With the fast increasing requirements of Mobile Internet services, the Inte...Software-Defined Network （SDN） empowers the evolution of Internet with the OpenFlow, Network Virtualization and Service Slicing strategies. With the fast increasing requirements of Mobile Internet services, the Internet and Mobile Networks go to the convergence. Mobile Networks can also get benefits from the SDN evolution to fulfill the 5th Generation （5G） capacity booming. The article implements SDN into Frameless Network Architecture （FNA） for 5G Mobile Network evolution with proposed Mobile-oriented OpenFlow Protocol （MOFP）. The Control Plane/User Plane （CP/UP） separation and adaptation strategy is proposed to support the User-Centric scenario in FNA. The traditional Base Station is separated with Central Processing Entity （CPE） and Antenna Element （AE） to perform the OpenFlow and Network Virtualization. The AEs are released as new resources for serving users. The mobile-oriented Service Slicing with different Quality of Service （QoS） classification is proposed and Resource Pooling based Virtualized Radio Resource Management （VRRM） is optimized for the Service Slicing strategy with resource-limited feature in Mobile Networks. The capacity gains are provided to show the merits of SDN based FNA. And the MiniNet based Trial Network with Service Slicing is implemented with experimental results.展开更多
Background Cerebral sparganosis represents the most severe manifestation of sparganosis,with a relatively low global incidence.For cases of secondary epileptic seizures caused by sparganosis infection in the functiona...Background Cerebral sparganosis represents the most severe manifestation of sparganosis,with a relatively low global incidence.For cases of secondary epileptic seizures caused by sparganosis infection in the functional areas of the brain,what advanced neurosurgical techniques should be employed to precisely identify and excise the epi-leptic lesions in the deep functional areas of the brain,aiming to achieve maximal removal while minimising the risk of neurological deficits?This remains a current challenge for epilepsy surgeons.Case presentation A 24-year-old Chinese male was admitted to our hospital,presenting with a history of left limb twitching persisting for over a year.His main clinical symptoms presented twitching and numbness of his left limb without loss of consciousness.Under the premise of inappropriate anti-seizure treatment,recurrent epilepsy attacked persist.The patient’s diagnosis was considered as“space-occupying lesions in the several lobes of brain,secondary epilepsy”after comprehensive assessment and discussion.And experts considered that the patient’s space-occupying lesions in the right frontal and parietal lobes were highly suspected to be infected by parasites.This report delved into the application of neurosurgery robot-assisted frameless stereotaxic technology and intraopera-tive stereotactic electroencephalography(SEEG)monitoring technology to accurately locate and optimize removal of parasite-related epileptic lesions situated in functional areas of the brain.As a result,the patient had achieved seizure freedom,leaving no symptoms of neurological deficit.Conclusions With the highly integrated development of imaging technology,mechanical technology,computer control technology,and artificial intelligence,surgical robots are poised to play a larger role across various neurosur-gical specialties in the future.Considering benefits for patients and the promising application of this technology,its utilization holds significant value.展开更多
Objective To explore the safety and efficacy of frameless stereotactic brain biopsy.Methods Diagnostic accuracy was calculated by comparing biopsy diagnosis with definitive pathology in 62 patients who underwent frame...Objective To explore the safety and efficacy of frameless stereotactic brain biopsy.Methods Diagnostic accuracy was calculated by comparing biopsy diagnosis with definitive pathology in 62 patients who underwent frameless stereotactic brain biopsy between January 2008 and December 2010 in Xiamen University Southeast Hospital.Preoperative characteristics and histological diagnosis were reviewed and then information was analysed to identify factors associated with the biopsy not yielding a diagnosis and complications.Results Diagnostic yield was 93.5%.No differences were found between pathological diagnosis and frozen pathological diagnosis.The most common lesions were astrocytic lesions,included 16 cases of low-grade glioma and 12 cases of malignant glioma.Remote hemorrhage,metastasis,and lymphoma were following in incidence.Multiple brain lesions were found in 17 cases (27.4%).Eleven cases were frontal lesions (17.7%),8 were frontotemporal (12.9%),6 were frontoparietal (9.7%),and 5 each were temporal,parietal,and parietotemporal lesions (8.1%).Postoperative complications occurred in 21.0% of the patients after biopsies,including 10 haemorrhages (16.1%) and 3 temporary neurological deficits (1 epilepsy,1 headache,and 1 partial hemiparesis).No patient required operation for hematoma evacuation.Conclusion Frameless stereotactic biopsy is an effective and safe technique for histologic diagnosis of brain lesions,particularly for multifocal and frontal lesions.展开更多
目的探讨无框架立体定向手术治疗儿童脑性瘫痪的安全性与有效性。方法回顾性分析109例痉挛型儿童脑性瘫痪病儿的临床资料,均应用机器人辅助无框架立体定向核团毁损手术治疗;采用粗大运动功能测试量表(gross motor function measure-88,G...目的探讨无框架立体定向手术治疗儿童脑性瘫痪的安全性与有效性。方法回顾性分析109例痉挛型儿童脑性瘫痪病儿的临床资料,均应用机器人辅助无框架立体定向核团毁损手术治疗;采用粗大运动功能测试量表(gross motor function measure-88,GMFM-88)分别评估病儿术前、术后1周和3月的运动功能,并行统计学分析。结果术后CT复查显示:所有病儿毁损范围覆盖预定靶点。术后穿刺道少量出血1例,轻度发热1例,无严重手术并发症。术前、术后1周和术后3月GMFM-88评分分别为(49.9±23.5)、(52.6±24.0)、(63.8±22.4)分,与手术前比较,差异均具有统计学意义(P <0.01)。术后3个月,总有效率为98.2%,运动功能平均改善率为24.1%。结论采用机器人辅助无框架立体定向手术治疗儿童脑性瘫痪安全可靠,对改善病儿的运动功能具有积极意义。展开更多
The key technologies involved in the evolution of the Cloud-based Radio Access Network(C-RAN) are discussed in this paper. Taking the Frameless Network Architecture(FNA) as a starting point, a cell-lessbased network t...The key technologies involved in the evolution of the Cloud-based Radio Access Network(C-RAN) are discussed in this paper. Taking the Frameless Network Architecture(FNA) as a starting point, a cell-lessbased network topology for a multi-tier Heterogeneous Network(Het Net) and ultra-dense network is proposed. The FNA network topology modeling is researched with centralized processing and distributed antenna deployments. The Antenna Element(AE) is released as a new dimensional radio resource that is included in the centralized Radio Resource Management(RRM) processes. This contributes to the on-demand user-centric serving-set associations with cell-edge effect elimination. The Control Plane(CP) and User Plane(UP) separation and adaptation are introduced for energy efficiency improvements. The centralized RRM and different optimization goals are discussed for fully exploring the merits from the centralized computing of C-RAN. Considering the complexity, near-optimal approaches for specific users' Quality-of-Service(Qo S) requirements are addressed. Finally, based on the research highlighted above, the way forward of C-RAN evolution is discussed.展开更多
基金This material is supported by the National Natural Science Foundation of China under Grant No.61001116 and 61121001,Beijing Nova Programme No.Z131101000413030,the National Major Project No.2013ZX03003002 and Program for Changjiang Scholars and Innovative Research Team in University No.IRT1049
文摘Software-Defined Network （SDN） empowers the evolution of Internet with the OpenFlow, Network Virtualization and Service Slicing strategies. With the fast increasing requirements of Mobile Internet services, the Internet and Mobile Networks go to the convergence. Mobile Networks can also get benefits from the SDN evolution to fulfill the 5th Generation （5G） capacity booming. The article implements SDN into Frameless Network Architecture （FNA） for 5G Mobile Network evolution with proposed Mobile-oriented OpenFlow Protocol （MOFP）. The Control Plane/User Plane （CP/UP） separation and adaptation strategy is proposed to support the User-Centric scenario in FNA. The traditional Base Station is separated with Central Processing Entity （CPE） and Antenna Element （AE） to perform the OpenFlow and Network Virtualization. The AEs are released as new resources for serving users. The mobile-oriented Service Slicing with different Quality of Service （QoS） classification is proposed and Resource Pooling based Virtualized Radio Resource Management （VRRM） is optimized for the Service Slicing strategy with resource-limited feature in Mobile Networks. The capacity gains are provided to show the merits of SDN based FNA. And the MiniNet based Trial Network with Service Slicing is implemented with experimental results.
基金supported by Joint key project[grant numbers 2019LH01]Department of Science and Technology of Sichuan Province[grant numbers 22CXRC0178]+5 种基金Medical Innovation Project[grant numbers 21WQ040]Southwest Jiaotong University Medical and industrial Combination training special project[grant numbers 2682021ZTPY024]National Natural Science Foundation of China[grant numbers 81701283]Hospital Management Project of Western Command General Hospital[grant numbers 2021-XZYG-B22]Hospital Management Project of Western Command General Hospital[grant numbers 2021-XZYG-B21]Department of Science and Technology of Sichuan Province[grant numbers 2019YJ0274].
文摘Background Cerebral sparganosis represents the most severe manifestation of sparganosis,with a relatively low global incidence.For cases of secondary epileptic seizures caused by sparganosis infection in the functional areas of the brain,what advanced neurosurgical techniques should be employed to precisely identify and excise the epi-leptic lesions in the deep functional areas of the brain,aiming to achieve maximal removal while minimising the risk of neurological deficits?This remains a current challenge for epilepsy surgeons.Case presentation A 24-year-old Chinese male was admitted to our hospital,presenting with a history of left limb twitching persisting for over a year.His main clinical symptoms presented twitching and numbness of his left limb without loss of consciousness.Under the premise of inappropriate anti-seizure treatment,recurrent epilepsy attacked persist.The patient’s diagnosis was considered as“space-occupying lesions in the several lobes of brain,secondary epilepsy”after comprehensive assessment and discussion.And experts considered that the patient’s space-occupying lesions in the right frontal and parietal lobes were highly suspected to be infected by parasites.This report delved into the application of neurosurgery robot-assisted frameless stereotaxic technology and intraopera-tive stereotactic electroencephalography(SEEG)monitoring technology to accurately locate and optimize removal of parasite-related epileptic lesions situated in functional areas of the brain.As a result,the patient had achieved seizure freedom,leaving no symptoms of neurological deficit.Conclusions With the highly integrated development of imaging technology,mechanical technology,computer control technology,and artificial intelligence,surgical robots are poised to play a larger role across various neurosur-gical specialties in the future.Considering benefits for patients and the promising application of this technology,its utilization holds significant value.
文摘Objective To explore the safety and efficacy of frameless stereotactic brain biopsy.Methods Diagnostic accuracy was calculated by comparing biopsy diagnosis with definitive pathology in 62 patients who underwent frameless stereotactic brain biopsy between January 2008 and December 2010 in Xiamen University Southeast Hospital.Preoperative characteristics and histological diagnosis were reviewed and then information was analysed to identify factors associated with the biopsy not yielding a diagnosis and complications.Results Diagnostic yield was 93.5%.No differences were found between pathological diagnosis and frozen pathological diagnosis.The most common lesions were astrocytic lesions,included 16 cases of low-grade glioma and 12 cases of malignant glioma.Remote hemorrhage,metastasis,and lymphoma were following in incidence.Multiple brain lesions were found in 17 cases (27.4%).Eleven cases were frontal lesions (17.7%),8 were frontotemporal (12.9%),6 were frontoparietal (9.7%),and 5 each were temporal,parietal,and parietotemporal lesions (8.1%).Postoperative complications occurred in 21.0% of the patients after biopsies,including 10 haemorrhages (16.1%) and 3 temporary neurological deficits (1 epilepsy,1 headache,and 1 partial hemiparesis).No patient required operation for hematoma evacuation.Conclusion Frameless stereotactic biopsy is an effective and safe technique for histologic diagnosis of brain lesions,particularly for multifocal and frontal lesions.
文摘目的探讨无框架立体定向手术治疗儿童脑性瘫痪的安全性与有效性。方法回顾性分析109例痉挛型儿童脑性瘫痪病儿的临床资料,均应用机器人辅助无框架立体定向核团毁损手术治疗;采用粗大运动功能测试量表(gross motor function measure-88,GMFM-88)分别评估病儿术前、术后1周和3月的运动功能,并行统计学分析。结果术后CT复查显示:所有病儿毁损范围覆盖预定靶点。术后穿刺道少量出血1例,轻度发热1例,无严重手术并发症。术前、术后1周和术后3月GMFM-88评分分别为(49.9±23.5)、(52.6±24.0)、(63.8±22.4)分,与手术前比较,差异均具有统计学意义(P <0.01)。术后3个月,总有效率为98.2%,运动功能平均改善率为24.1%。结论采用机器人辅助无框架立体定向手术治疗儿童脑性瘫痪安全可靠,对改善病儿的运动功能具有积极意义。
基金supported by the National High Technology Research and Development Program of China No.2014AA01A701Nature and Science Foundation of China under Grants No.61471068,61421061+2 种基金Beijing Nova Programme No.Z131101000413030International Collaboration Project No.2015DFT10160National Major Project No.2016ZX03001009-003
文摘The key technologies involved in the evolution of the Cloud-based Radio Access Network(C-RAN) are discussed in this paper. Taking the Frameless Network Architecture(FNA) as a starting point, a cell-lessbased network topology for a multi-tier Heterogeneous Network(Het Net) and ultra-dense network is proposed. The FNA network topology modeling is researched with centralized processing and distributed antenna deployments. The Antenna Element(AE) is released as a new dimensional radio resource that is included in the centralized Radio Resource Management(RRM) processes. This contributes to the on-demand user-centric serving-set associations with cell-edge effect elimination. The Control Plane(CP) and User Plane(UP) separation and adaptation are introduced for energy efficiency improvements. The centralized RRM and different optimization goals are discussed for fully exploring the merits from the centralized computing of C-RAN. Considering the complexity, near-optimal approaches for specific users' Quality-of-Service(Qo S) requirements are addressed. Finally, based on the research highlighted above, the way forward of C-RAN evolution is discussed.
