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Clinical prediction of insufficient vaults after implantable collamer lens implantation
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作者 Jun Zhu Dan Cheng +3 位作者 Xue-Ying Zhu Fen-Fen Li Ye Yang Yu-Feng Ye 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第7期1300-1306,共7页
AIM:To determine the factors related to preoperative ocular characters that are predictive of insufficient vault(<250μm)after implantable collamer lens(ICL V4c;STAAR Surgical)implantation.METHODS:The participants ... AIM:To determine the factors related to preoperative ocular characters that are predictive of insufficient vault(<250μm)after implantable collamer lens(ICL V4c;STAAR Surgical)implantation.METHODS:The participants underwent ICL surgery and were divided into the low(<250μm)and normal(250-1000μm)vault groups based on the postoperative vault at 3mo.The preoperative biometric parameters and clinical outcomes were compared between the two groups.The relationship between the 3-month vault values and preoperative ocular parameters were evaluated by Generalized estimating equations.RESULTS:Sixteen(23 eyes)and 36 patients(63 eyes)were in the low and normal vault groups,respectively.All implantation procedures were uneventful with no cataract formation in the early postoperative period.The sulcusto-sulcus lens rise(STSL)and iris ciliary angle(ICA)were correlated with vault at 3mo after surgery.Every 0.1 mm increase in STSL was associated with 38.9μm decrease in the postoperative 3-month vault.A rise of 1 degree in ICA is associated with a reduction of 4μm in vault.CONCLUSION:Eyes with a narrow ciliary sulcus are associated with a higher rate of low vault after ICL implantation,suggesting a need for adjustments to the ICL size in these patients.Evaluating the characteristics of the ciliary sulcus contributes valuable information to predict low vault after surgery. 展开更多
关键词 insufficient vault implantable collamer lens ciliary body posterior chamber
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Vault predicting after implantable collamer lens implantation using random forest network based on different features in ultrasound biomicroscopy images 被引量:2
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作者 Bin Fang Qiu-Jian Zhu +1 位作者 Hui Yang Li-Cheng Fan 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第10期1561-1567,共7页
AIM:To analyze ultrasound biomicroscopy(UBM)images using random forest network to find new features to make predictions about vault after implantable collamer lens(ICL)implantation.METHODS:A total of 450 UBM images we... AIM:To analyze ultrasound biomicroscopy(UBM)images using random forest network to find new features to make predictions about vault after implantable collamer lens(ICL)implantation.METHODS:A total of 450 UBM images were collected from the Lixiang Eye Hospital to provide the patient’s preoperative parameters as well as the vault of the ICL after implantation.The vault was set as the prediction target,and the input elements were mainly ciliary sulcus shape parameters,which included 6 angular parameters,2 area parameters,and 2 parameters,distance between ciliary sulci,and anterior chamber height.A random forest regression model was applied to predict the vault,with the number of base estimators(n_estimators)of 2000,the maximum tree depth(max_depth)of 17,the number of tree features(max_features)of Auto,and the random state(random_state)of 40.0.RESULTS:Among the parameters selected in this study,the distance between ciliary sulci had a greater importance proportion,reaching 52%before parameter optimization is performed,and other features had less influence,with an importance proportion of about 5%.The importance of the distance between the ciliary sulci increased to 53% after parameter optimization,and the importance of angle 3 and area 1 increased to 5% and 8%respectively,while the importance of the other parameters remained unchanged,and the distance between the ciliary sulci was considered the most important feature.Other features,although they accounted for a relatively small proportion,also had an impact on the vault prediction.After parameter optimization,the best prediction results were obtained,with a predicted mean value of 763.688μm and an actual mean value of 776.9304μm.The R²was 0.4456 and the root mean square error was 201.5166.CONCLUSION:A study based on UBM images using random forest network can be performed for prediction of the vault after ICL implantation and can provide some reference for ICL size selection. 展开更多
关键词 random forest network ultrasound biomicroscopy images vault prediction implantable collamer lens
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Application of femtosecond laser in assisted cataract after ICL implantation with different vault
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作者 Yan Li Cong-Yi Wang +2 位作者 Li-An Wu Bo Ma Guan-Xing Dang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第2期320-324,共5页
Dear Editor,We are writing this letter to report two unusual cases of femtosecond laser-assisted cataract surgery(FLACS)in two ICL-implanted patients with significant different vault.FLACS has been confirmed by accumu... Dear Editor,We are writing this letter to report two unusual cases of femtosecond laser-assisted cataract surgery(FLACS)in two ICL-implanted patients with significant different vault.FLACS has been confirmed by accumulating evidence to improve the safety and precision of surgery from common cases to complicated cases in treating cataracts[1-3].Implantable collamer lens(ICL)implantation possesses a good performance in its predictability,reversibility,and the rapid visual recovery. 展开更多
关键词 laser vault FEMTOSECOND
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Bone Defect of the Cranial Vault: Difficulty of the Diagnostic about a Case, and Revew of Literature
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作者 Broalet Maman You Espérance Konan Landry +2 位作者 Moulot Martial Olivier Esso Didier Bankole Sanni 《Open Journal of Modern Neurosurgery》 2023年第1期33-40,共8页
The bone defects of the cranial vault encompassed rare malformations including acalvaria, hypocalvaria, acrania, hypocrania, anencephaly and exencephaly. They are also described in some pathological entities such as a... The bone defects of the cranial vault encompassed rare malformations including acalvaria, hypocalvaria, acrania, hypocrania, anencephaly and exencephaly. They are also described in some pathological entities such as aplasia cutis congenita of the scalp. We report an unusual case of cephalic malformation which combine defects of the skin, the dura mater, and the bones of the vault, with a malformation of the central nervous system. This unique case emphasizes a problem of nosological definition between the terms mentioned above. acalvaria, the acrania, the hypocalvaria and the aplasia cutis congenita. Thus, herein, we proceed to a literature review of bone defects of the skull and their differential diagnosis. 展开更多
关键词 Cranial vault Defects Acalvaria Hypocalvaria Aplasia Cutis Congenita Congenital Malformation Diagnosis
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改进的可撤销指纹Fuzzy Vault方案 被引量:5
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作者 张镕麟 刘而云 +1 位作者 赵恒 庞辽军 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2011年第4期173-180,共8页
Fuzzy Vault系统是生物特征加密(Biometric Encryption,BE)领域中广泛应用的密钥绑定框架,适用于集合特征(例如指纹细节点)与密钥的绑定.然而,Vault模板中包含了真实指纹细节点特征,攻击者可以从多个发布的Vault模板中获取真实指纹信息... Fuzzy Vault系统是生物特征加密(Biometric Encryption,BE)领域中广泛应用的密钥绑定框架,适用于集合特征(例如指纹细节点)与密钥的绑定.然而,Vault模板中包含了真实指纹细节点特征,攻击者可以从多个发布的Vault模板中获取真实指纹信息,因而严重威胁到用户的隐私和密钥安全.笔者提出一种改进的可撤销指纹Fuzzy Vault方案.首先,基于口令构造一个不可逆变换函数,应用该变换函数对细节点特征进行变换,然后使用变换后的细节点输入Fuzzy Vault系统.攻击者即使得到多个应用系统上的Vault也不能获得原始指纹细节点特征,且用户可以通过随时更换口令来发布新的Vault模板.在FVC2002 DB2上的实验表明,所提出的方案能有效降低交叉匹配带来的安全隐患,提高系统安全性. 展开更多
关键词 可撤销生物特征 双因子认证 FUZZY vault 生物特征加密 指纹识别
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基于指纹的可撤销Fuzzy vault方案 被引量:2
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作者 冯全 肖媛媛 +1 位作者 苏菲 蔡安妮 《计算机应用》 CSCD 北大核心 2008年第7期1816-1818,共3页
Fuzzy vault是一种用生物特征保护密钥的加密框架,其主要缺点在于攻击者可以通过交叉比较同一用户的不同vault来获得生物模板的准确信息,从而可以破解vault。提出了一种使用基于指纹细节点的可撤销的变换模板作为生成vault的模板,保护... Fuzzy vault是一种用生物特征保护密钥的加密框架,其主要缺点在于攻击者可以通过交叉比较同一用户的不同vault来获得生物模板的准确信息,从而可以破解vault。提出了一种使用基于指纹细节点的可撤销的变换模板作为生成vault的模板,保护不同密钥时采用不同变换模板,从而解决了这个问题。采用以巴特沃斯低通滤波器为核的函数组作为生成可撤销模板的变换函数。此外还使用了用户口令加密vault,从而进一步增强了被保护密钥的安全性。 展开更多
关键词 FUZZY vault 可撤销模板 指纹细节点 生物加密
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GRS解码在Fuzzy Vault中应用 被引量:2
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作者 冯全 苏菲 蔡安妮 《计算机工程与应用》 CSCD 北大核心 2008年第13期114-116,共3页
将指纹细节点和密钥进行绑定,并用fuzzy vault方法对结果进行保护。在密钥恢复时,用GRS解码进行纠错处理。对GRS的传统解码和表单解码的效果进行了比较,实验表明表单解码比传统解码的密钥恢复效果更好。
关键词 GRS码 FUZZY vault 表单解码 生物加密
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基于Fuzzy Vault方案的指纹细节特征加密 被引量:3
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作者 邓见光 袁华强 《计算机工程与设计》 CSCD 北大核心 2010年第4期720-723,共4页
指出了现有指纹Fuzzy Vault方法用于加密长度较短的密钥时安全性不足的问题,并基于Fuzzy Vault方案,提出了一种指纹细节特征加密方法。首先指定Fuzzy Vault编码多项式的幂次,并根据指定幂次对加密密钥进行处理和隐藏。通过这种处理,避... 指出了现有指纹Fuzzy Vault方法用于加密长度较短的密钥时安全性不足的问题,并基于Fuzzy Vault方案,提出了一种指纹细节特征加密方法。首先指定Fuzzy Vault编码多项式的幂次,并根据指定幂次对加密密钥进行处理和隐藏。通过这种处理,避开了现有方法中密钥长度决定Fuzzy Vault编码多项式幂次的弊端,解除了现有方法加密长度较短的密钥时所存在的安全隐患。 展开更多
关键词 生物特征 加密系统 Fuzzy vault 指纹细节点 编码多项式
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指纹Fuzzy Vault加密方案 被引量:1
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作者 邓见光 袁华强 《科技创新导报》 2009年第12期248-250,共3页
本文基于Fuzzy Vault方案提出了一种使用指纹细节点对系统密钥进行加密的方法,该方法将指纹细节特征点与系统密钥很好地结合在一起,有效地解决了传统加密方法存在的不足。
关键词 生物特征加密 FUZZY vault 指纹细节点
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基于B样条曲线的指纹Fuzzy Vault对齐方法 被引量:1
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作者 杨汉辉 韩国强 袁华强 《微计算机信息》 2010年第4期230-232,共3页
指纹设备采集到的指纹图像由于不能用统一的参照表示指纹细节点的坐标,因此,同一枚指纹分别在录入和注册时得到的指纹细节点需要对齐。本文采用指纹纹线作为指纹Fuzzy vault对齐的方法,在目标纹线上提取B样条控制点,用这些控制点数据与... 指纹设备采集到的指纹图像由于不能用统一的参照表示指纹细节点的坐标,因此,同一枚指纹分别在录入和注册时得到的指纹细节点需要对齐。本文采用指纹纹线作为指纹Fuzzy vault对齐的方法,在目标纹线上提取B样条控制点,用这些控制点数据与纹线的距离作为辅助数据来对齐指纹模板。研究分析表明这种方法不会泄露指纹细节点的任何信息。实验结果证明,这种方法具有很好的实时性并能提高指纹Fuzzy vault的配准率。 展开更多
关键词 指纹细节点对齐 指纹Fuzzy vault B样条曲线控制点
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Autodesk Vault在上海天文馆项目管理中的应用 被引量:7
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作者 李良 李岩松 郑威 《土木建筑工程信息技术》 2015年第6期61-66,共6页
Autodesk Vault是一个数据管理系统,可以管理任何类型的工程文件,本单位通过建立Autodesk Vault数据管理平台,并加以应用,寻找出一套适合自身的体系,解决了项目管理中出现的各种问题,同时采用低成本的向日葵3.0 VPN实现异地访问Vault服... Autodesk Vault是一个数据管理系统,可以管理任何类型的工程文件,本单位通过建立Autodesk Vault数据管理平台,并加以应用,寻找出一套适合自身的体系,解决了项目管理中出现的各种问题,同时采用低成本的向日葵3.0 VPN实现异地访问Vault服务端数据。由于数据进行了集中的管理和控制,使得数据的安全性得到了保证,模型整合的效率得到了极大地提高,同时为项目后期的运营和维护提供了数据的支撑和保障。 展开更多
关键词 AUTODESK vault 向日葵VPN 数据管理系统 数据安全性
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一种改进的指纹Fuzzy Vault加密方案 被引量:5
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作者 谭台哲 章红燕 《计算机应用研究》 CSCD 北大核心 2012年第6期2208-2210,共3页
为了克服传统指纹Fuzzy Vault算法在应用上的不足,提出了一种改进的Fuzzy Vault算法。主要采用一种新的多项式构造函数的方法来实现待保护密钥和指纹细节特征点的绑定,进而解决了传统Fuzzy Vault算法中密钥长度决定解码时需要匹配细节... 为了克服传统指纹Fuzzy Vault算法在应用上的不足,提出了一种改进的Fuzzy Vault算法。主要采用一种新的多项式构造函数的方法来实现待保护密钥和指纹细节特征点的绑定,进而解决了传统Fuzzy Vault算法中密钥长度决定解码时需要匹配细节点个数的问题。实验结果表明,此方法进一步增强了算法的安全性和灵活性。 展开更多
关键词 模糊密钥绑定 生物特征加密 密钥绑定 生物特征 指纹细节点
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FINGERPRINT-BASED KEY BINDING/RECOVERING SCHEME BASED ON FUZZY VAULT 被引量:4
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作者 Feng Quan Su Fei Cai Anni 《Journal of Electronics(China)》 2008年第3期415-421,共7页
This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are ... This letter proposes fingerprint-based key binding/recovering with fuzzy vault. Fingerprint minutiae data and the cryptographic key are merged together by a multivariable linear function. First, the minutiae data are bound by a set of random data through the linear function. The number of the function’s variables is determined by the required number of matched minutiae. Then, a new key de- rived from the random data is used to encrypt the cryptographic key. Lastly, the binding data are protected using fuzzy vault scheme. The proposed scheme provides the system with the flexibility to use changeable number of minutiae to bind/recover the protected key and a unified method regardless of the length of the key. 展开更多
关键词 BINDING Key recovering Fingerprint minutiae Fuzzy vault Multivariable linear function
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Auto-Aligned Sharing Fuzzy Fingerprint Vault 被引量:1
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作者 方恩博 韩彩芸 刘嘉勇 《China Communications》 SCIE CSCD 2013年第10期145-154,共10页
Recently, a cryptographic construct,called fuzzy vault, has been proposed for crypto-biometric systems, and some implementations for fingerprint have been reported to protect the stored fingerprint template by hiding ... Recently, a cryptographic construct,called fuzzy vault, has been proposed for crypto-biometric systems, and some implementations for fingerprint have been reported to protect the stored fingerprint template by hiding the fingerprint features. However, all previous studies assumed that fingerprint features were pre-aligned, and automatic alignment in the fuzzy vault domain is a challenging issue.In this paper, an auto-aligned sharing fuzzy fingerprint vault based on a geometric hashing technique is proposed to address automatic alignment in the multiple-control fuzzy vault with a compartmented structure. The vulnerability analysis and experimental results indicate that, compared with original multiplecontrol fuzzy vault, the auto-aligned sharing fuzzy fingerprint vault can improve the security of the system. 展开更多
关键词 biometrics geometric hashing FINGERPRINT auto-aligned sharing fuzzy finger- print vault
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The Difference in Gait Regulation Strategies Between Successful and Failed Pole Vault Performance 被引量:2
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作者 Yuji Tamura Hiroyuki Nunome Sachio Usui 《Journal of Sports Science》 2017年第4期211-214,共4页
This study aimed to investigate the difference in gait regulation strategy of pole vault approach runs between successful and failed trials. Five male junior pole vaulters completed full vaulting to 90%-95% personal b... This study aimed to investigate the difference in gait regulation strategy of pole vault approach runs between successful and failed trials. Five male junior pole vaulters completed full vaulting to 90%-95% personal best height. These trials were categorized into successful and failed trials. Step length and the distance from toe to the planting box were obtained using a two dimensional direct linear transformation procedure. In successful trials, standard deviations of the toe-box distance (SDTB) at the last step and take-off of were significantly smaller than those of failed trials (P 〈 0.05). We observed a clear difference in gait regulation strategy between successful and failed trials, thereby suggesting that to minimize the fluctuations of the toe-box distance immediately before the take-off is a key gait regulation strategy for successful pole vault performance. 展开更多
关键词 Approach run adjustment ACCURATE pole vault.
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Vault Hematoma after Vaginal Hysterectomy: An Invariable Complication 被引量:1
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作者 Laila Yahya A. Alhubaishi Atif Bashir Fazari 《Open Journal of Obstetrics and Gynecology》 2019年第5期578-581,共4页
Hysterectomy is common major operation performed in gynecological field practice after Caesarean section. Vaginal hysterectomy is preferred surgery for uterovaginal prolapsed. Vaginal hysterectomy has advantages over ... Hysterectomy is common major operation performed in gynecological field practice after Caesarean section. Vaginal hysterectomy is preferred surgery for uterovaginal prolapsed. Vaginal hysterectomy has advantages over abdominal hysterectomy. Post hysterectomy hematomas are responsible for serious morbidity. Ultrasound is an accurate diagnostic tool and so Computed tomography. Conservative management, analgesia and antibiotics will work in small hematoma, but the significant sized hematoma needs surgical drainage and the infected hematoma. Refinement in surgical techniques is recommended to minimize the formation vaginal vault hematomas after vaginal hysterectomy. 展开更多
关键词 vault HEMATOMA VAGINAL HYSTERECTOMY Surgical ANATOMY
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基于Autodesk Vault的一个数据管理应用实例 被引量:4
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作者 李雷 《CAD/CAM与制造业信息化》 2013年第12期96-98,共3页
Autodesk Vault是一款数据管理软件,可以管理任何类型的工程文件,尤其是Autodesk公司的文件。本单位通过建立Autodesk Vault数据管理平台,并加以应用,寻找出一套适合自身的体系,解决了设计文件的管理,项目协同设计,产品系列化中产生的... Autodesk Vault是一款数据管理软件,可以管理任何类型的工程文件,尤其是Autodesk公司的文件。本单位通过建立Autodesk Vault数据管理平台,并加以应用,寻找出一套适合自身的体系,解决了设计文件的管理,项目协同设计,产品系列化中产生的设计借用等问题。本文对该软件在本单位应用的实践经验和使用技巧做了详细阐述。 展开更多
关键词 AUTODESK vault INVENTOR 工程文件管理 协同设计 应用实例
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Autodesk Vault在变压器三维设计中的应用
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作者 赵艇 《机械制造》 2007年第4期69-70,共2页
1变压器三维设计流程及面临的问题大型变压器结构复杂,零部件种类繁多,在设计时面临的主要问题有:1)三维的电缆布线;2)钣金件展开;3)管路设计;4)三维图的示意表达;5)不按比例出图。
关键词 大型变压器 AUTODESK 三维设计 vault 应用 钣金件展开 设计流程 电缆布线
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基于Inventor和Vault平台的船舶舾装卫生单元标准化和参数化设计管理系统 被引量:1
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作者 刘鹏 《CAD/CAM与制造业信息化》 2011年第7期22-24,共3页
船舶舾装内装主要分为内装板、门、家具和整体式卫生单元等,作为船舶内装中模块化设计和制造的典型代表——卫生单元的设计和制造——型式变化大、结构较为复杂,且零部件较多。到目前为止,国内相关厂家在单元设计时,均采用AutoCAD... 船舶舾装内装主要分为内装板、门、家具和整体式卫生单元等,作为船舶内装中模块化设计和制造的典型代表——卫生单元的设计和制造——型式变化大、结构较为复杂,且零部件较多。到目前为止,国内相关厂家在单元设计时,均采用AutoCAD进行劳动密集、低自动化、非标准化和非参数化的设计。这种设计技术门槛较低,设计灵活。 展开更多
关键词 参数化设计 船舶舾装 非标准化 vault 单元 管理系统 卫生 AUTOCAD
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Autodesk~ Vault在变压器三维设计中的应用
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作者 赵艇 《电气制造》 2007年第7期80-81,共2页
1 变压器三维设计流程及面临的问题 大型变压器结构复杂,零部件种类繁多,在设计时既有三维的电缆布线问题、钣金件展开问题、管路设计问题,又有二维图的示意表达、不按比例出图等行业标准问题。设计按其结构和作用的不同分为七大部... 1 变压器三维设计流程及面临的问题 大型变压器结构复杂,零部件种类繁多,在设计时既有三维的电缆布线问题、钣金件展开问题、管路设计问题,又有二维图的示意表达、不按比例出图等行业标准问题。设计按其结构和作用的不同分为七大部分:线圈、绝缘、铁心、油箱、引线、组件及总装配,其相互关系如图1所示。以ODFPS-250000/500的变压器为例,零部件种类800种, 展开更多
关键词 大型变压器 三维设计 AUTODESK vault 应用 设计流程 电缆布线 设计问题
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