Mutual information maximizing GAN inversion for real face with identity preservation

Recent generative adversarial networks (GANs) have yielded remarkable performance in face image synthesis. GAN inversion embeds an image into the latent space of a pretrained generator, enabling it to be used for real face manipulation. However, current inversion approaches for real faces suffer the dilemma of initialization collapse and identity loss. In this paper, we propose a hierarchical GAN inversion for real faces with identity preservation based on mutual information maximization. We first use a facial domain guaranteed initialization to avoid the initialization collapse. Furthermore, we prove that maximizing the mutual information between inverted faces and their identities is equivalent to minimizing the distance between identity features from inverted and original faces. Optimization for real face inversion with identity preservation is implemented on this mutual information-maximizing constraint. Extensive experimental results show that our approach outperforms state-of-the-art solutions for inverting and editing real faces, particularly in terms of face identity preservation.     

基于区块链应用模式的铁路旅客身份认证系统

采用“区块链技术+不对称加密+生物识别+身份认证”应用模式，依托智能手机客户端设计与开发一套铁路旅客身份认证系统.基于Ethereum开发平台，应用truffle开发框架，实现铁路旅客身份认证系统智能合约的编写与部署.系统针对传统铁路身份认证模式的不足，将旅客身份数据分布式存储，弱化中心化服务器的压力，提升旅客身份数据的安全性和鲁棒性；进行生物信息认证确保旅客对身份信息的所有权；利用非对称加密技术在保护旅客隐私、实现实名制的前提下增强数据的透明性.基于区块链应用模式的铁路旅客身份认证系统能够让用户身份实现本地存储、信息摘要链上校验，实现铁路旅客身份信息数据访问的细粒度控制，保障铁路旅客身份信息安全，提升铁路旅客的乘车体验.     

Cybersecurity through the lens of Digital Identity and Data Protection: Issues and Trends

The use of a secure and robust digital identification system that is capable of protecting privacy is an essential, reliable and user-friendly element for a strong cyber resilience strategy and is a source of new business opportunities and applications for banks, private sector with a return on their investment.The march towards Digital Identity is well underway therefore, focus should be on both adoption and adaption of the new structures and regulations. These are needed to govern the associated services and transactions as well as establishing laws that enforce penalties for violations.There is no doubt then that more and more entities and institutions would move to the cloud. Security challenges affecting the cloud may not be new but the mode of addressing them would be different. The authors develop a Data Colouring technique for securing data processed or stored on both cloud and non-cloud platforms. The technique combines Public Key Infrastructure (PKI), concatenated fingerprints and digital watermarking. Using this technique, data can be secured at creation or during storage and remains secure during processing.     

Analysis of the impact of PCI planning on downlink throughput performance in LTE

The planning of Physical Cell Identities (PCI) has a strong impact on the performance of Long Term Evolution cellular networks. Although several PCI planning schemes have been proposed in the literature, no study has quantified the performance gains obtained by these schemes. In this paper, a comprehensive performance analysis is carried out to quantify the impact of PCI planning on user quality of service and network capacity in the downlink of LTE. First, an analytical model for the influence of PCI planning on reference signal collisions is developed. Based on this model, different PCI planning schemes are tested on a dynamic system-level simulator implementing a macrocellular scenario. During the analysis, both Voice-over-IP and full buffer services over time-synchronized and non-time synchronized networks are considered. Results show that call blocking and dropping for real-time services and user throughput for non-real time services can be significantly improved by a proper PCI plan.     

当代影视作品中中国传统服饰文化的身份建构

服饰文化元素是影视作品的重要构成部分,在文化身份建构和文化传播中具有重要的价值。文章基于影像叙事、传承与创新、全球语境下传统服饰文化的发展等动态的、多维的视域,全面观照当代影视传统服饰文化的身份建构路径,并探讨传统服饰文化资源在影视生产中合理转化的途径。     

English Hill Towns: Some Further Steps in Appreciating their Identity in the Wider Landscape

The notion that English hill towns can be identified as a particular type of settlement is reinforced and a systematic analysis of the characteristics that contribute to their identity in the wider landscape is undertaken. Fourteen towns that meet the working definition of an English hill town are examined in terms of four sets of characteristics that constitute their distinctive features: the continuing imprint of their origins, location and early functions; the influence of natural physical features on their founding and subsequent development; their morphological form; and the visual characteristics that are the medium through which their identity is mainly experienced — pre-eminent amongst these are a town's visual profile, its figure - ground relationship with the landscape, and its skyline. Groups of hill towns with consistent characteristics are identified, including 'classic' English hill towns. While the analysis is not directed explicitly towards the development and implementation of planning policy, the fuller understanding of hill towns gained through the analysis should enrich the policy process.     

深圳红树西岸

对于滨海地区的住宅建设,不仅关注都市居住品质,还将更多地承担起滨水空间界面、城市形象展现的责任。在一定的层次上,这两个任务可以较好地结合并创作出富有活力的住区。本文通过红树西岸项目设计实践,对上述观点加以诠释和阐述。     

居住区汽车拥有率及出入口交通特征分析

针对深圳市部分居住区的居民汽车拥有率和出入口交通特征进行调查分析,其结论可作为制定居住区交通规划导则相关条例的依据。