突变原因的实验分析

分析了S.E.Luria的波动实验、J.Lederberg的影印平板培养法在证明"突变是自发的"这一结论中的作用,简述了J.Cairns"定向突变"的观点。     

一种基于P2P的云存储模型研究

在分析当前云存储系统所面临的问题的基础上,提出一种基于P2P技术的云存储模型。此模型应用Chord算法来组织节点并分发用户的请求,解决集中式云存储系统的中心节点瓶颈问题,实现系统的负载均衡;使用存储簇来完成数据的存储和管理,简化系统管理的难度;并提出模型的副本管理策略,使云存储系统具有良好的可扩展性、容错性和高性能。     

空间信息网格中的复制技术

空间信息网格项目数据量大，用户遍及各地，对数据文件的请求延时大、占大量带宽。复制可以节省带宽、减少时延、均衡负载、改善系统可靠性。采用动态复制技术可以使用户有效地获得所需的数据。本文详细地论述了动态复制策略以及空间信息网格中的复制管理机制、复制服务流程和具体实施。     

影印平板法方法的研究与改进

传统的影印平板法(Replica plating)自上世纪中叶发明以来,经过不断改进,现在已经成为微生物实验的一项重要方法.然而传统方法存在使用的丝绒材料价格较贵、需反复灭菌和使用不便等缺点.本文提出了一种新的影印模型.新模型在影印工具、方法及使用材料上进行了改进,从而使影印平板法操作既便捷又可靠.     

Migrating facsimiles: When copies disappear from conservation control

A 2014 exhibition of Meriç Algün Ringborg at Moderna Museet, Stockholm, Sweden, exploring identity and belonging involved the making of facsimiles. The installation included a sound work, booklets to be taken, and a book to be read. Exhibition copies were created of personal letters for open display which were not to be touched. Contrary to the artist's wishes, the work was constantly handled. Made for this one installation, the facsimiles transcended the exhibition and were returned with the work to the artist. The paper examines issues of authenticity and control from a conservation standpoint, and details discussions surrounding reproduction in contemporary art museum conservation practice.     

Do conservators dream of electric sheep? Replicas and replication

The paper crosses the boundaries between different genres, drawing on key material and emphasising the philosophical challenges around decision-making and values in relation to replication and replicas. In 1968, Philip K. Dick wrote the book Do Androids Dream of Electric Sheep? which became the inspiration for the 1982 film Bladerunner. The book is set in Los Angeles in a post-apocalyptic future where mankind has left Earth, resulting in androids being created to develop new ‘off-world’ colonies. The book and film create a novel and interesting framework to discuss the subject of replicas and replication within contemporary conservation practice. Key themes are decay promoting replication, original versus replica, creating empathy in replication. The debate focuses on the case study of Naum Gabo's Construction in Space (Crystal) of 1937–39; which was the sculpture replicated in the most recent replication project at Tate, completed in July 2015.