相关实验视频
Updated: Jul 9, 2026

08:07
Laser-induced Forward Transfer of Ag Nanopaste
Published on: March 31, 2016
11.3K
重新思考分布式账本技术的使用
Rick Kuhn1, Jeff Voas1, Dylan Yaga1
1National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
概括
为加密货币设计的区块链在数据管理方面面临挑战. 本研究探讨了分布式分类账技术 (DLT) 的适应,以改善数据管理,包括区块修改和准确的时间盖章.
科学领域:
- 计算机科学 计算机科学
- 分布式系统 分布式系统
- 数据管理数据管理
背景情况:
- 区块链最初是为加密货币开发的,以防止双重支出,已经引起了广泛的兴趣.
- 然而,区块链设计选择并不总是适合一般数据管理应用程序.
- 现有的分布式账本技术 (DLT) 往往缺乏适应典型数据管理需求的灵活性.
研究的目的:
- 审查DLT在数据管理应用中的特性.
- 引入两种新的DLT概念,使区块链功能适应更广泛的使用.
- 为了实现像区块修改和准确的时间在许可的DLT中这样的基本功能.
主要方法:
- 审查区块链属性及其对数据管理的适用性.
- 介绍了两个新的分布式分类账的想法.
- 分析这些想法是如何支持区块可变性和精确时间标记的.
主要成果:
- 演示DLT可以适应超越加密货币的数据管理.
- 成功整合了区块删除/修改功能.
- 实施一个非常精确的时间印机制,用于时间顺序依赖的应用程序.
结论:
- 对于一般数据管理任务,DLT可以有效地进行修改.
- 拟议的调整保留了区块链的价值,同时增加了必要的功能.
- 这些进步对于时间敏感和可变数据应用至关重要.
相关概念视频
Restarting Stalled Replication Forks
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...
Issues And Trends In Healthcare Delivery System
The issues and trends in healthcare delivery are constantly changing. The COVID-19 pandemic is one recent issue that wreaked havoc on healthcare systems, causing a shortage of healthcare workers, high demand for medicines and supplies, and increased medical expenditure due to a lack of insurance. Other issues include rising healthcare costs and care fragmentation.
Cost Containment
Payment for healthcare services has historically promoted adoption of costly and often unnecessary or inefficient...
Cost Containment
Payment for healthcare services has historically promoted adoption of costly and often unnecessary or inefficient...
Restarting Stalled Replication Forks
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart, a...
Distributed Loads
Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
Distributed Loads: Problem Solving
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
Distribution Reliability and Automation
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...

