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相关概念视频

Issues And Trends In Healthcare Delivery System01:29

Issues And Trends In Healthcare Delivery System

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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...
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Legal Guidelines for Documentation01:06

Legal Guidelines for Documentation

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The legal guidelines for nursing documentation are essential for ensuring accurate, professional, and ethical recording of patient care. The guidelines are discussed here:
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Buffer Effectiveness02:19

Buffer Effectiveness

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Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
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Production Efficiency01:01

Production Efficiency

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Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
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Social Exchange Theory02:06

Social Exchange Theory

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We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).
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Stream Function

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In two-dimensional incompressible fluid flow, the continuity equation is essential for ensuring mass conservation, meaning that any change in fluid entering or exiting a region is balanced by a corresponding change elsewhere. For incompressible flow, where density remains constant, this requirement simplifies to the condition that the divergence of the velocity field must be zero. Mathematically, this is expressed as,
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相关实验视频

Updated: Sep 8, 2025

Author Spotlight: Automated Deep Brain Stimulation for Parkinson's Disease - Exploring the Possibilities and Challenges of Home Monitoring
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分散视频版权保护:一个新的区块链支持的框架与绩效评估

Sri Lakshmi Madapati1, Nihar Ranjan Pradhan2

  • 1School of Computer Science and Engineering (SCOPE), VIT-AP University, Amaravati, Andhra Pradesh, India.

Frontiers in artificial intelligence
|September 3, 2025
PubMed
概括

这项研究介绍了使用星际文件系统 (IPFS) 和区块链进行视频版权保护的去中心化框架. 它使用智能合约和感知哈希 (Phash) 来确保数字资产的安全和可验证所有权.

关键词:
星际档案系统区块链感知散列类似性分析视频版权保护

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科学领域:

  • 计算机科学
  • 数字法医
  • 知识产权法

背景情况:

  • 数字内容,特别是多媒体,在网上面临着严重的版权侵权问题.
  • 对数字资源的未经授权的修改侵犯了知识产权.
  • 现有的系统难以提供安全和透明的数字资产管理.

研究的目的:

  • 提出一个新的视频版权保护去中心化框架.
  • 解决与数字多媒体资产相关的不安全性和开放性问题.
  • 促进创意作品所有权的安全,透明和不可变的交易.

主要方法:

  • 开发一个利用星际文件系统 (IPFS) 和区块链技术的分散框架.
  • 在以太坊网络上实施基于Solidity的智能合约,用于视频注册和版权检查.
  • 使用感知哈希 (Phash) 来比较原始和修改的视频内容以解决争议.
  • 创建IPFS哈希值来表示视频内容的所有权.

主要成果:

  • 该框架成功地注册了视频并使用智能合约进行版权检查.
  • 感知哈希 (Phash) 和IPFS哈希值在以太坊区块链上进行比较.
  • 在Hyperledger Caliper中的性能评估显示视频记录延迟时间为5.02秒,吞吐量为409.87秒.
  • 视频验证显示延迟时间为4.57秒, 吞吐量为484.23秒.

结论:

  • 拟议的去中心化框架有效地加强了视频版权保护.
  • 区块链和IPFS的整合提供了一个安全,透明和不变的数字资产管理系统.
  • 该框架为验证数字空间中的视频完整性和所有权提供了可行的解决方案.