循环经济通过机器学习和YouTube视频媒体平台的镜
Georgios Tsironis1, Theodoros Daglis2, Konstantinos P Tsagarakis2
1Department of Environmental Engineering, Democritus University, Xanthi, 67100, Greece.
Journal of environmental management
|August 8, 2024
概括
在YouTube上的循环经济 (CE) 讨论揭示了对可持续产业和资源管理的关键公共利益. 对视频评论的机器学习分析为这些不断变化的环境和企业辩论提供了洞察力.
科学领域:
- 环境科学 环境科学
- 社会科学 社会科学 社会科学
- 数据科学数据科学数据科学
背景情况:
- 循环经济 (CE) 是一项日益增长的可持续发展全球战略,强调资源保护和环保实践.
- 虽然公众和企业对CE的兴趣正在增加,但对了解CE话语的社交媒体数据利用的研究仍然有限.
- 虽然YouTube是公共话语的重要平台,但它在EC讨论中的作用却未被充分探索.
研究的目的:
- 识别和分析与循环经济相关的YouTube视频中讨论的最普遍的主题.
- 利用社交媒体数据和机器学习来揭示公众对CE的看法.
- 提供对工业和企业环境中资源利用的见解.
主要方法:
- 根据评论和观点,选择了包含"循环经济"一词的17个非常相关的YouTube视频.
- 应用机器学习技术来分析内容并确定主导讨论主题.
- 探索两个,五个和十个主题配置,以平衡洞察细节和模型性能.
主要成果:
- 分析确定了两个主要主题:"可持续产业和环境责任"和"循环经济和资源管理".
- 这些话题表明公众对资源利用,工业活动和企业责任感有很大的兴趣.
- 虽然两主题模型显示出很高的连贯性,但探索更详细的配置 (5和10个主题) 提供了细微的见解,而不会严重影响性能.
结论:
- 对YouTube数据的机器学习分析有效地揭示了循环经济辩论中的关键主题.
- 公众与CE在社交媒体上的互动凸显了对可持续工业实践和高效资源管理的强烈关注.
- 这项研究证明了将社交媒体分析与机器学习相结合的价值,以了解复杂的环境和经济转型.
相关概念视频
Sequence Networks of Rotating Machines
98
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
98
Mechanical Efficiency of Real Machines
655
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
655
Dynamics Of Circular Motion: Applications
7.7K
Suppose a car moves on flat ground and turns to the left. The centripetal force causing the car to turn in a circular path is due to friction between the tires and the road. For this, a minimum coefficient of friction is needed, or the car will move in a larger-radius curve and leave the roadway. Let's now consider banked curves, where the slope of the road helps in negotiating the curve. The greater the angle of the curve, the faster one can take the curve. It is common for race tracks for...
7.7K
Dynamics of Circular Motion
13.4K
An object undergoing circular motion, like a race car, is accelerating because it is changing the direction of its velocity. This centrally directed acceleration is called centripetal acceleration. This acceleration acts along the radius of the curved path (thus is also referred to as radial acceleration).
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
13.4K
Conservation of Mechanical Energy
16.2K
The mechanical energy E of a system is the sum of its potential energy U and the kinetic energy K of the objects within it. What happens to this mechanical energy when only conservative forces cause energy transfers within the system—that is, when frictional and drag forces do not act on the objects in the system? Also assume that the system is isolated from its environment; in other words no external force from an object outside the system causes energy changes inside the system.
When a...
When a...
16.2K
Machines
265
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
A free-body diagram of the...
265


