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相关概念视频

Longitudinal Research02:20

Longitudinal Research

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Probability Histograms01:17

Probability Histograms

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A probability histogram is a visual representation of a probability distribution. Similar a typical histogram, the probability histogram consists of contiguous (adjoining) boxes. It has both a horizontal axis and a vertical axis. The horizontal axis is labeled with what the data represents. The vertical axis is labeled with probability. Each rectangular bar in the histogram is 1 unit wide, which suggests that the area under each bar equals the probability, P(x), where x is 1, 2, 3, and so on.
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Residuals and Least-Squares Property01:11

Residuals and Least-Squares Property

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The vertical distance between the actual value of y and the estimated value of y. In other words, it measures the vertical distance between the actual data point and the predicted point on the line
If the observed data point lies above the line, the residual is positive, and the line underestimates the actual data value for y. If the observed data point lies below the line, the residual is negative, and the line overestimates the actual data value for y.
The process of fitting the best-fit...
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Archival Research01:40

Archival Research

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Some researchers gain access to large amounts of data without interacting with a single research participant. Instead, they use existing records to answer various research questions. This type of research approach is known as archival research. Archival research relies on looking at past records or data sets to look for interesting patterns or relationships. For example, a researcher might access the academic records of all individuals who enrolled in college within the past ten years and...
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Data Collection by Observations01:08

Data Collection by Observations

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Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the most widely used methods of data collection. It involves collecting data by observing the behavior and physical characteristics of a sample without making any modifications to the sample.
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
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Longitudinal Studies01:26

Longitudinal Studies

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Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
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相关实验视频

Updated: Jul 4, 2025

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
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Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street

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"停车和骑行"的表现如何? 使用纵向数据进行评估.

Xinwei Zhao1,2, Peng Chen1,2, Junfeng Jiao3

  • 1College of Transportation Engineering, Tongji University, Shanghai, China.

Transport policy
|January 29, 2024
PubMed
概括
此摘要是机器生成的。

停车和乘车 (PnR) 场地利用得到了混合土地使用,交通乘客和政策干预的推动. 密集开发和公交铁路集成是最大限度地利用PNR地块的关键.

关键词:
纵向评价 纵向评价 纵向评价面板托比特模型模型停车和骑车很多.政策干预政策干预交通运输的发展.使用率的使用率.

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科学领域:

  • 交通运输规划 交通运输规划
  • 城市研究 城市研究
  • 公共政策 公共政策

背景情况:

  • 停车和骑行 (PnR) 效率缺少现有文献的深入研究.
  • 了解影响PNR用地利用的因素对于有效的运输规划至关重要.

研究的目的:

  • 检查各种因素对公园和骑行 (PnR) 场地利用率的影响.
  • 确定在城市环境中提高PNR地块效率的关键驱动因素.

主要方法:

  • 使用面板Tobit模型来分析PNR批次的利用率.
  • 关于土地使用,道路设计,交通运输乘客,人口统计,旅行行为,政策,汽油价格和天气条件的纳入数据.
  • 数据来源于华盛顿州金县的PNR地块.

主要成果:

  • 在PNR利用和混合土地使用,道路/就业密度,特定年龄组 (18-34岁,65岁以上),白人和低收入人口以及交通乘客之间发现了积极的关联.
  • 观察到的负相关性与车道的比例,男性人口的份额和驾驶模式的份额.
  • 政策干预,如经济衰退后的交通运输保护,拥堵费和公共汽车-铁路整合,与PNR利用有积极的相关性.

结论:

  • 停车和乘车 (PnR) 作为一种实际的方法,以吸引不同的人口统计学,包括年轻人,老年人和低收入人士,到公共交通.
  • 建议促进密集的城市发展,以实现最佳的PNR用地利用.
  • 整合公交和铁路服务是增加PNR使用的有效政策.