资源类型

期刊论文 5

年份

2021 3

2019 2

关键词

人机识别;随机森林;支持向量机;逻辑回归;多维性能评价指标 1

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An overview of the reliability metrics for power grids and telecommunication networks

《工程管理前沿(英文)》 2021年 第8卷 第4期   页码 531-544 doi: 10.1007/s42524-021-0167-z

摘要: Power grids deliver energy, and telecommunication networks transmit information. These two facilities are critical to human society. In this study, we conduct a comprehensive overview of the development of reliability metrics for power grids and telecommunication networks. The main purpose of this review is to promote and support the formulation of communication network reliability metrics with reference to the development of power grid reliability. We classify the metrics of power grid into the reliability of power distribution and generation/transmission and the metrics of telecommunication network into connectivity-based, performance-based, and state-based metrics. Then, we exhibit and discuss the difference between the situations of the reliability metrics of the two systems. To conclude this study, we conceive a few topics for future research and development for telecommunication network reliability metrics.

关键词: reliability     metrics     power grids     telecommunication networks    

A review of sustainability metrics for the construction and operation of airport and roadway infrastructure

Sarah M. L. HUBBARD, Bryan HUBBARD

《工程管理前沿(英文)》 2019年 第6卷 第3期   页码 433-452 doi: 10.1007/s42524-019-0052-1

摘要:

Sustainability has become increasingly important, however, relatively little attention has focused on metrics for the construction and operation of airport and roadway infrastructure. Most attention has focused on buildings, with high profile BREEAM and LEED projects taking center stage. Sustainability is also important in airport and roadway infrastructure projects, which have significant public impact but have a much lower profile than vertical construction when it comes to sustainability. Sustainable infrastructure is important in China and India where new infrastructure is under construction to meet growing and developing economies, and in the US, where infrastructure is in substandard condition and requires reconstruction. The purpose of this paper is to provide an overview and discussion of sustainability rating systems for airport and roadway infrastructure, including both construction and operation. Specific projects that highlight both proven and innovative sustainable practices are included to illustrate the application of these concepts. Finally, the relationship between sustainable transportation infrastructure and resilient transportation infrastructure is addressed since resiliency is of growing interest and there is overlap between these concepts.

关键词: sustainable construction     infrastructure     airport     roadway     resiliency     sustainability    

COMPARING PERFORMANCE OF CROP SPECIES MIXTURES AND PURE STANDS

《农业科学与工程前沿(英文)》 2021年 第8卷 第3期   页码 481-489 doi: 10.15302/J-FASE-2021413

摘要:

Intercropping is the planned cultivation of species mixtures on agricultural land. Intercropping has many attributes that make it attractive for developing a more sustainable agriculture, such as high yield, high resource use efficiency, lower input requirements, natural suppression of pests, pathogens and weeds, and building a soil with more organic carbon and nitrogen. Information is needed which species combinations perform best under different circumstances and which management is suitable to bring out the best from intercropping in a given production situation. The literature is replete with case studies on intercropping from across the globe, but evidence synthesis is needed to make this information accessible. Meta-analysis requires a careful choice of metric that is appropriate for answering the question at hand, and which lends itself for a robust meta-analysis. This paper reviews some metrics that may be used in the quantitative synthesis of literature data on intercropping.

 

关键词: intercropping     species mixtures     meta-analysis     metrics     indicators    

Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

《工程管理前沿(英文)》 2021年 第8卷 第3期   页码 442-455 doi: 10.1007/s42524-020-0108-2

摘要: Performance measurement (PM) generates useful data for process control, facilitates communication between different sectors, and helps to align efforts on the most important aspects of the business. Thus, PM plays a key role in the management of projects and organizations. PM is also important in the implementation of lean production principles and methods, such as reducing the share of nonvalue-adding activities, increasing process transparency, building continuous improvement into the process, and benchmarking. Moreover, the adoption of the lean production philosophy requires changes in PM. Despite its importance, limited studies have been conducted on the use of PM systems for assessing the impact of lean production programs in construction projects. In addition, studies on how lean companies (or projects) use performance measurement and to what extent the indicators adopted reflect the result of actions that have been undertaken are limited. This study proposes a set of requirements in PM systems of construction projects from the perspective of lean production and a taxonomy of performance metrics for lean production systems. Five empirical studies have been carried out on construction companies from South America involved in the implementation of lean production systems. The scope of this investigation is limited to the construction projects as production systems rather than PM at the level of construction organizations.

关键词: performance measurement     lean construction     production management     continuous improvement     metrics    

基于随机森林模型的滑动轨迹人机识别 Research Articles

Zhen-yi XU, Yu KANG, Yang CAO, Yu-xiao YANG

《信息与电子工程前沿(英文)》 2019年 第20卷 第7期   页码 925-929 doi: 10.1631/FITEE.1700442

摘要: 识别码在维护网络安全的人机身份验证中得到广泛应用。人机身份验证面临的挑战包括对人与机器滑动轨迹的正确检测。提出一种基于滑动轨迹数据集的人机识别随机森林模型。通过多维性能评价指标,包括识别准确率、识别召回率、识别误报率、识别漏报率、F值和加权准确率,验证该随机森林模型以及基准模型(逻辑回归模型和支持向量机)。随机森林模型多维性能评价指标优于基准模型。

关键词: 人机识别;随机森林;支持向量机;逻辑回归;多维性能评价指标    

标题 作者 时间 类型 操作

An overview of the reliability metrics for power grids and telecommunication networks

期刊论文

A review of sustainability metrics for the construction and operation of airport and roadway infrastructure

Sarah M. L. HUBBARD, Bryan HUBBARD

期刊论文

COMPARING PERFORMANCE OF CROP SPECIES MIXTURES AND PURE STANDS

期刊论文

Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

期刊论文

基于随机森林模型的滑动轨迹人机识别

Zhen-yi XU, Yu KANG, Yang CAO, Yu-xiao YANG

期刊论文