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Review of operational management in intelligent agriculture based on the Internet of Things
Xiangpei HU, Lijun SUN, Yaxian ZHOU, Junhu RUAN
《工程管理前沿（英文）》 2020年 第7卷 第3期 页码 309-322 doi: 10.1007/s42524-020-0107-3
关键词： Internet of Things (IoT) agricultural Internet of Things (Agri-IoT) operational management intelligent agriculture precision management traceability
An integrated approach to site-specific management zone delineation
Yuxin MIAO, David J. MULLA, Pierre C. ROBERT
《农业科学与工程前沿（英文）》 2018年 第5卷 第4期 页码 432-441 doi: 10.15302/J-FASE-2018230
Dividing fields into a few relatively homogeneous management zones (MZ) is a practical and cost-effective approach to precision agriculture. There are three basic approaches to MZ delineation using soil and/or landscape properties, yield information, and both sources of information. The objective of this study is to propose an integrated approach to delineating site-specific MZ using relative elevation, organic matter, slope, electrical conductivity, yield spatial trend map, and yield temporal stability map (ROSE-YSTTS) and evaluate it against two other approaches using only soil and landscape information (ROSE) or clustering multiple year yield maps (CMYYM). The study was carried out on two no-till corn-soybean rotation fields in eastern Illinois, USA. Two years of nitrogen (N) rate experiments were conducted in Field B to evaluate the delineated MZs for site-specific N management. It was found that in general the ROSE approach was least effective in accounting for crop yield variability (8.0%–9.8%), while the CMYYM approach was least effective in accounting for soil and landscape (8.9%–38.1%), and soil nutrient and pH variability (9.4%–14.5%). The integrated ROSE-YSTTS approach was reasonably effective in accounting for the three sources of variability (38.6%–48.9%, 16.1%–17.3% and 13.2%–18.7% for soil and landscape, nutrient and pH, and yield variability, respectively), being either the best or second best approach. It was also found that the ROSE-YSTTS approach was effective in defining zones with high, medium and low economically optimum N rates. It is concluded that the integrated ROSE-YSTTS approach combining soil, landscape and yield spatial-temporal variability information can overcome the weaknesses of approaches using only soil, landscape or yield information, and is more robust for MZ delineation. It also has the potential for site-specific N management for improved economic returns. More studies are needed to further evaluate their appropriateness for precision N and crop management.
关键词： economically optimum nitrogen rate fuzzy cluster analysis precision nitrogen management site-specific management soil landscape property yield map
《农业科学与工程前沿（英文）》 2021年 第8卷 第4期 doi: 10.15302/J-FASE -2020355
Agriculture faces the dual challenges of food security and environmental sustainability. Here, we investigate current maize production at the field scale, analyze the yield gaps and impacting factors, and recommend measures for sustainably closing yield gaps. An experiment was conducted on a 3.9-ha maize seed production field in arid north-western China, managed with border and drip irrigation, respectively, in 2015 and 2016. The relative yield reached 70% in both years. However, drip irrigation saved 227 mm irrigation water during a drier growing season compared with traditional border irrigation, accounting for 44% of the maize evapotranspiration (ET). Yield variability under drip irrigation was 12.1%, lower than the 18.8% under border irrigation. Boundary line analysis indicates that a relative yield increase of 8% to 10% might be obtained by optimizing the yield-limiting factors. Plant density and soil available water content and available nitrogen were the three major factors involved. In conclusion, closing yield gaps with agricultural sustainability may be realized by optimizing agronomic, irrigation and fertilizer management, using water-saving irrigation methods and using site-specific management.
关键词： boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Do not let precision medicine be kidnapped
null
《医学前沿（英文）》 2015年 第9卷 第4期 页码 512-513 doi: 10.1007/s11684-015-0425-8
Obama’s precision medicine initiative made the medical community boil over after the initiative’s release. Precision medicine has been advocated by the majority of scientists and doctors. However, some experts have questioned this concept. This article does not oppose precision medicine. However, the incentive of vigorously promoting precision medicine at present is a concern.
Review on the progress of ultra-precision machining technologies
Julong YUAN, Binghai LYU, Wei HANG, Qianfa DENG
《机械工程前沿（英文）》 2017年 第12卷 第2期 页码 158-180 doi: 10.1007/s11465-017-0455-9
Ultra-precision machining technologies are the essential methods, to obtain the highest form accuracy and surface quality. As more research findings are published, such technologies now involve complicated systems engineering and been widely used in the production of components in various aerospace, national defense, optics, mechanics, electronics, and other high-tech applications. The conception, applications and history of ultra-precision machining are introduced in this article, and the developments of ultra-precision machining technologies, especially ultra-precision grinding, ultra-precision cutting and polishing are also reviewed. The current state and problems of this field in China are analyzed. Finally, the development trends of this field and the coping strategies employed in China to keep up with the trends are discussed.
关键词： ultra-precision grinding ultra-precision cutting ultra-precision polishing research status in China development tendency
Self-generation of machining precision and its realization in lapping of super precision solid balls
ZHANG Bopeng
《机械工程前沿（英文）》 2008年 第3卷 第3期 页码 348-353 doi: 10.1007/s11465-008-0065-7
关键词： self-generation necessary self-regulation capability viewpoint Necessary
Human pangenome: far-reaching implications in precision medicine
《医学前沿（英文）》 doi: 10.1007/s11684-023-1039-1
Highlights in precision agriculture
Chunjiang ZHAO, Minzan LI
《农业科学与工程前沿（英文）》 2018年 第5卷 第4期 页码 391-392 doi: 10.15302/J-FASE-2018246
High resolution satellite imaging sensors for precision agriculture
Chenghai YANG
《农业科学与工程前沿（英文）》 2018年 第5卷 第4期 页码 393-405 doi: 10.15302/J-FASE-2018226
The central concept of precision agriculture is to manage within-field soil and crop growth variability for more efficient use of farming inputs. Remote sensing has been an integral part of precision agriculture since the farming technology started developing in the mid to late 1980s. Various types of remote sensors carried on ground-based platforms, manned aircraft, satellites, and more recently, unmanned aircraft have been used for precision agriculture applications. Original satellite sensors, such as Landsat and SPOT, have commonly been used for agricultural applications over large geographic areas since the 1970s, but they have limited use for precision agriculture because of their relatively coarse spatial resolution and long revisit time. Recent developments in high resolution satellite sensors have significantly narrowed the gap in spatial resolution between satellite imagery and airborne imagery. Since the first high resolution satellite sensor IKONOS was launched in 1999, numerous commercial high resolution satellite sensors have become available. These imaging sensors not only provide images with high spatial resolution, but can also repeatedly view the same target area. The high revisit frequency and fast data turnaround time, combined with their relatively large aerial coverage, make high resolution satellite sensors attractive for many applications, including precision agriculture. This article will provide an overview of commercially available high resolution satellite sensors that have been used or have potential for precision agriculture. The applications of these sensors for precision agriculture are reviewed and application examples based on the studies conducted by the author and his collaborators are provided to illustrate how high resolution satellite imagery has been used for crop identification, crop yield variability mapping and pest management. Some challenges and future directions on the use of high resolution satellite sensors and other types of remote sensors for precision agriculture are discussed.
关键词： high resolution satellite sensor multispectral imagery precision agriculture spatial resolution temporal resolution
Molecular classification and precision therapy of cancer: immune checkpoint inhibitors
null
《医学前沿（英文）》 2018年 第12卷 第2期 页码 229-235 doi: 10.1007/s11684-017-0581-0
On May 23, 2017, the US Food and Drug Administration (FDA) approved a treatment for cancer patients with positive microsatellite instability-high (MSI-H) markers or mismatch repair deficient (dMMR) markers. This approach is the first approved tumor treatment using a common biomarker rather than specified tumor locations in the body. FDA previously approved Keytruda for treatment of several types of malignancies, such as metastatic melanoma, metastatic non-small-cell lung cancer, recurrent or metastatic head and neck cancer, refractory Hodgkin lymphoma, and urothelial carcinoma, all of which carry positive programmed death-1/programmed death-ligand 1 biomarkers. Therefore, indications of Keytruda significantly expanded. Several types of malignancies are disclosed by MSI-H status due to dMMR and characterized by increased neoantigen load, which elicits intense host immune response in tumor microenvironment, including portions of colorectal and gastric carcinomas. Currently, biomarker-based patient selection remains a challenge. Pathologists play important roles in evaluating histology and biomarker results and establishing detection methods. Taking gastric cancer as an example, its molecular classification is built on genome abnormalities, but it lacks acceptable clinical characteristics. Pathologists are expected to act as “genetic interpreters” or “genetic translators” and build a link between molecular subtypes with tumor histological features. Subsequently, by using their findings, oncologists will carry out targeted therapy based on molecular classification.
关键词： molecular classification precision medicine pembrolizumab PD-1/PD-L1 MSI-H
ECRG4: a new potential target in precision medicine
Xin Qin, Ping Zhang
《医学前沿（英文）》 2019年 第13卷 第5期 页码 540-546 doi: 10.1007/s11684-018-0637-9
关键词： ECRG4 tumor suppressor gene sentinel molecule precision medicine cell senescence epithelium homeostasis
Application of liquid biopsy in precision medicine: opportunities and challenges
null
《医学前沿（英文）》 2017年 第11卷 第4期 页码 522-527 doi: 10.1007/s11684-017-0526-7
Precision medicine for cancer patients aims to adopt the most suitable treatment options during diagnosis and treatment of individuals. Detecting circulating tumor cell (CTC) or circulating tumor DNA (ctDNA) in plasma or serum could serve as liquid biopsy, which would be useful for numerous diagnostic applications. Liquid biopsies can help clinicians screen and detect cancer early, stratify patients to the most suitable treatment and real-time monitoring of treatment response and resistance mechanisms in the tumor, evaluate the risk for metastatic relapse, and estimate prognosis. We summarized the advantages and disadvantages of tissue and liquid biopsies. We also further compared and analyzed the advantages and limitations of detecting CTCs, ctDNAs, and exosomes. Furthermore, we reviewed the literature related with the application of serum or plasma CTCs, ctDNAs, and exosomes for diagnosis and prognosis of cancer. We also analyzed their opportunities and challenges as future biomarkers. In the future, liquid biopsies could be used to guide cancer treatment. They could also provide the ideal scheme to personalize treatment in precision medicine.
关键词： liquid biopsy circulating tumor cells cell-free ctDNA exosomes precision medicine
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
《农业科学与工程前沿（英文）》 2021年 第8卷 第4期 页码 525-544 doi: 10.15302/J-FASE-2020355
关键词： boundary line analysis irrigation method precision agriculture spatial variability yield gaps yield-limiting factors
Special issue: Ultra-precision machining
Zhuangde JIANG,Dongming GUO
《机械工程前沿（英文）》 2017年 第12卷 第1期 页码 1-2 doi: 10.1007/s11465-017-0445-y
Development and application prospects of piezoelectric precision driving technology
ZHAO Chunsheng, ZHANG Jiantao, ZHANG Jianhui, JIN Jiamei
《机械工程前沿（英文）》 2008年 第3卷 第2期 页码 119-132 doi: 10.1007/s11465-008-0034-1
关键词： Electromagnetic ultra-precision processing technology piezoelectric cumbrous
标题 作者 时间 类型 操作
Review of operational management in intelligent agriculture based on the Internet of Things
Xiangpei HU, Lijun SUN, Yaxian ZHOU, Junhu RUAN
期刊论文
An integrated approach to site-specific management zone delineation
Yuxin MIAO, David J. MULLA, Pierre C. ROBERT
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL
期刊论文
Review on the progress of ultra-precision machining technologies
Julong YUAN, Binghai LYU, Wei HANG, Qianfa DENG
期刊论文
Self-generation of machining precision and its realization in lapping of super precision solid balls
ZHANG Bopeng
期刊论文
PLANT DENSITY, IRRIGATION AND NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL
Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU
期刊论文
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