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1. Improving 3D food printing performance using computer vision and feedforward nozzle motion control

Author:
Yizhou Ma; Jelle Potappel; Aneesh Chauhan; Maarten A.I. Schutyser; Remko M. Boom; Lu Zhang
Source:
Journal of food engineering 2023 v.339 pp. 111277
ISSN:
0260-8774
Subject:
control methods,   etc   ; computer software; computer vision; cookies; dough; extrusion; printers; processed cheeses; white chocolate;     Show all 9 Subjects
Abstract:
... 3D food printing is an emerging technology to customize food designs and produce personalized foods. Food printing materials are diverse in rheological properties, which makes reliable extrusion-based 3D printing with constant printing parameters a challenge. Food printing often suffers from improper extrusion because of the varying elasticity of the food materials. In this study, a computer visio ...
DOI:
10.1016/j.jfoodeng.2022.111277

2. Image-Based Adaptive Staring Attitude Control for Multiple Ground Targets Using a Miniaturized Video Satellite

Author:
Chao Song; Caizhi Fan; Mengmeng Wang
Source:
Remote Sensing 2022 v.14 no.16 pp. -
ISSN:
2072-4292
Subject:
control methods,   etc   ; cameras; satellites;     Show all 3 Subjects
Abstract:
... A miniaturized video satellite can observe the ground targets by recording real-time video clips in staring control mode and therefore obtains a unique advantage over traditional remote sensing techniques. To further extend the application of a video satellite, a strategy for simultaneously observing a group of ground targets is to be developed. To cope with the impacts of an uncalibrated camera o ...
DOI:
10.3390/rs14163974

3. Long-lived charge separated state and thermally activated delayed fluorescence in anthraquinone-phenoxazine electron donor–acceptor dyads

Author:
Xiaoyu Zhao; Jianzhang Zhao
Source:
Chemical communications 2022 v.58 no.55 pp. 7666-7669
ISSN:
1364-548X
Subject:
control methods,   etc   ; fluorescence; spectroscopy;     Show all 3 Subjects
Abstract:
... Long-lived charge separated (CS) triplet state (2.6 μs) and thermally activated delayed fluorescence (TADF) [τ = 282 ns (90.4%)/2.4 μs (9.6%)] were observed in an anthraquinone-phenoxazine electron donor–acceptor dyad via the electron spin control method, and emissive ¹CS and non-emissive ³CS states were discriminated via nanosecond transient absorption spectroscopy and global analysis. ...
DOI:
10.1039/d2cc01958b

4. Power improvement of a cluster of three Savonius wind turbines using the variable-speed control method

Author:
Yunrui Chen; Penghua Guo; Dayu Zhang; Kaixin Chai; Chenxi Zhao; Jingyin Li
Source:
Renewable energy 2022 v.193 pp. 832-842
ISSN:
0960-1481
Subject:
control methods,   etc   ; Taguchi method; wind;     Show all 3 Subjects
Abstract:
... The average power output of multiple Savonius wind turbines optimally arranged in a cluster is improved significantly compared to that of an isolated turbine due to the coupling effect. Previous investigations focused on the influence of the configuration and the initial phase angles of Savonius turbines operating at the same rotational speed in a cluster. This paper proposes to adopt the variable ...
DOI:
10.1016/j.renene.2022.05.062

5. The impact of the Panama Canal transfer on the Panamanian economy

Author:
Gabriel Fuentes Cordoba
Source:
Economics letters 2022 v.211 no. pp. 110208
ISSN:
0165-1765
Subject:
control methods,   etc   ; Panama Canal; Panama;     Show all 3 Subjects
Abstract:
... Panama received full administration of the Panama Canal in December 31st of 1999. Using the synthetic control method, I quantify the effect of this transfer on per capita GDP in Panama. The findings suggest that the transfer had a small positive effect in the short-run and a large positive effect in the mid- and long-run. However, the long-run effect may be overestimated due to the expansion of th ...
DOI:
10.1016/j.econlet.2021.110208

6. A Tracking Imaging Control Method for Dual-FSM 3D GISC LiDAR

Author:
Yu Cao; Xiuqin Su; Xueming Qian; Haitao Wang; Wei Hao; Meilin Xie; Xubin Feng; Junfeng Han; Mingliang Chen; Chenglong Wang
Source:
Remote Sensing 2022 v.14 no.13 pp. -
ISSN:
2072-4292
Subject:
control methods,   etc   ; flight; lidar; remote sensing;     Show all 4 Subjects
Abstract:
... In this paper, a tracking and pointing control system with dual-FSM (fast steering mirror) composite axis is proposed. It is applied to the target-tracking accuracy control in a 3D GISC LiDAR (three-dimensional ghost imaging LiDAR via sparsity constraint) system. The tracking and pointing imaging control system of the dual-FSM 3D GISC LiDAR proposed in this paper is a staring imaging method with m ...
DOI:
10.3390/rs14133167

7. RS-GIS based assessment of the impact of Hatimura embankment on the channel planform of the Kolong River, Assam, India

Author:
Minakshi Bora; Dulal Chandra Goswami
Source:
Geocarto international 2022 v.37 no.19 pp. 5547-5563
ISSN:
1752-0762
Subject:
control methods,   etc   ; flood control; rivers; India;     Show all 4 Subjects
Abstract:
... Kolong River is recognized as an immensely degraded and flow deficit river of India. Installation of the Hatimura embankment as an ad-hoc flood control measure had restricted the entry of water into the river channel from its source thus converting it into a flow deprived polluted river. Significance of this study lies in the identification of the impacts of the Hatimura embankment on the planform ...
DOI:
10.1080/10106049.2021.1926551

8. Modeling and control of central air conditionings for providing regulation services for power systems

Author:
Kang Xie; Hongxun Hui; Yi Ding; Yonghua Song; Chengjin Ye; Wandong Zheng; Shuiquan Ye
Source:
Applied energy 2022 v.315 pp. 119035
ISSN:
0306-2619
Subject:
control methods,   etc   ; air; energy; models; temperature;     Show all 5 Subjects
Abstract:
... The increasing renewable energies bring more generation fluctuations to power systems, which puts forward a higher requirement on regulation services for maintaining the system balance. Existing traditional generating units probably cannot provide sufficient regulation services to solve this challenge. With the progress of information and communication technologies, it is possible to control deman ...
DOI:
10.1016/j.apenergy.2022.119035

9. Novel modular multilevel converter-based five-terminal MV/LV hybrid AC/DC microgrids with improved operation capability under unbalanced power distribution

Author:
Qian Xiao; Yunfei Mu; Hongjie Jia; Yu Jin; Xiaodan Yu; Remus Teodorescu; Josep M. Guerrero
Source:
Applied energy 2022 v.306 pp. 118140
ISSN:
0306-2619
Subject:
control methods,   etc   ; capacitors; electric potential difference; topology;     Show all 4 Subjects
Abstract:
... Conventionally, the multilevel converter-based multi-terminal hybrid microgrids require a large number of power switches and have a limited operation capability under unbalanced power distribution in medium and low voltage (MV/LV) AC/DC microgrids. To solve this issue, this paper proposes the novel modular multilevel converter (MMC)-based five-terminal MV/LV hybrid AC/DC microgrids. The proposed h ...
DOI:
10.1016/j.apenergy.2021.118140

10. Spillover Effects of Grocery Bag Legislation: Evidence of Bag Bans and Bag Fees

Author:
Yu-Kai Huang; Richard T. Woodward
Source:
Environmental and resource economics 2022 v.81 no.4 pp. 711-741
ISSN:
0924-6460
Subject:
control methods,   etc   ; laws and regulations; scanners; wastes;     Show all 4 Subjects
Abstract:
... We investigate the unintended consequences of carryout grocery bag (CGB) regulations by looking at the impact on sales of alternative plastic bag products. We extend the literature by studying two types of CGB regulations, bag bans and bag fees. Using retail scanner data and employing a general synthetic control method, we find that both types of CGB regulations are associated with significantly h ...
DOI:
10.1007/s10640-022-00646-5

11. Intelligent control method of underwater inspection robot in netcage

Author:
Yinghao Wu; Jincun Liu; Yaoguang Wei; Dong An; Yunhong Duan; Wensheng Li; Baoke Li; Yuanrong Chen; Qiong Wei
Source:
Aquaculture research 2022 v.53 no.5 pp. 1928-1938
ISSN:
1355-557X
Subject:
control methods,   etc   ; algorithms; aquaculture; cameras; durability; research;     Show all 6 Subjects
Abstract:
... The traditional netcage inspection requires divers to complete, which is inefficient and dangerous. The underwater robot inspection is a way to solve the problem. When the robot is in motion, the camera shoots the netcage, replacing the manual inspection. A new hybrid control strategy based on neural network (NN) and proportional integral differential (PID) is proposed for underwater three‐dimensi ...
DOI:
10.1111/are.15721

12. Model predictive control of portable electronic devices under skin temperature constraints

Author:
Haoran Liu; Jiaqi Yu; Ruzhu Wang
Source:
Energy 2022 v.260 pp. 125185
ISSN:
0360-5442
Subject:
control methods,   etc   ; algorithms; electronics; energy; models; skin temperature;     Show all 6 Subjects
Abstract:
... Thermal management is becoming a major challenge for electronics, and a better temperature control algorithm that could maximize the system performance will play a greater role in fully utilizing the existing cooling capacity. Unfortunately, the simplest look-up table method is still widely used as the temperature control algorithm in current portable electronic devices, especially laptops, result ...
DOI:
10.1016/j.energy.2022.125185

13. Intelligent ballast control system with active load-transfer for electric tractors

Author:
Shengli Zhang; Bin Xie; Changkai Wen; Yirong Zhao; Yuefeng Du; Zhongxiang Zhu; Zhenghe Song; Lingmin Li
Source:
Biosystems engineering 2022 v.215 pp. 143-155
ISSN:
1537-5110
Subject:
control methods,   etc   ; algorithms; batteries; dynamic load; models; tractors;     Show all 6 Subjects
Abstract:
... For agricultural tractors fixed ballast cannot provide high-efficiency traction under time-varying resistance in the field. Combining the characteristics of electric tractors with high-weight battery packs, this paper develops an intelligent ballast control system including a battery position adjustment (BPA) mechanism and an active ballasting control method. A tractor traction performance predict ...
DOI:
10.1016/j.biosystemseng.2022.01.008

14. An experimental approach for improving stability in DC bus voltage of a stand-alone photovoltaic generator

Author:
Abdelkarim Masmoudi; Achraf Abdelkafi; Lotfi Krichen; Abdelaziz Salah Saidi
Source:
Energy 2022 v.257 pp. 124797
ISSN:
0360-5442
Subject:
control methods,   etc   ; electric potential difference; electricity; solar energy;     Show all 4 Subjects
Abstract:
... Photovoltaic energy has become an increasingly competitive source delivering electricity with a steadily cost decline. Alongside the deployment of this sustainable energy system, the power supply stability should be thoroughly examined especially in off-grid systems when electricity storage becomes a constraint. The work presented in this paper proposes a practical solution for the DC bus voltage ...
DOI:
10.1016/j.energy.2022.124797

15. Hybrid model-driven and data-driven control method based on machine learning algorithm in energy hub and application

Author:
Qingsen Cai; XingQi Luo; Peng Wang; Chunyang Gao; Peiyu Zhao
Source:
Applied energy 2022 v.305 pp. 117913
ISSN:
0306-2619
Subject:
control methods,   etc   ; algorithms; data collection; energy; mathematical models;     Show all 5 Subjects
Abstract:
... Energy forms the foundation for humans, but with the wastage of energy and energy consumption being at critical levels, energy saving has become an urgent priority. As a general term for various complex energy systems, energy hub and its control have become key research objects with regard to energy saving. In terms of control of an energy hub, the traditional model-driven approach and the current ...
DOI:
10.1016/j.apenergy.2021.117913

16. HVAC energy savings, thermal comfort and air quality for occupant-centric control through a side-by-side experimental study

Author:
Meng Kong; Bing Dong; Rongpeng Zhang; Zheng O'Neill
Source:
Applied energy 2022 v.306 pp. 117987
ISSN:
0306-2619
Subject:
control methods,   etc   ; air quality; energy conservation; energy efficiency; heat;     Show all 5 Subjects
Abstract:
... Building sensing technologies have evolved rapidly in the last two decades in aid of monitoring building environment and energy system performance. A series of occupancy sensing systems were developed to track the occupant behavior in the indoor space. Occupancy-based building system control is defined as a control method that adjusts the building system operation schedules and setpoints based on ...
DOI:
10.1016/j.apenergy.2021.117987

17. Nonlinear model predictive control of USC boiler-turbine power units in flexible operations via input convex neural network

Author:
Hengyi Zhu; Peng Tan; Ziqian He; Cheng Zhang; Qingyan Fang; Gang Chen
Source:
Energy 2022 v.255 pp. 124486
ISSN:
0360-5442
Subject:
control methods,   etc   ; energy; enthalpy; linear models; nonlinear models; steam;     Show all 6 Subjects
Abstract:
... Coordinated control of an ultra-supercritical (USC) boiler-turbine unit in the flexible-operation mode is challenging because of internal nonlinearity, various unknown disturbances, and the strong-coupled multivariable behavior of the unit. A novel nonlinear model predictive control (NMPC) approach is proposed to improve the flexibility of the USC unit, which introduces an input convex neural netw ...
DOI:
10.1016/j.energy.2022.124486

18. Procedure to explore a ternary mixture diagram to find the appropriate gradient profile in liquid chromatography with fluorescence detector. Application to determine four primary aromatic amines in napkins

Author:
M.M. Arce; D. Castro; L.A. Sarabia; M.C. Ortiz; S. Sanllorente
Source:
Journal of chromatography 2022 v.1676 pp. 463252
ISSN:
0021-9673
Subject:
control methods,   etc   ; acetonitrile; aniline; chemometrics; fluorescence; methanol; models; paper;     Show all 8 Subjects
Abstract:
... The purpose of this work is to develop a tool to search for a gradient profile with ternary or binary mixtures in liquid chromatography, that can provide well-resolved chromatograms in the shortest time for multianalyte analysis. This approach is based exclusively on experimental data and does not require a retention time model of the compounds to be separated. The methodology has been applied for ...
DOI:
10.1016/j.chroma.2022.463252

19. Targeting malaria parasites inside mosquitoes: ecoevolutionary consequences

Author:
Tsukushi Kamiya; Douglas G. Paton; Flaminia Catteruccia; Sarah E. Reece
Source:
Trends in parasitology 2022 pp. -
ISSN:
1471-4922
Subject:
control methods,   etc   ; antimalarials; evolution; humans; longevity; malaria; parasitology; risk;     Show all 8 Subjects
Abstract:
... Proof-of-concept studies demonstrate that antimalarial drugs designed for human treatment can also be applied to mosquitoes to interrupt malaria transmission. Deploying a new control tool is ideally undertaken within a stewardship programme that maximises a drug's lifespan by minimising the risk of resistance evolution and slowing its spread once emerged. We ask: what are the epidemiological and e ...
DOI:
10.1016/j.pt.2022.09.004

20. International Environmental Agreement and Trade in Environmental Goods: The Case of Kyoto Protocol

Author:
Trang My Tran
Source:
Environmental and resource economics 2022 v.83 no.2 pp. 341-379
ISSN:
0924-6460
Subject:
control methods,   etc   ; Japan; carbon; exports; protocols; technology transfer; treaties; Germany;     Show all 8 Subjects
Abstract:
... The Kyoto Protocol has received much criticism for its effectiveness as well as the spillover effect (i.e. carbon leakage and competitiveness loss). This paper provides the first evidence for the effect of the Kyoto Protocol on the bilateral trade in environmental goods, which can mitigate and prevent environmental damage. Using the generalized synthetic control method, I construct the counterfact ...
DOI:
10.1007/s10640-021-00625-2