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Hybrid Deep Learning Architecture to Forecast Maximum Load Duration Using Time-of-Use Pricing Plans

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Computers, Materials & Continua 2021年第7期68卷 283-301页

作者： Jinseok kim Babar Shah ki-Il kim Department of KDN Electric power IT Research Institute KEPCO KDNNaju58217Korea College of Technological Innovation Zayed UniversityAbu DhabiUAE Department of Computer Science&Engineering Chungnam National UniversityDaejeon34134Korea

Load forecasting has received crucial research attention to reduce peak load and contribute to the stability of power grid using machine learning or deep learning ***,we need the adequate model to forecast the maximum load duration based on time-of-use,which is the electricity usage fare policy in order to achieve the goals such as peak load reduction in a power ***,the existing single machine learning or deep learning forecasting cannot easily avoid ***,a majority of the ensemble or hybrid models do not achieve optimal results for forecasting the maximum load duration based on *** overcome these limitations,we propose a hybrid deep learning architecture to forecast maximum load duration based on *** results indicate that this architecture could achieve the highest average of recall and accuracy(83.43%)compared to benchmark *** verify the effectiveness of the architecture,another experimental result shows that energy storage system(ESS)scheme in accordance with the forecast results of the proposed model(LSTM-MATO)in the architecture could provide peak load cost savings of 17,535,700 KRW each year comparing with original peak load costs without the ***,the proposed architecture could be utilized for practical applications such as peak load reduction in the grid.

关键词： Load forecasting deep learning hybrid architecture maximum load duration time-of-use

Quality Assessment and Forecast Sensitivity of Global Remote Sensing Observations

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Advances in Atmospheric Sciences 2017年第3期34卷 371-382页

作者： Swapan MALLICK Devajyoti DUTTA ki-Hong MIN School of Earth System Sciences Kyungpook National UniversityDaegu 41566South Korea National Centre for Medium Range Weather Forecasting Earth System Science OrganizationNoida 201309India

The satellite-derived wind from cloud and moisture features of geostationary satellites is an important data source for numerical weather prediction （NWP） models. These datasets and global positioning system radio occultation （GPSRO） satellite radiances are assimilated in the four-dimensional variational atmospheric data assimilation system of the UKMO Unified Model in India. This study focuses on the importance of these data in the NWP system and their impact on short-term 24-h forecasts. The quality of the wind observations is compared to the short-range forecast from the model background. The observation increments （observation minus background） are computed as the satellite-derived wind minus the model forecast with a 6-h lead time. The results show the model background has a large easterly wind component compared to satellite observations. The importance of each observation in the analysis is studied using an adjoint-based forecast sensitivity to observation method. The results show that at least around 50% of all types of satellite observations are beneficial. In terms of individual contribution, METEOSAT-7 shows a higher percentage of impact （nearly 50%）, as compared to GEOS, MTSAT-2 and METEOSAT-10, all of which have a less than 25% impact. In addition, the impact of GPSRO, infrared atmospheric sounding interferometer （IASI） and atmospheric infrared sounder （AIRS） data is calculated. The GPSRO observations have beneficial impacts up to 50 km. Over the Southern Hemisphere, the high spectral radiances from IASI and AIRS show a greater impact than over the Northern Hemisphere. The results in this study can be used for further improvements in the use of new and existing satellite observations.

关键词： wind observation increment observation impact forecast sensitivity to observation

Nanomaterials for the abatement of cadmium (Ⅱ) ions from water/ wastewater

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Nano Research 2019年第7期12卷 1489-1507页

作者： Kumar Vikrant Vanish Kumar Kowsalya Vellingiri ki-Hyun kim Department of Civil and Environmental Engineering Hanyang University222 Wangsimni-roSeoul 04763Republic of Korea National Agri-Food Biotechnology Institute (NABI) S.A.S. NagarPunjab 140306India Environmental and Water Resources Engineering Division Department of Civil Engineering IIT MadrasChennai 600036India

The rapid rise of modern industry is the source of unchecked effluents containing many pernicious heavy metals (e.g.,cadmium).To rehabilitate the ecology,food resources,and health of humans and animals,various conventional methodologies are being used in wastewater treatment facilities for the abatement of ***,the development of advanced,economical,and efficient adsorbents is needed because of the many shortcomings of conventional methods (e.g.,high cost,intensive operation,and inefficiency).Recent advancements in materials science and chemistry have introduced the use of nanomaterials,which possess very high specific surface areas and multiple functionalities,for the removal of specific targets such as *** review explores the recent developments and trends in nanomaterial adsorption technology for the mitigation of *** paper further surveys the present obstacles and future opportunities for the advancement of nanomaterial-based technologies in the area of water treatment.

关键词： nanomaterials cadmium adsorption pollution control water purification heavy metal

Numerical Studies on Fire-induced Thermal Plumes

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Journal of Thermal Science 2005年第4期14卷 374-381页

作者： Junmei LI Yanfeng LI Wan ki CHOW Huairong HUANG The College of Architecture and Civil Engineering Beijing University of Technology Beijing 100022China Department of Building Services Engineering The Hong Kong Polytechnic University Hong Kong China

Most of the expressions describing fire plumes reported in the literature are known to be based on experiments. Due to different experimental methods, the geometry of the fire sources, fuel types and surrounding conditions, it is difficult to derive a comprehensive picture of a plume with its temperature and velocity fields on the basis of existing theoretical work. Computational Fluid Dynamics （CFD）, which is regarded as a practical engineering tool in fire engineering by the experts, is sure to be able to give more details of the plume behavior under various situations. Aerodynamics for thermally-induced plumes will be studied numerically with CFD. Four typical axisymmetric plume equations will be assessed in this paper, and investigations will be useful for fire engineers in designing smoke management systems in an affordable fashion. This is a critical point in implementing engineering performance-based fire code.

关键词： thermal plume fire CFD smoke management.

Extraction and Purification of Depigmenting Agents from Chinese Plants

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Chemical Research in Chinese Universities 2006年第2期22卷 162-167页

作者： AHN So-young ROW Kyung-ho kiM Eun-ki School of Chemical and Biological Engineering Center for Advanced Bioseparation Technology Inha University Nam-Ku Incheon 402-751 Korea

Depigmenting agents were solvent-extracted and purified by preparative and analytical HPLC from three Chinese plants; Chrysanthemum morifolium Ramat（ Xizang Caijuhua）, Rhodiola sachalinensis, and Terminalia chebula Retzius. Four fractions obtained from the ethyl ether layer of C. m. Rama and two fractions from the ethyl acetate layer of Rhodiola salientness show depigmenting effects. At 8 200, the ethyl acetate layers of Chrysanthemum morifolium Ramat, Rhodiola sachalinensis and the methanol extract of Terminalia chebula Retzius, can inhibit the melanin production of mouse B16 melanoma cells by 92%, 60% and 90%, respectively, whereas 46% inhibition was observed by commercially available depigmenting agents（arbutin）. These results show the potential of these three Chinese plants as a novel resource for depigmenting agents in the cosmetic industry.

关键词： Chrysanthemum Morifolium Ramat Rhodiola Sachalinensis Terminalia Chebula Retzius Melanin Inhibitory Effect HPLC

Copper catalyzed/mediated direct B–H alkenylation/alkynylation in carboranes

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Science China Chemistry 2019年第1期62卷 74-79页

作者： Yu Chen Yik ki Au Yangjian Quan Zuowei Xie Department of Chemistry and State Key Laboratory of Synthetic Chemistry The Chinese University of Hong Kong

Base metal catalyzed regioselective cage B–H functionalization has been achieved. Under the assistance of a bidentate directing group, Cu-catalyzed [4+2] annulation of carboranyl amides with internal alkynes affords unprecedented C,B-substituted carborane-fused-pyridone derivatives, whereas the use of terminal alkynes leads to B–H/C(sp)–H dehydrocoupling products. The isolation and structural identification of a notably stable Cu(Ⅰ) intermediate shed light on the reaction mechanism, which is proposed to involve a Cu(Ⅲ) intermediate.

关键词： [4+2] annulation alkynylation B-H activation base metal catalysis carborane

Regional economic assessment of a novel place-based model for sustainable food systems

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Geography and Sustainability 2024年第2期5卷 220-229页

作者： Susanna Kujala Kari Koppelmäki University of Helsinki Ruralia InstituteKampusranta 9 C 60320SeinäjokiFinland University of Helsinki Ruralia InstituteLönnrotinkatu 750100MikkeliFinland Wageningen University&Research Farming Systems Ecology GroupDroevendaalsesteeg 16708PBWageningenThe Netherlands

Several actions from both the environmental and human viewpoints have already been made to meet the sustainability goals targeted at food ***,new place-based ideas to improve sustainability are *** symbiosis(AES),a novel food system model,is an example of a suggested system-level change to attain sustainability targets;it is a symbiosis of food production and processing using renewable energy that uses its own *** has already been found advantageous from the ecological and biophysical viewpoints,but a regional economic evaluation of the model is still ***,the aim of our paper is to assess the regional economic impact of a possible systemic change in the food system using the network of agroecological symbiosis(NAES)as an *** applied scenarios representing different ways of moving towards envisioned NAES models in Mäntsälä,Finland,and a computable general equilibrium model to evaluate the regional economic *** to our results,both regional economy and employment would increase,and the regional production base would diversify with NAES implementation applied to the region,but the extent of the benefits varies between *** scenario that includes change in both public and private food demand,production of bioenergy and utilization of by-products would cause the largest ***,realizing NAES requires investments that may influence the actual implementation of such ***,a change towards NAES can promote an economically and spatially just transition to sustainability,as NAES seems to be economically most beneficial for rural areas.

关键词： Sustainability Regional economy Localized food system Renewable energy Circularity

Management of antiviral drug resistance in chronic hepatitis B

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World Journal of Gastroenterology 2014年第33期20卷 11641-11649页

作者： ki Bae Bang Hong Joo kim Department of Internal Medicine Sungkyunkwan University Kangbuk Samsung Hospital Seoul 110-746 South Korea

Rescue antiviral treatment for patients with resistance to preexisting nucleos(t)ide analogues remains a clinical challenge. The correct choice of a first-line treatment of high potency and with a high genetic barrier to achieve sustained long-term suppression of viral replication provides the best chance of preventing treatment failure and the emergence of drug resistance. The management of treatment failure and drug resistance requires a precise and accurate clinical and virologic monitoring. Combination treatment with antiviral drugs that belong to different groups is associated with a lower chance of developing resistance to rescue drugs. To guarantee better control of viral replication in patients with drug resistance, the addition of another drug without a cross resistance profile should be given as early as possible, preferably at the time when genotypic resistance emerges. Long-term surveillance for treatment efficacy and possible emergence of drug resistance should be continued to prevent the emergence of multidrug-resistant strains.

关键词： Chronic hepatitis B Antiviral resistance Rescue treatment Multidrug resistance Cross resistance

Who will carry out the tests that would be necessary for proper safety evaluation of food emulsifiers?

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Food Science and Human Wellness 2019年第2期8卷 126-135页

作者： Katalin FCsáki∗ Éva Sebestyén National Food Chain Safety Office Directorate for Food Safety Risk AssessmentPO BOX 407H-1537 BudapestHungary

Surfactant food emulsifiers are among the most extensively used food *** all authorized food additives,emulsifiers have been evaluated by risk assessors,who consider them as ***,there are growing concerns among scientists about their possible harmful effects on intestinal barriers and *** is also suggested that emulsifier consumption might be one of the main causes of the rising incidence of a number of diseases,such as allergic diseases,celiac disease,type I diabetes and Crohn’s ***,it has recently been suggested that emulsifier consumption might contribute to the development of metabolic syndrome and can promote colitis-associated colorectal cancer *** paper provides an overview of the current scientific knowledge on possible effects of surfactant emulsifiers on intestinal barriers and also of regulatory risk assessment *** main objective is to reveal the reasons for the discrepancies between the opinions of risk assessors and the scientific *** would like to draw the attention of the academic world to the need of specific in vivo and/or clinical studies for each emulsifier in order to help risk assessors make adequate evaluations and rule out with certainty that authorized food emulsifiers pose a safety concern to consumers’health.

关键词： Food emulsifiers Surfactants Intestinal barriers Crohn’s diseases Microbiota Risk assessment EFSA