bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intelligent Identification of Convective Cloud Cores and Surrounding Stratiform Clouds
Authors: Wenting Song 
Published: August 2021

Abstract
Convective cloud cores and surrounding stratiform clouds in the same precipitation process were identified by Lagrange tracking method to reveal differences of cloud microphysical processes in areas with different development intensities in the same precipitation system. Firstly, a scale operator was introduced for post-processing of the tracking method to determine the height most appropriate for tracking in 3D data. Secondly, different identification thresholds were set according to the radar reflectivity factor. Regions with the factor greater than 40dBZ were defined as convective cloud cores, and those with the factor more than 20dBZ and less than 40dBZ as stratiform clouds around cores. Finally, analysis was conducted on their differences in the motion trajectory, duration and development range in a weather process. The results showed that changes in the duration and the areas of convective cloud cores and stratiform clouds reflected the intensity of microphysical processes in different regions; the microphysical process of the regions with short-duration but large-area convective cloud cores were more intense, while that of the regions with long-life and small-area cores developed more smoothly.
A review of hybrid electric vehicle energy management strategy based on road condition information
Authors: Meng Zaiqiang , Tang Guoqiang , Zhou Qianlu , Liu Bin 
Published: August 2021

Abstract
Energy management strategy (EMS) plays a vital role in energy saving for hybrid electric vehicle (HEV), which incorporates the advantages of both fuel vehicles and pure electric vehicles. A desirable EMS can not only help the vehicle meet the power demand, but also effectively reduce fuel consumption and realize long-distance driving. At present, most of existing EMSs are optimized based on specific driving conditions, which makes these strategies not adaptive to the dynamic real-world driving conditions. This paper analyses some traditional EMSs of HEV based on fixed road conditions, and points out their shortcomings and future development trends.
Research on Large-scale Air-conditioning Loads Participating in Peak Shaving
Authors: Ding Yifan , Xi Weimin , Ma Yahui , Jiang Haiyan 
Published: August 2021

Abstract
As a type of the elastic load, the demand-side controllable air-conditioning load can respond to electricity demand based on incentives or electricity prices. By adopting a reasonable control strategy for the optimal combination of controllable air-conditioning load groups, the air-conditioning loads of large-scale buildings can be guided to execute various dispatch commands of the power grid in the best response to electricity consumption. This paper constructs an air-conditioning load model. On this basis, a day-ahead dispatch model of the power grid with the extensive participation of central air-conditioning loads is established. The case shows that the participation of large-scale air-conditioning load in demand response can effectively reduce the peak load and realize the economic operation of the system.
Application of CPLEX in beer production planning
Authors: Zhang Jiaqi 
Published: August 2021

Abstract
In order to enhance the competitiveness of the industry, enterprises will continue to improve the production and operation management plan by means of reasonable allocation of internal and external resources, improving production technology, shortening the manufacturing cycle and reducing production costs. In this paper, a complex production planning problem of beer is introduced. Based on the production of beer enterprises, the production processes of beer are analyzed. The production scheduling model of beer enterprises is established, and the production plan is analyzed and solved by CPLEX solver.
Design of Electric Carbon Coordination Trading Mode of Vehicle-to-Grid Subjects under the Background of Carbon Neutrality
Authors: Ying Zhiwei , Zhang Aifeng , Wang Yong , Shang Shanshan , Du Xin , Xi Yue , Liu Dunnan 
Published: August 2021

Abstract
Under the goal of carbon peak and carbon neutral, it is of far-reaching significance to focus on the coordinated trading mode design of the Vehicle-to-Grid subjects in the electricity market and carbon market. However, there are few researches on the Vehicle-to-Grid subjects participating in the trading mode of electric carbon market by predecessors. Therefore, this paper, by combing the basic connotation of the Vehicle-to-Grid subjects, designs the trading mode of the Vehicle-to-Grid subjects in the electricity market and the carbon market, and further discusses how to get through the coordinated trading mode of the Vehicle-to-Grid subjects in the electric carbon market. In this way, relevant suggestions are given to strengthen the technical support of the Internet of Vehicles platform and improve the market trading mechanism.
Prediction of container throughput of Dalian Port Based on factor analysis and ARIMA model
Authors: Yao Weikai 
Published: August 2021

Abstract
With the development of global economy, the competition of container throughput in ports in the world is becoming more and more fierce. Therefore, it is necessary to forecast the container throughput and determine the policies and measures earlier. In this paper, we use factor analysis and regression model to analyze the container throughput of Dalian port from 1985 to 2019 and get the main factor. We use ARIMA prediction model to predict the main factor sub coefficient of 2020-2025 and calculate the container throughput of Dalian port from 2020 to 2025. The results show that the throughput growth rate will slow down in the next six years, which is in line with the expectation of the 14th five year plan.
Efficiency evaluation of main ports in Jiangsu Province Based on DEA model
Authors: Cao HongYuan 
Published: August 2021

Abstract
Jiangsu Province is an important port province close to the river and the coast. Its port efficiency plays an important role in the development of regional economy. This paper analyzes the efficiency of major ports in Jiangsu Province in 2017 and 2019 by using DEA model. The results show that some inland ports have some problems such as excess input, insufficient output and unreasonable resource allocation. On this basis, suggestions for improvement are put forward to promote the efficiency of ports in Jiangsu Province.
Analysis on Flood Control Impact Assessment for Linear Project Involving River and Embankment
Authors: Shi Junjun , Chen Qi 
Published: August 2021

Abstract
Aiming at the common problems on flood control impact assessment of linear projects, combined with practical work experience, this paper summarizes and analyzes the characteristics and main impact types of linear projects involving rivers and embankments in recent years, and puts forward the key points of river and embankment impact assessment of linear projects in Zhejiang Province from the aspects of early site selection, construction mode, control factors and remedial measures. It is helpful to improve the quality of flood control impact assessment report, and provide reference for the design, construction, consultation and review of water conservancy department.
Technology and Application Of laneway Strip Filling Mining
Authors: Wan-dong Hao 
Published: August 2021

Abstract
In view of the high cost of back-filling mining in coal mine, the production capacity and filling capacity are not balanced, and the filling operation space is limited, the paper proposed roadway strip type filling mining technology, and discussed the principle of roadway strip filling mining technology, introduced the ventilation method, typical equipment matching, technical advantages, etc. And the paper further introduces the example of coal mining under buildings by using roadway strip filling mining technology in Cha hasu coal mine.
Research on Urban and Rural Environmental Design and Redevelopment – a Case Study of Chengdu
Authors: Zhou Can 
Published: August 2021

Abstract
There is a term called “Heart Land” in the West, and the Midwestern United States is known as the heart of the US in the English-Chinese dictionary. As the saying goes, “The route into Sichuan is more daunting than climbing the blue sky.” Chengdu, as a major inland city in Southwest China, is located in the so-called “Heart Land.” In the design of architectural environment, it blends the old style with the new, the local features with the international, and the urban characteristics with the rural, showing that the city is exceptionally inclusive and diverse.
Quantitative Analysis of the Economic Impact of the Opening of High-speed Railway on Huangshi and Jiujiang
Authors: Wang Wenkai , Hao Shengyue 
Published: August 2021

Abstract
Transportation has always played a pivotal role in economic development and is an important factor driving the economy along the route. This paper actually calculates and analyzes the economic benefits brought by the opening of high-speed rail to Huangshi and Jiujiang. Using the comparison analysis method, the data predicted by the model when the high-speed rail is not opened and the actual data are compared. The results show that the opening of the high-speed railway has a certain promotion impact on the economic development of Huangshi and Jiujiang. However, the research results also show that its impact on the urbanization index is not significant, which is not consistent with the urbanization impact of high-speed railway.
Investigation and Analysis of Transportation Planning and Design of Shanghai Maritime University
Authors: Wang Weihua 
Published: August 2021

Abstract
With the continuous expansion of the scale of China’s colleges and universities and the creasing number of motor vehicles, campus traffic problems are becoming more and more serious. How to balance the four elements of human, vehicle, road and environment is an important content of campus traffic planning. Taking Shanghai Maritime University as an example, this paper analyzes the existing major traffic problems on campus by investigating the layout of campus roads, traffic flow at major intersections, the distribution of traffic signs and the distribution and quantity of parking spaces on campus, and puts forward the strategies for optimizing the campus traffic system.
Study on ground suitability and construction countermeasures of metro shield in China
Authors: Cheng Chihao , Long Guihua 
Published: August 2021

Abstract
Because of unsuited shield type selection, equipment configuration and construction measures, lots of construction problems appeared like clogging, excessive settlement, spewing, abrasiveness, oversized grains and abnormal working parameters. Ground conditions and construction measures encountered in numerous metro projects across China are categorized in order to improve the selection of shields specific to complex ground conditions. Firstly, according to grain-size distribution, diversity of complex ground is classified as four types. Secondly, oriented by ground suitability problems, the four types are divided into eight sub-classes based on the critical geological parameters or conditions. In order to provide an overall view for planning of shield selection, the map of China consisting of metro cities is regionalized according to the above classification. In the end, construction countermeasures for each types are put forward including shield type selection, equipment configuration, soil conditioning and tunneling parameters. Conclusions drawn from the paper can improve current classification for shield tunneling and provide practically targeted references for engineers.
Construction of the landscape ecological security pattern of the Yellow River Delta based on circuit theory
Authors: Shan Rong , Li JianChun 
Published: August 2021

Abstract
With the rapid development of urbanization, land cover and land use patterns have changed, which damages the landscape structure, affects the transfer of material and energy, and reduces the value of ecosystem services. The construction of landscape ecological security patterns is an important challenge that could promote species exchange between biological groups and material and energy exchange between landscape elements and ensure regional ecological security. Few studies have focused attention on the randomness of species to path selection, thus failing to objectively reflect the process of species migration and diffusion. In this paper, according to the circuit principle, the current value between nodes was used to extract strategic points, and the ecological corridor was screened by the cost weighted distance, which is more in line with the analysis framework of species’ random selection of a migration path. As an important place for human activities, river basins are important areas connecting surface water with groundwater, land cover and ecosystems. Based on the circuit principle, the landscape ecological security pattern of the river basin was constructed in this paper, which provided some new ideas for protection and management. Taking the Yellow River Delta in the lower reaches of the Yellow River in China as an example, the main conclusions were as follows: (1) The ecological sources of the Yellow River Delta were 34, with forest land and lakes as the main sources, and they were crucial to the stability of the regional ecological security pattern. A total of 49 ecological corridors were identified, among which 32 were key corridors and the rest were potential corridors. The key corridors throughout the whole region need priority protection and can be used as a core area for the observation and monitoring of natural resources. (2) Based on the circuit principle, 14 pinch points and 19 barrier points were identified, indicating that regional habitat connectivity must be further improved. Based on the concept of natural resources life community of mountains, rivers, forests, farmland, lakes and grass, the resource optimization strategy is proposed for the ecological security pattern, which is of great practical significance to maintaining the integrity of the river basin ecosystem.
Research on water ecological security in alar section of tarim river basin
Authors: Guona Luo , Xiancan Li , Yanchun Wang , Xiaoyu Zhang , Huailiang Yu 
Published: August 2021

Abstract
As the mother river of southern xinjiang, the tarim river is the lifeline of the economy, natural ecology and the lives of people of all ethnic groups in the southern xinjiang oasis. Alar city is located in the upper reaches of the tarim river, with arid climate, scarce precipitation throughout the year, strong evaporation, lack of water resources, and fragile ecological environment. The deterioration of the water quality in the tarim river basin, the sandification of the revetment, the serious soil erosion, and the deteriorating ecological environment have become the main factors restricting the sustainable development of the social economy and ecological environment of alar city. This research investigates the current situation of the ecological environment of the tarim river basin, and makes the following research on the alar section of the tarim river through GIS spatial analysis:( 1 ) Construct an ecological corridor in the study area;( 2 ) Designate an ecological protection zone; ( 3 ) Shaping the pattern of water ecological security; (4) The task of ecological restoration is determined in order to provide a theoretical basis and scientific basis for the comprehensive development and utilization of resources in the tarim river basin, soil and water conservation, and ecological environment protection.
Analysis of the impact of the urban traffic noise on the vertical distribution of high-rise residential buildings
Authors: Gao Chan , Eunyoung Kim , Zhao Genfeng , Gao Sen 
Published: August 2021

Abstract
With the rapid growth of China’s urban population, the construction of its urban transportation network will be more vigorous than ever. The influence of road traffic noise on urban residential areas has become increasingly prominent. However, most of the current research is limited to the analysis of the flat sound field, leaving the research on high-rise residential vertical sound not so detailed. This study aims to find out the vertical sound field distribution law of traffic noise to high-rise buildings on the sides of the road. We monitored the environmental traffic noise effects in a high-rise residential area in Zhejiang Province and established a high-rise residential model in the SoundPLAN Software to simulate the vertical sound field distribution of traffic noise. The law is that the value rises sharply to the peak in the range of 0-7F (23.0m) then decreases slowly as the height increases. We also made a linear analysis of the noise data to arrive at a linear regression equation. This study provides a new way of taking noise prevention and control into consideration in high-rise housing. Special attention must be given to the isolation of traffic noise on floors by selecting soundproof doors and well-functioning windows. This strategy of creating a high-quality sound environment in a residential area can be put forward to improve people’s lifestyle and environment.
Root hair phenotypes influence nitrogen acquisition in maize
Authors: Saengwilai Patompong , Strock Christopher , Rangarajan Harini , Chimungu Joseph , Salungyu Jirawat , Lynch Jonathan P 
Published: August 2021

AbstractBackground and AimsThe utility of root hairs for nitrogen (N) acquisition is poorly understood.MethodsWe explored the utility of root hairs for N acquisition in the functional–structural model SimRoot and with maize genotypes with variable root hair length (RHL) in greenhouse and field environments.Key ResultsSimulation results indicate that long, dense root hairs can improve N acquisition under varying N availability. In the greenhouse, ammonium availability had no effect on RHL and low nitrate availability increased RHL, while in the field low N reduced RHL. Longer RHL was associated with 216 % increase in biomass and 237 % increase in plant N content under low-N conditions in the greenhouse and a 250 % increase in biomass and 200 % increase in plant N content in the field compared with short-RHL phenotypes. In a low-N field environment, genotypes with long RHL had 267 % greater yield than those with short RHL. We speculate that long root hairs improve N capture by increased root surface area and expanded soil exploration beyond the N depletion zone surrounding the root surface.ConclusionsWe conclude that root hairs play an important role in N acquisition. We suggest that root hairs merit consideration as a breeding target for improved N acquisition in maize and other crops.
Myotomy in sigmoid megaesophagus: is it applicable? A systematic review and meta-analysis
Authors: Orlandini Marina Feliciano , Serafim Maria Carolina Andrade , Datrino Letícia Nogueira , Tavares Guilherme , Tristão Luca Schiliró , dos Santos Clara Lucato , Bernardo Wanderley Marques , Tustumi Francisco 
Published: August 2021

Summary
Introduction: Achalasia may evolve to sigmoid megaesophagus in 10–15% of patients and is usually treated with esophagectomy, which has high morbi-mortality. Many surgeons debate the applicability of the Heller myotomy for treating sigmoid megaesophagus. This study intents to analyze the effectiveness of myotomy for treating patients with sigmoid megaesophagus. Methods: A systematic review and meta-analysis was conducted in PubMed, Cochrane, Lilacs and Embase alongside manual search of references. The inclusion criteria were clinical trials, cohort, case-series; patients with sigmoid megaesophagus and esophageal diameter ≥ 6 cm; and patients undergoing primary myotomy. The exclusion criteria were reviews, case reports, cross-sectional studies, editorials, letters, congress abstracts, full-text unavailability; previous surgical treatment for achalasia; and pediatric or animal model studies. No restrictions on language and date of publication, and no filters were applied. Subgroups analyses were performed to assess the laparoscopic myotomy perioperative outcomes. Besides, subgroup analyses were performed to assess the long-term outcomes of the studies with a follow-up time &gt; 24 months. To verify heterogeneity, the I2 test was used. The random effects were applied, and the fixed model was evaluated as sensitivity analysis. To assess risk of bias and certainty of evidence, the tools ROBINS-I and GRADE were used, respectively. Registration number: CRD42020199667. Results: Sixteen articles were selected, encompassing 350 patients. The mean age ranged from 36 to 61 years old, and the mean follow-up ranged from 16 to 109 months. Complications rate was 0.08 (CI: 0.040–0.153; P = 0.01). Need for retreatment rate was 0.128 (CI: 0.031–0.409; P = 0.01). The probability of good or excellent outcomes after myotomy was 0.762 (CI: 0.703–0.812; P &lt; 0.01). Postoperative mortality rate was 0.008 (CI: 0.004–0.015; P &lt; 0.01). Conclusion: Surgical myotomy is an option for avoiding esophagectomy in achalasia, with a low morbi-mortality rate and good results. It is effective for most patients and only a minority will demand retreatment.
Coronary artery bypass surgery in the UK, trends in activity and outcomes from a 15-year complete national series
Authors: Ohri Sunil K , Benedetto Umberto , Luthra Suvitesh , Grant Stuart W , Goodwin Andrew T , Trivedi Uday , Kendall Simon , Jenkins David P 
Published: August 2021

Abstract

OBJECTIVES
The aim of this study was to review the UK national trends in activity and outcome in coronary artery bypass graft (CABG) over a 15-year period (2002–2016).

METHODS
Validated data collected (2002–2016) and uploaded to National Institute for Cardiovascular Outcomes Research were used to generate summary data from the National Adult Cardiac Surgery Audit Database for the analysis. Logistic European System of Cardiac Operative Risk Evaluation was used for risk stratification with recalibration applied for governance. Data were analysed by financial year and presented as numerical, categorical, %, mean and standard deviation where appropriate. Mortality was recorded as death in hospital at any time after index CABG operation.

RESULTS
A total of 347 626 CABG procedures (282 883 isolated CABG, 61 109 CABG and valve and 4132 redo CABG) were recorded. Over this period annual activity reduced from 66.6% of workload to 41.7%. The mean age for isolated CABG was 65.7 years. The mean log European System of Cardiac Operative Risk Evaluation was 3.1, 5.9 and 23.2 for elective, urgent and emergency isolated CABG, respectively. There was a decline in the observed mortality for all procedures. Overall mortality for isolated CABG surgery is now 1.0% and only 0.6% for elective operations.

CONCLUSIONS
Quality of care and risk-adjusted mortality rates have consistently improved over the last 15 years despite the increasing risk profile of patients. There have been a consistent decline in overall case volumes and a three-fold increase in elderly cases.