UAVC: A New Method for Correcting Lidar Overlap Factors Based on Unmanned Aerial Vehicle Vertical Detection

A method to calibrate the overlap factor of Lidar is proposed, named unmanned aerial vehicle correction (UAVC), which uses unmanned aerial vehicles (UAVs) to detect the vertical distribution of particle concentrations. The conversion relationship between the particulate matter concentration and the aerosol extinction coefficient is inverted by the high-altitude coincidence of the vertical detection profiles of the UAV and Lidar. Using this conversion relationship, the Lidar signal without the influence of the overlap factor can be inverted. Then, the overlap factor profile is obtained by comparing the signal with the original Lidar signal. A 355 nm Raman-Mie Lidar and UAV were used to measure overlap factors under different weather conditions. After comparison with the Raman method, it is found that the overlap factors calculated by the two methods are in good agreement. The changing trend of the extinction coefficient at each height is relatively consistent, after comparing the inversion result of the corrected Lidar signal with the ground data. The results show that after the continuously measured Lidar signal is corrected by the overlap factor measured by this method, low-altitude aerosol information can be effectively obtained.

Species Assemblage of Birds’ Community in Protected Areas of Delhi-NCR

Green spaces in cities especially in the capital city of India provide necessary recreational, social and psychological benefits to stressing residents of the city. Cities and towns depict the extreme human-modified environments with only remnants of the original habitats present. Study undertaken to know the abundance, diversity and species richness of avian fauna in urban protected landscapes of Delhi, NCR. In the following paper, the methods include data is extracted from e-Bird of past 40 years to illustrate the changing trend of bird species from 1980-2019 from 7 greenspaces of Delhi-NCR which are Aravalli Biodiversity Park, Asola Bhatti Wildlife Sanctuary, Deer Park, Dheerpur Wetland, National Zoological Park, Northern Ridge, Okhla Bird Sanctuary, Sanjay Van, Yamuna Biodiversity Park and analysed as box plots using PAST. The result showed a varied trend from 1980-2019, which included the usage of e-Bird by the period. The result indicated that the recent decade is well updated with data on e-Bird, hence several birds’ individual is maximumly observed from 2011-2019. The study has shown the wavy trend from 1980-2019 in species composition in the capital city of India. This also suggest that people have started recording observation on a single platform and shown interest in last decade. This study will lead to taking the necessary step to maintain the avian biodiversity in the green spaces of the capital city- Delhi-NCR.

Intension, Current Implementation and Improvement Path of Instructional Leadership: A school Case of Hong Kong

This paper aims to analyze the implementation status of instructional leadership of a HK primary school that benefits in mid-ranking and mainly uses instructional leadership to develop their curriculums. Instructional leadership is the result of introducing leadership concepts into the teaching field, and it reflects the changing trend of school management to a certain extent. At present, the research on instructional leadership is limited to the principal's leadership, which limits the overall function of instructional leadership. By investigating the actuality of school and the implementation of school policies and programs, the paper deeply analyzes the existed problems in a Hong Kong school and offers optimization suggestions: strengthen the school distributive leadership construction, promote the professional development of teachers and curriculums, establish a diversified evaluation system, develop an organizational culture of democratic cooperation and improve the curriculum leadership of principals.

Climate Change and Variability in the Northeastern Himalayan Region of India

Mountainous regions are considered highly vulnerable to the affects of climate change. The extent of change and variability of climatic parameters is still unexamined in many remote mountainous areas. This paper aims in understanding the change in pattern of rainfall and temperature for a period of 30 years in Mizoram. The analysis of time series changing trend in climatic variables is carried out by using Coefficient of Variation (CV), Mann-Kendall (M-K) and Sen’s Slope estimator. The analysis reveals that high variation is observed for both the variables in all the decadal, three decadal and seasonal change. The CV analysis shows that the highest seasonal rainfall variation occurs during winter and the highest seasonal temperature variation occurs during spring. Mann-Kendall test shows a significant change in rainfall with November showing the highest negative trend of rainfall. The temperature trend analysis in the study also reveals drastic change of temperature. An understanding of climatic change, trend and variability helps in predicting for better natural resources from the susceptibility of climate change.

Urban-rural disparity in cancer mortality and changing trend in Tianjin, China, during 1999 and 2016

Objective Compare the urban-rural disparity in cancer mortality and changing trend during the past 18 years in Tianjin, China. Methods Cancer death data were obtained from Tianjin All Cause of Death Registration System (CDRS), which covers the whole population of Tianjin. We calculated and compared the constituent ratio of cancer deaths, age-standardized mortality rate(ASR)and changing trends between urban and rural areas. Results From 1999 to 2016, a total of 245,744 cancer deaths were reported, accounting 21.7% of all deaths in Tianjin. The ASR of total cancer mortality was higher in urban areas than in rural areas. A total of 33,739 persons were avoided dying of cancers in rural area compared to the urban death level from 1999 to 2016, which was 40.1% compare to the current level of rural areas. But the gap between urban and rural areas became narrowed gradually. The urban-rural ratios (urban/rural) of total cancer mortality changed from 1.76 (125.7/71.5)[95%CI,1.67,1.84] in 1999 to 1.11 (99.6/90.0)[95%CI,1.06,1.15] in 2016. The ASR of lung, liver and esophagus cancer became higher in rural areas than in urban areas in 2016. Conclusion Cancer transition was obviously occurred in Tianjin and showed different speeds and big gap between urban and rural areas. Much more attention was needed to pay in rural areas which still have increasing trends in most cancers mortality recently.

Numerical Simulation of Combustion and Characteristics of Fly Ash and Slag in a “V-type” Waste Incinerator

This study is focused on a “V-type” waste incinerator for municipal solid waste (MSW) combustion. Computational fluid dynamics (CFD) methods are used to study the MSW combustion process. The characteristics of fly ash and slag are analyzed by using a laser particle analyzer, scanning electron microscope, X-ray fluorescence, and X-ray diffraction. The results show that the error between the CFD simulation data and measured data is less than 10%, and the changing trend of the combustion process is well-modeled. The fly ash mainly has an irregular spherical or ellipsoid structure, whereas the slag mainly has an irregular porous structure. The main constituents of the ash and slag are CaO and SiO2, along with heavy metal elements such as Cu, Pb, and Cr.

False Sincerity: College Students' Ritualistic Praise from the Perspective of Interactive Ritual Chains

In the modern society where the pressure of interpersonal communication is increasing, the ritualistic interactions represented by mutual praise reinterprets the interpersonal communication behavior of youth groups to some extent. In traditional interpersonal interaction, the connotation of sincerity, affirmation and identification represented by "praise" has been deprived and replaced. According to the needs of social interaction and individual emotional needs, college students have given new connotation to "praise", showing a changing trend from sincere praise to deliberate flattering. Based on this, this paper puts forward the concept of "ritualistic praise", and analyzes the causes and influences of this phenomenon from the perspective of interactive ritual chains, to get a glimpse of the emotional life patterns of young people in the context of modern interpersonal communication.

Generative adversarial network–based real-time temperature prediction model for heating stage of electric arc furnace

For accurately predicting the molten steel temperature of heating stage in electric arc furnace (EAF) in real time, a novel prediction model based on the generative adversarial network (GAN) is proposed in this paper. First, the generator is specially designed based on the simplified energy balance of molten steel combined with long short-term memory (LSTM) network. The sequential smelting variables are used as the input of generator, which is an effective representation of the time-variant EAF operations. Meanwhile, the discriminator is established to indicate the deviation of the changing trend between the generator predicted temperature and the simulated temperature. Here, the simulated temperature is produced according to smelting experience which is a good supplement to the sparse temperature measurements. Subsequently, the loss function of the generator is improved to consider both the accuracy of predicted temperature and the correctness of temperature changing trend. Through alternate training the discriminator and generator, the generator is finally able to predict the temperature of molten steel in real time with a better precision. Experiments with practical data verify the effectiveness of the proposed model.

Analysis of Relationship amongst Money Supply, Prices and Output in India

The paper studies the relationship between Money Supply, Prices and Output by creating a robust VAR Model incorporating the changing trend of the macro-economic variables. The observations were that rate of change of Prices and Money Supply have a direct relationship (in short and long run), rate of change of Price and Private Consumption have an inverse relationship (more significant in long run), and rate of change of Investment and Money Supply have an inverse relationship (significant in long run). The study provides a foundation for understanding of stability and shocks amongst the macro-economic variables which have further scope of exploration in terms of magnitude of absolute change and implicit relationships which exist amongst the variables in the Quantity Theory of Money.