scholarly journals A New Method for Extracting Elevation Information of River System from Contours

2019 ◽  
Vol 2 ◽  
pp. 1-7
Author(s):  
Guifang He ◽  
Minshi Liu
Keyword(s):  
River Flow ◽  
Spatial Relationship ◽  
River System ◽  
New Method ◽  
River Section ◽  
Trend Surface ◽  
Existing Problems ◽  
Logical Error ◽  
Conventional Methods ◽  
Low Efficiency

<p><strong>Abstract.</strong> Considering the existing problems in methods of extracting elevation in river system, such as low efficiency, low accuracy, elevation logic errors and other issues, this paper proposes a new method of elevation extraction based on contours. Firstly, the spatial relationship between river system and contours is constructed to improve the intersection efficiency. Secondly, the accuracy of river system elevation can be improved and river flow logical error can be avoided by using the method of interpolation of trend surface of the river section. And then, the river tree is established to avoid the logical error of river system. Many comparison experiments about efficiency, elevation accuracy and elevation logical error between this method and other two conventional methods have been carried out, and the results show that both accuracy and efficiency can be improved and there is no logical error of elevation by this method.</p>

Morphotectonic Analysis of Tanjung Bungo Area Based on Geological Structure Control, Central Sumatera Basin

2020 ◽  
Author(s):  
D., A., L., A. Putri
Keyword(s):  
Natural Resources ◽  
River Flow ◽  
Measurement Data ◽  
River System ◽  
Flow Patterns ◽  
Source Rocks ◽  
Aerial Photographs ◽  
Morphological Data ◽  
Tectonic Activity ◽  
Geological Structures

Tectonic activity in an area could result in various impacts such as changes in elevation, level of slope percentages, river flow patterns and systems, and the formation of geological structures both locally and regionally, which will form a new landscape. The tectonic activity also affects the stratigraphic sequences of the area. Therefore, it is necessary to study morphotectonic or landscape forms that are influenced by active tectonic activities, both those occur recently and in the past. These geological results help provide information of the potential of natural resources in and around Tanjung Bungo area. Morphological data are based on three main aspects including morphogenesis, morphometry, and morphography. The data are collected in two ways, the first is field survey by directly observing and taking field data such as measuring geological structures, rock positions, and outcrop profiles. The second way is to interpret them through Digital Elevation Model (DEM) and aerial photographs by analyzing river flow patterns and lineament analysis. The field measurement data are processed using WinTensor, Dips, and SedLog Software. The supporting data such as Topographic Maps, Morphological Elevation Maps, Slope Maps, Flow Pattern Maps, and Lineament Maps are based on DEM data and are processed using ArcGis Software 10.6.1 and PCI Geomatica. Morphotectonically, the Tanjung Bungo area is at a moderate to high-class level of tectonic activity taken place actively resulted in several joints, faults, and folds. The formation of geological structures has affected the morphological conditions of the area as seen from the development of steep slopes, structural flow patterns such as radial, rectangular, and dendritic, as well as illustrated by rough surface relief in Tanjung Bungo area. This area has the potential for oil and gas resources as indicated by the Telisa Formation, consisting of calcareous silts rich in planktonic and benthonic fossils, which may be source rocks and its contact with the Menggala Formation which is braided river system deposits that could be good reservoirs. Further research needs to be done since current research is only an interpretation of surface data. Current natural resources being exploited in Tanjung Bungo region are coals. The coals have thicknesses of 5-7 cm and are classified as bituminous coals.

DEVELOPMENT OF HIGHER EDUCATION IN UKRAINE IN THE CONTEXT OF RISKS AND CHALLENGES

2018 ◽  
Vol 1 (13) ◽  
pp. 28-37
Author(s):  
Sergey Anatolievich Vavrenyuk
Keyword(s):  
Higher Education ◽  
Education System ◽  
Modern Society ◽  
State Regulation ◽  
National Education ◽  
Existing Problems ◽  
National Education System ◽  
Educational Product ◽  
Education Today ◽  
Low Efficiency

The article reveals the economic essence of the current state of higher education in Ukraine. It examines the main problems of state regulation of risks and challenges facing modern education at the stage of reform. The subject of the study is the very system of higher education in Ukraine. The purpose of the study is to analyze the state of the modern market of higher education in the country, as well as the features and trends of its development to date in the process of reform. The development of the national education system is shown together with its social and economic problems and challenges, as well as the political conditions that find the direction of the development of education in the country. It was revealed that the main risks in the education system of Ukraine can be considered a decrease in the number of highly skilled professionals, the closure of a number of educational institutions with a reduction in the contingent that lead to financial losses. In addition, among the risks studied, the low efficiency of training technologies and the low-level of graduates’ competence, corruption and low rating indicators in the world educational community are highlighted. The author specifies the existing external risks of the education system in the country and presents possible ways of overcoming them. And also draws the conclusion that the current conditions of the country’s existence and specifically the development of the education sector, the introduction of new models and training programs is a complex process. The reform of higher education today does not have significant results, therefore, it is suggested that the entire education system in Ukraine is integrated and fundamentally reformed, with the aim of overcoming existing discrepancies between the educational product and the needs of society. So, the author says that the modern structure of education should give to ensuring ideal conditions for the functioning and development of the education system, taking into account the needs of modern society and the existing problems in the educational sphere, which should give quality educational services and freedom of choice in education.

Storage Mechanism of Processing Magnanimity Small Files Applying HDFS Architecture

2013 ◽  
Vol 765-767 ◽  
pp. 1614-1617
Author(s):  
Wang Xin ◽  
Jun Ma
Keyword(s):  
Reading Time ◽  
New Method ◽  
Storage Mechanism ◽  
Application Architecture ◽  
Reading Efficiency ◽  
Low Efficiency

Pointing at the low efficiency problem of I/O operations of small files using HDFS application architecture, this article proposes a new method, that is, add disk buffer on DataNode to reduce addressing time of reading small files, and thus reduce reading time, and reduce the stress bringed by frequent NameNode access, so as to optimize the reading efficiency of small files. Experiment results show that the design programme is feasible, and adding disk buffer benefits for increasing efficiency of processing small files applying HDFS.

scholarly journals Analysis of depth-sensing indentation tests with a Knoop indenter

2001 ◽  
Vol 16 (6) ◽  
pp. 1660-1667 ◽  
Author(s):  
L. Riester ◽  
T. J. Bell ◽  
A. C. Fischer-Cripps
Keyword(s):  
Elastic Modulus ◽  
Elastic Recovery ◽  
Indentation Test ◽  
New Method ◽  
Short Axis ◽  
Depth Sensing ◽  
Specimen Material ◽  
Indentation Tests ◽  
Conventional Methods ◽  
Knoop Indenter

The present work shows how data obtained in a depth-sensing indentation test using a Knoop indenter may be analyzed to provide elastic modulus and hardness of the specimen material. The method takes into account the elastic recovery along the direction of the short axis of the residual impression as the indenter is removed. If elastic recovery is not accounted for, the elastic modulus and hardness are overestimated by an amount that depends on the ratio of E/H of the specimen material. The new method of analysis expresses the elastic recovery of the short diagonal of the residual impression into an equivalent face angle for one side of the Knoop indenter. Conventional methods of analysis using this corrected angle provide results for modulus and hardness that are consistent with those obtained with other types of indenters.

scholarly journals The occurrence and distribution of antibiotics in the Karst river system in Kaiyang, Southwest China

2018 ◽  
Vol 18 (6) ◽  
pp. 2044-2052 ◽  
Author(s):  
Shengzhang Zou ◽  
Fuyang Huang ◽  
Liang Chen ◽  
Fei Liu
Keyword(s):  
Southwest China ◽  
River Flow ◽  
Wastewater Treatment Plants ◽  
River System ◽  
Contamination Source ◽  
Antibiotic Concentration ◽  
Detection Frequency ◽  
Karst River ◽  
Flow Quantity ◽  
Total Concentrations

Abstract To our knowledge, this was the first study to investigate the occurrence and distribution of antibiotics in the Karst river system in Kaiyang, Southwest China. Ten water samples were collected from the Karst river in Kaiyang, Southwest China. Thirty-five antibiotics, including nine sulfonamides, four tetracyclines, five macrolides, sixteen quinolones and chloramphenicol, were analyzed. The results suggest that antibiotics are widely prevalent in the Karst river, with macrolides and quinolones being the most dominant and occupying 47% and 43% of total antibiotic concentration, respectively. The maximum total concentrations of sulfonamides, tetracyclines, macrolides, and quinolones were 30.4, 421, 884, and 1,807 ng/L, respectively. Lincomycin, roxithromycin, nalidixic acid, ofloxacin, and norfloxacin were detected in all samples with a detection frequency of 100%. The main sources of antibiotics were wastewater treatment plants (WWTPs) and rural dumps that did not contain sanitary treatment, which accounted for 33% and 40% of the total antibiotics present in the Karst river. Due to an increase in river flow quantity, the presence of WWTPs and rural dumps did not affect the concentration and distribution of antibiotics in the Karst river; however, the mass flux of antibiotics were significantly affected by the contamination source and the poor natural attenuation.

scholarly journals A new method using a vessel-sealing system provides coagulation effects to various types of bleeding with less thermal damage

2020 ◽  
Author(s):  
Shosaburo Oyama ◽  
Takashi Nonaka ◽  
Keitaro Matsumoto ◽  
Daisuke Taniguchi ◽  
Yasumasa Hashimoto ◽  
...  
Keyword(s):  
Small Intestine ◽  
Thermal Damage ◽  
New Method ◽  
Porcine Liver ◽  
Energy Devices ◽  
Vessel Sealing System ◽  
Vessel Sealing ◽  
Soft Coagulation ◽  
Conventional Methods ◽  
Porcine Organs

Abstract Background Hemostasis is very important for a safe surgery, particularly in endoscopic surgery. Accordingly, in the last decade, vessel-sealing systems became popular as hemostatic devices. However, their use is limited due to thermal damage to organs, such as intestines and nerves. We developed a new method for safe coagulation using a vessel-sealing system, termed flat coagulation (FC). This study aimed to evaluate the efficacy of this new FC method compared to conventional coagulation methods. Methods We evaluated the thermal damage caused by various energy devices, such as the vessel-sealing system (FC method using LigaSure™), ultrasonic scissors (Sonicision™), and monopolar electrosurgery (cut/coagulation/spray/soft coagulation (SC) mode), on porcine organs, including the small intestine and liver. Furthermore, we compared the hemostasis time between the FC method and conventional methods in the superficial bleeding model using porcine mesentery. Results FC caused less thermal damage than monopolar electrosurgery’s SC mode in the porcine liver and small intestine (liver: mean depth of thermal damage, 1.91 ± 0.35 vs 3.37 ± 0.28 mm; p = 0.0015). In the superficial bleeding model, the hemostasis time of FC was significantly shorter than that of electrosurgery’s SC mode (mean, 19.54 ± 22.51 s vs 44.99 ± 21.18 s; p = 0.0046). Conclusion This study showed that the FC method caused less thermal damage to porcine small intestine and liver than conventional methods. This FC method could provide easier and faster coagulation of superficial bleeds compared to that achieved by electrosurgery’s SC mode. Therefore, this study motivates for the use of this new method to achieve hemostasis with various types of bleeds involving internal organs during endoscopic surgeries.

China Coal Industry and Sustainable Development

2012 ◽  
Vol 512-515 ◽  
pp. 1568-1573
Author(s):  
Fei Zhang ◽  
Yan Bing Wang
Keyword(s):  
Sustainable Development ◽  
Circular Economy ◽  
Coal Industry ◽  
Scientific Model ◽  
The Sustainable Development ◽  
Existing Problems ◽  
Low Efficiency ◽  
Chinese Coal ◽  
Coal Enterprises ◽  
Mode Of Production

At the beginning of the new century, China’s economic growth accelerated. The demand of coal as a basic energy is keeping increase [1]. With the progress of the mining technology, changed the past low efficiency, backward mode of production, but there are still many adverse factors that restrict to the sustainable development of coal industry in China [2]. Through detailed analysis of the current situation of China coal industry, find out existing problems of Chinese coal industry sustainable development, and using the basic principle [3], to find suitable to Chinese coal industry sustainable development scientific proposition -- Circular Economy [4], using circular economy this scientific model to guide Chinese coal enterprises transformation and development, making Chinese coal enterprises realize sustainable development.

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