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Journal articles on the topic 'Block of seats'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Vasermanis, Edgars K., Nicholas A. Nechval, Konstantin N. Nechval, and Kristine N. Rozite. "OPTIMAL AIRLINE SEAT INVENTORY CONTROL FOR MULTI‐LEG FLIGHTS." Aviation 8, no. 4 (2004): 10–15. http://dx.doi.org/10.3846/16487788.2004.9635883.

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Airline seat inventory control is about “selling the right seats to the right people at the right time”. In this paper, the problem of determining optimal booking policy for multiple fare classes in a pool of identical seats for multi‐leg flights is considered. During the time prior to departure of a multi‐leg flight, decisions must be made concerning the allocation of reserved seats to passengers requesting space on the full or partial spans of the flight. It will be noted that in the case of multi‐leg flights the long‐haul passengers are often unable to obtain seats because the shorter‐haul

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2

Ari Wibowo, Sri Arttini Dwi Prasetyowati, and Suryani Alifah. "SISTEM PENDETEKSI KETERSEDIAAN DAN LOKASI TEMPAT DUDUK PADA RUANGAN MENGGUNAKAN MOVABLE PASSIVE INFRA RED (PIR) ARRAY." Elkom : Jurnal Elektronika dan Komputer 15, no. 2 (2022): 298–309. http://dx.doi.org/10.51903/elkom.v15i2.753.

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Based on statistical data, every year there is an increase in population. This also happened to the increasing number of Catholics. The increase member in Saint Aloysius Church of Mojosongo isn’t accompanied by an increase of seating facilities, to solved this, a device was designed which will show seats that have been used or still empty through a viewer that will be placed near the entrance. The research method used in this study is a quantitative method. The number of seats used by in one block is 25 seats, the seat sample is 9 seats. Three (3) PIR sensors are placed above the row to the se

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Aliff, S. M. "Sri Lanka’s General Election 2015." International Letters of Social and Humanistic Sciences 68 (April 2016): 7–17. http://dx.doi.org/10.18052/www.scipress.com/ilshs.68.7.

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Sri Lanka emerges from this latest election with a hung Parliament in 2015. A coalition called the United National Front for Good Governance (UNFGG) won 106 seats and secured ten out of 22 electoral districts, including Colombo to obtain the largest block of seats at the parliamentary polls, though it couldn’t secure a simple majority in 225-member parliament. It also has the backing of smaller parties that support its agenda of electoral. In the August parliamentary election, the former president Rajapaksa forces upped the nationalist ante and campaigned to win a majority of parliamentary sea

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4

Kirjakka, Marjut. "Fire alleys in Finnish urban design." Urban Morphology 9, no. 1 (2004): 17–28. http://dx.doi.org/10.51347/jum.v9i1.3915.

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Until the late-nineteenth century fire safety was considered the greatest problem in Finnish wooden towns. At first, masonry buildings were believed to be the solution and greater spaciousness was emphasized for aesthetic reasons. Later, spaciousness was recognized as improving fire safety. The practical goal was to extinguish fires; only later came fire protection through the creation of openings in the urban fabric that were wide enough to prevent fire from spreading. In the first phase streets were widened. In the late-eighteenth century there arose a need to diminish the likelihood of fire

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Fitterer, Jessica, Trisalyn Nelson, and Timothy Stockwell. "The Negative Effects of Alcohol Establishment Size and Proximity on the Frequency of Violent and Disorder Crime across Block Groups of Victoria, British Columbia." ISPRS International Journal of Geo-Information 7, no. 8 (2018): 297. http://dx.doi.org/10.3390/ijgi7080297.

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Multiple studies have associated the density of alcohol establishments with crime. What is not well understood is the influence of establishment patron capacity on the magnitude of crime in an area, or how the spacing of liquor primary establishments impacts crime levels. Using a Poisson spatial lag model, we estimated how patron capacity of on-premises licenses and the total number of off-premises licenses were associated with the frequency of violent and disorder crime occurring on Friday and Saturday nights in Victoria, British Columbia. To identify how the distance between bars and pubs wa

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Song, Yong Jia, Xi Min Gao, Guang Jie Wang, and Jie Wang. "Analysis and Research on the Evaluation of Economy Benefits of Small Watershed Warping Dams System." Advanced Materials Research 403-408 (November 2011): 3026–29. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.3026.

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The evaluation of economy benefits of small watershed warping dams system program mainly includes foundation benefit, economic benefit, ecological benefit, social benefit on project construction. The thesis takes this small watershed planning scheme 30- year computation time as object of study ,on its soil conservation benefit, storage benefit, planting benefits and rationalities irrigation benefit, block mud benefit, economic indexes such as flood protection benefits were analyzed and calculated ,for dam system planning scheme of the economic rationality assessment provides evaluation basis.

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7

KRISHNA, VALMIKI RAMA, and Dr Uddagatti Venkatesha. "Political Dimensions of Weaker Sections Welfare in Local Self Government in India: A Study." JOURNAL OF SOCIAL SCIENCE RESEARCH 14 (February 28, 2019): 3122–35. http://dx.doi.org/10.24297/jssr.v14i0.8111.

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Soon after independence, the main thrust of Indian Government centered on meeting the basic needs of India’s population which include food, clothing and shelter. With this perspective, the national policy makers looked at various measures to alleviate the rural poor. The process of self governance and planning by empowering the people through Panchayati Raj system although started nearly five decades earlier, but 73rd and 74th amendments in the Constitution of India brought an historic change in the process of decentralisation towards the grass root level and participation of people both in th

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8

Calvo, Ernesto. "The Competitive Road to Proportional Representation." World Politics 61, no. 2 (2009): 254–95. http://dx.doi.org/10.1017/s0043887109000100.

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One of the most noteworthy political regularities in the early twentieth century was the shift away from majoritarian electoral rules in Western Europe. The conventional wisdom suggests that proportional representation (PR) was introduced by elites who believed that under the existing majoritarian rules (simple plurality, block-vote, two-ballot rules) they would soon lose power to rapidly growing socialist parties. But this does not explain why many electoral reforms were carried out in countries with weak or nonexistent socialist parties. The author shows that increasing the number of parties

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9

Chen, Xiaoliang, Zhelu Wang, Haoyou Shi, et al. "Review of Agricultural Machinery Seat Semi-Active Suspension Systems for Ride Comfort." Machines 13, no. 3 (2025): 246. https://doi.org/10.3390/machines13030246.

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This paper systematically reviews research progress in semi-active suspension systems for agricultural machinery seats, focusing on key technologies and methods to enhance ride comfort. First, through an analysis of the comfort evaluation indicators and constraints of seat suspension systems, the current applications of variable stiffness and damping components, as well as semi-active control technologies, are outlined. Second, a comparative analysis of single control methods (such as PID control, fuzzy control, and sliding mode control) and composite control methods (such as fuzzy PID control

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10

Kaur, Baljit. "Panchayati Raj Institutions and Women Empowerment: A Case Study of Gram Panchayats of Malwa Region of Punjab." Think India 22, no. 3 (2019): 1600–1610. http://dx.doi.org/10.26643/think-india.v22i3.8543.

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The women constitute half of the society. The feudal attitudes of looking down upon the abilities of women and not promoting them, is still continuing in different degrees at various levels of our society. While women have made many advances, their inferior status to men continues to be a global phenomenon. At a time of unprecedented economic growth, India is experiencing a dramatic intensification of violence against women and the majority of girls are still not getting equal educational opportunity. In one of the most important steps for the empowerment of women, the Indian government gave c

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11

TOFAN, George-Bogdan, and Adrian NIŢĂ. "RESULTS OF LOCAL ELECTIONS IN HARGHITA COUNTY, SEPTEMBER 27, 2020." Revista Română de Geografie Politică 26, no. 1 (2024): 51–60. http://dx.doi.org/10.30892/rrgp.261104-376.

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The results of the local elections in Harghita County, 27th September 2020. This study aims to faithfully depict the territorial distribution of the electoral decisions taken by the inhabitants of Harghita County at the local elections held on 27th September 2020. Based on official statistical data from the Central Electoral Office (https://locale2020.bec.ro/rezultate), the voting for mayors, local and county councilors, as well as president of Harghita County Council was thoroughly examined. 67 mayors were elected in the 21st Electoral District ‒ Harghita County, their political affiliation b

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ARIF, AHMAD NENGROO. "PANCHAYAT ELECTION IN JAMMU AND KASHMIR 2011: A CASE STUDY IN KULGAM DISTRICT." OUR HERITAGE 68, no. 1 (2020): 6921–29. https://doi.org/10.5281/zenodo.6523312.

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<strong>Abstract</strong> The objective of this study is to analyze the people's participation in the 2011 panchayat elections and success of panchayati raj institutions. These elections were held after a long gap of 10 years, on the non-party basis with 33% reservations for women, only in Panch Seats. According to the new system people were directly voted, to elect Panchs and sarpanchs at Halqa level. The state election department had prepared fresh data about the number of Panchayats and Panch Constituencies in Jammu and Kashmir. The state has total 52 Lakh voters eligible for voting dur

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13

Nuhu, Khalid Idris. "The Legal Implication of Political Defection on Nigeria’s Democracy." Sriwijaya Law Review 5, no. 2 (2021): 247. http://dx.doi.org/10.28946/slrev.vol5.iss2.1060.pp247-261.

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The prevalence of cross-carpeting in Nigerian politics continues to threaten the consolidation of democracy in the country. It is strengthened by the proliferation of political parties devoid of entrenched ideology or political philosophy besides attaining political and economic powers. The unusually delayed justice in defection related matters sometimes occasioned by the pile of cases before the scanty judicial umpire in the country is another block of stumbling over. The technical approach of these umpires to cases of defection or constitutional matters may not be far from being a cloak on t

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14

Chemakin, A. A. "Election campaigns to Stavropol City Duma in September – November 1919." Гуманитарные и юридические исследования 9, no. 4 (2022): 605–14. http://dx.doi.org/10.37493/2409-1030.2022.4.11.

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The article deals with elections to the Stavropol City Duma in autumn 1919. In that time the city was under control of Armed Forces of South Russia and the local White military administration working for a loyal Duma actively meddled in the race and put on moderate and rightwing political forces which put forward straightway several lists of candidates (neighborhood guardianships, burghers and house owners). A main opponent of authorities was a socialist block consolidating Socialist-Revolutionaries, Mensheviks and a number of public organizations. The list of “progressive voters” was in betwe

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15

Pietsch, Hollie, Danielle Cristino, Kerry Danelson, et al. "Comparison of Adult Female and Male PMHS Pelvis and Lumbar Response to Underbody Blast." Stapp Car Crash Journal 67, no. 1 (2024): 44–77. http://dx.doi.org/10.4271/2023-22-0003.

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<div class="section abstract"><div class="htmlview paragraph">The goal of this study was to gather and compare kinematic response and injury data on both female and male whole-body Post-mortem Human Surrogates (PMHS) responses to Underbody Blast (UBB) loading. Midsized males (50th percentile, MM) have historically been most used in biomechanical testing and were the focus of the Warrior Injury Assessment Manikin (WIAMan) program, thus this population subgroup was selected to be the baseline for female comparison. Both small female (5th percentile, SF) and large female (75th percent

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16

Breach, D. R., and Anne Penfold Street. "Irreducible designs from supplementary difference sets." Bulletin of the Australian Mathematical Society 31, no. 1 (1985): 105–15. http://dx.doi.org/10.1017/s0004972700002318.

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A family of n k-subsets of the integers modulo ν are said to be supplementary difference sets if developing them by addition modulo ν leads to a balanced incomplete block design, and to be minimal if no proper subfamily leads to a balanced incomplete block design when developed modulo ν. In other words, the family of supplementary difference sets is minimal precisely when it leads to a balanced incomplete block design which cannot be partitioned into a union of proper subdesigns, each consisting of complete cyclic sets of ν blocks. We discuss the conditions under which such a balanced incomple

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17

Dzhamuev, Bulat. "The effect of polyurethane foam glue on the strength and deformability of aerated concrete masonry when using it as a masonry mortar." E3S Web of Conferences 410 (2023): 02032. http://dx.doi.org/10.1051/e3sconf/202341002032.

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The article presents the results of experimental studies of masonry made of cellular concrete blocks of autoclave hardening YTONG produced by JSC «Kcell-Aeroblock-Center» on the adhesive composition (polyurethane glue) Dryfix (POLYPAG AG). The tests included comprehensive studies of the strength and deformability of masonry walls made of cellular concrete blocks, under various types of stress state of structures: central and off-center compression of masonry walls, axial tension on bandaged and unbound seams, tensile bending on bandaged and unbound seams, shear with an assessment of tangential

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18

Aliiev, Elchyn, Olexandr Chernii, and Yevhen Kalhankov. "Experimental Testing of the Quality of elasTomeric Seals of the O-ring Type of Modernauto-Tractor Internal Combustion Engines." National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, no. 54 (2024): 63–76. https://doi.org/10.32515/2414-3820.2024.54.63-76.

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The purpose of the work is to study the manufacturing quality and stress relaxation during compression and determine the residual deformation of elastomeric sealing rings of the O-ring type, which are used in the technical service of modern agricultural machinery. Experimental studies were carried out on a DM-30M laboratory unit. During the test, the dependence of the stress drop in compressed samples of materials on time, the rate of stress relaxation, the magnitude of the stress drop to the equilibrium value, the equilibrium modulus, and the residual deformation after the removal of the load

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19

Tyagi, B. N., and S. K. H. Rizwi. "Efficiency-⁄Partially-Efficiency-Balanced Block Designs through Difference Sets." Calcutta Statistical Association Bulletin 42, no. 1-2 (1992): 97–102. http://dx.doi.org/10.1177/0008068319920107.

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In this paper, some new efficiency⁄partially efficiency Balanced block designs have been constructed using the method of differences. These designs are binary with incomplete blocks and are of much practical utility.

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20

Rudniev, Yevhen, Mykola Antoshchenko, Elvira Filatieva, and Mykhailo Filatiev. "SCIENTIFIC BASIS FOR THE DEVELOPMENT OF A METHOD FOR FORECASTING THE HAZARDOUS PROPERTIES OF COAL SEAMS." JOURNAL of Donetsk Mining Institute, no. 1 (2022): 132–45. http://dx.doi.org/10.31474/1999-981x-2022-1-132-145.

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Purpose: to develop a method of coal gradation to predict the hazardous properties of coal seams during mining. Methodology: based on the study of the interdependence between indicators of the degree of coal metamorphism, which characterize various aspects of its transformation in geological processes. Results: the dependence of the manifestation of any dangerous property of coal seams during mining operations on the influencing factors of the three blocks is considered. In the general case, the most dangerous properties of coal seams include the release of explosive and flammable gases, sudde

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21

Xie, Shengrong, Yiyi Wu, Fangfang Guo, et al. "Interaction Mechanism of the Upper and Lower Main Roofs with Different Properties in Close Coal Seams: A Case Study." Energies 15, no. 15 (2022): 5533. http://dx.doi.org/10.3390/en15155533.

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Close-distance coal seams are widely distributed in China, and the mining of overlying coal seams leads to floor damage. To grasp the properties and the fracture spans of the damaged main roof in the underlying coal seam, combining the calculation of the floor damage depth with rock damage theory and the formulas for calculating the first and periodic weighting intervals of the damaged main roof and the instability conditions of the damaged key blocks are obtained. Three interaction stability mechanics models are proposed for key blocks with different properties of the upper and lower main roo

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22

Parlindungan Situmeang, Yohanes, I. Gusti Made Arjana, and Kadek Siliani. "Use of Mulch and Organic Fertilizer on Chrysanthemum." SEAS (Sustainable Environment Agricultural Science) 1, no. 2 (2017): 39. http://dx.doi.org/10.22225/seas.1.2.395.39-45.

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This study aims to determine the growth response and yield of chrysanthemum plants in the application of several types of mulch and organic fertilizer. This research uses the basic design of Randomized Block Design with the factorial pattern with 2 factors and 3 replications. The first factor is mulch treatment consisting of 3 levels ie without mulch, rice husk mulch, and black silver plastic mulch. The second factor is organic fertilizer consists of 3 levels namely petrogenic, cow manure and chicken manure. The research results showed that the highest weight of flower stalk was obtained in si

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23

Wang, Ran. "Study on the Gas Desorption Regularity of Coal Lumps of Different Sizes under Different Water Inundation Conditions." International Journal of Natural Resources and Environmental Studies 3, no. 3 (2024): 39–45. http://dx.doi.org/10.62051/ijnres.v3n3.06.

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Coal mining can create a large number of abandoned areas, which contain rich coalbed methane resources. The adsorption principle of the residual gas left in the abandoned coal seam is an important part of the coalbed methane resources. The adsorption principle is of great significance for the evaluation of coalbed methane resources in abandoned coal seams. However, due to the complex environment in abandoned coal seams, the factors affecting the adsorption of residual gas in abandoned coal seams are also complex. Among them, water is an important factor that affects the adsorption of residual

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24

Gent, A. N., and O. H. Yeoh. "Small Indentations of Rubber Blocks: Effect of Size and Shape of Block and of Lateral Compression." Rubber Chemistry and Technology 79, no. 4 (2006): 674–93. http://dx.doi.org/10.5254/1.3547960.

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Abstract Many gaskets and seals consist of a long rubber strip or thin-walled ring, placed on a flat rigid surface and indented by a flat-ended rigid indenter. We have examined their resistance to small indentations by FEA. They are treated as infinitely-long elastic blocks of rectangular cross-section, resting on a rigid frictionless base. The indentation stiffness is calculated for various ratios of indenter tip width to block width and to block thickness, using two restraint conditions on the outer surfaces: frictionless walls (zero outwards displacement), as for a gasket placed in a recess

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25

Tanygin, M. O., A. A. Ahmad, O. V. Kazakova, and D. A. Golubov. "Recursive Algorithm for Forming Structured Sets of Information Blocks that Increase the Speed of Performing Procedures for Determining Their Source." Proceedings of the Southwest State University 27, no. 1 (2023): 73–91. http://dx.doi.org/10.21869/2223-1560-2023-27-1-73-91.

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Purpose of research. The article examines the features of the synthesis of specialized devices that control the integrity and authenticity of individual information blocks based on CBC codes. Approaches aimed at reducing computational and resource costs when performing such procedures are considered. The dependencies between the performance indicators and the requirements for the volume of internal memory of specialized computers processing data in CBC mode are formulated..Methods. The implementation of data source authentication procedures using encoding in the mode of concatenation of indivi

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26

Di Martino, Ferdinando, and Salvatore Sessa. "A Novel Image Similarity Measure Based on Greatest and Smallest Eigen Fuzzy Sets." Symmetry 15, no. 5 (2023): 1104. http://dx.doi.org/10.3390/sym15051104.

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A novel image similarity index based on the greatest and smallest fuzzy set solutions of the max–min and min–max compositions of fuzzy relations, respectively, is proposed. The greatest and smallest fuzzy sets are found symmetrically as the min–max and max–min solutions, respectively, to a fuzzy relation equation. The original image is partitioned into squared blocks and the pixels in each block are normalized to [0, 1] in order to have a fuzzy relation. The greatest and smallest fuzzy sets, found for each block, are used to measure the similarity between the original image and the image recon

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Fot, A. P., and A. E. Shukhman. "ALGORITHM TO GENERATE GAUGE BLOCK SETS BASED ON THE METHOD OF LAGRANGE MULTIPLIERS." Kontrol'. Diagnostika, no. 317 (November 2024): 45–51. https://doi.org/10.14489/td.2024.11.pp.045-051.

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The results of the analysis of existing gauge block sets proposed by domestic and foreign manufacturers for metrological support of various enterprises are presented. We construct dependencies to determine sizes of groups of gauge block sets, taking into account the sizes of blocks and gradations of the sizes in groups, as well as a dependence for finding the total length are constructed. We propose an approach to assign size ranges of the largest measures in groups that allows reducing the amount of computational operations when searching for optimal sets for a given total number of blocks in

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28

Ji, Changqi, Haili Sun, Ruofei Zhong, Jincheng Li, and Yulong Han. "Precise Positioning Method of Moving Laser Point Cloud in Shield Tunnel Based on Bolt Hole Extraction." Remote Sensing 14, no. 19 (2022): 4791. http://dx.doi.org/10.3390/rs14194791.

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Mobile laser scanning technology used for deformation detection of shield tunnel is usually two-dimensional, which is expanded into three-dimensional (3D) through mileage, resulting in low positioning accuracy. This study proposes a 3D laser point cloud positioning method that is divided into rings in the mileage direction and blocks in the ring direction to improve the positional accuracy for shield tunnels. First, the cylindrical tunnel wall is expanded into a plane and the bolt holes are extracted using the self-adaptive parameter adjustment cloth simulation filter (CSF) algorithm combined

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29

Müller, Leo. "Begrenzung der Bundestagsgröße – ein Blick in den gesetzgeberischen „Werkzeugkasten“ zur Reform des Bundeswahlgesetzes." Zeitschrift für Parlamentsfragen 52, no. 3 (2021): 659–68. http://dx.doi.org/10.5771/0340-1758-2021-3-659.

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In recent years, the Bundestag election system has turned into a permanent construction site . This is owed to the Supreme Constitutional Court (BVerfG) having ruled on the effect of negative voting weight and overhang seats and has led to the Federal Electoral Law (BWG) being changed a few times . When Norbert Lammert was President of the Bundestag he had already encouraged a reform to decrease the size of the Bundestag . Meanwhile the last reform is much more restrained than many political parties had required it to be and it is not clear whether the 20th Bundestag will decrease in size . Ba

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Fot, A. P., and A. E. Shukman. "ON THE ISSUE OF CHOOSING SETS OF END MEASURES USING SOFTWARE TOOLS." Spravochnik. Inzhenernyi zhurnal, no. 304 (July 2022): 22–27. http://dx.doi.org/10.14489/hb.2022.07.pp.022-027.

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The purpose of our study is to simplify the selection of gauge block sets for producing precision lengths based on automated characteristic calculation and effectiveness evaluation of sets taking into account operational and economic criteria. The methods used are numerical experiments to determine the characteristics of gauge block sets, a comparative analysis of sets by different manufacturers. The relevance of the proposed approach is justified by the large computational complexity and even the impossibility to determine the characteristics of sets without using a computer. An original algo

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Rubacha, Jarosław, Adam Pilch, and Marcin Zastawnik. "Measurements of the Sound Absorption Coefficient of Auditorium Seats for Various Geometries of the Samples." Archives of Acoustics 37, no. 4 (2012): 483–88. http://dx.doi.org/10.2478/v10168-012-0060-1.

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Abstract This paper presents the results of measurements of the sound absorption coefficient of auditorium seats carried out in the laboratory using two methods. In the first one, small blocks of seats in various arrangements were studied in a reverberation chamber to determine the absorption coefficient of an auditorium of infinite dimensions. The results were compared to the values of the absorption coefficient measured using the second method, which involved samples enclosed within a frame screening the side surfaces of other auditorium blocks. The results of both methods allowed for the as

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32

He, Fulian, Bingquan Liu, Deqiu Wang, et al. "Study on Stability and Control of Surrounding Rock in the Stopping Space with Fully Mechanized Top Coal Caving under Goaf." Energies 15, no. 22 (2022): 8498. http://dx.doi.org/10.3390/en15228498.

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Under the condition of fully mechanized top coal caving in close-distance coal seams, the surrounding rock of the stopping space easily loses stability during the withdrawal of mining equipment in the working face because the lower coal seam working face is located under the goaf and the overburden rock has a large range of complex interaction. Field investigation, theoretical analysis, laboratory experiment, similar simulation experiment, numerical simulation, and field industrial tests are used to carry out the research on the stability and control of the surrounding rock in the large sectio

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LEE, JIANN-DER, and LI-PENG LOU. "USING TEXTURE AND SHAPE FEATURES TO RETRIEVE SETS OF SIMILAR MEDICAL IMAGES." Biomedical Engineering: Applications, Basis and Communications 15, no. 05 (2003): 193–99. http://dx.doi.org/10.4015/s1016237203000298.

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In this paper, a novel scheme has been proposed for image retrieval task using the feature extracted directly from a compressed or uncompressed image. The texture information is first extracted by exploiting the multiresolution nature of wavelet decomposition, which represent the horizontal, vertical and diagonal frequency distribution of an image. We then calculate the mean and standard deviation of wavelet coefficients of each sub-band as texture features. In additions, we also extract shape feature by using the fixed-resolution block representation, which divides the image into isometric bl

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Sun, Bin, Shuling Tang, Shu Tao, et al. "Geological and Geochemical Responses to Productivity of CBM Wells in the Baiyang River Block of the Southern Junggar Basin, China." Energies 16, no. 24 (2023): 8063. http://dx.doi.org/10.3390/en16248063.

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The southern Junggar Basin, Xinjiang, has abundant coalbed methane (CBM) resources. Currently, the Baiyang River development pilot test area (BYR block for short) in the Fukang east block has achieved large-scale CBM development, but the productivity characteristics and its controlling factor are still unclear. Based on the field production data of the BYR block and experimental tests, this paper summarizes the gas and water production characteristics and presents the analysis results of the geological and geochemical responses to the productivity of CBM wells. The productivity of CBM wells in

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35

Feng, Zhicheng, and Britta Späth. "Unitriangular basic sets, Brauer characters and coprime actions." Representation Theory of the American Mathematical Society 27, no. 6 (2023): 115–48. http://dx.doi.org/10.1090/ert/635.

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We show that the decomposition matrix of a given group G G is unitriangular, whenever G G has a normal subgroup N N such that the decomposition matrix of N N is unitriangular, G / N G/N is abelian and certain characters of N N extend to their stabilizer in G G . Using the recent result by Brunat–Dudas–Taylor establishing that unipotent blocks have a unitriangular decomposition matrix, this allows us to prove that blocks of groups of quasi-simple groups of Lie type have a unitriangular decomposition matrix whenever they are related via Bonnafé–Dat–Rouquier’s equivalence to a unipotent block. Th

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Shi, Yifeng, Junier Oliva, and Marc Niethammer. "Deep Message Passing on Sets." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 04 (2020): 5750–57. http://dx.doi.org/10.1609/aaai.v34i04.6031.

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Modern methods for learning over graph input data have shown the fruitfulness of accounting for relationships among elements in a collection. However, most methods that learn over set input data use only rudimentary approaches to exploit intra-collection relationships. In this work we introduce Deep Message Passing on Sets (DMPS), a novel method that incorporates relational learning for sets. DMPS not only connects learning on graphs with learning on sets via deep kernel learning, but it also bridges message passing on sets and traditional diffusion dynamics commonly used in denoising models.

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Nur Ali Amri, Septi Wulandari, Tedy Agung Cahyadi, Inmarlinianto, and Satria Abadi. "Distance of Drill-Hole Determination based on Global Estimation Variance of Coal Resources Classification." Journal of Advanced Research in Applied Sciences and Engineering Technology 33, no. 1 (2023): 267–74. http://dx.doi.org/10.37934/araset.33.1.267274.

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Based on SNI 5015:2019, the estimation of coal resources is based on geological conditions, as well as the distance of information points for each geological condition and resource class. PT. AMNK is a coal mining company and has now started mining. The mines are divided into three blocks, north, middle, and south. Drilling activities have been carried out in the middle block, with 66 drilling points resulting in 4 main seams namely, H seam, I seam, J seam, and K seam. The average drill hole distance is 150 m. This type of coal deposit belongs to the moderate geological group characterized by

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Mai, Longquan, and Hao Li. "Finite–Discrete Element Method Simulation Study on Development of Water-Conducting Fractures in Fault-Bearing Roof under Repeated Mining of Extra-Thick Coal Seams." Sustainability 16, no. 12 (2024): 5177. http://dx.doi.org/10.3390/su16125177.

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The formation of water-conducting fractures in overlying strata caused by underground coal mining not only leads to roof water inrush disasters, but also water-conducting fractures penetrate the aquifer, resulting in the occurrence of a mine-water-inrush disaster and the loss of water resources. It destroys the sustainability of surface water and underground aquifers. This phenomenon is particularly significant in extra-thick coal seams and fault-bearing areas. Numerical simulation is an effective method to predict the failure range of mining overburden rock with low cost and high efficiency.

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Veis, Alexander, Nikolaos Dabarakis, Christos Koutrogiannis, Irodis Barlas, Elina Petsa, and Georgios Romanos. "Evaluation of Vertical Bone Regeneration Using Block and Particulate Forms of Bio-Oss Bone Graft: A Histologic Study in the Rabbit Mandible." Journal of Oral Implantology 41, no. 3 (2015): e66-e72. http://dx.doi.org/10.1563/aaid-joi-d-13-00241.

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The aim of the present study was to evaluate histologically vertical bone regeneration outcomes after using bovine bone graft material in block and granular forms. The buccal bony plates of the outer mandibles of 10 New Zealand rabbits received Bio-Oss blocks that were immobilized using orthopedic mini-plates, and another 10 received granular forms that were gently packed and stabilized into the custom-made perforated metallic cubes. The mean graft area (GA), new bone area (NBA), bone-to-graft contact (BGC), and maximum vertical height reached by the new bone development (MVH) were histometric

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Liu, Shunxi, Jie Yang, Yi Jin, et al. "An Evaluation of the Coalbed Methane Mining Potential of Shoushan I Mine Based on the Subject–Object Combination Weighting Method." Processes 12, no. 3 (2024): 602. http://dx.doi.org/10.3390/pr12030602.

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The parameters of coalbed methane reservoirs have large differences, and the precise values cannot represent the resource and production characteristics of the whole block. In order to address these problems, an index system for evaluating the production potential of coalbed methane blocks was constructed, the weights of evaluation parameters were determined, and a model for the preferential selection of coalbed methane blocks based on the subjective–objective combination of weights method was established. The main coal seams (No. 2-1 and No. 4-2) of the Pingdingshan-Shoushan I Mine Block were

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Perry, Kyle A. "The Effects of Friction on the Performance of A Concrete Block Mine Seal with Pressurized Grout Bags." Archives of Mining Sciences 59, no. 3 (2014): 793–805. http://dx.doi.org/10.2478/amsc-2014-0055.

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Abstract Mine seals are necessary in nearly every underground coal mine to isolate mined-out areas from the ventilation network. Many seals are already in place in active mines and more need to be constructed to keep up with the development of underground coal reserves. The accidents involving seal failures at Sago and Darby prompted MSHA to create and implement new regulations regarding the strength of the seals. These regulations require the design and construction of seals that are larger and stronger than ever before. Structural seals capable of withstanding the new required design loads a

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Gu, Xiaowei, Qing Wang, Xiaochuan Xu, and Xiaoqian Ma. "Phase Planning for Open Pit Coal Mines through Nested Pit Generation and Dynamic Programming." Mathematical Problems in Engineering 2021 (February 11, 2021): 1–8. http://dx.doi.org/10.1155/2021/8219431.

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This paper presents a phase planning method specially designed for coal deposits with nearly horizontal, bedded coal seams. The geology of this type of deposit is modeled into a column model, instead of a block model, to avoid coal-rock mixing in blocks. A nested pit generation algorithm is developed for producing a series of nested, least-strip ratio pits with a column model as its input. The algorithm completely overcomes the troublesome gap problem. Taking the least-strip ratio pits as possible phase states, a dynamic programming formulation is proposed to simultaneously optimize the number

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Zhou, Yupu, Feng Cui, Chong Jia, Ganggui Feng, Yuanjiang Gao, and Shuai Dong. "The Spatio-Temporal Evolution of Overlying Rock Structure and Mine Pressure Behavior in a Short-Distance Coal Seam Face." Geofluids 2022 (October 27, 2022): 1–16. http://dx.doi.org/10.1155/2022/3432577.

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This research is aimed at exploring the evolution of overlying strata structure and the ground pressure in the working face mining of close-distance coal seams. By taking the Xiashijie Coal Mine as an example, the direct relationship between the rotation angle of key blocks of overlying strata and the subsidence of key blocks and the length of rock blocks was deduced using theoretical analysis and similar simulation experiments, and the critical criterion of basic overlying strata breaking was formed. Through the real-time monitoring of the characteristics of overlying strata and its pressure,

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Kasi, Elangovan, and Mohan Ramakrishnan. "Studies on Fluorocarbon Elastomer Nanocomposites for Sealing Applications." Materiale Plastice 58, no. 4 (2022): 171–78. http://dx.doi.org/10.37358/mp.21.4.5542.

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The usage of seals in several applications like aircraft engines is mostly made of Fluorocarbon (FKM) elastomer. They are coloured products that enable easier identification based on the applications. In such seals, fillers like carbon black cannot be added to reinforce and improvise the mechanical properties since carbon black does not make it possible to add colours. The properties after ageing are also very critical in sealing application, and they must also be improved. Also, Nanocomposites are the modern and growing trends in the field of polymers that show enormous changes in the propert

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Arnould, JPY, CL Littnan, and GM Lento. "First contemporary record of New Zealand fur seals Arctocephalus forsteri breeding in Bass Strait." Australian Mammalogy 22, no. 1 (2000): 57. http://dx.doi.org/10.1071/am00057.

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DURING the late eighteenth and early nineteenth centuries (1798 - 1825), large numbers of fur seals were hunted on the islands off southeastern Australia. It is estimated that >300,000 pelts were collected before hunting became commercially nonviable and the seals gained statutory protection in 1889 (Warneke and Shaughnessy 1985). Two types of fur seals were known to occur in southeastern Australian waters but cargo records from the sealing vessels active in the area do not accurately identify the species taken, referring to them only as ?black? and ?brown? seals (Goldsworthy et al. 1997).

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Chen, Hao, Wenguang Tian, Zhenhong Chen, Qingfeng Zhang, and Shu Tao. "Genesis of Coalbed Methane and Its Storage and Seepage Space in Baode Block, Eastern Ordos Basin." Energies 15, no. 1 (2021): 81. http://dx.doi.org/10.3390/en15010081.

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The Baode block on the eastern margin of the Ordos Basin is a key area for the development of low-rank coalbed methane (CBM) in China. In order to find out the genesis of CBM and its storage and seepage space in Baode block, the isotopic testing of gas samples was carried out to reveal the origin of CH4 and CO2, as well, mercury intrusion porosimetry, low temperature nitrogen adsorption, and X-ray CT tests were performed to characterize the pores and fractures in No. 4 + 5 and No. 8 + 9 coal seams. The results showed that the average volume fraction of CH4, N2, and CO2 is 88.31%, 4.73%, and 6.

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Cobb, M. "ACID SEAS BLOCK NEMO'S NOSE." Journal of Experimental Biology 213, no. 21 (2010): iii. http://dx.doi.org/10.1242/jeb.036780.

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Drake, David A. "Blocking sets in block designs." Journal of Combinatorial Theory, Series A 40, no. 2 (1985): 459–62. http://dx.doi.org/10.1016/0097-3165(85)90109-8.

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Zhang, Cong, Jing Xue, and Xiaoqing Gu. "An Online Weighted Bayesian Fuzzy Clustering Method for Large Medical Data Sets." Computational Intelligence and Neuroscience 2022 (February 21, 2022): 1–11. http://dx.doi.org/10.1155/2022/6168785.

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With the rapid development of artificial intelligence, various medical devices and wearable devices have emerged, enabling people to collect various health data of themselves in hospitals or other places. This has led to a substantial increase in the scale of medical data, and it is impossible to import these data into memory at one time. As a result, the hardware requirements of the computer become higher and the time consumption increases. This paper introduces an online clustering framework, divides the large data set into several small data blocks, processes each data block by weighting cl

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Chen, Dongdong, Jingkun Zhu, Qiucheng Ye, et al. "Application of Gob-Side Entry Driving in Fully Mechanized Caving Mining: A Review of Theory and Technology." Energies 16, no. 6 (2023): 2691. http://dx.doi.org/10.3390/en16062691.

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China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost. In fully mechanized caving mining, especially in fully mechanized caving mining of extra-thick coal seams, the mining space is ample, the mine pressure is severe, and the roadway maintenance is complex. As a result, it is necessary to summarize and discuss the gob-side entry driving of fully mechanized caving in theory and technology, which wi

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