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Assessment of excavation slurry produced clayey mineral from the Bahr Al-Najaf region Bahr Al-Najaf地区粘土矿物挖掘浆的评价
Pollack Periodica Pub Date : 2023-10-13 DOI: 10.1556/606.2023.00893
Mahdi J. Hussein, Kamal Ali Mohammed, Fatimah H. Naser
{"title":"Assessment of excavation slurry produced clayey mineral from the Bahr Al-Najaf region","authors":"Mahdi J. Hussein, Kamal Ali Mohammed, Fatimah H. Naser","doi":"10.1556/606.2023.00893","DOIUrl":"https://doi.org/10.1556/606.2023.00893","url":null,"abstract":"Abstract This study targeted to investigate a type of excavation slurry by local available material in Najaf region. On the other hand, chief practises is supported the deep sides of foundation in particular pile foundation and, drilling oil wells. The results of slurries are checking, for seven properties, which includes the viscosity (apparent plastic and funnel Marsh), yield stress, density, acidity, and gel power (10–0 min). Which are 11.7367, 8.8733, 38.1667, 11.5467 mPa·s, 1.1045 kg m −3 , 10.9067, and 11.2683 mPa·s, respectively. On the basis of the results tests for the above properties, that is possible to produce a product that conforms to the specifications of American Petroleum Institute specifications, and according to the requirements of the standard ACI 336.3R-93:2006 without additives. The rheological behavior improvement is achieved through the breakdown of the bundles of palygorskite fibers that normally make up the texture of these mudstones by increasing the time and speed of the shear force as soon as increasing the concentration of clay powder.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Overview of the level of 4D BIM integration in the construction industry in Slovakia 斯洛伐克建筑业4D BIM集成水平概述
Pollack Periodica Pub Date : 2023-10-13 DOI: 10.1556/606.2023.00783
Yaroslav Nechyporchuk, Renáta Baškova
{"title":"Overview of the level of 4D BIM integration in the construction industry in Slovakia","authors":"Yaroslav Nechyporchuk, Renáta Baškova","doi":"10.1556/606.2023.00783","DOIUrl":"https://doi.org/10.1556/606.2023.00783","url":null,"abstract":"Abstract Building information modeling is one of the trends in the modern construction industry. The use of 4D building information modeling in addition to 3D building information modeling improves project planning and leads to higher quality of the final product with minimal wastage of resources. In addition, 4D building information modeling allows creating visual effects that can be shown to clients before construction begins. The study describes the ways in which 4D building information modeling can be used, as well as some of the notable benefits. The level of awareness of this technology and the level of its use in construction practice are also described. The final part describes the main problems and tasks of this field and possible ways to solve them.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring fair scheduling aspects – Through final exam scheduling 探索公平安排方面-通过期末考试安排
Pollack Periodica Pub Date : 2023-10-13 DOI: 10.1556/606.2023.00780
Szilvia Jáhn-Erdős, Bence Kővári
{"title":"Exploring fair scheduling aspects – Through final exam scheduling","authors":"Szilvia Jáhn-Erdős, Bence Kővári","doi":"10.1556/606.2023.00780","DOIUrl":"https://doi.org/10.1556/606.2023.00780","url":null,"abstract":"Abstract Fair treatment of individuals in a scheduling task is essential. Unfairness can cause dissatisfaction among workers, faster obsolescence of work tools and underutilization of others. The literature's definitions vary, and there is no clear definition of general scheduling tasks. This article explores fair scheduling through the lens of final exams, aiming to extend decision support system methodologies. It proposes a method based on Lipschitz mapping to measure fairness and presents a pseudo-algorithm for estimating optimal trend lines. The model and the algorithm are demonstrated using the example of final exam schedules. In this way, two feasible solutions can be measured and compared in terms of fairness.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of the capacitance of capacitor with orthotropic dielectric material 正交各向异性介质材料电容器电容的测定
Pollack Periodica Pub Date : 2023-10-13 DOI: 10.1556/606.2023.00828
István Ecsedi, Ákos József Lengyel
{"title":"Determination of the capacitance of capacitor with orthotropic dielectric material","authors":"István Ecsedi, Ákos József Lengyel","doi":"10.1556/606.2023.00828","DOIUrl":"https://doi.org/10.1556/606.2023.00828","url":null,"abstract":"Abstract The paper deals with the capacitance of cylindrical two-dimensional capacitor which consists of Cartesian orthotropic dielectric material. The determination of the capacitance of capacitor with orthotropic dielectric material by a suitable coordinate transformation is reduced to the computation of capacitance of an isotropic capacitor. It is proven that the capacitance of a Cartesian orthotropic capacitor can be obtained in terms of an isotropic capacitor whose dielectric constant is the geometric mean of the dielectric constant of the orthotropic capacitor.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135917785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of convergence speed of chaotic particle swarm optimization algorithm 混沌粒子群优化算法的收敛速度研究
Pollack Periodica Pub Date : 2023-10-10 DOI: 10.1556/606.2023.00933
Bhanu Sekhar Obbu, Zmrooda Jabeen
{"title":"Study of convergence speed of chaotic particle swarm optimization algorithm","authors":"Bhanu Sekhar Obbu, Zmrooda Jabeen","doi":"10.1556/606.2023.00933","DOIUrl":"https://doi.org/10.1556/606.2023.00933","url":null,"abstract":"Abstract This study introduces the Chaotic Particle Swarm Optimization as an innovative variant of the traditional particle swarm optimization algorithm, addressing the issue of particle swarm optimization getting trapped in local minima with a low convergence characteristic during later iterations. Chaotic particle swarm optimization incorporates principles from chaos theory to enhance the swarm's exploration and exploitation capabilities. By introducing controlled chaotic behavior, particles exhibit more diverse and unpredictable movements in the search space, leading to improved global convergence and escape from local minima. The proposed method has been implemented and evaluated on benchmark problems to assess its effectiveness. The integration of chaos theory with particle swarm optimization offers promising opportunities for developing robust and efficient optimization techniques suitable for complex and dynamic problem domains in various real-world applications.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136358811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two different soil erosion modeling approaches in a small experimental area 小试验区两种不同的土壤侵蚀模拟方法
Pollack Periodica Pub Date : 2023-10-10 DOI: 10.1556/606.2023.00835
Matúš Tomaščík, Michaela Danáčová, Zuzana Németová
{"title":"Two different soil erosion modeling approaches in a small experimental area","authors":"Matúš Tomaščík, Michaela Danáčová, Zuzana Németová","doi":"10.1556/606.2023.00835","DOIUrl":"https://doi.org/10.1556/606.2023.00835","url":null,"abstract":"Abstract The models compared in this study were applied to a catchment located in the western part of Slovakia in order to analyze and compare the amount of soil loss in different periods. Using of the empirical model universal soil loss equation, the average annual soil loss in the pilot basin was modeled for 2015–2020. The universal soil loss equation includes a topographic factor modeled using the USLE2D external model. In order to compare the empirical model and the physically-based model a continual sequence of individual rainfall events was created and used as an input to the physically-based EROSION-3D model. The results reflect different behaviors of erosion processes in a catchment together with a comparison between empirical and physically-based approaches.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136357468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Building orientation radiation analysis: An early design study using Ladybug 建筑朝向辐射分析:利用瓢虫进行早期设计研究
Pollack Periodica Pub Date : 2023-10-10 DOI: 10.1556/606.2023.00848
Rowell Ray Lim Shih
{"title":"Building orientation radiation analysis: An early design study using Ladybug","authors":"Rowell Ray Lim Shih","doi":"10.1556/606.2023.00848","DOIUrl":"https://doi.org/10.1556/606.2023.00848","url":null,"abstract":"Abstract The role of building orientation in decreasing energy consumption for cooling purposes was examined in this study. A radiation analysis was performed during the early stage of the architectural design process on a proposed four-story apartment building located in Cebu. The building's performance was evaluated using the Grasshopper Ladybug plugin on a 3D model developed in Rhinoceros. Results indicated that the optimal building orientation that produced the lowest total radiation was situated at 290° from the center of the building, with a recorded value of 731,356 kWh m −2 . Conversely, the building orientation that resulted in the highest total radiation was recorded at 210°, with a value of 755,596 kWh m −2 . The analysis results were utilized to make informed decisions about building orientation based on environmental factors and surrounding areas. The use of computational design tools in the early stages of architecture design improves the process by enabling designers to optimize building performance and identify potential design issues early, thereby avoiding costly problems.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136358801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hysteresis damping ratio for moment steel frame evaluation using DDBD 用DDBD法评价弯矩钢框架的滞回阻尼比
Pollack Periodica Pub Date : 2023-10-05 DOI: 10.1556/606.2023.00936
Hussein Kareem Sultan
{"title":"Hysteresis damping ratio for moment steel frame evaluation using DDBD","authors":"Hussein Kareem Sultan","doi":"10.1556/606.2023.00936","DOIUrl":"https://doi.org/10.1556/606.2023.00936","url":null,"abstract":"Abstract The main purpose of this paper is to propose a model for estimating the hysteresis damping ratio of moment steel frames and compare them with the results obtained using direct displacement-based design. In this study, different models of steel bending frames were examined by using several type of analysis to obtain this ratio. Thirty-steel frame models with 3, 6, 9, 12, and 15 floors and 3 and 6 bay with 6 m span length were analyzed and evaluated. The results showed that the equivalent damping ratio at the level of safety based on Jacobsen and Jennings, and the values of the equivalent damping relationships according to FEMA-440 vary from the empirical formula proposed in displacement-based design-2012. Therefore, in the ductility domain the exponential relationship form was more consistent with the results used. A new formula was proposed to calculate the hysteresis damping ratio, and it is more accurate than the empirical formula proposed in displacement-based design-2012.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135546340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of soil composition on maximum depth of wetting in expansive soils 土壤成分对膨胀土最大湿润深度的影响
Pollack Periodica Pub Date : 2023-10-05 DOI: 10.1556/606.2023.00870
Ammar Alnmr
{"title":"Impact of soil composition on maximum depth of wetting in expansive soils","authors":"Ammar Alnmr","doi":"10.1556/606.2023.00870","DOIUrl":"https://doi.org/10.1556/606.2023.00870","url":null,"abstract":"Abstract Expansive unsaturated soils present challenges in construction due to their moisture-induced behavior. This study proposes empirical equations to estimate the maximum wetting depth over time. Laboratory experiments and numerical analyses using SEEP/W software investigate wetting depth considering time and sand content in coastal and inland regions. Results reveal the significant influence of sand content on maximum soil moisture depth, emphasizing a recommended content above 30% to mitigate heave. The equations offer practical tools for assessing wetting depth, accounting for temporal and spatial variations. This research highlights the importance of wetting depth in addressing soil-related concerns and provides a foundation for further exploration of related factors.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135546341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Disposal of pine wood waste by pelleting with sulphate soap binder 用硫酸盐肥皂粘结剂造粒处理松木废料
Pollack Periodica Pub Date : 2023-10-04 DOI: 10.1556/606.2023.00885
Myroslav Malovanyy, Roman Paraniak, Ivan Tymchuk, Volodymyr Zhuk, Iryna Ablieieva, Mariia Korbut, Yurii Dziurakh, Yustyna Zhylishchych
{"title":"Disposal of pine wood waste by pelleting with sulphate soap binder","authors":"Myroslav Malovanyy, Roman Paraniak, Ivan Tymchuk, Volodymyr Zhuk, Iryna Ablieieva, Mariia Korbut, Yurii Dziurakh, Yustyna Zhylishchych","doi":"10.1556/606.2023.00885","DOIUrl":"https://doi.org/10.1556/606.2023.00885","url":null,"abstract":"Abstract Promising method for disposal the pine wood waste through extrusion pelleting using sulphate soap as a natural binder is considered in the article. Prior to pelleting, the wood waste requires drying to a water content of no more than 10%. Analysis of pine wood waste drying in filtration mode yielded optimal parameters: a 20 mm layer thickness, temperature of 135 °C, and drying time of 3,900 s. The optimal content of sulphate soap binder was determined to be about 20%, resulting in reduced coke residue, increased volatile components, higher calorific value, and enhanced static strength. This binder facilitates formation of pellets at lower pressures, increases calorific value, and acts as a lubricant, reducing friction and associated energy costs.","PeriodicalId":35003,"journal":{"name":"Pollack Periodica","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135591963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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