Teknik Dergi最新文献_第4页

Yaya Kazalarının Yaralanma Şiddetinin İncelenmesi: İkili Lojistik Regresyon Modeli Uygulaması 新案例飓风暴力的检验——二次逻辑回归模型的应用

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-05-01 DOI: 10.18400/tekderg.670811

Murat Özen

引用次数: 1

Jeoid Değişimlerinin ICESat Altimetre Verisi ile Hesaplanan Su Seviyelerine Etkisi ICESat高度计Jeoid变化数据对水位计算的影响

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-05-01 DOI: 10.18400/tekderg.634227

F. Saka, A. Tekeli, Senayi Dönmez

引用次数: 1

Kaynak Dengeleme Probleminin Arama Uzayını Paralel Programlama ile Tarayarak Kesin Çözümü 用并行编程扫描输出空间求解源分析问题

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-05-01 DOI: 10.18400/tekderg.595238

Önder Halis Bettemi̇r, Tuğba Erzurum

{"title":"Kaynak Dengeleme Probleminin Arama Uzayını Paralel Programlama ile Tarayarak Kesin Çözümü","authors":"Önder Halis Bettemi̇r, Tuğba Erzurum","doi":"10.18400/tekderg.595238","DOIUrl":"https://doi.org/10.18400/tekderg.595238","url":null,"abstract":"Exact Solution of Resource Leveling Problem by Exhaustive Enumeration with Parallel Programming Resource Leveling Problem (RLP) is solved by heuristic, meta-heuristic, and mathematical methods. However, the aforementioned methods cannot guarantee the exact solution for large size problems. In this study, number of feasible schedules which can be obtained by delaying the non-critical activities without violating the precedence relationships and elongating the project completion time are computed. All of the feasible schedules which can be defined as the search domain are enumerated and the guaranteed optimum solution for the RLP is obtained by a different method from the existing methods. Exponential equation between the search domain and the number of activities on serial path is derived and the insolvability of large RLP in a reasonable time by one central processing unit is verified. Partitioning of the problem into equal sizes is provided by parallel programming so that each particle contains the same number of enumeration. In this study, four RLP in which the largest problem has 36 activities are solved by exhaustive enumeration within reasonable solution time and it is proved that the proposed method is applicable. Exact solutions of larger problems can also be obtained by the proposed method if the problem is partitioned into smaller sizes.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45582870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Consolidated Undrained Monotonic Shearing Response of Hydrophobic Kızılırmak Sand 疏水Kızılırmak砂固结不排水单调剪切响应

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.543306

K. Cetin, Hüseyin Tatar

{"title":"Consolidated Undrained Monotonic Shearing Response of Hydrophobic Kızılırmak Sand","authors":"K. Cetin, Hüseyin Tatar","doi":"10.18400/tekderg.543306","DOIUrl":"https://doi.org/10.18400/tekderg.543306","url":null,"abstract":"Geotechnical properties of hydrophilic (wettable) sands have been widely discussed in the literature. However, sands may gain hydrophobic (non-wettable) properties after being exposed to a hydrophobic agent in the nature. The number of available studies regarding the response of hydrophobic sands is very limited, and mostly focus on their environmental and hydrological aspects. To close this gap, a controlled laboratory testing program, consisting of 18 static strain-controlled consolidated undrained triaxial shear tests, was designed. Tests were performed on fully saturated hydrophilic and hydrophobic re-constituted Kizilirmak sand samples of different relative densities with pore water measurements. Hydrophobic samples were prepared by using 1 and 2 % WD-40 lubricant by mass. The effect of hydrophobic agent was assessed by comparing the stress – excess pore water pressure - strain responses of hydrophobic sand samples with those of conventional (hydrophilic) sand samples. Test results revealed that addition of hydrophobic agent increases the dilatancy of sands at low confining stresses (~100kPa) by decreasing the excess pore water pressure generation. At higher confining stresses (~400kPa) this effect is less pronounced. Moreover, the addition of hydrophobic agent up to 2% by mass does not systematically and significantly change the effective angle of shearing resistance of sand samples, independent of their initial relative density and confining stress levels.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45108615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Equation Model of the Factors Affecting Construction Industry Innovation Success 影响建筑业创新成功因素的结构方程模型

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.567272

G. Demirdöğen, Z. Işık

引用次数: 3

Determination of Important Building Construction Nuisances in Residential Areas on Neighbouring Community 住宅小区重要建筑施工公害对邻近社区的判定

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.486628

Cenk Budayan, Tolga Çelik

引用次数: 3

Nonlinear Response Spectra for Seismic Isolation System Design in Turkey 土耳其隔震系统设计的非线性反应谱

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.511798

Aslihan Yolcu, Gülüm Tanırcan, C. Tüzün

引用次数: 0

An Effective Improved Multi-objective Evolutionary Algorithm (IMOEA) for Solving Constraint Civil Engineering Optimization Problems 求解约束型土木工程优化问题的改进多目标进化算法(IMOEA

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.541640

H. G. Arab, A. M. Rayeni, M. Ghasemi

{"title":"An Effective Improved Multi-objective Evolutionary Algorithm (IMOEA) for Solving Constraint Civil Engineering Optimization Problems","authors":"H. G. Arab, A. M. Rayeni, M. Ghasemi","doi":"10.18400/tekderg.541640","DOIUrl":"https://doi.org/10.18400/tekderg.541640","url":null,"abstract":"This paper introduces a new metaheuristic optimization method based on evolutionary algorithms to solve single-objective engineering optimization problems faster and more efficient. By considering constraints as a new objective function, problems turned to multi objective optimization problems. To avoid regular local optimum, different mutations and crossovers are studied and the best operators due their performances are selected as main operators of algorithm. Moreover, certain infeasible solutions can provide useful information about the direction which lead to best solution, so these infeasible solutions are defined on basic concepts of optimization and uses their feature to guide convergence of algorithm to global optimum. Dynamic interference of mutation and crossover are considered to prevent unnecessary calculation and also a selection strategy for choosing optimal solution is introduced. To verify the performance of the proposed algorithm, some CEC 2006 optimization problems which prevalently used in the literatures, are inspected. After satisfaction of acquired result by proposed algorithm on mathematical problems, four popular engineering optimization problems are solved. Comparison of results obtained by proposed algorithm with other optimization algorithms show that the suggested method has a powerful approach in finding the optimal solutions and exhibits significance accuracy and appropriate convergence in reaching the global optimum.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46454825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Experimental Investigation of Scour Hole Characteristics for Different Shapes of Piers Caused by Flood Hydrograph Succeeding Steady Flow 稳流后洪水线对不同形状桥墩冲刷孔特性的试验研究

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.595126

Aslı Bor Türkben, M. Güney

{"title":"Experimental Investigation of Scour Hole Characteristics for Different Shapes of Piers Caused by Flood Hydrograph Succeeding Steady Flow","authors":"Aslı Bor Türkben, M. Güney","doi":"10.18400/tekderg.595126","DOIUrl":"https://doi.org/10.18400/tekderg.595126","url":null,"abstract":"In this study, the scour depth and dimensions of the scour hole around different shaped piers in the case of hydrographs succeeding steady flow were studied experimentally. The experiments were carried out by using circular, square, rectangular, lenticular and rectangular with trapezoidal nose to compare the various scour hole geometries at the same flow conditions. Numerous experiments were conducted in a rectangular flume (18.6 m long, 0.80 m wide and 0.75 m deep) with different triangular shaped hydrographs. The flume bed of 26 cm thickness consists of uniform graded material with D 50 =1.68 mm. The experiments were carried out in clear water conditions. The temporal variations of the equilibrium scour depths in front the pier and the scour hole dimensions were recorded by two different cameras. The equilibrium scour depths at lateral sides and downstream of the piers were also measured. Regression analysis was performed in order to derive empirical relations to predict temporal variations of the scour depth in the case of unsteady flow. The shape factor values were also investigated based on the experimental findings and the obtained values were compared with those available in literature. The performance of the obtained empirical relations was tested by using experimental data existing in the literature. The smallest scour hole was observed for the rectangular with trapezoidal noses pier. The increase in the scour hole dimensions for other cross-sections was in the following order: rectangular with circular noses, circular, square and rectangular piers.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46850696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Snap-through Buckling of Shallow Spherical Shells under Ring Loads 环形载荷作用下扁球壳的弹穿屈曲

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-03-01 DOI: 10.18400/tekderg.565095

E. Karataş, R. F. Yükseler

引用次数: 0