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Flow Rate along the Length of the Swirling Vortex Axis at an Intake 进气处沿旋涡轴长度的流量

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-07-01 DOI: 10.18400/tekderg.593595

K. Taştan, N. Yıldırım

引用次数: 2

Effect of Different Channels on Discharge Coefficient of Labyrinth Weirs 不同通道对迷宫堰流量系数的影响

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-07-01 DOI: 10.18400/tekderg.629128

R. Daneshfaraz, A. Ghaderi, J. Abraham, M. Torabi

引用次数: 4

Wavelet Packet-Genetic Programming: A New Model for Meteorological Drought Hindcasting 小波包遗传规划:一种新的气象干旱预报模型

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-07-01 DOI: 10.18400/tekderg.605453

A. D. Mehr, M. Safari, Vahid Nourani

{"title":"Wavelet Packet-Genetic Programming: A New Model for Meteorological Drought Hindcasting","authors":"A. D. Mehr, M. Safari, Vahid Nourani","doi":"10.18400/tekderg.605453","DOIUrl":"https://doi.org/10.18400/tekderg.605453","url":null,"abstract":"This study presents developing procedures and verification of a new hybrid model, namely wavelet packet-genetic programming (WPGP) for short-term meteorological drought forecast. To this end, the multi-temporal standardized precipitation evapotranspiration index (SPEI) has been used as the drought quantifying parameter at two meteorological stations at Ankara province, Turkey. The new WPGP model comprises two main steps. In the first step, the wavelet packet, which is a generalization of the well-known wavelet transform, is used to decompose the SPEI series into deterministic and stochastic sub-signals. Then, classic genetic programming (GP) is applied to formulate the deterministic sub-signal considering its effective lags. To characterize the stochastic component, different theoretical probability distribution functions were assessed, and the best one was selected to integrate with the GP-evolved function. The efficiency of the new model was cross-validated with the first order autoregressive (AR1), GP, and random forest (RF) models developed as the benchmarks in the present study. The results showed that the WPGP is a robust model, superior to AR1 and RF, and significantly increases the predictive accuracy of the standalone GP model.","PeriodicalId":49442,"journal":{"name":"Teknik Dergi","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49081407","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: 17

Nanokil/Polimer/Bitüm Nanokompozit Hazırlama Yönteminin Asfalt Karışım Performansı Üzerindeki Etkilerinin Araştırılması

IF 1.3 4区工程技术

Teknik Dergi Pub Date : 2021-05-01 DOI: 10.18400/tekderg.686346

Erol Iskender, Atakan Aksoy

引用次数: 2

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":" ","pages":""},"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":" ","pages":""},"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