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Seismic performance of shallow depth tuned liquid damper

Ali BOZER

Tuned Liquid Dampers (TLD) consist of a container that is generally partially filled with water. When the sloshing frequency of the water mass is tuned to the fundamental mode of the primary structure a significant amount of sloshing and wave breaking can be achieved which are the primary sources of energy dissipation. Although TLDs are easy to install, operate and maintain; it is generally challenging to model the nonlinear nature of sloshing water. Equivalent mechanical models provide a simplified solution in which sloshing liquid mass, liquid damping, and sloshing frequency are represented ...Daha fazlası

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Behaviors of rural structures during destructive earthquakes

Mehmet HASNALBANT

This article deals with the results of the research on the behaviors of the rural buildings made up of local materials during earthquakes. This article reveals the mechanical properties of masonry detected based on experimental research results on wall samples made of local materials such as mud bricks, clay and straw mixture, rubble stones and limestones cut in standard sizes. In addition, the constructive measures prepared for the earthquake resistance of rural structures and the application techniques of these buildings in common construction are also generalized in this article.

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Long-term plantation and harvesting planning for ındustrial plantation forest areas

Oğuzhan Ahmet ARIK

This paper integrates forest harvesting and plantation operations considering the industry’s long-term demand. Forest harvesting problem has been still one of the open problems in operational research, and the problem is interesting because forests are nonrenewable natural resources in short term. Each harvested tree must be replanted within a plantation plan in order to protect the ecosystem and future generation’s needs for forestry goods. A dynamic mixed integer programming approach is proposed for the problem. Furthermore, three hypothetical examples of diferent sizes are presented for the ...Daha fazlası

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An economy’s emergent properties and how micro agents with ınconsistent or conflicting ınterests are holistically organized into macro entities

Erkan KÖSE | Oğuzhan Ahmet ARIK

The existing literature documents that computer simulations can reveal how characteristics of micro-level individuals give rise to macro-level phenomena of systemic wholes. This paper seeks to establish such an important simulation-based observation as a theoretical result on a sound foundation. Going beyond addressing when holistic phenomena can naturally emerge from micro-level characteristics, this paper investigates how and why many macro-level entities appear to answer market calls through organically gathering micro-level agents into uniformly-oriented operational wholes, even though the ...Daha fazlası

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The effects of cross sectional dimensions on the behavior of l-shaped rc structural members

Mehmet HASNALBANT

The behavior of L-Shaped RC (reinforced concrete) shear walls was investigated in the Erciyes University Earthquake Investigation Laboratory under the influence of constant axial load together with reversed cyclic lateral load. The objective of this study was to evaluate the effects of cross sectional dimensions on the behavior of L-shaped structural members and to assess their earthquake performance. In order to investigate L-shaped RC structural members, the special experiment setup and four type of 1/2 scaled specimens which have different aspect ratio were constructed. The specimens were l ...Daha fazlası

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Evaluation of ski centers’ performance using multiple-criteria decision-making methods

Burcu ORALHAN | Zeki ORALHAN | Nur KIRDÖK

Introduction. This study aimed to determine the criteria for the choice of nine different leading ski centers that serve actively in the ski tourism sector of Turkey, to calculate the criteria weights, and to measure the performance of these centers. Material and methods. In this context, the data were defuzzified using the CFCS method, and the fuzzy DEMATEL method was used to determine the criteria affecting the choice of ski centers. Then, the TOPSIS method was applied to measure the performance of ski centers by using the criteria weights obtained with the fuzzy DEMATEL method. Results. As ...Daha fazlası

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Error analysis of the joint localization and synchronization of RIS-Assisted mm-Wave MISO-OFDM under the effect of hardware impairments

Büşra CENİKLİOĞLU

This work investigates the theoretical bounds of the joint localization and synchronization processes in a reconfigurable intelligent surface (RIS)-assisted system. We address the case of millimeter-wave (mm-Wave) multiple-input single-output (MISO) orthogonal frequency-division multiplexing (OFDM) with non-ideal transceivers. Considering a single antenna mobile station (MS) aims to estimate the parameters of the downlinks from the base station (BS) and the RIS by observing a known sequence received by the MS directly from the BS and indirectly through the RIS. The theoretical bounds of the es ...Daha fazlası

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