As a result of TÜBİTAK 1001 Program's First Evaluation Period of 2021, 3 Projects Hosted by ÖzÜ are Selected for Funding
Evaluation results have been announced for the projects submitted in the 1st Term of 2021 to TÜBİTAK ARDEB 1001-Scientific and Technological Research Projects Funding Program. Among 2497 projects submitted, 2233 proposals were taken into scientific evaluation and 247 of them were eligible to support. According to the results of the evaluation, ÖzÜ researchers Asst. Prof. Ercenur Ünal, Prof. Mehmet Arık- Energy Efficient Lighting Technologies Research, Development, Training and Implementation Laboratory Development (EVATEG) and Asst. Prof. Enis Kayış’s projects are selected for funding. We congratulate our researchers whose projects will be supported and wish them an efficient project implementation process.
Projects Accepted from OzU
Project Title: Event Representation in Cognition, Language and Development
Summary: One of the fundamental aspects of human cognition is the ability to perceive and communicate about dynamic events that unfold around us. Current research assumes that event perception is guided by general cognitive biases that are universal to a large extent. Nevertheless, evidence for this claim mainly comes from research with speakers of English that overlooks the cross-linguistic diversity in how core aspects of events are encoded. This project studies two core event domains (event participants and spatial-temporal framework) using a variety of linguistic and non-linguistic measures with both learners and mature speakers of Turkish - a language that encodes these aspects of events differently. By doing so, this project will combine theories and methods from cognitive science, developmental psychology and linguistics to enhance our understanding of the nature of language-thought interactions in event cognition and how it changes during development.
Asst. Prof. Ercenur Ünal
Faculty of Social Sciences
Project Title: Integrated Inventory Management for Single and Omni-Channel Retailers under Product Returns
Summary: Due to increasing digitalization, end-consumers can easily access the product they desire and find another comparable product. Therefore, product returns are becoming increasingly common for retail firms. In the retail sector; product return rates are known to be up to 50% and these returns can be added to the inventory quickly upon return. In addition to the uncertainty in demand, stochastic returns make inventory management quite challenging for retail firms. In this project, new approaches will be proposed for integrated inventory management of retailers when both product sales and product returns are assumed to be uncertain. We will quantify the benefits of our approaches under different settings. In our preliminary studies we find that this benefit could reach up to 23% for a baseline scenario.
As a result of this project, we will develop managerial insights for an effective and realistic inventory management system under the ever-increasing product returns. The proposed solution would reduce the leftover inventory after the season and reduce the amount of products sent to landfills thus reducing the carbon emissions and creating a more environmentally-friendly system.
Asst. Prof. Enis Kayış
Faculty of Engineering
Project Title: Investigation of Phosphor Heat Generation and Particle Motion in Phosphor Converted Light Emitting Diodes
Summary: In an energy indispensible world, LEDs (light emitting diodes) has shown potential to be more energy efficient than any other known lighting technologies (Arık et al., 2012). In between of two primary solutions for achieving white light from monochromatic LEDs, phosphor conversion (Pc) method is more commercially successful and attracted major academic studies (Xia et al., 2016) rather than RGB color mixing.
White light emission of Pc-LEDs is based on the photoluminescence of phosphor particles conventionally dispersed in container matrix (i.e. silicon) which is placed on the light emission path of a blue light LED. As a result, blue light coming from the LED is converted to longer wavelengths of light and to heat. Main Pc-LED configurations for phosphor coating also present various optical and thermal behaviors. Additional to above PC configurations, thickness of phosphor layer (Liu et al., 2010), deposition region (Liu et al., 2009), particle concentration (Sommer et al., 2010), size (Huang et al., 2009), combination (You et al., 2010), geometry (Won et al., 2009) and quantum efficiency are also determining factors.
In this research, relationship between LED chip and phosphor particles will be investigated to improve thermal and optical performance of Pc-LED. Different from other applications, phosphor particles will be immersed inside optically clear fluid that will be encapsulated in a dome shaped glass covering the blue LED chip. After building accurate optical and thermal models main governing parameters of the novel system will be altered to gain the optimized geometrical, optical, and material properties for new device manufacturing. The novel Pc-LED configuration is believed to break the current power-optical barriers in the way of building high efficacy and high-power white LEDs.
Visiting Researcher: Dr. Mete Budaklı
Students Involved in the Project: Ceren Cengiz, Mohammad Azarifar
Prof. Mehmet Arık
Faculty of Engineering