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Yayın Laura Mulvey, afterimages: on cinema, women and changing times(Semire Ruken Öztürk, 2021) Gürkan, İpekMulvey’in düşünce hayatı esasında hep aynı veya benzer problemlerin temelinde ilerleyerek farklı açılardan o düşünceyi geliştirmeye ve anlamaya dayanıyor. Bu anlamda Mulvey, düşüncesini sürekli yeniliyor, sorguluyor ve bu sorgulamaya metinlerinin içerisinde büyük bir dürüstlükle yer veriyor. Afterimages’da Mulvey’in metinleri arasında diyalojik bağ metinlerle zihinsel bir ilişki kurmaya izin veriyor ve geçmişle güncel olan arasındaki gerilimin izini taşıyor. Mulvey’in güncelliği; kendi düşüncesi üzerine yönelen metinleri arasında kurulan bu açık diyalojik bağa ve bu bağın yansıtıcı özelliğine dayanıyor. Her bir metin öncekilerden izler taşıyor; aynı filmlere aynı düşüncelere geri dönüyor ama tekrara düşmeden, farklı açılardan yeniden sorgulayarak. Mulvey’in bu kitapta “geç üslup” meselesine eğilmesi satır arasına saklanmış en az iki anlamı öne çıkarıyor: birincisi kendi düşüncelerindeki değişimi gösteriyor, “kendi geç eserinde” aynı filmlere yönelerek, bir anlamda kendi geç üslubunu bu filmler yoluyla yaratıyor; ikincisi geç üslubun -dolaylı olarak ölüm fikrinin- sanat eserine yansıması düşüncesi öznellik ve yorum tartışmasını içeriyor. Bu tartışma da içten içe film çalışmalarında temsil politikalarına, anlamı göstergelerde arayan “yoruma” karşı bir eleştiriyi barındırıyor. Mulvey’in bu “geç eseri” hem geçmişe bakmanın belleğe başvurmanın ağırlığını ve biraz da melankolisini taşıyor, hem de güncelin popülist eleştirisinin “sinemanın ölümünü” ilan eden tüm serzenişlerin olumsuzluğuna hapsolmadan aksine bu dönüşümü kucaklayan, bitimsiz tartışmaların retorik örtüsünü kaldıran bir olumlamayla ilerliyor.Yayın Reviewing the effects of spatial features on price prediction for real estate market: Istanbul case(IEEE, 2022-09-16) Ecevit, Mert İlhan; Erdem, Zeki; Dağ, HasanIn the real estate market, spatial features play a crucial role in determining property appraisals and prices. When spatial features are considered, classification techniques have been rarely studied compared to regression, which is commonly used for price prediction. This study reviews spatial features' effects on predicting the house price ranges for real estate in Istanbul, Turkey, in the classification context. Spatial features are generated and extracted by geocoding the address information from the original data set. This geocoding and feature extraction is another challenge in this research. The experiments compare the performance of Decision Trees (DT), Random Forests (RF), and Logistic Regression (LR) classifier models on the data set with and without spatial features. The prediction models are evaluated based on classification metrics such as accuracy, precision, recall, and F1-Score. We additionally examine the ROC curve of each classifier. The test results show that the RF model outperforms the DT and LR models. It is observed that spatial features, when incorporated with non-spatial features, significantly improve the prediction performance of the models for the house price ranges. It is considered that the results can contribute to making decisions more accurately for the appraisal in the real estate industry.Yayın Placing STS in and through Turkey(Soc Social Studies Science, 2023-03-02) Alkan, Aybike; Kaşdoğan, Duygu; Maral, ErolWhy and how does it matter to undertake an STS praxis in a country where the field lacks adequate institutional recognition and capacity? This article investigates this question by tracing multiple, fragmented and contingent stories of placing STS in and through Turkey. At first sight, discontinuous stories of STS programs established in universities and unrecognized nature of STS as a discipline by the Council of Higher Education draw attention to the "underdeveloped" nature of the field in this country. This article counters such a perspective by rendering visible the works that support STS ethos as well as loose institutions within which STS is expected to flourish. By following people and artifacts in institutional and more-than institutional places of STS, this article acknowledges the efforts both to translate STS into the particular places of Turkey and to use STS as an intellectual space through which technoscientific knowledge can be questioned and translated into the local contexts of the country. The analysis of these translation efforts reveals that STS can be thought of as a space that enables one to be attuned to the sensibilities and realities of the country and search for ways to democratize the processes of technoscientific knowledge production whether it be in the universities or in public spaces.Yayın Generic BER analysis of VLC channels impaired by 3D user-mobility and imperfect CSI(Institute of Electrical and Electronics Engineers Inc., 2021-07) Reddy Sekhar, K.; Miramirkhani, Farshad; Mitra, Rangeet; Turlapaty, Anish ChandVisible light communications (VLC) has emerged as a high-speed, low-cost, and green supplement for the existing radio frequency (RF) based infrastructures. However, the performance of VLC based systems is found to degrade significantly due to detrimental outages caused by non-negligible variations in the VLC channel-gain, that are jointly induced by radial user-mobility and random photodetector-orientation (together designated as 3D mobility in this letter). In addition to the 3D user-mobility mentioned above, the performance of VLC based systems is further limited by imperfect channel-state information (CSI). Such degradations in the VLC-link caused by the aforementioned factors necessitate the quantification of performance-metrics for further benchmarking/receiver-design. In this work, an analytical expression for bit-error rate (BER) is derived for a single LED indoor VLC system considering the radial user-mobility, random receiver orientation, and imperfect CSI altogether. Further, the derived BER expressions are validated using computer-simulations using typical VLC channel models from the literature. A close agreement between the analytical and the simulated BER is observed, which verifies the accuracy of the presented analysis.Yayın Oyunlaştırma ve Mekan: Yaz Çalıştayı 26-30 Temmuz 2021(Işık Üniversitesi Yayınları, 2021-09) Işık Üniversitesi; Karadağ, Derya; Ozar, Betül; Gülbahar, SimgeTasarım eğitiminde çalıştaylar, resmi müfredatlar içerisinde yer almadığı halde öğrencinin kendisini geliştirebilmesi ve yürütücülerle birlikte bir araştırma ortamında deneyim ve becerilerini geliştirebilmesi için büyük önem taşımaktadır. Bilgi paylaşımı ve üretiminin sağlanması adına disiplinler arası ve kolektif bir ortam sunan çalıştaylar sayesinde, formel eğitimin içine doğrudan girmeyen konular hakkında tasarım öğrencilerine yeni bakış açıları ve perspektifler kazandırılmaktadır. Bu amaçlara hizmet etmesi amacıyla, Işık Üniversitesi, Sanat, Tasarım ve Mimarlık Fakültesi, İç Mimarlık ve Çevre Tasarımı Bölümü tarafından 26-30 Temmuz 2021 tarihleri arasında gerçekleştirilen 'Oyunlaştırma ve Mekan Yaz Çalıştayı' düzenlenmiştir. Covid-19 salgını sonrası, yüz yüze olan tasarım stüdyolarının zorunlu olarak çevrimiçi ortama taşınması, çalıştayın da dijital ortamda gerçekleştirilmesine neden olmuştur. Fakat çalıştayın çevrimiçi süreci, farklı üniversitelerden akademisyenlerin ve öğrencilerin buluştuğu zengin bir tasarım atölyesi haline gelmesi ile sonuçlanmıştır. Toplamda 11 atölye, 49 katılımcı ve 21 yürütücü ile çalıştay sonuçlandırılmıştır. Çevrimiçi ortamların bir buluşma mekanı olarak kullanılması, bu çalışmanın temasının belirlenmesine zemin hazırlamıştır. Oyun, tarih boyunca yaşamın ayrılmaz bir parçası, canlıların çevreleri ile kurdukları ilişki ve öğrenme süreçleri için güçlü bir çerçeve olmasının yanı sıra, fiziksel ve dijital ortamlarda gerçekleştirilebilen bir eylemdir. Bu güçlü kavramsal ve yöntemsel çerçeve, bugün "oyunlaştırma" olarak her alanda karşımıza çıkmaktadır. Oyun tasarım konseptleri ve ögeleri, yaygın olarak oyun dışı alanlarda öğrenme motivasyonun artırılması ve kullanıcıları problem çözmeye teşvik etmesi gibi amaçlarla yaygın olarak kullanılmaktadır. çalıştay hakkında... Tasarımın tüm disiplinlerinde oyunlaştırma öğeleri ve yöntemleri, farklı şekillerde kullanılabilmektedir. Tasarımcı kullanıcı-mekan arasındaki etkileşimin artırılması, kentin okunması, tarihsel süreçlerin kayıt altına alınması, tasarım eğitiminde stüdyo ortamının zenginleştirilmesi gibi pek çok konuda, oyunlaştırma yöntemlerinin potansiyelleri bir haftalık atölye sürecinde farklı başlıklar altında ele alınmıştır. ‘3..2..1... Design!’, ‘Arkeolojiyi Oyunlaştırmak - arkeOyun’, ‘BEDENİM eşittir EVİM (midir?)’, ‘Evimde "GO" Seferi’, ‘İşlevleri Haritalamak’, ‘Kullanıcı Odaklı Tasarım’, ‘Kullanıcı Ölçeğinde Mekanın Eskizlerle Kurgulanması’, ‘Mekan ve Moda Ara Kesitinde Cephesel Oyunlar’, ‘Modeller, Kodlar ve Sayısallaştırma’, ‘Porta Continua’ ve ‘Renkli Adımlar’ atölyeleri gerçekleştirilmiş ve sonuçların atölyenin tüm katılımcılarıyla yapılan bir toplantıda paylaşılmıştır. Atölyelerin kuramsal olarak desteklenmesi amacıyla, Doç. Çetin Tüker tarafından ‘Oyunlaştırma ve Mekan’ ve Pelin Bolca tarafından ‘Tarihi Çevrenin Korunması ve Farkındalık için Oyunlaştırma’ başlıklı seminerler düzenlemiştir. Bu çalıştaya katılım gösteren tüm öğrencilere ve atölye yürütücülerimize emeklerinden ötürü teşekkür eder, bundan sonraki atölyelerimizde de her zaman birlikte farklı temalarla bir araya gelmeyi dileriz. Bizlerle bilgi ve deneyimlerini paylaşan Doç. Çetin Tüker’e, Dr. Pelin Bolca’ya, atölye sürecinde Fakültemiz bünyesinde bizleri her zaman destekleyen Prof.Dr. Adnan Uzun’a, Dr. Öğr. Üyesi Tunca Güzeloğlu’na, Araş. Gör. Beyza Özdeniz’e teşekkür ederiz.Yayın Improvement of seismic performance of precast frames with cladding panels fastened by energy dissipative steel cushions(Springer, 2021-09) Özkaynak, Hasan; Khajehdehi, Arastoo; Yüksel, Ercan; Karadoğan, Hüseyin FarukPrecast reinforced concrete panels are commonly used as wall claddings in precast buildings. The cladding panels are generally evaluated as non-structural members and are joined to structural systems via mechanical, welding, and bolted dry connections. Several failures were observed in the last seismic events in Southern Europe, which demonstrate the deficiencies of the cladding connections in terms of strength and ductility. A comprehensive research activity named SAFECLADDING was conducted in Europe to provide knowledge for proper seismic design of precast structures with cladding panels. In this context, energy dissipative steel cushions were developed and evaluated through the extensive experimental and numerical studies. Steel cushions can provide robust interaction of the structural system with the cladding panels. This paper numerically evaluates the effects of cladding panels with steel cushions on the global seismic behaviour of the buildings. An existing representative industrial building is selected to perform intensive nonlinear dynamic analyses. Analyses performed on the bare and hybrid systems showed that the hybrid system has high performance in terms of story drifts, internal forces, and deformations with respect to the bare system. The overall drifts in longitudinal and transversal directions of the building are reduced by about 78 and 54%, respectively. Average residual drifts of cladding panels and steel cushions indicated that the applied steel cushion placement scheme has a promising re-centring capability during seismic action.Yayın A thermo-mechanical model of drill margin-borehole surface interface contact conditions in dry drilling of thick CFRP laminates(Elsevier Ltd, 2020-04-23) Karpat, Yiǧit; Karagüzel, Umut; Bahtiyar, OnurDry drilling of thick carbon fiber reinforced polymer (CFRP) laminates requires careful selection of process parameters in order to obtain acceptable borehole surface quality. Complex contact conditions between the drill margin and the borehole surface determine the integrity of the borehole surface depending on the process parameters and temperature-dependent viscoelastic material properties. Temperature rise during dry drilling reduces the elastic modulus of the CFRP and causes thermal expansion of the drill, resulting in considerable contact length at the drill margin and borehole surface interface. Manufacturers need a better understanding of the interaction among contact pressure, sliding velocity, temperature at the interface, and temperature-dependent material properties to develop predictive models for drilling CFRPs. To examine this complex interaction, this study develops a novel, hybrid model that combines a time-based analytical modeling of drilling process with a finite element-based modeling of temperature rise. Drilling experiments were performed in which thrust force, torque, and temperature were measured as a function of feed, and these measurements were used to identify unknown hybrid model parameters. The results revealed that a significant change in friction conditions occurs when increased temperatures at the margin and borehole surface interface approach and exceed the glass transition temperature of the CFRP laminate at a large feed rate. These findings show the benefit of increasing feed during dry drilling, which is nonetheless limited by the temperature-dependent material properties of the work material.Yayın The effect of the interaction between autistic traits and psychotic proneness on empathy: a cross-sectional study with a non-clinical sample(Emerald Publishing, 2023-11-08) Yıldırım, ElifPurpose: Recent evidence indicates an improving effect of the co-occurrence of autistic traits and psychotic symptoms on social cognition, but there is no agreement on the effect of the interaction between autistic traits and psychotic proneness on empathy. The aim of this study is to examine the effect of the interaction between autistic traits and positive psychotic experiences on cognitive and affective empathy. Design/methodology/approach: The sample consisted of 420 adults aged between 18 and 60. Assessments were administered anonymously online. Empathic abilities were evaluated by the Interpersonal Reactivity Index (IRI). While Autism Spectrum Quotient (AQ) was applied to measure autistic traits, The Community Assessment of Psychic Experience (CAPE) was used as a measurement of positive psychotic experiences. Findings: A series of regression analyses showed that although AQ and CAPE scores were not correlated with cognitive-IRI, the interaction between these scores predicted cognitive-IRI scores. It was found that the personal distress subscale of IRI was significantly associated with AQ, but this relationship was moderated by CAPE scores. Originality/value: These findings provide a different perspective on understanding social cognitive impairments in autism, which may have potential clinical implications. Findings also contribute to explaining the individual differences in empathic abilities.Yayın Optimum torque distribution during regenerative braking in a fully electrical vehicle via dynamic programming(IEEE, 2023-10-28) Ergün, Ömer; Çaycı, N. Okan; Dinçmen, Erkin; İstif, İlyasIn electric vehicles, it is important to maximize their regenerative braking performances for obtaining longer driving distances. In this study, for an electric vehicle having motors on the front and rear axles, an optimum torque distribution algorithm based on dynamic programming method is proposed for maximizing the regenerative braking energy. Electric motor limits, efficiency maps, battery model and braking force constraints given in the European regulations are considered in the proposed algorithm. The dynamic programming algorithm code and simulation studies for different braking scenarios are carried out via MATLAB. Simulation studies show that via the proposed torque distribution algorithm, significant improvements in the regenerated braking energy are obtained with respect to the fixed-rate torque distribution algorithm.Yayın The cerebral blood flow deficits in Parkinson’s disease with mild cognitive impairment using arterial spin labeling MRI(Springer, 2020-09) Arslan, Dilek Betül; Gürvit, İbrahim Hakan; Genç, Ozan; Kıçik, Ani; Eryürek, Kardelen; Cengiz, Sevim; Erdoğdu, Emel; Yıldırım, Zerrin; Tüfekçioğlu, Zeynep; Uluğ, Aziz Müfit; Bilgiç, Başar; Hanağası, Haşmet Ayhan; Tüzün, Erdem; Demiralp, Tamer; Öztürk Işık, EsinParkinson's disease (PD) with mild cognitive impairment (PD-MCI) is currently diagnosed based on an arbitrarily predefined standard deviation of neuropsychological test scores, and more objective biomarkers for PD-MCI diagnosis are needed. The purpose of this study was to define possible brain perfusion-based biomarkers of not only mild cognitive impairment, but also risky gene carriers in PD using arterial spin labeling magnetic resonance imaging (ASL-MRI). Fifteen healthy controls (HC), 26 cognitively normal PD (PD-CN), and 27 PD-MCI subjects participated in this study. ASL-MRI data were acquired by signal targeting with alternating radio-frequency labeling with Look-Locker sequence at 3 T. Single nucleotide polymorphism genotyping for rs9468 [microtubule-associated protein tau (MAPT) H1/H1 versus H1/H2 haplotype] was performed using a Stratagene Mx3005p real-time polymerase chain-reaction system (Agilent Technologies, USA). There were 15 subjects withMAPTH1/H1 and 11 subjects withMAPTH1/H2 within PD-MCI, and 33 subjects withMAPTH1/H1 and 19 subjects withMAPTH1/H2 within all PD. Voxel-wise differences of cerebral blood flow (CBF) values between HC, PD-CN and PD-MCI were assessed by one-way analysis of variance followed by pairwise post hoc comparisons. Further, the subgroup of PD patients carrying the riskyMAPTH1/H1 haplotype was compared with noncarriers (MAPTH1/H2 haplotype) in terms of CBF by a two-samplettest. A pattern that could be summarized as "posterior hypoperfusion" (PH) differentiated the PD-MCI group from the HC group with an accuracy of 92.6% (sensitivity = 93%, specificity = 93%). Additionally, the PD patients withMAPTH1/H1 haplotype had decreased perfusion than the ones with H1/H2 haplotype at the posterior areas of the visual network (VN), default mode network (DMN), and dorsal attention network (DAN). The PH-type pattern in ASL-MRI could be employed as a biomarker of both current cognitive impairment and future cognitive decline in PD.
