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Ensemble learning of diffractive optical networks

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Light(Science & Applications) 2021年第1期10卷 123-135页

作者： Md Sadman Sakib Rahman Jingxi Li deniz Mengu Yair Rivenson Aydogan Ozcan Electrical and Computer Engineering Department University of CaliforniaLos AngelesCA 90095USA Bioengineering Department University of CaliforniaLos AngelesCA 90095USA California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCA 90095USA

A plethora of research advances have emerged in the fields of optics and photonics that benefit from harnessing the power of machine ***,there has been a revival of interest in optical computing hardware due to its potential advantages for machine learning tasks in terms of parallelization,power efficiency and computation *** deep neural networks(D^(2)NNs)form such an optical computing framework that benefits from deep learning-based design of successive diffractive layers to all-optically process information as the input light diffracts through these passive layers.D^(2)NNs have demonstrated success in various tasks,including object classification,the spectral encoding of information,optical pulse shaping and ***,we substantially improve the inference performance of diffractive optical networks using feature engineering and ensemble *** independently training 1252 D^(2)NNs that were diversely engineered with a variety of passive input filters,we applied a pruning algorithm to select an optimized ensemble of D^(2)NNs that collectively improved the image classification *** this pruning,we numerically demonstrated that ensembles of N=14 and N=30 D^(2)NNs achieve blind testing accuracies of 61.14±0.23%and 62.13±0.05%,respectively,on the classification of GFAR-10 test images,providing an inference improvennent of>16%compared to the average performance of the individual D^(2)NNs within each *** results constitute the highest inference accuracies achieved to date by any diffractive optical neural network design on the same dataset and might provide a significant leap to extend the application space of diffractive optical image classification and machine vision systems.

关键词： networks collective successive

China＇s Foreign Trade： A ＂New Normal＂

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China & World Economy 2017年第2期25卷 1-21页

作者： Francoise Lemoine deniz Unal Centre d'Etudes Prospectives et d'Informations Intemationales France.

Since the global financial crisis of 2007/2008, China＇s foreign trade has continued to grow faster than international trade, but its drivers are now different from those prevailing before. The participation of the Chinese economy in the global production chains through processing activities is no longer the main driver of its trade performance. The new driving force of change is ordinary trade, based mainly on local inputs and domestic demand. China, which played a major role in the globalization process as an export base for multinational companies, is now shifting to having a ＂＇normal＇foreign trade system, which is more closely integrated into the domestic economy.

关键词： China domestic market growth model foreign direct investment foreign trade

On a new modified fractional analysis of Nagumo equation

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International Journal of Biomathematics 2019年第3期12卷 191-205页

作者： Khaled M.Saad Sinan deniz Dumitru Baleanu Department of Mathematics College of Science and Arts Najran University P.O. Box 1988 Najran Saudi Arabia Department of Mathematics Faculty of Applied Science Taiz University P.O. Box 6169 Taiz Yemen Department of Mathematics Faculty of Art and Sciences Manisa Celal Bayar University 45140 Manisa Turkey Department of Mathematics Faculty of Sciences Cankaya University 06530 Ankara Turkey Institute of Space Sciences Magurele-Bucharest Romania

In this work, a new modified fractional form of the Nagumo equation has been presented and deeply analyzed. Using the Caputo–Fabrizio and Atangana–Baleanu time-fractional derivatives, classical Nagumo model is transformed to a new fractional version. The modified equation has been solved by using the homotopy analysis transform method. The convergence analysis has been also examined with the help of the so-called hh-curves and average residual error. Comparing the obtained approximate solution with the exact solution leaves no doubt believing that the proposed technique is very efficient and converges toward the exact solution very rapidly.

关键词： Nagumo equation nonlinear diffusion and convection homotopy analysis transform method Caputo-Fabrizio-Caputo derivative Atangana-Baleanu-Caputo time-fractional derivatives

Frailty significantly impairs the short term prognosis in elderly patients with heart failure

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Journal of Geriatric Cardiology 2018年第11期15卷 675-681页

作者： Ali deniz Caglar Ozmen Ertugrul Bayram Gulsah Seydaoglu Ayhan Usal Cukurova University Faculty of Medicine Department of Cardiology Adana Turkey Adana Numune Education and Research Hospital Department of Medical Oncology Adana Turkey Cukurova University Faculty of Medicine Department of Biostatistics AdanaTurkey

Background Frailty is a condition of elderly characterized by increased vulnerability to stressful events with high risk of adverse outcomes. The purpose of this study was to evaluate the association between frailty and adverse outcomes including death and hospitalization due to heart failure in elderly patients. Methods We included patients aged ≥ 65 years with the diagnosis of heart failure. The clinical and laboratory data, echocardiography and ECGs were recorded. Additionally, the frailty scores of the patients were evaluated according to Canadian Study of Health and Aging. All the patients were divided as frail or non-frail. The groups were compared for their characteristics and the occurrence of clinical outcomes. Results We included 86 eligible patients. The median follow-up time was four months. The mean age was 75 ± 6.5 years. Of these 86 patients, 17 (19.7%) patients encountered an event (death and/or hospitalization). Nine patients (10.4%) died during follow-up. Thirty patients (34.9%) were considered frail. Among the demographic, clinical and laboratory data, only total protein and albumin levels were found to be lower in frail patients (total protein level: 6.8 ± 0.6 g/dL in non-frails, 6.5 ± 0.9 g/dL in frails, P = 0.05;albumin level: 3.8 ± 0.4 g/dL in non-frails, 3.4 ± 0.6 g/dL in frails, P = 0.001). In multivariate analysis, frailty was found to be strongly associated with clinical outcomes in short term. Conclusions Being frail in an elderly heart failure patient is associated with death and/or hospitalization due to heart failure in short term. Therefore, frailty score should be evaluated for all elderly heart failure patients as a prognostic marker.

关键词： Death Frailty Heart failure Hospitalizations

Endoscopic submucosal dissection for premalignant lesions and noninvasive early gastrointestinal cancers

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World Journal of Gastroenterology 2011年第13期17卷 1701-1709页

作者： Sadettin Hulagu Omer Senturk Cem Aygun Orhan Kocaman Altay Celebi Tolga Konduk deniz Koc Goktug Sirin Ugur Korkmaz Ali erkan Duman Neslihan Bozkurt Gokhan Dindar Tan Attila Yesim Gurbuz Orhan TarcinDivision of Gastroenterology Derince State Hospital Kocaeli 41900 Turkey Cem Kalayci Division of Gastroenterology Kocaeli University Medical School Kocaeli 41000 Turkey Division of Gastroenterology American HospitalIstanbul 34365 Turkey Department of Pathology Kocaeli UniversityMedical School Kocaeli 41000 Turkey Division of Gastroenterology Marmara University School of Medicine Altunizade Istanbul 34662 Turkey

AIM: To investigate the indication, feasibility, safety, and clinical utility of endoscopic submucosal dissection (ESD) in the management of various gastrointestinal pathologies. METHODS: The medical records of 60 consecutive patients (34 female, 26 male) who underwent ESD at the gastroenterology department of Kocaeli University from 2006-2010 were examined. Patients selected for ESDhad premalignant lesions or non-invasive early cancers of the gastrointestinal tract and had endoscopic and histological diagnoses. Early cancers were considered to be confined to the submucosa, with no lymph node involvement by means of computed tomography and endosonography. RESULTS: Sixty ESD procedures were performed. The indications were epithelial lesions (n = 39) (33/39 adenoma with high grade dysplasia, 6/39 adenoma with low grade dysplasia), neuroendocrine tumor (n = 7), cancer (n = 7) (5/7 early colorectal cancer, 2/7 early gastric cancer), granular cell tumor (n = 3), gastrointestinal stromal tumor (n = 2), and leiomyoma (n = 2). En bloc and piecemeal resection rates were 91.6% (55/60) and 8.3% (5/60), respectively. Complete and incomplete resection rates were 96.6% (58/60) and 3.3% (2/60), respectively. Complications were major bleeding [n = 3 (5%)] and perforations [n = 5 (8.3%)] (4 colon, 1 stomach). Two patients with colonic perforations and two patients with submucosal lymphatic and microvasculature invasion (1 gastric carcinoid tumor, 1 colonic adenocarcinoma) were referred to surgery. During a mean follow-up of 12 mo, 1 patient with adenoma with high grade dysplasia underwent a second ESD procedure to resect a local recurrence. CONCLUSION: ESD is a feasible and safe method for treatment of premalignant lesions and early malignant gastrointestinal epithelial and subepithelial lesions. Successful en bloc and complete resection of lesions yield high cure rates with low recurrence.

关键词： Endoscopic submucosal dissection Premalignant gastrointestinal lesion Noninvasive early gastrointestinal cancer Neuroendocrine tumor Gastrointestinal stromal tumor

Asian Revitalization: Adaptive Reuse in Hong Kong, Shanghai, and Singapore, edited by Katie Cummer and Lynne D. DiStefano. Hong Kong University Press, Hong Kong, 2021. ISBN 978-988-8528-55-4

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Built Heritage 2022年第2期6卷 102-105页

作者： deniz Ikiz Kaya Department of the Built Environment Eindhoven University of TechnologyPO Box 513Eindhoven 5600 MBThe Netherlands

Reuse of abandoned or underused historic buildings and sites has become an increasing global trend within the built environment in the past two decades(Bullen and Love 2011;Gravagnuolo et al.2017).Bypassing the wasteful processes of demolition and new construction,adaptive reuse prolongs the lifespan of cultural heritage,contributes to environmental sustainability and enhances urban livability(Ikiz Kaya et al.2021).Focusing on three Asian global cities—Hong Kong,Shanghai and Singapore,the book of Asian Revitalization:Adaptive Reuse in Hong Kong,Shanghai,and Singapore,edited by Cummer and DiStefano,provides a needed analysis of adaptive reuse trends,policies and practices in Asian context.

关键词： Stefan Singapore Asian

Combined quantitative microscopy on the microstructure and phase evolution in Li1.3Al0.3Ti1.7(PO4)3 ceramics

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Journal of Advanced Ceramics 2020年第2期9卷 149-161页

作者： deniz Cihan GUNDUZ Roland SCHIERHOLZ Shicheng YU Hermann TEMPELa Hans KUNGL Rudiger-AEICHEL Forschungszentrum Jülich Institute of Energy and Climate Research(IEK-9:Fundamental Electrochemistry)Julich D-52425Germany Forschungszentrum Julich Institute of Energy and Climate Research(IEK-12:Helmholtz-Institute Münster:Ionics in Energy Storage)Munster D-48149Germany RWTH Aachen University Institute of Physical ChemistryAachen D-52074Germany

Lithium aluminum titanium phosphate(LATP)is one of the materials under consideration as an electrolyte in future all-solid-state lithium-ion *** ceramic processing,the presence of secondary phases and porosity play an important *** a presence of more than one secondary phase and pores,image analysis must tackle the difficulties about distinguishing between these microstructural *** this study,we study the phase evolution of LATP ceramics sintered at temperatures between 950 and 1100℃by image segmentation based on energy-dispersive X-ray spectroscopy(EDS)elemental maps combined with quantitative analysis of LATP *** found aluminum phosphate(AlPO4)and another phosphate phase((Lix)PyOz).The amount of these phases changes with sintering ***,since the grains act as an aluminum source for AlPO4 formation,the aluminum content in the LATP grains ***,the amount of secondary phase changes from more(Lix)PyOz at 950℃to mainly AlPO4 at 1100℃sintering *** also used scanning electron microscopy(SEM)and confocal laser scanning microscopy(CLSM)to study the evolution of the LATP grains and AlPO4,and LATP grain size increases with sintering *** addition,transmission electron microscopy(TEM)was used for the determination of grain boundary width and to identify the amorphous structure of AlPO4.

关键词： lithium aluminum titanium phosphate(LATP) microstructure quantitative microscopy grain size confocal laser scanning microscopy(CLSM) NASICON

Evaluation of periodontal healing in class II furcation defects following guided tissue regeneration with two different types of poly lactic acid membranes

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Chinese Medical Journal 2004年第2期17卷 270-274页

作者： deniz Cetiner Berrinnsal Ates Parlar ElifGültekin BülentKurtis Department of Periodontology Faculty of Dentistry Gazi University Ankara TurkeyDepartment of Periodontology Faculty of Dentistry Gazi University Ankara TurkeyDepartment of Periodontology Faculty of Dentistry Gazi University Ankara TurkeyDepartment of Pathology Faculty of Dentistry Gazi University Ankara TurkeyDepartment of Periodontology Faculty of Dentistry Gazi University Ankara Turkey

Background Guided tissue regeneration procedures provide predictable reconstruction of periodontal tissues in the treatment of furcation involvements in animals and huamns. This study was to compare long-term effectiveness of two different types of polylactic acid (PLA) membranes on periodontal regeneration in surgically created class II furcation defects in dogs.Methods Full thickness mucoperiosteal flap was raised on the buccal aspects of the experimental teeth and class II furcation defects having 5 mm vertical dimensions were created on mandibular premolar III and IV on each quadrant. The exposed root surfaces were thoroughly planed and PLA membranes were placed over the experimental defects on both sites. One site received liquid polymer membrane (LPM), and resorbable periodontal mesh (RPM) membranes were applied to the other site. The animals were sacrificed at 7 months after surgery and the specimens were processed for histological evaluation.Results The average length of new attachment formed on the treated roots in both groups ranged from 3. 02 mm to 4. 5 mm. Complete bone filling was observed at the furcation sites. No statistically significant differences were found between two membranes in any of the parameters (P>0. 05).Conclusion This study demonstrates favorable regenerative outcomes by the use of two different types of PLA membranes that could be used as alternatives for guided tissue regeneration (GTR).

关键词： guided tissue regeneration polyfactic acid membranes furcation/surgery experimental studies

Influence of skeletal muscle mass on graft regeneration after living-donor liver transplantation

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Hepatobiliary Surgery and Nutrition 2021年第4期10卷 564-566页

作者： deniz Uluk Johann Pratschke Georg Lurje Department of Surgery Campus CharitéMitte|Campus Virchow-KlinikumCharité-Universitätsmedizin BerlinBerlinGermany

Body composition(BC)is defined as the relative proportion of fat,water,protein,and mineral components in the body and varies greatly among *** skeletal muscle depletion is frequently seen in severely ill patients,sarcopenia,defined as a pathological reduction of skeletal muscle mass(SMM)and strength,is one of the most significant features of the metabolic imbalance related to end stage liver disease(ESLD).

关键词： skeletal liver donor