检索结果-南通市图书馆

All-optical image denoising using a diffractive visual processor

Light(Science & Applications) 2024年第3期13卷 429-445页

作者： Çağatay Işıl Tianyi Gan Fazil Onuralp Ardic Koray Mentesoglu Jagrit Digani Huseyin Karaca Hanlong Chen Jingxi Li Deniz Mengu Mona Jarrahi kaan akşit 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 University College London Department of Computer ScienceLondonUnited Kingdom

Image denoising,one of the essential inverse problems,targets to remove noise/artifacts from input *** general,digital image denoising algorithms,executed on computers,present latency due to several iterations implemented in,e.g.,graphics processing units(GPUs).While deep learning-enabled methods can operate non-iteratively,they also introduce latency and impose a significant computational burden,leading to increased power ***,we introduce an analog diffractive image denoiser to all-optically and non-iteratively clean various forms of noise and artifacts from input images–implemented at the speed of light propagation within a thin diffractive visual processor that axially spans<250×λ,whereλis the wavelength of *** all-optical image denoiser comprises passive transmissive layers optimized using deep learning to physically scatter the optical modes that represent various noise features,causing them to miss the output image Field-of-View(FoV)while retaining the object features of *** results show that these diffractive denoisers can efficiently remove salt and pepper noise and image rendering-related spatial artifacts from input phase or intensity images while achieving an output power efficiency of~30–40%.We experimentally demonstrated the effectiveness of this analog denoiser architecture using a 3D-printed diffractive visual processor operating at the terahertz *** to their speed,power-efficiency,and minimal computational overhead,all-optical diffractive denoisers can be transformative for various image display and projection systems,including,e.g.,holographic displays.

关键词： remove rendering holographic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Latest Carboniferous-Early Permian Rifting of the Northern Gondwanan Margin and the Opening of the Northern Neotethys: New Evidence from the Carboniferous and Permian Foraminiferal Assemblages from the Beyşehir-Hoyran Nappes, Central Taurides(Southern Turkey)

引用

Journal of Earth Science 2024年第2期35卷 394-415页

作者： Cengiz Okuyucu U.Kagan Tekin Cagri Guzgun kaan Sayit Department of Geological Engineering Konya Technical UniversityKonya42250Turkey Department of Geological Engineering Hacettepe UniversityAnkara06800Turkey Department of Geological Engineering Middle East Technical UniversityAnkara06800Turkey

The Beyşehir-Hoyran Nappes,one of the tectonostratigraphic units of the Taurides,are thought to be originated from the Izmir-Ankara Ocean(northern branch of Neotethys).In this study,Late Paleozoic rock units from the blocks of Beyşehir-Hoyran Nappes were studied in detail using foraminiferal assemblages in two different locations from the southwest of Karaman City(southern Turkey).In both places,blocks/slices and pebbles of various origins are embedded within a highly sheared matrix of Late Cretaceous Age,and the whole unit can be regarded as a sedimentary mé*** ages of the blocks from the southwest of Karaman City range from the Late Serpukhovian(Late Mississippian)to Late Capitanian(Middle Permian)with some depositional breaks(e.g.,Bashkirian,Kasimovian).Combined with the previous data from the Mersin Mélange,which also include the remnants of the Beyşehir-Hoyran Nappes,our new findings suggest that a shallowing-upward sequence,characterized by a shallow water environment with foraminifera-bearing limestones,was deposited over the Tournaisian pelagic sequence in the Beyşehir-Hoyran Nappes till the Early Moscovian(Early Middle Pennsylvanian).This shallowing-upward sequence in the Beyşehir-Hoyran Nappes could be related to the Late Paleozoic Glaciation on the Gondwana supercontinent(Glacial Ⅱ),which resulted in a sea-level drop and deposition of platform carbonates during the Viséan–Early Moscovian(Middle Mississippian to Early Middle Pennsylvanian)time *** absence of the main part of the Middle-Upper Pennsylvanian deposits(continental phase during the Middle Moscovian–Middle Gzhelian)in the Beyşehir-Hoyran Nappes can be mainly attributed to the occurrence of a mantle plume and partially to the effect of Late Paleozoic Gondwanan Glaciation(Glacial Ⅲ).Progressive uplifting by the buoyant mantle plume material has resulted in rifting at the center of the basin where the Beyşehir-Hoyran Nappes have *** rifting process led to tectonic destabiliz

关键词： foraminifera Carboniferous and Permian Beyşehir-Hoyran Nappes plume rifting Neotethys paleontology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

How has the COVID-19 pandemic changed treatment preferences of patients with proximal ureteral stones?

引用

Current Urology 2024年第1期18卷 66-70页

作者： Ali kaan Yildiz Ahmet Varan Hakan Kurt Omer Gokhan Doluoglu Berat Cem Ozgur Department of Urology University of Medical SciencesAnkara Training and Research HospitalAnkaraTurkey

Background:The impact of the coronavirus disease 2019(COVID-19)pandemic on patient decision making remains *** study aimed to investigate the effect of the pandemic on treatment preferences of patients with proximal ureteral *** and methods:Retrospective data regarding treatment preferences of patients diagnosed with symptomatic proximal ureteral stones between July 2018 and November 2021 at a single center were *** from 493 patients were analyzed according to 2 groups,including patients diagnosed during the COVID-19 pandemic and those diagnosed during an equivalent period of time before the ***:Preference for conservative treatment increased during the COVID-19 pandemic(p=0.009).In patients who had previously undergone shock wave lithotripsy(SWL),the preference for SWL decreased and the preference for conservative treatment increased during the COVID-19 pandemic(p=0.042).Multiple logistic regression analysis revealed a significant correlation between a preference for conservative treatment during the pandemic and no prior spontaneous stone passage(p=0.003;odds ratio[OR],2.48;95%confidence interval[CI],1.45-4.23),no hydronephrosis(p=0.035;OR,3.57;95%Cl,1.34-9.49),and a visual analog scale score of 4 or less(p=0.018;OR,1.97;95%Cl,1.15-3.38).Conclusions:A significant increase in the preference for conservative treatment was observed among patients diagnosed during the pandemic,and patients with a history of SWL demonstrated a preference shift from SWL to conservative treatment.

关键词： COVID-19 pandemic Treatment preference Ureter Urolithiasis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Alternating Cell Direction Implicit Method using Approximate Factorization on Hybrid Grids

引用

Advances in Applied Mathematics and Mechanics 2022年第3期14卷 539-576页

作者： Ali Ruhsen Cete Oguz kaan Onay Adana Alparslan Turke¸s Science and Technology University AdanaTurkey Middle East Technical University AnkaraTurkey

In this study,a novel fast-implicit iteration scheme called the alternating cell direction implicit(ACDI)method is combined with the approximate factorization *** application aims to offer a mathematically well-deﬁned version of the ACDI method and to increase the accuracy of the iteration scheme used for the nu-merical solutions of partial differential *** ACDI method is a fast-implicit method that can be used for unstructured *** use of fast implicit iteration meth-ods with unstructured grids is not common in the *** new ACDI method has been applied to the unsteady diffusion equation to determine its convergence and time-dependent solution ability and *** numerical tests are conducted for different grid types,such as structured,unstructured quadrilateral,and hybrid polygonal ***,the ACDI was applied to the unsteady advection-diffusion equation to understand the time-dependent and progression capabilities of the pre-sented ***,a full potential equation solution is created to understand the complexﬂow solving ability of the presented *** results of the numerical study are compared with other fast implicit methods,such as the point Gauss–Seidel(PGS)and line Gauss–Seidel(LGS)methods and the fourth-order Runge-Kutta(RK4)method,which is an explicit scheme,and the Laasonen method,which is a fully im-plicit *** study increased the abilities of the ACDI *** to the new ACDI method,the approximate factorization method,which is used only in structural grids that are known to be advantageous,can be applied to any mesh structure.

关键词： Approximate factorization ACDI method fast implicit schemes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dual-Port Content Addressable Memory for Cache Memory Applications

引用

Computers, Materials & Continua 2022年第3期70卷 4583-4597页

作者： Allam Abumwais Adil Amirjanov kaan Uyar Mujahed Eleyat Department of Computer Engineering Near East UniversityNicosiaN.Cyprus via Mersin-10Turkey Computer Systems Engineering Arab American UniversityJenin240Palestine

Multicore systems oftentimes use multiple levels of cache to bridge the gap between processor and memory *** paper presents a new design of a dedicated pipeline cache memory for multicore processors called dual port content addressable memory(DPCAM).In addition,it proposes a new replacement algorithm based on hardware which is called a near-far access replacement algorithm(NFRA)to reduce the cost overhead of the cache controller and improve the cache access *** experimental results indicated that the latency for write and read operations are significantly less in comparison with a set-associative cache ***,it was shown that a latency of a read operation is nearly constant regardless of the size of ***,an estimation of the power dissipation showed that DPCAM consumes about 7%greater than a set-associative cache memory of the same *** results encourage for embedding DPCAM within the multicore processors as a small shared cache memory.

关键词： Multicore system content addressable memory dual port CAM cache controller set-associative cache power dissipation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Secondary endoresection for previously treated choroidal melanomas with a non-responsive course and persistent exudative retinal detachment

引用

International Journal of Ophthalmology(English edition) 2022年第2期15卷 276-283页

作者： Ahmet kaan Gündüz Ibadulla Mirzayev Department of Ophthalmology Ankara University Faculty of MedicineAnkara 06590Turkey Private Eye Clinic Ankara 06590Turkey Department of Ophthalmology Dünyagoz HospitalAnkara 06540Turkey

AIM:To evaluate the results and complications of secondary endoresection via pars plana vitrectomy for choroidal melanoma and review the previously reported endoresection studies on the treatment of choroidal ***:The medical records of 6 patients with choroidal melanoma who underwent secondary endoresection between March 2012 and March 2020 were retrospectively *** indications for secondary endoresection were progressive or recurrent tumor and severe exudative retinal detachment after previous treatment with plaque radiotherapy/Cyberknife radiosurgery/transpupillary thermotherapy(TTT).RESULTS:Before endoresection,2 eyes had Iodine-125 plaque radiotherapy and TTT,1 eye had Ruthenium-106 plaque radiotherapy and TTT,1 eye had Cyberknife radiosurgery and TTT,1 eye had Cyberknife radiosurgery,and 1 eye had TTT *** visual acuity ranged from 20/63 to 20/1600(Snellen) and from 0.5 to 1.9(mean:1.1) on the log MAR *** mean tumor base diameters were 9.5×8.7 mm and the mean tumor thickness was 5.4 *** secondary endoresection,transient vitreous hemorrhage developed in 2(33.3%) eyes and retinal detachment in 1(16.7%) *** examination revealed epithelioid cell melanoma in 4(66.7%) eyes and mixed cell melanoma in 1(16.7%).Melanoma cell type was not specified in 1(16.7%) *** a mean follow-up of 49.6 mo(range:16-90 mo),mean visual acuity did not improve and 1 eye was enucleated due to tumor *** visual acuity ranged from 20/63 to 20/1600(Snellen) and from 0.5 to 1.9(mean:1.2) on the log MAR *** patients with choroidal melanoma developed metastasis and eventually ***:Secondary endoresection seems to be an effective treatment option for globe salvage in choroidal melanoma not responsive to conventional treatment and displaying persistent exudative retinal *** was no visual acuity increase among the treated eyes but globe salvage was possible in most cases in this study.

关键词： endoresection choroidal melanoma metastasis pars plana vitrectomy recurrence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Electrophysiological evaluation of alterations in penile sensation due to penile prosthesis implantation in patients with erectile dysfunction

引用

Asian Journal of Urology 2023年第4期10卷 541-545页

作者： İbrahim Erol Ali Yıldız kaan Karamık Hakan Anıl Ekremİslamoğlu TuncayÇakır Mutlu Ateş Murat Savaş Department of Urology Antalya Training and Research HospitalUniversity of Health SciencesAntalyaTurkey Department of Physical Medicine and Rehabilitation Antalya Training and Research HospitalUniversity of Health SciencesAntalyaTurkey

Objective The present study was aimed to determine the effect of penile prosthesis implantation(PPI)surgery on penile sensation by evaluating the penile electromyography(EMG)*** The research was designed as a prospective *** patients who were diagnosed with organic erectile dysfunction and had underwent PPI surgery between January 2017 and January 2018 in the Urology Clinic of Antalya Training and Research Hospital were included in this *** sensory EMG was performed on each patient 1 day prior to the surgery by the Physical Therapy and Rehabilitation ***,the control EMG study was also performed in the 3rd and 6th postoperative *** We included 27 patients in this study who attended regular follow-ups and had complete EMG *** of the 27 patients,23(85.2%)patients had received malleable(ProMedon)penile prosthesis,one(3.7%)patient had received a two-piece inflatable(Ambicor)penile prosthesis,and three(11.1%)patients had received a three-piece inflatable(AMS 700 CXR)penile *** mean nerve conduction value(NCV)of the patients was 29.85(standard derivation:22.54;range:0-78.4)m/s during the preoperative period,whereas it was 27.64(standard derivation:24.72;range:0-83.3)m/s in the 3rd postoperative month and 24.80(standard derivation:22.31;range:0-88.4)m/s in the 6th postoperative *** was no significant difference between preoperative NCV and 3rd postoperative month NCV(p=0.607).Similarly,no significant difference was observed between preoperative NCV and 6th postoperative month NCV(p=0.276).Additionally,the change between NCV values at postoperative 3rd and 6th months was not statistically significant(p=0.553).Conclusion Significant loss of penile sensation does not occur in patients who undergo PPI surgery.

关键词： Penile prosthesis Penile sensation Electromyography Erectile dysfunction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bladder calculi concomitant with benign prostatic enlargement:is prostate surgery mandatory in patients who have never received medical therapy?

引用

Asian Journal of Andrology 2023年第5期25卷 604-607页

作者： Hakan Anil Umut Unal kaan Karamik Ferhat Ortoglu Hakan Ercil Department of Urology Adana City Training and Research HospitalAdana 01000Turkiye Department of Urology Korkuteli State HospitalAntalya 07000Turkiye

The historical dogma that bladder calculi comprise the main indication for prostatic surgery has recently been *** this study,we aimed to predict which patients should undergo simultaneous prostate and bladder calculi surgery or only bladder calculi removal by evaluating preoperative risk *** hundred and seventeen men with bladder stones and concomitant benign prostate enlargement(BPE)who had not received medical treatment before were included in the *** the first step,only the bladder calculi of patients were removed and medical treatment was given for *** patients who benefited from medical treatment during the follow-up were defined as Group 1 and the patients who required prostate surgery for any indication comprised Group *** factors for prostate surgery requirements were determined by comparing preoperative characteristics between the two groups with a cox regression *** the follow-up of 117 patients with bladder stones removed and medical treatment initiated,49(41.9%)patients had prostate surgery *** indication for 33(67.3%)of 49 patients was medical treatment *** presence of intravesical prostatic protrusion(IPP;hazard ratio:2.071,95%confidence interval[Cl]:1.05-4.05,P=0.034),and high postvoiding residual urine volume(hazard ratio:1.013,95%Cl:1.007-1.019,P<0.001)were found to be preoperative risk factors for needing future prostate *** patients who have not received medical treatment for BPE before,bladder calculi developing secondary to BPE do not always constitute an indication for prostate surgery.

关键词： benign prostate hyperplasia bladder calculi intravesical prostatic protrusion medical therapy prostate surgery

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

EOS of neutron-rich matter and pure neutron matter

引用

Science China(Physics,Mechanics & Astronomy) 2012年第3期55卷 443-449页

作者： MANISA kaan Physics Department Dumlupinar UniversityKütahya 43100Turkey

We report the equation of state(EOS) of pure neutron matter(PNM) and neutron-rich matter(NRM) for the realistic Urbana V 14 two nucleon interaction,obtained by using a Variational Monte Carlo(VMC) ***,many body interactions are included as a phenomenological density dependent term in the *** binding energy per nucleon is calculated for different densities and various isospin asymmetry *** results on NRM and PNM are compared with relativistic Brueckner-Hartree-Fock theory and relativistic Hartree-Fock model with the unitary correlation operator *** results obtained in this study show reasonable agreement with both of these relativistic Hartree-Fock *** also compare the binding energies obtained in this study with those obtained by various authors employing different methods and techniques.

关键词： Brueckner-Hartree-Fock理论中子物质 EOS 核子相互作用变分蒙特卡罗自然资源管理相对论状态方程

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Possible relationship between refractory celiac disease and malignancies

引用

World Journal of Clinical Oncology 2022年第3期13卷 200-208页

作者： kaan Demiroren Department of Pediatric Gastroenterology University of Health SciencesYuksek Ihtisas Teaching HospitalBursa 16000Turkey

Celiac disease(CeD)is a chronic autoimmune disorder that is triggered by gluten in genetically susceptible individuals,and that is characterized by CeD-specific antibodies,HLA-DQ2 and/or HLA-DQ8 haplotypes,enteropathy and different clinical pictures related to many *** lymphoma may develop as a result of refractory *** a patient diagnosed with CeD is symptomatic despite a strict gluten-free diet for at least 12 months,and does not improve with severe villous atrophy,refractory CeD can be considered *** second of the two types of refractory CeD has abnormal monoclonal intraepithelial lymphocytes and can be considered as pre-lymphoma,and the next picture that will emerge is enteropathy-associated T-cell *** manuscript addresses"CeD and malignancies"through a review of current literature and guidelines.

关键词： Refractory celiac disease Enteropathy-associated T-cell lymphoma Prelymphoma Low grade lymphoma

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：