نتایج جستجو برای: راهکارهای اجرای pca

تعداد نتایج: 72364  

Journal: :The Journal of clinical investigation 2014
Jason Boyang Wu Chen Shao Xiangyan Li Qinlong Li Peizhen Hu Changhong Shi Yang Li Yi-Ting Chen Fei Yin Chun-Peng Liao Bangyan L Stiles Haiyen E Zhau Jean C Shih Leland W K Chung

Tumors from patients with high-grade aggressive prostate cancer (PCa) exhibit increased expression of monoamine oxidase A (MAOA), a mitochondrial enzyme that degrades monoamine neurotransmitters and dietary amines. Despite the association between MAOA and aggressive PCa, it is unclear how MAOA promotes PCa progression. Here, we found that MAOA functions to induce epithelial-to-mesenchymal trans...

2015
Benjamin Eltzner Stephan Huckemann Kanti V. Mardia

There are several cutting edge applications needing PCA methods for data on tori and we propose a novel torus-PCA method with important properties that can be generally applied. There are two existing general methods: tangent space PCA and geodesic PCA. However, unlike tangent space PCA, our torus-PCA honors the cyclic topology of the data space whereas, unlike geodesic PCA, our torus-PCA produ...

2004
E. Kokiopoulou

Principal component analysis (PCA) is an extensively used dimensionality reduction technique, with important applications in many fields such as pattern recognition, computer vision and statistics. It employs the eigenvectors of the covariance matrix of the data to project it on a lower dimensional subspace. Kernel PCA, a generalized version of PCA, performs PCA implicitly in a nonlinearly tran...

Journal: : 2022

هدف: هدف پژوهش حاضر، تبیین الگوی برنامه درسی سواد رسانه‌ای در دوره ابتدایی نظام آموزش و پرورش است.مواد روش‌ها: رویکرد حاکم بر کیفی با استفاده از روش نظریه داده بنیاد انجام شده است. شرکت‌کنندگان این پژوهش، متخصصان صاحب‌نظران حوزه رسانه هستند که نمونه‌گیری هدفمند، 15 نفر آنان مصاحبه شد. ابزار گردآوری داده‌ها، نیمه‌ساختارمند بود تعداد محقق به اشباع نظری رسید.بحث نتیجه‌گیری: برای تجزیه تحلیل داده‌ه...

Journal: :the modares journal of electrical engineering 2015
hamid reza shahdoosti hesan ghassemian

an ideal fusion method preserves the spectral information in fused image without spatial distortion. the pca is believed to be a well-known pan-sharpening approach and being widely used for its efficiency and high spatial resolution. however, it can distort the spectral characteristics of multispectral images. the current paper tries to present a new fusion method based on the same concept. in ...

گذرنامه‌ی الکترونیکی یکی از کاربردهای تکنولوژی شناسایی از طریق امواج (R‌F‌I‌D)، به‌عنوان سند مهم شناسایی و احراز هویت است. با توجه به اهداف سازمان ایکائومبنی بر مجهز شدن تمامی کشورها به گذرنامه‌ی الکترونیکی، افزایش امنیت و همچنین لزوم اجرای گذرنامه‌ی الکترونیکی در ایران، ضروری است تهدیدها و راهکارهای امنیتی گذرنامه‌ی الکترونیکی مورد تحقیق قرار گیرد. در این مقاله هدف بر آن است که برای اولین‌بار ...

2005
Eitan Fibach

Normal human monocytes and macrophages. as well as leukemic promyelocytes. generate potent procoagulant activity (PCA) resembling thromboplastin. In the present study only mild PCA was detected in a leukemic promyelocytic cell line (HL-60) and in promyelocytic cells induced to differentiate into neutrophils by dimethylsulfoxide (DMSO). After exposure to 1 2-O-tetradecanoylphorbol1 3-acetate (TP...

2015
Guang-Qian Xiao Pamela Unger Qi Yang Yayoi Kinoshita Kyra Singh Loralee McMahon Kent Nastiuk Kai Sha John Krolewski David Burstein

PLZF is a transcription repressor, which plays a critical role in development, spermatogenesis and oncogenesis. Down-regulation of PLZF has been found in various tumor cell lines. There has been virtually no tissue study on the expression of PLZF in prostate cancer (PCa). PCa is a heterogeneous disease, most of which are indolent and non-lethal. Currently there are no biomarkers that distinguis...

2014
Takeo Kosaka Akira Miyajima Mototsugu Oya

The first advance in the history of studies on prostate cancer (PCa) and androgens was the development of treatment with castration and administration of estrogen by Charles B. Huggins, who won the Nobel Prize in Physiology and Medicine. Since then, and for 70 years, androgen deprivation therapy has been the standard therapy for advanced PCa and the center of studies on PCa. However, recent adv...

2016
LEI SONG XUBIO XIE SHAOJIE YU FENGHUA PENG LONGKAI PENG

The dysregulation of miR‑126 has been reported to correlate with the progression of several cancer types. The present study demonstrated that miR‑126 was significantly downregulated in prostate cancer (PCa) tissues compared with normal prostate tissues. In vitro and in vivo studies indicated that forced overexpression of miR‑126 significantly suppressed the proliferation of PCa cell lines. Addi...

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