هدف انتخاب تأمین‌کنندگان و تخصیص سفارش بر اساس ابعاد پایداری ریسک پایداری، در شرایط عدم‌­قطعیت برخی پارامترها است؛ همچنین با محدودیت استراتژی کاهش برای مدیریت همراه است. معیارهای ریسک، امتیاز توسط روش‌های تاپسیس فازی تجزیه‌وتحلیل آثار شکست محاسبه شده است سپس برنامه تصادفی چندمرحله‌ای ایجاد معیار ارزش معرض شرطی، پیرامون تأمین منابع یک فضای چند­دوره‌ای برنامه‌‎ریزی دستیابی به برنامه‌ریزی انعطاف‌پ...

حدود ۸۰% از حمل‌ونقل جهانی در بستر دریا انجام می‌شود؛ بنابراین، به‌منظور حفظ ایمنی عبورومرور کشتی‌ها، پیش‌بینی دقیق حرکت آنها اهمیت ویژه‌ای دارد. ازآن‌جاکه پارامترهای زمینه‌ای گوناگونی کشتی‌ها تأثیر می‌گذارد، یکی چالش‌های اصلی حوزة محاسبات زمینه‌ـ آگاه شناسایی بهینة مؤثر کشتی است که ضرورت تحقیق حاضر را می‌رساند. این راستا، با استفاده شبکة عصبی حافظة طولانی کوتاه‌ـ مدت و انتخاب پارامتر به‌شیوة پ...

This paper is aimed to the determination of optical pseudogap values in phases with argyrodite structure by a simple method diffuse reflectance spectroscopy. Samples (Cu1-xAgx)7PSe6 (x = 0, 0.2, 0.3, 0.4, 0.6, 0.7, 0.9, 1.0) solid solutions were obtained form microcrystalline powders grinding agate mortar. The spectra samples studied spectral range 220–1400 nm (293 K) and analyzed using Kubelka...

In this study, undoped and Cd-doped SnO thin movies with unique atomic contents (0, 2, 4, six%) have been synthesized by means of the sol-gel method. The modifications in optoelectrical residences Cd doped samples had investigated aid UV-VIS-NIR spectroscopy. impact doping at optical homes films becomes spectrophotometric measurements. constants (refractive index, n, absorption okay) determined...

The optical constants and dielectric function of (001) LaAlO 3 crystal were investigated at low temperatures down to 10 K in the NIR-VUV spectral range (photon energies 0.8-8.8 eV). Reflection variable angle spectroscopic ellipsometry transmission spectroscopy applied. Interband transitions examined using Tauc plots critical-point analysis. At room temperature, indirect bandgap 5.6 ± 0.01 eV lo...

This study aims to analyse the use of biowaste-derived carbon in enhancing photocatalytic effect Earth-abundant visible light active goethite (??FeOOH). The biowaste material used this case is seeds Indian blackberry fruit. FeOOH/C composite has been synthesized using an assisted sonochemical technique. photocatalysts have characterized powder x-ray diffraction, nitrogen adsorption isotherms an...

Different nanostructured semiconducting ZnO photoanodes were prepared by Hydrothermal (HT), Co-precipitation (CoP) and Chemical Bath Deposition (CBD) methods for their use in the Dye Sensitized Solar Cells (DSSCs) present study. Additionally, different nanocomposites synthesized mixing Carbon Nanotubes (CNTs), Graphene Oxide (GO) combination with nanostructures. Scanning electron microscopy (SE...

The development of CdMgO ternary alloy with a single cubic phase is challenging but meaningful work for technological advancement. In this work, we have grown series Cd1-xMgxO random alloys various Mg concentrations (x = 0, 30, 32, 45, and 55%) on quartz substrate by plasma-assisted molecular beam epitaxy (PA-MBE) technique. structural investigations were performed using the X-ray diffraction (...

A simple user-friendly software named PRISA has been developed to determine optical constants (refractive index and extinction co-efficient), dispersion parameters (oscillator energy energy), absorption co-efficient, band gap thickness of semiconductor dielectric thin films from their measured transmission spectrum, only. The thickness, refractive index, co-efficient the have derived using Enve...