SCI Библиотека

Sustainable and cost-effective long-term storage remains
an unsolved problem. The most widely used storage technologies today are magnetic (hard disk drives and tape). They use media that degrades over time and has a limited lifetime, which leads to inefficient, wasteful, and costly solutions for long-lived data. This paper presents Silica: the first cloud stor-
age system for archival data underpinned by quartz glass,
an extremely resilient media that allows data to be left in
situ indefinitely. The hardware and software of Silica have
been co-designed and co-optimized from the media up to the
service level with sustainability as a primary objective. The
design follows a cloud-first, data-driven methodology underpinned by principles derived from analyzing the archival workload of a large public cloud service. Silica can support
a wide range of archival storage workloads and ushers in a new era of sustainable, cost-effective storage.

This report describes results of a field study conducted to assess the utility of using polarization-augmented thermal vision to enhance autonomous vehicle operation. In particular, polarimetric and conventional long-wave infrared (LWIR) video was recorded for a variety of nighttime driving scenarios conducted in both rural and urban environments. An uncooled microbolometer-based LWIR polarimetric camera sensor capable of recording simultaneous conventional thermal and polarimetric video imagery was used. Results showed improved spatial detail and information content for polarization-augmented thermal imagery when compared to conventional thermal only

We present a polarimetric thermal face database, the
first of its kind, for face recognition research. This
database was acquired using a polarimetric longwave
infrared imager, specifically a division-of-time spinning
achromatic retarder system. A corresponding set of visible
spectrum imagery was also collected, to facilitate cross-
spectrum (also referred to as heterogeneous) face
recognition research. The database consists of imagery
acquired at three distances under two experimental
conditions: neutral/baseline condition, and expressions condition. Annotations (spatial coordinates of key fiducial points) are provided for all images. Cross-spectrum face recognition performance on the database is benchmarked using three techniques: partial least squares, deep perceptual mapping, and coupled neural networks

Infrared polarimetry is an emerging sensing modality that offers the potential for significantly enhanced contrast in
situations where conventional thermal imaging falls short. Polarimetric imagery leverages the different polarization
signatures that result from material differences, surface roughness quality, and geometry that are frequently different from
those features that lead to thermal signatures. Imaging of the polarization in a scene can lead to enhanced understanding,
particularly when materials in a scene are at thermal equilibrium. Polaris Sensor Technologies has measured the
polarization signatures of oil on water in a number of different scenarios and has shown significant improvement in
detection through the contrast improvement offered by polarimetry. The sensing improvement offers the promise of
automated detection of oil spills and leaks for routine monitoring and accidents with the added benefit of being able to
continue monitoring at night. In this paper, we describe the instrumentation, and the results of several measurement
exercises in both controlled and uncontrolled conditions

В работе представлен краткий обзор подходов для моделирования взаимодействия
поляризованного света с мутными рассевающими средами. В данной работе представлены несколько
реализаций программ Монте–Карло, отслеживающих состояние поляризации рассеянного света. Рассмотрено
несколько классов моделей, основанных на формализме Стокса–Мюллера и формализме Джонса.
Проанализированы их преимущества и недостатки

В работе представлено решение задачи рассеяния света на хаотически ориентированных частицах
неправильной формы для частиц размерами 100, 140, 170 и 200 мкм для длины волны 0,532 мкм для различных
показателей преломления. Решение строилось как в рамках физической оптики (для направления рассеяния строго
назад), так и геометрической оптики (для углов рассеяния в диапазоне от 0 до 180 градусов). Полученные решения
позволили построить диаграмму зависимости геометрического альбедо частицы от максимальной степени
поляризации для проверки эффекта Умова. Установлено, что при мнимой части показателя преломления меньше
0,001 эффект Умова выполняется с хорошей точностью. Однако, для случая, когда мнимая часть показателя
преломления больше 0,001 и в решении начинает доминировать зеркальная компонента рассеянного излучения,
эффект Умова нарушается

В статье говорится о существующих современных методах
литографии. Описаны общие шаги процесса литографии в
полупроводниковом производстве. Рассмотрены тенденции развития
полупроводниковой промышленности в целом.
Произведен анализ методов литографии на основе информации о
современной полупроводниковой промышленности, и выбран наиболее
инновационный метод литографии: электронная лучевая литография, – как
метод, позволяющий повысить технологически уровень полупроводниковой
промышленности