Community articles — Reports

The joining of ceramics with metals is widely used in aerospace engineering where high strength and excellent heat insulation materials are desired. In this paper, a new multifunctional bolted joint with load bearing-heat insulation integration is prepared with porous ZrO2/(ZrO2+Ni) sandwich ceramics. Double-shear behavior of the bolted joint connecting C/SiC plates is analyzed by ABAQUS codes. It is found that shearing damage occurs at shearing faces of the bolt, the shearing failure faces are layered rather than smooth. To improve its shearing strength, we introduce the shear band (ZrO2+V%Ni of thickness h) to its shearing faces. Results show that the shear band can improve the shearing strength and slow down the attenuation of load bearing capacity after reaching the shearing strength, without obviously increasing the thermal conductivity. An optimal structural design is performed and proper shear band is defined to balance the shearing strength and heat insulation performance of the ceramic joint.

Mecánica V. tarea 2

Reporte

Trong thời buổi hiện nay, CNTT không chỉ là phương tiện hỗ trợ cho cuộc sống, nhu cầu cá nhân mà còn được xem như thước đo về sự phát triển của bất kì một tổ chức, quốc gia nào. Việc triển khai các hệ thống quản lý giúp gia tăng năng suất hoạt động một cách hiệu quả, giảm thiểu tối đa tình trạng sai sót do ảnh hưởng về mặt tâm sinh lý con người. Tuy nhiên, hiện vẫn không ít các khách sạn vừa và nhỏ chỉ thực hiện công việc quản lý khách sạn thủ công. Do đó, đồ án này được thiết kế nhằm tối ưu hóa các công việc thủ công lặp đi lặp lại, tránh tình trạng sai sót và thiếu chính xác trong vấn đề quản lý khách sạn.

Classifying pulmonary nodule CT images as either benign or malignant, using a trained Residual Neural Network.

juego de ajedrez

With the detectors currently off, LIGO has detected and gathered an abundance of data from the second observing run (O2). Some of which, captures the most recent triggers that are potential candidates for future gravitational waves, are analyzed more thoroughly. My responsibility as a student researcher is to perform independent checks on four of the most recent Compact Binary Coalescence (CBC) triggers. In order to do so, I compare the \(h(t)\) Omega scans of these events to the Gravity Spy classes. Omega scans are a detector characterization tool to help measure the Signal-to-Noise-Ratio (SNR) of transient noises during detections. This helps scientists distinguish the difference between a gravitational wave signal, which looks like a `chirp' versus a glitch in the data. Gravity Spy is a citizen science program that helps LIGO in classifying glitches to improve machine learning for gravitational wave signals. For each event I determine if it looks like one of the known categories of solved or unsolved glitches seen in the Advanced LIGO detectors? My results are then recorded in the O2 event detection checklist. Omega scans are a `burst-type' search pipeline that detect glitches efficiently. The Omega scan is labeled using time measured in seconds on the x-axis, frequency measured in Hz on the y-axis and the signal measured is normalized to demonstrate how `loud' the noise is.

The aim of the experiment is to study elliptically polarized light using a Fresnel rhomb and to determine the ratio of semi major axis to the semi minor axis of the various elliptically polarised light forms for different angles of plane polarised incidence at the rhomb

Este trabalho tem a missão de explicar alguns temas de sistemas distribuídos, estes sistemas são fundamentais para a comunicação, integração e processamento de dados via internet ou rede local. Ao longo do trabalho abordaremos os principais tópicos tais como: WebServices, Padrões de Sockets entre outros.