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Engineers at MIT and Caltech have demonstrated an ingestible sensor whose location can be monitored as it moves through the digestive tract, an advance that could help doctors more easily diagnose gas...
GEM–THE FIRST GI ERASMUS MUNDUS MASTERS COURSE
Capacity building Education Spatial science
2015/12/22
The Master of Science course “Geo-information Science and Earth Observation for Environmental Modelling and Management”(GEM) is an 18 months GI education offered by four European Universities. In this...
TOWARDS A SUSTAINABLE E-LEARNING SOLUTION FOR GI-EDUCATION
eLearning GIS geoinformatics online learning
2015/8/24
Computer aided learning, also known as eLearning, plays a decisive role for technology-orientated subjects with a high innovation
rate and it is an indispensable aid to support the process of lifelo...
MAP SAMPLES TO HELP GI USERS SPECIFY THEIR NEEDS.
威力之王——0.50英寸GI手枪
威力之王 0.50英寸 GI手枪
2014/12/8
早在1971年出品的影片《辣手神 探夺命枪》(Dirty Harry)中，男主角哈里警官手持史密斯-韦森公司0.44英寸马格努姆手枪的形象，给那个年代的美国人留下极为深刻的印象。在片中，哈里声称他手中的枪是“世界 上威力最大的手枪”。的确，0.44英寸马格努姆手枪一度足以谓之为“威力王”，不过现今，0.50英寸GI手枪更是毫无悬念地超越0.44英寸马格努姆手枪，成为新的“威力王”手枪。
美国枪械艺术工业公司不久前推出的0.50英寸GI手枪堪称手枪中的“威力王”，但该枪价格走高，限制了其占领更大的市场。为此，公司改变策略，推出了基于格洛克手枪的0.50 英寸GI转换套件，从而使常规手枪变身“威力王”。
Generation and Transmission of FCC-Compliant Impulse Radio Ultra Wideband Signals over 100-m GI-POF
Transmission FCC-Compliant Impulse Radio Ultra Wideband Signals
2015/7/20
We demonstrate a novel technique for generation and transmission of IR-UWB signals over 100 metres 50- μ m core GI-POF. IR-UWB pulses are made by linearly combining two 3 rd -order derivatives of Gaus...
4 Gbit/s over 50-m Large Core Diameter GI-POF using Low-cost VCSEL
Large Core Diameter GI-POF Low-cost VCSEL
2015/7/15
We report record transmission systems over 50 metres of 900-μm core diameter graded-index POF using a low-cost VCSEL at 667 nm. A net bit rate of 4 Gbit/s is achieved with BER < 10 -3 .
GI/Gm排队系统梯度估计的一种新方法
局部函数表达式 排队系统 梯度估计
2008/12/31
梯度估计是研究复杂离散事件动态系统的关键问题之一.这里对GI/G/m排队系统提
出一种新方法,在一次采样(仿真)的基础上,通过分析采样路径,可得到性能指标关于参数的
局部函数表达式.由此可直接求导,得到采样梯度,并证明了由该方法得到的梯度估计的无偏
性.该方法计算量小、精度高,还可以进一步拓广到其它系统上.