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Visual Data Tools is an independent software developer located in Chapel Hill, NC. We create tools for data science, numerical computation and image analysis for the macOS operating system. Visual Data Tools was founded in 2002 with the release of DataTank.

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A: Every twelve (12) months, you are entitled to a comprehensive eye examination, one (1) complete pair of routine eyeglasses or contact lenses. You also may be entitled to one pair of Visual Display Terminal (“VDT”) glasses or one pair of Safety Eyewear. Speak to your department’s Human Resources Representative for eligibility requirements.

近年来，随着科技的发展，视频终端视疲劳综合征（VDTS）的发病率不断上升。 大部分视频终端操作者在长时间注视屏幕后，常以"眼干、眼痛、头昏、视物模糊"等症状就诊。 目前，VDTS的发病机制尚不清楚，可能是多种因素共同作用的结果，比如工作环境、显示器画质、操作姿势等。 随着使用者的低龄化，VDTS的危害日益严重，因此如何采取相应的预防和治疗措施是当前亟待解决的问题。 本文归纳总结了近年来国内外关于VDTS治疗的相关研究，提供了改善视频终端操作 …

速度 v (t)是一条直线 ，对这条直线下面的三角形进行积分求面积就是路程。 上述两种方法，一个是横着切，一个是竖着切，无论怎么算都是一样的。 面前一块大饼，这两种方式一个是横着 …

2015年9月16日 · Please access Davis Vision’s website at www.davisvision.com and utilize the “Find a Doctor” feature, or call 1.800.999.5431 to access the Interactive Voice Response (IVR) Unit, which will supply you with the names and addresses of the network providers nearest you. What are the plan benefits, frequencies and costs? VDT (Occupational)

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This brochure provides highlights of the Verizon Vision Care Plan. You automatically receive vision care coverage at no additional cost when you enroll in a Verizon medical option. For more information please refer to your summary plan description. How do I receive services from a provider in the network?