Photometric Calibration for Automated Multispectral Imaging of Biological Samples
Photometric Calibration for Automated Multispectral Imaging of Biological Samples ~ II. MULTISPECTRAL IMAGING The core element of any spectral imaging system is the spectral dispersion component which separates the light into its spectral components, and is coupled to a two-dimensional (2D) optical detector such as a CCD camera, or to an array of photomultiplier tubes [...]
August 31, 2012 | Posted in : Aerospace & Aeronautics | There’s no comment yet | » read more . . .
Report of workshop on clean and inexhaustible space solar power at unispace iii conference
Report of workshop on clean and inexhaustible space solar power at unispace iii conference ~ 3. FINDINGS CONCERNING SPACE SOLAR POWER Energy demand in the world, especially in devel- oping countries, is growing rapidly. Fossil fuels, presently the dominant source of primary energy, present significant problems. The most critical concern is over the risk of [...]
August 31, 2012 | Posted in : Aerospace & Aeronautics | There’s no comment yet | » read more . . .
Analytic theory of orbit contraction due to atmospheric drag
Analytic theory of orbit contraction due to atmospheric drag ~ Abstract–The motion of a satellite in orbit, subject to atmospheric force and the motion of a reentry vehicle are governed by the same forces, namely, ffravitational and aerodynamic. This susgests the derivation of a uniform set of equations applicable to both cases. For the case [...]
August 31, 2012 | Posted in : Aerospace & Aeronautics | There’s no comment yet | » read more . . .
Nano/ Micro Satellite Constellations for Earth and Space Science
Nano/ Micro Satellite Constellations for Earth and Space Science ~ Spacecraft constellations are becoming a reality for NASA’s Earth and Space science, with the first steps already under way in building the infrastructure and knowledge base required for their implementation. In this paper we provide updated information on nano/micro satellite constellation missions either within NASA’s [...]
August 31, 2012 | Posted in : Aerospace & Aeronautics | There’s no comment yet | » read more . . .
Numerical simulation of human orientation perception during lunar landing
Numerical simulation of human orientation perception during lunar landing ~ Numerical implementation of the Observer model pre- dicts the astronauts’ perceived orientation of the vehicle. These calculated perceptions can be compared to the actual orientation of the vehicle during a landing, to determine misperceptions and potential spatial disorientation. Three example trajectories are analyzed using the [...]
August 31, 2012 | Posted in : Aerospace & Aeronautics | There’s no comment yet | » read more . . .
Sex Imbalance, Marriage Competition, and Entrepreneurship: Evidence from rural China
Sex Imbalance, Marriage Competition, and Entrepreneurship: Evidence from rural China ~ Our study is also related to the literature on gender differences in entrepreneurial behavior. Brush (1990, 1992) and Langowitz and Minniti (2005) find that the factors influencing female and male entrepreneurship tend to be the same. Despite these similarities, it is well documented that [...]
August 31, 2012 | Posted in : Business | There’s no comment yet | » read more . . .
Developing an Effective Entrepreneurship Program Assessment: Adapting a Model from the Creative Disciplines
Developing an Effective Entrepreneurship Program Assessment: Adapting a Model from the Creative Disciplines ~ The literature related to entrepreneurship education indicates a lack of information regarding assessment practice (Pittaway et al. 2009). In general, there are few valid and reliable assessments in the field of entrepreneurship education (Duval-Couetil, Reed-Rhoads, and Haghighi 2010). The complexity of [...]
August 31, 2012 | Posted in : Business | There’s no comment yet | » read more . . .
(Work)life after work?: Older Entrepreneurship in London – Motivations and Barriers
(Work)life after work?: Older Entrepreneurship in London – Motivations and Barriers ~ The results found that older entrepreneurship has the capacity to provide work- flexibility, enabling them to undertake other duties. This includes care for elderly relatives or partners, but also the care of grandchildren, and other voluntary work. This ability to strike a balance [...]
August 31, 2012 | Posted in : Business | There’s no comment yet | » read more . . .
FPGA based Multichannel Optical Concentrator SIMCON 4.0 for TESLA cavities LLRF Control System
FPGA based Multichannel Optical Concentrator SIMCON 4.0 for TESLA cavities LLRF Control System ~ Speed of the system, and especially the clock rate of DSP, is the most important factor influencing the quality and stability of the beam. With the speed in mind, there were undertaken research efforts to built LLRF generation of control systems [...]
August 30, 2012 | Posted in : Technology & Programming & Computer | There’s no comment yet | » read more . . .
An inexpensive, microprocessor-based, data logging system
An inexpensive, microprocessor-based, data logging system ~ 2. Overview of the data logger system Our data logging system is composed of two separate units, a “logger” and a “reader” which work with a host computer (Fig. 1). The logger is a 3 Â 13 cm circuit board with an 8-bit microcontroller chip (PIC 16C73A, Microchip [...]
August 30, 2012 | Posted in : Technology & Programming & Computer | There’s no comment yet | » read more . . .
Design Guidelines for High-Performance, Multichannel, Simultaneous- Sampling ADCs in Data-Acquisition Systems
Design Guidelines for High-Performance, Multichannel, Simultaneous- Sampling ADCs in Data-Acquisition Systems ~ Figure 2. Typical motor-control systems. Each ADC device in Figure 2 simultaneously samples inputs and eliminates the need for complicated DSP algorithms that realign sequentially sampled data into a simultaneous sample set. Main Sources of Noise and Interference Affecting Industrial Data-Acquisition Systems (DAS) [...]
August 30, 2012 | Posted in : Technology & Programming & Computer | There’s no comment yet | » read more . . .
Bandgap Reference Calculator Tutorial
Bandgap Reference Calculator Tutorial ~ The BGRC is an excellent teaching tool; it allows one to design theoretically perfect bandgap circuits. The subjects explored include first-order trimming to minimize the slope of the error with temperature, and the optimization of the second-order curvature correction circuit. It also includes warnings to avoid the pitfalls of the [...]
August 30, 2012 | Posted in : Technology & Programming & Computer | There’s no comment yet | » read more . . .
