A tunable snapshot imaging spectrometer has been demonstrated. A liquid crystal spatial light modulator (LC SLM) has been integrated into a computed tomographic imaging spectrometer (CTIS) to achieve tunability. The LC SLM allows for rapid, programmable, ...

Despite the fact that multi-chip modules (MCMs) are a critical dual use technology, the rapid commercialization of MCM-based systems depends on achieving an order of magnitude reduction in NRE costs and development time as well as assuring first pass succ...

... Title : THE EFFICIENT ACHIEVEMENT OF RAPID TECHNOLOGICAL PROGRESS-A MAJOR NEW PROBLEM IN PUBLIC FINANCE,. ...

The performance of liquid-crystal-over-silicon spatial light modulators has advanced rapidly in recent years. Most progress has centered around new device designs with increased bandwidth. In this paper we report on a number of techniques to improve the optical quality; these have applications in both current and future devices. PMID:20885635

Passive mode locking has been achieved in a XeCl laser with the gain duration over 150 ns. The saturation characteristics of absorber dyes including BBQ, BPBD, and PTP were measured, resulting in the lowest saturation intensity of BBQ. The almost 100% modulated train of 12 pulses was achieved with the rapid pulse ...

Major design goals for FED-R are the achievement of: (1) a high level of neutron exposure of the test modules and (2) a capability for rapid changeout of test modules. A major factor in rapid changeout is perceived to be the location of the vacuum boundary. In FED-R this boundary was set at the ...

We report on a proof-of-principle experiment with a novel thermal modulation device with potential use in LC�LC. It is based on the thermal desorption concept used in GC�GC. Pre-concentration of analytes eluting from the first-dimension column is performed in a capillary 'trap' column packed with highly retentive Porous Graphitic Carbon particles, placed in an aluminum ...

Low-cost hollow module rapidly converts into elevated platform for field applications. Module can be

Derivative deep-level spectroscopy was achieved with wavelength-modulated photocapacitance employing

The phrase 'bandwidth-compressive modulation' means that the compression is achieved not by removing

The capabilities of bistatic synthetic aperture radar to provide rapid update rate, real time covert radar surveillance to the military user are considered. The spatial resolution and sensitivity achievable from a tactical system using a small remotely piloted vehicle-borne transmitter and a static ground based receiver are discussed and the relative ...

Photovoltaic concentrator technology is experiencing rapid, significant advances in efficiency, cost and reliability, making it a leading candidate to add to the nation's electrical generating capacity in the next decade. This paper reviews the development path being pursued by the Department of Energy program to achieve its near-term energy cost goals and ...

We report on rapid fabrication of optical volume gratings in Foturan glass using a modulated femtosecond laser focused with cylindrical lenses. An optical volume grating with an area of 2 mm �3 mm and �2 mm thickness can be achieved within 10 min by use of this method. Optical micrography confirms the volume nature of the gratings ...

... operation. All conveyors and equipment were labeled ... Supply modules with 2 additional flex, and 2, 5' straight conveyors ...

An exothermic furnace module was developed to rapidly heat and cool a 0.820-in. (2.1 cm) diameter by

... USING AN ACOUSTO-OPTIC TUNABLE FILTER ... BAND OF OPTICAL FREQUENCIES WILL ... RAPID WAVELENGTH SWITCHING OR MODULATION ...

A WDM-compatible spectrally phase encoded-optical CDMA scheme is experimentally demonstrated. The system is based on the use of chromatic dispersion, chosen to achieve a first-order Talbot effect, to obtain a frequency-to-time mapping that allows subsequent coding/decoding of the signal spectrum by applying electro-optic phase modulation in the time ...

We wanted to compare the dosimetric difference and treatment efficiency of RapidArc and fixed gantry intensity-modulated radiotherapy treatment (IMRT) for multiple liver metastases. Computed tomography datasets of 10 patients were studied retrospectively. IMRT plans were generated using 5 fields and RapidArc using either 1 or 2 arcs. ...

The ability to rapidly command multi-robot behavior is crucial for the acceptance and effective utilization of multiple robot control. To achieve this, a modular- multiple robot control solution is being, pursued using the SMART modular control architecture. This paper investigates the development of a new dual-arm kinematics module ...

The 200 kWe uranium-nitride fueled lithium cooled fast reactor concept 'RAPID-L' to achieve highly automated reactor operation has been demonstrated. RAPID-L is designed for Lunar base power system. It is one of the variants of RAPID (Refueling by All Pins Integrated Design), fast reactor concept, ...

Analog-to-digital (A/D) and digital-to-analog (D/A) converters are important blocks in signal processing system because they provide the link between the analog world and digital systems. Compared with Nyquist-rate data converters, oversampling data converters are more desirable for modern submicron technologies with low voltage supplies. Today, all existing oversampling ...

Periodic diameter modulation of carbon nanotubes (CNTs) by quick temperature variation was successfully achieved in laser-assisted chemical vapor deposition process. Tapered and diameter-alternating CNTs were grown by periodic modulation of the temperature due to inverse relationship between the temperature and the diameter of the ...

... A desalination unit could also be module. ... If the modules can be efficiently arranged in the ship, volume savings can be achieved. ...

... contributed to the development of rapid online acquisition ... affective use of scaled information in the ... sufficient to meet DOD's stated goal of achieving ...

... compositions of niobium alloys produced by a ... solidification process, where rapid solidification was achieved ... solidified niobium alloy filaments were ...

conjunction with traditional testing as a means to achieve these high levels of assurance. In such a context, formal ... Feather Rapid Application of Lightweight ...

A multivariate hyperspectral imaging (MHI) instrument has been designed and constructed to achieve greatly increased Raman imaging speeds by utilizing a compressive spectral detection strategy. The instrument may be viewed as a generalized spectrometer, which can function either as a conventional monochromator or in a wide variety of other hyperspectral modalities. The MHI ...

A startup burner for rapidly heating a catalyst in a reformer, as well as related methods and modules, is disclosed.

... the tools IBM WebSphere and the LEIF help in achieving these developments. ... is a short-term project that involves rapid development; hence the ...

This paper analyses the experience of one individual in the development and delivery of an innovative, undergraduate leadership development module. The module is accessed by practising health care professionals in Malaysia as part of a top-up Honours Degree and is delivered solely using a virtual learning environment (VLE), in this case Blackboard. The aim ...

In response to the recognized need for high throughput biodosimetry methods for use after large scale radiological events, a logical approach is complete automation of standard biodosimetric assays that are currently performed manually. We describe progress to date on the RABIT (Rapid Automated BIodosimetry Tool), designed to score micronuclei or ?-H2AX fluorescence in ...

In response to the recognized need for high throughput biodosimetry methods for use after large-scale radiological events, a logical approach is complete automation of standard biodosimetric assays that are currently performed manually. The authors describe progress to date on the RABIT (Rapid Automated BIodosimetry Tool), designed to score micronuclei or gamma-H2AX ...

... This is achieved by a mechanism called decoupling that controls the connections among modules. The control of decoupling ...

We experimentally demonstrate a strong-field coherent control mechanism that combines the advantages of photon locking (PL) and rapid adiabatic passage (RAP). Unlike earlier implementations of PL and RAP by pulse sequences or chirped pulses, we use shaped pulses generated by phase modulation of the spectrum of a femtosecond laser pulse with a generalized ...

The High Resolution Dynamics Limb Sounder (HIRDLS) instrument onboard the NASA Aura spacecraft experienced a rupture of the thermal blanketing material (Kapton) during the rapid depressurization of launch. The Kapton draped over the HIRDLS scan mirror, severely limiting the aperture through which HIRDLS views space and Earth's atmospheric limb. In order for HIRDLS to ...

Free induction decay, FID, and rapid passage, RP, signals in nitrous oxide, under both optically thin and optically thick conditions, have been observed used using a pulse modulated quantum cascade laser operating at 7.97 ?m. The variation in optical depth was achieved by increasing the pressure of nitrous oxide in a long path length ...

We demonstrate targeted perturbation of neuronal activity with controlled release of neurochemicals from conducting polymer-coated microelectrodes. Polymer coating and chemical incorporation are achieved through individually addressable electrodeposition, a process that does not compromise the recording capabilities of the electrodes. Release is realized by the application of ...

We demonstrate targeted perturbation of neuronal activity with controlled release of neurochemicals from conducting polymer-coated microelectrodes. Polymer coating and chemical incorporation are achieved through individually addressable electrodeposition, a process that does not compromise the recording capabilities of the electrodes. Release is realized by the application of ...

Hybridization solutions containing chaotropes may be used to modulate the thermal stability (Tm or Td) of oligodeoxynucleotide (ODN) duplexes or hybrids over a 90 degrees C range. Modulation of Td allows formulation of hybridization solutions that permit ambient temperature hybridization using most combinations of probe length, probe composition, target ...

This paper introduces SMART: Sandia National Laboratory`s Modular Architecture for Robotics and Teleoperation. SMART is designed to integrate the different slave devices (e.g., large hydraulic arms, mobile manipulators, gantry robots), sensors (e.g., ultra-sonic sensors,force sensors), and input devices, (e.g., track ball,force-reflecting master, autonomous trajectory generators) required for ...

Optimal performance in two-alternative, free response decision making tasks can be achieved by the drift-diffusion model of decision making - which can be implemented in a neural network - as long as the threshold parameter of that model can be adapted to different task conditions. Evidence exists that people seek to maximize reward in such tasks by ...

The brain continuously adapts its processing machinery to behavioural demands. To achieve this, it rapidly modulates the operating mode of cortical circuits, controlling the way that information is transformed and routed. This article will focus on two experimental approaches by which the control of cortical information processing has ...

This paper reviews hardware and software solutions that allow for rapid prototyping of new or modified UGV sensor designs, mission payloads and functional sub assemblies. We define reconfigurable computing in the context of being able to place various PMC modules depending upon mission scenarios onto a base SBC (Single Board Computer) or multiprocessor ...

High-speed, wide-range wavelength scanning is demonstrated using a laser diode with an antireflection coating and an external cavity employing an acousto-optic deflector. The narrow spectral width of 0.2 nm observed in the experiment indicates the availability of a highly coherent laser beam. The scanning range of 15 nm under rapid modulation is confirmed ...

BackgroundTo compare the RapidArc plan for primary hepatocellular carcinoma (HCC) with 3-D conformal radiotherapy (3DCRT) and intensity-modulated radiotherapy (IMRT) plans using dosimetric analysis.MethodsNine patients with unresectable HCC were enrolled in this study. Dosimetric values for RapidArc, IMRT, and 3DCRT were calculated for ...

The 200 kWe uranium-nitride fueled lithium cooled fast reactor concept RAPID-L to be combined with thermoelectric power conversion system for lunar base power system is demonstrated. Unique challenges in reactivity control systems design have been attempted in RAPID-L concept. The reactor involves the following innovative reactivity control systems: ...

The equine biceps brachii (biceps) initiates rapid limb protraction through a catapult mechanism. Elastic strain energy is slowly stored in an internal tendon and is then rapidly released to protract the forelimb. The muscle fibres are short, have little scope for length change and can therefore only shorten slowly compared with the speed at which the ...

The programming of cellular networks to achieve new biological functions depends on the development of genetic tools that link the presence of a molecular signal to gene-regulatory activity. Recently, a set of engineered RNA controllers was described that enabled predictable tuning of gene expression in the yeast Saccharomyces cerevisiae through directed cleavage of ...

The programming of cellular networks to achieve new biological functions depends on the development of genetic tools that link the presence of a molecular signal to gene-regulatory activity. Recently, a set of engineered RNA controllers was described that enabled predictable tuning of gene expression in the yeast Saccharomyces cerevisiae through directed cleavage of ...

The technology base required to construct fire-ratable modules is explored. New materials of construction and module configurations to achieve increased fire resistance are investigated. The fire-resistance capability of current PV module designs is assessed. Parametric tests are performed to characterize ...

This paper describes the design, assembly, and testing of a concentrating photovoltaic module which uses spectral splitting to achieve high system power efficiency. The assembly and testing of two prototype modules is also described. An efficiency of 37.5% was measured on the highest performing module.

... MG) CDMA systems have been developed and rapidly gained popularity as they capitalize on both MCM (multicarrier modulation)'s resilience to ...

A polarimeter is described, which provides achromatic modulation over the spectral range 0.3 to 1.1

The objective of this thesis is to design and experimentally evaluate novel tunable optical filters and modulators based on surface-stabilized chiral smectic liquid crystal (CSLC) devices. Surface-stabilized CSLC devices are characterized by an electric field induced reorientation of the molecular director in the plane of the bounding substrates. Due to an intrinsic lack of ...

Purpose:? To investigate initial learning curves on a virtual reality (VR) eye surgery simulator and whether achieved skills are transferable between tasks. Methods:? Thirty-five medical students were randomized to complete ten iterations on either the VR Caspulorhexis module (group A) or the Cataract navigation training module (group ...

A transportable GC x GC instrument is under development for on-site applications that would benefit from the enhanced resolution and powers of detection, which can be achieved by this method. In the present study, a low-resource GC x GC instrument using an electrically heated and liquid-cooled single-stage thermal modulator that requires no cryogenic ...

In social species animals should fine-tune the expression of their social behavior to social environments in order to avoid the costs of engaging in costly social interactions. Therefore, social competence, defined as the ability of an animal to optimize the expression of its social behavior as a function of the available social information, should be considered as a performance trait that impacts ...

Introduction:The purpose of this study was to compare conventional fixed-gantry angle intensity-modulated radiation therapy (IMRT) with RapidArc for total dural irradiation. We also hypothesize that target volume-individualized collimator angles may produce substantial normal tissue sparing when planning with RapidArc. Materials and ...

Extinctions of local subpopulations are common events in nature. Here, we ask whether such extinctions can affect the design of biological networks within organisms over evolutionary timescales. We study the impact of extinction events on modularity of biological systems, a common architectural principle found on multiple scales in biology. As a model system, we use networks that evolve toward ...

A novel gas purification technique called rapid pressure swing absorption (RAPSAB) was developed by integrating the best features of membrane contacting, gas-liquid absorption, and pressure swing adsorption (PSA). In this cyclic separation process, a well-packed microporous hydrophobic hollow-fiber module was used to achieve ...

... In the case of the square well, application of relatively large fields are ... In conclusion, triangular well modulators have the potential to achieve high ...

... Pagination or Media Count : 53. ... LM0202P electro-optic modulator to achieve a high percentage modulation at 125MHz of an argon-ion laser. ...

... The high modulation e ciency of optical FM devices is attractive for achieving low noise- gure links, but linear demodulation of the signals is also ...

May 18, 2009 ... Thus, the phase ambiguity associated with BPSK modulation does not need to be resolved until the coding gain is achieved. A convolutional ...

We show the capacity of a generalized pulse-position modulation (PPM) channel, ... permutations, is achieved by a uniform input distribution. ...

A concentrator for a solar cell module, with the capability of achieving significant concentration of incidence flux without resorting to the use of ancillary concentration devices, is described. The concentrator is adapted to employ repeated internal ref...

An amplitude modulator making use of a feedback technique to achieve a linear operation with respect to two imputs was developed and an implementation of the technique making use of the very predictable exponential characteristics of the bipolar transisto...

RapidArc is a novel technique using arc radiotherapy aiming to achieve intensity-modulated radiotherapy (IMRT)-quality radiotherapy plans with shorter treatment time. This study compared the dosimetric quality and treatment efficiency of single-arc (SA) vs. double-arc (DA) and IMRT in the treatment of prostate cancer. Fourteen patients ...

... Descriptors : *Tunable lasers, *Tuning devices, *Patents, Mirrors, Laser cavities, Dye lasers, Diffraction gratings, Frequency modulation. ...

... Descriptors : *ROCK, *EXCAVATION, *HYDRAULIC JETS, WATER FLOW, PULSE MODULATION, JET FLOW, IMPACT TESTS, FEASIBILITY ...

... experiences in the schools, a cooperative culture will ... develop the CGSC school modules fairly rapidly ... Competition has a role in sports or the market ...

... Title : Computer Aided Process Planning (CAPP): The User Interface for the Fabrication Module of the Rapid Design System. ...

Moreover, if the modulation is caused by oscillation modes in the disk or Lense- Thirring precession, then this would also require a rapidly rotating hole. ...

... a fast psuedospectral optimization method, not only are rapid optimal trajectories achievable, but through successive trajectory generations as a ...

Oct 3, 2003 ... Resonance. Acoustic oscillations within resonant cavities can cause a rapid gas temperature rise. The rise is more rapid and achieves higher ...

exsolve rapidly, they could produce a high overpressure; see figure 10-12 of Yoder (6). This could be achieved by cooling the magma rapidly. derlies a cooler ...

... In the area of cyber technology, Lieutenant Colonel Mark Mattison ... Achieving Decision Making Superiority: USAF Cyber Weapons School,� the rapid ...

Many solar-like stars rotate more rapidly than the sun. Through their magnetized winds, these stars gradually lose angular momentum and spin down. By similar processes, our Sun must have rotated more rapidly in the past than it currently does. We explore the effects of more rapid rotation upon turbulent stellar convection, studying ...

... Singapore has taken bold steps in implementing ambitious developement policies and has achieved remarkable economic growth and social ...

... force is being designed to achieve rapid and decisive ... of Force XXI, can achieve fires dominance on ... To answer this question, this monograph first ...

Many imaging techniques require highly sensitive optical systems including detectors capable of measuring extremely small fluctuations in the detected incident light. Such systems use a modulated light source (at frequencies up to 100's of kHz) in combination with optics that induce a change in the amplitude and/or phase of the modulation in response to ...

We describe the development of a rapid, noncontact imaging method, modulated imaging (MI), for quantitative, wide-field characterization of optical absorption and scattering properties of turbid media. MI utilizes principles of frequency-domain sampling and model-based analysis of the spatial modulation transfer function (s-MTF). We ...

Lockheed Martin and Intelligent Machine Technology are working to build a demonstration system for the Department of Justice and the Air Force Research Laboratory that can be extended to take advantage of rapidly moving semiconductor improvements. Our current radiometer modules use a PIN switch for the Dicke calibration function followed by multiple low ...

Since antibiotic resistance usually affords a gain of function, there is an associated biological cost resulting in a loss of fitness of the bacterial host. Considering that antibiotic resistance is most often only transiently advantageous to bacteria, an efficient and elegant way for them to escape the lethal action of drugs is the alteration of resistance gene expression. It appears that ...

We propose and demonstrate an improved heterodyne coherent anti-Stokes Raman scattering (CARS) measurement with a rapid phase modulation and temporal displacement of the background, to simplify signal extraction and effectively reduce a nonresonant background (NRB). This method is a modification of the single-beam CARS spectroscopy originally proposed by ...

Skyline Solar Inc. has developed a novel silicon-based PV system to simultaneously reduce energy cost and improve scalability of solar energy. The system achieves high gain through a combination of high capacity factor and optical concentration. The design approach drives innovation not only into the details of the system hardware, but also into manufacturing and ...

A plasma arc melter is a modular high-intensity skull melter capable of rapidly melting a wide variety of materials, both conductive and nonconductive. Although its commercial use to melt and process metals is well known, the method is less well known as a method of melting glass. Extensive research has been conducted by several organizations into the use of skull melting of ...

Report covers the results of the Engineer Design Test for the Rapid Combat Mapping System (RACOMS) Operations Module. This module is a critical component of the RACOMS since it serves as the command control center for the entire system. Report concludes: ...

Report covers the results of the Engineer Design Test for the Rapid Combat Mapping System (RACOMS) Image Processing Module I. This module is utilized to produce glass diapositives as well as Mylar and paper photographic prints from aerial photography to s...

This citation summarizes a one-page announcement of technology available for utilization. The operation of an inertia balance is simplified by packaging a set of balance springs in interchangeable modules. Since models of different weights require crossha...

The experimental efforts reported in this thesis concentrate on two modulation techniques. Rapid mechanical movement of the Mossbauer source was used to modulate the phase of gamma radiation. The distance between the Mossbauer source and a resonant absorb...

The purpose of this investigation is to study and develop non-destructive, simple, and rapid methods for measuring the structural and dynamic properties of ferroelectric ceramics. Optical modulation techniques, particularly electric field modulated transm...

The report describes research performed by Boeing Aerospace and Electronics under the Photovoltaic Manufacturing Technology project. We anticipate that implementing advanced semiconductor device fabrication techniques to the production of large-area CuIn{sub 1-x}Ga{sub x}Se{sub 2} (CIGS)/Cd{sub 1-y}Zn{sub y}S/ZnO monolithically integrated thin-film solar cell modules will ...

The report describes research performed by Boeing Aerospace and Electronics under the Photovoltaic Manufacturing Technology project. We anticipate that implementing advanced semiconductor device fabrication techniques to the production of large area CuIn(1-x)Ga(x)Se2 (CIGS)/Cd(1-y)Zn(y)S/ZnO monolithically integrated thin film solar cell modules will enable 15 pct. median ...

The report describes research performed by Boeing Aerospace and Electronics under the Photovoltaic Manufacturing Technology project. We anticipate that implementing advanced semiconductor device fabrication techniques to the production of large-area CuIn{sub 1-x}Ga{sub x}Se{sub 2} (CIGS)/Cd{sub 1-y}Zn{sub y}S/ZnO monolithically integrated thin-film solar cell modules will ...

Multichip module (MCM) technology addresses the large gap that exists between the speed and circuit densities achieved in monolithic integrated circuits versus those achieved at the board and subsystem level using conventional through-hole and surface mou...

We define what we mean by a 30-year module life and the testing protocol that we believe is involved in achieving such a prediction. However, we do not believe that a universal test (or series of tests) will allow for such a prediction to be made.

This report describes the main research achievements during the time period cited above on the research project in the area of telecommunications. The main achievements include the systematic study of modulated codes that are convolutional codes defined o...

... 8. PERFORMING ORGANIZATION REPORT NUMBER ... High assembly yields (> 90%) can be achieved ... Bond wire reliability not an issue; Missed ...

... experimental results show that superconducting stripline modulation leading to phase velocity reduction and subsequent phase shift is achievable ...

... It was found that at low sampling rates and for a second order Gaussian Markoff process, sampling rate reductions of 38% could be achieved ...

... mechanical analysis of a nonlinear interferometer that achieves optical switching via cross-phase modulation resulting from the Kerr effect. ...

... chip technology, where the device is flipped ... use of MCMs in radiation-hardened systems is ... achieved with bipolar or CMOS devices were relatively ...

... module, a number of scientific achievements in understanding cancer are ... lecture, Chaos to Cure: Bringing Basic Research to Patients, the focus is ... ...

... A variable bit width delta modulator (VBWDM) demodulator was designed, built and tested to achieve voice and music communication using a ...

... for Achieving Software Test Acceptance. ... and frequent software testing, as well ... Descriptors : *ACCEPTANCE TESTS, *SOFTWARE ENGINEERING ...

employ many elegant strategies to achieve mechanical properties required for survival under harsh and rapidly changing environmental conditions. Thus these remarkable...

... recognizes that the Cold War has ended, no one has ... at first that even with the successful ending of the ... doctrine and strategy to reflect the end of the ...

... to achieve slewing maneuvers for rapid retargeting and precision alignment of structural components supporting optical system components. ...

... THE TM(012) MODE. HIGH HEATING RATES AT LOW POWER LEVELS WERE ACHIEVED. RAPID HEATING AND COOLING ...

... was observed that consolidation is achieved by interparticle melting occurring during the process; the interior of the particles in Ti-17 alloy exhibited ...

... the constant monitoring of engineerirg effort to assure rapid and prompt achievement of all scheduled tasks. In addition ...

... Through education, Marines will be able to employ cultural mapping and rapid ethnography to win the population as key terrain and achieve better ...

... Through education, Marines will be able to employ cultural mapping and rapid ethnography to win the population as key terrain and achieve better ...

A versatile computer program is presented which achieves a rapid, numerical solution of the Reynolds

... The achievement of steady-state processing conditions depends on the initial powder size distribution, the amount of surfactant added and the ...

The principle of phase modulation is described and methods of design which enable speed-changing of induction motors to be achieved using six-lead changeover switching are developed. Comparison with the method of pole amplitude modulation (PAM) shows that...

Techniques for developing wideband optical modulators of KDP (potassium dihydrogen phosphate) were studied theoretically and experimentally. Forty-five degree, z-cut KDP modulators were built that required as little as 200 volts to achieve 100 percent opt...

Solar Kinetics, Inc., has been developing a point-focus concentrating photovoltaic module and tracker system under contract to Sandia National Laboratories. The primary focus of the contract was to achieve a module design that was manufacturable and passe...

Significant progress is continuing in the development of photovoltaic (PV) concentrator technology. New record cell and module efficiencies have been achieved, and improvements in cells, cell assemblies, and modules are increasing reliability and decreasi...

The Advanced Photon Source (APS) linac requires five 100-MW modulators to achieve its required energy. In-house construction of these modulators was under an extremely compressed time schedule and, while the original design was successful, it had a few sh...

This work is a theoretical study of microwave photonic links which use optical frequency modulation (FM) and filter-slope discrimination for demodulation. The high modulation efficiency of optical FM devices is attractive for achieving low noise-figure li...

The overall goal of the project was to develop methodology for the fabrication of a fluted spiral module, produce a prototype module and test its performance. This goal was to be achieved in several stages as follows: Formation of Fluted Membrane Leaf--A ...

A concatenated coded modulation scheme for error control in data communications is presented. The scheme is achieved by concatenating a Reed-Solomon outer code and a bandwidth efficient block inner code for M-ary PSK modulation. Error performance of the s...

A concatenated coded modulation scheme for error control in data communications is described. The scheme is achieved by concatenating a Reed-Solomon outer code and a bandwidth efficient block inner code for M-ary PSK modulation. Error performance of the s...

Purpose: To evaluate volumetric modulated arc radiotherapy (RapidArc [RA]), a novel approach allowing for rapid treatment delivery, for the treatment of vestibular schwannoma (VS). Methods and Materials: The RA plans were generated for a small (0.5 cm{sup 3}), intermediate (2.8 cm{sup 3}), and large (14.8 cm{sup 3}) VS. The ...

UNCORRECTED PROOF Rapid and efficient microwave-assisted synthesis of highly sulfated organic reaction times. We have developed a rapid microwave-based method for synthesis of highly sulfated small in achieving rapid per-sulfation. Table 1. Optimization of microwave-assisted sulfation

A promising method achieving rapid convergence for image reconstruction is introduced for the continuous-wave NIR-DOT. An approach employs a constraint based on Lorentzian distributed function incorporated into Tikhonov regularization, thereby rapidly converging a stable solution.

This study examines the concept of Rapid Decisive Operations (RDO) and seeks to answer the question of whether or not Rapid Decisive Operations is an achievable concept for the establishment of future Joint Warfighting Doctrine. This study starts with a d...

Rapidly improving technology is transitioning current laboratory images into reality with fielded systems expected within two years. W-band radiometers have been shown to be effective in detecting metallic and nonmetallic weapons concealed under heavy garments in both outdoor and indoor situations. Systems that are in development will provide real-time display and weapon ...

Plasticity is an intrinsic property of the human brain and represents evolution's invention to enable the nervous system to escape the restrictions of its own genome and thus adapt to environmental pressures, physiologic changes, and experiences. Dynamic shifts in the strength of preexisting connections across distributed neural networks, changes in task-related cortico-cortical and ...

Autonomous decision making modules in computer vision application allow recognition and classification of different objects, persons, and events in images and video sequences and also make it possible to classify different sensor readings (e.g. images) according to their scientific saliencies. In this paper, we propose a new approach to create the training set for these ...

A fast, ultrafine-tunable delay line at 1550 nm is demonstrated by use of acousto-optic pulse shaping. Delays of up to 30 ps can be achieved without any optical readjustment. The delay is linear to the rf center frequency applied to the acousto-optic modulator and is fully electronic. It takes only 3micros to switch between different time slots, ...

Speed and temporal resolution are critical for tomographic imaging of objects in rapid motion. Current x-ray scanners record images sequentially in the time domain. The serial approach limits their performance and demands increasingly high x-ray peak power and gantry speed. We have developed a multipixel carbon nanotube based field emission x-ray source that produces spatially ...

Quantum cascade lasers have ushered in a new era of enhanced capability for chemical sensing. The higher current and voltage demands of these devices over their laser diode counterparts have also ushered in the demand for more capable drive electronics. The current-sensitivity and high frequency response of these devices have continued the desire for low noise, stability, and agility enjoyed by ...

The p21 Rho-family of small GTPases are master regulators of actin cytoskeleton rearrangements. Their functions have been well characterized in terms of their effects toward various actin-modulating protein targets. However, more recent studies have shown that the dynamics of Rho GTPase activities are highly complex and tightly regulated in order to ...

Solid-state lighting and display technology are under rapid development. Photometric measurement devices such as imaging systems or tristimulus sensors encounter complex spatial, spectral and temporal conditions. Sufficiently large uniform calibration sources are required to adequately match the field application and to facilitate acceptable calibration uncertainties. We ...

Selective enhancement (>10(3)) of harmonics extending to the water window (approximately 4 nm) generated in an argon gas filled straight bore capillary waveguide is demonstrated. This enhancement is in good agreement with modeling which indicates that multimode quasi-phase-matching is achieved by rapid axial intensity modulations ...

Beamforming Technology will be an essential element in tactical battlefield communication systems of the next generation. Only with beamforming will the demands of communication quality, network access and covertness be jointly achieved. This paper focuses on the signal processing features of one element of this technology-transmitter beamforming. A flexible beamforming ...

We consider a two-dimensional model of a vapor bubble between two horizontal parallel boundaries held at different temperatures. When the temperatures are constant, a steady state can be achieved such that evaporation near the contact lines at the hot bottom plate is balanced by condensation in colder areas of the interface near the top. The dynamic response of the bubble is ...

AIMS: Volumetric-modulated arc therapy (VMAT) allows rapid delivery of radiotherapy. The aim of this planning study was to evaluate VMAT and dynamic intensity-modulated radiotherapy (IMRT) using a simultaneous integrated boost technique PATIENTS AND METHODS: Planning computed tomography data from 10 patients with locoregionally ...

The realization of a compact green-emitting solid state laser source for applications like laser TV or head-up displays is still a challenging task. One way to generate green light with a solid state laser source is nonlinear frequency upconversion (frequency-doubling) of e.g. 1064 nm to 532 nm. In order to achieve good conversion efficiencies tunable laser sources with output ...

Recent effort at Solarex has been directed toward moving the conversion efficiency of CIGS based modules closer to that demonstrated for small area cells of the same material. Analysis of module structures indicates that much of the gap between device and module performance is due to the difficulty in achieving ...

This thesis describes a novel hybrid approach for the multipoint inverse design of airfoils for complex aerodynamic systems. In this approach, an inverse design method for single-element airfoils is coupled with an analysis module for the complex system. The airfoils that comprise the complex system are generated in isolation using the single-element airfoil inverse design ...

RapidArc radiotherapy technology from Varian Medical Systems is one of the most complex delivery systems currently available, and achieves an entire intensity-modulated radiation therapy (IMRT) treatment in a single gantry rotation about the patient. Three dynamic parameters can be continuously varied to create IMRT dose ...

RapidArc radiotherapy technology from Varian Medical Systems is one of the most complex delivery systems currently available, and achieves an entire intensity-modulated radiation therapy (IMRT) treatment in a single gantry rotation about the patient. Three dynamic parameters can be continuously varied to create IMRT dose ...

The overall objective of this research under the Turbines Program is the deployment of fuel flexible rich catalytic combustion technology into high-pressure ratio industrial gas turbines. The resulting combustion systems will provide fuel flexibility for gas turbines to burn coal derived synthesis gas or natural gas and achieve NO{sub x} emissions of 2 ppmvd or less (at 15 ...

In this paper we propose a topology for continuous time ? ? modulators. Unlike the modulators presented until now, they exhibit no peaking in their signal transfer function. Instead it achieves a �flat � STF with the desired anti-aliasing properties and with small internal nodes signal levels. Now, a simple filter, e.g. a ...

The invention is a pervaporation process and pervaporation equipment, using a series of membrane modules, and including inter-module reheating of the feed solution under treatment. The inter-module heating is achieved within the tube or vessel in which the modules are housed, thereby avoiding ...

BackgroundTo compare volumetric-modulated arc therapy (RapidArc) plans with conventional intensity-modulated radiation therapy (IMRT) plans in anal canal cancers.MethodsTen patients with anal canal carcinoma previously treated with IMRT in our institution were selected for this study. For each patient, three plans were generated with ...

This paper describes studies of the threshold modulation curve for photographic film. The threshold modulation curve is an empirically derived relation showing the need at any spatial frequency for modulation in the aerial image of a tribar for resolution to be achieved. The paper deals with the history, raison ...

The Polycrystalline Thin Film Solar Cells Program, part of the United States National Photovoltaic Program, performs R D on copper indium diselenide and cadmium telluride thin films. The objective of the Program is to support research to develop cells and modules that meet the US Department of Energy's long-term goals by achieving high ...

We describe theoretical and experimental investigations on the spectral and temporal control of an actively mode-locked erbium-doped fiber laser equipped with a highly dispersive cavity. The laser design is based on a unidirectional ring cavity in which a pair of diffraction gratings is inserted. A direct outcome of the dispersion due to the diffraction gratings resides in the fact that the ...

In approaching the problem of rapid simultaneous multielement analysis, the large light gathering power, wide spectral range and high resolution of a Fourier Transform Spectrometer (FTS) should be of benefit. The severe mechanical tolerances required in the construction and operation of a classical Michelson interferometer for use in the UV-Visible spectral region have limited ...

Based on the SinoMOS 1 ?m 40 V CMOS process, a novel power factor contention (PFC) converter with a low-power variable frequency function is presented. The circuit introduces a multi-vector error amplifier and a programmable oscillator to achieve frequency modulation, which provides a rapid dynamic response and precise output voltage ...

The stability of solar cells is a key factor in determining the reliability of photovoltaic modules and is of great interest in the case of solar cells having a new technology which has not yet been fully developed. In particular this question arises with hydrogenated amorphous silicon (a-Si) solar cells because a-Si exhibits reversible light induced changes in its electronic ...

The automotive industry is distinguished by regionalization and customization of products. As consequence, the diversity of products will increase while the lot sizes will decrease. Thus, more product types will be handled along the process chain and common production paradigms will fail. Although Rapid Manufacturing (RM) methodology will be used for producing small individual ...

The fastest ever 6Gb/s real-time FPGA-based optical orthogonal frequency division multiplexing (OOFDM) transceivers utilizing channel estimation are experimentally demonstrated, for the first time, with variable power loading being incorporated to effectively compensate for the rapid system frequency response roll-off effect. The implemented transceivers are constructed ...

We describe a new, dual-channel Tunable Diode Laser (TDL) field spectrometer for the rapid, simultaneous measurement of two species. The instrument uses two-tone frequency modulation (TTFM) with signal detection at approximately equals 12 MHz. Multiplexing is achieved using a dichroic optical element and a mechanical chopper which ...

Electrochemically modulated separations (EMS) are shown to be a rapid and selective means of extracting and concentrating Pu from complex solutions prior to isotopic analysis by inductively coupled plasma mass spectrometry (ICP�MS). This separation is performed in a flow injection mode, on�line with the ICP�MS. A three�electrode, flow�by ...

The most time consuming process in uranium or plutonium isotopic analyses is performing the requisite chromatographic separation of the actinides. Filament preparation for thermal ionization (TIMS) adds further delays, but is generally accepted due to the unmatched performance in trace isotopic analyses. Advances in Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) are ...

Sphingolipids are membrane lipids that play important roles in the regulation of cell functions and homeostasis. Alterations in their metabolism have been associated with several pathologies. For this reason, therapeutic strategies based on the design of small molecules to restore sphingolipid levels to their physiological condition have rapidly emerged. In addition, some of ...

The automotive industry is distinguished by regionalization and customization of products. As consequence, the diversity of products will increase while the lot sizes will decrease. Thus, more product types will be handled along the process chain and common production paradigms will fail. Although Rapid Manufacturing (RM) methodology will be used for producing small individual ...

We present two new Monte Carlo sources for the DOSXYZnrc code, which can be used to compute dose distributions due to continuously variable beam configurations. These sources support a continuously rotating gantry and collimator, dynamic multileaf collimator (MLC) motion, variable monitor unit (MU) rate, couch rotation and translation in any direction, arbitrary isocentre motion with respect to ...

We demonstrate photovoltaic integrated circuits (PVIC) with high-quality large-grain Copper Indium Gallium Selenide (CIGS) obtained with the unique combination of low-cost ink-based or Physical Vapor Deposition (PVD) based nanoengineered precursor thin films and a reactive transfer printing method. Reactive transfer is a two-stage process relying on chemical reaction between two separate precursor ...

The terahertz frequency vibrational modes of molecular crystals can be used to determine polymorphism in pharmaceuticals and fundamental coupling between intramolecular and intermolecular motions [1]. As the molecular complexity increases, assignment of these modes becomes problematic with inhomogeneous broadening and increasing density of modes. Recently inhomogeneous broadening has been overcome ...

We present two new Monte Carlo sources for the DOSXYZnrc code, which can be used to compute dose distributions due to continuously variable beam configurations. These sources support a continuously rotating gantry and collimator, dynamic multileaf collimator (MLC) motion, variable monitor unit (MU) rate, couch rotation and translation in any direction, arbitrary isocentre motion with respect to ...

Methods that allow for the manipulation of genes or their products have been highly fruitful for biomedical research. Here, we describe a method that allows the control of protein abundance by a genetically encoded regulatory system. We developed a dormant N-degron that can be attached to the N-terminus of a protein of interest. Upon expression of a site-specific protease, the dormant N-degron ...

A simple, sensitive, reliable and rapid HPLC method for the determination of cetirizine hydrochloride using hyoscine butyl bromide as an internal standard has been developed. The chromatographic system consisted of Shimadzu LC-10 AT VP pump, SPD-10 AV VP with UV/visible detector and a CBM-102 Bus Module integrator. Separation was ...

The challenges for the tracking detector systems at the LHC are unprecedented in terms of the number of channels, the required read-out speed and the expected radiation levels. The ATLAS Semiconductor Tracker (SCT) end-caps have a total of about 3 million electronics channels each reading out every 25 ns into its own on-chip 3.3?s buffer. The highest anticipated dose after 10 years operation is ...

In applications where multiple magnetic modulators are used to drive a single Linear Induction Voltage Adder (LIVA) or Linear Accelerator (LINAC), it is essential that the outputs of the modulators by synchronized. Output rise times are typically in the 10ns to 20ns range, often making it necessary to synchronize to within less than 1ns. Microprocessor and ...

In applications where multiple magnetic modulators are used to drive a single Linear Induction Voltage Adder (LIVA) or Linear Accelerator (LINAC), it is essential that the outputs of the modulators be synchronized. Output rise times are typically in the 10 ns to 20 ns range, often making it necessary to synchronize to within less than 1 ns. Microprocessor ...