|| List of recent Gauss-related patents
|Integrated quantum-random noise generator using quantum vacuum states of light|
An integrated quantum random noise source includes a substrate, an optical oscillator that may be integral to the substrate coupled by an optical waveguide to an optical directional coupler. The optical directional coupler has two outputs that are coupled by optical waveguides to a pair of photodetectors that are part of a balanced photodetector.
|Computer-implemented methods and systems for performance tracking|
Computer-implemented methods and systems enable real-time performance comparisons between users and peers by tracking user beliefs, observations, and responses to performance issues. The system operates in a series of cycles, where each user is asked to input outcome information for each cycle.
|Method, apparatus, and program for generating training speech data for target domain|
A method and system for generating training data for a target domain using speech data of a source domain. The training data generation method including: reading out a gaussian mixture model (gmm) of a target domain trained with a clean speech data set of the target domain; mapping, by referring to the gmm of the target domain, a set of source domain speech data received as an input to the set of target domain speech data on a basis of a channel characteristic of the target domain speech data; and adding a noise of the target domain to the mapped set of source domain speech data to output a set of pseudo target domain speech data..
|System and method for selecting an optical path in an optical network|
The invention proposes a system and method for selecting an optimal optical path through which to transmit an optical signal, the optimal optical path is one of a plurality of optical paths in a transparent optical network. Each of the plurality of optical paths includes a plurality of optical elements.
|Method and apparatus for describing image|
A method and apparatus for describing an image are disclosed. The method for describing an image according to an embodiment of the invention includes: transforming an image from a bgr color space into a gaussian derivative color model; and transforming the image from the gaussian derivative color model into an optical reflection invariant color space, wherein the process of transforming the image from the gaussian derivative color model into the optical reflection invariant color space includes: determining, for each pixel on the image, color channels of the pixel corresponding to the optical reflection invariant color space according to a first coefficient and a second coefficient of the pixel in the gaussian derivative color model.
|Motion estimation system utilizing point cloud registration|
A system and method of estimation motion of a machine is disclosed. The method may include determining a first point cloud and a second point cloud corresponding to an environment in a vicinity of the machine.
|Method and apparatus for enhancing color|
Embodiments of the present invention disclose a method and an apparatus for enhancing color, and relate to the image processing field, so as to solve a case of over enhancement on a region having high luminance in an original image which is caused after enhancement processing is performed. A specific solution is: obtaining a luminance component of a currently processed image; performing gaussian filtering processing on the luminance component to obtain an illumination component; obtaining a first reflection component of the currently processed image according to the luminance component and the illumination component; performing enhancement adjustment on the first reflection component to obtain a second reflection component; obtaining a luminance gain according to the luminance component and the second reflection component; and performing enhancement processing on the currently processed image, to obtain a first enhanced image.
|Sub-diffraction limit image resolution and other imaging techniques|
The present invention generally relates to sub-diffraction limit image resolution and other imaging techniques. In one aspect, the invention is directed to determining and/or imaging light from two or more entities separated by a distance less than the diffraction limit of the incident light.
|Method and device for creating a nonparametric, data-based function model|
A method for ascertaining a nonparametric, data-based function model, in particular a gaussian process model, using provided training data, the training data including a number of measuring points which are defined by one or multiple input variables and which each have assigned output values of at least one output variable, including: selecting one or multiple of the measuring points as certain measuring points or adding one or multiple additional measuring points to the training data as certain measuring points; assigning a measuring uncertainty value of essentially zero to the certain measuring points; and ascertaining the nonparametric, data-based function model according to an algorithm which is dependent on the certain measuring points of the modified training data and the measuring uncertainty values assigned in each case.. .
|Method and device for creating a fucntion model for a control unit of an engine system|
A computerized method for creating a function model based on a non-parametric, data-based model, e.g., a gaussian process model, includes: providing training data including measuring points having one or multiple input variables, the measuring points each being assigned an output value of an output variable; providing a basic function; modifying the training data with the aid of difference formation between the function values of the basic function and the output values at the measuring points of the training data; creating the data-based model based on the modified training data; and providing the function model as a function of the data-based model and the basic function.. .
|Physically-based financial analysis and/or forecasting methods, apparatus, and systems|
Methods and apparatus for modeling well production. Such methods comprise modeling a production of a well (perhaps an open universe, generative model).
|Method and control for carrying out a calculation of a data-based function model|
A method for carrying out a calculation of a data-based function model, in particular a gaussian process model, the data-based function model being defined by predefined hyperparameters and node data, multiple input variables being assigned to one output variable and having a sum of terms, each of which depend on one of the input variables, including the following: determining at least one input variable to be varied, for which multiple output values of a corresponding output variable are to be determined; calculating the sum of the terms, which depend on the input variables not to be varied; providing multiple input values for each of the determined at least one input variable to be varied; and ascertaining multiple output values of the output variable for the provided multiple input values, each based on the calculated sum of the terms, which depend on the input variables not to be varied.. .
|System and method for video summarization and navigation based on statistical models|
The disclosed method calculates video time density functions based on inter-frame mutual information or other similarity measures. The method includes acquiring a video sequence from memory, computing mutual information or other similarity measures between two consecutive frames of the video sequence, and constructing a video temporal density function based on the mutual information or similarity measures.
|Stage apparatus, drawing apparatus, and method of manufacturing article|
A stage apparatus includes: a stage; a linear motor configured to drive the stage; a magnetic shield unit configured to surround the linear motor to shield a magnetic field generated by a magnet of the linear motor; and a degaussing coil located in a space surrounded by the magnetic shield unit and configured to degauss the magnetic shield unit.. .
The present invention relates to methods for detecting for the presence of an agent that putatively causes or potentiates dna damage comprising subjecting a cell (containing a dna sequence encoding gaussia luciferase (gluc) reporter protein operatively linked to a human gadd45α gene promoter and a human gadd45α gene regulatory element arranged to activate expression of the dna sequence in response to dna damage) to an agent; and monitoring the expression of the gluc reporter protein from the cell. The invention also concerns expression cassettes, vectors and cells which may be used according to such a method and also modified media that may be employed in assays and in preferred embodiments of the method of the invention..
|Panchromatic sharpening method of spectral image based on fusion of overall structural information and spatial detail information|
The present invention provides a panchromatic sharpening method of spectral image based on fusion of overall structural information and spatial detail information, comprising: performing brightness linear stretching on a panchromatic image, so as to set the variance of the panchromatic image to be equal to the variance of said spectral image; respectively interpolating n components of the spectral image so as to generate an interpolation image series having the same resolution as that of the panchromatic image; subtracting the interpolation image series from the panchromatic image after said linear stretching to obtain difference images; performing gauss filtering on the difference images, thereby obtaining difference tendency images; and, respectively subtracting the difference tendency image series from the panchromatic image after said linear stretching, thus obtaining fused images. The method can maintain both spectral fidelity and texture detail fidelity of the fused images, support high computation speed, and has wide applicability..
|Production analysis and/or forecasting methods, apparatus, and systems|
Methods and apparatus for modeling well production. Such methods comprise modeling a production of a well (perhaps an open universe, generative model).
|Fixing device and image forming apparatus|
A fixing device includes an exciting coil and a heat generator disposed opposite the exciting coil. The heat generator includes a heat generation layer disposed opposite the exciting coil to generate heat by a magnetic flux from the exciting coil and a temperature sensitive magnetic body disposed opposite the exciting coil via the heat generation layer to obtain and lose magnetism at a temperature defined by a curie temperature by composition adjustment to selectively create a heating region and a non-heating region of the heat generation layer.
|Method and system for inverse halftoning utilizing inverse projection of predicted errors|
A method and system generates a reconstructed gray scale image of pixels from a binary image of pixels by reverse propagating an error, in a diffused manner, to the pixels of the binary image to create pixels representing a reconstructed gray scale image. The reverse propagation of the error determines if a current pixel has a first predetermined value; sets an error value to a first error value if the current pixel has the first predetermined value; sets the error value to a second error value if the current pixel does not have the first predetermined value; and propagates a diffused error value to a pixel neighboring the current pixel to create an error diffused pixel, the diffused error value being a product of the set error value and a weighting coefficient associated with the pixel neighboring the current pixel.
|Simulated loading method and apparatus for moving load of whole train in rail transportation|
The present invention discloses a simulated loading method and an apparatus for moving load of a whole train in rail transportation. Multiple actuators are arranged above rail sleepers along rail direction.
|Differentially private linear queries on histograms|
The privacy of linear queries on histograms is protected. A database containing private data is queried.
|Data analysis in a network|
An example method for analyzing data in a collaborative network in accordance with the present disclosure is receiving a plurality of data, constructing a dependency structure between the plurality of data by running an expanding window gaussian graphical model on the plurality of data, decomposing the dependency structure, and providing a visualization of the decomposition of the dependency structure.. .
|Iterative kalman filtering|
Several types of noise limit the performance of remote sensing systems, e.g., systems that determine the location, color, or shape of remote objects. When noise detected by sensors of the remote sensing systems is known and well estimated, a kalman filter can converge on an accurate value without noise.
|Calculation method for molecular volume and comparison method for shapes of two molecules|
The invention relates to a calculating method for molecular volume and shape comparison of two molecules. The method includes steps of loading in three-dimensional structure information of a first molecule, the three-dimensional structure information comprising type and coordinate values of each atom contained in the first molecule; obtaining respective van der waals radius based on the type of respective atom contained in the first molecule, converting the three-dimensional structure information into a group of gaussian spheres representing atoms in the first molecule; calculating overlap volume for each pair of gaussian spheres; calculating the weight of each gaussian sphere; calculating self-overlap volume of the first molecule, the self-overlap volume being used as a volume of the first molecule.
|Method and apparatus for monitoring a charged particle beam|
An ionization chamber with spatial distribution electrode for monitor hadron beam currents used for therapeutic treatment. Ionization chamber comprises humidity control, environmental sensing and real-time correction thereof.
|Beam shaping optics of flow cytometer systems and methods related thereto|
In some aspects, a flow cytometer system is provided that includes beam shaping optics positioned to manipulate a light beam and produce a resulting light beam that irradiates the core stream at the interrogation zone of the flow cell. The beam shaping optics include an acylindrical lens positioned to receive and focus light in a direction of a first axis orthogonal to a direction of light travel, and a cylindrical lens positioned to receive the light output from the acylindrical lens and to focus the light output from the acylindrical lens in a direction of a second axis orthogonal to the first axis and to the direction of light travel.
|Posterior-based feature with partial distance elimination for speech recognition|
A high-dimensional posterior-based feature with partial distance elimination may be utilized for speech recognition. The log likelihood values of a large number of gaussians are needed to generate the high-dimensional posterior feature.
|Device and method for creating gaussian aberration-corrected electron beams|
Electron beam phase gratings have phase profiles that produce a diffracted beam having a gaussian or other selected intensity profile. Phase profiles can also be selected to correct or compensate electron lens aberrations.
A real-time calibration system and method for a mobile device having an onboard magnetometer uses an estimator to estimate magnetometer calibration parameters and a magnetic field external to the mobile device (e.g., the earth magnetic field). The calibration parameters can be used to calibrate uncalibrated magnetometer readings output from the onboard magnetometer.
|Fading simulator and fading simulation method|
A fading simulator is provided, which includes a noise generator that generates an additive white gaussian noise signal, receives a test signal to be input to a mobile communication terminal as a test target, and adds, to the test signal, a radio wave scattering effect, using the additive white gaussian noise signal. The fading simulator is provided with setting means for setting for causing the noise generator to generate a same additive white gaussian noise signal as the additive white gaussian noise signal in the first test, when a first test is performed on the mobile communication terminal, and also for setting for causing the noise generator to generate the additive white gaussian noise signal of the predetermined level when a second test for re-simulating the first test is performed after the first test..
|Storage device having degauss circuitry configured for generating degauss signal with asymmetric decay envelopes|
A hard disk drive or other storage device comprises a storage medium, a write head configured to write data to the storage medium, and control circuitry coupled to the write head. The control circuitry comprises degauss circuitry coupled to or otherwise associated with one or more write drivers.
|Systems/methods of encryption|
Encryption is provided via an algorithm that maps a block of n input bits onto a block of m output bits, wherein m≧n. Encryption also may be provided in accordance with bit/bandwidth expansion, wherein m>n.
|Speaker recognition method through emotional model synthesis based on neighbors preserving principle|
A speaker recognition method through emotional model synthesis based on neighbors preserving principle is enclosed. The methods includes the following steps: (1) training the reference speaker's and user's speech models; (2) extracting the neutral-to-emotion transformation/mapping sets of gmm reference models; (3) extracting the emotion reference gaussian components mapped by or corresponding to several gaussian neutral reference gaussian components close to the user's neutral training gaussian component; (4) synthesizing the user's emotion training gaussian component and then synthesizing the user's emotion training model; (5) synthesizing all user's gmm training models; (6) inputting test speech and conducting the identification.
|Machine-based patient-specific seizure classification system|
This disclosure is directed to a machine-based patient-specific seizure classification system. In general, an example system may comprise a non-linear svm seizure classification system-on-chip (soc) with multichannel eeg data acquisition and storage for epileptic patients is presented.
|Systems and methods for portative magneto therapy|
In accordance with one embodiment, a system for applying magnetic fields to one or more objects is provided. The system may include a one or more neodymium disc magnets for providing magnetic fields.
|Magnetic block toy|
A magnetic block toy, more specifically, a magnetic block toy which secures mating spots of magnets at the planes of blocks to be combined by extending a travel segment of a magnet to the plane of a block with increased magnetic gauss level by exposing part of a casing that covers outer surface of the magnet, and provides audible effects during play. For this purpose, the present disclosure incorporates a partially exposed cylindrical magnet with a longitudinal open groove in the casing and a guide pin formed at both right and left sides of the casing.
|Method and system for matching an image using image patches|
A method, system and computer program product for encoding an image is provided. The image that needs to be represented is represented in the form of a gaussian pyramid which is a scale-space representation of the image and includes several pyramid images.
|Touch sensing device and method of identifying a touched position|
In a touch sensing device of a capacitive type, touch coordinates are obtained according to a detected signal corresponding to a variation in a mutual capacitance between an x-electrode and a y-electrode due to a finger touch in each combination of a plurality of x-electrodes and a plurality of y-electrodes within a sensing area. The theoretical value of the detected signal in each combination of the x-electrodes an the y-electrodes approximately expressed by a two-dimensional gaussian function.
|Imaging apparatus, ultrasonic imaging apparatus, method of processing an image, and method of processing an ultrasonic image|
A method of processing an image, including estimating a point spread function (psf) of an acquired image, and performing image restoration on the acquired image using the estimated psf based on a generalized gaussian model using inverse filter frequency domain so as to perform image restoration at high speed and to prevent a halo effect. The method provides high speed processing while preventing a halo effect.
|Magnetic device with high saturation current and low core loss|
A magnetic device includes a t-shaped magnetic core, a wire coil and a magnetic body. The t-shaped magnetic core includes a base and a pillar, and is made of an annealed soft magnetic metal material, a core loss pcl (mw/cm3) of the t-shaped magnetic core satisfying: 0.64×f0.95×bm2.20≦pcl≦7.26×f1.41×bm1.08, where f (khz) represents a frequency of a magnetic field applied to the t-shaped magnetic core, and bm (kgauss) represents the operating magnetic flux density of the magnetic field at the frequency.
|Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts|
Embodiments relate to polycrystalline diamond compacts (“pdcs”) that are less susceptible to liquid metal embrittlement damage due to the use of at least one transition layer between a polycrystalline diamond (“pcd”) layer and a substrate. In an embodiment, a pdc includes a pcd layer, a cemented carbide substrate, and at least one transition layer bonded to the substrate and the pcd layer.
|Feature space transformation for personalization using generalized i-vector clustering|
Personalization for automatic speech recognition (asr) is associated with a particular device. A generalized i-vector clustering method is used to train i-vector parameters on utterances received from a device and to classify test utterances from the same device.
|Optical individual-point measurement|
A distance measuring method for a point on an object is performed by emitting measurement radiation. When an optical measurement axis of the measurement radiation is aligned with the point to be measured, an optical measurement point region is defined by the beam cross section of the radiation on the object.
|Skew elimination and control in a plasma enhanced substrate processing chamber|
Methods and apparatus for plasma-enhanced substrate processing are provided herein. In some embodiments, an apparatus for processing a substrate includes: a process chamber having an internal processing volume disposed beneath a dielectric lid of the process chamber; a substrate support disposed in the process chamber; one or more inductive coils disposed above the dielectric lid to inductively couple rf energy into the processing volume above the substrate support; and one or more first electromagnets to form a first static magnetic field that is substantially vertical in direction and axisymmetric about a central processing axis of the process chamber, and having a magnitude of about 2 to about 10 gauss within the processing volume proximate the lid..
|Soft demapper, calculating system, and method for calibrating soft data of multimedia data stream|
By determining a scaling factor for scaling signals according to a signal having low bit error rates, and by adjusting soft data using the scaling factor, when soft data are simulated using the gaussian model having obvious errors with respect to reality, impacts of signals having low bit error rates are effectively amplified so that impacts of signals having high bit error rates are effectively reduced on the contrary. As a result, the obvious errors introduced by using the gaussian model and a low broadcast quality of digital television signals caused by said obvious errors can be neutralized..
|Method for operating a uwb device|
The method for operating a uwb device having at least one transmitting antenna and/or at least one receiving antenna comprises the following steps: controlling the transmitting antenna (12) or the receiving antenna (12′) with a control pulse signal (13,13′) having a sequence of substantially sinusoidal pulses of alternating polarity and differing amplitudes and particularly having the waveform of a fifth-order gaussian pulse signal, wherein the transmitting antenna (12) can be alternately supplied with current pulses of differing polarity and differing magnitude by switching on and off first electronic switch units (16) that are coupled to the transmitting antenna (12) and have resistances associated with the amplitudes of the pulses to be generated, wherein each first switch unit (16) has a specifiable, particularly equal, number of first switching transistors (18,19), each having substantially identical on-state resistance values (r), wherein the resistance of a first switch unit is adjusted either by using only one of the first switching transistors (18,19) or by using a plurality of first switching transistors (18,19) connected in parallel, and wherein the first switch units (16) are controlled sequentially according to a specifiable temporal schema and each for a control time interval of a predetermined length.. .
|Methods, systems, and circuits for speaker dependent voice recognition with a single lexicon|
Embodiments reduce the complexity of speaker dependent speech recognition systems and methods by representing the code word (i.e., the word to be recognized) using a single gaussian mixture model (gmm) which is adapted from a universal background model (ubm). Only the parameters of the gmm need to be stored.
|Novel criteria for gaussian mixture model cluster selection in scalable compressed fisher vector (scfv) global descriptor|
A wireless communication device includes a processor configured to execute an image query. The image query utilizes cluster selection criteria for a cluster-aggregation based vectorization of a set of local features based on a quantity of top local features having the highest posteriori probability values.
|Wave energy extraction device and method|
A wave energy extraction device (or paddle) for converting wave energy into mechanical motion is curved in the horizontal plane, with a concave side (11) facing the incoming waves to increase energy capture and a convex side (12) on the lee side to reduce energy dissipation. The concave surface is substantially parabolic or semi-elliptical and the convex side is optionally provided with a substantially gaussian profile (4) to improve the hydrodynamics and provide additional strength.
|Portable therapeutic device using rotating static magnetic fields|
The present invention provides a portable therapeutic device for treatment of dyslipidemia, hyperviscosaemia, diabetic neuropathy, and peripheral artery disease, using rotating static magnetic fields (rsmf). The device comprises a two part plastic housing with a handle and a designated treatment area, a dc motor with microcontroller and a cylindrically shaped magnet roller, which comprises magnets tightly fitted into a stainless steel sleeve capped with two bearing shafts protruded on each end.
|Techniques for forming 3d structures|
A technique for forming 3d semiconductor structure is disclosed. In one embodiment, a substrate having at least two vertically extending fins is provided.
|Method and apparatus for optical waveguide-to-semiconductor coupling and optical vias for monolithically integrated electronic and photonic circuits|
An optical coupler has a waveguide coupled to a grating of multiple scattering units, each scattering unit having a first scattering element formed of a shape in a polysilicon gate layer and a second scattering element formed of a shape in a body silicon layer of a metal-oxide-semiconductor (mos) integrated circuit (ic). The couplers may be used in a system having a coupler on each of a first and second ic, infrared light being formed into a beam passing between the couplers.
|Three-dimensional point processing and model generation|
A method for three-dimensional point processing and model generation includes applying a primitive extraction to the data in a point cloud to associate primitive shapes with points within the point cloud, the primitive extraction including, estimating normal vectors for the point cloud, projecting the estimated normal vectors onto a gaussian sphere, detecting and eliminating point-clusters corresponding to planar areas of the point cloud to obtain a residual gaussian sphere, detecting great-circle patterns on the residual gaussian sphere to produce a segmented point cloud, projecting each segment of the segmented point cloud onto respective planes to produce respective two-dimensional point clouds, detecting circle patterns in each two-dimensional point cloud, and processing the circle patterns to determine cylinder parameters for each of a plurality of candidate cylinders, and assembling the candidate cylinders into a three-dimensional surface model of the scene.. .
|Flexible architecture for acoustic signal processing engine|
A disclosed speech processor includes a front end to receive a speech input and generate a feature vector indicative of a portion of the speech input and a gaussian mixture (gmm) circuit to receive the feature vector, model any one of a plurality of gmm speech recognition algorithms, and generate a gmm score for the feature vector based on the gmm speech recognition algorithm modeled. In at least one embodiment, the gmm circuit includes a common compute block to generate feature a vector sum indicative of a weighted sum of differences squares between the feature vector and a mixture component of the gmm speech recognition algorithm.
|Method and device for channel estimation|
The disclosure provides a method for channel estimation, including that: a small-scale fading channel of each carrier of each interfering channel is obtained respectively according to a gaussian distribution; a total interfering power pi of all interfering srss is calculated according to the obtained small-scale fading channel of each carrier of each interfering channel and a generated large-scale fading gain of each carrier of each interfering channel; interference-equivalent noise ni is calculated according to the total interfering power pi; and channel estimation is performed according to a sounding reference signal (srs) y received by an evolved node b (enb), wherein y is calculated with a formula y=sh+ni+n0. The disclosure further provides a device for channel estimation.
|Determining quality of an image or video using a distortion classifier|
Techniques and structures are disclosed in which one or more distortion categories are identified for an image or video, and a quality of the image or video is determined based on the one or more distortion categories. The image or video may be of a natural scene, and may be of unknown provenance.
|Image processing apparatus and image processing method|
An input image is divided into images composed of luminance signals of a plurality of bands that make up the laplacian pyramid, noise suppression is applied to each divided image, and then the divided images are composited by addition. The input image is also divided into images composed of color signals of a plurality of bands that make up the gaussian pyramid, noise suppression is applied to each divided image, and the divided images are composited at an image-based ratio.
|Image processing method and apparatus for correcting an image|
The present disclosure relates to method and apparatus for image recovery and image correction. In an embodiment, the present disclosure relates to recovering images that are occluded due to some material in the optical path while capturing the images.
|Techniques for wavelet-based image disparity estimation|
Various embodiments are generally directed to repeated use of wavelet filters with different directional orientations each time to detect distances to edges in different directions in deriving a disparity map from multiple image bitmaps. A method includes subjecting an image bitmap to a first-order wavelet filter a selected number of times, an orientation of the first-order wavelet filter altered each time to create a first set of intermediate maps; and subjecting the first image bitmap to a second-order wavelet filter the selected number of times, an orientation of the second-order wavelet filter altered each time to create a second set of intermediate maps; the first-order and second-order wavelet filters, as well as their orientations, selected to be mathematically related such that the first-order wavelet filter approximates a sine function and the second-order wavelet filter approximates a related cosine function, both masked by a gaussian.
|Method for adjusting the oscillation frequency of a sprung balance assembly|
A method adjusting oscillation frequency of a sprung balance assembly formed at random from balance springs and balance wheels. A production mechanism is set to limit a sample standard deviation of a single batch of balance springs to a predetermined maximum value, and to limit a sample standard deviation of a single batch of balance wheels to a predetermined maximum value within a given unbalance tolerance.
|Apparatus and method for transmitting and receiving signal of ofdm system|
A method and apparatus for transmitting an ofdm signal including converting a distribution of a signal in which inverse fourier transform is performed in an ofdm system and a method of receiving an ofdm signal including expanding a received signal are provided, and by changing a magnitude distribution of a signal that is output from an ofdm modulator to a bimodal gaussian distribution, an influence of noise in a receiving terminal can be reduced, and by limiting a signal that is output from an ofdm modulator to an appropriate magnitude, a phase in the receiving terminal can be prevented being wrongly demodulated.. .
|Leveraging to minimize the expected inverse assets|
The question of how much should be placed at risk on a given investment, relative to the total assets available for investment, is basically that of determining the optimal leverage. An existing well known method for calculating optimal leverage does not appear to be derived from sound principles.