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| 20090018975 | METHOD FOR ESTABLISHING A COMMERCIAL REAL ESTATE PRICE CHANGE INDEX SUPPORTING TRADABLE DERIVATIVES - Method for establishing a commercial real estate price change index supporting tradable derivatives. The method utilizes a database of price changes actually experienced by individual commercial properties including allowing for gradual accumulation of price data. The database is filtered with selected data filters and time-weighted dummy variables are specified. A repeat-sales regression is performed on the filtered database to create the index. The repeat-sales regression includes a weighted least squares estimation in which weights are determined in a three-stage regression process. A ridge regression noise filter in which a first order autocorrelation coefficient in estimated index price-change returns controls the ridge estimation, and the first autocorrelation coefficient is near 0. The index is optimized for derivative trading purposes by excluding backward adjustments and a scope and frequency for the index is selected. The index may be used for tradable derivatives. | 01-15-2009 |
| 20090099948 | Two-Stage Estimation of Real Estate Price Movements for High Frequency Tradable Indexes in a Scarce Data Environment - Indexes of commercial property prices face much scarcer transactions data than housing indexes, yet the advent of tradable derivatives on commercial property places a premium on both high frequency and accuracy of such indexes. The dilemma is that with scarce data a low-frequency return index (such as annual) is necessary to accumulate enough sales data in each period. This invention presents an approach to address this problem using a two-stage procedure with frequency conversion, by first estimating lower-frequency indexes staggered in time, and then applying a generalized inverse estimator to convert from lower to higher frequency return series. The two-stage procedure can improve the accuracy of high-frequency indexes in scarce data environments, and also can mitigate an errors-in-variables problem that arises at very high frequency even with plentiful data (e.g., monthly indexes). In this paper the method is demonstrated and analyzed via simulation analysis and by application to empirical commercial property repeat-sales data. | 04-16-2009 |
| 20100174663 | REIT-Based Pure Property Return Indexes - The present disclosure is directed to generating REIT-based pure property return indexes. First, REIT return data is compiled from each REIT of a plurality of REITs at a predetermined frequency. Then, the generated REIT return data is de-levered and processed according to exposures to each of a plurality of target characteristics to obtain coefficients reflecting each REIT's weight in an index. Finally, an index is generated according to the REITs, the obtained coefficients, and the weights. | 07-08-2010 |
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| 20080214953 | Tissue-characterization system and method - A measurement system and method are provided for use in characterizing a tissue. The system comprises a probe adapted for operating in either a scan mode or a measure mode, and a control unit for operating the probe. The probe comprises a sensing module for measuring one or more parameters indicative of one or more states of the tissue; and an attachment module configured and operable to enable selective operation of the probe in either one of the scan mode and the measure modes. The control unit is configured and operative to selectively operate the probe in either one of the scan and measure modes. | 09-04-2008 |
| 20080249434 | Device and Method for Transporting and Handling Tissue - A device and method and provided for tissue handling, while maintaining the in-vivo tissue orientation. The device includes a structure, configured for receiving and holding a tissue specimen, wherein the tissue specimen includes tissue positional references; and device positional references, associated with the structure, for fixing the orientation of the tissue specimen, when held by the device, so as to reflect the tissue specimen positional references. | 10-09-2008 |
| 20080287750 | Ergonomic probes - An ergonomic device for intraoperative tissue characterization is provided, having a gripping handle and a sensor head, arranged with an angle α between them, wherein in absolute value, α>10 degrees, and α may be adjusted in one, two, or three planes. The device may further comprise a light fixture, configured for lighting the tissue, as it is characterized, a marking module, configured for marking the tissue, as it is characterized, a vacuum system, for improved contact between a sensing surface and the tissue, and a transparent frame, which enables an operator to observe the tissue, as it is characterized. The device may be operative with at least one sensor, selected from the group consisting of an optical sensor, an X-ray sensor, an RF sensor, a MW sensor, an infrared thermography sensor, an ultrasound sensor, an MR sensor, an impedance sensor, a temperature sensor, a biosensor, a chemical sensor, a radioactive-emission sensor, a nonirradiative RF sensor, and a mechanical sensor. | 11-20-2008 |
| 20090062637 | Electromagnetic Sensors for Tissue Characterization - A sensor for tissue characterization is provided, comprising: a resonator, configured to be placed proximally to an edge of a tissue for characterization, without penetrating the tissue, the resonator comprising a conductive structure associated with a diameter-equivalent dimension D, in a plane substantially parallel with the edge, and with a feature size d; and at least one conductive lead, for providing communication with an external system, wherein the resonator is configured to resonate at a frequency which corresponds to a free-air wavelength range of between about lambda and about 40 lambda, wherein lambda is at least about ten times the diameter-equivalent D, and wherein upon receiving a signal in the range of between about lambda and about 40 lambda, the sensor is configured to induce electric and magnetic fields, in a near zone, in the tissue, the near zone having a diameter of about D, so that the tissue in the near zone effectively functions as part of the resonator, influencing its resonating values, and so the tissue in the near zone is thereby characterized by its electromagnetic properties, by the resonating response of the resonator. | 03-05-2009 |
| 20090322347 | RF CALIBRATION DEVICE AND METHOD - A measurement device is presented being configured to be connectable to an analyzer unit (comprising a network analyzer). The measurement device comprises a measuring unit and a calibration and control unit connected to and integral with the measuring unit. The calibration and control unit is configured to enable connection of the measuring unit to the analyzer unit. The calibration and control unit comprises a number of terminals of known RF reflection coefficients respectively and comprises a memory utility carrying recorded data indicative of said RF reflection coefficients and recorded data indicative of RF transfer coefficients of the calibration and control unit. This configuration enables calculation of the RF response of the measuring unit while remaining integral with the calibration and control unit. | 12-31-2009 |
