Showing papers on "IBM PC compatible published in 2001"

Hybrid CNC control system

Abstract: The present invention demonstrates an improved CNC Control system, which integrates operator-induced changes into the pre-programmed CNC machining process. The improved CNC Control system develops a Human Activity Storage Program (HASP), which is used for subsequent production in conjunction with and simultaneously with the Numerical Control Program thereby enhancing the production process by integrating the skilled machinist's input into the production process. The numerical control program of a CNC machine is interfaced with an IBM compatible personal computer (PC) to make information relative to the block number, feed-rate and/or spindle speed over-ride values available at the personal computer. If the CNC Control has been re-configured properly (with regard to the ladder interface and operating system) a PC computer is not required. During the machining of a part the machine operator will manually over-ride the feed-rate and/or the spindle speed to optimize machining performance. Through the use of VISUAL BASIC OR C++programming modules and routines, the spindle speed and feed-rate controls (located at the CNC Control) are polled at frequent or 5OO ms intervals. The status or over-ridden values of these controls are correlated to the active block number in use during each polled sequence and this information is written to an “event file”. After the subject part has been completed, one of two options can be used. An “edit phase” is initiated which utilizes the information in the “event file” to reconstruct the MCD file. After the edit phase is complete, the resultant output “Optimized MCD” can be used to produce like parts with confidence that all motion is running at peak performance and all programmed trajectories are maintained. The cycle can be repeated again (if desired) to ensure even greater efficiency while cutting. In the alternative, the event file can be employed to “command” the CNC Control with respect to feed-rate and/or spindle speed over-ride settings.

Proprietary vs. open standards in the network era: an examination of the Linux phenomenon

Abstract: For networked IT industries, standards adoption is a key prerequisite for attracting complementary assets. Producer firms that hope to profit from their standards success must trade off control of the standard against the imperative for adoption. Moschella outlines three eras of modern computing: systems personal computers and network, each with its own form of standards competition. During the systems era of computing, mainframe producers maximized their control by offering vertically integrated standards architectures. In the PC era, IBM unintentionally surrendered control to two key suppliers in its haste to launch the IBM PC and maximize its adoption. Microsoft and Intel in turn sought pervasive adoption of their technologies by appropriating only a single layer of the standards architecture and publishing a subset of the interfaces to other layers. In reaction to these proprietary strategies, the open source movement developed software that relinquishes control in favor of adoption. Such free software has played an important role in Internet infrastructure, and its adherents argue that it will supplant such proprietary standards in the network era. This study examines the rise of the Linux operating system, with particular focus on its role as a PC server operating system in competition with the established Microsoft Windows OS. While Linux has its origins in the 1984 GNU Project, and was widely available beginning in 1993, we focus on the adoption motivations of organizational buyers and suppliers of complementary assets during the period 1995-1999.

Hyperspectral analysis tool

Abstract: A system and method for assessing the probability of detection of a target of a hyperspectral sensing system. The system is adapted to calculate the probability of detection of targets based on various sensor parameters, atmospheric conditions, and a specified combination of targets and backgrounds for a given false alarm rate. The system may be executed, for example, on an IBM compatible PC to allow the user to optimize the hyperspectral sensor and subsequent signal processing to a particular set of backgrounds and targets. The sensor models, atmospheric models and target and background profiles are initially applied to the system in the form of the databases. As such, the system enables the user to select among the various parameters to optimize a hyperspectral sensor and the subsequent signal processing for a particular set of parameters.

Analyzing fault effects in fault insertion experiments

Abstract: Addresses the problem of evaluating system sensitivity to hardware faults. For this purpose the authors use a software implemented fault injector with extended statistical capabilities (FITS). The main contribution of the paper is the formulation of basic factors influencing system dependability and checking them in experiments. These experiments have been performed on an IBM PC platform.

Implementing PET-guided biopsy : Integrating functional imaging data with digital X-ray Mammography cameras

Abstract: Purpose: Phantom trials using the PET data for localization of hot spots have demonstrated positional accuracies in the millimeter range. We wanted to perform biopsy based on information from both anatomic and functional imaging modalities, however we had a communication challenge. Despite the digital nature of DSM stereotactic x-ray mammography devices, and the large number of such devices in Radiology Departments (approximately 1600 in the US alone), we are not aware of any methods of connecting stereo units to other computers in the Radiology department. Methods: We implemented a local network between an external IBM PC (running Linux) and the Lorad Stereotactic Digital Spot Mammography PC (running DOS). The application used IP protocol on the parallel port, and could be run in the background on the Lorad PC without disrupting important clinical activities such as image acquisition or archiving. With this software application, users of the external PC could pull x-ray images on demand from the Lorad DSM computer. Results: X-ray images took about a minute to ship to the external PC for analysis or forwarding to other computers on the University's network. Using image fusion techniques we were able to designate locations of functional imaging features as additional targets on the anatomic x-rays. These pseudo-features could then potentially be used to guide biopsy using the stereotactic gun stage on the Lorad camera. New Work to be Presented: A method of transferring and processing stereotactic x-ray mammography images to a functional PET workstation for implementing image-guided biopsy. Conclusions: A necessary step of integrating functional images with an industry-standard anatomic breast biopsy workstation has been accomplished.

Experimental evaluation of CPU performance features

Abstract: The paper addresses the problem of evaluating CPU performance in real system environment. We present an efficient methodology of CPU performance analysis at the architecture (coarse grained) and microarchitecture (fine grained) levels. It is based on time and internal event monitoring technique. This methodology is referred to Intel processors operating in IBM PC environment. The usefulness of the presented approach was proved in many experiments described in the paper.

Hardware device for the data protection of personal computer which includes control driver program for data encryption decryption and I/O devicesUSB printer port serial port FDD etc.

Abstract: PURPOSE: A hardware device having a driver program for changing and recovering a data for security of a personal computer and controlling an external input/output apparatus(a USB port, a printer port, a serial port, a FDD, etc.) is provided to prevent data leakage through an external input/output apparatus by an uncertified user. CONSTITUTION: A driver program operates by receiving a command of an application program. A management board is installed on the driver program. A decoding logic(3) decodes an address bus by being installed on an ISA slot of an IBM PC. A flash memory(4) stores a data bus latch, a data and the driver program. An address of the flash memory is determined by using a data on the PC Bus. A wanted information is readable and writable in the upper application program. A loading, an input/output information and a data access history of a user are recorded in the flash memory. The application program records a coded information in a certain area. If a predetermined information in a predetermined area is not read, the application program is finished or the system is shut down.

NORMAN, a QuickBasic programme for petrochemical re-calculation of whole-rock major-element analyses on IBM PC

Abstract: NORMAN is a Microsoft QuickBasic 4.5 package designed for handling and recalculation of whole-rock major-element data from igneous and metamorphic rocks on PC compatible computers. It is capable of computing parameters of the most common normative calculation schemes, including CIPW and Catanorm. The core of the system consists of modules to handle the import, editing and saving of the major-element analyses, as well as browsing, saving and exporting the computed results. The calculation algorithms are: (1) nearly independent QuickBasic programmes (ìstandard modulesî), and (2) plain text calculation scripts (ìuser-defined functionsî) that may contain variables referring to the original data, to constants as well as to parameters calculated by other standard modules and user-defined functions. The advantage of the chosen approach is the simplicity, availability and open architecture that enables an average user not only to follow, but also, if need be, to modify the algorithms applied to his data.

Computers for imaging

Abstract: Most photographers involved with digital imaging use either the IBM PC Compatible type (PC) or the Apple Macintosh computer. Over the last few years there have been great debates about which platform is best, but the situation today is that, to all intents and purposes, both systems will perform the same functions for around the same price, and that the choice becomes one of personal preference.

The history of versaCAD

Abstract: For this issue's column, I'm delighted to bring you some reminiscences courtesy of Tom Lazear, President of Archway Systems. Tom wrote one of the first (Gwen Bell of the Computer Museum cautioned me never to claim anything as the first!) PC-CAD (computer-aided design) systems. T-Square, for the Terak PC, was subsequently adapted as CADapple for the ApplellE, and preceded AutoCAD (which was written for the IBM PC).Before presenting Tom's article, I want to remind you of ongoing Pioneer opportunities. Pioneer membership requires at least 20 years in the field, which means that if you were involved in computer graphics by 1981, you're now eligible for membership! Let's hear from you.