3,973 research outputs found

    The role of the host in a cooperating mainframe and workstation environment, volumes 1 and 2

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    In recent years, advancements made in computer systems have prompted a move from centralized computing based on timesharing a large mainframe computer to distributed computing based on a connected set of engineering workstations. A major factor in this advancement is the increased performance and lower cost of engineering workstations. The shift to distributed computing from centralized computing has led to challenges associated with the residency of application programs within the system. In a combined system of multiple engineering workstations attached to a mainframe host, the question arises as to how does a system designer assign applications between the larger mainframe host and the smaller, yet powerful, workstation. The concepts related to real time data processing are analyzed and systems are displayed which use a host mainframe and a number of engineering workstations interconnected by a local area network. In most cases, distributed systems can be classified as having a single function or multiple functions and as executing programs in real time or nonreal time. In a system of multiple computers, the degree of autonomy of the computers is important; a system with one master control computer generally differs in reliability, performance, and complexity from a system in which all computers share the control. This research is concerned with generating general criteria principles for software residency decisions (host or workstation) for a diverse yet coupled group of users (the clustered workstations) which may need the use of a shared resource (the mainframe) to perform their functions

    A Resource Based View of Business Method Patents

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    In recent years, patents have become widely popular for protecting software-based business methods. However, the IS literature has yet to consider the potential influence of patents in the IS-firm performance relationship. At the same time, the resource-based view (RBV) of the firm has proven to be a useful lens through which to examine the IS-firm performance relationship. In organizational strategy literature, various measures of patents are frequently utilized as proxies for components of the RBV or as the dependent variable in RBV studies. Following in this vein, the purpose of the current study is to examine whether software-based business method patents fit the definitions prescribed in the RBV and if such patents can be empirically connected to a firmā€™s performance

    An Undergraduate Information Security Program: More than a Curriculum

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    This paper describes the implementation of an information security program at a large Midwestern university. The initial work is briefly summarized and improvements that have occurred over time are described. Current activities and future plans are discussed. This paper offers insight and lessons learned for organizations that have or are planning to implement an information security program. Some key success factors for this program have been a faculty project champion, faculty dedication and tenacity, involvement with industry partners, alumni, and students, and continuous improvement

    The Impact of Perceived Research and Teaching Competence on the Credibility of a Basic Course Director: A Case Study

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    1992 Award Winning Paper in Basic Course Research This case study provides an initial inquiry into graduate teaching assistants\u27 (GTA) perceived credibility of a basic course director (BCD), specifically isolating their perception of the teaching and research competence of the BCD. The results indicate that the perceived credibility may be tied to both teaching and research competence, appears to be extremely important to the GTAs, and implies that low credibility would have many unpleasant effects on the staff, their teaching and the graduate program as a whole. This case study points to the need for more research to identify variables associated with the credibility of BCDs as a way to strengthen the quality of the basic course

    Gradually Guiding Nursing Students through Their Capstone Course: Registered Nurse Preceptors Share Their Experiences

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    Professional precepted immersion courses (capstone) have become the standard as a means to prepare senior nursing students to enter the workforce. Preceptors have a significant role in developing the student nurse, yet exactly how to prepare preceptors for this role has been an ongoing discussion. This qualitative inquiry explored the educational needs of clinical registered nurse (RN) preceptors who work directly with senior nursing students in a professional precepted immersion (capstone) course. A descriptive qualitative design was used to examine preceptors responses to a prepared set of questions about their educational needs. Results showed that preceptors have three distinct sets of learning needs: the need to know the expectations of their role, wanting to know how best to role model for the student, and knowing how to socialize the student into the profession of nursing. Overall, preceptors communicated their desire and commitment to doing the best job possible. They also clearly stated their expectation of faculty to have a physical presence on the nursing unit that included being proactive in resolving mismatches and exposing the student to the roles of provider of care, leader and manager of care, and member of profession

    Community Outreach and Engagement to Prepare for Household Recruitment of National Children\u27s Study Participants in a Rural Setting

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    CONTEXT: The National Children\u27s Study (NCS) is a longitudinal study of environmental influences on children\u27s health. Recruitment of a representative birth cohort that will be followed until 21 years of age requires unique approaches across the nationwide study communities.PURPOSE: To describe community outreach and engagement in preparation for household recruitment of women of childbearing age at a rural-classified NCS location that includes 4 adjacent Northern Plains counties spanning 2,500 square miles.METHODS: Outreach and engagement methods focused on rural community characteristics. The team established an advisory council, conducted outreach meetings with agencies and groups, participated in local events, and collaborated with stakeholders. Study awareness was raised using radio announcements, local television stories, and widespread distribution of print materials through churches, businesses, and child care centers. Impact evaluation examined the number of stakeholder events by type. Outcome evaluation examined the number of households contacted for recruitment, numbers of age-eligible women who completed the screening, and exploration of whether women had heard about the study.FINDINGS: Over 300 outreach events occurred, ranging from tribal council meetings to parade entries. Recruitment outcomes were as follows: (1) 80% of 14,700 non-vacant households were reached for potential recruitment; (2) screening interviews were conducted with 89% of the 5,800 age-eligible women identified; and (3) 53% of women who completed the screening had heard about the studyCONCLUSIONS: Outreach targeted to rural communities facilitated strong recruitment outcomes. Collaboration with the cooperative extension service was a unique rural asset that facilitated relevant activities. Participant retention is an ongoing priority

    The genome and proteome of coliphage T1

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    AbstractThe genome of enterobacterial phage T1 has been sequenced, revealing that its 50.7-kb terminally redundant, circularly permuted sequence contains 48,836 bp of nonredundant nucleotides. Seventy-seven open reading frames (ORFs) were identified, with a high percentage of small genes located at the termini of the genomes displaying no homology to existing phage or prophage proteins. Of the genes showing homologs (47%), we identified those involved in host DNA degradation (three endonucleases) and T1 replication (DNA helicase, primase, and single-stranded DNA-binding proteins) and recombination (RecE and Erf homologs). While the tail genes showed homology to those from temperate coliphage N15, the capsid biosynthetic genes were unique. Phage proteins were resolved by 2D gel electrophoresis, and mass spectrometry was used to identify several of the spots including the major head, portal, and tail proteins, thus verifying the annotation

    Continuation of research into software for space operations support: Conversion of the display manager to X Windows/Motif, volume 2

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    NASA is currently using a set of applications called the Display Builder and Display Manager. They run on Concurrent systems and heavily depend on the Graphic Kernel System (GKS). At this time however, these two applications would more appropriately be developed in X Windows, in which a low X is used for all actual text and graphics display and a standard widget set (such as Motif) is used for the user interface. Use of the X Windows will increase performance, improve the user interface, enhance portability, and improve reliability. Prototype of X Window/Motif based Display Manager provides the following advantages over a GKS based application: improved performance by using a low level X Windows, display of graphic and text will be more efficient; improved user interface by using Motif; Improved portability by operating on both Concurrent and Sun workstations; and Improved reliability

    Continuation of research into software for space operations support, volume 1

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    A prototype workstation executive called the Hardware Independent Software Development Environment (HISDE) was developed. Software technologies relevant to workstation executives were researched and evaluated and HISDE was used as a test bed for prototyping efforts. New X Windows software concepts and technology were introduced into workstation executives and related applications. The four research efforts performed included: (1) Research into the usability and efficiency of Motif (an X Windows based graphic user interface) which consisted of converting the existing Athena widget based HISDE user interface to Motif demonstrating the usability of Motif and providing insight into the level of effort required to translate an application from widget to another; (2) Prototype a real time data display widget which consisted of research methods for and prototyping the selected method of displaying textual values in an efficient manner; (3) X Windows performance evaluation which consisted of a series of performance measurements which demonstrated the ability of low level X Windows to display textural information; (4) Convert the Display Manager to X Window/Motif which is the application used by NASA for data display during operational mode

    Studies of a Lacustrine-Volcanic Mars Analog Field Site with Mars-2020-like Instruments

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    On the upcoming Marsā€2020 rover two remote sensing instruments, Mastcamā€Z and SuperCam, and two microscopic proximity science instruments, SHERLOC and PIXL, will collect compositional (mineralogy, chemistry, and organics) data essential for paleoenvironmental reconstruction. The synergies between and limitations of these instruments were evaluated via study of a Mars analog field site in the Mojave Desert, using instruments approximating the data that will be returned by Marsā€2020. A ground truth dataset was generated for comparison to validate the results. The site consists of a succession of clayā€rich mudstones of lacustrine origin, interbedded tuffs, a carbonateā€silica travertine deposit, and gypsiferous mudstone strata. The major geological units were mapped successfully using simulated Marsā€2020 data. Simulated Mastcamā€Z data identified unit boundaries and Feā€bearing weathering products. Simulated SuperCam passive shortwave infrared and green Raman data were essential in identifying major mineralogical composition and changes in lacustrine facies at distance; this was possible even with spectrally downsampled passive IR data. LIBS and simulated PIXL data discriminated and mapped major element chemistry. Simulated PIXL revealed mmā€scale zones enriched in zirconium, of interest for age dating. SHERLOCā€like data mapped sulfate and carbonate at subā€mm scale; silicates were identified with increased laser pulses/spot or by averaging of hundreds of spectra. Fluorescence scans detected and mapped varied classes of organics in all samples, characterized further with followā€on spatially targeted deepā€UV Raman spectra. Development of dedicated organics spectral libraries is needed to aid interpretation. Given these observations, the important units in the outcrop would be sampled and cached for sample return
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