Research and Technology Objectives and Plans Summary (RTOPS)

A compilation of the summary portions of each of the Research and Technology Operating Plans (RTOP) used for management review and control of research currently in progress throughout NASA is presented along with citations and abstracts of the RTOPs. Indexes include: subject; technical monitor; responsible NASA organization; and RTOP number

Creating high performance enterprises

Thesis (Ph. D.)--Massachusetts Institute of Technology, Engineering Systems Division, 2006.Includes bibliographical references (p. 131-140).How do enterprises successfully conceive, design, deliver, and operate large-scale, engineered systems? These large-scale projects often involve high complexity, significant technical challenges, a large number of diverse stakeholders, distributed execution, and aggressive goals. In this context, simultaneously meeting technical performance, cost, and schedule goals effectively and efficiently is a serious challenge. In fact, it is rarely accomplished. The nature of an enterprise contributes to this challenge. Enterprises are interorganizational networks with distributed leadership and stakeholders with both common and diverse interests. They are unique from traditional levels of analysis in organizational studies, and in general their behavior is not well understood. They are a prevalent form of organizing work in these large engineering projects, where one organization simply does not have the capability or willingness to take on the entire project by themselves. This work explores the factors that distinguish high performance enterprises from those that are less successful in these large-scale projects. The setting for this research is programs in the aerospace industry.(cont.) A comparative case study method was used to study nineteen programs spanning the U.S. (mainly defense) aerospace industry in order to develop grounded theory regarding contemporary program execution strategies and distinguishing attributes. Drawing on prior research with high performance teams, several characteristics were explored and refined, eventually resulting in identification of ten best practices. The contribution of this work is codification of these best practices into a coherent framework of complementary elements relating to particular outcomes. The framework articulates three drivers of individual and systemic behaviors: a system of distributed leadership, informal and formal structures. The framework addresses the role each of these plays in enterprise performance. The synergistic combination of the elements enables enterprises to execute planned activities, leverage emergent opportunities, and deal with unforeseen circumstances. For enterprises involved in large-scale engineering projects, these capabilities are a necessity for success. In addition to an academic theory, this framework can be considered an architectural design for high performance enterprises. Putting this enterprise architecture into practice has important implications for both corporate and program management.by Alexis Kristen Stanke.Ph.D

Research and Technology Objectives and Plans (RTOP), summary

A compilation of summary portions of each of the Research and Technology Operating Plans (RTOPS) used for management review and control of research currently in progress throughout NASA is presented. Subject, technical monitor, responsible NASA organization, and RTOP number indexes are included

Research and Technology Objectives and Plans Summary (RTOPS)

A compilation of summary portions of each of the Research and Technology Objectives and Plans (RTOPS) used for management review and control of research currently in progress throughout NASA is presented. Subject, technical monitors, responsible NASA organization, and RTOP number indexes are included

Clustering Transmission Opportunity Length (CTOL) Model over Cognitive Radio Network

This paper investigated the throughput performance of a secondary user (SU) for a random primary user (PU) activity in a realistic experimental model. This paper proposed a sensing and frame duration of the SU to maximize the SU throughput under the collision probability constraint. The throughput of the SU and the probability of collisions depend on the pattern of PU activities. The pattern of PU activity was obtained and modelled from the experimental data that measure the wireless local area network (WLAN) environment. The WLAN signal has detected the transmission opportunity length (TOL) which was analyzed and clustered into large and small durations in the CTOL model. The performance of the SU is then analyzed and compared with static and dynamic PU models. The results showed that the SU throughput in the CTOL model was higher than the static and dynamic models by almost 45% and 12.2% respectively. Furthermore, the probability of collisions in the network and the SU throughput were influenced by the value of the minimum contention window and the maximum back-off stage. The simulation results revealed that the higher contention window had worsened the SU throughput even though the channel has a higher number of TOLs

Research and Technology Objectives and Plans Summary (RTOPS)

A compilation of the summary portion of each of the Research and Technology Operating Plans (RTOP) used for management review and control of research currently in progress throughout NASA is presented along with citations and abstracts of the RTOPs. Four indexes are included: (1) subject; (2) technical monitor; (3) responsible NASA organization; and (4) RTOP number

Research and Technology Objectives and Plans Summary (RTOPS)

The NASA Research and Technology program for FY 1978 is represented by this compilation of the 'Summary' portions of each of the Research and Technology Objectives and Plans (RTOPS). The RTOP Summary is designed to facilitate communication and coordination among concerned technical personnel in government, in industry, and in universities. The first section contains citations and abstracts of the RTOPs. Following this section are four indexes: Subject, Technical Monitor, Responsible NASA Organization, and RTOP Number