Energy efficient engine: Turbine transition duct model technology report

The Low-Pressure Turbine Transition Duct Model Technology Program was directed toward substantiating the aerodynamic definition of a turbine transition duct for the Energy Efficient Engine. This effort was successful in demonstrating an aerodynamically viable compact duct geometry and the performance benefits associated with a low camber low-pressure turbine inlet guide vane. The transition duct design for the flight propulsion system was tested and the pressure loss goal of 0.7 percent was verified. Also, strut fairing pressure distributions, as well as wall pressure coefficients, were in close agreement with analytical predictions. Duct modifications for the integrated core/low spool were also evaluated. The total pressure loss was 1.59 percent. Although the increase in exit area in this design produced higher wall loadings, reflecting a more aggressive aerodynamic design, pressure profiles showed no evidence of flow separation. Overall, the results acquired have provided pertinent design and diagnostic information for the design of a turbine transition duct for both the flight propulsion system and the integrated core/low spool

Vibration Isolation System

The Vibration Isolation System Senior Project is a collaborative group project between its sponsor, Maxar Technologies, and a team of students from Cal Poly - SLO to effectively design, manufacture, and test a structural assembly for satellites, isolating vibrations during launch and orbit conditions. After initial sponsor contact, requirements and needs were set which dictated deliverables for the senior project group. The group performed analyses to validate all design decisions, including a modified concept and design direction, selection of a prototype viscoelastic damping material, preliminary testing to validate design specifications, and detailed design and analysis toward a finalized design. Instead of moving forward with the manufacturing and testing as planned, it was necessary to create a modified scope with the necessary items due to the COVID-19 situation. This document contains screenshot from the senior project website found at https://projectexpo.calpoly.edu/2020/vibration-isolation-system/. Screenshots include the project definition, initial designs, background information, final design, analyses and an image gallery. Supplemental videos can also be found on the listed website

Management information system, challenges and solutions

Today, increasing the growth of IT and its considerable effect on increasing productivity of public and private organizations at the world and global movement to using different types of information systems namely Management Information System (MIS) caused that Iran also moves toward this trend. This trend was encountered with successes, failures and challenges. The review of the problems of design process, establishment, operation and development of management information systems in a country can be of great importance in the decision making of the public and private sector organizations. The wise application of new IT namely MIS in Iran can pave the way for the development and increases its efficiency and effectiveness.The present study explained the position, aim, role, definition, concept, dimensions, benefits and classification of management information systems and reviewed the problems and barriers of the organizations. Finally, some solutions and propositions were presented to cope with the challenges of management information systems

Management information system, challenges and solutions

Today, increasing the growth of IT and its considerable effect on increasing productivity of public and private organizations at the world and global movement to using different types of information systems namely Management Information System (MIS) caused that Iran also moves toward this trend. This trend was encountered with successes, failures and challenges. The review of the problems of design process, establishment, operation and development of management information systems in a country can be of great importance in the decision making of the public and private sector organizations. The wise application of new IT namely MIS in Iran can pave the way for the development and increases its efficiency and effectiveness.The present study explained the position, aim, role, definition, concept, dimensions, benefits and classification of management information systems and reviewed the problems and barriers of the organizations. Finally, some solutions and propositions were presented to cope with the challenges of management information systems

Shuttle free-flying teleoperator system experiment definition. Volume 3: program development requirements

The planning data are presented for subsequent phases of free-flying teleoperator program (FFTO) and includes costs, schedules and supporting research and technology activities required to implement the free-flying teleoperator system and associated flight equipment. The purpose of the data presented is to provide NASA with the information needed to continue development of the FFTO and integrate it into the space shuttle program. The planning data describes three major program phases consisting of activities and events scheduled to effect integrated design, development, fabrication and operation of an FFTO system. Phase A, Concept Generation, represents a study effort directed toward generating and evaluating a number of feasible FFTO experiment system concepts. Phase B, Definition, will include preliminary design and supporting analysis of the FFTO, the shuttle based equipment and ground support equipment. Phase C/D, Design, Development and Operations will include detail design of the operational FFTO, its integration into the space shuttle, hardware fabrication and testing, delivery of flight hardware and support of flight operations. Emphasis is placed on the planning for Phases A and B since these studies will be implemented early in the development cycle. Phase C/D planning is more general and subject to refinement during the definition phase

Building Information Modeling as an Effective Process for the Sustainable Re-Shaping of the Built Environment

This paper focuses on the definition of a method supported by digital processes for a sustainable and user-orientated re-design of the existing building stock. Based on the analysis of the methodological and procedural aspects of the computational approach to architectural design in relation to different performance conditions, the research addresses the adoption of Building Information Modeling (BIM), intended as a powerful method for coordinating the complexity of the multiple, interdisciplinary and conflicting aspects involved in the rehabilitation of buildings. In addition to the advantages in terms of control and management, the BIM process has proven its effectiveness in tackling the issue of sustainability, allowing all actors involved in the research to share information and pro-actively control various outcomes of a building’s performance, such as energy and environmental quality. To show the opportunities and limitations of the digital management in information-based processes, the activities carried out in the framework of the European Horizon 2020 project “Pro-GET-onE—Proactive synergy of inteGrated Efficient Technologies on buildings’ Envelopes” are reported. The research, based on a case study method, which is applied to a student residence in Athens, demonstrates that BIM possesses great potentialities for developing effective and efficient construction and renovation processes toward buildings with high quality standards

Managing multimedia content databases

The Internet provides an effective means of dissemination of information in the Humanities, and so in many cases the Internet is becoming the primary or even only form for dissemination of information. In this context, the effective management of published resources becomes essential. Management of published multimedia content on the internet must deal with not only the Content Management but issues of technological obsolescence, effective management and reuse of the digital assets, and version control of information. Sites must address the established disciplines of effective description, classification and preservation to be more than just transient sources of information. Content Management systems on their own address only one part of the problem: the workflow management of publication and separation of content from presentation. The theory toward a Content Management System design that incorporates elements of digital asset management and version control will be described and a working system that implements these principles through internal XML definition of content structures and use of relational database techniques to provide database content management.Hosted by the Scholarly Text and Imaging Service (SETIS), the University of Sydney Library, and the Research Institute for Humanities and Social Sciences (RIHSS), the University of Sydney

Perception and Attitude of Library and Information Science Professionals towards Knowledge Management: A Survey of Certified Librarians in Nigeria

Knowledge management can be closely linked with activities that overlapped with library practices. Lack of credence on how this two concept interwoven makes library and information science professionals to held distinct understanding of the concept knowledge management, most especially on how it relate to librarianship and information management, and at that, that there is no unity of consensus on which knowledge management definition should be considered universally acceptable. The study adopted a survey research design in exploring the perception and attitude of library and information science professionals in Nigeria toward knowledge management. Certified librarians in Nigeria (CLNs) constitute the unit of analysis and their total population stood at 5,437 from which a sample size of 3,000 was drawn using clustered random sampling techniques. Questionnaire is the instrument for data collection which was administered on a web-based platform, Proprofs survey maker (www.proprofs.com). But due to difficulties associated with web-based questionnaire, Only 389 participants respond to the survey, and a total number of usable, fully completed questionnaire is 369. Collected data was subjected to descriptive statistical analysis. The study reported that LIS professionals in Nigeria perceived knowledge management as an allied field of study that expands the horizon of the profession, even though some still perceived it as another name for information management or librarianship in another cloth/case of old wine in new bottle. Most participants prefer IFLA definition of KM to other definitions. In order to embrace the opportunities and as well curb the threats of knowledge management to library and information science profession, the study suggested that regulatory bodies and library associations should educate professionals on the position of LIS professionals in knowledge management through seminars, research report, conference proceedings, symposiums and any other means at their disposal

Understanding the Role of Knowledge Co-Production between Users and Developers in ISD Project: An Intellectual Capital Perspective

Information system development (ISD) has long been treated as that process that system developers craft an artifact to support business operation based on their special expertise. However, a significant portion of projects still have failed because the developed outcome cannot fit users’ needs. An emerging internal service concept indicates that, by treating ISD as one type of service, the requirement definition can be viewed as a co-production process in which users and developers integrate their own knowledge. By incorporating this concept into research design and taking intellectual capital perspective into account, this study proposed a model to examine the antecedents and consequences of knowledge co-production between users and developers. Data collected from 267 developers confirmed our hypotheses that knowledge co-production can benefit ISD outcomes, and common knowledge, relational capital and participative decision-making between these two parties increase the effectiveness of knowledge co-production effectively. Lastly, the implications toward academic and practitioner are also provided