An application of theory to axial compressor noise

Mathematical model of aircraft turbocompressor nois

Community acceptance of helicopter noise: Criteria and application

A study was conducted to define those criteria necessary for civil helicopter operations to be acoustically acceptable to the communities from which they operate and over which they fly. The study involved surveying existing domestic and foreign Federal regulations and guidelines, state and local noise ordinances, results of community noise annoyance studies, and results of individual aircraft noise annoyance studies, and results of individual aircraft noise annoyance studies in order to establish the criteria. The final criteria selection are based on the Day-Night Level, L sub DN, a measure of total noise exposure. The basic rating unit is the A weighted sound pressure level (dbA) which has accuracy comparable to other units currently used for aircraft. An L sub DN of 60 is recommended as a criterion for areas where the ambient noise is below 58 dbA. An L sub DN value 2 dbA above the local ambient is recommended for areas where the ambient is above 58 dbA

Conceptual design study of 1985 commercial VTOL transports that utilize rotors

Conceptual design studies of pure and compound helicopter commercial short-haul transport aircraft for initial fabrication in 1980 were performed to determine their technical and economic feasibility. One-hundred-passenger configurations were optimized for minimum direct operating cost consistent with producibility and marketability, with emphasis on proper account of mass properties, performance and handling qualities adequacy, and suppression of internal and external noise. The effect of external noise constraints was assessed, in terms of gross weight and direct operating cost, for each aircraft

Noise reduction study of orbiting workshop ventilation fans

Noise reduction in orbiting workshop ventilation fan

OncoLog, Volume 61, Number 02, February 2016

Overcoming Challenges in Cutaneous T Cell Lymphomas: Cutaneous T Cell lymphomas (CTCLs) not only are largely incurable but also make patients miserable with itching, burning skin and unsightly lesions. Because CTCL can resemble various benign skin conditions, many patients are diagnosed at an advanced and difficult-to-treat stage. But ongoing clinical trials may offer patients with CTCL improved treatments and better quality of life. Swallowing Therapy Improves Function and Quality of Life for Patients with Head and Neck Cancer: In patients with head and neck cancer, loss of swallowing function may result from radiation therapy, surgery, or the cancer itself and lead to poor health and reduced quality of life. At The University of Texas MD Anderson Cancer Center, individualized swallowing therapy programs directed by speech pathologists are helping patients maintain or recover their swallowing function during and after treatment. HOUSE CALL: Common Cancer Terms-Clearly understanding medical terms helps patients, caregivershttps://openworks.mdanderson.org/oncolog/1263/thumbnail.jp

OncoLog, Volume 60, Number 11 - 12, November - December 2015

Multidisciplinary Treatment Maximizes Outcomes for malignant Tumors of the Anterior Skull Base: Malignant tumors of the anterior skull base occur in a delicate area but often need aggressive treatment. Determining the best course of therapy for patients with these tumors takes a multidisciplinary effort. Management of Eyelid and Conjunctival Tumors with Preservation of Slight, Function and Cosmesis: Tumors of the eyelid and extent of disease, and which treatments, if any, are needed after surgical excision depends on several factors, including the potential for metastasis. HOUSE CALL: Other Health Risks from Smoking-Besides cancer, tobacco causes many diseases.https://openworks.mdanderson.org/oncolog/1261/thumbnail.jp

OncoLog, Volume 62, Number 03, March 2017

Immunotherapy for Glioblastoma: Clinical trials test innovative immunotherapy approaches against brain tumors. Virus-Specific T Cells Treat Posttransplant Infections: Banked T cells offer off-the-shelf therapy for patients with BK virus, JC virus, Cytomegalovirus infections after stem cell transplant. Intensity-Modulated Proton Therapy for Oropharyngeal Cancer: Clinical trial compares outcomes of intensity-modulated proton therapy, standard radiation therapy. HOUSE CALL: Lung Cancer Screening-Low-dose computed tomography can detect lung cancer earlyhttps://openworks.mdanderson.org/oncolog/1275/thumbnail.jp

An application of theory to axial compressor noise. Appendix C - Bessel functions of the first kind - A table of values for orders to 179 and arguments to 211

Application of theory to axial compressor nois

Hybrid Software Development Approaches in Practice: A European Perspective

Agile and traditional development approaches are used in combination in todays software development. To improve the understanding and to provide better guidance for selecting appropriate development approaches, it is important to analyze such combinations in practice. Results obtained from an online survey strongly confirm that hybrid development approaches are widely used in industry. Our results show that hybrid development approaches: (i) have become reality for nearly all companies; (ii) are applied to specific projects even in the presence of company-wide policies for process usage; (iii) are neither planned nor designed but emerge from the evolution of different work practices; and, (iv) are consistently used regardless of company size or industry secto