Enabling Advanced Wind-Tunnel Research Methods Using the NASA Langley 12-Foot Low Speed Tunnel

Design of Experiment (DOE) testing methods were used to gather wind tunnel data characterizing the aerodynamic and propulsion forces and moments acting on a complex vehicle configuration with 10 motor-driven propellers, 9 control surfaces, a tilt wing, and a tilt tail. This paper describes the potential benefits and practical implications of using DOE methods for wind tunnel testing - with an emphasis on describing how it can affect model hardware, facility hardware, and software for control and data acquisition. With up to 23 independent variables (19 model and 2 tunnel) for some vehicle configurations, this recent test also provides an excellent example of using DOE methods to assess critical coupling effects in a reasonable timeframe for complex vehicle configurations. Results for an exploratory test using conventional angle of attack sweeps to assess aerodynamic hysteresis is summarized, and DOE results are presented for an exploratory test used to set the data sampling time for the overall test. DOE results are also shown for one production test characterizing normal force in the Cruise mode for the vehicle

Reassessing Humanism and Science

Histor

Rehearsing in the margins: mathematical print and mathematical learning in the early modern period

Early modern mathematical culture used the written word in highly distinctive ways. The various kinds of mathematical activity were all experienced in the early modern period as special kinds of performance: arithmetical calculation, proportional reasoning, algebraic manipulation and geometrical proving. The normal way they were transmitted—taught and learned—involved demonstration by a teacher, private rehearsal and finally specimen performance by the student. Slates, waste paper, and the margins of printed texts all bear the traces of learners’ rehearsals. This chapter examines the evidence for this mathematical culture and the influences on it of ancient and early modern examples

Cochrane vs Non-Cochrane Review in IBD: A Systematic Review

In meta-analyses with the same set of interventions and outcomes, what are the differences in terms of methodological and statistical quality, and effect size

Antibiotics for the induction and maintenance of remission in ulcerative colitis

Objectives This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To determine whether antibiotic therapy is safe and effective for the induction and maintenance of remission in ulcerative colitis (UC)

Local Excision Without Radiation for High-Grade Soft-Tissue Sarcoma of the Extremity and Superficial Trunk

Purpose. Limb-sparing surgery combined with radiation treatment has become the accepted treatment for patients with high-grade soft-tissue sarcoma. Adjuvant radiation was not routinely used at this institution for patients with clear margins after surgery.This retrospective review analyses the outcome of this group of patients

Glossary of Printing and Misprinting: Japanese

Translation of Glossary of Printing and Misprinting into Japanes

Treatments for intractable constipation in childhood

Objectives This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To evaluate the efficacy and safety of treatments used for intractable constipation in children