79,086 research outputs found
Experimental evaluation of iterative learning control algorithms for non-minimum phase plants
No full textThe purpose of this paper is two-fold, firstly it describes the development and modelling of an experimental test facility as a platform on which to assess the performance of Iterative Learning Control (ILC) schemes. This facility includes a non-minimum phase component. Secondly, P-Type, D-Type and phase-lead types of the algorithm have been implemented on the test-bed, results are presented for each method and their performance is compared. Although all the ILC strategies tested experience eventual divergence when applied to a non-minimum phase system, it is found that there is an optimum phase-lead ILC design that maximizes convergence and minimizes error. A general method of arriving at this phase-lead from knowledge of the plant model is described. A variety of filters have been applied and assessed in order to improve the overall performance of the algorithm
Oral history interview with Richard Dean Freeman, 2008 Dec. 5
No full textRichard Dean Freeman was born in Rushville, Indiana on November 27, 1928 and grew up in West Lafayette where his father was a professor at Purdue University and later Associate Dean of Agriculture and Director of Resident Instruction. He received a bachelor of science in aeronautical engineering from Purdue in 1950 as well as bachelor of naval science and tactics the same year. Freeman earned a masters in industrial management from the Krannert Graduate School in 1954. Freeman served in the military as a Marine in Korea. He talks about campus life in the 1950s, special feats such as the heat tunnels, familiarity with campus buildings, and working for Dean George Hawkins, College of Engineering. He talks about many of his places of employmentGeneral Motors Corporation in Warren Ohio; TRW Inc. RamoWooldrige Division, Denver, Colorado, Vice President of Business Development, Rockwell International Anaheim, California, and currently International Pacific Company Newport, California. He has done research on Amelia Earhart and was the speaker at a Libraries hosted Back to Campus program in the 1990s. He was an active alumnus, Class of 1950, involved in the fundraising for the Class of 1950 building on campus. Among his awards and honors are 1973 Distinguished Engineering Alumnus; Outstanding Aerospace Engineer Award, Purdue School of Aeronautics and Astronautics (1999) and Lifetime Achievement Award from Kappa Sigma Fraternity (2004). Freeman served on the Dean of Libraries Advisory Committee from 1992-2003
Oral history interview with Richard Dean Freeman, 2008 Nov. 14
No full textRichard Dean Freeman was born in Rushville, Indiana on November 27, 1928 and grew up in West Lafayette where his father was a professor at Purdue University and later Associate Dean of Agriculture and Director of Resident Instruction. He received a bachelor of science in aeronautical engineering from Purdue in 1950 as well as bachelor of naval science and tactics the same year. Freeman earned a masters in industrial management from the Krannert Graduate School in 1954. Freeman served in the military as a Marine in Korea. He talks about campus life in the 1950s, special feats such as the heat tunnels, familiarity with campus buildings, and working for Dean George Hawkins, College of Engineering. He talks about many of his places of employment: General Motors Corporation in Warren Ohio; TRW Inc. RamoWooldrige Division, Denver, Colorado, Vice President of Business Development, Rockwell International Anaheim, California, and currently International Pacific Company Newport, California. He has done research on Amelia Earhart and was the speaker at a Libraries hosted Back to Campus program in the 1990s. He was an active alumnus, Class of 1950, involved in the fundraising for the Class of 1950 building on campus. Among his awards and honors are 1973 Distinguished Engineering Alumnus; Outstanding Aerospace Engineer Award, Purdue School of Aeronautics and Astronautics (1999) and Lifetime Achievement Award from Kappa Sigma Fraternity (2004). Freeman served on the Dean of Libraries Advisory Committee from 1992-2003
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Nezara similis Freeman 1940
No full textNezara similis Freeman, 1940 (Fig. 1 D, 5, 6A–B, 7 D, 8 D, 9 D, 11 A–B, 16 D) Nezara similis Freeman, 1940: 368; Linnavouri, 1982: 138; Azim & Shafee, 1978: 507 Nezara similis var. flavolineata Freeman, 1940: 369 Diagnosis. Thorax: ostiolar ruga auriculate, inconspicuous (Fig. 3 E). Abdomen: black maculae of urosternites reduced or absent; median spine of III abdominal segment long, reaching anterior margin of posterior coxae. Male: ventral rim of pygophore with brims restricted to posterolateral angles, abruptly ending (Fig. 8 D), shared with N. viridula, N. antennata and N. yunnana; paramere trilobate, two lobes with pointed apex, median lobe scarcely observed in posterior view. Female: posterior margins of gonocoxites 8 straight; basal half of laterotergites 9 concave (Fig. 16 D). Material examined: Nezara similis Freeman, 1940 Holotype (♂ — BMNH) with labels: a) by beating b) MT CAMEROON Musake 6,350ft 13.I. 1932 M. Steele B.M. 1934 - 240 c) Type d) Nezara similis Freem. Nezara similis var. flavolineata Freeman, 1940 (♀ BMNH) MT CAMEROON Musake 6,350ft 13.I. 1932 M. Steele B.M. 1934 - 240 Type. Paratypes: CAMEROON: Mt. Cameroon, Musake 5,400ft, 28.I. 1932 M. Steele B.M. 1934 - 240 (♂ — BMNH); Mt. Cameroon, Musake, 6,350ft, 13.I. 1932 M. Steele B.M. 1934 - 240 (♀ BMNH).Published as part of Ferrari, Augusto, Schwertner, Cristiano Feldens & Grazia, Jocelia, 2010, Review, cladistic analysis and biogeography of Nezara Amyot & Serville (Hemiptera: Pentatomidae), pp. 1-41 in Zootaxa 2424 on pages 20-21, DOI: doi:10.11646/zootaxa.2424.1.1, http://zenodo.org/record/19455
The effects of reducing worry in patients with persecutory delusions: study protocol for a randomized controlled trial
No full textBACKGROUND: Our approach to advancing the treatment of psychosis is to focus on key single symptoms and develop interventions that target the mechanisms that maintain them. In our theoretical research we have found worry to be an important factor in the development and maintenance of persecutory delusions. Worry brings implausible ideas to mind, keeps them there, and makes the experience distressing. Therefore the aim of the trial is to test the clinical efficacy of a cognitive-behavioral intervention for worry for patients with persecutory delusions and determine how the worry treatment might reduce delusions.METHODS: An explanatory randomized controlled trial - called the Worry Intervention Trial (WIT) - with 150 patients with persecutory delusions will be carried out. Patients will be randomized to the worry intervention in addition to standard care or to standard care. Randomization will be carried out independently, assessments carried out single-blind, and therapy competence and adherence monitored. The study population will be individuals with persecutory delusions and worry in the context of a schizophrenia spectrum diagnosis. They will not have responded adequately to previous treatment. The intervention is a six-session cognitive-behavioral treatment provided over eight weeks. The control condition will be treatment as usual, which is typically antipsychotic medication and regular appointments. The principal hypotheses are that a worry intervention will reduce levels of worry and that it will also reduce the persecutory delusions. Assessments will be carried out at 0 weeks (baseline), 8 weeks (post treatment) and 24 weeks (follow-up). The statistical analysis strategy will follow the intention-to-treat principle and involve the use of linear mixed models to evaluate and estimate the relevant between- and within-subjects effects (allowing for the possibility of missing data). Both traditional regression and newer instrumental variables analyses will examine mediation. The trial is funded by the UK Medical Research Council (MRC)/NHS National Institute of Health Research (NIHR) Efficacy and Mechanism Evaluation (EME) Programme.DISCUSSION: This will be the first large randomized controlled trial specifically focused upon persecutory delusions. The project will produce a brief, easily administered intervention that can be readily used in mental health services.Trial registration Current Controlled Trials ISRCTN23197625
Understanding jumping to conclusions in patients with persecutory delusions: working memory and intolerance of uncertainty
No full textBackground. Persecutory delusions are a key psychotic experience. A reasoning style known as ‘jumping to conclusions’ (JTC) – limited information gathering before reaching certainty in decision making – has been identified as a contributory factor in the occurrence of delusions. The cognitive processes that underpin JTC need to be determined in order to develop effective interventions for delusions. In the current study two alternative perspectives were tested: that JTC partially results from impairment in information-processing capabilities and that JTC is a motivated strategy to avoid uncertainty.Method. A group of 123 patients with persistent persecutory delusions completed assessments of JTC (the 60:40 beads task), IQ, working memory, intolerance of uncertainty, and psychiatric symptoms. Patients showing JTC were compared with patients not showing JTC.Results. A total of 30 (24%) patients with delusions showed JTC. There were no differences between patients who did and did not jump to conclusions in overall psychopathology. Patients who jumped to conclusions had poorer working memory performance, lower IQ, lower intolerance of uncertainty and lower levels of worry.Working memory and worry independently predicted the presence of JTC.Conclusions. Hasty decision making in patients with delusions may partly arise from difficulties in keeping information in mind. Interventions for JTC are likely to benefit from addressing working memory performance, while in vivo techniques for patients with delusions will benefit from limiting the demands on working memory. The study provides little evidence for a contribution to JTC from top down motivational beliefs about uncertainty
Barn, Freeman SD, Hutchinson County
No full text4 x 6 photograph, white barn with a row of windows on the side, sliding door on the front, room on the side with a slanted roof, round roof with a hay hood and ventilator surrounded by a fence, there is snow on the groundH2010-041 Barns Vernell Johnson Coll. Box 2[stamp] 3A 003 [photographer stamp] Photo By: Vernell Johnson, Lyons, S. D. 3 S & 1/4 E of Freeman S. D
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