1,080 research outputs found
Structures of the conformational isomers and polymorph modifications of N-substituted 2,6-(E,E)-bis(ferrocenylidene)piperid-4-ones: photo- and electrochemically induced E/Z isomerization
No full textFour N-substituted 2,6-(E,E)-bis(ferrocenylidene)piperid-4-ones (NH 1, NMe 2, NEt 3, NCH2Ph 4) were prepared by aldol condensation between ferrocenecarbaldehyde and two equivalents of N-substituted piperid-4-ones with high yields. The N-protonated compounds were obtained by reaction with HBF4·Et2O acid. The molecular structures of compounds 2, 3, 2·HBF4 and 4·HBF4 were confirmed by X-ray diffraction analysis and three types of conformational isomers were elucidated. Two polymorph modifications were found for compound 2·HBF4. The electron transfer properties of the complexes were examined by electrochemical and spectroelectrochemical techniques. Complexes 1-4 undergo a reversible process of two-electron oxidation and partially reversible one-electron reduction. The photo- and electrochemically induced E/Z isomerisation of the complexes was monitored by UV-vis and 1H NMR spectroscopy
Gary Walton won a $500,000 award in his age-discrimination lawsuit against his f
No full textGary Walton won a $500,000 award in his age-discrimination lawsuit against his former employer, Nalco Chemical Co. It was the largest judgement ever of its kind in Maine and should start a wave of similar claims. Details, box defining age discrimination. Related From the editor column on the author\u27s age and Gary Walton\u27s
How "Chicagoan" are Gary Becker's Economic Models of Marriage?
No full textThis paper describes Gary Becker’s theoretical models of marriage. At the micro-level, these are all rational choice models. At the market level, Becker offers two major types of models: partial equilibrium models based on Price Theory as taught by Marshall and Friedman and optimal sorting models based on optimal assignment models. The paper examines some of the possible intellectual influences on Becker’s theory of marriage, compares Becker’s research on marriage with that of some scholars interested in intra-marriage distribution, and documents that Becker’s students at Chicago were more interested in Becker’s Friedmanian models of marriage than in his optimal assignment models.
Approaches to maintaining provenance throughout the additive manufacturing process
No full textThe development of 3D printers has resulted in significant Intellectual Property Right issues. This work presents a model for signing printable 3D objects. The paper initially reviews the security principles of signing of objects in both digital or physical form, and the metrics for assessing signatures. 3D designs are not just a file, but actual physical objects and should be treated identically, to digital documents that have associated intellectual property rights and copyright protection. In this paper we propose a signing methodology intended to resolve issues with the adaptation of rapid prototyping and 3D printing by users both in engineering and the humanities. The proposed digital signing methodology is based on physical signing principles that follow archival principles to maintain accurate records. The new model allows the transition of provenance between digital and physical form
Evaluating the development potential for intermodal transportation centers using the Miami Intermodal Center (MIC)
No full textThesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1996 [first author]; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Urban Studies, 1996 [second author].Includes bibliographical references (leaves 143-151).by Omar F. del Rio and Donald R. Hackstaff.M.S
Zoonotic potential of Giardia duodenalis and Cryptosporidium spp. and prevalence of intestinal parasites in young dogs from different populations on Prince Edward Island, Canada
No full textThe prevalence of Giardia duodenalis, Cryptosporidium spp. and other intestinal parasites was determined in dogs <1 year old from Prince Edward Island, Canada. Fecal samples were collected from the local animal shelter (n=62), private veterinary clinics (n=78) and a pet store (n=69). Intestinal parasites isolated included G. duodenalis, Cryptosporidium spp., Toxocara canis, Isospora spp. and Uncinaria stenocephala. To estimate the zoonotic risk associated with these infections, genotypes of G. duodenalis and Cryptosporidium spp. were determined using 16S rRNA and Hsp70 gene sequencing, respectively. Dogs from the pet store had the highest prevalence of intestinal parasites (78%, 95% CI: 68-88%), followed by the private veterinary clinics (49%, 95% CI: 37-60%), and the local animal shelter (34%, 95% CI: 22-46%). The majority G. duodenalis belonged to host-adapted assemblages D (47%, 95% CI: 31-64%) and C (26%, 95% CI: 13-43%), respectively. Zoonotic assemblages A and B were isolated alone or in mixed infections from 16% (95% CI: 6-31%) of G. duodenalis-positive dogs. All Cryptosporidium spp. were the host-adapted C. canis. While host-adapted, non-zoonotic G. duodenalis genotypes were more common, the presence of G. duodenalis assemblages A and B, T. canis, and U. stenocephala suggests that these dogs may present a zoonotic risk. The zoonotic risk from Cryptosporidium-infected dogs was minimal.Fabienne D. Uehlinger, Spencer J. Greenwood, J. Trenton McClure, Gary Conboy, Ryan O’Handley, Herman W. Barkem
Bibliography and brief literary biography of author Ruth Moore, born 1903. Her f
No full textBibliography and brief literary biography of author Ruth Moore, born 1903. Her first novel, The Weir, was published in 1943
Test a Witness’s Memory of a Suspect Only Once
No full textEyewitness misidentifications are almost always made with high confidence in the courtroom. The courtroom is where eyewitnesses make their last identification of defendants suspected of (and charged with) committing a crime. But what did those same eyewitnesses do on the first identification test conducted early in a police investigation? Despite testifying with high confidence in court, many eyewitnesses also testified that they had initially identified the suspect with low confidence or failed to identify the suspect at all. Presenting a lineup leaves the eyewitness with a memory trace of the faces in the lineup, including that of the suspect. As a result, the memory signal generated by the face of that suspect will be stronger on a later test involving the same witness, even if the suspect is innocent. In that sense, testing memory contaminates memory. These considerations underscore the importance of a newly proposed
recommendation for conducting eyewitness identifications: Avoid repeated identification procedures with the same witness and suspect. This recommendation applies not only to additional tests conducted by police investigators but also to the final test conducted in the courtroom, in front of the judge and jury.This Unpublished paper is done by John T. Wixted, Gary L. Wells, Elizabeth F. Loftus, & Brandon L. Garrett, Test a Witness’s Memory of a Suspect Only Once. 2021. Posted with permission
Strontium
No full text"Prepared by Syracuse Research Corporation under contract no. 205-1999-00024; prepared for U.S. Dept. of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry."Chemical manager(s)/author(s): Alfred F. Dorsey, ATSDR, Division of Toxicology, Atlanta, GA; Margaret E. Fransen, Gary L. Diamond, Richard J. Amata, Syracuse Research Corporation, North Syracuse, NY.Includes bibliographical references (p. 277-365).205-1999-0002
Book Review: Challenges to Digital Forensic Evidence
No full textCohen, F. (2008). Challenges to Digital Forensic Evidence. Livermore, CA: Fred Cohen & Associates. 129 pages, ISBN: 1-878109-41-3, US$39.Reviewed by Gary C. Kessler ([email protected])This book is about evidence gleaned as the result of the digital forensics process and providing expert testimony about that evidence. I am always suspicious when someone self-proclaims themselves as an "expert" although all authors are doing just that, at least by inference. Readers who are familiar with the author, Fred Cohen, or his large body of published works will know that he neither proclaims his expertise quietly nor inaccurately. Indeed, Cohen is an ideal person to weigh in on the topic of suitability and malleability of information acquired from computers and about providing testimony about that information and the process with which it was found.(see PDF for full review)</p
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