Experimental Methods in IIR: The Tension between Rigour and Ethics in Studies Involving Users with Dyslexia

Designing user studies in the interactive information retrieval (IIR) paradigm on people with impairments may sometimes require different methodological considerations than for other users. Consequently, there may be a tension between what the community regards as being a rigorous methodology against what researchers can do ethically with their users. This paper discusses issues to consider when designing IIR studies involving people with dyslexia, such as sampling, informed consent and data collection. The conclusion is that conducting user studies on participants with dyslexia requires special considerations at all stages of the experimental design. The purpose of this paper is to raise awareness and understanding in the research community about experimental methods involving users with dyslexia, and addresses researchers, as well as editors and reviewers. Several of the issues raised do not only apply to people with dyslexia, but have implications when researching other groups, for instance elderly people and users with learning, cognitive, sensory or motor impairments

Lie algebra and invariant tensor technology for g2

Proceeding in analogy with su(n) work on lambda matrices and f- and d-tensors, this paper develops the technology of the Lie algebra g2, its seven dimensional defining representation gamma and the full set of invariant tensors that arise in relation thereto. A comprehensive listing of identities involving these tensors is given. This includes identities that depend on use of characteristic equations, especially for gamma, and a good body of results involving the quadratic, sextic and (the non-primitivity of) other Casimir operators of g2.Comment: 29 pages, LaTe

Results of post-test psychological examinations of the crewmen from the 90-day manned test of an advanced regenerative life support system

The following material presents the results of two temporally remote administrations of an identical projective personality assessment device (Rorschach Inkblot) using crew members aboard the 90-day test. The first administration took place during preselection crew psychodiagnostic testing in the period extending from mid-December 1969 through mid-January 1970. Second administration took place in late May and early June, 1971, approximately one year after termination of the test. During the 90-day program duration, the subjects participated in the crew training program, were selected and served as onboard crew during the 90-day test. The testing was undertaken in order to determine the character and extent of change (if any) in basic personality dynamics accompanying or caused by participation in the 90-day test program. Results indicate that significant personality changes occurred in three of the four onboard crew members. A detailed discussion of the results is provided. Objective scores which served as the basis for the discussion are presented in the Appendix

Why Local Authorities should prepare Food Brexit Plans

The UK’s food supply will be affected by Brexit whatever the outcome of the Parliamentary vote on the Draft Withdrawal Agreement. As the 29 March 2019 date for leaving the EU approaches, preparations to ensure we maintain a safe, adequate and sustainable food supply need to start urgently. Local Authorities (LAs) have a vital part to play in these preparations. More guidance, paying attention to the food specifics, is felt to be needed. LAs have a key role in the UK’s food system, with responsibilities including the enforcement of food safety and standards regulation, the control of imported food at ports and airports and the certification of foods for export. They also have unique knowledge of relevant local professionals, institutions, businesses and networks. This briefing aims to help Local Authorities prepare for Food Brexit. It shows why LAs should prepare Food Brexit Plans, and outlines five courses of action they could consider. The briefing recommends that Local Authorities: • Create Food Resilience Teams • Anticipate and reduce the impact of Food Brexit, particularly on SMEs • Narrow the information gap and treat the public openly and fairly • Prepare for public engagement • Be a local food voice so that central government knows the local realities

Sex Industry and Sex Workers in Nevada

Las Vegas has long been known as the symbolic center of the commercial sex industry. Nevada is host to the only legal system of prostitution in the United States. From the early legalization of quickie divorce and marriage to the marketing of its large resorts, sexuality has been a key component of Nevada’s tourist economy. If trends continue, for good or for ill, the sex industry will be an even larger part of the economy in the future. The sex industry refers to all legal and illegal adult businesses that sell sexual products, sexual services, sexual fantasies, and actual sexual contact for profit in the commercial marketplace. The sex industry encompasses an exceedingly wide range of formal and informal, legal and illegal businesses, as well as a wide range of individuals who work in and around the industry. This report will review the context in which sexually oriented commercial enterprises have flourished, discuss general trends in the Nevada sex industry, and make policy recommendations

The Thermal Decomposition of Some Polysiloxanes

There is an ever increasing demand for polymers and copolymers having high thermal and oxidative stability. Since the silicone industry began in 1931, silicone polymers have provided for a wide range of industrial needs as thermally stable oils, rubbers and resins. In recent years research has been carried out by a number of workers into the mechanism of breakdown processes in these materials in an attempt to bridge the gap between empirical knowledge and scientific understanding. The present work is aimed at supplementing information in the literature on the thermal breakdown of some linear polysiloxanes containing methyl or methyl and phenyl side groups. Brief notes on the history of silicones, on common nomenclature and on some aspects of the physical chemistry of silicon and its compounds are given in Chapter 1 and these are followed by a comprehensive review of the literature dealing with work related to the title of this thesis. Chapter 2 includes a list of sources for the chemicals used in this work, gives details of polymerisation techniques and summarises the apparatus and experimental techniques employed in this study. The first part deals with the thermal analysis techniques and the second part describes the techniques used to identify the degradation products both qualitatively and quantitatively. The thermal degradation of poly(dimethylsiloxane) is discussed in Chapter 3. The main products are cyclic siloxanes containing up to eighteen or more dimethylsiloxane units. The cyclic trimer, hexamethylcyclotrisiloxane is the major product. Methane is a product from samples degraded in the presence of base. In Chapter 4 the preparation and thermal properties of poly(methylphenylsiloxane) are discussed. The two isomeric forms of the cyclic siloxane trimer and the four forms of the cyclic tetramer have been shown to be the major products of degradation. Benzene is also formed. Several attempts to prepare high molecular weight samples of poly(diphenylsiloxane) are described in Chapter 5. These attempts were not successful. In Chapter 6 some preliminary studies on copolymers of poly(dimethyldiphenylsiloxane) are described. Although benzene is produced there is evidence that some diphenyl units remain intact and are incorporated into siloxane ring compounds which appear as degradation products

Gut motility and its control

The gastrointestinal tract is composed of smooth muscle arranged in two layers: longitudinal and circular. Although its activity is influenced by the autonomic nervous system, it is mainly under local reflex control mediated by an enteric nervous system and local hormones. The motility of the gastrointestinal tract has several different well-defined patterns. Its function is to move the gastrointestinal contents through the various phases of homogenization (mixing), digestion, absorption and elimination

Digestion and absorption

Carbohydrates are digested by salivary and pancreatic amylases to di-, tri- and oligosaccharides, and then to monosaccharides by enzymes on the wall of the small intestine to allow them to be absorbed. Proteins are absorbed as amino acids and small peptides that are broken down to amino acids within the cells. Monosaccharides and amino acids pass into the liver via the portal vein. Fats are digested and absorbed as free fatty acids and glycerides that are then mostly reconstituted as triglycerides in the mucosal cells of the small intestine. They combine with phospholipids and a protein to form chylomicrons, which pass via the lymphatics and the thoracic duct into the systemic circulation. Fatty acids are re-esterified and stored as triglycerides in adipose tissue or oxidized for energy. Water is passively absorbed due to the osmotic gradient that results mainly due to the active absorption of sodium ions

Poliomyelitis in Malta, 1950-1951: An Epidemiological and Clinical Study of the Disease as it Affected the Armed Services

The basis of the treatment of the acute stage of poliomyelitis is presented and the meaning of muscle spasm is discussed. The results of treatment are shown and roughly compared with those of other epidemics

Alien Registration- Macfarlane, Robert G. (Mars Hill, Aroostook County)

https://digitalmaine.com/alien_docs/33984/thumbnail.jp