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Full-Text Articles in Life Sciences
Individual Characteristics And Their Effect On Predicting Mu Rhythm Modulation, Adriane Randolph, Melody Jackson, Saurav Karmakar
Individual Characteristics And Their Effect On Predicting Mu Rhythm Modulation, Adriane Randolph, Melody Jackson, Saurav Karmakar
Adriane B. Randolph
Brain-computer interfaces (BCIs) offer users with severe motor disabilities a nonmuscular input channel for communication and control but require that users achieve a level of literacy and be able to harness their appropriate electrophysiological responses for effective use of the interface. There is currently no formalized process for determining a user's aptitude for control of various BCIs without testing on an actual system. This study presents how basic information captured about users may be used to predict modulation of mu rhythms, electrical variations in the motor cortex region of the brain that may be used for control of a BCI. …
Optically Stimulated Luminescence (Osl) Dating Of Perenially Frozen Deposits In North-Central Siberia: Osl Characteristics Of Quartz Grains And Methodological Considerations Regarding Their Suitability For Dating, Lee Arnold, Richard Roberts
Optically Stimulated Luminescence (Osl) Dating Of Perenially Frozen Deposits In North-Central Siberia: Osl Characteristics Of Quartz Grains And Methodological Considerations Regarding Their Suitability For Dating, Lee Arnold, Richard Roberts
Richard G Roberts
Optically stimulated luminescence (OSL) dating of coarse-grained quartz is increasingly being used as the main chronological tool in late Quaternary palaeoenvironmental reconstructions of Siberia. However, relatively little information has been published on the suitability of OSL dating for the various types of perennially frozen sediments found in this region. Here we provide a systematic examination of the quartz luminescence characteristics of 21 perennially frozen samples from the Taimyr Peninsula and adjacent coastal lowlands of north-central Siberia, and discuss their implications for the reliability of single-grain and multi-grain OSL chronologies in such contexts. The results of this study suggest that the …
Development Of The Sar Tt-Osl Procedure For Dating Middle Pleistocene Dune And Shallow Marine Deposits Along The Southern Cape Coast Of South Africa, Zenobia Jacobs, Richard Roberts, Terry Lachlan, Panagiotis Karkanas, Curtis Marean, David Roberts
Development Of The Sar Tt-Osl Procedure For Dating Middle Pleistocene Dune And Shallow Marine Deposits Along The Southern Cape Coast Of South Africa, Zenobia Jacobs, Richard Roberts, Terry Lachlan, Panagiotis Karkanas, Curtis Marean, David Roberts
Richard G Roberts
Optically stimulated luminescence (OSL) dating is now commonly used to estimate the depositional age of Quaternary landforms along the southern Cape coast of South Africa. Due to the early onset of dose saturation in the quartz-rich sediments from this region, determining the age of deposits much older than the last three glacio-eustatic sea-level high stands has been a challenge. In this study, we explored the feasibility of using the thermally-transferred OSL (TT-OSL) dating method to obtain ages for aeolian and shallow marine deposits at three different localities that hold promise to further illuminate the long and complex Late Quaternary sea-level …
Middle Paleolithic Occupation On A Marine Isotope Stage 5 Lakeshore In The Nefud Desert, Saudi Arabia, Michael Petraglia, Abdullah Alsharekh, Remy Crassard, Nick Drake, Huw Groucutt, Adrian Parker, Richard Roberts
Middle Paleolithic Occupation On A Marine Isotope Stage 5 Lakeshore In The Nefud Desert, Saudi Arabia, Michael Petraglia, Abdullah Alsharekh, Remy Crassard, Nick Drake, Huw Groucutt, Adrian Parker, Richard Roberts
Richard G Roberts
No abstract provided.
Dirt, Dates And Dna:Osl And Radiocarbon Chronologies Of Perenially Frozen Sediments In Siberia, And Their Implications For Sedimentary Ancient Dna Studies, Lee Arnold, Richard Roberts, Ross Macphee, James Haile, Fiona Brock, Per Moller, Duane Froese, Alexei Tikhonov, Allan Chivas, M. Thomas Gilbert, Eske Willerslev
Dirt, Dates And Dna:Osl And Radiocarbon Chronologies Of Perenially Frozen Sediments In Siberia, And Their Implications For Sedimentary Ancient Dna Studies, Lee Arnold, Richard Roberts, Ross Macphee, James Haile, Fiona Brock, Per Moller, Duane Froese, Alexei Tikhonov, Allan Chivas, M. Thomas Gilbert, Eske Willerslev
Richard G Roberts
The sedimentary ancient DNA (sedaDNA) technique offers a potentially invaluable means of investigating species evolution and extinction dynamics in high-latitude environments. An implicit assumption of the sedaDNA approach is that the extracted DNA is autochthonous with the host deposit and that it has not been physically transported from older source deposits or reworked within the sedimentary profile by postdepositional mixing. In this paper we investigate whether these fundamental conditions are upheld at seven perennially frozen wetland sites across the Taimyr Peninsula and coastal lowlands of north-central Siberia. Optically stimulated luminescence (OSL) and radiocarbon (14C) dating are used to constrain the …
Late Acheulean Hominins At The Marine Isotope Stage 6/5e Transition In North-Central India, Michael Haslam, Richard Roberts, Ceri Shipton, J Pal, Jacqueline Fenwick, Peter Ditchfield, Nicole Boivin, A Dubey, M Gupta, Michael Petraglia
Late Acheulean Hominins At The Marine Isotope Stage 6/5e Transition In North-Central India, Michael Haslam, Richard Roberts, Ceri Shipton, J Pal, Jacqueline Fenwick, Peter Ditchfield, Nicole Boivin, A Dubey, M Gupta, Michael Petraglia
Richard G Roberts
Single-grain optically stimulated luminescence dating was applied to Late Quaternary sediments at two sites in the Middle Son Valley, Madhya Pradesh, India. Designated Bamburi 1 and Patpara, thesse sites contain Late Acheulean stone tool assemblages, which we associate with non-modern hominins. Age determinations of 140-120. ka place the formation of these sites at around the Marine Oxygen Isotope Stage 6-5 transition, placing them among the youngest Acheulean sites in the world. We present here the geochronology and sedimentological setting of these sites, and consider potential implications of Late Pleistocene archaic habitation in north-central India for the initial dispersal of modern …
Review And Critique Of The Quality Of Exercise Recommendations For Cancer Patients And Survivors, Nancy Humpel, Donald Iverson
Review And Critique Of The Quality Of Exercise Recommendations For Cancer Patients And Survivors, Nancy Humpel, Donald Iverson
Don C. Iverson
The benefit of exercise for cancer patients is starting to become recognized. The purposes of this paper were to review the literature to examine whether research findings are being converted into guidelines for patients and survivors and to examine the quality of evidence on which they were based. A computer search of major health databases was conducted for peer-reviewed literature and books on exercise and cancer, and an Internet search was conducted for cancer websites reporting any exercise guidelines/recommendations for cancer patients. Seven peer-reviewed articles, eight books and eight cancer websites were identified that suggested exercise guidelines for cancer patients …
Analysis Of The Costs Of A Large Prevention Trial, Nicole Urban, Steven Self, Larry Kessler, Ross Prentice, Maureen Henderson, Donald Iverson, Donovan Thompson, David Byar, William Insull, Sherwood Gorbach, C Clifford, Susan Goldman
Analysis Of The Costs Of A Large Prevention Trial, Nicole Urban, Steven Self, Larry Kessler, Ross Prentice, Maureen Henderson, Donald Iverson, Donovan Thompson, David Byar, William Insull, Sherwood Gorbach, C Clifford, Susan Goldman
Don C. Iverson
Total direct costs of the Women's Health Trial (WHT), alarge multicenter preventiontrial, were reduced by more than 50% by means of research costanalysis conducted during the trial design phase. The unit costs of specific trial activities were estimated so that total direct costs of the trial could be predicted from design parameters. The relative costs of screening, treatment, and follow-up, and the fixed costs associated with each clinical center in a multicenter preventiontrial were taken into account. Direct costs of the WHT were reduced from $195 million to $95 million by refinement of the trial protocol, selection of an efficient …
Research In School Health Education: A Needs Assessment, Lloyd Kolbe, Donald Iverson
Research In School Health Education: A Needs Assessment, Lloyd Kolbe, Donald Iverson
Don C. Iverson
No abstract provided.
Federal Data Bases For Health Education Research, Ronald Wilson, Donald Iverson
Federal Data Bases For Health Education Research, Ronald Wilson, Donald Iverson
Don C. Iverson
Described are some of the national health related databases which are useful in conducting health education research. Among areas covered by the projects are hypertension, myocardial infarction, neighborhood health centers, alcoholism, and over the counter drugs.
The Danger Of Applying Uniform Clincal Policies Across Populations: The Case Of Breast Cancer In American Indians, Paul Nutting, Ned Calonge, Donald Iverson, Larry Green
The Danger Of Applying Uniform Clincal Policies Across Populations: The Case Of Breast Cancer In American Indians, Paul Nutting, Ned Calonge, Donald Iverson, Larry Green
Don C. Iverson
OBJECTIVES. This study examined the implications of annual screening mammography for cost and mortality in American Indian populations with differing baseline breast cancer rates. METHODS. A decision tree compared annual screening mammography and screening clinical breast examination with referral for diagnostic mammography when appropriate. The decision tree was constructed to examine the effect of different base-line cancer rates, stage at diagnosis, and stage-specific survival. Outcomes included 5-year relative survival, deaths prevented at 5 years, cost per death prevented, and total costs. RESULTS. The findings suggest that the total cost of breast cancer is 3.6 times higher with the screening mammography …
Workgroup Iv: Public Education. Uicc International Workshop On Facilitating Screening For Colorectal Cancer, Oslo, Norway 2002, R Hiatt, J Wardle, S Vernon, J Austoker, L Bistanti, S Fox, R Gnauck, Donald Iverson
Workgroup Iv: Public Education. Uicc International Workshop On Facilitating Screening For Colorectal Cancer, Oslo, Norway 2002, R Hiatt, J Wardle, S Vernon, J Austoker, L Bistanti, S Fox, R Gnauck, Donald Iverson
Don C. Iverson
The Workgroup on public education was brought together to formulate an international perspective on public education for the important public health challenge of increasing colorectal cancer screening. The focus of the group did not include professional education, which is an important channel for public education, since another Workgroup covered that topic. The results of the Workgroup represent an expression of expert opinion and did not include a comprehensive review of the literature. However, the recommendations for further research may stimulate a more in-depth examination of the literature in some areas and generate ideas for investigation.
A Link Between Chronic Sleep Restriction And Obesity: Methodological Considerations, Christopher Magee, Donald Iverson, Xu-Feng Huang, Peter Caputi
A Link Between Chronic Sleep Restriction And Obesity: Methodological Considerations, Christopher Magee, Donald Iverson, Xu-Feng Huang, Peter Caputi
Don C. Iverson
Emerging evidence suggests that chronicsleeprestriction contributes to obesity. Targeting short sleep duration may therefore offer a novel and effective method of preventing and treating obesity. However, this area of research is only in its infancy, and a complete understanding of how chronicsleeprestriction and obesity are linked is currently lacking. The aim of this paper is to briefly review epidemiological evidence for an association between chronicsleeprestriction and obesity in adults, and outline the key methodological limitations of these studies. Particular attention is paid to the methods used to measure sleep and obesity, as well as the need to control for potential …
Involving Providers And Patients In Cancer Control And Prevention Efforts. Barriers To Overcome, Donald Iverson
Involving Providers And Patients In Cancer Control And Prevention Efforts. Barriers To Overcome, Donald Iverson
Don C. Iverson
Although progress has been made in providing cancer prevention and control services to the population, there remain sizeable segments of the population that are either uninvolved or underinvolved with national and state efforts. One method of reaching most of the population, including those segments currently not involved or underinvolved, is through primary care clinicians. Effective, albeit imperfect, strategies to increase the involvement of primary care clinicians in cancer prevention and control are available, and there is emerging evidence that these strategies are making a difference. Unfortunately, the progress made to date is at risk of being lost because of economic …
What Australians Know And Believe About Bird Flu: Results Of A Population Telephone Survey, Sandra Jones, Donald Iverson
What Australians Know And Believe About Bird Flu: Results Of A Population Telephone Survey, Sandra Jones, Donald Iverson
Don C. Iverson
The avian influenza A (A/H5N1) virus has attracted the attention of governments and health organizations throughout the world because of its pandemic potential. Despite the emerging nature of A/H5N1, there is limited research on public knowledge and perceptions of this disease. This study is based on a computer-assisted telephone interviewing survey conducted in May 2006 to determine the Australian publics knowledge of A/H5N1, their willingness to engage in preventive behaviors, and their acceptance of potential messages for communication campaigns. Awareness and concern about bird flu is low (lower than a recent survey of U.S. residents). There appears to be widespread …
Worksite Health Promotion In Colorado, Mary Davis, Karen Rosenberg, Donald Iverson, Thomas Vernon, Jeff Bauer
Worksite Health Promotion In Colorado, Mary Davis, Karen Rosenberg, Donald Iverson, Thomas Vernon, Jeff Bauer
Don C. Iverson
No abstract provided.
Verification Of Data Reported By Practices For A Study Of Spontaneous Abortion, L Green, F Reed, R Miller, Donald Iverson
Verification Of Data Reported By Practices For A Study Of Spontaneous Abortion, L Green, F Reed, R Miller, Donald Iverson
Don C. Iverson
Little is known about the accuracy of data reported in practice based primary care research. The Ambulatory Sentinel Practice Network (ASPN) undertook a 100% audit of 226 patients included in a study of spontaneous abortion (SAB). The audit was conducted to assess the feasibility of conducting audits in primary care research networks dispersed over large geographic areas, verify that patients met inclusion criteria, and assess the frequency of reporting errors using the medical record as a standard. Of the originally reported SABs, 24% could not be verified. The overall error rate was 4.5%, a total of 106 errors out of …
Physician Communication Skills: Results Of A Survey Of General/Family Practitioners In Newfoundland, F Ashbury, Donald Iverson, Boris Kralj
Physician Communication Skills: Results Of A Survey Of General/Family Practitioners In Newfoundland, F Ashbury, Donald Iverson, Boris Kralj
Don C. Iverson
Purpose: To describe the attitudes related to communication skills, confidence in using commnication skills, and use of communication skills during the physician-patient encounter among a population-based sample of family physicians. Procedures: A mailed survey, distributed to all family physicians and general practitioners currently practicing in Newfoundland. The questionnaire was designed to collect data in five general areas participant demographics, physician confidence in using specific communication strategies, perceived adequacy of time spent by physicians with their patients, physician use of specific communication strategies with the adult patients they saw in the prior week, and physician use of specific communication strategies during …
Feasibility Studies Of Low-Fat Diet To Prevent Or Retard Breast Cancer, P Greenwald, C Clifford, R Butrum, Donald Iverson
Feasibility Studies Of Low-Fat Diet To Prevent Or Retard Breast Cancer, P Greenwald, C Clifford, R Butrum, Donald Iverson
Don C. Iverson
No abstract provided.
An Overview And Analysis Of The Health Style Campaign, Mary Davis, Donald Iverson
An Overview And Analysis Of The Health Style Campaign, Mary Davis, Donald Iverson
Don C. Iverson
In 1981, the Office of Health Information and Health Promotion of the U.S. Department of Health and Human Services launched a national health promotion media campaign titled Health Style. The purposes of the Health Style campaign were: (1) to increase public awareness of the effects of life-style on health; (2) to enable persons to assess which life-style changes would be most conducive to their health; (3) to stimulate information-seeking behavior and; (4) to foster the development of local health promotion activities and referral networks. The campaign was implemented in nine test communities across the United States. This article: (1) provides …
Toddler Milk Advertising In Australia: Infant Formula Advertising In Disguise?, Nina Berry, Sandra Jones, Donald Iverson
Toddler Milk Advertising In Australia: Infant Formula Advertising In Disguise?, Nina Berry, Sandra Jones, Donald Iverson
Don C. Iverson
The Marketing in Australia of Infant Formula: Manufacturers' and Importers' Agreement prevents manufacturers and importers from advertising infant formula. However, toddler milks, which share brand identities with infant formula, are advertised freely; and recent research suggests consumers fail to distinguish between advertising for infant formula and for toddler milk. This study examined whether Australian parents recalled having seen advertisements for 'formula'. Most respondents (66.8%) reported seeing an advertisement for infant formula, with those who had only seen non-retail advertising more than twice as likely to believe that they had seen such an advertisement as those who had only seen retail …
Preventing Hiv Infection Among Adolescents: Evaluation Of A School-Based Education Program, D Main, Donald Iverson, J Mcgloin, S Banspach, J Collins, D Rugg, Lloyd Kolbe
Preventing Hiv Infection Among Adolescents: Evaluation Of A School-Based Education Program, D Main, Donald Iverson, J Mcgloin, S Banspach, J Collins, D Rugg, Lloyd Kolbe
Don C. Iverson
Background. This article reports the results of the impact of aschool-based HIV prevention intervention on students′ knowledge, attitudes, and behavior related to HIV infection. Methods. Seventeen schools within six Colorado school districts were assigned to either intervention or comparison conditions. Students in 10 schools received a 15-session, skills-based HIV prevention curriculum implemented by trained teachers. A total of 2,844 students completed at least one survey during the study period; surveys were matched using demographic questions, yielding a cohort of 979 students who had baseline and 6-month follow-up data. Results. Intervention students exhibited greater knowledge about HIV and greater intent to …
Spontaneous Abortion In Primary Care: A Report From Aspn, L Green, L Becker, W Freeman, E Elliott, Donald Iverson, F Reed
Spontaneous Abortion In Primary Care: A Report From Aspn, L Green, L Becker, W Freeman, E Elliott, Donald Iverson, F Reed
Don C. Iverson
The Ambulatory Sentinel Practice Network (ASPN) conducted an observational study of usual primary care of spontaneous abortion (SAB). Forty-nine practices in 18 states and four Canadian provinces reported and audited 171 SABs. Contrary to recommendations in some texts, 40 percent were managed completely in the office and/or at home, and only 51 percent had a dilation and curettage (D&C). SABs occurring later in pregnancy were more likely to be managed in the emergency room/hospital, receive consultation, and have a D&C. Patients managed with D&C had a greater frequency of excessive blood loss at diagnosis, but otherwise they did not differ …
Implementing Comprehensive Health Education: Educational Innovations And Social Change, Lloyd Kolbe, Donald Iverson
Implementing Comprehensive Health Education: Educational Innovations And Social Change, Lloyd Kolbe, Donald Iverson
Don C. Iverson
The effectiveness of health education is ultimately determined by whether it is implemented, and how it is implemented. Although a given health education innovation may be designed and experimentally assessed to promote well-being with some measure of effectiveness and efficiency, the actual impact of the innovation will depend upon the manner in which it is disseminated, initiated, and maintained. The implementation of health education programs in schools or elsewhere is a function of the types of innovations available, certain characteristics of those innovations that influence their use, and the manner in which the innovations are brought into practice. This paper …
Utilizing A Health Behavior Model To Design Drug Education/Prevention Programs, Donald Iverson
Utilizing A Health Behavior Model To Design Drug Education/Prevention Programs, Donald Iverson
Don C. Iverson
The underlying philosophical and practical problems encountered when designing drug education/prevention programs are reviewed. The necessity for utilizing a health behavior model as the basis for any prevention program is discussed and the Health Belief Model is proposed as the model of choice. The Health Belief Model is described and its most relevant components are outlined. The drug education material and teaching methodology which complement the model are reviewed as well as specific suggestions regarding selection of the most appropriate material for inclusion in the program.
Sleep Quality, Fatigue And Physical Activity Following A Cancer Diagnosis, Nancy Humpel, Donald Iverson
Sleep Quality, Fatigue And Physical Activity Following A Cancer Diagnosis, Nancy Humpel, Donald Iverson
Don C. Iverson
Research on physical activity for cancer survivors suggests a relationship with improved quality of life. The aim of this study was to explore if there was also a relationship of physical activity with sleep difficulties and fatigue, common effects of cancer and its treatments. Recruitment was by posters and flyers in medical waiting rooms and by letter of invitation. Thirty-two breast and 59 prostate cancer survivors completed the questionnaire. Poor sleep quality was reported by 57.8%. A greater proportion of breast cancer (36.7%) than prostate cancer survivors (15.5%) reported poor sleep latency, and sleep disturbance (48.4% vs. 17.2%). The mean …
An Investigation Of The Dimensionality Of The Pittsburgh Sleep Quality Index In Australian Adults, Christopher Magee, Peter Caputi, Donald Iverson, Xu-Feng Huang
An Investigation Of The Dimensionality Of The Pittsburgh Sleep Quality Index In Australian Adults, Christopher Magee, Peter Caputi, Donald Iverson, Xu-Feng Huang
Don C. Iverson
The Pittsburgh Sleep Quality Index (PSQI) is widely used to assess subjective sleep quality in clinical and non-clinical settings. Although the PSQI is routinely scored to provide a single sleep quality factor, two recent studies suggest that multiple factor scoring methods could be more appropriate. As a consequence, the present study investigated for the dimensionality and factor structure of the PSQI in 364 Australian adults aged 18 to 59 years. The results demonstrate that two factor and three factor scoring models were favored statistically over the single factor model. These results add to recent findings and suggest that scoring the …
The Cumulative Impact And Associated Costs Of Multiple Health Conditions On Employee Productivity, Donald Iverson, Kate Lewis, Peter Caputi, Sascha Knospe
The Cumulative Impact And Associated Costs Of Multiple Health Conditions On Employee Productivity, Donald Iverson, Kate Lewis, Peter Caputi, Sascha Knospe
Don C. Iverson
Objective: This study investigates and provides comparative data on the relative contributions of multiple physical and psychological health conditions on work productivity. Methods: A total of 667 employees from the headquarters office of a multinational consumer goods manufacturing firm in Germany completed a purpose-designed self-report questionnaire addressing the presence of 13 common health conditions, and associated absenteeism and presenteeism. Adjustments for comorbidity and self-report bias were made using an innovative approach. Results: A total of 34.8% of participants experienced absenteeism and 78.4% experienced presenteeism for at least one health condition. The overall annualized productivity loss due to the 13 health …
The Effects Of An Education Intervention Program For Juvenile Drug Abusers And Their Parents, Donald Iverson, Stephen Jurs, Lawrence Johnson, Rita Rohen
The Effects Of An Education Intervention Program For Juvenile Drug Abusers And Their Parents, Donald Iverson, Stephen Jurs, Lawrence Johnson, Rita Rohen
Don C. Iverson
The Juvenile Intervention Program represents an attempt to intervene in the development of juvenile drug dependence. The program involves the early identification of juvenile drug abusers followed by the recruitment of the juveniles and their parents into the program. The program utilizes the principles of family involvement and peer pressure throughout the program, while the basis of the program involves the education of the participants in such areas as family architecture, family communication patterns and drug knowledge.
It's All Formula To Me: Women's Understandings Of Toddler Milk Ads, Nina Berry, Sandra Jones, Don Iverson
It's All Formula To Me: Women's Understandings Of Toddler Milk Ads, Nina Berry, Sandra Jones, Don Iverson
Don C. Iverson
This study utilised semi-structured interviews to investigate how women expecting a first baby perceived print advertisements for 'toddler milks' in order to determine whether they function as indirect advertising for infant and follow-on formula. Examination of the marketing literature, analysis of the advertisers' websites and the advertisements themselves provided sources of triangulation. Fifteen women expecting a first baby were recruited from antenatal classes conducted by staff of the Northern Sydney Central Coast Area Health Service. These respondents clearly understood toddler milk advertisements to be promoting a range of products that included infant and follow-on formula and accepted their claims quite …