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Search Results: 1 - 10 of 7848 matches for " Hans Lingfors "
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Lifestyle changes in coronary heart disease—Effects of cardiac rehabilitation programs with focus on intensity, duration and content—A systematic review  [PDF]
Camilla Strid, Hans Lingfors, Bengt Fridlund, Jan M?rtensson
Open Journal of Nursing (OJN) , 2012, DOI: 10.4236/ojn.2012.24060
Abstract: Background: Although coronary heart disease (CHD) is the most common cause of death worldwide the literature shows a wide variation in the arrangement of cardiac rehabilitation and achieved lifestyle changes. Aim: The purpose of this study was to evaluate the effects of intensity (number of patient follow-ups), duration (length of intervention) and content in cardiac rehabilitation programs (CRP) regarding lifestyle changes in patients with CHD. Method: A systematic literature review of articles published in the databases PubMed and CINAHL between 1990 and 2007 was conducted. This resulted in 1120 hits of which 25 articles finally met the set criteria for inclusion. Results: The majority of significant positive results on lifestyle factors were shown among the studies describing high intensity and long duration. Included studies showed a wide variation in content, but four different interventions (informative content, educational content, practical content, behavioral and self care-oriented content) emerged. The group of studies which contained all four interventions focused on most lifestyle factors and achieved the most significant positive results. Conclusion: This systematic literature review shows that CRP should include high intensity, long duration and an intervention content covering information, knowledge, practical training, self care-activity and behavior changes in order to achieve effect on all four lifestyle factors of diet, physical activity and exercise, smoking and stress. Lifestyle changes can be reached in less lifestyle factors, with a longer duration and a variation of intensity of contacts but in combining with an informative and educational content with an additional content of a practical nature or self activity.
Lifestyle, Biological Risk Markers, Morbidity and Mortality in a Cohort of Men 33 - 42 Years Old at Baseline, after 24-Year Follow-Up of a Primary Health Care Intervention  [PDF]
Lars-G?ran Persson, Hans Lingfors, Mats Nilsson, Sigvard M?lstad
Open Journal of Preventive Medicine (OJPM) , 2015, DOI: 10.4236/ojpm.2015.53011
Abstract: Objective: To study changes in lifestyle and biological risk markers in a 24-year follow-up study, and occurrences of cardiovascular diseases (CVD), cancer and total mortality from official registers. Design: A 24-year follow-up survey and register study of a cohort of men 33 - 42 years old, examined with a health profile at baseline. With the health profile based on lifestyle, biological risk markers, self-rated mental stress and mental health, the men were separated in different risk groups. Setting: Primary health care center of Habo in Sweden. Subjects: All 757 men, 33 - 42 years old, and living in the community of Habo in Sweden in 1985. Main Outcome Measures: Lifestyle, biological risk markers, morbidity from CVD and cancer, and total mortality. Results: Smoking and physical activity decreased during follow-up time while alcohol consumption increased. Biological risk markers, except diastolic blood pressure, deteriorated significantly with age. Based on three- lifestyle groups, 16 % of the men had a more favorable lifestyle and 19% had a less favorable life-style at follow-up compared with baseline. The men, who had been classified as high-risk, based on the health profile at baseline, had a significantly higher incidence of CVD and cancer in the register study compared to men in a low-risk group. The baseline non-participant group had a significantly higher incidence of CVD and a higher mortality compared to the low-risk group. Conclusion: A health profile with a combination of lifestyle factors and biological risk markers can already at the age of 33 - 42 years predict incidence of CVD and cancer on group level among men after 24 years.
Network Economies for the Internet-Application Models  [PDF]
Hans Gottinger
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.34042
Abstract: We propose a decentralized model of network and server economies, where we show efficient QoS (Quality of Service) provisioning and Pareto allocation of resources (network and server resources) among agents and suppliers, which are either network routers or servers (content providers). Specifically, it is shown 1) how prices for resources are set at the suppliers based on the QoS demands from the agents and 2) how dynamic routing algorithms and admission control mechanisms based on QoS preferences emerge from the user classes for the network economy.
Fatal Complications and Early Death after Surgical Treatment of Lung Cancer in 2000 and 2010. A Population Based Study  [PDF]
Hans Rostad
Surgical Science (SS) , 2013, DOI: 10.4236/ss.2013.41019
Abstract:

In the year 2000 lung cancer was operated in 349 patients in Norway, in 2010 the number was 461. In the first period fatal surgical hemorrhage occurred in eight patients, in four of them peroperatively. Postoperative hemorrhage occurred in four patients in the year 2000 and in two in 2010. Ten patients died intra- or postoperatively in the two periods which is a mortality rate within 30 days after surgery of 4.3% in the first and 1.1% in the second period. Pneumonectomy was performed in 34 patients in 2000 and eight in 2010, respectively. Altogether 19 patients died within six months after surgery without having experienced surgical complications. Pneumonectomy should not be performed in elderly and debilitated persons.

On the Foundations of Guidelines for Health Economic Assessment  [PDF]
Hans Keiding
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.45004
Abstract:

In recent years, increased attention has been given to guidelines for cost-effectiveness analysis of medical interventions, and some of these guidelines (such as NICE [1]) have become rather influential. In the paper, we present a model of retrieving and processing information to be used for the study of guidelines and their use. Our main result, which relies on a version of the theorem of Blackwell [2], shows that in cases where there are sufficiently many decisions to be made on the basis of the information obtained, there can be no other objective ranking of methods than the trivial one ranking more information is higher than less information. In our context, this means that guidelines may have administrative advantages but cannot be considered as a scientifically based approach to better decision making.

The Market for Firms: Market Signaling and Overpricing  [PDF]
Jerome Davis, Hans Keiding
Technology and Investment (TI) , 2010, DOI: 10.4236/ti.2010.13024
Abstract: In this paper, the pricing and sale of firms is approached from the owners’ point of view. It is shown that there are very strong ex ante owner incentives to set prices of firm products or services below their short- term profit maximizing levels, since low prices signal low costs and as a consequence a higher sales value of the firm. Buyers take this signaling into consideration, but irrespective of their countermoves, the equilib- rium result may be a lowering of ex ante product prices, and an ex post market overvaluation of the firm. This model is utilized to suggest possible explanations to one of the more puzzling initial public offer (IPO) phenomena: the long run underperformance of IPO equities.
Deposition of charged nano-particles in the human airways including effects from cartilaginous rings  [PDF]
Hans O. Akerstedt
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.310113
Abstract: This paper presents a numerical study of the deposition of spherical charged nano-particles caused by convection, Brownian diffusion and electrostatics in a pipe with a cartilaginous ring structure. The model describes the deposition of charged particles in the different generations of the tracheobronchial tree of the human lung. The upper airways are characterized by a certain wall structure called cartilaginous rings which modify the particle deposition when compared to an airway with a smooth wall. The problem is defined by solving Naver-Stokes equations in combination with a convective-diffusion equation and Gauss law for electrostatics. Three non- dimensional parameters describe the problem, the Peclet number Pe = 2ūa/D , the Reynolds number Re = ūa/v and an electrostatic parameter α=α2c0q2/(4ε0κT) . Here U is the mean velocity, a the pipe radius and D the diffusion coefficient due to Brownian motion given by D=κTCu/3πμd , where Cu is the Cunningham-factor Cu=1+λ/d(2.34+1.05exp(-0.39d/λ)) Here d is the particle diameter and λ the mean free path of the air molecules. Results are provided for generations G4-G16 of the human airways. The electrostatic parameter is varied to model different concentrations and charge numbers.
Using Insulation in China’s Buildings: Potential for Significant Energy Savings and Carbon Emission Reductions  [PDF]
Guoliang Liu, Hans Liu
Low Carbon Economy (LCE) , 2011, DOI: 10.4236/lce.2011.24027
Abstract: Most old residential and commercial buildings in China are not insulated or not to new standards. This is true even in regions with very cold winters or regions with very hot summers. The insulation in new buildings is very poor relative to North American standards. However, insulating the exterior walls, attic roofs, and foundation walls to new standards of buildings in China would reduce the need for heating and air conditioning, and thus would save roughly 200 million tons of coal each year. This in turn would lead to a reduction in CO2 emissions of about 510 million tons per year, which is equal to about 8.4% of China’s total carbon emissions in 2006. The use of insulation in buildings will help homeowners save money, help China save energy and help the environment all at the same time. Insulation will provide a continued payback to the homeowner, not only in dollars and cents, but also by providing a more enjoyable and comfortable living environment for many years.
Network Economies for the Internet  [PDF]
Hans W. Gottinger
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.34053
Abstract: The article has been retracted due to the investigation of complaints received against it. The Editorial Board found that substantial portions of the text came from other published papers. The scientific community takes a very strong view on this matter, and the Modern Economy treats all unethical behavior such as plagiarism seriously. This paper published in Vol.3 No.4 408-423, 2012, has been removed from this site.
Photons Are EM Energy Superpositioned on TEM Waves  [PDF]
Hans W. Giertz
Open Journal of Microphysics (OJM) , 2013, DOI: 10.4236/ojm.2013.33013
Abstract: The study displays that TEM waves (e.g. radio waves, light) consist of low frequency plane TEM waves where the radio frequency energy or light energy is superpositioned on these low frequency TEM waves. The superpositioned energy can be discrete and where its frequency ν determines its energy hv and where this superpositioned energy hv is the photon. The study shows that photons and TEM waves are described by the laws of electromagnetism. Hence, there is a duality between the photon and the TEM wave and also a duality between electromagnetism and quantum theory in this case. The low frequency plane TEM waves originate from a singularity in universe and have been described earlier. The study describes how energy from a generator, from light bulbs and radio antennas is superpositioned on low frequency TEM waves, resulting in medium frequency TEM waves, radio waves and light. The study displays that light from the sun consists of light energy superpositioned on low frequency TEM waves. The study describes methods enabling measurement of the low frequency plane TEM waves and the superpositioned energy.
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