The Practice of Cloud System Administration, Volume 2 focuses on today's fastest-growing areas of system administration: cloud computing and DevOps. For the first time, it brings together comprehensive knowledge and best practices for administering systems in the age of cloud computing, and for architecting, scaling, and operating services that perform reliably and well. The new companion volume to our best-selling Practice of System and Network Administration, it offers expert coverage of these and many other crucial topics.
With 28 new chapters, the third edition of The Practice of System and Network Administration innovates yet again! Revised with thousands of updates and clarifications based on reader feedback, this new edition also incorporates DevOps strategies even for non-DevOps environments. Whether you use Linux, Unix, or Windows, this new edition describes the essential practices previously handed down only from mentor to protégé. This wonderfully lucid, often funny cornucopia of information introduces beginners to advanced frameworks valuable for their entire career, yet is structured to help even experts through difficult projects. Other books tell you what commands to type. This book teaches you the cross-platform strategies that are timeless! DevOps techniques: Apply DevOps principles to enterprise IT infrastructure, even in environments without developers Game-changing strategies: New ways to deliver results faster with less stress Fleet management: A comprehensive guide to managing your fleet of desktops, laptops, servers and mobile devices Service management: How to design, launch, upgrade and migrate services Measurable improvement: Assess your operational effectiveness; a forty-page, pain-free assessment system you can start using today to raise the quality of all services Design guides: Best practices for networks, data centers, email, storage, monitoring, backups and more Management skills: Organization design, communication, negotiation, ethics, hiring and firing, and more Have you ever had any of these problems? Have you been surprised to discover your backup tapes are blank? Ever spent a year launching a new service only to be told the users hate it? Do you have more incoming support requests than you can handle? Do you spend more time fixing problems than building the next awesome thing? Have you suffered from a botched migration of thousands of users to a new service? Does your company rely on a computer that, if it died, can’t be rebuilt? Is your network a fragile mess that breaks any time you try to improve it? Is there a periodic “hell month” that happens twice a year? Twelve times a year? Do you find out about problems when your users call you to complain? Does your corporate “Change Review Board” terrify you? Does each division of your company have their own broken way of doing things? Do you fear that automation will replace you, or break more than it fixes? Are you underpaid and overworked? No vague “management speak” or empty platitudes. This comprehensive guide provides real solutions that prevent these problems and more!
Background: Appetite is an important component in nutrition for maintaining the food intake needed by the body. Decreased appetite is a common clinical problem in patients with heart failure. It has a negative impact on food intake and possibly on malnutrition and health outcomes. There is a lack of evidence on how to assess appetite in heart failure. Furthermore, there are knowledge gaps about factors associated with appetite and which role appetite plays for health status in heart failure. Aim: The overall aim of the thesis was to investigate appetite in patients with heart failure. Four studies were conducted with the goal to evaluate the psychometric properties of the Council on Nutrition Appetite Questionnaire (CNAQ) (I) and to explore the prevalence of decreased appetite and related factors associated with appetite in patients with heart failure (II-IV). Methods: A multicenter study was conducted in three outpatient heart failure clinics in the center of Sweden during 2009-2012. Data were collected through a baseline measurement (I-IV) and an 18-month follow-up (IV). The first study was a psychometric evaluation study (I), while the other studies had an observational cross-sectional design (II-III) and an observational prospective design (IV). One hundred and eighty-six patients diagnosed with heart failure and experiencing heart failure symptoms participated at baseline. At the 18-month follow-up study (IV), one hundred and sixteen participants from the baseline participated. Data were collected from medical records (pharmacological treatment, comorbidity, left ventricle ejection fraction, time of diagnosis), self-reported questionnaires (demographic background data, appetite, symptoms of depression, health status, sleep, self-reported physical activity), objective measurements (anthropometric assessment of body size, blood samples, six minutes’ walk test, and physical activity measured with an actigraph) and clinical assessment (New York Heart Association (NYHA) functional classification, and cognitive assessment). The main outcome variables included appetite (I, II and IV) and health status (III). Descriptive and inferential statistics were used in the studies (I-IV). Results: The majority of the participants had moderate heart failure symptoms, i.e., NYHA class II (n=114, 61%). Most of the participants were men (n=130, 70%). Mean age was 70,7 years, (SD=11,0), and mean BMI was 28.7 (SD=5.3). The CNAQ showed acceptable psychometric properties for assessing appetite in patients with heart failure (I). This thesis shows that 38% of the participants experienced an appetite level that put them at risk of weight loss (I). It was shown that factors such as biological, medical, psychological (II) and physical activity/exercise capacity (IV) are associated with appetite. Also, appetite was associated with impaired health status. However, this association was found to be moderated by symptoms of depression (III). Neither appetite nor physical activity changed during the 18-month follow-up (IV). Conclusion: Decreased appetite is a serious phenomenon that needs attention in the care of patients with heart failure. Health care professionals can now use a validated and simple appetite instrument to assess appetite in heart failure. In addition, attention should be paid to elderly patients and those who have symptoms of depression, sleep problems, impaired cognitive function and impaired physical activity, as well as to patients on suboptimal medical treatment. Higher appetite was shown to contribute to a better health status, but this was only evident in patients without symptoms of depression. Therefore, special attention should be paid to symptoms of depression, as this risk factor affected the association between appetite and health status. This thesis enhances the understanding of the magnitude of the problem with decreased appetite in heart failure both in numbers and factors. New priorities in nutrition care and new ideas can be established, both in practice and in research, in order to improve a nutrition care that is vital for patients with heart failure.
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