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https://www.readbyqxmd.com/read/28926952/medium-access-control-protocols-for-cognitive-radio-ad-hoc-networks-a-survey
#1
REVIEW
Mahdi Zareei, A K M Muzahidul Islam, Sabariah Baharun, Cesar Vargas-Rosales, Leyre Azpilicueta, Nafees Mansoor
New wireless network paradigms will demand higher spectrum use and availability to cope with emerging data-hungry devices. Traditional static spectrum allocation policies cause spectrum scarcity, and new paradigms such as Cognitive Radio (CR) and new protocols and techniques need to be developed in order to have efficient spectrum usage. Medium Access Control (MAC) protocols are accountable for recognizing free spectrum, scheduling available resources and coordinating the coexistence of heterogeneous systems and users...
September 16, 2017: Sensors
https://www.readbyqxmd.com/read/28925068/when-and-how-can-nephrologists-treat-hepatitis-c-virus-infection-in-dialysis-patients
#2
REVIEW
Maya I Davis, Donald F Chute, Raymond T Chung, Meghan E Sise
Hepatitis C virus (HCV) infection, a major cause of end-stage liver disease, is a common comorbidity in patients on dialysis and causes increased morbidity and mortality. Historically HCV has been extremely difficult to cure with interferon and ribavirin-based therapies, which are also associated with significant side effects, and few dialysis patients ever received HCV treatment. However, in the last 4 years, interferon-free direct-acting antiviral therapies have been approved, and several combinations have been studied in dialysis patients...
September 18, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28923125/why-we-write-nuclear-history
#3
David K Hecht
Nuclear history always compels. Scholars (and readers) can immerse themselves in the existential threat posed by the atomic bomb and its successor weapons, the tantalizing prospect of carbon-free energy, or the study of a natural phenomenon deeply at odds with our everyday experience of the world. There is thus always something profound at stake when we write nuclear history - be it physical, economic or intellectual. And while it may seem that the end of the Cold War should have diminished the academic attention accorded to the subject, it actually just allowed the historiography to evolve...
September 2017: British Journal for the History of Science
https://www.readbyqxmd.com/read/28918849/are-we-catching-women-in-the-safety-net-colorectal-cancer-outcomes-by-gender-at-a-safety-net-hospital
#4
Alison R Althans, Justin T Brady, Deborah S Keller, Sharon L Stein, Scott R Steele, Melissa Times
BACKGROUND: Our goal was to evaluate presentation and outcomes for colorectal cancer across gender in a safety net hospital (SNH). METHODS: An institutional Tumor Registry was reviewed for colorectal cancer resections 12/2009-2/2016. Patients were stratified into male and female cohorts. The main outcome measures were stage at presentation and oncologic outcomes across gender. RESULTS: 170 women (48.6%) and 180 men (51.4%) were evaluated; 129 (84...
October 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28914112/socioeconomic-differences-in-childhood-vaccination-in-developed-countries-a-systematic-review-of-quantitative-studies
#5
Aurélie Bocquier, Jeremy Ward, Jocelyn Raude, Patrick Peretti-Watel, Pierre Verger
Introduction The reasons for vaccine hesitancy and its relation to individual socioeconomic status (SES) must be better understood. Areas covered This review focused on developed countries with programs addressing major financial barriers to vaccination access. We systematically reviewed differences by SES in uptake of publicly funded childhood vaccines and in cognitive determinants (beliefs, attitudes) of parental decisions about vaccinating their children. Using the PRISMA statement to guide this review, we searched three electronic databases from January 2000 through April 2016...
September 15, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28911813/functional-dynamics-in-cyclic-nucleotide-signaling-and-amyloid-inhibition
#6
REVIEW
Bryan VanSchouwen, Rashik Ahmed, Julijana Milojevic, Giuseppe Melacini
It is now established that understanding the molecular basis of biological function requires atomic resolution maps of both structure and dynamics. Here, we review several illustrative examples of functional dynamics selected from our work on cyclic nucleotide signaling and amyloid inhibition. Although fundamentally diverse, a central aspect common to both fields is that function can only be rationalized by considering dynamic equilibria between distinct states of the accessible free energy landscape. The dynamic exchange between ground and excited states of signaling proteins is essential to explain auto-inhibition and allosteric activation...
September 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28903886/patient-privacy-in-the-era-of-big-data
#7
Mehmet Kayaalp
Privacy was defined as a fundamental human right in the Universal Declaration of Human Rights at the 1948 United Nations General Assembly. However, there is still no consensus on what constitutes privacy. In this review, we look at the evolution of privacy as a concept from the era of Hippocrates to the era of social media and big data. To appreciate the modern measures of patient privacy protection and correctly interpret the current regulatory framework in the United States, we need to analyze and understand the concepts of individually identifiable information, individually identifiable health information, protected health information (PHI), and de-identification...
September 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28898194/correlate-a-pacs-and-ehr-integrated-tool-leveraging-natural-language-processing-to-provide-automated-clinical-follow-up
#8
Mark D Kovacs, Joseph Mesterhazy, David Avrin, Thomas Urbania, John Mongan
A major challenge for radiologists is obtaining meaningful clinical follow-up information for even a small percentage of cases encountered and dictated. Traditional methods, such as keeping medical record number follow-up lists, discussing cases with rounding clinical teams, and discussing cases at tumor boards, are effective at keeping radiologists informed of clinical outcomes but are time intensive and provide follow-up for a small subset of cases. To this end, the authors developed a picture archiving and communication system-accessible electronic health record (EHR)-integrated program called Correlate, which allows the user to easily enter free-text search queries regarding desired clinical follow-up information, with minimal interruption to the workflow...
September 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28893341/validation-of-a-survey-to-examine-drinking-water-access-practices-and-policies-in-schools
#9
Amelie A Hecht, Jacob M Grumbach, Karla E Hampton, Kenneth Hecht, Ellen Braff-Guajardo, Claire D Brindis, Charles E McCulloch, Anisha I Patel
OBJECTIVE: Ensuring ready access to free drinking-water in schools is an important strategy for prevention of obesity and dental caries, and for improving student learning. Yet to date, there are no validated instruments to examine water access in schools. The present study aimed to develop and validate a survey of school administrators to examine school access to beverages, including water and sports drinks, and school and district-level water-related policies and practices. DESIGN: Survey validity was measured by comparing results of telephone surveys of school administrators with on-site observations of beverage access and reviews of school policy documents for any references to beverages...
September 12, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28893075/classroom-acoustics-as-a-consideration-for-inclusive-education-in-south-africa
#10
Coralie Van Reenen, Catherine Karusseit
BACKGROUND: It can hardly be disputed that a school environment should be conducive or, at the very least, not prohibitive to effective learning. The provision of fair, equal and barrier-free access to education is referred to as inclusive education. South Africa supports a policy of inclusive schooling, striving to accommodate all children, including those with disabilities, in mainstream schools. This article sets out to prove that noise control in classrooms is a relevant, yet neglected, aspect of inclusive classroom design in South Africa and requires specific attention...
September 8, 2017: South African Journal of Communication Disorders. die Suid-Afrikaanse Tydskrif Vir Kommunikasieafwykings
https://www.readbyqxmd.com/read/28885749/paediatric-food-induced-anaphylaxis-hospital-presentations-in-new-zealand
#11
Sophie Speakman, Bridget Kool, Jan Sinclair, Penny Fitzharris
AIM: Globally, rates of paediatric food-induced anaphylaxis (FIA) are increasing. Little data is available regarding the epidemiology of FIA among New Zealand (NZ) children. This study investigated the incidence of paediatric (0-14 years) FIA hospital presentations in NZ over a 10-year period. METHODS: Ministry of Health public hospital discharge data from 2006 to 2015 were analysed using FIA-related International Classification of Diseases codes (T78.0 - anaphylactic shock due to adverse food reaction and T78...
September 8, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28881222/immune-checkpoint-blockade-for-unresectable-or-metastatic-uveal-melanoma-a-systematic-review
#12
REVIEW
Markus V Heppt, Theresa Steeb, Justin Gabriel Schlager, Stefanie Rosumeck, Corinna Dressler, Thomas Ruzicka, Alexander Nast, Carola Berking
BACKGROUND: The use of immune checkpoint blockade (ICB) for uveal melanoma (UM) is little established. The aim of this review was to provide a comprehensive overview on the efficacy, safety, and tolerability of ICB in patients with UM. METHODS: We performed a systematic literature research covering MEDLINE, Embase and CENTRAL. Abstracts of pertinent conferences and trial registers were handsearched for relevant studies. RESULTS: Out of 1327 records initially identified, 12 eligible studies were included in the qualitative synthesis...
August 24, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28877190/regional-differences-in-treatment-rates-for-patients-with-chronic-hepatitis-c-infection-systematic-review-and-meta-analysis
#13
Philip Vutien, Michelle Jin, Michael H Le, Pauline Nguyen, Sam Trinh, Jee-Fu Huang, Ming-Lung Yu, Wan-Long Chuang, Mindie H Nguyen
BACKGROUND & AIMS: Treatment rates with interferon-based therapies for chronic hepatitis C have been low. Our aim was to perform a systematic review of available data to estimate the rates and barriers for antiviral therapy for chronic hepatitis C. METHODS: We conducted a systematic review and meta-analysis searching MEDLINE, SCOPUS through March 2016 and abstracts from recent major liver meetings for primary literature with available hepatitis C treatment rates...
2017: PloS One
https://www.readbyqxmd.com/read/28864308/a-neurosurgeon-s-view-outcome-after-rf-ablation-for-mtle
#14
Hana Malikova, Roman Liscak
We reviewed the current RF-ablation technique for mTLE and complications relating to the procedure. RF-ablation of the amygdalohippocampal complex (AHC) is a stereotactic technique, performed under local anesthesia, which achieved long-term seizure-free clinical seizure outcomes in 71% of mTLE patients. Occipital access is used and thermolesions are made from a single trajectory in the long axis of the AHC. RF-ablation has shown a low complication rate and clinical seizure outcomes seem to be comparable with open surgical techniques...
August 25, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28862725/longitudinal-dialysis-adequacy-and-clinical-performance-of-the-vectorflow-hemodialysis-catheter-a-prospective-study
#15
John R Ross, Tatiana A Puga, Thomas E Philbeck
PURPOSE: To report clinical performance and longitudinal assessment of hemodialysis adequacy with the Arrow-Clark VectorFlow catheter, a symmetrical-tip device with a distal lumen configuration designed to reduce platelet shear stress and catheter thrombosis. METHODS AND MATERIALS: We prospectively enrolled patients who required de novo placement of a chronic tunneled catheter for hemodialysis or exchange of a dysfunctional catheter as part of an Institutional Review Board (IRB)-approved protocol...
August 26, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28856562/cardiac-safety-profile-of-patients-receiving-high-cumulative-doses-of-pegylated-liposomal-doxorubicin-use-of-left-ventricular-ejection-fraction-is-of-unproven-value
#16
Keith M Skubitz, Anne H Blaes, Suma H Konety, Gary S Francis
PURPOSE: One of the great conundrums for both oncologists and cardiologists is how to best monitor the potential and actual cardiotoxicity of doxorubicin. Pegylated-liposomal doxorubicin (PLD) has a safer cardiotoxicity profile than bolus administration of doxorubicin. Although ejection fraction (EF) is commonly performed to monitor doxorubicin-induced cardiotoxicity, evidence for its predictive utility is limited. We examined the incidence of doxorubicin-induced heart failure (HF) in patients who received a large cumulative dose of doxorubicin as PLD and its relation to EF and HF...
August 30, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28838794/-pay-for-performance-in-dental-care-a-systematic-narrative-review-of-quality-p4p-models-in-dental-care
#17
Regine Chenot
BACKGROUND: Pay for performance (P4P) links reimbursement to the achievement of quality objectives. Experiences with P4P instruments and studies on their effects are available for the inpatient sector. A systematic narrative review brings together findings concerning the use and the effects of P4P, especially in dental care. METHODS: A systematic literature search in PubMed and the Cochrane Library for reimbursement models using quality indicators provided 77 publications...
August 21, 2017: Zeitschrift Für Evidenz, Fortbildung und Qualität Im Gesundheitswesen
https://www.readbyqxmd.com/read/28838082/effect-of-school-wellness-policies-and-the-healthy-hunger-free-kids-act-on-food-consumption-behaviors-of-students-2006-2016-a-systematic-review
#18
Jennifer L Mansfield, Dennis A Savaiano
Federal regulation mandates that the US National School Lunch Program nutrition standards align with the Dietary Guidelines for Americans. As students consume a substantial proportion of their nutrition during school lunch, increasing access to healthy foods is proposed to improve student dietary outcomes. The purpose of this review is to assess whether policy changes impacted food-consumption behaviors of students during periods when (1) school wellness policies were implemented (2006-2007); (2) the Healthy, Hunger-Free Kids Act was passed (2010-2012); and (3) the Healthy, Hunger-Free Kids Act was implemented (2012-present)...
July 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28831184/direct-acting-antiviral-agents-for-hcv-infection-affecting-people-who-inject-drugs
#19
REVIEW
Jason Grebely, Behzad Hajarizadeh, Gregory J Dore
Globally, 12 million people are estimated to have injected drugs in the past year, 50% of whom have chronic HCV infection, with people who have previously injected drugs presenting an additional large reservoir of infection. The availability of simple and tolerable interferon-free direct-acting antiviral agents (DAAs) for HCV infection, which have a cure rate of >95% represents one of the most exciting advances in clinical medicine in the past few decades. Adherence and response to DAA therapy among people who inject drugs (PWID) receiving opioid substitution therapy (OST) in clinical trials are comparable to populations without a history of injecting drugs...
August 23, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28821508/a-novel-income-security-intervention-to-address-poverty-in-a-primary-care-setting-a-retrospective-chart-review
#20
Marcella K Jones, Gary Bloch, Andrew D Pinto
OBJECTIVE: To examine the development and implementation of a novel income security intervention in primary care. DESIGN: A retrospective, descriptive chart review of all patients referred to the Income Security Heath Promotion service during the first year of the service (December 2013-December 2014). SETTING: A multisite interdisciplinary primary care organisation in inner city Toronto, Canada, serving over 40 000 patients. PARTICIPANTS: The study population included 181 patients (53% female, mean age 48 years) who were referred to the Income Security Health Promotion service and engaged in care...
August 17, 2017: BMJ Open
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