Complexity-entropy analysis at different levels of organization in written language

Written language is complex. A written text can be considered an attempt to convey a meaningful message which ends up being constrained by language rules, context dependence and highly redundant in its use of resources. Despite all these constraints, unpredictability is an essential element of natural language. Here we present the use of entropic measures to assert the balance between predictability and surprise in written text. In short, it is possible to measure innovation and context preservation in a document. It is shown that this can also be done at the different levels of organization of a text. The type of analysis presented is reasonably general, and can also be used to analyze the same balance in other complex messages such as DNA, where a hierarchy of organizational levels are known to exist

PALLIATIVE CARE ELDERLY PATIENTS WITH SLEEPING DISORDERS ARE POORLY TREATED

Background: Sleep disorders are frequent in patients with advanced cancer receiving palliative-care, especially in elderly patients (1). Sleep disorders during palliative-care may be related with anxiety, opioids related central-sleep apnoea or corticoids therapy between others (2). Our aim was to quantify the effectiveness of hypnotic medication in the sleep quality in advanced cancer receiving palliative-care elderly patients. Material and methods: A descriptive cross-sectional study was conducted in elderly patients with advanced cancer receiving palliative-care exploring their sleep quantity and quality (approved by Local Ethical Committee). Patients who were in our palliative care program and didn´t have any exclusion criteria: Age below 60 years, with ability to communicate effectively, and without cognitive failure and/or delirium, and/or psychotic illness. The Pittsburgh Sleep Quality Index (PSQI) questionnaire and EVA scales were used to measured sleep quality and pain and anxiety levels. Patient under corticoids treatment were compared with other non-sleep disorders risky treatment. Results are expressed as mean ± sem. and were compared by Student t test and ANOVA test followed by Bonferroni post-test. Results: Patients, N=138, 63.8% male, aged 70.9±1.1 years old with diagnostic of 28.3% gastro-intestinal, 15.9% mama/gynaecological , 13% pulmonary, 12.3% urinary, 6.5% liver, 4.3% central nervous system, 1.4% pancreatic, and 18.1% others types of terminal cancer were enrolled. Patients were treated with no oncologic treatment (78.3%), chemotherapy (12.3%), radiotherapy (5.1%), hormone therapy (3.6%), or immunotherapy (0.7%). 54.3% were treated with corticoids vs. 20.3% under other sleep disorders risky treatment and 25.4% with no treatment. The sleep disturbances prevalence were 81.2% in the total population and 90.4% in patients treated with corticoids (p<0.05). However a 54.3% of the patients received benzodiazepines, zolpidem or chlormethiazole. 65.2% of the patients need more than three times rescue hypnotic medication during the last week. Bad sleeper showed significantly higher intensity of pain, asthenia, sadness, anxiety, nausea, dyspnea and discomfort. Discussion: Sleep disorders may be primary or, more commonly, a secondary symptom of the advancing disease process. Multiple pharmacologic and non-pharmacologic interventions may be used for the management of sleep disturbances in palliative medicine. However, many patients do not seek medical attention for sleep disturbances, and health care providers tend to under-diagnose this condition and under-treat it when diagnosed, thus missing an opportunity to improve the quality of life of patients already suffering from the burden of terminal disease. The diversity of patients under palliative care makes management of sleep disorders particularly challenging and highly needed to be individualized. Conclusion. Elderly patients with advanced cancer subjected to palliative care received insufficient hypnotic medication especially under corticoids co-treatment. References: (1) Sateia MJ and Lang BJ. 2008. Curr Oncol Rep 10(4):309-18. (2) Yennurajalingam S et al. 2011. J Pain Symptom Manage 41(1):49-56.University of Malaga. Campus of International Excellence Andalucia Tech

About the isocurvature tension between axion and high scale inflationary models

The present work suggests that the isocurvature tension between axion and high energy inflationary scenarios may be avoided by considering a double field inflationary model involving the hidden Peccei-Quinn Higgs and the Standard Model one. Some terms in the lagrangian we propose explicitly violate the Peccei-Quinn symmetry but, at the present era, their effect is completely negligible. The resulting mechanism allows a large value for the axion constant, of the order $f_a\sim M_p$, thus the axion isocurvature fluctuations are suppressed even when the scale of inflation $H_{inf}$ is very high, of the order of $H_{inf}\sim M_{gut}$. This numerical value is typical in Higgs inflationary models. An analysis about topological defect formation in this scenario is also performed, and it is suggested that, under certain assumptions, their effect is not catastrophic from the cosmological point of view