Miracle-dz/UniFAR-FTUs huggingface dataset:
Financial Time Series Forecasting - A Machine Learning Approach

The Stock Market is known for its volatile and unstable nature. A particular stock could be thriving in one period and declining in the next. Stock traders make money from buying equity when they are at their lowest and selling when they are at their highest. The logical question would be: "What Causes Stock Prices To Change? ". At the most fundamental level, the answer to this would be the demand and supply. In reality, there are many theories as to why stock prices fluctuate, but there is no generic theory that explains all, simply because not all stocks are identical, and one theory that may apply for today, may not necessarily apply for tomorrow. This paper covers various approaches taken to attempt to predict the stock market without extensive prior knowledge or experience in the subject area, highlighting the advantages and limitations of the different techniques such as regression and classification. We formulate both short term and long term predictions. Through experimentation we achieve 81% accuracy for future trend direction using classification, 0.0117 RMSE for next day price and 0.0613 RMSE for next day change in price using regression techniques. The results obtained in this paper are achieved using only historic prices and technical indicators. Various methods, tools and evaluation techniques will be assessed throughout the course of this paper, the result of this contributes as to which techniques will be selected and enhanced in the final artefact of a stock prediction model. Further work will be conducted utilising deep learning techniques to approach the problem. This paper will serve as a preliminary guide to researchers wishing to expose themselves to this area.
A new vision of ocean biogeochemistry after a decade of the Joint Global Ocean Flux Study (JGOFS).

The Joint Global Ocean Flux Study (JGOFS) has completed a decade of intensive process and time-series studies on the regional and temporal dynamics of biogeochemical processes in five diverse ocean basins. Its field program also included a global survey of dissolved inorganic carbon (DIC) in the ocean, including estimates of the exchange of carbon dioxide (CO2) between the ocean and the atmosphere, in cooperation with the World Ocean Circulation Experiment (WOCE). This report describes the principal achievements of JGOFS in ocean observations, technology development and modelling. The study has produced a comprehensive and high-quality database of measurements of ocean biogeochemical properties. Data on temporal and spatial changes in primary production and CO2 exchange, the dynamics of of marine food webs, and the availability of micronutrients have yielded new insights into what governs ocean productivity, carbon cycling and export into the deep ocean, the set of processes collectively known as the "biological pump. " With large-scale, high-quality data sets for the partial pressure of CO2 in surface waters as well for other DIC parameters in the ocean and trace gases in the atmosphere, reliable estimates, maps and simulations of air-sea gas flux, anthropogenic carbon and inorganic carbon export are now available. JGOFS scientists have also obtained new insights into the export flux of particulate and dissolved organic carbon (POC and DOG), the variations that occur in the ratio of elements in organic matter, and the utilization and remineralization of organic matter as it falls through the ocean interior to the sediments. JGOFS scientists have amassed long-term data on temporal variability in the exchange of CO2 between the ocean and atmosphere, ecosystem dynamics, and carbon export in the oligotrophic subtropical gyres. They have documented strong links between these variables and large-scale climate patterns such as the El Nino-Southern Oscillation (ENSO) or the North Atlantic Oscillation (NAO). An increase in the abundance of organisms that fix free nitrogen (N-2) and a shift in nutrient limitation from nitrogen to phosphorus in the subtropical North Pacific provide evidence of the effects of a decade of strong El Ninos on ecosystem structure and nutrient dynamics. High-quality data sets, including ocean-color observations from satellites, have helped modellers make great strides in their ability to simulate the biogeochemical and physical constraints on the ocean carbon cycle and to extend their results from the local to the regional and global scales. Ocean carbon-cycle models, when coupled to atmospheric and terrestrial models, will make it possible in the future to predict ways in which land and ocean ecosystems might respond to changes in climate.
Electro-Cerebral Activity, Extraversion and Neuroticism

Several investigators have attempted to relate cerebral activity to extraversion and neuroticism. These include Berger (1933), Jasper (1937), Gottlober (1938), Henry and Knott (1941), Knott (1941), Darrow (1947), Lindsley (1950), McAdam and Orme (1954), Gastaut (1957) and Brazier (1960). The results, however, have been inconclusive.
The New Organizing Logic of Digital Innovation: An Agenda for Information Systems Research

I n this essay, we argue that pervasive digitization gives birth to a new type of product architecture: the layered modular architecture . The layered modular architecture extends the modular architecture of physical products by incorporating four loosely coupled layers of devices, networks, services, and contents created by digital technology. We posit that this new architecture instigates profound changes in the ways that ﬁrms organize for innovation in the future. We develop (1) a conceptual framework to describe the emerging organizing logic of digital innovation and (2) an information systems research agenda for digital strategy and the creation and management of corporate information technology infrastructures.
Can warfarin be continued during dental extraction? Results of a randomized controlled trial.

A randomized controlled trial was set up to investigate whether patients who were taking warfarin and had an International Normalised Ratio (INR) within the normal therapeutic range require cessation of their anticoagulation drugs before dental extractions. Of 109 patients who completed the trial, 52 were allocated to the control group (warfarin stopped 2 days before extraction) and 57 patients were allocated to the intervention group (warfarin continued). The incidence of bleeding complications in the intervention group was higher (15/57, 26%) than in the control group (7/52, 14%) but this difference was not significant. Two patients in the study required hospital review for bleeding and all other episodes of bleeding were controlled by patients at home. Continuing warfarin when the INR is < 4.1 may lead to an increase in minor post-extraction bleeding after dental extractions but we found no evidence of an increase in clinically important bleeding. As there are risks associated with stopping warfarin, the practice of routinely discontinuing it before dental extractions should be reconsidered.
Malnutrition and cachexia among cancer out-patients in Nairobi, Kenya

Abstract Cancer is the third leading cause of death in Kenya. However, there is scarce information on the nutritional status of cancer patients to guide in decision making. The present study sought to assess the risk of malnutrition, and factors associated with malnutrition and cachexia, among cancer out-patients, with the aim of informing nutrition programmes for cancer management in Kenya and beyond. This was a facility-based cross-sectional study performed at Kenyatta National Hospital and Texas Cancer Centre in Nairobi, Kenya. The risk of malnutrition was assessed using the Malnutrition Universal Screening Tool (MUST). Diagnoses of malnutrition and cachexia were done using the European Society of Clinical Nutrition and Metabolism (ESPEN) and Fearon criteria, respectively. A total of 512 participants were assessed. Those at risk of malnutrition were 33·1 % (12·5 % at medium risk, 20·6 % at high risk). Prevalence of malnutrition was 13·4 %. The overall weight loss >5 % over 3 months was 18·2 % and low fat-free mass index was 43·1 %. Prevalence of cachexia was 14·1 % compared with 8·5 % obtained using the local criteria. Only 18·6 % participants had received any form of nutrition services. Age was a predictor of malnutrition and cachexia in addition to site of cancer for malnutrition and cigarette smoking for cachexia. The use of the MUST as a screening tool at the first point of care should be explored. The predictive value of current nutrition assessment tools, and the local diagnostic criteria for malnutrition and cachexia should be reassessed to inform the development of appropriate clinical guidelines and future capacity-building initiatives that will ensure the correct identification of patients at risk for timely care.
Post-Newtonian gravitational radiation and equations of motion via direct integration of the relaxed Einstein equations. IV. Radiation reaction for binary systems with spin-spin coupling

Using post-Newtonian equations of motion for fluid bodies that include radiation-reaction terms at 2.5 and 3.5 post-Newtonian (PN) order O[(v/c)^5] and O[(v/c)^7] beyond Newtonian order), we derive the equations of motion for binary systems with spinning bodies, including spin-spin effects. In particular we determine the effects of radiation-reaction coupled to spin-spin effects on the two-body equations of motion, and on the evolution of the spins. We find that radiation damping causes a 3.5PN order, spin-spin induced precession of the individual spins. This contrasts with the case of spin-orbit coupling, where there is no effect on the spins at 3.5PN order. Employing the equations of motion and of spin precession, we verify that the loss of total energy and total angular momentum induced by spin-spin effects precisely balances the radiative flux of those quantities calculated by Kidder et al.
Infant emotionality, parenting, and 3-year inhibition: exploring stability and lawful discontinuity in a male sample.

In this study, the authors examine temperament (12-13 months) and mothering and fathering (15, 21, 27, 33 months) antecedents of inhibition of children at age 3 years prospectively in a sample of 125 firstborn boys and retrospectively in only the most and least inhibited children. High negativity coupled with low positivity in infancy predicted high inhibition, as did parenting that was supportive (e.g., high sensitivity, low intrusiveness). Parenting appeared more influential in the case of children who were highly negative as infants. The importance of distinguishing positive and negative emotionality in infancy and of studying mothering and fathering are discussed.
Psychometric properties of the Dental Hygienist Anxiety Scale in a group of general dental patients

Abstract Objective. The aim of the present study was to evaluate the psychometric properties of the Dental Hygienist Anxiety Scale (DHAS) in a sample of adult general dental patients. Materials and methods. The DHAS is a questionnaire adapted to assess fear and anxiety of dental hygienist (DH) treatment. The DHAS contains four items and the sum of scores range from 4 (no anxiety) to 20 (extreme fear). A convenient sample of 80 patients in treatment at two DH programs in Sweden were consecutively included in the study. The DHAS was distributed together with questions regarding self-perceived oral health and experience of dental care at the first visit after a clinical examination performed by a DH. Re-test assessments of DHAS were conducted ∼ 2 weeks later in conjunction with the next visit to the DH before treatment (scaling session). Results. The results verified a significant positive correlation between the average DHAS sum of scores and global fear of DH and dentist treatment, perceived pain during the last DH treatment and female gender. The DHAS sum of scores had a high internal consistency, Cronbach's coefficient of 0.89 and 0.87 at the first and at the second assessment, respectively. The test–re-test reliability of the DHAS sum of scores was acceptable, with an intra-class coefficient of 0.82 and Kappa coefficients between 0.49–0.78 for the four single items in the DHAS. Conclusions. These results suggest that the DHAS has acceptable psychometric proprieties and is a valid and reliable scale to assess anxiety in DH treatment.
Progression of peri-aortic fibrosis despite endovascular repair of an inflammatory aneurysm.

Introduction implantation pyrexia, but the WCC remained normal. Steroid therapy was stopped 2 months after the repair. Endovascular repair of an inflammatory aneurysm has A contrast-enhanced CT performed seven months after the repair showed a decrease in size of the previously been reported, resulting in the successful exclusion of the aneurysm. This case describes proaneurysm to 5 cm maximal diameter, but worsening peri-aortic inflammation and hydronephrosis of the gression of the peri-aortic inflammation following repair. right kidney (Fig. 2). In view of this a further 4-week course of steroids was instituted one year after the repair. A repeat CT was unchanged. The patient remains well under review, with normal blood pressure, serum creatinine and ESR of 10. Case Report
Drug-induced deactivation of inhibitory networks predicts pathological gambling in PD

Objective: Some patients with Parkinson disease (PD) develop pathological gambling when treated with dopamine agonists (DAs). However, little is known about DA-induced changes in neuronal networks that may underpin this drug-induced change in behavior in vulnerable individuals. In this case-control study, we aimed to investigate DA-induced changes in brain activity that may differentiate patients with PD with DA-induced pathological gambling (gamblers) from patients with PD without such a history (controls). Methods: Following overnight withdrawal of antiparkinsonian medication, patients were studied with H215O PET before and after administration of DA (3 mg apomorphine) to measure changes in regional cerebral blood flow as an index of regional brain activity during a card selection game with probabilistic feedback. Results: We observed that the direction of DA-related activity change in brain areas that are implicated in impulse control and response inhibition (lateral orbitofrontal cortex, rostral cingulate zone, amygdala, external pallidum) distinguished gamblers from controls. DA significantly increased activity in these areas in controls, while gamblers showed a significant DA-induced reduction of activity. Conclusions: We propose that in vulnerable patients with PD, DAs produce an abnormal neuronal pattern that resembles those found in nonparkinsonian pathological gambling and drug addiction. DA-induced disruption of inhibitory key functions—outcome monitoring (rostral cingulate zone), acquisition and retention of negative action-outcome associations (amygdala and lateral orbitofrontal cortex)—together with restricted access of those areas to executive control (external pallidum)—may well explain loss of impulse control and response inhibition in vulnerable patients with PD, thereby fostering the development of pathological gambling.
Pathological overproduction: the bad side of adenosine

Adenosine is an endogenous ubiquitous purine nucleoside, which is increased by hypoxia, ischaemia and tissue damage and mediates a number of physiopathological effects by interacting with four GPCRs, identified as A1, A2A, A2B and A3. Physiological and acutely increased adenosine is mostly associated with beneficial effects that include vasodilatation and a decrease in inflammation. In contrast, chronic overproduction of adenosine occurs in important pathological states, where long‐lasting increases in the nucleoside levels are responsible for the bad side of adenosine associated with chronic inflammation, fibrosis and organ damage. In this review, we describe and critically discuss the pathological overproduction of adenosine and analyse when, where and how adenosine exerts its detrimental effects throughout the body.
Design and Analysis of a Novel Grid-Connected to Rotor Type Doubly Fed Induction Machine

This paper proposes a novel grid-connected to rotor type doubly fed induction machine (DFIM) in which the rotor winding is connected to the grid instead of the stator winding. The size and weight of the stator can be reduced on the proposed grid-connected to rotor type DFIM, because the proposed type can use the rotor core more efficiently compared to a conventional grid-connected to stator type DFIM. In order to verify the size and weight reduction of the proposed type, the loading distribution method (LDM) is utilized. As a design result, the outer diameter and weight of the stator on the proposed type have been decreased. Equivalent circuit analysis and finite element analysis (FEA) were performed to verify the design results and to analyze the characteristics of the novel DFIM. Finally, these analysis results are confirmed by experimental results.
Stigma, depression, and somatization in South India.

OBJECTIVE The relationships of stigma to both depression and somatization were studied in psychiatric patients in South India to test the hypothesis that stigma is positively related to depressive symptoms and negatively related to somatoform symptoms. METHOD Illness experience, symptom prominence, and indicators of stigma for 80 psychiatric outpatients were addressed with the Explanatory Model Interview Catalogue. Stigma scores and ratings of symptom prominence were derived. The Structured Clinical Interview for DSM-III-R and the Hamilton Depression Rating Scale were administered to assess psychiatric diagnoses and symptoms of depression. Clinical narratives were analyzed to clarify the nature of relationships between stigma and symptom prominence. RESULTS The mean stigma scores were 18.2 (SD = 13.0) for patients with somatoform disorders only, 36.0 (SD = 19.0) for patients with depressive disorders only, and 26.8 (SD = 16.0) for those with mixed depressive and somatoform disorders. The stigma scores were positively related to depressive symptoms, as indicated by Hamilton scale scores and prominence ratings for depressive symptoms, but stigma was inversely related to somatoform symptoms, as indicated by ratings of symptom prominence. Although both depressive and somatic symptoms were distressing, qualitative analysis clarified meanings of perceived stigma, showing that depressive symptoms, unlike somatic symptoms, were construed as socially disadvantageous. CONCLUSIONS The tendency to perceive and report distress in psychological or somatic terms is influenced by various social and cultural factors, including the degree of stigma associated with particular symptoms. This study with the Explanatory Model Interview Catalogue demonstrates how quantitative and qualitative methods can be effectively combined to examine key issues in cultural psychiatry.
Pro-Inflammatory Cytokines, Lipid Metabolism and Inflammation in Gestational Diabetes Mellitus as Cause of Insulin Resistance

Gestational diabetes mellitus (GDM) is a glucose intolerance of varying severity with onset or first recognition, during pregnancy that complicates 2–4% of pregnancies (Ben-Haroush et al 2004, American Diabetes Association 2005, NICE Guidelines 2008). Both patients with GDM, and their offspring, have greater risk of developing type 2 diabetes later in life (Damn 1998). There is a close relationship between GDM and prediabetes state in addition to the risk of future deterioration in insulin resistance and ultimate development of overt type 2 diabetes mellitus (Kjos et al 1999). Diabetes in pregnancy is increasing and therefore it is important to raise awareness of the associated health risks to the mother, the growing fetus, and the future child. Perinatal mortality and morbidity is increased in diabetic pregnancies through increased stillbirths and congenital malformation rates (Canadian Diabetes association 2003, HAPO 2008, RCOG SAC 2011). These are mainly the result of early fetal exposure to maternal hyperglycaemia. In the mother, pregnancy may lead to worsening or development of diabetic complications such as retinopathy, nephropathy, and hypoglycaemia (Ali and Dornhorst 2011). Although glycaemic control is important in reducing microvascular complications due to diabetes in pregnancy, it has not reduced the rate of congenital anomalies, macrosomia and other adverse outcomes (Canadian Diabetes Association 2003). This may be as a result of our lack of understanding of the epidemiology and pathogenesis of GDM (Omu et al. 2010), especially the role of inflammation, cytokines and lipid metabolism.
Snow on Antarctic sea ice

Snow on Antarctic sea ice plays a complex and highly variable role in air‐sea‐ice interaction processes and the Earth's climate system. Using data collected mostly during the past 10 years, this paper reviews the following topics: snow thickness and snow type and their geographical and seasonal variations; snow grain size, density, and salinity; frequency of occurrence of slush; thermal conductivity, snow surface temperature, and temperature gradients within snow; and the effect of snow thickness on albedo. Major findings include large regional and seasonal differences in snow properties and thicknesses; the consequences of thicker snow and thinner ice in the Antarctic relative to the Arctic (e.g., the importance of flooding and snow‐ice formation); the potential impact of increasing snowfall resulting from global climate change; lower observed values of snow thermal conductivity than those typically used in models; periodic large‐scale melt in winter; and the contrast in summer melt processes between the Arctic and the Antarctic. Both climate modeling and remote sensing would benefit by taking account of the differences between the two polar regions.
Control of in vitro maturation of bovine cumulus‐oocyte complex by preovulatory granulosa cells

The present study was designed to investigate (1) the influence of the secretions of follicular cells on the in vitro maturation of bovine cumulus‐oocyte complexes (COCs) and (2) the origin of the factors controlling the metabolic function of cumulus cells during the preovulatory period. Preovulatory granulosa cells were collected from synchronized heifers either before or 7–9 hr after the luteinizing hormone (LH) surge, and their secretions were recovered after a 3 hr incubation. Follicular fluids (FFs) originating from the same follicles and sera from the same animals were also collected. The effects of FFs, sera, and secretions of granulosa cells on COC metabolism were compared during 24 hr of culture. FF stimulated cumulus expansion, progesterone secretion, and overall protein synthesis by COCs but decreased the amount of a major protein of 28 kDa. The time at which FF was collected influenced both cumulus expansion and protein synthesis by COCs. The effects of FF on COC metabolism were detected at the lowest protein concentration studied (0.073 mg/ml) and could be mimicked with serum, but only at a protein concentration 100‐fold higher. The inhibitory effect of FF and serum on the amount of the 28 kDa protein was reproduced with the secretions of granulosa cells, acting at protein concentrations five‐ and 500‐fold lower, respectively. However, the secretions of granulosa cells enhanced slightly cumulus expansion and had no effect on progesterone secretion and overall protein synthesis by COCs. These results suggest that COC metabolism is influenced both by endocrine and by local factors secreted by granulosa cells in response to gonadotropins. The paracrine control of COC metabolism by preovulatory granulosa cells could be exerted not only via intercellular contacts but also via substances secreted in FF. © 1993 Wiley‐Liss, Inc.