bluuebunny/crossref_metadata_2025 huggingface dataset:
BIOMECHANICAL ABDOMINOPLASTY TECHNIQUES AND LIFE QUALITY OF PATIENTS WITH COSMETIC DEFECTS OF ANTERIOR ABDOMINAL WALL
Authors: Drabovsky V.S.
Published: November 2019

Investigating life quality is remaining high in the context of healthcare reforming processes and in modern medicine. An increase in the number of surgical operations for cosmetic defects of the anterior abdominal wall, an increase in the requirements for treatment results, forced surgeons to look for alternative methods of treatment that would significantly reduce aesthetic defects and improve the quality of life by examining the effect of surgical treatment on the mental and physical components of health. This predetermined the purpose of this study. To achieve the goal, the results of a comprehensive clinical examination and correction of 81 patients with cosmetic defects of the anterior abdominal wall, who took the treatment at the clinic of the Department of Surgery No. 3, Ukrainian Medical Stomatological Academy, from 2012 – 2019, were analyzed. The main group (41) was operated on by using the biomechanical methods of abdominoplasty worked up by the author, taking into account the best angle of direction of the stress vectors in the tissue of the upper transverse skin-fat flaps in the postoperative period during stress relaxation. The comparison group consisted of 40 people operated on by standard techniques of mobilization and fixation of skin-fat flaps. Quality of life was assessed the day before the operation and 6 months after, according to the EUROQol-5S-5D questionnaire system. Based on the analysis of the results, the following conclusions have been drawn: surgical correction of cosmetic defects of anterior abdominal wall causes psycho-emotional and physiological prerequisites for growing physical activity of patients, and in 6 months in positively effects the self-assessment of patients’ health status. Overweight patients demonstrate a statistically significant decrease in body mass index during the year, which is inversely correlated with an improvement in the scores on the rating scale and a weak correlation with a change in the average scoring and self-assessment of body weight. This integrated technique for performing abdominoplasty in patients with cosmetic defects of the anterior abdominal wall has been proven as effective means, which can improve the quality of life of surgical patients.
DETERMINING THE EFFECTIVENESS OF THE TREATMENT OF CORONARY HEART DISEASE
Authors: Zhdan V.N. , Khaimenova Н.S. , Babanina M.Yu. , Katerinchuk A.I. , Volchenko G.V.
Published: November 2019

The frequency of the combination of coronary heart disease (CHD) and chronic obstructive pulmonary disease (COPD) is highlighted in the work, and it is concluded that there is a fairly significant stratum of patients, namely 25,9%, with combined pathology of the respiratory system and cardiovascular. On the basis of the therapeutic department of the Poltava central regional clinical hospital, 97 patients (84 men and 13 women) with a combination of COPD and CHD were examined: stable angina pectoris, grade II, which were hospitalized due to exacerbation of respiratory pathology. They were divided into 2 groups. Group 1 patients (51 people) received only basic therapy (β2-agonists, anticholinergics, methylxanthines, inhaled glucocorticosteroids, phosphodiesterase-4 inhibitors). In addition to basic therapy, patients of the 2nd group (46 people) were additionally prescribed L-arginine («Tivomax») in the form of a 4,2% solution of 100 ml intravenously once a day for 10 days. As a result of the treatment, a positive dynamics of the regression of clinical manifestations of acute exacerbation of COPD was revealed in both study groups. However, in the second group of subjects who receive L-arginine on the basis of basic therapy, clinical indicators, indicators of the function of external respiration and exercise tolerance, indicators of cardiohemodynamics significantly (p<0,05) improved compared with the control group. It was concluded that the inclusion of L-arginine in the complex treatment of patients with exacerbation of COPD and concomitant CHD increases the effectiveness of the treatment of respiratory pathology and improves cardiodynamics. The addition of L-arginine to complex therapy for patients with COPD in combination with CHD leads to a statistically significant improvement in clinical and instrumental parameters, which is due to the antihypoxic, antiplatelet, cytoprotective and vasodilatory effects, detoxification activity of L-arginine (“Tivomax”), which is safe improves the effectiveness of treatment.
SIDEROPENIC SYNDROME IN STUDENTS
Authors: Pats N. V. , Kapustina A. N. , Yakovchik D. Yu.
Published: November 2019

The latent iron deficit is always preceded to iron-deficient anaemia. A research aim was to study occurrence rate of clinical signs of latent iron deficit in adolescents. 280 individuals aged from 17 to 21 were involved into study. A questionnaire method with a series of questions was used to identify signs of sideropenic and anaemic syndromes, as well as questions to identify the causes of iron deficiency. Statistical processing was carried out by applying the Microsoft office Excel 2013. Among the clinical signs of syderopenic syndrome in the students we observed the predominance of olfactory perversion (33,21%), muscular weakness, pain gastrocnemius muscles (29,64%), taste perversion (16,79%), changes in the state of hair and nails (46,79%). This was mainly typical for female individuals. 33,75% of women had polymenorea, and 37,2% out of the were diagnosed to have a syderopenic syndrome. The individuals complaining on gastrointestinal problems (two or more) demonstrated a sharp increase in the frequency syderopenic syndrome occurance (by 26,8%) as compared to the respondents without the complaints.
FEATURES OF LEPTIN LEVELS AND ITS CORRELATION IN PATIENTS WITH HYPERTENSION AND HYPOTHYROIDISM
Authors: Radchenko O.M. , Bek N.S. , Olenych L.V.
Published: November 2019

Essential hypertension (EH) is a leading cause of morbidity, disability and mortality. High blood pressure is one of the most significant cardiovascular risk factors. Almost 90% of EH patients have comorbid diseases of the internal organs, in particular hypothyroidism. A changed functional state of the thyroid gland leads to disturbed protein, carbohydrate and fat metabolism, endocrine imbalance, changes in erythropoiesis, and immune system imbalance. As of today, the peculiarities of essential hypertension in hypothyroidism patients have been insufficiently studied, and information about adipokine levels, including leptin in patients with primary hypothyroidism and EH, has not been sufficiently analysed. The aim of the study was to evaluate the specificities of leptin levels and its correlation with other parameters in patients with hypertension and hypothyroidism. For this purpose, 52 patients with EH were examined. They were divided into two groups, the first group including patients with primary hypothyroidism and the second group with normal thyroid function. The study revealed that hyperleptinemia was observed in patients with EH and hypothyroidism, whereas the leptin level was higher under conditions of postoperative hypothyroidism. Hyperleptinemia is associated with a decreased myocardial contractile function and prolonged electrical heart systole. An increase in leptin resistance occurred in parallel with the activation of adrenal cortex function. Increased secretory activity of adipocytes is associated with an increase in the size of the posterior wall of the left ventricle, a tendency to albuminuria, hypoalbuminemia and hypoglycemia.
OUR EXPERIENCE IN THE TREATMENT OF CALCANEUS FRACTURES
Authors: Shimon V.M. , Shereghii A.A. , Alfeldii S.P. , Shimon M. V.
Published: November 2019

Treatment of Calcaneus fractures needs improvement of modern methods. The purpose of the work is to reveal the structural and functional advantages of the results of surgical treatment of patients with intra-articular fractures of the calcaneus with the use of bone plastic. Material and methods. Case histories of 51 patients treated surgically at the clinical bases of the Department of General Surgery between 2014–2019, retrospectively studied for impressionable intraatricular fractures of 53 calcaneus bones with displacement. The average age of trauma victims was 34.7 ± 1.6 years (26 to 51 years), women - 9 (17.64%), men - 42 (82.35%). All patients operated by open reduction and osteosynthesis (group A; n = 10; 19.6%), and in combination with an osteoplasty by autograft from the iliac crest, biocermic implant (group B; n = 37; 80.4%). Results. At 18 months, excellent results (100–90 points for AOFAS) were achieved in 14 (41.6% - group A; 58.4% - group B) patients, good (89–80 points for AOFAS) in 23 (42, 8% - group A; 57.2% - group B) patients, satisfactory (79-70 points for AOFAS) - in 10 (60.0% - group A; 40.0% - group B) patients, unsatisfactory (less from 70 AOFAS points) - in 4 (75.0% - group A; 25.0% - group B) patients. Conclusions. The use of a bio-ceramic bone implant has proven to be a promising direction for osteoplastic interventions with good deformation resistance in the long term. Replacement of bone defect with an auto-osseous graft at the reference osteoplasty in separate terms showed higher bone density compared to none, but less than when using a bioceramic filler Post-operative deformity of the calcaneus testifies to the difficulties of treatment of this pathology, which requires further search for the most optimal materials for replacement of the bone cavity in order to achieve the possibility of early mobilization, preservation of the anatomic structure of the calcaneus, congruence of joint surfaces, prevention of complications.
Geomorphology in the works of Russian soil scientists-geographers XX c. From V.V. Dokuchaev to I.P. Gerasimov
Authors: Chichagov V. P.
Published: November 2019

Examples of relief studies by seven prominent Russian soil scientists, representatives of the Dokuchaev school, are presenterd. Geomorphological issues, ideas and concepts in the works of soil scientists of the XX century. showed their high professional interest in geomorphology. The beginning of the geomorphological research of Russian soil scientists was laid by the great Russian researcher V. V. Dokuchaev. Geomorphological views of V. V. Dokuchaev were ahead of the V. M. Davis' concept of the geographic cycle. Soil-geomorphological studies of S. S. Neustruev partially supplemented the concept of V. M. Davis. B. B. Polynov proved the necessity of attracting geomorphological methods and techniques when conducting soil studies, used geomorphological principles in the deduction of the three laws of the distribution of weathering crusts. I. P. Gerasimov created the theory of morphostructure and morphosculpture, introduced the idea of three macrocycles in the history of the formation of the Earth's landscapes. All the researchers cited in the article conducted detailed complex studies using geodesy methods. Scientists were able to identify a large array of new geomorphological data from the classification of microrelief to the adjustment of the main laws of geomorphology. The main feature of the scientific activity of Russian soil scientists-geomorphologists was the Dokuchaev school that gave rise to all them. It was from the Dokuchaev's principles and approaches that the mentioned scientists started and developed and passed to their students and followers. The well known Russian soil scientist and geomorphologist I. P. Gerasimov completed the century-long period of the geomorphological studies by soil scientists started by V. V. Dokuchaev.
To the methods of geomorphological research (geomorphological lessons of the Caspian)
Authors: Rychagov G. I.
Published: November 2019

The main focus of the article is the significance of the geomorphological method for the reconstruction of paleogeographic events that took place in the Late Pleistocene and Holocene. The specific data obtained as a result of applying this method are given. A reasonable curve of the Caspian Sea level fluctuations in the Holocene was compiled. A risk zone has been defined, within which the level of the Caspian Sea will fluctuate in the future, under modern physics-geographical conditions, which is fundamental importance when planning any economic measures in the coastal zone. Predictions were made and later justified of the Caspian Sea level fluctuations in the 20thearly 21st centuries. The climatic nature of the Caspian transgressions was confirmed. Obtained were new data on the evolution of the shores of the Caspian Sea under rising level conditions, which can be used when forecasting the development of the shores of other seas in the conditions of the present-day rise of the World Ocean level.
Neotectonic mountain uplift and geomorphology
Authors: Ollier C. D. , Pain C. F.
Published: November 2019

Mountains are topographic features caused by erosion after vertical uplift or mountain building. Mountain building is often confused with orogeny, which today means the formation of structures in fold belts. The common assumption that folding and mountain building go together is generally untrue. Many mountains occur in unfolded rocks, granites and volcanic rocks, so there is no direct association of folding and mountain building. In those places where mountains are underlain by folded rocks the folding pre-dates planation and uplift. The age of mountains is therefore not the age of the last folding (if any) but the age of vertical uplift. Since mountains are not restricted to folded rocks, lateral compression is not required to explain the uplift.

A compilation of times of uplift of mountains around the world shows that a major phase of tectonic uplift started about 6 Ma, and much uplift occurred in the last 2 Ma. This period is known as the Neotectonic Period. It is a global phenomenon including mountains on passive continental margins, and those in deep continental interiors. Several hypotheses of mountain building have problems with this timing. Some fail by being only able to make mountains out of folded rock at continental margins. Many translate the vertical uplift into lateral compression, but vertical uplift alone can create mountains.

The Neotectonic Period has important implications for geomorphology, climate and global tectonics. In geomorphology it does not fit into conventional theories of geomorphology such as Davisian or King cycles of erosion. Neotectonic uplift might initiate several cycles of erosion, but most planation surfaces are much older than the Neotectonic Period. The increasing relief associated with Neotectonic uplift affected rates of erosion and sedimentation, and also late Cenozoic climate.

The Neotectonic Period does not fit within plate tectonics theory, in which mountains are explained as a result of compression at active margins: mountains in other locations are said to have been caused by the same process but further back in time. This is disproved by the young age of uplift of mountains in intercontinental and passive margin positions. Subduction is supposed to have been continuous for hundreds of millions of years, so fails to explain the world-wide uplifts in just a few million years.

Geomorphologists should be guided by their own findings, and refrain from theory-driven hypotheses of plate collision or landscape evolution.
Coastal dynamics in the Narva bay of the Baltic sea: present-day state and development tendencies
Authors: Korzinin D. V. , Leont'yev I. O. , Shtremel' M. N.
Published: November 2019

Central part of Narva bay is characterized by accretive coast, which is formed due to the presence of significant volumes of sand deposits. In the paper, the current state of coastal relief was analyzed and the forecast of its evolution under the prevailing wave climate was performed. The problem of the equilibrium of the coastal morphosystem for a given sediment budget and the probable trend of relative sea level was considered. Morphodynamic forecast for the period of the next decades was justified for designing the crossing of the coastal zone by the main pipeline route. Increasing of the role of accumulation processes from the south to the north has been identified through the field survey and analysis of satellite images, and has been shown by the nature of the beach relief and the underwater coastal slope. The calculation of the longshore sediment drift revealed the existence of a convergence zone for two differently directed sediment flows. Convergence of the sediment flows leads to accumulation of sand deposits at the rate of 19.0 m3 per one running meter per year. Estimates of the sediment budget resulted in the estimation of the accumulation rate at 8 m3 per one running meter per year in the coastal zone of area of the pipeline route. Sand accumulation leads to coastal accretion at the rate of 1 m per year. The obtained results lead to the conclusion on the stability of the coast in the coming decades unless the change of the sources of sand sediments and tendencies of its transport.
The South China sea continental slope morphology and its relation to the anomalous gravitational field
Authors: Leonova T. D. , Valitov M. G. , Belous O. V.
Published: November 2019

The bottom topography of the studied area of the South China Sea is characterized by an uneven distribution of depths, their sharp variations and the presence of a large number of seamounts. As a result of the research conducted, bathymetric profiles, a bathymetric map and a scheme of Faye anomalies were compiled. Geomorphological zoning was conducted. Sections of bottom distinguished by morphology were identified: 1) weakly dissected slope, steep (angles up to 15) in the upper part and more gentle (57) to the bottom of the deep-water step, 2) slope eroded by fluvial processes, 3) stepped slope, 4) chains of mountains and flat-topped hills, 5) accumulative bottom of the deep-water plain. It was established that the gravitational field as a whole reflects the complex structure of the bottom, and the local forms of the underwater relief are expressed in Faye anomalies. For elevations, zones of positive anomalies of Faye are marked, and sections of canyon-like valleys were mapped by an intense negative anomaly of the gravitational field to -60 mGal. In the process of endogenous evolution of the region, the relief became more complex. The primary endogenous continental slope was almost everywhere transformed by exogenous processes. Within the shelf, the filling of the basin led to the unification of all its projections into a single raised base. A significant role in the formation of the modern relief was played by large-scale repeated sea regressions, as a result of which the formation of the sedimentary cover was interrupted by periods of its erosion with the formation of planation surfaces. The Late Pleistocene peak of the regression (1618 thousand years BP), which caused the complete drainage of the shelf areas of the region, caused the erosion of the shelf and the movement of coarse clastic material through submarine canyons and valleys.
Evaluating serum C-reactive protein level in patients with chronic obstructive pulmonary disease – A cross-sectional study
Authors: M Karthika , Bhardwaj Prakash Chandra , Sharma Laimayum Amarnath , Sharma Laimayum Amarnath , Kanan W , Singh W Asoka
Published: November 2019

Abstract

Patients with the chronic obstructive pulmonary disease have ongoing systemic inflammation, which can be assessed by measuring serum  C- reactive protein.

Objective: To explore whether CRP could be used as an independent predictor of disease outcome in COPD.

Methods: A cross-sectional study was conducted among 50 COPD patients attending Respiratory Medicine outpatient services in the Regional Institute of Medical Sciences (RIMS), Imphal from January 2015 to September 2016. Patients aged 18-67 were included in the study after obtaining Ethical approval from the Research Ethics Board, RIMS, Imphal. Computerized Spirometer Helios 401 was the instrument used to measure lung volumes and capacities. BeneSpheraTM CRP Latex Slide test kit was used to estimate serum c-reactive protein.

Results and observation: The present study was conducted on fifty COPD patients in which serum CRP level showed positive correlation with COPD (p=0.002) but serum CRP level with spirometric parameters showed significant negative correlation;FEV1 (r=-0.451, p=0.001), FEV1/FVC (r=-0.617, p<0.001) and PEFR (r=-0.398, p=0.004).

Conclusion: In our study, we found an association between serum CRP level and severity of COPD and Plasma CRP may be used as a marker of prognosis in COPD as the small increase is associated with poorer prognosis in COPD.

Keywords: CRP; Chronic obstructive pulmonary disease (COPD); Imphal.
Combining explanation and argumentation in dialogue
Authors: Bex Floris , Walton Douglas
Published: November 2019

Explanation and argumentation can be used together in such a way that evidence, in the form of arguments, is used to support explanations. In a hybrid system, the interlocking of argument and explanation compounds the problem of how to differentiate between them. The distinction is imperative if we want to avoid the mistake of treating something as fallacious while it is not. Furthermore, the two forms of reasoning may influence dialogue protocol and strategy. In this paper a basis for solving the problem is proposed using a dialogue model where the context of the dialogue is used to distinguish argument from explanation.
Stock chatter: Using stock sentiment to predict price direction
Authors: Rechenthin Michael , Street W. Nick , Srinivasan Padmini
Published: November 2019

This paper examines a popular stock message board and finds slight daily predictability using supervised learning algorithms when combining daily sentiment with historical price information. Additionally, with the profit potential in trading stocks, it is of no surprise that a number of popular financial websites are attempting to capture investor sentiment by providing an aggregate of this negative and positive online emotion. We question if the existence of dishonest posters are capitalizing on the popularity of the boards by writing sentiment in line with their trading goals as a means of influencing others, and therefore undermining the purpose of the boards. We exclude these posters to determine if predictability increases, but find no discernible difference.
Dynamical trading mechanisms in limit order markets
Authors: Wang Shilei
Published: November 2019

This work's main purpose is to understand the price dynamics in a generic limit order market, and illustrate a dynamical trading mechanism that can be applied to explore its market microstructure. First and foremost, we capture the iterative nature of the limit order market, and quantitatively identify its capacities as a means to develop switching schemes for the appearances of different sorts of traders. After formally introducing a dynamical trading system to replace the complex limit order market, we then study trading processes in that trading system from both deterministic and stochastic perspectives, in the purpose of recognizing conditions of general instability and stochastic stability in the trading system. In the final part of this work, the dynamics of the spread and mid-price in a controlled trading system will be investigated, which fairly serves to verify the robustness of stochastic stability appearing in an uncontrolled trading system.
The topology of macro financial flows: An application of stochastic flow diagrams
Authors: Calkin Neil J. , López de Prado Marcos
Published: November 2019

A large portion of Macroeconomic and Financial research is built upon classical applications of Linear Algebra (such as regression analysis) and Stochastic Calculus (such as valuation models). As a result, most Macroeconomic and Financial research has inherited a focus on geometric locations rather than logical relations. Ideally, Econometric models could be complemented with Topological and Graph-Theoretical tools that recognize the hierarchy and relationships between system constituents. Stochastic Flow Diagrams (SFDs) are topological representations of complex dynamic systems. We construct a network of financial instruments and show how SFDs allow researchers to monitor the flow of capital across the financial system. Because our approach is dynamic, it models how and for how long a financial shock propagates through the system. Practical applications include stress-testing of investment portfolios under user-defined scenarios, and the discovery of Macro trading opportunities. SFDs add Topology to the Econometric toolkit used by Macroeconomists, and may enlighten perennial controversies, such as the one involving Keynesians and Austrian-school economists. Our findings have important implications for regulators, market designers and Macro investors.
Linear-time accurate lattice algorithms for tail conditional expectation
Authors: Chen Bryant , Hsu William W.Y. , Ho Jan-Ming , Kao Ming-Yang
Published: November 2019

This paper proposes novel lattice algorithms to compute tail conditional expectation of European calls and puts in linear time. We incorporate the technique of prefix-sum into tilting, trinomial, and extrapolation algorithms as well as some syntheses of these algorithms. Furthermore, we introduce fractional-step lattices to help reduce interpolation error in the extrapolation algorithms. We demonstrate the efficiency and accuracy of these algorithms with numerical results. A key finding is that combining the techniques of tilting lattice, extrapolation, and fractional steps substantially increases speed and accuracy.
Splitting and matrix exponential approach for jump-diffusion models with Inverse Normal Gaussian, Hyperbolic and Meixner jumps
Authors: Itkin Andrey
Published: November 2019

This paper is a further extension of the method proposed in Itkin (2014) as applied to another set of jump-diffusion models: Inverse Normal Gaussian, Hyperbolic and Meixner. To solve the corresponding PIDEs we accomplish few steps. First, a second-order operator splitting on financial processes (diffusion and jumps) is applied to these PIDEs. To solve the diffusion equation we use standard finite-difference methods. For the jump part, we transform the jump integral into a pseudo-differential operator and construct its second order approximation on a grid which supersets the grid used for the diffusion part. The proposed schemes are unconditionally stable in time and preserve positivity of the solution which is computed either via a matrix exponential, or via its Páde approximation. Various numerical experiments are provided to justify these results.
Predictable markets? A news-driven model of the stock market
Authors: Gusev Maxim , Kroujiline Dimitri , Govorkov Boris , Sharov Sergey V. , Ushanov Dmitry , Zhilyaev Maxim
Published: November 2019

We attempt to explain stock market dynamics in terms of the interaction among three variables: market price, investor opinion and information flow. We propose a framework for such interaction and apply it to build a model of stock market dynamics which we study both empirically and theoretically. We demonstrate that this model replicates observed market behavior on all relevant timescales (from days to years) reasonably well. Using the model, we obtain and discuss a number of results that pose implications for current market theory and offer potential practical applications.
Multi-scale capability: A better approach to performance measurement for algorithmic trading
Authors: Cooper Ricky , Ong Michael , Van Vliet Ben
Published: November 2019

This paper develops a new performance measurement methodology for algorithmic trading. By adapting capability from the quality control literature, we present new criteria for assessing control, expected tail loss and risk-adjusted performance in a single framework. The multi-scale capability measure we present is more descriptive and more appropriate for algorithmic trading than the traditional measure used in finance. It is robust to non-normality and the multiple time horizon decision processes inherent in algorithmic trading. We also argue that an algorithmic trading strategy, indeed any investment strategy, which satisfies the criteria to be multi-scale capable also satisfies any definition of prudence. It will be unlikely to harm the investor or external market participants in the event of its failure, while providing a high likelihood of satisfactory risk-adjusted performance.
Market sentiment and exchange rate directional forecasting
Authors: Plakandaras Vasilios , Papadimitriou Theophilos , Gogas Periklis , Diamantaras Konstantinos
Published: November 2019

The microstructural approach to the exchange rate market claims that order flows on a currency can accurately reflect the short-run dynamics of its exchange rate. In this paper, instead of focusing on order flows analysis we employ an alternative microstructural approach: We focus on investors' sentiment on a given exchange rate as a possible predictor of its future evolution. As a proxy of investors' sentiment we use StockTwits posts, a message board dedicated to finance. Within StockTwits investors are asked to explicitly state their market expectations. We collect daily data on the nominal exchange rate of four currencies against the U.S. dollar and the extracted market sentiment for the year 2013. Employing econometric and machine learning methodologies we develop models that forecast in out-of-sample exercise the future direction of the four exchange rates. Our empirical findings reject the Efficient Market Hypothesis even in its weak form for all four exchange rates. Overall, we find evidence that investors' sentiment as expressed in public message boards can be an additional source of information regarding the future directional movement of the exchange rates to the ones proposed by economic theory.
Forecasting prices from level-I quotes in the presence of hidden liquidity
Authors: Avellaneda Marco , Reed Josh , Stoikov Sasha
Published: November 2019

Bid and ask sizes at the top of the order book provide information on short-term price moves. Drawing from classical descriptions of the order book in terms of queues and order-arrival rates (Smith et al., 2003), we consider a diffusion model for the evolution of the best bid/ask queues. We compute the probability that the next price move is upward, conditional on the best bid/ask sizes, the hidden liquidity in the market and the correlation between changes in the bid/ask sizes. The model can be useful, among other things, to rank trading venues in terms of the “information content” of their quotes and to estimate hidden liquidity in a market based on high-frequency data. We illustrate the approach with an empirical study of a few stocks using quotes from various exchanges.
Behavioral biases and investor performance1
Authors: Feldman Todd
Published: November 2019

Research indicates that individual investors trade excessively and underperform the market indices, Barber and Odean (2000). The purpose of this paper is to help explain which behavioral biases, if any, can explain this result using a simulation approach. Results indicate that putting too much weight on the current environment, anchoring, is the largest factor in explaining individual investor underperformance. In addition, loss aversion is the largest factor to explain excessive trading. When these two biases are combined trading activity and underperformance are heightened.
Tweets and peers: defining industry groups and strategic peers based on investor perceptions of stocks on Twitter
Authors: Sprenger Timm O. , Welpe Isabell M.
Published: November 2019

Delineating industry groups of related firms and identifying strategic peers is important for both financial practitioners and scholars. Our study explores whether the degree to which pairs of companies are associated with each other in an online stock forum is related to the comovement of their stocks. We find that our news-based measure of relatedness can explain stock returns with the same power as the established SIC classification scheme. We investigate, whether our method can serve to define strategic peer groups and conclude that news-based relatedness can help delineate meaningful industry groups.
The Impact of Asymmetry on Expected Stock Returns: An Investigation of Alternative Risk Measures
Authors: Huffman Stephen P. , Moll Cliff R.
Published: November 2019

We investigate the relation between various alternative risk measures and future daily returns using a sample of firms over the 1988-2009 time period. Previous research indicates that returns are not normally distributed and that investors seem to care more about downside risk than total risk. Motivated by these findings and mixed empirical evidence supporting theoretical positive risk-return relationship, we model the relation between future returns and risk measures and investigate the following questions: (1) Are investors compensated for total risk and/or asymmetric measures of risk? (2) How does the degree of risk aversion in the lower tail of the return distribution impact the predictability of future returns? (3) Is upside risk or downside risk a better predictor of future returns? We find that, although investors seem to be compensated for total risk, measures of downside risk, such as the lower partial moment, are better at explaining future returns. Further, when comparing downside risk to upside risk, we find that investors are more concerned about downside risk. That is, downside risk is a better predictor of future returns. Our results are robust to the addition of traditional control variables, including size, book-to-market ratio of equity (B/M), leverage, and market risk measures, including beta, downside beta and co-skewness. Our findings are an important contribution to the literature as we document a positive risk-return relationship, using both total and asymmetric measures of risk.
Inventory-based versus Prior-based Options Trading Agents
Authors: Othman Abraham , Sandholm Tuomas
Published: November 2019

Options are a basic, widely-traded form of financial derivative that offer payouts based on the future price of an underlying asset. The finance literature gives us option-trading algorithms that take into consideration information about how prices move over time but do not explicitly involve the trades the agent made in the past. In contrast, the prediction market literature gives us automated market-making agents (like the popular LMSR) that are event-independent and price trades based only on the inventories the agent holds. We simulate the performance of five trading agents inspired by these literatures on a large database of recent historical option prices. We find that a combination of the two approaches produced the best results in our experiments: a trading agent that keeps track of previously-made trades combined with a good prior distribution on how prices move over time. The experimental success of this synthesized trader has implications for agent design in both financial and prediction markets.
Pengetahuan, Status Hidrasi, Persen Lemak Tubuh, Kadar Hemoglobin, dan Kebugaran Atlet Senam
Authors: Ghalda Ayu , Gifari Nazhif , Nadiyah Nadiyah
Published: November 2019

AbstractPhysical fitness is the ability of a person body to do a day work without feeling significant fatigue, that the body has a reserve of energy to overcome the excessive workload. The purpose of this study was to determine the relationship between hydration knowledge, hydration status, body composition, hemoglobin level with physical fitness in gymnastics athletes. This study was design a cross sectional study at GOR Raden Inten East Jakarta. Independent variables were hydration knowledge, hydration status, body composition (percent of body fat) and hemoglobin level, while the dependent variable was physical fitness. The statistical test used in this study was the spearman correlation test, because the dependent variable in this study was abnormally distributed. The results of this study were that there was no significant relationship between hydration knowledge and physical fitness (r = 0.181; p > 0.05), there was no significant relationship between hydration status and physical fitness (r = -0,440; p = 0,052), there was no relationship significant between body composition (percent of body fat) and physical fitness (r = 0,351; p > 0.05), and there was a significant relationship between hemoglobin level and physical fitness (r = 0,600; p < 0.05). The conclusion in this study, there was a significant relationship between hemoglobin level and physical fitness.Kebugaran jasmani merupakan kemampuan tubuh seseorang untuk melakukan suatu pekerjaan sehari-hari tanpa merasakan kelelahan yang cukup berarti, sehingga tubuh itu sendiri memiliki cadangan energi untuk mengatasi beban kerja yang berlebih. Tujuanpenelitian ini untuk mengetahui hubungan pengetahuan hidrasi, status hidrasi, komposisi tubuh, kadar hemoglobin dengan kebugaran pada atlet senam. Penelitian ini adalah penelitian kuantitatif dengan desain penelitian cross sectional yang dilakukan di GOR Raden Inten Jakarta Timur. Variabel independen yaitu pengetahuan hidrasi, status hidrasi, komposisi tubuh (persen lemak tubuh)dan kadar hemoglobin, sedangkan variabel dependen yaitu kebugaran.  Uji statistik yang digunakan dalam penelitian ini menggunakan uji korelasi spearman, karena variabel dependen pada penelitan berdistribusi tidak normal. Hasil dari penelitian yaitu tidak terdapat hubungan yang signifikan antara pengetahuan hidrasi dan kebugaran (r=0,181; p>0,05), tidak terdapat hubungan yang signifikan antara status hidrasi dan kebugaran (r=-0,440; p>0,05), tidak terdapat hubungan yang signifikan antara komposisi tubuh dan kebugaran (r=0,351; p>0,05) dan terdapat hubungan yang signifikan antara kadar hemoglobin dan kebugaran (r=0,600; p<0,05). Kesimpulan dalam penelitian ini yaitu terdapat hubungan yang signifikan antara kadar hemoglobin dengan kebugaran atlet.
KETERKAITAN ANTARA SANITASI PONDOK PESANTREN DENGAN KEJADIAN PENYAKIT YANG DIALAMI SANTRI DI PONDOK PESANTREN SUNAN DRAJAT
Authors: Adriansyah Agus Aan
Published: November 2019

Health requirements boarding school environment basically consists of a few things such as construction and general sanitary conditions, basic sanitation facilities, food management, and so on. With good environmental health, health risks and other risks will be avoided. Almost 80% of disease in the boarding school due to the health condition of the environment. Good conditions will also improve the aesthetics of the boarding school. This research was analitic study that held observationally with cross sectional design and used quantitative approach. Sample in this research was male religious pupil of Sunan Drajat Islamic Boarding School with MTS level of education. Sample numbers were 97 religious pupil that was collected from population with proportional random sampling. Variable test held using correlation analysis method. Correlation test results or the r value indicates the value of 0.792. Thus it can be interpreted that there is a strong relationship between sanitation and disease incidence in Pondok Pesantren Sunan Drajat. Therefore, it is necessary to increase the quality and quantity of islamic boarding school sanitation to increase the health of religious pupil. The method that can be done is by providing the islamic boarding school facilities or religious pupil room that appropriate with standard and the improvement of basic sanitation facilities of islamic boarding school such as the providing of bathroom/toilet.
PENGARUH KEBUTUHAN GIZI TERHADAP PERUBAHAN BERAT BADAN IBU HAMIL DI DESA PETIS RT 02 RW 02 KECAMATAN DUDUK SAMPEYAN KABUPATEN GRESIK
Authors: Setiyowati Eppy , Emilyati Desi
Published: November 2019

Pregnancy caused by changes in body weight of pregnant women, which is not significantly impact on the growth of the fetus in the womb, experiencing anemia and low birth weight. The purpose of this study analyzed the nutritional needs of pregnant mothers to changes in maternal and fetal body weight in the Village District of RW 02 Petis Duduk Sampeyan Gresik. Analytical study design with cross sectional study design. The population is all pregnant women in the village of RT 02 RW 02 Petis Sitting Sampeyan District of Gresik by 33 people. Sampling sampling techniques with simple random sampling. The instrument uses observation. This variable is the nutritional needs of pregnant women and changes in maternal and fetal body weight. Data were analyzed with the Mann-Whitney test with α = 0.05. The result showed the majority (66.7%) of respondents need good nutrition. Aswell as the vast majority (66.7%) of respondents normal weight. It can be concluded that there is influence the nutritional needs of pregnant mothers to changes in maternal and fetal body weight in the Village District of RW 02 Petis Sitting Sampeyan Gresik. More nurses can improve the promotion program to improve maternal and fetal body weight through promotion and education in local communities about the importance of maternal and fetal weight.
PENGARUH UMUR KEHAMILAN USIA REMAJA, PENGETAHUAN IBU TENTANG ANEMIA, DAN STATUS GIZI TERHADAP KEJADIAN ANEMIA DI KECAMATAN SAWAHAN KOTA SURABAYA
Authors: Putri Pratiwi Hariyani
Published: November 2019

Pregnancy in adolescence has high enough of medical risk. Because in adolescence, their reproductive organs are not ripening enough to do its function. The effect of anemia in pregnancy, especially during adolescence age, can cause harm during pregnancy. The purpose of this research is to analyse the effect of gestational age, knowledge of mothers about pregnancy, and nutritional status on anemia in adolescence pregnancy in Sawahan District of Surabaya City. This research type was analitic observational. The research design used is case control design because the using of 2groups of cases, which are case and control group with 52 pregnant mother in each group. The result of this research which has been analyzed with double logistic regression, the variable which has significant score less than 0,05 among others: gestation pregnancy (p=0,000), It can be concludedthat pregnant mother in trimestry 3 have anemia probability 8,85 (1/0,113) times larger than pregnant mother in trimestry 2. There is influence of third trimester adolescence pregnancy to the occurrence of anemia.
PENGARUH NORMAL FLORA Streptococcus sp. KARANG GIGI TERHADAP PEMERIKSAAN DARAH LENGKAP PADA MAHASISWA UNIVERSITAS NAHDLATUL ULAMA SURABAYA
Authors: Anggraini Rahayu , Hanik Umi , Nugraha Gilang , Pertiwi Dwi Lestari
Published: November 2019

This study aims at determining the normal flora of Streptococcus sp., the inhabitants of the oral cavity in the tartar that can lead to health problems. This study is an observational study with cross sectional analytic approach performed on 47 samples of dental smear for Streptococcus sp. bacteria identification and EDTA blood samples for Hemoglobin level examination, hematocrit percent, the number of erythrocytes, leukocytes and platelets in University of Nahdlatul Ulama Surabaya students. The result of Independent Samples T Test data analysis in a cut point showed that the levels of hemoglobin, number of leukocytes and platelets look significantly different with p <0.05in individuals with normal flora Streptococcus alpha and Streptococcus gamma. The conclusion in this study, in individuals with normal flora Streptococcus alpha, can decrease hemoglobin level, whereas in individuals with normal flora Streptococcus gamma can increase the number of leukocytes and decrease the number of platelets.
PENGARUH ROLLING MASSAGE PUNGGUNG TERHADAP PENINGKATAN PRODUKSI ASI PADA IBU NIFAS
Authors: Ekawati Heny
Published: November 2019

The postpartum period is the beginning of lactation. New born babies should be able to suckle to his mother, but what happens in the field early in the postpartum period baby is difficult to suckle to his mother. Primary survey data on the first week of the postpartum period found 75% show that his milk is not yet fluent. The purpose of this study was to determine the effect of rolling back massage to increase milk production in postpartum mothers. Design of this study uses quasi experimental method with time series approach. With consecutive sampling technique. The samples are 30 respondents with control group. An instrument used is observation sheet of baby’s urine frequency first until third days. Data analysis using repeated anova test.Based on the results of this study on the babys urine frequency on control group had a mean of 5.8. While the mean of intervention group was 7.3. The results of statistical tests using Repeated Anova test,  = 0.001 ( <0.05) which means there is the effect of rolling back massage to increase milk production in postpartum mothers. Based on the results of these studies it is known that the back rolling massage can be used as an alternative to increase milk production in postpartum mother in BPS, Puskesmas or Hospital.
GAMBARAN POLA MAKAN DAN AKTIVITAS FISIK PENDERITA DIABETES MELLITUS DI RW 01 KELURAHAN JAGIR SURABAYA
Authors: Herdiani Novera
Published: November 2019

Diabetes Mellitus (DM) is a group of hitrogen disorder characterized by the increased of blood glucose level or hyperglycemia. The number of Diabetes Mellitus patients in 2000 in Indonesia got the biggest 4 rank with prevalence of 8.4 million inhabitants. Therefore, handling Diabetes Mellitus needs diet and exercise to control the disease. The purpose of this study is to find out the description of eating and physical activity patterns of Diabetes Mellitus sufferers in RW 01, Kelurahan JagirSurabaya. The design of the study used was cross-sectional, the sample was 56 people. The variable in this study was eating and physical activity patterns of Diabetes Mellitus patients. The data were collected through questionnaires, then the statistical data were processed descriptively by using common. The result of the study of Eating pattern of Diabetes Mellitus sufferers, 54% of the patients had lack of the calories needs in a day, based on the fulfillment of the diet schedule 70% did notconduct an eating schedule and based on the consumption of sweet foods 68%. The result of physical activity of the diabetics whose age was <30 years was varied 33.33% with the result of less physical activity and optimal physical activity as 4 people (57.14%). The result which was varied that 50% had high school education with less physical activity. Based on the result, it is concluded that all Diabetes Mellitus sufferers (100%) have not met a good eating pattern, physical activity patterns of Diabetes Mellitus patients (30%) have` less physical activity.
安拉沟水库工程整体式面板坝施工分析
Authors: 王 超
Published: November 2019

安拉沟水库坝体迎水面面板分为主坝整体式钢筋砼面板和副坝分离式面板。文章结合笔者工作经验及该水库的实际情况，分析了水库工程整体式面板坝的设计参数，然后给出了详细的施工程序，包括面板分期施工及面板分缝技术交底两个部分，并提出了施工要求和出现面板浇筑缺陷时的具体补救措施，最后制定了安全防范措施，从而为今后更好的开展同类工作提供有效的参考。
电力工程建设项目管理存在的问题和精细化管理策略
Authors: 吴 伯言
Published: November 2019

电力工程建设项目的管理质量直接关系到电力工程投入使用后的运行安全与服务质量，当前我国电力工程建设项目的管理虽然取得了诸多的成就，但是依然存在若干问题，影响了质量的进一步提升，因此笔者结合自身工作经验，探讨当前电力工程建设项目管理过程中存在的问题，并给出精细化管理的应用策略，为今后更好的开展项目管理工作提供参考。
浅谈水文与水资源的现状及解决措施
Authors: 达 瓦泽仁
Published: November 2019

当前国内水资源短缺严重，可利用水资源日益减少，水污染问题的处理也迫在眉睫，所以必须重视水文与水资源的现状调查，并在此基础上提出解决措施，从而提高我国水资源利用效率，更好的保护水资源。
水利水电工程施工质量与安全管理问题分析
Authors: 上官 云松
Published: November 2019

在社会快速发展的过程中，水利水电工程的作用越发的凸显出来。水利水电工程因为涉及到的层面较多，所以具有明显的复杂性，并且需要运用到多个领域的专业知识。在现如今水利水电工程建造中，还存在着诸多的问题，严重的影响到了工程施工的质量。鉴于此，相关部门务必要加大力度对水利水电工程安全和质量给予重点关注，促进施工安全和质量的提升。
直流电法在小窑采空区的应用研究
Authors: 金 小川 , 吕 相军 , 张 青
Published: November 2019

文中依托于横峰县罗家小窑采空区物理勘探工作，其目的在于查明勘察区地下小窑采空区分布、厚度和埋深等。采用DZD-6A型多功能直流电法仪开展电阻率测深和联合剖面电法工作，通过在工作区范围布置的七条测线对采空区进行监测。对物探数据进行处理形成图像，并对物探异常现象进行了合理的解释推断出采空区的分布情况。
基于电力信息采集的计量管理
Authors: 王 绩一 , 王 曦
Published: November 2019

目前的电力系统正处于深化改革的过程之中，电力能源对经济社会的发展和进步产生了巨大的推动作用，为我国的各行各业的繁荣做出了不可替代贡献。在陈振华迅速发展的今天，电力能源已经深入到人们生活以及工作的方方面面，可以说，没有电力能源的稳定供应，城市就不能稳定的运行。收集电力能源的各种数据信息对于电力能源的稳定供应是非常关键的，这套数据收集系统主要包括收集和处理用户用电信息，以及对电力能源用户的用电情况进行实时监测。除了监测电源供应的稳定性以及质量外，它还用智能化、信息化的管理手段对电源使用情况进行分析。对电力能源的使用数据进行收集和分析，关系到后续的电量计量管理工作。为了提升电力信息采集和计量工作的质量，在数据收集和分析工作进行的同时必须积极联系用电企业，结合他们的实际用电情况，以便更为科学的做好电力数据收集和分析工作，提升工作效率，促进企业的经济效益的实现。
试分析热力发电厂汽轮机设备安装与检修
Authors: 朱 磊
Published: November 2019

蒸汽轮机是1950年代左右被引入中国的一种动力机械。在热力能源应用的各个领域它都占据着重要的地位，例如火力发电和集中供暖等等。蒸汽轮机是一种结构较为复杂且精密的重型动力机械设备，可以有效的将蒸汽热能转换为机械的动能。而且这种机械设备非常耐久，具有较长的使用寿命，热能的转化率也比较高等显著的优点，蒸汽轮机在火力发电厂中使用最普遍的凝汽式的蒸汽轮机。