bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parental mental health and risk of poor mental health and death by suicide in offspring
Authors: Maguire Aideen , Tseliou Foteini , O'Reilly Dermot 
Published: August 2018

BackgroundSuicide is a major public health concern. Identifying those most at risk is vital for effective targeting of interventions. Mental health (MH) has a genetic component and parental MH is associated with child’s MH. However, little is known onthe effect of parental MH on a child’s risk of death by suicide.
MethodsData from 2011 Northern Ireland Census was linked to 5 years’ death records (2011-2015) to construct multi-level regression models to determine if children living with parents with poor self-rated MH are at an increased risk of poor MH themselves and an increased risk of death by suicide.
Results618,970 individuals live with their parents; with almost 1 in 7 (13.7%) living with parents with poor MH and 225 (0.1%) dying by suicide during follow-up. Interim results suggest after full adjustment, children with 2 parents with poor MH were5 times more likely to have poor MH themselves (OR=5.30, 95% CI 4.62,6.09), and children with 1 parent with poor MH were 67% more likely to die by suicide compared to children of parents with good MH (OR=1.67, 95%CI 1.19, 2.33).
ConclusionsParental MH is associated with child suicide risk even after adjustment for their own MH status.
Permanently Progressing? Building Secure Futures for Children in Scotland: Linking two national datasets about looked after children in Scotland to enhance understanding of pathways to permanence
Authors: Hooper Jade , Cusworth Linda , Whincup Helen 
Published: August 2018

BackgroundPermanently Progressing? is the first cohort study in Scotland aimed at understanding the factors associated with achieving settled and secure permanent homes for children. One part of this study involves analysing the national Children Looked After Statistics (CLAS) collected by the Scottish Government, to follow a group of children who became ‘looked after’ or ‘looked after and accommodated’ aged five or under. However, important decisions about these children are made at Children’s Hearings and the information about these decisions is stored in a database collated by the Scottish Children’s Reporters Administration (SCRA).
ObjectivesAs these two datasets have never before been linked, the researchers aim to test the feasibility and success of this linkage. In addition, analysis of the linked dataset will allow both a description of the pathways of children who became looked after in 2012-13, and a comparison of the pathways for children who have achieved permanence at the end of year 4 to those who are on a pathway to permanence, and those still accommodated with no evident permanence plan.
MethodsIn this project, the anonymised CLAS data obtained from the Scottish Government are being brought together with anonymised data held by SCRA, using probabilistic linkage methodologies.
FindingsThe linkage and analysis of this data is currently underway and will be discussed during this presentation.
ConclusionsIf successful, this linkage will serve as a pilot study for future research, help inform policy and practice, and enable the researchers to gain a more in-depth picture of a child’s journey through the system and the factors associated with children achieving permanence. The success of this linkage and challenges encountered will be discussed.
A Mathematical "Screw-Nut" Connection Model for the Universal Software to Analyse Dynamical Systems
Authors: Martynyuk V. A. , Trudonoshin V. A. , Fedoruk V. G. 
Published: August 2018

The article deals with a mathematical model of the "screw-nut" connection adapted for using in universal software systems to analyse dynamic characteristics. This article is sequel to a number of earlier authors-written articles devoted to object simulation of 3D mechanics. Such a model available in the library of mathematical models of the modelling system will significantly extend the list of simulated mechanisms. The mathematical model of "screw-nut" connection suggests such a connection between absolutely rigid bodies. The "screw-nut" connection parameters are the following:thread pitch by the radian of the angle of pitch;coordinates of the point on the axis of the screw in the local coordinate system of the body 1;direction cosines of the screw axis in the local coordinate system of the body 1.Note that the connection parameters have constant values. Two drawbacks of this model should be noted.1. Some expressions of the mathematical model involve dividing by direction cosine of the screw axis thereby eliminating "division by zero" when the axis of the screw is perpendicular to the x-axis of the global coordinate system. The software-based way allows eliminating this shortcoming.2. The model does not include coordinates of mass centres of bodies tied by connection. This can lead to a significant "mismatch" in the position of the bodies in modelling of multi- periodic transient processes. However, adding an elastic model to the mathematical model can eliminate this drawback.The article demonstrates the "screw-nut" connection model to simulate a jack using the PA8 system and comparing its results with those obtained with help of the NX10 complex. Gives, in addition, the results of influence in terms of dry friction in the "screw-nut" connection. Taking into consideration the dry friction allows us to reflect the effect of "self-stopping" in the jack.
Choosing a 3D Printer with Parallel Kinematics for Independent Student Work
Authors: Samoylov V. B. 
Published: August 2018

Currently, there are a lot of offers of 3D printers on the market, which are used for educational purposes, but in the independent work of students (CDS) it is important not only the availability of bulk printing technologies, but also the visibility of these processes and the ability to directly influence them when working independently .The main criteria for choosing such devices are cost, openness of software and hardware, the possibility of modernization and repair, ease of maintenance and the minimum price of consumables, provided there is a sufficient level of reliable and accurate operation. The article analyzes seventeen models of 3D printers with parallel kinematics that meet the specified requirements, taking into account the technical specifications declared by the manufacturers. The design decisions of both individual units and devices as a whole are considered, the estimation of technological properties for use in the educational process is given, the methodology and actual recommendations for selecting a 3D printer are proposed.
The Choice Gas Turbine Engine Parameters Used to Drive the Oil Pump
Authors: Brycheva A. Yu. , Molyakov V. D. 
Published: August 2018

The article considers capabilities of the gas turbine engine to be used as a drive of the crude oil pump. It is noted that the gas turbine drive proves to be more advantageous than the electric motor when there is no external power supply or building periods of power transmission lines are significantly long, as well as quantities of oil products pumped are often changed.The main objective of this work is to select the optimum engine cycle parameters for a particular pump model, which oil pumping stations use. As an object of research, a crude oil pump of the НМ 10000 / 1.25-210 brand was chosen. The paper presents technical characteristics of the HM 10000 / 1.25-210 centrifugal pump and experimental values of head, power, and efficiency of the pump for a number of feeds. To obtain the pressure and power characteristics of a centrifugal pump for different rotational speeds of the rotor the similarity formulas are used.As the centrifugal pump drive, the paper considers a two-shaft plant with the free power turbine. This scheme was chosen in accordance with the features of the gas turbine pump unit at the oil pumping station. It is noted that the free power turbine scheme allows us to bring into accordance the characteristics of a gas turbine engine and an oil pump in abnormal modes, since there is no mechanical connection between high and low pressure turbines.The paper presents the calculated parameters of the gas turbine engine cycle with power Ne = 8 MW. The graphs show dependence of the airflow rate GB, the specific fuel consumption Ce and the efficiency ηe on the degree of pressure increase πk in the compressor. In accordance with the graphs, the optimum value of the degree of pressure increase πk = 15 in the compressor is adopted. With πk = 15, the specific fuel consumption in the gas turbine engine with power Ne = 8 MW is equal to Ce = 0,22 kg/kW*h and the airflow rate is GB = 20,5kg/s. The efficiency of the engine with the selected parameters is ηe = 38,4%.It is noted that in order to ensure the most economical gas turbine engine operation, it is necessary to select the optimal control program, which is determined taking into account the load characteristics, in this case the characteristics of the pump.
Diode Circuit-based Glass Plasma-Chemical Etching Capabilities
Authors: Bugorkov K. N. , Saghatelyan H. R. 
Published: August 2018

The paper discusses technological capabilities to improve a plasma-chemical etching (PCE) rate of the silicate glasses through a chromium mask in the equipment with a planar inductor located outside, which forms a high-frequency diode system. Suggests a case when the inductor in the form of a planar spiral antenna is above the work-piece.The PCE process stages were analytically studied and the limiting effects of each step that affect the etching rate and the quality of the treated surface were determined. The paper shows that for the type of equipment under consideration the stage of removing etch products from the work-piece is a quality-limiting factor for the PCE-exposed surface while the limiting factor for the etching rate is the stage of formation of chemically active particles (CAP) in plasma.The comparison of analytical results with the experimental data shows that in the considered case plasma of low density and high pressure is formed. The experimentation was aimed at studying the impact of the surface position under treatment and the working pressure in the chamber on the etching rate and the peculiarities of the etched surface formation. As a treated material, the blanks of the photomasks for integrated circuits made from Cr-covered silicate glass were considered. The electron beam lithography method was used to create a mask for the PCE process.It was experimentally found that when a treating surface of the work-piece in plasma is “downward” the etching depth is by 5-10% more than the etching depth of the “upward” surface. Another finding was that with raising gas flow the etching depth was twice increased as well.Optical-microscopic examinations of the etched surfaces of work-pieces have shown that there are areas with green or brown coating. Supposedly, this is due to the effect of the reverse deposition of the mask material as in the form of CrF3, CrF4 compounds that reinforce the need to look for a replacement of the chrome mask.The etching rates of 45-90 nm/min are obtained for the silicate glass, which is close in composition to the optical glass of K8 grade. This allows using the PCE in the equipment with a planar inductor located outside the chamber and realizing a high-frequency diode circuit to produce diffraction and hologram optical elements with a depth of the surface relief up to 400-500 nm.
Multiple-criteria Decision-making Support Based on the Multi-Indicator Evaluation of the Pareto-Approximation Quality
Authors: Groshev S. V. , Karpenko A. P. 
Published: August 2018

The paper considers a problem, which is defined as multi-indicator finding the "best" algorithm to solve a multiple-criteria optimization (MCO) problem. Of a large number of known algorithms for solving the MCO, we deal with the algorithms based on the preliminary construction of its Pareto front (set) approximation and called P-algorithms.Because of a large number of P-algorithms, a problem of choosing the "best" algorithm for the given MCO problem (and / or this class of these problems) arises, i.e. a meta-optimization problem. We pose the problem of structural meta-optimization of P-algorithms, which suggests a simultaneous P-approximation construction and optimization of this approximation according to one or several P-indicators.The paper presents basic MCO-problem formulation and describes used P-approximation quality indicators. Considers several methods to choose the "best" P-algorithm such as a method based on using one or another method to visualize multi-indicator estimates of P-approximation quality, a method based on the scalar convolution of P-approximation quality indicators, chosen by a decision-maker (DM), and an author's automated method that supposes a preliminary approximation of the function of preference. Provides mathematical description, considers advantages and disadvantages, as well as shows the ways to overcome these shortcomings.The main research result involves a development of the original PREF-I method to solve the MCO problem based on identification of so-called DM’s function of preference. This method may be thought as evolution of the PREF method aimed at solving the initial MCO problem.
Performance Evaluation of the Vehicle Vibration Safety in the Frequency Domain
Authors: Zheglov L. F. , Fominykh A. B. 
Published: August 2018

The article deals with mathematical modelling of the nonlinear system of vehicle vibration isolation. It is known that this problem can be solved both in the frequency and in the time domains. To assess the adequacy of the results obtained, a computation algorithm for evaluated performances in the frequency domain is considered at the first stage of the study. In this case, a statistical linearization procedure is used through the example of a spatial dynamic model equivalent to the primary and secondary vibration isolation systems of a two-axle vehicle (a dynamical system with seventeen degrees of freedom). A matrix method for determining the frequency characteristics of a given dynamical system is used, and the adaptation features of four known methods of statistical linearization are shown. The article focuses attention on advantages of the system frequency representation when testing it and determining the main parameters. In order to generalize the conclusions when comparing the calculation results in the frequency and time domains, computations were performed for two variations of the intensity of the disturbing action. Such a "hard-line" approach enables us to determine the impact of the nonlinear characteristics of the vibration isolation system components on the output integral and separate-frequency performance estimates, taking into account a vehicle's safety criterion.The simulation results of this system show different values of the integral and separate-frequency estimates for all four methods of statistical linearization, regardless of the intensity of disturbing action and the loss probability of contact between the tire and the wearing surface from 5% to 30%. The calculation data obtained allow comparing with the mathematical modelling results of the given dynamical system in the time domain and defining position according to recommendation of the statistical linearization method.
The Outgoing and Incoming Network Packets Intercepting Method
Authors: Filippov M. V. , Ryazanova N. Yu. , Ryazantsev B. I. 
Published: August 2018

In connexion with the rapidly growing computer network information capacities, information security of local networks connected with global networks becomes a critical challenge. One of the information security aspects is to control and filter the network traffic by intercepting the incoming and outgoing network packets. This is accomplished owing to firewalls. The Linux kernel 2.4.x included the Netfilter firewall and the iptables utility, which allow us to analyse only the packets headers and their pertaining to specific network connections. In addition, the practice of rewriting the Linux kernel codes complicates the maintenance of the software targeting for this firewall.The article proposes a network packet intercepting method based directly on the structures and functions of the kernel, so it has no restrictions associated with the inherent Netfilter/iptables functionality. To provide intercepting, are used the struct net_device structure of the kernel that describes a network device and the struct net_device_ops structure that lists operations possible on the network device and two functions: ndo_start_xmit and rx_handler used to process outgoing and incoming packets, respectively. These functions are rewritten in order to include new functionality into the kernel to meet the users’ requests. The use of the structures and functions of the kernel provides desirable stability, versatility, and adaptive capability of the developed software for users’ requests such as content analysis of data transmitted in packets, their encryption and decryption. The proposed method can be used to create firewalls of the next-generation to implement technology of deep packet inspection, as well as a complement to the available firewalls.
Feasibility Assessment of Urban Electricity Distribution Networks Transition to the Voltage Level of 20 kV
Authors: Kuzmina I. A. 
Published: August 2018

The article gives a feasibility assessment for increasing a voltage level of the urban electricity distribution networks from 6 and 10 kV to 20 kV.The emphasis is on the urban electricity distribution network in Moscow. It is noted that by now the reliability, efficiency and automation indicators of Moscow electrical grids are substantially lower than those of Europe, America, etc. The electrical grids in Moscow have a high wear and tear of equipment, a historically developed non-optimal structure, and a high loading level. In recent years, the situation has been significantly improved due to numerous government programs for the development of the electric power industry.It was noted that the high rate of development in Moscow resulted in a significantly increasing density of power loads. So modernisation of grids is a necessary-and-proper step to deliver electric power of good quality and in appropriate volume to all consumers. As the most promising option of such modernisation, the article’s proposal is to increase a voltage level of the electrical grid of medium voltage from 6 and 10 kV to 20 kV.The main advantages of the electrical grid transition to the higher voltage level is an increased power grid capacity and reduced losses of voltage and electric power when transmitting through the electrical grid elements. The article presents some calculations to prove decreasing several times losses in medium voltage cable lines. The shortcoming of the transition to an electrical grid of 20 / 0.4 kV is significant implementation costs, most of which will lead to increasing tariff for consumers.The experience of other countries examined in the article proves that increasing voltage level of the distribution network in Moscow and other megacities is expedient. At the same time, a gradual introduction of 20 / 0.4 kV substations to the electrical grid structure with a gradual unloading and elimination of 10 kV electrical grid elements is expected. The article appeals to successful experience available in the transition of large industrial enterprises to a voltage level of 20 / 0.4 kV.
Knn And Steerable Pyramid Based Enhanced Content Based Image Retrieval Mechanism
Authors: Singh Bohar , Aggarwal Mrs. Mehak 
Published: August 2018

Recently, digital content has become a significant and inevitable asset of or any enterprise and the need for visual content management is on the rise as well. There has been an increase in attention towards the automated management and retrieval of digital images owing to the drastic development in the number and size of image databases. A significant and increasingly popular approach that aids in the retrieval of image data from a huge collection is called Content-based image retrieval (CBIR). Content-based image retrieval has attracted voluminous research in the last decade paving way for development of numerous techniques and systems besides creating interest on fields that support these systems. CBIR indexes the images based on the features obtained from visual content so as to facilitate speedy retrieval. Content based image retrieval from large resources has become an area of wide interest nowadays in many applications. In this thesis work, we present a steerable pyramid based image retrieval system that uses color, contours and texture as visual features to describe the content of an image region. To speed up retrieval and similarity computation, the database images are classified and the extracted regions are clustered according to their feature vectors using KNN algorithm We have used steerable pyramid to extract texture features from query image and classified database images and store them in feature features. Therefore to answer a query our system does not need to search the entire database images; instead just a number of candidate images are required to be searched for image similarity. Our proposed system has the advantage of increasing the retrieval accuracy and decreasing the retrieval time.
Outcome of the multidimensional prognostic index in ultra-octogenarian patients hospitalized for cardiovascular diseases
Authors: Carriere Cosimo , Stolfo Davide , Baglio Valeria , Gerloni Riccardo , Merlo Marco , Barbati Giulia , Cannatà Antonio , Biolo Gianni , Sinagra Gianfranco 
Published: August 2018

Background
The multidimensional prognostic index (MPI) is a validated tool for prognostic stratification in acute and chronic setting of geriatric patients. However, only few data are available on patients with cardiovascular diseases.

Aim
To evaluate the potential role of MPI as predictor of 1-year and long-term outcome in ultra-octogenarians patients hospitalized for cardiovascular diseases.

Methods and results
We conducted a prospective study on 216 patients (mean age 85 ± 4 years) hospitalized for cardiovascular disease enrolled from September 2011 to February 2014 in both Cardiology and Internal Medicine Departments. The mean follow-up was 33 ± 7 months. The primary end-point was 1-year all-cause mortality. In addition, 3-year all-cause mortality was also assessed in the overall cohort and outcome prediction was then evaluated separately in patients with a primary diagnosis of heart failure and acute coronary syndrome. At admission, 53% of patients had a MPI-1 low risk, 34% had a MPI-2 moderate risk and 13% had a MPI-3 high risk (13%). Internal medicine inpatients had worse risk profile and higher MPI risk class than patients admitted to the cardiovascular department. Fifty-four patients (25%) experienced the primary end-point. In the multivariate logistic regression model MPI score [hazard ratio (HR) 1.83, 95% confidence interval (CI) 1.23–2.71, P = 0.003], serum creatinine (HR 1.32, 95% CI 1.13–1.54, P < 0.001) and serum albumin (HR 0.43, 95% CI, P = 0.04) were independent predictors of 1-year mortality. The area under the receiver operating characteristic combining the MPI score with serum creatinine and albumin was 0.83 (CI 0.15–0.59, P < 0.001).

Conclusion
In ultra-octogenarian inpatients hospitalized for cardiovascular disease, MPI score independently predicts a poorer outcome. An integrated model including MPI, serum creatinine and albumine might aid the prognostic stratification of hospitalized elderly populations.