bluuebunny/crossref_metadata_2025 huggingface dataset:
Quantitative Ethnobotanical Study, Phytochemical Screening and Antibacterial Assay of Ethnomedicinal Plants of T’boli In Lemsnolon, Tboli, South Cotabato
Authors: Campilan Joni Rey , Tumamac Marigold C. , Dorado Emma L.
Published: May 2019

Tbolis in Lemsnolon, Tboli, South Cotabato are one of the ethnic groups in the Philippines serving as repository of novel knowledge on ethnomedicine. On July 2014, a research was conducted among Tboli tribe in Lemsnolon to document the local knowledge on ethnomedicinal plants before environmental and cultural changes deplete the resources. Selected important ethnomedicinal plants were quantified through Relative Frequency Citation and Use Value. Selected important medicinal plants were screened for phytochemical constituents, and their antibacterial property was determined through paper disc diffusion method. A total of 28 medicinal plants belonging to 21 families were recorded, most are used for symptoms, signs and abnormal clinical and laboratory findings (13spp.) and certain infectious and parasitic diseases (5spp.). The most abundant medicinal plant families were Asteraceae (5spp.) and Euphorbiaceae (3spp.), the most dominant life forms of the species includes herbs (17spp.) followed by shrubs (4spp.), the most frequent used part were leaves (42%) followed by stems (11%), the most common preparation method was decoction (47%), the most common route of administration is through oral (66%). Artemisia vulgaris, Bryophyllum pinnatum, Elephantopus sp., Emilia sonchifolia, Ficus pseudopalma, Hyptis capitata, and Leucaena glauca have the highest RFC (0.29), E. sonchifolia has the highest Use Value (0.71).Selected important ethnomedicinal plants, Artemisia vulgaris, Costus malorticanus, Elephantopus sp., Emilia sonchifolia and H. capitata, were found to be rich in alkaloids while free fatty acids, flavonoids, tannins and anthraquinones were present in most of these selected plants. However, ethanolic extracts of the selected important medicinal plants showed inactive zone of inhibition against S. aureus and E. coli. Results showed that plants used for healing among Tboli community in Lemsnolon are found to be possible sources of potential drugs and are subject for further phytochemical and pharmacological investigations.
The Acute Response of Blood Coagulation, Fibrinolysis and Recovery Time after an Exhaustive Anaerobic Activity in Male Athlete and Non-Athlete Students
Authors: Foroughi Mohsen , Tabatabai Ellahe Fakhr , Saeidian Shahriar
Published: May 2019

The purpose of this search is the response of male athlete and non-athlete coagulation factor , fibrinolysis and time of recovery after one session of exhaustive anaerobic activity A quasi-experimental study was performed on 24 male students (athletes, non athletes)', from `18 to 24. Exercise protocol was RAST test, in which every tester covered 6 times the distance of 35 meters with all his power and there was 10 seconds for resting. Three stages of blood sampling were performed ) befor,immediately and one hour after the test).Data was analyzed by using Kolomogrof Smirnov test, Levin test, the statistical analysis method of compound variance and Kruskal-Wallis (p<0/05). The result of this study shows that a session of anaerobic activity has significant impact on hematocrit ،platelete and noncoagulation)D-Dimer ( athlete group, hematocrit and time of non-athelete PTT and also platelets, D-Dimer and time of recovery between two groups. But no significant difference for athlete group PTT, platelets and D-Dimer group of non-athletes,PT and fibrinogen in both groups (athlete and non-athlete) and also PT, PTT, hematocrit and fibrinogen were observed. This search offers that a session of anaerobic activity on blood coagulation, fibrinolysis and recovery time was effective. So the responses of athlete and non-athlete people can be differentof in some factors .
Electrocardiography changes in localizing the culprit vessel in acute myocardial infarction with angiographic correlations
Authors: Sampath Senthil Kumar , Sivasubramanian Vithiavathi , Lakshminarayanan Satish
Published: May 2019

Background: The electrocardiogram is the primary diagnostic tool to evaluate a patient with chest pain and suspected myocardial infarction. Anterior wall infarction due to occlusion of proximal LAD has worse prognosis compared to distal or branch vessel lesions. Diagnosis of anterior/inferior/posterior or lateral MI is based on patterns of ST deviation and risk assessment based on absolute magnitude of ST segment deviation or the width of QRS complexes. Although coronary angiography is the gold standard for determining the infarct related artery in acute myocardial infarction, ECG can be useful tool in identifying the culprit artery involved at the primary care.Methods: A prospective cross-sectional study was conducted in Aarupadai Veedu Medical College and Hospital. Standard 12 lead electrocardiograph were recorded for 50 patients at a speed of 25 mm/s and voltage of 10mm/mv. Patients who had acute inferior wall MI additional right pericardial leads were recorded (V3R and V4R). The recorded ECG was interpreted using the electrocardiographic algorithms of Zimet-baum PJ et al. An ST elevation or depression was considered significant only if it was >1mm.Results: The study result showed maximum specificity for LCx (100%) followed by RCA (92.67) and LAD (89.91). The sensitivity for identifying the culprit artery by ECG in acute myocardial infarction was 100% for both LAD and RCA coronary artery but 0% for LCx coronary artery. In case of LAD occlusion, the sensitivity is 100% for proximal LAD occlusion and 92.86%for distal LAD occlusion. The sensitivity and specificity for proximal and distal RCA is 100% and 80.43% respectively.Conclusions: ECG is an easily, widely available and non-invasive tool to localize the site of culprit artery in acute myocardial infarction.
Clinical profile of Dengue fever in an urban tertiary care hospital in South India
Authors: P. Dhivya , A. Monica , S. Jayaramachandran
Published: May 2019

Background: Dengue is among the most common flavivirus infections in the world. Today dengue ranks as the most important mosquito- borne viral disease in the world. Current estimates report that, at least 112 countries are endemic for Dengue and about 40% of the world populations (2.5-3 billion people) are at risk in tropics and subtropics. Annually 100 million cases of dengue fever and half a million cases of DHF occur worldwide. The clinical features are noted to be different in varying demographics of the world outlining the importance of bringing out data from different parts of the world, so clinicians are better equipped to anticipate the problems associated with clinical dengue.Methods: The study was conducted over a period of 2 years at a tertiary care hospital in urban Bengaluru, India. A cross sectional study of a total of 250 patients was done. They were diagnosed to be positive for dengue serology (NS1 or IgM) before including them in the study. Clinical features, haematological, biochemical and radiological parameters were assessed.Results: Out of 250 patients with dengue fever, the most common symptoms were fever (100%), headache (94.4%) and myalgia (97.2%). Bleeding manifestations were noted in 11.6% of the patients. Bradycardia was noted in 14.8% of the study population. Leukopenia was noted in 36% of the study population. Increased SGOT was seen in 59.6% and increased SGPT in 52.8% of the 250 subjects. The clinical outcome of the 250 patients of dengue fever was classical dengue fever in 86.8%, DHF in 11.6%, DSS in 0.8% and death in 0.8%.Conclusions: All patients with dengue fever present with fever. Other common features noted were headache, myalgia. Bleeding manifestations are to be looked out for. Rare but important features that a clinician must be vigilant to look for are bradycardia and leucopenia.
Angiographic Embolization followed by Excision of Large Cellular Angiofibroma of the Vulva
Authors: SB Torres , M Diez Brito , MS Peremateu , A Wernicke , C Saez Perrotta , C Marchitelli
Published: May 2019

Introduction: Cellular angiofibroma is a rare benign mesenchymal tumor, occurring almost exclusively in the superficial soft tissues of the genital region. Some of these lesions presents as large, hypervascularized masses. There are no reports in the literature to date on the challenges of resection of hypervascularized vulvar masses, or of hypervascularized cellular angiofibroma.Materials and methods: We describe a case of a cellular angiofibroma of the vulva and the surgical approach with tumoral vessel embolization and posterior resection.Case: A 47-year-old women was referred to vulvar pathology section of Italian Hospital of Buenos Aires for evaluation of left vulvar mass. A pelvic angiography was performed 5 days prior to surgery. It showed a hypervascularized formation at the level of the left vulva at the expense mainly of branches of the left internal pudendal artery. A complete resection was performed afterwards at our institution. The histopathological diagnosis was compatible with cellular angiofibroma.Conclusion: We consider that surgical planning is essential and has to be performed with a multidisciplinary approach. Angiographic embolization should be taken into account as a valid resource when planning a surgery with a high risk of blood loss in order to decrease morbidity.
Lived experiences of nursing students about ethical concerns regarding mobile learning in educational and clinical contexts
Authors: Koohestani Hamid Reza , Karimy Mahmood , Hemmat Morteza , Shamsizadeh Morteza
Published: May 2019

The field of education has experienced a profound change following the introduction of mobile technology over the last decades, and nursing education is not an exception. This study explored the experiences of nursing students about the ethical concerns regarding the use of mobile devices for learning purposes, that is, mobile learning, in educational and clinical contexts. A qualitative phenomenological study was carried out on nursing students (n = 19) in Saveh University of Medical Sciences of Iran between December 2017 and April 2018. Data were collected through semi-structured interviews with open-ended questions. Data analysis was done using Colaizzi’s 7-step method, revealing four themes and nine sub-themes including: 1) preserving professional dignity (in front of the patient, and the teacher, and preserving academic virtual identity); 2) securing informed consent and respecting personal (the patient’s and teachers) autonomy; 3) proper and efficient use (observing the regulations and codes, and making educational use); and 4) avoiding harm (responsible use of class and patient data). It was revealed that using mobile technology in education could raise ethical concerns for nursing students, and this should be emphasized in nursing educational programs.
The Effect of Health-Based Intervention on Knowledge, Attitude, and Practice of First-Grade High School Students
Authors: Mazloomy Mahmoodabad Seyed Saeed , Rezazadeh Mahdieh , Askarishahi Mohsen , Vakili Mahmoud
Published: May 2019

Introduction: Students' health of is of great importance because they account for a large part of community. Schools play an important role in the transfer of health information to students. The purpose of this study was to investigate the effect of a health-based intervention on the knowledge, attitude, and practice of high school students in Mehriz city.
 
Methods:  In this semi-experimental study with pretest-posttest design, 260 first-grade high school students were studied in Mehriz city in 2016-2017. The data collection tool was five sections of the Global school-based student health survey (GHSH). The questionnaires were completed by students before and three months after the intervention. Data were analyzed by SPSS 20 using z test, t-test, ANOVA, McNemar's test, and chi-squared test.
Results: After the intervention, a significant difference was observed between the students' scores in the pre- and post- intervention steps with regard to taking milk and dairy at least twice per day, consuming vegetables, washing hands before eating in school, brushing twice or more daily, exercising for at least 60 minutes per day, and having insufficient sleep at night due to being worried about various issues (P<0.05). The intervention was also effective on the mean (±standard deviation) scores of knowledge about mental health, nutrition, and oral health, as well as mean(±standard deviation) scores of attitudes toward physical activity, oral health, and nutrition (P<0.05).
 
Conclusion: Health interventions can increase health promoting behaviors and enhance knowledge and attitudes in students. Therefore, it is recommended to use interventional programs using available facilities in schools.
Female Teenagers' Lifestyle in preventing Osteoporosis in Yazd in 2014
Authors: Fallahzadeh Hossein , Momayyezi Mahdieh
Published: May 2019

Introduction: Osteoporosis is a metabolic and preventable disease. Prevention of this disease should begin during adolescence. Life style behaviors have an important role in this regard. This study was conducted to determine the lifestyle of female teenagers in relation to the prevention of osteoporosis in Yazd in 2014.
Methods: A descriptive-analytic study was conducted on 500 female teenagers selected by cluster sampling method in Yazd. Data were collected by questionnaire, which validity and reliability were confirmed. Data analysis was performed using SPSS-16. Statistical analyses included descriptive statistics, T-test, and ANOVA.
Results: In the field of bone disease, 3.3percent of participants stated that they suffered from bone disease, 0.9 of the student had a history of fracture of spine, and 0.4 had a history of fracture in their ribs. In addition, 79.2 percent stated that they received direct sunlight for a long period daily. In the field of receiving food, results showed that 6.8 percent of students used milk and cheese every day. Furthermore, 82.3 percent of participants indicated consumption of  milk and cheese 4-6 times per week and 9.1 percent reported 0-3 times per week. In the field of physical activity, 70.1 percent of adolescents exercised during the last week and the frequent physical activity was walking in most of them (75.3%).
Conclusion: Considering the effect of lifestyle such as diet, exercise, and exposure to sunlight on osteoporosis, educational programs should be conducted over proper nutrition, public sports, and lifestyle changes to prevent this complication
Walking the Walk: Integrating Evidence into Clinical Experiences
Authors: Cole Leslie G. , Turner Stephanie , Ann Graves Barbara
Published: May 2019

Professional nurses are called to provide nursing care using an evidence-based approach. Health-care professionals are challenged to break away from old traditions and search for ways to improve health. Evidence-based practice (EBP) must be threaded throughout nursing curricula to produce critically-thinking professional nurses who will be meeting new and significant health-care challenges. Nursing education must be grounded in the translation of current evidence into practice. Nurse educators must acknowledge the obstacles faced when teaching concepts of research to students who have chosen a practice-focused career. The words evidence-based practice may be intimidating to nursing students. Nurse educators must shift this paradigm to invite students to realize that EBP is an integral component of modern health care that bridges the gap between health-care practices and improved patient outcomes. Faculty in a baccalaureate Adult Health course developed a unique approach inviting students to apply evidence to their student clinical experiences. Survey results showed that this innovative approach increased students’ “excellent” or “good” understanding toward EBP concepts from pre-implementation scores of 46% to post-implementation scores of 94%. This active learning strategy allows students to “walk the walk” of EBP rather than simply listen to the “talk.”
ICA-EMA: A Tool for Assessing Nursing Complexity of Patients with Oncohematologic Disease in an Italian Center
Authors: lovino Paolo , Scudeller Luigia , Valeria Ferretti Virginia , Arcaini Luca , Dellafiore Federica
Published: May 2019

Inpatients with hematologic cancer (HC), particularly in an aging population, often require levels of nursing care that feel very demanding. Therefore, it is important to assess nursing complexity in this care environment. The purpose of this study is to assess nursing complexity of inpatients with HC. A prospective observational study was carried out on 131 patients admitted to an adult hematologic center in northern Italy. The following variables were analyzed by means of the Index of Caring Complexity (ICA): age, sex, diagnostic category, purpose of admission, presence of transplant, Charlson Comorbidity Index, and length of stay. A total sample of 131 patients were enrolled. Patients older than 65 years, with a history of transplant, admitted for complications, and with a diagnosis of myeloma or myelodysplasia had higher ICA scores. Therefore, patients in these groups are more likely to exhibit a higher nursing complexity than other patients. The study results can help health-care professionals identify, at an early stage, patients who need higher levels of nursing care; promote a more efficient allocation of nursing staff to the patient needs based on their group; and qualify the need for higher levels of nursing care in order to improve nursing care quality and achieve higher standards of care in Italian hematologic centers.
Operative Treatment for a Painful Nonunion Avulsion Fracture of the Femoral Attachment of the Medial Collateral Ligament in a Teenager
Authors: Calcei Jacob G. , Henry Jensen K. , Suryavanshi Joash R. , Schachne Jonathan M. , Fabricant Peter D.
Published: May 2019

Case:

A 13-year-old female gymnast presented with medial knee pain despite several months of nonoperative management for a valgus hyperextension injury resulting in a bony avulsion fracture of the medial collateral ligament (MCL) origin at the medial femoral condyle. The MCL was repaired via open reduction and internal fixation (ORIF) with a single 4.0 mm cannulated screw and washer.

Conclusions:

ORIF is a successful treatment option for extra-articular bony MCL origin avulsion fractures that fail conservative treatment. Following surgical intervention and structured physical therapy, our patient had full return to sports at 10 months.
A case of a 13-year-old patient with whipple disease
Authors: Zhilyaev E. V. , Dicheva D. T. , Andreev D. N. , Berezutskaya O. E. , Golovkina N. L. , Kuznetsova E. I. , Prokhorova E. G.
Published: May 2019

In the present article, the authors provide detailed material on the 13-year observation of a patient with such a rare disease as Whipple’s disease. Pathophysiological aspects, in particular changes in immunity within the framework of this nosology, clinical picture are also described in detail, and the emphasis is placed on the interrelation of certain symptoms, their intensification and regression. Taking into account the absence of clear recommendations for the management of such patients, the article considers various options of therapeutic schemes, and also reflects the own results of treatment.
Liver recipient quality of life analysis
Authors: Kosmacheva E. D. , Babich A. E. , Malysheva S. Y.
Published: May 2019

The aim of the study– to evaluate the quality of life of patients after liver transplantation.

Patients and methods. The quality of life of patients after liver transplantation was studied with the help of «SF-36 Health Status Survey» questionnaire and correlation analysis of all scales of the questionnaire with the MELD indices, Child-Pugh before transplantation, SCORE before and after transplantation, body mass index, immunosuppressants, presence of tumor, encephalopathy, hepatitis transplant was performed.

The results. In the surveyed group, the average indicators on the scales «physical functioning» were reduced by 31.3%, «role functioning due to physical condition» - by 60.8%, «pain intensity» - by 13.2%, «general health condition» - by 33.4%, «Life activity» by 19.9%, «social functioning» by 19.8%, «emotional role functioning» by 52.9%, «mental health» by 11.7%, «physical component of health» by 24.5% and «psychological component of health» by 15.6%. Between hepatitis grafts and psychological health, as well as between the presence of tumors and pain intensity, the correlation coefficient is greater than 0.25, and the significance levels of both chi-square criteria are less than 0.05.

Conclusions. Liver recipients have the lowest quality of life on the role-playing scale due to their physical condition compared to healthy liver recipients. A moderate statistically significant relationship between hepatitis grafts and psychological health, as well as the presence of tumors and pain intensity, has been revealed. There are no gender differences in all components of QL in the group of liver recipients.
The modern ideas about the etiology of irritable bowel syndrome
Authors: Sakhautdinova G. M. , Nagaeva R. R. , Asanbaeva K. E.
Published: May 2019

This article is devoted to the theme of the etiology of irritable bowel syndrome. This topic is highlighted in comparison with the Roman diagnostic criteria of III and IV revision. The following is considered: the theory of disturbed interaction within the «brain-gut» axis and visceral hypersensitivity induced in this way, as well as a possible mechanism for its implementation; also, the relationship of symptoms of IBS with patients’ mental state: anxiety, depression, sleep disorders. The relationship of IBS with microbiota of the intestine, the genetic mediation of IBS, the examples of candidate genes in biomarkers; the mechanisms of work of these genes are also described; the issue of intolerance to certain foods (FODMAPs, IgE-mediated hypersensitivity) in patients with IBS is highlighted as well; immunological aspects, including the theory of subclinical inflammation (low-grade inflammation) or post-infection IBS.
Assessment of efficiency of therapy at patients with the gastroesophageal reflux disease in age aspect
Authors: Denisova O. A. , Livzan M. A. , Denisov A. P. , Kuhn O. A.
Published: May 2019

The demand of work is connected with prevalence a gastroesophageal reflux disease (GERB) against the background of insufficient study of age features of a course of this disease in the senior age groups. The research cohort made 96 patients with GERB. All patients were divided by method of randomization into two equal groups by quantity: the first – the persons receiving пантопразол 40 mg/days, the second – омепразол in a dose of 20 mg/days. Comparative study of efficiency of reception of an omeprazol and pantoprazol in age aspect at patients with GERB from positions of assessment of indicators of the quality of life (QL) was carried out. Indicators of KZh estimated on a visual and analog scale and the questionnaire of SF-36. Direct correlation connection between the level of health of patients and the following factors is established: existence of heartburn, the general time рН <4.0, number of refluxes in a minute, duration of the most long reflux in minutes. It was reasoned it is shown that at persons of the senior age groups in treatment of GERB пантопразол is more effective medicine, than омепразол. Patients of young and average age of the convincing proof have advantages of a pantoprazol before omeprazoly is not found. The result of the carried-out therapy in many respects is defined by degree of commitment of the patient. Therefore the choice of optimum approach to purpose of concrete medicine has to be carried out taking into account assessment of its safety, availability and the acceptability from the point of view of the patient.
Cyclic rifaximin and soluble dietary fiber therapy for symptomatic diverticular disease: effective prevention of complications
Authors: Golovanova E. V.
Published: May 2019

The article discusses the current issues of managing patients with colonic diverticular disease. The prevalence of pathology is steadily increasing, which is due to the more frequent diagnosis of the disease and the increase in life expectancy of the population. Meanwhile, the wrong approaches to the management of this category of patients can result in the development of serious complications that often result in fatal outcomes. The paper presents data on the efficacy of rifaximin therapy of colonic diverticular disease, including using cyclic courses that significantly reduce the risk of complications. Particular attention is paid to the role of dietary fiber in the prevention of the inflammation development in the diverticular disease, including dietary fiber combined with rifaximin.
A modified controller design based on symbiotic organisms search optimization for desalination system
Authors: Rathore Natwar S. , Singh V. P. , Phuc Bui Duc Hong
Published: May 2019

Fresh water demand is growing drastically in many parts of the world. Desalination of seawater, brackish water, and waste water is one solution to meet the demands of fresh water. Currently, reverse osmosis (RO) desalination process is one of the best methods for the desalination process. In this study, a modified controller design is proposed for RO desalination system based on symbiotic organisms search (SOS) algorithm. A multivariable model of RO desalination plant is considered for experimentation. The RO system considered here is first decoupled using a simplified decoupling process to obtain two non-interacting loops. Then, a proportional-integral-derivative controller with second order derivative (PID-DD) scheme based on SOS algorithm is proposed for each loop to find optimal control parameters of the RO system. To design the PID-DD controller for each loop, integral of squared error (ISE) is considered as fitness function. Four other state-of-the-art optimization algorithms, namely, teacher-learner-based-optimization (TLBO), differential evolution (DE), particle swarm optimization (PSO), and artificial bee colony (ABC), algorithms are also tested for the considered system. To show competitiveness of the proposed SOS-based PID-DD controller, a comparative study based on time domain analysis is performed. Results show the SOS-based PID-DD controller is superior to other PID-DD controllers.
Synthesis and Study of Fluorescent Forest-like Carbon Nanotubes Doped with Oxides of Rare-earth Elements
Authors: Guillén Patsy Y.A. , Kharissova Oxana V. , Selvas Romeo , Kharisov Boris I.
Published: May 2019

Background:

Methods for obtaining the hybrids of multi-wall carbon nanotubes
(MWCNTs) and rare earths are in progress. Such composites may possess luminescent properties,
which could be of interest for various areas, in particular, medicine (imaging), engineering (fluorescent
polymers, LED and relative materials), among other applications. Lanthanide oxides, additionally,
can serve as catalysts for MWCNTs formation and catalysts of several organic reactions.

Objective:

The goal of this work is to obtain the composites of MWCNTs with strontium aluminate,
doped with several lanthanides (Eu, Ce, La, Nd, and Sm), via the spray pyrolysis method and to study
the properties of the formed hybrids.

Methods:

The spray pyrolysis method in the temperature range from 780 to 850oC, starting from toluene
as a carbon source and ferrocene as a catalyst precursor. SrAl12O19 doped with rare-earths were
added to carbon matter in the ultrasonic field.

Methods:

Among various structures, the forest-like nanostructures have been observed in some cases.
The formed coated carbon nanotubes possess fluorescent properties due to the attachment of lanthanide-
doped ceramic compound (SrAl12O19) to their surface, allowing the emission control for each dopant:
yellow (Nd2O3), blue (Eu2O3 and Sm2O3), intense orange (La2O3), light orange (Ce2O3).

Conclusion:

MWCNTs decorated with strontium aluminate (SrAl12O19), doped with a series of lanthanide
oxides (Nd2O3, Eu2O3, La2O3, Ce2O3, Sm2O3), were obtained by the spray pyrolysis technique
on the surface of optical fibers. Lanthanum- and cerium-containing coatings were found to show a better
deposition on the MWCNTs surface, exhibiting uniform coating. MWCNTs, coated with Nd-, Ce-,
and Eu-doped SrAl12O19 were shown to reveal the best conductive properties.
Accounting power supply schemes for traction substations in the calculation of short circuits in the AC traction network
Authors: Zharkov Yu. I. , Popova N. A. , Figurnov E. P.
Published: May 2019

When calculating short-circuit currents in the AC traction network, it is assumed that each of the traction substations receives power from uncoupled external power supply sources with known resistances. In some cases, especially when powering a group of traction substations from a high-voltage power line of a longitudinal power supply, the external power supply system affects not only the magnitude of short-circuit currents, but also their redistribution between adjacent traction substations of the interstation area where this circuit is considered. Such unrecorded redistribution can have a negative effect on short circuit protection. The article considers the equivalent circuit of the traction network, taking into account resistance of the external power supply system. Particular attention is paid to the fact that in replacement circuits of direct and negative sequence value of reduced resistance of one phase of a multiwinding transformer, calculated from the short circuit voltage, does not depend on the connection scheme of its windings. It is noted that in some cases it is difficult to obtain a complete scheme of an external power supply system. Considering that the short circuit in the traction network for the external power supply system is remote, it is proposed taking into account the reference network or traction substations as power sources, from which high-voltage transmission lines power the traction substations. Resistance of the supporting substations as power sources must takes into account connected equivalent power system.Such equivalenting should be carried out by known values of currents or short-circuit powers at the inputs of the reference substation or, if such information is not available, by the rated values of the switched-off currents or powers of the switches of high-voltage line connections.The following power schemes for traction substations are considered: each from its own supporting substation, which is part of an electrically uncoupled external power supply system; from the double-circuit high-voltage line of longitudinal power supply when it is powered from different supporting substations; from the supporting network substation, the traction substation receives power from two lines, and from this the traction substations receive power from two lines in a circle pattern.These three common cases cover all the most common power schemes for traction substations. For each of them formulas are given to determine the resulting equivalent resistance of the external power supply circuit, which should be taken into account in the replacement circuit of the traction network.
Methodology for calculating financial result for the owner of the infrastructure from increasing carrying capacity of the direction during operation in cars with increased capacity
Authors: Miroshnichenko O. F. , Oginskaya A. E.
Published: May 2019

In accordance with the draft Long-Term Development Program of the JSC “Russian Railways” until 2025, the main driver of growth in freight turnover in this perspective will be a further increase in the transportation of hard coal. It will occur both due to the growth of coal production in Kuzbass and due to the development of new coal deposits. For the period up to 2025, the increase in coal loading by 4 – 5 % per year is predicted on rail transport. Under these conditions, it becomes necessary to increase the capacity of the transport complex, especially the carrying and transport capacities of the Eastern Operation Area.The article presents the methodology for calculating economic effect of increasing the carrying capacity of the site during operation in cars with increased axle load. The scope of this methodology is speciﬁc areas (sections), taking into account their technical, operational and economic parameters.Variant calculations were made, the results of which showed that an increase in the carrying capacity of a section with an increase in the mass of a train formed from cars with increased axle loads does not always give a signiﬁcant positive effect in terms of value for the infrastructure owner. Positive effect of the increase in carrying capacity in the form of additional profits from the additionally used traffic volume in the evaluated variant can be taken into account in the following cases:- operation of large-capacity cars on freight-intensive sections where there is a lack of carrying capacity in the billing period, i. e. the carrying capacity of the section is less than its required value;- exceeding the freight charge for the additional volume of freight carriage incurred transportation costs, i. e. if the tariff compensates for at least the dependent part of the cost of additional volume transportation.Positive economic effect of the increase in carrying capacity in the form of increased money ﬂow is achieved if the proﬁt from the additional trafﬁc volume in the direction exceeds the additional costs associated with changing the technology for servicing the traction arms while promoting high-weight trains formed from cars with increased axle loads. In other words, if there is no increase in the value of the indicator of mileage (in section-km) per unit of transport work, and the unit cost of maintaining one section with a new technology for servicing traction arms.
SEISMIC REACTION OF NONLINEAR SYSTEM OF SEISMIC DEFENSE WITH KINEMATIC SUPPORTS
Authors: Abakarov A. D. , Zajnulabidova H. R.
Published: May 2019

Objectives. The aim of the study is to obtain formulae for calculating probability of seismic response characteristics of nonlinear seismic isolation system with the specified function "force-shifting", characteristic of seismic isolation system with kinematic pillars and score the effectiveness of this system of seismic isolation in multi-storey buildings.

Method. The studies were performed analytical techniques and numerical method of statistical tests.

Result. Analytical expressions to calculate the mean square value of one massive seismic isolation system with displacement kinematic pillars and the effectiveness of the application of graphs of kinematic seismic isolation bearings for multi-storey buildings based on the results of numerical experiments using the method of statistical tests.

Conclusion. Application of kinematic supports, with "power-move" described by the specified in the work of a non-linear function, allows you to reduce the seismic loads on buildings and distortions of floors 2 or more times. Kinematic bases are more effective when high-frequency effects and in the buildings of the constructive solution of a height of not more than 5 floors.
THE EFFECT OF PRELIMINARY ELECTRIC RADIO HEATING ON THE PHYSICAL AND THERMAL CHARACTERISTICS OF THE HEAT-RESISTANT CERAMZITONE-CONCRETE BASED ON COMPOSITIVE BINDER OF LOCAL MINERAL RAW MATERIALS
Authors: Alkhasova Yu. A. , Gadzhiev A. M. , Khadzhishalapov K. N. , Hezhev T. A.
Published: May 2019

Objectives. The aim of the study is to increase the physico-thermal and operational characteristics of heat-resistant ceramsite concrete with an activated binder by pre-heating the mixture.

Method. To conduct the study, a technique was developed by the Research Institute of Concrete and Reinforced Concrete named after A.A. Gvozdev.

Results. An analysis of the study results of the effect of preliminary electric heating on the physico-thermal characteristics of heat-resistant ceramsite concrete on the basis of a composite binder showed that, in comparison with drying at a temperature of 105º, the operational properties of heat-resistant ceramsite concrete are enhanced by uniform heating of the samples along the concrete body. This isdue to the pore pressure in the concrete structure being reduced by removing physically bound water. Ceramsite is used as large filler while ceramsite sand is used as small filler; activated composite combination of local mineral raw materials consisting of Portland cement and calcined argillic clay is used as a binder. In the concrete body, due to the removal of physically bound water caused by the decrease in pore pressure, the formation of cracks in the interporal partitions decreases, preventing the explosive destruction of heat-resistant ceramsite concrete and improves its physico-mechanical, thermal and operational characteristics. Activated composite binder based on the combination of Portland cement and fine ground argillite clay reduces shrinkage deformations and increases the concrete strength as well as its heat resistance. Concretes with activated composite binder are less susceptible to volume change during the heating process,contributing to greater preservation of concrete strength and structure due to lower stress levels caused by the temperature deformations.

Conclusion. The composition of the developed heat-resistant ceramsite concrete allows its use for monolithic lining of the walls of a tunnel kiln for burning ceramic bricks, as well as various concreting furnaces for the construction industry. The conducted research demonstrates the possibility and expediency of using electric heating for the hardening of heat-resistant ceramsite concrete with a composite binder. The use of electric heating increases the strength of heat-resistant ceramsite concrete both before and after heating to high temperatures. Optimised modes of electric heating of heat-resistant ceramsite concrete with a composite binder are established.
THERMOPHYSICAL BASES OF PRODUCTION OF EFFECTIVE EQUIPMENT FOR GENERAL CRYOTHERAPEUTIC EXPOSURE
Authors: Baranov A. Yu. , Vasilenok A. V. , Sokolova E. V. , Shestakova O. A.
Published: May 2019

Objectives. The equipment for general cryotherapy (WBC) has been used for more than 40 years without a clear understanding of the mechanism of therapeutic action, the technological conditions of patient safety, the nominal cost of energy in cryostation systems. Uncertainty in the fundamental issues of the production and operation of cryotherapy equipment has caused a gradual degradation of the WBC method in countries that have long determined the development of this section of cryomedical technology.

Method. In Russia, thanks to the advanced development of the scientific basis of the production and operation of facilities for the WBC, this method is developing dynamically. Exports of cryo-therapeutic equipment are growing. In the foreign literature, the number of publications denying the effects of the WBC is growing. These articles describe research performed on foreign-made equipment, which is significantly inferior to Russian samples. Such publications discredit the WBC method, hamper the export of Russian equipment, and hinder the spread of effective treatment methods in Russia.

Result. The results of the analysis of differences in design and technological parameters of domestic and foreign equipment are presented. The technique of numerical analysis and optimization of WBC technology is described. It is shown that the basis of the effectiveness of Russian equipment is rational design solutions and high power supply of cryostatting equipment.

Conclusion. The individual technology of the procedures combines high therapeutic efficacy with relatively low energy costs, and also provides the traditional medicine principle of individuality of treatment. Research results should be popularized for the gradual distribution of single-unit installations in all medical facilities.
APPROACH OF PROCESSING, CLASSIFICATION AND DETECTION OF NEW CLASSES AND ANOMALIES IN HETEROGENIOUS AND DIFFERENT STREAMS OF DATA
Authors: Bagutdinov R. A.
Published: May 2019

Objectives.The aim of the study is to search for effective methods and approaches to the processing of heterogeneous data streams and the management of problems of infinite length, conceptual evolution and conceptual drift. A heterogeneous data stream can have infinite length and contain structured or unstructured data. Processing a heterogeneous and multi-scale data flow is a major challenge for researchers. Most of the research focuses on solving problems of infinite length and concept-drift.

Method.New class detection strategies are classified as parametric and non-parametric. This work is based on a non-parametric approach. The classifier works on the ensemble of three models. The separation generates a different number of classes in each fragment. Classes are calculated by applying the K-Medoid clustering method on each fragment. The effectiveness of the K-media clustering method is more suitable for a data set containing anomalies.

Result.The developed algorithm is capable of processing heterogeneous and multi-scale data. Each instance that is present in the model belongs to only one class. Experimental work was performed on four samples of stream data of 2000 lines each. After performing the pre-processing, the multi-valued characteristics of the data were found in the data set.

Conclusion.This paper presents an effective approach for processing heterogeneous data streams and managing tasks of infinite length, conceptual evolution and conceptual drift. The developed approach is based on the string matching parameter instead of the distance for processing the four tasks of data streams. The level of false positives in the developed algorithm is rather low and can be considered insignificant. The approach does not classify a new instance of the class as an existing class, but can effectively handle the functional evolution.
The Impact of a Procurement Implementation and Government Internal Control System on Goods/Services Procurement Fraud Prevention by Using Organization Ethical Culture as a Moderating Variable
Authors: Akbar Arasy Ghazali
Published: May 2019

Abstract                                                                                     This study aims to empirically examine and prove the organization's ethical culture moderating impact on the relationship between e-procurement implementation and the government's internal control system with fraud prevention in procuring goods and services. Based on the purposive sampling method, 55 obtained samples were analyzed by using moderated regression analysis. The results show several findings, first, implementation of e-procurement has a significant effect on fraud prevention. Second, the government's internal control system has a significant effect on fraud prevention. The third and fourth findings indicate that the organization ethical culture is supported as a moderating variable. Keywords: e-procurement, government’s internal control system, organization ethical culture, fraud preventionPengaruh Implementasi E-Procurement dan Sistem Pengendalian Internal Pemerintah terhadap Pencegahan Fraud Pengadaan Barang/Jasa dengan Budaya Etis Organisasi sebagai PemoderasiAbstrakPenelitian ini bertujuan untuk menguji dan membuktikan secara empiris efek moderasi budaya etis organisasi terhadap hubungan implementasi e-procurement dan sistem pengendalian internal pemerintah dengan pencegahan fraud pengadaan barang dan jasa. Berdasarkan metode purposive sampling diperoleh 10 sampel OPD yang dianalisis dengan menggunakan moderated regression analysis. Hasil menunjukkan beberapa temuan, pertama implementasi e-procurement berpengaruh terhadap pencegahan fraud. Kedua, sistem pengendalian internal pemerintah berpengaruh terhadap pencegahan fraud. Temuan ketiga dan keempat menunjukkan bahwa budaya etis organisasi terdukung sebagai variabel moderasi. Kata Kunci: e-procurement, sistem pengendalian internal pemerintah, budaya etis organisasi, pencegahan fraud.
Editorial Future Education: Schools and Universities
Authors: Levine Michael P , D'Olimpio Laura
Published: May 2019

While some may argue that universities are in a state of crisis, others claim that we are living in a post-university era; a time after universities. If there was a battle for the survival of the institution, it is over and done with. The buildings still stand. Students enrol and may (at times) attend lectures, though let’s be clear—most do not. But virtually nothing real remains. What some mistakenly take to be a university is, in actuality, an ‘uncanny’ spectral presence; ‘the nagging presence of an absence … a “spectralized amnesiac modernity with its delusional totalizing systems”’ (Maddern & Adey 2008, p. 292). It is the remains and remnants of the university.[1]Overstatement? Perhaps. We think many if not most administrators, at all levels, will likely dissent. So too will many if not most teachers and students. Trying to determine whether this is correct, or to what extent, by consulting polls and reading opinion pieces in various education journals and professional papers (e.g. Journal of Higher Education; The Campus Review; Chronicle of Higher Education) is likely to be of little help. In any case, it is the hypothesis (that universities and educational institutions generally are in a state of crisis), along with closely related ones, and concerns about what can be done in the circumstances, that have generated this special issue.This special issue highlights and illustrates that most of the contested issues regarding educational theory and practice central to how universities and schools should be, and how they should be run, are first and foremost questions of value rather than fact. They are questions regarding what we want, but more importantly what we should want, from our universities and schools; about what they should be and what students, teachers and administrators should be doing to facilitate this.[1]    See Cox and Levine (2016a, b) and Boaks, Cox and Levine (forthcoming).
It’s getting personal: The ethical and educational implications of personalised learning technology
Authors: Huis in ’t Veld Iris , Nagenborg Michael
Published: May 2019

Personalised learning systems—systems that predict learning needs to tailor education to the unique learning needs of individual students—are gaining rapid popularity. Praise for educational technology is often focused on how technology will benefit school systems, but there is a lack of understanding of how it will affect the student and the learning process. By uncovering what the meaning of ‘personal’ is in educational philosophy and as embodied in the technology, we illustrate that these two understandings are different regarding the autonomy of the student. Personalised learning technology, therefore, bears the risk of failing to achieve its educational ideal of what personalisation should be. We also illustrate how personalised learning technology effects student autonomy by requiring the intensive tracking of the learning process, exposing them to privacy and data protection risks. We do not claim that education does not need technology, but we want to illustrate the importance of values as drivers of innovation.
Correlative Value of Stereotype in Cross-Cultural Communication
Authors: Chuangang Fan
Published: May 2019

Although stereotype has its own defects, it is indispensable in cross-cultural communication. Based on the analysis of the necessity of stereotype in cross-cultural communication, this paper points out that the inherent defects and the logical fallacy of stereotype are the important factors that cause the failure of cross-cultural communication. And communicators should take into account the relavance between stereotype and individual cross-cultural communication behaviors in the process of cross-cultural communication. On the basis of stereotype, cross-cultural communicators should have a good understanding of foreign cultures to make cross-cultural communication effective.