bluuebunny/crossref_metadata_2025 huggingface dataset:
СИСТЕМНЕ ГОЛОВОКРУЖІННЯ В ПРАКТИЦІ ВІЙСЬКОВОГО ЛІКАРЯ
Authors: Тещук Віктор , Тещук Назарій , Руських Олександр
Published: October 2022

Проведено катамнестичне спостереження 172 пацієнтів (на протязі п’яти років) та обстежено 150 пацієнтів, котрі перенесли гострі порушення мозкового кровообігу (ГПМК) за ішемічним типом (ІТ), які перебували на стаціонарному лікуванні в ангіоневрологічному відділенні клініки нейрохірургії та неврології Військово-медичного клінічного центру Південного регіону (м. Одеса). Всі вони були госпіталізовані з гострим нападом головокружіння. Ми вивчали етіопатогенетичні механізми розвитку цієї патології. Головокружіння є причиною різних захворювань, як неврологічних (гостре порушення мозкового кровообігу, вестибулярна мігрень), отоларингологічних, серцево-судинних, ендокринних та ряду інших захворювань. Головокружіння може бути, як симптомом гострого порушення мозкового кровообігу у вертебрально-базилярному басейні за ішемічним типом так і в каротидному басейні, а може бути ізольоване системне головокружіння поряд з гострим порушенням мозкового кровообігу. Проведене дослідження внутрішньочерепної гемодинаміки у пацієнтів з периферичним вестибулярним головокружінням. Доведено порушення венозного відтоку по поперечним синусам при інтактності артеріального ланцюжка церебрального кровотоку. Вперше приведені отримані дані про додатковий механізм вертиголітичного ефекту бетасерка, котрий достовірно покращує венозний відток з порожнини черепа, в середніх терапевтичних дозах (48 мг /добу: по 16 мг Х 3 рази на добу, всередину) на фоні комплексного лікування гострого порушення мозкового кровообігу за ішемічним типом. Отримані результати зіставляли по віку та статі пацієнтів, як з даними контрольного гурту і гурту порівняння.
Short and Open Circuit Fault Detection in On-Grid Photovoltaic Systems 1MWP Bangli Based on Current and Voltage Observation
Authors: IBK Sugirianta , IGNA Dwijaya_S  , M Purbhawa  , GK Sri Budarsa  , Ketut Ta
Published: October 2022

Photovoltaic (PV) systems as clean and green electrical energy generators have increased sharply in the last 10 years. The installation of a PV system in an open area is one of the causes of frequent faults/damage to the PV system. Fault in the PV system causes a decrease in efficiency, weak reliability, and disruption of the continuity of the electrical power distribution, which in turn causes the low performance of the system. This research does on the on-grid PV system 1MWp Bangli which consists of 278 PV arrays and 5004 monocrystalline solar modules 200Wp, which started operation in 2013. This research aims to find open circuit and short circuit faults that occur in the PV system Bangli. The method used in this research is the current and voltage observation method. Current and output voltage measurements from the PV array are carried out as well as measurements of working module temperature and solar irradiance. To calculate the output PV array's current (RI) and voltage (RV) indicators; Calculation of the current (RIM) and voltage (RVM) indicators under fault-free conditions, and the short circuit (TIO) and open voltage (TVS) threshold are calculated. As a result, this study succeeded in determining short and open circuit faults that occur in PV systems on grid 1MWp Bangli.
Effect of Various Types of Organic Mulch on Growth and Yield of Soybean (Glycine max L. Merril) Anjasmoro Variety
Authors: Wahyuni Aplina dwi , Hastuti Dewi , Laila Alfu
Published: October 2022

Cultivation of soybean is currently planted using ground cover as a solution to increase crop productivity. So it is necessary to research the effect of various types of organic mulch on the growth and yield of soybeans (Glycine max L. Merril). This study aims to determine the effect of various types of organic mulch on the growth and yield of soybeans (Glycine max L. Merril). This study was laid out in Randomized Block Design 1 factor, which was composed of 6 levels, with 5 replications, so there are 30 experimental units. There was no mulch, rice straw mulch, coconut coir powder mulch, bamboo leaf litter mulch, wood sawdust mulch, and rice husk mulch. The application during soybean cultivation observed parameters were plant height (cm), number of leaves (leaves), fresh header weight (g), fresh root weight (g), root dry weight (g), root dry header (g), number of pods (fruit), pod weight (g), and weight of 100 seeds (g). Rice straw mulch affected the growth and yield of soybeans on plant height 5-6 weeks after planting with average (40.95; 49.18 cm), header fresh weight (43.04g), number of pods (71.40 fruit), and pod weight (36.02g).
Effects of Extra Virgin Olive Oil on Changes in CRP Levels in Colorectal Cancer Patients Receiving Capecitabine
Authors: Chandra Rudy , Andayani Yenny Dian , Bahar Erial
Published: October 2022

Colorectal cancer has a high incidence, morbidity, and mortality, where the incidence is often associated with inflammation. Extra Virgin Olive Oil (EVOO) has an anti-inflammatory effect that has been widely studied, especially the phenol components in the form of hydroxytyrosol and oleocanthal, which have anti-inflammatory properties. C - reactive protein is an acute inflammatory protein that is expressed in the presence of tissue damage. CRP levels themselves run parallel to the progression of malignancy, and elevated CRP is a predictor of poor prognosis. This study was conducted to determine the effect of EVOO on changes in CRP levels in colorectal cancer patients undergoing capecitabine chemotherapy. This study is a randomized, placebo-controlled, double-blind trial. The subjects of the study were 30 colorectal cancer patients who would undergo capecitabine chemotherapy. They were randomly divided into 2 groups: the group receiving 30 ml of EVOO per day and the group receiving a placebo (corn oil). Plasma CRP levels will be assessed at the start of the study and after two cycles of chemotherapy. The median age in the EVOO group was 45.5 (28-58), and in the placebo group, 55 (26-59). Nineteen samples (33%) were late-stage cancer that had metastasized. The median BMI of research subjects was 19.7 (14.8-31.2), and the mean performance status score was 77.6 ± 5.6. CRP levels after treatment had no significant difference (p=0.218) in the EVOO and placebo groups. In the EVOO group, there was a decrease in serum CRP levels from 19.8 ± 19.4 to 14.8 ± 15, while in the placebo group from 25.8 ± 26 to 22 ± 20.5. EVOO can significantly reduce CRP levels, but in comparison with a placebo did not show a statistically significant difference.
The Key to Success Is the Ability to Adapt
Authors: Hilliard Lauren
Published: October 2022

In this essay, I reflect on my first-year experience and share insights into what college success looks like for me. I discuss several challenges that I have faced so far, including peer pressure and burnout. I also talk about the skills I have learned and the opportunities I have taken advantage of to enhance my college experience and success. I conclude by offering suggestions for colleges and universities to enhance student success. Overall, I believe the ability to adapt, from both the student and the university perspective, is key to student success in college.
Advancing from Prediction to Prescription: Strategies for Proactively and Thoughtfully Addressing Students' Needs
Authors: Parnell Amelia
Published: October 2022

Data-informed decision-making is no longer an optional or occasional practice, as higher education professionals now routinely respond to calls for accountability by providing data to show how their work impacts students. Institutions are operating with a culture that, at a minimum, includes the use of descriptive and diagnostic analyses to assess how students have performed, as well as real-time analyses to monitor current progress. Such regular data use provides a foundation for more advanced examinations to predict student outcomes, and those forecasts will ultimately inform the prescription of specific interventions to help students succeed. However, prescribed solutions are only effective when delivered with appropriate levels of care and consideration of students’ needs and perspectives. In this essay, I describe the challenges and opportunities of advancing from prediction to prescription and I present four tactics for how professionals can do so with student-centered approaches.
Efektivitas Pemberian Albendazole Terhadap Tingkat Kejadian Helminthiasis Pada Kuda Cidomo Di Pasar Tradisional Kecamatan Gunungsari Kabupaten Lombok Barat
Authors: Nugroho Dwi Agung , Tirtasari Kunti , Ningtyas Novarina Sulsia Ista'In
Published: October 2022

Kuda cidomo di pasar gunungsari memiliki kondis kesehatan yang terlihat memprihatinkan karena banyak tenaga kuda yang dieksploitasi tanpa ditunjang dengan kebutuhan nutrisi yang cukup dan perawatan yang baik. Salah satu faktor pendukung kondisi tersebut antara lain yaitu adanya infeksi cacing. Albendazole adalah obat cacing derivat benzimidazol berspektrum luas. Pengaruh Pemberian Albendazole Terhadap Helminthiasis pada hewan, seperti kuda , sapi dan babi yang dapat diberikan secara peroral. dosis tunggal efektif untuk infeksi cacing nematoda. Tujuan penelitian ini untuk mengetahui efektivitas pemberian obat cacing pada kuda Cidomo di Pasar Kecamatan Lombok Barat dengan menerapkan metode fecal Egg Count Reduction Test (FECRT). Penelitian dengan rancangan community field trial dilakukan pada kelompok kuda cidomo dengan 25 sampel feses kuda cidomo yang diambil pengujian dilakukan dengan menggunakan metode pengapungan menggunakan Mc Master untuk mendapatkan nilai EPG. Berdasarkan hasil penelitian 25 sampel feses kuda cidomo dan 23 sampel dinyatakan terinfeksi helmintiasis di Pasar Tradisional Kecamatan Gunungsari yang sudah diperikasa. Sampel yang positif cacingan akan diberikan albendazole (1-2 bolus/100-200 Kg/BB). 10 hari setelah pemberian albendazol, semua sampel menunjukan adanya penurunan nilai EPG sesudah diberikan albendazole dengan persentase nilai Fecal Egg Count Reduction (FECRT) sebesar 90%. yang menunjukan albendazole dapat digunakan mampu untuk mengatasi kasus helmintiasis pada kuda cidomo di pasar tradisional kecamatan gunung sari karena mampu menurunkan nilai EPG (Egg per Gram of Faeces) tetapi belum mencapai standar efektivitas (≥ 95%).
Tingkat Cemaran Bakteri pada Susu Kambing Peranakan Etawa (PE) yang Dijual Oleh Peternak Di Desa Aikmual Kabupaten Lombok Tengah
Authors: Karyadi Ikhsan , Agustin Alfiana Laili Dwi , Ningtyas Novarina Sulsia Ista'In
Published: October 2022

Susu kambing termasuk bahan pangan alami yang mengandung nilai gizi tinggi, namun cepat mengalami kerusakan/kebusukan bila tidak ditangani dengan tepat dan cepat. Kerusakan susu dapat disebabkan oleh berkembangnya jumlah bakteri dan metode penyimpanan yang tidak tepat. Penelitian ini bertujuan untuk mengetahui tingkat cemaran bakteri pada susu kambing peranakan etawa (PE) di Desa Aikmual Kabupaten Lombok Tengah. Penelitian ini menggunakan 5 sampel susu yang dijual oleh peternak, penelitian bertujuan untuk melihat tingkat cemaran bakteri dengan metode Total Plate Count. Hasil yang diperoleh menjukan semua sampel mengandung bakteri, tetapi ada tiga sampel yang mengandung bakteri melebihi SNI.
İtalya’da Ermeni Terörü: İtalyan Basınında Sait Halim Paşa Suikastı
Authors: Çelebi Mevlüt
Published: October 2022

Osmanlı Devleti’nde, Türk olmayan unsurlar, 19. yüzyılda kendi devletlerini kurmak için bağımsızlık mücadelesine başladılar. Bu milletlerden birisi de uzun yüzyıllar Anadolu’da Türklerle birlikte yaşayan Ermenilerdir. Ermeniler de bağımsızlık mücadelelerinde, Osmanlı Devleti’ne karşı ayaklanmalar çıkartmış, Avrupa devletlerinden yardım görmüş ve terörü amaçlarına ulaşmak için etkili bir silah olarak kullanmışlardır. Ermenilerin Osmanlı Devleti’ne ve daha sonra Türkiye Cumhuriyeti’ne karşı terör faaliyetlerini üç aşamada incelemek mümkündür. Birincisi, Osmanlı Devleti’nin son zamanlarında İstanbul’da Osmanlı Bankası’nı basmaları (26 Ağustos 1896) ve Sultan II. Abdülhamit’e karşı suikast düzenlemeleridir (21 Temmuz 1905). İkincisi, Mondros Mütarekesi’nden (30 Ekim 1918) sonra, 1915’te tehcir kararını alan İttihat ve Terakki Partisi’nin liderlerine karşı intikam almak amacıyla düzenledikleri Nemesis operasyonlarıdır. Üçüncü aşama da 1970’lerde dünyanın değişik ülkelerindeki Türk diplomatlarına karşı başlattıkları saldırılardır.
Bu makalede Ermeni terör örgütlerinin İtalya’da Türklere karşı ilk eylemi olan Sait Halim Paşa suikastı incelenecektir. Tehcir kararı alan hükûmetin sadrazamı olan Sait Halim Paşa’nın 6 Aralık 1921’de Roma’da Ermeni Terörist Arşavir Şıracıyan tarafından öldürülmesi dönemin İtalyan gazetelerindeki haberler esas alınarak araştırılmıştır.
1947 Türkiye-Ürdün Dostluk Antlaşması ve Türkiye-Suriye İlişkilerine Etkileri
Authors: Çoban Karabulut Pakize
Published: October 2022

Türkiye ve Ürdün arasındaki ilişkilerin geliştirilmesi amacıyla Kral Abdullah 1947 yılında Türkiye’ye gelerek Ankara ve İstanbul’u ziyaret etmiş, ziyaret sürecinde iki ülke arasında Ankara’da dostluk antlaşması imzalanmıştır. Hem Kral Abdullah hem de İsmet İnönü tarafından antlaşmanın büyük Suriye oluşumuyla ilgili olmadığı belirtilmiş ve Suriye’nin bu antlaşmaya dair olumsuz düşüncelerinin yok edilmesi adına, Birleşmiş Milletler (BM) vurgusu yapılarak antlaşmanın amacının bölge huzurunu sağlamak olduğundan bahsedilmiştir. Ancak antlaşmanın ardından, konunun basında yer almasıyla Suriye’deki Arap milliyetçileri, antlaşma üzerinden dış politikada Türkiye’ye olumsuz bir üslup kullanmaya başlamıştır. Aynı zamanda 1947 Türkiye-Ürdün Dostluk Antlaşması ve Kral Abdullah’ın antlaşma hakkındaki söylemleri Arap milliyetçilerinin ülkedeki özellikle Türk azınlıklarına karşı sert tutumunu arttırmıştır. Böyle bir kargaşa ortamında bulunmak istemeyen yatırımcı Ermenilerin, Sovyet Rusya yerine daha demokratik olan Türkiye’ye gitmeyi tercih etmeleri, ekonomisi iyice daralmış olan Suriye’yi çok rahatsız etmiştir. Bu nedenle Suriye bu kargaşa ortamının dışarıya aksettirilmesini önlemek için Lazkiye (özellikle, Bayır, Bucak ve Hazine nahiyelerindeki), Fırat ve Cezire’ye yabancıların girmesini yasaklamıştır. 1947’nin sonlarına gelindiğinde bu dostluk antlaşması sonrasında Sovyet Rusya’nın maddi desteğiyle Ermeni ve Kürt grupları Suriye’nin kuzeyinde ilk kez milis güç olarak kullanılmaya başlanmıştır. Bu durum zaman içerisinde Türkiye’nin güney sınırını hareketlendirmiştir.
Çalışmada 1947 Türkiye-Ürdün Dostluk Antlaşması’nın imzalanması sonrasında Türkiye-Suriye ilişkilerinde yaşanan krizin temellerinin ne zaman ve nasıl atıldığı tespit edilmiştir.
Pacific oysters are a sink and a potential source of the eelgrass pathogen, Labyrinthula zosterae
Authors: Agnew MV , Groner ML , Eisenlord ME , Friedman CS , Burge CA
Published: October 2022

Oyster aquaculture and seagrasses often co-occur and are each vital to the ecological and economic value of coastal ecosystems. Global declines in seagrasses, including Zostera marina, have recently been observed in association with multiple factors, including infection with diseases such as seagrass wasting disease (SWD), caused by the protist Labyrinthula zosterae. Protection of seagrasses has led to restrictions on oyster aquaculture due to perceived negative impacts on seagrass beds; however, positive impacts may also occur. An important aquaculture species, the Pacific oyster Crassostrea gigas, can filter L. zosterae from the water, potentially reducing pathogen transmission, although oysters may vector infection if they accumulate and release live L. zosterae into the water. We investigated whether oyster presence decreases lesion severity and infection intensity in eelgrass, or acts as a vector of L. zosterae, via laboratory and field experiments. In the laboratory, oysters and eelgrass were exposed to L. zosterae for 24 h and kept at 11°C or 18°C for 13 d. In the field, eelgrass ramets were deployed with and without oysters for 28 d adjacent to eelgrass known to have SWD. In the laboratory experiment, the presence of oysters significantly decreased lesion severity and infection intensity, but oysters previously exposed to L. zosterae did transmit the pathogen to naïve eelgrass. Temperature did not affect oyster ability to mitigate SWD; however, increased temperature significantly increased lesion severity. Oysters had no effect on SWD in the field. Further research is needed regarding the potential for oysters to vector L. zosterae and to quantify when oysters reduce SWD in the field.
SYMBOLIC MESSAGES OF KERAWANG GAYO’S TRADITIONAL PATTERNS
Authors: Efendi Muhsin , Harahap Viana Safrida , Basri Hasan
Published: October 2022

The present study aimed to analyze the meaning of symbolic messages found in the Kerawang Gayo's traditional patterns and their applications into Gayo’s traditional clothing. The present study also discusses efforts needed to preserve Kerawang Gayo. The present research applied a historical and ethnographic approach. Data was collected through the processes of documentation, observations and interviews. The results of present study show 14 Kerawang Gayo’s patterns; (1) Tapak Sleman (Footprint of Sulaiman), (2) Tali Puter Tige (Rope Twisted Third Times) (3) Mata ni Lao (sun), (4) Pucuk ni Tuis (Bamboo Sprout), (5) Emun Berkunē (Fixed Clouds), (6) Emun Berangkat (Walking Clouds), (7) Peger (Fence), (8) Emun Beriring (Lining Clouds) (9) Rante (Chain) (10) Tali Mestike (Mustika’s Rope) (11) Tekukur (Measurement) (12) Cucuk Pengong (Circle) (13) Emun Mupesir (Splitting Cloud), (14) Sarak Opat (Four Elements In One Integrated Bond). The use of specific patterns and the colors of Gayo’s patterns depend on the wearer’s position in the society as Kerawang Gayo is regarded as a sacred item for people in Aceh.
ORGANIZATIONAL SEQUENCE, TURN-TAKING, AND ROLE-SWITCHING IN A HUMAN-ROBOT COMMUNICATION
Authors: Febriyanti Anggy Fian , Irham Irham
Published: October 2022

Research on artificial intelligence has developed rapidly since the last fifteen years. Social studies and humanities scholars including linguists has put much attention on the relation between human-robot communications from wider and multidiscipline perspectives. Nonetheless, there is only a dearth of research investigating turn, sequence, and role-switching in humanoid interaction. Focusing on Sophia, the humanoid robot, the present study aims to examine three elements of dialogic- communication related to conversation. The present study applies a descriptive qualitative approach to investigate the research subject. Data consists of forms of utterances taken from two Sophia’s video that will be categorized into a sequence of organization, turn-taking, and role-switching functions. The results  of present study show that Sophia is able to perform human-like interactional features in terms of providing adequate adjacency pairs, turn-taking, and a sequence of organizations. The present study shows that Sophia is not able to interrupt a conversation because it needs a brief moment of silence before replying.
Excavation of Medieval Partick 2016
Authors: Spence Beth , Atkinson John-James , Cross Morag , Ferguson et al Natasha , Simonson Jennifer
Published: October 2022

GUARD Archaeology Ltd were commissioned by Scottish Water to undertake an archaeological watching brief during ground works associated with the installation of a waste water outfall and associated Combined Sewer Outflow (CSO) as part of development works at Castlebank Street, Partick. Earlier adjacent archaeological works had identified a large ditch and sandstone well on the periphery of the area to the south-west ( Green 2019 ). The archaeological watching brief included the initial monitoring of borehole drilling, expanding to all overburden stripping along the full length of the working area for the drainage tract as well as the adjacent CSO area, stretching from the existing River Kelvin's edge to the boundary of Castlebank Street. The works identified the remaining extent of previously identified features, along with a wide range of further features of interest. These consisted of several distinct phases of structural stonework and two substantial intersecting ditches; a substantial assemblage of pottery was also recovered, along with several metal objects including a medieval decorative pin and a copper alloy decorative boss. The stonework likely relates to the seventeenth century Hutcheson's tower house, with some of the earlier deposits, pottery and metal objects possibly originating from activity around the earlier twelfth century Bishops' residence. Bore hole monitoring was undertaken in early 2016, while overburden stripping and archaeological excavation took place between February and August 2016.
THE RESULTS OF REFORMS IN THE FIELD OF TRAINING HIGHLY QUALIFIED PERSONNEL IN THE LATE XX- EARLY XXI CENTURY: POSTGRADUATE AND DOCTORAL STUDIES
Authors:   Ural Federal University the first President of Russia B. N. Yeltsin, Yekaterinburg, Russian Federation, ZAITSEVA EKATERINA , ZAPARIY VLADIMIR , ASRYAN GARRY ,   Military University. V. Sargsyan MO RA, Yerevan, Armenia
Published: October 2022

The article is a continuation of the article previously published in the journal «The results of reforms in the field of training highly qualified personnel in the late XX - early XXI century: scientific personnel». The authors made an attempt to analyze the reproduction of scientific and scientific-pedagogical personnel by scientific and research, educational organizations of higher education and organizations of additional professional education in the Russian Federation. In society, there has always been an interest in higher education, especially in the system of training highly qualified personnel, postgraduate education and doctoral studies. The current institutional crisis of the education system has affected both undergraduate and postgraduate education. The presented results evaluate the process of training highly qualified educational personnel, the effectiveness of the institute of postgraduate and doctoral studies in Russia.
DÜNYADA VE TÜRKİYE’DE YAŞANAN PANDEMİ SÜRECİNİN ÇALIŞMA HAYATINDA YARATTIĞI DÖNÜŞÜM ÜZERİNE BİR DEĞERLENDİRME
Authors: BERK Ali , TÜRKMEN İsmail
Published: October 2022

2019 yılının sonlarında Çin’de başlayan ve daha sonra bütün dünyayı etkisi altına allan Covid-19, Dünya Sağlık Örgütü tarafından Mart 2020’de pandemi olarak ilan edilmiştir. Bu tarihten itibaren insan sağlığını koruma amacıyla alınan her önlem ve arada geçen süre ekonomik ve sosyal hayatı neredeyse durdurma noktasına getirmiştir. Ekonomik faaliyetlerin büyük ölçüde yavaşlaması ise etkisini en çok işgücü piyasalarında ve çalışma hayatında göstermiştir. İstihdam ve ücretlerde yaşanan gerileme başta çalışanlar olmak üzere insanlar üzerinde her geçen gün daha fazla baskı yaratmaktadır. Bu çalışmada Covid-19 ve sonrasında işgücü piyasalarında yaşanan gelişmeler değerlendirilmekte ve daha sonra çalışma hayatının geleceği üzerinde başta dijital alanda olmak üzere etkili olan dönüştürücü etkiler analiz edilmektedir. 11 Mart 2020’de ilk vakanın resmi olarak açıklandığı Türkiye’de ortaya çıkan sorunlar ve çalışma hayatı ekseninde belirgin hale gelen eğilimler ise ayrıca değerlendirilmektedir.
Prospects of renewable energy in Russia
Authors: Shevtsov A. S. , Provornaya I. V.
Published: October 2022

At the moment, it is believed that renewable energy sources will be able to solve the problems of limited resources and greenhouse gas emissions, the opportunities and prospects for their use are one of the important and relevant topics today. We can say that today humanity has entered a transitional period - from energy based on organic natural resources, which are limited to energy on an almost inexhaustible basis. To date, all developed countries, one way or another, have plans to switch to AIE. Russia has also created a comprehensive program for conducting research and development work on the use of AIE. The program provides for a number of organizational measures for the industry to master production and large-scale implementation of energy supply systems operating on AIE.
The method to remove parts from the multi-step oil well centrifugal pump housing on a workbench
Authors: Chervov V. V.
Published: October 2022

Repair of centrifugal oil pumps requires their total tear-down, with removal of steel parts from the cylindrical housing made of thick-walled steel tubes. This paper describes the technology of removal of steel parts from the tube using an air-driven hammer with a piston of relatively small weight of 40 kg. The complete tear-down of the deep-well centrifugal pump is implemented using a facility with a guiding frame. The frame accommodates the mutually appressed air-driven hammer, a nozzle with a conical seating surface, a tube section with a side window and a stepped flange adaptor. The latter is pressed to the end face of the pump housing. The other end of the housing is butted on the energy sink fastened on the guiding frame. The described facility has a rod passed through the open end hole in the energy sink and along the opening of the housing, which interacts with the parts in the housing via one end and with the drive via the other end.
3D computational model of wedge penetrator-rock mass interaction dynamics
Authors: Sher E. N.
Published: October 2022

The paper describes computational model variants of penetration dynamics of a wedge-shaped tool in rock mass. The computation uses the quasi-static approximation of penetration resistance forces obtained preliminarily in 2D and 3D formulations. The scope of the analysis embraces the elastoplastic and elastic deformation events in the medium with regard to the equilibrium propagation of a main crack. The calculation results are compared with the experimental modeling data on impact-driven wedge penetration in an organic glass block. The comparison proves efficiency of the described computational models.
Medium resistance to rigid tool penetration
Authors: Chanyshev A. I. , Belousova O. E.
Published: October 2022

It is proposed to evaluate the effectiveness of the tool penetrating by the medium resistance to this action - the lower the resistance, the more effective the tool. The medium resistance can be determined by using rigid-type loading devices, when the immersion rate of the tool is monitored at steady loading speed. Another method is shock loading with measuring the penetration depth and the time to reach the depth. The paper provides a solution to the problem in dynamic setting that is the medium resistance to deformation is set at a given tool mass, its initial speed of immersion, known values of penetration depth and time. Comparing the resistance of the medium for differently sharpened tools, the one that delivers the minimum resistance of the medium at penetration to a given depth is selected.
Corporate efficiency factors of the management system of oil and gas companies in Russia
Authors: Angarov A. A. , Filimonova I. V.
Published: October 2022

The paper presents a factor analysis of the performance indicator of companies in the Russian oil and gas industry for 2014 and 2021. As a result of the analysis, it was revealed that the profitability of sales has the greatest impact on the change in the performance indicator of the industry. The classification of companies according to the degree of influence of factors on the change in the performance indicator has been compiled. The comparative analysis of factors of domestic and foreign companies was completed.
Dependence of the carbon intensity of the economies of the world on environmental factors
Authors: Krutilina A. D. , Provornaya I. V.
Published: October 2022

The paper considers the impact of key factors reflecting the country's transition to "green" energy on reducing the carbon intensity of countries. The revealed carbon price was calculated for the first time for some of the countries under consideration, and after constructing the panel data model, the main significant factors were selected. The country's GDP has the greatest impact on carbon intensity, and the carbon price is similar in influence to the share of renewable energy sources in consumption.
Energy Efficiency of Developed and Developing Countries
Authors: Petrova N. A. , Provornaya I. V.
Published: October 2022

The paper examines the dependence of economic growth on the level of energy consumption in various countries of the world, divided into groups according to the level of economic development and macroregions. It is shown that the impact of energy consumption on GDP is stronger in developing countries than in developed countries, weeks in OECD countries, which is explained by the extensive nature of economic development. This relationship is clearly seen in such macro-regions as the Asia-Pacific region, Africa, Central and South America. The energy intensity of the countries of the world is calculated and its downward trend is noted.
An example of the implementation of the concept of "accessible environment" in the CIS countries
Authors: Demidenko A. Yu.
Published: October 2022

The article discusses examples of the implementation of real estate objects, taking into account the "accessible environment" factor in the CIS countries, gives an example of a residential complex with a well-implemented factor and accessible to all population groups. The main idea was to show the diversity of applications of barrier-free real estate in the infrastructure of cities, as well as the modern adaptation of objects for people with different health abilities. When analyzing various sources, the negative aspects or difficulties in implementing a barrier-free environment were also considered.
The role, functions and tasks of research on the state of land resources
Authors: Zharnikov V. B. , Ilinykh A. L.
Published: October 2022

The modern directions of the use of land resources are discussed in order to specify the requirements for their natural, functional and other characteristics in the system of rational land use.
Real estate objects on EEKO cadastral and engineering topographic plans
Authors: Chukhvacheva Y. E. , Timofeev A. N.
Published: October 2022

The geometric component of the EEKO plans, cadastral OKS and engineering topographic plans is compared. Their similarities and differences are shown. Errors in geometry are investigated. It is noted as the most accurate and complete engineering and topographic plan, which undergoes a number of controls in the process of creation. Conclusion - in order to exclude gross errors in the metric position of real estate objects, it is necessary to control boundary and technical plans, which are the basis of on-duty cadastral maps.
Regulatory guillotine and a system of geodetic, cartographic instructions, norms and rules for performing engineering and geodetic surveys in the course of urban planning
Authors: Volegzhanin D. N.
Published: October 2022

The description of the regulatory impact of Part 5 of Article 32 of the Federal Law of December 30, 2015 No. 431-FZ "On Geodesy, Cartography and Spatial Data and on Amendments to Certain Legislative Acts of the Russian Federation" on the performance of geodetic works in the implementation of urban planning activities. Proposals are presented on the procedure for the development of normative-technical and methodological acts for the production of topographic-geodesic and cartographic works.
Keterkaitan antara nilai-nilai efektif, rata-rata, dan ripple
Authors: Murtono Ari
Published: October 2022

Besaran listrik adalah nilai efektif, nilai rata-rata, nilai puncak, nilai lembah, frekuensi, dan periode. Dalam sehari hari yang sering terdengar adalah istilah AC dan DC, besaran yang banyak dijumpai nilai RMS dan efektif. Nilai RMS dan efektif bagi orang awam tidak me-mahami dan tidak berusaha memahami, bahkan mahasiswa pun ma-sih banyak tidak memahami dan tidak penting untuk dipahami. Oleh karena itu pada penelitian ini peneliti meneliti selisih nilai kedua be-saran itu dan efeknya terhadap besaran lain. Kami menggunakan ana-lisis mathematika, hasil simulasi, kurva, analisis rangkaian. Akhirnya dapat menyimpulkan: 1. Jika nilai RMS sama dengan dengan nilai ra-ta-ratanya, maka besaran DC nyaris tanpa ripple. 2. Semua penyearah yang berasal dari jala-jala satu fasa sampai tiga fasa, frekuensi swit-chingnya sama dengan frekuensi jala-jala, sedang frekuensi ripple di luarannya bisa meningkat tergantung dari rangkaian dan jumlah fasa sumber daya nya. 3. Dengan mengubah rangkaian, dan atau memberi masukan lebih dari 1 yang berbeda fasa, maka akan meningkatkan frekuensi ripple dan frekuensi switching tetap semula. 4. Pada kon-verter DC-DC buck, dengan tegangan luaran yang tetap, maka diper-oleh: makin tinggi frekuensi ripple, dan atau makin tinggi dutycicle, dan atau indutansi makin besar, ripple luaran mengecil.
ABSTRACT
Electricity quantities are effective value, average value, peak value, valley value, frequency, and period. In everyday life, the terms AC and DC are often heard, quantities that are often found in RMS values and are effective. The value of RMS and it is effective for ordinary people do not understand and do not try to understand, even many students still do not understand and it is not important to understand. Therefore, in this study, researchers examined the difference in the values of the two quantities and their effects on other quantities. We use mathematical analysis, simulation results, curves, circuit analysis. Finally, we can conclude: 1. If the RMS value is the same as the average value, then the DC magnitude is almost without ripple. 2. All rectifiers come from single-phase to three-phase grids, the switching frequency is the same as the grid frequency, while the ripple frequency outside can increase depending on the circuit and the number of phases of its power source. 3. By changing the circuit, and or giving more than 1 input that is different in phase, it will increase the ripple frequency and the switching frequency remains the same. 4. In a DCDC buck converter, with a constant output voltage, we get: the higher the ripple frequency, and/or the higher the duty cycle, and/or the larger the inductance, the smaller the output ripple.
Implementasi skema pengacakan subcarrier OFDM dengan algoritma RSA pada NI-USRP
Authors: Sa’adah Nihayatus , Astawa I Gede Puja , Sudarsono Amang
Published: October 2022

Keamanan jaringan nirkabel merupakan salah satu hal terpenting dalam sistem komunikasi. Karena sinyal dikirim dari pengirim melalui saluran nirkabel, tidak hanya penerima yang sah, tetapi juga penyadap dapat menangkap dan menyimpan sinyal informasi dengan mudah. Penelitian ini mengeksplorasi skema keamanan komunikasi nirkabel dimana skema yang digunakan adalah pengacakan subcarrier. Pemancar dan penerima harus disinkronkan untuk mengembalikan subcarrier ke posisi semula. Sistem ini menggunakan algoritma RSA sebagai sinkronisasi. Teknologi keamanan pengacakan subcarrier diimplementasikan pada sistem OFDM. Sistem OFDM diimplementasikan menggunakan perangkat USRP. Hasil yang diperoleh dari penelitian ini membuktikan bahwa teknik keamanan yang digunakan tidak menurunkan kinerja sistem, bahkan dapat mengurangi jumlah kesalahan bit akibat teknik sinkronisasi. Dengan teknik sinkronisasi algoritma RSA, dari jarak pengujian 1 meter, 2 meter, dan 5 meter. Pada jarak 1 meter didapatkan hasil terbaik dengan penurunan error bit dari 19,04% menjadi 0% pada 32-QAM dan penurunan error bit dari 28,57% menjadi 4,76% pada 64-QAM.
 
ABSTRACT
Wireless network security is one of the essential things in communication systems. Since the signal is sent from the sender through a wireless channel, the legitimate receiver and eavesdropper can easily capture and store signal information. This study explores a wireless communication security scheme where the scheme used is subcarrier randomization. The transmitter and receiver must be synchronized to return the subcarrier to its original position. This system uses the RSA algorithm as synchronization. Subcarrier randomization security is implemented in OFDM system. OFDM system is implemented using USRP. The results from this study prove that security techniques don't reduce system performance, and can even reduce the number of errors due to synchronization techniques with RSA synchronization technique, with 1 meter, 2 meters, and 5 meters experiments. At 1meter distance is the best result with bit error drop from 19.04% to 0% on 32-QAM and a bit error drop from 28.57% to 4.76% on 64-QAM.
Machine learning techniques for modeling chemical absorption in CO2 capture process
Authors: Zheng Huilan , Mirlekar Gaurav , Nord Lars O.
Published: October 2022

Post-combustion carbon capture (PCC) technologies play an important role in the reduction of CO2 emissions to address climate challenges. This process is usually simulated in process simulation software based on first-principle models, which calculate physical properties directly from basic physical quantities such as mass and temperature. Using first-principle models usually requires a long computation time, which makes optimization and control difficult. In this study, machine learning algorithms, such as eXtreme Gradient Boosting (XGBoost) and Support Vector Regression (SVR), are investigated as potential alternative modeling approaches. XGBoost is an ensemble algorithm that is based on the decision tree and optimized by gradient boosting. SVR fits the best line within a predefined or threshold error value. These two algorithms are used to build models to predict the CO2 capture rate (CR) and specific reboiler duty (SRD) in a monoethanolamine-based PCC process. By using the XGBoost, the verification result shows R2 (a statistical measure that represents the fitness of the model) in predicting CR is 91.7% and in predicting SRD is 80.8%, while by using SVR the R2 in predicting CR and SRD is 87.9% and 87.2% individually. In addition, XGBoost and SVR take 0.022 seconds and 0.317 seconds respectively to predict CR and SRD of 1318 cases, while the first-principal process simulation model needs 3.15 seconds to calculate 1 case. The data-driven models built using the XGBoost algorithm are employed for further optimization, which aims to find an operating point to have a higher CR and lower SRD. Particle swarm optimization (PSO), a stochastic optimization technique based on the movement and intelligence of swarms, is implemented for the optimization. The CR and SRD for optimal operating conditions are 72.2% and 4.3 MJ/kg each. The computations are faster with the data-driven models incorporated in the optimization technique. Thus, the application of machine learning techniques in carbon capture technologies is demonstrated successfully.
Comparison of machine learning approaches for spectroscopy applications
Authors: Aslanidou Ioanna , Soibam Jerol
Published: October 2022

In energy production the characterization of the fuel is a key aspect for modelling and optimizing the operation of a power plant. Near-infrared spectroscopy is a wellestablished method for characterization of different fuels and is widely used both in laboratory environments and in power plants for real-time results. It can provide a fast and accurate estimate of key parameters of the fuel, which for the case of biomass can include moisture content, heating value, and ash content. These instruments provide a chemical fingerprint of the samples and require a calibration model to relate that to the parameters of interest.A near-infrared spectrometer can provide point data whereas a hyperspectral imaging camera allows the simultaneous acquisition of spatial and spectral information from an object. As a result, an installation above a conveyor belt can provide a distribution of the spectral data on a plane. This results in a large amount of data that is difficult to handle with traditional statistical analysis. Furthermore, storage of the data becomes a key issue, therefore a model to predict the parameters of interest should be able to be updated continuously in an automated way. This makes hyperspectral imaging data a prime candidate for the application of machine learning techniques. This paper discusses the modelling approach for hyperspectral imaging, focusing on data analysis and assessment of machine learning approaches for the development of calibration models.
Parameter and State Estimation for an Oil Production Model using Julia
Authors: Ban Zhe , Pfeiffer Carlos , Lie Bernt
Published: October 2022

Dynamic models of industrial processes play an instrumental role in the operation of such processes from smart sensors, data reconciliation, to advanced control. For good performance, a precise model is normally required. The issue of improving models has received considerable critical attention. In this work, we consider the estimation of model parameters and initial states of a gas lifting oil well model, followed by filtering of its states. By utilizing information from both first-principle model and data, the results are presented to show the estimated values and their uncertainties. Julia is the main programming language used in this study. This research study provided an opportunity to advance the understanding of the optimization and estimation for the oil well operation.
Modeling of the two-phase flow during depressurization of liquified CO2 in a pipe
Authors: Ibrahim Osama M. , Welahettige Prasanna , Vågsæther Knut , Lie Bernt
Published: October 2022

Modeling transient CO2 two-phase flow in a pipe is essential in studying depressurization mechanisms resulting from liquified CO2 accidental release. Generated data from such models predict the released flow characteristics and possible propagating fractures. Accordingly, they provide valuable input for risk prevention in designing and safely operating CO2 transport pipelines. CO2 depressurization simulation involves fluid-mechanical and thermodynamic models, primarily expressed by hyperbolic partial differential equations and an equation of state (EOS). Besides, these models are solved with appropriate numerical methods. This paper deals with a drift flux - homogeneous equilibrium model (HEM) construction utilizing central-upwind-weighted essentially non-oscillatory (WENO) numerical schemes to describe two-phase flow during CO2 decompression in a pipe. Rapid transition in mass, momentum, and energy at the interface between liquid and vapor phases is assumed in the flow HEM. Thus, the two-phase flow is in a thermal, mechanical, and chemical equilibrium. The thermodynamic properties are calculated by applying Span-Wagner EOS. The high-resolution second-order central, central-upwind, and third-order weighted essentially non-oscillatory (WENO) schemes have been executed with the HEM, and they effectively captured rapid phase transition. The central-upwind and essentially non-oscillatory (ENO) schemes' stencils can be appropriate for constructing a higher-order accuracy central-upwind-WENO scheme. This structured scheme uses a smoothness indicator as an alternative to the limiter function. Besides, the variables in the cell interface are determined by WENO reconstruction, while central-upwind is used to compute the flux properties.
Simulation of Flow in the Human Upper Airways Modeled as a Piping System Using the Hydraulic Diameter
Authors: Weisz Thor Gudmund , Müller Bernhard , Kristoffersen Reidar
Published: October 2022

Obstructive sleep apnea (OSA) is a medical condition characterized by repetitive obstructions in the human upper airways during sleep. Recent estimates from the United States show that the condition impacts 15% to 20% of the adult population. OSA treatment can be subdivided into surgical and non-surgical approaches. Non-surgical approaches such as continuous positive airway pressure (CPAP) devices have the highest success rates when used correctly. However, these approaches have low patient compliance due to the invasive nature of the devices during sleep, leaving surgery as a viable alternative for many. Predicting the outcome of OSA surgery is difficult due to the complex nature of both the airways and the surgeries themselves. CFD modeling of the airways is a helpful way to gain valuable insights into the flow structures and the impact of individual surgeries on the airways. However, CFD is not a viable approach for each patient-specific case due to its time-consuming nature. A pragmatic model has been created to predict the outcome of OSA surgery on a patient-specific basis to produce valid surgical estimates fast to be used by non-CFD engineers. The model transforms the human upper airways into a piping system by applying the hydraulic diameter equation on geometries created from CT scans. This paper aims to validate the use of the hydraulic diameter given by Dh = 4 · (A / Pe), where A is the cross-sectional area and Pe is the wetted perimeter, on the complex geometries of the nasal cavity and to provide a novel equation for the hydraulic diameter in the nasal cavity. The proposed hydraulic diameter equation is given by Dh = CDh · (A / Pe) where CDh is the hydraulic diameter coefficient. Airflow has been simulated through a simplified geometry using CFD to validate the hydraulic diameter and find an updated equation. Pragmatic model simulations using the hydraulic diameter have been compared to the results from CFD simulations to assess the pragmatic model’s accuracy. The results showed that the original hydraulic diameter did not give entirely accurate results and that the novel equation using CDh = 3.71 gave the pragmatic model better accuracy for the validation cases. Tuning the parameter CDh for flow in an OSA patient’s upper airways, the pragmatic model succeeded in quite accurately reproducing the area-averaged pressure in the patient’s upper airways.
Uncertainty quantification and sensitivity analysis during the development and validation of numerical artery models
Authors: Schäfer Friederike , Sturdy Jacob , Mesek Mateusz , Sinek Aleksander , Białecki Ryszard , Ostrowski Ziemowit , Melka Bartłomiej , Nowak Marcin , Hellevik Leif Rune
Published: October 2022

Increasing age and cardiovascular diseases lead to stiffening of the vasculature. Knowledge about an individual’s arterial stiffness gives insights into the current state of the cardiovascular system and it is considered to be a valuable diagnostic index. However, arterial stiffness cannot be measured directly. Numerical modelling based on measurements of flow and deformation in an individual’s artery enable an indirect means. Our research aims to develop a method to estimate the local arterial stiffness of an artery from non-invasive measurements through inverse modelling. Experimental measurement limitations and the unmeasurable nature of model input parameters lead to uncertainties in the model prediction. Uncertainty quantification and sensitivity analysis (UQSA) inform about how the model prediction is influenced by these uncertainties. Due to the computational expenses of 3D fluid-structure interaction (FSI) models, we reduced the model’s complexity to a 1D model. To verify the 3D-FSI implementation and validate the 1D implementation we performed simulated inflation tests and compared the results with analytical theory. 3D-FSI simulations were performed and compared to the 1D-model predictions for different simplification assumptions. To quantify the impact of uncertainties in input data, polynomial chaos expansion for UQSA was applied to the 1D-model. This analysis revealed the model input parameters which lead to the highest variability in model prediction. UQSA showed that variations in the Young’s modulus and the lumen radius lead to the largest variability in the 1D-model prediction. Thus, we focused in the validation process on the comparison between the the arterial wall behaviour between the 1D and the 3D-FSI model.