bluuebunny/crossref_metadata_2025 huggingface dataset:
MOLECULAR CLONING, BIOINFORMATION ANALYSIS AND EXPRESSION OF THE STRICTOSIDINE SYNTHASE IN Dendrobium officinale
Authors: Zhu Yan-Fang , Fan Hong-Hong , Li Da-Hui , Jin Qing , Zhang Chuan-Ming , Zhu Li-Qin , Song Cheng , Cai Yong-Ping , Lin Yi
Published: July 2020

The enzyme strictosidine synthase (STR, EC: 4.3.3.2) plays a key role in the biosynthetic pathway of terpenoid indole alkaloid (TIA). It catalyzes the condensation of the tryptamine and secologanin to form 3α(S)-strictosidine, which is the common precursor of all TIAs. In this paper, a STR gene designated as DoSTR (GenBank: KX068707) was first cloned and characterized from Dendrobium officinale with rapid amplified cDNA ends method (RACE). DoSTR has a length of 1380bp with 1179bp open reading frame encoding 392 amino acids. BlastP analyses showed that its amino acid sequence was classified into Str_synth superfamily. qRT-PCR showed that DoSTR was expressed in all tissues tested, with a significantly higher level in flower and the lowest in stem. Four different treatments with MeJA, SA, ABA and AgNO3, respectively, could induce the DoSTR expression to a different extent. And the effect of MeJA was the most obvious and transcript level of DoSTR induced by MeJA was 20.7 times greater than that of control at 48 hours after treatment. Furthermore, it was found that DoSTR was localized in vacuole through transient expression in tobacco. The characterization and expression of DoSTR can help in further studying the role of DoSTR in the biosynthesis of TIAs in D. officinale. This study may throw light on the alkaloid biosynthesis pathway of D. officinale.
EFFECT OF PRESSURE LIQUID EXTRACTION AND ULTRASONIC IRRADIATION FREQUENCY ON INULIN, PHENOLIC CONTENT AND ANTIOXIDANT ACTIVITY IN BURDOCK (Arctium lappa L.) ROOTS
Authors: Petkova Nadezhda , Ivanov Ivan , Mihaylova Dasha , Lante Anna
Published: July 2020

Burdock (Arctium lappa L.) roots are traditionally used in folk medicine as diuretic and curing rheumatism, gastritis, gout, throat pain, arthritis and rashes. These pharmacological properties are due to many bioactive compounds such as flavonoids and fructooligosaccharides. Nowadays, the the application of  “green” methods for extraction of natural compounds gains more and more attention. The object of the current research was to determine inulin and sugars content, phenolic content and antioxidant potential in 70% ethanol and water extracts obtained by two “green“ extraction methods, namely pressure-liquid extraction and ultrasound-assisted techniques. The content of total fructans, as well as inulin and sugars were analyzed by spectrophotometric resorcinol-thiourea method and high-performance liquid chromatography with refractive index detection. Total phenols and flavonoids were determined by Folin-Chiocalteu and Al(NO3)3 reagents. Antioxidant activity was evaluated by four reliable methods (DPPH, ABTS, FRAP and CUPRAC). The established inulin content varied from 0.27 to 4.0 g/100 g dw in prevalence of the ultrasound-assisted extract obtained with water. Additionally, the established phenolic compounds content (from 10.35 to 18.16 mg gallic acid equivalent (GAE)/g dw) and antioxidant activities demonstrated the burdock roots as potential source phytonutrients with health beneficial properties.
POT MARIGOLD (Calendula officinalis L.) – A POSITION IN CLASSICAL PHYTOTHERAPY AND NEWLY DOCUMENTED ACTIVITIES
Authors: Szopa Agnieszka , Klimek-Szczykutowicz Marta
Published: July 2020

The flower (inflorescence, basket-type inflorescence) of marigold (Calendulae officinalis flos) is a well-known plant raw material in traditional phytomedicine. Noteworthy is its rich chemical composition, which is dominated by flavonoids and terpenoids. Terpenoids are mainly represented by specific for this species oleanolic acid derivatives: triterpenoid saponins – calendulosides A-H and triterpenoid glycosides, so-called calendulaglycosides A and B. The biological activity profiles of the raw material, such as anti-inflammatory, antimicrobial, immunostimulatory and antioxidant properties, determine its use especially in the treatment of dermatological diseases. Interestingly, recent scientific studies proved, in addition to spasmolitic, hypolipemic and antidiabetic properties, such heath promoting activity as cardioprotective, hepatoregenerative, pancreas regenerating, neuroprotective and even anticancer activities. Moreover, C. officinalis is used in cosmetology and food industry.
REPRODUCTIVE BIOLOGY OF TWO EDIBLE HONEYSUCKLES [Lonicera edulis Turcz. ex Freyn., Lonicera kamtchatica (Sevast.) Pojark.] IN THE CONDITIONS OF SOUTHWESTERN SLOVAKIA
Authors: Ďurišová Ľuba , Juríková Tünde , Eliáš Pavol Jr , Mlček Jiří
Published: July 2020

The formation and development of reproductive organs and fruits was examined for two edible honeysuckle species Lonicera edulis Turcz. ex. Freyn. and Lonicera kamtchatica (Sevast.) Pojark. ‘Gerda’ using cytological and embryological methods. We found out that the flower initiation has began during June in the conditions of southwestern Slovakia. Male and female archespores were differentiated before entering winter dormancy. In most cases we have observed normally developed tetrads, normal appearance of microspores, two-celled polen grains and mature pollen grain. In both species a sufficient amount of normally developed pollen grains was observed. Disturbances during female gametophyte development occurred occasionally, most mature ovules contained 7 cells female gametophyte. Our research pointed to fact that the species are protogynous. Flowering usually takes place in the first half of April. The fruits were mature in the second half of May. We have found that 10 to 11 fully developed seeds have evolved in the fruits of both representatives of Lonicera on average. The above results show the suitability of L. edulis and L. kamtchatica cultivation in SW Slovakia with a relatively low risk of fruit loss due to climatic conditions.
EVALUATION OF SEED YIELD, OIL AND MINERAL CONTENTS IN-BRED PUMPKIN LINES (Cucurbita pepo L.) UNDER WATER STRESS
Authors: Seymen Musa , Dursun Atilla , Yavuz Duran , Kurtar Ertan Sait , Özbahçe Aynur , Türkmen Önder
Published: July 2020

Water stress is one of the main constraints which could limits crop productivity, especially in arid and semi-arid regions characterized limited water resources. This study was conducted to investigate the seed yield, oil and mineral contents of 44 lines and 4 commercial pumpkin varieties (2 local and 2 hybrids) in irrigated and drought stress conditions. The study was conceived as a randomized block design with three replications and carried out during the 2017 growing season. On average, the irrigated plots produced 161.27 kg da–1 seed yield whereas it was 33.67 kg da–1 in non-irrigated plots. The highest yield among the commercial pumpkin varieties was obtained from the G2 hybrid variety in the irrigated conditions. On the other hand, in the non-irrigated plots, higher seed yields were obtained from G9, G34, and G36 pure lines. Drought resulted in a remarkable decrease in the total oil content and significant increase in the amount of Ca and Zn in pumpkin seeds. These results clearly indicated that G9 line, which has the highest seed yield in both irrigated and drought conditions, can be utilized as a recommendable parental pumpkin line in future hybrid breeding efforts.
Are LAGs contributing to solving social exclusion problems? The case of Kujawsko-Pomorskie Voivodship
Authors: Kola-Bezka Maria
Published: July 2020

The article draws on research covering all local action groups (LAGs) operating in Kujawsko-Pomorskie Voivodship. The objectives include: determining what portion of local development activities implemented by LAGs are activities for social inclusion and what their expected effects are; and determining whether LAG activities for social inclusion are adequate to the scale of social exclusion in the areas where they operate. The research demonstrates that actions against social exclusion were provided for in the strategies of 26 out of 28 LAGs and they were usually not central, but only one of several categories of planned projects. The research also revealed that in the voivodship there is no relationship between the level of threat of social exclusion in the areas where LAGs operate and the level of social inclusiveness of their strategies. It is suggested that the scale and effects of the social inclusion projects planned by LAGs are not adequate to the problems actually occurring in the areas covered by their activity.
Towards Industrial Energy Efficiency Index
Authors: Dolge Kristiāna , Kubule Anna , Rozakis Stelios , Gulbe Inga , Blumberga Dagnija , Krievs Oskars
Published: July 2020

The study analyses factors that determine industrial energy efficiency. Composite index methodology was applied to evaluate energy utilization efficiency levels across different industrial sub-sectors. In total 12 indicators were incorporated in 3 main dimensions – economic, technical, and environmental. The first results for dimension sub-indices of the 18 main manufacturing sub-sectors in Latvia were presented and discussed. The findings of the study indicated that sector-specific disparities exist that significantly impact the energy efficiency performance of each industrial sub-sector.
Consistent prediction of absolute permeability in carbonates without upscaling
Authors: Khodja Mohamed R. , Li Jun , Hussaini Syed Rizwanullah , Ali Abdelwahab Z. , Al-Mukainah Hani S. , Jangda Zaid Z.
Published: July 2020

We describe a study focused on the absolute permeability of reservoir carbonate rocks from the Middle East and involving comparison of experimental data and numerical estimates obtained by combining digital-rock and Lattice-Boltzmann Methods (LBM). The question of the “representativeness” of the site at which the simulation is performed is addressed as follows. First, a low-resolution, CT X-ray scan of the core plug is performed to identify regions of large porosity (millimeter-sized vugs, etc.). These regions are then avoided to postselect smaller sites (site volume ~ 1 mm3) which are to be scanned at higher resolutions (voxel size < dominant pore-throat size of the core plug). A “representativeness” criterion based on an empirically-inspired “representativeness” measure (R-measure) is used to eliminate those sites for whichR > b, wherebis an upper bound (typically,b = 1). Essentially, the measure estimates how well the postselected sites capture the experimental porosity and the dominant pore-throat size of the core plug. This leads to a small set of sites for which the simulations are both computationally manageable and yield a reasonable estimate of the permeability: the experimental and predicted values differ by a factor of about 3 on average, which is a particularly significant result given the challenging heterogeneous pore space of carbonate samples. We believe the suggested methodology to be an adequate and practical way to circumvent upscaling.
Morphology of land Uses in Aqaba City during the Period (2000-2020)
Authors: Bazazo Ibrahim , Al-Orainat Lama’a Mahmoud , Al-Shamaileh Maher Odeh Falah
Published: July 2020

The aim of this research is to identify the morphology of land usage in the city of Aqaba from the year 2000 through 2020, utilizing satellite data analysis and visualizations of topographic maps studying land uses and spatial organizations and relationships between all relevant users in the study area.

By relying on GIS and remote sensing software, with the aim of providing a holistic picture that contributes to identifying the current reality of land uses and future forecasting within the actual territories, the study found that the importance of integrated management based on an analysis of the morphology of land use contributed most to sustainable planning. Morphological projections relating to land uses contributed the most to correct decision making in pursuit of a more holistic planning process for the study area.
Revealing Hidden Debottlenecking Potential in Flare Systems on Offshore Facilities Using Dynamic Simulations -- a Preliminary Investigation
Authors: Somozas Ana Xiao Outomuro , Nielsen Rudi P. , Maschietti Marco , Andreasen Anders
Published: July 2020

Three flare systems are modeled and total plant depressurization is investigated using dynamic simulations in order to access the debottlenecking potential. Usually steady-state simulation of the flare network is used for sizing and rating of the flare system. By using dynamic simulations effects from line packing in the flare system can be studied. The results show that peak flow during a dynamic simulations is significantly lower than the peak flow used in a steady-state case.

The three systems investigated span a wide range in flare system size, both in terms of number of process segments disposing into the flare network, in terms of peak design rate and the flare network pipe dimensions and total hold-up volume. Generally, it is observed that the larger the flare system, the larger debottlenecking potential.
Copper-Catalyzed Asymmetric Umpolung Hydroamination: an Unified Strategy for the Synthesis of Chiral β-Amino Acid and Its Derivatives
Authors: Xiong Tao , Guan Wei , Zhang Qian , Zhang Ge , Liang Yujie , Qin Tao , Liu Shuyu
Published: July 2020

Herein,we reported an unified Cu-catalyzed asymmetric umpolung hydroamination, which is capable of direct preparation of a series of beta-amino acid, ester, amide and nitrile in a highly regio- and enantioselective manner, without the requirement of traditional pre-installation of stoichiometric quantities of auxiliaries.
Microstructure and Materials Properties of Understoichiometric TiBx Thin Films Grown by HiPIMS
Authors: Thörnberg Jimmy , Palisaitis Justinas , Hellgren Niklas , Klimashin Fedor , Ghafoor Naureen , Zhirkov Igor , Azina Clio , Battaglia Jean-Luc , Kusiak Andrzej , Sorica Maurico A. , Greene J.E. , Hultman Lars , Petrov Ivan , Persson Per , Rosen johanna
Published: July 2020

In the present research article we report synthesis of TiBx, 1.43n-situ mass- and energy-spectroscopy is used to explain the obtained compositional range. Excess B in overstoichiometric TiBx thin films from DCMS results in a hardness up to 37.7±0.8 GPa, attributed to the formation of an amorphous B-rich tissue phase separating stoichiometric TiB2 columnar structures. With a particular focus on characterization of the understoichiometric samples, we show that understoichiometric TiB1.43 thin films synthesized by HiPIMS exhibit a superior hardness of 43.9±0.9 GPa, where the deficiency of B is found to be accommodated by Ti planar defects. The apparent fracture toughness, electrical resistivity and thermal conductivity of the same sample is 4.2±0.1 MPa√m, 367±7 μΩ·cm and 5.1 W/(m.K), respectively, as compared to corresponding values for overstoichiometric TiB2.20 DCMS thin film samples of 3.2±0.1 MPa√m, 309±4 μΩ·cm and 3.0 W/(m.K).
Computational Investigation of Structural Dynamics of SARS-CoV-2 Methyltransferase-Stimulatory Factor Heterodimer Nsp16/nsp10 Bound to the Cofactor SAM
Authors: Sk Md Fulbabu , Jonniya Nisha Amarnath , Roy Rajarshi , Poddar Sayan , Kar Parimal
Published: July 2020

Recently, a highly contagious novel coronavirus (COVID-19 or SARS-CoV-2) has emerged as a global threat in people's health and global economies. Identification of the potential targets and development of a vaccine or antiviral drugs is an urgent demand. The 5’-capping mechanism of eukaryotic mRNA and some viruses such as coronaviruses (CoVs) are essential for maintaining the RNA stability, protein translation, and for viral immune escape. SARSCoV encodes S-adenosyl-L-methionine dependent (SAM) methyltransferase (MTase) enzyme characterized by nsp16 (2’-O-MTase) for generating the capped structure. The present article highlights the binding mechanisms of nsp16 and nsp10 to identify the role of nsp10 in MTase activity. Furthermore, the conformational dynamics and energetic behind the SAM binding to nsp16 in its monomer and dimer form was analyzed by using an extensive molecular dynamics simulation along with the Molecular Mechanics Poisson-Boltzmann Surface Area (MM/PBSA). Our results show that the presence of nsp10 increases the favorable van der Waal and electrostatic interactions between the SAM and nsp16, thus nsp10 acts as a stimulator for its strong binding. The interaction profile suggests that hydrophobic interactions were predominately identified for protein-protein interactions. Also, the stable hydrogen bond between Ala83 (nsp16) and Tyr96 (nsp10), and between Gln87 (nsp16) and Leu45 (nsp10) plays a vital role in the nsp16-nsp10 interface. Further, Computational Alanine Scanning (CAS) mutagenesis was performed, which revealed hotspot mutants, namely I40A, V104A, and R86A for the dimer association. Therefore, the dimer interface of nsp16/nsp10 could also be a potential target to suppress the 2’-O-MTase activity of SARS-CoV-2. Overall, our study provides a comprehensive understanding of the dynamic and thermodynamic process of binding of nsp16 and nsp10 that will contribute to the novel design of peptide inhibitors based on nsp16.
Cherrypicking Resolvents: A General Strategy for Convergent Coupled-Cluster Damped Response Calculations of Core-Level Spectra
Authors: Nanda Kaushik , Krylov Anna
Published: July 2020

Damped response theory calculations within the higher-level coupled cluster methods such as EOM-CCSD are typically divergent in the X-ray regime due to the coupling of response states with the valence ionization continuum. We provide a novel strategy for convergent response calculations in the X-ray regime within the damped response EOM-CCSD framework that include contributions from both the core and valence states to the response.
Electroreduction of CO2 to Formate with Low Overpotential Using Cobalt Pyridine Thiolate Complexes
Authors: Dey Subal , Todorova Tanya K. , Fontecave Marc , Mougel Victor
Published: July 2020

Electrocatalytic CO2 reduction to value-added products provides a viable alternative to the use of carbon sources derived from fossil fuels. Nevertheless, the ability to carry out these transformations at reasonable energetic costs, e.g. with low overpotential, remains a significant challenge. Molecular catalysts offer a great option in this context, as fine control of their activity and selectivity can be obtained via the tuning of their coordination sphere and ligand set. To this end, we investigated here a series of cheap cobalt(III) pyridine-thiolate complexes as electrocatalysts for CO2 reduction. The effect of the ligands and proton sources on activity was examined. We were able to identify [bipyridine-bis-(2-pyridinethiolato)-cobalt(III)-hexaflurophosphate] as a highly selective catalyst for formate production operating at a very low overpotential of 110 mV to achieve a TOF of 10 s-1. Detailed electrokinetic analysis coupled with density functional theory allowed establishing a mechanistic pathway for these catalysts, highlighting the role of key metal hydride intermediates. The catalysts deactivate via the formation of stable Co carbonyl complexes, but we demonstrated that the active species could be regenerated upon oxidation and release of coordinated CO ligands.
Acute and chronic toxicity studies on Polygonum glabrum in experimental animals
Authors: Saravanakumar A  , Gandhimathi R
Published: July 2020

Polygonum glabrum is being used in traditional and folklore medicine to treat pneumonia and jaundice. Plant roots are used in ayurvedic preparations to treat fever and colic. The leaves are used as diuretic agents and process vermifuge action. Plant decoction is also used in the treatment of Rheumatism. Besides having many uses and folklore claims, herbal medicines are to be thoroughly investigated for their toxicity also. Therefore this work is being carried out to examine the toxicity of the drug and established dose is safe to use in the clinical stage. The current research studied the acute and chronic toxicity of Polygonum glabrum root extract in rats. It is proved that there was no change in any parameter tested both in acute and chronic toxicity, which means the extract is safe and non-toxic at the dose of 2g/kg also.
Investigating the possible mechanism for potency of latex of Plumeria alba L. in treating scabies
Authors: Bhavani J  , Ravichandran S
Published: July 2020

Human body has multiple complex processes that enable the regular and effective functioning of all the systems. During the process, organs undergo wear and tear and heal themselves on a rgular basis. But due to physiological stress, they tend to produce some free radicals which are the sole reasons for few diseases like alzhimers, tissue damage, parkinsons disease and some skin conditions like scabies, and aging. Herbs are used as best treatment for a numerous diseases which had an underlying mechanism of action as antioxidant activity. So it is confirmed that the oxidative free radicals are the reasons for the causing of most of the diseases. It is ideal that the herbs that are rich in flavonoids and poly phenols that has good antioxidant activity will pocess potency against many of the diseases. The latex of the plant Plumeria alba L. was used as a treatment of scabies (Sura et al., 2018). The plant latex was potent and used to treat many diseases. The under lying mechanism was not yet known. It is assumed on the fact that antioxidant activity of drugs is responsible for many other activities. So, the present research focus on the establishing and investigating the anti-oxidant activity of the plant latex invitro. The latex had shown a effective antioxidant activity and the mechanism of the above activities exactly correlate and support the anti scabies activity of the latex.
Recent Updates Published About Favipiravir in COVID-19
Authors: Elham Alshammari
Published: July 2020

Due to its high transmission potential, COVID-19 disease has turned out to be a worldwide public health threat. As of May 2020, over 5M infections and 300,000 deaths had been reported globally. At the moment, there is limited research evidence from RCTs recommending certain drugs for the treatment of suspected or confirmed COVID-19 patients. However, a number of studies have proposed numerous antiviral agents as a potential treatment option based on experiments done on animal models infected with other viral diseases. One such drug is favipiravir. The purpose of this review, therefore, was to examine recent updates about favipiravir and its likely role in the treatment of coronavirus disease. As has been previously reported in literature, favipiravir acts as a broad-spectrum medication that prevents the multiplication of flavivirus, filovirus, poliovirus, arenaviruses, and rhinovirus. The drug has recently been reported in some studies as useful in shortening the time of clinical recovery for COVID-19 patients. The study guaranteeing the usefulness of favipiravir in the treatment of the virus has since been withdrawn temporarily. The analysis in the study was largely open-label and non-randomized. Even with its adverse pharmacokinetic profile and the inconclusive data regarding its usefulness in the management of COVID-19, China has authorized the drug as a suitable treatment of COVID-19 patients as of March 2020. Still, favipiravir has been included in a number of ongoing trials, together with other antiviral drugs, such as lopinavir/ ritonavir.
International business with Central and Eastern Europe: From tyranny of history to revisited laboratories of learning
Authors: Rašković M , Dikova D , McDougall-Covin TP
Published: July 2020

No description supplied
A Decade of Impact: A JEEMS Bibliometric Science Map
Authors: Notes Research
Published: July 2020

This bibliometric research note analyses the impact of the Journal of East European Management Studies (JEEMS) since its SSCI indexation. We analyse 91 papers in English, showing that most papers are country and/or case specific, with a large majority of papers associated with the international business discipline. The strongest contributions have been made to the general international business literature and the literature on corporate social responsibility, as well as culture studies. We identify several gaps and outline future research directions.
РАЗРАБОТКА КОНЦЕПЦИИ ОТЕЧЕСТВЕННОГО СРЕДНЕГО ВОЕННО-ТРАНСПОРТНОГО САМОЛЕТА С ТУРБОРЕАКТИВНЫМИ ДВУХКОНТУРНЫМИ ДВИГАТЕЛЯМИ
Authors: Bychkov S. A. , Donets A. D. , Shmyrev V. F.
Published: July 2020

Рассмотрены особенности конструктивных и технологических изменений отечественного военно-транспортного самолета (ВТС), связанных с установкой турбореактивных двухконтурных двигателей (ТРДД) CFM Leap вместо турбовинтовентиляторных двигателей (ТВВД).Отмечены и квалифицированы изменения, связанные с улучшением самолета по результатам наземных и летных испытаний, учетом стандартов НАТО, касающихся конструкции планера и систем самолета.Рассмотрены технологические аспекты организации производства отечественного военно-транспортного самолета с ТРДД.Создание отечественного среднего военно-транспортного самолета (Ан-188) с ТРДД производится с максимальным использованием научно-технического задела, наработанного при создании отечественного среднего военно-транспортного самолета с ТВВД с сохранением основных конструктивных, аэродинамических и прочностных характеристик с учетом выполнения требований летной годности EASA CS-25, MIL-STD, STANAG.
ИССЛЕДОВАНИЕ МЕТОДОВ ПОВЫШЕНИЯ ЭФФЕКТИВНОСТИ РАБОТЫ ФАКЕЛЬНЫХ ВОСПЛАМЕНИТЕЛЕЙ КАМЕР СГОРАНИЯ ГТД
Authors: Torba Yu. I. , Pavlenko D. V. , Tkach D. V.
Published: July 2020

Исследование посвящено задаче повышения эффективности и надежности работы факельных воспламенителей камер сгорания газотурбинных двигателей. Учитывая, что основным путем повышения эффективности работы факельного воспламенителя является увеличение количестваодновременно воспламеняемой топливно-воздушной смеси, исследовано влияние увеличение расхода воздуха через воспламенитель и пульсирующей подачи пускового топлива. Целью исследования являлась оценка влияния перепада давления топлива на пусковой форсунке, а также его пульсацию и увеличение расхода воздуха через воспламенитель на эффективность работы воспламенителя турбореактивного двухконтурного двигателя. Для ее достижения были решены задачи, связанные с экспериментальным исследованием влияния на температуру факела пламени воспламенителя, в широком диапазоне изменения температуры воздуха и топлива, расхода воздуха, давления топлива и режима работы форсунки. Экспериментальные исследования проведены в широком диапазо не температур и давления воздуха, что позволило имитировать работу воспламенителя на земле и в условиях полета летательного аппарата. Впервые установлены зависимости температуры факела воспламенителя от перепада давления топлива и температуры воздуха на входе воспламенителей, имеющих различный расход воздуха. Также установлены зависимости температуры факела от исследуемых параметров в случае применения импульсной подачи пускового топлива. Показано комплексное влияние увеличения расхода воздуха и применения импульсатора топливанаэффективность работы факельного воспламенителя. Сделан вывод о неоднозначности влияния указанных факторов при различных температурах окружающего воздуха и давления. Показано, что для разработки рекомендаций по повышению эффективности работы воспламенителей в широком диапазоне эксплуатационных условий необходимо проведение комплекса исследований по оптимизации геометрических параметров воспламенителя, а также скважности подачи импульсов топлива в зависимости от окружающих условий.
ОПЫТ ИЗГОТОВЛЕНИЯ ДЕТАЛЕЙ ФЮЗЕЛЯЖА ВЕРТОЛЁТА ИЗ КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ НА СТАНКАХ С ЧПУ
Authors: Mozgovoj V. F. , Klochikhin V. V.
Published: July 2020

Обосновано, что внедрение высоких технологий и успешная эксплуатация высокоскоростного оборудования с ЧПУ с применением современной инструментальной оснастки при обработке композиционных материалов позволяет успешно развивать украинское вертолётостроение. Исследования, проведенные в производственных условиях, показывают широкие возможности в расширении номенклатуры обрабатываемых деталей из композитных материалов на высокоскоростном оборудовании. Рассмотренные особенности технологии обработки деталей вертолёта могут быть использованы при дальнейших исследованиях в области обработки композиционных материалов и повышения надёжности авиационной техники.
ПІДХОДИ ЩОДО КОРЕКЦІЇ РАННІХ СТАДІЙ ПРОЕКТІВ НАУКОЄМНОГО МАШИНОБУДУВАННЯ
Authors: Krivova S. G. , Zubanjov A. Ye.
Published: July 2020

Представлений аналіз підходів до формування цілей проекту на ранніх стадіях проектів наукоємного машинобудування.Показана можливість неефективності проекту внаслідок безальтернативного формування цілей у випадку недостатньої компетенції Замовника проекту та недостатньої формалізації процедур прийняття рішень на ранніх стадіях проектів наукоємного машинобудування.Запропоновані заходи щодо формалізації процедур прийняття рішень на ранніх стадіях проектів наукоємного машинобудування.
ОРГАНІЗАЦІЙНО-ФУНКЦІОНАЛЬНА МОДЕЛЬ СИСТЕМИ ОЦІНКИ ВІДПОВІДНОСТІ СУБ’ЄКТІВ ТА ОБ’ЄКТІВ АВІАЦІЙНОЇ ДІЯЛЬНОСТІ В УКРАЇНІ (В ПОРЯДКУ ОБГОВОРЕННЯ)
Authors: Matvienko V. A. , Krivova S. G. , Kainov M. M.
Published: July 2020

Однією з найгостріших проблем, які можуть бути вирішені на сучасному етапі розвитку українського авіабудування є імпортозаміщення та диверсифікація імпорту, забезпечення автентичності матеріалів та напівфабрикатів, комплектуючих виробів, що використовуються для виробництва та ремонту авіаційної техніки.Важливою умовою вирішення цієї проблеми є створення та забезпечення функціонування системи об’єктивної оцінки відповідності суб’єктів та об’єктів авіаційної діяльності вимогам нормативно-правової та нормативно-технічної баз вітчизняного авіабудування.Наведена нижче інформація відображає погляди авторів щодо можливих варіантів організаційно-функціональної моделі системи оцінки відповідності суб’єктів та об’єктів авіаційної діяльності, яка має бути створена в Україні.
Analisis Kesalahan Siswa Kelas VII dalam Menyelesaikan Soal Geometri
Authors: Hadiyanto Fahrur Rozi
Published: July 2020

Triangle and rectangle are material taught at the junior high school level. However, there are still many students who make mistakes in solving geometry problems. This can be a reference to find out what are difficulties experienced by students. The purpose of this study is to find out the types and causes of student errors in solving geometry problems. This research uses a qualitative approach. The subjects in this study were 3 students of class VII A MTs Surya Buana Malang. The results showed that the types of errors made by students were concept errors, procedural errors, and errors in understanding the questions. Concept errors made by students were errors in the types of triangle, properties of quadrilateral shapes, definitions of quadrilateral, concepts of operations on number, concepts of circumference, area of triangle and area of rectangle. Procedural errors made by students were mistakes in giving unit of perimeter or area, calculation, and understanding the problem. The causes of the error were students not being able to distinguish between angle and line segment, not being able to distinguish types of triangle based on angle and side, not being able to understand the concept of number operations, lacking accuracy, not understanding the difference in area and number of angle in triangle, lack of variation in questions given by the teacher, and lack of understanding about perimeter and area of the quadrilateral.ÃÂ AbstrakSegitiga dan segiempat merupakan materi yang diajarkan pada tingkat SMP. Akan tetapi, masih banyak siswa yang melakukan kesalahan dalam menyelesaikan soal geometri. Hal ini dapat menjadi acuan untuk mengetahui kesulitan apa saja yang dialami siswa. Tujuan dari penelitian ini adalah untuk mengetahui jenis dan penyebab kesalahan siswa dalam menyelesaikan soal geometri. Penelitian ini menggunakan pendekatan kualitatif. Subjek penelitian ini adalah 3 dari 33 siswa kelas VII A MTs Surya Buana Malang. Hasil penelitian menunjukkan bahwaÃÂ  jenis kesalahan yang dilakukan siswa meliputi: kesalahan konsep, kesalahan prosedur, dan kesalahan dalam memahami soal. Kesalahan konsep yang dilakukan oleh siswa meliputi: kesalahan jenis segitiga, sifat-sifat bangun segiempat, definisi segiempat, konsep operasi pada bilangan, konsep keliling dan luas segitiga dan segiempat. Kesalahan prosedural yang dilakukan oleh siswa adalah kesalahan pemberian satuan keliling atau luas dan kesalahan perhitungan. Kesalahan lain yakni dalam memahami soal. Sedangkan penyebab kesalahan tersebut antara lain siswa belum mampu membedakan antara sudut dan ruas garis, belum mampu membedakan jenis segitiga berdasarkan sudut dan berdasarkan sisi, belum mampu memahami konsep operasi bilangan, kurang teliti, belum memahami perbedaan luas dan jumlah sudut dalam segitiga, kurangnya variasi soal yang diberikan guru, dan kurang memahami keliling dan luas segiempat
Pengaruh Kemampuan Berpikir Divergen dan Kemandirian Belajar terhadap Hasil Belajar Matematika Siswa
Authors: Rauf Jumardi , Halim Siti Nur Humaira , Mahmud Randy Saputra
Published: July 2020

The aim of this study to know the influence of divergent thinking ability and self reliance learning towards students learning results. This is an ex-post facto research, the samples was 102 students from ninth class SMPN 24 Makassar. The instruments was divergent thinking skills test, koesioner self reliance learning, and test of studentÃ¢â¬â¢s mathematical learning results. The results of a descriptive analysis showed that the ability to think divergent students in middle category with average score 55.91, standard deviation 10.623 of the 100 ideal score with percentage 42.42%. The self reliance of learning students in the high category with average score 60.03, standard deviation 6.528 of the 80 ideal score with percentage 74.2%. The results of students learning in the good categorized with average score 80.77, standard deviation 6.416 of the 100 ideal score with percentage 53%. The result of inferential analysis shows that the divergent thinking ability positively and significantly affects the learning results of 0.183. Self reliance learning also positively and significantly affect the learning results of 0.101. The results of inferential show that divergent thinking ability and self reliance learning simultaneously influence the results of mathematics learning students with regression equation Y=70,119+0,009X1+0,181X2.ÃÂ AbstrakTujuan dari penelitian ini yaitu untuk mengetahui ada tidaknya pengaruh kemampuan berpikir divergen dan kemandirian belajar terhadap hasil belajar matematika siswa. Jenis penelitian yang digunakan dalam penelitian ini adalah jenis penelitian ex-post facto, dengan mengambil sampel dari siswa kelas IX SMPN 24 Makassar sebanyak 102 orang. Instrumen yang digunakan dalam penelitian ini adalah tes kemampuan berpikir divergen, kuesioner kemandirian belajar dan tes hasil belajar matematika. Hasil analisis statistik deskriptif menunjukan bahwa kemampuan berpikir divergen siswa dikategorikan sedang dengan skor rata-rata 55,91 dan standar deviasi 10,623 dari skor ideal 100 dengan persentase 42,42%. Kemandirian belajar siswa berada pada kategori tinggi dengan rata-rata 60,03 dan standar deviasi 6,528 dari skor ideal 80 dengan persentase 74,2%. Sedangkan hasil belajar siswa dikategorikan baik dengan skor rata-rata 80,77 dan standar deviasi 6,416 dari skor ideal 100 dengan persentase 53%. Hasil analisis inferensial menunjukkan bahwa terdapat pengaruh positif dan signifikan antara kemampuan berpikir divergen terhadap hasil belajar matematika sebesar 0,183, terdapat pengaruh positif dan signifikan antara kemandirian belajar terhadap hasil belajar matematika sebesar 0,101, serta terdapat pengaruh positif dan signifikan secara simultan antara kemampuan berpikir divergen dan kemandirian belajar terhadap hasil belajar matematika persamaan regresi Y = 70,119 + 0,009X1 + 0,181X2ÃÂ
U.S. Foreign Policy Towards Taiwan: Obama vs. Trump
Authors: TEMUR Nur Seda
Published: July 2020

As Donald Trump won the vote in the U.S. presidential elections in 2016, many anticipated a number of changes in the U.S. foreign policy. In this sense, China and Taiwan were not exceptions. With respect to this outcome, this paper will address the following question: How did the U.S. Foreign Policy towards Taiwan change from the Obama administration to the Trump administration? Regarding this question, in this paper, I will try to defend the view that as long as U.S.- China economic rivalry and trade war persists, Taiwan will remain under U.S. protection, regardless of a change in administrations in the U.S. This study will be a qualitative case study. In particular, in order to compare the U.S. foreign policy towards Taiwan under Obama and Trump administration, the data will be gathered from secondary resources through document analysis. These sources will be composed of relevant books, articles, academic journals, research papers, and newspapers gathered from libraries. These sources will be used for elaborating on foreign policies of Obama and Trump administration on Taiwan.
Do It Yourself Monopoly in the Late Soviet Period
Authors: Abramov Roman
Published: July 2020

This article examines the role of the monetary world inclusion in the world of children’s games in the late Soviet period by opening a previously unknown page of board games’ social history in the USSR and describes the practices of playing Do It Yourself (DIY) Monopoly by Soviet children in the 1980s. Soviet teenagers used friendly relationships to exchange tacit knowledge about the basic rules of the board business game. They made playing fields and developed the rules of the game, using school knowledge about the principles of the capitalist economy. The article shows the game rules’ evolution of the DIY Soviet Monopoly versions and shows the creativity of the Soviet teenagers in the re-invention of the rules of the board business game. DIY Monopoly versions were a form of adaptation of western goods to socialist conditions, which were common practice in the Soviet Union since its inception.
A ROSE BY ANY OTHER NAME? STRATEGIC COMMUNICATIONS IN ISRAEL
Authors: Siman-Tov David , Fridman Ofer
Published: July 2020

The term strategic communications is missing from the Israeli academic and
professional discourse. Instead, there are three different conceptual approaches
to state communication in Israel—hasbara, public diplomacy, and cognitive
campaign. Analysing the history of the development and employment of these
three concepts, this article makes two contributions important for the field of
strategic communications. First, it analyses how Israel has found itself with
various approaches; why it does not have one comprehensive framework; and
whether any of the three approaches can be considered the equivalent of ‘Israeli
strategic communications’. Second, based on the case of Israel, it establishes the
need for states to have an exhaustive conceptual framework to conduct strategic
communications and the consequences of the absence of such a framework.
SHAPING AN ANTARCTIC IDENTITY IN ARGENTINA AND CHILE
Authors: Cardone Ignacio Javier
Published: July 2020

Since the end of the 19th century, both Argentina and Chile have woven Antarctica—the white continent—into the conception of their national territories and identities, establishing a tradition that continues today. To understand the process through which these identities have been constructed, this article examines the strategic communications of the countries involved in the dispute over territories south of 60° south latitude. Early negotiations were incidental and reactive, but as the situation evolved internationally the two South American countries became entangled in their strategies to incorporate portions of Antarctica into their national territories, employing diplomatic interchange, symbolic actions, and the projection of an Antarctic identity by means of public discourse, educational curriculum, and maps. Furthermore, they promoted the idea of an ‘American Antarctica’ as a way of linking Antarctica with the South American continent in an effort to obtain international recognition for their territorial claims. Both countries were successful in instilling a domestic ‘national Antarctic consciousness’, but failed to gather international support. Although their strategic communications regarding Antarctica were successful in terms of the original objective of integrating the idea into their respective national identities, resorting to territoriality seems to have limited their ability to adapt to new conditions, such as those established by the Antarctic Treaty in 1959.
COMMUNICATING THREAT IN AN ERA OF SPEED AND FETISHISED TECHNOLOGY
Authors: Allen Karen
Published: July 2020

A Review Essay by Karen Allen

Army of None: Autonomous Weapons and the Future of War
Paul Scharre. WW Norton & Company, 2019.
Future War—Preparing for the New Global Battlefield
Robert Latiff. Alfred A. Knopf, 2017.

Keywords—strategic communications, strategic communication, technology, big data, cyberspace, international relations, future warfare
Chapter 3_Các phương pháp nghiên cứu - Scientific reasoning, the logic behind scientific research
Authors: Tung Dao Duy
Published: July 2020

Inductive and Deductive reasoning in research methodology
Chapter 1-Tổng quan về nghiên cứu-Introduction Research methods on business contexts.pdf
Authors: Tung Dao Duy
Published: July 2020

Overview of research, business research, and the importance of business research at undergraduate and graduate level.
Understanding subprocesses of working memory through the lens of model-based cognitive neuroscience
Authors: Trutti Anne C. , Verschooren Sam , Forstmann Birte , Boag Russell James
Published: July 2020

Working memory (WM) refers to a set of processes that makes task-relevant information accessible to higher-level cognitive processes. Recent work suggests WM is supported by a variety of information gating, updating, and removal processes, which ensure only task-relevant information occupies WM. Current neurocomputational theory suggests WM gating is accomplished via ‘go/no-go’ signalling in basal ganglia-thalamus-prefrontal cortex pathways, but is less clear about other subprocesses and brain structures known to play a role in WM. We review recent efforts to identify the neural basis of WM subprocesses using the recently developed reference-back task as a benchmark measure of WM subprocesses. Targets for future research using the methods of model-based cognitive neuroscience and novel extensions to the reference-back task are suggested.
Action monitoring fails when motor execution is too fast: no time for correction
Authors: Ramdani  , sagui emmanuel , schmid bruno , castagna olivier , Davranche Karen , Vidal Franck , Hasbroucq Thierry
Published: July 2020

A recent information processing model of two-choice RT situations (Servant et al., 2015), suggests that conditions which reduce the duration of peripheral motor processes, should also reduce the efficiency of the action monitoring system, because letting no time enough for correction of partial errors (i.e. subthreshold transient muscle activity of the agonists of the incorrect response preceding the correct response). A physiological situation, namely sustained physical exercise, has repeatedly been reported to reduce the duration of response execution. Therefore, in order to test the prediction of the model, we compared action monitoring efficiency between a sustained exercise (59.42% of MAP) and a control (15 W) condition in the same subjects while they were performing a Simon task. Electromyographic (EMG) recordings of muscles implicated in the response allowed to measure premotor time (time interval between the stimulus and the onset of the EMG burst) and motor time (MT, time interval between the onset of the EMG burst and the mechanical response, which gives access to response execution processes). Electromyogram further permitted to unmask partial errors. Correction ratio was calculated by dividing the number of partial errors by the number of incorrect activations (partial errors + errors). As expected, exercise decreased MT. In addition, exercise reduced the correction ratio. Furthermore, there was a positive inter-subject correlation between these two dependent variables. In line with Servant et al.'s model (2015), we propose that the drop in the efficiency of cognitive control was due to insufficient MT available for action monitoring to operate when incorrect activations were produced.
Alcohol and Nicotine Polygenic Scores are Associated with the Development of Alcohol and Nicotine Use Problems from Adolescence through Young Adulthood
Authors: Deak Joseph D. , Clark D. Angus , Liu Mengzhen , Schaefer Jonathan , Jang Seonkyeong , Durbin C. Emily , Iacono William G. , McGue Matt , VRIEZE SCOTT , Hicks Brian M.
Published: July 2020

Background: Molecular genetic studies of alcohol and nicotine use have identified many genome-wide significant loci. We examined associations between drinking and smoking polygenic scores (PGS) and trajectories of alcohol and nicotine use outcomes from late childhood to early adulthood, substance-specific versus broader-liability PGS effects, and if PGS performance varied for consumption and problematic use. Methods: We fit latent growth curve models with structured residuals to scores on measures of alcohol and nicotine use and problems from age 14 to age 34. We then estimated associations between the intercept (initial status) and slope (rate of change) parameters and PGSs for drinks per week (DPW), problematic alcohol use (PAU), cigarettes per day (CPD), and ever being a regular smoker (SMK). PGSs were calculated for participants of the Minnesota Twin Family Study (N=3225) using results from the largest genome-wide association studies of alcohol and nicotine consumption and problematic use to date. Results: Each PGS was associated with trajectories of use for their respective substances (i.e, DPW and PAU for alcohol; CPD and SMK for nicotine). The PAU and SMK PGSs also exhibited cross-substance associations (i.e., PAU for nicotine, SMK for alcohol). The SMK PGS was a significant predictor of all nicotine and alcohol use trajectories, even after adjusting for the respective effects of all other PGSs. Conclusions: Substance use-related PGSs vary in the strength and generality versus specificity of their associations with substance use over time. The SMK PGS was the most robust predictor of substance use trajectories and seems to measure both nicotine-specific and non-specific genetic liability for substance use, and potentially externalizing problems in general.
Publication Trends in Personality and Individual Differences, 1980–2018
Authors: Webster Gregory D. , Turner Imani , Losee Joy Ellen , Mahar Elizabeth , Wongsomboon Val
Published: July 2020

An analysis including 679 articles from the journal Personality and Individual Differences (PAID) investigated trends from 1980 to 2018. Time periods were separated into three groups: 1980–1984, 2000, and 2018. First, the number of title words per article was examined, which showed a linear increase over time. Second, the most frequent words per PAID article were investigated over time. The most frequent title words across three time points were, predictably, “personality,” “individual,” and “differences.” Title word frequencies also unveiled trends such as the adoption of the Big Five and Dark Triad traits, and an increasing interest in latent modeling of personality traits. Third, we explored the number of authors per article, which showed a linear increase across the three time points. Lastly, we identified the most-cited articles from 1980 to 2018. Themes from some of the most influential articles included scale development, scale and construct comparisons, review articles, and innovative methods. Although personality psychology has some constant themes over time, these findings suggest that it continues to be an influential and dynamic field open to incorporating emerging topics and evolving trends over time.