bluuebunny/crossref_metadata_2025_split huggingface dataset:
IDENTIFICATION OF METEOROLOGICAL CONDITIONS ASSOCIATED WITH VISIBILITY DEGRADING PHENOMENA
Authors: Стребкова Е.А. , Барт А.А. , Старченко А.В. 
Published: December 2024

С помощью методов машинного обучения (дерева решений и случайного леса) для задачи классификации выявляются метеорологические условия, способствующие ухудшению видимости в зимний период в г. Томск и соседних городах на данных объективного анализа NCEP и результатах расчётов модели WRF.
Using machine learning methods (decision trees and random forests) for the classification problem, meteorological conditions contributing to visibility degradation in the winter period in Tomsk and neighboring cities are identified based on NCEP objective analysis data and WRF model calculations.
INTERREGIONAL TRANSPORT OF SMOKE AEROSOL AND ITS IMPACT ON AIR QUALITY OF LAKE BAIKAL ATMOSPHERE
Authors: Дементьева А.Л. , Заяханов А.С. , Жамсуева Г.С. , Стариков А.В. , Цыдыпов В.В. , Бальжанов Т.С. 
Published: December 2024

В данной работе приведены результаты непрерывных измерений аэрозольной оптической толщи (АОТ) в летний период с 2019 по 2023 гг. в атмосфере юго-восточного побережья оз. Байкал (ст. «Боярский») с помощью наземных и спутниковых наблюдений и их анализ. Максимальная замутненность атмосферы наблюдалась с 2019 по 2021 гг., АОТ на длине волны 0,5 мкм варьировал от 0,23 до 0,27 в период крупномасштабных лесных пожаров в бореальных лесах Сибири и Якутии. Несмотря на то, что в 2022-2023 гг. количество и площадь лесных пожаров уменьшились, в отдельные дни отмечено увеличение АОТ из-за переноса дымового аэрозоля, что подтверждается данными MODIS (MAIAC) и траекторным анализом движения воздушных масс HYSPLIT. По результатам отбора проб проведен химический анализ состава аэрозолей, доминирующими ионами аэрозолей являются Cl-, K+, SO4^2-, Ca^2+, Na+. Данные ионы имеют хорошую взаимосвязь с K+ (r=0.8), который является ключевым показателем выбросов сжигания биомассы.
This work presents the results of continuous measurements of aerosol optical depth (AOD) during the summer period from 2019 to 2023 in the atmosphere of the southeastern coast of Lake Baikal (station "Boyarsky") using ground-based and satellite observations and their analysis. The maximum atmospheric turbidity was observed from 2019 to 2021, with AOD at a wavelength of 0.5 µm varying from 0.23 to 0.27 during large-scale wildfires in the boreal forests of Siberia and Yakutia. Although the number and area of wildfires decreased in 2022-2023, an increase in AOD was noted on certain days due to the transport of smoke aerosol, as confirmed by MODIS (MAIAC) data and HYSPLIT trajectory analysis of air mass movement. Chemical analysis of aerosol composition was conducted based on the collected samples, with dominant aerosol ions being Cl-, K+, SO4^2-, Ca^2+, Na+. The data ions show a good correlation with K+ (r=0.8), which is a key indicator of biomass burning emissions.
CARRIER PHASE MODEL OF TRANSIONOSPHERIC SIGNAL FOR TESTING FILTERING PROCEDURES AND CALCULATING SCINTILLATION INDICES
Authors: Данильчук Е.И. , Демьянов В.В. 
Published: December 2024

Разработана модель фазы несущей навигационного сигнала, которая учитывает влияние рефракционных эффектов, связанных с движением спутника; регулярного ионосферного слоя; низкочастотных вариаций фазы, вызванных перемещающимися ионосферными неоднородностями различных масштабов; вариаций фазы, вызванных френелевскими неоднормностями; шумы измерений приемника. Разработанная модель предназначена для оценки оптимальных параметров процедур фильтрации и усреднения при расчетах индексов состояния ионосферы, основанных на измерениях параметров трансионосферных сигналов, а также для определения характерных точек и областей на спектре вариаций фазы несущей.
A model of the carrier phase of the navigation signal has been developed, taking into account the influence of refraction effects associated with satellite motion; the regular ionospheric layer; low-frequency phase variations caused by moving ionospheric inhomogeneities of various scales; phase variations caused by Fresnel inhomogeneities; and receiver measurement noise. The developed model is intended for estimating optimal parameters for filtering and averaging procedures in calculations of ionospheric state indices based on measurements of transionospheric signal parameters, as well as for identifying characteristic points and regions on the spectrum of carrier phase variations.
ACTIVITY OF THE 10-DAY WAVE AS A POSSIBLE CAUSE OF ANOMALOUSLY EARLY FORMATION OF NOCTILUCENT CLOUD FIELDS
Authors: Соколов А.В. , Савенкова Е.Н. 
Published: December 2024

Анализ снимков в УФ-диапазоне арктического региона Северного полушария, получаемых инструментом CIPS, за период 2008-2022 гг, показал, что в 2013 г имеет место аномально раннее образование полей серебристых облаков. Для выявления причин аномалии была проанализирована волновая активность мезопаузы (0.002 гПа) в поле температуры по данным радиометрии EOS MLS. Результаты указывают на достаточно позднее (апрель-май) усиление 10-дневной планетарной волны, которая в другие годы либо отсутствует, либо сравнительно слабая, либо возникает в марте и ранее. Выдвинута гипотеза о том, что бегущая на запад планетарная волна с m = 1 и периодом 10 суток является возможной причиной аномально раннего формирования полей серебристых облаков.
An analysis of UV-range images of the Arctic region of the Northern Hemisphere obtained by the CIPS instrument from 2008 to 2022 showed that in 2013, there was an anomalously early formation of noctilucent cloud fields. To identify the causes of the anomaly, wave activity in the mesopause (0.002 hPa) temperature field was analyzed based on data from EOS MLS radiometry. The results indicate a significantly late (April-May) intensification of the 10-day planetary wave, which in other years is either absent, comparatively weak, or occurs in March or earlier. It is hypothesized that the westward-propagating planetary wave with m = 1 and a period of 10 days is a possible cause of the anomalously early formation of noctilucent cloud fields.
LONGLONGITUDE IRREGULARITIES OF IONOSPHERIC IONIZATION IN THE NORTHERN HEMISPHERE AND THEIR CONNECTION WITH DISTURBANCES OF THERMOSPHERIC MOLECULAR GAS DURING A GEOMAGNETIC STORM
Authors: Черниговская М.А. , Ратовский К.Г. , Сетов А.Г. , Хабитуев Д.С. , Калишин А.С. , Степанов А.Е. , Белинская А.Ю. , Бычков В.В. , Григорьева С.А. , Панченко В.А. 
Published: December 2024

Исследованы вариации ионосферных и термосферных параметров в северном полушарии на основе анализа данных высоко- и среднеширотной цепей евразийских ионозондов и приемников GPS/ГЛОНАСС в период сильной магнитной бури в октябре 2016 г. На главной фазе магнитной бури над Евразией наблюдался переход от положительного к отрицательному эффекту ионосферной бури как в высоких, так и средних широтах. Эффект отрицательной ионосферной бури на восстановительной фазе был вызван образованием обширных областей атмосферного газа с пониженным отношением концентраций [O]/[N2] над регионом высоких и средних широт Евразии.
The variations of ionospheric and thermospheric parameters in the northern hemisphere were investigated based on the analysis of data from high- and mid-latitude Eurasian ionosonde chains and GPS/GLONASS receivers during a strong geomagnetic storm in October 2016. In the main phase of the geomagnetic storm over Eurasia, a transition from a positive to a negative ionospheric storm effect was observed in both high and mid-latitudes. The negative ionospheric storm effect during the recovery phase was caused by the formation of extensive areas of atmospheric gas with reduced concentration ratio [O]/[N2] over high and mid-latitude regions of Eurasia.
CHANGES IN AMPLITUDE AND PHASE OF VLF RADIO SIGNAL FROM TRANSMITTER NWC REGISTERED IN YAKUTSK DURING THE SOLAR ECLIPSE ON APRIL 20, 2023
Authors: Корсаков А.А. , Козлов В.И. , Каримов Р.Р. 
Published: December 2024

Во время солнечного затмения 20 апреля 2023 года при затенении Луной радиотрассы NWC – Якутск зарегистрированы вариации амплитуды и фазы ОНЧ радиосигнала. Максимальное уменьшение амплитуды составило 1,4 дБ (3:40:30 UT), а повышение фазовой задержки сигнала составило 0,303 радиан (3:42:36 UT). Определен коэффициент, связывающий изменение эффективной высоты волновода Земля – ионосфера и логарифм отношения потока солнечного излучения во время затмения к полному потоку: H = 1,38±0,08 км. Максимальное изменение высоты волновода в период максимального затенения радиотрассы NWC – Якутск (3:42:36 UT) составило Δh = 2,21 км (линейная фаза затмения Φ = 0,916 на участке 68° N, 132° E).
During the solar eclipse on April 20, 2023, variations in the amplitude and phase of the VLF radio signal transmitted by NWC were registered in Yakutsk during lunar occultation. The maximum decrease in amplitude was 1.4 dB (3:40:30 UT), while the increase in phase delay was 0.303 radians (3:42:36 UT). A coefficient relating the change in effective height of the Earth-ionosphere waveguide to the logarithm of the ratio of solar radiation flux during the eclipse to the total flux was determined: H = 1.38±0.08 km. The maximum change in waveguide height during the peak of the lunar occultation of the NWC-Yakutsk radio path (3:42:36 UT) was Δh = 2.21 km (linear phase of the eclipse Φ = 0.916 at 68° N, 132° E).
TWO METHODS FOR ESTIMATING THE TREND OF IONOSPHERIC ELECTRON CONCENTRATION BASED ON DATA FROM IRKUTSK VERTICAL IONOSONDES
Authors: Ратовский К.Г. , Жеребцов Г.А. , Медведева И.В. 
Published: December 2024

Представлены два метода оценки долговременного тренда максимума электронной концентрации NmF2 по данным иркутских ионозондов. Первый метод оценки тренда NmF2 заключался в регрессионном анализе, изначально включающем в себя вклады солнечной и геомагнитной активности, а также наличие долговременного тренда. Второй метод оценки тренда сделан на основе анализа изменения коэффициентов простой регрессии NmF2 на F10.7 от цикла к циклу. Для дневных условий метод оценки тренда, основанный на множественной регрессии и метод оценки тренда, основанный на анализе изменения коэффициентов регрессии от цикла к циклу, дали близкий результат: тренд дает уменьшение NmF2 на ~ 0.5·100 000 электронов в кубическом сантиметре за 100 лет.
Two methods for estimating the long-term trend of the maximum electron concentration NmF2 based on data from Irkutsk ionosondes are presented. The first method of estimating the NmF2 trend involved regression analysis, initially including contributions from solar and geomagnetic activity, as well as the presence of a long-term trend. The second method of trend estimation is based on analyzing the change of simple regression coefficients of NmF2 to F10.7 from cycle to cycle. Under daytime conditions, the trend estimation method based on multiple regression and the trend estimation method based on the analysis of the change of regression coefficients from cycle to cycle yielded similar results: the trend indicates a decrease in NmF2 by approximately 0.5·100,000 electrons per cubic centimeter over a 100-year period.
VARIATIONS OF THE LOWEST OBSERVED FREQUENCIES DURING X-RAY SOLAR FLARES OF M AND X CLASS IN APRIL 2022
Authors: Иванова В.А. , Подлесный А.В. , Поддельский А.И. 
Published: December 2024

В работе проводится анализ откликов наинизшей наблюдаемой частоты (ННЧ) на семь рентгеновских солнечных вспышек классов M и X в апреле 2022 г. Данные наклонного зондирования (НЗ) были получены на трассе Магадан – Торы с интервалом между зондированиями 5 минут. Все исследуемые солнечные вспышки наблюдались в местное дневное время в интервале от 01 до 06 UT. Максимальные вариации ННЧ достигали 9 МГц от спокойного уровня во время наиболее интенсивных рентгеновских солнечных вспышек классов X1.1 (17.04.2022), M7.2 и X2.2 (20.04.2022), а также M9.6 (21.04.2022).
The study analyzes the responses of the lowest observed frequency (LOF) to seven X-ray solar flares of M and X class in April 2022. The oblique sounding (OS) data were obtained along the Magadan – Tory route with a 5-minute interval between soundings. All studied solar flares were observed during local daytime from 01 to 06 UT. The maximum variations of LOF reached 9 MHz from the quiet level during the most intense X-class solar flares X1.1 (April 17, 2022), M7.2, and X2.2 (April 20, 2022), as well as M9.6 (April 21, 2022).
MAIN SOURCES AND SINKS OF ODD OXYGEN AND HYDROGEN FAMILIES IN THE MESOSPHERE–LOWER THERMOSPHERE DURING DAYTIME
Authors: Чубаров А.Г. , Куликов М.Ю. , Беликович М.В. , Дементьева С.О. , Фейгин А.М. 
Published: December 2024

В данной работе в рамках глобальной трёхмерной химико-транспортной модели проведен анализ всех источников и стоков семейств нечётного кислорода и водорода и выделены основные химические реакции, определяющие дневную эволюцию этих семейств в зависимости от высоты, широты и сезона. Полученные результаты используются для упрощения алгебраических связей между компонентами этих семейств, следующих из условий фотохимического равновесия и предназначенных для восстановления плохо измеряемых малых примесей мезосферы на 50-80 км, валидации данных измерений или уточнения констант фотохимических реакций.
In this work, within the framework of a global three-dimensional chemical transport model, an analysis of all sources and sinks of odd oxygen and hydrogen families has been conducted, and the main chemical reactions determining the daytime evolution of these families depending on altitude, latitude, and season have been identified. The results obtained are used to simplify the algebraic relationships between the components of these families, derived from the conditions of photochemical equilibrium and intended for the retrieval of poorly measured minor impurities in the mesosphere at altitudes of 50-80 km, data validation, or clarifying the constants of photochemical reactions.
LONG-TERM LIDAR MONITORING OF THERMAL REGIME IN THE MIDDLE ATMOSPHERE OVER TOMSK
Authors: Маричев В.Н. , Бочковский Д.А. , Елизаров А.И. 
Published: December 2024

В работе выполнены обработка и анализ долговременных рядов вертикального распределения температуры в средней атмосфере (интервал высот 15 - 60 км) над Томском, полученных на базе регулярных измерений лидарной станции Института оптики атмосферы СО РАН за период 2010 - 2023 гг. На основе полученных экспериментальных данных выявлены региональные особенности внутри- и межгодовой изменчивости термического состояния средней атмосферы над Западной Сибирью и предложена более адекватная к реальным условиям термодинамическая модель средней атмосферы для данного региона.
This work presents the processing and analysis of long-term series of vertical temperature distribution in the middle atmosphere (height range 15 - 60 km) over Tomsk, obtained from regular measurements of the lidar station of the Institute of Atmospheric Optics SO RAS for the period from 2010 to 2023. Based on the obtained experimental data, regional features of intra- and interannual variability of the thermal state of the middle atmosphere over Western Siberia are identified, and a more appropriate thermodynamic model of the middle atmosphere for this region is proposed.
Hospital readmissions following catheter ablation for atrial fibrillation with THERMOCOOL™ STSF/ THERMOCOOL™ ST catheter with CARTO™ 3 system versus TactiCath™ catheter with EnSite™ system
Authors: Costea Alexandru I , Khanna Rahul , Iglesias Maximiliano , Rong Yiran 
Published: December 2024

Aim:
Radiofrequency (RF) catheter ablation (CA) is a mainstay treatment for atrial fibrillation (AF). RF catheters with contact force (CF) sensing technology and electroanatomical mapping systems enable real-time assessment of catheter tip-tissue interface CF, facilitating individualized and precise CA. This study examined inpatient hospital readmissions in patients with AF treated with THERMOCOOL™ ST/ THERMOCOOL™ STSF catheter with the CARTO™ 3 System versus TactiCath™ catheter with the EnSite™ System.
Materials
&
methods:
Patients undergoing CA for AF between 1 July 2019 to 30 November 2021 were identified from the Premier Healthcare Database and grouped based on use of THERMOCOOL ST/STSF or TactiCath™. Study outcomes were all-cause, cardiovascular (CV)-, and AF-related inpatient readmission at 91–365-day post-CA. Inverse probability of treatment weighting of propensity scores balanced baseline patient, comorbidity and hospital characteristics. A weighted generalized estimating equation (GEE) model examined differences in readmission outcomes.
Results:
A total of 15,518 patients met inclusion criteria (THERMOCOOL ST/STSF, n = 13,001; TactiCath™, n = 2517). Patient characteristics were generally well-balanced after weighting. Patients treated with THERMOCOOL ST/STSF + CARTO 3 had a 20% lower likelihood of all-cause inpatient readmissions (7.8 vs 9.3%, chi-square p = 0.041; odds ratio [OR]: 0.80, 95% confidence interval [CI]: 0.66–0.96, GEE p = 0.019) and a 21% lower likelihood of CV-related inpatient readmission (5.2 vs 6.2%, chi-square p = 0.133, OR: 0.79, 95% CI: 0.62–0.99, GEE p = 0.043) in 91–365-days post-CA versus those treated with TactiCath™ + Ensite. No significant differences were observed for AF-related readmissions.
Conclusion:
Patients undergoing CA for AF treated with THERMOCOOL ST/STSF + CARTO 3 had a significantly lower risk of all-cause and CV-related inpatient hospital readmission versus those treated with TactiCath™ + Ensite.
Hizmetkar Liderlik
Authors: Oğuzhan Yavuz Sezer 
Published: December 2024

İnsanlığın var olduğu andan itibaren süreçleri ve insanları yönetmek her zaman bir gereksinim olmuştur. Bu gereksinimin nedeni olayları, durumları ve geleceği bir düzene oturtmak ve sağlıklı kararlar alınabilmesini sağlamaktır. Bazen bilinçli bazen de bilinç dışı bir şekilde yapılan liderlik, birçok kapıyı aralarken bu sürecin bilim alanında araştırma konusu olması ise yakın zamana denk gelmektedir. Klasik liderlik yaklaşımlarının artık cevap bulmadığı bazı liderlik davranışları bilim insanlarını farklı arayışlara itme gereksinimini doğurmuştur. Bu bağlamda “Modern Liderlik Teorileri” çatısı altında birçok liderlik yaklaşımını görmek olanak dahilindedir. Özellikle hızla değişen ve gelişen dünyada liderlik algılarında da değişim ve gelişim göze çarpmaktadır. İnsan odaklı dönüşümün yaşandığı yirminci yüzyılda “Dönüştürücü Liderlik”, “Demokratik Liderlik”, “Vizyoner Liderlik”, “Otantik Liderlik” gibi yeni liderlik yaklaşımları modern dönemde bilimsel olarak karşımıza çıkarken literatürde kendisine yer bulan liderlik anlayışlarından biri de “Hizmetkar Liderlik” olmuştur.
İlk kez 1970 yılında Greenleaf tarafından “Servant as Leader” başlıklı makalesinde konu edilen Hizmetkar Liderlik, özellikle 90’lı yılların başında yoğun bir araştırma konusu olduğu görülmektedir. Söz konusu makale, özellikle lider özelliklerine yoğunlaşmıştır. Ancak yine Greenleaf (1972) “The Institution as Servant” isimli bir makale yayınlamış ve bu sefer sadece lider pozisyonundaki bireylerin değil aynı zamanda örgütlerin de hizmetkar liderlik yapma süreçlerine değinmiştir. Bu bağlamda Hizmetkar Liderlik, tek taraflı değil çok taraflı bir sürecin parçaları haline gelmiştir. Hizmetkar lider, salt bir şekilde hizmet etmeyi değil takipçileri için ortak ‘iyi’yi sağlamak ve çalışanların gelişimine katkı sunmak olarak tanımlanabilecektir (Page ve Wong, 2000). Bu durumda lider, gerektiğinde özverili olmalı, takipçilerin gereksinimini karşılamalı ve kendisi gibi lider yetiştirebilmelidir (Matteson ve Irving, 2006).
More on Willetts’ Speech
Authors: Curry Stephen 
Published: December 2024

In the days following Willetts’ big science policy speech, there had been a piece in
<em>
Nature
</em>
by Daniel Sarewitz and letters from disgruntled physical scientists to the EPSRC that in different ways highlighted the role of scientists in directing research funding. I was therefore asked by the Guardian higher education network to offer some further thoughts on who should decide how science is supported by public money.
Reinventing Excel
Authors: Curry Stephen 
Published: December 2024

In
<em>
Reinventing Discovery
</em>
Michael Nielsen says that one of the great things about the Internet is the way it can connect problems with problem-solvers. Well, let’s see if that’s true. I have a problem with Excel, or rather, with a particular spreadsheet that I would like someone to solve elegantly. You can download a version of my spreadsheet here. The image below shows the contents.
New Moon
Authors: Curry Stephen 
Published: December 2024

I have little to say this evening apart from reporting that I came home tonight and caught the new moon before it dipped behind the trees. Thought some of you might want to have a look.
<em>
Moon over Kent
</em>
And my daughter and I espied the Orion Nebula; unfortunately my photographic equipment is not up to recording that.	But this astronomy lark is
<em>
the business
</em>
.
How to value what cannot be measured?
Authors: Curry Stephen 
Published: December 2024

<em>
This post is a transcript of my opening remarks at the a Great Debate held earlier today at the European Geosciences Union 2019 meeting in Vienna. The debate asked us to consider the question:
<strong>
What value should we place on contributions that cannot be easily measured?
</strong>
</em>
<strong>
Update (13/04/2019):
</strong>
A video of the whole debate is now available online.
ICYMI No.1: Preprints for biologists
Authors: Curry Stephen 
Published: December 2024

Since I have developed a habit of writing elsewhere, which necessarily takes time and words away from the blog here at Reciprocal Space, I thought I would try to make amends by developing the habit of linking to the pieces that appear in other corners of the internet. To kick off therefore, permit me to alert you to a short article this week published in The Biologist, the house magazine of the Royal Society of Biology.
Open Access: Money and Data talk and say the same thing?
Authors: Curry Stephen 
Published: December 2024

One of these days — I promise — I will get back to writing about science. But a conjunction of tweets today brought to me three articles on open access that were interesting in different ways but curiously all seemed to point in a similar direction. First, a post on the Scholarly Kitchen blog (h/t Alicia Wise) from Rick Anderson, who is the Associate Dean for Scholarly Resources &amp;
2019 in 31 photographs
Authors: Curry Stephen 
Published: December 2024

My computer tells me I took over 3,700 photographs in 2019. Yikes! However, I have winnowed them down to just 31, should you care to take a look. I have been fortunate this year to travel far and wide – or should I say reckless? Either way, if you click on the image above, it will take you to the album on flickr.
And then just drizzle some liquid nitrogen…
Authors: Curry Stephen 
Published: December 2024

At the Diamond synchrotron last week, Jamie Oliver would have been proud of us.	Amar and I pitched up last Thursday afternoon at the great gleaming doughnut in the Oxfordshire countryside with the latest batch of Amar’s crystals, packed carefully into a dry nitrogen dewar to keep the little jewels frozen at a chilly 80K. Because we were sharing the beamtime with other users from Imperial our slot didn’t start until about 8.30 in the evening.
TELEKOMMUNIKATSIYA KOMPANIYALARIDA FOYDA SOLIG‘I AUDITINING O‘ZIGA XOS XUSUSIYATLARI
Authors: Pashaxodjayeva Dildora , Oxunjanova Mohchehra 
Published: December 2024

Ushbu maqola telekommunikatsiya kompaniyalarida foyda solig‘i auditining o‘ziga xos xususiyatlari haqida bo‘lib, unda telekommunikatsiya kompaniyalarida audit o‘tkazishning o‘ziga xos xususiyatlari, billing tizimining afzalliklari, shuningdek amalga oshirilishi zarur bo‘lgan vazifalar bayon qilingan.