bluuebunny/crossref_metadata_2025 huggingface dataset:
Consumption frequency of junk food, simple carbohydrate intake, and total cholesterol levels in Esa Unggul University employees
Authors: Lestari Nurindah , Sitoayu Laras , Nadiyah Nadiyah , Dewanti Lintang Purwara , Wahyuni Yulia , Sumitra Putri Azahra
Published: May 2023

This study aims to determine the relationship of the frequency of consuming junk food, intake of simple carbohydrates, physical activity and total cholesterol levels in Esa Unggul University employees. This type of research is observational with cross sectional research design. The total population of 400 respondents obtained the number of samples using stratified random sampling is as many as 60 respondents selected with respondents ranging from age 27-61 years. Data collected are frequency of consuming junk food using food frequency (FFQ) instruments for the past 1 month, physical activity using 2x24 hour Physical Activity Level (PAL) instrument form, simple carbohydrate intake using 2x24 hour food recall instrument and total cholesterol level using instrument check instrument digital cholesterol. Data analysis in this study used the Pearson correlation test. Average junk food consumption with a score (95.7 ± 64.96), physical activity (1.67 ± 0.21), intake of simple carbohydrates (77.64 ± 32.91) grams and total cholesterol levels (184, 7 ± 36.25) ml / dl. There was a relationship between consuming junk food (P = 0.0001; r = 0.454), intake of simple carbohydrates (P = 0.006; r = 0.349) and total cholesterol levels. However, there was no relationship between physical activity and total cholesterol levels (P = 0.167; r = -0.181).
Abstrak: Penelitian ini bertujuan untuk mengetahui hubungan frekuensi mengonsumsi junk food, asupan karbohidrat sederhana, aktivitas fisik dan kadar kolesterol total pada karyawan Universitas Esa Unggul. Jenis penelitian ini bersifat observasional dengan desain penelitian cross sectional. Jumlah populasi 400 responden didapatkan jumlah sampel dengan menggunakan cara stratified random sampling adalah sebanyak 60 responden yang terpilih dengan responden mulai dari usia 27–61 tahun. Data yang dikumpulkan yaitu frekuensi mengonsumsi junk food menggunakan instrumen food frequency (FFQ) 1 bulan terakhir, aktivitas fisik menggunakan instrumen form Physical Activity Level (PAL) 2x24 jam, asupan karbohidrat sederhana menggunakan instrumen food recall 2x24 jam dan kadar kolesterol total menggunakan intrumen alat cek kolesterol digital. Analisis data pada penelitian ini menggunakan uji korelasi pearson. Rata-rata mengonsumsi junk food dengan skor (95,7 ± 64,96), aktivitas fisik (1,67 ± 0,21), asupan karbohidrat sederhana (77,64 ± 32,91) gram dan kadar kolesterol total (184,7 ± 36,25) ml/dl. Terdapat hubungan antara mengonsumsi junk  food (P=0,0001; r=0,454), asupan karbohidrat sederhana (P=0,006; r=0,349) dan kadar kolesterol total. Namun, tidak ada hubungan antara aktivitas fisik dan kadar kolesterol total (P=0,167; r=-0,181).
Community engagement to control dengue vector in two municipalities of Aragua State, Venezuela
Authors: Martínez María , Mijares Victor , Moreno Nancy , Pérez-Ybarra Luis , Herrera Flor de María
Published: May 2023

A safe and effective dengue vaccine is not ready yet; therefore, dengue prevention is necessary to control the spread of this infection. Lowering dengue disease depends on controlling mosquitoes by reducing Aedes habitats counting with community participation. We studied community participation on habitat reduction for immature stages of Aedes aegypti in two urban communities of the Aragua State from May 2009 to November 2018. The sample consisted of 100 houses of one community and 400 houses of the other. Fisher´s exact test was used to compare the proportions of positive houses or containers through the study period. House index, container index, and Breteau Index were calculated. The data were analyzed using Minitab 20.4 statistical software. The research team initiated the approach to the communities by contacting some of their natural leaders in January 2009.  The methodological strategies included workshops, lectures, seminars, document and video reviews, practices, discussions, and knowledge sharing within and with the community. After six months of the intervention, a significant reduction in the Aedes larval indices was found in both communities and lasted for the entire study period. The intervention increased public consciousness and participation in dengue vector control measures in residential areas, and this behavior change was sustainable over time.
Organisational Design Contingencies and Strategic Entrepreneurship of Small and Medium Scaled Enterprises in Nigeria: Organisational Sustainability Perspective
Authors: Nkuda Matthias O. , Okocha Belemenanya F.
Published: May 2023

This study evaluated organisational design contingencies and strategic entrepreneurship of Small and Medium-Scaled Enterprises in Nigeria: Organisational Sustainability Perspective. The study adopted a cross-sectional online survey and collected data using structured 5-point Likert Scale questionnaire. Using purposive sampling method, a population of 273 SMEs was adopted as the sample size. Through the use of the software programme, Smart PLS 4.0, the survey data were analysed and the proposed hypotheses were tested using the Partial Least Square Structural Equation Modeling (PLS-SEM) technique. The research found that the dimensions of organisational design contingencies (i.e. organisational size, technology, strategy) and measures of strategic entrepreneurship (i.e. exploration, innovation, exploitation) are positively and significantly correlated. Organizational sustainability has a positive significant moderating effect on the relationship between organisational design contingencies and strategic entrepreneurship. This study concluded that organisational design contingencies and strategic entrepreneurship of SMEs in Nigeria: Organizational Sustainability is positively and significantly related. This research recommends that there is a potential to support managers, decision-makers, and researchers to build, test, and validate similar models adding minor reforms and developing innovative and creative combinations of inherent capabilities and resources to realize the organizational sustainability in SMEs.
CAMILLE SAINT-SAËNS’IN “INTRODUCTION AND RONDO CAPRICCIOSO OP. 28” ESERİNİN KEMAN ÇALMA TEKNİKLERİ BAKIMINDAN İNCELENMESİ
Authors: KAYMAZ Batuhan , ZAFER Ahmet Hamdi
Published: May 2023

Bir eseri iyi bir şekilde icra edebilmek çok önemlidir. Eseri çalışmadan önce bestecisini tanımak ve icra edilecek eserin yazıldığı dönemi araştırmak, o döneme ait olan değişimleri, o dönemin çalgılarını, gelişimlerini, toplumsal bakış açılarını ve tarihsel gelişimini bilmek müziği çok daha iyi ifade edebilmek için yardımcı olacaktır.
Okuyucunun dikkatini çekecek olan Camille Saint-Saëns ve onun müziğinin hakkında yer alan, çeşitli materyallerden ve kaynaklardan toplanarak oluşturulan bu çalışma, Saint-Saëns hakkındaki yazıları, müziğini ve İntroduction and Rondo Capriccioso eserinin keman çalma teknikleri bakımından incelenmesi, gelecek kuşaklara bırakılacak bir kaynak olması hedeflenmiştir.
Bu çalışmada keman repertuvarının en önemli eserlerinden biri olan İntroduction and Rondo Capriccioso eserinin hakkında bilgilerin sunulması ve bu eserin çalış tekniklerinin incelenmesi, bu eseri icra edecek olan müzisyenlerin kullanabileceği bir ilk kaynak olarak sunulması amaçlanmıştır.
Restauraciones indirectas para el manejo de la Hipomineralización de Molares e Incisivos: un abordaje conservador.
Authors: Velásquez Baena Laura , Restrepo Restrepo Manuel , Mejía Roldan Juan Diego
Published: May 2023

Introducción: Técnicas adhesivas contemporáneas permiten la rehabilitación conservadora y estética de dientes afectados por caries dental, trauma dentoalveolar y defectos del desarrollo del esmalte. Para el tratamiento restaurador de la hipomineralización de molares e incisivos (HMI) se ha recomendado el uso de restauraciones indirectas. Reporte de caso: Paciente sintomático de sexo femenino, 8 años, portadora de HMI severa y comportamiento levemente negativo. Los dientes 16, 36 y 46 presentaban opacidades demarcadas asociadas a dolor provocado. El tratamiento se enfocó en educar a la familia con respecto a la HMI, orientar el comportamiento, controlar la sintomatología y restaurar la función y estética de los dientes afectados por la HMI. Debido a la extensión, severidad y localización de los defectos en los dientes 16, 36 y 46, se optó por realizar restauraciones indirectas con resina compuesta. Luego de 12 meses la paciente presentaba comportamiento definitivamente positivo, no relataba sintomatología dolorosa, las restauraciones estaban sin cambio de color, bien adaptadas, con buena salud gingival y con adecuada anatomía oclusal, lisas y sin signos de lesiones de caries dental. Conclusión: En este caso de HMI severa, la restauración con resina indirecta fue una estrategia estética, conservadora, viable y efectiva durante un periodo de seguimiento de 12 meses.
Impact of COVID-19 on Mental Health Among Healthcare Workers in India: A Mixed-methods Systematic Review
Authors: Mathias Edlin Glane , Anupama D. S. , Phagdol Tenzin , Nayak Baby S. , Nagaraja Ravishankar , Dickson Kelly , Bangpan Mukdarut , Lakshmanan Gopichandran , D’Souza Preethy
Published: May 2023

Healthcare workers (HCWs) experienced significant mental health challenges during the COVID-19 pandemic. This review aimed to comprehensively assess the impact of the COVID-19 pandemic on the mental health of HCWs in India. We conducted a mixed-methods systematic review, which adopts a results-based convergent approach that incorporates quantitative and qualitative data. A comprehensive literature search was conducted in relevant databases: PubMed-Medline, CINAHL, Web of Science, and ProQuest. All available full-text studies in the English language that assessed the mental health outcomes (anxiety, stress, and depression) of HCWs during the pandemic and published until 28 February 2022 were included. A total of 31 studies were included in this review (27 quantitative studies, three qualitative studies, and one mixed-method study). The pooled prevalence of depression, anxiety, and stress among HCWs in India was 32.96%, 29.49%, and 33.47%, respectively. Integration of quantitative and qualitative findings using social determinants of health framework resulted in various contributing factors and coping strategies. There is a need for a supportive work environment, mental health support, and mental health policies for HCWs in India.
Análise de Discurso Crítica como instrumental teórico e metodológico para a garantia semântica em Linguagens Documentárias
Authors: Chagas Leonardo Borges Rodrigues , Paula Lorena Tavares de
Published: May 2023

Objetivo: Apresentar o potencial teórico-metodológico da Análise de Discurso Crítica (ADC) para os estudos críticos de Linguagens Documentárias (LD). Parte dos pressupostos da ADC de Norman Fairclough, bem como do princípio de garantia semântica para discutir a representação temática/discursiva de atores sociais. Recorre-se aos conceitos de “discurso”, “prática social”, “prática discursiva”, “texto”, “poder”, “hegemonia”, “ideologia” e “garantia semântica” para propor o modelo tridimensional de análise, no qual a LD seria analisada em três dimensões: LD enquanto texto, LD enquanto prática discursiva e LD enquanto prática social.
Método: Utiliza os métodos de pesquisa exploratória e bibliográfica, com abordagem qualitativa.
Resultado: Os resultados apontam que a abordagem Dialético-Relacional de Fairclough fornece conceitos, ferramentas e categorias necessárias para trabalhar questões sociodiscursivas envolvendo o uso da linguagem na representação de conteúdos documentais, principalmente conteúdos que envolvem grupos sociais minorizados, tais como negros, indígenas, mulheres, LGBTQIA+, dentre outros grupos sociais em situações de vulnerabilidades.
Conclusões: Conclui-se que a abordagem de Fairclough com a utilização de categorias orientadas para os sentidos das palavras podem ser operacionalizadas para entender de que modo atores sociais estão sendo representados nos discursos das LD e de que forma se dá o padrão de inclusão e exclusão desses atores no processo de representação temática dos documentos.
La legibilidad de los informes de aseguramiento: efecto de los mecanismos de control interno
Authors: Martínez-Ferrero Jennifer , Guidi Michele , García-Meca Emma
Published: May 2023

El objetivo de este estudio es analizar cuáles son los mecanismos de control internos vinculados al consejo de administración que actúan como refuerzo de la legibilidad de los informes de aseguramiento. Para testar dicho objetivo, se propone un modelo de regresión para datos de panel en una muestra final de 183 observaciones de empresas internacionales localizadas en 16 países. Los resultados obtenidos ponen de manifiesto un efecto diferente del consejo en la legibilidad y comprensión de los informes en función del mecanismo analizado. Así, mientras la diversidad de género en el consejo de administración y la existencia de un comité especializado de sostenibilidad consiguen reforzar la legibilidad y la comprensión de los informes de aseguramiento, un tamaño excesivo del consejo parece actuar en contra de informes claros y precisos y favorecer la complejidad lingüística.
Motivating factors that lead to consumption of Nigerian movies
Authors: Mwanthi Shadrach Moki
Published: May 2023

This study sought to explore the motivating factors that lead to the consumption of Nigerian Movies, Nollywood. The researcher collected data by interviewing residents of the Shauri Moyo estate using a self-administered questionnaire and a focused group discussion using the FGD interview schedule. Key informants' interviews were also conducted with program production managers from Citizen TV. The Kenyan audience used uses and gratifications theory to analyse different motivations for watching Nigerian movies. The study revealed that Nigerian movies have audiences of all people of all ages, gender, levels of education and living standards of people. It was established that 40 per cent of the respondents were motivated by the entertainment aspect of Nigerian movies, 25 per cent watch them because they are educative, 20 per cent watch because they project African culture such as attire and the foods, 10 per cent confessed that they watched Nigerian movies because they idolise the Nigerian movie actors and actresses. Lastly, 5 per cent watched Nigerian movies for reasons like the accent. In conclusion, this study indicated that Television channels in Kenya air Nigerian movies to entertain their audiences educate them and, at the same time, transmit African culture. This study recommends that, by all means, the Nigerian industry is not perfect. However, it is part of development, so in future, the audience themselves should have some kind of consumer association to be in a position to demand better quality and standard movies.
Enhancing Rotor Angle Stability of Synchronous Generators Using Neuro-Fuzzy Excitation Control Model
Authors: O.N Asanya. , I.U. Uju. , Abonyi S.E. , G.O Ozor.
Published: May 2023

This paper proposes a neuro-fuzzy excitation control model to enhance the rotor angle stability of synchronous generators. The proposed model combines the advantages of both neural networks and fuzzy logic control to improve the performance of the excitation system. The proposed model is designed to regulate the excitation system to generate the required reactive power and maintain the synchronous operation of the generator. The proposed model is tested on a single-machine infinite-bus power system, and the results are compared with a conventional proportional-integral (PI) controller. The simulation results demonstrate that the neuro-fuzzy excitation control model provides better performance than the PI controller in terms of transient stability, damping oscillations, and response to disturbances. The proposed model also shows robustness against changes in system parameters and different operating conditions. The results of this study suggest that the neuro-fuzzy excitation control model can be a suitable alternative to conventional PI controllers in enhancing the rotor angle stability of synchronous generators.
NATURAL GAS ENERGY CONSUMPTION-WEALTH NEXUS: UNVEILING A NON-QUANTITATIVE WELFARE MEASURE
Authors: Bernhard O. ISHIORO, Ph.D
Published: May 2023

This paper examined the type of relationship existing between wealth accumulation ( and /or human development), and natural gas energy consumption (NGC) in Nigeria using the Human Development Index (HDI1 and HDI2) as proxies for human development and wealth accumulation. We employed the theoretical pedestal of  natural gas energy consumption-growth nexus in our empirical review, and econometric model specification, and in  evaluating the resultant estimates of this relationship. Annual time series data for the selected indicators were extracted for several years. Our results indicated that  in the long-run, natural gas energy consumption does not facilitate human development and wealth accumulation vice versa in Nigeria. Furthermore, our results suggest that natural gas energy is consumed or utilized in Nigeria for non-wealth accumulation and non-human development purposes. We recommend that gas energy should be consumed and/or redirected to a more purposeful wealth and human development facilitating consumption.

Keywords: Natural Gas Energy, Growth, Nigeria, ARDL Bounds Tests.

JEL Classification Code:C50,Q32,Q400,Q430
Implementasi Literasi Digital Pada Pembelajaran Maharah Qira’ah Al-Mutawassithah
Authors: Ajeng Rahmawati Rima
Published: May 2023

Tantangan pembelajaran maharah al qira’ah dalam era literasi digital diantaranya pembelajaran masih berfokus pada modul pembelajaran hal ini mengakibatkan beberapa mahasiswa mengalami kesulitan dalam membaca teks Arab yang berkaitan dengan pendidikan karena banyak istilah-istilah kontemporer yang jarang digunakan dan ditemui dalam kehidupan sehari-hari. Peneliti menggunakan pendekatan kualitatif dengan metode deskriptif-analitis. Adapun tujuan peneliti menggunakan pendekatan kualitatif pada penelitian ini adalah untuk menelaah dan mengetahui bagaimana implementasi literasi digital dalam pembelajaran Maharatul Qira’ah al-Mutawassithah. Teknik pengumpulan data yang digunakan adalah wawancara, observasi dan dokumentasi. Untuk mengecek keabsahan data dalam penelitian ini dilakukan melalui triangulasi. Dalam penelitian ini teknik triangulasi yang digunakan adalah triangulasi sumber data atau triangulasi informan. Hasil penelitian ini meyatakan bahwa Implementasi literasi digital dalam pembelajaran Maharatul Qira’ah pada mahasiswa semester II kelas Intensif prodi pendidikan Bahasa Arab STIT Darul Fattah Bandar Lampung adalah menggunakan beberapa platform dan juga aplikasi yang dapat diakses melalui gadget maupun PC. Media untuk mengakses literasi digital tersebut diantaranya : whatsapp, google meet, google scholar dan google form. Dengan penggunaan media pembelajaran berbasis komputer dan internet dapat mencapai target pembelajaran dan meningkatkan motivasi mahasiswa. Selain itu penggunaan gawai sangat membantu mahasiswa dalam pencarian sumber belajar dari internet dengan mudah, ekonomis dan tidak terbatas dengan Brainly, wikipedia dan google scholar.

Kata Kunci: Implementasi, Literasi Digital, Maharatul Qira’ah
Moderasi Beragama Santri Melalui Kurikulum Pondok Pesantren Al-Firdaus Kemiling Bandar Lampung
Authors: Khoiri Akhmad , Munawaroh
Published: May 2023

Facing this increasingly sophisticated global challenge, Muslims are underdeveloped in various sectors, including in the education sector. In addition, it also has the potential to secretly enter radical ideas into the world of Islamic education in pesantren. Pesantren is a traditional Islamic educational institution that is proven to be able to integrate with local culture, so that with pesantren as an institution of Islam which is the religion of rahmatan lil ‘alamin, it is important if religious moderation is included in the pesantren curriculum. This article focuses on two things discussed, namely the curriculum system and the values applied by the Al-Firdaus Kemiling Islamic boarding school in increasing understanding of religious moderation. The purpose of this study is to find out how to derive religion from the curriculum of the Al-Firdaus Kemiling Islamic boarding school. This research method uses a qualitative approach with case studies. This research data was taken through interviews, observations and documentation techniques. The results of this study show that pon pes Al-Firdaus has an integrated curriculum system through four patterns, namely parenting patterns, teaching patterns, santrian patterns, and SIT (Integrated Islamic School) distinctiveness patterns. The values applied by ponpes Al-Firdaus kemiling in increasing the understanding of religious moderation are the value of correct aqeedah, the value of akhlakul karimah, the value of cultural arts and the value of curriculum integration. Through the patterns and values applied, the character of moderate students who are dignified, fair, charismatic, and make Islam a religion of rahmatan lil ‘Alamin.

Keywords: Ponpes Al-Firdaus, Moderation, Curriculum
BREAST CANCER IN PAKISTAN - AN UPDATED OVERVIEW
Authors: Ghazala Rubi  , Maria Amir  , Naeem Ashraf  , Amir Bashir  , Hina Andaleeb
Published: May 2023

Breast cancer is a leading cause of mortality in Pakistan due to cancer in females. Breast cancer has subtypes that inflict differently and owe to various factors that include our lifestyle and genetics. Pakistan has enhanced percentage in developing breast cancer in fourth decade of life in women. Numerous genomics and proteomics studies are being conducted in Pakistan for prognosis, diagnosis and treatment of breast cancer. This review focuses on the mutations in BRCA1/2 genes and other such genomic biomarkers. Moreover, this review emphasizes the advancements made in Pakistan for proteomic and metabolomics diagnosis of carcinoma.
PENGARUH DIGITAL MARKETING, CUSTOMER RELATIONSHIP MANAGEMENT, DAN KUALITAS PELAYANAN TERHADAP KEPUASAN PELANGGAN KENTUCKY FRIED CHICKEN (KFC) KOTA PROBOLINGGO
Authors: Cornellya Vonny Wahyu , Hudzafidah Khusnik , Haidiputri Trivosa Aprilia Novadiani
Published: May 2023

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh Digital marketing, Customer Relationship Management, dan Kualitas Pelayanan terhadap Kepuasan Pelanggan Kentucky Fried Chicken (KFC) Kota Probolinggo baik secara parsial dan simultan, serta untuk mengetahui pengaruh paling dominan dari Digital marketing, Customer Relationship Management, dan Kualitas Pelayanan terhadap Kepuasan Pelanggan Kentucky Fried Chicken (KFC) Kota Probolinggo. Jenis penelitian yang digunakan adalah penelitian kuantitatif, dengan variabel bebas yang digunakan adalah Digital marketing, Customer Relationship Management, dan Kualitas Pelayanan. Sedangkan variabel terikat yang digunakan dalam penelitian ini adalah Kepuasan Pelanggan. Sampel dalam penelitian ini adalah sebanyak 85 pelanggan dari jumlah populasi 485. Pengambilan sampel dilakukan dengan metode purosive sampling. Hasil penelitian, menunjukkan, uji hipotesis (Uji-t) yang telah dilakukan dapat disimpulkan bahwa : 1) Digital marketing berpengaruh positif terhadap kepuasan pelanggan. 2) Customer Relationship Management berpengaruh positif terhadap kepuasan pelanggan. 3) Kualitas Pelayanan berpengaruh positif terhadap kepuasan pelanggan.
SÍNDROME DA ALIENAÇÃO PARENTAL: QUAIS OS SEUS EFEITOS E COMO COMBATER
Authors: Ferreira Amanda de Matos , Bittencourt Neto Antonio de Lucena
Published: May 2023

O presente artigo trata acerca da síndrome de alienação parental, termo que designa a situação em que a criança ou adolescente é induzido, mediante diferentes formas e estratégias de atuação, a destruir seus vínculos com um dos genitores. Em agosto de 2010, foi sancionada no Brasil a Lei nº 12.318, que dispõe sobre o assunto, em prol da necessidade de preservar os direitos básicos e fundamentais da criança e do adolescente. O principal objetivo de lei é controlar com eficácia a boa convivência com ambos dos genitores e os filhos, estabelecendo assim, critérios acerca dos direitos dos pais e das crianças/adolescentes. O objetivo deste trabalho foi estudar um fenômeno que existe na sociedade atual e está cada vez mais presente nas famílias brasileiras. Porque o fenômeno em si surge principalmente devido ao divórcio ou separação difícil. A lei 13.058 de 2014 consagrou a guarda compartilhada, que privilegia o compartilhamento do tempo de convivência com os filhos, devendo os genitores dividirem a forma de criação e educação da criança de modo que a educação passe pelos cuidados de ambos. Havendo indícios de práticas alienadoras, é cabível a instauração de procedimento próprio. Sendo assim, existem diversas medidas para amenizar o impacto de possíveis situações ocasionadas por tal comportamento.
Snowpack nitrate photolysis drives the summertime atmospheric nitrous acid (HONO) budget in coastal Antarctica
Authors: Bond Amelia M. H. , Frey Markus M. , Kaiser Jan , Kleffmann Jörg , Jones Anna E. , Squires Freya A.
Published: May 2023

Abstract. Measurements of atmospheric nitrous acid (HONO) amount fraction and flux density above snow were carried out using a long-path absorption photometer at Halley station in coastal Antarctica between 22 January and 3 February 2022.
The mean ±1σ HONO amount fraction was (2.1 ± 1.5) pmol mol−1 and showed a diurnal cycle (range of 1.0–3.2 pmol mol−1) with a maximum at solar noon. These HONO amount fractions are generally lower than have been observed at other Antarctic locations.
The flux density of HONO from the snow, measured between 31 January and 1 February 2022, was between 0.5 and 3.4×1012 m-2s-1 and showed a decrease during the night.
The measured flux density is close to the calculated HONO production rate from
photolysis of nitrate present in the snow.
A simple box model of HONO sources and sinks showed that the flux of HONO from the snow
makes a >10 times larger contribution to the HONO budget than its formation through the reaction of OH and NO.
Ratios of these HONO amount fractions to NOx measurements made in summer 2005 are
low (0.15–0.35), which we take as an indication of our measurements being comparatively free from interferences.
Further calculations suggest that HONO photolysis could produce up to 12 pmolmol-1h-1 of OH, approximately half that produced by ozone photolysis, which highlights the importance of HONO snow emissions as an OH source in the atmospheric boundary layer above Antarctic snowpacks.
The past is the key to the future – considering Pleistocene subglacial erosion for the minimum depth of a radioactive waste repository
Authors: Breuer Sonja , Bebiolka Anke , Noack Vera , Lang Jörg
Published: May 2023

Abstract. Erosion during potential future glaciations, especially
the incision of deep tunnel valleys, is a major challenge for the long-term
safety of a radioactive waste repository. Tunnel valleys are a common
feature of formerly glaciated sedimentary basins and were incised by
pressurised subglacial meltwater. Besides glaciological conditions,
tunnel-valley formation depends strongly on the erodibility and hydraulic
conductivity of the substratum. In northern Germany, tunnel valleys formed
during the Pleistocene glaciations are widespread and may attain depths of
almost 600 m. The Pleistocene record may provide an indication for the
potential regional distribution and maximum depth of future glaciogenic
erosion. We present a new overview map of the maximum depth of Pleistocene
erosion in northern Germany. Depth zones were extracted from the existing
data and maps provided by the state geological surveys. Based on the mapped
depth zones, the potential for future tunnel-valley formation can be
assessed. The map may serve as a base to define a spatially variable
additional depth that should be added to the minimum depth of a repository
required by legislation.
Framing REDD+: political ecology, actor–network theory (ANT), and the making of forest carbon markets
Authors: Schumacher Juliane Miriam
Published: May 2023

Abstract. This paper discusses the opportunities and challenges of integrating science and technology studies (STS), especially the variant based on actor–network theory (ANT), into fields of human geography with a critical research tradition. Drawing on the experiences of political ecology and empirical research on carbon markets, it uses the example of reducing emissions from deforestation and forest degradation (REDD+) to show how the turn towards such STS impacts has changed the “framing” of REDD+: from analysing REDD+ as an example of the “neoliberalization of nature” and a focus on the impacts on human forest users to detailed accounts of infrastructures and practices of making markets. Discussing the consequences of these observations and different proposals brought forward to combine ANT with political ecology, the paper argues for a conscious and reflective use of ANT-inspired STS approaches to benefit from the additional insights this approach allows while keeping the critical potential of geography alive.
Long-term evaluation of surface air pollution in CAMSRA and MERRA-2 global reanalyses over Europe (2003–2020)
Authors: Lacima Aleksander , Petetin Hervé , Soret Albert , Bowdalo Dene , Jorba Oriol , Chen Zhaoyue , Méndez Turrubiates Raúl F. , Achebak Hicham , Ballester Joan , Pérez García-Pando Carlos
Published: May 2023

Abstract. Over the last century, our societies have experienced a sharp increase in urban population and fossil-fuelled transportation, turning air pollution into a critical issue. It is therefore key to accurately characterize the spatiotemporal variability of surface air pollution in order to understand its effects upon the environment, knowledge that can then be used to design effective pollution reduction policies. Global atmospheric composition reanalyses offer great capabilities towards this characterization through assimilation of satellite measurements. However, they generally do not integrate surface measurements and thus remain affected by significant biases at ground level. In this study, we thoroughly evaluate two global atmospheric composition reanalyses, the Copernicus Atmosphere Monitoring Service (CAMSRA) and the Modern-Era Retrospective Analysis for Research and Applications v2 (MERRA-2), between 2003 and 2020, against independent surface measurements of O3, NO2, CO, SO2 and particulate matter (PM; both PM10 and PM2.5) over the European continent. Overall, both reanalyses present significant and persistent biases for almost all examined pollutants.
CAMSRA clearly outperforms MERRA-2 in capturing the spatiotemporal variability of most pollutants, as shown by generally lower biases (all pollutants except for PM2.5), lower errors (all pollutants) and higher correlations (all pollutants except SO2). CAMSRA also outperforms MERRA-2 in capturing the annual trends found in all pollutants (except for SO2). Overall, CAMSRA tends to perform best for O3 and CO, followed by NO2 and PM10, while poorer results are typically found for SO2 and PM2.5. Higher correlations are generally found in autumn and/or winter for reactive gases. Compared to MERRA-2, CAMSRA assimilates a wider range of satellite products which, while enhancing the performance of the reanalysis in the troposphere (as shown by other studies), has a limited impact on the surface. The biases found in both reanalyses are likely explained by a combination of factors, including errors in emission inventories and/or sinks, a lack of surface data assimilation, and their relatively coarse resolution. Our results highlight the current limitations of reanalyses to represent surface pollution, which limits their applicability for health and environmental impact studies. When applied to reanalysis data, bias-correction methodologies based on surface observations should help to constrain the spatiotemporal variability of surface pollution and its associated impacts.
Study on the vibration control method of a turboshaft engine rotor based on piezoelectric squeeze film damper oil film clearance
Authors: Lu Qingxiong , Li Chao , Zhang Yangyan , Fang Hao , Bin Guangfu
Published: May 2023

Abstract. In the complex environment of the battlefield and dust weather, hard objects including birds, bullets, sand and others will
inevitably cause impact damage to the compressor blades of turboshaft
engines. The damage will further result in fatigue vibration of the gas
generator rotor and catastrophic accidents such as excessive engine
vibration and even crash. The relation between oil film clearance of dampers and damping of rotor systems as well as the damping and vibration amplitude of
a rotor system are analyzed. The functional relation between oil film
clearance and vibration amplitude is derived. Taking the gas generator rotor
of a certain turboshaft engine as an example, the rotor dynamic model of a gas generator rotor with oil film bearing clearance is constructed, and the
vibration response of the rotor system under different oil film clearances
is analyzed. A new type of squeeze film damper (SFD) structure with
piezoelectric-driven split pads is innovatively designed, and the vibration control system of the gas generator rotor is built. In addition, experimental research on rotor fault vibration control under different oil
film clearances is carried out. The results show that, within a certain range, when oil film clearance decreases, amplitude will decrease. Under the
experimental conditions, when the driving voltage of the piezoelectric
actuator is adjusted from 0 to 70 V, the oil film clearance decreases from
156 to 118 µm. Then, the vibration amplitude decreases and
gradually reaches stability after 0.036 s, and the vibration amplitude of
the rotor system decreases by 12 %. When the driving voltage of the
piezoelectric actuator is adjusted to 150 V, the oil film clearance
decreases to 76 µm, and the vibration amplitude of the rotor system
decreases by 28 %. When the new SFD adopts a piezoelectric-driven split-pad structure, the structure can adjust quickly the oil film clearance
online so as to control the vibration of the rotor system. The research results can provide a technical reference for the vibration control of turboshaft
engine rotor systems.
Spatial characteristics of frazil streaks in the Terra Nova Bay Polynya from high-resolution visible satellite imagery
Authors: Bradtke Katarzyna , Herman Agnieszka
Published: May 2023

Abstract. Coastal polynyas around the Antarctic continent are
regions of very strong ocean–atmosphere heat and moisture exchange that are
important for local and regional weather, sea ice production, and water mass
formation. Due to extreme atmospheric conditions (very strong offshore
winds, low air temperature, as well as humidity) the surface ocean layer in
polynyas is highly turbulent, with mixing due to combined Langmuir,
wind-induced, and buoyancy-driven turbulence. One of the visible signs of
complex interactions between the mixed-layer dynamics and the forming sea
ice are frazil streaks, elongated patches of high ice concentration
separated by areas of open water. In spite of their ubiquity, observational
and modelling analyses of frazil streaks have been very limited largely due
to the fact that their significance for heat flux and ice production is only
just becoming apparent. In this study, the first comprehensive analysis of
the spatial variability of surface frazil concentration is performed for the
Terra Nova Bay Polynya (TNBP). Frazil streaks are identified in
high-resolution (pixel size 10–15 m) visible satellite imagery, and their
properties (surface area, width, spacing, and orientation) are linked to the
meteorological forcing (wind speed and air temperature). This provides a
simple statistical tool for estimating the extent and ice coverage of the
region of high ice production under given meteorological conditions. It is
also shown that the orientation of narrow streaks tends to agree with the
wind direction, suggesting the dominating role of the local wind forcing in
their formation. Very wide streaks, in turn, deviate from that pattern, as
they are presumably influenced by several additional factors, including
local water circulation and the associated convergence zones. An analysis of
peak wavelengths and directions determined from the images, compared to
analogous open-water wavelengths computed with a spectral wave model,
demonstrates a significant slow-down in the observed wave growth in TNBP.
This suggests an important role of frazil streaks in modifying wind-wave
growth and/or dissipation in polynyas.
Gaussian mixture models for the optimal sparse sampling of offshore wind resource
Authors: Marcille Robin , Thiébaut Maxime , Tandeo Pierre , Filipot Jean-François
Published: May 2023

Abstract. Wind resource assessment is a crucial step for the development of offshore wind energy. It relies on the installation of measurement devices, whose placement is an open challenge for developers. Indeed, the optimal sensor placement for field reconstruction is an open challenge in the field of sparse sampling. As for the application to offshore wind field reconstruction, no similar study was found, and standard strategies are based on semi-empirical choices. In this paper, a sparse sampling method using a Gaussian mixture model on numerical weather prediction data is developed for offshore wind reconstruction. It is applied to France's main offshore wind energy development areas: Normandy, southern Brittany and the Mediterranean Sea. The study is based on 3 years of Météo-France AROME's data, available through the MeteoNet data set. Using a Gaussian mixture model for data clustering, it leads to optimal sensor locations with regards to wind field reconstruction error. The proposed workflow is described and compared to state-of-the-art methods for sparse sampling. It constitutes a robust yet simple method for the definition of optimal sensor siting for offshore wind field reconstruction. The described method applied to the study area output sensor arrays of respectively seven, four and four sensors for Normandy, southern Brittany and the Mediterranean Sea. Those sensor arrays perform approximately 20 % better than the median Monte Carlo case and more than 30 % better than state-of-the-art methods with regards to wind field reconstruction error.
Zine Pedagogies: Students as Critical Makers
Authors: Scheper Jeanne
Published: May 2023

In this essay, I talk about what zines are, why zine-making fosters an “ethos” which is a particularly good fit for the feminist critical cultural studies classroom, and how I utilize zines in gender and sexuality studies in order to teach about the value and existence of community archiving practices and queer history-making. I share both the theoretical underpinnings of this pedagogical work, as well as the practical “how-tos” of teaching with zines, including the application of five key principles to scaffolding learning and developing the analytic tools of cultural critique through the zine project assignment.
Attention management to improve fallback-readiness in conditional automated vehicles
Authors:   , Gerber Michael Andreas
Published: May 2023

This work explores the management of driver attention in Conditional Automated Driving (CAD) to improve situation awareness for safer control transitions. The research develops an attention management system that facilitates interleaved transitions between non-driving-related activities and vehicle supervision. The system is based on the encoded information of automation reliability to indicate the likelihood of an upcoming transition. The research addresses three research questions and presents a tool to prototype and evaluate the impacts of interfaces. The findings suggest that managed interruptions initiate a phase of interleaved attention, hinting towards improved situation awareness, and may benefit safety without negatively impacting usability.
Effect of Polarized Training on Cardiorespiratory Fitness of Untrained Healthy Young Adults: A Randomized Control Trial with Equal Training Impulse
Authors: Chiang Tsung-Lin , Chen Chu , Lin Yu-Chin , Chan Shih-Hsuan , Wu Huey-June
Published: May 2023

To explore the effects of 8-week polarized training (POL), high-intensity interval training (HIIT), and threshold training (THR) interventions on the cardiorespiratory fitness (CRF) of untrained healthy young adults. This study recruited 36 young adults and randomly assigned them to POL, HIIT, THR, or control (CG) groups to undergo an 8-week training intervention. The training impulse applied to all three intervention groups was identical. The training intensity was divided into Zone 1, 2, and 3 (Z1, Z2 and Z3) on the basis of the ventilatory thresholds (VT). The weekly training intensity distribution for POL was 75% of Z1 and 25% of Z3; HIIT was 100% of Z3 and THR was 50% of Z1 and 50% of Z2. Each group underwent Bruce protocol testing and supramaximal testing before, during, and after the intervention; relevant CRF parameters were assessed. 8 weeks of POL and HIIT significantly increased VT2 (p < 0.05); 8 weeks of POL, HIIT, THR and significantly increased VO2max and TTE (p < 0.05). The effect size of POL in relation to VO2max and TTE improvements was greater than that of HIIT and THR (g = 2.67 vs. 1.26 and 1.49; g = 2.75 vs. 2.05 and 1.60). Aerobic training models with different intensity distributions have different time effects on improving CRF. Relative to HIIT and THR, POL improved more variables of CRF. Therefore, POL is a feasible aerobic training method for improving CRF.
Acute Effects of Complex Conditioning Activities on Athletic Performance and Achilles Tendon Stiffness in Male Basketball Players
Authors: Papla Monika , Ewertowska Paulina , Krzysztofik Michał
Published: May 2023

The goal of this study was to compare the effects of a bilateral conditioning activity consisting of back squats and drop jumps with a unilateral one consisting of split squats and depth jumps to lateral hop over sequentially performed countermovement jump (CMJ), modified t-agility test (MAT), and Achilles tendon stiffness. Twenty-six basketball players participated in this study and were randomly and equally assigned to one of two different test groups: bilateral (B - CA) or unilateral (U - CA) conditioning activity group. The B - CA group completed 2 sets of 4 repetitions of back squats at 80% of one-repetition maximum (1RM), then 10 drop jumps, while the U - CA group performed 2 sets of 2 repetitions of split squats on each leg at 80%1RM, followed by 5 depth jumps to lateral hop on each leg as conditioning activity (CA) complexes. After a warm-up and 5 min before the CA the baseline Achilles tendon stiffness, CMJ, and MAT time measurement were performed. In the 6th min after the CA, all tests were re-tested in the same order. The two-way repeated measures mixed ANOVAs revealed that both B - CA and U - CA failed to produce significant improvements in CMJ and MAT performance. In addition, a significant increase in Achilles stiffness was demonstrated with both protocols (a main effect of time: p = 0.017; effect size = 0.47; medium). This study revealed that combining back squats and drop jumps, as well as split squats and depth jumps to a lateral hop, had no effect on subsequent CMJ and MAT performance in basketball players. Based on these results, it can be assumed that combinations of exercises, even if they have similar movement patterns, may cause excessive fatigue, resulting in no PAPE effect.
Indígenas urbanos en la América Hispana (siglos XVII-XVIII)
Authors: Ciriza-Mendívil Carlos D.
Published: May 2023

Indígenas urbanos en la América Hispana (siglos XVII-XVIII)
El congreso de Chuquisaca de 1837 y las costuras del proceso de construcción del Estado en Bolivia
Authors: Colàs Pol
Published: May 2023

La construcción del Estado latinoamericano después de las independencias vivió momentos de tensión evidentes repartidos por la totalidad de la geografía regional. Sucesos que, a través de su estudio pormenorizado, permiten conocer con detalle la notable cantidad de actores, intereses, consensos y luchas intestinas que constituyeron el motor de la estatalización, dejando atrás concepciones historiográficas que dan una primacía exclusiva al ejecutivo o a decisiones “caudillistas” en el poder. Enfocando la mirada hacia la colección de correspondencia del presidente boliviano Andrés de Santa Cruz, el estudio se centra en el análisis del congreso de Chuquisaca de 1837, donde se postula una alianza entre la ciudadanía, la localidad y el poder legislativo para la potenciación de un proyecto nacional puramente boliviano, contrario al ejecutivo, con intereses en La Paz, que pretendía consolidar la expansionista Confederación Perú-Boliviana. Pacto que acabó por iniciar un ciclo revolucionario de oposición pública contra el gobierno alrededor de la capital boliviana, el cual, con altibajos, acabó por imponerse en 1839, provocando el final de la aventura confederada y de la administración crucista. Con ello, el artículo pretende captar la profundidad de las disputas por el control del poder entre legislativo y ejecutivo, el peso de la localidad y de los movimientos autónomos de la ciudadanía en la lucha por la hegemonía, así como la dirección que esta pugna hizo tomar al proceso de construcción del Estado que la cubrió. Todo ello, en innegable relación con el resto de América Latina, siendo así un suceso local que, considero, puede dar elementos para el análisis del proceso general, proponiendo comparativas con casos análogos en la región.
The influence of oxygen enrichment of combustion air on the resistance of the lining of hot-blast stoves
Authors:   Ukrainian State University of Science and Technologies, Gres L. P. , Yeromin O. O. ,   Ukrainian State University of Science and Technologies, Gupalo O. V. ,   Ukrainian State University of Science and Technologies
Published: May 2023

The article is devoted to the problem of increasing the efficiency of blast furnace equipment. Currently, blast furnace gas does not provide the specified technological temperatures of high-temperature heat units (blast blast furnaces, heating furnaces, etc.), since its heat of combustion is insignificant (3200-3500 kJ/m3). In the work, a calculation and comparative analysis of two methods of increasing the combustion temperature is performed: enriching the blast furnace gas with natural gas (basic version) and enriching the combustion air with oxygen for the conditions of blast furnace air heaters with a temperature under the dome of 1300 and 1350 °C. It is shown that to ensure these temperatures, it is necessary to enrich blast furnace gas with a calorific value of 3228 kJ/m3 with natural gas (4.0 and 5.37%, respectively) or to enrich the combustion air with oxygen (29.4% and 32.3%, respectively). At the same time, it is necessary to have a reserve in the presence of a sufficient amount of technological oxygen. When enriching the combustion air with oxygen, the specific yield of combustion products decreases, and to maintain the same parameters of heat exchange in the nozzle of air heaters, it is necessary to significantly increase the consumption of blast furnace gas. At the same time, the total consumption of combustion air practically does not change. Calculations of the length of the torch, temperature distribution, and actual and permissible loads along the height of the combustion chamber of blast furnace air heaters were performed while maintaining a temperature under the dome of 1350 °С due to enrichment of blast furnace gas with natural gas (basic version) and enrichment of combustion air with technological oxygen. It is shown that when heating air heaters using oxygen, the length of the torch decreases and the temperature maximum shifts to the lower zone, where the static load on the refractory brick is greater. But at the same time, the permissible loads are greater than the actual loads, and thus the stability of the combustion chamber masonry will be ensured. With the current scarcity and cost of natural gas, its use is irrational. Heating the combustion components requires significant capital expenditures for the construction of a complex of heat exchangers. In some cases, there are no areas for placement of heat exchangers on existing thermal units. At the same time, devices for using oxygen are simple and cheap.