bluuebunny/crossref_metadata_2025 huggingface dataset:
La calidad de la escuela en discusión: implementación tecnológica y escolarización inclusiva, dos caras de la misma moneda
Authors: Kerexeta Brazal Itziar , Darretxe Urrutxi Leire
Published: December 2023

Hoy en día la Inclusión Educativa (IE) es un reto de la educación mundial ligado a la implementación tecnológica en las escuelas, donde las competencias digitales docentes (CDD) juegan un papel clave, procurando una disminución de la brecha digital (Chávez & Rodríguez, 2020). En el estudio que se presenta se han analizado estos conceptos mediante grupos focales de profesorado en activo de Latinoamérica y Euskadi (España), resultando la tecnología un aliado para la inclusión educativa, y entendiendo que ambas contribuyen a la calidad de la escuela. Las actitudes y capacidades docentes, junto con las políticas e inversiones de recursos, son aspectos de especial relevancia.
EstraNet: An Efficient Shift-Invariant Transformer Network for Side-Channel Analysis
Authors: Hajra Suvadeep , Chowdhury Siddhartha , Mukhopadhyay Debdeep
Published: December 2023

Deep Learning (DL) based Side-Channel Analysis (SCA) has been extremely popular recently. DL-based SCA can easily break implementations protected by masking countermeasures. DL-based SCA has also been highly successful against implementations protected by various trace desynchronization-based countermeasures like random delay, clock jitter and shuffling. Over the years, many DL models have been explored to perform SCA. Recently, Transformer Network (TN) based model has also been introduced for SCA. Though the previously introduced TN-based model is successful against implementations jointly protected by masking and random delay countermeasures, it is not scalable to long traces (having a length greater than a few thousand) due to its quadratic time and memory complexity. This work proposes a novel shift-invariant TN-based model with linear time and memory complexity. he contributions of the work are two-fold. First, we introduce a novel TN-based model called EstraNet for SCA. EstraNet has linear time and memory complexity in trace length, significantly improving over the previously proposed TN-based model’s quadratic time and memory cost. EstraNet is also shift-invariant, making it highly effective against countermeasures like random delay and clock jitter. Secondly, we evaluated EstraNet on three SCA datasets of masked implementations with random delay and clock jitter effect. Our experimental results show that EstraNet significantly outperforms several benchmark models, demonstrating up to an order of magnitude reduction in the number of attack traces required to reach guessing entropy 1.
ENVIRONMENTAL POLICIES IN SERBIA AND THE VIOLATION OF THE RIGHTS OF THE CHILD
Authors:   Senior Research Fellow, Institute of Criminological and Sociological Research, Batrićević Ana , Stevanović Ivana ,   Senior Research Fellow, Institute of Criminological and Sociological Research
Published: December 2023

Several aspects of the rights of the child depend on environment quality and conservation and the breach of environmental provisions may result in the violation of the rights of the child, either through criminal offences against environment, or through long-term application of environmental policies that are harmful for of the rights of the child or do not take into consideration the needs and best interest of the child. The authors analyse normative framework of the Republic of Serbia, including ratified international conventions as well as national legislative and strategic documents, pertinent to both children’s rights and environmental protection. The authors also analyse the data obtained from relevant reports describing current state of both - environmental and children’s rights protection in Serbia. The authors conclude that the rights of the child are not given enough attention in documents regulating environmental protection and sustainable development in the Republic of Serbia, particularly when it comes to children from marginalized groups living in substandard settlements.
Balancing Teacher–Led And Student–Led Activities When Teaching Foreign Languages to Students at Uzbekistan’s State Conservatory
Authors:   PhD, Associate Professor, State Conservatory of Uzbekistan, Abdullaeva Munavara
Published: December 2023

This paper will look at the issue of implementing new work methods in English classes at the State Conservatory of Uzbekistan. Recently, there has been a lot of debate on whether to switch to a student–centered method or stick with the traditional model, in which the teacher entirely controls the process. There has been the need to employ innovative ways for motivating students and monitoring learning activities in the process of learning foreign languages in the digital educational environment. The paper argues that most students, regardless of their level, prefer cooperative learning and value teacher assistance. The forms of education that students select are determined by their attitude toward the learning process. The combined learning process allows language learners to cooperate with their teacher and fellow students, resulting in changes in the connection between teachers and students in which students’ personal interests and professional aspirations are taken into account. In the case of teaching conservatory students, it was discovered that student–centered training was less beneficial for those of students that just starting to learn English language as well as for the students at an intermediate level, but showed good results for the students approaching a more advanced level of understanding.
Pregnant with Acute Abdomen, an Unexpected Turn: Gallbladder Volvulus Case Report
Authors:   Departamento de Cirugía, Hospital General Regional #1 Vicente Guerrero del Instituto Mexicano del Seguro Social, Acapulco de Juárez, Guerrero, México, Martinez Maya Gabriela , Montaño García Neftalí Elizabeth ,   Departamento de Cirugía, Hospital General Regional #1 Instituto Mexicano del Seguro Social, Tijuana, Baja California, México., Jiménez Alejandra López ,   Departamento de Cirugía, Hospital General Regional #1 Vicente Guerrero del Instituto Mexicano del Seguro Social, Acapulco de Juárez, Guerrero, México, Romero Gerardo Alvarado ,   Departamento de Cirugía, Hospital General Regional #1 Vicente Guerrero del Instituto Mexicano del Seguro Social, Acapulco de Juárez, Guerrero, México, Pastrana Rosas José Manuel ,   Departamento de Cirugía, Hospital General Regional #1 Vicente Guerrero del Instituto Mexicano del Seguro Social, Acapulco de Juárez, Guerrero, México, Barrera Guerra Luis Rodrigo ,   Departamento de Cirugía, Hospital General Regional #1 Vicente Guerrero del Instituto Mexicano del Seguro Social, Acapulco de Juárez, Guerrero, México
Published: December 2023

Gallbladder volvulus, is a rare condition that occurs when the gallbladder twists on its elongated mesentery along the axis of the cystic duct and artery, it occurs in 1 in every 365,000 cases, the mortality of this condition is of 6%. Its clinical presentation is insidious and patients usually go to the emergency department with an acute abdomen. We present the clinical case of a pregnant patient who came with data of acute abdomen, protocolized and operated on by our service with an unexpected outcome: volvulated gallbladder.
TECHNOLOGICAL KNOWLEDGE AND ACCEPTANCE AMONG RURAL PRIMARY SCHOOL IN MALAYSIA
Authors: ABDUL LATEF AZLIN SHARINA , FROHLICH DAVID , CALIC JANKO , MUHAMMAD NUZUL HAQIMI , RADZUAN AINUL WAHIDA
Published: December 2023

The use of mobile technologies appears to be in line with the strategic goals in education besides facilitating and promoting learning anywhere and anytime. However, despite the realization of ubiquitous mobile infrastructures and practices in much of the developed world, a digital divide still exists in developing countries. This paper discusses the knowledge and acceptance of technology among primary school students in rural Malaysia. This study involved two rural primary schools with different sociocultural values; an aboriginal school and a rural Malay school. Questionnaires were distributed among the students to have their insight into technological knowledge and usage. Through the questionnaire, this paper describes the students' behaviour and responses toward digital devices and mobile learning. The different perceptions and acceptance towards technology between the aboriginal and non-aboriginal students are also reviewed in this paper.

 
Penggunaan teknologi mudah alih adalah sejajar dengan sasaran sektor pendidikan di mana ianya menyokong dan menggalakkan pembelajaran berlaku di mana sahaja dan pada bila- bila masa. Namun begitu, ketika kemudahan teknologi mudah alih dan kepesatan infrastruktur telekomunikasi dinikmati oleh negara- negara maju, jurang teknologi masih wujud di negara- negara membangun. Justeru, artikel ini membincangkan tentang pengetahuan dan penerimaan teknologi di kalangan para pelajar sekolah rendah di kawasan luar bandar di Malaysia. Kajian ini melibatkan dua buah sekolah rendah yang mempunyai perbezaan nilai sosiobudaya; sebuah sekolah di perkampungan orang asli dan sebuah sekolah di perkampungan Melayu di luar bandar. Borang soal selidik diedarkan di kalangan para pelajar bagi mendapatkan maklumat berkenaan penggunaan dan pengetahuan teknologi di kalangan mereka. Melalui hasil dapatan daripada soal- selidik tersebut, artikel ini akan menerangkan berkenaan tingkah laku pelajar dan respon mereka terhadap peralatan digital dan pembelajaran mudah alih. Perbezaan persepsi dan penerimaan terhadap teknologi di antara pelajar di kalangan orang asli da sebaliknya juga akan diulas di dalam kajian ini.
ЕҢБЕК МОТИВАЦИЯСЫНЫҢ ҚӘСІПОРЫНДАҒЫ ТИІМДІ БАСҚАРУ ФАКТОРЫ РЕТІНДЕ
Authors: Abuzyarova Zhanna
Published: December 2023

Ұйымды тиімді басқарудың маңызды факторларының бірі жұмыс күшін ынталандыру болып табылады, өйткені ол еңбек өнімділігін арттыруға, жұмысқа қанағаттануды жақсартуға ықпал етеді, сол арқылы кәсіпорынның жалпы табысына ықпал етеді. Мотивацияға ынталандыру, кәсіби өсу мен даму мүмкіндіктерін қамтамасыз ету, жағымды жұмыс ортасын құру, тұрақты кері байланыс және тану сияқты әртүрлі әдістер арқылы қол жеткізуге болады. Қызметкерлер ынталы болған кезде, олар өз жұмысына көбірек тартылады және оларға адал болады, бұл өнімділіктің жақсаруына және жұмысқа қанағаттануының жоғарылауына әкелуі мүмкін. Мотивацияланған қызметкерлер өз ұйымына адал болып қалу ықтималдығы жоғары, бұл қызметкерлердің ауысуын азайтады және ұзақ мерзімді тұрақтылыққа ықпал етеді. Тиімді басқару ұйымның қажеттіліктеріне де, жеке қызметкерлердің қажеттіліктеріне де назар аударуды талап етеді.
Қазіргі әлемде қызметкерлерді кәсіпорындарға тарту мен ұстауға назар аударылып отырғанын ескере отырып, еңбек мотивациясының тақырыбы өте өзекті болып табылады. Үздік жұмыс күші үшін жаһандық бәсекелестік жағдайында ұйымдар өз қызметкерлерін ең жақсы жұмыс істеуге ынталандыру, өнімділікті арттыру және инновацияларды ынталандыру жолдарын табуы керек.
Бұл мақаланың мақсаты тиімді басқару факторы ретінде жұмыс күшінің еңбек мотивациясының процесін Bridge компаниясы мысалында зерттеу болып табылады. Мақаланың аясында еңбекті мотивациясының негізгі принциптері мен әдістері, сондай-ақ олардың қызметкерлердің жұмысына әсері қарастырылады. Зерттеу барысында қарапайым мадақтаудан бастап материалдық марапатқа дейінгі еңбек ынтасының алуан түрлері қарастырылып, олардың артықшылықтары мен кемшіліктері анықталады. Жұмысшылардың мотивациясын зерттеудің ғылыми жаңалығы жұмысшыларды ынталандыру, тарту және еңбек өнімділігі жүйесін жетілдірудің жаңа тәсілдерін зерттеуде жатыр.
Зерттеу нысаны мен тақырыбы әртүрлі аспектілер болып табылады, мысалы: еңбекақы төлеу жүйелері, мотивациялық бағдарламалар мен сыйлықақылар, еңбек жағдайлары мен ұйымдастырылуы, қызметкерлерді оқыту және дамыту және қызметкерлердің мотивациясы мен өнімділігін арттыру үшін қолданылатын әртүрлі әдістер мен тәсілдер. Бұл материалдық және материалдық емес ынталандыруды қамтуы мүмкін. Белгілі бір ұйымда еңбек мотивациясының қай әдістері жақсы жұмыс істейтіні және оларды қалай жақсартуға болатыны туралы толық түсінік алу үшін зерттеу әдістері ретінде сұхбат және Bridge компаниясының деректерін талдау пайдаланылды.
Inyección Epidural de Esteroides a Nivel Cervical: Una Revisión Narrativa
Authors: Molina-Muñiz Héctor G. , Varaldi Giannina , Castromán Pablo
Published: December 2023

El dolor de cuello es la cuarta causa de discapacidad en Estados Unidos. El riesgo durante la vida de desarrollar cervicalgia es casi del 50% en la población general. El dolor radicular cervical tiene una incidencia anual estimada de 1 a 3,5 cada 1000 personas, con un pico entre los 40 y 50 años. El tratamiento multidisciplinario, con una combinación de un esquema farmacológico, fisioterapia, soporte psicológico o psiquiátrico y la inyección epidural de esteroides cervical ha mostrado los mejores resultados.Las inyecciones epidurales cervicales de esteroides pueden realizarse de modo similar que en el resto de la columna por abordaje interlaminar o transforaminal. Sin embargo, la realización de inyecciones epidurales transforaminales cervicales no son las recomendadas por los autores debido a las raras, pero devastadoras complicaciones observadas con este acceso. El abordaje interlaminar es la opción que cuenta con mayor soporte de la evidencia y por tanto es la recomendada en los algoritmos propuestos para este fin.En el presente trabajo, se realiza una revisión narrativa de los aspectos farmacológicos, los accesos utilizados en las inyecciones epidurales cervicales de esteroides y su perfil de complicaciones, así como la monitorización necesaria para brindar seguridad a nuestros pacientes.
COVID-19–related posterior reversible encephalopathy syndrome: insights from a clinical case
Authors: Dehdab Reza , Afat Saif
Published: December 2023

In the present case report, a 50-year-old female presented with hemiparesis and blurred vision and was subsequently diagnosed with posterior reversible encephalopathy syndrome (PRES) associated with coronavirus disease 2019 (COVID-19). Magnetic resonance imaging revealed cortico-subcortical edema with hyperintensities bilaterally in the frontoparietal and bi-occipital regions. Although PRES is a neurotoxic disorder that typically affects white matter of the brain and often is associated with hypertension, renal failure, and autoimmune disorders, recent studies have suggested that COVID-19 increases the risk of PRES. This case report presents a unique instance of COVID-19–related PRES. Unlike most previously reported cases occurring during the acute phase of severe COVID-19, our patient experienced PRES during the recovery phase with mild initial symptoms, such as fatigue and mild fever. The article discusses the pathophysiology of PRES, the potential mechanisms by which COVID-19 leads to PRES, and the treatment and outcome of the patient.
Biodiversity and functional roles of soil organisms: An analysis of millipede populations in Southern Albania
Authors: Kicaj Hajdar , Cobaj Geolind
Published: December 2023

Soil organisms are an important component of the biodiversity of terrestrial biogeocenoses. Their considerable taxonomic and ecological variability determines a significant functional role in soil formation processes, mechanisms of sustainable development and productivity of natural ecosystems. The aim of the study is to develop a practical approach to the ecological assessment of soil organisms populations using the example of Diplopoda in the southern region of Albania. The study was carried out using general scientific methods of cognition: system and cluster analysis, synthesis, specification, abstraction, formalization, deduction, generalization, and the statistical method. The article systematizes and analyses statistical data on the assessment of populations of millipede species found in the study area. It considers the influence of environmental factors on the distribution of representatives of the class Diplopoda. It calculated the frequency of species according to the collection areas, constant values for the species of the three represented orders. Based on the data variety, composition of each zone is carried out with cluster analysis using Average Linkage. The similarity between zones is studied. The dendrogram obtained indicates the proximity of zones according to their diversity composition. Based on the results of the study, a system of tools was proposed as part of the ecological assessment of soil organisms populations, and the main approaches to its implementation were developed. The practical significance of the obtained results lies in the possibility of using them to study the dynamics of soil organism populations, including in the period of global climate change, to develop a dynamic approach to the ecological assessment of soil ecosystems and to implement an appropriate adaptation and regeneration strategy
Developing Secure Messaging Software using Post-Quantum Cryptography
Authors: Nguyen Tat-Thang , Luc Nhu-Quynh , Dao Thanh Toan
Published: December 2023

In this paper, a technique to develop a secure messaging service utilizing a new post-quantum cryptosystem, termed CryptoMess, is proposed. Commutative Supersingular Isogeny Diffie-Hellman (CSIDH) is utilized to secure key exchange paired with the AES algorithm to protect message content in communication. At the same time, the Rainbow post-quantum digital signature technology is incorporated to assure the integrity and authenticity of communications between the sender and the recipient. As a consequence, the messaging program is able to exchange messages between users, assuring safety, security, integrity, and authenticity. The performance of the program has a transmitting rate of approximately 0.26 s and a receiving rate of approximately 0.22 s. The message signing time is approximately 0.027 s, the message verification speed is approximately 0.22 s, and the key exchange time is approximately 0.0017s.
Compliance às boas práticas de governança corporativa e a habilidade gerencial dos gestores
Authors: Silva Leocadia Candido da , Santos Cheila Nunes dos , Mazzioni Sady , Dal Magro Cristian Baú
Published: December 2023

O objetivo do estudo é analisar a influência do compliance às boas práticas de governança corporativa na escolha de gestores com habilidade gerencial. A amostra investigada considerou 498 observações no período de 2015 a 2019, das 100 empresas listadas na B3 como maior liquidez das ações, utilizando-se o método de regressão linear múltipla para análise. Os resultados evidenciam que as empresas com práticas deficientes de governança corporativa e com menor atendimento aos requisitos dos referenciais de boas práticas de governança corporativa atuam com gestores mais habilidosos para compensar a deficiência organizacional. As evidências indicaram que empresas com maior compliance às boas práticas de governança corporativa possuem gestores que não apresentam, necessariamente, maior habilidade gerencial. Os achados indicam que as empresas com compliance às boas práticas de governança corporativa conseguem estabelecer elevados padrões de cultura organizacional, reduzindo a dependência da habilidade gerencial do gestor sobre os resultados da organização.
The Practicum Evaluation Conundrum: Perceptions of Preservice English Language Teachers and Their Mentors
Authors: ÇELİK Servet , ÇELİK Handan , KARACA Bilal
Published: December 2023

The evaluation conundrum during teaching practicum concerning the criteria used and perception of them by faculty mentors, school mentors, and preservice teachers remains a critical concern in language teacher education. This multi-perspective research quantitatively investigates the viewpoints of preservice English teachers and their school and faculty mentors regarding the significance of the evaluation criteria set by the Ministry of National Education for evaluating preservice teachers’ teaching in teaching practicum. While all three groups considered the evaluation criteria to be significant—although at varying degrees—the faculty mentors ascribed greater importance to the evaluation criteria, compared to school mentors and preservice teachers, for both the evaluation criteria used by faculty mentors and school mentors. The study highlights the key role of evaluations and feedback provided by school and faculty mentors during teaching practicum despite higher degrees of significance attached to the evaluation criteria used by school mentors. The implications can inform policy and practice in language teacher education, promoting better outcomes for the preparation of future English language teachers in Türkiye.
How hard do we tap during snow stability tests?
Authors: Toft Håvard Boutera , Verplanck Samuel V. , Landrø Markus
Published: December 2023

Abstract. This study examines the impact force applied from hand taps during Extended Column Tests (ECT), a common method of assessing snow stability. The hand-tap loading method has inconsistencies across the United States, Canadian, and Norwegian written standards, as well as inherent subjectivity. We developed a device, the “tap-o-meter”, to measure the force-time curves during these taps and collected data from 286 practitioners, including avalanche forecasters and mountain guides in Scandinavia, Central Europe, and North America. Peak forces and loading rates are the metrics chosen to quantitatively compare the data. The mean, median, and inner quartile peak forces are distinctly different for each loading step (wrist, elbow and shoulder), as are the loading rates. However, there is significant overlap across the range of measurements and examples of participants with higher force wrist taps than other participants' shoulder taps. This overlap challenges the reliability and reproducibility of ECT results, potentially leading to dangerous interpretations in avalanche decision-making, forecasting and risk assessments. Therefore, we recommend updating the standards for the ECT. We propose two viable paths for future action: (1) define a target impact force-time curve for each tap level and develop tools and training to minimize variability in tapping force (2) assess the significance of the information derived from the number of taps. If deemed not highly valuable, we should consider reverting to a simpler binary interpretation that focuses exclusively on crack propagation.
The development of a reference corner cube inertial suspension device
Authors: Zhang Bing , Zhu Xiaoyi , Wu Qiong , Xue Bing , Xing Lili , Wu Yanxiong , Su Peng , Wang Xiaolei , Wang Yuru , Zhao Shuaibo
Published: December 2023

Abstract. The seismometer synchronous observation and zero crossing methods are applied to laser interferometer absolute gravimeter to suppress the vibration interference. However, during the synchronous observation of the seismometer and the gravimeter, the observation point of the seismometer does not coincide with the reference corner cube in space, resulting in spatial dislocation, which cannot accurately reflect the vibration state of the reference corner cube. So, it is necessary to hang the reference corner cube on the elastic element to directly measure its vibration acceleration measurement. In this paper, an open-loop reference corner cube inertial suspension device(RCCISD) hanging the reference corner cube was developed based on the principle of seismometer, which is used to measure the vibration acceleration of the reference corner cube of the laser interferometer absolute gravimeter. Experimental test results show that the power spectrum of gravitational acceleration calculated by an interference fringe observed jointly by the RCCISD is about 40 dB lower than that of the reference corner cube directly placed on the ground. RCCISD can restrain the vibration interference to a certain extent, not only can it measure the reference corner cube vibration more accurately than the seismograph synchronous observation method for the vibration compensation of gravity measurement, but also the volume is about 1 / 3 of the Super-Spring volume, which can greatly reduce the height of the gravimeter.
EVALUATION OF THE BARK BEETLE GREEN ATTACK DETECTABILITY IN SPRUCE FOREST FROM MULTITEMPORAL MULTISPECTRAL UAV IMAGERY
Authors: Bijou S. , Kupková L. , Potůčková M. , Červená L. , Lysák J.
Published: December 2023

Abstract. Forests have always been a major concern for public authorities given their significant role as a resource for timber production, as well as for climate regulation. The infestation of bark beetles poses a challenging problem in forests, causing tree mortality, reduced timber quality, and ecosystem disruption. Multispectral imagery (MS) captured from unmanned aerial vehicles (UAVs) are increasingly employed for forest health assessment and have been extensively used to map the tree mortality caused by bark beetles. However, its utilisation for the identification of the initial stage of infestation known as "green attack" when infested trees do not display any visible symptoms yet, is still uncertain. This study is innovative in the ways it works with so far rare dense and comprehensive time series of MS UAV imagery starting in the initial month prior to the infestation and before the development of the Bark Beetle (BB) infestation visual symptoms, aiming to evaluate the detectability of bark beetle (Ips typographus L.) green attack. The study area predominantly covered by Norway spruce (Picea abies (L.) Karst.) is located in the Krkonoše Mountains National Park, in the Czech Republic. From May to August 2022, a total of nine MS UAV datasets were acquired with a DJI Phantom 4 MS sensor. The research question is whether infested trees exhibit significantly different changes in the spectra compared to healthy trees at an early stage. The detectability of green attacks was statistically investigated along with the underlying factors (flowering, growth of new shoots) that can affect the accuracy of detection. The results showed a distinct reduction in tree vitality of the infested trees in the late summer season and later stages of infestations. Based on our findings, we conclude that the proposed methods using UAV MS images can be employed to map local infestations and evaluate the tree vitality throughout the season, but the early detection of the green attack stage (in the absence of visible symptoms at the crown level) of Bark Beetle infestation from UAV MS data remains unfeasible. The precision of the detection using statistical methods can be further investigated using a time series of UAV hyperspectral images that offer a higher spectral resolution.
INVESTIGATION OF THE CHALLENGES OF UNDERWATER-VISUAL-MONOCULAR-SLAM
Authors: Grimaldi M. , Nakath D. , She M. , Köser K.
Published: December 2023

Abstract. In this paper, we present a comprehensive investigation of the challenges of Monocular Visual Simultaneous Localization and Mapping (vSLAM) methods for underwater robots. While significant progress has beenmade in state estimation methods that utilize visual data in the past decade, most evaluations have been limited to controlled indoor and urban environments, where impressive performance was demonstrated. However, these techniques have not been extensively tested in extremely challenging conditions, such as underwater scenarios where factors such as water and light conditions, robot path, and depth can greatly impact algorithm performance. Hence, our evaluation is conducted in real-world AUV scenarios as well as laboratory settings which provide precise external reference. A focus is laid on understanding the impact of environmental conditions, such as optical properties of the water and illumination scenarios, on the performance of monocular vSLAM methods. To this end, we first show that all methods perform very well in air and subsequently investigate the degradation of their performance in ever more challenging underwater environments. The final goal of this study is to identify techniques that can improve accuracy and robustness of SLAM methods in such conditions. To achieve this goal, we investigate the potential of image enhancement techniques to improve the quality of input images used by the SLAM methods, specifically in low visibility and extreme lighting scenarios in scattering media. We present a first evaluation on calibration maneuvers and simple image restoration techniques to determine their ability to enable or enhance the performance of monocular SLAM methods in underwater environments.
BACKPACK SYSTEM FOR CAPTURING 3D POINT CLOUDS OF FORESTS
Authors: Goebel M. , Iwaszczuk D.
Published: December 2023

Abstract. A 3D model can be useful for inventory management and monitoring of forests. For this task, we present our prototype mobile mapping backpack system for collecting 3D point clouds of forest vegetation. However, data collection in forests is challenging due to unreliable GNSS positioning, moving objects caused by winds, unclear object edges, and uneven ground to walk on. We include LiDAR and IMU with Simultaneous Localisation and Mapping (SLAM). We describe in detail our backpack system, its development for the forest environment, and evaluate it. Furthermore, we compare two open code SLAM algorithms for ROS, as well as data collection and laser scan quality between TLS and MLS for forest environments. Finally, we installed and tested the MicaSense multi-spectral camera on our backpack and discuss the advantages and drawbacks of it. We conclude, that the backpack is convenient to use in forest environments and produces a good point cloud. It can be carried easily off trail and on rough terrain. The system needs less storage space, computation and less collection time than TLS.
PMLIO: PANORAMIC TIGHTLY-COUPLED MULTI-LIDAR-INERTIAL ODOMETRY AND MAPPING
Authors: Xu Y. , Chen C. , Wang Z. , Yang B. , Wu W. , Li L. , Wu J. , Zhao L.
Published: December 2023

Abstract. The limited field of view (FoV) of single LiDAR poses challenges for robots to achieve comprehensive environmental perception. Incorporating multiple LiDAR sensors can effectively broaden the FoV of robots, providing abundant measurements to facilitate simultaneous localization and mapping (SLAM). In this paper, we propose a panoramic tightly-coupled multi-LiDAR-inertial odometry and mapping framework, which fully leverages the properties of solid-state LiDAR and spinning LiDAR. The key of the proposed framework lies in the effective completion of multi-LiDAR spatial-temporal fusion. Additionally, we employ the iterated extended Kalman filter to achieve tightly-coupled inertial odometry and mapping with IMU data. PMLIO showcases competitive performance on multiple scenarios data, compared with state-of-the-art single LiDAR-inertial SLAM algorithms, and reaches a noteworthy improvement of 27.1% and 12.9% in max and median of absolute pose error (APE) respectively.
GROUND MOVEMENT ANALYSIS IN POST-MINING CITY USING MTINSAR WITH HELP OF EUROPEAN GROUND MOTION SERVICE
Authors: Yang C. H. , Stemmler C. , Müterthies A.
Published: December 2023

Abstract. Ground movement is a critical concern for urban safety, and understanding its causes and consequences is essential. Mining of hard coal in the Ruhr area of Germany has caused long-term subsidence, leading to building damage and sinkholes in affected cities. The multi-temporal interferometric synthetic aperture radar (MTInSAR) technique has been widely adopted for estimating ground movement at millimetre-level accuracy using spaceborne SAR data. Although many European government institutes have implemented this technique for monitoring purposes, the European Ground Motion Service (EGMS) provides up-to-date ground movement products (until the end of 2020) across 31 countries. However, these products may not always meet the requirements for local use due to being untimely or missing important features. This paper demonstrates how we estimated ground movement in Ahlen, around the Ruhr area of Germany, using EGMS data as a priori and reference source. We implemented MTInSAR using Sentinel-1 data from 2018 to 2021 and compared our results with those of EGMS. Our results reveal the movement one year ahead, contain more measurement points, and cover natural areas such as cropland and bare soil. We interpreted several movement scenarios in detail, and our work highlights the benefits of EGMS as an open-source overview for local monitoring applications. We also explored the influence of soil conditions on ground movement. Our findings suggest that the overall uplift trend observed during the post-mining phase has been mitigated or even reversed, likely due to soil shrinkage resulting from drought conditions, particularly in areas with high organic soil content.
USING TIME SERIES IMAGE DATA TO IMPROVE THE GENERALIZATION CAPABILITIES OF A CNN – THE EXAMPLE OF DEFORESTATION DETECTION WITH SENTINEL-2
Authors: Ortega M. X. , Wittich D. , Rottensteiner F. , Heipke C. , Feitosa R. Q.
Published: December 2023

Abstract. Deforestation is considered one of the main causes of global warming and biodiversity reduction. Therefore, early detection of deforestation processes is of paramount importance to preserve environmental resources. Currently, there is plenty of research focused on detecting deforestation from satellite imagery using Convolutional Neural Networks (CNNs). Although these works yield remarkable results, most of them employ pairs of images and detect changes which occurred between the two image acquisition epochs only. Furthermore, these models tend to produce poor results when applied to new data in real-world scenarios. In this regard, an interesting research topic deals with the generalization capacity of the classifiers. CNN-based approaches combined with time series data can be a suitable framework to obtain classifiers that generalize better to new data. Image time series contain complementary information, representing different imaging conditions over time. This work addresses the transferability for detecting deforestation in different areas of the Amazon region, using Sentinel-2 time series and reference maps from PRODES project, which are not required to be synchronized. The results indicate that the classifier with time series data brings a substantial improvement in accuracy by taking advantage of the temporal information.
How do different pathways connect the stratospheric polar vortex to its tropospheric precursors?
Authors: Köhler Raphael Harry , Jaiser Ralf , Handorf Dörthe
Published: December 2023

Abstract. Processes involving troposphere–stratosphere coupling have been identified as important contributors to an improved subseasonal to seasonal prediction in the mid-latitudes. However, atmosphere models still struggle to accurately predict stratospheric extreme events. Based on a novel approach in this study, we use ERA5 reanalysis data and ensemble simulations with the ICOsahedral Non-hydrostatic atmospheric model (ICON) to investigate tropospheric precursor patterns, localised troposphere–stratosphere coupling mechanisms, and the involved timescales of these processes in the Northern Hemisphere extended winter. We identify two precursor regions: mean sea level pressure in the Ural region is negatively correlated with the strength of the stratospheric polar vortex for the following 5–55 d with a maximum at 25–45 d, and the pressure in the extended Aleutian region is positively correlated with the strength of the stratospheric polar vortex the following 10–50 d with a maximum at 20–30 d. A simple precursor index based on the mean pressure difference of these two regions is very strongly linked to the strength of the stratospheric polar vortex in the following month. The pathways connecting these two regions to the strength of the stratospheric polar vortex, however, differ from one another. Whereas a vortex weakening can be connected to prior increased vertical planetary wave forcing due to high-pressure anomalies in the Ural region, the pathway for the extended Aleutian region is less straightforward. A low-pressure anomaly in this region can trigger a Pacific–North American-related (PNA-related) pattern, leading to geopotential anomalies of the opposite sign in the mid-troposphere over central North America. This positive geopotential anomaly travels upward and westward in time, directly penetrating into the stratosphere and thereby strengthening the stratospheric Aleutian High, a pattern linked to the displacement towards Eurasia and subsequent weakening of the stratospheric polar vortex. Overall, this study emphasises the importance of the time-resolved and zonally resolved picture for an in-depth understanding of troposphere–stratosphere coupling mechanisms. Additionally, it demonstrates that these coupling mechanisms are realistically reproduced by the global atmosphere model ICON.
Wear test programs for roller-type pitch bearings of wind turbines
Authors: Stammler Matthias
Published: December 2023

Abstract. Pitch bearings are critical for the safe and efficient operation of wind turbines. They connect the rotor blades to the rotor hub and allow for pitching movements that control loads and rotor speeds. While four-point-contact ball bearings have been dominant in the past, three-row roller bearings are increasingly used in current designs due to their higher load capacity at the same diameter. Wear of the raceways is one of the possible damage mechanisms in pitch bearings. As roller bearings differ significantly from previous designs and because the operational conditions of wind turbines differ from other industrial applications, it is a reasonable de-risking exercise to undergo wear tests prior to the commissioning of such bearings. This study outlines a process for developing a wear test program based on aero-elastic simulation data and wind speed measurements. The process is then applied to an example roller bearing. The final program covers both standstill conditions and pitch cycles. The first is the main addition to former approaches. With existing test rigs and a reasonable budget and timeline, the program can be executed.
Assessment of the Thermal Shock Resistance of Neodymium Doped Alumino-Phosphate Laser Glasses
Authors: Guillet Crystal , Jiménez-Riobóo Rafael José , Munoz Francisco
Published: December 2023

The resistance to thermal shock is one of the main properties to be considered in the design of glasses for their application as high power and high energy laser glasses. Neodymium doped phosphate glasses have inherent spectroscopic advantages for their use as laser hosts, however, their rather low mechanical performance can be a limiting factor for their use. It is very important to characterise the thermo-mechanical resistance of proprietary phosphate glass compositions as laser glasses, however, it is not common to find systematic studies on the influence of glass composition on the thermal shock resistance in phosphate glasses, which is defined as the mechanical resistance of the material to the stresses generated by thermal fluctuations. This includes considering the elastic properties of the medium, its thermal conductivity, the coefficient of thermal expansion and the fracture toughness. In the present work we have studied these properties in a series of alumino-phosphate glasses doped with Nd2O3 as a function of the alumina content. The above properties have been determined by Brillouin spectroscopy, dilatometry and thermal diffusivity, while the fracture toughness has been approached by means of a theoretical model that uses the calculation of the energy necessary to create a new surface while a pre-existing crack progresses. The results showed that the calculated fracture toughness agrees with the one of similar commercial laser glass compositions, and that the thermal shock resistance calculated in the metaphosphate glasses increases with the addition of Al2O3.
Hubungan Status Gizi Dengan Prestasi Belajar Siswa Kelas IX SMP Negeri 2 Kumelembuai
Authors: Wowor Injili Julio , Berhimpong Marnex W. , Bokau Jopie
Published: December 2023

Masalah dalam penelitian ini adalah apakah terdapat hubungan status gizi dengan prestasi belajar siswa kelas IX SMP Negeri 2 Kumelembuai? Tujuan penelitian yaitu untuk mengetahui hubungan status gizi dengan prestasi belajar siswa kelas IX SMP Negeri 2 Kumelembuai. Hipotesis penelitian yaitu terdapat hubungan status gizi dengan prestasi belajar siswa kelas IX SMP Negeri 2 Kumelembuai. Metode yang digunakan dalam penelitian ini adalah metode desktiptif kuantitatif dengan teknik korelasional. Sampel penelitian siswa kelas IX SMP Negeri 2 Kumelembuai berjumlah 20 orang. Instrumen penelitian yaitu untuk mengukur status gizi menggunakan pengukuran berat badan dan tinggi badan yang kemudian dimasukan kedalam rumus IMT sedangkan prestasi belajar menggunakan nilai rapor. Pengujian hipotesis menggunakan teknik statistik dengan uji – t. Hasil penelitian menunjukkan bahwa terdapat hubungan yang sangat kuat antara status gizi dengan prestasi belajar siswa kelas XI SMP Negeri 2 Kumelembuai, yakni sebesar 0,91. Kontribusi variabel X (status gizi) terhadap variabel Y (prestasi belajar siswa kelas XI SMP Negeri 2 Kumelembuai) adalah sebesar 82,81% dan sisanya 17,19% ditentukan oleh variabel lain. Kesimpulan penelitian yaitu terdapat hubungan status gizi dengan prestasi belajar siswa kelas IX SMP Negeri 2 Kumelembuai.
PENGARUH LATIHAN KECEPATAN TERHADAP KEMAMPUAN MENGGIRING BOLA DALAM PERMAINAN SEPAK BOLA
Authors: Ngodu Yordan , Makadada Fredrik , Ompi Serli
Published: December 2023

Rumusan masalah dalam penelitian ini adalah: “Apakah ada pengaruh latihan kecepatan terhadap kemampuan menggiring bola pada pertandingan sepak bola mahasiswa PKL FIK UNIMA? Metode yang digunakan dalam penelitian ini adalah metode eksperimen. Populasi penelitian ini adalah 24 mahasiswa laki-laki semester 5 jurusan FIK PKL yang terbagi menjadi 12 kelompok eksperimen dan 12 kelompok kontrol. Desain penelitian menggunakan kontrol acak sebelum dan sesudah pengujian. Fakta ini dikonfirmasi oleh estimasi akhir dekomposisi statistik uji-t, yaitu tob = 5,181 > ttabel = 2,074, kemudian tolak H0 dan terima Ha. Hasil penelitian menunjukkan bahwa secara keseluruhan, keterampilan menggiring bola meningkat secara signifikan pada kelompok eksperimen menggunakan pendekatan holistik, atau sebagian besar keterampilan menggiring bola pada kelompok kontrol meningkat secara signifikan dalam permainan sepak bola. Kesimpulannya mahasiswa PKL FIK UNIMA efektif dalam meningkatkan keterampilan menggiring bola dalam permainan sepak bola.
Integración de servicios de ciberseguridad y enrutamiento usando software libre basado en pfSense
Authors: Osorto-Rivera Josue Daniel , Miranda Urbina Oscar Rene , Pocasangre Jimenez Carlos Osmin
Published: December 2023

La implementación de medidas de ciberseguridad, para cualquier lugar que requiera una conexión a Internet, es cada vez más importante, convirtiéndose no solo en un extra para los usuarios sino en una necesidad. El desconocimiento de cómo funcionan los ataques cibernéticos es la principal vulnerabilidad ante estos, por lo que la ciberseguridad se convierte en una prioridad. La implementación de redes privadas en Internet es una alternativa para aquellos proyectos que necesitan compartir datos entre conexiones remotas. Implementar una de estas redes puede ser más simple de lo que parece, ya que comprender lo que realmente son, facilita la protección de los datos de los usuarios contra ataques cibernéticos. En este artículo científico se encontrará la implementación de una red privada a través de Internet pública en el Laboratorio de Telemática de la Escuela de Ingeniería Eléctrica de la UES.
A Review of Research on the Impact of Internet Memes on Ideological and Political Education
Authors: Zhu Xiangyi
Published: December 2023

With the development of internet and social media, undergraduates have become one of the main forces on internet platforms. Among this age group, internet meme is a very popular emotional carrier in the process of network communication. Undergraduates are the main force of the future society and students life in university is a significant period of founding correct values. Therefore, how to understand internet memes, how to regard the impact of internet memes, and how to guide college students to use them reasonably becomes an important tasks for college educational workers. This paper is a literature review, that aims to summarize research about the effects of internet memes against ideological and political education in the past decades. The study is based on all the previous research included in CNKI and mainly adopts the literature reading method. The research concludes that educators need to innovate the form of ideological and political education and solve the realistic problems of undergraduates.
Current Situation and Development of Community Nursing in China
Authors: Ma Yifan
Published: December 2023

Community nursing is a continuous, dynamic and comprehensive nursing service based on the knowledge and skills of public health and nursing. It takes the population as the service object and maintains and promotes health as the ultimate goal. With China gradually entering the aging society in recent years, community nursing has become an essential direction of nursing development and an inevitable trend of health care development. Despite the strong support of relevant government departments, Chinas community nursing is developing continuously. However, because of the late start of development, large population base and other reasons, there are still many problems, such as insufficient supply of nursing services, a significant shortage of nursing facilities, and uneven quality of nursing. This paper mainly discusses the above community health care problems caused by Chinas aging population and puts forward some suggestions, for example, the government should appropriately increase investment, strengthen publicity, pay attention to the training of nursing talents, recruit more nursing staff and provide them with corresponding training and assessment, improve the quality of nursing staff, promote the more comprehensive application of community nursing concepts and models, and provide theoretical reference for exploring the establishment of a sound and sustainable community nursing service system in China.
An Analysis of the Alcohol Interventions Around the World
Authors: Feng Yurong
Published: December 2023

Nowadays, global alcohol consumption is expanding rapidly, causing health impacts on global citizens and posing a significant threat to the development of society and countries. Although countries have had relevant policies on alcohol use, it is difficult to achieve the purpose of restriction due to the lack of a unified global convention. This paper emphasizes the focus and direction of alcohol interventions by comparing the different effects of alcohol consumption on different groups of people and puts forward the advantages and disadvantages of the alcohol consumption tax policy, which is now considered the most effective measure in the world, as well as the cognitive blind area that tobacco tax can also intervene in alcohol consumption (synergistic effect of tobacco and alcohol). This paper aims to improve alcohol intervention policies further and make the measures more targeted and implementable according to the corresponding impacts on different groups and the existing defects. Countries are supposed to work together to develop international conventions for alcohol consumption to increase control effectiveness.
Policy Suggestions Based on the New Model of Combining Medical and Elderly Care Services in Rural Areas
Authors: Jin Fu
Published: December 2023

In recent years, population ageing has been deepening, and promoting the combination of medical care and old-age care services is an important measure to optimize the supply of health and old-age care services for the elderly. Although the policy of combining medical and elderly care services in rural areas has been continuously improved and made positive progress, there are still some problems in policy support, service capacity and talent construction. Therefore, the government should carefully plan the rural medical and pension system, formulate medium- and long-term plans, and actively take reform measures to establish a new rural medical and pension model. At the same time, strengthen the law, government supervision and publicity to promote the stable operation of the new model of combining rural medical care and old-age care.