bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intracavity frequency doubling acousto-optic Q-switched high repetition rate high-energy Nd:YLF laser
Authors: Pang Yajun , Xue Ruixiang , Lu Wei , Chen Zhaoyu 
Published: January 2024

The ongoing advancement of Ti:sapphire femtosecond laser technology has drawn increasing attention to high repetition rate, high-energy green lasers as ideal pump sources for Ti:sapphire regenerative amplifiers. This study employed a neodymium-doped yttrium lithium fluoride (Nd:YLF) as the gain medium, supplemented with side-pumped laser diodes, acousto-optic Q-switching, and intracavity frequency doubling technologies. The results demonstrated a repetition rate ranging from 1–10 kHz, a pulse width of less than 100 ns, and a single pulse energy exceeding 50 mJ at 527 nm green light output. Furthermore, an operating stability (RMS) of ≤0.15% was maintained for 14 h at a repetition rate of 1 kHz and an output power of 40 W.
Compact source of energetic sub-nanosecond red pulses based on cascaded quasi-phase-matching in aperiodically poled lithium niobate
Authors: Minor Citlali E. , Cudney Roger S. 
Published: January 2024

We present a simple, compact source of sub-nanosecond pulsed red radiation, based on cascaded nonlinear optical processes—degenerate optical parametric generation and sum-frequency generation—performed with a sample of aperiodically poled lithium niobate pumped by passively Q-switched 1.064 µm Nd:YAG laser. This system does not require feedback from an optical cavity; a single pass of the short pump is all that is required to obtain the cascaded processes, which shortens the output pulse. When pumped with a 1.2 ns, 75 µJ pulse, we obtain 670 ps pulses centered around 709 nm with an energy of 2.8 µJ, corresponding to a peak power of over 4 kW. A numerical model that predicts qualitatively the main characteristics of this source is also presented.
Center extraction method for reflected metallic surface fringes based on line structured light
Authors: Song Limei , He Jinsheng , Li Yunpeng 
Published: January 2024

Using line structured light to measure metal surface topography, the extraction error of the stripe center is significant due to the influence of the optical characteristics of the metal surface and the scattering noise. This paper proposes a sub-pixel stripe center extraction method based on adaptive threshold segmentation and a gradient weighting strategy to address this issue. First, we analyze the characteristics of the stripe image of the measured metal’s surface morphology. Relying on the morphological features of the image, the image is segmented to remove the effect of background noise and to obtain the region of interest in the image. Then, we use the gray-gravity method to get the rough center coordinates of the stripes. We extend the stripes in the width direction using the rough center coordinates as a reference to determine the center of the stripes for extraction after segmentation. Next, we adaptively determine the boundary threshold utilizing the region’s grayscale. Finally, we use the gradient weighting strategy to extract the sub-pixel stripe center. The experimental results show that the proposed method effectively eliminates the interference of metal surface scattering on 3D reconstruction. The average height error of the measured standard block is 0.025 mm, and the repeatability of the measurement accuracy is 0.026 mm.
Assessment of brain tumor detection techniques and recommendation of neural network
Authors: Pande Sandeep Dwarkanath , Ahammad Shaik Hasane , Madhav Boddapati Taraka Phan , Ramya Kalangi Ruth , Smirani Lassaad K. , Hossain Md. Amzad , Rashed Ahmed Nabih Zaki 
Published: January 2024

Abstract

Objectives
Brain tumor classification is amongst the most complex and challenging jobs in the computer domain. The latest advances in brain tumor detection systems (BTDS) are presented as they can inspire new researchers to deliver new architectures for effective and efficient tumor detection. Here, the data of the multi-modal brain tumor segmentation task is employed, which has been registered, skull stripped, and histogram matching is conducted with the ferrous volume of high contrast.

Methods
This research further configures a capsule network (CapsNet) for brain tumor classification. Results of the latest deep neural network (NN) architectures for tumor detection are compared and presented. The VGG16 and CapsNet architectures yield the highest f1-score and precision values, followed by VGG19. Overall, ResNet152, MobileNet, and MobileNetV2 give us the lowest f1-score.

Results
The VGG16 and CapsNet have produced outstanding results. However, VGG16 and VGG19 are more profound architecture, resulting in slower computation speed. The research then recommends the latest suitable NN for effective brain tumor detection.

Conclusions
Finally, the work concludes with future directions and potential new architectures for tumor detection.
Examining the Effects of Trade Liberalisation Using a Gravity Model Approach
Authors: Sertić Martina Basarac , Vučković Valentina , Andabaka Ana 
Published: January 2024

Abstract
The main objective of this article is to study the impact of trade liberalisation in Croatia as one of the first structural reforms being implemented, covering the period from 2000 to 2021. The panel data model was specified using a two-step system generalised method of moment estimator. The obtained results show that trade liberalisation measured through the specific indices encompassing a broader set of both tariff and non-tariff barriers, size of the trade sector, freedom of foreign exchange market, and capital controls positively impacted export performance. The results also showed a negative and statistically significant effect of remoteness on trade, confirming that geographical distance is an essential indicator of transportation costs. The coefficient for Schengen accession was positive and statistically significant, indicating that the Schengen agreement has boosted exports and that we can expect the same for Croatia, especially in the context of simultaneous accession to the Eurozone and the Schengen area on 1 January 2023.
Chalcogenide phase-change material advances programmable terahertz metamaterials: a non-volatile perspective for reconfigurable intelligent surfaces
Authors: Chen Kai , Song Wenju , Li Zhaolin , Wang Zihao , Ma Junqing , Wang Xinjie , Sun Tao , Guo Qinglei , Shi Yanpeng , Qin Wei-Dong , Song Aimin , Chen Hou-Tong , Zhang Yifei 
Published: January 2024

Abstract
Terahertz (THz) waves have gained considerable attention in the rising 6G communication due to their large bandwidth. However, the cost and power consumption become the major constraints for the commercialization of 6G THz systems as the frequency increases. Reconfigurable intelligent surface (RIS) comprising active metasurfaces and digital controllers has been proposed for beamforming in the 6G multiple-input-multiple-output systems, showing good potential to suppress the system size, weight, and power consumption (SWaP). Currently, their controlling diodes can hardly work up to THz frequencies. Therefore, several active stimuli have been investigated as alternatives. Among them, chalcogenide phase-change material Ge2Sb2Te5 (GST) addresses large modulation depth, picosecond switching speed, and non-volatile properties. Notably, the non-volatile GST may enable RIS systems with memory and low control power. This work briefly reviews the advances of GST-tuned THz metamaterials (MTMs), discusses the current obstacles to overcome, and gives a perspective of GST applications in the rising 6G communications.
Imaging the scattered light of a nanoparticle through a cylindrical capillary
Authors: Hohenester Ulrich , Neuper Christian , Šimić Marko , Hill Christian 
Published: January 2024

Abstract
In many experiments, nanoparticles are located inside a microfluidic channel, and the light scattered by the particles becomes diffracted through the walls of the capillary. We here derive a simple but accurate approach for simulating the imaging of light through a cylindrical capillary under the assumption that the dimensions of the capillary are much larger than the wavelength of light. A comparison of the simulated images with experimental results shows very good agreement.
Soundscape maps of pleasantness in a university campus by crowd-sourced measurements interpolation
Authors: Mascolo Aurora , Rossi Domenico , Grimaldi Michele , Guarnaccia Claudio 
Published: January 2024

Abstract
A university campus is a complex environment, as it comprises many areas, each with distinctive acoustic characteristics. There are zones where a quiet environment is crucial for work and study, parking lots and internal road networks, as well as vibrant spaces where students and personnel stay during leisure time. Thus, university campuses clearly offer a remarkable opportunity for the evaluation of soundscape analysis tools and the exploration of new methodologies for assessing and mapping soundscapes. In this work, the Fisciano campus of the University of Salerno (Italy) has been depicted as a case study. Specifically, the outcomes of a soundwalk conducted following ISO/TS 12913 standards will be presented, together with data gathered through crowd-sourcing during NoiseCapture parties. The data from NoiseCapture parties have been used to test and validate an innovative methodology based on an inverse distance weighting interpolation to produce soundscapes’ attributes maps, using the mean pleasantness as an example and exploring the relative influence of the maximum distance used to characterize an homogeneous sound environment to build the maps themselves. The results will offer valuable insights into the proposed methodology.
Aprendizaje de vocabulario a través de neologismos en la prensa femenina española: una propuesta didáctica para inglés como l2 / Vocabulary learning through neologism in spanish women’s press: a didactic approach for learners of l2 english
Authors: Mondéjar Fuster María Dolores , Alcaraz Mármol Gema , Nowak Katarzyna Anna 
Published: January 2024

Resumen En este estudiopresentamos una propuestadidáctica para la enseñanza devocabulario en inglés comosegunda lengua a través de losanglicismos encontrados en laprensa femenina española.Nuestro propósito es plantearuna serie de actividadesbasadas en neologismos parapoder captar la atención denuestro alumnado y tratar elléxico en un contexto auténticoy real. Las actividadespersiguen transmitir a losalumnos la universalidad de lalengua inglesa como vehículode comunicación fomentandosu uso y despertando su interésa través del vocabulario. Lapropuesta consta de cuatrosesiones donde se trabajandistintos aspectos léxicos: lospréstamos lingüísticos, el usodel diccionario, la formaciónde palabras y los campossemánticos. AbstractThis paper presentsa didactic proposal onvocabulary teaching in anEnglish as a Second Languageclassroom, which focuses onanglicisms frequently found inSpanish women´s magazines.Our intention is to develop anumber of activities based onneological borrowings fromEnglish in order to draw ourstudents´ attention, and toapply them to real texts. Thepurpose of the activities is tomake our students reflect onthe universality of the Englishlanguage as a means ofcommunication. We seek topromote its usage, motivate ourstudents and raise their interestin English language learning.Our proposal includes foursessions, each of them focusingon different aspects of lexis:loanwords, using a dictionary,word formation and semanticfields.
Promoting Critical Thinking through the Modification of Questioning Verbs in Writing Assignments: A Study
Authors: Artero Pablo Agustín 
Published: January 2024

Este estudio propone un objetivo doble. Por un lado, un análisis del pensamiento crítico y su aplicación a través de la escritura en alumnos de 3º de la E.S.O. Para ello, se modificó el lenguaje de las preguntas de escritura del libro de texto. A continuación, se implementó una unidad didáctica que destaca la importancia del pensamiento reflexivo para el desarrollo de textos más ricos. Por tanto, el objetivo del estudio es la modificación de verbos de susodichas preguntas por otros en niveles altos de la taxonomía de Bloom. Esta información se recogió a través de observación, cuestionarios inicial y final, y una unidad didáctica con actividades de escritura evaluadas.

Abstract
The aim of the present study is twofold. First off, an analysis regarding 3rd E.S.O students' critical thinking application was procured from their performance from a piece of writing. To promote critical thinking, modification of the language of questions in the course book was purposely executed. This was then followed by an implementation of a whole Didactic Unit designed to enhance the role of reflective questions in the creation of more complex writings. This language modification was erected through the use of verbs contained in Bloom’s taxonomy higher orders. The changes that led students to write longer texts or express more elaborate ideas are also addressed. The data was collected via observation, pre and post questionnaires, and writing assignments.
Keywords: Critical thinking; Writing; Bloom’s taxonomy; Student motivation; Questions.
L1 in CLIL: The case of Castilla-La Mancha / L1 en AICLE: El caso de Castilla-La Mancha
Authors: Martín-Macho Harrison Ana , Faya Cerqueiro Fátima 
Published: January 2024

La enseñanza AICLE implica impartir una DNL (Disciplina No Lingüística) a través de una segunda lengua o lengua extranjera (L2), integrando lengua y contenido. Sin embargo, esta descripción general ignora los contextos docentes donde se emplea la lengua materna (L1). La elección de la lengua puede tener consecuencias tanto en la metodología, en situaciones de aula que favorezcan el uso de la L1, como en los instrumentos de evaluación. Actualmente, los investigadores admiten la importancia de la L1 en AICLE y la legislación sigue gradualmente sus indicaciones. Se ha llevado a cabo un estudio piloto entre maestros de Educación Primaria en la comunidad autónoma de Castilla-La Mancha, España, con el fin de comprobar cómo se abordan estos temas/retos en la escuela. El objetivo del presente estudio es comparar los principales puntos de vista de los agentes implicados en AICLE. El estudio presenta una revisión bibliográfica de las tendencias y estudios recientes sobre AICLE y muestra cómo los recientes cambios legislativos en nuestra región se han adaptado a la investigación. Las opiniones expresadas por maestros en activo revelan la necesidad de indicaciones más claras en la legislación, que debe acercarse a la práctica docente.

Abstract
CLIL settings involve teaching a content subject through a second or foreign language (L2), integrating both language and content. However, this general description ignores classroom scenarios which include the use of the mother tongue (L1). The language choice may affect both methodological practices, namely classroom situations that favour the use of the L1, and also assessment instruments. Nowadays, scholars admit on the relevance of the L1 in CLIL and legislation gradually adapts to these indications. We have conducted a pilot study among Primary school teachers in the autonomous region of Castilla-La Mancha, Spain, in order to check how these issues are tackled at school. Therefore, the aim of the present study is to establish a comparison between the main views expressed by stakeholders involved in CLIL. The study presents a review of recent trends and studies in CLIL research that take into account the role of the L1 in methodology and in assessment, and it shows how recent policy changes in our region have adapted to research. Opinions held by in-service teachers reveal the need for clear policy guidelines, which must necessarily be close to classroom practice.
Keywords: CLIL; Assessment; Primary Education; Educative Legislation
THE SCROTAL COLOUR DOPPLER ULTRASOUND FINDINGS IN INFERTILE MEN FROM 2014 TO 2017 IN SULAYMANIYAH/ IRAQ
Authors: Rasul Baqi 
Published: January 2024

BackgroundMale factor infertility is an increasing clinical problem. The use of Colour Doppler Ultrasonography (CDUS) in a noninvasive imaging technique can help diagnose testicular and extra-testicular abnormalities, especially in patients presented; CDUS is one of the best imaging modality choices in infertility evaluation.
ObjectiveTo determine the capability of the CDUS in identifying the cause of male infertility.
MethodsA cross-sectional study was performed on 309 infertile males referred from Infertility Center /Sulaimani City/ Iraq; the study extended from the year 2014 till the end of 2017. Colour Doppler Ultrasound of the scrotum and its contents was done for each participant in the study group to allocate the possible cause of infertility for each of them. Siemens Acuson X 300- 2010 Ultrasound machine was used for scrotal examination; the type of probe is a linear probe with frequency VF 10-5 MHz.
ResultsThe Colour Doppler Ultrasound of the scrotum detected the presence of abnormal findings in 266/309 (86%) of infertile men; six abnormalities were identified, these are in descending frequency: varicocele 143/309 (46%), thick epididymis in 99/309 (32%) of patients, testicular atrophy in 73/309 (23%) of patients, thick spermatic cord in 28/309 (9%), and cystic transformation of rete testes which was present in 17 (5.5 %) cases.
ConclusionScrotal Colour Doppler ultrasound is an effective, safe, and easy method to detect the leading causes of male factor infertility; it can detect varicocele, thick epididymis, thick spermatic cord, testicular atrophy, cystic transformation of rete testes, or undescended testicle. It would be very beneficial if all male patients with infertility undergo ultrasonic examination of their scrotum.
An Innovative Hybrid Approach for Predicting Crop Yields across Diverse States and Crops
Authors: M. Revathi Et al. 
Published: January 2024

The use of machine learning and deep learning may help estimate crops by automatically extracting attributes and learning from information. Meanwhile, smart farming technology aids farmers in increasing yields by isolating key factors in plant development. In this study, we present a unique hybrid approach (SLR) for predicting crops by extracting key characteristics from SVM (Support Vector Machine), LSTM (Long-Short Term Memory), or RNN (Recurrent Neural Network). Here, we experimented with crops from a variety of states to estimate their potential yields in quintals per hectare. The suggested method has a37.45 percent precision rate, an 80.00 percent recall rate, a51.01 percent fscore, a93.64 percent specificity rate, and an accuracy rate of 93.02 percent.
Advancements in Prostate Cancer Imaging: Implications for Diagnosis and Treatment
Authors: Yogesh R. Jadhav Et al. 
Published: January 2024

The diagnostic and therapeutic approaches for prostate cancer have been completely transformed by the developments in imaging technology. The development of imaging modalities, such as positron emission tomography (PET) and multiparametric magnetic resonance imaging (mpMRI), is examined in this overview, with an emphasis on the diagnostic value of each and the consequences for treatment choices. These methods help with risk assessment and biopsy guiding by providing improved sensitivity and specificity in the detection and characterization of prostate lesions. Focal treatment and image-guided radiation therapy are two examples of imaging-guided therapies that take advantage of accurate lesion location to maximise therapeutic methods and minimise adverse effects. Furthermore, even at lower prostate-specific antigen (PSA) levels, the incorporation of new molecular imaging tracers—in particular, PSMA ligands—has revolutionised staging accuracy and treatment response evaluation.
Notwithstanding these developments, standardisation, affordability, and accessibility issues still exist, impeding wider use. It is important to tackle these obstacles in order to guarantee fair and consistent imaging procedures. Prospective avenues for advancement include the utilisation of cutting-edge technology such as artificial intelligence (AI) to enhance diagnostic precision and customise treatment plans. This thorough analysis highlights the revolutionary effects of cutting-edge imaging modalities on the treatment of prostate cancer and highlights the necessity of teamwork in order to overcome obstacles and improve patient care pathways.
Construction of Communication Protocol Using Ring-LWE-Based Homomorphic Encryption in Iot-Cloud Environment
Authors: Ch Jayanth Babu Et al. 
Published: January 2024

The rapid development of wireless communication and sensor networks is the basis for forming an Internet of things(IoT) infrastructure. In IoT-based applications, the cryptographic encryption and access control at cloud must be robust to withstand current attacks. The majority of security protocols are based on integer factorization and discrete logarithm problems, which are proved vulnerable to quantum attacks. In this paper, we proposed a scheme for the security and privacy of the user data in a cloud environment. Various types of homomorphic encryption schemes are studied for data privacy in the cloud. The Ring-LWE-based encryption scheme is presented for privacy protection in the cloud which meets the homomorphic properties. The scheme is analysed for security, privacy, reduced messaging overhead and computation overhead. The objective of this paper is to Design and Construct a Ring-LWE-based homomorphic encryption(HE) communication protocol for authenticated user message encryption in a IoT cloud computing environment. The evaluation function in holomorphic encryption defined
based on Ring-LWE encryption for a practical sharing-enabled cloud storage. Then, formally proving the security of the proposed protocol for classical and quantum attacks in cloud environment like Manin-the-middle (MITM) attack, Denial of Service (DoS) and Replay Attack.
Effective Policies to Protect Information Resources: Identity Management and Organizational Access Studies X
Authors: Rudolf Sinaga Et al. 
Published: January 2024

Information resources are an important asset for organizations, both government and private. Information resources can be data, systems, or applications used to support organizational activities. Therefore, it is important to protect information resources from various threats, such as cyberattacks, misuse, or loss. Identity and access management (IAM) is one of the efforts to protect information resources. IAM is the process of managing the identity of users and their access to information resources. Effective IAM can help organizations ensure that only authorized users can access information resources, detect and prevent unauthorized access to information resources, and facilitate user identity management. This study aims to examine effective IAM policies to protect the information resources of Organization X. The results show that an effective IAM policy must meet the following criteria: comprehensive; IAM policies should cover all aspects of identity and access management, from user identity creation to access review, risk-oriented; IAM policies should be designed to minimize risks to information resources, Flexible; IAM policies must be adaptable to the changing needs of the organization, Management support; IAM policies must be supported by the organization's management to be implemented effectively. Based on the results of this study, it is advisable to ensure that information security policies remain effective over time, so organizations should carry out regular evaluations to protect their information resources.