bluuebunny/crossref_metadata_2025 huggingface dataset:
Comprehensive performance domain tolerance analysis methodology for freeform imaging spectrometers
Authors: Xing Yujie , Yu Jun , Wang Xuquan , Li Hongmei , He Chunling , Ma Zhiyuan , Wang Dongfang , Wang Zhanshan , Cheng Xinbin , Dun Xiong
Published: March 2024

In recent years, attention has been directed towards cost-effective and compact freeform Schwarzschild imaging spectrometers with plane gratings. The utilization of tolerance analysis serves as a potent approach to facilitate the development of prototypes. Conventional tolerance analysis methods often rely solely on the modulation transfer function (MTF) criterion. However, for a spectrometer system, factors such as the keystone/smile distortion and spectral resolution performance also require consideration. In this study, a tailored comprehensive performance domain tolerance analysis methodology for freeform imaging spectrometers was developed, considering vital aspects such as the MTF, keystone/smile distortion, and spectral resolution. Through this approach, meticulous tolerance analysis was conducted for a freeform Schwarzschild imaging spectrometer, providing valuable insights for the prototype machining and assembly processes. Emphasis was placed on the necessity of precise control over the tilt and decenter between the first and third mirrors, whereas the other fabrication and assembly tolerances adhered to the standard requirements. Finally, an alignment computer-generated hologram (CGH) was employed for the preassembly of the first and third mirrors, enabling successful prototype development. The congruence observed between the measured results and tolerance analysis outcomes demonstrates the effectiveness of the proposed method.
Phase-locked dual-frequency microwave signal generation in an optoelectronic oscillator based on frequency mixing mutual injection
Authors: Fu Zhenwei , Zeng Zhen , Tian Huan , Lyu Weiqiang , Zhang Lingjie , Zhang Yaowen , Zhang Zhiyao , Zhang Shangjian , Zhang Yali , Li Heping , Liu Yong
Published: March 2024

An approach to generating stable phase-locked dual-frequency microwave signals is proposed and demonstrated based on a dual-passband optoelectronic oscillator (OEO). Mode gain competition is broken by employing frequency mixing mutual injection effect to realize phase locking between the two oscillation signals, which is achieved by applying a single-tone signal to a microwave mixer in the OEO cavity. In addition, a dual-loop configuration with balanced detection is utilized to ensure a high side mode suppression ratio (SMSR) and ultra-low phase noise, which also enhances the stability of the generated signal. In the experiment, a phase-locked dual-frequency microwave signal at 9.9982 GHz and 10.1155 GHz is generated by using the proposed OEO scheme. The SMSR and the phase noise are 75 dB and –141 dBc/Hz@10 kHz, respectively. Additionally, the Allan deviation of the generated signal is in the order of 10−11@1 s. These parameters are superior to those based on the same OEO but with a single-loop configuration, which are also compared in detail.
Method to quickly estimate T1 value by suppressing spin exchange relaxation and magnetic field gradient relaxation in atomic sensors
Authors: Wang Xuelei , Li Jianli , Qu Chunyu , Cheng Yu , Zhang Junjie
Published: March 2024

The accuracy of atomic sensor is determined by the transverse nuclear spin relaxation time (T2). As the longitudinal nuclear spin relaxation time (T1) is the upper limit of T2, it becomes an important metric for evaluating the merits of alkali vapor cells. However, the conventional method for measuring T1 of pulse delay takes dozens of minutes, which will increase the effect of random errors during the testing process. In order to solve this problem, a method to quickly estimate the value of T1 is proposed by suppressing the influence of spin exchange relaxation and magnetic field gradient relaxation terms on T2. Experimental results indicate that the accuracy is maintained at above 95%, and the testing time is reduced to less than 5%.
Influence of static and dynamic ocular aberrations on full-field optical coherence tomography for in vivo high-resolution retinal imaging
Authors: Cai Yao , Thouvenin Olivier , Grieve Kate , Mecê Pedro
Published: March 2024

Under spatially incoherent illumination, time-domain full-field optical coherence tomography (FFOCT) offers the possibility to achieve in vivo retinal imaging at cellular resolution over a wide field of view. Such performance is possible, albeit there is the presence of ocular aberrations even without the use of classical adaptive optics. While the effect of aberrations in FFOCT has been debated these past years, mostly on low-order and static aberrations, we present, for the first time to our knowledge, a method enabling a quantitative study of the effect of statistically representative static and dynamic ocular aberrations on FFOCT image metrics, such as SNR, resolution, and image similarity. While we show that ocular aberrations can decrease FFOCT SNR and resolution by up to 14 dB and fivefold, we take advantage of such quantification to discuss different possible compromises between performance gain and adaptive optics complexity and speed, to optimize both sensor-based and sensorless FFOCT high-resolution retinal imaging.
Yb-doped mode-locked fiber laser with a hybrid structure of NPR and a Lyot filter as the saturable absorber
Authors: Pu Yongjie , Guo Pan , Gao Yuan , Shen Qihao , Zhang Zhicheng , Fan Minyu , Wang Sha
Published: March 2024

Passively mode-locked fiber lasers based on a nonlinear polarization rotation (NPR) have attracted much attention due to their ability to generate short pulses with wide spectra and high peak power. However, environmental perturbations can easily cause the lasers to lose the mode-locked state and make it a challenge for practical application. The aim of this research is to improve the laser stability by inserting a Lyot filter into the mode-locked laser cavity. The experimental results indicate that the mode-locked state can be maintained when the radius of the fiber loop is changed from 7.5 to 1.5 cm, while the signal-to-noise ratio of the fundamental frequency remains almost the same. The tunability of the output power can be achieved by adding a half-wave plate (HWP) in the laser cavity without changing the pump power, while the mode-locked state remains stable. By adjusting the angle of the HWP2, the output power can be adjusted from 3.36 to 66.5 mW at repetition rate of 29.7 MHz.
Cryogenic lithium-niobate-on-insulator optical filter
Authors: Cheng Yujie , Feng Lantian , He Jianghao , Song Xinyu , Han Xu , Ding Yuyang , Wang Cheng , Guo Guangcan , Zhang Ming , Dai Daoxin , Ren Xifeng
Published: March 2024

Photonic integrated circuits have garnered significant attention and experienced rapid development in recent years. To provide fundamental building blocks for scalable optical classical and quantum information processing, one important direction is to develop cryogenic compatible photonic integrated devices. Here, we prepare one optical filter on a lithium-niobate-on-insulator (LNOI) platform based on a multimode waveguide grating and verify its availability at temperature from 295 to 7 K. We find that the integrated optical filter still shows good quality under cryogenic conditions, and the shift of the working wavelength at different temperatures is well explained by the index variation of the material. These results advance LNOI integrated optical devices in applications under cryogenic conditions.
Enrichment on steps, not genes, improves inference of differentially expressed pathways
Authors: Markarian Nicholas , Van Auken Kimberly M. , Ebert Dustin , Sternberg Paul W.
Published: March 2024

Enrichment analysis is frequently used in combination with differential expression data to investigate potential commonalities amongst lists of genes and generate hypotheses for further experiments. However, current enrichment analysis approaches on pathways ignore the functional relationships between genes in a pathway, particularly OR logic that occurs when a set of proteins can each individually perform the same step in a pathway. As a result, these approaches miss pathways with large or multiple sets because of an inflation of pathway size (when measured as the total gene count) relative to the number of steps. We address this problem by enriching on step-enabling entities in pathways. We treat sets of protein-coding genes as single entities, and we also weight sets to account for the number of genes in them using the multivariate Fisher’s noncentral hypergeometric distribution. We then show three examples of pathways that are recovered with this method and find that the results have significant proportions of pathways not found in gene list enrichment analysis.
A recurrent case of SCN4A related Paramyotonia congenita in two Korean brothers: a case report
Authors: Kang Minsung , Kim Sohyeon , Hah Hyungseok , Seok Hung Youl , Park Jin-Sung
Published: March 2024

Paramyotonia congenita (PMC) is characterized by nondystrophic myotonia aggravated by exercise and cold exposure. SCN4A mutations manifest as various phenotypes of channelopathy, including PMC, myotonia congenita, and periodic paralysis. SCN4A-related channelopathy is characterized by autosomal dominant inheritance. Parental gonadal mosaicism is suspected in cases of recurrent de novo mutation in an autosomal dominantly inherited disease. We report a case of two Korean brothers presenting with PMC due to same de novo SCN4A point mutation, probably due to parental gonadal mosaicism.
Effect of Palm Oil Wastes Soil On Crop Germination in Ogodo, Kogi State
Authors: Egu Dr. Samuel Attah , Momoh Theophilus Boniface , Iyeh Veronica Amina
Published: March 2024

The study looked into how different soil properties and Amaranthus hybridus growth were affected by palm oil wastes. Comparing the contaminated soil with the control sample, physico-chemical examination showed that the contaminated soil had greater amounts of Na, K, Mg, Ca, TEB, EA, ECEC, AP, WHC, pH, OC, and TN. Particle size measurement revealed differences in the amounts of silt, clay, and sand; samples closer to the dumpsite and in the vicinity were primarily classified as sandy clay loam, whereas those farther away were classified as sandy loam. The palm oil waste soil had a substantial impact on the germination count and growth characteristics of A. hybridus, with greater counts and growth noted in contaminated soil compared to control. Significant effects were also observed in antioxidant activity, with the dumpsite showing the strongest suppression of DPPH radicals. Furthermore, there were notable differences in the proximate and mineral elements of A. hybridus. Plants grown in soil contaminated with palm oil waste were found to have higher levels of protein, ash, fiber, moisture, carbohydrates, and lipids than the control. The contents of soil samples differed in terms of calcium, iron, potassium, and phosphorus, but there was no discernible difference in sodium and zinc. The study's overall findings demonstrate the profound effects of palm oil wastes on the physico-chemical characteristics of soil, plant growth, and nutritional value.
Das Jornadas de 2013, de Rousseff ao “Capitão”
Authors: FILOMENA CESAR LUCIANO
Published: March 2024

Esse trabalho aborda a trajetória da crise brasileira pós-2013 e alterações institucionais subsequentes. Nela, setores da Justiça e do controle de contas públicas, da tecnoburocracia e do capital se articularam à ascensão de neófitos políticos de linha conservadora e antigos defensores do período de Regime Autoritário Brasileiro. Investiga as razões para mudanças de rumos institucionais vigentes até Rousseff. Analisa a identidade dos agentes políticos, suas posições e com base em evidências, os interesses latentes que os motivaram a proporcionar profundas mudanças nas políticas construídas na década de 2000 para as de 2010. Pesquisa qualitativa, exploratória e documental, que segue uma abordagem institucionalista assentada na análise da sequência de eventos nos quais a conjuntura e timings importaram para mudar a trajetória bem-sucedida dos regramentos instituídos nos governos democrático-emancipatórios do PT, os substituindo por novas instituições liberais e autoritário-conservadoras.
Optimal Hybrid Control of a Gyroscope System
Authors:   Politechnika Świętokrzyska, Krzysztofik Izabela , Koruba Zbigniew
Published: March 2024

The paper analyses the selection of optimal controllers (LQR, SMC and PD) for a mechatronic gyroscope system used in scanning-tracking heads of mobile objects such as spacecrafts, unmanned land vehicles, flying drones or self-guided missiles. The integral of the absolute value of the deviation error of the set motion from the real moving object and the integral of the square of the state and control have been taken as the quality criterion. The results of computer simulation studies are presented.
Kalman Filter as an Alternative to Extended State Observer in ADRC Control Algorithm
Authors:   Politechnika Poznańska, Michalski Jacek , Mrotek Mikołaj , Kozierski Piotr
Published: March 2024

The article presents a modified Active Disturbance Rejection Control (ADRC) algorithm that uses the Kalman Filter (KF) for the estimation of extended state vector. The Kalman filter replaced the Extended State Observer (ESO) used in its basic form. The purpose of this modification was to improve the system robustness under conditions of stochastic measurement disturbances. The method of the control system synthesis and the Kalman filter gains selection, ensuring control efficiency, as well as their impact on the system operation, were presented. The experiments were carried out on a laboratory setup – the Ball Balancing Table (BBT). Control quality was assessed based on time plots of signals and integral performance indices for various algorithm gains configurations and different noise levels. As a result of the conducted research, the advantage of using the Kalman filter over the ESO in terms of sensitivity to measurement noises was demonstrated. Implementation of the Kalman filter as the ESO determined a positive impact on control quality and the ability to reject internal disturbance also in a deterministic system.
Studying the Potential of iPAD-LiDAR Technology in the Inventory of Building Structures
Authors:   Politechnika Koszalińska, Suchocki Czesław , Katzer Jacek ,   Uniwersytet Warmińsko-Mazurski w Olsztynie, Zawidzki Machi ,   Sieć Badawcza Łukasiewicz – Przemysłowy Instytut Automatyki i Pomiarów PIAP, Nowak Rafał ,   Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
Published: March 2024

The article presents a research program aimed at preliminary determination of the potential of iPAD-LiDAR technology in the inventory of building structures. The authors focused on the use of commercially available devices (mobile phones and tablets) equipped with a LiDAR sensor. Such devices can be treated as low-cost measuring devices and used for engineering measurements. The first possible area of use of the devices discussed is broadly understood construction inventories, which, when performed using traditional methods, always involve a large amount of work. The automation of this process and the quality and quantity of data obtained during the inventory create a completely new technical reality and related measurement and diagnostic possibilities.
The Use of Fractional Order Calculus in 3D Crane Control
Authors:   Politechnika Gdańska, Kędziora Michał , Leszczyński Krzysztof , Piotrowski Robert
Published: March 2024

The 3D crane is an object used in various industries. From a control point of view, it is a dynamic, non-linear and multidimensional system. In this paper, two control systems are designed: with a classical PID controller and with a fractional-order PID controller. A comparative analysis of the designed control systems is presented.
Thermal Impedance Measurement of Thick-Film Resistor in High-Frequency Range Using Single-Detector IR System
Authors:   Politechnika Łódzka, Strąkowska Maria , Więcek Bogusław , De Mey Gilbert ,   University of Ghent
Published: March 2024

This paper presents an innovative and simple method of high-frequency thermal impedance measurement using infrared (IR) technique. The method is based on the Fourier transformation of the input power signal and the thermal response of the object after supplying the heat source with square-wave current of different frequencies. The experiment was carried out using a single-detector, low-cost infrared system equipped with a photovoltaic detector module to measure the thermal impedance of an SMD thick-film resistor. Both the simulation using a compact thermal model and the measurement results are discussed.
Repensando la evaluación de los aprendizajes en la cátedra de matemática como lenguaje
Authors: Nardoni Marta Graciela , Roldán Gabriela de Lourdes , Zanabria Claudia Mariel , Valetti Verónica Guadalupe , Rogiano Cristina Mercedes
Published: March 2024

Nuestra cátedra Matemática como Lenguaje (Facultad de Ciencias Económicas de la Universidad Nacional del Litoral) se diseña en el marco de un nuevo Plan de Estudios para las ciencias económicas. Su inserción en el primer año de las carreras de grado señala dos desafíos centrales. Uno de ellos es lograr la homogeneidad en las habilidades y capacidades matemáticas de los ingresantes para garantizar igualdad cognitiva con oportunidades para afrontar los aprendizajes matemáticos universitarios. El segundo desafío es lograr un sistema de evaluación de los aprendizajes que permita valorar conocimientos y competencias durante todo el desarrollo de la asignatura de manera que sea posible otorgar la promoción de la asignatura sin examen final. En el marco del proyecto CAI+D 2020 y el modelo de evaluación basado en evidencias comenzamos durante 2021 a diseñar instrumentos de evaluación de los aprendizajes tal que proporcionen información explícita para realizar inferencias válidas sobre los conocimientos construidos y competencias desarrolladas por los estudiantes. Para realizar una evaluación continua de los estudiantes se aplica la propuesta denominada: “Evaluación de Evidencias de Aprendizajes y Desempeño" que incluye cinco evaluaciones de Evidencias de Aprendizaje y una de Desempeño. Concluyendo, la evaluación tiene, entre otras funciones, la de proporcionar información sobre la efectividad del proceso de enseñanza y de aprendizaje, contribuyendo así, a la retroalimentación de la labor docente y a la promoción de espacios de reflexión para diseñar nuevas estrategias pedagógicas para mejorar los aprendizajes de los estudiantes.
Costos de la interrupción voluntaria del embarazo en Argentina en 2020
Authors: Manzuelli Carolina
Published: March 2024

A raíz del fuerte debate social sobre la legalidad de la interrupción voluntaria del embarazo, en este trabajo se estimaron los costos económicos para el estado bajo dos situaciones: una en la que la práctica es legal realizada por el estado y por privados y, otra, hace referencia a la situación en la que la práctica es ilegal, pero el estado luego cubre los gastos de complicaciones, como lo fue hasta diciembre de 2020. La mayor complicación resultó en estimar la cantidad de abortos realizada en el año 2020 en Argentina, ya que debido a la ilegalidad no se cuenta con datos certeros. Lo que llamó la atención es como a través del método residual de Johnson y Hill encontramos que la cantidad de prácticas realizadas puede disminuir considerablemente si se refuerza en el buen uso de anticonceptivos. Los costos de practicarse un aborto de forma segura, en un hospital, son mucho menores que si se realizan de forma insegura. Se plantearon tres escenarios y dos practicas seguras, lo que nos llevó a observar una disminución de costos para el estado que va de 19 % a 79 % al pasar de atender consecuencias por abortos inseguros a realizar la práctica segura y de forma legal brindando la información y atención necesaria.
The Influence of Foreign Direct Investment (FDI), International Tourism and Export Value on Economic Growth in Member Countries of the Organization of Islamic Cooperation (OIC) During 2010-2020
Authors: Imazzuman Siddiqi  , Sunaryati
Published: March 2024

Studies the effect of FDI, international tourism, export on economic growth have various results. Therefore, this study aims to determine the effect of FDI, international tourism, and exports on economic growth in OIC member countries in the 2010-2020 period using the panel data regression method. The number of samples used in this study were 45 countries. Simultaneously, there is a significant influence between the variables of FDI, international tourism, and export value on economic growth in OIC member countries. While partially FDI shows negative and significant results. On the other hand, international tourism has a positive and significant effect and exports also have a positive and significant effect. This study is only limited to 11 periods and three independent variables. For future researchers, it is expected to develop the number of variables and can increase the observation time.
Shariah Governance Practice on Indonesian Islamic Banks
Authors: Muhfiatun  , Prasojo Prasojo , Listiyorini Inon , Utami Ristianawati Dwi
Published: March 2024

Research Aims: This study aims to assess the implementation of Shariah governance in Indonesian Islamic banks.
Methodology: This study utilises a qualitative approach coupled with content analysis; this study evaluates the alignment of Sharia Supervisory Board (SSB) practices with relevant regulations.
Research Findings: The analysis revealed that none of the Islamic banks breached regulations or deviated from the prescribed criteria in the Sharia Supervisory Board (SSB) recruitment or characteristics.
Theoretical Contribution: This study is poised to enrich the diversity of backgrounds within the Sharia Supervisory Board (SSB), aiming to elevate its overall quality.
Research limitation and implication: This study exclusively examines the framework of Sharia governance within the context of Indonesia, and therefore, the findings should be separate from diverse country contexts.
Socialization of Cash Waqf Literacy as a Waqf Solution For Millennial Generation Students in Kulon Progo Regency
Authors: Pambudi Ifan Agung , Hediantoro Hediantoro , Widyaningrum Dita , Saputra Rizky Surya , Sholikhah Nafis , Safitri Aulia Nurul , Remalia Febrian Yena , Mashum Chilmi Syafiq , Arifah Choirul , Purniaji Mellyana Alvi , Anam Fikri , Tulaulia Sakina , Nafisa Shafa Yulita Salma , Imtiqomah Nurul
Published: March 2024

The socialization entitled "Awareness of Cash Waqf Literacy as a Waqf Solution for Millennials in Kulon Progo Regency Students" aims to broaden insights about cash waqf and how to make a cash waqf so that it is expected to generate interest in cash representation. The method of carrying out cash waqf literacy socialization activities uses lecture and discussion methods. The socialization was held in the meeting room of the Kulon Progo Tourism Office at 17.00 West Indonesia Time with 45 participants consisting of members of the Kulon Progo Student Association (IMKP). The results of this cash waqf socialization is to provide knowledge about cash waqf as a solution for giving to young people who provide ease of speaking in this 4.0 era.Keywords: socialization, millennials, cash waqf.
DESIGN PATTERNS OF WOMEN EMPOWERING MSMEs THROUGH FINANCIAL MANAGEMENT PLANNING AND REPORTING AND UTILIZATION OF INFORMATION TECHNOLOGY
Authors: Putra Rosyid Nur Anggara , Nugroho Muh. Rudi , Julendra Alif Khuwarizmi Maulana , Fahmi Alif Miftahul
Published: March 2024

This study aims to develop a training pattern design to improve the ability of MSME actors in running their businesses. The first is to design financial planning and reporting in Patukgawemulyo Village, Mirit District, Kebumen Regency; Identify priorities for developing MSME actors in Patukgawemulyo Village, Mirit District, Kebumen Regency in fulfilling the family economy. Formulating a training pattern for female MSME actors in planning and compiling financial reports in Patukgawemulyo Village, Mirit District, Kebumen Regency. The implementation of this research uses the participatory action research (PAR) method, while the pattern is that the planning and financial reporting of MSME actors in Patukgawemulyo Village, Mirit District, Kebumen Regency is still done manually and mixes personal needs with business, so it is difficult to know the real condition of the business whether it is profitable or not. loss, the priority of developing MSME actors in Patukgawemulyo Village, Mirit District, Kebumen Regency based on the analysis is that administrative arrangements are carried out both manually and using information technology; The pattern of training for MSME actors in planning and compiling financial reports in Patukgawemulyo Village, Mirit District, Kebumen Regency begins with basic accounting equations, and can also take advantage of information technology assistance in preparing financial reports.