bluuebunny/crossref_metadata_2025 huggingface dataset:
Анизотропия и медленная релаксация аномального эффекта Холла в синтетических ферримагнетиках GdFeCo/Ir/GdFeCo
Authors: Бахметьев М.В. , Таланцев А.Д. , Коплак О.В. , Моргунов Р.Б.
Published: December 2022

In synthetic ferrimagnets with perpendicular anisotropy GdFeCo/Ir/GdFeCo, the dependence of the hysteresis loops of the anomalous Hall resistance and the characteristics of the loops on the angle between the magnetic field and the plane of the sample are analyzed. The part of the anomalous Hall resistance corresponding to the spin-orbit torque has been identified. The field dependences of the resistance are sensitive to switching between the magnetic states of the two-layer ferrimagnet and they reproduce the shapes of the magnetization hysteresis loops, calculated with the interlayer exchange interaction, crystal anisotropy, and Zeeman energies at different angles between the field and sample. A slow (~30 min) magnetic relaxation of resistivity hysteresis after reorientation of the sample in magnetic field was found. Specific domain dynamics inherent in two-layer samples was revealed by Kerr microscopy. It was found that slow restoration of the resistivity hysteresis loop is due to domain propagation.
Электронная структура и рентгеноспектральные характеристики полупроводниковой и металлической фаз дисилицида железа
Authors: Потуданский Г.П. , Курганский С.И.
Published: December 2022

Within the framework of the full-potential method of augmented plane waves with local orbitals, the electronic structure and X-ray spectral characteristics of the semiconductor and metal phases of iron disilicide were calculated. The total and partial densities of electronic states, the band structure, and X-ray absorption spectra of the iron K-edge were calculated. The results are compared with the known experimental data. An explanation is given of the change in the X-ray absorption near edge structure during the transition from the semiconductor phase to the metallic one.
Новые центры рекомбинации в слоях КРТ МЛЭ на подложках (013) GaAs
Authors: Дворецкий С.А. , Ступак М.Ф. , Михайлов Н.Н. , Варавин В.С. , Ремесник В.Г. , Макаров С.Н. , Елесин А.Г. , Верхогляд А.Г.
Published: December 2022

A large inhomogeneity of the minority lifetime from 1 to 10 µs at 77 K over the area is observed in some experiments when high-quality HgCdTe layers of the electronic type of conductivity are grown on GaAs substrates with a diameter of 76.2 mm with the (013) orientation by the method of molecular beam epitaxy. As a rule, the such lifetimes are determined by carrier recombination at Shockley-Hall-Read (SHR) centers. Modern studies and ideas about the nature of the SHR centers do not allow us to explain the observed results. The measurements of HgCdTe layers by the second harmonic generation showed the existence of a quasi-periodic change in the signal at the minima of the azimuthal dependence, which is associated with the appearance of misoriented microregions of the crystal structure. The amplitude of the quasi-periodic change in the signal decreases with increasing lifetime and completely disappears for regions with higher lifetime values. Similar dependences are observed during etching of HgCdTe layers, which indicates the existence of misoriented microregions in the bulk. Thus, misoriented microregions of the crystal structure have a significant effect on the lifetime and are new centers of Shockley-Hall-Read recombination.
Проявление обменного взаимодействия электронов, разделенных потенциальным барьером в двойных квантовых ямах, в эффекте Керра
Authors: Дегоев М.М. , Афанасьев М.М. , Калевич В.К. , Кавокин К.В. , Козырев Н.В. , Karczewski G. , Кусраев Ю.Г.
Published: December 2022

In tunnel-coupled quantum wells of different widths, it was found that the spin dynamics arising from resonant pulsed optical pumping of an exciton in the narrow well includes the dynamics of electron spin polarization in the wide well, although the electron level in the wide well is 55 meV lower than the electron level in the narrow well. An analysis of the obtained results showed that the observed effect is caused by the exchange interaction of spin-polarized electrons in the wide well with exciton states in the narrow well.
Плазмолиз метана при помощи высокочастотного плазмотрона
Authors: Водопьянов А.В. , Мансфельд Д.А. , Синцов С.В. , Корнев Р.А. , Преображенский Е.И. , Чекмарев Н.В. , Ремез М.А.
Published: December 2022

The possibility of converting methane into hydrogen using a high-frequency induction plasma torch at atmospheric pressure has been experimentally studied. The dependencies of the degree of methane conversion and the rate of hydrogen production were studied depending on the process conditions. It has been demonstrated that the degree of conversion of methane to hydrogen can reach values close to 100%.
Визуализация потока в каверне с активным управлением с помощью актуатора диэлектрического барьерного разряда
Authors: Казанский П.Н. , Селивонин И.В. , Моралев И.А.
Published: December 2022

The results of hydrodynamic pressure fluctuations control by means of dielectric barrier discharge plasma actuator in a rectangular cavity with sharp edges are presented. The study was carried out at the free flow velocity V∞=37 m/s. The discharge was organized near the leading edge of the cavity. The average energy of the discharge pulse was 0.03 J, its duration was 1 ms, and frequency modulation was implemented at the natural resonant frequencies of 500, 817, 1317 Hz of the cavity and a high frequency of 2160 Hz, which did not correspond to the natural resonant pressure peak. Pressure pulsations were measured with a Kulite pressure transducer. It is established that the discharge regime affects the pressure fluctuations in the cavity. The pressure amplitude at the downstream wall of the cavity can be increased from 117 dB to 128 dB or decreased to 110 dB, respectively, if the dominant or higher modes are pumped by the discharge. The PIV visualization was organized in phase-locked mode. The pressure spectrum corresponds to the magnitude of coherent structures in the shear layer of the cavity.
Кольцевой магнитоэлектрический эффект в цилиндрических структурах пьезоэлектромагнитострикционных композитов при поперечном намагничивающем поле
Authors: Wu Gaojian , Zhang Ru
Published: December 2022

Strong circumferential magnetoelectric (ME) effect has been observed in cylindrical PZT/Terfenol-D composite with transverse bias magnetic field. With dc bias magnetic field along axial direction and ac magnetic field along circumferential direction, strong ME voltage is obtained as 0.93 Vcm-1Oe-1 at off-resonance frequency 1 kHz and as high as 32 Vcm-1Oe-1 at resonance frequency fr=46.0 kHz, which is much higher than that observed in planar ring-type ME laminate. The enhanced circumferential ME effect is attributed to improved interface mechanical coupling via normal stress. At room temperature, induced voltage from this cylindrical ME composite exhibits a near-linear response to applied ac vortex magnetic field amplitude over a wide magnetic field range of 10-8<Hac<10-5 T both at low frequency and resonance frequency. Moreover, induced voltage has an excellent flat response to applied ac magnetic field frequency between Hz and kHz. The strong and stable circumferential ME effect in cylindrical ME laminate offers potential in vortex magnetic field sensor applications.
An Accessible Clinical Decision Support System to Curtail Anesthetic Greenhouse Gases in a Large Health Network: Implementation Study
Authors: Ramaswamy Priya , Shah Aalap , Kothari Rishi , Schloemerkemper Nina , Methangkool Emily , Aleck Amalia , Shapiro Anne , Dayal Rakhi , Young Charlotte , Spinner Jon , Deibler Carly , Wang Kaiyi , Robinowitz David , Gandhi Seema
Published: December 2022

Background

Inhaled anesthetics in the operating room are potent greenhouse gases and are a key contributor to carbon emissions from health care facilities. Real-time clinical decision support (CDS) systems lower anesthetic gas waste by prompting anesthesia professionals to reduce fresh gas flow (FGF) when a set threshold is exceeded. However, previous CDS systems have relied on proprietary or highly customized anesthesia information management systems, significantly reducing other institutions’ accessibility to the technology and thus limiting overall environmental benefit.

Objective

In 2018, a CDS system that lowers anesthetic gas waste using methods that can be easily adopted by other institutions was developed at the University of California San Francisco (UCSF). This study aims to facilitate wider uptake of our CDS system and further reduce gas waste by describing the implementation of the FGF CDS toolkit at UCSF and the subsequent implementation at other medical campuses within the University of California Health network.

Methods

We developed a noninterruptive active CDS system to alert anesthesia professionals when FGF rates exceeded 0.7 L per minute for common volatile anesthetics. The implementation process at UCSF was documented and assembled into an informational toolkit to aid in the integration of the CDS system at other health care institutions. Before implementation, presentation-based education initiatives were used to disseminate information regarding the safety of low FGF use and its relationship to environmental sustainability. Our FGF CDS toolkit consisted of 4 main components for implementation: sustainability-focused education of anesthesia professionals, hardware integration of the CDS technology, software build of the CDS system, and data reporting of measured outcomes.

Results

The FGF CDS system was successfully deployed at 5 University of California Health network campuses. Four of the institutions are independent from the institution that created the CDS system. The CDS system was deployed at each facility using the FGF CDS toolkit, which describes the main components of the technology and implementation. Each campus made modifications to the CDS tool to best suit their institution, emphasizing the versatility and adoptability of the technology and implementation framework.

Conclusions

It has previously been shown that the FGF CDS system reduces anesthetic gas waste, leading to environmental and fiscal benefits. Here, we demonstrate that the CDS system can be transferred to other medical facilities using our toolkit for implementation, making the technology and associated benefits globally accessible to advance mitigation of health care–related emissions.
Scientific Knowledge Graph of Dysmenorrhea: A Bibliometric Analysis from 2001 to 2021 (Preprint)
Authors: Fang Xiaoting , Liu Haijuan , Wang Guohua
Published: December 2022

BACKGROUND

Dysmenorrhea, including primary and secondary, is defined as pain in the lower abdomen occurring before or during menstruation. It was reported that dysmenorrhea accounted for 600 million lost work hours and $2 billion lost productivity annually. The loss in working hours and school days induced by dysmenorrhea has affected national economy.

OBJECTIVE

The purpose of this study is to provide valid data on the scientific progress of this disease through bibliometric analysis, which may help researchers to know its status and pick up the most active hotspots and trends quickly.

METHODS

We retrieved literatures on WOSCC from Jan 1st, 2001 to Dec 31th, 2021 and finally acquired 944 papers. Bibliometric analysis software CiteSpace was used in combination with VOSviewer.

RESULTS

The research trend over the last 21 years in dysmenorrhea can be evaluated through the number of papers in each year. An upward trend in articles continued in this field on the whole. Through the map, China contributed the most, followed by The United States and Turkey. For institutions, Beijing University of Chinese Medicine in China contributed most, followed by National Yang-Ming University in Taiwan, China, and Chengdu University of Traditional Chinese Medicine in China. Hsieh JC and Hellman KM were both the most proliﬁc author with 14 articles. We can find 5 major research groups, respectively with Hsieh JC, Hellman KM, Zhu J, Liang F and Dun W as the core of the group. Dawood MY is the most famous author and the most frequently cited author with 488 citations. Advances in pathogenesis and management for primary dysmenorrhea wrote by Dawood MY was most cited of 197 citations and most inﬂuential. Pathophysiology, the potential central mechanism, syndrome, evaluation index, diagnosis to adenomyosis-associated dysmenorrhea, treatment, et al, were the main trends and hotspots.

CONCLUSIONS

The cooperative relationships among authors, countries, and institutions, as well as research hotspots and trends in the ﬁeld of dysmenorrhea were presented, which can guide scholars to look for new research directions. Further and closer cooperation among authors, institutions, and countries in the future is expected to accelerate the development of dysmenorrhea research.
An Assessment of the use of the ISO 50001 Certified Energy Management Systems by Airports
Authors: Baxter Glenn
Published: December 2022

This study has examined the airports located throughout the world that have implemented an ISO 50001 certified Energy Management System (EMS). The research used an in-depth instrumental case study research design. The study period was from 2011 to 2022. The study found that ISO 50001 certified Energy Management Systems are increasingly being adopted by airports and these systems are playing a key role in their environmental management. Airports located in China, Cyprus, Hong Kong, Europe, India, Turkey, Sweden, United Kingdom, United States of America have implemented ISO 50001 certified Energy Management Systems since the inception of this standard in 2011. ISO 50001 certified Energy Management Systems have been implemented by hub airports, by airports that service both domestic and international airlines services, and by smaller regional airport. The case study found that airports are using their ISO 50001 certified Energy Management System to optimize their energy efficiency. These airports have implemented a very wide range of energy conservation measures, including the use of light emitting diode (LED) systems, the electrification of ground service equipment and vehicles, the installation of electric vehicle charging stations, the installation of photovoltaic (PV) solar systems, building heating and cooling systems optimization, and the optimization of energy for plant and equipment. The case study also highlighted the importance that the airports using an ISO 50001 certified Energy Management System are placing on the use of more environmentally friendly renewable energy sources.
A systematic review of discounting in national health economic evaluation guidelines: healthcare value implications
Authors: Williams Abimbola O , Rojanasarot Sirikan , McGovern Alysha M , Kumar Arun
Published: December 2022

Aim:
This review summarizes the discounting approaches recommended in current economic evaluation (EE) guidelines for healthcare programs and interventions.
Materials & methods:
A systematic review of EE guidelines for healthcare, published up to July 2022, was conducted.
Results:
A total of 52 EE guidelines were reviewed. The majority of these guidelines recommend equal discounting (80.8%) rather than differential discounting (9.6%). The rationale for equal discounting includes recommendations by the government, consistency with other countries, and economic development. However, the rationale for differential discounting is based on the interest in short-term government bonds and anticipated budget changes.
Discussion:
This review demonstrates variation in both discounting approaches and rates across EE guidelines and underscores the need for a global consensus on discounting approaches.
In-hospital mortality in amyloid light chain amyloidosis: analysis of the Premier Healthcare Database
Authors: Quock Tiffany P , D'Souza Anita , Broder Michael S , Bognar Katalin , Chang Eunice , Tarbox Marian H
Published: December 2022

Aim:
Describe the clinical and economic burden of hospitalizations for amyloid light chain (AL) amyloidosis.
Materials & methods:
This retrospective analysis used nationally representative hospital discharge data (2017–2020) to report discharge status, resource use and costs for hospitalizations among patients with AL amyloidosis.
Results:
Of 1341 patients identified, 92% were discharged alive and 8% experienced in-hospital death. Compared with the average US hospital stay during 2017–2019 (4.7 days, mean costs of $13,046 and mean charges of $54,496), hospital stays for AL amyloidosis were longer and costlier (9.7 days, $27,098.61, $111,233.91), especially in patients with in-hospital death (12.2 days, $44,966, $182,338.18).
Conclusion:
AL amyloidosis is associated with significant clinical and economic burden.
Celebración y sonoridad en las catedrales novohispanas
Authors:   Centro de Investigación de Música Religiosa Español, López Calo José , Frenk Margit ,   Universidad Nacional Autónoma de México, Morales Abril Omar ,   INBA, Cenidim
Published: December 2022

Esta obra retoma el tema de la celebración y sonoridad en las catedrales novohispanas, y para su reflexión parte de las investigaciones desarrolladas por los ilustres musicólogos estadounidenses Robert. M. Stevenson y Robert Snow. Otro importante investigador, José López Calo, aporta su experiencia y recuerdos personales del trato académico y amistoso que sostuvo con estos autores norteamericanos. La relación entre la ritualidad y la música en las celebraciones catedralicias ha sido uno de los temas fundamentales en la historia cultural de los virreinatos. Anastasia Kurtitskaya y Édgar Alejandro Calderón Alcántar coordinan los estudios que aparecen aquí sobre el tema organizando cinco secciones que retoman la discusión sobre el fenómeno de la celebración catedralicia a partir de los sujetos que la conforman: el cabildo catedralicio, la capilla de música, el repertorio musical, el sermón, los villancicos, las fiestas catedralicias, el espacio catedralicio y el público con sus propias formas de recepción. Las reflexiones que se presentan son testimonio del coloquio “Celebración y sonoridad en la catedrales novohispana”, organizado por la Universidad Nacional Autónoma de México y el Conservatorio de las Rosas en 2014.
Vivienda ecotecnológica básica para zonas rurales: una revisión de literatura
Authors: Olaya-García Belén , Delgado Ramos Gian Carlo , Olivieri Francesca , De Lara Martínez Fernando , Masera Cerutti Omar
Published: December 2022

La precariedad de la vivienda rural abarca, entre otros aspectos, los servicios básicos y su infraestructura, con impacto directo en su habitabilidad y sostenibilidad. Existen numerosos conceptos para definir este tema, pero no un marco conceptual unificador para la vivienda en distintas latitudes. En este artículo se realiza una revisión y sistematización de la literatura sobre el tema de vivienda básica y su sostenibilidad, identificando conceptos y definiciones y llevando a cabo un análisis comparado de tres ejes temáticos: 1) conceptos generales relacionados con la vivienda rural, 2) criterios mínimos que debería tener en cuanto a habitabilidad básica y 3) conceptos relacionados con su sostenibilidad. Se observa un panorama amplio y diverso en cuanto a las características que deben considerarse en cada caso. A partir de la revisión de literatura se propone el término Vivienda Ecotecnológica Básica (VEB), como guía para transitar hacia esquemas deseables de política pública en materia de acceso a vivienda sostenible y servicios básicos en zonas rurales.
Opinión de Enrique de la Mora sobre la crisis de la Arquitectura y la Ciudad Universitaria de México
Authors: Drago Quaglia Elisa María Teresa
Published: December 2022

Opinión de Enrique de la Mora.
Gatos y toxoplasmosis: una visión general
Authors: Rivera-Fernández Norma , Anacleto-Santos Jhony Anacleto-Santos , Carrasco-Ramírez Elba , López-Pérez Teresa De Jesús
Published: December 2022

Aproximadamente, un 50% de los gatos a nivel mundial han sido infectados con Toxoplasma gondii, un parasito apicomplexa de distribución mundial. En la mayoría de los casos, las infecciones son asintomáticas; sin embargo, pueden ocasionar la muerte sobre todo cuando hay complicaciones en el sistema respiratorio. El diagnóstico puede ser un desafío, no obstante, la mayoría de los gatos responden rápida y eficazmente al tratamiento apropiado. La inmunidad que se genera en los gatos a causa de una infección por T. gondii los protege, la mayoría de las veces, contra reinfecciones. En esta revisión se aborda de manera general el curso de la infección en los gatos y la importancia de la contaminación ambiental por ooquistes de T. gondii, su impacto en la salud pública, así como las medidas de control necesarias para disminuir este problema.
Missing Person Identification using Machine Learning Algorithms
Authors: Dhindegave cMs. Kalpana , Mane Ms. Aishwarya , Shelke Ms. Vaishnavi , Borade Ms. Aditi
Published: December 2022

Abstract: From last few years there are many missing person cases reported at police station which are not yet solved. In our project we are solving this issue using various machine learning algorithms like SVM, KNN etc. Basically, using facial expressions, we can train model and depending on matched feature we will get known persons identity. This will generate fast and accurate results. For this we are taking missing person dataset from Kaggle. In output we will get persons identity depending on various classified features like gender, age, geographical location. Results will be forwarded to police for further investigation. In this, there are countless number of people missing every day from which most of them are children. This project proposes a system that would help the police and the public by accelerating the process of searching using face recognition. When a child goes missing, the police can upload the picture of the missing person by taking the latest picture of child or person from the parents when the case is registered and gets stored in the database. In this model, an automated facial recognition system for missing child, person and stored in database. Then classification done like teen,with without marks, with without beard and when person is founded after long years system perform matching with teen,with without marks, with without beard and give results
Spoiler Detection & Early Spoiler Avoidance
Authors: Umaji Kunal , Mutange Vaibhav , Ramana Avanish , Chayal Safal , Sharma Shikha
Published: December 2022

Abstract: Spoiler detection is a major problem of the modern world as the internet is an imperfect entity which is still unable to block the spoiler, thereby killing the joy of a particular person who does not want to know about the particular information about movies, series, book but he gets to know about the important stuff about the things mentioned above before even watching it. So the spoilers that are present on the internet should be blocked. The various Machine Learning algorithm or Natural Language Processing can be used for detecting the spoilers as Machine Learning is the most advanced technology and previous researches have proved the usefulness and importance of theMachine Learning in various fields and in detecting the spoileras well.
A Study on Problems of Teachers in Teaching Mathematics at Higher Secondary Level of Mayurbhanj District, Odisha
Authors: Dalnaik Sagar Kumar
Published: December 2022

Abstract: The key objectives of the research work are to find the problems of teachers in teaching mathematics at higher secondary level. This study was administered on 120 mathematics teachers teaching in different higher secondary schools of Mayurbhanj district, Odisha, India. A self developed questionnaire was used to collect data from higher secondary school mathematics teacher to investigate the problems of teaching mathematics. The finding of the study emphasized that there is a significant difference between high and low experienced mathematics teachers’ attitude towards problems in teaching mathematics at higher secondary level. The outcome of research work revealed that there is no significant difference between male and female mathematics teacher’s attitude towards problems in teaching mathematics at higher secondary level. In addition to this, there is a significant difference in attitude among rural and urban mathematics teachers towards the problems in teaching mathematics at higher secondary level. Further, recommendations were given on the basis of obtained finding of the study.
Medical Insurance Cost Prediction using Machine Learning
Authors: Kulkarni Mukund , Meshram Dhammadeep D. , Patil Bhagyesh , More Rahul , Sharma Mridul , Patange Pravin
Published: December 2022

Abstract: Insurance is a policy that helps to cover up all loss or decrease loss in terms of expenses incurred by various risks. A number of variables affect how much insurance costs. These considerations of different factors contribute to the insurance policy cost expression. Machine Learning( ML) in the insurance sector can make insurance more effective. In the domains of computational and applied mathematics the machine learning (ML) is a well-known research area. ML is one of the computational intelligence aspects when it comes to exploitation of historical data that may be addressed in a wide range of applications and systems. There are some limitations in ML so; Predicting medical insurance costs using ML approaches is still a problem in the healthcare industry and thus it requires few more investigation and improvement. Using the machine learning algorithms, this study provides a computational intelligence approach for predicting healthcare insurance costs. The proposed research approach uses Linear Regression, Decision Tree Regression and Gradient Boosting Regression and also streamlit as a framework. We had used a medical insurance cost dataset that was acquired from the KAGGLE repository for the cost prediction purpose, and machine learning methods are used to show the forecasting of insurance costs by regression model comparing their accuracies
UJI EFEKTIVITAS CANGKANG KEONG MAS (POMACEA CANALICULATA L) SEBAGAI BIOSORBEN DALAM MENYERAP LOGAM TIMBAL (Pb)
Authors: Mauriza Risna , T. Muhammad Ashari , Yahya Husnawati
Published: December 2022

ABSTRAK. Logam berat  Pb merupakan logam berat yang berbahaya bagi kesehatan. Logam Pb dapat merusak sistem organ. Salah satu cara untuk mengurangi adanya kandungan logam Pb dapat dilakukan dengan penggunaan adsorben. Keong mas merupakan salah satu hama bagi aktivitas pertanian. Di dalam cangkang keong mas mengandung banyak kalsium karbonat. Kalsium karbonat dapat dijadikan sebagai adsorben. Penelitian ini bertujuan untuk menguji keefektivan serbuk cangkang keong mas dalam menyerap logam Pb. Penelitian merupakan penelitian kuantitatif. Terdiri dari variabel terikat dan variabel bebas. Variabel terikat terdiri dari konsentrasi 10 ppm timbal dn kecepatan waktu pengadukan 100 rpm. Sedangkan variabel bebas terdiri dari variasi massa serbuk dan waktu pengadukan. Massa serbuk keong mas yang digunakan yaitu 0 gr; 5 gr; 10 gr; 15 gr dan 20 gr dengan variasi waktu pengadukan selama 15 menit dan 30 menit untuk tiap sampel Pb. Tiap Pb yang digunakan dengan konsentrasi 10 ppm. Berdasarkan hasil perhitungan yang diperoleh didapatkan hasil efektivitas serbuk cangkang keong mas dalam menyerap Pb 10 ppm terdapat pada massa 5 gr serbuk cangkang keong mas dan dengan waktu pengadukan 15 menit yaitu sebesar 99,99% dengan hasil penurunan konsentrasi Pb 10 ppm menjadi Pb 0,0001 ppm
Jurnal Review: Pengobatan Klinis Tumor Otak pada Orang Dewasa
Authors: Ghozali Muhammad
Published: December 2022

Peningkatan kasus baru penderita tumor khususnya tumor otak semakin bertambah setiap tahun dan menjadi penyebab kematian tertinggi serta kebanyakan penderita adalah orang dewasa antara usia 55 dan 64 tahun. Tumor otak merupakan kumpulan sel-sel abnormal yang tumbuh secara tidak wajar dan tidak terkendali. Oleh karena itu perlu adanya pengobatan klinis untuk mengatasi permasalahan ini dengan tindakan operasi operasi bedah, terapi radiasi dan kemoterapi. Dalam penelitian ini menggunakan metode deskriptif kualitatif yang bersumber dari berbagai referensi jurnal dan literatur review. Tujuan penelitian ini untuk memberikan pemahaman secara keseluruhan tentang tumor otak dan pengobatan klinis yang harus dilakukan pada orang dewasa. Berdasarkan penelitian ini dapat diperoleh pengetahuan yang mendalam pada tumor otak dan keberhasilan dalam pengobatannya yang terbukti bisa menghancurkan sel-sel tumor dan menambah waktu kelangsungan hidup. Untuk kedepannya, perlu adanya pengembangan mengenai pengobatan klinis baru yang lebih efektif dan lebih baik dari pengobatan sebelumnya, sehingga tidak menimbulkan gejala pasca pengobatan tersebut pada penderita tumor otak terutama orang dewasa. Hal ini perlu didukung dengan pola hidup sehat, sistem imunitas yang baik dan menjaga kesehatan.
EFEKTIVITAS PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DISERTAI PhET SIMULATION PADA POKOK BAHASAN ELASTISITAS DAN HUKUM HOOKE DI SMA
Authors: Ulumiyah Wildatul , Masturoh Lailina , Nuraini Lailatul , L. Syaihun Atiq
Published: December 2022

Penelitian ini bertujuan untuk mendeskripsikan efektivitas model pembelajaran Problem Based Learning disertai PhET simulation terhadap hasil belajar siswa pada materi elastisitas dan Hukum Hooke kelas XI SMA. Penelitian ini merupakan jenis penelitian eksperimen dan dilaksanakan di SMA Muhammadiyah 3 Jember. Populasi penelitian ini adalah semua siswa Kelas XI. Sampel penelitian yaitu siswa Kelas XI IPA 1 dan XI IPA 3 yang berjumlah 16 siswa dan 12 siswa. Teknik pengumpulan data menggunakan tes hasil belajar siswa berupa soal uraian. Hasil penelitian menunjukkan bahwa >75% hasil belajar siswa di atas KKM yaitu sebesar 81,25% pada Kelas XI IPA 1 dan 83,33% pada kelas XI IPA 3. Berdasarkan hasil analisis, maka dapat disimpulkan bahwa penerapan model pembelajaran Problem Based Learning disertai PhET simulation efektif digunakan pada pokok bahasan elastisitas dan Hukum Hooke dalam pembelajaran fisika.
Pengaruh Penambahan Variasi Perekat Kanji Dan Lem Kayu terhadap Kualitas Pot Sabut Kelapa sebagai Media Tanam Ramah Lingkungan
Authors: Muliati Ledi , Lubis Lailatul Husna , Nasution Nazaruddin
Published: December 2022

Media tanam atau pot yang berbahan plastik sering menyebabkan kerusakan pada tanaman  saat proses transplanting. Oleh sebab itu dibutuhkan pot yang mampu mengurangi resiko kerusakan tanaman dan ramah lingkungan seperti pot berbahan sabut kelapa. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan variasi, hasil karakterisasi, dan kualitas optimal yang dihasilkan dari masing-masing variasi dengan komposisi : 50%:50%:0%, 50%:33%:17%, 50%:25%:25%, 50%:17%:33% dan 50%:0%:50%. Penelitian ini menggunakan metode karakterisasi sifat fisis dan mekanis. Hasil pengujian sifat fisis desnitas dengan nilai berkisar antara 0,32 – 0,46 g/cm3, nilai porositas  61,22% - 92,91% nilai daya serap 130,68 - 280,07% dan sifat mekanis meliputi kuat tekan dengan nilai 2,10 MPa – 3,87 MPa. Hasil yang paling optimal terdapat pada sampel A yang memenuhi  berbagai metode karakterisasi yang digunakan.
Valoración cuantitativa de riesgos para proyectos de inversión
Authors: Quirama Estrada Uvenny , Sastoque Zapata Jairo Andrés , Arboleda Jaramillo Carlos Augusto
Published: December 2022

Después del análisis cualitativo para la identificación y severidad de los riesgos de un proyecto de inversión realizado en Medellín, se inició la búsqueda de metodologías de valoración cuantitativa, a fin de tomar decisiones a partir de información monetaria, facilitando el reconocimiento de acciones que permitan la atención de los riesgos evaluados y el desarrollo de la etapa preoperativa y operativa. Es por ello que el presente documento busca exponer las metodologías de valoración cuantitativa del riesgo, reflejando los costos asociados a la ocurrencia de los riesgos para facilitar el proceso de cuantificación del proyecto actual y demás proyectos de inversión de orden público y privado. Dentro de los resultados y conclusiones expuestos, se evidencia la importancia de la data a fin de presentar variables independientes que den soporte a la cuantificación y el ajuste al Capex y Opex para la atención de los riesgos asociados a la inversión u operación.
Images of Birds in the History of Portuguese Poetry: Features of Metaphorics
Authors:   Plekhanov Russian University of Economics, Kuteva Marina V. ,   Moscow State Linguistic University, Makhortova Varvara A. ,   Moscow State Linguistic University
Published: December 2022

The article offers a review regarding to the metaphorical reinterpretations of lexemes relating to the semantic field “bird” in the best Portuguese poems, whose works are distinguished by continuity and are based on the poetic accomplishments and achievements of those word artists who created their verses in previous eras. The most consequential influence on the moods and figurative system of followers had Francisco Sa de Miranda and Luis de Camoes, which are also briefly described in this work. The results of the study conducted using a complex technique (methods of contextual, semantics and stylistic analysis) testify to the wide figurative and metaphorical potential of ornythonymic vocabulary. In Portuguese poetry, the image of birds is used to convey a variety of meanings, such as “poems,” “creativity,” “I, my soul,” “love,” “hope,” “longing,” “struggle,” as well as “freedom” (bird in general) and “despotism” (vulture).
A New Design method of LQR Control of Single-Phase Grid-Tied Inverter With LCL Filter
Authors: Yifeng Shao , Yin Quan , ju binlei , Wang Qingyi
Published: December 2022

The design of Inductance–capacitor–inductance (LCL) grid-connected
inverter based on linear quadratic regulation (LQR) has been studied
widely, while the performance of the controller is not analyzed in these
designs. In this paper, a new design method of LCL is discussed in
detail. Different from the existing method parameter of the LQR
controller is obtained according to the pole assignment. Besides,
parameters of LCL-type filter are designed in term of the
characteristics of the new closed-loop system. Further, the robustness
of the system is analyzed separately. At last, various performances of
the new design system are verified by simulation. The suppression
ability of the system for switching harmonics is verified in the rated
state and in the case of power change. The performance including better
robustness and better resistance to weak grid comparison of the
traditional design is also shown in this paper.
About Roy Glauber
Authors: Friedrich Bretislav , Kleppner Daniel , Herschbach Dudley
Published: December 2022

We recount the life, work, and legacy of the theoretical physicist Roy
Glauber (1925-2018). Admitted to Harvard at age sixteen, called upon to
participate in the Manhattan Project at age eighteen, and appointed to
the Harvard Physics faculty at age twenty-nine, Glauber is credited with
seminal contributions to three separate fields of physics: nuclear
scattering, statistical physics, and foundational work in quantum
optics, which earned him the 2005 Nobel Prize in Physics. Over decades,
Glauber was also a dedicated teacher of high-school, college, and
graduate students. His pedagogical gifts are reflected in his lucid
papers that read as if they were written yesterday.
Neonatal volvulus of the small bowel around a total persistent omphalomesenteric canal: an exceptional finding.
Authors: Cheikhrouhou Taycir , Mahdi Ben Dhaou , rahma chtourou , Chiraz Regaieg , Hbaieb Manar , Thabet Afef Ben , Mohamed zouari , Hentati nedia , Mhiri Riadh
Published: December 2022

Total persistent omphalomesenteric canal as a cause of small-bowel
obstruction is an exceptional finding. A neonate presented with
occlusion due to volvulus of the small bowel around a total persistent
omphalomesenteric canal. Remnants of the duct were successfully resected
and the postoperative course was uneventful.
On the design considerations of solid-state power amplifiers for satellite communications: a systems perspective
Authors: Tutgun Rasit , Öncü Emrah , Aktas Emre
Published: December 2022

Conventional solid-state power amplifier (SSPA) design approach isolates
RF design from communication theory. In this paper, a unified SSPA
design approach is proposed which optimizes SSPA parameters (bias
voltage and input RF signal power) to minimize total DC power
consumption while satisfying received SNR constraint specified by the
link budget. The effect of SSPA nonlinearity is quantified by the error
vector magnitude measured at its output and the corresponding received
SNR degradation is analyzed. Using the quantitative metrics for received
SNR, it is possible to evaluate highly nonlinear SSPA classes such as
Class-B or deep-Class AB which are normally not considered in
conventional SSPA design approach to be used in satellite communication
applications.
Stawki podatku VAT a zużycie środków ochrony roślin i nawozów mineralnych w krajach Unii Europejskiej w obliczu wyzwań zrównoważonego rozwoju
Authors: Jarczok-Guzy Magdalena
Published: December 2022

Europejski Zielony Ład oraz koncepcja zrównoważonego rozwoju wymagają od rolników znacznego zmniejszenia ilości środków ochrony roślin (w tym pestycydów) używanych w swoich gospodarstwach rolnych. Zmniejszenie stosowania tych środków jest kluczowym elementem kilku celów zrównoważonego rozwoju. Jaką rolę w tym aspekcie mogą odgrywać podatki? Czy mogą one się przyczynić do zmiany zachowań rolników? Te pytania stały się inspiracją do przeprowadzenia badania, którego celem będzie sprawdzenie zależności pomiędzy stawkami podatku VAT na środki ochrony roślin i nawozy mineralne oraz dynamiką zakupywanych ilości tych środków we wszystkich krajach Unii Europejskiej. Dane do analizy pozyskano ze strony Komisji Europejskiej oraz międzynarodowych raportów dotyczących rolnictwa. Przeprowadzono analizę statystyczną polegającą na badaniu rozkładu zmiennych, obliczeniu wskaźników korelacji oraz dynamiki. Podczas analiz wykorzystano program Statistica i arkusz Excel. Większość krajów Unii Europejskiej stosuje stawki preferencyjne podatku VAT na nawozy mineralne. Analiza dynamiki sprzedawanych pestycydów wykazała w większości krajów Unii Europejskiej trend spadkowy.
Influence of Changes in the Prices of Fertilizers and Fuels on the Profitability of Production of Selected Agricultural Crops
Authors: Weremczuk Arkadiusz , Malitka Grzegorz
Published: December 2022

The prices of raw materials necessary for production play an important role in the production decisions of farmers, and thus in shaping the level of supply of agricultural raw materials. The constant increase in the prices of raw materials for production increases its costs. Therefore, it should be noted that the rising prices of fuel and fertilizers affect the decisions and profitability of plant production. In connection with the above, this study attempts to indicate the impact of changes in fertilizer and fuel prices on the profitability of production of selected agricultural crops in Poland. The paper uses secondary data on the price level of fertilizers, fuels and selected agricultural products, as well as the structure of their production costs. Based on the sensitivity analysis, the potential impact of the increase in fuel and fertilizer prices on the profitability of the production of selected species was indicated. The results showed that the increase in the prices of the above-mentioned raw materials can significantly affect the economic efficiency of the production activity.
Global solutions for a general predator-prey model with prey-stage structure and cross-diffusion
Authors: Li Xiaojuan , Xu Shenghu
Published: December 2022

In this paper, a cross-diffusion predator-prey model with general functional
response and stagestructure for the prey is analyzed. The global existence
of classical solutions to the system of strong coupled reaction-diffusion
type is proved when the space dimension less than ten by the energy
estimates and the bootstrap arguments. The crucial point of the proof is to
deal with the cross-diffusion term and the nonlinear predation term .
Complex symmetry and normality of Toeplitz composition operators on the hardy space
Authors: Gupta Anuradha , Malhotra Aastha
Published: December 2022

In this paper, we investigate the conditions under which the Toeplitz
composition operator on the Hardy space H2 becomes complex symmetric with
respect to a certain conjugation. We also study various normality conditions
for the Toeplitz composition operator on H2.
Asymptotic behaviour of negative eigenvalues of an operator differential equation
Authors: Bakşi Özlem
Published: December 2022

In this work, we find the asymptotic formulas for the sum of the negative
eigenvalues smaller than ?? (? > 0) of a self-adjoint operator L defined by
the following differential expression ?(y)=?(p(x)y?(x))??Q(x)y(x) with
the boundary condition y(0) = 0 in the space L2(0,?;H).
Strong Whitney convergence on bornologies
Authors: Chauhan Tarun , Jindal Varun
Published: December 2022

The strong Whitney convergence on bornology introduced by Caserta in [9] is a
generalization of the strong uniform convergence on bornology introduced by
Beer-Levi in [5]. This paper aims to study some important topological
properties of the space of all real valued continuous functions on a metric
space endowed with the topologies of Whitney and strong Whitney convergence
on bornology. More precisely, we investigate metrizability, various
countability properties, countable tightness, and Fr?chet property of these
spaces. In the process, we also present a new characterization for a
bornology to be shielded from closed sets.
Additive properties of central Drazin invertibility of elements in a ring
Authors: Li Wende , Chen Jianlong
Published: December 2022

For two central Drazin invertible elements a and b of a ring, we first prove
that a + b is central Drazin invertible under the condition ab = 0. Then we
establish the relation between central Drazin invertibility of a + b and 1 +
acb, when a2b = aba and b2a = bab hold, and also when ab = ba is valid. When
a and b are two central group invertible elements, additive properties of
central group inverses are studied under the condition ab = ba and also abbc
= baac.
How Singapore Adolescent Students Cruise the Expanding School Art Milieu
Authors: Kan Koon Hwee
Published: December 2022

Stories and visuals of Singapore secondary students reflect the ways they negotiate multiple layers of meanings as they experience artistic learning inside and outside the school setting. The photocollage-cum-photoessay representation of one miniportrait features the unique voice of an adolescent wrestling with learning conventional art skills and his schooling in advanced technology. His voice resonates with others regarding balancing personal aspirations with institutional demands and illustrates the failure of prescribed national art curricular objectives to encompass all aspects of adolescents’ artistic learning. A key finding reveals students integrating popular art outside school with their artistic creation, understanding, and appreciation of fine artworks inside the school curriculum. Their experience demonstrates a blend of reality and hyperreality in the contemporary image-saturated world.
Attitudes of Preservice General Education Teachers Toward Art
Authors: Miraglia Kathy Marzilli
Published: December 2022

This qualitative study explored histories, perceptions, and attitudes of 18 preservice generalist teachers and how these may have contributed to their anxiety in making and teaching art. Data were collected through interviews, a background questionnaire, student reflective journals, and a researcher’s observation journal. Through grounded theory, the concept of low confidence/anxiety was developed to explain seven identified themes: teaching art, fear of drawing, understanding art, unrealistic expectations, judgments, making the grade, and teacher expectations. Contributing factors to anxiety in art making included lack of art knowledge, fear of making mistakes, and negative responses from peers and/or former teachers.
Poking Holes in the Oil Paintings: The Case for Critical Theory in Postmodern Art Museum Education
Authors: Tapia Juliet Moore
Published: December 2022

This article discusses the theory and practice of transformative postmodern museum education, presented as a necessary response to contemporary society in which multiple perspectives have made modernist philosophies and practices of museum education largely irrelevant. I make a deconstructivist analysis of the history of museum education by describing modernist notions of museums and their educational roles. I then propose a definition and explication of a pedagogy of postmodern art museum education that casts the project of art education and the museum within frameworks of challenge, inquiry, and resistance that stimulate interpretations of art to take place in the wider context of everyday life.
University Faculty as Intellectual Entrepreneurs: Vision, Experimental Learning, and Animation
Authors: Bresler Liora
Published: December 2022

Focusing on intellectual entrepreneurship, I suggest in this article that entrepreneurial qualities can enhance faculty’s roles in cultivating high-impact research, teaching, and service. Academic intellectual entrepreneurship involves vision and creativity in exploring, identifying, and creating opportunities; a process of experiential learning including craft and learning from failures; and team leading and animation in working to render a vision into an entity that interacts with others’ experiences.
Arts-Based Educational Research as a Site for Emerging Pedagogy and Developing Mentorship
Authors: Guyas Anniina Suominen , Keys Kathleen
Published: December 2022

Highlighting mentoring roles while relaying accounts of arts-based educational research (ABER) practice, we present a personal and conceptual narrative of emergent epistemological and pedagogical understandings encountered during dissertation journeys. Juxtaposing narratives with dialogue, we share postresearch reflexive work, and present a praxis-oriented discussion of ABER. We discuss implications for art education pedagogy, research, and leadership in the context of professional and personal development fostered through mentorship during this transformative ABER experience.
How Singapore Adolescent Students Transform Their Secondary School Art Experience
Authors: Kan Koon Hwee
Published: December 2022

Singapore teenagers draw on improvised humor, erudite playfulness, and enculturated mindfulness to transform school art into a potential dialogic space to construct meanings, develop autonomy, and enhance learning. Digital animations created in school become a way to integrate private concerns and personal interests, translate public and social agendas, resolve complex technical and formal problems, and discharge transgressive fantasy as age-appropriate curiosity. Based on the juxtaposition of students’ stories and visuals, research findings also illustrate hidden aspects of adolescents’ artistic schooling and demonstrate how advanced technology art offers them opportunity to negotiate existential angst and lived experiences.
You Are and You Ain’t: Story and Literature as Redneck Resistance
Authors: Ferrence Matthew
Published: December 2022

Appalachian identity is often portrayed as an either/or proposition in popular perception, while at the same time backwoods stereotypes stick hard to that identity. In this essay, I offer my own complicated Appalachian narrative alongside analysis of the literary and social positions of Fred Chappell and Silas House to discuss how contemporary individuals talk back against stereotype and expectation. I argue that an ideological construct of hillbillies seeks always to hold Appalachia in a frozen state of backwardness, which serves certain national narratives of power. By talking back, writers like Chappell and House break those narratives, work to defuse the political capital of stereotype, and ease limitations on what constitutes authentic Appalachian identity.