bluuebunny/crossref_metadata_2025 huggingface dataset:
QCOB: a novel QPSK coherent optical OFDM modulation technique for mitigation of fiber impairments
Authors: Kaushik Vikas , Saini Himanshi
Published: November 2022

Modern optical communication heavily relies on coherent optical orthogonal frequency division multiplexing (CO-OFDM) modulation. But the usage of optical OFDM for fiber optic communication is still constrained in comparison to other modes of communication like visible light communication (VLC) and wireless communication due to a number of issues such as various sorts of fiber impairments including dispersion and attenuation. In this research paper, a novel optical OFDM modulation technique has been proposed. It is quadrature phase shift keying (QPSK) CO-OFDM modulation with Bessel optical filter in fiber optical link and is named as QCOB. This modulation technique works for optical fiber transmission. Its testing has been carried out for parameters like bit error rate (BER) and quality-factor (Q-factor) over a range of fiber length, fiber dispersion coefficient and input power. This modulation employs coherent optical OFDM with QPSK for subcarrier modulation. The optical link utilizes a Bessel optical filter. Improved results have been achieved over conventional QPSK CO-OFDM (QCO). The obtained results demonstrate the superiority of the QCOB technique in terms of performance enhancement and fiber impairment reduction. In comparison to the QCO technique, the BER performance (reduction in BER) of the QCOB technique shows an improvement of around 7.4, 100, 14.4, 46.4 and 3.4% for dispersion coefficient values of 10, 20, 30, 50 and 100 (in ps/nm-km), respectively.
Authors of Slender Means? Female Authorship in Mid-Twentieth-Century British Fiction
Authors: Berensmeyer Ingo
Published: November 2022

This article examines women writers as characters in British novels and stories by women writers from the 1940s to the early 1960s. In works by Muriel Spark, Elizabeth Taylor, Mary Renault, and others, there is a reflection on the social and artistic positions available to female authors. Given the gender segregation of the literary field at mid-century, in which ‘womanly’ writing was associated with the commercial form of romance and ‘manly’ writing with seriousness, the predicament of female authorship is rarely explored in fiction. But when it is, fictional women authors point up the constraints and limits of a ‘feminine’ literary aesthetic in illuminating ways. The article reconstructs how mid-twentieth-century British women authors thought about the act of writing, how they viewed the fields of literary creation and production, and which narrative strategies they used to negotiate this difficult terrain.
Crossing the Walls: Reading Doris Lessing’s The Memoirs of a Survivor as a Hopeful Dystopia
Authors: Garić Vanja Vukićević , Živković Predrag
Published: November 2022

Lessing’s short novel The Memoirs of a Survivor encapsulates all the dominant narrative, political, and philosophical preoccupations of its prolific author. Straddling the genres of socio-realistic dystopia and post-apocalyptic fantasy, it self-consciously reflects on many questions relevant to contemporary readers. Drawing on the main premises of postmodern poetics, particularly on its ontological concerns, and on more recent theories about new ‘critical dystopias’ in literature, this article points to the multi-layered utopian aspects present at different levels of the text. Moreover, applying philosophical and sociological concepts of Jean Baudrillard to the interpretation of Lessing’s symbolic and narrative strategies, such as his notion of the alienation of death in capitalist society, the article shows how this novel can be read not only as a critique of materialist culture and a study of deprivation and isolation with serious psychological and civilizational consequences, but also as a hopeful play with ontological borders implied in the imaginative rethinking of our private and shared realities.
Heterotopic Spaces as Pathways to Discovering Transcultural Self in Brian Castro’s Shanghai Dancing and Birds of Passage
Authors: Savitskaya Anna
Published: November 2022

This essay seeks to explore the role of heterotopic spaces in the formation of transcultural self and belonging in Brian Castro’s novels Shanghai Dancing and Birds of Passage. Drawing on Michel Foucault’s initial idea of heterotopia, which relates to fictional representations of semi-mythical places, my argument aims at investigating the process of discovering one’s cultural identity within heterotopic spaces, the spaces capable of juxtaposing elements incompatible in time or character. Focusing on textual heterotopias and heterotopias of memory in literary texts, this work examines how Brian Castro employs this concept to depict the intricacies of identity formation in his narratives. Thus, I set out to examine how heterotopic spaces in these two narratives open up a path towards understanding transcultural selfhood.
Improvements in Test Procedure and Data Reduction for the Borehole Erosion Test
Authors: Shidlovskaya Anna , Bahmani Mostafa , Briaud Jean-Louis , Chen Hamn-Ching
Published: November 2022

As the use of the borehole erosion test (BET) is increasing worldwide, lessons are being learned and procedures are being updated and refined. This article presents new developments including a more detailed field-testing procedure and recommendations, more advanced numerical simulations with the mesh morphing technique, an expanded data reduction process that now includes the computation of the borehole wall shear stress, more comparisons with the erosion function apparatus (EFA) laboratory test, the difference between using water and drilling mud, and advantages and limitations of the BET. The numerical simulations give the velocity and shear stress fields on and near the borehole wall associated with the water flow. They show how the bottom BET is like an in situ jet test while the lateral BET is a vertical hole erosion test. They also show that the bottom two diameters of the borehole flow do not develop a steady shear stress on the wall and should not be used. The data reduction process is expanded to include the profile of the shear stress on the borehole wall using simplifying assumptions. The comparison between the BET and the EFA indicates that the BET gives a soil erosion resistance higher than the EFA does; this may be attributed to sample disturbance for the EFA and testing under favorable in situ stresses for the BET. Two parallel BETs, one with water and one with drilling mud, shows 10 % more erosion with water than with the drilling mud. The main advantage of the BET is soil erodibility profiling through the borehole radius versus depth profile. The BET is not as useful to determine the erosion functions of the soil stratigraphy but more useful in identifying which layers are more susceptible to erosion. The BET profile helps to identify the location of samples for erosion laboratory testing.
Robot-Assisted Gravity Offloading Testing of Aerospace Structures
Authors: Lopes Pedro R. , Moreira Luís , Lopes Ricardo , Lopes António M.
Published: November 2022

The demand for testing aerospace structures on Earth before they are launched into space has led to the development of equipment that is able to simulate orbit conditions, namely zero gravity. Several passive solutions have been proposed to perform offloading testing on Earth. However, they present limitations and lack the flexibility normally required by the complexity of the pathways. Active zero gravity emulation systems have been developed to mitigate the difficulties of the passive ones. Moreover, the emergence of robotic arms with the ability to perform complex and easily reprogrammable motion and force-controlled trajectories has opened the possibility of creating robot-based gravity compensation systems. This paper proposes and evaluates a solution for the gravity offloading testing of space devices based on currently available industrial robots. This solution takes advantage of the functionalities of collaborative robots, namely built-in force controllers, together with custom auxiliary subsystems. A setup was arranged to allow the communication between the robot controller and a computer running an internet of things (IoT) platform based on Node-RED so as to connect and control all components of the offloading system. Multiple robot control techniques were designed and tested based on several approaches employing impedance control functionalities and sensing data to create a closed-loop system. The results obtained are within the validation criteria, creating conditions to affirm for the application in question that the gravity compensation was achieved with success using the robot.
Evaluating the timing of insecticide application to manage barley yellow dwarf virus and yield in winter barley
Authors: Walsh L. E. , Lacey S. , Doyle D. , Gaffney M. T. , Mc Namara L.
Published: November 2022

Barley yellow dwarf virus (BYDV) is an important viral disease of grain crops worldwide and a major cause of yield loss. The risk periods for BYDV infection coincide with milder temperature that prolongs aphid flight and facilitates viral transmission through primary and secondary aphid movement in the crop. Secondary aphid movement is associated with greater BYDV spread in winter cereals. A critical component of BYDV management is therefore delaying sowing of winter cereals and correctly timing insecticide application to maximise crop protection. Previous research in Ireland considered insecticide timing in early (September) and late (October onwards) sown cereals. Early research did not consider action thresholds around temperature, aphid flight and risk of secondary spread. This research set out to understand the optimal timing of insecticide application in October sown winter barley to reduce BYDV infection and yield impact. A critical temperature of 3°C was used as a threshold for aphid development that leads to movement and BYDV spread, and insecticide treatments were applied to the crop at predictable intervals in relation to temperature. Results show that BYDV symptoms and yield are affected by spray time, location and year, although only significant with regard to the reduction of BYDV symptoms. For both BYDV symptoms and yield, there was a significant difference between untreated (control) plots and “early” and “late” applications of insecticide, again more notable for BYDV symptoms than yield. This work indicates the value of optimising a single insecticide spray for control of October sown cereals and supports decision-making in the management of cereal crops.
Reforma de la formación inicial de docentes en clave ecosocial. La pandemia como maestra
Authors: Susinos Rada Teresa , Romero Morante Jesús , Ceballos López Noelia , Saiz Linares Ángela
Published: November 2022

El actual panorama mundial ha sido descrito por la comunidad científica como un momento de emergencia a la vez ecológica y social. En este escenario, se plantea una reforma de la profesión docente cuyos principios fundamentales se bosquejan someramente en el Documento de las 24 propuestas de reforma para la mejora de la profesión docente del Ministerio de Educación. Tomando como referencia al citado documento, en este escrito tratamos de reflexionar y compartir algunas ideas sobre cómo podría ser una nueva profesionalidad docente consciente y corresponsable en el trabajo de aliviar las profundas tensiones ecosociales que vivimos. Y lo hacemos utilizando todo lo aprendido en nuestra docencia universitaria en nuestros años de experiencia, con una especial atención a estos dos últimos cursos, en los que hemos implementado cambios profundos en nuestra docencia impelidos por la necesidad y la urgencia de los acontecimientos. Por eso, nuestra primera propuesta es la de no desechar todo lo aprendido en este tiempo y analizar qué aspectos de las nuevas prácticas queremos conservar y a qué lugares no nos gustaría regresar una vez superada la pandemia. En este artículo, nosotros proponemos cuatro elementos para una nueva profesionalidad que, creemos, debieran constituir ejes del debate sobre los nuevos planes de la formación de docentes: el cuidado, la experimentación y el profesional reflexivo, la colaboración y la confianza, y el diálogo como hábitat para el trabajo docente.
Calidad docente y calidad de la docencia: comentarios al documento de las 24 medidas para la mejora de la profesión docente
Authors: Zabalza Beraza Miguel Ángel
Published: November 2022

El Ministerio de Educación y Formación Profesional de España (Enero 2022) ha hecho público un documento con 24 propuestas de reforma para la mejora de la profesión docente. El documento, tras una serie de consideraciones genéricas sobre el papel del profesorado y su incidencia en la calidad de la enseñanza, propone 24 medidas de mejora que somete a debate de profesionales y expertos en dicho ámbito. Las medidas propuestas aluden a los temas centrales de la formación docente: el acceso a los estudios, la formación inicial tanto para las etapas de Infantil y Primaria como para de Secundaria, la formación permanente, el acceso a la profesión, la formación específica vinculada a las especialidades y la carrera docente. En su conjunto, las medidas propuestas y la filosofía pedagógica que subyace a las mismas pretende configurar un nuevo “modelo de profesión docente”. Este artículo trata de analizar críticamente ese modelo de profesional desde una perspectiva centrada en una visión más sistémica e institucional de la docencia, construida desde los ejes de la colegialidad y el trabajo en equipo.
Pentaceraster cumingi, nuevo registro de estrella de mar (Asteroidea) para el Pacífico salvadoreño
Authors: Ramos-Cáceres María Fernanda , Segovia-Prado Johanna
Published: November 2022

El registro de biodiversidad es importante para cualquier región. En este trabajo, El Salvador incorpora a Pentaceraster cumingi a su riqueza marina. El objetivo fue documentar su presencia en el Pacífico salvadoreño. Con base en material fotográfico, se evidencia que existe P. cumingi en un arrecife nacional desde el 2017. Es una especie vulnerable a quedar atrapada en redes de arrastre. Resulta necesario conocer las densidades y el rol ecológico que desempeña.
Preparing for 2023: Home and Residence Services
Authors:   American Academy of Pediatrics
Published: November 2022

This article reviews the following:

Changes to evaluation and management (E/M) code categories for visits provided in residential settings. Codes will be selected based on either the level of medical decision-making (MDM) or on the physician or other qualified health care professional’s (QHP’s) total time on the date of the encounter. Changes to reporting care plan oversight for a patient who resides in a home or residential setting.
Transtornos alimentares na infância
Authors: Teixeira Victor Vinicius Silva , Cruz Edson Junior Silva da
Published: November 2022

Transtornos alimentares são um tema preocupante em qualquer fase de desenvolvimento humano. Essa revisão da literatura teve o objetivo de analisar as produções científicas quanto a transtornos alimentares em crianças, com a busca de artigos publicados entre 2014-2019 nas bases de dados Scielo, Pepsic, BVS (Lilacs) e Periódicos CAPES, utilizando os termos “childhood” AND “eating disorder”, “child” AND “eating disorder”, “children” AND “eating disorder”, “childhood” AND “eating difficulty”. 43 artigos foram selecionados após a aplicação dos critérios de exclusão e inclusão. Os resultados indicaram três tópicos principais discutidos nos estudos: a forma como os cuidadores influenciam na alimentação de crianças, fatores emocionais e psicológicos que influenciam nos transtornos alimentares, e o tratamento de crianças com transtornos alimentares. Concluiu-se que o tema ainda é pouco estudado e o cenário internacional é referência em publicações.
Uruguay en el fin del ciclo progresista
Authors: Cardarello Salvador Antonio , Luján Diego , Schmidt Nicolás
Published: November 2022

Este artículo analiza el ciclo electoral de 2019, en sus tres instancias: elecciones primarias, primera vuelta presidencial con elección parlamentaria, y segunda vuelta presidencial. Se sostiene que los resultados electorales trajeron cambios importantes en el sistema político. El cambio más trascendente es la alternancia en el gobierno, el Frente Amplio dejó su lugar a una coalición de partidos encabezada por el Partido Nacional, provocando un cambio en el formato de gobierno, pasando de gobiernos de partido mayoritario a uno de coalición. A su vez, en un sistema de partidos con alto nivel de institucionalización, la irrupción de nuevos agentes elevaron los niveles de fragmentación y de volatilidad. Alterando la fisonomía del sistema de partidos y conformando una dinámica de dos bloques enfrentados.El trabajo se divide en tres secciones. Primero se describe el proceso de nominación de las candidaturas presidenciales en las primarias. Luego se analiza la competencia inter partidaria en las elecciones parlamentarias y presidenciales. Finalmente se evalúan las principales características que tuvo el proceso electoral a la luz del marco institucional establecido por la reforma electoral de 1996.
Retomando o futuro
Authors: Talone Vittorio da Gamma
Published: November 2022

Neste artigo, por meio de uma pesquisa qualitativa envolvendo observações e entrevistas, analiso dois “grupos de apoio” na cidade do Rio de Janeiro que assistem a pessoas que tiveram um grave contato com a morte, direta ou indiretamente. Partindo de uma abordagem sociológica pragmática, proponho um modelo específico de reconexão de passado e futuro para pessoas em luto que almejam retomar suas narrativas biográficas para além da experiência de vitimização. Assim, exploro como os grupos de suporte analisados buscam “dessingularizar” as experiências pessoais de contato com a morte, promover a troca de “energias emocionais” (pela empatia) e ressignificar “lembranças dolorosas” no intuito de mostrar o futuro como uma temporalidade possível para os assistidos. Mostro como pode ser reconstruído um poder íntimo de ação visando efetivar uma definição de situação não ligada à experiência extrema, mas almejando recuperar a potência agêntica sobre a própria vida.
Estudo de caso
Authors: Caliari Juliana Cássia de Souza , Campos Katia Campos
Published: November 2022

Este estudo teve o objetivo de conhecer o perfil dos concluintes do ensino médio (EM) de uma escola ofertante da modalidade Educação de Jovens e Adultos (EJA) e levantar informações a respeito das dificuldades em Língua Portuguesa e em Matemática, de forma a obter informações capazes de indicar quais conteúdos devem ser considerados para o desenvolvimento de metodologias. A elaboração deste trabalho contou com pesquisa em arquivo de erros que identifiquem os conteúdos de maior dificuldade em ambas as disciplinas; uso de Coeficiente de Contingência de Pearson para testar se a diferença entre questões certas e erradas são significativas. Percebeu-se na população, do total de 100 alunos pesquisados, que 49% dos alunos levam entre dois a cinco anos para finalização do ensino fundamental II e 82% levam um ano para finalização do EM. A maior parte dos alunos (64%) concluiu ambas as disciplinas em menos de um mês. Percebeu-se que as dificuldades encontradas em Língua Portuguesa foram relacionadas principalmente ao conteúdo Classe de Palavras, e em Matemática foram os conteúdos de Relações Trigonométrica, Álgebra e Geometria Espacial. Esses resultados tornam propício o desenvolvimento de metodologias, como a elaboração de videoaulas, organizadas por um assunto, com exercícios e exemplos de aplicação.
اكتساب اللغة العربية عند الطلبة في معهد أندلوسيا
Authors: Ferdiansyah Yogi
Published: November 2022

الهدف من هذا البحث هووصف اكتساب اللغة العربية عند الطلبة فى معهد أندلوسيا وحصول على معنى بيانات البحث. فمنهجية البحث بحث إتنوغرافى وهو يريد أن يصف عادات طبيعية فى اكتساب اللغة العربية عند الطلبة. ومصدرالبحث هو المخبرون الذين يعرفون اكتساب اللغة العربية بالملاحظة والمقابلة،ثم تحليل البيانات تحليل وصفى. ونتائج البحث هي وجود اكتساب اللغة العربية في هذا المعهد يتكون من داخيلية وخاريجية  يجعل الطلبة يتكلمون بالعربية وبيئة الفصول الدراسية و مميزات من عملية اكتساب اللغة العربية فيه يوجد بيئة اللغة العربية وممارسة اللغة العربية تساعد الطلاب في اكتساب اللغة العربية.المشكلات فيه الطلاب من المدرسة العامة لا يفهمون المفردات والتركيب باللغة العربية التى تستعمل فيه وهم يحتاجون الى الجهد القوي لفهم اللغة العربية. وخلاصة البحث أن اكتساب اللغة العربية عملية جيدة لأن يجعل الطلبة يدربوا ويمرنوا مهارة الكلام العربية
تطوير مهارة الكلام للمدرسة الثانوية الإسلامية الحكومية 5 سولوك الجنوبية
Authors: Yunita Siska Guspalia
Published: November 2022

الهدف من هذا البحث تطوير مهارة الكلام (الحوار) حتى أصبحت صحيحة لتلاميذ المدرسة الثانوية الحكومية 5 سولوك جنوبية. فمنهجيةالبحث بحث تطويرى عن تصميم مادة مهارة الكلام فى المدرسة الثانوية الإسلامية سولوك الجنوبية بخمس خطوات أي تحليل الاحتياجات، و مشروع  التطوير، و تطوير تصميم المنتجات، واختبار منتجات التطوير وإنتاج البحث التطويرى حتى تصبح صحيحة وجيدة. فوجد البحث  وأصبحت نتائج البحث  تطوير تصميم مادة تعليم مهارة الكلام صحيحا ومناسبا لتلاميذ المدرسة الثانوية الإسلامية الحكومية 5 سولوك النتوبية وهي تصميم مادة تعليم مهارة الكلام نتيجة صحيحة أي وجود زيادة خاصة فى تصميم مادة مهارة الكلام وهي موضوع الدرس والمفردات و التدريبات. وهذا التطوير يوافقه الخبيرا اللغة العربية  وهما يقران أن تطوير تصميم مادة تعليم مهارة الكلام مناسبة بحاجات التلاميذ فى مهارة الكلام. والخلاصة  أن تطوير مهارة الكلام لتلاميذ المدرسة الثانوية الإسلامية الحكومية 5 سولوك الجنوبية مناسبة وصحيحة.
Al-Itqân Bimakhâriji Al-Hurûf Al-‘Arabiyah Wa ‘Alâqatuhu Bi Mahârah Al-Qirâ’ah Ladâ Talâmidzi Al-Madrasah Al-‘Āliyah Al-Muhammadiyah Lakitan
Authors: Putri Marshy Delin , HD Jarir NA , Bustami Hafni
Published: November 2022

The main problem in this research is how the relationship between mastery of Arabic alphabet makhorij with reading skills of eleventh grade students in MA Muhammadiyah Lakitan Pesisir Selatan. This study aims to determine the results of students' Arabic makhorijl mastery, the results of students' reading skills, and the relationship between Arabic makhorij mastery and eleventh grade students' reading skills. This study is quantitative with the type of correlation. The results of this study are the first grades of the results makhorij abilities of eleventh grade students', the second grades of the results reading skills of eleventh grade students' and the third is the results of the relationship between makhorij abilities and reading skills the eleventh grade students' in  MA Muhammadiyah Lakitan
The Influence of Padlets in Learning Writing Skills on Students of Madrasah Tsanawiyah 2 Payakumbuh
Authors: Monika Helhadiani
Published: November 2022

This study aims to knowing the influence of padlets in learning arabic writing skills on students of madrasah tsanawiyah 2 Payakumbuh.  The research method used is quantitative study approach that is true experiment method, and data are presented in the form of numbers and analyzed by statistical methods, The method of data collection in this study was to use an writing test by using difference analysis. and the research sample consisted of two groups, namely the control group and the experiment group, each consisting of 20 students, all of them is eighth grade students of Madrasah Tsanawiyah 2 Payakumbuh. This study reached the results, padlet had an effect on student’s arabic writing skill. This can be seen from the average value of the hypothesis thes whose result is 0,02 less than the value of sig.0,05 indicates that this padlet has an influence on learning arabic writing skil for eighth grade students of Madrasah Tsanawiyah 2 Payakumbuh
The Correlation between students' reading skill and memorizing al-Qur'an in MTs Mu'allimin Muhammadiyah Tahfizhul Qur'an
Authors: Frisia Lusi
Published: November 2022

The aim of this research is to find out the ability of the Arabic reading skill and the ability to memorize the Qur’an among the eighth grade students in MTs Muallimin Muhammadiyah Tahfizhul Qur'an Sawah Dangka. The method of this research is descriptive and the data are shown in numbers and analyzed by the statistical method. In collecting data for this research use oral test, and sample of this research is about 30 eighth grade students in MTs Muallimin Muhammadiyah Tahfizhul Qur'an Sawah Dangka. The findings of this research are; 1) as the level of Arabic reading skill in the eighth grade is "good". 2) the level of ability to memorize the Qur’an in the eighth grade is “good.” 3) There is a strong relationship between Arabic reading skill and memorizing ability of eighth grade students in MTs Muallimin Muhammadiyah Tahfizhul Qur'an Sawah Dangka. The rtabel degree of freedom at 5% is 0.361. At a significant level of 5%, it can be seen that the value of rxy is greater than the value of rtable, i.e. 0.616 > 0.361, so that in this induction the alternative hypothesis (Ha) is accepted and the null hypothesis (Ho) is rejected.
Tahlil kitab Syarah Mukhtasharun Zidan Ta'lifu As- Said Ahmad Zaini Dahlan
Authors: Hasibuan Syahriana
Published: November 2022

Textbooks are informational materials or educational materials in the form of supporting books for learning the Arabic language. Syarah Mukhtashor Jiddan Ta’lifu As- Said Ahmad Zaini Dahlan is searches for the rules and purpose, and this book has the statement in detail. A very short explanation book that has the characteristics of the soul. It uses easy language (everyday language), simple examples, and complete parsing.The research background of this thesis is one of the success factors in teaching the subject, and the teacher must choose the good material or the book that is good in his teaching. The method used in this research is desk research. The method used is the descriptive analytical method. The tools for collecting information are observation, documentation and information analysis. As for the result obtained from this research, they are materials in a very brief explanation book that is composed of twenty-five chapters, and in it the investigations use the language easy to facilitate the concept of the students, which Ahmad Zaini Dahlan explained
PENERAPAN GERAK BROWN GEOMETRIK PADA DATA SAHAM PT. ANTM
Authors: Putri Darvi Mailisa , Hasibuan Lilis Harianti
Published: November 2022

Penelitian ini akan mengkaji aplikasi gerak Brown geometrik pada data harga saham PT. Antm. Data harga saham yang digunakan adalah data harga saham penutupan dari tanggal 02 Januari 2019 sampai dengan 30 Desember 2019 dengan periode harian. Dalam mengaplikasikan data harga saham PT. Antm pada gerak Brown geometrik diperlukan nilai return harga saham yang memenuhi asumsi dari gerak Brown geometrik. Selanjutnya melalui parameter-parameter yang diperoleh dari return harga saham dan membangkitkan data berdistribusi normal atau  sebanyak data yang diamati dan harga awal yang telah diketahui maka didapat plot hasil dari data harga saham PT. Antm yang telah memenuhi asumsi gerak Brown geometik.AbstractThis research will examine the application of geometric Brownian motion on the stock price of  PT. Antm. The stock price data used is the closing stock price data from January 02nd 2019 to December 30th 2019 with a daily period. In applying the stock price of PT. Antm on geometric Brownian motion requires a stock price return value that satisfies the assumptions of geometric Brownian motion. Futhermore, through the parameters obtained from the stock price return and generate normally distributed data or   as much as the observed data and the known intial price, then we get the plot of  PT. Antm has fulfilled the assumption of geometric Brownian motion.
MENENTUKAN KEBIJAKAN PEMERINTAH KOTA PADANG MELALUI SIMULASI PERMODELAN SEIR KASUS COVID 19
Authors: Hamzah Prima Kurniati , Kohar Wakidul , Fauzi Ahmad , Riza Ozzy S
Published: November 2022

Covid 19 atau dikenal dengan corona virus merupakan penyakit yang menyerang pernapasan yang ditularkan lewat percikan air ludah dan benda yang terkena percikan air ludah yang mengandung virus corona. Angka kasus covid 19 terus melonjak sehingga perlu diprediksi dengan model matematika SEIR agar mendapat gambaran kasus covid pada saat memasuki bulan Ramadhan dan hari raya Idul fitri. Hal ini bertujuan agar pemerintah perlu membuat kebijakan baru untuk menekan angka kasus covid 19 disaat memasuki bulan Ramadhan dan hari Raya Idul Fitri 1441 H. Hasil penelitian menyatakan angka kasus covid 19 meningkat tajam pada bulan Ramadhan dan libur idul fitri. Pemerintah perlunya membuat kebijakan agar tidak melakukan tradisi mudik, menghentikan sementara pasar pabukoan, melakukan survailens aktif, melakukan karantina ketat terhadap kelompok risiko tinggi serta adanya sanksi yang tegas bagi oknum yang melanggar.AbstractCorona virus, well known as Covid-19 is a respiratory disease transmitted from an infected people to other through saliva liquid that has infected by the virus. The cases gradually increased and to predict the number of cases we applied the mathematical model” SEIR”. This study aimed to predict corona cases at Ramadhan and holiday to celebration the Eid Fitri of 1441 H. The result has shown that the cases would be increasing significantly at those time. The government decided a tight policy for the people who had planned to return to their village, and to shop to the open market, to do an active survailence, tight isolation and punished the people who disobey the policy.
KEUNTUNGAN MAKSIMUM PRODUKSI PABRIK TAHU SAPARINDUAN SAIYO SAKATO DENGAN PENERAPAN METODE SIMPLEKS
Authors: Santi Nirmala
Published: November 2022

Pengusaha dalam menjalankan usahanya tentu ingin mencapai hasil yang maksimal (persoalan optimalisasi), dengan keterbatasan modal yang dimiliki. Sama halnya dengan pemilik Pabrik Tahu Saparinduan Saiyo Sakato (SSS). Sebagai satu-satunya pabrik yang ada di Nagari Sungai Janiah, dan telah menyerap tenaga kerja yakni pemuda nagari, Pabrik Tahu SSS menjadi perhatian peneliti. Penelitian ini juga dilatarbelakangi oleh keinginan peneliti untuk menerapkan secara nyata teori dalam matematika dalam kehidupan sehari-hari. Sehingga masyarakat terutama disekitar tempat penelitian dapat mengetahui, bahwa ilmu matematika memiliki implementasi dalam kehidupan nyata, yang tidak hanya sekedar simbol-simbol yang menurut banyak pandangan masyarakat sulit. Penelitian ini bertujuan untuk mengetahui keuntungan maksimum yang dapat diperoleh Pabrik Tahu SSS dalam satu hari. Dari data yang diperoleh, dan setelah dilakukan pemodelan permasalahan dalam program linear, serta perhitungan menggunakan metode simpleks diperoleh bahwa keuntungan maksimum yang dapat dicapai Pabrik Tahu SSS untuk tiap unit tahu besar dan kecil dalam sehari adalah Rp. 11.266,66817 dengan tahu besar = 0,78168 dan tahu kecil = 99,21832. Pendapatan per-unit Rp. 11.266,66817 sehari dikali produksi maksimal sehari yaitu 100 unit, maka diperoleh keuntungan maksimum sehari Rp. 1.126.666,817.AbstractEntrepreneurs in running their business certainly want to achieve maximum results (optimization issues), with limited capital. The same is the case with the owner of the Saparinduan Saiyo Sakato Tofu Factory (SSS). As the only factory in Nagari Sungai Janiah, and which has absorbed the workforce, namely the village youth, the SSS Tofu Factory is the concern of researchers. This research is also motivated by the desire of researchers to actually apply theories in mathematics in everyday life. So that the community, especially around the research area, can know that mathematics has an implementation in real life, which is not just symbols which according to many people's views are difficult. This study aims to determine the maximum benefits that can be obtained by the SSS Tofu Factory in one day. From the data obtained, and after modeling the problems in a linear program, and calculations using the simplex method, it was found that the maximum profit achieved by the SSS Tofu Factory for each big and small tofu unit in a day was Rp. 11.266.66817 with big tofu  = 0.78168 and small tofu  = 99.21832. Income per unit Rp. 11,266,66817 a day multiplied by the maximum daily production of 100 units, then the maximum daily profit is Rp. 1,126,666,817.
SISTEM PENDUKUNG KEPUTUSAN PENILAIAN KENAIKAN GOLONGAN PADA KARYAWAN PTPN VI UNIT USAHA SOLOK SELATAN MENGGUNAKAN METODE COMPOSITE PERFORMANCE INDEX (CPI)
Authors: Dewi Desi Erni , Aprilia Rima , Prasetya Nurul Huda
Published: November 2022

Peran sistem pendukung keputusan akan membantu pihak kepegawaian untuk mencapai tujuan dari penilaian kinerja karyawan seperti kenaikan golongan tanpa mengesampingkan parameter-parameter yang sudah ditentukan oleh pihak instansi terkait. Metode composite performance index (CPI) adalah indicator gabungan yang dapat digunakan untuk menentukan suatu penilaian atau peringkat dari berbagai alternatif (i) dengan berdasarkan beberapa kriteria (j). Hasil penelitian ini menunjukkan bahwa perhitungan nilai alternatif dan tabel index gabungan memperoleh hasil alternatif B3 memiliki nilai tertinggi dan mendapat ranking pertama serta mendapatkan kenaikan golongan paling tinggi yaitu dari 1A/4 menjadi 1B/0 pada periode 2019 dengan nilai 108,78.Kata Kunci: Sistem Pendukung Keputusan, Composite Performance Index (CPI), Kenaikan Golongan
PERAMALAN TINGKAT PRODUKSI KAKAO TAHUN 2021 DI PROVINSI SUMATERA UTARA DENGAN METODE DOUBLE EXPONENTIAL SMOOTHING BROWN
Authors: Handayani Tri , Lubis Riri Syafitri , Aprilia Rima
Published: November 2022

Cocoa production in North Sumatera Province from 2007 to 2018 tends to decline. The low cocoa production in North Sumatera Province is below optimal conditions which impact on the economic sector, so forecasting is necessary in order to support the development of the upcoming cocoa industry in North Sumatera Province. The purpose of this study was to determine the amount of cocoa production in 2021 in North Sumatera Province using the double exponential smoothing brown method. With parameter values  and values  obtaining the form of the equation for forecasting the level of cocoa production in 2021 in North Sumatera Province using double exponential smoothing brown is . Form the research result, the amount of cocoa production in 2021 in North Sumatera Province obtained tons.
APLIKASI TEOREMA HUKUM LEMAH BILANGAN BESAR PADA PEMBUKTIAN TEOREMA APROKSIMASI WEIERSTRASS
Authors: Ul Hasanah Fitri Rahmah , Putri Darvi Mailisa
Published: November 2022

Teorema aproksimasi weierstrass dinyatakan sebagai fungsi kontinu pada selang tertutup dan terbatas yang daoat didekati dengan barisan suku banyak. Salah satu pembuktian teorema ini dengan menggunakan polinomial Bernstein ). Oleh karena,  dimana  untuk ukuran  cukup besar maka ) dirumuskan menjadi , dimana berlaku hukum lemah bilangan besar dengan . Oleh karena itu, dalam tulisan ini dibahas pembuktian teorema aproksimasi weierstrass dengan hukum lemah bilangan besar.Kata Kunci: bilangan besar, Weierstrass, polinomial Bernstein.
Effects of gamma irradiation, osmotic and freezing processes on chemical, microbial, and pest characteristics of dried Iranian barberry fruit during storage
Authors: Bideli N. , Ahmadi-Roshan M. , Berenji Ardestani S.
Published: November 2022

Seedless barberry is a medicinal shrub and has been cultivated in Iran for more than two centuries. It is perishable with short shelf-life. Irradiation has shown to improve microbial safety and expands durability of raw fruits. Undoubtedly, current food processes undesirably affect bioactive compounds such as anthocyanins. Fresh barberry fruit was harvested in Birjand city by methods including “cutting branches” and “collecting fallen fruit under shrubs”, which locally are known as “puffy barberry” and “jewel barberry”, respectively. Some of the fresh barberries were treated by osmotic solution and then they have been dried. Untreated dried fruit was processed by freezing. Osmotic and frozen treatments were packed in polyamide film. Some of the dried jewel/puffy barberries packed in polyamide film were irradiated at doses of 0, 3, 5, and 10 kGy. All samples were stored at 4 and 25 °C for 6 months. Effects of barberry types (puffy/jewel), processes, storage time and temperature on chemical, microbial, and pest characteristics of dried barberry fruit were evaluated. Puffy barberry gamma irradiated with 5 kGy after 6 months of storage at 4 °C showed acceptable properties. Irradiation and storage at 4 °C were reported as optimal processing and storage conditions for barberry fruit.
Implementation of School Literacy Movement in Islamic Primary School Al Istiqomah
Authors: Ulpiah Ulpiah , Rohmah Siti Khozanatu , Saefudin Asis
Published: November 2022

SDIT Al-Istiqomah is a school that has programs and achievements in the field of literacy, so it is interesting to study how to implement the school literacy movement in the elementary school, including the obstacles and solutions. The method used in this research is the case study method. Based on the results of the study, the implementation of the school literacy movement was carried out in the stages of planning, implementation, and evaluation. At the implementation stage, it is divided into three parts, namely habituation, development, and learning. The various activities are reading, reviewing, presenting, selecting reading ambassadors, and training. The obstacles faced were limited time, difficulty in retelling the contents of reading, and decreased interest in reading during the pandemic. The solution to overcome this is literacy extracurricular activities, providing motivation, and collaboration with parents
Hemotoxicity of Hairy Fig (Ficus hispida L.f.) Fruits on Male Wistar Rats (Rattus norvegicus Berkenhout, 1769)
Authors: Fitria Laksmindra , Sari Annisa Lintang , Handayani Lisa , Widiyanto Slamet
Published: November 2022

Hairy fig (Ficus hispida) fruits (HFF) are widely consumed as food and traditional medicine in several West Asian countries, both the unripe fruit (UHFF) and ripe fruit (RHFF). However, they are not commonly utilized in Indonesia. Acute oral toxicity studies reported No Observed adverse effect level (NOAEL). Further, a reproductive toxicity study found that UHFF boosted spermatogenesis and increased the quality and quantity of spermatozoa. Meanwhile, RHFF exhibited the opposite effects. To provide comprehensive information from the previous study, this research was conducted to evaluate the hemotoxicity of UHFF and RHFF about their impact on the male reproductive system. Nine Wistar rats were assigned into three groups: the first group received UHFF juice, the second group received RHFF juice, and the third group received distilled water as control. The volume of each treatment was 2 mL/individual/day for 77 days. On days 0, 28, and 77, blood samples were collected for routine hematological profile examination using a hematology analyzer (Sysmex®XP-100). Data were analyzed using a one-way ANOVA test and Duncan's test (α=0.05) to discover significant differences between groups and times. Results showed that consuming hairy fig fruit, especially the UHFF, had an unfavorable effect on erythrocytes resulting in hypochromic microcytic anemia. Still, there was no adverse effect on leukocytes and platelets. Anemia may have occurred due to the presence of hemotoxic compounds that interfere with the synthesis and binding of hemoglobin or because the hairy fig fruit filtrates were oxidized, thereby increasing the level of oxidative stress within the body, of which is a drop in hemoglobin levels.
Diversity of the Cave-Dwelling Bat (Chiroptera) in the Ngobaran Coastal Area, Karst of Gunung Sewu
Authors: Bagus Putra Prakarsa Tatag , Putri Rizka Apriani , Rahmawati Yunita Fera , Dalee Abdullah Dolah
Published: November 2022

Bats (Chiroptera) are divided into two suborders (Yinpterochiroptera and Yangochiroptera). More than 50% of species of bats use caves as their roosting sites. Thus, they play a crucial role in the cave ecosystem. For that reason, they also exist as keystone species in the karst area. Gunung Sewu is one of the karst areas in Indonesia that best exemplifies tropical karst. Furthermore, Gunung Sewu is still at risk of habitat loss despite being designated as a Geopark. This study aimed to understand the diversity of bats that live in caves in the karst region of Gunung Sewu, specifically in four caves near Ngobaran Beach between April and June 2020. A harp net and misnet placed at the cave’s entrance were used to capture bats for data collection. After they were captured, the bats were identified using Morphometry and the Shannon-Wiener index. Through another index, Margalef index, the bat diversity in the four cave habitats was expressed, with a discovery that there are many different species. Based on the Jaccard similarity index, bats were categorized again using cluster analysis and the unweighted pair-group method using arithmetic averages (UPGMA). A total of nine species across five families were identified. The diversity of existing species variety was also recognized by analyzing the composition of the four cavern inhabitants. The four cave ecosystems’ bat diversity was divided into three categories: moderate variety, low similarity, and high species diversity. Except for Cekelan 1 Cave and Gebyog Cave (P=0.015), other variations did not demonstrate a meaningful difference (P0.05). This demonstrates how different each ecosystem is. Therefore, they could be classified as potentially spoiled habitats, demanding additional conservation efforts.
An Extracellular Pectinase from ISH16 Bacteria Isolated Induced by Coffee Pulp Waste Substrate
Authors: Muzakhar Kahar , Elida Farah Salma , Putrasetya Ramdhan , Siswoyo Siswoyo , Winarsa Rudju , Wiyono Hidayat Teguh
Published: November 2022

An α-1,4-glycosidic bonds galactoses pectin, mainly composed of a D-galacturonic acid chain, are important biomaterial widely used in industries. Utilizing this material, a bioprocess, including the biocatalysis pectinase, is often needed. Pectinase production was optimized in 7 days SSF at 37°C, and the pectinase activities were daily measured by the method of Somogy-Nelson. The optimum pectinase production was 0.166 U/ml on the fourth day SSF. Purification using open column ion exchange chromatography DEAE cellulose DE-52 resulted in 1030.9 folds of pectinase purity with a yield of 25.9%. The enzyme was at optimal activity at pH six and attended stable in the pH range of 5.5-8, while optimal activity at a temperature of 50°C and was stable in the range of 30-45°C. The pectinase activity increased by 120% with the addition of 10 mM Mg2+, and 95% retained when 10 mM Ca2+ was added. The presence of 10 mM Na+, K+, and Fe2+ resulted in a slight effect of activity at 85%, 83%, and 78%. However, it was strongly inhibited by 10 mM Al3+ and retained 25%. Based on the results above, the microbial utilization of coffee pulp waste by ISH16 bacteria pectinolytic is one opportunity to produce valuable pectinase with low-cost production, so comprehensive examination in large-scale production is needed too. In this paper, all research detail steps were described.
Desempenho Financeiro e Responsabilidade Social Corporativa: Uma análise do setor elétrico brasileiro
Authors: Fodra Marcelo , Fernandes Taynara Roberta
Published: November 2022

A discussão sobre a conexão entre a responsabilidade social corporativa e o desempenho financeiro não é tema recente. O objetivo deste trabalho foi avaliar a existência de eventual associação entre o desempenho financeiro das empresas, mensurado pela sua geração de valor adicionado, e os desembolsos com segurança no trabalho, creche e auxílio-creche e educação e cultura. Foram coletados dados de empresas brasileiras de capital aberto, operantes no setor elétrico do Brasil, entre 2011 e 2016. Os resultados apontaram que houve associação positiva estatatisticamente significante entre o desempenho financeiro e os desembolsos com creche e auxílio creche e negativos, também significantes, em relação à saúde e segurança no trabalho e educação e cultura.
Qualidade de vida no trabalho: um estudo com os técnicos de enfermagem das Unidades de Saúde do Município de Ipatinga
Authors: Siqueira Paulo Henrique de Lima , Da Silva Sá Keila Valadares
Published: November 2022

Este estudo teve como escopo mostrar a importância da qualidade de vida no trabalho, visto que ela é responsável por criar servidores comprometidos com a missão pública e com o comportamento ético. O objetivo foi analisar a Qualidade de Vida no Trabalho (QVT) dos servidores técnicos de enfermagem das Unidades de Saúde da Prefeitura Municipal de Ipatinga, mostrando a importância da valorização do servidor. Para tanto, foi utilizada uma pesquisa descritiva por meio de um questionário aplicado sobre uma amostra não probabilística para investigar a QVT destes servidores e a valorização dos mesmos por parte da prefeitura e dos usuários. Distribuindo as questões em cinco grandes esferas sugeridas no estudo de Pedroso (2014) – Biológica / Fisiológica, Psicológica / Comportamental, Sociológica / Relacional, Econômica / Política e Ambiental / Organizacional –, a pesquisa mostrou que apesar das servidoras entrevistadas estarem satisfeitas e motivadas por sentirem-se capazes de realizar as tarefas, ter autonomia no trabalho, ter uma boa relação interpessoal com colegas e usuários, o que afetou negativamente a QVT delas foi a desvalorização por parte da Prefeitura Municipal de Ipatinga quanto ao salário, os benefícios, a capacitação profissional, a possibilidade de promoção no cargo e a disponibilidade de serviços de saúde.
Education in online schools in assessments of the older family generation
Authors: Proshkova Zoya , Yeremenko Yana
Published: November 2022

This article's topic is the analysis of the family influence on the choice of such an educational route for children as studying at an online school. The relevance of the research is connected with the development of online education in Russia and around the world, the digitalization of the educational sphere. The main attention is paid to the position of the older generation of the family — the grandparents of students — to the admission of grandchildren to online schools. Other research goals are the advantages and disadvantages of online education, the participation of the older generation in the implementation of the educational route for children in online schools, the Internet forum as a method of digital empirical sociology.
There was an examination of statements of the participants of the Internet forum, where representatives of the older generation of the family, who chose online education for children, discussed a new educational format. The authors have developed a classification of thematic leitmotives of that conversation. Structuring of texts was carried out with the help of Russian specialized computer programs.
It was found out that grandparents of online school students evaluate their grandchildren's education in two ways: a mixed position prevails, in which informants look for the pros and cons of education. It was discovered that the older generation is actively involved in the implementation of the educational route of grandchildren studying in online schools. The most popular leitmotives on the Internet forum were the comfort of learning, free time, improved health of children and an opportunity to prepare qualitatively for final exams. The least significant topics are replenishment of cultural capital and communication.
The methodological analysis of the Internet forum as a method of collecting and analyzing sociological information is conducted. The empirical approach simplifies access to informants and the field stage of the study. The main problem was the complexity and ambiguity of the classification of the content of unstructured texts received on the Internet forum.
The results of the project can be applied in different areas of social policy. Recommendations have been prepared for the federal program "Digital Economy in the Russian Federation" (2019–2024). In addition, it is important to provide families who have chosen online education for their children (through NGOs, mass media, publications in scientific publications) with up-to-date information. Practical effect for the sociology of culture, sociology of education, sociology of the family is the methodological justification and approbation of digital empirical methods. An additional scope of application of the results is training courses for students of sociological specialties.