bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital transformation: basic approaches to defining the notion
Authors: Shelepaeva Albina Kh.
Published: April 2022

Problem statement. Changes in society in connection with the diversity of the use of information and communication technologies, has led to the active use of the concept of digital transformation. A complex polysemic notion describes a multifactorial phenomenon, which necessitates an interdisciplinary approach to the analysis of the concepts content. Methodology. This study used bibliometric analysis of the Russian electronic database with built-in analysis tools. The quantitative and qualitative characteristics of open sources on the topic of Digitalization of education were analyzed using closed search systems and machine analysis of large texts, such as Microsoft Academic Graph and Dimensions.ai. Content analysis and thematic monitoring were carried out using the keywords digitalization of education, digital transformation, and digital transformation of higher education. The assessment of the level of interest in this topic was carried out according to the statistics of queries using the wordstat.ru resource. Results. The term digital transformation analyzed in a broad context. Digital transformation is defined using philosophical and cultural approaches. The axiological approach sets a broad framework for discussion and requires additional research. Conclusion. A sample of both Russian and foreign works on the problem of digital transformation was made using various means of statistical analysis. Three approaches to the analysis of digital transformation are considered, definitions are formulated and the need to study the transformation of education using an anthropological approach is substantiated.
Constatation of the teachers’ competence areas in general education
Authors: Afanas Aliona
Published: April 2022

Problem statement. The article presents experimental data on the teachers competence areas. Methodology. The investigative approach of the continuous professional training was based on a complex, applied research strategy that combines both quantitative and qualitative methods of investigation. Results. The conducted analysis identified teachers competence areas in continuous professional training such as relational competence, teaching-learning competence, managerial competence, design and planning competence, specialized cognitive competence, and evaluation and monitoring competence. The article presents experimental data of the pedagogical experiment conducted with 888 subjects divided into two samples: the training sample (441 subjects) and the control sample (447 subjects). Conclusion. The framework for assessing teachers competence areas served as a basis for identifying teachers competence areas, which contains the following components: evaluation criteria, performance levels, performance indicators, degree of evaluation and descriptors.
Development of students’ scientific knowledge on computer modeling while teaching inverse problems for differential equations
Authors: Kornilov Viktor S.
Published: April 2022

Problem statement. Currently, the higher school provides students of physical and mathematical training areas with fundamental subject knowledge, forms professional competencies, develops creative abilities and creativity, teaches them to use modern computer technologies to solve applied problems. One of such academic disciplines, in which students are taught to use computer technologies in solving applied mathematical problems, is a training course called Inverse problems for differential equations. Such an academic discipline has been taught in some Russian universities in the form of elective courses since the 70s of the 20th century. The educational material of this training course includes advanced research results on inverse problems belonging to specialists from different countries, such as Germany, Italy, China, Sweden, Netherlands, Russia, Japan and other foreign countries. During the practical classes, much attention is paid to the use of computer simulation for the study of such applied problems. This circumstance implies the development of educational materials taking into account the professional training of university students, in which attention should be paid to the use of computer modeling in solving mathematical models of inverse problems. Methodology. The implementation of training of university students in physical and mathematical areas of training involves taking into account modern scientific achievements of world science in the field of inverse problems using computer simulation and implementing advanced pedagogical technologies in the classroom. Results. Students acquire scientific knowledge of computer modeling and master the wide possibilities of computer modeling in the study of inverse problems. Conclusion. The presence of scientific knowledge in the field of computer simulation and practical experience of its application for solving inverse problems gives students great advantages and opportunities to be successful specialists in the field of applied mathematics and to be in demand on the labor market in various spheres of human activity.
The pyramid method in the conditions of the digitalization of education
Authors: Pak Nikolay I. , Barkhatova Darya A. , Khegay Lyudmila B.
Published: April 2022

Problem statement. The digital transformation of education necessitates new approaches to the development of digital educational resources, the design of educational and scientific projects. They should provide a high degree of personification of training, structure the processes of organizing, monitoring and assessing the quality of educational products and results. In the process of digitalization of education, the goals of the educational system are expanding. In this regard, the work is devoted to the substantiation of the pyramid method for solving educational problems that meet the modern requirements of a digital society. Methodology. The analysis of the pyramid method, developed by Barbara Minto, used in the design of roadmaps for business development and contributing to the development of structural thinking, as one of the most sought-after qualities of a modern specialist, made it possible to highlight a number of advantages and benefits in the case of transformation of this method to solve educational problems. In particular, the method is convenient for the development of educational content in the format of a pyramidal tree of knowledge, for the formation of clear plans and assignments for students on the topics of coursework and diploma works, for monitoring and assessing the quality of educational results, complex systems and objects. Results. Examples of using the pyramid method for creating inverted educational resources, increasing interactivity during lectures and practical classes, organizing control and self-control of students knowledge, monitoring and assessing the quality of educational resources and objects are shown. Conclusion. The pyramid method facilitates the process of creating digital educational resources that correspond to the maximum extent to the characteristics of the modern generation and satisfy the principles of personification of learning. Its mastering and application in educational activities by the students themselves contributes to the development of their structural thinking.
Genome-wide RAD sequencing data suggest predominant role of vicariance in Sino-Japanese disjunction of the monotypic genus Conandron (Gesneriaceae)
Authors: Ling Shao-Jun , Yao Xiao-Lan , López-Pujol Jordi , Caujapé-Castells Juli , Tan Ke , Ren Ming-Xun
Published: April 2022

Disjunct distribution is a key issue in biogeography and ecology, but it
is often difficult to determine relative roles of dispersal vs.
vicariance in disjunctions. Conandron ramondioides (Gesneriaceae) is a
tertiary relict monotypic species distributed disjunctively in mainland
China, Taiwan Island and Japan, where is a key region for understanding
evolution and diversification of modern angiosperms. Population
phylogenetic and phylogeographic structures of a comprehensive sampling
of C. ramondioides by ddRAD sequencing were assessed, combined ABC
modeling and SDM to infer the effects of multiple glaciation periods and
to survey climatic niche differences by checking putative population
divergence models and demographic scenarios. We found a very high degree
of genetic differentiation among mainland China, Taiwan Island and
Japan, with very limited gene flow between regions and a clear Isolation
by Distance pattern. Mainland China and Japan clades diverged first from
a widespread ancestral population in middle Miocene, followed by a later
divergence between mainland China and Taiwan Island clades at early
Pliocene. Three current groups have survived in various glacial refugia
during LGM, and experienced contraction and/or bottlenecks since their
divergence during Quaternary glacial cycles, with strong niche
divergence between mainland China + Japan and Taiwan Island ranges.
Overall, we verified a predominant role of vicariance in the current
disjunction of monotypic genus Conandron. The sharp phylogenetic
separation, ecological niche divergences among these three groups and
the great number of private alleles in all populations sampled indicate
a considerable time of independent evolution, and suggests the need of a
taxonomic survey to detect potentially overlooked taxa.
Development of a plate reduction neutralization test and microneutralization assay for a SARS-CoV-2 seroepidemiologic survey in company animals in Mexico
Authors: Solís-Hernández Mario , Dehesa-Freddy * , Roxana Pastrana-Unzueta , Nadia Carillo-Guzmán , Liljehult-Fuentes Francisco , Marcela Villarreal-Silva , Diego Pérez-De la Rosa Juan , Ramirez-Mendoza Humberto , Franco José Guillermo Estrada , Romero Ninnet Evelyn Gómez , Navarro-López Roberto , Espinosa-Gómez Fabiola Carolina , Bautista Elizabeth
Published: April 2022

SARS-CoV-2 is a virus that originated in Wuhan, China, in 2019 and has
since spread worldwide, infecting people and animals. The objective of
this study was to implement the plaque reduction neutralization test
(PRNT90) and microneutralization (MN) to evaluate the presence of
antibodies against SARS-CoV-2 in companion animals. First, a virus was
isolated and sequenced, which showed a similarity of 99.9% with the
original Wuhan strain. This virus had a titer of 3.55 DICC
; for the PRNT90, it was adjusted to 30-40
plaque-forming units (PFU) and for the MN, at 100 DICC
. For both assays, serial double dilutions of the sera
were performed from 1:10 to 1:5120. Serum samples from people with
negative and positive status were used as controls, as well as samples
from companion animals (dogs and cats). In the case of human samples,
the titers were from 1:10 to 1:5120 with PRNT and from 1:10 to 1:1280
with MN (r = 0.957). Analysis of animal samples
(dogs n = 521 and cats n = 29) revealed 10 positive samples, six from
dogs and four from cats. Cats had higher titers than dogs. Titers ranged
from 1:80 to 1:320 by MN and from 1:160 to 1:640 by PRNT90 for cats and
from 1:10 to 1:40 by MN and from 1:10 to 1:80 PRNT90 for dogs (r
= 0.621). In both human and animal samples, the
highest titers were observed with the PRNT90 test; however, the MN test
is easier to perform than the PRNT90 test, so it is suggested as the
test of choice for animal seroprevalence studies.
“Spatio-Temporal Analysis of Land Use/Land Cover Change and Perform the Shannon Entropy Model for Urban Built-Up Growth of Silchar City, India: Very High-Resolution Satellite Data”
Authors: Mohabey Divya Prakash , Nongkynrih Jenita M. , Kumar Upendra
Published: April 2022

In the last few decades, Silchar city and its surrounding areas have
witnessed massive population growth due to local and migrated peoples,
which led to the rapid transformation of its land use/land cover (LU/LC)
pattern. For detailed micro-level LU/LC analysis, very high-resolution
satellite data (VHRS) and on-screen visual interpretation techniques
were used. The LU/LC classification of the city has been prepared for
2005, 2011 and 2018 with five major and further seventeen sub-classes.
The wards of the city were classified into five zones and the Shannon
entropy model applied to analyze the degree and trends of urban built-up
development. The obtained results indicate that the Silchar city is
compact near the center which follows the infill built-up growth trend.
However, as the distance has increased from its center the scattering
with infill growth pattern was observed. The accuracy assessment
techniques are used to validate the results of the classification. The
results of this study can provide detailed information for land-use
planners, researchers, policy-decision makers, and municipal
authorities.
Thermodynamic Analysis of Solar Organic Rankine Cycle Using Evacuated Tubular Collector
Authors: ÇAĞLAR Ahmet , BAHADIR Mustafa Burak
Published: April 2022

This study investigates the affecting parameters for the thermal performance of a Solar Organic Rankine Cycle. The thermodynamic analysis covers the research on the effects of the following parameters: the pressure and temperature of the working fluid at the turbine entrance, and the turbine and pump isentropic efficiencies. The solar organic Rankine cycle is analyzed for an evacuated tubular solar collector. The required collector area for both a fixed value (0.8) of solar fraction and several source (solar collector output) temperatures is also determined for different months of the year in the study. The computer software of Engineering Equation Solver (EES) is used to construct the mathematical model of the cycle and to perform the thermodynamic analysis of the system. In the analysis, R123 and R600 organic fluids are used, and a comparison is made between the two fluids in terms of their effects on the system performance. The results show that R600 has better performance characteristics than R123. The results also show that the system efficiency decreases with increasing temperature at turbine entrance, but with decreasing pressure at turbine entrance. The turbine efficiency influences the system thermal efficiency significantly while the pump efficiency does not have a significant effect on the system thermal efficiency.
Metoksimetiltrifenilfosfonyum Klorür Tek Kristalinde Oluşturulan Yapısal Bozukluğun Elektron Paramanyetik Rezonans ile Tespiti
Authors: ÇALIŞKAN Ali Cengiz , ÇALIŞKAN Betül
Published: April 2022

Metoksimetiltrifenilfosfonyum klorür (MOMTPPC) tek kristalleri Elektron Paramanyetik Rezonans (EPR) spektroskopi yöntemi ile analiz edilmiştir. MOMTPPC tek kristalleri, 60Co- kaynağı ile ışınlanarak paramanyetik bozukluklar oluşturulmuştur. MOMTPPC tek kristallerinin EPR spektrumları, 120 K sıcaklıkta üç dik eksen etrafında belirli açılarda döndürülerek EPR spektrumları alınmıştır. MOMTPPC'de ışınlama etkisiyle oluşan radikalin yapısı, EPR spektrumlarının detaylı incelenmesi ile elde edilmiştir. Radyasyonun etkisiyle C20-H24 bağı kopmuş ve bir paramanyetik merkez oluşmuştur. Kimyasal bağın kopması sonucu oluşan radikalin eşleşmemiş elektronunun C20 atomu üzerinde bulunduğu belirlenmiştir. Radyasyon hasar merkezine ait anizotropik g-faktörü ve aşırı ince yapı çiftlenim sabitleri belirlenmiştir. Spektroskopik yarılma faktörünün izotropik değeri g = 2,00764 olarak elde edilirken, aşırı ince yapı sabitlerinin izotropik değerleri ise sırasıyla, 〖(a_H)〗_α = 2,010 mT, 〖(a_P)〗_β = 3,196 mT ve 〖(a_(C_6 H_5 ))〗_γ= 〖(a_fenil)〗_γ = 0,472 mT olarak hesaplanmıştır. EPR parametrelerine ait yön kosinüsleri elde edilmiştir. Ayrıca, simülasyon çalışmaları ile deneysel verilerimizin doğruluğu desteklenmiştir.
PENGARUH VARIABEL PELINDIAN TERHADAP EKSTRAKSI NIKEL DALAM PELINDIAN BIJIH NIKEL LATERIT
Authors: Wahab Wahab , Deniyatno Deniyatno , Ismayanti Windi , Supriatna Yayat Iman
Published: April 2022

Pelindian bijih nikel laterit pada tekanan atmosfir menjadi perhatian karena memiliki beberapa kelebihan yaitu biaya operasional dan kebutuhan energi yang rendah. Dalam penelitian ini akan dipelajari pengaruh temperatur, konsentrasi asam, dan waktu pelindian terhadap persen ekstraksi nikel. Dalam penelitian ini variabel yang digunakan yaitu temperatur (80â°C, 90â°C, 100â°C), konsentrasi asam sulfat (0,8 molar, 1,1 molar, 1,4 molar) dan waktu pelindian (80 menit, 90 menit, 100 menit). Agen pelindi yang digunakan yaitu larutan asam sulfat. Berdasarkan hasil penelitian diperoleh persen ekstraksi nikel tertinggi yaitu 91,430% pada temperatur 100â°C dan waktu pelindian 180 menit. Hasil Analysis of Variance (ANOVA) menunjukkan urutan variabel yang paling yaitu konsentrasi asam sulfat (B), temperatur (A), waktu pelindian (C), interaksi temperatur-waktu pelindian (AC), interaksi temperatur-konsentrasi asam sulfat (AB), interaksi temperatur-konsentrasi asam sulfat-waktu pelindian (ABC), dan interaksi temperatur-waktu pelindian (BC).
PENGOLAHAN CITRA DIGITAL UNTUK IDENTIFIKASI OBJEK MENGGUNAKAN METODE HIERARCHICAL AGGLOMERATIVE CLUSTERING
Authors: Jumadi Juju , Yupianti Yupianti , Sartika Devi
Published: April 2022

Identifikasi objek (object recognition) merupakan suatu bidang keillmuan dari komputer vision yang menggambarkan suatu objek yang didasarkan pada sifat utama dari objek tersebut. Identifikasi objek pada citra digital membutuhkan teknik dan metode yang mampu untuk mengekstraksi dan mengidentifikasi fitur-fitur yang terdapat pada citra digital, dimana komponen utamanya adalah warna sebagai dasar dari representasi objek pada citra digital. salah satu metode yang mampu menerapkan pengelompokan warna â€“ warna objek pada citra digital sehingga dapat menjadi fitur utama dari objek pada citra digital adalah Hierarchical Agglomerative Clustering. Analisa dilakukan secara bertahap yaitu analisis sistem dan analisis algoritma agglomerative clustering. Proses analisa kemudian dilanjutkan dengan tahap perancangan yang mana dimulai dengan perancangan use case diagram dan perancangan flowchart. Akurasi dari algoritma Hierarchical Agglomerative Clustering cukup baik khususnya pada objek yang memiliki warna khusus atau warna yang telah menjadi ciri dari objek tersebut namun dapat menghasilkan pengenalan yang buruk jika objek yang berbeda memiliki warna dominan yang sama
FACTORS INFLUENCING THE USER STICKINESS OF A MOBILE NEWS APPLICATION: THE CASE OF â€˜LINE TODAY APPâ€™
Authors: Paramartha Putu Agya , Santoso Harry Budi , Putra Panca Hadi
Published: April 2022

LINE TODAY App is a mobile news application developed by LINE Corp. The main objective of the project itself is to reach a certain amount of screen views every month which is user stickiness. But it only reached three percent of the goal in the second year of development. Due to the importance of this project to the company, the application needs an immediate and proper solution. Therefore, factors that affect the stickiness of the LINE TODAY App have to be examined. The theoretical framework of this research is constructed based on the information system success model and customer engagement theory. This study is mixed-methods research which research object is users who used LINE TODAY App. Data collection is conducted in sequence, started by collecting an online survey by involving 76 users. It was continued by conducting the contextual interview by inviting 8 interviewees. The quantitative data was processed using partial least squares structural equation modeling (PLS-SEM) using the SmartPLS application. This study found that there are four factors that affect stickiness through an intermediate variable satisfaction which are system quality, information quality, brand awareness, and enthusiasm.
PERANCANGAN ARSITEKTUR ENTERPRISE SISTEM INFORMASI MENGGUNAKAN TOGAF ADM DI SMA NEGERI 1 SINGARAJA
Authors: Adi Sista Dewa Nyoman , Candiasa I Made , Aris Gunadi I Gede
Published: April 2022

Penelitian ini bertujuan untuk mendefinisikan serta menguji efektivitas TOGAF ADM sebagai model arsitektur enterprise sistem informasi guna mendukung aktivitas bisnis di SMA Negeri 1 Singaraja.Â  Secara garis besar data pada penelitian ini diambil dengan teknik wawancara dan observasi kemudian dianalisis menggunakan pemodelan TOGAF ADM. Adapun perangkat yang digunakan untuk memodelkan fase dalam TOGAF ADM adalah analisis SWOT, Value Chain, Bussiness Process Modeling and Notation, Unified Modelling Language, McFarland Strategic, dan Focus Group Discussion (FGD). Hasil penelitian ini berupa (1) rekomendasi pembuatan aplikasi, (2) rekomendasi topologi jaringan, (3) rekomendasi hardware dan software, (4) usulan urutan implementasi dan (5) roadmap implementasi dari rekomendasi-rekomendasi yang telah diberikan, serta (6) pengujian menggunakan teknik FGD. Dari hasil pengujian diperoleh hasil bahwa rekomendasi peneliti diterima dengan baik oleh peserta dan diharapkan dapat direalisasikan. Sedangkan hambatan yang akan ditemui ketika mengimplementasikan sistem informasi ini adalah pada proses mengubah kebiasaan para guru, pegawai dan siswa yang telah sekian lama mengandalkan pekerjaan secara manual. Serta faktor usia pada guru dan pegawai juga akan menjadi penghambat dalam proses penyesuaian tersebut.
KARAKTERISTIK RDF DARI SAMPAH KOTA TERSELEKSI YANG DIHASILKAN OLEH PYROLYSER ULIR
Authors: Himawanto Dwi Aries
Published: April 2022

Penelitian ini bertujuan untuk menemukan kondisi temperatur slow pyrolysis yang sesuai dari sampah kota terseleksi (segregated municipal solid wastes) guna menghasilkan bahan bakar padat alternatif (Refused Derived Fuel) secara berkesinambungan dengan menggunakan screw pyrolyser.Untuk mencapai tujuan tersebut, maka dilakukan rekaya peralatan proses slow pyrolisis secara berkesinambungan dalam skala laboratorium dengan menggunakan Â screw pyrolyser yang tepat agar menghasilkan Refused Derived Fuel yang memiliki karakteristik produk minimal sama dengan hasil studi sebelumnya. Penelitian dilakukan dengan 5 variasi temperatur reaktor yaitu 3000C, 3500C, 4000C , Â 4500CÂ  dan 5000C ..Dengan menggunakan prototipe pyrolyser ulir dengan kemampuan proses 6 kg/jam, dengan produk char yang dihasilkan terbaik didapatkan pada komposisi 70 % sampah organik yang dipirolisa pada temperatur pyrolyser 450Â°C. Char yang dihasilkan mengandung kadar air 1,77 %, kadar abu 9,66 %, volatile matter 66,387 % dan karbon tetap 22,17% serta memiliki nilai kalor 6,86 kkal/gram. Efisiensi proses yang didapatkan berkisar 95,3%.
ANALISIS KUALITAS AIR DI PERAIRAN DANAU TOBA KECAMATAN PANGURURAN, KABUPATEN SAMOSIR
Authors: Silaban Winarto , Silalahi Mastiur Verawaty
Published: April 2022

Lake Toba is a lake located in Samosir Regency, North Sumatra Province with a surface area of 1,124 km2 (112,400 ha). Lake Toba is located at a geographical position 2Â°41â€²N 98Â°53â€²E / 2.68Â°N 98.88Â°E with an altitude of 995 above sea level. The purpose of this study was to determine water quality in terms of chemical, physical, and biological parameters, as well as the status of water quality in Lake Toba. Determination of the sample point using the "sample survey method" which is the method of taking the sample by dividing it into several segments or points that can represent the population. The method used in this study is a descriptive method with a quantitative approach. Based on the results of the study, it can be concluded that the quality of the waters of Lake Toba in Pangururan District is classified as not good, specifically nitrate, nitrite, and ammonia concentration. Those that are classified as good are temperature, pH, BOD5, O2, and COD. Water quality in Lake Toba is in the category of polluted lightly. Using biological analysis, Lake Toba waters in Pangururan District contain several phytoplankton, including Oocystis sp and Anabaena Sp.
UNDIKSHA VIRTUAL ASSISTANT (SHAVIRA): INTEGRATION FREQUENCY ASKED QUESTION WITH RASA FRAMEWORK
Authors: Resika Arthana I Ketut , Dewi Luh Joni Erawati , Seputra Ketut Agus , Marti Ni Wayan
Published: April 2022

Nowadays, the implementation of chatbots in information systems is getting popular to increase user experience. In our previous research, we developed Undiksha Virtual Assistant (Shavira). Shavira is a knowledge management system (KMS) as Frequency Asked Question (FAQ) system to facilitate users to get an answer about their questions. The challenge on the existing Shavira system is that the users must open a website and type queries to get a list of answers. The text query must match with the keyword in systems. To address this problem and to avoid cognitive load, in this research we implemented a chatbot in Shavira. The purpose of the chatbot implementation in Shavira is to make information easier to be accessed and to increase user experience. The users can ask a question in natural language and get an answer immediately on their chat application such as: Telegram, Facebook, or Messenger. We used Rasa Framework as a chatbot engine in Shavira. Rasa Framework is an open-source virtual assistant engine based on artificial intelligence. The challenge in conducting this research is in integrating the existing FAQ system with Rasa Framework. This research consists of four phases, they are: adaptation data structure in the existing FAQ with data structure requested by Rasa framework, data integration and mapper, and evaluation. The result of this research is a new Shavira that is integrated with a chatbot and can be accessed from chat applications such as Telegram.Â  We evaluated the accuracy of Shavira powered by Rasa Framework with ten topics about academic information. The results showed that the accuracy of Shavira is 90%. We also evaluated the usability of Shavira with Software Usability Scale (SUS) Questionnaire. The usability evaluation showed that Shavira satisfied users with valueÂ  81 (threshold 68) and categorized Excellent, Acceptable and Prometer.
METODA FAST FORWARD UNTUK MEMPERCEPAT DINAMIKA KUANTUM ADIABATIK PADA SPIN TUNGGAL
Authors: Benggadinda Annisa , Setiawan Iwan
Published: April 2022

AbstrakPenelitian ini membahas metode percepatan dinamika kuantum adiabatikÂ  pada sistem spin tunggal yaitu dinamika spin yang bergerak pada keadaan awal up (atas) akan bergerak ke down (bawah) pada keadaan akhir. Metode ini disebut skema fast forward. Metode ini pertama kali di usulkan oleh Masuda dan Nakamura. Dalam metode ini, skema percepatan dibangun dengan menambahkan suku interaksi penggerak ke Hamiltonian awal dan mempercepatnya dengan menggunakan faktor penskalaan waktu yang bernilai besar dan parameter adiabatik yang menuju nol (0) dan bertujuan mewujudkan dinamika kuantum adiabatik pada waktu yang singkat dan dengan penambahan medan magnet penggerak. Hamiltonian penggerak dan medan magnet penggerak ini menjamin spin tunggal dapat bergerak dari keadaan awal ke keadaan akhirÂ  dalam waktu yang singkat tanpa mengubah karakteristik awalnya.Â Kata kunci: Adiabatik, Dinamika Kuantum, Spin tunggalÂ AbstractThis study discusses the method of accelerating adiabatic quantum dynamics in a single spin system, namely the dynamics of a spin that moves in the up initial state will move down in the final state. This method is called a fast forward scheme. This method was first proposed by Masuda and Nakamura. In this method, the acceleration scheme is constructed by adding the driving interaction term to the initial Hamiltonian and accelerating it by using a large time scaling factor and adiabatic parameter towards zero (0) and aims to realize adiabatic quantum dynamics in a short time andÂ  by adding a driving magnetic field. The driving Hamiltonian and the driving magnetic field ensure that a single spin can move from its initial state to its final state in a short time without changing its initial characteristics.Â Keywords : Adiabatic, Quantum Dynamics, Single Spin
PENGARUH PEMBERIAN PAKAN AZOLLA MIKROPHYLLA TERHADAP PERTUMBUHAN IKAN LELE DUMBO (CLARIAS GARIEPINUS)
Authors: Siagian Gunaria , Situmorang Masni Veronika
Published: April 2022

Penelitian ini berjudul â€œPengaruh Azolla mikrophylla Terhadap Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus).â€. Tujuan penelitian ini adalah untuk mengetahui laju pertumbuhan ikan lele dumbo (Clarias gariepinus) setelah diberi pakanÂ  Azolla mikrophylla dan faktor fisik-kimia lingkungan yang mempengaruhi pertumbuhan ikan lele dumbo (ClariasÂ  gariepinus). Metode yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan tiga perlakuan dan 3 kali ulangan dalam 150 hari. Adapun perlakuan dalam penelitian ini adalah Perlakuan S1: 100% Pakan Azolla , S2: 50 % Azolla dan 50% pelet, dan S3 : 100% pelet. Berdasarkan analisis statistik (Anova), pemberian jenis pakan berbeda berpengaruh nyata terhadap derajat kelangsungan hidup ikan lele dumbo (P > 0,05). Laju Pertumbuhan Panjang Spesifik (LPPS) ikan lele yang dipelihara selama 50 hariÂ  berkisar antara 2,58-2,77%, sedangkan LPBS berkisar 6,58 â€“ 6,76%. Efisiensi pakan rata-rataÂ  (%) ikan lele dumbo selama pemeliharaan 50 hari adalah 12,07 â€“ 25,76 %. Hasil uji statistik menunjukan bahwa pemberian jenis pakan berbeda menghasilkan efisiensi pakan yang berbeda nyata (p > 0,05) terhadap pertumbuhan ikan lele dumbo. Efisiensi pakan tertinggi didapat pada perlakuan A (100% Azolla) sedangkan efisiensi pakan terendah pada perlakuan C (100% Pelet). Kisaran suhu selama penelitian antara 27,33 â€“ 27,44 0C. pH 7,88 -7,93 danÂ  DO 5,72 â€“ 5,81.
SIMULASI KENAIKAN KAPASITAS PRODUKSI GULA PADA PROSES KARBONATASI DI PT. INDUSTRI GULA GLENMORE MENGGUNAKAN PERANGKAT LUNAK ASPEN PLUS
Authors: Muharja Maktum , Darmayanti Rizki Fitria , Widjaja Arief , Firmansyah Arfian Alwi , Karima Nur
Published: April 2022

PT. Industri Gula Glenmore (PT. IGG) merupakan salah satu industri gula di Indonesia yang menggunakan metode defekasi remelt karbonatasi (DRK) pada proses pemurnian nira. Dalam beberapa tahun kedepan, PT. IGG berencana menaikkan kapasitas produksi sebesar 8.000 ton/hari dari kapasitas semula sebesar 6.000 ton/hari. Oleh karena itu, studi ini bertujuan untuk mensimulasikan peningkatan produksi gula dari 6.000 menjadi 8.000 ton/hari dengan menganalisis neraca massa dan neraca energi dan mensimulasikannya menggunakan software Aspen Plus V11. Proses yang disimulasikan dalam studi ini berfokus pada kinerja karbonator. Hasil perhitungan kapasitas 6.000 ton/hari menunjukkan massa keluar dan energi yang dibutuhkan (âˆ†H) pada karbonator 2 secara berturut-turut adalah 72.766,20 kg/jam dan -1.828,32 kkal/jam. Sedangkan pada kapasitas 8.000 ton/hari, massa keluar dan energi yang dibutuhkan pada karbonator 2 secara berturut-turut adalah 97.015,61 kg/jam dan -2.441,30 kkal/jam. Simulasi menggunakan Aspen Plus menunjukkan hasil dengan selisih perbedaan yang dapat ditoleransi dibandingkan dengan perhitungan neraca massa dan energi. Dari studi ini, simulasi peningkatan produksi gula akan berguna untuk mempermudah proses desain karbonator pada kenaikan kapasitas produksi atau penggantian metode pemurnian.
PERLINDUNGAN KAWAT FASA DENGAN OPTIMALISASI SUDUT LINDUNG KAWAT TANAH DAN PENEMPATAN LIGHTNING ARESTER
Authors: L Liliana
Published: April 2022

Petir memiliki arus sangat besar dan waktu yang sangat singkat sehingga dapat menimbulkan kerusakan yang fatal terutama pada peralatan listrik di udara terbuka. Penelitian ini bertujuan menghasilkan jumlah gangguan pada kawat fasa dan lightning arrester, menentukan sudut lindungÂ  kawat tanah, dan mendapatkan penempatan Â optimal lightning arrester untuk memberikan perlindungan terhadap saluran udara tegangan menengah 20 kV di penyulang Muaro Pati Payakumbuh. Perhitungan gangguan dilakukan untuk sambaran petir tidak langsung dan langsung, tanpa dan dengan kawat tanah. Metode Rolling Sphere dengan persamaan Hasse dan Wiesinger digunakan dalam menghitung sudut kawat tanah terhadap sambaran petir langsung dan tidak langsung. Sedagkan metode Pengali Lagrange digunakan untuk menghasilkan penempatan optimal lightning arester. Berdasarkan hasil perhitungan gangguan akibat sambaran petir tidak langsung dan langsung, tanpa dan dengan kawat tanah didapatkan jumlah gangguan 57.8, 43, 32.5, dan 19.9 gangguan per 100 km per tahun dan faktor perlindungan Lighting Arrester sebesar 30,61%. Sudut lindung optimal kawat tanah menggunakan metode Rolling Sphere dengan variasi jarak sambar 200 m, 300 m, 400 m didapatkan masing-masing sudut Ï†=70.05Â°, Ï†=73.73Â°, Ï†=75.93Â°. Sedangkan penempatan lightning arrester menggunakan metode Pengali Lagrange didapatkan nilai jarak optimal S=5.7 meter.
ISOLASI BAKTERI ENDOFIT DARI TANAMAN LABAN (VITEX PUBESCENS VAHL) SEBAGAI ANTIBAKTERI
Authors: Zulfarina Zulfarina , Rosiana Yuni , Ayudia Deya , Darmawati Darmawati
Published: April 2022

Penelitian ini bertujuan untuk mengisolasi bakteri endofit dari daun dan kulit batang tanaman Laban (Vitex pubescens Vahl) dan uji antibakteri . Bakteri di isolasi menggunakan media HVA. Karakteristik bakteri endofitÂ  diamati secara makroskopis, mikroskopis dan melakukan uji katalase serta untuk uji antibakteri menggunakan bakteri patogen Erwinia carotrova. Jumlah isolat endofit yang berhasil diisolasi berjumlah 8 isolat (4 isolat dari daun Laban dan 4 isolat dari kulit batang Laban). Karakterisasi dilakukan pada 8 isolat endofit yang dihasilkan bahwa isolat memiliki ciri-ciri yang berbeda baik secara makroskopis, mikroskopis, dan semua isolat endofit dari tanaman Laban menghasilkan enzim katalase (uji +). Uji Bakteri endofitÂ  terhadap bakteri patogen diperoleh 7 isolat memiliki daya hambat terhadap bakteri Erwinia carotrova.
ELEKTRODA SUPERKAPASITOR DARI KARBON AKTIF BIOMASSA
Authors: Prayogatama Adhi
Published: April 2022

Superkapasitor adalah jenis kapasitor elektrokimia yang dapat digunakan untuk menyimpan energi dengan kapasitas tinggi dikarenakan kemampuan dari sifat kepadatan daya danÂ  siklus daya tahan yang dimilikinya tinggi serta tahan lama. Superkapasitor terdiri dari beberapa susunan lapisan, salah satu lapisannya berupa elektroda. Bahan pembuatan elektroda superkapasitor beragam seperti karbon aktif yang terbuat dari bahan biomassa yang dikarbonisasi dan dilanjutkan dengan perlakuan aktivasi secara kimia dan fisika. Proses aktivasi pada bahan hasil karbonisasi dimaksudkan untuk memberikan kemampuan yang lebih baik dari sisi penyerapan akibat dampak dari bertambahnya luas permukaan bahan sehingga akan mempengaruhi nilai kapasitansi spesifik elektroda superkapasitor berbasis bahan biomassa karbon aktif, selain itu besarnya konsenterasi aktivator yang digunakan juga dapat mempengaruhi nilai kapasitansi spesifik. Dalam paper ini akan dikaji terkait metode dan uji karakterisasi terhadap beberapa contoh bahan biomassa karbon aktif dengan menggunakan variasi ukuran partikel bahan, konsenterasi aktivator dan rasio dari campuran aktivator terhadap bahan.
PENYISIHAN COD DAN NITROGEN TOTAL PADA LIMBAH CAIR SAWIT MENGGUNAKAN Chlorella sp. YANG DIIMOBILISASI DALAM FLAT-FOTOBIOREAKTOR
Authors: Elystia Shinta
Published: April 2022

Limbah cair minyak sawit masih menjadi persoalan di Indonesia, tingginya kandungan organik jika tidak dilakukan pengolahan menyebabkan pencemaran lingkungan, sehingga diperlukan pengolahan lanjutan salah satunya menggunakan mikroalga Chlorella sp. yang diimobilisasi dalam flat-fotobioreaktor. Mikroalga Chlorella sp. dapat dimanfaatkan untuk pengolahan limbah POME karena berpotensi sebagai nutrien untuk pertumbuhan alga khususnya pada reaksi fotosintesis karena mengandung bahan organik yang masih tinggi. Tujuan penelitian ini Menghitung efisiensi penyisihan COD, nitrogen total limbah cair sawit didalam flat-fotobioreaktot dengan variasi konsentrasi limbah dan sumber cahaya yang berbeda. Imobilisasi sel Chlorella sp. dilakukan menggunakan kalsium alginat untuk membentuk bead alga. Pada Penelitian ini konsetrasi limbah POME divariasikan 50%, 75%, dan 100% (v/v) dan variasi sumber cahaya yang berasal dari cahaya matahari dan cahaya lampu dengan intensitas cahaya 5000Â±300 lux dan fotoperiode 12:12 jam. Hasil Penelitian menunjukkan bahwa efisiensi penyisihan limbah cair sawit tertinggi pada konsentrasi limbah 50% (v/v) menggunakan sumber cahaya buatan dengan densitas maksimum mencapai 1,93 x 107 sel mL-1 dan mampu menyisihkan COD, dan nitrogen total masing-masing yaitu 80% dan 84,93% pada hari ke 7.
CORAL POINT COUNT WITH EXCEL EXTENSIONS (CPCE) SOFTWARE: CORAL REEF CONDITION AT SMALL ISLANDS IN INDONESIA
Authors: Utami Risnita Tri , Yulfiperius Yulfiperius , Supadminingsih Fahresa Nugraheni , Saputra Julian
Published: April 2022

Coral reefs are marine ecosystem that provide homes at less 25% of all marine species. In the last decade, the use of Underwater Photo Transect (UPT) methods for coral reef monitoring has gained increased popularity. This study aimed to monitoring of coral reef condition at Dua Island, Tikus Island, Belanda Island, and Dapur Island. This study used Coral Point Count with Excel extensions (CPCe) software, to increase the efficiency of coral reef monitoring efforts. Photo transects were conducted by scuba diving. Coral reef community image was capture for every 1m across 50m transect line. A total of 30 random point samples was selected for each photo frame. Multiple photo frame were combineÂ  and for each point coded according to the code of each category, biota, and substrate at the random point. The results showed that the condition of the coral reefs in Bengkulu was in the fair to good category, while the condition of the coral reefs in the Seribu Islands was in the poor to fair category. The most common coral genera found in Bengkulu are Porites and Pocillopora, while in the Seribu Islands are Porites and Acropora.
Support Vector Machine Untuk Pengenalan Bentuk Manusia Menggunakan Kumpulan Fitur Yang Dioptimalkan
Authors: Wenda Alex
Published: April 2022

Artikel ini meneliti penerapan sebuah pendekatan pembelajaran mesin bernama Support Vector Machine (SVM) untuk pengenalan bentuk manusia dan bukan manusia. Banyak penelitian telah menunjukkan bahwa kontur siluet sebuah bentuk mengandung informasi bentuk yang esensial. Oleh karena itu, sebuah skema yang cocok, yang kami namai sebagai profil pusat, dikembangkan yang merepresentasikan jarak euclidean antara pusat bentuk dan piksel batas bentuknya. Profil pusat 100 bentuk manusia dan non manusia pada interval 10Â° diekstraksi dan menghasilkan 36 profil fitur pusat. Profil fitur yang terekstraksi ini kemudian dianalisa dan dikenakan ke proses seleksi fitur untuk mengoptimalkan jumlah profil fitur yang digunakan. Ada dua metode yang digunakan dalam penelitian ini yaitu metode statistik analisis varian (ANOVA) dan metode forward feature selection. Fitur terpilih diatur dari kedua metode tersebut dan digunakan sebagai input untuk SVM. Secara keseluruhan, kemampuan klasifikasi SVM ditemukan tidak berpengaruh lintas tiga fungsi inti yaitu linear, polynomial, dan basis radial gaussian. Metode ANOVA terbukti unggul dibandingkan metode forward feature selection. Setelah dipertimbangkan semuanya, efektifitas SVM sebagai pengklasifikasi terconfirmasi. Kinerja yang sempurna bisa dicapai ketika SVM diberikan sekumpulan fitur yang teroptimasi sebagai input. Temuan dalam penelitian ini membuktikan potensi yang besar dari penerapan SVM pada pendeteksian manusia untuk berbagai penerapan.
IDENTIFIKASI DAN KARAKTERISASI SENYAWA METABOLIT SEKUNDER TUMBUHAN ENDEMIK ASAL DESA FATUNISUAN KABUPATEN TIMOR TENGAH UTARA
Authors: Sila Vinsensia Ulia Rita , Masing Feliksitas Angel , Santiari Made
Published: April 2022

Desa Fatunisuan terletak dalam wilayah Kecamatan Miomafo Barat, Kabupaten Timor Tengah Utara, Provinsi Nusa Tenggara Timur yang identik dengan topografi berbukit-bukit dan terletak di dataran tinggi. Berdasarkan hasil riset, di Kecamatan Miomaffo Barat secara menyeluruh terdapat jenis tanamanÂ  jeruk keprok dan umbi-umbian. Riset khusus untuk mengidentifikasi dan menginventarisasi jenis tumbuhan endemik dan bemanfaat di Desa Fatunisuan belum pernah dilakukan hingga saat ini. Tujuan penelitian ini adalah untuk mengidentifikasi jenis tumbuhan endemik dan bermanfaat dari kelompok tumbuhan Â tingkat tinggi (phanerogamae) dan karakterisasi senyawa metabolit sekunderÂ  yang terkandung dalam ekstrak daun tumbuhan tersebut. Metode penelitian yang digunakan merupakan mix method antara eksplorasi dan eksperimen. Metode eksplorasi untuk mengidentifikasi jenis tumbuhan, dan metode eksperimen dengan uji skrining fitokimia untuk karakterisasi jenis senyawa metabolit sekunder. Hasil penelitian ini menunjukan bahwa di desa Fatunisuan terdapat tujuh jenis tumbuhan yang endemik dan bermanfaat bagi masyarakat desa setempat yakni Santalum album var. largifolium Rudjiman et Adrie, Santalum album L. var. album ziphus mauritiana, Pinus merkusii, Piper majusculum Blume, Coffea arabica, Arenga pinnata, dan Aleurites moluccana.Â  Hasil karakterisasi jenis senyawa metabolit dari ke tujuh ekstrak daun tumbuhan tersebut dapat diketahui bahwa ekstrak daun Santalum album var. largifolium Rudjiman et Adrie maupun Santalum album L. var. album ziphus mauritiana dan ekstrak daun Coffea arabica memiliki kandungan lima jenis senyawa metabolit sekunder yaitu Alkaloid, Fenolik, Saponin, Flavanoid, dan Triterpenoid. Ekstrak pelepah daun Arenga pinnata maupun daun Aleurites moluccana memiliki kandungan lima jenis senyawa metabolit sekunder yaitu Alkaloid, Fenolik, Steroid, Saponin, dan Flavanoid. Sementara itu ekstrak daun Pinus merkusii memiliki kandungan enam jenis senyawa metabolit sekunder yang terdiri dari Alkaloid, Fenolik, Saponin, Flavanoid, Triterpenoid, dan Tanin. Sedangkan ekstrak daun Piper majusculum Blume memiliki kandungan lima jenis senyawa metabolit sekunder yaitu Alkaloid, Fenolik, Steroid, Saponin, dan Tanin
Kelimpahan dan Keanekaragaman Siput Laut Opisthobranch di Bangsring Underwater dan Pulau Tabuhan, Banyuwangi
Authors: Rosyid Abdur , Krisanti Majariana , Yulianto Gatot
Published: April 2022

Siput laut memiliki manfaat ekologi, ekonomi, dan menjadi objek penting dalam penelitian di berbagai disiplin ilmu. Sebagai bagian dari gastropod yang berasosiasi dengan organisme sesil, siput laut menjadi indikator yang baik untuk kesehatan habitat di perairan. Belum ada penelitian mengenai siput laut di Bangsring Underwater dan Pulau Tabuhan. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis kelimpahan dan keanekaragaman spesies siput laut (Opisthobranchia) di lokasi tersebut. Pengambilan data dilakukan di 9 lokasi penyelaman. Data siput laut diambil menggunakan belt transect dan fotografi bawah air di kedalaman 0 sampai 10 m (dikateogikan sebagai dangkal) dan >10 sampai 18 m (dikategorikan sebagai dalam). Identifikasi dilakukan melalui foto bawah air dengan melihat morfologi, warna, bentuk rhinophores, notum (punggung), kaki, dan insang. Waktu pengambilan data dimulai pada bulan November sampai dengan Desember 2020. Hasil penelitian menunjukkan bahwa ditemukan 85 spesies dalam 19 famili dan 3 ordo (Nudibranchia, Sacoglossa, dan Cephalaspidea). Famili paling beragam adalah Chromodorididae (29% dari total spesies) dan Phyllidiidae (19%) dari ordo Nudibranchia. Frekwensi temuan spesies terbanyak adalah spesies P. pustulosa dan P. briareum. Keanekaragaman tertinggi terdapat di Rumah Apung dangkal dengan nilai Hâ€™= 4,2Â  sedangkan keanekaragaman terendah terdapat di Tabuhan Selatan dengan nilai Hâ€™= 1,0. Kelimpahan tertinggi terdapat di Zona inti dangkal dengan nilai 23 ind/200 m2, sedangkan kelimpahan terendah terdapat di Tabuhan Selatan, Tabuhan Timur, dan Tabuhan Barat dengan nilai yang sama yaitu 1 ind/200 m2.
ANALYSIS OF FORMALIN CONTENT IN SOME FRESH FISH IN PARLUASAN TRADITIONAL MARKETS PEMATANGSIANTAR CITY
Authors: Simanjuntak Hendra , Silalahi Mastiur Verawaty
Published: April 2022

Fish is considered a key nutrient for a balanced diet for the growing population Â around the world..fish is also superior because it is the highest natural source of omega 3 fatty acids. These fishery products are susceptible to quality degradation, therefore many use formalin as a fish preservative. The purpose of this study was to determine the level of formalin in some fresh fish. The method used is a quantitative test of formalin levels with a formalin test kit and descriptively. The sample used 5 types of fresh fish from 10 respondents. And the results of this study were that the five fresh fish samples contained formalin because the five fish were â€œone the fishingâ€ fish. The most formalin content found in snapper was 3.42 g/ml.
Diagnóstico de las causas de rezago y deserción en alumnos de la Facultad de Ciencias de la UNAM
Authors: Arnaud Bobadilla Alfredo Juan , Sánchez Villarreal Francisco , Galindo Miranda Nora Elizabeth , Franco Bodek Daniela , Ruiz Gutiérrez Rosaura
Published: April 2022

Debido a los históricos índices de rezago y deserción que se presentan en las carreras de la Facultad de Ciencias de la Universidad Nacional Autónoma de México (UNAM), la dirección conformó una comisión para que se realizara un estudio de las causas de dicho fenómeno. El objetivo de este trabajo es exponer los resultados del diagnóstico mencionado, así como hacer una serie de propuestas para mejorar los índices de rezago y deserción de los estudiantes de la Facultad de Ciencias. Este diagnóstico se realizó por medio de una encuesta y el análisis de sus respuestas durante las sesiones de los grupos focales que se conformaron para el estudio. Los resultados obtenidos muestran, en términos generales, que, en opinión de los profesores de la UNAM, sus estudiantes no cuentan con buenos hábitos de estudio; no vienen suficientemente bien preparados del bachillerato, y cuentan con habilidades de escritura y comprensión lectora deficientes. Por otro lado, 64 % de los profesores no conocen la oferta anual de cursos de actualización didáctica, y casi 60 % de los profesores considera estos cursos muy necesarios. Al final del estudio, con base en los resultados recogidos, se presentan propuestas para abatir el rezago escolar como alternativas a las clases magistrales que actualmente son la metodología didáctica preponderante en los cursos.
Procedure for finding an integral indicator of regional social development
Authors: Tretyakova L. A. , Lisova E. V.
Published: April 2022

The article is devoted to the social development of Russian regions. The authors describe the procedure for finding its integral indicator. It is proposed to use the statistical collection «Regions of Russia, socio–economic indicators» as a source of information. The algorithm for determining the integral indicator of regional development is described, the formula for its calculation is given. The features and disadvantages that are possible when using numerical indicators of social orientation are determined. A practical example of calculating an integral indicator for the regions of the Central Federal District is given, calculated data on the level of social regional development are given. The analysis of the presented data is carried out, conclusions are drawn about possible directions and prospects for further research in temporal and spatial aspects.
From the Ground Up: Tactical Mobilization of Grief in the Case of the Afzaal-Salman Family Killings
Authors: Jiwani Yasmin
Published: April 2022

This paper focuses on the murders of the Afzaal-Salman family in London, Ontario (Canada) in June, 2021. Immediately after the murders were reported, several hashtags on different social media emerged, focusing attention on the victims and commenting on the Islamophobia that resulted in their deaths. Through a critical discourse analysis of one of these hashtags, #OurLondonFamily that was used on Twitter and Instagram, this paper examines how grief becomes a conveyor of subjugated histories and experiences of Islamophobia, and a conduit through which the politics of identity surface. The paper argues that social media platforms like Twitter and Instagram allow for affective expressions of grief, demonstrating a networked sociality and articulating politics of opposition from the ground up. The affective publics that are engendered include activists and NGOs, whose social worthiness, high number of followers, coordinated and committed attention provides traction that allows for collective grieving that can be politically mobilized. As tactical trajectories, social media posts rupture the spectacle of a harmonious multicultural Canada.