bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementasi Model Integer Programming Dalam Mengoptimalkan Produksi “Kurma Babe” Kota Kupang
Authors: Adoe V S , Leuhoe Y J I
Published: December 2021

Integer programming menrupakan bentuk atau model matematis dari pemrograman linear yang mengharuskan atau mensyaratkan hasil yang diperoleh adalah bilangan bulat tak negatif. Dalam penelitian ini, peneliti menggunakan model integer programming untuk menganalisis hasil produksi yang optimal dari produk “KURMA BABE”. UD. Serba Karya adalah salah satu UKM di Kota Kupang yang memproduksi “KURMA BABE” dengan  2 model atau variasi yaitu Kurma Biasa dan Kurma Spoon. Kendala yang dihadapi adalah pemilik usaha belum melakukan perencanaan produksi secara tepat terkait penggunaan atau kombinasi sumber daya atau input produksi sehingga produk yang dihasilakn belum optimal. Hal ini tentunya akan berpengaruh terhadap keuntungan yang diperoleh tidak maksimal. Sehingga dengan model integer programming dan penggunaan POM-QM For Windows V4 sebagai alat bantu analisis diperoleh bahwa hasil optimalnya adalah X1 (Kursi Biasa) = 4 unit, X3 (Meja Biasa) = 2 unit dengan Z = 18 unit (3 set “KURMA BABE”), dengan keuntungannya sebesar Rp. 1.050.000,- sekali produksi.

Kata Kunci : Integer Programming, Produksi Optimal
Skrining Fitokimia dan Uji Aktivitas Antibakteri Fraksi Etil Asetat dan n-Heksana dari Daun Mangga Kasturi (Mangifera casturi Kosterm.)
Authors: Lestari Dwi , Fitriani Desy , Anngraeni Serli
Published: December 2021

Kasturi mango (Mangifera casturi Kosterm.) is a typical mango of South Kalimantan. Kasturi mango leaves are reported to have antioxidant activity and are potential for treating various diseases, including diseases related to antibacterial. This study examines the antibacterial activity of ethyl acetate fraction and the n-hexane fraction of mango musk leaves on bacteria that cause acne. Experimental research started with plant determination, making extracts and fractions, phytochemical screening, and antibacterial testing against Staphylococcus aureus and Propionibacterium acnes using the disk diffusion method. The study results found that the ethyl acetate and n-hexane fractions had weak antibacterial activity against S. aureus and P. acnes bacteria, which cause acne
Limbah Sabut Kelapa Muda (Cocos nucifera L.) sebagai Sumber Pewarna Kain
Authors: Sumarni Ni Ketut , Soleh Umma Fahriah , Nurhaeni  , Prismawiryanti
Published: December 2021

Young coconut coir (Cocos nucifera Linn.) waste has the potential to be processed into a useful product, namely as a source of natural dyes, especially in cotton fabrics. Processing is carried out through a maceration process for 72 hours using 96% ethanol as solvent. The obtained extract was applied on cotton cloth with various concentrations of the extract solution, 5, 10, 15, 20, and 25%, and various soaking times of the fabric in the extract for 60, 90, 120, 150, and 180 minutes. The extract was analyzed using Uv-Vis Spekctrofotometer it showed that the ethanol extract or dye that is absorbed into the cotton fabric with various concentrations is 3.43, 4.82, 6.61, 7.79, and 9.03%, respectively. The various soaking times show that on the other hand that the extract absorbed into the fabric was successfully obtained around 7.75, 9.64, 10.81, 11.65, and 12.04%. The results show that the concentration of the extract solution and the increasing length of soaking time can increase the percentage of extract or dye absorbed in cotton fabrics
Effectiveness of Islamic Monetary Policy Transmission on Inflation and Economic Performance
Authors: Bawono Anton , Laksana Khoir Umi , Nabila Rifda , Himmati Risdiana
Published: December 2021

The most crucial part for the economic development of a country is maintaining the stability of inflation to create a positive climate for economic and business activities. A number of efforts can be performed to achieve stable inflation and increase economic growth by designing monetary policy incorporating the variables of Bank Indonesia Sharia Certificate (SBIS), Islamic Interbank Money Market (IIMM), and Financing. Drawing on this issue, the in-hand study aims to examine the effectiveness of Islamic monetary policy transmission, using the instruments of SBIS, IIMM, and Financing, on inflation and economic performance (GDP) from the period of January 2011 to December 2020. Using secondary data, this study employs VAR/VECM approach by the assistance of Eviews program. The results reveal that in the short term period, inflation is significantly influenced by the IIMM, while GDP t is affected by the GDP t-1 and financing activities. In the long term period, both inflation and GDP are determined by SBIS and financing activities. In general, this study results in a conclusion that the variables of IIMM, financing activities, and GDP t-1 influence the economic performance both in short and long term periods. These results contribute as fruitful insights to developing financial strategies and monetary policy to maintain stable inflation and improve economic performance of a country.
DEPARTURE FROM QUASI-UNIFORM ASSOCIATION MODEL IN ORDERED SQUARE CONTINGENCY TABLES
Authors: AKTAŞ Serpil , YILMAZ Ayfer Ezgi
Published: December 2021

The Uniform Association (UA) and Quasi-Uniform Association (QUA) models are used for analysis of two-way square contingency tables with ordered categories. When the QUA model does not fit the data, one wants to measure the degree of departure from the quasi-uniform association model. The degree of the departure from the model is calculated by usingthe power divergence statistics. In this study, as an alternative to measures in the literature, a measure to estimate the degree of departure from the QUA model is suggested. This suggested measure allows us to compare the several R×R tables in terms of the departure from the model. The measures are compared by the simulation study and discussed by three unaided distance vision data.
Heterologous Overexpression of Sup35 in E. coli Leads to Both Monomer and Complex States
Authors: Wang Mingyang , Wang Xiao , Cheng Zhenyun
Published: December 2021

The heterologous overexpression states of prion proteins play a critical
role in understanding the mechanisms of prion-related diseases. We
report herein the identification of soluble monomer and complex states
for a bakers’ yeast prion, Sup35, when expressed in E. coli. Two
peaks are apparent with the elution of His-tagged Sup35 by imidazole
from a Ni affinity column. Peak I contains Sup35 in
both monomer and aggregated states. Sup35 aggregate is abbreviated as
C-aggregate and includes a non-fibril complex comprising Sup35
aggregate-HSP90-Dna K, ATP synthase β unit (chain D), 30S ribosome
subunit, and Omp F. The purified monomer and C-aggregate can remain
stable for an extended period of time. Peak II contains Sup35 also in
both monomer and aggregated (abbreviated as S-aggregate) states, but the
aggregated states are caused by the formation of inter-Sup35 disulfide
bonds. This study demonstrates that further assembly of Sup35 non-fibril
C-aggregate can be interrupted by the chaperone repertoire system in
E. coli.
Errata in the article: Upgrading fuel potentials of waste biomass via hydrothermal carbonization
Authors: Editorial E
Published: December 2021

This article has been published under the category Technical paper instead
of Original scientific paper by mistake made by the Editorial Office of the
journal Hemijska industrija during the proofreading process. Apologies are
offered to authors and readers of the journal Hemijska industrija.
Corrigendum in the article: Extraction of ammonium nickel sulfate hexahydrate by hydrometallurgical process from the hyperaccumulating plant Odontarrhena muralis - case study from Serbia
Authors: Editorial E
Published: December 2021

nema
Solution of Burgers’ equation appears in fluid mechanics by multistage optimal homotopy asymptotic method
Authors: Wang Fuzhang , Ali Shah , Ahmad Imtiaz , Ahmad Hijaz , Alam Kamran , Thounthong Phatiphat
Published: December 2021

In this article, we approximate analytical solution of Burgers? equations using the Multistage homotopy asymptotic method which are utilized in modern physics and fluid mechanics. The suggested algorithm is an accurate and simple to-utilize semi-analytic tool for non-linear problems. In the current research we investigation the efficiency and accuracy of the method for the solution of non-linear PDE for large time span. Numerical comparison with the variational iteration method shows the efficacy and accuracy of the proposed method.
Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure
Authors: Tabasevic Ilija , Jovanovic Rastko , Milanovic Dragan
Published: December 2021

Safe storage of pharmaceutical products is of great importance due to potential hazards for human health. The aim of this study was to assess the ability of pharmaceutical storage to recover design temperature during ventilation system recovery. The performed CFD simulations showed good agreement with experimental temperature measurements. Numerical results allowed in-depth analysis of flow field and temperature distribution inside the storage. It was discovered that the flow field is highly non-uniform, which consequently leads to an uneven temperature distribution of pallets with products. However, a high inlet mass-flow rate ensured that all pallets reach the designed temperature.
Comparative investigation of phase change material on heat transfer characteristics under theoretical and practical periodic temperature boundary
Authors: Wang Yong , Zhang Zhongsheng , Liu Ting , Fan Yunsheng , Dai Jingmin
Published: December 2021

In this paper, heat transfer characteristics of phase change material in rectangular containers are numerically analyzed. The inclination angles of the container refer to 0?, 90?, and 180?. Both theoretical and practical periodic temperature boundary conditions are taken into consideration, in which the periodic temperature boundary conditions include 50-80?C and 65-80?C. The comparison study is carried out through the liquid fraction and temperature histories during the heat transfer process under these different boundary conditions. It is indicated that there are large differences between the calculated results under the theoretical and the practical periodic temperature boundary conditions when the temperature boundary is 50-80?C, while the theoretical and the practical periodic temperature boundary conditions of 65-80?C have relatively little effect on the numerical results of the heat transfer process of the phase change material. Furthermore, compared with the temperature increasing stage, the numerical results calculated under the theoretical and the practical boundary conditions have more significant differences in the temperature decreasing stage. The research conclusion of this paper can provide a theoretical basis for the application of phase change material under periodic temperature boundary conditions.
Technical requirements analysis of integrated paralleled-loop exhaust air heat pump system applied to ultra-low energy building in different climatic regions of China
Authors: Ji Xiaoya , Ma Guoyuan , Zhou Feng , Wang Lei , Wu Guoqiang , Liu Shuailing
Published: December 2021

Based on the simulation results of the typical rural ultra-low energy building (ULEB) in five different climatic regions of China, three indicative technical parameters for paralleled-loop exhaust air heat pump (PEAHP) R&D which are nominal heating-cooling capacity, maximum required fresh air to return air ratio (MFRR) and system energy efficiency grades were calculated and summarized according to the demand of indoor thermal comforts by using statistic method. The nominal heating-cooling capacities were determined according to the peak loads, which are 6.84-2.01 kW, 5-2.96 kW, 3.9-4.6 kW, 3.08-5.02 kW, and 3.4-0.46 kW in the ULEB of Harbin, Beijing, Shanghai, Guangzhou, and Kunming, respectively. To ensure both thermal comforts and energy conservation, during the heating season, full fresh air supply is suggested in Beijing and the 1:0.5 MFRR is suggested in Harbin, Shanghai, Guangzhou, and Kunming. During the cooling season, the 1:5 MFRR is suggested in Shanghai and Guangzhou, the 1:3, 1:1.5, and 1:0.5 MFRR are suggested in Harbin, Beijing and Kunming, respectively. The PEAHP energy efficiency grades 1~5 are 7.92~11.7, 7.58~11.5, 7.5~11.35, 6.12~9.27, and 4.64~7.03 during the heating season of Harbin, Beijing, Shanghai, Guangzhou, and Kunming, respectively, and are 2.33~3.54, 3.93~5.96, 4.61~6.98, 4.62~6.99, and 2.04~3.1 for the cooling season, respectively.
Combustion chamber geometry and fuel supply system variations on fuel economy and exhaust emissions of GDI engine with EGR
Authors: Nagareddy Shivakumar , Govindasamy Kumaresan
Published: December 2021

In this study, the combustion chamber geometry for spray-guided, wall-guided, and air-guided combustion strategies were fabricated. The piston crown shape and the cylinder head in each combustion chamber geometry was machined by fixing the fuel injector and spark plug at proper positions to obtain swirl, turbulence, and squish effects for better mixing of fuel with air and superior combustion of the mixture. Conducted tests on all the three modified gasoline direct injection engines with optimized exhaust gas recirculation and electronic control towards fuel injection timing, the fuel injection pressure, and the ignition timing for better the performance and emissions control. It is clear from the results that NOx emissions from all three combustion modes were reduced by 4.9% up to 50% of loads and it increase for higher loads due to increase of in-cylinder pressure. The fuel consumption and emissions showed better at 150 bar fuel injection pressure for wall-guided combustion chamber geometry. Reduced HC emissions by 3.7% and 4.7%, reduced CO emissions by 2% and 3.3%, reduced soot emissions by 6.12% and 10.6%. Reduces specific fuel consumption by about 10.3% and 13.3% in wall-guided combustion strategy compare with spray-guided and air-guided combustion modes respectively
GRAMMATICALIZATION OF CONTRACTED COMPOUND VERB FORMS IN MALOKARACHKINSKIJ DIALECT OF CHUVASH LANGUAGE
Authors: Рыжкова Елизавета Андреевна
Published: December 2021

Глаголы jar/jer ‘пускать’, jol ‘остаться’, il ‘брать’ и yk ‘падать’ в малокарачкинском говоре чувашского языка могут образовывать сложные глаголы — конструкции, состоящие из двух глагольных форм, но описывающие единую ситуацию. В малокарачкинском говоре в таких конструкциях происходит фонетическое явление стяжения: xəra za yk r ë (испугаться CV_SIM падать PST 3SG)> xəra z=yk r ë (испугаться CV_SIM падать PST 3SG) ‘упал(а)’. Стяжённые формы сложных глаголов отличаются от других сложноглагольных конструкций не только фонетически (выпадение последнего гласного деепричастия на -sa, выпадение начального j вершины, чередование гласных в основе вершины jar/jer ‘пускать’), но и по ряду морфосинтаксических признаков (место присоединения аффиксов каузатива и аттенуатива).
На то, что появление стяжённых форм — это часть процесса грамматикализации сложных глаголов, указывает и то, что глаголы, не образующие стяжённых форм, но обладающие в составе сложноглагольной конструкции грамматическим значением, так же претерпевают фонетические изменения. В статье разобран пример глагола kaj ‘уходить’, у которого в сложноглагольной конструкции, как показал эксперимент с чтением диалектного текста, часто озвончается первый согласный. Это сближает глагол kaj ‘уходить’ с аффиксами, согласные в которых в малокарачкинском говоре обычно озвончаются в интервокальной позиции.
В статье также рассматриваются семантические свойства глагола yk ‘падать’, образующего стяжённые сложные глаголы. Несмотря на общее грамматическое значение этого глагола в составе сложногагольной конструкции — вхождения в состояние или процесс, глагол yk ‘падать’ сохраняет некоторые элементы своего лексического значения, которые влияют на его сочетаемость как вершины сложного глагола: вхождение в состояние или процесс может быть только мгновенным, конструкции с пунктивными глаголами приобретают значение неожиданности и/или интенсивности, глаголы разрушения без семантики падения и глаголы с семантикой увеличения и повышения не могут сочетаться с yk ‘падать’.
Материалы для статьи были собраны автором в экспедициях в село Малое Карачкино Чувашской Республики, кроме того используются примеры из экспедиционного корпуса и из литературы, приводятся некоторые сравнения с литературным чувашским языком.

The article presents the results of the research of the contracted forms of compound verbs in Malokarachkinskij dialect of Chuvash language. Four verbs jar/jer ‘let’, jol ‘remain’, il ‘take’ and yk ‘fall’ can be the heads of the contracted forms of compound verbs. These forms differ from the full ones not only phonetically but also morphologically. At the same time, certain semantic features of these four verbs remain present even when they become heads of the compound verb constructions, thus restraining their distribution.
Diagnosis of Student Misconception in Heat Material Using Tier Test
Authors:   Universitas Islam Darul ‘Ulum, Indonesia, Ekawati Haryono Heny , Aini Khafidhoh Nurul ,   Universitas Islam Darul ‘Ulum, Indonesia, Samsudin Achmad ,   Universitas Pendidikan Indonesia, Indonesia, Siahaan Parsaoran ,   Universitas Pendidikan Indonesia, Indonesia
Published: December 2021

Students, basically, possess prior knowledge or conception regarding a concept, even before they study it formally in the school. Sometimes, their conceptions are inconsistent with scientific concept and resulting misconceptions. Some studies found that students encounter misconception of some concepts, particularly in Physics. Three-tier Test is an instrument used to identify student’s misconception and lack of knowledge. A misconception should be differentiate from a lack of knowledge because remediation of a misconception is more difficult than remediation of a lack of knowledge. Besides, both of them may entail different instructional methods. This study focused on diagnosing students’ misconceptions of heat using Three-tier Test. The study is aimed to explain in what concepts the students encounter misconceptions of heat and to explain the prevalence of students’ misconceptions of heat. The method used in this study was a descriptive-exploratory research with non-experimental design. The sample of this study was 150 Grade VII students of five different State Junior High School in Lamongan, East Java. The data was collected through written test using Three-tier Test and administered once. The results showed that students encounter misconceptions in 6 concepts of heat comprising energy, heat, temperature, mass, specific heat capacity, vaporizing, boiling, pressure, boiling point, freezing, and freezing point. Moreover, the results showed that 88% of the students encounter misconception, where the most frequently appeared is misconception about energy and heat that is objects could have a certain quantity of heat in them.
The Effectiveness of Problem-Based Electronic Worksheet to Increase Student Creativity in Hooke’s Law
Authors:   Physics Education Graduate Program, Lampung University, Indonesia, Nyeneng I Dewa Putu , Yudha Reza Afrian ,   Physics Education Graduate Program, Lampung University, Indonesia, Maulina Hervin ,   Physics Education Graduate Program, Lampung University, Indonesia
Published: December 2021

This study aims to determine the effectiveness of problem-based electronic worksheets to increase students’ creativity in Hooke's law at SMAN 2 Bandarlampung. The population is all students of class XI MIPA, and the sample is 20 student of XI MIPA 4, with group pretest-posttest research design. The data analysis techniques used are normality test, paired sample t-test, N-Gain test, and effect size test. The difference between the average pretest and posttest is 7.4. The N-Gain score obtained is 0.2 with low criteria. The results of the effect size test obtained a score of 0.8 with the criteria of having a large effect. Based on the results of the study, it can be concluded that problem-based electronic worksheets can increase student’s creativity.
Implementation of Learning Media Using Augmented Reality Technology for Senior High School Students
Authors:   Department of Education, Yogyakarta State University, Indonesia, Fauziah Rosynanda Nur , Sulisworo Dwi ,   Department of Physics Education, Ahmad Dahlan University, Indonesia
Published: December 2021

This study was to determine the use of learning media using augmented reality technology which is applied to senior high school students. The research method used in this research is quasi-experimental with the research design using treatment before and after the use of the learning media. Quasi experimental as an experiment that has treatment, impact measurement, experimental unit, but does not use random assignment to create comparisons in order to conclude changes caused by treatment. The results of the research conducted for the results of the pre-test or before the students received treatment were 69,2%, while the results of the post-test or after the students received treatment were 91%. Then for the average value of the combination of the two tests can be said to be good with the use of learning media using Augmented Reality technology, which is 80,1%. From these results it can be concluded that the application of learning media using Augmented Reality technology provides changes to student learning outcomes in terms of understanding the concept of physics, thus the application of learning media with Augmented Reality technology is successfully applied to high school students for physics subjects.
Pelatihan Pembuatan Video Pembelajaran Sebagai Konten Online Learning Guru di Kabupaten Lampung Timur
Authors: Saputra Bayu
Published: December 2021

Dunia pendidikan berupaya mencari solusi pembelajaran yang efektif dan mampu diterapkan sesuai dengan kondisi saat ini. Indonesia menjadi bagian terdampak corona virus sejak bulan Mei 2020. Sehingga kebijakan pemerintah mengharuskan pembelajaran dilakukan dari rumah masing masing untuk menekan penyebaran virus yang semakin masif menyebar akibat kontak fisik. Ketidak siapan guru dan siswa dalam menghadapi kondisi yang secara mendadak dialami ini memerlukan berbagai macam solusi dengan peningkatan kompentsi guru melalui pelatihan pembuatan video. Tujuan dari pelatihan ini adalah mingkatkan keterampilan guru dalam merencanakan dan membuat video pembelajaran sebagai konten online learning. Pelatihan akan dilakukan melalui metode ceramah, simulasi, diskusi dan praktik, dan latiha, tahap pertama pemaparan tentang media pembelajaran online yang efektif, kemudian dilanjutkan dengan praktik dan pendampingan. Evaluasi dilakukan diawal dan diakhir kegiatan pelatihan, selanjutnya hasil tes dianalisis dan akan diperoleh gambaran ketercapaian pengabdian. Selain itu digunakan lembar observasi dan angket yang dilakukan oleh mahasiswa. Hasil analisis yang diperoleh digunakan sebagai kesimpulan keberhasilan suatu pelatihan. Hasil pelatihan ini diperoleh peningkatan pemahaman dan keterampilan guru dalam mempersiapkan dalam menyusun video pembelajaran dengan peningkatan rata rata 28,68% . Terdapat peningkatan guru dalam pembuatan video pembelajaran secara mandiri sebagai konten online leraning di sekolah masing-masing. Guru memperoleh peningkatan pengetahuan dalam melaksanakan pembelajaran pada masa pandemic Covid-19.

Keywords.Pelatihan, Pembuatan Video Pembelajaran, Peningkatan Hasil
Pentingnya Penerapan Nilai-Nilai Pancasila Pada Remaja di Era Society 5.0
Authors: Masyithoh Dewi , Bintari Delita Putri , Pratiwi Dwi Mulya
Published: December 2021

Di Era Society 5.0 erat kaitannya dengan kemajuan teknologi dan informasi yang sangat canggih dimana remaja pada masa ini juga merasakan dampaknya.Permasalahan yang dialami saat ini adalah memudarnya pemahaman tentang pancasila dikalangan remaja yang sangat berpotensi masuknya paham-paham yang bertentangan seperti muncul banyaknya kriminalitas, kolusi dan nepotisme, radikalisme, korupsi,kejahatan seksual, kehidupan yang konsumtif, kehidupan politik yang tidak produktif, dan lain sebagainya.Tentu itu akan menjadi ancaman bagi para generasi emas bangsa Indonesia. Remaja kini hanya sekedar hapal Pancasila saja namun tidak paham makna setiap nilai yang terkandung didalamnya.Bahkan saat ini jarang sekali yang mengamalkan dalam kehidupan sehari-hari.Melihat fakta yang terjadi dikalangan remaja saat ini, maka sudah seharusnya penanaman nilai Pancasila diterapkan sedini mungkin.Tujuan dari penelitian ini adalah untuk mengetahui pemahaman para remaja terhadap nilai-nilai pancasila beserta makna yang terkandung didalamnya dan mengetahui apakah nilai-nilai pancasila tersebut masih diterapkan dalam kehidupan bermasyarakat.Metode penelitan menggunakan pendekatan deskriptif kualitatif dengan teknik pengumpulan data dalam bentuk Google Form dimana tautannya ditujukan bagi remaja berusia 12-18 tahun.Hasil penelitian menunjukkan bahwa pancasila merupakan landasan negara, pedoman hidup serta kepribadian negara Indonesia yang berisi nilai-nilai kehidupan bernegara dimana jika telah diterapkan dapat membentuk karakter diri seseorang menjadi lebih baik.Kesimpulan penelitian ini adalah Pancasila sangat berpengaruh dalam menentukan masa depan di era society 5.0 ini dan perlu diketahui juga jika penanaman nilai Pancasila itu sangat perlu ditanamkan sejak dini guna mencapai tujuan tersebut, saat ini masih banyak juga remaja yang hanya mengetahui pelafalannya saja tanpa tahu makna yang terkandung dan cara penerapannya.
Introduksi Budidaya dan Fermentasi Rumput Packhong 1 sebagai Pakan Ternak di Desa Rantau Fajar Kecamatan Raman Utara Kabupaten Lampung Timur
Authors: Adhianto Kusuma , Liman - , Muhtarudin - , Wijaya Agung Kusuma
Published: December 2021

Tujuan dari kegiatan pengabdian masyarakat ini adalah introduksi budidaya dan teknologi fermentasi rumput Pakchong-1. sebagai pakan ternak sapi. Rumput ini merupakan hidrida dari rumput gajah   Rumput Pakchong pertama kali diperkenalkan di Thailand  oleh Dr. Krailas Kiyotthong, Departemen Peternakan  Kementerian Pertanian Thailand (Somsiri dan Vivanpatarakij, 2015). Dibandingkan rumput gajah, rumput Pakchong 1, mempunyai produktivitas dan kualitas yang lebih tinggi.  Disamping teknik budidaya, diintroduksikan juga teknologi pengawetan untuk rumput ini.  Dengan adanya pengawetan, diharapkan dapat mengatasi kebutuhan hijauan pada musim kemarau. Kegiatan pengabdian ini dilaksanakan  di Kelompok Tani Sidodadi Desa Rantau Fajar  di Kecamatan Raman Utara, Lampung   Timur. Manfaat yang didapat dalam kegiatan pengabdian adalah meningkatkan pengetahuan peternak tentang budidaya rumput Pakchong, dan juga  memahami teknologi pengawetan rumput. Kegiatan pembinaan kepada peternak dilakukan dengan cara sebagai berikut: 1) Penyuluhan, meliputi kegiatan ceramah mengenai budidaya rumput dan teknologi pengawetan. 2) Demostrasi demplot penanaman Rumput Pakchong-1, ;  dan 3. Demostrasi pengawetan hijauan dengan cara fermentasi atau yang lebih dikenal dengan silase. Pelaksanaan penyuluhan dilakukan pada tanggal, 13 Juni 2021 kegiatan penyuluhan dihadiri 10 orang petani yang tergabung dalam kelompok tani Sidodadi, materi yang disampaikan meliputi: 1. Teknik budidaya rumput pakchong 1. 2. Teknologi pengawetan hijauan. Setelah penyuluhan selesai, dilanjutkan dengan pembuatan demplot penanaman rumput Pakchong-1.  Penanaman ini dilakukan pada lahan petani dengan luas demplot sekitar 1200 m2.  Kegiatan penanaman diawali dengan pengolahan lahan, pemilihan bahan tanam, dilanjutkan dengan penanaman. Rumput yang telah tumbuh dengan baik selajutnya dipanen untuk dibuat pakan awetan berupa silase. Kegiatan pengabdian masyarakat ini dilanjutkan dengan kunjungan kedua ke lokasi pada tanggal 5 September 2021, dengan materi demonstrasi pembuatan silase. Pembuatan silase diawali dengan pencacahan rumput yang sebelumnya sudah ditanam pada penyuluhan pertama. Setelah dicacah, rumput tersebut dicampur dengan dedak, lalu dimasukkan ke dalam wadah tong plastic sambil dipadatkan.  Lama proses fermentasi sekitar 3 minggu.  Semua kegiatan pengabdian diikuti dengan antusias oleh anggota kelompok tani Sidodadi.
Pemberdayaan Masyarakat Pesisir dalam Rangka Pengembangan Desa Ekowisata di Desa Margasari, Kecamatan Labuhan Maringgai, Kabupaten Lampung Timur
Authors: Yanfika Helvi
Published: December 2021

Desa Margasari merupakan desa yang memiliki hutan mangrove dengan paling luas di Provinsi Lampung, sehingga dijadikan sebagai pusat kegiatan pengelolaan hutan mangrove. Sampai saat ini, Pengembangan ekowisata di Desa Margasari masih memiliki kendala terkait dengan pemeliharaan dan pengelolaan hutan mangrove yang biasa sehingga luas hutan mangrove banyak mengalami penurunan. Selain itu, potensi Desa Margasari terkait dengan hasil laut seperti ikan,udang, dan kepiting serta pantainya belum dikembangkan secara optimal dikarenakan terkendala ilmu pengetahuan, SDM dan teknolologi pengolahan hasil laut dan hasil hutan. Olehkarena itu, diperlukan program kegiatan yang dapat mengembangkan Desa Margasari menjadi desa ekowisata bahari. Tujuan pengabdian ini adalah untuk meningkatkan pengetahuan dan keterampilan masyarakat pesisir Desa Margasari: 1) mengenai teknologi dan budidaya pengelolaan hutan mangrove, 2) mengenai pemberdayaan masyarakat pesisir, 3)mengenai kewirausahaan dan teknologi pengolahan hasil laut dan hasil hutan mangrove menjadi produk olahan serta teknik pengemasan dan pemasaran produkolahannya. Tahap Persiapan Penyediaan Materi, Kegiatan Penyuluhan, Tahap Pembimbingan, Tahap Pendampingan, dan Tahap Evaluasi. Hasil dari kegiatan ini adalah meningkatnya pengetahuan, pemahaman, dan keterampilan peserta dalam pengelolaan dan pengembangan ekowisata berbasis pemberdayaan masyarakat.
Psychosocial Assistance Through a Support Group Program as a Strategy for Handling Adolescent Social Problems in the Village of Merak Belantung, South Lampung
Authors: Nurwahidin Muhammad , Utaminingsih Diah , Mualimin -
Published: December 2021

Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah membantu meningkatkan kesadaran remaja tentang pentingnya sehat secara sosial serta membantu pemerintah Daerah Lampung Selatan mengurangi permasalahan-permasalahan sosial khususnya masalah sosial remaja. Masa remaja merupakan masa transisi dari masa anak-anak ke masa dewasa. Dianggap dewasa belum, dianggap anak-anak juga bukan. Oleh karenanya remaja perlu didampingi  secara psikososial supaya remaja bisa berkembang secara baik dan sesuai yang diharapkan oleh orang tua. Salah satu permasalahan remaja adalah masalah pencarian jati diri. Melihat situasai seperti ini timbul keiginan untuk mendampingi remaja dan bekerjasama dengan para tokoh masyarakat di Desa Merak Belantung Lampung Selatan untuk memberikan bimbingan dan penyuluhan serta pendampingan kepada para remaja warga di desa tersebut. Hal itu dilakukan supaya warga sadar akan pentingnya sehat secara sosial dan membantu pemerintah mengatasi masalah sosial remaja. Metode kegiatan untuk pengabdian kepada masyarakat ini menggunakan program Support Group, yang didalamnya akan ada kegiatan bimbingan, penyuluhan dan pendampingan psikososial kepada remaja di Desa Merak Belantung Lampung Selatan. Jika ini terealisir maka insyaalah permasalahan sosial remaja di Desa Merak Belantung Lampung Selatan akan teratasi. Salah satu kebanggaan kota Desa Merak Belantung adalah memiliki banyak tempat wisata yang ramai dikunjungi oleh para wisatawan baik lokal maupun domestik bahkan internasional. Keberadaan pariwisata tersebut idealnya memberi kontribusi kepada masyarakat khususnya remaja untuk berfikir dan bertindak sesuai norma-norma sosial masyarakat Desa Merak Belantung Lampung Selatan. Kenyataannya para remaja malah terpengaruh dengan lingkungan wisata yang relatif bebas tersebut. Disinilah urgensi pengabdian kepada masyarakat ini dilakukan. Keberadaan tempat wisata seharusnya tidak mengurangi untuk menjadi remaja yang sholeh secara pribadi, sosial dan spiritual. Kesimpulan dari pengabdian ini adalah (1) Support group therapy yang diberikan membuat informan mengenali dirinya, memahami bahwa setiap orang memiliki kelebihan dan kekurangan dan juga sejarah masing-masing, serta bisa menerima dirinya; (2) Support group therapy yang telah dilaksanakan mampu memberikan fungsi terapeutiknya terhadap kelompok, yaitu sebagai faktor dukungan (supportive factors), faktor keterbukaan diri dan katarsis, faktor belajar kebijaksanaan atau kearifan dari anggota kelompok lainnya, serta faktor-faktor psikologis yang berkaitan dengan bagaimana menjalin hubungan dengan orang lain dan bagaimana memahami diri sendiri.
RESPON PESANTREN TERHADAP PENERAPAN PROTOKOL KESEHATAN DI TENGAH PANDEMI COVID-19 (STUDI KASUS TERHADAP TIGA PESANTREN DI SUMATRA SELATAN)
Authors: Nugroho Nugroho , Zain Zaki Faddad Syarif , Nurhayat Arpah
Published: December 2021

This study was to reveal the theological response and application of health protocols in Islamic boarding schools during the COVID19 pandemic. The data were obtained through observations, observations and interviews in three Islamic boarding schools: Ittifaqiyah, Aulia Cendikia and Al Burhan, a Salaf Islamic Boarding School. Aulia Cendikia is affiliated with NU and Al Burhan with Jamaah Tabligh, while Ittifaqiyah is the largest pesantren in the province but is not affiliated with any religious movement. This study revealed that in the application of health protocols in Islamic boarding schools during the pandemic, there were two things. First, Islamic boarding schools applied rules in the form of SOPs for virus prevention strictly. This was performed by Pesantren Aulia Cendikia and Ittifaqiyah. Meanwhile, Al Burhan tent to apply loosely. It was concluded that the level of an Islamic boarding school and the school it adhered could determine the response to health protocols in the midst of the Covid-19 pandemic.
The Art of Bracketing Empire Out and Creating Parallel Worlds: The Case of Late Persian Yehud
Authors: Ben Zvi Ehud
Published: December 2021

The goal of this article is to draw attention to a seemingly strange, generative pattern that, at times and under certain conditions, has shaped socially shared worlds of imagination among subordinate groups within imperial or hierarchically asymmetric structures of power, especially among “retainer” groups who saw themselves as a “cultural elite” of the subordinate group. I am referring to a generative pattern that in a significant number of such groups, across time and space, has led to constructions of worlds of imagination, and vicarious participation in them through readings or other social acts of imagination that involved “bracketing the empire out.” The article focuses on the world of the literati of late Persian Yehud/Judah, and especially the bracketing out of Ramat Rahel, the most obvious and monumental, explicit, imperial site in the province, but a number of various examples from diverse historical and geographical contexts are also brought to bear to make a point that this is a well-instantiated pattern. The article then concludes with a discussion of what was often gained by acts of imagination and memory involved in bracketing out “empire” and under which circumstances such acts tended to be historically likely.
The Roving Other: Shepherds, Ungovernable Spaces, and Imperial Authority in First-Millennium Mesopotamia
Authors: Kozuh Michael
Published: December 2021

Much of the literature on pastoralists and empire concerns mobile tribes and often focuses on imperial schemes of resettlement, or tribal thwarting of state initiatives.  This submission argues that in mid-first-millennium BCE Babylonia, large bureaucratic temples stood between the imperial state and Babylonia’s mobile class of shepherds. This article then explores this dynamic further, focusing on the use of administrative information as a point of imperial contestation, examining issues of local control and clashing hierarchies as the shepherds served an imperial obligation in the Mesopotamian hinterland, and finally argues that the pastoral dynamic presented here is of a piece with the larger political role of the temple in Babylonian life—both urban, familiar, and central and at the same time distant, other-like, and enigmatic.
Yau̯nā and Sakā: Identity Constructions at the Margins of the Achaemenid Empire
Authors: Balatti Silvia
Published: December 2021

The Achaemenid Empire can be reasonably considered an “empire of peoples” from both an ideological and structural perspective. It included all the lands of the peoples of the world and all people helped to maintain imperial order and prosperity. In reality, the empire had boundaries and there were peoples who lived near and beyond them. Under King Darius I, groups of people were annexed at the northeastern and northwestern margins of the imperial territory, thus entering the imperial space and consequently also the Achaemenid documents. The border peoples of the Yau̯nā and Sakā were the only peoples of the empire to be differentiated through epithets, which were added to their collective names in the texts. This shows a unique process of group identity constructions by the authorities on the edges of the imperial space. The analysis of the system of epithets used to indicate the Yau̯nā and Sakā conducted in this paper allows us to draw some conclusions on the mechanisms and reasons behind these specific forms of identity constructions at the margins. Moreover, it shows how this process reflected the main directions of imperial expansion under the first Achaemenids.
Ensuring the validity of the results of calibrations and tests by statistical methods
Authors: Kolbasin Alexander
Published: December 2021

According to the requirements of ISO/IEC 17025:2017, the validity of test and calibration results is ensured, inter alia, by intralaboratory check of the results obtained. In this case, it is preferable to use statistical methods.

The ISO 5725 standards define a number of such methods, but the choice of specific methods is left to the laboratory, taking into account the requirements for the adequacy of the effort, resources and time for the purposes of the work performed and the risks of obtaining inappropriate results. In this case, the laboratory itself must in a certain way determine which objects of calibrations (tests) should be predominantly used in checks and what frequency of checks should be foreseen.

In connection with the increase in the accuracy and complexity of measuring systems, the need to apply the methods of the theory of random processes becomes more and more obvious. It is shown that the use of the Poincaré plot makes it possible to comprehensively, effectively and visually evaluate changes in the measuring process from the point of view of the dynamics of the obtained measurement results.

The results of the check, in particular, the intermediate precision, make it possible to obtain a more realistic evaluation of measurement uncertainty in accordance with ISO 21748.

The paper analyses some practical approaches (of varying degrees of complexity) to intralaboratory checks of the validity of calibration (test) results.
Measurement of microwave radiation pressure on thin metal fibers
Authors: Kokodii Mykola , Berdnik Sergey , Katrich Victor , Nesterenko Mikhail , Priz Ivan , Natarova Anastasia , Maslov Vyacheslav , Muntian Konstantin
Published: December 2021

The pressure of electromagnetic radiation in the optical range is widely used to hold microparticles in a given place and control their movement. This is possible by focusing the laser radiation into an area with the dimension of several micrometers. The intensity of radiation in this area is large and sufficient to retain micro-particles in the laser beam and manipulate them. Nowadays, intensive research is underway on the use of microwave and terahertz radiation and the possibility of applying radiation pressure in these ranges. But in the microwave range, the focal spot dimension is much larger than in the optical one. Therefore, control of the objects whose dimensions are comparable to those of the focal spot using the radiation pressure requires very high power. For the objects with small dimensions, a small amount of radiation energy falls on them, and the acting force decreases. However, it is known that thin conductive fibers interact very strongly with microwave radiation. This can be used to levitate short thin metal fibers (vibrators), hold them in predicted place and control their position in space.

The paper describes the measurements of the pressure of microwave radiation with a wavelength of 8 mm on thin copper fibers. Torsional balance is used for this purpose. In the metal case on a suspension from a tungsten fiber with a diameter of 8 microns there is located the rocker arm with 50 mm length with receiving elements in the form of system of copper fibers with a diameter of 300 microns and 15 mm length. Microwave radiation was directed to one of the receiving elements using a horn. The calibration of torsion balance, the measurement process, and the evaluation of the resulting error are described. The measurements gave the value of the efficiency factor of the radiation pressure Qpr = 4.86. This agrees satisfactorily with the results of calculations Qpr = 5.39. The difference is 10%.
Intrinsic background of the beta channel of the aerosol volumetric activity monitor
Authors: Kozyrenko Artem , Letuchyy Oleksandr , Pystovyi Andrei , Skliarov Vladimir
Published: December 2021

The work is devoted to the study of the features of generation of the intrinsic background of the measuring beta channel of the aerosol monitor in real conditions of measuring the volumetric activity of aerosols, caused by radionuclides of technogenic origin.

The influence of external factors on the generation of the level of the intrinsic background of the measuring channel of the monitor and its metrological characteristics is investigated.

The reliability of the results of measurements of the volumetric activity of air aerosols substantially depends on the correct accounting of external factors, parameters of the monitored environment and the specified operating mode of the monitor.

Aerosol volumetric activity monitors, as a rule, operate in a continuous mode, in which the aspiration method of aerosol accumulation is implemented, followed by measuring the volumetric activity of aerosols by alpha radiation and (or) beta radiation generated by technogenic radionuclides.

This article describes the results of experiments on measuring the iCAM aerosol monitor’s intrinsic beta channel background under real operating conditions, and its dependence on external factors.

The studies were carried out on iCAM aerosol monitors (iCAM/D and iCAM/MF modifications) manufactured by Canberra Industries Inc. in a laboratory room in normal climatic conditions with a radon volumetric activity of 35±10 Bq·m-3 and an equivalent dose rate of gamma radiation of 0.13±0.02 μSv·h-1.

In modern aerosol monitors, software and hardware solutions are implemented that allow to significantly reduce the background level and, as a result, to expand the measurement range of the volumetric activity of aerosols towards low values.
Developing Construct 2 Android-Based Education Math Game to Improve the ICT Literacy on Number Patterns Subject
Authors: Fatahillah Arif , Alfiyantiningsih Nur , Dafik Dafik
Published: December 2021

This research aimed to describe the development process and results of the Construct 2 Android-based education math game on number pattern subjects to increase student's ICT literacy. This research employed the Research and Development method with a 4-D development model. The development model consisted of 4 stages: the Define stage, the Design stage, the Development stage, and the dissemination stage. Also, the researchers developed the Android-based application based on ICT literacy indicators. The application must be valid, practical, and effective. The results showed a correlation coefficient value of 0.87 and included in the valid category with very high interpretation. The level of practicality of the developed product was 83.96% based on a users' responses questionnaire. The effectiveness was determined based on the percentage of students' learning outcomes which was 83.33%. The increase in students' ICT literacy was determined based on the ICT literacy questionnaire and learning outcome tests' average N-Gain score. The average N-Gain value obtained was 0.75, with an average value for the ICT literacy questionnaire of 0.89 and the average value for the learning outcome test of 0.61. Based on these three criteria, it can be concluded that the Construct 2 android-based educational math game on the number pattern material can improve students' ICT literacy.
Critical Thinking Ability Improvement: The Impact of STAD Learning Model in Mathematic Courses
Authors: Wibowo Dodiet Enggar , Mustadi Ali , Muanifah Mahmudah Titi
Published: December 2021

According to some studies on school student, the application of the STAD method in some subject can improve critical thinking ability. However, according to other studies, STAD in some subject for school students cannot improve critical thinking ability. This study, hence, aims to discover the impact of the application of STAD in improving critical thinking ability, especially in mathematics course for university students. The experiment was carried out in a quasi-experimental design, especially the pretest-posttest non-equivalent group type. The findings of this study indicate that the application of STAD in mathematics learning can improve critical thinking ability. The advantages of using STAD can be seen from the increase in critical thinking ability, both abilities in the low, medium, and high categories. This study also confirms the findings of other studies that the application of cooperative and problem-based learning methods is effective in improving critical thinking ability. However, in contrast to other studies that reveal the benefits of STAD can be obtained after a long time of application (9 weeks - 8 months), this study shows that the benefits of STAD can be obtained in a relatively short time. This occurs because the treatment in the experimental class meets the criteria set by the experts, and uses three important structures proposed by experts, too. This research, therefore, has implications for the need to use problem-based cooperative learning methods.
Mathematical Literacy: A Case Study on Padang Students' Mathematical Ability
Authors: Yulia Yulia , Kustati Martin , Afriadi Juli
Published: December 2021

This study aims to analyze student mathematical literacy ability from the perspective of students' Mathematical Ability. This research is a descriptive study with a qualitative approach. The research subjects were three students of XI IPA 1 MAN 1 Padang with different mathematical abilities: low, medium, and high. Data were collected through documentation, tests, and interviews. The results of the analysis show that students with high abilities can solve routine problems, interpret problems and solve them with formulas, carry out procedures well, can deal with complex situations, use their reasoning in solving problems, can work effectively and interpret different representations and then relate them to the real world. Students with moderate abilities can solve routine problems, interpret problems and solve them with formulas, and carry out procedures properly. Meanwhile, students with low abilities are only able to solve routine questions. Based on these results, it is necessary to look for strategies in the mathematics learning process, which enable the improvement of students' mathematical literacy skills.