bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact-abrasive wear resistance of high alumina ceramics and ZTA
Authors: Varga Markus , Grundtner Reinhard , Maj Matthias , Tatzgern Fabio , Alessio Karl-Otto
Published: January 2023

In transport of raw materials abrasive wear resistance is a requirement, which can be met with alumina ceramics. At certain locations additional impact load occurs, exacerbating the wear loss. As literature on impact-abrasive wear of ceramics is scarce this topic will be researched in this work. We selected a variety of commercial alumina ceramics (90-96% Al2O3) and according to literature much more impact resistant – and substantially more expensive – Zirconia Toughened Alumina (ZTA, 20- 25% Zr) used for wear resistant linings in impact dominated systems. We selected the Impeller-Tumbler test, an impact-abrasion test for wear evaluation of highly loaded ceramic edges. Two load regimes were evaluated for the abrasive, either corundum particles for severe load or steel for extreme load conditions. Correlation of wear results with the fracture toughness (K1C) and Vickers hardness of the materials is intended – material parameters used as measure for brittle failure of ceramics and wear resistance, respectively. The various ceramic materials showed very different wear behaviour under the impact-abrasive load. The 90% Al2O3 was least wear resistant under both load conditions. Interestingly large differences between the 92% types were found at extreme load conditions. The increase of alumina content to 95- 96% showed remarkable benefits in both wear regimes. Best wear resistance against severe load was achieved by 25% ZTA, while it is comparable to the 95-96% high alumina types at extreme load.
WITHDRAWN: Design and control of a mobile robot following the desired Trajectory using an adaptive sliding mode approach
Authors: LIU YONGQIU , Zhong Shaohui , MUSTAFA KAINAT , Aslam Sheraz , Daraz Amil
Published: January 2023

This paper presents a design for a control system that will ensure the stability and proper operation of a mobile four-wheeled robot. As a result of the nonlinear dynamics, structural and parametric uncertainty of this robot, various control approaches are used to achieve stability and proper performance and minimize modeling errors and uncertainties. Two control approaches are applied to ensure that this robot is stable, that its performance is appropriate, and that modeling errors and uncertainties are minimized. In the presence of external disturbances and parametric uncertainty, this algorithm uses the signals provided by the sensor from the trajectory to follow the predetermined trajectory. It was assumed in previous articles that the upper bound of uncertainty was known. In this paper, we assume the upper bound of uncertainty and disturbance in the robotic system is unknown since, in many cases, we cannot know the extent of these uncertainties. In this paper, we generalized the sliding mode control law and proved its effectiveness so that by including an adaptive part to the control law, we make it into a robust-adaptive sliding mode control, and we could estimate the upper bound uncertainties online based on these adaptive laws. The control objective is to follow a predefined trajectory by regulating the linear and angular velocities in the presence of external disturbance and parametric uncertainty. The Adaptive Super Twisting (AST) algorithm is designed to build a robust controller with neglected chattering in a steady state. The proposed controller is validated experimentally. The results show that the proposed controller guarantees the performance of the conventional SOSMC under external disturbance and parametric uncertainty with less chattering. This typology can be expressed as a distinct theorem with stable results. Simulations with MATLAB software demonstrate that the controller ensures optimal performance under external disturbances and parametric uncertainty with fewer fluctuations.
Intensity of Supplemental Greenhouse Lighting Affects Strawberry Plant Growth, Anthracnose Infection Response, and Colletotrichum Pathogen Development in Culture
Authors: Smith Barbara J. , Stafne Eric T. , Sakhanokho Hamidou F. , Sampson Blair J.
Published: January 2023

The effect of supplemental lighting on strawberry growth and anthracnose disease response of three strawberry (Fragaria ×ananassa) cultivars was evaluated in two greenhouse trials, and the effect on strawberry anthracnose pathogens (Colletotrichum sp.) was evaluated in the laboratory. The objective of the greenhouse trials was to determine the effect of various intensities of the red and blue light emitting diode (LED) light treatment on strawberry plant vigor, injury, and disease development. In these trials, the duration of supplemental light treatments was split into two 4-hour periods: dawn and dusk. The intensity of the red and blue LED bulbs was set using an adjustable dial at 1 or 3 in trial 1 and at 1, 5, or 10 in trial 2. Illuminance and photosynthetic photon flux densities of the light treatments ranged from lows of 402 lx and 5 μmol⋅m–2⋅s–1 (blue LED 1) to highs of 575 lx and 25 μmol⋅m–2⋅s–1 (red LED 1 + blue LED 3) in trial 1, and from lows of 4213 lx and 81 μmol⋅m–2⋅s–1 (red LED 1) to highs of 7051 lx (red LED 5) and 194 μmol⋅m–2⋅s–1 (red LED 10) in trial 2. Lower light intensities in trial 1 resulted in no significant differences as a result of light treatments in relative chlorophyll content, plant vigor ratings, or disease severity ratings (DSRs). However, plant injury ratings were significantly greater in plants in the wide-spectrum fluorescent (WSF) plus ultraviolet B (UVB) light treatment compared with the other treatments. Under the higher light intensities in trial 2, there were more significant effects among light treatments. Relative chlorophyll content of plants in the WSF + UVB, WSF, and red LED 1 treatments was significantly greater than that of plants in the red LED 10 treatment; however, plants in the red LED 10 treatment had the greatest injury ratings. Detached leaves from plants in the red 5 LED and red 10 LED treatments inoculated with Colletotrichum gloeosporioides received the greatest DSRs, and leaves from plants in the red LED 1 and WSF treatments received the lowest DSRs. In the laboratory, five days of exposure to supplemental lights did not prevent the growth of isolates of three species of Colletotrichum pathogens even though the intensity of the LED lights was set at their highest intensity. However, growth of isolates exposed to the WSF + UVB light treatment was slowed.
Penerapan Model Pembelajaran Kooperatif Tipe STAD dengan Pendekatan SETS terhadap Hasil Belajar Siswa di SMP Arosbaya
Authors: Ningsih Nurul Fitria
Published: January 2023

This study aims to describe the students' learning achievement, the implementation of cooperative learning of STAD using SETS approach, and the students’ respond after following the teaching and learning process. This is a pre-experimental study, and the researcher chose one class as the subject of the research, that is, class VIII-i consist of 34 students. The design of the study is one shot case design. The study was conducted for three meetings, two meetings for the teaching and learning process, and one meeting for the administration of cognitive and psychomotor test. The findings of the study shows that the implementation of cooperative learning of STAD using SETS approach in the material of household chemicals have been implemented well based on the syntax in the category of very good (89%). The cognitive aspect of the learning achievement of the successful students were 30 students (88,2%), unsuccessful students were 4 (11,8%). The result of normality test shows that it is normally distributed classes with χscore <χtable (9,5 <11,07) with α = 0,05. The result of t-test of one-tailed obtained tscore> ttable (α = 0,05), with tscore of 4,96 and 1,70 for ttable. This result shows that the implementation of cooperative learning of STAD using SETS approach in the material of household chemicals improves the students’ learning achievement. The students’ performance in the psychomotor aspect is the category of excellent (90,8%), and the affective aspect is in the category of good (84,5%). Based on the results of questionnaires known that students respond positively to the teaching and learning process with the criteria of very good (95,3%).
Implementasi Penggunaan Aplikasi Google Classroom pada Minat Belajar Aqidah Akhlak Siswa MTs Samarinda
Authors: Setiawan Iswahyudi , Idris Husni , Rahmawati Indriana
Published: January 2023

The motivation for this research is the COVID-19 pandemic that hit Indonesia, so the government decided to implement large-scale social restrictions to stop the spread of the COVID-19 virus. This also has an impact on teaching and learning activities that require online learning. make the Madrasah Tsanawiyah Ash Shabirin Samarinda opposite which conducts online learning using the Google Classroom application so that learning activities are carried out online and also have an impact on student learning interest in using Google Classroom media in learning. The research method used in this study is a qualitative descriptive method. Data collection techniques are observation, interviews, and documentation. The data analysis technique used there are three stages of data collection, data presentation, and drawing concluding. The research location is at the Ash Shabirin Samarinda MTs school opposite the informants, namely MTs students grades 1,2,3, the academic year 2020/2021, and teachers of Aqidah Morals subjects. The results of research from 14 students and 2 teachers of MTs Ash Shabirin Samarinda across regarding the implementation of the use of the Google Classroom application on student learning interest in the Aqodah morality lesson have greatly helped students and teachers in conducting online learning activities, the use of applications that are very easy, practical, and not consuming a lot of data in using it so that students and teachers easily use the Google Classroom application in learning amid during in the covid 19 pandemic. However, the use of Google Classroom media also hurts student learning interest, namely the absence of direct interaction between teachers and students in the learning process lack of interest in student learning in participating in learning, students feel bored and bored so that students find it difficult to understand the material presented.
Konsep Kepemimpinan Dan Rekrutmen Serta Dampaknya Pada Lembaga Pendidikan
Authors: Anwar Chairul
Published: January 2023

Tujuan penelitian dalam artikel ini adalah mendeskripsikan mengenai konsep kepemimpinan dan rekruitmen. Metode penelitian yang digunakan yaitu penelitian library. Data yang diperoleh kemudian dianalisis serta ditelaah secara mendalam atas referensi yang digunakan sebagaimana halnya dalam studi kepustakaan atau library research. Hasil penelitian yaitu modal pemimpin yang terpenting adalah mengetahui, tidak harus ahli. Pemimpin muncul dikarenakan adanya berbagai perbedaan manusia yang bersifat heterogen, yang kemudian butuh disatukan atau diselaraskan dan diarahkan agar perbedaan-perbedaan itu tidak menimbulkan konflik. Kunci utama dalam menciptakan sumber daya manusia yang profesional adalah terletak pada proses rekrutmen, seleksi, training and development calon tenaga kerja. Sistem perekrutan hendaknya mengacu kepada daya saing dengan begitu perusahaan mampu mewujudkan tujuan perusahaan. Sistem rekrutmen di manufaktur mengacu pada keahlian pekerja dan mampu beradaptasi dengan perkembangan jaman. Tidak hanya sebagai acuan bagi lembaga lainnya juga menjadi hal penting bagi kemajuan bersama. Pandangan Islam tenaga profesional tersebut dicirikan oleh tiga hal, yakni: 1) Kaffaah, yaitu adanya keahlian dan kecakapan dalam bidang pekerjaan yang dilakukan, 2) Himmatul Amal, yakni memiliki semangat dan etos kerja yang tinggi dan 3) Amanah, yakni terpercaya dan bertanggung jawab dalam menjalankan berbagai tugas dan kewajibannya serta tidak berkhianat terhadap jabatan yang didudukinya.
The Teaching of Listening for EFL Students: An Overview
Authors: Putri Erawati Wiyono
Published: January 2023

Methods and techniques used by both ESL and EFL students in listening may be the same but the manner of teaching should be different. For instance, ESL students can learn to listen outside the class by using authentic material as listening to the conversation of a librarian in the library (real situation) while EFL students can also do that by listening to the video provided by the teacher which performs a conversation between native speakers in a library.  The students should exercise their listening skills more in order to improve their level of mastery of listening. Students better not only do exercise in listening class but also in other places. Students must be confident in their own answers to be better in listening class and can know their own mistakes.
Pengaruh Aktivitas Bermain Game Online terhadap Akhlak dan Motivasi Belajar Siswa SMA Negeri di Kabupaten Penajam Paser Utara
Authors: Waham Wahid , Z.A M. Ajie Faisal Muttaqin , Utami Rifka Novi , Wardana Putra Andri , Rahayu Sherly Susilo , Sirajuddin  , Aisyah Siti
Published: January 2023

This research is motivated by the rise of online game playing activity of student SMA Negeri in Kabupaten Penajam Paser Utara, which has an effect on moral change and a decrease in students’ study motivation who actively plays online games. This study aims to find out how the activity of playing online games, the morals, and the students’study motivation, how much the influence of online games playing activity on morals and students’ study motivation, and how much the influence of online game playing activity on morals and students’ study motivation simultaneosly. The type of this research is quantitative research, with data collection techniques used the form of questionnaires and documentation. The data analysis technique is simple linear regression and multiple linear regression. The population is all students of class X of SMAN 3, SMAN 4 and SMAN 5 of Kabupaten Penajam Paser Utara, totaling 467 people. The sample amounted to 94 people with purposive sampling technique. The research result show that : (1) the online game playing activity of students is a good with a value of μ = 46 (μ = X ˃ 51 ), (2) the morals of studens is so good with a value of μ = 52 (μ = Y1 ˃ 51 ), (3) Students’ study motivationis is a good with a value μ = 49 (μ = Y2 ˃ 51 ). (4) The value of rx_Y1 is 0,615, with a strong intensity and t_test = 7,487 > t_table = 1,66159, so Ha is accepted which means that the online game playing activity has a significant effect on the moral. The value of the coefficient of determination proves that online game playing activity has an effect 37,9% on the students’ moral and 62,1% is influenced by other variables. (5) The value of rx_Y2 is 0,619, with a strong influence and t_test =7,562 > 1,66159, so Ha is accepted which means that the online game playing activity has a significant effect on the motivation of study. The value of the coefficient of determination proves that online game playing activity has an effect 38,3% on the motivation of study and 61,7% is influenced by other variables. (6) Furthermore, the results of the multiple linear regression obtained a relationship of 0.656, it can be concluded that the activity of playing online games together has a strong and significant effect on moral and students’ study motivation of SMA Negeri in Kabupaten Penajam Paser Utara.
Code Switching and Code Mixing in Classroom Presentation of Indonesian EFL Students
Authors: Sari Nur Fitamala
Published: January 2023

Code switching and code mixing occur when bilinguals switch or mix language in speech or conversation. Some of the students used code switching and code mixing to avoid misunderstandings in their explanations. In addition, the researcher noted that the use of code switching and code mixing with Indonesia and English is done in a classroom presentation. Based on the issues, the purpose of this research is to find out the types and the reasons used code switching and code mixing of EFL students in the classroom presentation of UINSI Samarinda. This research used a descriptive qualitative design. The data and sources data of this research was TBI 3 in the fourth semester of the ESP course with 5 students. This research used the researcher itself as the main instrument and interview. The data were collected using an audio recorder. Based on the result, the researcher found that the most common code switching used by students was inter-sentential code switching. Next, code switching used by students were intra-sentential code switching and tag code switching. Moreover, the most common code mixing used by students was intra-sentential code mixing. After that, the second common code mixing used by students was involving a change of pronunciation. However, intra-lexical code mixing was not used by students in a classroom presentation. The students’ reasons used code switching and code mixing were talking about a particular topic, quoting somebody else, being emphatic about something, interjection, repetition used for clarification, and intention of clarifying the speech interlocutor.
DESFILE DOURADO DOS FARAÓS:
Authors: Paschoal Nina , Müssnich Rotta Gomes Assunção Naiara , Lelis Francismara
Published: January 2023

Este artigo procura analisar alguns dos discursos visuais e orais proferidos no Desfile Dourado dos Faraós, evento ocorrido em abril de 2021 no Cairo, Egito. Nele, 22 múmias de reis e rainhas dinásticas foram transferidas do Museu Egípcio do Cairo para o seu novo espaço expositivo no Museu Nacional da Civilização Egípcia. Iremos abordar um breve histórico da Egiptologia, do Museu Egípcio e da cooptação colonial de espaços culturais a fim de contextualizar as análises sobre o simbolismo de elementos presentes no Desfile. Discutiremos as presenças e ausências de representação no evento com o objetivo de lançar uma reflexão sobre a forma pela qual o Egito usa seu passado e seu patrimônio cultural e material para reelaborar suas narrativas históricas, de acordo com o que lhe é pertinente politicamente no presente.
CONTINENTE E A PRATA:
Authors: Pereira da Silva Gabriel
Published: January 2023

O presente artigo visa abordar aspectos referentes ao processo de formação do território sul-rio-grandense integrado com a historiografia platina. Para tanto, busca-se através de um diálogo entre História e Literatura despertar tais questões a fim de discutir e embasar nossas reflexões. O primeiro livro da trilogia O tempo e o vento, do escritor Erico Verissimo, serve como ponto de partida para nossa proposta ao situar-se entre os séculos XVIII e XIX. O processo histórico registrado pela historiografia recente, bem como a percepção crítica do romancista contribuíram para a exposição das ideias referentes à ascensão do pensamento republicano no Brasil.
Drug-Eluting Stent Restenosis: Modern Approach to a Classic Challenge
Authors: Donisan Teodora , Madanat Luai , Balanescu Dinu V. , Mertens Amy , Dixon Simon
Published: January 2023

In-stent restenosis (ISR) is a recognized complication following percutaneous coronary intervention in which the luminal diameter is narrowed through neointimal hyperplasia and vessel remodeling. Although rates of ISR have decreased in most recent years owing to newer generation drug-eluting stents, thinner struts, and better intravascular imaging modalities, ISR remains a prevalent dilemma that proves to be challenging to manage. Several factors have been proposed to contribute to ISR formation, including mechanical stent characteristics, technical factors during the coronary intervention, and biological aspects of drug-eluting stents. Presentation of ISR can range from asymptomatic to late myocardial infarction and could be difficult to differentiate from acute thrombus formation. No definite guidelines are present on the management of ISR. In this review, we will discuss the mechanisms underlying ISR and provide insight into patient-related and procedural risk factors contributing to ISR, in addition to highlighting common treatment approaches utilized in the management of ISR.
Immunomodulatory Effects of Agarwood Leaf Extract on RAW264.7
Murine Macrophages
Authors: Nirwana Soelaiman Ima , Pang Kok-Lun , Chin Kok-Yong
Published: January 2023

Background:

The immunomodulatory effects of plants have been utilised to
enhance the immunity of humans against infections. However, evidence of such effects of
agarwood leaves is very limited despite the long tradition of consuming the leaves as tea.

Objective:

This study aimed to investigate the immuno-modulatory effects of agarwood
leaf extract (ALE) derived from Aquilaria malaccensis using RAW264.7 murine macrophages.

Methods:

In this study, RAW264.7 macrophages were incubated with ALE alone for 26
hours or ALE for 2 hours, followed by bacterial lipopolysaccharide for 24 hours. The nitrite
and cytokine production (tumour necrosis factor-alpha (TNFα), interleukin (IL)-1β, IL-6,
and IL-10), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX2) expression
in the macrophages were assayed.

Results:

The study showed that ALE alone was immunostimulatory on the macrophages
by increasing the nitrite, TNFα, and IL-6 production and COX2 expression (p<0.05 vs.
untreated unstimulated cells). Pre-treatment of ALE suppressed nitrite level and iNOS expression
but enhanced TNFα and IL-6 production and COX2 expression (p<0.05 vs. untreated
lipopolysaccharides (LPS)-stimulated cells). ALE also increased IL-10 production
regardless of LPS stimulation (p<0.05 vs. untreated cells).

Conclusion:

ALE was able to promote the immune response of macrophages by upregulating
pro-inflammatory cytokine levels and COX2 expression. It also regulated the extent
of the inflammation by reducing iNOS expression and increasing IL-10 levels. Thus, ALE
may have a role in enhancing the innate immune system against infection; however, its
validation from in vivo studies is still pending.
Chrysin Effect Against Gastric Cancer: Focus on its Molecular Mechanisms
Authors: Samarghandian Saeed , Alavi Dana Seyyed Mohammad Matin , Farkhondeh Tahereh , Aschner Michael , Darroudi Majid , Samini Helia
Published: January 2023

Gastric cancer is one of the most prevalent cancers in the world. Various therapeutic
modalities have been used for its treatment, but all exhibit severe side effects, establishing
the need for novel approaches. Chrysin is a phytomedicine compound belonging
to the flavonoid group. It is found in honey and many plants. Its antitumor effects
have been documented against gastric cancer cell lines in vitro, establishing its effects are
mediated via different pathways and the expression of miRNA. In this review, we summarize
the available literature on chrysin and its effects on gastric cancer, focusing on the
cellular mechanisms it targets.
O culto ao Menino Jesus a partir do Santuário Mariano (1707-1723): imagens e devoções
Authors: Moita Tiago
Published: January 2023

The cult of the Infant Jesus spread from Italy to the whole of Western Europe, mostly supported by the Franciscan movement and their devotion to the Nativity scene. The height of this devotion took place in the period of the Counter-Reformation, mostly in female convents, and included the custom of dressing and adorning the images, and then displaying them on the altars of parish churches, shrines of pilgrimage, or domestic oratories. This paper collects and studies the references to this cult in the work Santuário Mariano (1707-1723) by Fr. Agostinho de Santa Maria. It highlights the most notable images of the Holy Child referenced in this text due to their supposed miraculous attributes, as well as the accounts of the devotional practices surrounding them
Os Santos d’Afurada. Arte, devoção e comunidade. Dimensão artística, devocional e antropológica
Authors: Oliveira Cátia , Sousa Ana Cristina , Botelho Maria Leonor
Published: January 2023

This paper is a reflection on a set of ten images and a Via Sacra conceived by the sculptor Altino Maia (1911-1988), between 1955 and 1957, for the new parish church of São Pedro da Afurada (Vila Nova de Gaia). The study addresses the images in several dimensions: artistic and iconographic, including ordering processes and creation; the anthropological, detailing the community’s reception and reaction to these sculptures. Nine of the images were «hidden» in cabinets for long years, removed from the eyes of the faithful, received the popular and derogatory names of «Santos Pretos» or «Santos das Rodilhas» and were even victims of aggression attempts. The sculpture of the Crucified Christ was exhibited on the apse’s back wall until 2021 and the Via Sacra continues to be displayed on the north wall of the parish church of São Pedro da Afurada.Basedon the documentary and visual sources of the time and the testimony of some inhabitants of Afurada, this paper intends to analyze the circumstances of commissioning and artistic creation, developing an iconographic study of the images, contextualizing them in their time and to understand these object-images (in line with Jérôme Baschet) from an anthropological perspective
Once upon a time there was a handsome man. The virtue of a saint traveling across south-eastern Europe
Authors: Barutcieff Silvia Marin
Published: January 2023

The present paper aims to investigate the function of the dog-headed image of Saint Christopher among the Romanian Orthodox representations of the 18th century. The research will address the relationship between the existing zoomorphic representations and a new hagiography created by the popular lore, which circulated in Wallachia after 1700. This legend converted the monstrous ugliness of the hagiographic hero into his voluntary relinquishment of physical beauty, a semantic change intended to stress Saint Christopher’s virtue. The article will focus on the role of this unusual visual representation within the religious edifice, as well as on the saint’s exemplarity which operates in triggering the contemplation of Christian virtues
El milagro en la pasión del apóstol Santiago el Mayor: imágenes medievales para el relato hagiográfico
Authors: Chao Castro David
Published: January 2023

The passion of the apostle James the Greater is one of the main cycles of his hagiography. It is worth recalling the various medieval texts and traditions that recreated the narrative, although the Passio Iacobi and later the Legenda Aurea should be singled out as the most important sources for the iconographic elaborations. There is also room for the miracle exercised from the thaumaturgic condition granted to James by Christ: the healing of a paralysed man is the decisive motif for the conversion of the scribe Josiah. However, the iconographic representation of this event was not very abundant in the Romanesque and Gothic centuries, as opposed to the baptism of Josiah and, above all, his beheading together with the apostle himself. Apart from possible theological considerations, the lesser fortune of this figurative register must also have been influenced by the synthetic nature of the iconographic cycles themselves, therefore its evocation was necessarily implicit in the inclusion of the conversion-baptism of Josiah
As muitas Teresinhas de Chico Buarque de Hollanda
Authors: Ramalho Christina
Published: January 2023

Abordagem às criações lírico-musicais do compositor brasileiro Chico Buarque de Hollanda, enfocando es-pecialmente as canções em que a voz lírica se apresenta travestida de mulher, assumindo, assim, um su-posto ponto de vista feminino para cantar-contar a realidade das relações afetivas e, em plano mais abran-gente, sociais. Essa voz, inaugurada em “Com açúcar, com afeto” (1966), consagrou-se em criações como “Sem fantasia” (1967), “Atrás da porta” (1972), “Tatuagem” (1972-73), “A mais bonita” (1989), “A ostra e o vento” (1998), “Dura na queda” (2000), “Lábia” (2001), “Se eu soubesse” (2011), entre tantas outras, com destaque para “Sem açúcar” (1975), “Olhos nos olhos” (1976), “Folhetim” (1977-78) , “O meu amor” (1977-78), “Teresinha” (1977-78), “Sob medida” (1979), “Meu guri” (1981) e “Meu namorado” (1982). O artigo, levando em consideração a trajetória de Buarque compositor até nossos dias e as próprias transfor-mações da inserção das mulheres nos espaços privados e públicos, resgatará o percurso dessa voz travesti-da, buscando apontar possíveis modificações no ponto de vista feminino pressuposto
Rancang Bangun Pengendali Suhu pada Fermentasi Kefir Berbasis Kontroler PI
Authors: Rahmadwati Rahmadwati , Habibi Boby Yusuf
Published: January 2023

Kefir merupakan susu fermentasi yang memiliki rasa, warna, dan konsistensi yang menyerupai yogurt dan memiliki aroma khas yeasty. Kefir memiliki kandungan gula susu (laktosa) yang relatif rendah dibandingkan susu murni dan cocok bagi penderita lactose intolerant atau tidak tahan terhadap laktosa. Fermentasi bahan pangan adalah hasil kegiatan dari beberapa spesies mikroba seperti bakteri, khamir dan kapang. Mikroba fermentasi mendatangkan hasil akhir yang dikehendaki. Proses fermentasi kefir berlangsung pada suhu 25-37Â°C. Pada umumnya fermentasi kefir masih dibuat dengan menggunakan proses manual dengan hanya meletakkannya di suatu tempat tertutup tanpa tahu berapa suhu yang ada pada proses tersebut.Â  Sehingga tidak jarang sebagian masyarakat mengalami kegagalan dalam proses pembuatannya. Pada penelitian ini dilakukan pengontrolan suhu berbasis Arduino Uno dengan kontroler PI pada box fermentasi kefir. Kontroler PI dipilih karena karakteristik respon yang diinginkan adalah respon yang cepat dan memiliki nilai error yang kecil. Â Aktuator berupa elemen pemanas (heater) dan sensor suhu DS18B20 sebagai feedback system.Â  Proses perancangan kontroler PI menggunakan metode Ziegler-Nichols yang pertama dan didapatkan parameter kontroler PI dengan gain yaitu Kp = 26,45 dan Ki = 0,61. Nilai setpoint 32â„ƒ. Pada pengujian keseluruhan sistem tanpa gangguan didapatkan performansi respon settling time (ts) sebesar 954 s atau 15,9 menit dan error sebesar 0,593%. Pada pengujian keseluruhan sistem dengan gangguan didapatkan performansi respon settling time (ts) sebesar 960 s atau 16 menit, error sebesar 0,593% dan recovery time sebesar 165 s atau 2,75 menit.
Aplikasi NODEMCU ESP8266 sebagai Pemantau Suhu dan Kelembaban Ruang Data Center
Authors: Setyawan Raden Arief , Muttaqin Adharul , Khulud Hani
Published: January 2023

Data center memiliki peranan yang sangat penting sebagai pusat penyimpanan seluruh perangkat TI baik dari server yang besar hingga pusat komunikasi data perusahaan. Perangkat-perangkat tersebut tentunya dapat menghasilkan panas yang cukup tinggi mengingat penggunaan yang dilakukan secara terus-menerus. Di sisi lain, sebuah perangkat juga berpotensi untuk menghasilkan embun jika kondisi ruangan data center terlalu dingin. Oleh karenanya dibutuhkan sebuah sistem yang dapat digunakan untuk mendeteksi perubahan suhu dan kelembapan udara pada ruang data center. Pada penelitian ini telah dibuat sebuah alat dengan sistem yang mampu mengirimkan data secara real time ke thingspeak menggunakan NodeMCU ESP8266, sehingga suhu dan kelembapan dapat di pantau. Pada penelitian ini, error rata-rata suhu dari DHT11 yang digunakan sebesar 2.91%, sedangkan error rata-rata kelembapan sebesar 1.47%.
Aplikasi Solar Tracker System Berbasis Arduino Uno untuk Sistem Photovoltaic Pada Penerangan Jalan Umum
Authors: Wibawa Unggul , Purnomo Hery , Ramadhani Ahmad Zaki
Published: January 2023

Penelitian ini membahas tentang perbandingan keluaran daya antara panel surya konvensional dengan panel surya yang menggunakan sistemÂ  pelacak sinarÂ  matahari (solar tracker system). Pada penelitian iniÂ  juga membahas bagaimana rancangan sistem fotovoltaik yang akan digunakan untuk mencatu lampu penerangan jalan umum dengan menggunakan lampu LED DC sebesar 5 watt dan rancangan sistem alat pelacak sinar matahari yang berbasis Arduino uno. Perbandingan yang dilakukan adalah dengan mengukur arus dan tegangan keluaran kedua buah panel surya dimana satu panel surya konvensional dan satu panel surya menggunakan sistem pelacak sinar matahari. Pengujian dilakukan dalam dua kondisi yaitu pada kondisi cuaca cerah dan pada kondisi cuaca mendung. Pada cuaca cerah rata- rata selisih efisiensi antara panel surya yang menggunakan sistem pelacak sinar matahari dengan panel surya konvensional adalah sebesar 1,12% dan pada kondisi cuaca mendung adalah sebesar 1,94%. Hasil pengujian menunjukkan bahwa panel surya yang menggunakan sistem pelacak sinar matahari memiliki tingkat efisiensi daya yang lebih tinggi dari pada panel surya konvensional.
Optimasi Daya Baterai Menggunakan Bluetooth Low Energy Pada Routing di Wireless Sensor Network
Authors: Setyawan Raden Arief , Muttaqin Adharul , Muslichin Muslichin
Published: January 2023

Wireless Sensor Network (WSN) merupakan jaringan nirkabel untuk memantau kondisi fisik atau lingkungan, seperti suhu dan kelembapan, yang kemudian data tersebut diteruskan melalui sebuah jaringan kepada suatu lokasi (komputer) di mana data tersebut dapat diamati dan dianalisis. Tujuan utama WSN adalah menyediakan komunikasi nirkabel berdasarkan jaringan sensor berbiaya rendah dengan konsumsi daya yang sangat terbatas. Sehingga konsumsi energi merupakan permasalahan yang menantang pada WSN. Untuk mengurangi konsumsi energi pada WSN, protokol routing harus diterapkan. Salah satu tantangan pada routing yang terlibat dalam WSN, yaitu lalu lintas data yang dibuat memiliki redundansi (data yang tidak perlu/dibutuhkan) yang signifikan dalam sebagian besar kasus. Selain itu, perangkat WSN bergantung pada baterainya sebagai sumber listrik, sehingga masa pakai jaringan tergantung pada level baterai yang tersisa pada setiap node. Teknologi yang digunakan tiap node untuk saling berkomunikasi juga mempengaruhi konsumsi energi yang ada. Maka pada penelitian ini dirancang sebuah WSN yang berfokus pada pengiriman data dari tiap-tiap sensor node hingga mencapai sink node dengan mekanisme routing berdasarkan daya baterai pada node, sehingga data akan diteruskan melalui node yang memiliki daya terbesar. Protokol komunikasi yang digunakan adalah BLE yang sudah tertanam di ESP32. Metode komunikasi yang digunakan adalah connection-oriented atau master-slave, dengan shared-slave topology (SST) sebagai topologinya. DHT22 digunakan untuk mengukur suhu dan kelembapan relatif. Dari hasil percobaan, DHT22 memiliki error pada pembacaan suhu sebesar 1,935%, sementara pada pembacaan kelembapan udara memiliki error sebesar 1,90%. Hasil algrotima routing yaitu node menentukan dan mengirimkan data suhu dan kelembapan kepada node yang memiliki daya terbesar dengan rata-rata waktu 8,957 detik. Serta rata-rata waktu yang diperlukan oleh node untuk mengirimkan data suhu dan kelembapan kepada sink node yaitu 16,952 detik dengan 3 kali hop.
Aplikasi Metode Per Connection Queue Pada Optimasi Bandwidth Pada Jaringan Internet
Authors: Priyono Wahyu Adi , Setiawati Chofifah Rahmatullaili
Published: January 2023

Kualitas jaringan merupakan suatu faktor penentu kenyamanan pengguna dalam melakukan aktivitas jaringan komputer. Pada suatu jaringan komputer diperlukan suatu pengaturan bandwidth agar tidak terjadi monopoli penggunaan bandwidth. Manajemen bandwidth dapat dilakukan menggunakan mikrotik routerboard RB941-2nd dengan aplikasi pengaturan mikrotik menggunakan WinBox. Implementasi manajemen bandwidth menggunakan metode PCQ (Per Connection Queue) dengan teknik antrian simple queue dan queue tree. Untuk mengamati performansi kualitas jaringan menggunakan Network Analyzer Wireshark pada saat masing-masing PC melakukan video conference. Hasil implementasi manajemen bandwidth ini mampu diterapkan dengan baik pada kedua teknik antrian dan memiliki nilai yang baik pada masing-masing parameter jaringan. Maka dari hasil keempat nilai parameter jaringan, didapatkan nilai yang paling baik menurut kategori TIPHON dengan indeks 4 (Sangat Bagus) adalah pada teknik antrian Queue Tree yaitu dengan hasil rata-rata Packet Loss pada video conference Google Meet sebesar 0,38962857% dan pada Zoom sebesar 1,021288%. Hasil rata-rata DelayÂ  pada video conference Zoom sebesar 1,389343 ms dan pada Google Meet sebesar 1,860071 ms. Hasil rata-rata Jitter pada video conference Google Meet sebesar 1,50059 x 10-21 ms dan pada Zoom sebesar 3,0065 x 10-21.Hasil rata-rata Throughput pada video conference Zoom sebesar 22,64215 Mbps dan pada Google Meet sebesar 12,94397 Mbps. Lamanya durasi, jenis teknik antrian, jenis video conference, dan kualitas jaringan juga mempengaruhi hasil dari QoS (Quality of Service).
Studi Banding Antara Boost Converter dan DC-DC Rasio Tinggi Quadratic Boost Converter Berbasis Low Buffer Capacitor Stress
Authors: Purnomo Hery , Ardhenta Lundhe , Gerrenlie Giofano
Published: January 2023

Penelitian ini membahas tentang topologi baru dari dc-dc konverter jenis boost, yakni quadratic boost converter berbasis low buffer capacitor stress yang dibandingkan dan dianalisis prinsip kerjanya dengan boost converter. Konfigurasi yang dimiliki oleh kedua topologi rangkaian ini berbeda, sehingga berbeda pula untuk analisis rangkaian, stress tegangan, stress arus tiap komponen semikonduktor dan hasil gain tegangan keluaran yang dihasilkan. Analisis rangkaian yang telah dilakukan dalam penelitian ini menggunakan analisis rangkaian sakelar terbuka dan sakelar tertutup serta menggunakan metode Inductor Voltage Second Balance, kemudian menentukan spesifikasi komponen dan parameter komponen melalui perhitungan. Setelah menentukan spesifikasi dan parameter komponen kemudian rangkaian ini disimulasikan menggunakan software PSIM. Spesifikasi yang digunakan pada kedua komponen konverter ini sama guna membandingkan hasil kerja keluaran konverter. Spesifikasi ini antara lain tegangan masukan 50 V, frekuensi 70kHz, dengan menggunakan duty cycle 10%-50%. Hasil penelitan menunjukan bahwa quadratic boost converter berbasis low buffer capacitor stress dapat menaikan tegangan hingga 4 kali lipat dibandingkan boost converter.
Cover Jurnal EECCIS Vol.16 No.3 Desember 2022
Authors: Jurnal Editorial
Published: January 2023

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ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PENGANGGURAN PEREMPUAN
Authors:   Fakultas Ekonomi Universitas Udayana, Bali, Ayu Nyoman Saskara Ida , Kaluge David ,   Fakultas Ekonomi & Bisnis Universitas Brawijaya
Published: January 2023

The aim of this is to analyses women unemployment based on Indonesia Provinceusing Â inflation, Â investment, Â women Â involvement Â at Â labor market, Â Â and Â also meninvolvement at labor market as independent varaibles.The panel data is used from26 provinces in Indonesia for 5 years (2002-2006), using double log regression. Theresult Â shows Â that Â employing women Â have Â negative Â Â effect Â and Â significant, whileemploying men has positive effect and significant to the women employment. Inflationand investment have positive and negative effect but insignificant.
MULTIPLIER EFFECT PASAR DAERAH TERHADAP PENGEMBANGAN EKONOMI WILAYAH (Studi Kasus di Lingkup Wilayah Pasar Gempol Kab. Pasuruan Prop. Jawa Timur)
Authors:   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Muljaningsih Sri
Published: January 2023

The existence of market is able to give multiplier effect towards the community economyand the economic development of the region. Supported by infrastructure, as trans-port facilities like road and travel mode, moreover strategic location in a sense of theexistence of Â this market, has high accessibility. This Â is Â identified by Â the road net-works that connected intercity/the territory with the location of this market. Appro-priately the function of the market is linked with trade and the other field related likethe agriculture and non agriculture industries. However to determine the policy strat-egy of market function development, not only based on economic based models (LQ& Shift-Share), there are inputs of Â multiplier effect analysis, but must also be sup-ported by the SWOT analysis that give consideration of the strength, the weakness,opportunity Â and Â the Â threat Â that Â is Â influenced Â by Â the Â internal Â and Â external Â factor.Majority of the people at Pasuruan Municipal in agricultural sector, so agribusinesscan accelerated community economic growth as well as the region growth Howeverthe agribusiness sector need market in the strategic location and supported by infra-structure.
PERMINTAAN PARIWISATA INDONESIA: STUDI KASUS WISATAWAN MALAYSIA
Authors:   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Shasta Pratomo Devanto
Published: January 2023

This research attempts to study the effect of income per capita in Malaysia (GDP),relative Â prices Â (CPI) Â and Visit Â Indonesia Year Â 1991 Â to Â Indonesia Â tourism demandamong Malaysian visitors. Malaysian visitorsâ€™ arrivals Â to Â Indonesia are used as aproxy of Â Indonesia Â tourism demand among Malaysian visitors. Â In other words, anincrease in the Malaysian visitor arrivals to Indonesia indicates an increase in thetourism demand among Malaysian visitors, vice versa. The data used in Â this studyare quarterly secondary data for the period 1989.1-1997.4 consisting of total Malay-sian visitor arrival to Â Indonesia, income per capita in Malaysia, and ratio of con-sumer price Â index of Indonesia Â to consumer price Â index of Malaysia. The analysismethod applied in this study is regression using Error Correction Model (ECM). Theresults show that income per capita of Malaysia is elastic and positively affects Ma-laysian visitor arrivals Â to Â Indonesia. On the other hand, relative prices negativelyaffect Malaysian visitor arrivals to Indonesia, while Visit Indonesia Year 1991 posi-tively affects Malaysian visitor arrivals to Indonesia.
TELAAH KRITIS KEBIJAKAN PENANGGULAN KEMISKINAN DALAM TINJAUAN KONSTITUSI
Authors:   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Multifiah Multifiah
Published: January 2023

This paper aims to examine several poverty alleviation programs which have beendone for periods of time and evaluate the programs constitutionally in the frameworkof UUD 1945. The study finds that there are many programs held by the government,yet their mostly obstacles are overlapping objectives and the problem of corruptionand collusion. Moreover, the absence of clear guidance makes the conditions worse.UUD 1945 focuses in how to reduce poverty through basic needs fulfillment such aseducations, health, and social safety net, which are needed as key ingredients to suc-ceed sustainable poverty alleviation programs.
ANALISIS TERHADAP KESINAMBUNGAN LEMBAGA PEMBIAYAAN PEDESAAN DALAM MENDUKUNG USAHA MIKRO, KECIL DAN MENENGAH
Authors:   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Ashar Khusnul
Published: January 2023

The research goal is to find how far the degree of sustainability of rural financialinstitutions that exist and to identify the variables that determine what operationalsustainability yaginstitutions concerned. From the results of statistical tests and thediscussion can be summarized as follows: The degree offinancial sustainability forrural finance institutions significantly affected by the variable operating cost andrevenue variables which level income has a positive relationship while variable costshave a negative relationship. The influence of variable operating costs are relativelygreater than the influence of income variable; Good Rate Revenues and Cost ofOperations has a positive relationship and the real magnitude of value of receivables/loan value; level offinancial sustainability of institutions did not show a clear patternof relationship with the efficiency (either from the indicator value of loans per staffand per-unit cost of borrowing/Cost per unit of Money Lent); Compared with theindicator Cost per unit of Money Lent, the value of loans per staff show a clearerpattern of relationship with the magnitude of the Average-Performing Asset (the Costper unit of Money Lent did not show a clear pattern of relationship with the Average-Performing Asset). Average value addition is dominated by the Performing AssetValue Receivable. It can be concluded that the greater the value of Average Perform-ing Assets, the greater the value of receivables and the more efficient institutions KSP.
IMPLEMENTASI KEBIJAKAN FISKAL: PEMBIAYAAN PROGRAM PEMBANGUNAN BERBASIS RUKUN TETANGGA (PBRT) DI KABUPATEN SUMBAWA BARAT
Authors:   Fakultas Ekonomi, Universitas Mataram, Masniadi Rudi , Kaluge David ,   Fakultas Ekonomi & Bisnis, Universitas Brawijaya
Published: January 2023

Fiscal policy is one form of economic policies pursued in the context of macroeco-nomic stabilization, promote growth, equity, and sustainability menjega budget. WestSumbawa regency is one of regencies in NTB province has embarked on one of fiscalpolicy implementation is in the financing of Neighborhood-Based Development pro-gram (PBRT). PBRT program is a strategy of development by putting the region atthe lowest level of development of the neighborhood (RT). This policy is the empow-erment of RT with the understanding that the RT is not the lowest governmentalstructures and nongovernmental organizations that are able to understand all the com-plaints and needs of their citizens. RT becomes a very important institution in whichis located all the pecking order and also serves as a populist economic base which isthen defined as the Regulation (Regulation No. 27 Year 2008 regarding PBRT). Thispaper reviewed the implementation of the program PBRT is related to how big thebudget from the budget for financing. Furthermore, by using Regulatory Impact Analysiswill be analyzed whether the policy PBRT program will bring net benefits to societyand increase welfare in West Sumbawa regency.
RELASI KONSTITUSI DENGAN USAHA TANI IKAN, SAYUR, TELUR ORGANIK DAN NON-ORGANIK GUNA MENDUKUNG EKONOMI MASYARAKAT DAN WILAYAH ( STUDI KASUS DI KECAMATAN BANTUR KABUPATEN MALANG )
Authors:   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Muljaningsih Sri , Maski Ghozali ,   Fakultas Ekonomi & Bisnis, Universitas Brawijaya, Shasta Pratomo Devanto ,   Fakultas Ekonomi & Bisnis, Universitas Brawijaya
Published: January 2023

Agribusiness is still the pillar for farmersâ€™ economy in Indonesia who, mostly, workfor agricultural sector. This also applies in regional economy in which agriculturalsector is the primary sector that becomes the basis for economy and gives sufficientcontribution Â to Â the Â regional economic development. However, Â the Â condition of Â thefarmersâ€™ Â economy Â has Â so Â far Â shown Â no Â significant Â development. The Constitution(UUD 1945) regulates national economy that embraces any fields, including the sus-tainable and environment-oriented agriculture, aiming at societyâ€™s prosperity in botheconomy and health. The research shows that there is no difference on benefit betweenorganic and non-organic agribusiness on fish, vegetable, eggs. Thus agribusiness isbetter developed Â conforming Â to Â the Constitution Â that Â signals Â environment-orientedagriculture.
Fiscal Decentralization, Economic Growth and Regional Development Inequality in Eastern Indonesia
Authors:   Pemerintah Kota Kediri, Farida Nur , Suman Agus ,   Universitas Brawijaya, Kresna Sakti Rachmad ,   Universitas Brawijaya
Published: January 2023

This study analyzes the relations between fiscal decentralization, economic growth, and regional development inequality in Eastern Indonesia using 2016-2019 panel data of thirteen Eastern Indonesia provinces obtained from Statistics Indonesia and the Directorate General for Fiscal Balance. Using simultaneous equations estimated through the Three-Stage Least Squares, this study finds that fiscal decentralization has not fully supported economic growth and correct the inequality in eastern Indonesiaâ€™s regional development. The mandate for managing the budget has not been optimally used by the local governments, indicated by poor allocation for productive expenditures and its decreasing proportion during the research period. It is caused by poor human resource quality in budget planning and management, which finally hinders the quality of public service and economic growth. Supports from physical and human capital are required to keep up with the occurring economic activities so that inequality in regional development in the area can be reduced.