1,721,088 research outputs found
KAJIAN STUDI EKSPERIMENTAL HUBUNGAN RESPONS RESISTANSI SENSOR GAS METAL OXIDE TERHADAP SUHU DAN KELEMBABAN UDARA
Full text linkMUHAMMAD FATHUR RAHMAN. Kajian Studi Eksperimental Hubungan Respons Resistansi Sensor Gas Metal Oxide Terhadap Suhu dan Kelembaban Udara. Di Bawah Bimbingan WIDYANINGRUM INDRASARI, HARIS SUHENDAR.
Sensor gas metal oxide (MOX) merupakan salah satu jenis sensor gas yang mempunyai sensitivitas yang tinggi sehingga terdapat beberapa faktor yang memengaruhi dalam penginderaan sensor gas MOX, seperti suhu dan kelembaban udara. Penelitian ini merancang chamber terkontrol untuk mengkaji hubungan resistansi sensor MOX terhadap suhu dan kelembapan udara menggunakan metode eksperimental. Sistem ini dilengkapi dengan sensor BME280, sensor gas MOX, PTC Air Heater, peltier, heatsink, pompa vakum, keypad dan LCD serta Arduino Mega 2560. Pada penelitian ini telah dilakukan karakterisasi sensor dengan kesalahan relatif pada sensor suhu sebesar 0,653%; kelembaban sebesar 2,507%; dan tekanan sebesar 0,104%. Kemudian, sistem kontrol PID digunakan untuk mengatur suhu dengan parameter terbaik Kp = 0.2, Ki = 0.6, dan Kd = 0.8. Data respons sensor gas MOX dilakukan pada rentang suhu 31°C hingga 40℃ diambil sebanyak 10 kali pengulangan. Hasil penelitian menunjukkan adanya hubungan signifikan antara suhu dan kelembaban dengan resistansi sensor gas MOX. Suhu cenderung memiliki pengaruh langsung terhadap peningkatan resistansi, sedangkan kelembaban menunjukkan pengaruh yang lebih kompleks. Model regresi yang dihasilkan dari analisis data ini memberikan persamaan koreksi yang dapat digunakan untuk memperbaiki akurasi sensor dalam berbagai kondisi lingkungan.
Kata kunci. Sensor Gas Metal Oxide, Sistem Kontrol, PID, Resistansi
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MUHAMMAD FATHUR RAHMAN. Experimental Study of the Relationship between the Resistance Response of Metal Oxide Gas Sensors and Air Temperature and Humidity. Supervised by WIDYANINGRUM INDRASARI, HARIS SUHENDAR.
Metal oxide (MOX) gas sensor is one type of gas sensor that has high sensitivity so that there are several factors that affect the sensing of the MOX gas sensor, such as temperature and humidity. This study designed a controlled room to study the relationship between MOX sensor resistance to temperature and humidity using experimental methods. This system is equipped with a BME280 sensor, MOX gas sensor, PTC Air Heater, peltier, heatsink, vacuum pump, keypad, LCD and Arduino Mega 2560. In this study, sensor characterization has been carried out with a relative error on the temperature sensor of 0.653%; humidity of 2.507%; and pressure of 0.104%. Then, the PID control system is used to regulate the temperature with the best parameters Kp = 0.2, Ki = 0.6, and Kd = 0.8. MOX gas sensor response data was carried out at a temperature range of 31°C to 40℃ taken 10 times. The results showed a significant relationship between temperature and humidity with the resistance of the MOX gas sensor. Temperature tends to have a direct effect on resistance increase, while humidity shows a more complex effect. The regression model generated from this data analysis provides a correction equation that can be used to improve sensor accuracy under various environmental conditions.
Keywords: Metal Oxide Gas Sensor, Control System, PID, Resistanc
A Study on Students’ Anxiety vi Symptoms in Speaking Performance at First Grade of MAN 2 KUANTAN SINGINGI
No full textMuhammad Fathur Rahman (2022)
:
A Study on Students’ Anxiety
vi
Symptoms in Speaking
Performance at First Grade of
MAN 2 KUANTAN SINGINGI
The problem in this research is that many students experience symptoms
of anxiety in their speaking performances in front of the class shown by the tenth
grade students, especially in their recount text performances. Based on the
observation guide from the operational concept used, the researcher focused on 5
aspects of speaking ability that students had to master in their speaking
performance. In class, students display a recount text and then the researcher
analyzes and records their performance. The 5 aspects that the researchers focused
on in the observation were pronunciation, grammar, vocabulary, fluency, and
comprehension. This type of research is descriptive qualitative, the research
informants are tenth grade students majoring in Science and Social Sciences for
the 2021/2022 Academic Year of MAN 2 Kuantan Singingi in recount text
material. The key instrument of this research is the researcher himself. The
informant retrieval technique was carried out using the classroom observation
method. Determination of informants is done through direct observation in each
class to find informants who show symptoms of anxiety in their speaking
performance. The performance of the students in the researcher's class was
followed up by looking for relevant theories related to anxiety and public
speaking. The results of this study indicate that all students experience symptoms
of anxiety, the level of anxiety they experience varies in appearance. The 5
aspects of speaking that students must master in a recount text performance play a
major role in eliciting symptoms of student anxiety. Pronunciation, grammar,
vocabulary, fluency, and understanding of a story greatly affect the symptoms of
students' anxiety in speaking performanc
GAMBARAN PERSIAPAN DAN PEMBERIAN OBAT INTRAVENA OLEH PERAWAT BANGSAL DI SEBUAH RUMAH SAKIT DI JAWA TENGAH
Full text linkABSTRACT
Muhammad Fathur Rohman
Description of intravenous drug preparation and administration by ward nurses in a hospital in Central Java
xxviii + 56 Pages + 9 Tables + 2 Pictures + 6 Attachments
Errors in drug administration were ranked first (24.8%) out of the top 10 reported incidents in hospitals. This study aimed to describe the preparation and administration of intravenous drugs by ward nurses in a hospital in Central Java. The sample of this research contains of 62 ward nurses is who were selected with accidental sampling. To collect the data this study from “Infection Control Surveyor Worksheet” from the Centers for Disease Control and Prevention (CDC). Data were analyzed in frequency distribution with percentages in table form. Results of the characteristics of respondents showed 46 (74.20%) nurses were women, the level of education pursued by 41 nurses is an associate's degree, as many as 43 nurses have ≥ 3 years working time, and 42 nurses have attended training or socialization about injection safety. The results of this study showed 62 nurses performed intravenous drug preparation and administration procedures in imperfect categories, nurses did not change gloves when giving intravenous administration 62 (100%) nurses, did recapping 62 (100%) nurses, and did not wash hands before contact with patients 52 (83.87%) nurses. The conclusion of this study is that all nurses are less than perfect in preparing and administering intravenous drugs. It is expected that nurses can increase awareness of the importance of maintaining patient safety in intravenous drug administration.
Keywords: drug preparation and drug administration, intravenous, ward nurses
References: 57 (1995-2019
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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