bluuebunny/crossref_metadata_2025 huggingface dataset:
A survey of the current status of the signage of the Vietnam National University Ho Chi Minh City system
Authors:   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam, Nguyễn Thị-Như Ngọc , Phạm Thị-Tú Duyên ,   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam, Đặng Nguyễn-Ngọc Dung ,   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam, Phạm Ngọc-Thanh Tâm ,   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam, Dương Nhã Văn ,   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam, Trần Khánh Vy ,   Faculty of English Linguistics & Literature, University of Social Sciences and Humanities, VNUHCM, Vietnam
Published: October 2023

Linguistic landscape plays an important role in the globalization of the higher education environment. In particular, the signage system is seen as a fundamental part of the linguistic landscape, contributing to the promotion of university systems’ images and identities in the world. However, there has not been sufficient attention on the signage use at many universities in Vietnam, and one of them is the Vietnam National University Ho Chi Minh City system (VNUHCM). This survey aims at examining the current status of the signage use at four of the six VNUHCM member universities. Using quantitative methods, the paper synthesized and analyzed 564 signs, including monolingual ones in Vietnamese and in English, bilingual ones in Vietnamese and English, and multilingual ones which were all collected via fieldwork during the first quarter of 2020. Based on the signage guidelines of some globally popular university systems in the top of the QS Rankings 2021, the paper points out it is the lack of a signage guide manual at the VNUHCM system that leads to inconsistencies in the signage use at its member universities. Then, the survey findings reveal some specific problems and suggestions with the hope to encourage the improvement of the linguistic landscape at the VNUHCM system. Also, the research may serve as a useful reference for other universities in Vietnam.
Improving the quality of scientific research associated with teaching and learning activities at universities
Authors:   University of Social Sciences & Humanities, VNUHCM, Viet Nam, Huynh Quoc Thang
Published: October 2023

In order to meet the requirements of the industrialization and modernization of the country in the new situation, scientific research activities associated with teaching and learning at universities are very important. The context of the industrial revolution 4.0 along with the process of international integration increasingly requires a comprehensive view to further improve the quality of this activity as an important content of the university culture building strategy of each school in the new period. On the basis of inheriting some previous research results by the main method of direct participation, the field surveys combined with the references to the secondary and primary documents with the summary reports, as well as the in-depth interviews with some scientists, educational administrators, etc., and at the same time, through the interdisciplinary approach of education combined with pedagogy, psychology, culturology, sociology, etc., and based on the common views and guidelines of UNESCO, the Communist Party and the State of Vietnam on education, the article mainly focuses on the case study of the University of Social Sciences and Humanities (Vietnam National University Ho Chi Minh City) and Nguyen Tat Thanh University to find out common issues related to research topics at universities (public and private) in the current period. On that basis and from the classic arguments in relation to the principles of education compared with actual requirements, the article initially outlines the contents, which need to be promoted or adjusted and improved in both awareness and understanding about management and organization, do not only contribute to a clearer definition of the methods and methodologies for improving the quality of scientific research in human resource training in the different fields of science and engineering and technology, but also step by step go deeper into specific specialized fields such as culture, art, physical training and sports, tourism, etc., which is a growing trend in universities today.
Current status of agricultural tourism development in Con Chim - Tra Vinh
Authors:   University of Social Sciences & Humanities, VNU-HCM, Vietnam, HO BAO TIEU , HOÀNG CHÂU NGỌC MINH ,   University of Social Sciences & Humanities, VNU-HCM, Vietnam
Published: October 2023

Con Chim is a small islet with unspoiled beauty on the Co Chien river. Agricultural tourism activities in Con Chim officially exploits from September 2019, which is an attractive tourist destination today. This article aims to understand the current situation of agricultural tourism development in Con Chim. Field survey research methods, combined depth interviews and synthesizing secondary data on agricultural tourism are employed in this study. The results of the study show that agricultural tourism activity in Con Chim is developing at an early stage. All households are consensus when participating in the supplying of agricultural tourism products, accompanied by the effective management of the Department of Culture and Rural Development of Tra Vinh province and the professional advice of experts. This article contributes to an empirical study to the theory of agricultural tourism destination development and contributes to affirming that the model of agricultural tourism will be more likely to develop successfully when there is effective participation of all stakeholders. However, whether this operation is sustainable and stable in the long term, there needs to be more further research and a longer-term observation of tourism activities in Con Chim.
Service Quality on Customer Satisfaction and Its Impact on Customer Loyalty at KFC in South and Southeast Asia
Authors: Lin Dr. Jocelyn Lee Jia , Ling Dr. Hui Lim , Liem Dr. Gai Sin , Batul Ms. Atiba , Binti Shamsudin Nur Adnin Shazlyana , Binti Zainal Abidin Nur Afifah , Bt. Mohd. Farid Nur Aina Arisya , Binti Mohd. Shuhaimi Nur Alya Umairah , Kurniawan Egananda , Dutta Deepjyoti , Hasani Bhavesh K.
Published: October 2023

Kentucky Fried Chicken (KFC) is the world’s well-known global brand of fast food that has more than 26,000 restaurants in over 150 countries and territories around the world. Due to Its cheapness, quickness, and convenience, it has always become a global favorite meal for many people. However, the quality of services also plays an important role in KFC’s success as they apply customer-oriented services. Their empathy and reliability towards their products and services give many reviews on the internet. Although there are many top brands in the fast-food industry, KFC has succeeded in quickly developing its business as they are constantly expanding throughout the world. Therefore, their success raises an issue of how they maintain their customer’s loyalty. To better understand this research, an online survey has been created to collect the data needed. This survey involves 100 participants from Malaysia, Indonesia, and India through a questionnaire in a Google Form. The quantitative method was used with random sampling. The data were utilized with the regression test, one sample t-test, and f-test. Based on the findings, KFC's service quality has a favorable impact on customer loyalty in each country.
How Can Listening Contribute to Aviation Safety? EPLIS Paper 1 under the Spotlight
Authors:   Airspace Control Institute (ICEA), Ribeiro e Souza Paula , Faria Aragão Beatriz ,   Airspace Control Institute (ICEA)
Published: October 2023

Assessing listening for specific purposes involves understanding the nature of listening and making careful theoretical and practical decisions on the authenticity of the input, the type of tasks, mode of delivery, as well as the characteristics of the target test population. In a context of aviation language testing for licensing purposes, in which listening comprehension is central to aeronautical communications, test developers must guarantee that tests are valid, effective and reliable by complying with best practices. In this paper, the listening test of the Aeronautical English Proficiency Exam (EPLIS) for the Brazilian Airspace System will be appraised. EPLIS item development process will be examined in order to see how it contributes to the test construct validity, in terms of offering empirical evidence and theoretical rationales to ensure that the interpretations of test scores are meaningful for the uses and impact desired by its test developers.
The Performance of Brazilian Air Traffic Controllers in Radiotelephony Communications in English: the Controllers’ Perspective
Authors:   Department of Airspace Control, Andrade Natalia
Published: October 2023

Following the argument-based validity framework (M.E. Kane 2006, 2013), this paper aims at analyzing controllers’ perspectives of their performance in radiotelephony communications in English, utilizing data generated through the ongoing validation process of EPLIS, the Aviation English Proficiency Exam for Brazilian Air Traffic Controllers. This paper reports one phase of a broader multistage mixed-methods study and focuses on the consequences inference. Part of the data generated from a 65-item questionnaire answered by Brazilian Air Traffic Controllers who got proficiency Level 3 (considered non-operational) and Level 4 (considered by ICAO as the minimum level necessary to control aircraft using the English language) is analyzed. The questionnaire was divided into 3 parts: test-takers’ perceptions of the rating scale established by ICAO; test-takers’ perceptions of their proficiency while controlling aircraft in English; and problems they faced while controlling in English.
PENGUKUR JARAK DENGAN SENSOR ULTRASONIC PING))) BERBASIS MIKROKONTROLLER AT-MEGA 8535 DENGAN DATA LOGGING PADA KOMPUTER
Authors: _ Benny
Published: October 2023

Distance measurement and continuous recording when done manually can be tedious and predictable errors in recording. For it will do design a device capable of measuring and recording automatically. Tools that will be made using the ultrasonic sensor and microcontroller ATMega 8535 as a main components. Ultrasonic sensors to detect objects in front of about distance of 3 cm until 3 meters. The reflection of ultrasonic waves to be received back by the sensor, so that the ATMEGA85 microcontroller will know when the ultrasonic wave is emitted until it is received back. And then the microcontroller will processed and displayed on the LCD and sent to a computer for display with the time of recording.

Keywords : Measurement, sensor ultrasonic, microcontroller, data logging.

ABSTRAK

Pengukuran dan pencatatan jarak secara kontinyu jika dilakukan secara manual dapat membosankan dan diprediksi terjadi kesalahan dalam pencatatan. Untuk itu akan dilakukan rancang bangun suatu alat yang mampu melakukan pengukuran dan pencatatan secara otomatis. Alat yang akan dibuat menggunakan sensor ultrasonic dan Mikrokontroller ATMEGA 8535sebagai komponen utamanya. Sensor ultrasonic dapat mendeteksi benda didepannya dari jarak 3cm hingga 3 meter. Untuk mengetahui jarak suatu benda Mikrokontroller mentrigger sensor untuk mengirimkan gelombang ultrasonic ke benda yang akan diukur. Pantulan gelombang ultrasonic akan diterima kembali oleh sensor, sehingga Mikrokontroller ATMEGA85 akan mengetahui waktu gelombang ultrasonic dipancarkan sampai diterima kembali. Selanjutnya Mikrokontroller memanipulasi waktu menjadi jarak untuk ditampilkan pada LCD dan dikirim ke Komputer untuk ditampilkan bersama waktu saat pencatatan.

Kata kunci : Pengukuran, sensor ultrasonic, mikrokontroller, data logging.
PENGEMBANGAN PENGERING BEKU PEMBEKUAN VAKUM DENGAN PEMANASAN KONDENSER
Authors: _ Belyamin , Subarkah1 Rahmat , _ Nasruddin
Published: October 2023

Every year, West Kalimantan exports fresh aloevera abroad and at the same time the domestic industry imports aloevera powder produced by freeze drying process. If the freeze drying machine can be produced domestically, the aloevera product that became the mainstay of West Kalimantan can be processed in Indonesia. To achieve this long-term goal, a study that could result in freeze drying machine that can produce aloevera powder efficiently is needed. The process of designing, manufacturing and testing of vacuum freeze drying machine with condenser waste heat conducted at the Refrigeration Laboratory of Department of Mechanical Engineering UI. Vacuum freeze drying machine is designed and fabricated consisting of Chamber (there are containers placed material, the upper and lower heater) and Evaporator (cooling systems). This research has resulted a machine of freezing vacuum freeze dryers with heating condenser, working pressure -1 up to 3 millibars, the chamber temperature to minus or below 0 ºC, condenser temperature reaches 35 º C. In the drying process does not use a heating condenser then sublimation process completion time for 13 hours and obtained LOD values of ± 98.6%, while in the drying process that uses a heating condenser, it is time to 6.5 to 7 hours and obtained LOD values of ± 95 , 6%.

Keywords : aloevera, freeze drying, vacuum freeze

ABSTRAK

Setiap tahun Kalimantan Barat mengekspor lidah buaya segar ke luar negeri dan pada saat yang sama industri dalam negeri mengimpor serbuk lidah buaya yang dihasilkan dengan proses pengeringan beku. Jika dapat dihasilkan mesin pengering beku di dalam negeri, maka lidah buaya yang menjadi produk andalan Kalimantan Barat dapat diproses di dalam negeri. Untuk mencapai tujuan jangka panjang ini maka diperlukan suatu penelitian yang dapat menghasilkan mesin pengering beku yang dapat memproduksi serbuk lidah buaya dengan efisien. Proses perancangan, pembuatan dan pengujian mesin pengeringan beku vakum dengan panas buang kondenser dilakukan di Lab Refrigerasi Departemen Teknik Mesin UI. Mesin pengeringan beku vakum yang dirancang dan dibuat terdiri dari Ruang Uji (terdapat wadah meletakkan material, pemanas atas dan bawah) dan Ruang Evaporator (Sistem refrigerasi). Penelitian ini menghasilkan alat pengering beku pembekuan vakum dengan pemanasan kondensor dengan tekanan kerja -1 hingga 3 milibar, suhu ruang chamber mencapai minus atau dibawah 0ºC, suhu kondensor mencapai 35ºC. Pada proses pengeringan yang tidak menggunakan pemanasan kondensor maka waktu terselesaikannya proses sublimasi selama 13 jam dan didapatkan nilai LOD sebesar ± 98,6 % sedangkan pada proses pengeringan yang menggunakan pemanasan condenser maka waktunya menjadi 6,5 hingga 7 jam dan didapatkan nilai LOD sebesar ± 95,6 %.

Katakunci: aloevera, freeze drying, vacuum freeze
PERAN SERTA MASYARAKAT DALAM MENINGKATKAN KUALITAS LINGKUNGAN DAERAH ALIRAN SUNGAI CILIWUNG
Authors: Susilowati Wahyuni , Damianto Budi , Najam Achmad , Nurhayati Ida
Published: October 2023

Society participation is an important thing for increasing current river area of Ciliwung environmental quality. Society participation won’t be optimal if its implementation was not controlled and legislation execution was not done. For making society participation optimally, it must be made a flexible model of society empowerment. Model design covers the legislation, environmental management, monitoring, and evaluation that it is a synergy process. The most effective model is capable of afford society positive thinking about current river area of Ciliwung environmental quality. It must be followed with legislation execution, monitoring, and evaluation by government official.

Key words: empowerment, environmental, society

ABSTRAK

Keterlibatan masyarakat adalah hal yang sangat penting dalam meningkatkan kualitas lingkungan DAS Ciliwung. Keterlibatan masyarakat akan menjadi tidak optimal jika pelaksanaannya tidak terkontrol dan penegakan peraturan belum dilakukan. Untuk mengoptimalkan peran serta masyarakat perlu dibuatkan sebuah model pemberdayaan masyarakat yang secara fleksibel dapat diterapkan. Rancangan model mencakup segi perundangan, pelaksanaan pengelolaan lingkungan DAS, dan monitoring serta evaluasi, yang harus dilaksanakan secara sinergis. Model pemberdayaan yang paling efektif adalah model yang dapat memunculkan persepsi positif dari masyarakat sehingga kesadaran akan pentingnya peningkatan kualitas DAS Ciliwung dapat ditingkatkan yang diikuti penegakkan peraturan dan monitoring serta evaluasi dari aparat terkait.

Kata kunci: pemberdayaan, lingkungan, masyarakat
RANCANG BANGUN APLIKASI SISTEM INFORMASI MONITORING ABSENSI MAHASISWA POLITEKNIK NEGERI JAKARTA MENGGUNAKAN TEKNOLOGI NFC PADA ANDROID
Authors: Neforawati Indri , Fareza Muhammad Irdam , Juniarti Vida
Published: October 2023

Abstract

The activities of attendance taking by student is a routine activity that must be done before the classroom activities carried out. This study will simplify and improve the efficiency of the activities carried out by the attendance taking of the students by using android application for attendance information system using near field communication technology and web applications for process monitoring absenteeism. By using a web application allows administrators to perform monitoring and evaluation of teaching and learning activities and attendance data management student attendance at PBM in the classroom.

Keywords : Attendance Taking, Android Application, Web Application, Near Field Communication (NFC), Attendance Information System

Abstrak

Kegiatan absensi yang dilakukan oleh mahasiswa adalah sebuah kegiatan rutin yang harus dilakukan sebelum kegiatan belajar mengajar dilakukan. Penelitian ini akan mempermudah dan meningkatkan efisiensi dalam kegiatan absensi yang dilakukan oleh para mahasiswa yaitu dengan menggunakan aplikasi android untuk sistem informasi absensi dengan menggunakan teknologi near field communication dan aplikasi web untuk proses monitoring absensi. Dengan menggunakan aplikasi web memudahkan administrator untuk melakukan kegiatan monitoring evaluasi belajar mengajar dan pengelolaan data absensi kehadiran mahasiswa pada PBM di kelas.

Kata Kunci : Absensi, Aplikasi Android, Aplikasi Web, Near Field Communication (NFC), Sistem informasi absensi
DESAIN AKUISISI DATA KUALITAS DAYA LISTRIK
Authors: Ismujianto Ismujianto , Isdawimah Isdawimah
Published: October 2023

ABSTRACT.The electric power delivered by the utility to the consumer have a good quality if the value of the voltage and frequency in accordance with applicable regulations. Indonesia's standard low voltage is 220V system for single phase, 380V 3-phase system with a frequency of 50 Hz and is a pure sinusoidal waveform. If the value is not met, then the quality of the electrical power is reduced and can cause various disorders. Harmonics are the biggest cause of decreasing the electric power quality. Harmonics can come from utilities (electric power source) itself or derived from the load used by consumers. Power quality control can be done if it is known that there are values of electrical quantities compared to standard values to be achieved. Given the existing value changes so quickly and the necessary data is the latest data, it is necessary to acquisition of data continuously. In this study realized a data acquisition system design of electric power quality for electric power quality control continuously to view data in real time. Data acquisition system are made not only to show the value of kWh, but also other quantities related to the electric power quality, such as: fluctuations in voltage, current, frequency, power, power factor, energy and THD. Some equations are used to display data in the form of: numbers, waveform, vector diagrams and graphs.Key words : Power quality, data acquisition, harmonic, real timeABSTRAK.Daya listrik yang dikirimkan oleh utilitas ke konsumen mempunyai kualitas yang baik apabila nilai tegangan dan frekuensinya sesuai dengan ketentuan yang berlaku. Standar tegangan rendah di Indonesia adalah 220V untuk sistem satu fasa, 380V untuk sistem 3 fasa dengan frekuensi 50 Hz dan bentuk gelombangnya adalah sinusoidal murni.Apabila nilai tersebut tidak terpenuhi, maka kualitas daya listriknya berkurang dan dapat menyebabkan berbagai gangguan. Harmonisa merupakan penyebab terbesar dalam hal penurunan kualitas daya listrik. Harmonisa dapat berasal dari utilitas (sumber daya listrik) itu sendiri atau berasal dari beban yang digunakan oleh konsumen. Pengendalian kualitas daya listrik dapat dilakukan bila diketahui nilai besaran listrik yang ada dibandingkan dengan nilai standar yang ingin dicapai. Mengingat perubahan nilai yang ada demikian cepat dan data yang diperlukan adalah data terbaru, maka perlu dilakukan akuisisi data secara terus menerus. Dalam penelitian ini direalisasikan suatu desain sistem akuisisi data kualitas daya listrik untuk mengontrol kualitas daya listrik secara terus menerus dengan tampilan data secara real time. Sistem akuisisi data yang dibuat tidak hanya menampilkan nilai kWh, tetapi juga besaran lain yang terkait dengan kualitas daya listrik, seperti: fluktuasi tegangan, arus, frekuensi, daya, power faktor, energi dan THD. Beberapa persamaan digunakan untuk menampilkan data dalam bentuk: angka, bentuk gelombang, vektor diagram dan grafik.Kata kunci: Power quality, akuisisi data, harmonic, real time
EFEK UAP BERTEKANAN PADA VISKOSITAS MINYAK OLI TERHADAP WAKTU ALIR DALAM MESIN SIMULATOR INJEKSI UAP BERBASIS PLC DAN SCADA
Authors: Sutarna Nana , Ardhillah Chandra , Suherman Azis , Ardiyanti Ririn
Published: October 2023

ABSTRACTThe crude oil inside of the earth have variant in viscosity depend on the gravity index (API). Based on the differences of viscosity, the crude oil are divided within light oil and heavy oil. The heavy oil is very difficult to be pumped than the light oil because have high viscosity. The oil viscosity can be reduced by giving pressurized steam. the pressurized steam is produced from a steam injection which it goes into the reservoir. The temperature and pressure of steam are measured by a sensor. The result of experiment illustrates that the oil getting pressurized steam show decrease index viscosity so the oil is easier to be pumped. It can be proved with increasing suction ability until 45% for Pertamina Prima oil XP SAE 40W-50 and 50% for CGI Vespa oil SAE 30. The experimental data also describes a link between rising temperatures to increasing pressure inside of the steam tube which tends to linier. The overall of process is controlled and monitored through PLC and SCADA. PLC as a controller will process the signals coming from sensors and then their measurement is displayed via SCADA. SCADA as the window of display show the simulation of sistem and direct measurement so all of the result always refurbished.Keywords: Steam Injection, Pressure, PLC, SCADAABSTRAKMinyak yang ada diperut bumi memiliki variasi viskositas yang berbeda berdasarkan indek gravitasi menurut American Petroleum Indexs (API). Perbedaan tersebut menyebabkan minyak digolongkan pada minyak type ringan (light oil) dan minyak type berat (heavy oil). Untuk minyak type berat sangat sulit untuk dipompa disbanding minyak tipe ringan karena memiliki viskositas yang tinggi. Viskositas minyak dapat diturunkan dengan metode pemberian uap berinjeksi. Uap bertekanan dihasilkan dari sebuah mesin steam injection miniature yang dialirkan ke reservoir minyak. Suhu dan dan tekanan yang dihasilkan uap diukur menggunakan sebuah sensor. Hasil percobaan menunjukkan bahwa minyak yang diberi injeksi uap bertekanan mengalami peningkatan kemampuan daya hisap sebesar 45% untuk minyak oli Pertamina Prima XP SAE 40W-50 dan 50% untuk minyak oli CGI Vespa SAE 30. Hasil percobaan juga menunjukkan adanya hubungan antara peningkatan suhu terhadap peningkatan tekanan di dalam tabung steam yang cenderung linier. Sistem di kendalikan oleh PLC dan SCADA. PLC difungsikan untuk mengontrol aktivitas sensor sebagai input dan memprosesnya yang kemudian hasilnya ditampilkan melalui SCADA. Fungsi SCADA adalah untuk memonitoring keseluruhan aktivitas sistem yang ditampilkan dalam bentuk visual pada layar monitor. Pada menu tampilan SCADA ditunjukkan aksi pengukuran secara langsung sehingga hasilnya selalu dapat diperbaharui.Keywords: Injeksi uap, tekanan, PLC dan SCADA
Analisis Investasi dan Penetapan Harga Jual Rumah Berbasis Hibrid Markup - Internal Rate of Return
Authors: Widodo Jojok
Published: October 2023

Peningkatan jumlah penduduk dari tahun ke tahun dapat mempengaruhi permintaan rumah tinggal oleh konsumen.  Hal ini menjadi kesempatan bagi investor untuk melakukan bisnis investasi pada proyek konstruksi pembangunan perumahan. Namun di sisi lain banyak investor yang mengalami kerugian dari bisnis ini akibat kesalahan dalam menentukan nilai jual produk. Oleh karena itu, perlu dilakukan penelitian tentang penetapan harga jual produk dan analisa kelayakan investasinya. Metode yang digunakan pada penelitian ini adalah metode hybrid mark-up dan Internal Rate of Return (IRR). Mark-up digunakan untuk menentukan nilai jual produk rumah melalui analisa Cost Plus Pricing, sedangkan analisa investasi atas penetapan harga tersebut menggunakan IRR. Analisa ini diimplementasikan pada kasus penelitian yaitu Perumahan Cempaka Village agar menghasilkan analisa yang riil. Hasil penelitian menunjukkan bahwa metode mark-up menggunakan cost plus pricing dapat diterapkan untuk menentukan harga jual produk pada perumahan tersebut agar mendapatkan keuntungan yang layak. Nilai mark-up yang menghasilkan keuntungan yang layak adalah 40% dan menghasilkan harga jual per tipe 24/60, 47/72 dan 50/72 adalah Rp 143.550.159, Rp 234.406.509 dan Rp 277.720.507. Dampak dari penetapan harga tersebut menghasilkan sejumlah arus kas yang dapat dianalisa menggunakan IRR untuk menentukan kelayakan atas investasi tersebut. Hasil analisa investasi tersebut adalah nilai NPV Rp 1.688.203.568, IRR 13,82% dan PP hampir 12 bulan. Penelitian ini juga menghasilkan persamaan regresi linier yang dapat digunakan untuk memprediksi nilai IRR berdasarkan nilai mark-up yang ditetapkan. Persamaan regresi linier yang dihasilkan adalah  dengan nilai pengaruh mark-up terhadap IRR sebesar 92%.
PENURUNAN NOISE FIGURE PERFORMANCE (FN) PADA HBT SI / SI 1-X GEX BERDASARKAN PENGATURAN STRIPE EMITER AREA (AE) DAN FRACTION MOLE (X).
Authors: Alamsyah Tossin , Hartanto Djoko , Poespawati NR
Published: October 2023

Paper ini membahas pengaruh perubahan stripe emiter area (Ae) dan fraction mole (x) terhadap unjuk

kerja HBT SiGe antara lain Resistensi parasitis RB dan RC, fT, fmaks, current gain (β) serta noise figure

(Fn,), model dikembangkan dari HBT SiGe IBM generasi kedua dengan Ae 0,1810 m2. Saat Ae

diturunkan menjadi Ae 0,1210 m2 dan Ae 0,0910 m2 dan fraction mole (x) dinaikkan menjadi dua

kali (2) maka parameter RB, dan β mempunyai relasi positif sedangkan RC , fT, fmaks negatif terhadap

perubahan tersebut. Model HBT SiGe dengan x: 0.1 dan Ae:0,1810 m2 mempunyai nilai Fn minimum

terendah dibanding dengan Ae 0,1210 m2 dan 0.0910 m2 yaitu 0.57 dB , 0.64 dB, 0.69 dB. Jika

nilai fraction mole (x) diturunkan 50% , menyebabkan kenaikkan Fn yang tidak linier yaitu 77%, 79%

dan 89% dari nilai semula. Relasi noise figure (Fn) dengan stripe emiter area (Ae) dan fraction mole (x)

diekspresikan dengan relasi berikut ; F k A x n e. 0  , jadi noise figure (Fn) dapat diperkecil

dengan memperarea stripe emiter area (Ae) dan menaikkan fraction mole (x).

Kata kunci : Noise Figure (Fn), stripe emiter area (Ae), fraction mole (x), SiGe HBT

ABSTRAK

Paper ini membahas pengaruh perubahan stripe emiter area (Ae) dan fraction mole (x) terhadap unjuk

kerja HBT SiGe antara lain Resistensi parasitis RB dan RC, fT, fmaks, current gain (β) serta noise figure

(Fn,), model dikembangkan dari HBT SiGe IBM generasi kedua dengan Ae 0,1810 m2. Saat Ae

diturunkan menjadi Ae 0,1210 m2 dan Ae 0,0910 m2 dan fraction mole (x) dinaikkan menjadi dua

kali (2) maka parameter RB, dan β mempunyai relasi positif sedangkan RC , fT, fmaks negatif terhadap

perubahan tersebut. Model HBT SiGe dengan x: 0.1 dan Ae:0,1810 m2 mempunyai nilai Fn minimum

terendah dibanding dengan Ae 0,1210 m2 dan 0.0910 m2 yaitu 0.57 dB , 0.64 dB, 0.69 dB. Jika

nilai fraction mole (x) diturunkan 50% , menyebabkan kenaikkan Fn yang tidak linier yaitu 77%, 79%

dan 89% dari nilai semula. Relasi noise figure (Fn) dengan stripe emiter area (Ae) dan fraction mole (x)

diekspresikan dengan relasi berikut ; F k A x n e. 0  , jadi noise figure (Fn) dapat diperkecil

dengan memperarea stripe emiter area (Ae) dan menaikkan fraction mole (x).

Kata kunci : Noise Figure (Fn), stripe emiter area (Ae), fraction mole (x), SiGe HBT
Pengaruh Tinggi Pasir Terhadap Penentuan Nilai Permeabilitas Pasir
Authors: RG Dewi Chandra RG, Dadang Mh B , Mh B Dadang
Published: October 2023

A mold with sand casting consists activities such as placing a pattern in the sand to form the cavity, making the canal system, filling the cavity with molten metal which is still able to be solidified, dismantle mold casting product containing and cleaning castings. Until now, the sand mold casting process is still the first choice of foundry industries especially for small industries, the products are widely used for cylinder blocks and drain pipes, the quality of the casting is influenced by permeability. Permeability is the measure of whether a medium pore easily passed by the fluid. Permeability of the sand indicates the ability of sand in the water escape. The structure and texture as well as other organic elements took part in raising the rate of permeability of the sand. The sand with high permeability increase infiltration rate and thus, reduce the rate of water flow. In making this sand permeability test equipment used design concept consisting U. Tube Manometers Instrument Stand Pipe compactor, speciment Holder, Flowmeter, Air Pressure Regulator, Frame, Hose Connector, Hose Connector to the compressor, the air volume of 2000 liters given, test results showed that the greater height of the sand the greater the value of permeability. Any additional height by 1 cm sand, will increase the value of permeability of sand around 0.04 until 0.0693.

Keyword: Value of Permeability of Sand

Abstrak

Cetakan dengan pengecoran pasir melibatkan kegiatan seperti menempatkan pola dalam kumpulan pasir untuk membentuk rongga cetak, membuat sistem saluran, mengisi rongga dengan pencetakan logam cair, yang memungkinkan logam cair untuk membekukan, membongkar cetakan pengecoran produk yang mengandung dan pembersihan coran. Sampai saat ini, proses pengecoran cetakan pasir masih merupakan andalan industri pengecoran terutama industri kecil, produk yang banyak digunakan untuk blok silinder dan pipa saluran, kualitas pengecoran dipengaruhi oleh permeabilitas. Permeabilitas adalah ukuran pori-pori media apakah mudah dilewati oleh fluida. Permeabilitas pasir menunjukkan kemampuan pasir di air keluar. Struktur dan tekstur serta unsur organik lainnya ikut ambil bagian dalam menaikkan laju permeabilitas pasir. Pasir dengan kenaikan permeabilitas laju infiltrasi yang tinggi dan dengan demikian, mengurangi laju aliran air. Dalam pembuatan alat uji permeabilitas pasir menggunakan konsep desain yang terdiri U. Tube manometer Stand Instrumen pemadat Pipa, spesimen Holder, flowmeter, Air Regulator Tekanan, Frame, Hose Connector, Hose Konektor ke kompresor, volume udara tahun 2000 liter yang diberikan, hasil tes menunjukkan bahwa tinggi lebih besar dari pasir besar nilai permeabilitas. Setiap ketinggian tambahan dengan pasir 1 cm, akan meningkatkan nilai permeabilitas pasir sekitar 0,04 sampai 0,0693.

Kata Kunci: Nilai Permeabilitas Pasir
MODERN APPROACHES TO FINANCIAL RISK MANAGEMENT: FROM THEORY TO PRACTICE
Authors:   State Tax University, Ananieva Yuliia
Published: October 2023

The article considers the importance and main aspects of financial risk management in the conditions of the modern globalized world. The authors emphasize the relevance of the problem, examining theoretical approaches and modern methods of risk assessment and management. Special emphasis is placed on practical recommendations that will help organizations effectively cope with financial challenges and ensure sustainable development. The article also includes an analysis of technological innovations in the field of risk management and their impact on the strategic planning of companies. The material concludes with conclusions that summarize the main theses of the study and suggest directions for further scientific development in this area. the role of international cooperation and global standards in the field of financial risk management is highlighted. The authors consider how globalization and international integration affect the risk management strategies of various companies. In addition, the article analyzes the ethical aspects of risk management, taking into account the social responsibility of business and its impact on stakeholders. Special attention is paid to the practical application of theoretical knowledge. The authors provide specific examples of the implementation of modern risk management techniques in various sectors of the economy, demonstrating their effectiveness and practical value. It is emphasized that the correct approach to financial risk management can be a key success factor for modern organizations, helping them adapt to rapidly changing market conditions and ensure long-term competitiveness. Psychological aspects of risk management are considered, including behavioral factors that can influence decision-making in the field of finance. Understanding these aspects is essential for developing effective risk management strategies and approaches. The need for continuous training and adaptation in the conditions of constant changes in the financial markets is substantiated. The modern business world requires from specialists deep knowledge, flexibility and readiness to quickly respond to new challenges. It has been proven that financial risk management is not only an important component of a successful business strategy, but also a key element of corporate culture, which contributes to the creation of trust between stakeholders and ensuring the stability and long-term development of the organization.
SKRINING FITOKIMIA INFUSA DAUN SUNGKAI (Peronema canescens Jack.) DENGAN METODE REAKSI WARNA
Authors: Rahmawati Suci , Marliza Marliza , Sari Rose Intan Perma , Wirahmi Nori , Oktoviani Oktoviani , Sipriyadi Sipriyadi
Published: October 2023

Sungkai (Peronema canescens Jack) was used traditionally as a medicine to help relieve fever, malaria and flu. In general, people was used sungkai leaves in the form as infusion. This study was aimed to screening of secondary metabolite of Sungkai leaf infusion using the color reaction method. The sample in this study was sungkai leaf that obtained from Bengkulu city. The infusion was obtained by boiling 10 gram of sungkai leaf simplicia with 100 ml of distilled water for 15 minutes at 90 0C until a concentration of 10% (w/v) was obtained. Secondary metabolite screening was carried out using the color reaction method to identify alkaloids, flavonoids, saponins, tannins and steroids. Phytochemical screening using specific reagents with the test was repeated three times. The results were showed that sungkai leaves infusion was positive in alkaloid test as evidenced by the presence of white precipitate with Mayer reagent, brown precipitate with Wagner reagent, and orange precipitate with Dragendorff reagent. Positive results were also shown in flavonoid, saponin and tannin tests. While, negative result was seen in steroid test using Liebermann Burchard reagent. In this study it can be concluded that sungkai leaf infusion positively contains alkaloids, flavonoids, saponins and tannins.
PEMANFAATAN EKSTRAK ETANOL BUNGA ROSELLA (Hibiscus Sabdariffa L) DALAM FORMULASI LIP BALM
Authors: Dwi Ramadhani Wulan , Rais Khasanah Heti , Krisyanella  , Putri Ovie Panca
Published: October 2023

Lip balm merupakan sediaan kosmetik dengan komponen utama yaitu lilin, lemak dan minyak dari ekstrak alami dengan tujuan untuk mencegah terjadinya kekeringan pada bibir. Bunga rosella dapat memberikan efek melembabkan karena banyak mengandung zat yang berguna pada bibir, bunga rosella ini identik dengan rasa asam sehingga memberikan sensasi segar, rasa asam pada bunga rosella adanya kandungan vitamin c, asam sitrat, asam malat serta glikolik. Tujuan dari penelitian ini adalah untuk mengetahui Karakteristik Sediaan Lip Balm Ektrak Etanol Bunga Rosella (hibiscus sabdariffa L) dengan beberapa variasi konsentrasi 1,5%, 2,5%, dan 3,5%. Metode penelitian yang digunakan adalah Metode Eksperimental. Berdasarkan pengujian yang telah dilakukan pada sediaan lip balm dari ekstrak etanol bunga rosella (hibiscus sabdariffa L) pada formula 0, I, II, dan III memenuhi syarat uji organoleptis, uji homogenitas, uji ph, uji titik lebur, stabilitas sediaan, uji daya sebar, uji daya oles, dan uji iritasi. Berdasarkan hasil penelitian yang telah dilakukan didapatkan kesimpulan bahwa karakteristik formula 0, I, II, dan III memenuhi standar lip balm pada uji organoleptis, uji homogenitas, uji ph, uji titik lebur, stabilitas sediaan, uji daya sebar, uji daya oles, dan uji iritasi. Sedangkan pada uji hedonik (kesukaan) formula III adalah formula yang paling disukai dengan tingkat kesukaan terhadap warna, tekstur dan aroma paling tinggi.
POLA PERESEPAN OBAT ANTIDIABETIK PADA PASIEN DIABETES MELITUS TIPE 2 DI PUSKESMAS TEGALREJO YOGYAKARTA PERIODE OKTOBER-NOVEMBER 2022
Authors: Aisyah  , Qarriy Aina Urfiyya
Published: October 2023

Diabetes melitus (DM) merupakan penyakit kronis yang ditandai dengan tingginya kadar glukosa dalam darah karena gangguan sekresi insulin. Daerah Istimewa Yogyakarta termasuk ke dalam 4 provinsi dengan prevalensi diabetes melitus tertinggi di Indonesia pada tahun 2018, yaitu sebesar 3,1%. Diabetes melitus juga termasuk ke dalam 5 besar penyakit di Puskesmas Tegalrejo pada tahun 2022. Penelitian ini bertujuan untuk mengetahui pola peresepan obat antidiabetik pada pasien DM tipe 2 di Puskesmas Tegalrejo Yogyakarta. Penelitian ini menggunakan rancangan observasional analitik dengan pengambilan data secara retrospektif pada resep pasien DM tipe 2 bulan Oktober-November 2022. Pengambilan sampel menggunakan teknik purposif, sejumlah 85 resep. Analisis data secara kuantitatif pada karakteristik pasien, jenis dan golongan antidiabetik, serta kajian tepat dosis berdasarkan PERKENI 2021. Hasil penelitian menunjukkan DM tipe 2 lebih banyak terjadi pada perempuan (77,7%) dan usia > 65 tahun (47,1%). Pasien DM tipe 2 dengan penyakit penyerta (84,7%) lebih banyak dibandingkan DM tipe 2 tanpa penyakit penyerta (15,3%). Kesimpulan pada penelitian ini, antidiabetik yang digunakan adalah golongan biguanid yaitu metformin 500 mg sebesar 66,4% dan golongan sulfonilurea yaitu glimepirid 1 mg sebesar 33,6 %. Ketepatan dosis obat antidiabetik yaitu tepat dosis sebesar 100%.
On the eigenvalue-separation properties of real tridiagonal matrices
Authors: Wu Yan , Kohaupt Ludwig
Published: October 2023

In this paper, we give a simple sufficient condition for the eigenvalue-separation properties of real tridiagonal matrices T. This result is much more than the statement that the pertinent eigenvalues are distinct. Its derivation is based on recurrence formulae satisfied by the polynomials made up by the minors of the characteristic polynomial det(xE-T) that are proven to form a Sturm sequence. This is a new result, and it proves the simple spectrum property of a symmetric tridiagonal matrix studied in Grünbaum's paper. Two numerical examples underpin the theoretical findings. The style of the paper is expository in order to address a large readership.
Relato de caso: Reabilitação à vítima de trauma raquimedular relacionada a sistematização da assistência de enfermagem em Araguaína/Tocantins
Authors: Sousa Amanda Brandão de , Silva Amanda Kêmilly Almeida da , Silva Karina Maria Mesquita , Gener Miguel Emílio Sarmiento
Published: October 2023

A Sistematização da Assistência de Enfermagem (SAE) se faz necessária para melhor assistência prestada pelo profissional, por meio do conhecimento teórico (cientifico-clínico) e as ações desenvolvidas, possibilitando uma troca de informações sobre a condição do paciente com os demais profissionais para uma intervenção unificada. É direito de todos ter dignidade e independência em suas vidas, sendo a reabilitação a peça fulcral na reintegração social,  recuperação e saúde física, mental, e geral. Objetivou-se relatar a experiência de vítima de Trauma Raquimedular (TRM) sob utilização da Sistematização da Assistência de Enfermagem no serviço de reabilitação. O escopo deste trabalho deu-se por um relato de caso e revisão bibliográfica de cunho exploratória descritiva, com método e técnicas qualitativas. Foi usado questionário composto por 19 perguntas, confeccionado e validado pelos autores segundo o tema delineado e respondido pelo pesquisado para  obter as informações necessárias. Como parecer final desta pesquisa, salientou-se o protagonismo e imprescindível atuação da enfermagem como integrante da equipe multiprofissional diante uma vítima de TRM, em que se emprega as gestões processuais e assistencial em consonância ao raciocínio clínico sustentados pela cientificidade da Sistematização conferida em legislação vigente, a fim de proporcionar recuperação holística e efetiva.
Competências colaborativas desenvolvidas em atividades de educação interprofissional
Authors: Fuzeti Heli Marcos Freitas , Pereira Queli Lisiane Castro , Peres Juliana Gonçalves Camilo , Ferreira Adriano Borges , Suchara Eliane Aparecida
Published: October 2023

Descrever as competências colaborativas desenvolvidas a partir das atividades indutoras da educação interprofissional no PET/Saúde Interprofissionalidade na atenção básica de Pontal do Araguaia -MT. Metodologia: Trata-se de um estudo de abordagem quantitativa, baseado em ação desenvolvida no transcorrer da execução do PET-Saúde Interprofissionalidade, no ano de 2020. Para a coleta de dados foi utilizado a escala Likert elaborada pelos pesquisadores e um questionário com questões sociodemográficas. Participaram discentes e docentes dos cursos da área de saúde da Universidade Federal de Mato Grosso, Campus Araguaia e servidores da atenção básica de Pontal do Araguaia. Resultados: Participaram do estudo 29 (54,7%) discentes, 15 (28,3%) preceptores e 9 (17%) tutores. Houve predominância de jovens 31(58,5%) do sexo feminino 37(69,8%). Todas as competências colaborativas foram desenvolvidas durante o programa. Destacam-se o funcionamento da equipe, clareza de papeis e liderança colaborativa com os maiores percentuais (acima de 77%) de concordância. As medidas restritivas impostas pelo cenário pandêmico, não impediram, porém, influenciaram o desfecho das competências comunicação interprofissional, atenção usuário centrada e resolução de conflitos, devido a impossibilidade de proporcionar momentos de troca de ideias e experiências de forma presencial. Conclusão: As atividades indutoras promovidas pela educação interprofissional e desenvolvidas na atenção básica possibilitaram o desenvolvimento das competências colaborativas.
Effect of insomnia on severity of condition and quality of life of patients with disabilities
Authors: Akavov A. N. , Korabel'nikova E. A. , Baranov M. L. , Dzhangil'din Yu. T. , Gadzhieva U. Kh.
Published: October 2023

Aim. To study the effect of insomnia on the severity of the condition and quality of life in patients with disabilities.

Materials and methods. A prospective cohort study was conducted from 2019 to 2022, in which 100 patients participated. As a clinical model of persons with disabilities, patients who suffered cerebrovascular accidents were selected. The patients were divided into two groups: the main group – 50 patients who had suffered acute cerebrovascular accident and suffered from insomnia, and the comparison group – 50 patients who had suffered acute cerebrovascular accident, without concomitant insomnia. All patients were examined by the Rankin Scale, sleep quality questionnaires (Pittsburgh Sleep Quality Questionnaire and Insomnia Severity Scale) and the SF-36 Quality of Life Questionnaire.

Results and conclusions. The study made it possible to prove the influence of insomnia on the severity of patients' condition and their quality of life. This indicates the relevance of the detection and correction of sleep disorders in the complex treatment of patients with disabilities who have suffered acute cerebrovascular accident, which can increase the effectiveness of therapy for this category of patients.
Association between course of multiple sclerosis and polymorphisms of calcitriol receptor gene VDR FokI (rs2228570), BSMI (rs1544410), TaqI (rs731236), ApaI (rs7975232)
Authors: Lunev K. V.
Published: October 2023

Objective. To evaluate the relationship between the frequency of exacerbations and the rate of progression of multiple sclerosis (MS) and polymorphisms of the calcitriol receptor gene VDR FokI (rs2228570), BSMI (rs1544410), TaqI (rs731236), ApaI (rs7975232).

Material and methods. Ninety patients with relapsing-remitting MS took part in the study. All patients are Caucasians, were born and lived in the Altai region of the Russian Federation. Genotyping was performed by TaqMan probes.

Results. A protective effect of the TT genotype VDR FokI (rs2228570) on the risk of increasing disability of more than 0.75 points per year according to the expanded disability scale was found (p = 0.034). The protective effect of the TT genotype of the TaqI polymorphism (rs731236) on exacerbations of MS more than once a year (p = 0.041) was also revealed. Associations of the MS course with other studied polymorphisms were not found.

Conclusions. It can be assumed that the VDR FokI (rs2228570) and TaqI (rs731236) polymorphisms may influence the course of relapsing-remitting MS. The mechanisms of these influences may include the modulation of immune-inflammatory responses in the central nervous system, which are a key link in the MS pathogenesis.
Vincristine‑induced peripheral neuropathy in children with acute lymphoblastic leukemia: Clinical and instrumental characteristics, search for new solutions
Authors: Koryakina O. V. , Kovtun O. P. , Mikhailovskaia S. I. , Rezaykin A. V. , Lebedev I. A. , Zakharchuk E. V.
Published: October 2023

Objective. To evaluate clinical and electroneuromyographic characteristics of vincristine polyneuropathy in children with acute lymphoblastic leukemia.

Materials and methods. A single-centre prospective cohort study involved 106 children with acute lymphoblastic leukemia, aged 3 to 17 years, with vincristine polyneuropathy; clinical and electroneuromyographic data were analyzed.

Results. In the majority of cases, 84.9 % (n = 90) of patients, vincristine polyneuropathy debuted during the induction phase of chemotherapy. The clinical picture was dominated by combined neurological disorders in 67.9 % (n = 72) cases, with sensory and motor disorders dominating. Sensory dysfunction was manifested predominantly by pain in the lower extremities, changes in the motor sphere were characterized by the development of distal paresis of the lower extremities. In 66.0 % (n = 70) of patients, neurological disorders corresponded to the 2nd degree of severity according to the toxicity scale (NCI-STAE). According to the ENMG study, all children had motor axonal neuropathy of the peroneal nerves.

Conclusions. The results of the study showed that the clinical picture of vincristine polyneuropathy is accompanied by sensory and motor symptoms. Currently, a complex of clinical and instrumental methods is used to verify the neurotoxic complication. The main objective method of diagnosis is an electroneuromyographic study. However, its capabilities are limited for determining the clinical manifestations associated with sensory disorders.