bluuebunny/crossref_metadata_2025 huggingface dataset:
New Medicine Service as support for medication adherence by chronically ill patients
Authors: Waszyk-Nowaczyk Magdalena , Dymek Justyna , Drozd Mariola , Sierpniowska Olga , Stankiewicz Agnieszka , Jędra Artur , Jasińska-Stroschein Magdalena
Published: October 2023

Efektywna kontrola leczenia pacjenta chorego przewlekle to złożony proces, na który składa się nie tylko stosowanie odpowiednio dobranej farmakoterapii. Poza właściwą diagnozą i dobrze zaplanowanym postępowaniem terapeutycznym, kluczowym dla uzyskania zakładanych efektów będzie stosowanie się pacjenta do zaleceń terapeutycznych (adherence). Zjawisko to szeroko opisane w literaturze przejawia się m.in. nie rozpoczęciem terapii nowym lekiem, pomijaniem (świadomym lub nieświadomym) pojedynczych dawek leku, odstawieniem leku na stałe lub na jakiś czas, czy modyfikacją schematu dawkowania bez konsultacji z lekarzem. Wśród przyczyn non-adherence wymienia się między innymi brak odczuwania objawów choroby, subiektywną poprawę stanu zdrowia, długi czas terapii, obawę przed wystąpieniem działań niepożądanych, wielochorobowość i wielolekowość. Brak wiedzy nie pozwala pacjentom uczestniczyć w ustalaniu procesu terapii i osłabia ich motywację do przestrzegania zaleceń terapeutycznych. Przekazywanie wiedzy na temat choroby i leku, czy edukacja w zakresie prawidłowego jego stosowania, sprzyjają kształtowaniu odpowiednich postaw pacjentów chorych przewlekle wobec zaordynowanej terapii. Zadanie to spoczywa na wszystkich pracownikach systemu ochrony zdrowia – w tym również na farmaceutach. Obecne ustawodawstwo daje przedstawicielom tego zawodu medycznego pełne prawo do podejmowania takich działań, zdefiniowanych jako optymalizacja prowadzonej farmakoterapii, czy edukacja zdrowotna i promocja zdrowia. Realizacji powyższych celów ma służyć także jako jedno z proponowanych świadczeń opieki farmaceutycznej dla polskich pacjentów – konsultacja Nowy Lek. Nowy Lek został zapoczątkowany w roku 2011 w Wielkiej Brytanii, jako wsparcie pacjentów rozpoczynających stosowanie nowego leku ze wskazaniem do przewlekłej terapii. Doświadczenia płynące z pilotaży oraz wyniki prób klinicznych prowadzonych od tego czasu w wielu krajach europejskich pokazują, że świadczenie może wpływać w sposób optymalny i wielokierunkowy na zachowania zdrowotne pacjentów. W artykule przedstawiono założenia i cele takiej konsultacji farmaceutycznej w polskim systemie ochrony zdrowia, omówiono schemat postępowania wraz z proponowanymi formularzami ułatwiającymi dokumentowanie procesu, a także opisano korzyści z konsultacji w aspekcie poprawy adherence pacjentów chorych przewlekle.
On the foundation of quantum decision theory
Authors: Helland Inge Svein
Published: October 2023

Quantum decision theory is introduced here, and new basis for this theory is proposed. It is first based upon the author's general arguments for the Hilbert space formalism in quantum theory, next on arguments for the Born rule, that is the basis for calculating quantum probabilities. A basic notion behind the quantum theory foundation is that of theoretical variables, that are divided into accessible and inaccessible ones. This is here specialized to decision variables. It is assumed that each accessible variable can be seen as a function of a specific inaccessible variable. Another assumption is that there exist two maximal accessible decision processes in the given situation. Two basic assumptions behind the Born rule are 1) the likelihood principle, 2) the actor in question has motivations that can be modeled by a hypothetical perfectly rational higher being. The theory is illustrated by a medical example.
A Review of Transformation and Digital Literacy for the Sustainable Development in the Greater Mekong Subregion – Working Paper
Authors: Limna Pongsakorn
Published: October 2023

This comprehensive review delves into the crucial interplay between transformation and digital literacy as drivers of sustainable development in the Greater Mekong Subregion (GMS). As this region grapples with the challenges of economic growth, environmental sustainability, and social equity, understanding the dynamics of transformation – particularly the shift towards more sustainable industries and practices – is imperative. Equally significant is the role of digital literacy in enabling individuals and communities to harness the potential of digital technologies for personal and collective advancement. By examining the synergies between these two factors, this review sheds light on the strategies necessary to bridge disparities, protect the environment, and unlock the region's full potential in the context of sustainable development. The insights drawn from this working paper may offer valuable guidance for policymakers, practitioners, and stakeholders seeking to foster positive change in the GMS and, by extension, contribute to the global sustainability agenda.
Eficacia de la terapia fascial en la artropatía hemofílica. Revisión de la literatura
Authors: Sánchez Lozano Jesús , Martínez Pizarro Sandra
Published: October 2023

La artropatía hemofílica es una degeneración de una articulación, producida por una hemorragia recurrente en una articulación debido a la hemofilia y caracterizada por remodelación articular, dolor crónico y disminución de la calidad de vida. La fisioterapia es fundamental para su tratamiento, sin embargo, como la hemofilia es una patología rara, no hay muchos fisioterapeutas con experiencia en este campo y las terapias son escasas. En los últimos años los estudios proponen la terapia fascial para mejorar los síntomas de esta enfermedad. El objetivo de esta revisión es analizar la eficacia de la terapia fascial en pacientes con artropatía hemofílica. Se lleva cabo una revisión de la literatura utilizando bases de datos internacionales PubMed, Lilacs e IBECS, seleccionando los estudios clínicos realizados en los últimos cinco años y con alta calidad metodológica. Los resultados ponen de manifiesto que la terapia fascial mejora el dolor articular, el rango de movimiento, el estado de la articulación y la calidad de vida de pacientes con artropatía hemofílica.
A robust model for the term structure of interest rates: some applications in Colombia
Authors: Cabrera-Rodríguez Wilmar Alexander , Rodríguez-Novoa Daniela , Sánchez-Quinto Camilo Eduardo
Published: October 2023

This document presents a Gaussian Affine Term Structure Model (GATSM) of the zero-coupon public debt curve issued locally by the Colombian Government, adopting the methodological approach of Hamilton and Wu (2012) to solve the problems of identification and instability in the estimation of this family of models. Two empirical exercises are presented to highlight the relevance of this methodological approach. The first combines the GATSM structure with a Bayesian Averaging of Classical Estimates (BACE) approach to forecast the yield curve given a set of macroeconomic variables, thus offering a practical way to link a macroeconomic scenario to financial prices in a stress testing exercise. In particular, the document presents the connection with the Systemic Stress Model (SYSMO) of the Financial Stability Department of the Central Bank of Colombia. The second evaluates the effect of monetary policy surprises on sovereign bond yields on a comprehensive set of maturities in a parsimonious way allowed by the GATSM structure. We found an almost immediate, complete, and significant pass-through on the short end of the yield curve. These empirical applications reflect the flexibility of this approach as a tool to address studies that deepen the understanding of the dynamics of yield curves and macroeconomics, the valuation of financial instruments, and financial stability.
Disain & Simulasi Rangkaian Pentriger SCR Untuk Penyearah Terkendali Setengah Gelombang Tiga Fasa
Authors: Effendi  , Agil Haikal M.
Published: October 2023

One of the sub-subjects that studied in the power electronics course is the AC to DC converter in the form of a three-phase half-wave controlled rectifier where the output voltage can be controlled by adjusting the SCR gate trigger delay angle, in this research the author  design and simulates an SCR triggering circuit for three-phase half-wave controlled rectifier where the components that used among others a three-phase step down transformer where the output functions as a reference signal to determine the starting point (30o) and end point (150o) of the triggering delay angle, also used as a power source for the system, the Op-Amp functions as a comparator for a three-phase rectifier (Vd) with a DC voltage (Vreference), it also functions to compare a triangle wave with a DC voltage to control the delay angle or trigger angle (α) of the SCR. The trigger pulses that given to the SCR1, SCR2, and SCR3 are carried out simultaneously in the same time by using one pulse, the average output voltage resulting from the SCR trigger circuit design in this research is relatively the same as the value obtained using mathematically calculations where the load used in form of resistive
Accelerating the nonlinear analysis of hyper-elastic behavior by GMDH-assisted Newton-Raphson scheme
Authors:   Duy Tan Research Institute for Computational Engineering (DTRICE) – Duy Tan University, 6 Tran Nhat Duat, District 1, Ho Chi Minh city, Vietnam, Nguyen Minh Ngoc ,   Faculty of Civil Engineering, Duy Tan University, Da Nang, Vietnam
Published: October 2023

This paper presents an accelerated iterative scheme for nonlinear problems. Commonly, analysis of nonlinear behavior is conducted by the Newton-Raphson (NR) method. It is well-known that the number of iterations required depends on the deviation between the “starting point” and the converged solution. In practice, the solution of previous load step is taken as the “starting point”, while the converged solution of the current load step is not known beforehand. Therefore, difficulties or even non-convergence may occur. Recently, it is suggested that a neural network is employed to predict the solution of the current load step. This prediction is then used as the “starting point” for NR scheme. It is expected, that the true converged solution (of current step) is closer to the prediction by neural network than to the solution of previous load step. As a result, the scheme becomes faster due to less iterations. Obviously, any techniques for time-series forecasting can be used. Here, the Group Method of Data Handling (GMDH) is proposed. Loosely speaking, GMDH is a feedforward neural network without backpropagation. Practically, the GMDH-assisted NR scheme should not take longer time than conventional NR scheme. The advantage of GMDH is fast computation; however, the accuracy may be not as high as a network that has backpropagation. Therefore, careful consideration on the construction of GMDH network is needed. In the current work, the performance of GMDH-assisted NR scheme is investigated in analysis of hyper-elastic behavior, which involves both geometrical and material nonlinearity. A study on the influence of activation function on the accuracy is presented. Also, it is found that prediction for incremental displacement (between the current load step and the previous load step) could be better than prediction of displacement of the current load step.
Proposing an online education competence framework for Vietnam National University – Ho Chi Minh City lecturers
Authors:   Learning Sciences and Communication Laboratory (LISEC - EA 2310), University of Strasbourg, France, Nguyen Dai Tan , Nguyen Hao Thi ,   University of Social Sciences & Humanities, VNU-HCM, Vietnam
Published: October 2023

As long as the history of education, human always use the most developed technologies in the society for helping to resolve the difficulties in teaching, learning and evaluation, especially to develop the distance education. Since the late 1990s, has arrived the 5th generation of distance education on the base of Internet and World Wide Web technologies. In the new context, higher education institutions' lecturuers must be more competent in terms of instructional methods using digital technologies and tools, to promote the learners' ability of self-directed, active and interactive learning, helping them to develop transversal competencies such as problem solving, collaborative work, innovation, etc. For enhancing teachers' online education competencies, there has to be comprehensive standards or frameworks to clearly define the target competencies and to build a full continuous professional development program for the whole institution's staff, adequate to the requirements of the actual digital era. This article aims to propose an online education competence framework for Vietnam National University – Ho Chi Minh City lecturers based on synthesis of digital frameworks of other countries.
Value chain approach to develop craft village tourism – case study of Que Son cassava noodle, Quang Nam province
Authors:   University of Social Sciences & Humanities, VNU-HCM, Vietnam, Ngô Loan Thanh , Lê Nghĩa Hữu ,   University of Economics Ho Chi Minh city
Published: October 2023

In recent years, craft villages are one of the attractive cultural resources to be exploited for tourism activities. Many localities have taken advantage of this resource to develop tourism in order to enhance people's livelihood. This paper opts for cassava noodle artisanal production in Que Son district, Quang Nam province, as a case study. Que Son's cassava noodle traditional village was established quite a long time ago; however, this special resource has not been yet effectively exploited to create tourism products. Using the value chain analysis method, the authors aim to study how stakeholders involve in tourism activities' implementation and operation. The value chain approach will contribute to both sectors, agriculture and tourism. In addition, the authors also use an in-depth interview method with the local government and enterprises to collect opinions about a model to develop craft village tourism. The findings show the potential for cassava noodle village to become a touristic site by linking stakeholders, under the coordination of Caromi – a cassava noodle factory. This paper also proposes the value chain framework to indicate the stakeholders' role and benefits when participating in craft village tourism.
The Journey of River (Nguyen Ngoc Tu) from Perspectives of Ecocriticism
Authors:   Duy Tan University, Vietnam, Tran Nguyet Thi Anh
Published: October 2023

According to Cheryll Glotfelty, simply put, ecocritisim is the study of the relationship between literature and the physical environment. Ecocritisim argue the ecological theory of human sciences, which take the "anthropocentrism". It takes an "earth-centrered'' approach to literary studies. This article, we want to "read" River Nguyen Ngoc Tu from the core ideas of ecocritism. By demythologizing the adventure, traveling on the Di river is a journey to realize the loss of nature, to realize the barrenness. On the journey to explore the Di river, the character recognizes the impact of climate change on the fate of the people who live there. Nguyen Ngoc Tu chose a gay character to tell about the trip on the Di river, she wrote the sadness of a world that could disappear. River creates a new sensation when Nguyen Ngoc Tu wrote about the Southern space: a highly controversial view of anti-romanticism, ecotourism, and de-mythology. Author has posed a direct way of environmental issues and the life of man in the age of environmental crisis.
Cultural tourism villages: the strategy for the rural tourism development associated with the new rural construction
Authors:   University of Social Sciences & Humanities, VNU-HCM, Vietnam, Ngo Thi Thu Trang
Published: October 2023

Along with the development of the rural tourism, cultural tourism villages have developed in a number of countries around the world. In Vietnam, cultural villages are known after implementing the "One Commune One Product" (OCOP) program, which focuses on piloting the ten models of cultural tourism villages associated with the national target program of building the new rural construction (NRC). The model of the cultural tourism village is an expression of the specifications of local tourism products on the basis of promoting the internal values of each region and creating an income increase for rural areas in order to fulfill the income criteria, which are hard to achieve in the process of the new rural construction. Cultural tourism village is the convergence of cultural values, landscapes, customs and products of the typical region. By taking a practical approach in supporting the development of cultural tourism village projects in some localities such as Ben Tre, Dong Thap, and Ca Mau, the author presents the viewpoints and orientations in the development of cultural tourism villages in Vietnam, thereby contributing a scientific basis to proposing solutions to develop the rural tourism in association with the new rural construction.
Conceptions of the digital scholarship of the university community at the Vietnam National University Ho Chi Minh City
Authors:   University of Social Sciences & Humanities, VNU-HCM, Vietnam, Ninh Thoa Thi Kim , Nguyễn Sinh Hồng ,   University of Social Sciences and Humanities, Vietnam National University Ho Chi Minh City, Ngô Huyền Thị ,   University of Social Sciences and Humanities, Vietnam National University Ho Chi Minh City
Published: October 2023

Developing the digital scholarship, particularly the application of digital technologies to academic activities, has become a common trend at universities around the world. Universities in Vietnam are no exception to that trend. The results of the study presented in the paper are part of a larger research project conducted to propose a model of digital scholarship services for the Vietnam National University Ho Chi Minh City. This paper mainly focuses on the research results related to the conception of the university community at the Vietnam National University Ho Chi Minh City towards the concept of the digital scholarship. To achieve the goal, the study employed in-depth interviews to collect data from a sample of 31 purposely selected individuals, including university administrators, library managers, lecturers, graduate and undergraduate students, from the six member universities of the Vietnam National University Ho Chi Minh City and the Central Library. The research results show that there are three main points of view regarding the concept of the digital scholarship within the University Ho Chi Minh City's university community: (1) The digital scholarship is the application of technologies to all academic activities; (2) The digital scholarship is the application of technologies to a type of academic activities, such as teaching and learning, or the provision and use of digital materials; (3) The digital scholarship is the application of technologies in the management of universities' academic activities. The research results also indicate that there is still part of the university community, which has been unaware of or unfamiliar with the concept of the digital scholarship.
The lecturers’ belief on ethical standards of Vietnam National University Ho Chi Minh City
Authors:   University of Social Sciences and Humanities, VNU-HCM, Vietnam, Le Phuoc Huu , Truong Truong Hoang ,   University of Social Sciences and Humanities, VNU-HCM, Vietnam, Truong Thao Thanh ,   University of Social Sciences and Humanities, VNU-HCM, Vietnam, Le Hung Khanh ,   University of Social Sciences and Humanities, VNU-HCM, Vietnam
Published: October 2023

Ethical standard of lecturers is very important issue in teaching and training process of any country. In Vietnam, in the context of fundamental and comprehensive reform of education and training, this issue has attracted more attention from both the political system and the whole society. In order to establish the ethical standards of the teaching staff in the Vietnam National University, Ho Chi Minh City (VNU-HCM), on the basis of literature review and questionnaire survey, the article focuses on the belief analysis of undergraduate lecturers, including three makeup elements of ethical standard: (1) Political qualities and civic responsibility, (2) Professional ethics, (3) Lifestyle. The results show that the scale of criteria for each group has high reliability and the lecturers of VNU-HCM highly appreciate the importance of these criteria. However, perceptions and attitudes in recognizing these criteria also depend on some factors, in which gender, age and expertise are the three factors that create significant differences in the lecturers’ belief of ethical criteria. The data of the article will provide a scientific and practical basis for the development of a set of ethics guidelines and a code of conduct for the VNU-HCM teaching staff. It is also an essential reference resource for the Vietnamese higher education system in general.
Allocating the transferable skills in the training program matrix
Authors:   University of Social Sciences and Humanities, VNU-HCM, Vietnam, Cao Thi Chau Thuy
Published: October 2023

Bachelors not only can achieve their learning outcomes in the domains of knowledge, skills, and professional competencies, but also have to demonstrate transferable skills. Transferable skills are recognized as a great contributing factor to the success of each individual in work and life. Learners at the bachelor's level are trained to develop a number of the transferable skills to meet the requirements of society such as communication skills, teamwork skills, problem solving skills, critical skills, etc. These skills are often integrated into teaching professional subjects and educational activities. Therefore, determining the learning outcomes of the transferable skills and the matrix represents the contributions of subjects to the implementation of the learning outcomes – the training program matrix has a guiding role for teaching, learning, and assessing activities. The discussions were set up for determining the learning outcomes of the transferable skills and allocating the subjects to implement those skills, from the current situation of the 12 training programs in the fields of social sciences and humanities at the University of Social Sciences and Humanities, Vietnam National University Ho Chi Minh City. The limitations identified from the discussions indicate that there needs to be improvements in determining the learning outcomes and building the matrix for the transferable skills. On that basis, the recommendations for stakeholders are also proposed in the article.
Specificity, Authenticity, and Inseparability: Assessing Integrated Oral Skills for Pilots and Air Traffic Controllers
Authors:   Iowa State University, Douglas Dan
Published: October 2023

Because the stakes are so high when assessing the oral language skills of pilots and air traffic controllers, they deserve to be tested in the use of the most specific language features of aviation English and in the most authentic context of their professions. In this talk I will discuss the problem of defining language specificity for professional purposes, the problem of reproducing authentic contexts in assessments, and the problem of the inseparability of language knowledge and professional background knowledge. In terms of specificity, I will talk about “Codes of Relevance,” which relate language use to specific professional contexts. The notion of authenticity is paramount since, unless pilot and ATC test takers can relate to the professional context in a realistic manner, then the judgments we make concerning their language abilities may not be valid. Finally, I will discuss the consequences of the notion that language knowledge and professional background knowledge are theoretically and practically inseparable.
Effects of Inspections Done by Capital Market Board on Share Returns (2000-2018 Period Analysis)
Authors: Somuncu Kartal , Çetinkaya İsmail
Published: October 2023

Because of the realization of the fact that manipulations were being done on financial reports of the biggest countries both in the US and in the rest of the world such as Long Term Capital Management in 1998, Enron in 2001, and Lehman Brothers in 2008, the importance of independent auditing and corporate governance understanding increased. 99.9% of businesses operating in our country are in small and mid-scale business status. This fact makes the adoption of independent auditing and corporate governance understanding harder. Therefore, the prevention the use of methods that blocks competition in the market, Capital Markets Board was founded. The purpose of this study is to find out the effects of auditings done by CMB from 2000 to 2018 on stock returns. Another result of this research is to find out whether BIST is strong in semi-strong form or not. Data on auditing done by CMB was acquired from CMB’s weekly bulletins. As a result of the analysis made using the event study method, it has been concluded that it affects the stock returns negatively. In addition, it is also possible to obtain higher returns compared to the BIST-100 index returns using this information and therefore, BIST was not effective in semi-strong form.
PROTOTYPE TELEDISPLAY BERBASIS SHORT MESSAGE SERVICE (SMS) SINGKAT BERCATUDAYA LISTRIK TENAGA SURYA
Authors: Sudradjat Iwa , Nixon Benny , Supriyanto Toto
Published: October 2023

This study aims to apply the Short Message Service (SMS) technology and solar power for a teledisplay. This system is useful to display some of the information specified in those places as appropriate wirelessly. Teledisplay is capable of displaying information on a Light Emmisi Diode (LED) matrix display with a length of information that can be displayed as 8 characters. Methods of delivery of information using SMS-Global System Mobile (GSM) with supplied by solar power. In this way the system can be placed anywhere because it does not depend on resources Statics Electrical.

The device comes with adjustment system which allows you to adjust the intensity of the light intensity generated by the LED display will be adjusted so that the flame with environmental light conditions. The system is controlled by the two processors, the first processor set acceptance of information sent from the mobile phone and displays the information to display. The second processor is used to control the intensity level of Solar Cell and display.

System built capable of displaying information transmitted via GSM cell phone with the power supply is obtained from a 30 watt solar cell and battery with a capacity of 45 ampere hours. Such systems are able to operate for three days while the weather was overcast.

Keywords: Prototype, Teledisplay, Short Message Service (SMS), Solar cell.

ABSTRAK

Penelitian ini bertujuan menerapkan teknologi SMS dan listrik tenaga surya untuk sebuah teledisplay. Sistem ini berguna untuk menampilkan beberapa informasi ditempat-tempat tertentu sesuai keperluannya secara nirkabel. Teledisplay yang dimaksud berkemampuan menampilkan informasi pada display LED matrik dengan panjang informasi yang dapat ditampilkan sebanyak 8 karakter.

Metode penyampaian informasinya menggunakan sistem SMS-GSM dan kebutuhan dayanya dicatu dengan pembangkit listrik tenaga surya. Dengan cara seperti ini sistem dapat ditempatkan dimana saja karena tidak tergantung dengan jarak atau sumber daya PLN. Perangkat ini dilengkapi dengan sistem penyesuai intensitas yang berguna untuk mengatur intensitas cahaya yang dibangkitkan oleh LED sehingga nyala display akan disesuaikan dengan kondisi cahaya lingkungannya. Sistem ini diatur oleh dua prosesor. Prosesor pertama mengatur penerimaan informasi yang dikirim dari handphone dan menampilkan informasi tersebut ke display. Prosesor kedua digunakan untuk mengontrol PLTS dan tingkat intensitas display.

Sistem yang dibangun mampu menampilkan informasi yang dikirimkan melalui HP-GSM dengan catu daya diperoleh dari solar cell sebesar 30 watt dan baterai berkapasitas 45 amper jam. Sistem seperti ini mampu beroperasi selama 3 hari walaupun cuaca mendung.

Kata Kunci: Prototype, Teledisplay, Short Message Service (SMS), Solar cell.
PEMODELAN PENYEMPITAN CELAH PITA ENERGI SEBAGAI FUNGSI KONSENTRASI DOPING PADA HBT SIGE
Authors: Julian Engelin Shintadewi
Published: October 2023

Smaller bandgap material in the base of SiGe HBT is obtained by using high doping concentration and Germanium addition into the base of silicon bipolar transistor. In this work, a simple natural logarithm model bandgap narrowing due heavy doping in the base of SiGe HBT is proposed. The model is developed using least square method for the data collected by Hueting. This simple formulation is very useful to derive an analytical model of SiGe HBT. To test the validity of our model, we compare our model with other models used by Hueting and Sze as well as experimental data that have already been published. The result shows that our model of bandgap narrowing is in good agreement with the experimental data.

Keywords: Modeling, bandgap energy, doping concentration, HBT SiGe.

ABSTRAK

Basis HBT SiGe dibuat dari campuran bahan Silikon dan Germanium yang mempunyai celah pita energi lebih sempit dari celah pita energi bahan Silikon. Penyempitan celah pita energi ini selain terjadi karena penambahan bahan Germanium, juga terjadi karena penggunaan konsentrasi doping yang tinggi pada basis. Pada makalah ini dibahas pengembangan model penyempitan celah pita energi yang disebabkan oleh konsentrasi doping pada basis HBT SiGe dengan menggunakan metode kuadrat terkecil. Model dibuat dalam bentuk logaritma natural sederhana sehingga memudahkan dalam perhitungan kinerja HBT SiGe yang berbentuk pangkat eksponensial penyempitan celah pita energi. Model yang dibuat dibandingkan dengan model-model lain yang digunakan oleh Hueting dan Sze. Hasilnya menunjukkan bahwa model penyempitan bandgap yang dibuat dapat merepresentasikan data eksperimen lebih baik dibandingkan dengan model lainnya.

Kata kunci: Pemodelan, Celah Pita Energi, Konsentrasi Doping, HBT SiGe
RANCANG BANGUN DAN PENGUJIAN DEVAIS PERIPHERAL INPUT/OUTPUT (P I/O) BERBASIS UNIVERSAL SERIAL BUS (USB)
Authors: Pracoyo Agus , Alamsyah Tossin
Published: October 2023

Almost all modern computers provide a USB port (Universal Serial Bus) for access to the device input / output external. This phenomenon has forced the designers and developers full-custom devices, input / output is always based on the USB interface technique. A USB system consists of a controller (host PC) and several Device input / output This research aims to design devices, input / output USB HID class (Human Interface Decive). Design based on the USB protocol version 1.1 and 2.0 as the software on the Device (firmware) and the host, as a controller selected PIC18F4550 microcontroller. The design of devices, input / output USB with analog and digital terminals that can diakes and controlled by the host Testing is done using software USBTrace. The test results showed that the speed of transactions is achieved is 12 Mbps (full-speed) with 48 MHz MCU clock

Key words: Design, Testing, Peripheral Input Output (PI/O) , Universal Serial Bus (USB)

ABSTRAK

Teknologi Personal Computer (PC) telah menyediakan terminal USB (Universal Serial Bus) untuk keperluan akses dari dan ke devais input/output eksternal. Fenomena ini memaksa para perancang dan pengembang full-custom untuk merancang devais input/output berbasis antar muka USB. Sistem USB terdiri dari pengontrol yaitu PC sebagai host dan beberapa devais input/output (I/O) sebagai client.

Pada artikel ini dibahas hasil rancangan dan pengujian devais input/output Human Interface Decive USB dengan Microcontroller PIC18F4550. Pengujian menggunakan software Tools USBTrace yang dikembangkan oleh SysNucleus. Hasil pengujian menunjukkan bahwa kecepatan transaksi dapat mencapai 12 Mbps, merupakan kategori full-speed. Kecepatan Transaksi dicapai berdasarkan pada Compiler MikroC, dengan clock pada MCU 48 Mhz dan xtal terpasang 8 Mhz.

Kata Kunci: Rancang bangun, Pengujian, Peripheral Input Output (PI/O) , Universal Serial Bus (USB)
ANALISIS PENGARUH MISALIGNMENT TERHADAP VIBRASI DAN KINERJA MOTOR INDUKSI
Authors: Ulfiana Andi
Published: October 2023

Vibration caused by misalignment of induction motor is detected by using Micro-Electro-Mechanical System (MEMS) and piezoelectric sensor. Measurement is done with alignment and misalignment. Vibration signal is presented by using LabVIEW trhough Data Aquisition (DAQ) Card and by monitoring variable of, voltage, current, electric power and motor speed. Vibration analysis is done by perceiving frequency and amplitude of signal with alignment and misalignment. Vibration analysis is done by using Fast Fourier Transform (FFT) and Wavelet Transform (WT). Calculation of energy consumption is done with alignment and misalignment.

Keywords : misalignment, vibration, induction motor, MEMS, piezoelectric, LabVIEW, Fast Fourier Transform, Wavelet

Transform.

ABSTRAK

Vibrasi akibat misalignment pada motor induksi dideteksi menggunakan sensor Micro-Electro-Mechanical System (MEMS) dan piezoelektrik. Pengukuran dilakukan saat kondisi alignment dan misalignment. Sinyal vibrasi ditampilkan menggunakan LabVIEW melalui Data Aquisition (DAQ) Card. Dilakukan pengamatan tegangan, arus, daya listrik dan putaran motor. Analisis vibrasi dilakukan dengan mengamati amplitudo dan frekwensi sinyal untuk kondisi alignment dan misalignment. Analisis vibrasi dilakukan menggunakan Fast Fourier Transform (FFT), Short Time Fourier Transform (STFT) dan Wavelet Transform (WT). Dilakukan perbandingan konsumsi energi saat alignment dan misalignment.

Kata Kunci: misalignment, vibrasi, motor induksi, MEMS, piezoelektrik, LabVIEW, Fast Fourier Transform, Short Time Fourier Transform, Wavelet Transform.
ANALISA PENURUNAN PERFORMA DESALINATION PLANT UNIT B DAN C PADA PLTGU SEMARANG
Authors: Hayatun Nufus Tatun , Fuadi Hasan , Setiawan Hari
Published: October 2023

Desalination Plant form equipment to used for water purifier, This research work is to study the process of water purifying and analyze performance of the desalination plant of PLTGU Semarang with compare with the factory design. Normally, this desalination plant’s main function is to supply raw water and service water, that used to power plant activities.

Data removal operating parameters influential toward unit performance analysis important activity. Data processing talked about give image and reference about the two of them unit desalination plant performance with the factory design until difference of performance ascertainable and variance parameters to influence as form creative problem solving.

From this study, it was found that the desalination plant performance at unit 2 is 67,17% and unit 3 is 58,29% in PLGU Semarang, lower than standart at factory design. Difference of performance is caused by some factor. It is recommended continous maintenance to vital equipments is a solution to increase the system performs.

Keywords : Desalination Plant, Parameters, Performance.

ABSTRAK

Desalinasi Tanaman peralatan formulir untuk digunakan untuk penjernih air, Karya Penelitian adalah untuk mempelajari proses pemurnian air dan menganalisis kinerja pabrik desalinasi Semarang PLTGU dengan membandingkan dengan desain pabrik. Biasanya, fungsi utama tanaman ini desalinasi adalah untuk memasok air baku dan pelayanan air, yang digunakan untuk kegiatan pembangkit listrik.

Data parameter operasi yang berpengaruh terhadap aktivitas unit analisis kinerja yang penting penghapusan. Pengolahan data berbicara tentang memberikan gambar dan referensi tentang kinerja pabrik desalinasi dua di antaranya unit dengan desain pabrik sampai perbedaan parameter kinerja dapat diketahui dan varians untuk mempengaruhi sebagai bentuk pemecahan masalah secara kreatif.

Dari penelitian ini, ditemukan bahwa tanaman desalinasi kinerja di unit 2 adalah 67,17% dan unit 3 adalah 58,29% di Semarang PLGU, lebih rendah dari standar di desain pabrik. Perbedaan kinerja ini disebabkan oleh beberapa faktor. Disarankan pemeliharaan berkesinambungan untuk peralatan penting adalah solusi untuk meningkatkan sistem melakukan.

Kata Kunci: Desalinasi Tanaman, Parameter, Kinerja.
PEMANFAATAN SAMPAH DAUN SEBAGAI BAHAN CAMPURAN PAPAN PANEL SEMEN DENGAN BAHAN IKAT MU PLESTERAN
Authors: Susilowati Anni
Published: October 2023

This research was conducted on cement board panel using Glodogan leaves, that were already cut into pieces with a length of 5-20 mm and a width of 3-10 mm. Then, they were soaked in cold water for 24 hours than dried in room temperature for a day. Various compositions used for the mixture of instant cement volume MU-301 and leaf waste were 1: 0, 1: 0.2, 1: 0.4, 1: 0.6, 1: 0.8, and 1: 1.0 with a water mixture ratio of 0.15. The process of making the mixture was done by using a vibrating table of 30-60 seconds and then carried out hydraulic compression with a load of 3 kg/cm ². The result indicates that more leaf waste in cement board panel leads to an increased water seepage, water absorption, moisture content and thickness swelling. Moreover, increasing the addition of leaf waste can also reduce the density, specific gravity, flexural strength, compressive strength and tensile strength. The result also indicates that the lowest the highest flexural strength of 2.90 MPa does not meet the minimum requirement of 10 MPa (SNI 15-0233-1989), which was resulted from the mixture with the composition of leaf waste 0.2. This was the most possible mixture to be developed.

Keywords: Leaves waste, cement board panel, flexural strength, water absorption, and water seepage.

Abstrak.

Penelitian dilakukan pada papan panel semen dengan menggunakan daun Glodogan dipotong-potong ukuran panjang 5 - 20 mm dan lebar 3 - 10 mm kemudian direndam dalam air dingin selama 24 jam dan dikeringkan. Komposisi campuran yang digunakan berdasarkan perbandingan volume campuran semen instan MU-301 : SD adalah 1 : 0; 1 : 0,2; 1 : 0,4; 1 : 0,6 ; 1 : 0,8; 1 : 1,0 dengan faktor air campuran (f.a.c.) 0,15. Proses pembuatan dilakukan dengan penggetaran menggunakan vibrating table selama 30 - 60 detik kemudian dilakukan pengempaan hidraulis dengan beban sebesar 3 kg/cm². Hasil analisis menunjukkan semakin banyak sampah daun pada papan panel semen mengakibatkan peningkatan rembesan air, daya serap air, kadar air dan pengembangan tebal. Selain meningkatkan penambahan sampah daun juga dapat menurunkan densitas, berat jenis, kuat lentur, kuat tekan dan kuat tarik. Hasil penelitian kuat lentur tertinggi sebesar 2,90 MPa tidak memenuhi persyaratan minimum 10 MPa (SNI 15-0233-1989), yang dihasilkan oleh campuran dengan komposisi variasi 0,2 SD. Campuran ini merupakan campuran yang paling memungkinkan untuk dikembanngkan.

Kata kunci : Sampah daun, papan panel semen, kuat lentur, daya serap air, rembesan air
PEMBANDINGAN KEKUATAN TARIK TULANGAN DENGAN MENGGUNAKAN ALAT BRINEL DAN MENGGUNAKAN UTM (UNIVERSAL TEST MACHINE)
Authors: Rinawati Rinawati , Priansyah Fiki , Bachtiar Indra
Published: October 2023

Brinnel portable equipment is the most practical tool used in the field to determine the tensile strength of reinforcement. Basically brinnel validity of the tool is still very doubtful, as well as tools that existed at the Laboratory brinnel State Polytechnic of Jakarta. Based on these problems, research needs to determine the validity of the tool. The research was conducted by comparing the tensile strength test results between testing with tools brinnel and with UTM (Universal Test Machine). This test uses a test specimen plain rebars of 8 mm and 10 mm and 10 mm threaded bars, 13 mm and 16 mm. The length of the test object for testing using the UTM is 300 mm while for testing using a tool which is 700 mm brinel. From the test results comparing the data obtained between the tensile strength testing using the UTM and testing using tools brinnel. From testing the difference of tensile strength test results are quite significant. Testing with tools brinnel have lower results than testing with UTM with a difference of about 30%.

Keywords: tensile strength, brinnel tools, Universal Test Machine
Pengendalian Gerak Longitudinal Pesawat Terbang dengan Metode Decoupling
Authors: Sukandi Agus
Published: October 2023

Aircraft is mode air transportation faster movement. For designing model an aircraft need sufficient knowledge field of controls such as kinematic, dynamics and stability to fulfill requirement as needed.

Aircraft motions system are MIMO (Multi Input Multi Output) system, where each input to influence (interaction) to all output, so very complex to analysis. Application of decoupling method for Aircraft motion MIMO system will be eliminate interaction input-output, so each output are influenced by eachinput only.

Result of computation using CHARLIE aircraft data [2] are before using controller, aircraft

has unstable characteristics, because it has two positive eigen value i.e. 3,4   0.0006  0.0512i . Aircraft still both controllable and observable, because has full rank controllability and observability matrix i.e. 4. After using decoupling method controller, motion of aircraft is very stable, both output, vertical velocity w and angular speed q match set-point. Vertical velocity w followed set-point after 12 second, and angular speed q followed set-point after 14 second.

Key words : Longitudinal, decoupling, and stability.

Abstrak

Pesawat terbang merupakan wahana udara yang dirancang untuk memenuhi kebutuhan manusia akan transportasi yang lebih cepat. Dalam merancang pesawat terbang yang perlu diperhatikan adalah memodelkan dan mengendalikan gerakan pesawat sehingga pesawat mampu bermanouver sesuai dengan yang diinginkan. Sistem gerak pesawat merupakan sistem MIMO (Multi Input Multi Output), di mana masing-masing input saling mempengaruhi (berinteraksi) terhadap semua output sehingga relatif kompleks untuk dianalisa. Penerapan metode decoupling pada sistem MIMO gerak pesawat akan menghilangkan pengaruh interaksi tersebut, sehingga masing-masing output hanya dipengaruhi oleh masing-masing input.

Hasil perhitungan dari data pesawat CHARLIE [2] menunjukkan (sebelum adanya pengendali), gerak esawat mempunyai karakteristik tidak stabil, karena ada nilai eigen yang positif yaitu  3,4=0.00060.0512i. Tetapi gerak pesawat masih dapat dikontrol (controllability) dan dapat diamati (observability) secara lengkap, karena matriks controllability dan matriks observability mempunyai full rank yaitu 4. Kemudian, setelah menggunakan pengendali dengan metoda decoupling gerakan pesawat sangat setabil, karena output w dapat mengikuti set-point setelah sekitar 12 detik, dan output q dapat

mengikuti set-point setelah sekitar 14 detik.

Kata Kunci: Longitudinal, decoupling, dan stabilitas
Simulasi Aliran Lewat Aerofoil Dengan “Slotted Flap” Menggunakan Metode Vorteks
Authors: R Gunadi Gun Gun
Published: October 2023

As a pre analysis, numerical simulation at airfoil more cheaper and efficient compared to experiment, because flowfield and geometrical conditions can be managed easily to get the results. Elliptic grid generation transform the physical domain to computational domain. Flowfield equations transformed to computational domain too. Vortex methods with line Gauss-Siedel and ADI iteration used to get flowfiled equations. Airfoil assumed infinite to breaks problem from three dimensional to two-dimensional flow. This numerical simulation research verify by experiments result to get accuration, so it can get as a pre analyze in research. The vortex method examines flowfield of the NACA four-digit airfoil, adding the flap variations. Results from this study suggest that at low Re this simulations have good accuration. Lift coefficient of plain-flap bigger 20.4% compared to without flap or with flaperon, followed by increase of lift coefficient along increasing angle of attack till 13,4% at angle of attack 18o. Flaperon have facility of control because angle of flap do not influence characteristic of wing.

(Keyword: physical domain, transformed, computational domain)

Abstrak

Sebagai analisa awal, simulasi numerik pada aerofoil punya keuntungan lebih dalam menghemat waktu dan biaya dibanding dengan menggunakan eksperimen langsung. Variasi kondisi aliran dan geometri dapat diatur dengan mudah untuk mendapatkan hasil yang diingikan. Titik grid dihasilkan dengan pembangkitan grid eliptik, dalam hal ini grid ranah fisis ditransformasikan menjadi grid ranah komputasi. Demikian pula persamaan aliran ditransformasikan menjadi ranah komputasi. Metode vorteks dengan diskritasi Line Gauss-Siedel dan ADI digunakan untuk menyelesaikan persamaan aliran. Untuk menyederhanakan persoalan dari tiga dimensi menjadi dua dimensi, aerofoil dianggap memiliki panjang tak hingga. Penelitian dilakukan dengan membandingkan hasil simulasi dengan hasil pengujian untuk mengetahui akurasi simulasi, hingga dapat digunakan sebagai analisa awal dalam sebuah penelitian. Metode vorteks diharapkan mampu menyelesaikan permasalahan aliran disekitar aerofoil NACA 4-digit, serta dengan penambahan variasi flap di bagian belakang aerofoil, dengan akurasi yang baik. Hasil simulasi menunjukan pada Re rendah simulasi memiliki akurasi yang baik. Penambahan flap pada aerofoil menunjukan koefisien gaya angkat plain flap lebih besar 20,4% dibanding tanpa flap atau dengan flaperon, diikuti kenaikan koeffisien gaya seret seiring bertambahnya sudut serang hingga 13,4% pada sudut serang 18o. Flaperon memiliki keleluasaan kontrol karena sudut flap tidak mempengaruhi karakteristik airfoil sayap.

(kata kunci: ranah fisis, transformasi, ranah komputasi)
USE OF DERIVATIVES AS A RISK MANAGEMENT TOOL IN A GLOBALIZED WORLD
Authors:   State Tax University, Ananieva Yuliia
Published: October 2023

The article examines the role of derivatives in today’s globalized world as a key tool for managing various risks. The authors consider in detail the main characteristics of derivatives, their advantages for investors and potential risks. Particular attention is paid to the impact of derivatives on portfolio diversification, market liquidity and asset pricing. The article also emphasizes the importance of regulating the derivatives market to ensure its stability and protect investors. The need for a deep understanding of derivatives and a strategic approach to their use in the conditions of constant evolution of global financial markets is emphasized. Practical aspects of the use of derivatives in various economic situations are considered, including speculation, arbitrage and portfolio diversification strategies. The authors analyze how derivatives can be used to maximize profits, reduce potential losses and optimize capital investments. Potential dangers and challenges associated with improper use of derivatives are identified, as well as recommendations for their effective use. Special emphasis is placed on the need for constant enlightenment and training for financial professionals so that they can adequately respond to market changes and use derivatives in accordance with their investment goals. Despite their complexity and potential risks, derivatives remain one of the most powerful tools in the hands of financial professionals that, when used correctly, can bring significant benefits to both individual investors and the global economic environment. An important aspect that is also considered is ethical issues and social responsibility in the context of the use of derivatives. Given the potential impact of derivatives on the global economy, it is important to understand their impact on social stability and well-being. The conclusion emphasizes that although derivatives are a powerful tool, they require a responsible approach and deep understanding. Investors, traders and financial institutions should be alert, educated and ready to adapt quickly to changes in this dynamic financial sector.