bluuebunny/crossref_metadata_2025 huggingface dataset:
The Blood Hemoglobin Sensor Based On (Ba,Sr)TiO3 Films: The Performance Evaluation and Data Analysis
Authors: Vania Rahmawaty  , Irzaman  , Tony Sumaryada
Published: December 2023

The information of blood hemoglobin level is very important for human health. Normal hemoglobin levels for men are in the range of 14-18.5 g/dL, and for women in the range of 12-16.5 g/dL. A hemoglobin level below the normal range indicates an anemia problem which could be fatal for human’s health. To detect the blood hemoglobin level, optical sensors must respond to the light within the range of 250-900 nm wavelength. In this paper we report the performance of Barium Titanate and Strontium Titanate (Ba,Sr)TiO3 films which are capable of detecting the blood hemoglobin level  in the spectrum range of 380-780 nm. The performance of (Ba,Sr)TiO3 then compared with FDS100 standard sensor. The LED in this study, as a light source, has a wavelength of 545 nm and 570 nm. The (Ba,Sr)TiO3 film, LED and artificial blood samples were placed in a container and integrated with other electronic devices. The hemoglobin (Ba,Sr)TiO3 measurement data obtained was then processed using a machine learning method (linear regresion algorithm) and compared with the actual hemoglobin value from artificial blood. The evaluation of data measurement using linear regresion showed that BaTiO3 has more accuracy (84.83%) as compared to SrTiO3 (82.95%). This result is in accordance with the result from the optical and electrical properties, where a small band gap energy and a small resistance produce better optical and electrical properties resulting in a higher level of accuracy.
AuNPs/GO Coated U-Shape Polished SMF Based Localized SPR Sensor for Musta’mal Water Identification
Authors: Ahmad Khirri Nur Zahirah , Mukhtar Wan Maisarah , Mohd Halim Razman , Abdul Rashid Affa Rozana , Mohd Taib Nur Athirah
Published: December 2023

Potential of hybrid gold nanoparticles/graphene oxide (AuNPs/GO) coated single mode fiber (SMF) sensor by exploiting localized surface plasmon resonance (LSPR) effect for Musta’mal water identification was studied. Three structure shapes of fiber optics such as straight-shape, loop-shape and u-shape had been prepared. Three layers of AuNPs with 50 nm in diameter were drop-casted onto the partially unclad polished single mode fiber (SMF) to observe the maximum sensitivity of LSPR. To enhance the LSPR effect, one layer of GO was deposited on top of the AuNPs layer. Two optical light sources with least attenuation (1310 nm and 1550 nm) were employed to study the optical power output as the sensor immersed in different type of water samples. The u-shape SMF portrayed the maximum output power about 24.2 dBm at 1550 nm wavelength. According to the analysis, the deployment of 1550 nm laser wavelength resulted in better sensitivity with 23.2% improvement compared to 1310 nm wavelength. Apparently, the LSPR phenomenon created by AuNPs/GO able to enhance the plasmonic signal up to 51.9% than the uncoated SMF. The thinnest diameter of SMF’s cladding, d=0.1195 mm with U-shape structure exhibited the highest power different of 1.10 dBm, in which suggested the best sensing performance. In conclusion, the optimization of AuNPs/GO u-shape polished SMF resulted in the maximum sensitivity with value of S=72.7 dBm/RIU for Musta'mal water identification.
Thermal Analysis of LED Packaging with Single-Walled Carbon Nanotube Heat Sink
Authors: C. K. Keong  , N. A. M. Ahmad Hambali  , M. H. A. Wahid  , N. Ali  , H. Mohamad
Published: December 2023

The thermal issue is still the bottleneck of a light emitting diode (LED) system to sustain its operational performance. In this paper, we design, simulated, and analysed an LED packaging with single walled carbon nanotubes as a heat sink. The 5W LED packaging is simulated with different types of LED chips materials which comprise gallium nitride, indium nitride, zinc oxide, zinc selenide and titanium dioxide. Using LED chips materials as the heat source, the heat flow is conducted through the bottom layer to the heat sink and dissipates by convection or radiation heat transfer to the surrounding. The addition of thin film on top of the phosphorus layer functions to enhance the recombination rate and guided the flow of heat to the bottom. The 5W titanium dioxide light emitted diode packaging (LED packaging C) has been successfully demonstrated to have overall temperature reduced to around ~10°C by using single walled carbon nanotube heat sink as compared to copper heat sink and aluminium heat sink. Meanwhile, carbon material as thermal interface material and substrate also plays a major role as a thermal cooling solution in LED packaging. For 5W titanium dioxide light emitted diode packaging, under self-heating conditions, the maximum average temperature generated is 81.05 °C. Despite that, under convection conditions, the maximum average temperature generated is 41.53°C.
Analysis of Different Piezoelectric Materials on the Film Bulk Acoustic Wave Resonator
Authors: N. I .M. Nor  , N. Khalid  , H. Aris  , M. S. Mispan  , N. Aiman Syahmi
Published: December 2023

The performance of film bulk acoustic wave resonators (FBAR) is greatly dependent on the choice of piezoelectric materials. Different piezoelectric materials have distinct properties that can impact the performance of FBAR. Hence, this work presents the analysis of three different piezoelectric materials which are aluminum nitride (AlN), scandium aluminum nitride (ScAlN) and zinc oxide (ZnO) on the performance of FBARs working at resonance frequencies of   6 GHz until 10 GHz. The one-dimensional (1-D) modelling is implemented to characterize the effects of these materials on the quality (Q) factor, electromechanical coupling coefficient (k2eff) and bandwidth (BW). It is determined that employing ScAlN in FBAR results in the highest Q factor, ranges from 628 to 1047 while maintaining a relatively compact area (25 µm × 25 µm) and thickness (430 nm to 720 nm). However, ScAlN yields the narrowest BW, measuring 0.11 GHz at 6 GHz, as opposed to AlN and ZnO, which exhibit broader bandwidths of 0.16 GHz and 0.23 GHz, respectively.
Terahertz Imaging Using Nanorectifier-Based Detectors and Broadband Thermal Sources
Authors: Shahrir R. Kasjoo  , Arun K. Singh  , Claudio Balocco  , Aimin Song
Published: December 2023

Several terahertz imaging experiments have been conducted at room temperature using a self-switching diode (SSD) rectenna as a detector, and a broadband thermal source (at 610 °C) as a continuous-wave terahertz generator. Since the terahertz emission produced by the source is non-coherent with random polarizations and has a wide-ranging spectrum, the SSD-based rectenna employed in this work utilizes a planar spiral micro- antenna which has a circular polarization that able to effectively capture all incident radiation regardless of the angles. The antenna has been designed for a broadband frequency response in the range of 0.1-10 THz. This is to ensure the terahertz images produced are ascribed to the terahertz radiation collected by the antenna, but without eliminating the possibility of thermal effects at frequencies higher than the terahertz region. In order to further validate the results obtained, an Airy pattern experiment has been conducted. Based on this experiment, the effective frequency response of the SSD rectenna is estimated at 2.29 THz. The utilization of thermal source and micro-size rectenna in this work may pave the way to explore many opportunities in developing flexible, compact, and low-cost terahertz imaging systems without the use of expensive components (e.g., typically lasers are used as terahertz sources).
Numerical Simulation of Lead-Free Tin and Germanium Based All Perovskite Tandem Solar Cell
Authors: Rae-Ann Lim Jia En  , Ayu Wazira Azhari  , Dewi Suriyani Che Halin  , Suhaila Sepeai  , Norasikin Ahmad Ludin
Published: December 2023

The ability to customize the materials bandgaps makes perovskite solar cells a promising candidate for hybrid-tandem applications. This allows them to effectively utilize parts of the solar spectrum that silicon-based solar cells cannot efficiently capture, resulting in higher absorption coefficients. However, there is a lack of research on lead-free all-perovskite tandem solar cells, and secondary data on materials is limited. One of the main challenges in previous studies is the high cost and solid structure of traditional silicon-based solar cells, which require significant storage space. Additionally, lead-based perovskite solar cells pose environmental concerns due to their water solubility and potential harmful effects upon consumption. To address these issues, thin-film perovskite solar cells with liquid solvents are employed in the solar cell design. Lead is replaced with germanium and tin-based perovskites, which exhibit comparable photovoltaic performance to silicon. In the present work, the OghmaNano simulation tool was utilized to conduct numerical simulation of the perovskite design. The perovskite solar cell layers were structured as follows: FTO/ZnO/MAGeI3/Spiro-OMeTAD/FAMASnGeI3/Cu2O/Au. The variables considered included optimum layer thicknesses and bandgaps, as well as the most suitable materials for the ETL and HTL, aiming to obtain the highest efficiency. Based on the simulation results, the proposed perovskite structure shows remarkable photovoltaic parameters. The Voc was measured at 0.84 V Jsc of 16.1 mA/cm2, FF of 0.825, and PCE that reached 11.12%. This project contributes to future research on materials for the ETL and HTL of lead-free, tin and germanium based APTSCs.
Encouragement of Graphite and Graphene Oxide Particles on Corrosion Protection Properties for Polyurethane Palm Oil Based UV Curable Coating
Authors: Mohd Sofian Alias  , Norinsan Kamil Othman  , Siti Radiah Mohd Kamarudin  , Siti Fatahiyah Mohamad  , Mohd Hamzah Harun  , Mahathir Mohamed  , T. Rida  , Khairul Azhar Abdul Halim  , Zaifol Samsu  , Nur Ubaidah Saidin  , Norhasimah Alias
Published: December 2023

This research explores the impact of derivative graphite additives in enhancing the corrosion prevention system of UV curable polyurethane coatings based on palm oil. UV irradiation technique was used in this study to produce cured protection coating. Two types of particles, respectively graphite and graphene oxide were used to understand the differential of both particles in physicomechanical behaviour of the curable coating. The study delves into the formulation and characterization of these coatings, assessing their effectiveness in preventing corrosion. The polymerisation effect by UV irradiation and influence of filler (graphene oxide and graphite) on physical properties of coating were studied by using Fourier Transform Infrared Spectroscopy (FTIR) and gel content together with hardness test. Besides that, X-ray Diffraction (XRD) and Field emission scanning electron microscopy (FESEM) were used to investigate the morphology of curable coating. Meanwhile Electro impedance spectroscopy (EIS) and contact angle measurement were carried out to investigate the related behaviour on corrosion protection properties. All the results were concluded to explain the role of graphite and graphene oxide in curable coating crosslink network. The finding in this study indicates that tortuosity structured which formed by graphite and graphene oxide in UV curable coating matrix were successfully retard corrosion rate per year on mild steel from 31.24 mpy to 43.91 x 10-6 mpy. This work aims to provide valuable insights into the development of eco-friendly and efficient corrosion protection solutions in the realm of coatings and materials science.
Deposition of Polypyrrole-Carboxylated Multi-Walled Carbon Nanotube Nanohybrid Thin Film for Surface Plasmon Resonance Sensor
Authors: N. R. Mohamad  , N. A. Jamil  , M. F. M. R. Wee  , M. A. Mohamed  , M. A. Azam  , A. A. Hamzah  , P. S. Menon
Published: December 2023

Immobilization of the enzyme is the main problem and critical factor in producing high selectivity and sensitivity of a surface plasmon sensor (SPR). This study is aimed at fabricating a uniform polypyrrole (PPy) - Carboxylated Multi-Walled Carbon Nanotube (MWCNT-COOH) nanohybrid film as a mediator, thereby enhancing the functional groups to attach and immobilize the enzymes for the SPR sensor. This nanohybrid thin film of PPy- MWCNT-COOH was electrodeposited on the surface of gold (Au)/chromium (Cr) by chronoamperometry using potentiostat at 0.7V for 5s and 10s. For the first time, the MWCNT-COOH is utilized and combined with conductive polymer PPy to investigate the SPR sensor at two different wavelengths which are 670 nm and 785 nm. The SPR curves and resonance angle are red-shifted and shallower when the time of electropolymerization increases. However, the resonance angle for the 785 nm optical wavelength is blue-shifted and the full-width-at-half-maximum (FWHM) is smaller compared to the 670 nm optical wavelength. The Fourier-transform infrared spectroscopy (FTIR) spectrum examination reveals the presence of the required functional groups from the fabricated PPy-MWCNT- COOH nanohybrid thin film to attach the enzyme immobilization in future work. In conclusion, the findings of this research can broaden exciting possibilities for the low-cost fabrication of promising SPR sensors at longer wavelengths.
Assessment of the Force-Deflection Behavior of Aged NiTi Archwires in Various Inter-Bracket Distance Configurations
Authors: Asad Munir  , M. H. Hassan  , N. S. S. Khairi  , M. F. Razali
Published: December 2023

The aim of the study was to determine the force-deflection behavior of aged nickel-titanium (NiTi) archwires when subjected to bending within a bracket model featuring different inter-bracket distances. The flexural behavior of commercial 0.016 × 0.022-inch NiTi archwires was modified by subjecting them to different ageing temperatures. The archwire with the lowest unloading force during bending in a three-point bending arrangement was chosen for force-deflection evaluation at various inter-bracket distances. The findings indicate that subjecting the commercial as-received NiTi archwires to an ageing treatment at a temperature of 490 °C effectively decreased the magnitude of the unloading force from 2.0 N to 1.3 N. It was also discovered that NiTi archwires displayed unloading force in the form of a slope over the deflection course when narrow inter bracket distances of 7.0 mm and 7.5 mm were used. The force slope exhibited a significant decrease and approached a nearly constant force trend when the inter-bracket distance was increased to 8.5 mm and 9.0 mm. The unloading force of 490 °C aged NiTi archwires exhibited a progressive increase from 1.7 N to 3.4 N as the spacing between the brackets was altered from 7.0 mm to 9.0 mm. The ageing treatment approach might be useful for reducing the bending force released by commercial rectangular NiTi archwires at different inter-bracket distance settings.
Antibacterial of Limonene Against Gram Negative and Positive Bacteria
Authors: Teoh Ming Xian  , Yu Lih Jiun  , Yam Hok Chai  , Suhana Binti Hassan  , Sahrim bin Haji Ahmad  , Ruey Shan Chen  , Denesh Mohan
Published: December 2023

Foodborne disease outbreaks are prevalent worldwide, affecting human health which requires using medical products to heal. However, most medical contain nano-silver antimicrobial agents can kill bacteria and fungi, however and harms human organs based on several articles. Alternatively, limonene is a natural extract from citrus fruits and can be used as an antibacterial agent to combat these diseases. Its bio-material properties make it safe for skin contact and environmentally friendly, making it a promising candidate for addressing foodborne illnesses. This study investigates the susceptibility of limonene to the Gram-negative bacteria, Escherichia coli, and the Gram-positive bacteria, Bacillus Subtilis, by applying the minimum inhibitory concentration (MIC) method and disc diffusion method. The result of exterior ring diameter of inhibition stated mean value and standard deviation of Bacillus Subtilis at 1.133 ± 0.3682 is higher than Escherichia coli at1.067 ± 0.2055 indicated limonene is effectiveness against Bacillus Subtilis. Though the comparison limonene and nanoparticle silver has stated limonene is preferable antibacterial resistance due to the limonene produced 10 % higher than nanoparticle in comparison on the initial diameter inhibition zone against Escherichia coli through disc assay. The MIC method was applied to Bacillus Subtilis by diluting limonene with LB broth consecutively in each falcon tube and measuring optical density (OD) before and after incubation. As a result, only one petri dish has lower colonies at an optical density of 0.809 decreased from 0.834 which indicates that the minimum concentration dosage was 1 % (v/v). Therefore, these results indicate that limonene is bacteriostatic against Bacillus Subtilis in MIC.
Apropriações simbólicas da identidade nordestina: a representação de Juliette no incentivo ao consumo de cosméticos
Authors: Álvares da Trindade Thiago , Nogueira Rangel Leandro
Published: December 2023

O artigo discute as apropriações simbólicas de Juliette Freire, vencedora do Big Brother Brasil 2021, pela marca L’Occitane para promover da linha de cosméticos Mandacaru. Busca-se apresentar a transformação da participante em influenciadora digital a partir da visibilidade criada pela mídia tradicional e digital. A análise é feita com base nas contribuições de Sennet (2001), Campanella (2018), Van Krieken (2012) e Drissens (2014). Assim, entende-se que sua imagem é usada como representação da identidade nordestina, corroborando para o incentivo no consumo de produtos e serviços de seus patrocinadores.
Temettuat Defterlerine Göre Ginolu Kazasında İktisadi Faaliyetler
Authors: ÇAY Kayhan
Published: December 2023

Bu çalışmanın amacı temettuat defterlerine göre XIX. yüzyılın ortalarında Ginolu kazasının iktisadi yapısını ortaya koymaktır. Kazanın coğrafi konumu iktisadi çeşitliliğin oluşmasına katkı sağlamıştır. Zira kırsal bir bölge olan Ginolu'da halk bir taraftan tarım ve hayvancılık faaliyetleri yürütürken diğer taraftan ormancılık ve denizcilik sektörlerinde yoğun bir şekilde iş gücüne katılmıştır. Ayrıca farklı iş kollarında hizmet sektörüne de rastlanılmaktadır. Kazadaki 1.775 hanenin 1.709'u 46 farklı meslek ile uğraşmıştır. Divanların tümünde tarım ve hayvancılık görülürken hanelerin %74,9'u buğday, arpa, yulaf, mısır, siyez, keten ve keten tohumu yetiştirmiştir. Ayrıca hanelerin %69'u hayvancılıktan gelir elde etmektedir. En büyük pay büyükbaş hayvancılığa ait olmakla birlikte küçükbaş hayvancılık, arıcılık ve katırcılık diğer gelir kaynaklarıdır. Kazanın önemli iktisadi gücü olan ormancılık sektöründeki kerestecilik mesleği, halkın en fazla meşgul olduğu meslek olup hanelerin %33'ü bu iş kolunda çalışmıştır. Kazanın diğer iktisadi gücü olan denizcilik sektöründe dokuz farklı meslek yer alırken hanelerin %41,8'i bu alanda işgücüne katılmıştır.
Tren Penelitian Kemampuan Penalaran Matematis di Indonesia
Authors: Zahra Nur Shafira  , Adetia Elsa , Siti Julaeha Neng , Aulia Pertiwi Yana , Devi Dede , Adz Zikri M Faisal
Published: December 2023

Tujuan dari penelitian ini adalah untuk melakukan studi komperehensif dari penelitian mengenai kemampuan penalaran matematis pelajar selama 3 tahun terakhir, yaitu tahun 2019 sampai tahun 2021. Kemampuan penalaran merupakan kemampuan berpikir tingkat tinggi dalam pembelajaran matematika. Metode yang digunakan dalam penelitian ini adalah Systematic Literature Review (SLR) terhadap semua artikel penelitian yang terindeks Google Scholer. Analisis data yang dilakukan ialah data dianalisis secara komperehnsif, dikategorikan, dibandingkan dan dibagi menjadi beberapa topik utama serta disajikan dalam bentuk diagram. Adapun kategori yang disajikan ialah tahun, jenjang pendidikan, materi ajar, jurnal, metode, dan hasil. Subjek penelitian yang paling mendominasi ialah pada jenjang SMP. Banyak artikel yang tidak menyebutkan materi ajar dalam penelitiannya. Metode penelitian yang paling banyak digunakan dalam penelitian kemampuan penalaran matematis adalah metode deskriptif dengan pendekatan kualitatif yaitu sebanyak 16 artikel atau 36%. Hasil penelitian dari setiap klasifikasinya menunjukkan bahwa 96% klasifikasi kausalitas memiliki pengaruh yang baik terhadap penalaran matematis, 100% klasifikasi korelasional memiliki hubungan terhadap penalaran matematis, 50% memiliki kategori yang rendah dalam klasifikasi analisis kategori, tidak terdapat perbedaan penalaran matematis dalam gender, dan 100% klasifikasi pengembangan memiliki kategori yang sangat valid untuk produk yang dikembangkannya.
Hubungan Antara Kecemasan terhadap Matematika dan Prestasi Matematika pada Siswa MAN 1 Kuningan
Authors: Umu Mulyati Tuti , Pramuditya Surya Amami , Rosita Cita Dwi
Published: December 2023

Penelitian ini bertujuan untuk menginvestigasi hubungan antara kecemasan terhadap matematika dan prestasi matematika pada siswa MAN 1 Kuningan, dengan fokus pada tiga indikator kecemasan, yaitu perasaan tegang, ketidakberdayaan, dan ketakutan. Sampel penelitian terdiri dari 30 siswa XI IPA 3 MAN 1 Kuningan. Data diambil melalui kuesioner yang berisi pertanyaan tentang kecemasan matematika dan hasil tes matematika. Hasil analisis menunjukkan bahwa ada hubungan negatif yang signifikan antara kecemasan matematika dan prestasi matematika, yang menunjukkan bahwa semakin tinggi tingkat kecemasan, semakin rendah prestasi matematika siswa. Analisis lebih lanjut menunjukkan bahwa ketiga indikator kecemasan, yaitu perasaan tegang, ketidakberdayaan, dan ketakutan, memiliki hubungan yang signifikan dengan prestasi matematika siswa. Implikasi dari penelitian ini adalah perlunya perhatian terhadap faktor-faktor kecemasan yang mungkin mempengaruhi prestasi matematika siswa, serta upaya untuk meningkatkan kepercayaan diri dan keterampilan matematika siswa untuk mengatasi kecemasan yang muncul.
Analisis Kemampuan Berpikir Kritis Matematis Siswa SMP Ditinjau dari Self Efficacy Pada Materi Perbandingan
Authors: Aziz Aliyah , Puspita Wulan , Inayah Sarah
Published: December 2023

Untuk berbagai tingkatan self efficacy, kemampuan berpikir kritis matematis merupakan kemampuan yang wajib dimiliki oleh peserta didik di abad 21. Penelitian ini bertujuan untuk menganalisis kemampuan berpikir kritis matematis peserta didik kelas VIII ditinjau dari self efficacy menggunakan materi perbadingan senilai dan berbalik nilai. Jenis penelitian ini adalah eksploratif dengan pendekatan deskriptif kualitatif. Subjek dalam penelitian ini adalah 27 orang peserta didik yang berasal dari kelas VIII-A SMPN 1 Cipanas. Dengan fokus utama 3 orang yaitu subjek self efficacy tinggi, sedang, dan rendah. Instrumen dalam penelitian ini menggunakan angket self efficacy, tes Kemampuan Berpikir Kritis Matematis (KBKM) serta wawancara. Pemeriksaan keabsahan data menggunakan triangulasi waktu. Berdasarkan hasil penelitian ini disimpulkan bahwa: (1) Peserta didik dengan self efficacy tinggi memiliki KBKM yang sangat baik; (2) Peserta didik dengan self efficacy sedang memiliki KBKM yang sedang; dan (3) Peserta didik dengan self efficacy rendah memiliki KBKM yang kurang baik. Dari hasil ini, guru disarankan memperhatikan aspek self efficacy peserta didik dalam upaya melatih kemampuan berpikir kritis matematis
Agile, Effective And Efficient Organization: How Can The Public Sector Achieve This?
Authors: Marpaung Siti Khairiyah , Irfan Syaebani Muhammad
Published: December 2023

In a dynamic environment, the ability to work with agility, effectiveness, and efficiency is essential to the success of organizations, including public organizations. However, few studies investigate how public organizations in Indonesia apply the strategy to be agile, effective, and efficient. This article can be seen as an attempt to contribute to the Indonesian bureaucracy improvement strategy using qualitative research methods with a phenomenology approach. Based on the research results, it can be concluded that public organizations in Indonesia have implemented strategies to change the culture, structure and work systems supported by the HR management system. All of the strategies need to be carried out simultaneously.
The Effectiveness of Group Guidance Using the Pass The Compliment Game Technique to Enhance Students' Self-Confidence
Authors: Hasibuan Seri Jumiarti , Siregar Alfin
Published: December 2023

This study aims to determine the effectiveness of group guidance with the pass the compliment game technique to increase students' confidence in SMP Muhammadiyah Sukaramai in the 2023/2024 academic year. The method used in this research is a quantitative approach with a quasi-experimental research method, which is an experimental research method that allows researchers to control as many variables as possible from the existing situation. The results showed that no that there is no increase in student confidence by carrying out Group Guidance services through the 'pass the compliment' game technique for grade VIII of SMP Muhammadiyah Sukaramai, Tegal Sari I, Kec. Medan Area, North Sumatra 20216 for the 2023/2024 academic year.
Determinant Earnings Quality and Its Impact on Firm Value
Authors: Wibisono Muhamad Gunawan , Andesto Ronny
Published: December 2023

This study aims to examine and analyze the effect of interest rates, inflation, foreign exchange rates and profitability on earnings quality and its impact on firm value. The design of this study used causal research with a population of banking subsector companies listed on the Indonesia Stock Exchange for the period 2018-2022. The sample in this study was 41 companies determined using the purposive sampling method. The data analysis method used is multiple linear regression analysis using E- views version 12. The results of this study show that interest rates, foreign exchange rates, and profitability have a significant negative effect on earnings quality, but inflation has no effect on earnings quality. Interest rates, inflation, foreign exchange rates, earnings quality have no effect on firm value, but profitability has a significant negative effect on firm value, interest rates, inflation, foreign exchange rates, and profitability have no effect on firm value through earnings quality.
The Influence of Interest and Learning Readiness on Learning Activities of High School Students In Chemistry Online Learning In South Sulawesi
Authors: Nurhardiyanti Maddaung , A.K.Prodjosantoso A.K.Prodjosantoso
Published: December 2023

This study aims to determine the effect of students' interest and readiness to learn on the learning activities of high school students in online chemistry learning in South Sulawesi. This research is quantitative research using the expost the facto method. The population of this research is all students of high school student majoring in science in South Sulawesi Province. The research sample was 402 students obtained by using two stage clustering random sampling method. Research data collection was carried out using questionnaires on learning interest, readiness to learn and learning activities of students during online learning of chemistry. Instrument were validated by using corrected item total correlation value. The reliability test used the Cronbach Alpha coefficient on the learning interest variable of 0.804, the learning readiness variable was 0.721 and the learning activity variable was 0.753 with a very high category. The data analysis technique used was path analysis. The findings indicated that interest in learning had a significant effect, accounting for 53.1% and 52.3% at a 5% significance level. Additionally, learning readiness demonstrated a 29% influence on learning activities at the same significance level. When combined, the total influence of both interest in learning and learning readiness on high school students' learning activities reached 67.6% at a 5% significance level. Overall, the study concluded that the impact of interest in learning and readiness to learn on learning activities was notably high.
Psicoterapia como caminho ao nada
Authors: Campanhã Salgado Lara , Martins João Paulo
Published: December 2023

Este artigo, uma revisão de literatura com abordagem fenomenológico-hermenêutica baseada em Heidegger, investiga a apropriação de si em relações psicoterapêuticas. O objetivo do trabalho é mostrar um caminhar psicoterapêutico sem assunção de hipostasias, buscando a desconstrução da ideia de sujeito como substância. Desviando-se da epistemologia científica tradicional, a fenomenologia visa descrever, não explicar, os fenômenos, buscando universalizar sua essência. A hermenêutica, por sua vez, destaca a interpretação das formas de vida, enraizada em tradições e experiências diversas. Na era da técnica, conforme Heidegger, a técnica moderna não é apenas um meio para um fim, mas uma maneira de revelar a verdade, embasada em uma visão restritiva dos fenômenos. O texto explora como a técnica pode contribuir para a restrição de possibilidades e o tamponamento de sentidos na contemporaneidade. A impessoalidade, destacada como estabilizadora de significações, pode limitar as escolhas individuais. Contrapondo-se à pressa da era moderna, a psicoterapia fenomenológica-existencial adota uma postura de passividade ativa. O terapeuta aguarda pacientemente, não como agente da transformação, mas como facilitador do salto do indivíduo para possibilidades autênticas. A proposta da psicoterapia é um caminho para a abertura, não guiado por um destino técnico, mas revelando possibilidades ao longo do caminho, uma jornada para o nada, onde as transformações são abertas com as possibilidades.
Doenças Infecciosas e Parasitárias - Edição IX
Authors: Barroso L. De Freitas Guilherme , Reder Custodio de Souza Ariádine , Maria Moura de Paulo Martins Vieira Egidia , Castro de Almeida Camilla
Published: December 2023

O livro Doenças Infecciosas e Parasitárias reúne aspectos da prevenção, diagnóstico e manejo de doenças infecciosas e sexualmente transmissíveis em humanos e animais, bem como genética molecular, fisiopatologia e epidemiologia. O Brasil é cons
Estudio de XPS sobre la determinación de la energía de enlace en Ag de alta pureza
Authors:   Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León (UANL), Av. Universidad S/N, Ciudad Universitaria, San Nicolás de los Garza, México C.P. 66450, Castillo Rodriguez Guadalupe Alan
Published: December 2023

El presente estudio se concentra en la determinación precisa de la energía de enlace de la plata de alta pureza mediante la técnica de espectroscopía de fotoelectrones de rayos X (XPS), un elemento crítico en aplicaciones de alta tecnología como la electrónica, la aeroespacial y la defensa. La plata utilizada, con una pureza certificada del 99.99%, fue analizada sin alteraciones previas para asegurar que los resultados reflejaran su estado auténtico como se recibe del proveedor. Los espectros de XPS mostraron picos de energía de enlace característicos del metal puro a 368.18 eV y 374.18 eV para los niveles 3d5/2 y 3d3/2, respectivamente, con una diferencia de 6 eV que corrobora la estructura electrónica esperada para la plata metálica. La anchura a media altura (FWHM) observada de 0.9 eV subraya la homogeneidad y pureza excepcionales de la muestra. Estos datos de energía de enlace no solo confirman la alta calidad de la plata, sino que también proporcionan un punto de referencia esencial para la comunidad científica, permitiendo comparaciones detalladas con otras muestras y contribuyendo al desarrollo de procesos y materiales innovadores. Este estudio destaca la XPS como una herramienta indispensable en la caracterización de metales nobles y establece un estándar para futuras investigaciones.
Tópico de Ciencia La Escalera Alfa: Forjando los Elementos del Universo
Authors:   Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León (UANL), Av. Universidad S/N, Ciudad Universitaria, San Nicolás de los Garza, México C.P. 66450, Castillo Rodríguez Guadalupe Alan
Published: December 2023

En el corazón de las estrellas masivas, se desarrolla un proceso nuclear fascinante conocido como la escalera alfa, esencial para la formación de elementos más pesados que el helio y fundamental para entender la evolución estelar y la composición del universo. Este proceso comienza con el fenómeno conocido como el proceso triple alfa, donde tres núcleos de helio se fusionan para formar un núcleo de carbono. A medida que avanza, el carbono y otros elementos resultantes capturan más partículas alfa, formando elementos progresivamente más pesados, desde el oxígeno hasta el níquel-56. La escalera alfa no solo es clave en la transmutación elemental, sino que también es vital para la estabilidad de las estrellas. La energía liberada en estas reacciones nucleares, principalmente en forma de rayos gamma, proporciona la presión necesaria para contrarrestar la gravedad, manteniendo el equilibrio estelar. Sin embargo, este proceso tiene sus limitaciones y se detiene en el níquel-56, dado que la fusión de elementos más pesados consume más energía de la que libera, lo que eventualmente lleva al colapso estelar y, en algunos casos, a explosiones de supernovas. Las estrellas masivas, a través de la escalera alfa, actúan como "fábricas cósmicas", enriqueciendo el medio interestelar con una diversidad de elementos esenciales para la formación de planetas y la vida. La comprensión de este proceso no solo arroja luz sobre la evolución estelar, sino que también revela la conexión intrínseca entre los procesos cósmicos y la existencia de vida en el universo. A pesar de los avances en nuestra comprensión, la investigación continua en la nucleosíntesis estelar y la escalera alfa promete desentrañar aún más los misterios de nuestro universo y nuestra propia existencia cósmica. Este artículo profundiza en la escalera alfa, desde su inicio con el proceso triple alfa hasta su papel crucial en la evolución estelar y la formación de elementos, destacando su importancia en el tejido mismo del universo y planteando preguntas para futuras investigaciones en este fascinante campo de la astrofísica.
Spatial and temporal changes of temperature zones on Earth and in Türkiye according to Köppen (1884) climate classification
Authors: Tekkanat İlyas Sadık
Published: December 2023

Using monthly air temperature data from, 3202 meteorological stations for the period 1971-1990, the temperature zones of the world are redefined according to the Köppen (1884) thermal zone classification. Moreover, using monthly air temperature data from 155 stations from 1961 to 2020, the spatial changes in temperature zones are analyzed according to the reference climate periods 1961-2020, 1961-1990, 1981-2010 and 1990-2020. The world temperature map based on meteorological measurements is largely similar to Köppen's map of 1884, which was prepared by utilizing various phytogeographic studies. The most obvious difference occurs in the polar belt in the Northern Hemisphere, which is not as widely distributed as in the 1884 map. However, some shifts in the boundaries of the so-called temperature belts were observed over Cape Horn, Madagascar island, southwest Australia and the Mediterranean Basin. On a larger scale, over Türkiye, the warm areas tended to shift further north and towards higher elevations, whereas the cold areas representing northeastern Anatolia shrank in area and the temperature regime changed. The results of this study reveal for the first time the spatio-temporal variation of the so-called Köppen (1884) temperature belts based on station data both in the world and in Türkiye. The results are useful for understanding the temperature characteristics on Earth and in Türkiye.
Comportamiento agronómico del olivo (Olea europaea L.) en relación a las temperaturas locales en el sudoeste bonaerense, Argentina
Authors: Leandro Goñi , RJ García , L Suñer
Published: December 2023

Las bajas temperaturas representan una limitante para implantar olivos (Olea europaea L.) en muchas regiones. En el sudoeste de la provincia de Buenos Aires (SOB), la producción olivícola surge como una alternativa a los planteos típicos de cereales de invierno y ganadería. La finalidad de este trabajo fue conocer en qué fecha ocurren las etapas fenológicas para la cultivar Arbequina y relacionarlo con el estudio de las temperaturas locales en tres sitios del SOB: Coronel Dorrego (Dorrego), Puan y Cabildo. Se calculó el riesgo de que se produzcan temperaturas que afecten el desarrollo del cultivo durante el invierno y la probabilidad de heladas en fechas críticas del cultivo. En los meses invernales, se registraron -7ºC en Cabildo y Puan, no así en Dorrego, mientras que las temperaturas no alcanzaron -12ºC en ningún sitio. También se registraron algunas heladas luego del período de brotación, principalmente en Cabildo. La fecha límite para cosechar el fruto con mínimo riesgo de temperaturas congelantes (≤10%) resultó más temprana en Puan, siendo Dorrego la más tardía, es decir, con posibilidad de extender la recolección hasta el 27 de mayo. Los resultados indicarían que el SOB presenta condiciones climáticas aptas para el desarrollo de la olivicultura. Sin embargo, el riesgo estará sujeto principalmente a las heladas tempranas en primavera, momento en que ocurre la brotación de las yemas florales. Estos resultados deberían ser útiles para realizar un manejo más eficiente de las prácticas agrícolas en el olivar. Continuar con el estudio del comportamiento de Arbequina y otras cultivares en la zona será imprescindible para fomentar nuevas inversiones.
Strategies for sustainable learning design: A response to Daniela Gachago’s “Learning Design Voices” provocation
Authors: Jaffer Tasneem
Published: December 2023

Gachago (2023) proposes Compassionate Learning Design as a way to humanise education. However, much of the work relating to humanising pedagogies paints the perfect utopia. Only if learning designers and educators who do learning design work establish what is real and achievable in their own contexts as existing systems are well-entrenched and take time to shift, that we can promote a future where care, equity and justice are an integral part of learning design.
“Open Mind, Open Heart and Open Will” – Applying Theory U for developing meaningful learning in the context of COVID-19
Authors: Gunness Sandhya , Rampersad Rubina
Published: December 2023

In this interview, Sandhya Gunness and Rubina Rampersad from the University of Mauritius, discuss their adoption of a Theory U approach to learning design during the COVID-19 pandemic. The discussion unfolds to reveal the unique challenges faced by the small island of Mauritius, with a shrinking student population and the emergence of private universities. The interview delves into the equity concerns arising from the shift to online learning, highlighting the challenges faced by their course participants in their own individual teaching contexts. The interviewees surface the subtleties of societal differences in Mauritius acknowledging the challenges and nuances within their community. The core of the interview revolves around the Theory U approach adopted for their education leadership module, emphasising the importance of building relationships over the duration of the course and creating supportive learning environments for adult learners. Sandhya and Rubina share their experiences of creating a space for open communication, vulnerability, and intense collaboration. The emphasis on care, empathy, and meeting students where they are becomes a key takeaway for learning designers, highlighting the necessity of building relationships and adapting to diverse student needs.
Designing and adapting for community with Intentionally Equitable Hospitality
Authors: Bali Maha , Zamora Mia
Published: December 2023

In August 2020, Equity Unbound collaborated with OneHE to curate community building resources for online teaching. We, Maha and Mia, together with Autumn Caines, in our roles as leaders of Equity Unbound and Virtually Connecting, were the lead curators. The resources themselves were a response to multiple global inequities. In the context of the pandemic, community building was more important and urgent than ever, it needed to happen online and few people knew how to do it well. The OneHE-Equity Unbound resources were created and shared with Intentionally Equitable Hospitality (IEH) with the following in mind: anticipating potential inequalities faced by learners and offering adaptations for educators according to their own context. Diverse educators from the Global South and North were involved, so the creation itself was an inclusive process. In this chapter, we start by describing Intentionally Equitable Hospitality (IEH) followed by our experiences of practising it when doing introductory activities, warm-up activities and finally ongoing engagement and Liberating Structures.
Ten principles of alternative assessment
Authors: Elkhoury Eliana
Published: December 2023

Assessment design is an integral part of learning design. This work came to life due to the demand for alternative ways of assessing students highlighted by the COVID-19 pandemic. This chapter presents a summary of ten principles for alternative assessment in higher education. The chapter is divided into four sections. In this first section, I locate myself and describe the context of the chapter. In the second section, I provide a brief background of why this chapter is needed. In the third section, I describe the theoretical frameworks that inspired my work. The last section contains a description of each of the principles. Within the description, there are concrete examples and resources that will help readers in the process of rethinking their assessment design. This chapter is significant to higher education educators as well as educational developers.
It took a pandemic to help us contextualise the value of learning designers in higher education
Authors: Prusko Patrice , Kilgore Whitney
Published: December 2023

Much has been written about burnout, the difference between a learning engineer and a learning designer, and the plight of adjunct faculty. We wanted to find out how those whose role was within the learning design domain experienced compassion fatigue and burnout. Stories illuminated the notions of identity that are intertwined with the idea of learning design practice, work-life balance, and personal and professional selves. Through review of relevant literature and interviews and focus groups that examined the ways in which the participants experienced compassion fatigue and burnout during the pandemic, the following themes emerged: 1) toxic work environment, 2) care and fatigue, and 3) life-work balance. This exploratory study gives insights into the interconnectedness between identity, care, and life-work balance that learning designers in higher education experience. Before and during the pandemic, learning designers have led with an ethic of care; now we, the broader educational community, needs to care for them. Recommendations include supporting time-blocking calendars, communicating clearly to supervisors what the current workload is, and educating leadership so that they better understand the work.
Reimagining authentic online assessment for large classes in a low-tech environment
Authors: Meintjes Anneri
Published: December 2023

The chapter is divided into two parts. The first part discusses the theoretical framework of authentic assessment proposed by Ashford-Rowe et al. (2014) and presents two case studies on student presentations to illustrate the principles of the framework. The second part addresses practical considerations for designing authentic online assessments in the South African higher education context, specifically for large classes with limited resources. The chapter provides practical examples based on the author's experience working with academics from various disciplines.
The concept of authentic assessment is explored, emphasising its alignment with workplace demands. The eight principles identified by Ashford-Rowe et al. (2014) are outlined, providing guidance for the design of authentic assessments. The chapter further examines how authentic online assessment can be implemented effectively, considering the affordances of technology in a low-tech environment. Two case studies, focusing on video presentations and poster presentations, demonstrate how authentic online assessments can be integrated into courses. Challenges related to internet access and device availability are discussed, along with strategies such as flexible deadlines and alternative submission methods.
Overall, this chapter aims to present a comprehensive understanding of authentic online assessment in a resource-constrained context, offering practical insights and recommendations for educators and academic developers in South Africa and similar environments.
Geologic map of the southern Bitterroot Fault, Bitterroot Valley, western Montana
Authors:   Montana Bureau of Mines and Geology, Lonn Jeffrey D. , Gavillot Yann G.
Published: December 2023

1:24,000-scale geologic map of the area surrounding the southern part of Quaternary Bitterroot fault
Quaternary fault map of Jefferson County, southwest Montana
Authors:   Montana Bureau of Mines and Geology, Gavillot Yann G.
Published: December 2023

This Quaternary fault map identifies new and existing faults that demonstrate evidence of earthquake surface ruptures based on lidar data, geomorphic and topographic analyses, field checks, and, when available, published geological maps.
Productivity and economics of forage sorghum (Sorghum . bicolor) in association with legumes under different harvesting times and nitrogen levels .
Authors: S.N. RAM  , BHAGWAN SINGH
Published: December 2023

eceived January 2001 A field experiment was conducted during rainy (kharif) seasons of 1998 and 1999, to study the effect of intercrops havesting time and levels of nitrogen on productivity and economics of forage sorghum [Sorghum bicolor (L.) Moench] under rainfed conditions. Sorghum cowpea [Vigna unguiculata (L.) Walp.] inter cropping system recorded significantly higher green forage yield, dry matter yield, sorghum green forage yield equivalent, net income and net return Re invested than sorghum alone and sorghum clusterbean [Cyamopsis tetragonoloba (L.) Taubert] intercropping system during both the years. Harvesting done at 75 days after sowing being statistically at par with harvesting at 60 days registered significantly higher green forage yield of sorghum and sorghum legumes as compared to harvesting at 45 days during both the years. Net income and net returns1Re invested obtained with the harvesting at 60 days was statistically higher than harvesting at 45 days and 75 days. Application of 80 kg Nlha significantly increased the forage yield, net income and net return1Re invested compared with the control and 40 kg Nlha during both the years.
Effect of Azospirillum at different levels of nitrogen on yield of rainfed transplanted rice (Oryza sativa) , . K. MANJAPPA , , . ,= , , . . 2, . . Agricultural Research Station (Paddy), University of Agricultural Sciences, Sirsi, Karnataka 581 401
Authors: K. MANJAPPA
Published: December 2023

Received :January 2001 An experiment was conducted at Agricultural Research Station (Paddy), Sirsi, during the rainy seasons of 1997 and 1998, to know the efficacy of Azospirillum in conjunction with inorganic nitrogen on yield of rice (Oryza sativa L.). The experiment consisted of 8 treatment combinations of 2 levels of Azospirillum (no Azospirillum and Azospirillum) and 4 levels of nitrogen (0,50,75 and 100% recommended dose of nitrogen). On an average over 2 years, the grain yield of rice increased significantly with Azospirillum treatment (4,.957 kg/ha) compared to no Azospirillum treatment (4,394 kglha). Similarly, the grain yield of rice increased significantly with increased levels of nitrogen. The grain yield recorded i with Azospirillum 75% recommended dose of N (5,330 kg/ha) was significantly higher over that of no Azospirillum 100% recommended dose of N (5,146 kg/ha) but was on a par with that of Azospirillum 100% recommended dose of N (5,460 kg/ha).