bluuebunny/crossref_metadata_2025 huggingface dataset:
Calibration and Validation of CROPGRO-cowpea Model of DSSAT for Four Cowpea Varieties under Drought Stress
Authors: Célestin Thiombiano , Abdulrahman Lado , Hussaini Muhammad Auwal , Lawan Bassam Abdulrahman , Idriss Serme
Published: April 2023

The Decision Support System for Agrotechnology Transfert (DSSAT) is a software comprising crop simulation models. The aim of this study was to: Calibrate the CROPGRO-cowpea model of DSSAT for four cowpea varieties, and Validate the model using a data set collected under drought stress For this purpose, experiments were carried out in 2020 and 2021 dry seasons in Burkina Faso at Kamboinsin in the Centre of Environmental and Agricultural Research and Training (CREAF). The model calibration was done using data including days to 50% flowering, days to maturity, above-ground biomass, and grain yield per hectare collected from an experiment without water and nutrient stress, and the GenCalc software was used for estimating the genetic coefficients of the varieties. Data from two drought stress treatments, such as D1: drought at seedling stage, and D2: drought at flowering stage, were used for validating the model. The results of the calibration showed that the model excellently simulated the days to flowering with a normalized root mean square error (nRMSE) of less than 10% and a high degree of agreement for all the varieties. The simulation of the days to physiological maturity was excellent for 50% of the varieties (nRMSE<10%) and good for the others (10 < nRMSE < 20%). The simulation of the grain yield per hectare ranged from excellent to good. Poor prediction of the above-ground biomass was attained for 75% of the varieties (nRMSE â‰¥ 40%), while the fair simulation was recorded for 25% (nRMSE=27%) during the model calibration. The statistics of the validation process showed an excellent simulation of the days to flowering (nRMSE= 1.85%; R2=0.98; d-index=0.99) and a good prediction of the days to maturity (nRMSE=13.82; R2=0.87; d-index=0.53) for all the varieties. Simulated above-ground biomass was in poor agreement with the observed values (nRMSE=106.62%; R2=0.92; d-index=0.36). Fair prediction of the grain yield by the model was achieved during the validation (nRMSE = 27%). From these results, it can be concluded that the DSSAT model can be considered an efficient tool for predicting cowpea phenology, growth, and yield in optimum conditions of development. However, in drought stress conditions, the sensitivity or tolerance status to the drought of the variety can reduce the accuracy of the grain yield prediction by the model.
Morphological variations observed in Trichoderma asperellum isolated from commercial products
Authors: Foyate Meshu Shewarega
Published: April 2023

Genus Trichoderma contains many species that are of great economic importance because of their ability to suppress pathogens and enhance their biocontrol capabilities against soil borne pathogens. In order to utilize the full potential of Trichoderma species in specific applications, precise identification and characterization are vital. The use of molecular markers has given a boost to the analysis of the accurate variation among various isolates of bio-agents. The present study was carried out to estimate the morphological diversity among commercial products of Trichoderma. Trichoderma based commercial products produced by different firms and made available for sales were collected from Akola and Nagpur markets. A total of eight isolates were isolated from talc powder carrier based samples on TSM. The Trichoderma isolates were differentiated by colony characters and morphological features. All isolates showed different growth patterns, colony colour, colony type, pigmentation and morphological characters like phialides, conidial size and shape.
Modifications on Book-Valued Ratios
Authors:   Department of Economics, Business Division, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece, Georgiou Catherine
Published: April 2023

Purpose: In this paper we try to explain US stock market variations and cash flow fundamentals by employing three different book-valued based ratios. First, we explore the explanatory capacity of the simple book-market ratio on time-varying expected returns, and procced on altering its construction so as to enhance its performance. We then run the extra mile by constructing two new ratios, the book-dividends and book-earnings ratios based on the long-run equilibrium relationships between book, dividends and earnings. Our analysis includes evidence of predictability on dividend and earnings growth rates on the S&P 500 for the most recent sample period 1926-2018. We also investigate the ratios’ forecastability by sub-sampling. Design/methodology/approach: We commence our analysis with the conventional book-market (bm) ratio and by failing to reject the hypothesis of a unit root, we propose the modified book-market (mbm) ratio, whose construction is based on the long-run equilibrium relationship between book (b) and market (m) values. We proceed on associating book values to dividends and earnings series and fix the book-earnings (be) and the dividend-book (db) ratios. We similarly modify be and db, and examine their forecasting performance on returns, dividend and earnings growth. Findings: In-sample evidence suggests that an investor who employs mbm can improve its forecasts by 37% and 41% in the 7- and 10-year return horizon, while the modified dividend-book (mdb) proves even more beneficial by explaining 53% and 59% in similar return horizons. Our modified book-earnings (mbe) has a very good in-sample fit to the earnings growth data unlike the rest of the predictors. With respect to the out-of-sample performance, mbm manages to surpass the simplistic forecast benchmark only at the 10-year horizon by 15% while mdb attains an impressive R_oos^2 of 47% and 71% at the 7- and 10-year return horizon. Research limitations/implications: Further research is required so as to solve the earnings puzzle in terms of forecasting along with the necessity to understand the economical sources behind non-stationarity in valuation ratios. Originality/value: We believe that our paper may prove enlightening to investors focused on portfolio allocation and asset pricing and scholars interested in return forecasting, capital budgeting and risk identification.
Bank Capital Buffers and Bank Risks: Evidence from the Namibian Banking Sector
Authors:   Department of Economics, University of the Western Cape, South Africa, Sheefeni Johannes P. S.
Published: April 2023

Purpose: This paper analysed the effects of bank’s risk on capital buffer in Namibia, in the absence of the consensus on the cyclical behavior of capital buffers. Design/methodology/approach: The study employed the autoregressive distributed lag (ARDL) modelling technique on quarterly data for the period 2001 to 2019. Findings: The study found the following: First, there is a long run relationship between the dependent variable and the independent variables. Second, the study showed that the ratio of NPLs to gross total loans negatively affect capital buffers in the short run, while it positively affects capital buffers in the long run. Furthermore, return on assets and liquidity negatively affects capital buffers in both the short and long run. On the contrary, bank size in form of log of total loans positively affects capital buffers in both the short and long run. Research limitations/implications: The unavailability of data of a long-term span is not desirable. Moreover, the limited data of certain variables narrowed the choice of a variety of variables that could be included in the study. Originality/value: The paper contributes to the hypothesized theory of countercyclical. The policy implication from these findings is that the presence of countercyclical relationship is in support of the transition from Basel II to Basel III to mitigate the procyclical as experienced under Basel II accords as documented in the literature. Future studies should focus on using a variety of variables to assess this relationship and see whether or not the outcome will be different.
Flame Dynamics in an Optically Accessible Solid Fuel Ramjet Combustor
Authors: Senior William C. B. , Gejji Rohan M. , Slabaugh Carson D.
Published: April 2023

Flow–flame interactions were investigated in an optically accessible solid fuel ramjet combustor. Experiments were performed with a single hydroxyl-terminated polybutadiene fuel slab located downstream of a backward-facing step in a rectangular chamber. To emulate flight-relevant combustor conditions, unvitiated heated air was directed through the combustion chamber with an inlet temperature of [Formula: see text], chamber pressures of 450–690 kPa, and port Reynolds number of [Formula: see text]. To characterize the heat-release distribution and velocity field, 20 kHz  [Formula: see text]-chemiluminescence and 10 kHz particle imaging velocimetry measurements were used. Comparison between the mean [Formula: see text] chemiluminescence images acquired at three flow conditions indicates reduction in flame height above the grain with increasing air mass flow rate. Dominant heat-release coherent structures in the statistically stationary flow are identified using the spectral proper orthogonal decomposition technique implemented on time series of instantaneous images. The spatial mode shapes of the chemiluminescence and velocity field measurements indicated that the flow–flame interactions were dominated by vortex shedding generated at the backward-facing step in the combustor, at Strouhal numbers of 0.06–0.10. The frequency corresponding to these modes is shown to be invariant of air mass flux, indicating that system dynamics are primarily dependent on the backward-facing step geometry and the bulk velocity in the combustor.
Numerical Simulation of the High-Speed Leg of the National Transonic Facility
Authors: Elmiligui Alaa , Rivers S. Melissa , Walker Eric
Published: April 2023

Numerical simulations for the flow inside the high-speed leg of the National Transonic Facility were conducted. Simulations were conducted for three configurations: the empty tunnel, an installed body of revolution, and the NASA Common Research Model installed in the test section. Simulations were performed for a test-section Mach numbers of 0.7 and 0.85 and a corresponding Reynolds number of 8 million per ft. The numerical simulations were performed using the NASA USM3d-ME Navier-Stokes flow solver with the Spalart-Almaras one-equation turbulence model and were run in the steady-state mode. USM3D-ME supports solutions on mixed-element grids which provide improved numerical simulation using the flow-aligned anisotropic hexahedral or prismatic cells in the boundary layer and isotropic tetrahedral cells away from the boundary layer. A controller was developed that automated the outflow boundary and streamlined the process of running multiple simulations. The use of a dynamic outflow boundary was the key parameter to drive a simulation to the desired tunnel test section conditions. The numerical simulations captured the expected flow features in the NTF test section and in the tunnel plenum. The simulations revealed that the separation of the flow inside the diffuser is asymmetric and more extensive toward the bottom wall. Analysis of the flowfield was conducted, and the computed drag coefficient was compared to wind tunnel data.
Maximizing Lift-to-Drag and Thrust-to-Drag Ratios for Trimmed Hypersonic Vehicles
Authors: Mbagwu Chukwuka C. , Dalle Derek J. , Driscoll James F.
Published: April 2023

Ways to maximize the lift-to-drag ([Formula: see text]) and the thrust-to-drag ([Formula: see text]) ratios of hypersonic vehicles are computed using the reduced-order model Michigan-AFRL Scramjet in Vehicle (MASIV). The 84 geometries considered are variations of a generic X-43 for seven chord lengths and three span lengths of the two horizontal stabilizers, and four engine widths. For all cases the vehicle is trimmed for cruise at Mach 8. Computed for each geometry were [Formula: see text], angle of attack, deflection angle of the horizontal stabilizer, specific impulse, and engine equivalence ratio. It was found that the “lifting body” design (with small horizontal stabilizers) has a larger [Formula: see text] than a wing–body design. Large horizontal stabilizers may not be desirable at hypersonic speeds because, while they reduce the angle of attack and reduce the wave drag, the added length of leading edges increases viscous drag. In addition, the optimum acceleration history was computed that minimizes the fuel required for an ascent, for different geometries. Selecting a large dynamic pressure trajectory was found to significantly minimize the fuel required. The scope of the work is limited to aerodynamics, and it does not consider either vehicle stability or control.
Angular Velocity Estimation Using Rate-Integrating Gyro Measurements
Authors: Arjun Ram S. P. , Akella Maruthi R. , Zanetti Renato
Published: April 2023

Rate integrating gyroscopes (RIGs) measure integrated angular rates or angular displacement, requiring an observer or filter to provide full state feedback to the attitude controller. A nonlinear observer is presented, which estimates the angular velocity of a rotating rigid body using continuous-time measurements from an RIG. Torque applied to the system is assumed to be accurately known. When the inertia matrix is accurately known, the provided observer achieves exponential convergence, while an asymptotically converging adaptive observer is designed for cases when the inertia is unknown. The nonadaptive observer is shown to be robust to bounded inaccuracies in the knowledge of inertia and external torque acting upon the system. For the adaptive observer, conventional certainty equivalence methods require the angular rate states that are unavailable. To overcome this problem a novel update rule with additional control knobs is proposed, which uses just the attitude states for inertia parameter adaptation. The observer is tested in simulation to demonstrate its effectiveness.
Flight Dynamics Modeling and Aerodynamic Parameter Identification of Four-Degree-of-Freedom Virtual Flight Test
Authors: Tai Shang , Wang Lixin , Wang Yanling , Bu Chen , Yue Ting
Published: April 2023

Compared with the forced oscillation test in a conventional wind tunnel test, the wind tunnel virtual flight test can achieve partially constrained dynamic motion of the model in the wind tunnel by manipulating the control surface deflection. In this paper, a new four-degree-of-freedom (4-DOF) wind tunnel virtual flight test device is established. Compared with the 3-DOF wind tunnel virtual flight test with rotation around the center of mass, the model adds vertical motion, enabling it to simulate free flight more realistically. In this paper, the nonlinear flight dynamics model of 4-DOF wind tunnel virtual flight test is established, the differences in dynamics characteristics between it and free flight are analyzed, and the identification model of aerodynamic derivatives based on 4-DOF wind tunnel virtual flight test is derived. To ensure the safety of the test, the longitudinal altitude control law as well as the sideslip and roll angle control laws in the lateral direction are designed. Finally, a set of aerodynamic parameter identification methods based on a 4-DOF wind tunnel virtual flight test is formed. The output error method is used to identify the aerodynamic derivatives of the test model, and the accuracy of the identification results is higher than that of the 3-DOF wind tunnel virtual flight test.
Inverse Design Method for Low-Boom Supersonic Transport with Lift Constraint
Authors: Ding Yu-Lin , Han Zhong-Hua , Qiao Jian-Ling , Chen Qing , Song Wen-Ping , Song Bi-Feng
Published: April 2023

The low-boom inverse design method is of great interest for the preliminary design of supersonic transport (SST), owing to its good capability of reducing sonic boom at low computational cost. However, the main challenge is how to prescribe an attainable target. This paper proposes an inverse design method using a new target-generation strategy to address this challenge. Unlike existing methods such as the Jones–Seebass–George–Darden method and the mixed-fidelity inverse design method [the Li–Shields–Geiselhart (LSG) method], the proposed method directly parameterizes the near-field overpressure distribution of a reference configuration and minimizes the ground perceived level in decibels (PLdB) predicted by solving the augmented Burgers equation to obtain an optimal target distribution, subject to cruise lift and volume constraints. The proposed method is demonstrated by the Japan Aerospace Exploration Agency (JAXA) Wing Body case, which shows that it mitigates sonic boom under lift constraint and achieves a reduction of 2.07 PLdB more than the LSG method. The proposed method is applied to the low-boom design of a large SST configuration called NPU-T7104, which is close in size to the Tupolev Tu-144; results show that aerodynamic performance is maintained while shock wave coalescence is effectively prevented, and ground-boom intensity is dramatically reduced.
Effects of Hydrogen/Methane on the Thermal Environment of Heavy-Duty Gas Turbine Combustor
Authors: Zhang Xiaoxin , Ai Qing , Wang Wenzhuo
Published: April 2023

Hydrogen is the most promising fuel for reducing carbon emissions, but hydrogen combustion produces higher temperature compared to hydrocarbon fuel. In this paper, a three-dimensional compressible combustion–flow–heat transfer model of combustor was established, and a dry-low-emission combustor was examined by using the realizable [Formula: see text] model, transported probability density function, and discrete ordinates model combining weighted sum of gray gas model, analyzing the effects of hydrogen/methane blended fuel and thermal boundaries on the combustor thermal environment. The results show that when the fuel hydrogen volume percentage increases from 0 to 75%, the maximum gas temperature and [Formula: see text] concentration on the central axis of the combustor increase by about 160.8 and 662.9%, respectively; the maximum incident radiant heat flux of the combustor wall increases by about 150%; and the local maximum ratio of the radiant heat transfer to the total heat transfer through the wall increases from about 34 to about 49%. The effect of the boundary conditions varies depending on the hydrogen percentage. At the hydrogen percentage of 75%, the maximum wall-incident radiant heat flux under the adiabatic condition is nearly 180.3 and 77.4% higher than the values at 1370 and 1920 K isothermal boundaries, respectively.
ANALISIS PENGARUH PERPUTARAN PIUTANG TERHADAP LABA KOTOR (Studi Kasus pada Perusahaan Kawali Poultry Shop)
Authors: Sa'adah Wiwin Widiati , Suwirta Utti , Rohaeni Eni
Published: April 2023

Laba Kotor pada Perusahaan Kawali Poultry Shop mengalami flktuatif selama 5 tahun terakhir yaitu dari tahun 2016 sampai tahun 2020. Salah satu faktor yang berpengaruh terhadap Laba Kotor adalah Perputaran Piutang yang meningkat. Tujuan dar penelitian ini adalahuntuk mengetahui: 1) Perputaran Piutang pada Perusahaan Kawali Poultry Shop. 2) Laba Kotor pada Perusahaan Kawali Poultry Shop. 3) Besarnya pengaruh Perputaran Piutang Terhadap Laba Kotor. Metode penelitan yang digunakan dalam penelitian ini adalah metode deskriptif dengan pendekatan kuantitatif. Hasil penelitian menunjukkan: 1) Perputaran Piutang pada Perusahaan Kawali Poultry Shop pada tahun 2016 sampai dengan tahun 2020 mengalami kenaikan dan penurunan atau fluktuatif selama 5 tahun terakhir. Hal ini dikarenakan penjualan secara kredit yang menyebabkan piutang perusahaan dapat meningkatkan Piutang Perusahaan. 2) Laba Kotor pada Perusahaan Kawali Poultry Shop pada tahun 2016 sampai dengan tahun 2020 mengalami fluktuatif. Hal ini dikarenakan Perputaran Piutang yang mengalami naik turun. 3) Pengaruh Perputaran Piutang terhadap Laba Kotor pada Perusahaan Kawali Poultry Shop berpengaruh positif dan signifikan, hal ini berarti bahwa setiap peningkatan Perputaran Piutang dapat meningkatkan tingkat Laba Kotor Perusahaan dan sebaliknya setiap penurunan Perputaran Piutang mengakibatkan menurunnya tingkat Laba Kotor.
NILAI NILAI KEARIFAN LOKAL KESENIAN SINTREN DI DESA JADIKARYA KEAMATAN LANGKAP LANCAR KABUPATEN PANGANDARAN
Authors: Musadad Nur Anwar , Brata Yat Rospia , Budiman Agus
Published: April 2023

Penelitian ini bertujuan untuk mengetahui perkembangan kesenian Sintren di Desa Jadikarya Kecamatan Langkaplancar Kabupaten Pangandaran dan untuk mengungkapkan nilai-nilai kearifan lokal kesenian Sintren di Desa Jadikarya Kecamatan Langkaplancar Kabupaten Pangandaran. Metode pada penelitian ini menggunakan metode Kualitatif yaitu (1) Heuristik, (2) Kritik, (3) Interpretasi, dan (4) Historiografi. Pengumpulan data yang dilakukan penelitian ini adalah (1) Studi Pustaka; dan (2) studi lapangan, yang terdiri dari (a) teknik observasi, (b) teknik wawancara atau interview. Dari hasil penelitian menunjukkan bahwa kesenian Sintren telah berkembang, sedangkan nilai-nilai kearifan lokal dari kesenian Sintren adalah (1) Nilai religi, (2) Nilai Sosial Kemasyarakatan. (3) Nilai Seni. (4) Nilai Sejarah. (5) Nilai Budaya. (6) Nilai Ekonomi. (7) Nilai Pengetahuan dan Pendidikan. (8) Nilai Hiburan Adapun manfaat dari hasi penelitian ini adalah sebagi bahan informasi  sejarah budaya tentang Kesenian Sintren di Desa Jadikarya Kecamatan Langkaplancar Kabupaten Pangandaran dan diharapkan agar masyarakat sepatutnya merasa bangga memiliki, mencintai dan selalu melestarikannya sebagai ketahanan dan entitas budaya lokal suatu daerah atau wilayah.
PERANAN HERMAN SARENS SOEDIRO DALAM KEMERDEKAAN REPUBLIK INDONESIA (1942-1950)
Authors: Nursanti Tita , Soedarmo Uung Runalan , Sondarika Wulan
Published: April 2023

Penelitian ini memiliki tujuan untuk mengetahui biografi Herman Sarens Soediro, dan untuk mengetahui peranan Herman Sarens Soediro dalam kemerdekaan Republik Indonesia (1942-1950). Metode yang digunakan adalah metode historis meliputi tahapan heuristik, kritik, interpretasi dan historiografi. Hasil penelitian menunjukan, Herman Sarens dalam perjalanan hidupnya telah mengabdikan diri bagi almamaternya yaitu Tentara Nasional Indonesia (TNI) Angkatan darat (AD). Herman lahir di kota Pandeglang, Banten, Jawa Barat pada 24 Mei 1930. Karier militer Herman dimulai pada tahun 1945 sebagai Tentara Pelajar Siliwangi (TPS) Garut. Saat itu usianya tergolong muda karena masih 15 tahun.  Memasuki tahun 1950 Herman masuk ke dalam jajaran perwira TNI di Divisi Siliwangi. Keberhasilan Herman Sarens Soediro sebagai perwira pertama Tentara Pelajar Siliwangi (TPS) di kota Banjar untuk menghubungi serta meminta bantuan logistik kepada MBTD (Markas Besar Tentara Djawa) di Yogyakarta. Herman telah menjadi gerilyawan yang memanggul senjata dan menghalau musuh. Seperti menumpas penjajah dan aksi-aksi pemberontakan terhadap Negara Kesatuan Republik Indonesia (NKRI). Diantaranya bergerilya di daerah Banjar-Ciamis, menumpasan PKI Madiun, dan pengusiran Belanda di daerah Subang dibawah perintah Markas Besar Komando Djawa (MBKD).
IMPLEMENTASI MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS DAN BERPIKIR KREATIF
Authors: Yani Yani , Fajra Tiffany Nurul , Yulisma Lia
Published: April 2023

Kemampuan berpikir kritis dan berpikir kreatif siswa rendah. Model yang dapat meningkatkan kemampuan berpikir kritis dan kreatif adalah Problem Based Learning.Tujuan penelitian untuk mengetahui implementasi model Problem Based Learningterhadap kemampuan berpikir kritis dan berpikir kreatif siswa. Jenis penelitian ini Penelitian Tindakan Kelas Kolaborasi. Desain penelitian menggunakan posttest only design. Subjek penelitian adalah siswa kelas VIIIB berjumlah 32 orang. Pemilihan subjek penelitian secara random sampling. Prosedur terdiri dari perencanaan, pelaksanaan, dan refleksi. Sumber data dari wawancara, posttest, dan dokumentasi pembelajaran. Sedangkan teknik analisis data menggunakan triangulasi metode. Berdasarkan hasil penelitian, pada variabel kemampuan berpikir kritis, rata-rata nilai posttest mengalami peningkatan pada siklus 1 sebesar 68,44%, siklus 2 sebesar 79,69%. Sedangkan pada variabel kemampuan berpikir kreatif rata-rata nilai posttest secara klasikal mengalami peningkatan pada siklus 1 sebesar 72,08%, siklus 2 sebesar 84,79%. Simpulan dari penelitian ini adalah implementasi model problem based learning dapat meningkatkan kemampuan berpikir kritis dan berpikir kreatif siswa kelas VIIIB SMP Negeri 1 Ciamis.Kata Kunci: Berpikir Kritis, Berpikir Kreatif, Model Problem Based Learning, Sistem Ekskresi
UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR PESERTA DIDIK KELAS XII MELALUI PENGGUNAAN MEDIA FLASH CARD PADA MATERI EVOLUSI
Authors: Puriasih Amanah Lista , Warsono Warsono , Cahyadin Agus
Published: April 2023

Hasil observasi yang dilakukan pada kelas XII IPA 1 di SMA Negeri 3 Ciamis ditemukan adanya beberapa peserta didik yang mendapat nilai ulangan dibawah KKM yang telah ditetapkan sekolah. Hal tersebut terjadi karena faktor dari peserta didik itu sendiri ataupun proses pembelajaran yang kurang menarik dan membosankan sehingga peserta didik menganggap biologi sebagai pelajaran yang sulit dan berakibat kurangnya motivasi dalam belajar. Penggunaan media Flash card pada mata materi Evolusi merupakan suatu gagasan baru yang diharapkan dapat membantu memberikan motivasi agar dapat meningkatkan akitivas dan hasil belajar peserta didik. Jenis penelitian yang digunakan adalah penelitian tindakan kelas yang terdiri dari 2 siklus. Setiap siklus terdiri dari tahap perencanaan, pelaksanaan, pengamatan, dan refleksi. Teknik pengumpulan data dan teknik analisis data yang digunakan adalah analisis data kuantitatif dari observasi peserta didik dan hasil tes. Aktivitas peserta didik mengalami peningkatan selama dua siklus, pada siklus I yaitu 57%, pada siklus II meningkat 71%. Hasil belajar peserta didik mengalami peningkatan persentase ketuntasan pada prasiklus yaitu 35%, pada siklus I yaitu 60% dan pada siklus II meningkat menjadi 80%. Dengan demikian dapat disimpulkan bahwa melalui penggunaan media flash card dapat meningkatkan aktivitas dan hasil belajar peserta didik pada materi evolusi.Kata Kunci: Aktivitas, Evolusi, Hasil Belajar, Media Flash Card
UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR SISWA MELALUI PENGGUNAAN MEDIA FORMULATOR TARSIA BERBASIS SCAFFOLDING PADA MATERI EVOLUSI KELAS XII SMAN 3 CIAMIS
Authors: Fitri Anne Novia , Warsono Warsono , Cahyadin Agus
Published: April 2023

Penelitian ini merupakan suatu penelitian tindakan kelas yang menggunakan dua siklus dengan tujuan untuk meningkatkan aktivitas dan hasil belajar siswa pada materi Evolusi di kelas XII IPA 3 SMA Negeri 3 Ciamis melalui penggunaan media Formulator Tarsia berbasis Scaffolding.  Subjek penelitian adalah siswa kelas XII IPA 3 SMA Negeri 3 Ciamis Semester Genap Tahun Pelajaran 2022/2023. Objek penelitian adalah aktivitas dan hasil belajar. Berdasarkan hasil observasi yang dilakukan pada siklus pertama, aktivitas belajar siswa yang meliputi indikator kegiatan visual, kegiatan lisan, kegiatan mendengarkan, kegiatan menulis, dan kegiatan motorik tergolong cukup baik dengan perolehan skor rata-rata 72% dan meningkat menjadi 80% yang tergolong kategori baik pada siklus kedua. Kemudian, hasil observasi belajar yang dilakukan pada siklus pertama tergolong cukup baik dengan perolehan skor rata-rata 66% dan meningkat menjadi 80% pada siklus kedua yang tergolong kategori baik. Dengan demikian, aktivitas dan hasil belajar siswa pada materi Evolusi dapat ditingkatkan dengan menggunakan media Formulator Tarsia berbasis Scaffolding.Kata Kunci: Formulator Tarsia, Scaffolding, Aktivitas belajar, Hasil belajar
Synthesis and Molecular Docking Studies of New Series of Bis-Schiff Bases Thiadiazoles Derived From Disulfides and Thioethers with Potent Antibacterial Properties
Authors: Hamad Hardi Q. , Taher Salam G. , Aziz Dara M.
Published: April 2023

Two new series of various heterocyclic bis-Schiff bases of Thiadiazoles disulfides and thioethers are synthesized. The first series was the synthesis of bis-Schiff of thiadiazole disulfides (4a-h) synthesized from their corresponding Schiff bases after oxidation by hydrogen peroxide. The second series was the synthesis of bis-Schiff base thiadiazole thioethers (7a-h). It was obtained from the reaction of bis-thiadiazole diamine (6) with different aldehyde. The diamine (6) was generated by reacting thiadiazole with dibromoethane in dimethylformamide and triethylamine as a catalyst. All of the synthesized compounds were analyzed by using FT-IR, 1H-NMR, 13C-NMR, and C-APT techniques. The synthesized compounds were screened against two gram-positive bacteria (Staphylococcus and streptococcus), and two strains of gram-negative (E. coli and klebsiella) in comparison to two standard strong antibiotic drugs (ciprofloxacin and vancomycin). Generally, all the synthesized compounds showed highly antibacterial properties, particularly, compounds (4b,4f, and 7b) which observed potent anti-bacterial properties against both gram- (positive, negative) bacteria were even higher than the standard drugs. Lastly, molecular docking studies were also applied to find the binding affinity and active sides of the products with the target proteins.
How the interlibrary loan service can collaborate with other libraries and university services
Authors: Opisso Isàvena
Published: April 2023

The Interlibrary Loan Service of the Universitat Autònoma de Barcelona has always been in constant renewal. In this paper, three new projects in collaboration with other university departments are analysed. These are (i) the analysis of interlibrary loan requests with the collection-management department; (ii) the uploading of public-domain documents in the repository with the institutional-repository department; and (iii) the digitization of PhD theses with the thesis department.
Patron-Driven Acquisition et Evidence-Based Acquisition
Authors: Favre Marion , Velasco Manon
Published: April 2023

Les modèles d'acquisition d'e-books basés sur l'utilisation comme le PDA et l'EBA sont aujourd'hui très répandus et permettent la mise à disposition de vastes collections que les bibliothèques n'ont pas réellement acquises. Un PDA d'Ebook Central a été mis en place en 2019 et un premier EBA de Wiley en 2021. La Bibliothèque de l'EPFL a testé ces modèles et a réalisé de nombreuses analyses pour en mesurer la pertinence après une ou plusieurs années, au regard des besoins de ses usager·ères. Les avantages et les limites de l'exploitation des statistiques d'usage dans le développement des collections ont également été mis en lumière dans cette étude. Ces deux modèles se sont révélés de bons compléments aux modèles d'acquisition dans lesquels les bibliothécaires de liaison effectuent la sélection. Tous deux allègent également considérablement ce travail de sélection, tout en augmentant les tâches de gestion et d'analyse du côté des bibliothécaires en charge des ressources électroniques. Le PDA a nécessité des ajustements au fil des années pour que les collections accessibles soient au plus près des domaines de l'EPFL. L'utilisation des titres acquis à travers ce modèle est globalement plus importante que celle des titres acquis par d'autres biais. En contrepartie le PDA présente un risque accru de générer des acquisitions à la popularité éphémère, malgré la mise en place d'un système de prêt avant l'achat définitif. Le programme d'EBA a révélé un intérêt des usager·ères pour des titres dont les sujets et les années de publication n'étaient pas forcément attendus. Ce modèle d'acquisition nécessite un gros investissement au niveau des analyses statistiques de la part des bibliothécaires chargé·es des ressources électroniques, mais les résultats de ces analyses permettent d'aller au-delà de la seule nécessité de sélection des titres au terme du programme d'EBA. Ces deux modèles nous ont amenés à nous interroger plus largement sur l'évolution du rôle de sélection des bibliothécaires, et sur la part de l'intervention humaine dans des modèles où les statistiques d'usage sont le matériau de départ pour la sélection.
International loans in the Main Library of AGH UST
Authors: Forma Karolina
Published: April 2023

Workflows and methods used in the Main Library of AGH UST changed with the challenging history of Poland and rapid changes in sourcing information for the Library's patrons and STEM professionals. The article describes this journey specifically from the point of view of the Interlibrary Loans Department. Since 1952 it has served hundreds of thousands of users domestically and outside of Poland, maintaining continuing relationships with its partners. The most important milestone in document delivery was in 2001, when the library started using IFLA Vouchers, which made managing loans much easier. Nowadays, in times of digitization and open access ILL is still important – as its core role is providing access to materials which often can seem unobtainable.
Discovery, synthesis and biological evaluation of a series of N-(phenylcarbamothioyl)-2-napthamides as inhibitors of Claudin-1
Authors: Hopkins Corey , Mashinson Viktoriya , Webster Thomas , Vadukoot Anish , Tolentino Kirsten , Simeon Princess , Fatima Iram , Dhawan Punita
Published: April 2023

Colorectal cancer (CRC) remains a leading cause of cancer-related deaths worldwide, despite advancements in diagnosis. The main reason for this is that many newly diagnosed CRC patients will suffer from metastasis to other organs. Thus, the development of new therapies is of critical importance. Claudin-1 protein is a component of tight junctions in epithelial cells, including those found in the lining of the colon. It plays a critical role in the formation and maintenance of tight junctions, which are essential for regulating the passage of molecules between cells. In CRC, claudin-1 is often overexpressed, leading to an increase in cell adhesion, which can contribute to the development and progression of the disease. Studies show that high levels of claudin-1 are associated with poor prognosis in CRC patients and targeting claudin-1 may have therapeutic potential for the treatment of CRC. Previously, we have identified a small molecule that inhibits claudin-1 dependent CRC progression. Reported herein are our lead optimization efforts around this scaffold to identify the key SAR components and the discovery of a key new compound that exhibits enhanced potency in SW620 cells.
Traumas acumulativos y productividad en las empresas
Authors: Henrich-Saavedra Marco A.
Published: April 2023

El artículo trata acerca de los traumas acumulativos como un factor que puede afectar en forma significativa la productividad de las empresas. El creciente número de casos hace necesario conocerlos y establecer las causas de su aparición. Los traumas acumulativos son los principales causantes de la pérdida de tiempo y productividad en la industria de hoy. Igualmente, muestra una relación de los traumas acumulativos más frecuentes en la industria, definiéndolos, estableciendo sus efectos en los trabajadores y señalando las tareas laborales que son consideradas como de alta incidencia en su aparición.
Mathematical Prediction of Production Performance of Water Flooding Oil Field using Growth Curves
Authors: Sai Kiran Koochimanchi , Upendra Singh Yadav , Vamsi Krishna Kudapa
Published: April 2023

The oil production and water cut prediction is one of the most interesting research area of the reservoir production performance analysis. In this research, the focus was to use the growth curve method, and the main reason behind selecting this particular method is that it has the advantages of the general water drive curve method. Also, the fast and simple calculation with fewer parameters and the combined solution model method, widely used in production prediction, are two advantages. There are two growth curves, i.e., 4W and 4Y4, and based on the analysis of these two model growth curves, a new generalized growth curve has been proposed for the well production performance. A new model will be developed that should be efficient and feasible in predicting cumulative oil production, annual oil production, and water cut at different oilfield development periods. So, this research will use software, a Matrix Laboratory (MATLAB) programme will be developed to derive the parameters of the new model that is to be proposed in this work. Two oil fields will be chosen for the test case of our new model to check its vitality when it is applied to the production data of the Samattalol and Daqing oilfields situated in China. The new model will predict the cumulative oil production, annual oil production, and water cut closer to the actual production data, and satisfactory results will be obtained according to our hope, which would showcase the reliability and practicability of the new model.
A Comparative Analysis of Major Desalination Processes
Authors: Kumargaurao D. Punase
Published: April 2023

The desalination process is used to reduce the salinity of water to meet the water demand in water-scarce regions. There are several methods available for water desalination, each with merits and demerits in terms of raw water treatment, process operations, and water quality management. In the present analysis, a systematic review of various desalination processes is presented based on technical, economic, and environmental analyses. Thermal and Reverse Osmosis (RO) processes are widely studied in the literature and used for Sea Water (SW) desalination on a larger scale to produce drinking water. The technical and economic criteria are used to show that Seawater Reverse Osmosis (SWRO) technology is better when compared to other desalination technologies.
Promoting the mental health of university students through educational video: experience report
Authors: Araújo Rocha Gabriela , Nascimento Vieira Júnior Denival , Kelly dos Santos e Silva Renata , Rubens Reges Brito Vicente , Rayane Leite Joyce , Victor Cordeiro da Costa Silva Emanuel , Larissa Gomes Machado Ana
Published: April 2023

Objetivo: relatar a experiência de graduandos em Enfermagem e Medicina na elaboração e divulgação de um vídeo motivacional como estratégia de promoção da saúde mental de estudantes universitários. Métodos: relato de experiência acerca da construção e divulgação de um vídeo produzido por discentes da Universidade Federal do Piauí, em setembro de 2019, voltado à promoção do bem-estar psicológico e emocional do público-alvo universitário. A temática escolhida englobou a valorização da vida, abordada na campanha “Setembro Amarelo”. Realizou-se uma pesquisa na literatura científica sobre as principais demandas psicológicas de universitários, em seguida, foram selecionados seis discentes com histórias de vida inspiradoras e seguiu-se para as etapas de criação do conteúdo, filmagens e divulgação do produto audiovisual. Resultados: os depoimentos trataram sobre as vivências pregressas à entrada na universidade, desafios na graduação, dificuldades financeiras, conquistas e superações. A experiência na construção do vídeo motivacional permitiu contemplar o quão particulares e diversos são os obstáculos e as superações para a formação no ensino superior. Conclusão: a elaboração do vídeo pelos universitários demonstrou-se uma experiência exitosa, pois transmitiu na película exemplos de apoio mútuo entre discentes que compartilham de demandas psicológicas semelhantes, com relatos de desafios e conquistas em prol da formação universitária.
Paths taken by future nurses for supplementary training in mental health
Authors: Silva John Victor dos Santos , Barros Alice Correia , Loureiro Yasmin Maciel Ramos , Brandão Thyara Maia , Ribeiro Mara Cristina , Santos Ronildo Alves dos
Published: April 2023

Objetivo: Descrever os caminhos percorridos pelos futuros enfermeiros na busca por complementar a formação em saúde mental. Métodos: Estudo descritivo-exploratório, com abordagem qualitativa, realizado de setembro de 2020 a maio de 2021, com 36 estudantes, por meio de entrevista semiestruturada, utilizando como recurso tecnológico o aplicativo WhatsApp®. Os achados foram analisados à luz da técnica de Análise de Conteúdo de Bardin e discutidos com a literatura científica sobre a temática. Resultados: A necessidade de complementação e aperfeiçoamento na formação em saúde mental acontece devido a disciplina ter pouca carga horária, conteúdos superficiais e poucas atividades práticas nos serviços de saúde mental. A busca também se dá pela afinidade com a área e o desejo de especializar para trabalhar no campo da saúde mental. As estratégias mais utilizadas são ligas acadêmicas, projetos de extensão, iniciação científica e participação em grupos de estudos. Considerações Finais: Embora configurem espaços de protagonismo para os estudantes, a busca por atividades complementares revela a fragilidade da formação nas disciplinas e que essa estratégia é escolhida apenas pelos estudantes que possuem afinidade com o campo de atuação.
Epidemiological profile of leprosy in a municipality of northeastern Brazil in the face of the challenges of those affected
Authors: Anjos Monaliza Sousa dos , Campelo Viriato
Published: April 2023

Objective: To characterize through data obtained from secondary sources the epidemiological profile of leprosy patients in Teresina, Piauí, from 2017 to 2021 in relation to challenges such as disabilities, involvement in children and the rate of deaths related to leprosy.  Methods: This is an observational, analytical study of the ecological type, through data from the Notifiable Diseases Information System (SINAN). The variables gender, gender, age, schooling, endemicity index, Physical Disability Degree (DPD), clinical forms and deaths were investigated, through the chi-square test, the Shapiro-wilk test and the odds ratio calculation.  Results: There was predominance of the clinical and epidemiological profile with predominantly male gender, color/mixed race, with educational level up to high school, with dimorphous clinical characteristics, however without predominant reactions, but with high DPD Index I.  Conclusion: Through the data collected in SINAN it was possible to identify that the population of Teresina currently faces challenges regarding the detection of leprosy in children, is oscillating parameters between hyperendemic and very high endemicity, 9% of the affected population developed some DPD and deaths with higher prevalence were identified in the elderly, however, a scarcity of large number of information from SINAN was observed.
Nutritional guidance for the prevention of type 2 diabetes mellitus in a rural community: experience report
Authors: Souza Jaionara Almeida de , Lima Angélica de Godoy Torres , Cordeiro Jéssica Kelly Ramos
Published: April 2023

Objective: To describe the experience lived through the provision of a nutritional guidance action for the prevention of type 2 diabetes mellitus in a rural community. Methods: Experience report of a nutritional guidance action carried out in a rural community in Rio Grande do Norte. To perform the action, the following flow was adopted: reception and welcoming of users; screening and explanation of the services that would be offered; anamnesis and health assessment by the multidisciplinary team and; nutritional guidelines, according to the needs of the participants. Results: Of the 18 individuals who underwent the fasting blood glucose test, six showed significant glycemic changes, being them directed to individual nutritional guidance for a more specific conduct. The guidelines were carried out in an objective and accessible way by a nutritionist, who explained what should be avoided and what to choose in the diet so that glycemic balance, control and maintenance of health could be achieved. Conclusion: The experience was relevant for users and the local health team, who were given support in the mapping of cases of chronic diseases that often act silently. The need for a nutrition professional for continuity of care was also identified.
Emotional regulation, disease perception and treatment adherence in Brazilians with arterial hypertension: a cross-sectional study
Authors: Almeida Isabel Nana Kacupula de , Sousa Katarina Milly Pinheiro de , Araujo Eduarda Maciel de , Oliveira Andressa Suelly Saturnino de
Published: April 2023

Objetivo: Descrever a regulação emocional, a percepção da doença e a adesão ao tratamento de brasileiros diagnosticados com hipertensão arterial. Método: Estudo transversal. A coleta ocorreu com 30 participantes, através de um questionário eletrônico, divulgado em redes sociais, com a versão brasileira do Difficulties in Emotion Regulation Scale, versão brasileira do Questionário de Percepção de Doenças Versão Breve e Questionário de Adesão ao Tratamento da Hipertensão Arterial Sistêmica. Foram realizadas análises descritivas por meio do software IBM SPSS Statistics versão 25. Resultados: A média do somatório do instrumento de regulação emocional foi 81,4 ± 20,9. Sobre o instrumento de percepção da doença, a dimensão da eficácia do tratamento teve menor média (1,2 ± 1,9) e o instrumento de adesão ao tratamento anti-hipertensivo teve a média de 92,9 ± 6,9. Conclusão: Os participantes demonstraram ter maior dificuldade em se concentrar e realizar tarefas ao experimentar emoções negativas, percebem o tratamento com pouca relevância para a ameaça da doença e deixam de tomar a medicação, nos horários estabelecidos, ao menos uma vez por mês.
Global School-Based Student Health Survey 2016-Bahrain: Mental health
Authors: Haji Eman , Jamsheer Fatema , Jassim Ghufran , Sabt Ashwaq , AlSabagh Amani Abdulla , Nasar Lama Mahmood , Hassan Khadija Ebrahim , Nuhaily Ebtisam
Published: April 2023

Background: The Global school-based student health survey (GSHS) was developed to help countries measure and assess students' health behaviors and protective factors. This report discusses results from the first GSHS carried out in Bahrain during 2015-2016 by the Ministry of Education in collaboration with World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC). Methods: The GSHS includes students aged 13-17 years and employed a two-stage sample design involving a school and class level. 64 public and private schools were sampled out of 162 schools, and 320 classes of students in grades 7-11 were selected. Students completed a questionnaire addressing mental health, protective factors, sexual behaviors, violence, and unintentional injury. Results: 7,143 (89%) of the 8,068 sampled students completed the questionnaire. Of the students who responded, 3,685 (51.1%) were males, and 5,843 (84.5%) were between the ages of 13 to 17 years old. 27.2% of students were physically attacked, 41.4% were in a physical fight, and 28.6% were bullied one or more times during the past 12 months. 38.1% of the students never or rarely wore a seatbelt when in a car, and 30.7% never or rarely wore a helmet when riding a bicycle. 16.2% of students felt lonely most of the time or always, and 15.2% seriously considered attempting suicide during the past 12 months. Conclusion: The study reported rates of violence, physical fights, bullying, and unsafe practices among school-Age children. Raising awareness regarding mental health and emotional well-being, assessment and support among school children is vital. Keywords: Bahrain, Mental health, School, School health, WHO