bluuebunny/crossref_metadata_2025 huggingface dataset:
Modifikasi Biofoam Berbasis Pati Singkong dengan Serat Eceng Gondok dan Variasi Konsentrasi Plasticizer
Authors: Hutagalung Sarawinda , Sibarani James , Pramesti Resia Yoan , Puspaningtya Theresia Hellen Renata
Published: September 2024

Biofoam is a plant-based alternative packaging. The biofoam was prepared by using the extrusion method and baking process. This research aims to determine the lowest ratio of PVA and glycerol in absorbing water and testing the mechanical properties of biofoam (tensile strength, biodegradation test and FTIR analysis. The best biofoam composition in absorbing water was obtained at a ratio of PVA: glycerol 8%. The results of biofoam characteristics obtained by the water absorption test were 9.76%, maximum bending strength was 9.20 MPa and biofoam can be degraded 100% on day 15. The results of FTIR analysis showed the presence of absorption spectra at wave numbers 3410,15 cm-1, which is a typical region of O-H functional groups (strong and broad) carbohydrates and polyphenols. Modification of starch with fiber and plasticizer in research improves the physicochemical characteristics of biofoam in terms of increasing water absorption and biofoam biodegradation. In contrast, in terms of mechanical properties, the bending strength of biofoam requires further research referring to the characteristics of biofoam mechanical properties toward SNI standards.
Fitoremediasi Air Tercemar Nikel (Ni) dan Merkuri (Hg) Menggunakan Tanaman Azolla filiculoides Lam.
Authors: Rudy Sri Utami , Harso Wahyu , Ramadanil  , Iqbal Moh. , Prismawiryanti
Published: September 2024

Water pollution from settlements, agriculture, and industry is a significant issue, as it introduces pollutants like heavy metals into water bodies, harming both humans and aquatic ecosystems. Phytoremediation is a cost-effective, eco-friendly technology for reducing heavy metals in water bodies. This study aimed to assess Azolla filiculoides plants' ability to absorb heavy metals nickel and mercury. The plants were grown in a hydroponic solution contaminated with 0.25 ppm of nickel and 0.5 ppm of mercury. The growth of the plants was measured based on their wet and dry weight, and the nickel and mercury content in the plant tissue was analyzed using Atomic Absorption Spectrophotometry (AAS). The study found that the growth of A. filiculoides plants was unaffected by the concentration of either nickel or mercury. The amount of nickel absorbed by the plants was 0 µg/g plant dry weight, while for mercury, it was 1654.82 µg/g. Based on the results, A. filiculoides plant is more promising for use as a phytoremediation agent for water bodies contaminated with mercury heavy metals rather than nickel heavy metals.
Exploring how video conferencing impacts students' cognitive, emotional, and behavioral engagement
Authors: Hastomo Tommy , Kholid Muhammad Fikri Nugraha , Muliyah Pipit , Septiyana Linda , Andewi Widi
Published: September 2024

Video conferencing has become an essential tool in the realm of education, offering educators a plethora of features to enhance student learning. This study delved into the comparative impact of video conferencing and Learning Management Systems (LMS) on student engagement in online education. The primary objective was to discern the most effective mode of communication for fostering student engagement in online learning, examining cognitive, emotional, and behavioral dimensions of engagement. The researchers used a quasi-experimental design with a historical cohort control group to compare the effectiveness of Zoom and Moodle (LMS) on student engagement. The study involved English education students from a private university in Indonesia, with 20 students in each group. Data collection included recording online interactions, conducting semi-structured interviews, and administering a Likert-style survey. Data analysis involved content analysis, thematic analysis, and the Mann-Whitney U test. The findings underscored the advantages of utilizing Zoom, particularly in nurturing interpersonal relationships among students. Notably, the platform enhanced intimacy and interactivity within the learning environment, bolstering students' intrinsic motivation. Moreover, indicators such as creativity and idea exchange pointed towards heightened cognitive engagement facilitated by Zoom. Additionally, Zoom emerged as a practical tool for fostering social interaction and stimulating higher-order thinking during discussions. Consequently, these results provide compelling evidence supporting the integration of Zoom to enrich learning experiences and promote deeper engagement among students, both practically and theoretically.
Enhanced Thomson and Unusual Nernst Coefficients in 1T-TiSe2 due to Bipolar Transport and CDW Phase Transition
Authors: Akhanda Md Sabbir , Dharmasiri Kusal Sachithra , Louca Despina , Zebarjadi Mona
Published: September 2024

Thermoelectric coolers utilizing the Peltier effect have dominated the
field of solid-state cooling but their efficiency is hindered by
material limitations. Alternative routes based on the Thomson and Nernst
effects offer new possibilities. Here, we present a comprehensive
investigation of the thermoelectric properties of 1T-TiSe2, focusing on
these effects around the charge density wave (CDW) transition (≈ 200 K).
The abrupt Fermi surface reconstruction associated with this transition
leads to an exceptional peak in the Thomson coefficient of 450 μV.K−1 at
184 K, surpassing the Seebeck coefficient. Furthermore, 1T-TiSe2
exhibits a remarkably broad temperature range (170 − 400 K) with an
average Thomson coefficient exceeding 190 μV.K−1, a characteristic
highly desirable for the development of practical Thomson coolers with
extended operational ranges. Additionally, the Nernst coefficient
exhibits an unusual temperature dependence, increasing with temperature
in the normal phase, which we attribute to bipolar conduction effects.
The combination of solid-solid pure electronic phase transition to a
semimetallic phase with bipolar transport is identified as responsible
for the unusual Nernst trend and the unusually large Thomson coefficient
over a broad temperature range.
Task-irrelevant Working Memory Representations Saved by Conflicts between Endogenous versus Exogenous Factors
Authors: Jiejie Liao , Zhang Muxian , Zhang Manqi , Peng Jun , Chen Yujie , Mo Lei
Published: September 2024

Maintaining task-relevant information in working memory (WM) while
preventing distraction from task-irrelevant information is essential for
adaptive behavior. However, whether the task-irrelevant information is
removed or retained in WM remains debated. This study addressed this
controversy across two experiments employing a retrospectively cueing
(retro-cue) paradigm that examined simultaneous influence from
endogenous and exogenous factors on internal representations. Behavioral
results showed that retro-cues aligning endogenous and exogenous factors
enhanced the retention for task-relevant information but negatively
impacted memory for task-irrelevant information. Conversely, retro-cues
that created conflicts between the two factors improved memory
performance for task-irrelevant information whereas sacrificed memory
for task-relevant information, in a way similar with retro-cues that
merely involved exogenous factors. Results of event-related potentials
(ERPs) provided direct evidence for the fate of task-irrelevant WM
information via the component of contralateral delayed activity (CDA).
ERP results of CDA suggested that task-irrelevant information was
dropped out of WM when endogenous and exogenous factors were aligned,
but was maintained in WM either when the two factors were in conflicts,
or when there was only the exogenous influence. To conclude, this study
suggested that task-irrelevant information was saved from being removed
out of WM when there were conflicts between endogenous and exogenous
factors, in a way similar with that when there was only exogenous
influence.
Soil mutualists facilitate the population persistence of an endemic plant outside its historic elevation range.
Authors: Collins Courtney , Dinwiddie Devin , Pombubpa Nuttapon , McGuire Krista , Spasojevic Marko J.
Published: September 2024

Aim: Here we report on a long-term transplant study of a serpentine
endemic plant where individuals were transplanted into cooler macro- and
microclimatic refugia (i.e. higher elevations and north-facing aspects)
in locations outside of its current range. We asked: 1) Did transplanted
populations persist outside of their current range in micro- (cooler
aspects) or macro- (higher elevations) climatic refugia? and 2) Was
population persistence in climatic refugia helped or hindered by soil
microbial communities? Location: Siskiyou Mountains of southwestern
Oregon (USA) Taxon: Horkelia sericata (Rosaceae), Angiosperms Mycota
(Fungi) Monera (Bacteria) Methods: At each transplant site, we counted
surviving individuals (noting reproductive status) and then collected
soil from both the rhizosphere of transplanted individuals and from an
equal number of areas of nearby bare soil with no plants. Soil bacterial
and fungal communities were assessed using next generation sequencing of
16S and ITS-1 marker genes Results: Of the 15 initial transplant sites,
one (high elevation) site displayed population persistence (i.e.,
‘successful’ site), defined as having surviving individuals with
reproductive success. Four sites had surviving individuals but no
reproductive success (i.e., ‘unsuccessful’ sites); the remaining 10
sites had no surviving individuals and were excluded from microbial
analyses. The successful site had distinct soil fungal and bacterial
community composition and a higher mututalist:pathogen ratio than the
unsuccessful sites. Additionally, the mututalist:pathogen ratio did not
differ between Horkelia’s rhizosphere and bare ground at the successful
site, suggesting that the persistence of this population was enhanced by
soil mutualists that were already present at that site. Main
conclusions: Taken together, these results highlight that the success of
species range shifts into climatic refugia may be influenced by the
presence of suitable soil mutualists, emphasizing the need to consider
soil microbial communities in future ra
Hollaender Award 2023: Adventures in applied genetic toxicology
Authors: Elespuru Rosalie K.
Published: September 2024

I am honored to receive the 2023 Hollaender Award, for achievements in
“application of the principles and techniques of environmental
mutagenesis to the protection of human health”. People may assume that
a career in applied science might not be as exciting or impactful as
basic research. I hope my career “adventures” into environmental
science, carcinogen investigations and photobiology, as well as
publications in Nature and Science, will counter this assumption. The
narrative is described in terms of “mentors” whose advice had a
lasting impact: “come early and work hard” (meanwhile, have fun); “
think instead of/while screening” (i.e. performing mundane tasks);
“avoid the big boo-boo”; “just go in the lab and do experiments”;
“become an expert”. Many of the most critical events in science and in
life are “random”, as demonstrated by accidental adventures that led
to scientific as well as life-altering personal realizations. Adventures
included forays into nitrosamine mutagenicity, nanomaterial assessment,
germ cell mutagenic risk, bacterial mutagenicity assays, genotoxicity of
cell phone radiation, personalized cancer prevention, and >25
years in regulatory safety assessment at FDA: review of genotoxicity
data, experiments in the lab, and collaboration with others to foster
better analyses of DNA damaging agents, generally in relation to cancer
risk. Finally, with my work and that of my lifelong tripmate William
Lijinsky as models, I suggest that a “non-hypothesis driven”,
open-ended approach to research can be path-breaking and forefront.
Regionalized Determinants of Dryland Forest Gross Primary Productivity
Authors: Li Xuan , Dong Xiaoxue , He Xiao , Chen Ning , Zhao Changming
Published: September 2024

Ecosystems may exist in alternative stable states and thereby extremely
differ in ecosystem structure and functions, including gross primary
productivity (GPP), which is crucial for assessing an ecosystem’s
ability to capture atmospheric carbon dioxide, especially under the
context of climate change. This study applied alternative stable states
theory to evaluate GPP in global dryland forests, and analyzed
multi-year average GPP data alongside environmental factors such as the
Aridity Index and mean annual precipitation. Here, we found the
existence of alternative stable states of GPP along the aridity
gradient. Mean GPP were 893.12 gC/m²/year and 1539.86 gC/m²/year under
lower and higher branches of alternative stable states, respectively,
compared to the current mean value of 1203.02 gC/m²/year. Notably, we
observed striking regional disparities in GPP, with Africa and Oceania
predominantly in the higher alternative stable state, while North
America and Asia were in the lower alternative stable state. However,
GPP along mean annual precipitation did not exhibit alternative stable
states, but a significant variation during the medium range of mean
annual precipitation (241-402 mm year-1). The relationships between GPP
data and environmental factors were consistent across different forest
types. This study sheds light on dryland forest productivity and
indicates adaptive management strategies that should be used to bolster
ecosystem function in the context of climate change.
Kecerdasan Emosional dan Efikasi Diri terhadap Prestasi Belajar Matematika Siswa Kelas VI SD
Authors: Nyoman Arysta Agustini  , I Made Candiasa  , Ida Bagus Putu Arnyana
Published: September 2024

Sebagian besar siswa masih kesulitan dalam belajar matematika karena motivasi belajar siswa masih rendah, stres yang tidak terkendali, ketidakpercayaan diri, serta kesulitan dalam berkomunikasi dan berinteraksi dengan teman sekelas berserta guru mereka. Tujuan penelitian ini yaitu untuk menganalisis kecerdasan emosional terhadap prestasi belajar matematika siswa kelas VI SD. Metode penelitian yang digunakan dalam penelitian ini adalah metode survei kausal dengan teknik analisis SEM (Structural Equation Modeling). Populasi dalam penelitian ini yaitu semua siswa kelas VI SD dengan jumlah 259 peserta didik. Pengambilan sampel dalam penelitian ini menggunakan teknik proportional random sampling. Metode pengumpulan data dengan metode tes dan non tes. Teknik analisis data dengan analisis kuantitatif dan kualitatif. Hasil yang diperoleh menunjukkan bahwa keceerdasan emosional, efikasi diri, dan pengaruh kecerdasan emosional terhadap efikasi diri secara berturut-turut memiliki nilai Standardized Regression Weight sebesar 0,684, 0,232, dan 0,673 dengan nilai probabilitas statistic sebesar 0,000 kurang dari 0,05. Berdasarkan hasil analisis dapat disimpulkan bahwa kecerdasan emosional dan efikasi diri berpengaruh secara signifikan terhadap prestasi belajar matematika siswa kelas VI SD. Implikasi dari penelitian ini adalah pentingnya pembinaan kecerdasan emosional dan pengembangan efikasi diri dalam konteks pembelajaran matematika di SD.
Minat dan Hasil Belajar IPA Siswa Kelas V SD dengan Model Problem-Based Learning Berbasis TPACK
Authors: Ida Ayu Dian Citra Dewi  , I Made Candiasa  , Ida Bagus Putu Arnyana
Published: September 2024

Rendahnya minat dan hasil belajar menyebabkan siswa sulit untuk maju dan berkembang. Penelitian ini bertujuan untuk menganalisis model PBL berbasis TPACK terhadap minat dan hasil belajar IPA siswa. Penelitian ini merupakan penelitian eksperimen semu dengan rancangan posttest only control group design. Populasi penelitian ini adalah seluruh siswa Kelas V Gugus VIII sebanyak 7 sekolah sejumlah 226 siswa dan 2 kelas dalam 2 sekolah sekolah dipilih sebagai sampel yang ditentukan dengan teknik random sampling. Data penelitian diperoleh dengan metode tes berupa pilihan ganda dan non-tes berupa kuisioner yang telah diuji kelayakannya sebagai alat ukur. Data dianalisis menggunakan analisis deskriptif dan inferensial (Anava dan Manova). Hasil Penelitian menunjukkan bahwa secara simultan terdapat perbedaan minat belajar IPA dan hasil belajar IPA siswa antara kelompok dengan model pembelajaran PBL berbasis TPACK dan kelompok dengan model pembelajaran konvensional (F samadengan 227,846, p kurang 0,05). Terdapat perbedaan minat belajar IPA antara kelompok dengan model pembelajaran PBL berbasis TPACK dan kelompok dengan model pembelajaran konvensional (F samadengan 244,408, p kurang 0,05). Terdapat perbedaan hasil belajar IPA siswa antara kelompok dengan model pembelajaran PBL berbasis TPACK dan kelompok dengan model pembelajaran konvensional (F samadengan 20,739, p kurang 0,05). Disimpulkan bahwa model Problem-based Learning (PBL) berbasis TPACK mampu mempengaruhi minat dan hasil belajar IPA siswa kelas V SD. Penelitian ini berimplikasi pada bidang pendidikan dan penelitian bahwa apabila menemukan masalah serupa dapat menggunakan solusi yang sama.
Media Video Pembelajaran Berbasis POWTOON Pada Materi Rangkaian Listrik untuk Meningkatkan Hasil Belajar Siswa
Authors: I Komang Pradika Utama  , I Wayan Suastra  , Ketut Suma
Published: September 2024

Kurangnya inovasi dalam pembelajaran yang menarik terkhusus pada materi rangkaian listrik untuk meingkatkan hasil belajar Siswa kelas VI Sekolah dasar menjadi tantangan bagi tenaga pendidik. Tujuan dari penelitian ini adalah menciptakan media video pembelajaran berbasis Powtoon pada materi Rangkaian Listrik untuk meningkatkan hasil belajar siswa kelas VI SD yang valid, praktis dan efektif. Penelitian pengembangan ini menggunakan model ADDIE. Subjek penelitian terdiri dari 2 ahli materi, 2 ahli media, 4 guru dan 20 siswa. Metode pengumpulan data dengan angket. Metode analisis data dengan analisis kuantitatif dan kualitatif. Hasil penelitian menunjukkan hasil validitas ahli materi diperoleh nilai rata-rata 4,50 dengan kriteria sangat tinggi, sedangkan nilai rata-rata 4,44 dengan kriteria sangat tinggi dari ahli media, validator kepraktisan guru mendapat skala daya tarik, skala kejelasan, skala ketepatan dan skala kebaruan mencapai nilai rata-rata dengan kategori excellent. Setelah itu, validator kepraktisan dilakukan siswa SD mendapat hasil pada skala daya tarik, skala kejelasan, skala ketepatan dan skala kebaruan mencapai nilai rata-rata dengan kategori excellent. Dan pengujian untuk efektifitas produk terhadap hasil belajar diperoleh dari hasil uji n-Gain yang menunjukkan rata-rata 0,71 dengan kriteria efektif. Simpulan bahwa media video pembelajaran berbasis Powtoon terbukti valid, praktis dan efektif meningkatkan hasil belajar siswa. Implikasi penelitian ini adalah terciptanya produk sebagai media belajar dan menjadi solusi apabila ada masalah terkait hasil belajar siswa.
E-Book Berbasis Problem Based Learning Mampu Meningkatkan Kemampuan Berpikir Kritis Siswa Kelas V pada IPAS
Authors: I Putu Trisna Angga Semara  , I Made Ardana  , Ni Ketut Suarni
Published: September 2024

Kemampuan berpikir kritis siswa tergolong rendah yang diakibatkan kurang adanya inovasi pada strategi pembelajaran. Permasalahan tersebut dapat diatasi dengan inovasi bahan ajar seperti e-book dengan tetap mengedepankan keaktifan siswa. Tujuan penelitian ini adalah untuk mengembangkan produk inovatif e-book berbasis PBL untuk meningkatkan kemampuan berpikir kritis siswa. Penelitian ini berjenis penelitian dan pengembangan (R&D) dan menerapkan ADDIE sebagai model pengembangan. Data diperoleh dengan metode non-tes kuesioner dan tes pilihan ganda yang telah diuji kelayakannya. Data dianalisis dengan formula Gregory dan uji-t berkorelasi sehingga penelitian ini menggunakan model one grup pretest-posttet. Hasil analisis data diperoleh ahli materi diperoleh skor 93,74 dengan kualifikasi sangat baik. Ahli media pembelajaran diperoleh skor 92.70 dengan kualifikasi sangat baik. Hasil kepraktisan oleh guru diperoleh skor 90,25 dengan kualifikasi sangat baik. Kepraktisan oleh guru diperoleh sko 95,41 dengan kualifikasi sangat baik. Hasil uji efektifitas menunjukkan hasil bahwa produk sangat mempengaruhi kemampuan berpikir kritis siswa. Disimpulkan bahwa E-Book Berbasis Problem Based Learning memperoleh predikat layak, praktis, dan efektif mempengaruhi kemampuan berpikir kritis pada mata pelajaran IPAS  kelas V SD. Penelitian ini berimplikasi pada kemajuan pendidikan karena berkontribusi menciptakan bahan ajar inovatif yang berdampak langsung pada siswa selama pembelajaran tidak hanya berpikir kritis saja.
Video Animasi berbasis Discovery Learning Efektif Meningkatkan Kompetensi Pengetahuan IPAS
Authors: Pratiwi Dewa Ayu Diana , Agung Anak Agung Gede , Ambara Didith Pramunditya
Published: September 2024

Adanya keterbatasan waktu dan kurangnya pemahaman guru terkait pengembangan media pembelajaran, sehingga media pembelajaran yang biasanya digunakan hanya berupa video yang diunduh atau ditayangkan melalui youtube. Penelitian ini bertujuan untuk menciptakan video animasi berbasis discovery learning untuk meningkatkan kompetensi pengetahuan IPAS. Penelitian pengembangan ini menggunakan model pengembangan ADDIE. Subjek uji ahli adalah 1 ahli rancang bangun, satu orang ahli isi pembelajaran, satu orang ahli desain dan ahli media. Subjek uji coba perorangan, uji coba kelompok kecil, dan uji efektivitas produk melibatkan siswa kelas IV sekolah dasar. Metode pengumpulan data menggunakan kuesioner dan tes objektif. Teknik analisis data menggunakan deskriptif kuantitatif dan statistik inferensial. Hasil penelitian menunjukkan rancang bangun berdasarkan penilaian ahli rancang bangun dengan persentase 90,90% dengan kualifikasi sangat baik, kualitas video animasi berdasarkan uji ahli isi muatan pelajaran persentase 93,33% dengan kualifikasi sangat baik, uji ahli desain instrusional persentase 90,62% dengan kualifikasi sangat baik, uji ahli media pembelajaran persentase 90% dengan kualifikasi sangat baik, uji coba perorangan persentase 92,5% dengan kualifikasi sangat baik dan uji coba kelompok kecil persentase 91,66% dengan kualifikasi sangat baik. Hasil uji-t diperoleh thitung (26,790) lebih besar daripada ttabel (2,131) untuk db 15 dan taraf signifikan 5%, sehingga H1 diterima. Simpulan penelitian menunjukkan bahwa media Video Animasi Berbasis Discovery Learning efektif digunakan pada Materi Bagian Tubuh Tumbuhan Mata Pelajaran IPAS pada siswa kelas IV SD. Implikasi penelitian ini adalah memberikan motivasi bagi guru untuk menggunakan media pembelajaran sesuai dengan karakteristik dan kebutuhan belajar.
Model Pembelajaran Problem Solving Berbantuan Permainan Mino Card terhadap Berpikir Kritis pada Pembelajaran Matematika
Authors: Gangga Dewi Putri Ayu , I Wayan Wiarta  , M. G. Rini Kristiantari
Published: September 2024

Model pembelajaran yang kurang bervariatif menyebabkan suasana pembelajaran menjadi pasif karena lebih sering menggunakan pendekatan saintifik. Selain itu, sarana dan prasarana yang terdapat di sekolah belum dimanfaatkan dengan baik sehingga dapat pula menyebabkan pembelajaran kurang kondusif dan siswa kurang termotivasi dalam pembelajaran. Tujuan penelitian ini untuk menganalisis model pembelajaran problem solving berbantuan permainan Mino Card terhadap berpikir kritis pada pembelajaran matematika siswa kelas IV SD. Jenis penelitian yang digunakan adalah quasi ekperimen dengan desain penelitian yaitu nonequivalent control group design dan metode yang digunakan adalah tes. Populasi dalam penelitian ini berjumlah 240 dari 7 sekolah dasar. Teknik analisis menggunakan analisis kuantitatif dan kualitatif. Hasil penelitian ini menunjukkan uji-t diperoleh thitung 4,062 sedangkan nilai ttabel pada taraf signifikansi 5% menunjukkan nilai ttabel sebesar 2,000. Perolehan hasil analisis thitung  4,062 lebih dari ttabel  2,000 maka Ho ditolak. Dapat disimpulkan terdapat perbedaan yang signifikan kemampuan berpikir Matematika antara kelompok yang dibelajarkan menggunakan model problem solving dengan kelompok yang dibelajarkan dengan pembelajaran konvensional pada kelas IV SD. Implikasi penelitian ini yaitu model problem solving berbantuan permainan Mino Card baik diterapkan dalam proses pemeblajaran dan juga berpengaruh terhadap kemampuan berpikir kritis matematika siswa kelas IV SD.
Implementasi Model Project Based Learning: Dampaknya terhadap Sikap Nasionalisme dan Prestasi Belajar IPS
Authors: Made Bagiada  , Nyoman Dantes  , Sariyasa
Published: September 2024

Aktivitas belajar yang terpusat pada guru (teacher centered) berdampak pada rendahnya ketercapaian nilai mata pelajaran Ilmu Pengetahuan Sosial (IPS), rendahnya sikap nasionalisme siswa yang ditinjau dari sikap siswa yang suka bercanda ketika menyanyikan lagu wajib nasional, sikap kurang sempurna ketika hormat kepada sang saka merah putih, dan tidak memiliki rasa saling tolong menolong dalam mengerjakan tugas. Kajian ini bermaksud untuk mencari tahu 1) perbedaan hasil belajar IPS; 2) perbedaan sikap nasionalisme, 3) perbedaan hasil belajar IPS dan sikap nasionalisme secara simultan antara kelompok siswa. Jenis penelitian ini adalah eksperimen semu dengan rancangan nonequivalent post-test only control group design. Populasi kajian ini berjumlah 231 siswa. Sampelnya ialah siswa kelas V sekolah dasar sejumlah 46 orang. Data penelitian dalam bentuk hasil belajar IPS diperoleh melalui tes obyektif dan sikap nasionalisme diperoleh melalui kuesioner. Validasi pada instrumen hasil belajar mempergunakan formulasi Gregory, rumus korelasi Point Biserial, rumus KR-20, taraf kesukaran, dan daya beda. Validasi pada instrumen sikap nasionalisme menggunakan rumus Gregory, rumus korelasi Product Moment, dan Alpha Cronbach. Data yang telah dihimpun dianalisa mempergunakan Test of Between-Subjects Effects dan analisis MANOVA. Hasil penelitian menyatakan terdapat perbedaan hasil belajar IPS dan sikap nasionalisme secara parsial maupun simultan antara kelompok siswa.
Komik Digital Berbasis Masalah untuk Meningkatkan Hasil Belajar IPAS Siswa Kelas V SD
Authors: Mardiana I Nyoman Aditya , Anak Agung Gede Agung
Published: September 2024

Terbatasnya variasi media pembelajaran digital yang dimiliki guru untuk menunjang proses pembelajaran berdampak pada rendahnya hasil belajar IPAS siswa. Penelitian ini bertujuan untuk mengembangkan komik digital berbasis masalah mata pelajaran IPAS. Penelitian pengembangan komik digital ini menggunakan model pengembangan ADDIE (Analyze, Design, Development, Implementation, Evaluation). Metode pengumpulan data yang digunakan adalah metode kuesioner dan tes. Data tersebut dianalisis menggunakan teknik analisis deskriptif kuantitatif dan analisis statistik inferensial uji-t. Hasil penelitian pengembangan ini menyimpulkan bahwa komik digital berbasis masalah yang dikembangkan layak dan efektif untuk digunakan dalam proses pembelajaran dibuktikan dari hasil uji ahli rancang bangun diperoleh skor 90,90% (sangat baik), ahli materi pembelajaran diperoleh skor 100% (sangat baik), ahli desain pembelajaran dan ahli media pembelajaran diperoleh skor 97,50% (sangat baik), uji perorangan diperoleh skor 93,33% (sangat baik), uji kelompok kecil diperoleh skor 89,72% (baik), serta hasil uji efektivitas produk menunjukkan bahwa terdapat perbedaan yang signifikan sebelum dan sesudah menggunakan media komik digital berbasis masalah. Dengan demikian dapat disimpulkan bahwa produk media komik digital berbasis masalah layak dan efektif untuk diterapkan pada mata pelajaran IPAS (Ilmu Pengetahuan Alam dan Sosial), khususnya pada materi Indonesiaku kaya hayatinya kelas V SD.
Komik Digital Berbasis Problem Based Learning pada Muatan IPAS Materi Kekayaan Budaya Indonesia
Authors: I Made Surya Artanegara  , Anak Agung Gede Agung  , Didith Pramunditya Ambara
Published: September 2024

Banyak pendidik masih belum menggunakan media pembelajaran yang sesuai dengan karakteristik gaya belajar siswa, dan kurangnya pemahaman teknologi menyebabkan minimnya penggunaan media pembelajaran berbasis digital. Hal ini menyebabkan pembelajaran menjadi satu arah, serta membuat siswa jenuh dan kurang aktif. Penelitian ini bertujuan untuk menciptakan media komik digital berbasis problembased learning muatan IPAS kekayaan budaya Indonesia siswa kelas IV SD. Jenis penelitian ini adalah penelitian pengembangan dengan mengadaptasi model ADDIE. Subjek uji coba menggunakan 24 siswa. Metode pengumpulan data yang digunakan adalah metode kuesioner dan tes. Sedangkan instrumen yang digunakan adalah tes pilihan ganda dan lembar kuesioner. Setelah data dikumpulkan kemudian dianalisis menggunakan teknik analisis deskriptif kuantitatif dan analisis statistik inferensial uji t. Hasil uji-t menunjukkan bahwa terdapat perbedaan signifikan sebelum dan sesudah belajar menggunakan media komik digital. Sehingga dapat disimpulkan bahwa media komik digital berbasis problem based learning efektif digunakan dalam proses pembelajaran muatan IPAS materi kekayaan budaya Indonesia siswa kelas IV SD. Implikasi penelitian ini yaitu penggunaaan media komik digital mendorong minat baca siswa dan meningkatkan keinginan mereka untuk berliterasi.
Penerimaan Diri dan Kesejahteraan Subjektif pada Guru Honorer
Authors: Pamungkas Destariza Akbar Dwi , Doddy Hendro Wibowo
Published: September 2024

Kesejahteraan merupakan suatu impian dan harapan bagi setiap orang diseluruh dunia, begitu juga bagi seorang guru honorer di Indonesia. Guru PNS dan guru honorer memiliki tugas yang sama, tetapi terdapat kesenjangan seperti rendahnya perhatian pemerintah kepada guru honorer. Penelitian ini bertujuan untuk menganalisis hubungan antara penerimaan diri dengan kesejahteraan subjektif pada guru honorer. Jenis dalam penelitian ini yaitu penelitian kuantitatif. Penelitian ini menggunakan teknik non- probability sampling yaitu quota sampling. Subjek dalam penelitian ini berjumlah 101 guru honorer dengan rentang usia minimal 25 tahun dan sudah bekerja sebagai guru honorer minimal 4 tahun. Metode pengumpulan data menggunakan Skala Penerimaan Diri dan skala kesejahteraan subjektif yang terdiri dari Satisfaction with Life Scale (SWLS), Positive Affect and Negative Affect Schedule (PANAS). Metode analisis data yang digunakan adalah korelasi Spearman rank correlation. Dari hasil analisis data, diperoleh terdapat hubungan yang positif signifikan antara penerimaan diri dan kesejahteraan subjektif pada guru honorer. Dengan demikian, guru honorer sebaiknya mampu menyesuaikan dirinya dengan baik agar dapat memiliki kesejahteraan subjektif yang baik.
Impact of Deficit Irrigation on Bell Pepper (Capsicum annuum var. Grossum) Cultivation
Authors: Ridwan Ridwan , Nugroho Annas Setia Bekti , Amien Elhamida Rezkia , Amin M. , Asmara Sandi
Published: September 2024

The purpose of this study is to determine the effect of deficit irrigation application on the growth of bell pepper plants and to assess the efficiency of irrigation water application for bell pepper plants. The design used in this research is a Completely Randomized Design with 4 levels of deficit irrigation treatments and six replications. The procedures involved in this study include analysis of soil moisture to determine field capacity and permanent wilting point, treatment conditioning, planting, plant maintenance, observations, and finally, harvesting. The data obtained were tested for homogeneity of variances using the F-test, and if there were differences among treatments, further analysis was conducted using the Least Significant Difference test at the 5% level. The results of the data analysis are presented in tables, graphs, and diagrams. Deficit irrigation treatments significantly affected the plant height and leaf number parameters. The plant response to irrigation was limited under deficit irrigation based on total fruit weight, where bell pepper plants produced the best fruit under the 80% deficit irrigation treatment, with an average total fruit weight of 242.17 grams. Meanwhile, in the ID4 treatment, the plant results were less favorable due to stress. The response of the results to water (Ky) indicates that the Ky value (Ky <1) for bell pepper plants in the ID2, ID3, and ID4 treatments shows values less than 1, meaning that these treatments are tolerant to water stress. Keywords:  Bell Pepper, Deficit irrigation, Irrigation, Yield response
Deteksi Kerawanan Banjir Genangan Menggunakan Topographic Wetness Index (TWI) di Sub Das Way Katibung
Authors: Ma’rufah Wahyuni , Ridwan Ridwan , Amin Muhammad
Published: September 2024

This research aims to detect flood susceptibility using the Topographic Wetness Index (TWI) and create a flood susceptibility map in the Way Katibung Sub-watershed using the Topographic Wetness Index (TWI). This study employs the Topographic Wetness Index (TWI) method with observation parameters including land slope, soil type, land elevation, rainfall, and land use. The results show that the most influential parameter on the Topographic Wetness Index (TWI) is the land slope. Therefore, TWI can be used to detect flood susceptibility in the Way Katibung Sub-watershed, which is predominantly flat. Areas with the lowest average TWI value of 6.35 have no potential for flooding, whereas areas with average TWI values of 10.94 and 13.95 are the most susceptible to flooding. The flood-prone areas are primarily located near river streams, such as Mekar Sari, Sumber Agung, Talang Way Sulan, Karang Pucung, Banjar Sari, Purwodadi, and Pamulihan in Way Sulan District. Keywords:  Flood Puddle, Sub-DAS Way Katibung, TWI, Vulnerability.
Analisis Pemberian Air Irigasi pada Daerah Layanan Petak Tersier dengan Luas Maksimal 50 Ha
Authors: Yanto Fery , Ridwan Ridwan , Rosadi R.A. Bustomi , Amin M.
Published: September 2024

Irrigation network is one of the determining factors that are important in regulating the supply of water to agricultural land. If the network cannot meet the needs of irrigation water on agricultural lands, will cause a decrease in problem pruductifity on agricultural land. The purpose of this research is to know the water discharge and assess the effectiveness of the grant of the irrigation water tertiary swath size of maximum 50 ha on rice plant growth phase. The irrigation network that can not meet the needs of irrigation area water means the granting of water in irrigation service areas is not appropriate. The methods used in this research is a survey method. discharge measurement carried out at specified tertiary irrigation channels at random in the field. Results of the study showed measurable discharge on tertiary buildings by using door type Crump of de Gruyter is larger than the discharge should be available, the effectiveness of the grant of the irrigation water which is pretty good going on in the area with extensive irrigation services 30 – 40 ha, with a value of efficiency reached 68%. Keywords:  Irrigation network, Kota Gajah, Performance of irrigation, Tertiary level irrigation
Uji Kinerja Alat Pengering Tipe Batch Dryer untuk Pengeringan Kakao (Theobroma cacao L.) dengan Sistem Penghembus Udara Panas
Authors: Akbar Suseno Ali , Asmara Sandi , Kadir M. Zen , Suharyatun Siti
Published: September 2024

Cocoa is a superior export commodity for Indonesia. Lampung is one of the largest cocoa producing regions in Indonesia. In processing cocoa beans, drying is the most important factor for quality. The causes of the low quality of cocoa beans include unfermented cocoa beans before drying and the conventional drying process. Drying of cocoa can be done using a bacth type dryer with a hot air blower system with a large enough capacity that has been built on offer. This study aims to examine the performance of batch type cocoa dryers with hot air blowing systems. The method used in this study is an experimental and descriptive method that uses cocoa with different initial moisture content, namely 36.62%, 42.20%, and 32.61%. The results showed that the batch type dryer produced plenum temperature of 590 C, 580 C, 620 C and the temperature of the material that was 500 C, 500 C, and 510 C. The higher the temperature used, the faster the drying time and the lower the initial temperature of cocoa the faster the drying process. Rubber wood fuel used in each test is 101 kg, 123 kg, 95 kg. Drying time for all three tests is 10 hours, 11 hours, and 10 hours. The efficiency of drying using batch type dryer is 26.01%, 26.75%, 25.52%. The weight of 1 kg of rubber wood on average can dry 5 kg of wet cocoa Keywords:  Bath Type Dryer, Cocoa, Moisture Content, Temperature.
Analisis Spasial Indeks Kekeringan di Daerah Bandar Lampung
Authors: Sigiro Japen Husoran , Amin M. , Ridwan Ridwan , Rosadi Bustomi
Published: September 2024

Drought is a routine case of natural disasters. Drought in a region can disrupt human activities. Drought occurs due to reduced rainfall, temperatures that are too high than normal, low soil moisture and insufficient surface water supply. The aim of this research is to obtain the distribution of rain and analyze the drought value index in the Bandar Lampung area. The cause of this drought is a step to predict the drought that will occur by analyzing the rain and temperature. This analysis is done by calculating the water balance and determining the drought level using drought index table by thorthwaite mather. The drought analysis is conducted in Bandar Lampung area, where the Bandar Lampung area is the capital city of Lampung province with an area of ± 160 km2 with an average population density of 8,316 people/km2. From the Drought Value Index, the level of drought in the Bandar Lampung area is predominantly low and the level of drought is moderate in the Peace District area. Keywords:  Drought, Spatial Analysis, Water Balance
Risk Mitigation of Murabahah Financing for Teacher Certification at BPRS Metro Madani KCWest Garlic Bones
Authors: Mega Mega Karlina Agustin , Noorikha Pandayahesti Saputeri  , Warsiyah
Published: September 2024

Murabahah financing for teacher certification is a form of financing based on sharia principles in order to help teachers to obtain certification as part of increasing their professional competence. This research journal aims to find out how risk management is implemented in murabahah financing for teacher certification (Sergu) and how banks try to deal with bad customer financing. The object of this research is PT. BPR Syariah Metro Madani KC Tulang Bawang Barat. The method used isqualitative approach, type of field research (Field Research). The results of this research arerisk control at PT. BPR Syariah Metro Madani KC Tulang Bawang Barat has been managed well and in accordance with Standard Operating Procedures (SOP), which includes risk identification, risk measurement, risk monitoring and risk control.Customers duplicate teacher certification, bank (payroll accounts), late disbursement of certification funds from the government, teachers or customers are fired from their jobs while the financing process is still pending, or the government revokes certification funds.Implementation of risk management at PT. BPR Syariah Metro Madani KC Tulang Bawang Barat has been carried out by PT. BPR Syariah Metro Madani KC Tulang Bawang Barat starting from the implementation of market risk handling, credit risk and operational risk has been implemented in accordance with the handling program procedures implemented by the bank, it has been implemented in accordance with the risks that arise, the target to be achieved in handling financing risk management has been achieved.
Addiction and cultural environment: perceptions for dependence throughout centuries
Authors: Triantafillou Chrysoula
Published: September 2024

Since prehistoric times, man began to discover the properties of plants. As archaeological research shows, in every culture plants were cultivated for many purposes: pain relief, religious rituals, relaxation and entertainment. Some of them were attributed supernatural or healing properties depending on the beliefs that prevailed in each era and culture. However, products made from these plants such as alcoholic beverages and psychoactive substances have been shown to be addictive and harmful to health. It has also been observed since ancient times that people also developed addiction to behaviors such as gambling. Addiction is a phenomenon that has been studied in various fields such as science, art and philosophy. People resort to
using legal and illegal substances to get relief from their problems or to relax from the pressures of everyday life.
The present study is based on the systematic bibliographic review of Greek and foreign literature, with a view to highlight the effect of the cultural environment in the use of psychoactive substances, alcohol and addictive behaviors. The search was made through reliable electronic data bases in books, manuals, articles, conference proceedings, doctoral theses and essays. Nowadays, although it is known that alcohol and substances cause not only addiction but also many physical health problems, their consumption has not limited, on the contrary, it has reached threatening proportions.
Although in most countries drugs are illegal and alcohol consumption and gambling are not allowed to minors, their use begins at a younger age and is one of the greatest social problems of modern times.
Competency in electrocardiogram interpretation among medical interns and residents of internal medicine and ER residents
Authors: Alhomyani Faisal , Alotaibi Saja , Althobaiti Atheer , Alsufyani Ghala , Aljuaid Raghad , Neyaz Aseel
Published: September 2024

Background: For both undergraduate and graduate medical students, understanding how to interpret an electrocardiogram (ECG) is essential. Accurate ECG interpretation influences the course of care for acute cardiovascular emergencies. The present study is aimed at assessing the competency in ECG interpretation among medical interns and residents of internal medicine and ER residents in Taif, Saudi Arabia.
Methods: A cross-sectional study was conducted on medical interns and residents of internal medicine and ER residents at Taif University doing residency training programs in Taif Hospitals. ECG figures were selected from the ECG textbooks and ECG web blogs and were reviewed by two cardiologists. After the ECG strip selection, the reviewed structured questionnaires were distributed to the survey participants.
Results: A total of 163 medical interns and residents were included, of them, 79 (48.5%) were aged less than 25 years, and 84 (51.5%) were aged 25 years or more with a mean age of 25.1 ± 3.2 years. A total of 88 (54%) were females. A total of 59 (36.2%) had an overall high competency level with ECG, 79 (48.5%) had moderate ECG competency, and 25 (15.3%) had a low competency level. The overall competency score ranged from 1 to 10 with a mean score of 6.6 ± 1.9 points out of 10. Receiving training and having an ACLS course was significantly associated with a higher competence level.
Conclusion: The current study showed that medical interns and residents in Taif showed an average competence level regarding ECG interpretation with higher competence among those who were trained and received ACLS courses.
Barriers to accessing mental health services among medical students at Imam Mohammed Ibn Saud Islamic University in Riyadh, Saudi Arabia
Authors: Abahussain Eman , Alelaiwi Mohammed , Masoud Abdulaziz , Aldosari Mohannad , Albasri Feras , Alkhenizan Abdulhakeem , Alghamdi Ali , Mulla Adnan
Published: September 2024

Objective: This study aimed to investigate the prevalence of anxiety and depression among medical students, their attitude towards consulting mental health providers, the barriers they face in seeking mental health support, and the relationships between anxiety and depression with demographic factors and attitudes.
Methods: A cross-sectional survey was conducted among medical students, using validated questionnaires to assess levels of anxiety and depression, attitude towards mental health services, and barriers to seeking help. Anxiety and depression were evaluated using GAD-7, and PHQ-9 questionnaires. Statistical analyses were performed to explore associations between mental health conditions, demographic factors, and attitude towards mental health services.
Results: The study found that 46.4% of students experienced minimal anxiety. Regarding depression, 42.7% reported minimal symptoms and 4.4% had severe depression. Despite these high levels, 85.7% had never consulted a mental health provider. Major barriers included academic pressure (45.8%), concerns about confidentiality (30.7%), and feeling that problems were not significant enough (42.2%). Significant associations were found between higher levels of anxiety and depression with being female, younger age, and living alone. Additionally, students experiencing higher levels of anxiety and depression were more likely to recognize the need for mental health services. Still, they often did not seek help due to the identified barriers.
Conclusion: The prevalence of anxiety and depression among medical students was significant, yet the utilization of mental health services remained low due to various barriers.
Контроль технического состояния узлов и агрегатов силовых установок большой мощности на основе одновитковых вихретоковых датчиков
Authors: Белопухов В.Н. , Боровик С.Ю. , Кутейникова М.М. , Подлипнов П.Е. , Секисов Ю.Н. , Блинов А.В. , Голдобин Е.А.
Published: September 2024

Рассматривается подход к построению средств on-line диагностики опасных состояний энергосиловых установок большой мощности, вызванных разрушением пар трения в авиационных и ракетных двигателях, а также попаданием посторонних предметов в газовоздушный тракт авиационного газотурбинного двигателя. В основе подхода лежит использование оригинальных одновитковых вихретоковых датчиков с чувствительными элементами в виде одиночного контура тока или отрезка проводника, а также их кластерных разновидностей. Простота конструкции датчиков обеспечивает высокую технологичность их изготовления и работоспособность в условиях интенсивного воздействия внешних влияющих факторов. Приводятся примеры практической реализации подхода в конкретных системах контроля состояний энергосиловых установок, работоспособность которых была проверена в лабораторных и стендовых условиях.
Обнаружение и распознавание техногенных и скрытых подповерхностных объектов с помощью нейронных сетей глубокого обучения
Authors: Громов Ю.Ю. , Ищук И.Н. , Родионов В.В.
Published: September 2024

Представлен обзор существующих методов к обнаружению и распознаванию техногенных и подповерхностных объектов на изображениях, в том числе основанный на применении нейронных сетей глубокого обучения. Показано применение метода сегментации разновременных многоспектральных изображений в задачах обнаружения и распознавания техногенных и скрытых подповерхностных объектов на изображениях с использованием нейронных сетей глубокого обучения. Описывается архитектура сверточной нейронной сети, которая используется для решения данной задачи. Приводятся результаты экспериментов, проведенных на наборе данных, состоящем из изображений видимого и инфракрасного диапазона длин волн.