bluuebunny/crossref_metadata_2025 huggingface dataset:
A 14,000-year sediment record of mercury accumulation and isotopic signatures from Lake Malaya Chabyda (Siberia)
Authors: Hughes-Allen Lara , Bouchard Frédéric , Biskaborn Boris K. , Cardelli Sahara , Laffont Laure , Subetto Dmitry A , Sonke Jeroen E.
Published: October 2023

Eurasian permafrost soils contain large amounts of organic carbon (OC)
and mercury (Hg), sequestered by vegetation during past and present
interglacial periods. Lake sediment archives may help understand past OC
and Hg dynamics and how they interact with climate-related variables. We
investigated Hg accumulation, OC dynamics, and Hg and OC stable isotopes
in a 14,000 year sediment record from lake Malaya Chabyda (Central
Yakutia, Russia). Sediment Hg was correlated to OC (p value
<0.01), with lower OC and Hg accumulation rates (OCAR, HgAR)
during the cold Younger Dryas (YD, 12,900­–11,700 cal BP), when the
lake level was low. Elevated sediment Δ200Hg (0.05 ± 0.11‰),
representing dominant HgII deposition, and low δ13C, indicates low lake
primary productivity during the YD. During the early Holocene, Δ200Hg
and Δ199Hg decreased, while δ13C, δ202Hg, OCAR, and HgAR increased,
suggesting enhanced algal primary productivity, in deeper, more turbid
waters. From 4,100 cal BP to present, Hg/OC ratios and HgAR increased at
constant OCAR, indicating an additional Hg source to the lake. Analysis
of Hg isotopes suggests enhanced direct Hg0 uptake into lake waters,
driven by primary production and efficient Hg burial. Our observations
suggest that the gradual climate warming since the Last Glacial
Termination and into the late Holocene led to enhanced OC and Hg burial
in northern lakes and watersheds. Early Holocene enhanced Hg burial, but
not OC, is possibly related to a renewed increase in lake primary
productivity. Continued global warming may lead to further Hg
sequestration in northern aquatic ecosystems.
Emergence of efficient channel networks in fluvial landscapes
Authors: Borse Dnyanesh Vijay , Biswal Basudev
Published: October 2023

Channel networks across fluvial landscapes are believed to have evolved
to minimize energy expenditure[1–3], as evidenced by the
similarities between computer-generated optimal channel networks (OCNs)
and real networks[4,5]. However, the specific mechanisms driving
energy minimization in fluvial landscapes remain largely elusive[6].
Here we propose that randomness has a profound role in landscape
evolution[7] and that efficient channel networks emerge when the
probability of a channel pixel changing its flow direction decreases
with drainage area. The proposed probabilistic growth model then employs
a power function to simulate channel-network evolution, with positive
exponent (𝜂) values leading to asymptotic decrease of energy
expenditure. An interpretation of this result is energy minimization
tendency of river networks is a result of landscape evolution following
specific adaptive rules rather than being the cause of landscape
evolution itself. A greater 𝜂 ensures a greater restriction on the role
of randomness and thus results in a more stable channel network
configuration, and vice versa. Interestingly, the most efficient
networks are observed to emerge always at 𝜂 =0.5, suggesting that
randomness plays an important but limited role in the emergence of
efficient channel networks. The proposed framework holds promise for
explaining the evolution of other tree-like networks in nature and for
developing more efficient optimization methods for practical
applications.
Extending GLUE with Multilevel Methods to Accelerate Statistical Inversion of Hydrological Models
Authors: Rudolph Max Gustav , Wöhling Thomas , Wagener Thorsten , Hartmann Andreas
Published: October 2023

Inverse problems are ubiquitous in hydrological modelling for parameter
estimation, system understanding, sustainable water resources
management, and the operation of digital twins. While statistical
inversion is especially popular, its sampling-based nature often
inhibits the inversion of computationally costly models, which has
compromised the use of the Generalized Likelihood Uncertainty Estimation
(GLUE) methodology, e.g., for spatially distributed (partial)
differential equation based models. In this study we introduce
multilevel GLUE (MLGLUE), which alleviates the computational burden of
statistical inversion by utilizing a hierarchy of model resolutions.
Inspired by multilevel Monte Carlo, most parameter samples are evaluated
on lower levels with computationally cheap low-resolution models and
only samples associated with a likelihood above a certain threshold are
subsequently passed to higher levels with costly high-resolution models
for evaluation. Inferences are made at the level of the
highest-resolution model but substantial computational savings are
achieved by discarding samples with low likelihood already on levels
with low resolution and low computational cost. Two test problems
demonstrate the similarity of inferred parameter posteriors and
uncertainty estimates of MLGLUE and GLUE as well as increased
computational efficiency. Findings are furthermore compared to inversion
results from Markov-chain Monte Carlo (MCMC) and from multilevel delayed
acceptance MCMC. The computation time of inversion of a groundwater flow
model was decreases by ≈45% and ≈57% when using MLGLUE instead of
conventional formulations of GLUE and MCMC, respectively.
The role of the nutritional status of geriatric patients with gastrointestinal cancer in developing postoperative complications
Authors: Starcevic Sanja , Radovanovic Dragana , Skoric-Jokic Svetlana , Mihalek Nora , Golijanin Danica
Published: October 2023

Background: Many studies have shown that geriatric patients with altered nutritional status are at higher risk of developing complications during medical treatment. Our study aimed to examine the role of preoperative nutritional status in developing postoperative complications and the length of hospital stay in geriatric patients who suffer from cancer and undergo major abdominal surgery. Methods: Prospective research was conducted at the Oncology Institute of Vojvodina from January 2020 until April 2021. This study included 82 patients over 65 years old, who were admitted to have radical surgery for gastrointestinal cancer performed. There were 6 patients excluded from the study. Nutritional status analysis was performed using BMI (Body mass index), preoperative serum albumin level, MNA-SF (Mini nutritional assessment- short form), and GNRI (Geriatric nutritional risk index). The classification of surgical complications was done using the Clavien-Dindo classification scale. Results: Of the total number of patients, 57 of them (75%) developed at least one surgical complication. Nonsurgical complications have been recognized in 28 patients (36.84%). Overweight patients, according to BMI, had a greater chance of developing grade I (p < 0.01) and grade II (p < 0.05) surgical complications of the Clavien-Dindo classification. Patients with normal serum albumin levels had a significantly lower chance of developing surgical complications of any grade (p = 0.00). BMI and MNA- SF were the most important predictors of delirium. Patients without GNRI risk (GNRI: >98) had a significantly lower chance of developing nonsurgical complications regarding comorbidity exacerbation (p = 0.03), and delirium (p = 0.00). Conclusion: None of the nutritional assessment tools used in our study were better or more efficient than the others in our sample of patients. Precise nutritional status assessment is complex and we cannot use only one scoring system or scale to get accurate results.
SDHx mutations are associated with the PI3K-Akt signaling pathway in vagal paragangliomas
Authors: Snezhkina Anastasiya , Fedorova Maria , Ayupova Asiya , Pudova Elena , Kobelyatskaya Anastasiya , Kalinin Dmitry , Golovyuk Alexander , Krasnov George , Pavlov Vladislav , Kudryavtseva Anna
Published: October 2023

Background: Vagal paraganglioma (VPGL) is a very rare neuroendocrine tumor arising from the paraganglion associated with the vagus nerve. VPGL is mainly characterized by an asymptomatic course and slow growth. However, up to 19% of tumors can metastasize. Due to the rarity of this tumor, information about VPGL is limited to single cases and small sample sets; the data on molecular genetic features is extremely scarce. Methods: For the first time we have analyzed the enrichment of biological pathways associated with mutations in the SDHx genes in VPGLs. Bioinformatics analysis was performed based on the results of high-throughput transcriptome sequencing on an Illumina platform for 33 tumor tissues obtained from patients with vagal paragangliomas. Results: Eight pathways of the Kyoto Encyclopedia of Genes and Genomes (KEGG) database with gene overrepresentation (top-40 mode) have been identified. Significant changes were shown for the cancer-associated PI3K-Akt signaling pathway and interconnected pathways of focal adhesion and interaction of receptors with the extracellular matrix enriched by overexpressed genes. Conclusion: Our result indicates the association of SDHx mutations with changes in the PI3K-Akt signaling pathway in vagal paraganglioma. The potential mechanism of deregulation in this pathway could be linked with a state of pseudohypoxia induced by the dysfunction of succinate dehydrogenase due to mutations in the SDHx genes.
Exocrine Pancreas in Type 1 and Type 2 Diabetes: Different Patterns of Fibrosis, Metaplasia, Angiopathy, and Adiposity
Authors: Wright Jordan J. , Eskaros Adel , Windon Annika , Bottino Rita , Jenkins Regina , Bradley Amber M. , Aramandla Radhika , Philips Sharon , Kang Hakmook , Saunders Diane C. , Brissova Marcela , Powers Alvin C.
Published: October 2023

The endocrine and exocrine compartments of the pancreas are spatially related but functionally distinct. Multiple diseases affect both compartments, including type 1 diabetes (T1D), pancreatitis, cystic fibrosis, and pancreatic cancer. To better understand how the exocrine pancreas changes with age, obesity, and diabetes, we performed a systematic analysis of well-preserved tissue sections from the pancreatic head, body, and tail of organ donors with T1D (n = 20) or type 2 diabetes (T2D) (n = 25) and donors with no diabetes (ND; n = 74). Among ND donors, we found that the incidence of acinar-to-ductal metaplasia (ADM), angiopathy, and pancreatic adiposity increased with age, and ADM and adiposity incidence also increased with BMI. Compared with age- and sex-matched ND organs, T1D pancreata had greater rates of acinar atrophy and angiopathy, with fewer intralobular adipocytes. T2D pancreata had greater rates of ADM and angiopathy and a higher total number of T lymphocytes, but no difference in adipocyte number, compared with ND organs. Although total pancreatic fibrosis was increased in both T1D and T2D, the patterns were different, with periductal and perivascular fibrosis occurring more frequently in T1D pancreata and lobular and parenchymal fibrosis occurring more frequently in T2D. Thus, the exocrine pancreas undergoes distinct changes as individuals age or develop T1D or T2D.

Article Highlights
Evaluation of Glazing and Polishing Systems for Novel Chairside CAD/CAM Lithium Disilicate and Virgilite Crowns
Authors: Jurado CA , Arndt K , Azpiazu-Flores FX , Faddoul F , França R , Fischer NG , Watanabe H
Published: October 2023

Objective

The purpose of this study was to evaluate the effectiveness of glazing, two zirconia, and two lithium disilicate polishing systems on surface roughness of a CAD/CAM lithium disilicate and virgilite ceramic with atomic force microscopy (AFM) and visual assessment performed by dental students and faculty.

Methods and Materials

Sixty maxillary right central incisor crowns made of a novel chairside CAD/CAM lithium disilicate and virgilite (CEREC Tessera) were milled for glazing and polishing. The crowns were divided into six groups: no polishing/glazing provided (NoP/G); glazed (GZ); glazed and polished with Brasseler Dialite LD Lithium Disilicate (DiLD); glazed and polished with Meisinger Luster Lithium Disilicate (LuLD); glazed and polished with Brasseler Dialite ZR Zirconia (DiZR); and glazed and polished with Meisinger Luster Zirconia (LuZR). Surfaces were scanned with AFM to measure roughness (Ra) and root mean square roughness (Rq) and generate micrographs. Crowns were visually assessed by 10 dental students and 10 dental school faculty members to determine clinical acceptableness.

Results

Glazing and all polishing kits significantly reduced Ra and Rq compared to no polishing/glazing. No significant Ra differences were found between glazing and all polishing kits (p>0.05). DiZR significantly reduced Rq compared to other groups (p<0.05). Visual assessment showed that GZ, LuLD, and DiZR were the most clinically acceptable crowns.

Conclusion

Polishing and glazing considerably improve the surface smoothness of maxillary central incisor crowns fabricated out of a chairside CAD/CAM lithium disilicate and virgilite ceramic. Altogether, zirconia polishing systems provided smoother and more clinically acceptable surfaces than the lithium disilicate kits.
Effect of Commercial Mouth Rinses on Physical Properties of Conventional and Bulk-fill Resin Composites
Authors: Derigi LP , Barros LS , Sugii MM , Turssi CP , França FMG , Basting RT , Vieira WF
Published: October 2023

Objective

To evaluate the effects of commercial mouth rinses on color, roughness, sorption (SR), and solubility (SL) of resin composites.

Methods and Materials

Disc-shaped specimens (stage I: 6 mm × 2 mm; stage II: 10 mm × 1.5 mm) were made from the following resin composites (n=10): conventional nanofilled (Filtek Z350XT, 3M Oral Care), conventional nanohybrid (Luna, SDI), bulk-fill nanofilled (Filtek One Bulk-Fill, 3M Oral Care), and bulk-fill nanohybrid (Aura Bulk-Fill, SDI) exposed to distilled water (control), blue mouth rinse without alcohol (Colgate Total 12 Clean Mint, Colgate-Palmolive), or blue mouth rinse with alcohol and essential oil (Listerine Tartar Control, Johnson & Johnson). In stage I, tests were performed at the baseline, and after the immersion in solution time points to evaluate coordinates of the CIEL*a*b* system (ΔL*, Δa*, Δb*), general color change (ΔEab, ΔE00, and ΔSGU), and surface roughness (Ra). In stage II, SR and SL were evaluated (ISO 4049:2019) after immersion in the solutions for 7 days. The results were evaluated by generalized linear models (Ra, SR), Kruskal–Wallis, and Dunn tests (color, SL), with α = 0.05.

Results

There were no significative differences for Ra between the solutions. Both mouth rinses promoted significantly negative ΔL* (Luna), Δa* (Filtek One Bulk-fill), and Δb* (all materials except conventional nanofilled resin composite). Mouth rinse without alcohol promoted significantly negative Δa* on all resin composites tested. Both mouth rinses promoted higher ΔEab and ΔE00 for bulk-fill resin composites compared to control. Mouth rinse with alcohol caused higher ΔSGU for bulk-fill nanofilled resin composite. It also promoted greater SR in all the resin composites compared with mouth rinse without alcohol and higher SR in nanohybrid resin composites compared with control. Both mouth rinses promoted higher SL values in Luna and differed significantly from control.

Conclusions

The physical properties were manufacturer dependent and mediated by mouth rinses. The mouth rinses promoted color changes in the resin composites, pointing out that bulk-fill resin composites were more affected by these effects, especially when the mouth rinse contained essential oil and alcohol.
Ledelse på norsk
Authors: Vie Ola Edvin
Published: October 2023

Med utgangspunkt i at det finnes en egen norsk arbeidslivsmodell, er det naturlig å spørre om det finnes en egen norsk ledelsesmodell? En gjennomgang av de ledelsesteoretiske miljøene i Norge viser at det profesjonelle ledelsesidealet står sterkt i de ledelsesteoretiske miljøene her, mens studiene av lederes prioriteringer og faktiske tidsbruk viser seg å ligge tettere opptil samarbeidstanken etter Thorsrud og idealet om faglig ledelse. Noen kjennetegn på norske ledere er at de er mer opptatt av interne enn eksterne forhold, de er opptatt av medarbeidernes trivsel, de bruker mye tid på muntlig kommunikasjon, hvor formålet er å utveksle informasjon og forespørsler/spørsmål i tillegg til å vise omsorg for sine medarbeidere. Til sammen gir dette et bilde av motstridende tendenser som peker mot at norsk ledelse ligger i skjæringspunktet mellom idealene om faglig og profesjonell ledelse.Nøkkelbegreper: norsk ledelse, faglig og profesjonell ledelse, norske ledelsesteoretiske tilnærminger, lederstudier
Egenkapitalkrav og finansiell risiko i husholdningenes boliginvesteringer
Authors: Borgersen Trond-Arne , Kivedal Bjørnar Karlsen , Thøgersen Joachim
Published: October 2023

Kombinasjonen av en lav boliglånsrente og en høy boligprisvekst gir meravkastning for lånefinansierte boliginvesteringer. For husholdninger som lånefinansierer boliginvesteringer, er formuesgevinsten fra boligkapital dermed en kombinasjon av en pris- og en belåningsgevinst. Belåningsgevinsten er positivt relatert til investeringens belåningsgrad. En positiv meravkastning gir husholdninger med kortsiktig planleggingshorisont insentiv til å øke belåningen på sine boliginvesteringer. Den økte belåningsgevinsten som følger av en høyere belåningsgrad, går imidlertid sammen med økt risiko. Restriksjoner på belåningsgrad og krav om egenkapital ved boligkjøp kan slik være tiltak egnet for å dempe husholdningenes finansielle risiko.1
Killer Nurse with Hydrochloric Acid, Autopsy Report
Authors: Guerriero Massimiliano
Published: October 2023

This particular example is known in the news as the case of the killer nurse. In the end, the nurse was sentenced to 30 years in prison. We describe the unusual case (both the reasons for and the use of an unusual substance in these cases) of a nurse who used hydrochloric acid to kill a patient. To date we are not aware of any such cases having been described in the medical literature. This is a very special case because the nurse did not use a drug to kill the patient, as already described in numerous previous cases, but used a caustic substance: hydrochloric acid.
Blood as Forensic Evidence Helps in Solving Sexual Assault in POCSO Act Case-a Case Study
Authors: Malkar Shital B
Published: October 2023

Blood is important evidence in many crimes like murder, rape, gang war etc. Blood and semen are mildly alkaline aqueous body fluid, which carries DNA. Every living thing has DNA, it’s every composition differentiate you from others. The interesting fact is that although 99.99% of human DNA sequences are same in every person it is only 0.01 % of DNA that makes you unique. According to Locard Principle it is impossible for a criminal to act especially considering the identity of a crime without leaving traces of his presence , that means whenever someone enters or exist an environment, something physical is added to or removed from the scene. In rape cases not only semen factor is important but also blood plays vital role in the forensic analysis. In some rape cases we observed that condoms are being used by accused, therefore in such cases it is quite impossible to get the analytical results of semen. Likewise in POCSO (protection of child from sexual offence.) rape cases analytical tests for semen resulted as negative as the victim passes out urine , in such rape cases “Blood “is the only important factor for analytical view. Sometime blood of victim is observed on clothes of accuse or vice versa. Analytical results of blood correlate the crime scene.
Examining the Psychometric Properties of the Career Commitment Instrument through Classical Test Theory and the Graded Response Model
Authors: Asriadi AM Muh. , Setiawati Farida Agus
Published: October 2023

The gaps that exist in the literature by conducting a comprehensive evaluation of the psychometric properties of the Career Commitment Instrument using CTT and GRM. This exploratory study aims to analyze the psychometric properties of the career commitment instrument using a classical test theory approach and graded response model. Research using cross-sectional design. Data were obtained from a career commitment questionnaire with 12 statement items and 250 respondents who were randomly selected. The summed ranking method (Likert) was used for scaling, with five response options. Data were analyzed using R Studio's traditional Graded Response Model Theory Test technique. Based on the findings, the quality of the career commitment instrument has an estimated reliability of 0.77 (reliable) and a standard measurement error of 3.3. This instrument has a good Endorsement Index and Discrimination Index, with a classic and modern approach. Furthermore, analysis of the stratified response model revealed that 10 items were suitable and 2 were not. If given to respondents with a low level of ability (θ=-2) to a high level of ability (θ=2), this instrument provides complete information of 58.93 with a standard error of 1.0. This instrument can be used by companies to assess the career commitment of their employees. Future research can test the convergent and divergent validity of the career commitment instrument with similar instruments or with different instruments, to strengthen its validity.
The Influence of Teacher Competence and Work Motivation on the Performance of State High School Teachers
Authors: Halimahturrafiah Nur , Marsidin Sufyarma , Anisah  , Rifma
Published: October 2023

There are still problems related to teacher performance which are thought to be caused by teacher competence and low work motivation. The purpose of this study was to analyze about (1) the performance of state high school teachers. (2) the competence of state high school teachers. (3) the work motivation of state high schools. (4) the influence of teacher competence and work motivation in partial and joint performance on the performance of State High School teachers. This research is correlational quantitative research with associative type. The population is all teachers who teach at State High School, totaling 191 people. Samples were taken using the Proportional Stratified Random Sampling technique. The research instrument used a Likert Scale model questionnaire. From the trial results, it was found that the research questionnaire was valid. Then the research data were analyzed using the average score (Mean) for data description, requirements test, namely the normality test, homogeneity test, linearity test and multicollinearity test. Then test the hypothesis using simple linear regression and multiple linear regression testing using SPSS version 25.0. The results of the descriptive analysis of teacher performance were 89.40%, teacher competence was 89.95%, and work motivation was 87.9%. The results of the data analysis show that there is a significant influence between teacher competence on teacher performance of 47.2%, there is a significant influence between work motivation on teacher performance of 25.8%, and there is a significant influence between teacher competency and work motivation jointly on teacher performance of 75.1%.
Interactive Powerpoint Media in Grade IV Elementary School
Authors: Al Fajar Beny , Mayar Farida
Published: October 2023

The teacher as a facilitator must be able to present interesting material and learning for students. There are still many teachers who have not used learning tools that can assist teachers in conveying learning to students which can cause the learning process to be less than optimal. The media that will be used will make students more active in the learning process. One example of learning media that can be used by teachers is multimedia using Powerpoint. This research aims to develop interactive PowerPoint media for thematic learning in grade IV elementary school. This study uses research and development (R&D) methods using the 4D models. Data collection in this study used a questionnaire to determine the validity test and practicality test of the media. The effectiveness test is done by testing. The expert's validation on the material, media, and language aspect scored in Very Valid category. The results of the practicality test by the teacher obtained score in Very Practical category, and results of practicality test by students obtained score \in Very Practical category. The results of effectiveness test on aspect knowledge with the pretest at elementary school obtain very good predicate. Assessment of skills aspects at elementary school found Very Good predicate. From the research can be concluded that interactive PowerPoint media in class IV of elementary school is practical and effective for use in class IV of elementary school.
DRAMATURGI SEBAGAI UPAYA PENDAMPINGAN CHILD MENTAL HEALTH DISORDER DI PANTI ASUHAN BUSSAINA BANDAR LAMPUNG
Authors: Marbun Kristian Ludovikus , Khoirunnisa Yulia , Irawan Ferdy , Anjani Dewi , Ningrum Restu Widya , Perdana Yusuf
Published: October 2023

Kesehatan mental anak memiliki posisi yang sangat penting, karena kelak anak yang memiliki kesehatan mental yang baik akan tumbuh dan berkembang menjadi anak memiliki karakter positif, mampu mengontrol diri, bersosialisasi dengan individu lain, tetapi anak yang mengalami gangguan kesehatan mental akan tumbuh dan berkembang menjadi anak yang agresif, kurang bertanggung jawab, dan tidak dapat mengontrol diri dengan baik. Banyak orang tua yang tidak mengetahui anak mereka mengalami gangguan kesehatan mental, terlebih bagi anak-anak yang berasal dari latar belakang kurang beruntung. Tujuan dari pelaksanaan pengabdian kepada masyarakat ini untuk memberikan wawasan dan pedoman mengenai pentingnya bahaya gangguan kesehatan mental dan cara untuk melakukan pendampingan melalui metode pelaksanaan dari pelaksanaan pengabdian kepada masyarakat yang telah terlaksana dalam serangkaian tahapan dengan disusun secara sistematis dan menggunakan metode observasi. Sasaran dari pelaksanaan pengabdian kepada masyarakat ini, yaitu anak-anak yang ada di Panti Asuhan Bussaina Bandar Lampung. Metode yang digunakan adalah metode dramaturgi dengan implementasi berupa penampilan drama dari anak-anak panti asuhan dan pengabdi. Hasil yang didapatkan dari adanya pengabdian ini adanya peningkatan pada pengetahuan dan pemahaman mengenai bahayanya gangguan kesehatan mental pada anak atau child mental health disorder. Cara yang digunakan adalah pre-test dan post-test untuk melihat data tentang peningkatan yang terjadi. Manfaat dari kegiatan pengabdian ini, yaitu memberikan informasi dan pandangan mengenai upaya pendampingan child mental health disorder yang dapat diterapkan bagi para penyandang gangguan mental terutama anak-anak, sehingga pemerintah dapat mengatasi dan mendampingi gangguan kesehatan mental anak sejak dini.
PELAKSANAAN PROGRAM KAMPUS MENGAJAR DI SDN 105269 SUNGGAL UNTUK MENINGKATKAN KEMAMPUAN LITERASI DAN NUMERASI SISWA
Authors: Pasaribu Imelda Anastasya , Pardede Hebron , Sitorus Parlindungan
Published: October 2023

Program Kampus Mengajar merupakan salah satu program kebijakan Merdeka Belajar Kampus Merdeka (MBKM) yang berupa asistensi mengajar untuk memberdayakan mahasiswa dalam membantu proses pembelajaran di Sekolah Dasar di berbagai Desa/Kota. Adapun kegiatan yang dilakukan dalam program Kampus Mengajar adalah membantu mengajar, membantu adaptasi teknologi, dan membantu administrasi sekolah. Mahasiswa Kampus Mengajar berfokus dalam peningkatan kualitas pembelajaran dan kemampuan numerasi serta literasi pada siswa Sekolah Dasar (SD) atau Sekolah Menengah Pertama (SMP). Salah satunya di SD Negeri 105269 Sei Beras Sekata, Kecamatan Sunggal, Kabupaten Deli Serdang, Sumatera Utara. Kegiatan ini memberikan hasil pengalaman yang belum tentu didapat bagi mahasiswa melalui bangku perkuliahan. Hasil dari program ini adalah sebagai penanaman empati dan kepekaan sosial pada diri mahasiswa, mengasah keterampilan dan menyelesaikan masalah dalam bekerja sama lintas bidang ilmu dan ragam asal mahasiswa, mengembangkan wawasan, karakter dan soft skills mahasiswa, serta meningkatkan peran dan kontribusi nyata perguruan tinggi dan mahasiswa dalam pembangunan nasional melalui pendidikan.
PELATIHAN PENULISAN KARYA TULIS ILMIAH UNTUK MENINGKATKAN KETERAMPILAN MAHASISWA
Authors: Ekaputra Firdiawan
Published: October 2023

Tujuan dari kegiatan pelatihan ini adalah melatih keterampilan menulis karya tulis ilmiah mahasiswa. Kegiatan pelatihan diikuti oleh 26 mahasiswa Program Studi Pendidikan Kimia Universitas Jambi semester 6 yang dilaksanakan di ruang L-102 FKIP. Kegiatan pelatihan penulisan karya tulis ilmiah meliputi tahap persiapan, pelaksanaan, dan evaluasi. Tahap perencanaan terdiri dari kegiatan menganalisis permasalahan, menentukan metode pelatihan dan mempersiapkan materi pelatihan. Tahap pelaksanaan terdiri dari menyampaikan materi pelatihan, membuat karya tulis ilmiah, presentasi hasil. Tahap evaluasi dilakukan untuk mengukur tingkat pemahaman dan ketercapaian dari kegiatan pelatihan. Nilai ketercapaian kegiatan pelatihan penulisan karya tulis ilmiah berdasarkan isian angket mahasiswa sebesar 4,60 dengan kriteria sangat baik.
EDUKASI PUBLIK SPEAKING DI DESA WIYONO, PESAWARAN
Authors: Pratama Rinaldo Adi , Tarkono Tarkono , Miswar Dedy , Annisa Nurmalia , Manurung Silvany Claudya
Published: October 2023

Desa Wiyono, di Kecamatan Gedong Tataan, Pesawaran, menghadapi masalah minimnya pengetahuan mengenai public speaking, baik dari internal sekolah maupun sumber eksternal seperti jurnal, buku, dan internet. Minimnya minat terhadap public speaking menjadi penyebab utama. Namun, public speaking memiliki peran penting dalam interaksi sosial. Pemahaman terhadapnya meningkatkan kepercayaan diri berbicara di depan umum, mengatasi kepanikan, dan memperbaiki struktur pesan komunikasi. Kegiatan edukasi public speaking di Desa Wiyono bertujuan untuk memberikan pengetahuan kepada masyarakat, khususnya remaja dan orang dewasa (15-30 tahun), tentang pentingnya public speaking dalam kehidupan sosial. Program ini melibatkan tiga tahapan: persiapan, pembuatan materi, dan pelaksanaan. Sasaran meliputi aparatur desa, masyarakat, dan siswa SMP N 22 Gedong Tataan. Meskipun menghadapi beberapa hambatan, program ini berhasil memberikan manfaat kepada masyarakat, meningkatkan pengetahuan public speaking, serta mendapat apresiasi positif dari warga. Keberhasilan program ini menciptakan kesadaran akan pentingnya keterampilan public speaking dalam kehidupan sehari-hari dan mendorong perkembangan bakat berbicara di depan umum.
Impact of Restructuritation Strategies and Financial Instruments for Loan Loss Provision
Authors: Kusumah Hanifah Putri , Faturohman Taufik
Published: October 2023

When the COVID-19 pandemic started in April 2020, there was a swift change for portfolio banks in the lending sector. Loan at risk still dominated all of the lending portfolio banks. As a result, the quality of the portfolio and bank assets is getting worse. Furthermore, the banking industry is advised to continue paying attention to the adequacy of loan loss provisioning for impairment losses in anticipating the potential for deteriorating credit quality. The condition of the banking business portfolio, especially in the lending sector, is experiencing worsening conditions due to the COVID-19 pandemic. Loan loss provisioning as the bank’s anticipation of the risk of losing productive assets could contribute in a significant way to the financial crisis in the banking sector. This study analyzes the restructuritation, bank size, capital, inflation, operating expenses management, and productivity growth on loan loss provision. Data collection is done by recording every data needed from The Financial Services Authority (OJK) in the audited financial report. The data were collected for five years quarterly from Q2 2017–Q4 2022, with the object of research being ten banks of group BUKU IV. In total, there are 220 data observations. The dependent variable in this study is loan loss provision. Moreover, the independent variables in this study are restructuritation, bank size, capital, inflation, operating expenses management, and productivity growth. This study uses a quantitative approach with an explanatory or causal design. The data analysis used in this study is panel data regression with the help of the EViews 13 program. The results show that restructuritation policy, inflation rate, and bank size during the COVID-19 pandemic have a significant positive impact on loan loss provision. However, capital bank productivity growth before the COVID-19 pandemic occurred. Also, the operating expense management during the restructuring policy implementation period significantly negatively affects loan loss provision.
A Phenomenographic Research On The Covid-19 Pandemic Process
Authors: ÇOLAK SEYMEN Canan , SAKA Arzu , TUTİ Gamze
Published: October 2023

Purpose: In this study, it is aimed to evaluate the opinions of administrators and teachers about the reflections of the pandemic process on learning processes by making SWOT analysis.

Design/Methodology/Approach: In this context, the study was carried out with the phenomenographic research method. The study group of the research consists of 568 administrators and teachers in Trabzon in the 2020-2021 academic year. The data for the SWOT analysis were obtained by applying the structured forms prepared by the researchers to the participants.

Findings: The obtained data were analyzed by content analysis. In strengths; It has been determined that out-of-school learning opportunities have increased and students' technology use competencies have improved. On weak points; it has been revealed that it is inadequate in the lessons that require practice and there is a face-to-face communication problem. In opportunities; increasing the time spent with the family and providing fast and easy access to information came to the fore. In threats; infrastructure problems were the identified themes.

Highlights: It has been concluded that teachers should receive in-service training on methods and techniques that they can use in distance education. During the pandemic process, students were encouraged to take more responsibility for learning, and equal opportunities were provided for introverted students. The need for more objective approaches in measurement and evaluation has come to the fore. It is recommended to support applied courses with appropriate content so that they can be adapted to the distance education process.
The Relationship Between Readability and Text Design in Educational Websites1
Authors: KESKİNKILIÇ Fatma
Published: October 2023

Purpose: Purpose of this study is to investigate the readability levels of the websites that have educational contents.

Design/Methodology/Approach: Web-site readability is generally examined through the structural properties of the texts, or their physical properties. This research performs readability measurements are performed by employing both of the above- mentioned methods.

Findings: The findings illustrate that half of the websites are at the medium difficulty level, 20% of the remaining websites are easy, and 30% of them are difficult in terms of readability. It is concluded that readability and text design levels of the investigated websites are consistent with each other.

Highlights: The most important features in terms of text design elements in educational websites are the tonal value of the text that makes it easier to read, the balanced use of the spaces between the letters, attention to the text integrity in the text, the listing levels not exceeding two levels, and the clickability of the links. It has been seen that the least considered features in terms of text design elements in educational websites are glossary and bibliography arrangement, not including scroll bars, explaining links with texts, distinguishing visited links, inverted pyramid technique, using in-page links. It has been seen that the texts on the educational websites are at a medium difficulty level according to the text design elements scale. According to the result obtained from the readability formula of the texts on the educational websites, it was seen that the readability levels were at the medium difficulty level.
Pengembangan Panduan Praktikum Laboratorium Virtual Berbasis Keterampilan Proses Sains Untuk Meningkatkan Pemahaman Konsep Siswa
Authors: Anggraini Dini , Suseno Nyoto , Alarifin Dedy Hidayatullah
Published: October 2023

ABSTRACTEfforts to improve understanding of concepts in students can be seen from their academic abilities. Understanding concepts is a term used to mean the extent to which students are able to understand the basic concepts of a material provided by the teacher. One effort to improve the understanding of concepts in students is to do experimental learning models or practicum. Along with the advancement of time where technology can be used as a tool in learning, therefore the implementation of practicum can be done using a virtual laboratory. The use of virtual laboratories can run well and in accordance with procedures when using a virtual laboratory practicum guidelines. The making of practicum guidelines must not be separated from the scientific process skills because it has been regulated in Regulation of the Ministry of Education and Culture No. 22 of2016.The purpose of this study is to find out the development of practical process guidelines based on science process skills using virtual laboratories, to determine the impact of virtual laboratories on students' understanding of concepts, and to determine the strengths and weaknesses of virtual laboratories. After conducting field tests in SMA 1 Metro with a class XII IPA 4 as sample, it is known that the results of the feasibility of using a virtual laboratory practice guidelines based on science process skills, namely expert validation got a percentage of 84.6%, Teacher Response 91.25% and Student Response 88, 4% Based on the average percentage of the three assessments of 88.08%, it is in the very feasible category. As for understanding the concept an increase of 21.4 between the pretest and posttest scores. Based on the results of the study, the virtual laboratory practicum guidelines based on science process skills affect the learning process specifically to improve students' understanding of concepts.

Keywords: Development of practicum guides, virtual laboratories, science process skills, conceptual understanding
PENGGUNAAN ALAT PRAKTIKUM MESIN ATWOOD BERBASIS ARDUINO TERHADAP HASIL BELAJAR DAN KETERAMPILAN ARGUMENTASI MAHASISWA PENDIDIKAN FISIKA PADA MATA PRAKTIKUM MEKANIKA TAHUN AKADEMIK 2017/2018
Authors: Fajri Gina Lailatul , Suseno Nyoto , Salim M. Barkah
Published: October 2023

Abstract: The results of the presurvey conducted at the Laboratory of Physics Education, University of Muhammadiyah Metro that there is an arduino-based atwood machine practicum tool that has been made by Rohmah (2017) and has been validated with good accuracy but this tool has not been used in learning and has several advantages one of which is automatic detect the time needed for objects to move, so that the tool can work well and can be used to find out learning outcomes and argumentation skills. The research subjects were 12 students of Muhammadiyah Metro University physics education. Data collection instruments use student worksheets and test questions. The results showed that the use of arduino-based atwood machine practicum tools could affect the learning outcomes and argumentation skills of physics education students. Learning outcomes were calculated using a t-test with a significance level of 5%, so the results showed that thit abel t table was 5.66 ≥ 2.07, thus rejecting hypothesis H0 and accept H1: (there is a difference between the pretest and posttest scores) the disputes are 21.61. Then for student argumentation skills obtained an average percentage value of 83.33% from three aspects, namely claim, evidence and reasoning. Suggestions for readers, can be used as reference media for atwood machine practicum tools in learning with different materials and other learning methods.
Pengembangan Media Pembelajaran Interaktif Pada Materi Gelombang Cahaya Berbasis Android Menggunakan Articulate Storyline 3
Authors: Amalia Dhea Dina , Riswanto Riswanto , Alarifin Dedy Hidayatullah
Published: October 2023

Abstract : This development research aims to develop interactive learning media in the form of links that can be opened by students when studying light waves, especially in light polarization sub-materials that are suitable for use in the learning process. The interactive learning media produced from this development research aims to make learning more fun and students do not feel bored when learning takes place. Development research is a research method that produces or develops a particular product with the aim of testing the effectiveness of the product that has been developed. The research model used is the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The research was conducted by developing interactive learning media products using the Articulate Storyline 3 application. The developed product has been validated by media experts and material experts to get an average percentage score of 86.25%. The validation results show that the media is very feasible to use in learning, it is reviewed based on the results from the aspect of learning objectives and aspects of language. The results of the student response trial get an average percentage of 82%. Shows that the product is very attractive to students, it is reviewed based on the results from the design aspect
PERBANDINGAN HASIL BELAJAR DAN KUALITAS KOLABORASI SISWA ANTARA KELOMPOK KECIL DAN KELOMPOK BESAR DALAM PEMBELAJARAN MENGGUNAKAN METODE EKSPERIMEN
Authors: Nuraini Siti , Suseno Nyoto , Riswanto Riswanto , Harjati Purwiro
Published: October 2023

Abstract: The purpose of this research is to know the comparison of learningoutcomes and student collaboration quality between small group and largegroup in learning using experimental method,which learning outcomes arebetter between large groups and small groups, and which collaboration isbetter between large groups and small groups. Type of this research iscomparative with Posttest Only Control Group Design. Sampling is usingCluster Random Sampling. This study uses two classes, class X IPA 1 as asmall group with the number of students 33 students and class X IPA 2 as alarge group with the number of students 36 students. Data analysis this studyis using Chi-Square Test. The results showed that the difference of averageresult of study from small group was batter big group, it can be seen thattobserved 3,78 > ttable 2,00. Then, the average of collaboration quality of smallgroup was batter small group then big group, it can be seen that tobserved 2,73was > ttable 1,78. Suggestions submitted so that students' physics learningobtained optimal outcomes, it is advisable to apply experimental of smallgroup.Keywords: Result of study, collaboration, big group, small group, experiment
PENGEMBANGAN MEDIA EVALUASI PEMBELAJARAN BERUPA GAME BERBANTU APLIKASI CONSTRUCT 2 PADA MATERI HUKUM NEWTON
Authors: Yuliani Tri , Suseno Nyoto , Riswanto Riswanto
Published: October 2023

Abstract: The results of interviews with physics teachers at SMAN 1 Pekalongan that the media provided is very limited. The media in school are only pictures, props, and powerpoint. Lack of care in the props makes the props become dirty and damaged. The purpose of making media is: (1). Knowing media development (2). Know how to develop media. (3). Knowing student responses to media (4). Knowning the advantages and disadvantages of the media. This research was conducted using the 4D development model ( define, design, development, disseminate) according to Trianto (2011: 189). The results of the media expert test research received a percentage of 69% with eligible criteria, the result of the test of material experts with a percentage of 73,08% with eligible criteria. The results of the product trial are the student response questionnaire with a percentage of 80,55% with very good criteria. Presentation obtained from the three expert tests stated that the evaluation media of game application learning was 74,21% with eligible criteria. Based of the results of the research regarding the development of game application learning media, the media developed are suitable for use as learning media. Media shortages are limited question, the advantages are easy to use, in the form of game, and is offline. Suggestions for this product can be developed by more than one material, along with sample questions. Media must also be used with all OS and smartphone. Publish it more widely by placing it in the online application store and can be download for free.Keywords: Research And Development, Learning Evaluation Media In The Form Of Assisted Game Application Construct 2, Newton’s Law
PENGEMBANGAN MEDIA PEMBELAJARAN IPA BERBASIS E-LEARNING MENGGUNAKAN MOODLECLOUD UNTUK MENINGKATKAN MINAT BELAJAR SISWA
Authors: Widiastuti Monalisa Tri , Partono Partono , Riswanto Riswanto
Published: October 2023

Abstract: Presurvey results at SMP Negeri 2 Banjar Agung, SMP Negeri 3 Banjar Agung and SMP Negeri 1 Way Serdang, that internet media that have been used previously have disadvantages, namely that they cannot display material and examples in the form of animation and video as a whole in one website. Therefore, it is necessary to develop learning media that can complement the shortcomings in the previous media by using moodloud. Moodlecloud is an update of the moodle application that integrates with open source applications for full online conferencing, including video, audio, images and desktop sharing. This research is a development research (Research and Development) with development models ADDIE (Analysis, Design, Development, Implementation and Evaluation) and in this research using expert tests and small group tests were conducted to see the feasibility of products. The results showed that e-learning based science learning media using moodlecloud which was developed was very feasible with a percentage of product feasibility of 93,41% and able to increase student interest in learning with a n-gain value of 0,94.Keywords: media of learning, e-learning, moodlecloud, interest in learning
PENGEMBANGAN BUKU SAKU BERBASIS CERITA BERGAMBAR (KOMIK) PADA MATERI FLUIDA STATIS UNTUK KELAS XI SMA/MA
Authors: Muskholifah Muskholifah , Partono Partono , Riswanto Riswanto
Published: October 2023

Abstract: Research and development (Reseacrh and Development) of Learning Media for Book Based on Storytelling Pictures (Comics) Has been done on Static Fluids. The subjects of the study were 20 students of class XIMA NurulQodiri in the academic year 2018/2019. The development model used is ADDIE (Analysis, Design, Development, Implementation, and Evaluation). The instruments used in the study were expert validation sheets, student response questionnaires and teacher response questionnaires. Based on the results of the study it was found that the percentage of scores from experts for the material component is 85.40% and graphics which is 78.43% each located in very decent criteria. While the response of students is 86.00% and the response of teachers by 87.78% obtained through product trials is in very good criteria. So it is seen from the average of the instruments developed 84.40% of the results it can be concluded that the Learning Media Based on Story-Based Pocket Books (comics) in the Static Fluorescent Material can be used in the study of Physics in SMA.Keywords: Development, Pocket Books, Teaching Materials, Picture Stories, Comics.