bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kemampuan Pemahaman Konsep Matematis Siswa MTs dalam Menyelesaikan Masalah Matematika pada Materi Bentuk Aljabar
Authors: Putri Amanda , Nasution Eline Yanty Putri 
Published: June 2024

Pemahaman konsep merupakan kemampuan penting dalam matematis, tetapi capaiannya belum maksimal. Penelitian deskriptif ini bertujuan mendeskripsikan kemampuan pemahaman konsep matematis siswa kelas VIII MTs dalam menyelesaikan masalah matematika pada bentuk aljabar. Pengumpulan data menggunakan teknik tes dan dokumentasi. Instrumen tes berupa 3 buah soal uraian kemampuan pemahaman konsep matematis. Data yang dikumpulkan dianalisis secara kualitatif dengan cara mereduksi, penyajian, dan penarikan kesimpulan. Subjek penelitian ini adalah 8 orang siswa kelas VIII pada salah satu MTs di Tanah Kampung. Hasil penelitian menunjukkan bahwa kualifikasi kemampuan pemahaman konsep matematis 25% siswa dikategorikan sangat baik dalam mengenal bentuk aljabar dan unsur-unsurnya, mengidentifikasi unsur-unsur bentuk aljabar dari operasi bentuk aljabar, dan menyelesaikan operasi bentuk aljabar pada masalah kontekstual. Selanjutnya, kategori baik dicapai oleh 37,5% siswa, kategori cukup dicapai oleh 25% siswa, dan kategori kurang dicapai oleh 12,5% siswa. Tidak ditemukan siswa dengan kemampuan pemahaman konsep matematis sangat kurang.
Conceptual understanding is an important ability in mathematics, but the achievement is not optimal. This descriptive study aims to describe the ability to understand mathematical concepts of class VIII MTs students in solving mathematical problems in algebraic forms. Data collection using test and documentation techniques. The test instrument is in the form of 3 questions describing the ability to understand mathematical concepts. The collected data were analyzed qualitatively by reducing, presenting, and drawing conclusions. The subjects of this study were 8 class VIII students at one of the MTs in Tanah Kampung. The results showed that 25% of the student's qualifications for understanding mathematical concepts were categorized as very good at recognizing algebraic forms and their elements, identifying algebraic elements from algebraic operations, and solving algebraic operations on contextual problems. Furthermore, the good category was achieved by 37.5% of students, the moderate category was achieved by 25% of students, and the poor category was achieved by 12.5% ​​of students. There were no students with a very poor understanding of mathematical concepts.
The Ergonomic Intervention for Musculoskeletal Diseases and Pain among Oral Health Therapist
Authors: Sunarjo Lanny , Fatmasari Diyah , Rahmadhani Febby 
Published: June 2024

Musculoskeletal diseases and pain (MSDs) is commonly occurred among oral health therapist due to improper working positions. This condition can lead to work-related accidents, lower job satisfaction, and increased healthcare costs. In order to address this issue, ergonomic interventions encompassing cognitive, physical, and organizational aspects have been recommended to prevent the occurrence of MSDs. This study aims to assess the effectiveness of ergonomic interventions, specifically using the "EI" model, in alleviating MSDs among oral health therapists. The quality assessment related to pain utilized a validated standardized instrument. A purposive sample of 64 oral health therapists, working as dental assistants in Semarang, Indonesia, participated in the study. Data were gathered through a structured questionnaire incorporating the Nordic Body Map to identify the presence of pain. Additionally, a physiotherapist conducted an objective examination, assessing pain levels using the Visual Analog Scale (VAS). The results of the pain complaints test, as indicated by the Nordic Body Map, revealed a significant p-value of 0.001, with ∆ mean = 2.19 for the intervention group and 0.91 for the control group. Similarly, the pain level test using the Visual Analog Scale demonstrated a p-value 0.001, with ∆ mean = 30.38 for the intervention group and 14.91 for the control group. This suggests that the ergonomic model "EI" was significantly effective in reducing complaints of MSDs among oral health therapists.
Auto-evaluation of skull radiograph accuracy using unsupervised anomaly detection
Authors: Watanabe Haruyuki , Ezawa Yuina , Matsuyama Eri , Kondo Yohan , Hayashi Norio , Maruyama Sho , Ogura Toshihiro , Shimosegawa Masayuki 
Published: June 2024

BACKGROUND: Radiography plays an important role in medical care, and accurate positioning is essential for providing optimal quality images. Radiographs with insufficient diagnostic value are rejected, and retakes are required. However, determining the suitability of retaking radiographs is a qualitative evaluation. OBJECTIVE: To evaluate skull radiograph accuracy automatically using an unsupervised learning-based autoencoder (AE) and a variational autoencoder (VAE). In this study, we eliminated visual qualitative evaluation and used unsupervised learning to identify skull radiography retakes from the quantitative evaluation. METHODS: Five skull phantoms were imaged on radiographs, and 1,680 images were acquired. These images correspond to two categories: normal images captured at appropriate positions and images captured at inappropriate positions. This study verified the discriminatory ability of skull radiographs using anomaly detection methods. RESULTS: The areas under the curves for AE and VAE were 0.7060 and 0.6707, respectively, in receiver operating characteristic analysis. Our proposed method showed a higher discrimination ability than those of previous studies which had an accuracy of 52%. CONCLUSIONS: Our findings suggest that the proposed method has high classification accuracy in determining the suitability of retaking skull radiographs. Automation of optimal image consideration, whether or not to retake radiographs, contributes to improving operational efficiency in busy X-ray imaging operations.
Accentuation Networks of IT Students, Managers and Journalists: an Interdisciplinary Approach in Comparative Analysis
Authors: Deryugin P. P. , Kurazhev S. D. , Sazhenkova L. P. , Lebedintsev D. A. 
Published: June 2024

Introduction. Network diagnostic methods have an important advantage, which is the ability to integrate data from various scientific studies. In particular, the potential of the possibility of conducting diagnostics aimed at identifying the connectedness of the social and psychological characteristics of the accentuations of students of various fields of study is relevant.Methodology and sources. The conceptual ideas of various sciences involving the construction of a synthetic research methodology are used. The provisions of sociological science, social psychology and psychology on the nature, factors of formation and features of the manifestation of personality accentuations, as dependent on a wide variety of conditions, are integrated.Results and discussion. The obtained research results are presented in the form of accentuation networks, reflecting some features of the connectedness of accentuations. The main hypotheses of the study were confirmed, networks of accentuation of student journalists are built around mobile-emotional accentuations; networks of student managers are formed around aspirations to lead; networks of IT students are the most dense among the intellectual qualities and characteristics of students.Conclusion. Building networks of accentuation of students of various training profiles has a good prospect for the practice of diagnosis and correction of the educational process. Network modeling of the dynamics of the formation of students' accents as they study at the university provides a reliable basis for evaluating and managing the educational process.
ПІДТРИМКА ТОЧНОСТІ ЗНАЧЕНЬ КЕРУЮЧИХ ПАРАМЕТРІВ ЕЛЕКТРОГІДРАВЛІЧНОГО НАВАНТАЖЕННЯ ПРИ ШТАМПОВЦІ З ПРОСТОРОВО-ЧАСОВИМ КЕРУВАННЯМ
Authors: Тараненко М. Є. , Кобріна Н. В. 
Published: June 2024

The article is devoted to ensuring the stability of the technological process of electrohydraulic stamping of thin-sheet large-sized parts. This process is realised on multi-contour EH presses equipped with the capabilities of space-time control of the workpiece load. This control ensures the production of high-quality parts and high technical and economic performance of the process.The control parameters include the geometry of the press energy release zone, the loading sequence of the workpiece sections and the value of the inter-electrode distance. The first parameters change little under specified operating conditions. The third parameter is subject to change over a specified number of discharges due to cavitation and EDM erosion. Violation of the specified value of the interelectrode distance leads to a violation of the energy release mode and its loss.As a result of the experiments, the mechanism of cavitation destruction of the high-voltage insulation of the working electrode was determined and a solution was proposed for the conditions of winding the high-voltage insulation with a glass fibre roving, as well as electrical insulation in the areas adjacent to the discharge zone.Several variants of the design of the end part of the working electrode, which is still directly in the EG discharge zone, were experimentally investigated.The ratio of the duration of the pre-discharge stage to the characteristic time of the discharge circuit was chosen as a criterion parameter of resistance to electrical erosion of the discharge edges. The duration of the pre-discharge stage was determined from the discharge voltage oscillograms.According to the given dependences of the above ratio on the number of discharges, the best design from the considered options was determined.The used value of this ratio for the selected design corresponds to ~ 2500 discharges at a voltage of 20...25 kV. This number of discharges is on average comparable to the operation during five shifts, after which it is necessary to restore the discharge edges of the electrode. To simplify the operations of changing electrodes, we propose a design in which the electrodes are fixed by clamping them with elastic washers.It is concluded that the goal has been achieved: maintaining stable operation of the EG press with high technical and economic indicators of the entire technological process at a given quality of parts manufacturing.It is concluded that the goal has been achieved: maintaining stable operation of the EG press with high technical and economic indicators of the entire technological process at a given quality of parts manufacturing.Objective of the work - is to evaluate the effectiveness of the proposed technical solutions to increase the stability of the working electrodes and simplify their repair and restoration.
Diagnostic study of Toxoplasma gondii in students of Thi-Qar university-Iraq by Real- Time PCR
Authors: Al-Mosawi Rabab 
Published: June 2024

Toxoplasma gondii is a unique intracellular parasite, which infect a large proportion of the world, population, butclinically un commonly causes significant disease. The present study was performed for the first time in Thi-Qarprovince to estimate the prevalence of toxoplasmosis among university students . Venous blood samples were collected from 319 (111 males and 208 females) apparently healthy students ,they have ages between (18-42) years attended from different colleges of Thi-Qar university-Iraq, during the period from October 2013 to April 2014. Enzyme linked Immunosorbant Assay (ELISA), was used to evaluate the presence of anti-Toxoplasma IgM and IgG antibodies and detection of B1 gene of T.gondii DNA by Real-Time Polymerase Chain Reaction(RT-PCR). The results indicated that 70 (21.94%) of students were exposed positive for anti-Toxoplasma antibodies,17 (5.33%) of them had IgM,38 (11.91%) had IgG, and 15 (4.70%) had both IgM and IgG. Statistically, significant difference between them. The results showed significant difference between males and females in rate of positive for anti- Toxoplasma antibodies, which recorded 24 (7.52%) and 46 (14.42%) respectively . Besides the serological diagnosis of T.gondii Real-Time PCR (RT-PCR) technique was used to confirm the infection with T.gondii by detection B1 gene of T.gondii DNA in the blood of students. out of 319 students only 6.26% showed positive toxoplasmosis among those 8(2.50%)were males and 12(3.76%) were females. The positive result in RT-PCR analysis were distributed on the patterns of the antiToxoplasma antibodies by ELISA test , it was no found any positive blood samples with IgM,IgG.
Study of optimum conditions for Polyhydroxybutyrate production from local isolate of Bacillus cereus
Authors: Al-Sahlany Shayma , Al-Sahlany Shayma 
Published: June 2024

The highest Polyhydroxybutyrate (PHB) production from Bacillus cereus B5 were 6.2 k/ L, biomass 8.4 g/ L and 73.8 % , the yield by the using optimum conditions , incubation temperature 35 C, for 48 hours aerobically by using shaking incubator on 150 rpm / min , 2% inoculum volume, the pH value was 7, and the production media was content 1% glucose as carbon source and 0.25 % peptone as nitrogen source.
Geochemical evaluation pollution for some heavy metals in basra soil
Authors: Al-Bedhany Abbas 
Published: June 2024

The present study included determine concentrations of certain heavy metals (lead, cadmium, cobalt, copper,zinc, nickel, iron and manganese) of surface soils in selected areas of North, South and west of Basra governorate consisted of four seasons from autumn 2013 to summer 2014 by using Flame atomic absorption spectrum. The seasonal variation of these elements range from lowest value (1.80µg/g) for cadmium in winter and the highest value (13033.18µg/g) for iron in the summer. Total organic carbon TOC% and grain size analysis where also determined and there is not correlation between them, these factors suggesting that working in high concentrations of certain heavy elements in Basra than in natural soils is pollution from human activities. Geochemical index (Igeo) where also determined that average concentration ranged from less value (3.32) for cadmium and the highest value (18.81) for iron. While the Enrichment factor (EF) range from less value (0.0005) for manganese and highest value (0.414) for cadmium. Finally Contamination factor (CF) range from less value (0.46) for zinc and the highest value (223.21) for iron. Basra contaminated soil with heavy elements increase is attributable to human and industrial activities such as increased transportation vehicles and burning gasoline and from other facilities such as hospitals, power plants and oil companies, as well as the use of phosphate fertilizers in agricultural areas, as well as some industrial parks to increase concentrations of some heavy metals in the soil.
Metabolic syndrome in Iraqi patients with psoriasis: A comparative study
Authors: Bdul Hassen Naif Alaa 
Published: June 2024

Background: Psoriasis patients are at increased risk of developing the metabolic syndrome (MS). Proinflammatory cytokines such as tumor necrosis factor-α, interleukin-6, interleukin-23, interleukin-17 that are increased in the psoriatic plaques are known to contribute to features of MS such as hypertension, dyslipidemia and insulin resistance.Aims: (1) To study the prevalence of MS in patients with psoriasis. (2) To study the effect of duration of psoriasis on prevalence of MS.Materials and Methods: A hospital based comparative study was conducted involving 40 adult patients withpsoriasis and 40 age and sex-matched controls. All participants were evaluated for components of MS.Results: Both groups included 29 males and 11 females. The mean age of the cases and controls were 39.5 years and 38.85 years, respectively. MS was present in 18 out of 40 (45%) patients with psoriasis and 14 out of 40 (35%) controls; odds ratio (OR= 1.519 CI 0.61 to 3.73 p value =0.362). Higher age and female gender correlated with the presence of MS in psoriasis patients. Psoriasis cases with MS are older and had longer disease duration compared with psoriatic patient without MS. The difference was statistically significant.Conclusion: There is higher prevalence of MS in psoriatic patients. However, the duration of psoriasis correlatedclosely with prevalence of metabolic syndrome.
Threats and Solutions to Mobile Devices
Authors: Ghalib Ali 
Published: June 2024

Mobile devices have now surpassed personal computers (PC) in terms of popularity. Smartphones now come withpowerful multi-core processors, loaded with considerable amounts of memory and are capable of carrying out complex operations with relative ease. However, this increase in technology has meant that it has now become susceptible to some of the same problems that PC‘s face. In this paper, I will talk about the malware, virus and other security problems facing mobile devices and their possible solutions.
The correlation between plasma malondialdehyde levels and pain in adolescent females diagnosed with primary dysmenorrhea
Authors: Ocktariyana Ocktariyana , Lestari Dian , Kadir Abdul , Listrianah Listrianah , Handayani Handayani 
Published: June 2024

Background: Endometrial inflammation factors play a crucial role in the common pathophysiology of primary dysmenorrhea. Malondialdehyde (MDA), a byproduct of inflammatory processes, might be correlated with primary dysmenorrhea in adolescents.
Objective: To assess plasma MDA levels in patients with primary dysmenorrhea.
Methods: This cross-sectional study involved the collection of blood samples from 23 teenage females with primary dysmenorrhea and 23 age-matched individuals without this condition. Plasma MDA levels were quantified through spectrophotometry. The independent t-test was employed to ascertain the disparity in plasma MDA levels between the two groups, while the Pearson correlation test was utilized to analyze the relationship between pain severity and oxidative stress levels.
Results: Plasma MDA levels were significantly higher in females with primary dysmenorrhea than in the control group (0.631 ± 0.105 and 0.395 ± 0.076, respectively). A significant difference in oxidative stress levels was observed between the case and control groups (p<0.001). Furthermore, a robust positive correlation was observed between plasma MDA levels and pain severity in adolescent females with dysmenorrhea (r2 = 0.564, p<0.001).
Conclusion: The plasma MDA is increased in adolescent females with primary dysmenorrhea.
Основні напрямки підвищення ресурсу та ефективності ПЕЛ ПС СУЗ для ядерних реакторів України
Authors: Zuyok V. , Rud R. , Tretyakov M. , Chernov I. , Kushtym Ya. , Grudnitskii V. 
Published: June 2024

Проведено систематизацію та узагальнення нейтронно-фізичних характеристик відомих нейтронно-поглинальних матеріалів (B4C, Hf, Ag-In-Cd, Dy2O3·TiO2, Eu2O3), які використовувались або використовуються в конструкції ПС СУЗ водно-водяних реакторів. Наведено результати розрахунків фізичної ефективності поглинання нейтронів, зміни ізотопного складу, радіоактивності нейтронно-поглинальних матеріалів ПС СУЗ реакторів типу ВВЕР-1000 (B4C, Hf, Dy2O3·TiO2). Запропоновано способи підвищення ефективності поглинання нейтронів ПЕЛ ПС СУЗ, основні з яких, що є прийнятними для всіх розглянутих матеріалів ‒ це збільшення густини та діаметра нейтронно-поглинального матеріалу ПЕЛ.
Серед розглянутих матеріалів найбільш прийнятну ефективність поглинання нейтронів мають металевий гафній з діаметром поглинальної частини 8,2 мм (варіант використання гафнію у відкритому вигляді, без оболонки) та гафнат диспрозію в таблетковому варіанті наповнення ПЕЛ. Вихідна відносна ефективність поглинання нейтронів металевим гафнієм становить 88 %, а гафнатом диспрозію ‒ 84 %. Використання цих матеріалів у нижній частині ПЕЛ дозволить підвищити ефективність всього ПЕЛ навіть у разі збільшення нижньої частини з 300 мм до 500 мм.
Розглянуто можливість використовувати гафнат європію (стехіометрія Eu2HfO5) замість карбіду бору у верхній частині ПЕЛ (від 300 мм до 3500 мм). Показано, що гафнат європію у вигляді таблеток діаметром 6,85 мм та густиною 8,0 г/см3 матиме вихідну ефективність поглинання нейтронів 95,6 % від ефективності карбіду бору. Висока ефективність поглинання нейтронів дозволить використання в нижній частині менш ефективних (n,γ) поглиначів, як-от гафнат диспрозію чи гафнію з довжиною поглинального стовпа більше 300 мм, імовірно, без порушення нейтронно-фізичних критеріїв працездатності ПЕЛ (потребує додаткових розрахунків у складі конкретного паливного завантаження).
HUMAN RIGHTS VIOLATIONS AGAINST OIL PALM PLANTATION WORKERS IN WEST KALIMANTAN REGION
Authors: Naufal Rabbani Abdul Ghani , Bungo Julianto Arthania Callista , Ariska Argun Gayatri Ni Komang , Mustika Karina Padang Galuh Putu Ananda 
Published: June 2024

<p>Indonesia, a leading palm oil producer, faces a dilemma between the palm oil sector's positive economic contribution and its negative impact on labor rights. Despite creating jobs and economic growth, the sector is often associated with rights violations such as corruption, job insecurity, low wages, forced labor, occupational safety, child labor, and social security. Case studies in West Kalimantan and Central Sulawesi highlight the issues that need to be addressed to strike a balance between economic development and human rights protection in Indonesia's palm oil sector.</p><p> </p><p>Keywords: Human Rights, Plantation Labor, Oil Palm, Worker</p>
PERUBAHAN-PERUBAHAN PENTING TERKAIT HAK CIPTA PASCA UNDANG-UNDANG NOMOR 28 TAHUN 2014 TENTANG HAK CIPTA
Authors: S Sujana Donandi 
Published: June 2024

<p><em>Act no. 28 Year 2014 is the latest regulation concerning copyright. Act no. 28 2014 is expected to brought important changes that could be useful in improving protection and law enforcement of copyright in Indonesia. This research focus on important changes related to copyright after act no. 28 2014 was legalized and its legal consequences. Method used in this research is normative legal research which specifically described changes related to copyright based on Act no. 28 2014 .The results and discussion shows that Act no. 28 2014 brings important transformation of copyright such as: economic rights protection that more favors to the creator, more effective dispute settlement, copyright can be fiduciary security , and the emergence of Lembaga Managemen Kolektif.</em></p>
DAMPAK KEPAILITAN PENGEMBANG RUMAH SUSUN TERHADAP TRANSAKSI JUAL BELI RUSUN (STUDI KASUS RUSUNAMI KEMANGGISAN RESIDENCES)
Authors: Kristianto Fennieka 
Published: June 2024

<p><em>The uncompleted Flats construction and not provided the Certificate of Property Rights on Flats Unit (SHM Flats Unit) make Flats Unit’s purchaser only has the Conditional Sale and Purchase Agreement on Flats Unit (CSPA Flats Unit), therefore the Flats purchasers bear the consequences of bankruptcy on the developer. As a result of the bankruptcy of the Flats transaction raises legal issues related to the legal status of ownership of Flats Unit that purchaser has paid the price. Do paid Flats Units become part of the bankruptcy estate of bankrupt developer? This paper aims to determine the impact of bankruptcy developer on flats’ purchasers and their legal status of the Flat Unit’s ownership by probing the case in Rusunami Kemanggisan Residences. This qualitative descriptive study, using research methods literature. Based on content analysis obtained the following conclusions. Bankruptcy resulted in a general seizure on properties of Flats developer, including Flats Unit which has been fully paid by the purchaser. The legal status of purchaser of Flats Unit who has paid payment based CSPA Flats Unit, not as owners, but as unsecured/concurrent creditors of the developer because it has not handed over the ownership of Flats Unit both factually and legally from the developer to the purchaser. As a result, the ownership rights of Flats Unit legally still on developer</em><em> </em><em>and become the developer’s bankruptcy assets. Suspension of Obligation for Payment of Debt (PKPU) or mediation as an alternative dispute resolution is more favorable to developers and Flats purchaser.</em></p>