bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Appraisal Interface with Productivity in Selected Nigerian Public Enterprises
Authors: Dr. Tejumade O. Siyanbola  , Dr. Bolanle W. Shiyanbade  , Dr. Idowu E. Olubodun
Published: December 2024

In this research, the interconnection between Performance Appraisal (PA), its methods, and efficiency in two selected Nigerian public sector enterprises was appraised to identify the PA methods adopted and evaluate how such methods influence the enterprises' overall performance for their sustainability.
Data was sourced from varied employee categories (277) of the enterprises sampled using a structured quantitative survey questionnaire. Analysis was done quantitatively with descriptive (e.g., cross-tabulations, means, and standard deviations) and inferential (e.g., Categorical Regression [CATREG] analysis) statistics.
From the findings, the model for individual employee productivity explained about 69% of the variation in their output (Adjusted R2=68.9%), while that for overall organisational productivity explained 70.8% of the changes in the enterprises' output. More specifically, only two of the eight PA methods adopted by the enterprises were significant in explaining the changes in both employees and organisational performance. In descending order of importance, the PA methods are Management By Objectives [MBO] F=13.715 and F=94.900, respectively, and Behavioural Rating Scale F=5.837 and F=7.344 respectively; all four results at p<0.05). The other three PA-related issues impact employees' performance. In addition, in descending order, are employees' belief that PA outcomes influence their ultimate productivity (F = 47.581), clarity in explaining the PA standards to employees (F=4.778), and employees' belief in the adopted PA system's validity (F=3.342) all at p<0.05. As for the organisations' productivity, six additional issues influence this; in descending order, they are employees' belief of PA linked to improved organisational performance (F=180.406), their promotion (F=48.202), improved salary (F=34.204), opportunities for training and development (F=12.720), better people management from supervisors (F=5.150) and the importance of rating employees in line with their individual responsibilities (F=4.613).
The study concluded that an effective PA system that employees and management believe in can enhance employees' productivity and boost the public enterprise's bottom line.
Influence of Classroom Dynamics on Students’ Academic Performance in Day Secondary Schools in Mwingi East Sub County, Kitui County, Kenya
Authors: Peter Mbiti Kalonzo  , Dr. Beth Mwelu Mutilu
Published: December 2024

The study aimed to investigate the influence of classroom dynamics on student academic performance in day secondary schools in Mwangi East Sub-County, Kitui County, Kenya. The objectives of the study were:

To evaluate the influence of class size on academic performance,
To examine the influence of school rules and regulations,
To assess the influence of parental involvement in school activities and
To examine the influence of teacher's class supervision on academic performance.

Goal-Centered Theory (GCT) was used to explain the dynamics of learning. The target population of the study was 2280. 341 responses were obtained using Slovin sample formulae. The random sampling method was used to select schools, while the stratified sampling method was used to select the sample size from principals, class teachers and students from selected secondary schools. Data collection was done using questionnaires, interview schedules and observations. Validity and reliability of Research Instruments were conducted to ascertain the internal consistency and legitimacy of the research instruments. Data analysis was done using SPSS (version 25). Analyzed data was presented in the form of frequency tables, percentages, graphs and charts. The researcher found that on the first objective, the test of hypothesis r-calculated value of 4.88 was greater than the R-critical value of 2.17 at a p-value ~ 0.05, and the null hypothesis was rejected. On the second objective, the test of hypothesis r-calculated value of 4.88 is greater than the R-critical of value 2.17 at p-value ~ 0.05, and the null hypothesis was rejected. On the third objective, the test of hypothesis r-calculated value of 4.11 is greater than the R-critical of value 3.1 at p-value ~ 0.05, and the null hypothesis was rejected. Lastly, on the fourth objective, the test of hypothesis r-calculated value of 5.2 was greater than the R-critical of value 4.2 at p-value ~ 0.05, and the null hypothesis was rejected. The study concluded that there was evidence of reduced class time for syllabus completion for teachers and low mastery of contents due to pressed instructional time. Rules and instructions in the classroom environment help to improve the class learning procedures, as evidenced by the respondent responses. Timely class attendance was paramount for students' academic performances. Interactive demonstrations for problem-solving techniques were used by selected teachers, thus making teachers have different opinions, and there have been high records of insufficient learning materials that resulted in poor class management and attributed to the contribution of poor performance. The researcher recommended that teachers learn different methods of managing class sizes. Headteachers and teachers should coordinate in drafting and enforcing school rules and regulations, and every teacher should have working strategies that promote class integration.
Characteristics of Present Tectonic Stress Field in Kon Plong, Viet Nam Area and Surrounding Areas through Geological Indicators
Authors: Loi Loc, Nguyen  , Thanh Sang, Nguyen  , Thi Thu Thuy, Nguyen
Published: December 2024

The present geodynamics of the Kon Plong, Kon Tum area and its surroundings are characterized by 03 structural blocks and 12 sub-structural blocks, divided by 17 major regional fault systems that have signs of activity at present. The present tectonic stress field in the region is a strike–slip–normal faulting regime with a maximum compression axis of 33904, a minimum compression axis of 065Ð02, and the intermediate axis dips vertically. The stress ratio is 0.51. In the Dak Ha and Mang Den sub-blocks, the stress field tends to shift towards normal or normal–strike–slip faulting with an NW-SE extension axis (219 – 250°) because of the effect of reservoir impoundment.
PERLINDUNGAN HUKUM TERHADAP MASYARAKAT ATAS KEGIATAN STOCKPILE BATUBARA DI KABUPATEN MUARO JAMBI
Authors: Herman Hendra , Widowaty Yeni
Published: December 2024

ABSTRAKKeberadaan stockpile batubara di Kabupaten Muaro Jambi perlu dilakukan pengaturan. Stockpile batubara yang berada di pinggir Sungai Batanghari dan disekitar lokasi pemukiman penduduk harus dipindahkan karena dapat menyebabkan pencemaran dan perusakan lingkungan. Pengaturan terhadap stockpile batubara sebagai upaya perlindungan hukum bagi masyarakat yang berada disekitar lokasi stockpile batubara. Tujuan penelitian ini adalah untuk mengetahui pengaturan hukum atas kegiatan stockpile batubara di Kabupaten Muaro Jambi dan untuk mengetahui upaya perlindungan hukum yang dilakukan Pemerintah Kabupaten Muaro Jambi terhadap masyarakat yang terkena dampat kegiatan stockpile batubara di Kabupaten Muaro Jambi. Metode Penelitian yang digunakan adalah penelitian yuridis empiris atau sosio legal terhadap perilaku individu atau masyarakat, organisasi atau lembaga hukum terhadap penerapan atau berlakunya hukum. Hasil penelitian menunjukkan adanya kekosongan hukum dalam pengaturan stockpile batubara dan tidak tegasnya Pemerintah Kabupaten Muaro Jambi melakukan upaya penegakan hukum terhadap stockpile batubara yang telah melakukan pencemaran dan perusakan lingkungan.Kata kunci: perlindungan hukum; pencemaran dan perusakan lingkungan; stockpile batubara.
ABSTRACTThe existence of a coal stockpile in Muaro Jambi Regency needs to be regulated. Coal stockpiles located on the banks of the Batanghari River and around residential areas must be moved because they can cause pollution and environmental damage. Coal stockpile regulation as an effort to protect the law for the community around the coal stockpile location. The purpose of this study was to find out the legal arrangements for coal stockpile activities in Muaro Jambi Regency and to find out the legal protection efforts made by the government of Muaro Jambi Regency for communities affected by coal stockpile activities in Muaro Jambi Regency. The research method used is empirical juridical or socio-legal research on the behavior of individuals, communities, organizations, or legal institutions in the application or enactment of law. The results of the study indicate that there is a legal vacuum in regulating coal stockpiles, and the Muaro Jambi Regency Government is not firm in making efforts to enforce the law against coal stockpiles, which have polluted and damaged the environment.Keywords: coal stockpile; legal protection; pollution and environmental destruction.
MENYOAL KONSEP POLUSI DAN DEPLESI DALAM HUKUM LINGKUNGAN INDONESIA: PERLUKAH?
Authors: Mulyono Andreas Tedy
Published: December 2024

Hukum lingkungan di Indonesia telah mencantumkan pengertian polusi dan deplesi secara eksplisit. Pada satu sisi, pengertian harfiah polusi berbeda dengan deplesi tapi di sisi lain, norma-norma teknisnya didalilkan sama satu dengan yang lainnya.  Permasalahannya, bagaimana perkembangan pengertian polusi dan deplesi tersebut mempengaruhi hakikat pengaturan dan penegakan hukum lingkungan di Indonesia. Untuk menguraikannya penelitian ini menggunakan metode yuridis normatif dengan pendekatan konsep (conceptual approach), pendekatan undang-undang (statute approach), dan pendekatan kasus (case approach). Hasil penelitian ini menunjukkan bahwa pemikiran kontemporer terkait konsep polusi dan deplesi pada perkembangannya berasal dari lini masa yang berbeda.  Selain itu, para pemangku kepentingan di Indonesia selama ini mengacu pada dasar undang-undang yang berlaku, yaitu Undang-Undang Nomor 32 Tahun 2009 tentang Perlindungan dan Pengelolaan Lingkungan Hidup, dengan tanpa membedakan konsep polusi dan deplesi secara jelas.  Hal ini berdampak pada pembentukan peraturan perundang-undangan terkait yang tidak secara jelas membedakan polusi dan deplesi. Adapun dalam penerapannya, dalil-dalil yang digunakan oleh para pihak yang berperkara, termasuk juga dalam amar putusan hakim, juga cenderung tidak membedakan kedua konsep tersebut dengan jelas.  Kesimpulannya, penyusunan norma-norma dan penerapannya pada kasus-kasus lingkungan hidup yang tidak membedakan konsep polusi dan deplesi berpotensi menimbulkan masalah peraturan perundang-undangan yang tidak sinkron dan penegakan hukum yang tidak konsisten.
KESADARAN HUKUM MASYARAKAT DALAM PELESTARIAN PENYU: STUDI KASUS TERHADAP UPAYA KONSERVASI DI PANTAI KEMBAR KEBUMEN
Authors: Kartono Kartono , Pamuji Kadar , Nasihuddin Abdul Azis , Hartini Sri , Yuliantinigsih Aryuni , Fatah Muhammad Hamdan
Published: December 2024

ABSTRAKIndonesia adalah habitat enam jenis penyu dari tujuh penyu yang ada di dunia. Mereka dilindungi oleh UU No. 5 Tahun 1990 tentang Konservasi Sumber Daya Alam dan Ekosistemnya, serta terdaftar dalam satwa yang masuk daftar merah di IUCN. Salah satu tempat yang banyak menjadi tempat peneluran penyu adalah di Pantai Selatan Jawa Tengah, khususnya Pantai Kembar, Kabupaten Kebumen. Tulisan ini bertujuan untuk menganalisis kesadaran hukum masyarakat dalam upaya konservasi penyu di kawasan Pantai Kembar, Kecamatan Puring, Kabupaten Kebumen. Penelitian ini merupakan penelitian kualitatif eksploratif dengan dengan pendekatan hukum. Penelitian dilakukan di kelompok konservasi penyu Pantai Kembar, Kebumen. Pengumpulan data dilakukan dengan kuesioner sebagai data utama, serta dilakukan wawancara, dan pengamatan. Hasil penelitian menunjukkan bahwa kesadaran hukum masyarakat terhadap penyu sebagai satwa liar yang dilindungi sudah tinggi. Namun, faktor sosial budaya dan ekonomi masih memberikan pengaruh terhadap upaya konservasi penyu. Kendala dalam konservasi penyu bersifat multi aspek, diantaranya sosial budaya yang bertentangan dengan konservasi terutama pada tradisi melarung laut, belum optimalnya pengetahuan hukum yang dimiliki masyarakat setempat, dan belum tersedianya instrumen hukum yang spesifik di daerah sebagai pedoman teknis dalam pengelolaan konservasi penyu. Kata kunci: kesadaran hukum, konservasi, penyu
ABSTRACTIndonesia is the habitat of six types of turtles out of the seven turtles in the world. They are protected by Law no. 5 of 1990 concerning Conservation of Natural Resources and Ecosystems, and is listed as an animal on the IUCN red list. One of the places where many turtles nest is on the South Coast of Central Java, especially Kembar Beach, Kebumen Regency. This article aims to analyze the community's legal awareness in turtle conservation efforts in the Kembar Beach area, Puring District, Kebumen Regency. This research is exploratory qualitative research with a legal approach. The research was conducted at the Kembar Beach turtle conservation group, Kebumen. Data collection was carried out using questionnaires as the main data, as well as interviews and observations. The research results show that public legal awareness of turtles as protected wild animals is high. However, socio-cultural and economic factors still have an influence on turtle conservation efforts. Constraints in sea turtle conservation are multi-faceted, including socio-culture that conflicts with conservation, especially in the tradition of sea turtle throwing, not optimal legal knowledge of the local community, and the unavailability of specific legal instruments in the Region as technical guidelines in the management of sea turtle conservation.Keywords: legal awareness, conservation, turtles.
Pemanfaatan HDPE (High Density Polyethylene) Menjadi Produk Komersial Pada KWT Meuseuraya Sidoarjo
Authors: Dhamayanthi Wenny , YA Ratih Puspitorini , Wardani Dyah Kusuma , Andini Paramita , Hudori Huda Ahmad , Pratama Fredy Eka Ardhi , Atmajaya Aditya Wahyu Winadi
Published: December 2024

The Community Service Program at the Meuseuraya Women's Farmers Group (KWT), Lebo Village, Sidoarjo, focuses on utilizing plastic bag waste (HDPE) into handicraft products with economic value. This activity includes field surveys, lectures, tutorials, discussions, practices and monitoring. The survey results show that there is a large amount of plastic waste that is not processed properly, causing environmental problems. Counseling and training were carried out to improve the skills of KWT women in processing plastic waste into products such as plastic flowers, bags and home decorations. Plastic waste selection and sorting processes are also introduced to ensure the quality of raw materials. This activity succeeded in increasing participants' knowledge and skills, as well as providing plastic waste-based entrepreneurship opportunities that can increase family income and reduce negative environmental impacts. KWT mothers showed high enthusiasm in utilizing plastic waste, creating creative products with high selling value.
Peningkatan Kinerja Fasilitas Simpul Moda Sebagai Katalis Layanan Transportasi yang Terintegrasi(Studi Kasus: Layanan LRT Lintas Cawang-Cibubur)
Authors: Prasetyo Febri Nur
Published: December 2024

Salah satu layanan transportasi perkotaan yang memiliki ridership yang tinggi adalah LRT Jabodebek dengan tren pertumbuhan sebanyak 37.000 penumpang pada Desember 2023 menjadi 50.000 penumpang per Februari 2024 berdasarkan data dari Kementerian Perhubungan RI. Peningkatan layanan yang perlu mendapat perhatian pada LRT Jabodebek adalah pada koridor Cawang-Cibubur. Koridor ini meliputi empat stasiun yang masing-masing belum memiliki konektivitas dan jangkauan fasilitas layanan yang memadai karena dari segi tata guna lahan (utara dan selatan) dipisahkan oleh jalan tol. Akibatnya, diperlukan integrasi fasilitas antarmoda untuk dapat menjadi katalis layanan transportasi yang terintegrasi secara komprehensif. Objek dalam penelitian ini adalah simpul moda LRT pada koridor Cawang-Cibubur yang meliputi empat stasiun tipikal sehingga metode penelitian ditujukan pada salah satu simpul tersebut. Penelitian ini bertujuan untuk mengevaluasi kinerja layanan simpul moda pada kondisi existing dari persepsi penumpang sesuai dengan kategori dan indikatornya yang sudah ditetapkan. Selanjutnya, hasil evaluasi dimaksud ditransformasikan ke dalam penilaian kinerja integrasi dari sisi proximity/kedekatan beserta alternatif transformasi kedekatan fasilitasnya untuk menjadi rekomendasi peningkatan pelayanan integrasi antarmoda. Adapun metode yang digunakan adalah importance performance analysis (IPA) dengan melakukan uji validitas dan reliabilitas untuk memastikan instrumen penelitian berupa pertanyaan-pertanyaan untuk responden dapat dituangkan dalam kuesioner sehingga dapat digunakan untuk menilai kinerja layanan berdasarkan persepsi pengguna. Selain itu, modal interaction matrix (MIM) juga digunakan untuk dapat mengukur kinerja integrasi melalui kedekatan antarfasilitas beserta alternatifnya. Adapun output yang didapatkan adalah bahwa pada hasil analisis IPA terdapat tiga belas atribut/indikator yang menjadi prioritas utama untuk dilakukan perbaikan kinerja. Selanjutnya dilakukan pengukuran proximity/kedekatan beserta alternatif transformasi untuk atribut/indikator tersebut dan didapatkan bahwa alternatif 3 menjadi rekomendasi peningkatan fasilitas yaitu menjadikan sebagian besar fasilitas didekatkan khususnya yang mencakup konektifitas kawasan.
Utopías Migrantes y Movilidad Laboral en la Comunidad de Madrid: Trayectorias, Actos de resistencia y Perspectivas de Futuro
Authors: Carril Zerpa Alai , Jacott Jiménez Liliana , Fuentes Lara Cristina
Published: December 2024

Este estudio explora las trayectorias migratorias, actos de resistencia y utopías de la población migrante en relación con la movilidad laboral, utilizando la utopía como método (Levitas, 2017). Este enfoque permite imaginar futuros alternativos a través de una reflexión crítica sobre nuestras responsabilidades éticas. Mediante un enfoque cualitativo crítico, se emplean técnicas de mapeo (Futch y Fine, 2014) y journey mapping (Annamma, 2017) en grupos discusión donde los mapas facilitan la interacción dialógica. Los resultados indican que las trayectorias migratorias influyen en la percepción de una migración más justa, considerando barreras estructurales como la raza y el género. Las soluciones propuestas se centran en reconocer a la población migrante como ciudadanos de pleno derecho, enfatizando la libertad de movimiento y la participación activa en decisiones, así como la necesidad de combatir el racismo.
Free-Air Simulation Sensitivities on NASA’s High-Lift Common Research Model
Authors: Zauner Markus , Sansica Andrea , Matsuzaki Tomoaki , James Lusher David , Hashimoto Atsushi
Published: December 2024

To reduce the time-to-market of future aircraft, it is crucial to predict the flight envelope accurately before building prototypes for flight tests. The High-Lift Prediction Workshop series aims to assess the numerical prediction capability of current computational fluid dynamics technology considering the high-lift version of the NASA’s Common Research Model. The present work contributes to these collaborative efforts, quantifying sensitivities for Reynolds-averaged Navier–Stokes (RANS)–based steady, unsteady, and hybrid RANS/large-eddy-simulation scale-resolving approaches. Uncertainties associated with the choice of turbulence model, initialization strategies, grid resolution, and iterative convergence at free-air conditions are covered. Near stall, a large spread of RANS results was observed for different turbulence models and initialization strategies, while iterative convergence appeared less crucial for the present simulations. Steady and unsteady RANS simulations were unable to predict the correct flow physics near [Formula: see text], even for large grids. Delayed detached-eddy simulations (DDES), however, showed good accuracy compared with wind-tunnel experiments and predicted [Formula: see text] with an error of around 5%. Compared to steady RANS, the computational cost of DDES was a factor of 10 higher. Lessons learned and potential best-practice strategies are shared to aid future studies. While warm-started RANS simulations using Spalart–Allmaras models are recommended at lower angles of attack, scale-resolving methods are required near stall.
Block Interface Flux Reconstruction Method with Nonlinear Scheme for Aeroacoustics Problem
Authors: Yu Peixun , Zhang Wei , Zhou Jie , Xiao Heye , Wang Dong , Wang Hui
Published: December 2024

Nonconforming grids, which can simplify the generation of meshes for complex shapes and reduce the number of meshes, are commonly employed in addressing multiscale aeroacoustics numerical simulation challenges. This approach allows for the simulation of sound propagation processes at a reasonable cost. By utilizing the sixth-order weighted compact nonlinear hybrid scheme (WCNHS) with a piecewise exponential mapping function (WCNHS_Pe) and incorporating ghost grid blocks, a method has been developed to reconstruct interface flux for nonsingle-scale multiblock structured grids. The variable values of the ghost grid at the grid boundary are determined through high-order optimization interpolation methods. Furthermore, different time steps can be implemented for each subdomain to accommodate corresponding grid scales. To address coupling across multiple grid sizes, an interface flux reconstruction method is applied to numerically simulate various scenarios, including Sod shock tube problem, the Shu–Osher problem, Gaussian pulse propagation on two-dimensional nonconforming grids, sound propagation on discontinuous interfaces, sound radiation from three cylinders, sound generated by weak shock–vortex interaction, Gaussian pulse propagation on three-dimensional nonconforming grids, and slat noise prediction. The results demonstrate that the high-order finite difference method established in this study exhibits superior capability in capturing discontinuities as well as higher resolution and lower dispersion on nonconforming multisize meshes, making it suitable for simulating linear and nonlinear acoustic problems.
USTANICI PRIZNATI KAO ZARAĆENA STRANKA NEMEĐUNARODNIH ORUŽANIH SUKOBA U TRADICIONALNOM I SUVREMENOM MEĐUNARODNOM PRAVU
Authors: Rusan Novokmet Rutvica
Published: December 2024

The focus of traditional international legal regulation of armed conflicts was primarily on international armed conflicts, which resulted in legal lacunae in respect of the limitation of the conduct of the parties to internal armed conflicts before the Geneva Conventions on the Protection of Victims of War and Additional Protocols to these conventions had been adopted. The subject of this paper is the analysis of the important changes brought about by the contemporary international legal framework in respect of the more detailed regulation of non-international armed conflicts. Furthermore, the author assesses that the more concrete limitations of the conduct of the parties to these conflicts have directed the application of the rules of international humanitarian law to the more efficient protection of victims of war. In this context, the relevant provisions of the international legal instruments applicable to non-international armed conflicts are analysed, followed by the consideration of different definitions of non-international armed conflicts and their parties contained in the Geneva Conventions and the Additional Protocol II, as well as by the analysis of the most recent decisions of international courts and tribunals, which have made a significant contribution to the interpretation and development of international law applicable in this kind of armed conflict. Special attention is given to the concept of recognition of insurgents as belligerents. In comparison to traditional international law, this concept has undergone significant transformation in the context of the obligation to apply international humanitarian law. The author concludes that the gradual cessation of the application of this institute, along with the mitigation of differences between international and non-international armed conflicts, has contributed to the awareness of all parties to armed conflicts of the obligatory nature of the relevant rules of international humanitarian law, i.e. of their responsibility for the protection of victims of war, the respect of the principle of humanity, and the demands of public conscience, from the beginning of an armed conflict to its cessation.
CHILD REPRESENTATION IN CASES BEFORE THE EUROPEAN COURT OF HUMAN RIGHTS
Authors: Čulo Margaletić Anica , Šimović Ivan
Published: December 2024

Representation of the child is an integral part of the institution of parental responsibility. Holders of parental responsibility, usually the parents, represent their child equally, jointly and consensually both in everyday life and in administrative and judicial proceedings. However, in certain life situations a conflict between parents may appear (such as separation, divorce, child abduction, partial deprivation of legal capacity etc.), so the question arises as to which one of them should represent the child? Would representation of the child by only one parent disrupt the principle of parental equality as well as the equality of sexes?

In certain life situations a conflict of interests between the parents and the child may appear (because criminal, misdemeanour or family law proceedings for the protection of the rights and welfare of the child have been initiated against one or both parents etc.), and the challenge for the legal system is how to ensure objective and impartial representation of the child and his/her best interests? These are both social and legal problems that will be elaborated through relevant academic sources and recent case law of the European Court of Human Rights.
Palliative Care Services in Bhutan: Current Progress and Future Needs
Authors: Dorji Namkha , Yangden Yangden , Bhuti Kinley , Dorjey Yeshey , Tshering Sangay , Giam Cheong Leong , Laabar Tara Devi
Published: December 2024

Palliative care (PC) is a young concept in Bhutan. Since the establishment of home-based PC services at the national referral hospital of Bhutan for the residents of Thimphu City in 2018, many patients have benefitted. The need for PC in Bhutan is huge and urgent. The provision of quality PC is important to improve the quality of life of people facing life-limiting illnesses and end-of-life care, irrespective of their diagnosis. At present, efforts are being made to expand the services to the rest of the country by developing human resources. The plan is to train the existing manpower with the help of regional and international experts so that the PC services in Bhutan are sustainable.
An evidence-based case of bilateral nephrolithiasis treated with individualised homoeopathic medicine: A case report
Authors: Debnath Nabanita , Das Kapil
Published: December 2024

Nephrolithiasis, or renal calculi, is a painful and common urinary disorder affecting millions worldwide. Conventional treatments primarily focus on pain management and calculus removal, but concerns about recurrence have led many patients to seek alternative therapies. Homoeopathy, a holistic medical system, offers an intriguing approach to managing nephrolithiasis. A 35-year-old patient presented with bilateral flank pain radiating up to the groin with an ultrasonography report of non-obstructive bilateral renal calculi. He was treated effectively with the homoeopathic medicine Thuja, which was selected according to case totality. This case shows the efficacy of homoeopathic medicines in addressing and expelling bilateral renal calculi. A large-scale randomised trial is recommended to assess the efficacy of individualised homoeopathic treatment.
Advancing care for congenital pseudoarthrosis: A case series highlighting the combined use of an intramedullary device with either Ilizarov’s fixators or plating for the treatment of congenital pseudoarthrosis
Authors: Alhuzaimi Fahad S. , Alsubaie Abdulaziz A. , Alshayhan Fahad A. , Alsehibani Yazeed A. , Alrawaf Rawaf K.
Published: December 2024

Congenital pseudarthrosis of the tibia (CPT) is a bone defect in which non-union occurs in a dysplastic segment of the tibial diaphysis following a fracture at the same site. Once a fracture occurs through a susceptible bone and pseudoarthrosis is formed, spontaneous healing is unexpected. Therefore, surgical intervention is essential for healing. This study aimed to compare the outcomes of using intramedullary nailing with either Ilizarove’s fixator or plating as a treatment method for CPT to other treatment methods described in the literature. This case series study included nine patients who presented to the Pediatric Orthopedic clinic with CPT from 2018 to 2021. All patients were previously diagnosed with Neurofibromatosis-1 by pediatric genetics and presented with unilateral CPT. The minimum follow-up duration was 12 months. Nine patients were diagnosed with neurofibromatosis. Of the nine patients, fixation was supplemented with an Ilizarov external fixator in 5 patients, and the plate was used in 4 patients. Most patients (88.9%) achieved union, except for one patient with an infection requiring multiple surgical debridement. The type of fixation was not significantly associated with the union rate. In conclusion, patients who underwent intramedullary nailing in conjugation with Ilizarov’s fixator or plating for the treatment of CPT and cross-union have achieved excellent union rates with no refracture in early outcomes.
The many faces of ophthalmopathy of prematurity
Authors:   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation, Sidorenko E.I. , Obrubov S.A. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation, Sidorenko E.E. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation,   V.F. Voino-Yasenetsky Scientific and Practical Center for Specialized Medical Care for Children, Moscow, Russian Federation, Nikolaeva G.V. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation, Astasheva I.B. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation, Aksenova I.I. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation, Le H.T. ,   N.I. Pirogov Russian National Research Medical University, Moscow, Russian Federation
Published: December 2024

Relevance. Retinopathy (ophthalmopathy) of prematurity (ROP) is a severe vasoproliferative eye disease that primarily affects profoundly premature infants. It is one of the most acute problems in pediatric ophthalmology, as this disease occupies a leading position in the structure of blindness and visual impairment in early childhood.

Purpose. To present in detail the main achievements of the scientific research of the pediatric ophthalmologist in the N.I. Pirogov Russian National Research Medical University about the dominant problem of neonatal ophthalmology – ROP.

Material and methods. The literature review of scientific publications and dissertations was conducted by the staff of the Department of Ophthalmology at the Pediatric Faculty of N.I. Pirogov Russian National Research Medical University under the guidance of the department head, corresponding member of the Russian Academy of Sciences, Professor E.I. Sidorenko. These works studied the morphological, physiological, and biochemical characteristics of the visual system in premature newborns and the pathogenesis of ROP.

Results. Analysis of the conducted research convincingly demonstrated that in children with ROP, all eye tissues are affected, not just the retina; therefore, it is more accurate to refer to this disease as «ophthalmopathy of prematurity». Researchers have proposed to identify the first preclinical angiospastic phase in the development of ophthalmopathy of prematurity. The course of the disease, treatment effectiveness, and recurrence (reactivation) rates depend on various factors that need to be considered in the treatment of ROP. It is recognized that the most significant factors are the degree of prematurity, primarily gestational age and birth weight of the premature infant. Researches that do not consider these risk factors will significantly affect research results and assessments of the effectiveness of ROP.

Conclusion. The accumulated experience requires distinguishing forms of ROP not only based on birth weight and gestational age but also based on the degree of prematurity.

Key words: premature infants, retinopathy of prematurity, risk factor analysis, gestational age, degree of prematurity, birth weight
Ultrasonographic study of the eyelids in patients with paralytic lagophthalmos: parallels between clinical signs and anatomy
Authors:   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga branch, Kaluga, Russian Federation, Gushchina M.B. ,   Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russian Federation, Nadtochii A.G. ,   Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russian Federation, Tereshchenko A.V. ,   S. Fyodorov Eye Microsurgery Federal State Institution, Kaluga branch, Kaluga, Russian Federation, Afanaseva D.S. ,   V.P. Vyhodcev Eye Hospital, Omsk, Russian Federation
Published: December 2024

Purpose. To establish parallels between clinical signs and anatomy based on the ultrasonographic examination in patients with paralytic lagophthalmos.

Material and methods. This study included 31 patients (24 females and 7 males) aged 27–79 years with monolateral paralytic lagophthalmos. In all patients, thicknesses of the upper and lower eyelid are: skin, orbicularis oculi muscle including Riolan’s muscle, upper eyelid levator with Muller’s muscle, tarsus, conjunctiva, as well as total eyelid thickness. The measured parameters on the side with lagophthalmos were compared with ones on the fellow intact side.

Results. In paralytic lagophthalmos, we found out differences in the thickness of the upper and lower eyelid structures. In the lower eyelid on the side with lagophthalmos, all measured structures were thinner. Additionally, there was no significant difference at the ratio between Riolan’s muscle and orbicularis oculi muscle thicknesses. In the upper eyelid, most of the structures were thinned, along with thickening of skin, tarsus and complex of tarsus and conjunctiva. Moreover, the ratio between thickness of levator with Muller’s muscle and orbicularis oculi muscle increased multiple times. This is due to the thinning of orbicularis oculi muscle. On the contralateral intact side, the studied structures were noticed to be thicker in the lower eyelid than in the upper one.

Conclusion. Thus, the article provides the strong anatomical ground for the typical clinical signs of lagophthalmos: upper eyelid retraction and lower eyelid ectropion.

Key words: facial nerve palsy, orbicularis oculi muscle, levator, Muller’s muscle, Riolan’s muscle, cornea, upper eyelid retraction, ectropion, eyelids ultrasound examination
Hemşirelik Öğrencilerinin El Hijyeni Bilgi ve Tutumları ile Uygulamaları arasındaki İlişki, Tanımlayıcı Araştırma
Authors: Şanlıalp Zeyrek Arife , Arslan Sümeyye , Fidan Özlem
Published: December 2024

Giriş: Hasta güvenliğinin sağlanması ve sürdürülmesinin önemli bileşenlerinden biri el hijyenidir. Amaç: Bu araştırma hemşirelik öğrencilerinin el hijyeni ile ilgili tutum ve bilgileri ile el hijyeni uygulamaları arasındaki ilişkiyi incelemeyi amaçlamaktadır. Gereç ve Yöntemler: Bu tanımlayıcı araştırmanın örneklemini, bir devlet üniversitesindeki 627 hemşirelik bölümü öğrencisi oluşturmuştur. Öğrenci Tanıtım Formu, El Hijyeni Bilgi Anketi, Sosyal El Yıkamaya Yönelik Tutum Ölçeği, El Hijyeni Uygulama Envanteri veri toplama aracı olarak kullanılmıştır. Bulgular: Araştırmada hemşirelik öğrencilerinin el hijyeni uygulama ve sosyal el yıkamaya yönelik tutumları ile sınıfları, eğitim alma durumları, bilgi seviyeleri arasında istatistiksel yönden anlamlılık belirlenmiştir (p
The Cycle of Social Sciences and Humanities in Library and Bibliographical Classification
Authors: Khodanovich Marina A.
Published: December 2024

In the middle of the 20th century in our country the national Library and Bibliographic Classification (LBC) tables for universal and specialized scientific libraries were published for the purpose of organizing book collections, catalogues, card catalogues, bibliographic descriptions in indexes. During its existence, a system of scientific and specialized versions of classification tables for libraries of different types, depending on the acquisition of their collections, has been created. At present the LBC exists in three main variants: full, medium and abridged schedules, which differ in the degree of detail and depth of disclosure of content, but are consistent with each other in structure and indexing. They also preserve the principle grouping and sequence of sciences in the main series: first comes the natural sciences cycle, then the applied and technical sciences, and finally the social and humanities cycle.

Classification as a form of knowledge organisation has the task of revealing the content of printed works in the most complete way. The cognitive nature of library classification is connected with the development of science and changes in its various fields, with the change of scientific paradigms, the formation of new research directions, approaches and methods, with interpretations of modern phenomena. The arrangement of knowledge about the surrounding world is based on the provisions, rules, principles and methodological foundations laid in the classification as tools of cognition.

The article analyses the socio-humanities complex in the LBC Middle tables, taking into account the changes in the sciences for a comprehensive disclosure of the content of the works of print.
Count N.P. Rumyantsev and the Fate of Peter the Great’s Unfinished Project
Authors: Yurkin Igor N.
Published: December 2024

The activity of Count N.P. Rumyantsev as the head (chief director) of the Department of Water Communications (1801—1809) is considered. The functions of the institution are described. The content of the “Note on Water Communications” submitted by the director in 1801 to the State Council is characterized: it contains information about the history and condition of hydraulic engineering objects, about the purpose for which the project was created and, if it was not completed, about the expected result. The most important projects (including the Mariinsky Canal) implemented by the Department during the period of N.P. Rumyantsev’s administration are listed and selectively reviewed. Based on unpublished materials from the Russian State Historical Archive, the history of the “resumption” of the Ivanovsky Canal, the construction of which, begun under Peter the Great, was stopped before completion, is summarized. The contribution of prominent hydraulic engineers engaged by N.P. Rumyantsev to implement the project is highlighted, including F.P. de Wollant, who carried out a preliminary survey of the canal route, and the project developer Ch.I. Trousson. The key rescripts of Emperor Alexander I, given by him to N.P. Rumyantsev, are quoted for the fate of the project. It is shown what role in stopping the work on the project, carried out in 1806—1809, was played by the change of the Department’s leadership (removal of its head N.P. Rumyantsev and appointment of Prince George of Holstein-Oldenburg to the post of Director) and subsequent structural changes — replacement of the Department by the Water Communications Expedition under the Chief Director of Water Communications. The information presented in the article enriches the understanding of N.P. Rumyantsev’s activities in the civil service in the first decade of the 19th century and emphasizes the importance of studying his legacy.
Kegagalan dan Perbaikan pada Worm Screw Press Pengolah Minyak Kelapa Sawit (CPO) Dengan Metode Simulasi Pemodelan Geometrik Menggunakan Autodesk Inventor 2013
Authors: Prastyo Shandi , Syawaldi  , Yulianto Dody
Published: December 2024

KEGAGALAN DAN PERBAIKAN PADA WORM SCREW PRESS PENGOLAH MINYAK KELAPA SAWIT (CPO) DENGAN METODE SIMULASI PEMODELAN GEOMETRIK MENGGUNAKAN AUTODESK INVENTOR 2013
Syawaldi, Dody Yulianto, Shandi Prastyo
Jurusan Teknik Mesin Universitas Islam Riau
syawaldi@eng.uir.ac.id
 
Abstrak
Worm screw press adalah salah satu komponen utama mesin pengekstraksi minyak mentah kelapa sawit (CPO) yang selalu mengalami keausan dan kegagalan dan patah. Masa pakai worm screw press di pabrik kelapa sawit sering tidak sesuai dengan rekomendasi waktu dari pabrik pembuatannya, keausan yang terjadi sehingga dapat menggangu kinerja mesin screw press dan menurunkan kapasitas hasil produksi CPO. Maka perlu dilakukan perbaikan pada worm screw press. Perbaikan yang dilakukan adalah dengan mengelas kembali (rebuild) permukaan yang aus tersebut dengan ketebalan lebih kurang 15 mm. Sehingga Worm screw press yang sudah diperbaiki ini dapat bertahan untuk jangka waktu lebih kurang 300-400 jam pemakaian. Analisa awal dilakukan dengan menghitung respon yang bekerja pada worm screw press akibat tekanan pada konus. Dari hasil simulasi software inventor didapat bahwa keausan terbesar terletak pada bagian ujung worm screw press yang mendapat tekanan langsung dari konus. Didapat jumlah prediksi keausan yang terjadi dalam 1 hari sebesar 66,8904 mm3/hari.
Analisa Jumlah Susunan Mata Rantai Perontok Jagung Terhadap Daya Efektif dan Laju Produksi Pemipil pada Mesin Perontok Jagung
Authors: Harnas M. Arifki , Anwar Irwan , Syawaldi
Published: December 2024

ABSTRAK
 
Perancangan ini memiliki tujuan untuk mendesign alat baru dan dapat menyelesaikan masalah-masalah yang dihadapi masyarakat / petani dalam mengolah hasil pertanian. Dengan adanya perancangan alat, diharapkan mampu menemukan inovasi-inovasi alat untuk membantu kehidupan masyarakat. Rancangan adalah tahap setelah analisis dari siklus pengembangan sistem yang dapat berupa penggambaran, perencanaan dan pembuatan sketsa dari beberapa elemen yang terpisah ke dalam satu kesatuan yang utuh dan berfungsi. Hasil rancangan dan analisa alat ini didapatkan daya penggerak 3,5 PK dengan putaran mesin 4000 rpm. Komponen utama rancangan ini adalah mata rantai terbuat dari poros panjang 120 cm sebagai mata perontok dan rantai senagai mata pisau. Hasil analisa perhitungan yang diperoleh dari susunan mata rantai yang efektif adalah 11 susunan. Diameter poros  adalah 3 cm dengan bahan poros ST.37 yang  ditambah rantai untuk mata pemipil. Hasil pengembangan alat perontok jagung ini menghasilkan peningkatan produksi setelah menggunakan 11 susun mata rantai 516kg perjam dibandingkan susunan mata rantai sebelumnya yang berjumlah 8 susunan yang hanya 412kg perjam.
Kata kunci :  Daya, Putaran, Poros.
PENINGKATAN KETANGGUHAN IMPACT PISAU MESIN PEMOTONG RUMPUT DENGAN CARA PERLAKUAN PANAS MENGGUNAKAN MEDIA PENDINGIN COOLANT RADIATOR DAN UDARA
Authors: Juliansyah Sandro , Panuh Dedikarni , Yulianto Dody , Rahman Hamimah Abd. , Baharuddin Nurul Akidah
Published: December 2024

Penelitian ini bertujuan untuk mendapatkan pengaruh perlakuan panas tempering yang diberikan terhadap ketahanan impak dan untuk mendapatkan pengaruh perlakuan panas tempering terhadap struktur mikro. Penelitian ini dilaksanakan dengan cara memanaskan hingga temperatur austenit 8000C dengan waktu penahanan selama 45 menit dan diquenching dengan media pendingin coolant radiator. Kemudian dilakukan tempering dengan variasi temperatur 3000C, 4000C, 5000C dengan waktu penahanan 2 jam, dilakukan pengujian kekerasan, pengamatan struktur mikro, pengujian impak (ketangguhan). Hasil dari pengujian menunjukan struktur mikro pisau pemotong rumput tanpa perlakuan panas adalah Pearlite dan pada pisau pemotong rumput yang diberi perlakuan panas tempering 3000C , 4000C , 5000C selama 2 jam adalah Pearlite (dask area). Nilai kekerasan dan ketahanan impak pada pisau pemotong rumput tanpa perlakuan panas yaitu 40,3 HRC dan 1,6192 J/mm2. Nilai kekerasan tertinggi dan harga impak terendah ada pada sampel tempering 3000C yaitu 55,3 HRC dan 0,1064 J/mm2. Pada sampel tempering 4000C nilai kekerasan yang didapat dan harga impak yaitu 46,7 HRC dan 0,2132 J/mm2. Kemudian nilai kekerasan terendah ada pada sampel 5000C dibanding dari pisau pemotong rumput tanpa perlakuan panas dan tempering 3000C dan 4000C yaitu 35,5 HRC, tetapi ketahanan impak masih rendah dibanding pisau pemotong rumput tanpa perlakuan panas yaitu 0,7592 J/mm2. Dari ketiga variasi temperatur tempering diatas menunjukan bahwa temperatur tempering 5000C bisa menurunkan nilai kekerasan pisau pemotong rumput tanpa perlakuan panas.
Perancangan Mesin Pencacah Pelepah Sawit Portable Untuk Bahan Baku Pakan Ternak
Authors: Setiawan Imam Setiawan , Syawaldi  , Yulianto Dody
Published: December 2024

Abstrak
 
Pelepah kelapa sawit merupakan salah satu limbah hasil pertanian yang sangat potensial dimanfaatkan untuk dijadikan pakan ternak. Pencacahan pelepah sawit yang dilakukan peternak masih bersifat tradisional, yaitu memotong secara manual dengan menggunakan pisau golok. Bagi peternak kecil cara ini masih memadai. Namun bagi peternak sedang dan besar cara ini kurang efektif karena memakan waktu dan tenaga lebih banyak. Melihat permasalahan ini penulis merancang mesin pencacah pelepah sawit portable yang digunakan untuk mencacah limbah pelepah sawit untuk dijadikan pakan ternak. Kemudian merencanakan dan menghitung gaya pada komponen elemen mesin, besarnya daya motor yang digunakan, dan besarnya kapasitas yang dihasilkan oleh mesin pencacah pelepah sawit portable. Setelah pembuatan mesin, selanjutnya melakukan pengujian mengenai kapasitas produksi sesungguhnya yang dapat dihasilkan oleh mesin pencacah pelepah sawit portable. Hasil perancangan menghasilkan mesin pencacah pelepah sawit portable dengan spesifikasi ukuran panjang 88 cm, lebar 67 cm dan tinggi 73 cm. kapasitas produksi mesin pencacah pelepah sawit portable 114 kg/jam. Sumber penggerak mesin adalah motor bakar bensin dengan daya 6,5 HP serta putaran 3600 rpm. Sistem transmisi menggunakan V-belt tipe A-66 dengan poros berdiameter 2,54 cm, dan bantalan radial ball type P205.
Kata kunci: Daya, poros, Sabuk-V, Bantalan.
DAMAGE ANALYSIS OF SUCKER ROD STRING DUE TO EXCEEDS STRESS ON ARTIFICIAL LIFT SUCKER ROD PUMP WELL IR-01 TALANG AKAR PENDOPO FIELD
Authors: Melysa Richa , Musnal Ali
Published: December 2024

ABSTRAK
Sumur IR-01 menggunakan sucker rod pump sebagai metode pengangkatan buatan dalam memproduksikan minyak. Data riwayat sumur pada tahun 2017 menunjukkan bahwa sering sekali mengalami permasalahan sucker rod putus, sehingga perlu dilakukan upaya pemecahan masalah. Analisis yang digunakan untuk mengetahui penyebab kerusakan rangkaian sucker rod pada sumur IR-01 adalah dengan melakukan perhitungan beban pada polished rod dan kinerja SRP secara teori, serta menggunakan interpretasi data hasil dynamometer test guna mendapatkan data aktual beban polished rod khususnya tingkat stress sucker rod di lapangan. Setelah dianalisis penyebab permasalahan maka dapat dilakukan upaya penanganan masalah dengan memberikan rekomendasi perencanaan ulang untuk mengatasi permasalahan sucker rod pada sumur IR-01.