bluuebunny/crossref_metadata_2025 huggingface dataset:
Topological optimization hybrid algorithm for the adhesive joint
Authors: Polyakov Olexandr , Vambol Oleksii , Gagauz Fedir , Barakhova Hanna , Vernadska Kristina , Cheranovskiy Valeriy
Published: January 2024

The subject of this study is a topological optimization algorithm for a lapped symmetric adhesive joint. The purpose of this research is to create a hybrid optimization algorithm that combines the advantages of a genetic algorithm and a particle swarm algorithm and, at the same time, reduces the time required to solve the problem. Task: to create a methodology for solving the optimization problem for a symmetric double-sided lapped adhesive joint, which consists of a main plate and two patches (the main plate has a constant thickness, and the thickness of the patches varies along the length of the joint, this is required to reduce the stress concentration in the joint and reduce its weight) with satisfaction of the optimality criterion, namely, to minimize the mass of the structure with the strength and thickness restrictions for the patch. The optimization problem is that we must find the optimal patch form, namely, the length of the patch and the thickness-on-length dependence for the patch. Methods: the modified Goland-Reissner model was used to describe the deflected mode of the joint. The finite difference method was used to solve the direct stress state problem for the structure. For the numerical solution of the optimization problem, a combination of the multi-population model of the genetic optimization algorithm and the particle swarm algorithm was used. To improve the performance of the genetic algorithm, a multi-population model with migration of the best individuals between populations was applied. The introduction of individuals from other populations into the population avoids homogenization of the genotype in a separate population and premature stopping of the optimization process. To describe the shape of the patch, the Fourier series expansion of the patch thickness dependence was used. Results: A hybrid algorithm is proposed based on the sequential application of a genetic algorithm and a particle swarm algorithm for three populations of solutions. The particle swarm algorithm makes it possible to improve the value of the objective function achieved at the previous stage by 20%. Conclusions: the scientific novelty lies in the improvement of the optimization algorithm compared with the known ones. To reduce the calculation time, a one-dimensional adhesive joint stress state mathematical model was used in this paper. The methods used made it possible to create a combined topological optimization algorithm that combines the advantages of both methods and allows us to find a solution to the problem quite quickly. The Python program run time is only a few minutes.
Simulation of arms distribution strategies by combat zones to create military parity of forces
Authors: Fedorovich Oleg , Lukhanin Mikhail , Prokhorov Oleksandr , Slomchynskyi Oleg , Hubka Oleksii , Leshchenko Yuliia
Published: January 2024

The problem of researching weapons distribution strategies to ensure effective combat operations in a military conflict zone is being formed and solved. The relevance of the study is related to the solution of the task of an operational-tactical nature in order to establish the military parity of forces in the conditions of the introduction of various equipment into the combat zone (CZ), which has different characteristics of combat capability from the set of warehouses and suppliers, with long supply chains. The problems that arise when establishing military parity of forces with the help of various weapons with different indicators of combat capability, the limited capabilities of suppliers, and the complications of supply logistics are analyzed. It is shown that asymmetric solutions, according to military equipment, are possible because of the use of technological innovations and high indicators of the combat effectiveness of weapons. It was concluded that the establishment of military parity of forces is possible thanks to the use of rational strategies for the distribution of weapons, which is an urgent problem in the conditions of modern hybrid warfare. Thus, this paper proposes a study of possible strategies for the distribution of weapons by CZ in conditions of threats of martial law of the country. The current study creates models that allow for the evaluation of possible arms distribution strategies, considering the diversity of military equipment, limited capabilities of suppliers, and risks associated with long logistics supply chains. Using set-theoretical analysis, methods of combinatorics, and enumeration theory, a systematic presentation of the distribution process of weapons is created. Possible strategies for the distribution of weapons by CZ to establish military parity of forces are formed and analyzed. Optimization models have been created for the rational distribution of military equipment under conditions of limited capabilities of manufacturers in terms of costs, production terms, and risks of arms supply. A simulation model is being developed to study the dynamics of the logistical process of distribution and supply of weapons in agent representation using the AnyLogic platform. Modeling allows you to analyze the impact of threats to the main indicators of the distribution and supply of weapons. An illustrative example of the distribution of weapons by CZ of a military conflict is presented. The scientific novelty of this research is related to the solution of the actual problem of the rational distribution of various military equipment by CZ in the conditions of modern hybrid warfare. The results of this study should be used for operational-tactical planning of the logistical process of distribution and supply of weapons to solve the problem of establishing military parity of forces in the CZ.
ТЕОРЕТИКО-МЕТОДОЛОГІЧНІ ЗАСАДИ УПРАВЛІННЯ РОЗВИТКОМ ЛЮДСЬКОГО КАПІТАЛУ
Authors: Точиліна Юлія
Published: January 2024

У статті обґрунтовано, що розвиток людського капіталу є запорукою інноваційного зростання національної економіки. Одним із пріоритетних шляхів досягнення його ефективного нагромадження та використання є запровадження раціонального механізму управління розвитком людського капіталу. Запропоновано систему управління розвитком людського капіталу, що передбачає налагодження ефективної взаємодії між суб’єктом та об’єктом на основі визначених методів, в результаті чого відбувається формування сучасних інноваційних характеристик людського капіталу, що здатен забезпечувати сталий інноваційний розвиток. В такій системі об’єктом виступає сам людський капітал, а суб’єктом – окремі індивіди, організації, інститути чи держава в цілому, що здійснюють керуючу дію на об’єкт управління. Ключовими методами, які доцільно використовувати з метою впливу суб’єкта управління на об’єкт виділено індивідуальну мотивацію людини та державне регулювання.
ВПЛИВ ДІДЖИТАЛІЗАЦІЇ НА СВІТОВИЙ ФОНДОВИЙ РИНОК
Authors: Хома Ірина , Мисько Юліана
Published: January 2024

Стаття присвячена актуальним питанням визначення впливу діджиталізації на світовий фондовий ринок. В даній роботі наведено основні фактори впливу діджиталізації на світовий фондовий ринок. Проаналізовано капіталізацію міжнародних фондових ринків, а також Топ-10 фондових бірж світу з найбільшою капіталізацією протягом п’яти останніх років. Виділено основні риси віртуалізації як елемента діджиталізації світового фондового ринку. Представлено етапи консолідації світових фондових бірж. Зазначено низку поточних драйверів діджиталізації фондових ринків. Визначено окремі тренди діджиталізації світового фондового ринку. Охарактеризовано ключові напрями впровадження діджитал-технологій на світовому фондовому ринку. Окреслено основні аспекти функціонування «фондових бірж майбутнього». А також розглянуто топ-3 компанії у 2022 році, які активно торгують на фондовому ринку за допомогою штучного інтелекту.
ФАКТОРНИЙ АНАЛІЗ ВПЛИВУ ЛОГІСТИЧНИХ ПОКАЗНИКІВ НА РЕНТАБЕЛЬНІСТЬ АКТИВІВ ПІДПРИЄМСТВА РОЗДРІБНОЇ ТОРГІВЛІ
Authors: Ільченко Наталія , Восканян Заруі
Published: January 2024

Наукова стаття приділяє увагу вивченню взаємозв'язку логістичних показників та рентабельності активів у сфері роздрібної торгівлі за допомогою факторного аналізу, проведеного на основі фінансових даних ТОВ «РУШ». Дослідження фокусується на ключових аспектах управління запасами та їх впливі на фінансові результати підприємства, зокрема на прикладі конкретної компанії «РУШ». Аналізується взаємозв'язок між рівнем запасів, виробничих запасів, запасів товарів та рентабельністю активів для ідентифікації ключових факторів, що визначають ефективність управління ланцюгом постачання та фінансовий успіх ТОВ «РУШ». Факторний аналіз дозволяє розкрити важливі залежності та взаємозв'язки між різними показниками, що вказує на те, як впровадження оптимальних стратегій логістики та управління запасами може позитивно позначитися на рентабельності підприємства. Отримані результати дослідження мають практичне значення для підприємств роздрібної торгівлі, зокрема для ТОВ «РУШ». Вони можуть служити основою для вдосконалення стратегій управління запасами та логістичного управління з метою підвищення конкурентоспроможності та стабільності на ринку.
Prophetic Communication: Implementation of Da'i Da'wah Strategies in The Millennial Era
Authors: Irawan Gusli Bambang , Radiamoda Anwar
Published: January 2024

As technology advances, the da'wah model used by preachers is becoming more dynamic. The increasingly rapid development of the times requires da’i to change their preaching strategies to make them more relevant to the millennial generation who are familiar with advances in information technology. The new media phenomenon can be applied to spread Islam in the millennial era. One of the da'wah strategies that is relevant in this millennial era is the concept of prophetic communication. This research aims to find out how prophetic communication is used as a concept and strategy for da'wah and how prophetic communication is applied to preachers in the millennial era. This research uses bibliographic methods in several journals and books related to this discussion. The conclusion of this research is that prophetic da'wah in the millennial era emphasizes humanization, social justice and dimensions of spirituality. Adapting messages to the social context and use of mass media is important. Information technology is used to reach a wider audience while enriching religious knowledge with other knowledge. Data supports social change, while social media is used as an effective means of preaching. Da'i need to continue learning, following developments with the times, while maintaining Islamic values ​​in prophetic communication. Adapting da'wah to changing times and technology is very important.

Seiring kemajuan teknologi, model dakwah yang digunakan para da'i semakin dinamis. Pesatnya perkembangan zaman menuntut para da’i mengubah strategi dakwahnya agar lebih relevan dengan generasi milenial yang akrab dengan kemajuan teknologi informasi. Fenomena media baru dapat diterapkan untuk menyebarkan Islam di era milenial. Salah satu strategi dakwah yang relevan di era milenial ini adalah konsep komunikasi profetik. Penelitian ini bertujuan untuk mengetahui bagaimana pemanfaatan komunikasi profetik sebagai konsep dan strategi dakwah serta bagaimana penerapan komunikasi profetik pada para da’i di era milenial. Penelitian ini menggunakan metode kepustakaan pada beberapa jurnal dan buku yang berkaitan dengan pembahasan ini. Kesimpulan dari penelitian ini adalah Dakwah profetik di era milenial menekankan humanisasi, keadilan sosial, dan dimensi spiritualitas. Adaptasi pesan dengan konteks sosial dan penggunaan media massa menjadi penting. Teknologi informasi digunakan untuk menjangkau khalayak lebih luas sambil memperkaya ilmu agama dengan ilmu lain. Data mendukung perubahan sosial, sementara media sosial dijadikan sarana dakwah yang efektif. Para da'i perlu terus belajar, mengikuti perkembangan zaman, sambil menjaga nilai-nilai Islam dalam komunikasi profetik. Adaptasi dakwah dengan perubahan zaman dan teknologi sangat penting.
Analysis of the Concept of Al-Hubb in the Thought of Zainal Arifin Abbas (1911-1977)
Authors: Habibi M. Yusuf , Andy Safria , Rambe Uqbatul Khoir
Published: January 2024

This article seeks to explore Zainal Arifin Abbas' conceptualization of al-Hubb (Love). It poses two central questions: firstly, what is Zainal Arifin Abbas' interpretation of the concept of al-Hubb, and secondly, how does he construct the foundational framework for interpreting al-Hubb? This qualitative research relies on both primary and secondary data sources. The primary data comprises Zainal Arifin Abbas' writings in Tafsir Al-Qur'an al-Karim and Ilmu Tasawuf. Concurrently, secondary data, including articles, dissertations, and supporting information, is incorporated. The data is subjected to content analysis. The findings reveal that al-Hubb serves as a fundamental determinant of behavior, guiding individuals towards peace, security, and a devout faith in brotherhood. Zainal Arifin Abbas imparts a message of love in his works, emphasizing that love originates from knowledge, familiarity, and the reception of goodness.

Artikel ini bertujuan untuk melacak konsepsi pemikiran Zainal Arifin Abbas mengenai Al-Hubb (Cinta). Dalam artikel ini mengajukan pertanyaan, pertama bagaimana konsep penafsiran al-Hubb  menurut Zainal Arifin Abbas?, kedua, bagaimana konstruksi dasar penafsiran al-Hub menurut Zainal Arifin Abbas?. Penelitian ini berjenis penelitian kualitatif dengan menggunakan dua sumber data yaitu primer dan sekunder. Data primer yang digunakan dalam artikel ini adalah tulisan Zainal Arifin Abbas dalam Tafsir Al-Qur’an al-Karim dan Ilmu Tasawuf. Sedangkan untuk data sekunder yang digunakan adalah artikel, disertasi, atau data-data yang mendukung dalam penelitian ini. Dari data yang ada akan dianalisis dengan menggunakan content analysis. Dari penelitian ini menunjukkan beberapa al-Hubb  (Cinta) sebagai landasan bersikap, yang bisa membawakan manusia kepada kedamaian, keamanan, serta keimanan dan persaudaraan yang suci. Zainal Arifin Abbas juga menawarkan pesan cinta (al-Hubb ) dalam beberapa karyanya. Pesan cinta itu memuat asal lahirnya cinta dari pengetahuan dan perkenalan. Dan cinta itu lahir dari kebaikan yang diterima.
Quantifying heritability of the environment using animal models: a case study
Authors: Munar-Delgado Gabriel , Nicolaus Marion , Both Christiaan , Edelaar Pim
Published: January 2024

Evolutionary ecology has traditionally studied how natural selection shapes the phenotypes of individuals in response to their environment, which increases population fitness. It is also well known how habitat choice can affect individual local adaptation. However, recent work has highlighted the incompleteness of the link between habitat choice and its evolutionary consequences. By treating the selected habitat as an extended phenotype, the evolutionary focus can be shifted to how the extended phenotype evolves to match the organisms' phenotypic traits. Theoretical approximations suggest that animal models could be used to estimate the heritability of the extended phenotype, providing insights into its evolutionary dynamics. Here we use data from a long-term study of a pied flycatcher population (Ficedula hypoleuca) to test the use of animal models for the estimation of the heritability of an extended phenotype i: the vegetation around the nest box. We also applied animal models to different subsets of the population (based on philopatric status) to test which mechanism might be causing the inheritance of the extended phenotype, if any. We also ran simulations to randomize the nest box and its surrounding vegetation for the different population subsets, thereby eliminating the effect of habitat choice, and used the animal models to identify the sources of variation of the extended phenotype. We confirmed that animal models can be used to estimate the local habitat heritability in natural populations and found a significant habitat heritability for our pied flycatcher population. Moreover, subset analysis and subset randomization bothindicated that the observed heritability was caused by philopatry. Thus, we propose that animal models can be used to estimate the heritability of the extended phenotype and also to disentangle the mechanism(s) causing its inheritance. By acknowledging that organisms can influence the habitat they experience to increase their adaptation and by focusing on the evolution of extended phenotype, we should be able to better understand how population adaptation increases and how it evolves.
National Exposure Classes of Concrete in Hungary
Authors: Kausay Tibor
Published: January 2024

Sufficient durability of concrete and reinforced concrete structures is always required, mainly if it is exposed to extraordinary (severe) environmental attack - much over the well-known classes in European Standard for Concrete EN 206. In this case, appropriate concrete composition (e.g. special binders, etc.), strength, low porosity and sufficient concrete cover are required to withstand these special environmental exposures. The present paper deals with the additional exposure classes for these severe cases added to the Hungarian Standard MSZ 4798, which is the national version of EN 206. Maybe CEN could also use and add some of these “X-new” classes in the following version of the standard EN 206.
The Aesthetics of Concrete
Authors: Paládi-Kovács Ádám
Published: January 2024

We cover the external facades of our buildings with different materials, which significantly determine the appearance, and aesthetics of the building while meeting many requirements. The article covers the number of ways and how facades created with concrete elements, concrete cladding or exposed concrete can be shaped, and how they react to external influences and conditions. The article examines how today’s modern concrete facades, in addition to providing the necessary technical function, can give an aesthetic façade appearance or even how the façade can even represent the spirit of the building. In addition to the already established concrete façade technologies, what new procedures are there in the construction industry and what additional possibilities are there in this material during façade use.
Comparing the European Standards and the American Standards for Testing Concrete Mechanical Properties
Authors: Seyam Ahmed M. , Nemes Rita
Published: January 2024

Europe and the United States have a worldwide significance in the field of concrete control and construction, as well as the cleared and specified standards, according to many countries adopted their standards and regulations in the field of concrete quality control and assurance as proof of the Europe and US strong standards and due to lack of their regulations. This research compares the European standards, the American Society for Testing and Materials (ASTM) and American Concrete Institute (ACI) standards for testing the mechanical properties of concrete. The research focuses on compressive strength, flexural tensile strength, shear strength, and modulus of elasticity as key properties for assessing the quality and performance of concrete. The study found variations in the specimen size, preparation, and curing requirements, as well as testing procedures and acceptance criteria among the European, ASTM and ACI standards. The research also compared the specimen preparation and curing standards among the different standards. The research highlights the importance of following the appropriate standards and testing procedures to ensure the test results’ reliability and accuracy. Proper specimen preparation and curing are also critical to obtain accurate and representative test results. The research concludes that by following the relevant standards and procedures, it is possible to obtain consistent and reliable results that can be used to assess the quality and performance of concrete in various construction applications. This research provides a useful guide for engineers, contractors and researchers involved in the construction industry to understand and apply the standards for testing the mechanical properties of concrete.
Impact and Blast Resistance of Slurry Infiltrated Fiber Concrete (SIFCON): A Comprehensive Review
Authors: Tauma Wisam K. , Balázs György L.
Published: January 2024

The construction field developed Slurry Infiltrated Fiber Concrete (SIFCON) to improve mechanical properties considerably. The durability and ductility of this unique kind of concrete have significantly improved as well, and it has a higher energy absorption capacity. SIFCON differs from other fiber-reinforced concretes because it is produced in a different process, and finally, it contains a significant quantity of fiber, up to 20% or even more. In recent years, several research studies have been conducted on SIFCON, mainly focusing on the performance under impact and blast loading. Although this type of concrete is currently being utilized for significant structures, such as energy plants and military buildings, little is known about how it will respond to blast loads. The aim of this study is to analyze the research findings on enhancing the characteristics and toughness of SIFCON during impact and explosion situations. The review provides essential details about SIFCON that specialists in this field would need to know.
Multiaxial Strength and Deformations of Concrete, Failure Modes and a New Failure Criterion
Authors: Windisch Andor
Published: January 2024

The multiaxial strength of concrete, the associated stress-strain relationships, the failure modes and the failure criteria are again and again in the interest of researchers. After a historical review the most important bi- and triaxial experiments loading through brushes are analyzed. Based on the principal strengths and the loading path-concept a new, transparent type of presentation of the ultimate strength surface (USS) is introduced. For concrete classes ≤ C100 simplified relative strength-increase values are proposed. The difficulties of deformation measurements are reviewed. The outlines of future bi- and triaxial tests are discussed. Two failure modes are appointed. Stress failure criterion of biaxial state of stress are presented. Instead of the Modified Mohr-Coulomb failure criterion Extended Rankine-type failure criteria are proposed. Further systematic tests are necessary to detect the rate of participation of the loading equipment.
Relación entre la inteligencia espiritual y la flexibilidad psicológica en el marco de la terapia de aceptación y compromiso
Authors: San Sebastián Samperio Gonzalo
Published: January 2024

Diferentes investigaciones ponen de manifiesto la influencia de la espiritualidad en la salud y el bienestar de las personas a través del concepto de inteligencia espiritual. Del mismo modo, desde la terapia de aceptación y compromiso se trabaja en el desarrollo de la denomina flexibilidad psicológica del individuo, relacionada en numerosas investigaciones con abundantes beneficios para la salud. Sin embargo, no se encuentran estudios que evalúen la posible relación entre ambos constructos. Por ello, en esta investigación se trabaja con el objetivo de analizar la relación entre la inteligencia espiritual y la flexibilidad psicológica, considerando la hipótesis de que existe una relación directa significativa entre ambas variables. Se sigue una metodología cuantitativa, con diseño no experimental, transversal y de tipo correlacional. Se obtiene una muestra de 166 sujetos no clínicos. Los instrumentos utilizados son el SISRI-24 para evaluar la inteligencia espiritual y el AAQ-II para la flexibilidad psicológica. Los resultados no muestran relación estadísticamente significativa entre las variables (coeficiente de correlación de Spearman de 0,011 con p = 0,889), lo que sugiere que la inteligencia espiritual y la flexibilidad cognitiva son constructos independientes que influyen por separado sobre la salud y bienestar de las personas. No obstante, se discuten los resultados proponiendo futuras líneas de investigación en base a las limitaciones encontradas.
Modelo de atención en salud mental comunitaria desde el primer nivel de atención sanitario: Caso UDA Canelones al Este, Barros Blancos, Uruguay
Authors: Cabrera Fabián
Published: January 2024

El presente trabajo se enmarca en la tesis para el título de Máster en Psicología Clínica y de la Salud. El objetivo fue diseñar un modelo de atención comunitario en salud mental en la Unidad Docente Asistencial Canelones al Este del Primer Nivel de Atención, Barros Blancos, Uruguay entre 2018-2020. Adoptamos una concepción de investigación cualitativa de estudio de caso tomando a la Unidad Docente Asistencial Canelones al Este en su sede de la policlínica Salvador Allende como, el caso. Se ha utilizado la entrevista y búsqueda documental como técnicas de recolección de datos. Los resultados reconocen competencias formativas teórico/técnicas, criterios de intervención, dificultades, posicionamiento epistémico y, significaciones y sentidos de las experiencias de los/as profesionales intervinientes en el estudio. Se identificó una práctica integral, producción formativa para el cambio de paradigma de atención en salud mental, desde la medicina familiar y comunitaria, la psicología de la salud, la  promoción de la salud mental, los derechos humanos y la comunidad. El modelo propuesto aplica como insumo para otras Unidades Docentes Asistenciales del Primer Nivel de Atención, así como para la implementación del Plan Nacional de Salud Mental de Uruguay en el marco de la Ley de Salud Mental.

Palabras claves: salud mental, primer nivel de atención, psicología de la salud, modelo, intervención
ANALYSIS OF SPATIAL RELATIONSHIP BETWEEN GROUNDWATER POTENTIAL ZONES AND BOREHOLE YIELDS IN OKENE LOCAL GOVERNMENT AREA, KOGI STATE, NIGERIA
Authors: Adaviruku P. E. , Akpu B. , Zubairu S. M. , Oyatayo K. T.
Published: January 2024

The quantity of water that can be extracted from a borehole is directly related to the groundwater potential of an area among other things. Boreholes drilled in areas of low groundwater potential have every tendency to fail. There have been reported cases of borehole failures in Okene Local Government Area of Kogi state. This study therefore aimed at analyzing the potentiality of groundwater and the spatial relationship between borehole yield and groundwater potential zones in the area. Various data which include Sentinel 2 satellite image, Digital Elevation Model, geological map, rainfall data and borehole yield data were analyzed to produce various zones of groundwater potential, and validated using existing borehole yields and the relationship was tested using Pearson correlation. The result of this study reveals that the low potential zone covers 33.2%; moderate potential zone occupies 44.9% which cuts across the whole of Okene LGA and the high potential zone covers 21.9% mainly found around the western part of the area. The Pearson moment correlation analysis result revealed a strong positive correlation (R) value of 0.919. The correlation value shows that there is a strong positive relationship between the existing borehole yields in the study area and the groundwater potentiality map produced from the analysis. The study concluded that there is a strong positive relationship between the existing borehole yields and the groundwater potential zones in Okene Local Government Area.
Probabilistic Seismic Performance Assessment of Tall RC Special Moment-resisting Frame Buildings Equipped with Buckling-restrained Braces under Near-field Excitations
Authors: Zarif Moghadam Basefat Ali , Pahlavan Hossein , Shafaie Jalil
Published: January 2024

Many tall buildings have already been constructed near faults throughout the world, several of which have sustained casualties and economic losses during strong ground motions. This study investigates the effect of near-fault excitations on the vulnerability of tall, reinforced concrete (RC) special moment-resisting frame (SMRF) buildings equipped with buckling-restrained braces (BRBs) using seismic fragility curves. After attaining the structure’s response modification factor (R), three-dimensional (3D) models of 15-, 25- and 35-story frames were developed by the OpenSees software according to the Iranian code provisions. Thus, the seismic response of the elements was obtained. Subsequently, incremental dynamic analysis (IDA) was conducted by selecting a suitable number of compatible accelerograms in two near-field and far-field groups. Considering the maximum story drift as the demand parameter and selecting the interstory drift ratios (IDR) for the slight, moderate, extensive, and complete collapse seismic performance levels proposed by Hazus, IDA curves were plotted. Then, the seismic fragility curves were produced using the structural reliability relations. The median fragility at complete collapse damage level reduced from 0.73g, 0.62g, and 0.61g to 0.68g, 0.59, and 0.57g for the 15-, 25, and 35-story near-field and far-field earthquake models, respectively. This was attributed to increasing vulnerability and seismic fragility of the structures as a result of both height increase and distance reduction from fault. Based on the results, the most vulnerable structure, i.e., the 35-story near-fault model, experienced a 40, 17, 18, and 6% increase in median fragility at slight, moderate, extensive, and complete collapse damage levels, respectively.
Forest Dynamics and the Analysis of a Reaction-Diffusion Forest Model
Authors: Tasnim Farah , Alam Md Shah , Kamrujjaman Md
Published: January 2024

In this research, we study the dynamics of ecological models governed by differential equations. Ecology provides insight into the interaction between forest organisms, and interrelated processes regarding flora, fauna, and numerous other species. In particular, the results support population thresholds necessary for survival in some instances. Subsequently, we explore the response of mangroves of different regions to natural calamities and man-made disasters. A reaction-diffusion model has been developed to see the dynamics of the tidal woods and wetlands. Sundarbans, the largest mangrove of Bangladesh, are victim to a vast amount of hazardous events. This mathematical study of mangroves is unprecedented in such a manner. Furthermore, we continue the study of a forest ecosystem governed by an age-structured parabolic-ordinary system. We study some properties of an abstract parabolic equation, the dynamical system, and the limit sets. The model demonstrates a Lyapunov function which denotes some vital properties of the limit sets.
GANIT J. Bangladesh Math. Soc. 43.1 (2023) 26- 36
Persepsi Dan Hambatan Tenaga Medis Dalam Penerapan Clinical Pathway: Literatur Review
Authors: Muhammad Hana Yulianti , Saleh Ariyanti , Rachmawaty Rini
Published: January 2024

Clinical pathways involve the health team and part of the patient's records. Hence, team dynamics become a principal factor that needs to be appraised during implementation. Clinical pathways were considered as an additional workload for medical personnel. This research aims to review articles that discuss the perceptions and barriers among medical personnel in implementing clinical pathways. The articles were searched through the PubMed, Willey, ProQuest, and Google Scholar databases, which were published no less than ten years period from 2010 to 2020. The keywords used perception OR response AND barriers OR obstacles AND clinical pathway OR care. The pathway corresponds to the title and purpose of the review and is in full-text form. In total, eight articles meet the review criteria and objectives. The results showed that clinical pathways are perceived as a process that is directed at realizing benefits, creating habits, and requiring enthusiasm, support, and time. Obstacles for medical personnel that often arise in implementing clinical pathways include not having enough time, lack of direction and guidance, lack of staff awareness, lack of compliance in documentation, and lack of staff commitment. Conducting a direct study on evaluating the implementation of clinical pathways in hospitals is recommended.
Perbedaan Jenis Tugas Keluarga Sebagai Penentu Terhadap Fungsi Penglihatan Childhood Di Era Covid-19
Authors: Wahyuningrum Ari Damayanti , Satiti Ika Arum Dewi
Published: January 2024

In January-February 2022, there was a surge in Covid-19 cases due to the omicron virus mutation. Consequently, the government advised conducting remote learning for all students using internet-connected devices. Changes in vision function during childhood occurred globally in 2050 children, with 10% of Indonesia's 66 million children experiencing visual impairments. Maintaining eye health in this age group is facilitated through school health units, and the results are reported to parents during each semester's report card distribution. This study aimed to measure the differences in family developmental tasks concerning childhood vision function. The research design employed was a cross-sectional study using descriptive analysis involving 111 respondents: parents and elementary school students selected through accidental sampling. Data collection took place in October 2022. The measurement tool, developed from Dunst (1984), assessed family developmental tasks, converted into the Brinkman index. Student vision was measured using a Snellen card, and the level of difference was assessed using the Kruskal-Wallis test. The Brinkman index results showed that 38.14% had good vision function, 45.35% were adequate, and 16.51% were poor. The hypothesis test yielded a p-value of 0.316 0.05, indicating no significant difference between family developmental tasks and childhood vision function.Top of Form
Hubungan Lama Pemakaian Smartphone Dengan Tingkat Kualitas Tidur Pada Remaja Di Kabupaten Brebes
Authors: Rakhman Arif , Prastiani Dwi Budi , Permatasari Eka Diana , Amalianti Via
Published: January 2024

Adolescents had a problem in lack of fulfillment of sleep needs. This problem has increased along with changes in patterns and lifestyles. One of the lifestyles that are currently popular among adolescents is smartphone addiction. Prolonged use of smartphones before night bedtime will affect adolescent sleep patterns. The research aim is to determine the relationship between smartphone use and sleep quality in adolescents at MAN 1 Brebes. The research is a quantitative study with a cross-sectional approach to correlational research design. The research instrument used the “Kuesioner Penggunaan Smartphone” and Pittsburgh Sleep Quality Index Questionnaire. The study sample is 297 students recruited using stratified random sampling techniques. The inclusion criteria in the research were active students, willing to be respondents, and using smartphones. The data was analyzed using the Kendall-Tau correlation. The study result showed the majority of adolescents had a high frequency of smartphone use, and the quality of sleep was in the poor category. There was a relationship between smartphone use and the sleep quality of adolescents in Brebes with a value of Sig. (2-tailed) -0.08 (sig. 2-tailed) 0.005) and Correlation Coefficient 0.184 (very weak). Adolescents show poor sleep quality conditions with a high category in smartphone use.
Pemetaan Kejadian Stunting pada Balita di Kabupaten Klaten Tahun 2021
Authors: Astuti Fera , Ningrum Dina Nur Anggraini
Published: January 2024

The Klaten Regency stands as one of the districts yet to adopt a mapping system for managing stunting cases. The objective of this study was to identify the prevalence and risk factors associated with stunting among toddlers across the 26 sub-districts of Klaten Regency in 2021. Employing a cross-sectional design coupled with an ecological study and mapping approach, the research was conducted throughout 2021. The study encompassed a population of 26 sub-districts, accounting for a total of 6,949 reported cases of stunting in 2021. Total sampling was employed as the sampling technique. The findings revealed that in the mapping of correlated risk factors—specifically, variables such as low birth weight, chronic energy deficiency in pregnant women, birth length, and antenatal care coverage—four sub-districts were identified as having a high risk of stunting. For prospective researchers, it is recommended to explore additional risk factors associated with stunting, such as the prevalence of early marriages, the percentage of individuals living below the poverty line, the proportion of women attaining secondary education or higher, or by incorporating supplementary primary data sources, like the employment status of toddlers' parents.
Literature Review : Perbandingan Nilai PetCO2 dan PaCO2 Pada Pasien Kritis Terpasang Ventilasi Mekanik
Authors: Gunarti Tri , Sukartini Tintin , Mirzanah Syafaatun
Published: January 2024

Monitoring carbon dioxide in patients on mechanical ventilation is crucial for critical care nurses. Monitoring the value of arterial carbon dioxide pressure involves invasive arterial blood gas analysis. Monitoring end-tidal carbon dioxide pressure using capnography is a non-invasive method. This study aims to compare end-tidal carbon dioxide values with arterial carbon dioxide pressure in mechanically ventilated patients. The research design is a literature review. Searches were conducted through Scopus, ScienceDirect, ProQuest, and PubMed from 2018 to 2023. The Preferred Reporting Items for Systematic Review and Meta-Analyses flowchart method was used to select articles. The Critical Appraisal Skills Programme was used to assess article quality. Out of 79 articles, nine articles met the criteria. The procedures for collecting end-tidal carbon dioxide pressure and arterial carbon dioxide pressure data varied in terms of instrument types used and the subjects studied. There was no significant difference in carbon dioxide values between the end-tidal carbon dioxide and arterial carbon dioxide pressure methods. The agreement in comparing carbon dioxide values was acceptable. Measuring end-tidal carbon dioxide pressure has the potential to monitor mechanically ventilated patients, reducing the need for invasive monitoring, high costs, and repetitive arterial blood gas analysis.
Teknik Massage Counterpressure Berpengaruh Terhadap Penurunan Nyeri Kala I Fase Aktif Pada Ibu Bersalin
Authors: Wardiyaningtuti Nuning , Indriati Ina , Retnaningsih Reny
Published: January 2024

During labor, pain can lead to hyperventilation, increasing oxygen demand and blood pressure while reducing intestinal motility and bladder function. This situation triggers the release of catecholamines, potentially interfering with uterine contractions and causing uterine inertia, leading to prolonged labor. To address this, a pre-experimental study using a one-group pretest-posttest design was conducted among 30 birth mothers from the Rejoso Health Center, Pasuruan Regency. The study employed total sampling, and data analysis utilized the Independent sample t-test to evaluate the impact of counterpressure massage techniques on pain reduction during the first active phase of labor. The research revealed a significant effect, indicated by a p-value of 0.004 0.05, demonstrating the effectiveness of counterpressure massage in reducing pain during the initial active phase of labor for women in the Rejoso Health Center area. Consequently, it is recommended that laboring women experiencing pain be offered the counterpressure massage technique
Rancang Bangun Drone Flamethrower Alat Pembakar Layang-Layang Pada Saluran Transmisi Berbasis Arduino
Authors: Taryo Taryo , Wulandari Rindi , Ariwibowo Muhamad Riyad , Priyanto M. Angga
Published: January 2024

Bermain layang-layang disekitar saluran transmisi dilarang, Hal itu tertuang dalam PerMen ESDM Nomor 02 Tahun 2019 tentang Ruang Bebas dan Jarak Bebas Minimum yang diijinkan pada Saluran Udara Jaringan Listrik. Untuk membersihkan layang-layang dengan cara konvensional mengharuskan tim pemeliharaan menggunakan tongkat pembersih sampah yang menyangkut di jaringan konduktor atau cara tertentu lainnya. Alat tersebut berguna untuk membakar sampah layang-layang yang tersangkut pada saluran transmisi yang pengendaliannya menggunakan dua Controller yaitu transmitter dan receiver dengan arduino sebagai pusat kontrol. Hasil dari penelitian ini menunjukan bahwa berdasarkan hasil pengujian, hingga jarak 20 meter drone flamethrower ini dapat mengirim dan menerima perintah sesuai dengan yang diinginkan dan berhasil membakar layang-layang pada jaringan sistem tenaga listrik dengan ketinggian 17 meter dan rata-rata waktu pembakaran untuk membakar 1 layang-layang selama 13 detik. Maka dapat disimpulkan bahwa perancangan alat drone flamethrower dapat berjalan dengan baik.
Analisis Impak Tegangan dan Regangan pada Spesimen Batang Marka Jalan Menggunakan Air Gun Compressor
Authors: Siregar Zufri Hasrudy , Mawardi Mawardi , Ramadhan Andri , Rigitta Prinsi , Simorangkir Simon Petrus , Harahap Diana Suita
Published: January 2024

Marka jalan harus memberikan rambu dan informasi yang jelas tentang kondisi jalan, tidak hanya tentang material yang digunakan tetapi juga tentang lalu lintas dan kondisi jalan. Rusaknya marka jalan disebabkan perubahan suhu, kelembaban, dan tekanan sehingga perlu material yang kuat. Concrete Foam dengan batang 25 cm merupakan objek penelitian ini. Metode penelitian ini menggunakan Air Gun Compressor dan strain gauge pada spesimen untuk menghitung nilai stress pada spesimen. Tekanan maksimum 0,3 MPa, dan jarak antara pipa stiker dan input bar adalah 25 cm, dengan ketinggian 183 mm. Hasil penelitian bahwa jarak impak meningkatkan amplitudo tegangan, dengan nilai impak, penuh, dan tidak berubah, dan tiga kali percobaan dilakukan pada berbagai sampel dengan ID 25 cm. Kesimpulannya yaitu pengujian dengan Air Gun Compressor menunjukkan bahwa Concrete Foam memiliki nilai strain dan stress tertinggi 8,50. Penambah jarak impak, amplitudo tegangan meningkat tetapi tidak mengubah waktu impak.
Designing Logical Sequence by Using Microcontroller as Security Tools
Authors: Aminudin Nur , Feriyanto Dwi , Salimu Salman Alfarisi , Wicaksono Garda Arif , Cahyadi Septian , Sukamto Anton , Rahman Taufik
Published: January 2024

The objective of this paper are 1) to tell how to design logical security tools by using microcontroller 2) to describe the sequence of designing logical using microcontroller toward security controller. To explain the sequence step by step the researcher used design electronic chain. An Embedded system usually consists of at least a system unit microprocessor its memory for the program, data also input or output interface simple system. The interface like floppy disk, keyboard, appearance or printer which are usually available on the personal computer exactly is not available at the micro control system.  Microcontroller systems are used for important simple works like control motors, switch, variable resistor or electronic device, one of micro control used is box control or safe deposit boxes such as house, office, or bank for safe security. By utilizing micro control, the owner has valuables are not felt worried about the safe deposit box from stolen
Analysis of DVB-T2 TV Broadcast Receiver with Comparison of Signal Reception Quality
Authors: Dzikrillah Muhammad , Handayani Ade Silvia , Rakhman Abdul
Published: January 2024

Television is one of the most widely used media for receiving sound and image transmissions worldwide, particularly in Indonesia. Government regulations require all television broadcasters in Indonesia to cease analog broadcasts and transition to digital broadcasts. Consequently, a device known as the Set Top Box (STB), equipped with a low noise amplifier (LNA), converts DVB-T2 digital signals into images and audio suitable for analog televisions. Tests were conducted to evaluate its signal reception capabilities. These tests took place at four Palembang city locations, utilizing indoor and outdoor antennas. The results revealed that the device's signal strength ranged from -48.7 dBm, reaching 100% signal quality, to the weakest signal at -97 dBm. Moreover, an average difference of 6.9 dB was observed between indoor and outdoor testing for each frequency. Furthermore, analyzing the average signal strength based on distance showed that the highest strength of -56.2 dBm occurred at a distance of 1.5 km from the transmitter during outdoor testing. In comparison, the weakest strength of -91.6 dBm occurred at a distance of 1.8 km during indoor testing. Additionally, a signal strength comparison between test locations indicated that the most significant difference was between the Kamboja and Plaju locations. The LNA device achieved its highest gain value of 15.2 dB. Various factors, including antenna direction, obstructions such as buildings, antenna height, signal stability, and the distance between the transmitter and receiver, influence the signal quality.
Formalizar: ¿para qué?
Authors: Méndez Fernández Ignacio A.
Published: January 2024

El tema de la informalidad es muy manoseado, muy utilizado y pobremente enfrentado. Normalmente la informalidad se concentra en las empresas más pequeñas, unipersonales y microempresas, que por su tamaño y porque normalmente son parte de los sectores tradicionales y básicos de la economía, tienen pocos conocimientos gerenciales, pocos ingresos y ninguna cobertura para eventualidades. A pesar de los niveles tan pequeños de ingresos que tienen y de la poca cantidad de empleados que poseen, cuando se ven como sector, los números son diferentes y llegan a representar la mayoría de las empresas, del empleo y un porcentaje muy grande del aporte al PIB. Al ser más de un 90% de ellas informales (no pagan impuesto sobre la renta) y casi un 60% del empleo que generan es también informal, cuando se habla del tema de la informalidad se comete el error de señalarlas como la fuente de gran parte de los males de la economía nacional, sin reconocer que, aunque no declaren impuestos sí los pagan, y sin hacer consciencia de que para lograr una mayor formalización se debe tener un mejor concepto de las causas que la generan y los atractivos que deben tener las soluciones que se plantean. Es por ello que abogamos porque se tenga bien claro el objetivo de la formalización, y por el hecho de que éste sea un proceso transparente, inteligente e interesante para todas las partes, pero muy especialmente para el informal.
Efek Fraksi Volume Dan Panjang Serat Terhadap Pengujian Tarik Dan Impak Menggunakan Serat Daun Nanas Smooth Cayenne
Authors: Yuliyanto Yuliyanto , Ventani Embun
Published: January 2024

Bangka Belitung salah satu propinsi penghasil buah nanas terbesar disumatera, tetapi daun nanas tersebut belum diolah dan masih diangap sampah. Saat ini pemanfaatan pohon nanas hanya pada buahnya saja.  Padahal daun nanas ini memiliki serat yang sangat kuat dan bisa dijadikan komposit serat alam. Komposit berpenguat serat alam memiliki sifat ketahanan korosi yang sangat baik, serta biaya produksi yang lebih murah dan dinilai lebih ramah lingkungan.  Tujuan penelitian untuk mendapatan nilai pengujian tarik dan pengujian impak tertinggi pada fraksi volume 15%, 20%, 25%, 30% dan 35% dengan perlakuan alkali NaOH 5% selama 2 jam. Pembuatan sampel menggunakkan metode hand-lay-up. Analisis dilakukan mengunakan metode desain eksperimen langsung, dimana akan dilihat pengaruh perbandingan fraksi volume serat setelah dilakukan perendaman dengan NaOH 5% selama 2 jam terhadap kekuatan tarik dan kekuatan impak. Hasilnya kekuatan tarik tertinggi sebesar 52,6 Mpa pada fraksi Volume serat 25% dan terjadi penurunan kekuatan tarik pada fraksi volume 30% dan 35%. Kekuatan tarik terendah pada fraksi Volume 35% dengan nilai kekuatan uji tarik 24,7 Mpa, sedangkan hasil pengujian impak tertinggi sebesar 26,5 kj/m² pada fraksi volume 30%, sedangkan kekuatan impak terendah sebesar 11 kj/m². Hal ini disebabkan karena semakin banyak penyebaran serat pada resin disetiap komposit akan memperkuat ikatan antara matrik dan serat yang menyebabkan komposit akan bersifat kokoh dan tidak getas, tetapi jika serat diatas 30% akan mengakibatkan kekuatan semakin menurun karena ikaran resin dan serat tidak sempurna. Begitu juga sebaliknya serat yang sedikit akan membuat ikatan penguat tidak seimbang dan cendrung kekuatannya menurun. Untuk hasil pengujian serat diatas 20% sudah bisa dijadikan bahan komposit baru untuk pembuatan helm sesuai standar SNI.